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How to Improve the Efficiency of Peristaltic Pumps

time:2018-10-17 15:38:00 read:

        In recent years, the food and pharmaceutical industry in China has experienced rapid development. As a standard component of the food and pharmaceutical manufacturing machinery industry, peristaltic pumps have gained widespread favor among users, leading to intensifying market competition. Industry insiders indicate that as a device for pumping fluids, peristaltic pumps prioritize high work efficiency, especially in today's era of high-speed production.

        So, how can peristaltic pumps achieve higher work efficiency when in use?

1. Loosen the pressure block when the pump is not in operation
Loosening the pressure block on the peristaltic pump when it is not in use can extend the lifespan of the pump tube. Peristaltic pumps rely on compressing the flexible hose and allowing it to naturally rebound to generate suction and transport fluids. To maintain the longevity of the pump tube, it is recommended to lift the pump head pressure block as much as possible when not using the pump, allowing the pump tube to remain in a natural unpressurized state.

2. Minimize pump speed as much as possible
When selecting a peristaltic pump, it is advisable to keep the pump speed below 300 revolutions per minute while meeting the required flow rate. The flow rate of a peristaltic pump is generated by the rotation of the pump head. If the rotation speed is too high, the lifespan of the pump tube will be reduced. Therefore, if a longer tube life is desired, a larger tube diameter can be chosen to reduce pump speed.

3. Selection of peristaltic pump pipes
It is recommended to use specialized peristaltic pump pipes on the pump head and regular pipes for other connections. Peristaltic pump tubes require excellent compressive resilience, tear resistance, and higher purity material due to their precise wall thickness and shape precision, resulting in higher prices. Using regular pipes for connections is more cost-effective.

4. Size selection of pipe fittings and diameters
The inlet of the peristaltic pump tube should be as short as possible, and the diameter and fittings of the pipeline should not be smaller than the diameter of the tube installed on the pump head. The suction force of a peristaltic pump is generated by the rebound of the pump tube. If the inlet pipeline, especially if it is too long or has a smaller diameter, creates excessive resistance at the suction end, the rebound of the pump tube will be hindered, resulting in significant loss of actual flow rate. Similarly, if the outlet pipeline diameter becomes smaller or if it is too long due to the relatively low discharge pressure of a peristaltic pump, excessive resistance at the outlet will result in reduced output flow rate.

5. Theoretical flow rate should be slightly higher than actual flow rate
When selecting a peristaltic pump, the theoretical flow rate should be greater than the actual flow rate by at least 30%. Due to their soft nature, peristaltic pump tubes generate lower negative pressure and discharge pressure. If the liquid being transported has a certain viscosity or if the pipeline has a certain length, there will be a loss in actual flow rate. To achieve the required flow rate during operation, the theoretical flow rate should be slightly higher than the actual flow rate during pump selection.

6. Keep the pump housing and tubes clean
During peristaltic pump usage, it is important to regularly clean debris from both the pump housing and tubes. Peristaltic pumps are precision instruments that rely on maintaining accurate clearance between the pump housing and tubes to compress the tubes effectively. If fluid leakage occurs due to damaged tubes and adheres to components such as the pump housing's pressure wheel, pressure block, and tubes, it can alter the tightness clearance of the pump head, even if it is only a slight change, which can lead to premature wear and damage to the pump tubes, potentially affecting the entire pump head.

7. Regular inspection to prevent tube damage
Peristaltic pumps should undergo regular inspections to check for wear and tear on the tubes during operation. Since peristaltic pump tubes are consumable parts, once they become damaged, fluid leakage may occur. It is important to check for signs of early wear on the pump surface to prevent damage to the tubes before they become irreparable.

8. Tube material selection
When selecting a peristaltic pump, it is essential to consider whether the liquid being transported can corrode the tube material. There are various tube materials available for peristaltic pumps, and different types of liquids may cause corrosion issues. It is crucial to confirm the type of liquid being used and consult chemical compatibility tables or conduct immersion tests to ensure that the selected tube material is suitable for use with that specific liquid.

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