2016年12月21日星期三
2016年12月20日星期二
Product features and working conditions of vertical multistage pump
Vertical multi-stage pump product features :
1.High efficiency and energy saving: using CFD computational fluid dynamics, analysis and calculation of pump pressure distribution and velocity distribution relationship, optimize the pump flow design, to ensure that the pump has a high efficiency of hydraulic lines, improve the efficiency of the pump.
2.Installation, maintenance is convenient: vertical pipe type structure, pump inlet and outlet can be like the valve installed in any location and any direction of the pipeline, the installation and maintenance is very convenient.
3.Smooth operation, safe and reliable: the motor and pump direct connection, simplify the intermediate drive structure, enhance the stability of the operation, so that the unit running smoothly, safe and reliable.
4.Stainless steel sleeve: shaft sealing position is relatively easy to be corroded. Once the shaft of the direct coupling pump is corroded, it is easy to cause the sealing failure of the machine. Pump is used here with stainless steel cover, to avoid corrosion, improve the life of the shaft, reduce operation and maintenance costs.
5.Bearing: pump with motor, y (Y2) 280 the following shaft extension end bearing (including Y180 the following wind blade end bearing) using closed bearing, normal use, maintenance free motor bearings.
6.Seal: mechanical seal base parts generally used in rubber bellows structure, the traditional mechanical seal shaft sealing by O ring seal into the line of the two side rubber seal, the sealing effect is improved.
Method for replacing failure mechanical seal of vertical pipeline pump
Method for replacing failure mechanical seal of vertical pipeline pump
1.Ready to place the pump part of worktable (ground) and disassembly tool, do not leave around any indiscriminate use, so as not to damage the pump parts.
2.Confirmed before the motor is in maintenance state; unscrew the gas plug, with Straw put the oil seal seat cavity aspiration.
3.Demolition of the fractional coupling: the first coupling of the fixed six angle screw down, and then gently pull the shaft coupling half from the shaft slowly down (note not to fall off). Use plum blossom wrench shaft fasten bolt and block the impeller to the pump body slowly sink, remove the other half of the coupling, pump shaft with ring.
4.Demolition sealed block: block compress sealed screw nut and gently remove seal seat (Note: do not destroy the seat of rubber oil seal) and cleaning.
5.Removing and cleaning bearing: first gently loosen bearing seat after the demolition of the top bearing bolts, and put up along the shaft and unloaded; with jet fuel cleaning bearings and a pre loaded and dry coated with a little 20 mechanical oil lubrication protection.
6.Removal of mechanical seals: to seize the seal spring along the pump shaft to lift, you can remove.
7.Mechanical seal assembly: in the dynamic and static ring surface coated with a layer of clean 20 lubricating oil; add lubricant bearing guided, first gently positioning ring static load bearing guide; then on the pump shaft with lubricating oil, the mechanical seal ring part gently into the pump shaft. Push should be retractable sealing ring gently (note that dynamic and static ring part rotation preventing part assembly in place).
8.Assembly seal seat: seal seat first into the rubber oil seal, and then put the seal seat into the pump cover and press on the bearing seat, tighten the nut.
9.First: the coupling ring on the motor shaft mounted on the head, with half of the coupling, then the pump shaft end and coupling slot is arranged on the block and plum wrench tightening bolts (lifting shaft 3~5 mm and pre-stressed mechanical seal); the other half of the coupling screw six screws must be tightened and then loaded on the corner. Installation of coupling the correct inspection requirements: the fraction of the gap between the joint clearance is uniform; the number of dynamic coupling with the hand disc to check the rotation flexible.
10.According to the use of key points test operation to replace the mechanical seal is correct, whether the normal operation of the pump group.
