How much do you know about the use of peristaltic pumps?

How much do you know about the use of peristaltic pumps? Peristaltic pumps are also called constant flow pumps and hose pumps.
The mechanical principle of peristaltic pumps is very simple
.

It pumps fluid by alternately squeezing and releasing the pump tube
.

Just like squeezing a hose filled with liquid with two fingers, with the movement of the fingers, negative pressure is formed in the tube, and the liquid flows with it! Tip 1: When the peristaltic pump is not working, the pressure block should be released to prolong the life of the pump tube
.

The peristaltic pump relies on the compression hose and the natural rebound of the hose to generate suction and fluid delivery.
In order to maintain the longevity of the pump tube, try to lift the pressure block of the pump head when the pump is not in use, so that the pump tube is naturally uncompressed.
status, thereby extending the life of the pump tube
.

Tip 2: When selecting a peristaltic pump, on the premise of satisfying the flow rate, the pump speed can be reduced 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 shorter the use time of the pump tube, so when you want the pump tube to last longer, you can choose a pump with a larger diameter as much as possible.
This reduces the speed of the pump
.

Tip 3: Use a special tube for peristaltic pump on the pump head, and use ordinary pipes for other connecting tubes
.

The extruded tubes used in peristaltic pumps require good compression resilience and tear resistance, so the material purity of these pump tubes is relatively high and the geometric dimension accuracy is high, which will result in higher prices of peristaltic pump tubes
.

Tip 4: The inlet of the peristaltic pump tube is as short as possible, and the joint and diameter of the pipeline should not be lower than the diameter of the card tube installed in the pump head
.

The suction force of the peristaltic pump is generated by the rebound of the pump tube.
If the pipeline, especially the inlet pipeline, is too long or the diameter becomes smaller, the resistance at the suction end will be too large.
If the resistance is too large, the rebound of the pump tube will be blocked.
loss of traffic
.

Similarly, if the diameter of the outlet pipeline becomes smaller or the pipeline is too long, since the discharge pressure of the peristaltic pump is usually small, when the discharge resistance is too large, the output flow will be reduced
.

Tip 5: When selecting a peristaltic pump, the theoretical flow rate should be greater than the actual flow rate, preferably greater than 30%
.

The peristaltic pump tube is soft, so the negative pressure and discharge pressure generated by it are small.
If the liquid to be transported has viscosity or the length of the pipeline, it will cause the loss of actual flow.
In order to achieve the required flow, the theoretical flow is selected.
slightly higher than the actual flow
.

Tip 6: During the use of the peristaltic pump, pay attention to cleaning the sundries on the pump casing and pump tube
.

Since the peristaltic pump is a comparative instrument, it mainly relies on the pump casing to maintain a high-precision gap, so as to squeeze the pump tube efficiently.
Changing the compression gap of the pump head, even a small change will cause excessive and premature wear of the pump tube, which will seriously affect the pump head and cause damage to the pump head
.

 　　Tip 7: When the peristaltic pump is in use, check the wear of the pump tube regularly
.

Because the peristaltic pump tube is a vulnerable part, once it is damaged, it will cause liquid leakage.
Therefore, it is necessary to check whether the surface of the pump casing has early grinding holes to prevent the pump tube from being damaged
.

 　　Tip 8: When choosing a peristaltic pump, pay attention to whether the liquid to be transported will corrode the pump tube
.

Because the pump tube is made of many materials and conveys many types of liquids, no pump tube can withstand all liquids, so you need to confirm the type of your own liquid, and compare it through the chemical compatibility table or ensure the pump tube through the immersion test.
can be used
.

 　　The above is an introduction to the use of peristaltic pumps.
I believe that everyone has a corresponding understanding of this after reading.
You can use it as a reference and hope to help you
.