Pump industry suppliers to tell you: single screw pump, twin screw pump, and the difference between the three screw pump

single screw pump, double screw pump and the difference between the three screw pump

single screw pump as the name suggests that only a screw inside the pump. Follow the habit of screw pump industry in China named, screw is referred to as the rotor of the single screw water pump, screw sleeve is called the stator. Driven by external power supply designed and stator meshing, constitute the discharge and suction people cavity sealing cavity apart, the pump can work effectively.

a decade development of some foreign manufacturers double spiral rotor and three internal gear helix single screw pump stator meshing progress quickly, the individual manufacturers have been the main exhibition to mass production and sales. There are a few manufacturers to develop in our country, it is in the phase of development.

double screw pump is to use synchronous gear transmission, connect the two sets of spiral, no contact between the spiral, no mechanical friction, long service life. Single screw pump is the rubber sets of the stator and rotor tooth and, using the medium lubrication, friction rubber set of easy to damage, general life in about half a year, pump lubrication is suitable for medium, if there are impurities will greatly reduce the service life. But the double screw pump its shortcoming is also very obvious: higher machining precision requirement, increasing the difficulty of processing, especially the machining accuracy is not enough will affect the matching of the rotor and stator evenness, make the advantages of no longer exists; And processing time and the production cost is higher, this is the reason why now production is less.

of course, also can make more single screw pump rotor and stator helical quotas, such as the three screw head of the two inner spiral stator and rotor pump, etc. , but the demand for manufacturing precision is higher, and the traffic is not always increase with the increase of spiral Numbers, so there is no much practical significance. Although the more Numbers of rotor and stator spiral meshing pair in a single screw pump has not been applied, but in the field of petroleum machinery of screw drill tool has been widely applied.

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