2016年11月7日星期一
Municipal water supply pumps - Performance requirements
Raw water project
1, take, combined with water
2, take, lose, with water
3, half-way pressure
4, pumping station dosing, cooling, lubrication and other service water delivery
5, pumping station drug delivery, configuration and dosing
6, pumping station rainwater excluded
Water Works
1, the factory water transmission, with
2, the process of water delivery to enhance
3, clean water unit backwash water transport
4, dosing, cooling, lubrication and other services water delivery
5, pharmaceutical delivery, configuration and dosing
6, sludge water and backwash wastewater transport, remove
7, concentrated sludge transport
8, rain excluded
Second, the performance requirements of the pump
Raw water to take, lose, with water pump
1, continuous operation, high reliability requirements
2, take, lose combined and half-way pressurized water flow and head
relatively stable
3, take, lose, mix with the water flow and head is relatively stable
Change big
4, the requirements of the pump efficiency and good cavitation performance area wide
5, the original high water content of sand with water contact with the material wear-resistant high
6, raw water chloride contact with high water resistance of chlorine material requirements
Water plants and water mains pressurized water transport, distribution pumps
1, continuous operation, high reliability requirements
2, a single water delivery water flow and head is relatively stable
3, the transmission and distribution combined with the water flow and head relative
Stable change
4, requiring high efficiency pump area and cavitation performance excellent wide area
Water distribution network
1, intermittent operation
2, water flow and head is relatively stable
3, the requirements of the efficient pump wide
Water works process water delivery, lifting pump
1, continuous operation, high reliability requirements
2, water flow and head is relatively stable
3, the general use of variable frequency control for constant variable flow operation
4, the requirements of the efficient pump wide
Water Purifier Unit Backwash Water Pump
1, intermittent operation
2, water flow and head stability
3, the requirements of the design point of the pump point of high efficiency
Station dosing, cooling, lubrication and other services water delivery pump
1, continuous operation, high reliability requirements
2, water flow and head stability
3, the requirements of the design point of the pump point of high efficiency
Factory station drug delivery, configuration, dosing pump
1, transmission, configuration pump intermittent operation
2, Dosing pump continuous operation, high reliability requirements
3, transmission, configuration pump water flow and head stability
4, Dosing pumps are variable frequency control through the variable flow operation
5, material requirements Resistance to media corrosion and wear
Station rain water removal pump
1, intermittent operation
2, water flow and head is relatively stable
3, material requirements Resistance to media corrosion and wear
Top submersible sewage pump manufacturers
Which is the top submersible sewage pump manufacturers? Top submersible sewage pump manufacturers that year was born? Top submersible sewage pump manufacturers products which have? With a series of top dive sewage pump manufacturers a series of problems, today, Xiao Bian will introduce the top diving sewage pump manufacturers --- Sai Lemo, Sailaimer submersible sewage pump manufacturers in all aspects of more detailed display in front of everyone.
Sailaimo submersible sewage pump manufacturers have more than 40 brands, some brands used to be an independent company brand, by Sai Lemo / ITT through mergers and acquisitions and mergers and acquisitions to become the brand name.
Sai Lemo's well-known brands:
Flygt (Flygt): the world's first submersible sewage pump inventor, the world's leading submersible pumps, mixers and aeration equipment manufacturers, founded in 1901, in the industry already has a hundred years of historical experience .
Goulds Water Technology: from the United States, with 160 years of pump design and manufacturing history, industry leading brand, efficient hydraulic model, advanced design structure, high-end processing technology to ensure the reliable operation of the product life cycle.
Lowara: from Italy, founded in 1968, is the world's first stainless steel for pump manufacturers. Advanced automated laser cutting and welding technology, high-precision production, to ensure efficient products, stable performance.
Bell & Gossett: North American HVAC industry's first brand, 100 years of design and manufacturing experience to create energy efficient first-class products, the creator of the second frequency conversion theory, HVAC system experts to create first-class Comfortable experience.
AC Fire Pump (A-C Fire Pump): the US fire industry leader, founded in 1880, a complete FM / UL certified pump type, NFPA20 specification makers. 40 years of the system into a pry experience, access to the United States ETL safety certification, creating a safe and reliable professional fire protection system.
Godwin: A global leader in fully automated self-priming pumps for temporary and permanent applications. Godwin rents or sells a range of diesel and electric pumps for drainage and fluid delivery in mining, construction, municipal and industrial applications.
Wedeco: An important manufacturer of UV disinfection and ozone oxidation systems, as well as associated monitoring and control systems, for municipal and industrial water and wastewater disinfection.
WTW: Provides durable analytical products for laboratory, field and on-line measurement of pH, dissolved oxygen, conductivity, total dissolved solids and specific ions for environmental, water and wastewater treatment, food and beverage, education, Medical, research and chemical / petrochemical industries.
Leopold: An international leader in the design and supply of gravity filtration, clarification, denitrification, sludge collection and backwash systems for water and wastewater treatment plants.
