Analysis of several cases of peristaltic pump hose and pump tube damage

July 16, 2023

Peristaltic pump hose as a peristaltic pump may encounter various damages during use. Under normal conditions, 100 rpm pump speed can be used to deliver normal temperature liquid. The life of silicone tube can reach 200-400 hours. Imported A-60- The F pump tube can reach 2000-10000 hours. However, during use, the hose pump may be prematurely worn and abnormally worn due to incorrect clamping of the peristaltic pump hose or corrosive liquid. What is the cause of these damages? Do a simple analysis of this issue today.

1. See the damage of the peristaltic pump hose from the damaged break. Cause: If the damaged peristaltic pump hose is a sharp cut like a knife, it is usually the runner and flange of the peristaltic pump head. Cut off. The reason for this damage is usually because the hose inside the pump head is too long. When the pump head of the peristaltic pump is running, the hose shakes in the pump head and contacts the flange edge of the runner. The flange is continuously rubbed and soft. tube. This process of damage can be very fast and usually breaks completely in about ten minutes. Along with the damage of the pump tube, a lot of hose slag is generated in the pump.
Solution: 1. When installing the pump tube, make sure that the pump tube in the pump head is straightened, and there will be no excessive hoses in the pump head. 2. At the same time, put a special plastic clamp (as shown in the figure) at the position of the hose pump inlet and outlet near the pump head tube to prevent the peristaltic pump hose from loosening during operation.

2, from the shape of the damaged hose to see the cause of the damage: the hose appears completely flattened, lost resilience, the hose wall thickness is thin, the surface wear is serious. This phenomenon is usually caused by the stuck wheel, the surface of the peristaltic pump block contacting the pump tube and the impurities on the runner, and the rotation speed is too high. After the runner of the peristaltic pump head is stuck, the runner of the peristaltic pump directly scrapes through the peristaltic pump hose, which increases the friction of the surface of the hose, causing the surface temperature of the hose to rise very high and the surface of the hose to be worn too high. The temperature also causes the hose to lose its elasticity. In extreme cases, the temperature generated above 140 degrees may cause the hose to melt and deform.
Solution: Pay attention to check whether the operation of the peristaltic pump head runner is flexible; pay attention to cleaning the pump head pressure tube surface; appropriately reduce the speed of the peristaltic pump operation.

3. From the size and shape of the damaged peristaltic pump hose, the cause of the damage: the peristaltic pump hose may carry different liquids, and some liquids may corrode and dissolve some of the hoses. If we see that the peristaltic pump hose becomes brittle, hard, loses its elasticity, discolors, swells, breaks, etc., it is usually caused by the hose being unable to deliver the liquid.
Solution: Find the hose material that will not be corroded by the liquid that is transported by yourself. Jieheng Peristaltic Pump Co., Ltd. has a wide selection of pump tubing materials, which can provide experimental reference data for chemical compatibility of most liquids. A deep chemical table is available to help you choose the right hose. You can also take some samples of the hose to do the soaking test to make sure the hose is not rotted by liquid.

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Author:

Mr. Bruce Tang

E-mail:

bruce.tang@macxipump.com

Phone/WhatsApp:

+8613773149257

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