Bornemann Screw Pump

Bornemann Screw Pump

Double suction design for large capacity
Product Features: 1. A wide range of transmission medium, with allowable certain amount of impurity in the medium;
2. Double layers of structure design, with comprehensive heating and thermal insulation for medium, as well as sufficient and rapid heating;
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Product Details

Double suction design for large capacity

Product Features:

1. A wide range of transmission medium, with allowable certain amount of impurity in the medium;

2. Double layers of structure design, with comprehensive heating and thermal insulation for medium, as well as sufficient and rapid heating;

3. A variety of bearing cooling modes available, with better protection of bearing and prolonged service life;

4. Optimized structure design, with allowable short period of dry operation (≤2min);

5. Extremely powerful self-priming capability and lower NPSHr value, and conveying a certain proportion of air-liquid mixed flow is achieved.

6. A variety of bearing cooling modes available, with better protection of bearing and prolonged service life;


Performance Viscosity: 2.0~100000 mm2/s

Flow:10~1500 m3/min

Maximum Pressure:2.5 Mpa

Maximum Temperature:180 ℃


Preparations for the first start of the twin screw pump:

1. All pipelines have been installed in place and leak and pressure tests have been carried out. All pipelines, valves and filters have been cleaned to ensure that all impurities in the pipeline have been removed.

2. Check and ensure that the pump shaft can rotate freely. If blockage and friction occur, it must be removed immediately.

3. Check and make sure that the direction of the force acting on the pump by the connection of the inlet and outlet pipelines of the pump does not exceed the allowable value.

4. Check whether the fastening bolts are firm and reliable.

5. Check whether the power supply is connected.


Basic Working Principle of Screw Pump

Screw pump uses the rotation of screw to suck and drain liquid. The intermediate screw is the active screw, which is driven by the prime mover. The screw on both sides is the driven screw, which rotates in reverse with the active screw.


Each screw meshes with each other. The screw and the inner wall of the liner closely cooperate. Between the suction and discharge ports of the pump, it will be separated into one or more sealing spaces. With the rotation and engagement of the screw, these sealing spaces are continuously formed at the suction end of the pump. The liquid in the suction chamber is sealed in it, and the liquid in the suction chamber is continuously moved from the suction chamber along the screw axis to the discharge end, and the liquid enclosed in each space is continuously discharged. This is the basic working principle of screw pump.

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