These are the legendary top submersible sewage pump manufacturers - Sai Lemo. As a global manufacturer of submersible sewage pumps, Sailaimo submersible sewage pump can not say the quality, however, Sailaimo submersible sewage pump more expensive, many manufacturers choose the quality of submersible sewage pump international sewage pump brand, sewage pump prices are low Of the Shanghai Weihu Pump. Learn more, step by step Shanghai Weihu selling submersible sewage pump area.
Why sewage pump with sewage pump control box?
Why sewage pump with sewage pump control box? Sewage pump with sewage pump control box What are the benefits?
Sewage pump with sewage pump control box Benefits:
1, the need for automatic control: the general requirements of unattended water pump, according to user requirements (such as liquid level, pressure level, etc.) automatically run, if there is no control cabinet can not be achieved.
2, the need for safe operation: through the control components, such as with the button to open, close the pump, on the one hand the operator is relatively safe, on the other hand because of the rapid action of contactors, three-phase power supply, broken consistency is better, Electrical requirements for electrical machines.
3, the control needs: Some users do not interrupt because of production needs of water supply, often with a spare pump, which is a prepared with a control, and some even have to prepare a second, three with a prepared control, request work Pump failure standby pump automatically put into operation, and some also need to automatically switch from time to time. If there is no electronic control cabinet, it is difficult to do. Re-entry of more high-power pump 15KW need to start more than buck, which must also have electric control cabinet to achieve. 4, the protection needs: the motor can not be overloaded for a long time, can not run phase, which requires overload, short circuit, lack of protection, submersible sewage pump also have leakage protection, these protection features are pump control cabinet Control implementation.
These are why the sewage pump with sewage pump control box and sewage pump with the benefits of sewage pump control box, to further understand, move the Shanghai Weihu sewage pump control box area.
Automatic Mixing Blowdown Pump Structure Advantages
There are many types of submersible sewage pumps, in many submersible sewage pumps, automatic mixing sewage pump is the most extensive and most commonly used submersible sewage pump pump type, automatic mixing sewage pump itself has the characteristics and advantages of its work Up a lot easier. So, for automatic mixing sewage pump structure advantages, we all know? Today, Wei Shanghai Submersible Sewage Pump Xiaobian to explain to you under the automatic mixing sewage pump structure and advantages.
Automatic mixing sewage pump structure:
Automatic mixing sewage pump uses a unique dual-channel non-clogging impeller structure, making its sewage sewage capacity and sewage capacity has been greatly improved. In addition, the automatic stirring device produces a strong stirring force, so that the sediment into a suspended sediment, and then inhaled by the impeller and then discharged, so as to achieve the dredging effect.
Automatic mixing sewage pump diaphragm divides the base into two halves, so that the effect is - mixing and influent each other, very to the force. In addition, the mechanical seal for the double-ended mechanical seal, in the oil chamber in the long-term storage, making the pump to safe and reliable operation.
Automatic mixing sewage pump structure is the auxiliary impeller structure of the fluid dynamic seal, the role of auxiliary seal, but also can balance the axial force, thus extending the service life of the bearing, its played a protective role. Automatic mixing sewage pump pump wiring chamber leakage detection probe in the event of leakage when the water exploration, the probe will send a signal, and then will implement the protection of the pump operation, this operation is controlled by the control system .
From the above description, we can see that the automatic mixing sewage pump structure and advantages are inseparable, the official automatic mixing sewage pump unique structure, automatic mixing sewage pump had a "good sewage effect, do not plug "And other advantages. As a few decades of professional manufacturers, Shanghai Wei Shanghai pump automatic mixing sewage pump compared to other manufacturers sewage pump, more advantage. If you are dealing with the problem of sewage discharge and handling, and may wish to further understand the sewage effect is particularly good Weihu automatic mixing sewage pump.
Winter submersible sewage pump maintenance
Winter submersible sewage pump maintenance attention to what? Winter diving pump step is what? Winter submersible sewage pump how to maintain?
Winter wind howling, we are very concerned about the winter problem: how to place the winter sewage submersible sewage pump; has been plaguing everyone. Here, Shanghai Weihu pump sewage pump small series will be how to properly handle the sewage pump winter ice concrete operation practices to share to you.
