The screw pump is a volumetric rotor pump, which depends on the volume change of the sealing cavity formed by the screw and bushing to breathe and discharge the liquid. The screw pump is divided into single screw pump, double, three and five screw pump according to the number of screw screws. It has the advantages of smooth flow, small pressure pulsation, low self absorption, low noise, high efficiency, long life and reliable operation. The most prominent thing is that when the conveying medium is not formed, it is not sensitive to the viscosity of the medium, and it can transport high viscosity medium. The following Huaian dosing pump manufacturers of small editor to analyze the working principle of screw pump:

The 1. screw pump uses the rotation of the screw to suck out the liquid.

Due to the mutual engagement of the screws and the close coordination of the screw and the inner wall of the liner, they will be divided into one or more seal spaces between the suction port and the discharge port of the pump. With the screw rotation and meshing, the sealed space in the pump suction side evolving, the suction chamber of liquid filled therein, and a suction chamber along the screw axis continuous passage to the discharge end, will be closed in the space of continuous discharge of liquid, like a nut in screw rotation is constantly advancing so, this is the basic principle of the screw pump.

2. screw pump is that when the screw pump is working, the liquid will be threaded into the sealing space surrounded by the screw and the pump casing when it is inhaled. When the active screw is rotated, the sealing volume of the screw pump can increase the screw pump pressure and move along the axis when the screw teeth are extruded. As the screw is rotated at the same speed, the flow rate of the liquid is also uniform.

Advantage：

Screw pump can transport lubricating oil, transport fuel, transport a variety of oil and polymer polymer, used to transport viscous liquid.

The transport of high viscosity medium: according to the size of the pump can transport different viscosity from the CPS medium.

The medium can be transported with particles or fibers: the diameter of the particle can be 30mm (not more than the rotor eccentricity). The fiber length can be 350mm (the pitch of a fairly 0.4 bit rotor). Its content is generally up to 40% of the medium cellar. If the solid in the medium is fine powder, the maximum content can be up to 60% or higher and can also be transported.

When the pressure is stable and the natural structure of the medium is not damaged, it is ideal to choose a single screw pump.