WQ Vertical Sewage Centrifugal Submersible Water Pumps

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1. Specification For WQ Submersible Sewage Centrifugal Pump

2) With aluminium pump boby,anti-corrosion 
3) Sewage pump 
4) Dirty water pump 
5) Water pump

2. Product Introduction for WQ Submersible Sewage Centrifugal Pump. 
WQD WQ type submersible sewage  pump/dirty water pump consists of pump,mechanical seal and motor.Pump is at the bottom part of motor pump,which adopt centifugal impeller. Motor is at the upper part of motor pump and is a single-phase asynchronous motor or three-phase motor.Mechanicalk seal is between pump and motor,and it'sa kind of double end mechanical seal."o"rings are applied to all static joints of the submersible pump.Inner-installed protector prevents the pujmp from damages due to abnormal power,colg and overload etc.

3. Working Condition of WQ Submersible Sewage Centrifugal Pump. 
1) Transport liquid water temperature is less than +40°C
2) The PH value of the media is between 6.5to 8.5
3) The volume per centage of impurity in the medium is less than 0.1%,grain smaller than 0.2mm
4) Pump should be rated near lift the appropriate range,submersible pump head can not be too low,below the stiplated 80%of head easily lead to thermal protector,so that pumps stopped running,and even cause electrical damage.
5) Diving depth of no more than 5m.

4. FAQ for WQ Submersible Sewage Centrifugal Pump
1)  Are CNBM pumps available in DIY stores?
Yes, currently, we’re available for DIY stores all over the world.
2)  Where do I have to send pumps for service?
You must send them to the CNBM PUMP Service Point or, after contacting Customer Care, to the CNBM PUMP service center in China.
3)Are your pumps acid-proofed?
To choose the right pumps for chemical applications, we do need further details on hydraulic operations as well as on the type, concentration and temperature of the liquid.

WQ Vertical Sewage Centrifugal Submersible Water Pumps

WQ Vertical Sewage Centrifugal Submersible Water Pumps

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Q:Troubleshooting of diaphragm pump
The ratio of flow to water weight at a specific weight of --68F. 68F water has a specific gravity of 1Static suction head - the vertical distance from the liquid level to the central line of the pump. The pump shall be above the level of the liquid.Vapor pressure the pressure of all the steam on the free surface of the liquid. In any pump operating system, the operating pressure shall not be lower than the vapor pressure, otherwise the steam will be partially or completely cut off into the pump fluid. Viscosity - because of the presence of friction in the fluid, the property of viscosity gives the fluid resistance to flow.Water hammer action -Water hammer is a sudden power failure, or in the valve closed too fast, due to pressure, flow of inertia, produce water shock waves, like hammer hammer, so called water hammer. The force produced by the flow of water shock waves can sometimes be very large, thereby damaging the valves and pumps. Water hammer effect refers to the inside of the water pipe, the pipe wall is smooth, flow freely. When the opening of the valve suddenly closes, the flow of water to the valve and the tube wall, mainly the valve, will produce a pressure. As the pipe wall is smooth, the subsequent water flow in the role of inertia, the fastest reach the maximum and damage, which is the water conservancy "water hammer effect", that is, "positive water hammer.". This factor should be taken into consideration in the construction of water conservancy pipelines. On the contrary, the valve closed in a sudden opening, it will produce water hammer, called negative water hammer, but also a certain destructive power, but not the former big.. Causes and treatment methods of common failures of diaphragm pumps:
Q:The distance from the pump button to the ground
Yellow warning pop-up, indicating that the fire control room has issued alarm information, fire alarm controller (commonly known as the alarm host)
Q:What is the difference between centrifugal pump and self suction pump? Which is better?
Centrifugal pumps are vertical, horizontal, single-stage, multi-stage, single suction, double suction, self suction and other forms. The centrifugal pump drives the water to rotate through the high speed rotating impeller blade, and the water is thrown out so as to achieve the purpose of pumping water. The impeller rotates at high speed, forcing the liquid at the center of the impeller to be removed at high speeds, resulting in a low pressure at the center of the impeller, and the liquid in the lower trough is continuously sucked.
Q:Is the vacuum pump air compressor?
No, both work in the opposite way. Air compressor, referred to as an air compressor, is a machine that produces compressed air (positive pressure). The vacuum pump is just the opposite.
Q:How many pumps does the 80cm tank use?
Mainly look at the flow of the pump, all pumps have flow signs, such as 15L/HThe above is I at random, meaning that 15 litres per hour. You should calculate the volume of your cylinder, that is, the length of the tank, the width and the height of the water surface, the unit is cm. The result is 1000, which is the volume of your fish tank
Q:Why can the centrifugal pump hold down the pressure?
The pump before starting to pump shell and the water pipe filled with water, and then start the motor, the pump shaft to drive the impeller and water do high-speed rotation, centrifugal water movement, was thrown to the outer edge of the impeller, the pressure water pipeline flow through the volute pump into the pump shell.
Q:What are the meanings of the vacuum pump, the front pump and the main pump?
In operation, the main gas extraction limit vacuum is achieved by the main pump, so we call it the main pump, which plays the main role of the pumpThe front pump is the pump that needs to be opened ahead of the main pump. It is called the pump before the main pump and the pump running the main pumpIf you don't understand, look at your signature and ask again
Q:What is the difference between centrifugal pump and rotary vane pump?
This is a classification problem.Rotary is classified by movement, vane pumps are rotary, volumetric pumps are mostly rotary, piston pumps, etc., is reciprocating.
Q:What are the differences between the sewage pump and the clean water pump?
2. in order to prevent the wound, water pump impeller design is more simple but not ring pump, equipped with tips, cloth and other debris can be crushed after the pump, and the impeller water pump is relatively complex, but the efficiency will be significantly higher than the former.Why can't the sewage water pump and impeller: because features of key design, resulting in water pump for sewage situation is likely to occur, blocking, winding, wear and corrosion occurs, resulting in damage to pump or scrapped, so water pump can not be used for sewage.
Q:What is the working pressure of the hydraulic pump in the hydraulic transmission system?
Generally speaking, for the fixed size, not limited equipment, the pressure can be selected lower, walking machinery heavy equipment pressure should be selected higher.If the load is selected, the working pressure is as follows:Load <5kN, working pressure <0.8~1MPa;Load 5~10kN, working pressure 1.5~2MPa;Load 10~20kN, working pressure 2.5~3MPa;Load 20~30kN, working pressure 3~4MPa;Load 30~50kN, working pressure 4~5MPa;Load 50kN, working pressure =5MPa;For example, the system work pressure of various machines is as follows:Grinder 0.8~2MPaModular machine tool 3~5MPaLongmen planer 2~8MPaBroaching machine 8~10MPa agricultural machinery, small construction machinery, construction machinery, hydraulic drilling machine 10~18MPa hydraulic machine, large and medium-sized excavators, heavy machinery, lifting transportation machinery 20~32MPa.

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