1. If the submersible sewage pump icing, use hot water or boiling water into the submerged sewage pump to internalize the ice. Or heating the submersible sewage pump housing.
2. The submersible sewage pump placed in a room temperature environment, can be more than zero.
3. Use of submersible sewage pump. The insulation layer by adding steam or hot water to prevent submersible sewage pump freezing.
4. The use of non-self-priming centrifugal pump, the use of water can be added only when the submersible sewage pump to avoid icing.
5. The submersible sewage pump within the water emptying, add water when used. To prevent submersible sewage pump freezing freezing submersible sewage pump.
Submersible sewage pump routine maintenance:
1. Drainage sewage pump is disabled, it is necessary to put away the submersible sewage pump and pipe the remaining water, and the external soil clean, so as not to freeze on the frozen water after the pump body and water pipe burst.
2. Submersible sewage pump bottom valve, elbow and other cast iron parts, wire brushes should be the rust brush net, and then coated with anti-rust paint and then painted, to be dry and then into the engine room or storage room ventilated dry Local preservation
3. Belt drive, remove the belt with warm water, dry and dry after cleaning, dry place, no direct sunlight, and do not store in a place of oil, corrosive substances and smoke. In any case, do not make the belt stained with oil, diesel or gasoline and other oil substances, do not coated rosin and other viscous substances.
4. Check the ball bearings, such as wear within the jacket, Kuang move, ball wear or surface spots to be replaced. Do not need to replace the gasoline or kerosene can be used to clean the bearings, coated with butter, re-installed.
5. Check the submersible sewage pump impeller has cracks or holes, impeller fixing nut is loose, if damaged should be repaired or replaced. If the impeller wear too much or has been broken, the general should replace the new impeller. Local damage can be welding, epoxy mortar can also be used to repair the impeller, impeller repair should be carried out after the static balance test. Check the impeller wear ring clearance, if more than the specified value, should be repaired or replaced.
6. Repair or replace the pump shaft which is bent or worn seriously, otherwise it will cause the unbalance of the rotor and the wear of the relevant parts.
7. Remove the screws soaked in diesel oil brush with a wire brush clean, and coated with oil or butter, re-installed or wrapped with plastic wrap, put away, so as not to rust or loss.
Through the above sewage pump how to handle and maintain the winter of learning, I believe we in this cold winter no longer have to worry about diving sewage pump can not work smoothly!
Weihu pipeline pump the most cost-effective
The quality of the pipeline pump directly affects the efficiency of the pipeline pump and pipe pump to play the length of life. Poor quality of the pipeline pump, not only can not effectively solve the customer's sewage problems, and even make the pipeline pressurization problem is more and more serious, directly affect the customer's economic benefits. Foreign brands pipeline pump technology leader, cheap domestic road pump, how to combine the advantages of Chinese and foreign pipeline pump to produce cost-effective pipeline pump has been thinking of the direction of the Shanghai pipeline pump.
In order to improve the pipeline pump product cost-effective, Shanghai Weihu pump pipeline pump production base mainly from the following three aspects:
1. Raise awareness of "product quality" of all personnel.
From the headquarters to the branch, Shanghai Weihu Pumps will hold regular training on "upgrading the product quality of the pipeline pump". The company personally leads the organization to organize the product quality series training, striving to deepen the concept of "the quality of pipeline pump products" to every employee Of the heart.
2. The introduction of high-tech production lines, reduce production costs
Traditional pipeline pump production relies on a lot of labor, the quality of the pipeline pump produced by uneven. In order to make the pipeline pump product quality to a level, product quality to meet international standards, Shanghai Weihu pump pipeline pump production base construction of high-tech production pipeline pump. This high-tech production line mainly by the large-scale automatic punching machine, automatic painting lines and large computer-aided equipment for the production of "standardized, international" pipeline pump products provide a huge protection. At the same time, high-tech production line so that the cost of pipeline pumps dropped significantly, the most significant Rangli to the Shanghai pipeline pump users.
To the quality of life and reputation as the basis, the efficiency of survival, Shanghai Weihu Pump adhere to this concept, so that each factory pipeline pump can solve the problem of pipeline pressurization, at the same time, through high-tech investment Reduce the cost of production of each pipeline pump, so that each customer can enjoy the cost-effective pipeline pump products to bring economic benefits! Learn more, step-by-step hot selling high-performance pipeline products!
