Peristaltic pump is also known as constant flow pump and hose pump. The mechanical principle of peristaltic pump is very simple. It pumps fluid by alternately squeezing and releasing the pump tube. It's like squeezing a liquid filled hose with two fingers. As the finger moves, negative pressure forms inside the pipe and the liquid flows!
Skill 1: When the peristaltic pump does not work, the pressure block should be loosened to extend the service life of the pump tube. Peristaltic pumps generate suction and fluid transfer by compressing the hose and the hose's natural rebound. In order to maintain the long life of the pump tube, when the pump is not used, the pump head block is lifted as far as possible, so that the pump tube is in a natural state without pressure, thus extending the service life of the pump tube.
Skill 2: Peristaltic pump under the premise of meeting the flow rate, 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. If the rotation is faster, the pump tube will be used for less time. Therefore, when the pump tube is used for a long time, a pump with a larger diameter 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 extrusion tubes used on peristaltic pumps have good compressive elasticity and tearing, the material purity of these pump tubes is relatively high, and the geometric accuracy is high, resulting in the price of peristaltic pump tubes is high.
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 pipe installed in the pump head. The suction of the 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 transport 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: When the peristaltic pump is selected, 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 less. If the delivered liquid has viscosity or pipe length, it will cause an actual flow loss. To achieve the desired flow rate selection, the theoretical flow rate is slightly higher than the actual flow rate.
Skill 6: The peristaltic pump should pay attention to cleaning the debris on the pump shell and pump pipe during use. Because the peristaltic pump is a comparative instrument, mainly rely on the pump shell to maintain the gap, so as to effectively squeeze the pump tube, if the pump tube damage the flow of liquid adhere to the pump shell wheel, block and pump tube, will change the compression gap of the pump head, even if the change is small, it will lead to premature wear of the pump tube, seriously affecting 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. Since 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 to prevent damage to the pump tube.
Skill 8: When choosing a peristaltic pump, pay attention to whether the liquid that needs to be transported will be a pump tube. Because the pump tube material is more, the type of liquid transported is more, no pump tube can withstand all the liquid, it is necessary to ensure the use of the pump tube through the chemical phase melting table or immersion test, to confirm its liquid type.
The above is an introduction to the use of peristaltic pump. I believe that after reading all have a corresponding understanding, can be used as a reference, I hope to help you.