The basic working principle of the screw pump is introduced

According to the number of screws, the screw pump can be divided into a single-look rod pump, a double-screw pump, a triple-screw pump, and a five-screw pump. The use of screw pumps is also very extensive and is involved in the food industry, the textile industry, the chemical industry, the construction industry, and even the nuclear industry. Below we will explain the basic working principle of the screw pump in detail through the schematic diagram of the screw pump.

The basic working principle of the screw pump 1. The screw pump uses the rotation of the screw to suck and discharge the liquid. The figure shows a cross-sectional view of a triple screw pump. In the figure, the middle screw is the active screw, which is driven by the prime mover. The screw on both sides is the driven screw and rotates in reverse with the active screw. The lead screw of the driven screw is double-threaded.

Due to the mutual engagement of the screws and the close fit of the screw with the inner wall of the liner, it is divided into one or more sealed spaces between the suction inlet and the discharge outlet of the pump. With the rotation and engagement of the screw, these sealed spaces are continuously formed at the suction side of the pump, the liquid in the suction chamber is sealed therein, and the suction chamber is continuously pushed along the axial direction of the screw to the discharge end, and will be enclosed in each space. The continuous discharge of liquid is like a nut that is continuously pushed forward while the screw is turning. This is the basic working principle of the screw pump.

2. The basic working principle of the screw pump is: when the screw pump is working, the liquid is sucked into the sealed space enclosed by the thread and the pump casing. When the active screw rotates, the screw pump sealing volume increases the screw pump under the compression of the screw teeth. Pressure and move in the axial direction. Since the screw is rotating at a constant speed, the flow out of the liquid is also uniform.

Screw pump features: low loss of the screw pump, good economic performance. The pressure is high and uniform, the flow rate is uniform, the rotation speed is high, and it can be directly connected with the prime mover.

The screw pump can transport lubricating oil, deliver fuel, and transport various oils and polymers to deliver viscous liquids.

Transport high-viscosity media: 3. According to the size of the pump can be sent from the centimeter viscosity media.

Media containing particles or fibers: The particle diameter can be 30mm (no more than rotor eccentricity). The fiber length can be 350mm (equivalent to the pitch of a 0.4-position rotor). Its content is generally up to 40% of the medium pit. If the solid content in the medium is a fine powder, the highest content can reach 60% or more can also be transported.

When the delivery pressure is required to be stable and the inherent structure of the medium is not damaged, the single screw pump is ideal for transport.

The screw pump has the advantages of smooth flow, long service life, low noise, etc. It does not generate eddy currents when transporting media, and can also transport high viscosity media. After understanding the basic working principle and advantages of the screw pump, we must also pay attention to the maintenance of the screw pump. Careful maintenance must be performed daily, weekly, quarterly, and annually to ensure its high efficiency.