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2021

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05

Peristaltic pump: How much do you know about the actual situation of peristaltic pump?

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      Peristaltic pumpt usually refers to the pump with low output pressure and output flow of 0~30L/min in the industry. The peristaltic pump is generally 0.6~1Mpa when the discharge pressure is high in the industry, and the flow rate is generally 1 m3 to tens of m3/h, which is mainly used for transmission and filling of various liquids. It is mainly used in pharmaceutical, food and cosmetics industries with high requirements for hygiene. The peristaltic pump is easy to operate, the pipeline materials are various, and it is easy to replace, and it can transport liquids of various viscosities.

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Principle and advantages of peristaltic pump: peristaltic pump uses a rotating drum to squeeze the hose and transport fluid. The fluid only flows in the hose, does not contact the pump body, and does not cause cross contamination. At the same time, the conveying precision is high, and the shearing effect is small. Therefore, the peristaltic pump is widely used in scientific research, pharmacy, chemistry, food and beverage, printing and other fields.

With the development of science and technology, the performance of the peristaltic pump hose has been continuously improved, with strong corrosivity, strong permeability and better pressure resistance. Therefore, the peristaltic pump is often used to transport various special liquids, including strong acids, strong alkalis and organic solvents. Peristaltic pump drive is a high-precision equipment integrating machinery, electronics and software. It can receive various external control signals and achieve external signal control. Therefore, it is often used as an ideal equipment for industrial formulation and distributed control.

The pump head of the basic peristaltic pump is composed of a housing and wheels. The hose is located in the working ring between the housing pressure and the roller device. The hose is compressed to a sealed state. When the wheel device rotates, the cylinder squeezes the hose in turn, squeezing the fluid in the hose. After the cylinder squeezes, the hose returns to its original state, generating vacuum and absorbing the fluid. At one end between two wheels, the pump pipe forms a "pillow" fluid. The volume of the "pillow" depends on the inner diameter of the pump pipe and the geometric size of the wheel, and the flow depends on the rotation speed of the pump head. The product of the volume of the "pillow" and the three parameters of the "pillow" generated by the rotation of each wheel.

Features of peristaltic pump: The liquid only contacts the hose, and the pump and liquid will not cause cross contamination. The hose can be replaced to transport various fluids from the inlet to the outlet. Seamless, fluid tight, complete pump pipe is used. Good self-priming capability without backflow; It can transfer liquid, gas, solid or multiphase mixture. The hose material of peristaltic pump can withstand high temperature disinfection. Suitable for transport of shear sensitive liquids; Easy maintenance, just replace the hose.

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