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The use of the peristaltic pump technique

Release date:Nov 22, 2022 Source:PreFluid Pageviews:-
Peristaltic pump is also known as constant current pump and hose pump. The mechanical principle of peristaltic pump is very simple. It pumps fluid by alternately squeezing and releasing a pump tube. It's like squeezing a fluid-filled hose with two fingers.
Peristaltic pump is also known as constant current pump and hose pump. The mechanical principle of peristaltic pump is very simple. It pumps fluid by alternately squeezing and releasing a pump tube. It's like squeezing a fluid-filled hose with two fingers. As your finger moves, negative pressure forms inside the pipe and the fluid flows!

Skill 1: When the peristaltic pump does not work, the pressure block should be loosened to extend the service life of the pump pipe. The peristaltic pump produces suction and fluid transfer through the compression hose and the natural rebound of the hose. In order to maintain the long life of the pump tube, when the pump is not used, try to lift the pump head block, so that the pump tube is in a natural state from pressure, thus extending the service life of the pump tube.

Skill 2: Under the premise of meeting the flow rate of peristaltic pump, try to reduce the pump speed to less than 300 RPM. The flow of the peristaltic pump is generated by the rotation of the pump head. The faster the rotation, the less time the pump tube will last. Therefore, when the pump tube is used for a long time, the larger diameter of the pump can be selected to reduce the speed of the pump.

Skill 3: Pump head using peristaltic pump special pipe, the rest of the connecting pipe can be used ordinary pipe. Because the extruded tube used on the peristaltic pump has good compressive elasticity and tearing, the material purity of these pump tubes is relatively high, and the geometric dimension accuracy is high, leading to the high price of peristaltic pump tubes.

Skill 4: The inlet of the peristaltic pump pipe should be as short as possible, and the joint and diameter of the pipe should not be lower than the diameter of the stuck pipe installed at the pump head. The suction of a peristaltic pump is caused by the rebound of the pump tube. If the pipe, especially the inlet pipe passing long or small diameter, the suction end resistance is too large, the pump pipe rebound resistance is too large, the actual transmission flow loss. Similarly, if the diameter of the outlet line is small or too long, because the discharge pressure of the peristaltic pump is usually small, when the discharge resistance is too large, the output flow will be reduced.

Skill 5: Peristaltic pump selection, the theoretical flow is greater than the actual flow, preferably greater than 30%. The peristaltic pump tube is soft, so the negative pressure and discharge pressure are small. If the liquid being transported has viscosity or pipe length, there will be an actual flow loss. To achieve the desired flow selection, the theoretical flow is slightly higher than the actual flow.

Skill 6: During the use of peristaltic pump, attention should be paid to cleaning the debris on the pump shell and pump pipe. As the peristaltic pump is a comparative instrument, it mainly relies on the pump shell to maintain the clearance, so as to effectively squeeze the pump tube. If the pump tube is damaged and the incoming liquid adheres to the pump shell wheel, block and pump tube, it will change the compression clearance of the pump head. Even if the change is small, it will lead to premature wear of the pump tube, which seriously affects the damage of the pump head to the pump head.

Skill 7: When using the peristaltic pump, the wear of the pump pipe should be checked regularly. Because the peristaltic pump tube is a wearing part, once damaged, it will lead to liquid leakage, so it should be timely checked whether the pump shell surface has early wear, in order to prevent the damage of the pump tube.

Skill 8: When selecting the peristaltic pump, pay attention to whether the liquid to be transported will be the pump pipe. Due to the large amount of materials in the pump tube and the variety of liquids transported, no pump tube can bear all the liquids. Therefore, it is necessary to ensure the use of the pump tube and confirm its liquid type through chemical phase dissolution table or immersion test.

The above is the introduction of the use of peristaltic pump. I believe you have the corresponding understanding after reading, can be used as a reference, I hope to help you.
【Tag of this article】:The use of the peristaltic pump technique
【Editor】:PreFluidall rights reserved:https://www.prefluid.netPlease indicate the source

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