Professional sewage pump manufacturers great future development
As a professional sewage pump manufacturers, the pump market for the changes are of particular concern. According to the recent sewage pump market information, we believe that such as Shanghai Weihu sewage pump professional manufacturers such a great future development.
First of all, we first analyze the entire domestic market conditions of the major economic markets. As all aspects of our country are developing rapidly, especially the economic development is very rapid. Rapid economic development shows that China's various industries have been quite mature, so that the current economic situation is that all walks of life are very competitive. Of course, the pump industry, the competition between businesses is quite intense, sewage pump as one of the types of pumps is also fierce competition is indispensable.
In such a fierce competition, it was said that the sewage pump market is not the economy, competition is too intense. I would like to tell you do not worry the next under this conclusion, if we carefully analyze our market, you will find the submersible sewage pump market conditions are still excellent, especially professional sewage pump manufacturers in the future more development.
"Professional sewage pump manufacturers great development in the future," this conclusion, we can simply from two points:
1, is our country's economy has developed to a certain extent, a large number of public facilities services are built. Especially in the traffic on the road, subway, high-speed rail construction, these countries are increasing investment and construction efforts. Drainage equipment is essential in these projects, which means that a large number of submersible sewage pump needs.
2, that is, people are particularly concerned about the housing prices are still rising rapidly, from the housing economy, our diving sewage pump market in the real estate industry in the construction industry is also a good prospect. We all know that a large number of sewage pumps are used in building construction waste water discharge system, the house is the people's life just needs, his demand is only increasing, from the soaring housing prices can be seen that the real estate market is still very good , As his side of the industry with the market demand for submersible sewage pump is also great.
From the above simple analysis, we can sum up the future market of submersible sewage pump is a good prospect, and as we dive sewage pump industry businesses and manufacturers to do is seize this good market opportunities, but also in the sewage Pump product quality and technical more continuous improvement, develop a better market, professional sewage pump manufacturers in the future will have a huge development!
2016年11月4日星期五
Submersible pump and sewage pump What are the differences between it
Submersible pumps and sewage pumps What are the differences? How should we distinguish? Today, we Shanghai sewage pump manufacturers and we simply talk about, I hope to help you.
First, the use of submersible pumps and sewage pumps are different
Submersible pumps for some special process requirements, such as leakage, special fluid medium, the price is more expensive. Sewage pumps are generally used for regulation, there are switching capacity, such as fan coil end.
Second, the submersible pump and sewage pump switching methods are also different
Submersible pump through the coil drive, can only open or close, switch action time is short. Sewage pump drive is generally used motor, open or close action to complete a certain amount of time to do analog, you can do adjustment.
Third, the working properties of submersible pumps and sewage pumps are different.
Submersible pump general circulation coefficient is very small, and the working pressure difference is very small. For example, the general diameter of the submersible pump diameter of 15 than 15-valve ball valve is much smaller. Submersible pump drive is through the electromagnetic coil, relatively easy to be damaged by voltage shock. Equivalent to the role of the switch is to open and close the two roles.
Sewage pump drive is generally used motor, more resistant to voltage shock. Submersible pump is fast opening and fast closing, generally used in small flow and small pressure, the required switching frequency of the local sewage pump and vice versa. Sewage pump valve opening can be controlled, the state has on, off, half open halfway, you can control the flow of media in the pipeline submersible pumps fail to meet this requirement.
Submersible pump can be reset the general power, sewage pump to such a function need to add reset device.
Simple Solution to Leakage Problem of Submersible Pump
When you use the submersible pump may be because the submersible pump leakage problems and some novice do not know how to do, how to judge where the wrong, Hope to help you.
First of all, we should know, submersible pump leaks are mostly due to aging seals, wear and tear caused by, in addition to replacing the new seals, there are no other submersible pump troubleshooting solution?
First, the submersible pump seals due to prolonged use of loss of elasticity, then remove the ring, and then find a piece of 0.3mm-0.5mm thick paper or cloth referred to as the original seal a little bigger pad installed in the concave bad , And finally installed on the original ring.
Second, the nylon seal seat rubber seal wear, the ring can be removed, and then replace the location of the installation, if the sealing ring on the elastic spring lost elasticity or fracture, can remove the spring, with a suitable diameter steel wire or wire truss.
