Screw pumps are divided into three types: single screw pump, twin screw pump and triple screw pump.
The single screw pump is mainly composed of a screw rotor and a rubber stator. The motor drives the rotor to rotate, and the rotor and the stator form a dynamic closed volume cavity. As the helix moves forward, it will achieve the purpose of conveying the medium.
The twin-screw pump is a pair of gears driven by the motor to rotate synchronously, and the gear drives two groups of spirals to rotate synchronously through two shafts, thus forming a dynamic volume cavity, but there will be a certain gap if there is no contact between the spirals. in this way, the service life of the screw pump will be very high.
The three-screw pump is that the motor rotates with an active screw, and the main screw rotates in the opposite direction with two driven spirals, thus conveying the medium, but because it is mainly from the main rod with the slave rod, it will wear out a lot. Therefore, it is generally used to transport lubricating medium. But because of the close contact, the sealing effect is good and the output pressure is high.
Screw pump is mainly used to transport viscous media, such as oil products, viscose and so on. Screw pump because the price is higher than the pump, so the application link is relatively bad, other pump transport difficult links, choose screw pump.
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