The screw pump is widely used in conveying water, wet sludge and flocculant liquid in sewage treatment plant due to its characteristics of variable transport, strong self-absorption capacity and reversible ability, as well as conveying liquid containing solid particles.
Screw pump selection should follow the economic, reasonable, reliable principle.
If in the design and selection of poor consideration, will bring trouble to the future use, management, maintenance, so the selection of a production according to the actual needs, reasonable and reliable screw pump can not only ensure smooth production, but also reduce the cost of repair.
A linear relationship with screw pump flow rate and rotational speed, low relative to the rotating speed of screw pump, high rotational speed of screw pump, although can increase the flow and head but power obviously increase, high speed accelerate the abrasion between the rotor and stator, must make the premature failure of screw pumps and high speed of the screw pump stator length is short, easy to wear and tear, thus shortening the service life of the screw pump.
By reducing speed reducer or stepless speed regulating mechanism to reduce the speed, so that the survey speed is kept in a reasonable range of less than three hundred revolutions per minute, compared with the high-speed operation of screw pump, the service life can be extended several times.
Progressing cavity pump is widely used in conveying water, wet sludge and flocculant liquid in sewage treatment plant due to its characteristics of variable transport, strong self-absorption capacity, reversible, and conveying liquid containing solid particles.
Screw pump due to the structure and working characteristics, compared with piston pump centrifugal pump, vane pump, gear pump has the following advantages:
Screw pump can transport high solid content medium.
Even flow pressure is stable, especially at low speed.
Flow and screw pump speed is proportional to the good variable adjustability.
A pump can be used to transport different viscosity of the medium.
Screw pump installation position can be arbitrary tilt.
Suitable for conveying sensitive goods and goods vulnerable to centrifugal force.
Screw pump small volume, light weight, low noise, simple structure, easy maintenance.
Screw pump can be widely used in the following industrial sectors, conveying a variety of media.
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