WQD Series Waste Water Pump

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Loading Port:: Ningbo

Payment Terms:: TT OR LC

Min Order Qty:: -

Supply Capability:: 35000台 unit/month

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Specifications

1.CE certificate
2.Aluminium/Stainless steel/PPO
3.Mechanical seal:Ceramic-Graphite
4.Suction strainer:Stainless steel

WQD 2'' electric pump

♦APPLICATION AREA

For usage of industry, agriculture, mine, building construction, environmental protection, fit for carry slurry, mortor, daily sanitary wastewater, and sewage containing flocks, papers,mud and sand and other solid particles. Also fit for dredging.

♦OPERATING LIMITS

Trans medium'sPH:4-10

Fluid temperature limit:<40°C

Max ambient temperature: :<40°C

Operating depth:5m

♦STRUCTION CHARACTERISTIS

Insulation class:E

Protection class;IP68

♦FEATURES

1. CE, GS certificate

2. 100% copper wire, automatic wiring

3. Cold-rolled silicon steel sheet, with high-speed punching, improve the efficiency and

precision.

4. CNC precision automatic lathe for smoother shaft.

5. Strict tests include water test, outgas test and performance test, ect.

6. Anti-rust treatment castings and electrophoresis.

7. 23-year experience, 1 year warranty.

Q: Why should the pump be closed when the centrifugal pump is started?: Centrifugal pump has an important characteristic: when the pressure (head) is very low, the flow will be great, which can be seen from the characteristics of the pump curve. While the pump power is directly proportional to the flow rate, pump start, no pressure in the pipeline, caused by the pump flow, high power pump, and the pump motor, the rotating part from rest to high-speed operation, need a lot of acceleration, it will cause a great starting current

Q: Water pump outlet valve sequence: Design specifications detailed manual instructions, divided into two cases:1, pump water first check valve, suitable for small caliber pipeline, gate valve to protect the non-return valve, not damage function;2, pump water out of the first gate valve, check valve for large diameter pipe, at this point valve easy to open and close;The setting of the check valve is mainly to avoid the high reverse speed of the pump and the condition of the submerged pump house. Set in the suction port of the pump, then stop the pump water flow will still affect the pump. In addition, the pump suction should try to avoid installing too many pipe fittings, so that the pump can maintain sufficient cavitation margin.

Q: The distance from the pump button to the ground: After confirming that the fire pump has started running, issue a command signal to the hydrant button to light the green answer light.

Q: What is the "variable" of a variable pump? Is the displacement change or the flow change? Thank you: There are many ways to change the variable pump flow: by changing the eccentricity to change the piston stroke length (radial piston pump, the frequency change principle) motor speed to adjust the flow (such as gear pump flow control principle).

Q: What does electromechanical vector pump mean?: Commercial buildings: hotels, office buildings, department stores, large saunas, etc.Irrigation: such as parks, playgrounds, orchards, farms, etc.Manufacturing: such as manufacturing, washing equipment, food industry, factories and so on

Q: Rules for operation of centrifugal pumps: Operating rules:1, before starting to check whether the water pump foot loose, coupling shield, and motor fan blade cover is intact, in order to ensure the safety of equipment and personal safety.2. Check whether the inlet valve is open and open as fully as possible. Is the outlet valve closed, open the bleeder valve, exhaust until there is no air, and close the bleeder valve. At the end of the valve to the pipeline in the pump cavity filled with water.

Q: Why is the flow of the pump too small will occur cavitation phenomenon?: This is because the impeller of the centrifugal pump rotating speed under the drive of the prime mover, when the valve opening decreases, flow rate is too low, can not be taken away by the friction heat generated by the impeller and the liquid completely, make the temperature of the liquid inside the pump. Thus causing liquid vaporization, forming cavitation. Especially in the power plant, the boiler feed pump is more remarkable. Therefore, when throttling regulation, we should set up recirculation system, increase the output flow of the pump to prevent cavitation. When the feed water rate is reduced to 1/3 of the maximum flow rate, the recirculating gate shall be opened so that the flow of the feed pump will be increased properly to ensure that the liquid temperature in the feed pump does not rise.

Q: What's the word "pump"? Is that what advocates mean?RT: What is a "fan"?In recent years, the term "fan" often appears on the newspaper Web page, whether it is a team, a singer, a sports car and a toilet, all of which have their own fans

Q: What is the difference between centrifugal pump and self suction pump? Which is better?: In order to prevent the filling liquid into the pump shell because of gravity flow in the low groove, in the pump suction pipe at the entrance of a non-return valve (valve); if the location of the pump below the liquid level in the tank, then start without irrigation pump.Self-priming pump is a self-priming centrifugal pump, centrifugal pump is a kind of.Specific choice of a pump, depending on your specific parameters and conditions of use.

Q: What are the failures and causes of the replacement of the fuel pump assembly?: Gasoline pump is the gasoline from the gasoline tank suction and the gasoline tank has a certain pressure, thereby, it overcome the resistance of the pipeline, pipeline and fuel filter into the carburetor float chamber or electronically controlled injection engine in the guide frame.

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