WQK(V) Sewage Submersible Pumps

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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Packaging & Delivery

Packaging Detail:	Wooden packaging
Delivery Detail:	Within 20days after receipt of your order payment

Specifications

1.Submersion depth 5m
2.Head up to 35m
3.Flow rate up to 1800L/min
4.Passage of suspended solid up to 35mm

Range of Performance

Flow rate up to 1800L/min(108m3/h)
Head up to 35m

Application and Installation
They are recommended for draining dirty water and sewage in the domestic and civil sectors. Being equipped with a single-channel impeller, they are allowed to pump liquids containing suspended solid bodies with dimensions up to 35 mm and short fibres. They are ideal for pumping drainage water, sewage or waste water for a single dwelling, and for clearing surface or nuisance water. These pumps are outstanding in their reliability in fixed installations with automatic operation.

Operating Conditions

Submersion depth 5m
Liquid temperature up to +40oC
Ambient temperature up to +40oC
Max. Working pressure: 6 bar
Passage of suspended solid up to 35mm

Structure Feature

Pump body: Cast iron
Motor bracket: Cast iron
Impeller: Cast iron
Motor shaft: SS 420 or CS 45#
Mechanical seal: Ceramic - Graphite, Silicon carbide-Carbide alloy
Electric motor: Single-phase 220V - 50Hz with capacitor and thermal overload protector, three phases
380V -50Hz, Voltage fluctuation for 10% more or less is allowed and other voltage for 60Hz is also available.
Insulation: Class E
Protection: IPX8

Q:How accurate is the metering pump?: The measuring accuracy of the stable metering pump is as follows:In a diaphragm metering pump, the reciprocating motion of the plunger is passed to the diaphragm through the hydraulic chamber between the plunger and the diaphragm. In order to maintain the normal movement of the diaphragm, the hydraulic chamber is required to keep the volume of the liquid in the space (usually using hydraulic oil) unchanged. In order to ensure that the volume of the formation of membrane movement is always equal to the stroke volume of the plunger pump, so as to maintain the stability of the flow, but in the actual operation of the pump, the plunger seal will inevitably cause leakage at the same time, there may be a gas into the hydraulic chamber

Q:Operating procedures for measuring pumps: Pressurization(1) for the discharge pressure below 2.0MPa, then the pump stroke length should gradually increase, each increase of 20%, to maintain 15 minutes.(2) for the discharge pressure greater than 2.0MPa, you need a special pressure, to ensure that the pump discharge pressure gradually increased, each time for the final row pressure of 20%.(3) when the pressure is not increased, the stroke of the pump is gradually increased by 20% strokes per time.Note (1) when pressure is applied, the pressure gauge should be observed at the side of the loading side (slow motion)(2) check ammeter, forbid overload

Q:What should be used to pay attention to the use of mechanical pumps?: When opening the pump, first close the outlet valve, lift the pressure, then open the outlet valve again, pay attention to the flow of the motor.

Q:Which nuclear submarines use the shaftless pump technology?: Shaftless pumping technology and Simulation of shark skin technology are all the next generation of submarine propulsion technology. At present, there is no submarine in the world.

Q:When the water pump is started, why should it start when the outlet valve is closed? Thank you: And the pump at the start, if the valve opening pump, then the pump outlet pressure (head) is very small, so the pump flow will be great, the pump power is very large, causing the start-up current is very large. In addition, the starting current of the motor itself is also very large. These two factors add up to the possibility of overloading the motor, resulting in failure to start or even burn the motor.

Q:What is the difference between centrifugal pump and positive displacement pump?: The centrifugal pump is to rely on high-speed rotation of the impeller to do work on the fluid. These two types of pumps are also the most widely used.

Q:Attention should be paid to the use of pumps?: To carefully check whether there is a crack impeller, impeller fixed in the bearings are loose, if there are cracks and loose, hungry phenomenon should be promptly repaired, if the pump impeller above the soil should also be cleaned

Q:What is the cause of the damage of pump bearings?: First of all, know your pump model, and what is the bad bearing, in order to accurately judge for you. Because in addition to some common reasons, the structure of different pumps, bearing damage caused by the reasons are different. Otherwise it is fraught with itching shoes.

Q:Hydraulic pump displacement refers to the pump shaft what?: Just as you carry a spoon to the water. How much water can you pump at once (every turn)? That's the displacement.

Q:Brief description of centrifugal pump on / off operation: First, the preparation before the start(1) carefully check the inlet and outlet pipe line, valve, flange and pressure gauge joint of the pump, whether the installation is safe, comply with the requirements, whether the flow is correct, whether the anchor bolt and other connecting parts are loose or not.(2) add lubricating oil to the bearing case, and the oil level is 2/3 of the gauge of the bearing box.

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