Third, the first ring can be removed from the serious wear and tear of nylon seals, and then coated with butter asbestos rope, wrapped in stainless steel sleeve filled slightly higher than the original nylon seat, and then filled with butter, then nylon seat bolt pressure Tight compaction.
Fourth, sealing box and cast iron seal between the loss of elasticity, can be removed from the cast iron tank ring, looking for a thick 0.6 to 1 mm thick cardboard cut into the same size, pad in the slot, and then the Seal into.
Fifth, the oil hole rubber ring damage, can find a piece of tape, cut into slightly larger than the bolt hole, top plus flat pad, set in the bolt into the hole.
Precautions before installation of deep well submersible pump
Deep well submersible pumps in the installation of the need to check the deep wells in the inspection when we need to pay attention to what it is, and today we Shanghai deep well submersible pump manufacturers and we want to say, I hope for you to install a little help.
First, check the vertical and bending depth of the deep well, to ensure deep well pump installation after the deep shaft, its drive shaft has a vertical position, which requires deep well pipe from the wellhead to install water pump section where the location should be Is vertical. Even if the deviation of the well from the vertical time, its degree of deviation should also be controlled in a certain range, so that deep well submersible pump shaft in the well can still maintain vertical operation.
Second, check the existence of the upper part of the well water and oil emulsions. To prevent the deep well submersible pump installed after the completion of the trial operation, the oil and emulsion attached to the pump and the rotating shaft of the rubber bearing, adversely affected, can usually be hoisted into a deep bucket rope, the surface water suspension Of the oil impurities such as the proposed wells.
Deep well pump installation commonly used tools
What tools do we need when we install a deep well pump? There is the installation of water section is how? Today, we Shanghai deep well pump manufacturers and we simply talk about, I hope to help you.
Commonly used tools for installing deep-well pumps include mounting towers or tripods, winches and special tools, including chain pliers, pipe pliers, drive shaft bearing plates and pipe clamps.
Installation method: Before installation, the packing gland, packing ring and retaining ring should be taken out, and then the water outlet section should be lifted to align the shaft hole centerline with the drive shaft, keep steady and slowly decrease, So that the drive shaft just out of the hole out of the shaft hole. If the water outlet lifting slightly skewed, installation difficulties occur, it may damage the drive shaft end of the thread, even when the shaft will cause serious bending deformation. Driving shaft after the use of bolts will pump pipe flange fastened to the water section, and then into the packing pressure ring and retaining ring.
Deep well pump which anti-corrosion measures
Deep well submersible pumps in the water how should we control the underground water corrosion of the well pipe it? Today, we are the Shanghai submarine pump manufacturers and we say what measures of anti-corrosion.
The first is to enhance their own, improve the corrosion resistance of the pipe, the use of anti-corrosion properties of good materials.
The second is to remove or suppress some of the factors that produce corrosion. How to do Here we introduce.
1, the use of high-quality materials: good corrosion resistance of the pipe, connecting screws, copper wire rope, can be doubled to extend the service life. The same kind of metal materials as far as possible the use of smooth surface, not rough; with annealing, no hardening. Stress concentration at the welded joints prone to corrosion, in the production and installation should be avoided.
2, coating (plating) protective layer: in the pipe surface coating (plating) protective layer has the following characteristics: electrical insulation, integrity and durability, coated material has a certain degree of adsorption and strength, and non-toxic and economical.
3, the replacement screw: deep well submersible pump pipe connection screw, the annual wellhead maintenance replacement should be made, it is best to use galvanized screw connection. Wire rope coated with oil or plastic tube.
4, to strengthen control: heavy calcium carbonate precipitation in a large number of areas, as far as possible to take various measures to reduce the water supply pipe wells jump value, lower water speed, to increase the filter diameter, increase the water area, when the water demand is small Pumping down, fill the gravel diameter of the upper limit.
2016年11月3日星期四
What are the characteristics of explosion-proof submersible pumps?
Explosion-proof submersible pump is suitable for chemical industry, petroleum, pharmaceutical, mining, papermaking industry, cement plant, steel plant, power plant, coal processing industry, and urban sewage treatment plant drainage system, municipal engineering, construction sites and other industries. , Dirt, stainless steel explosion-proof submersible pump can also be used to pumping water and corrosive media. So when in use need to pay attention to what things? There are explosion-proof submersible pump What are the advantages? The following by our Shanghai manufacturers and simple submersible pump to talk about, I hope to help you.
Submersible pumps in use when the need to pay attention to the problem:
1, the submersible pump can not dehydrate the movement. Test run in anhydrous conditions, the time shall not exceed 5 Fen. In the pumping process, if the water level does not fall Zhejiang, should be careful not to let the pump exposed surface work.
2, after the shutdown of the submersible pump can not be re-start immediately, must wait for the water inside the tube backflow before they can start. If the water can not start, should immediately stop to identify the reasons, be excluded.
3, different types of submersible pumps, should be required to use the head; supporting the rubber tube, tube or canvas tube diameter should meet the technical requirements.
4, submersible pump into the water or raised the surface, you must pull the "ears" on the rope, absolutely not pull the cable. To carry, disassemble or repair, should first cut off the power.
Explosion-proof submersible sewage pump What are the characteristics:
First, the use of a unique single-blade or double-blade impeller structure, greatly improving the dirt through capacity, can effectively through the pump diameter of 5 times the diameter of the fiber material and pump diameter of about 50% of the solid particles.
Second, the mechanical seal using a new type of hard corrosion-resistant tungsten carbide as a material, while improving the seal to double-face seal, so that long-term operation in the oil room, the pump can run safely for more than 9000 hours.
Third, according to the needs of users with automatic safety control cabinet, the pump leakage, leakage, overload and over-temperature, such as absolute protection, improve product safety and reliability.
Fourth, the beginning of the float can change according to the required level, automatic control of the pump start and stop, without special care, the use of extremely convenient.
Fifth, according to user needs with dual-rail automatic coupling installation system, it gives the installation and maintenance of great convenience, people do not have to enter the sump for this.
Sixth, the overall compact, small size, low noise, energy-saving effect is remarkable, easy maintenance, no need to build pump house, diving into the water to work, greatly reducing the project cost.
Seventh, the sealed oil chamber is equipped with high-precision anti-jamming leak detection sensor, and the stator winding embedded in the thermal components, the absolute protection of the pump motor.
How to maintain the submersible pump?
Submersible pump maintenance is very important, Submersible pumps are more common in our lives, the paint is used in agricultural irrigation, mountain and water use more, in the process of using the submersible pump, do not forget to maintenance of the submersible pump care, otherwise it is easy to lead to diving Pump failure problems, will affect the work efficiency and quality of the following we are on the submersible pump manufacturers in shanghai on the maintenance of the submersible pump some of the considerations.
First, the use of submersible pumps to check the machine before the switch, cable, electric shock protection, etc., to ensure that these things are not abnormal, can work properly to start the submersible pump. In particular, pay attention to the machine to a good grounding to avoid electric shock accidents.
Second, the submersible pump insulation resistance to be checked regularly, if less than 0.5MΩ, it is not in line with the requirements, to deal with timely, so as to ensure the normal work of the machine.
Third, we must regularly check the drainage hole and a hole, there is no exception to tighten. Submersible pump water or water, they must cut off the power, pull the rope on the rings.
Fourth, the submersible pump work more than 300 hours, to be sensitive to water inspection, if the release of water less than 25 ml, it should check whether the rubber seal has been damaged. Should pay attention to submersible pumps can not be buried in the river mud work, because the river mud more debris, will affect the work of submersible pumps.
Advantages and Disadvantages of Mechanical Seal for Submersible Sewage Pump
Submersible sewage pump in the mechanical seal and soft fill seal What is the difference? Advantages and disadvantages of what it, the following by the manufacturers to come to Shanghai weihu and simple to say, I hope we can better understand the submersible pump.
First, reliable sealing In the long-cycle operation, the sealing state is very stable, leakage is small, according to rough statistics, the leakage is generally only soft packing seal 1/100;
Second, the long service life in oil, water media generally up to 1 to 2 years or longer, usually in the chemical medium can reach more than six months;
Third, the friction power consumption Small mechanical seal friction power is only 10% to 50% of soft packing seal;
Fourth, the shaft or sleeve is substantially free from wear;
Fifth, the long-term maintenance cycle after wear and tear can be automatically compensated, under normal circumstances, without regular maintenance;
Sixth, good anti-vibration of the rotating shaft vibration, yaw and axis of the seal cavity deflection is not sensitive;
Seventh, the wide range of mechanical seals can be used for low temperature, high temperature, vacuum, high pressure, different speed, and a variety of corrosive media and media containing abrasive seal.
Eight, for many of today's submersible sewage pump factory "zero leakage" needs, packing can not meet this requirement; simply adapt to a wide range of arbitrary, but for the factory, frequent replacement or maintenance will cause great losses to the factory .
Disadvantages:
First, the structure is more complex, high manufacturing and processing requirements;
Second, the installation and replacement is too much trouble, and requires workers to have a certain level of installation technology;
Third, the occurrence of accidental accident, the more difficult;
Fourth, one-time investment is high.
Fresh water pump selection
Commonly used water pump models ISG series, IHG series, YG series, the above models for the vertical structure, the materials were cast iron, stainless steel and carbon steel, of course, stainless steel can also be divided into 304,316, etc. According to the customer's own Of the input cost of choice.
In addition to the vertical structure of water pumps are horizontal, such as ISW series, ISWH series, IS series, etc., these models of water pumps for the horizontal structure, whether it is vertical or horizontal they can only transport water or transport similar Water medium.
More than the water pump model is based on vertical, horizontal to determine, we can also single-stage, multi-level, single-suction, double suction such expertise to mutiny, just introduced several water pumps are single-stage Single-suction, there is a clear water pump for the single-stage double-suction, such as the S-type double suction pump, this type of pump we usually called double suction centrifugal pump, it has high flow characteristics of low lift.
Understand the water pump model after we explain the principles of selection of water pump, the selection of the word we have to understand this: "choose the right pump", water pump selection we can choose according to the actual parameters, such as traffic , Head, caliber, motor rated power, and motor speed, etc., of which the flow and head are essential to the selection of factors, do not know these two parameters no way selection, customers remember to remember!
Large flow centrifugal pump selection
What is a large flow centrifugal pump? Large flow centrifugal pump is one hour or a minute of high water, such as 1000 square / hour, so that we can call it a large flow pump centrifugal pump. Large flow centrifugal pump how to choose? First of all, we have to determine its parameters, such as the number of cubic meters per hour flow, how much head, caliber. Large flow centrifugal pump generally has a characteristic, that is, such pumps head is not high, generally only a few meters are tens of meters. Next we have to determine whether such pumps are submersible pumps. Next, we will introduce the often used large flow centrifugal pump model.
Large flow centrifugal pump non-diving series, the general choice of SOW series in the open pump, the pump is also a single-suction double-suction centrifugal pump. This pump is mainly applied to the delivery of water, we have to look at the characteristics of this centrifugal pump:
Allowable working pressure of 2.5MPa; that pump inlet pressure + pump head ≤ 2.5MPa. According to the maximum pressure of the pump casing, the pump body and pump cover material is gray cast iron (1.6MPa), ductile iron (2.0MPa), cast steel (2.5MPa). When ordering please indicate the pump pressure or material.
Medium: the water temperature ≤ 105 ° C or similar physical and chemical properties of other liquid water (solid particles ≤ 80mg / L).
(SKF, NSK, NTN) high-quality bearings, smooth running, low noise, long service life, easy maintenance, long running time, oil cup with constant oil level, can also be used with thin oil lubrication. long.
These are the characteristics of large flow centrifugal pump. Large flow centrifugal pump diving series model for the QW series submersible sewage pump, this series of pumps can be applied to water or sewage. Such a large flow submersible pump for a wide range of sewage can also be used in the above laborers, the pump body, the impeller is made of stainless steel 304,316, etc., of course, ordinary cast iron.
Advantages of Centrifugal Pumps
Smooth work: positive concentricity of the pump shaft and impeller excellent dynamic balance, to ensure smooth work, no oscillation.
Watertight: not the same as the raw material of cemented carbide seal to ensure that the media are not the same as no leakage.
Low noise: two low-noise bearings under the support of the pump, work smoothly, in addition to weak motor movement, there is no noise.
Low failure rate: the layout is simple and reasonable, the key to use some of the world-class quality; supporting, machine trouble-free working hours greatly improved.
Repair convenience: replace the seal, bearings, simple and convenient.
More space: the export to the left, right, up three directions, easy installation of pipe devices, saving space.
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