Peristaltic pump tubes are often made of silicone materials, which are vulcanized by platinum. The silicone tubes designed for laboratory peristaltic pumps are very different from ordinary silicone tubes, mainly in tear resistance, tensile performance, resilience and pump tube dimensional tolerance control. aspect. Silicone tube has stable chemical properties, high mechanical strength and good thermal stability. It can also be used at high temperature of 200~300, and is not brittle at -60~-70. For a long time, silicone rubber has been considered as the material of peristaltic pump tubing due to its non-stickiness, no cracks, good surface activity and non-decomposition in the air.
What’s the lifetime of peristaltic pump tubing? How to improve the lifetime?
Features of peristaltic pump silicone tubing:
1. Non-toxic and tasteless, high transparency.
2. Good elasticity, no deformation, no cracking, long service life, high temperature resistance and cold resistance.
3. High tear resistance and excellent electrical properties.
As a peristaltic pump, ordinary silicon tube may encounter various damages in use. Under normal conditions, when the pump speed at 100 rpm and when liquid is delivered at room temperature, the life of the silicon tube can reach 400 часы, and the peristaltic pump silicon tube can reach 400 часы. 10,000 часы, but during use, due to a certain degree of corrosion of the peristaltic pump hose in the liquid, it will cause premature wear and abnormal wear of the hose.
Factors affecting the service life of peristaltic pump tubes
The peristaltic pump tube is the main working part of the peristaltic pump, and its performance directly affects the accuracy and stability of the peristaltic pump flow. As a flexible moving part, the tube has a certain service life and needs to be replaced regularly. There are many factors that affect the life of the peristaltic pump hose, the main factors are the running speed of the pump head, the material of the hose and the pressure tube gap between the pump head roller and the arc.
The speed of the pump head has a very large effect on the life of the hose. When choosing a peristaltic pump, you should try to choose a pump head with a larger flow rate, so that the required flow value can be achieved at a lower speed, and the service life of the hose can be extended to the greatest extent. The material of the hose also has a great influence on the life of the hose. Different hose materials have a very large difference in life under the same operating conditions. Domestic hoses are generally food-grade silicone hoses, and imported hoses have a long service life. Однако, the service life of imported hoses of some materials may be much shorter than that of domestic hoses, and they are only suitable for some special occasions. The impact of the pressure tube gap between the roller and the arc of the peristaltic pump on the life of the hose, the life of the pressure tube will be shorter than that of the low pressure tube pressure, because the damage of the hose is mainly manifested as fatigue damage, the pressure tube The smaller the gap, the greater the squeeze of the pump head on the hose, the easier the hose is fatigued and damaged, and of course the greater the outlet pressure of the pump head. After the pump hose is damaged, it mainly affects its own elastic recovery, and the inner diameter changes. During the use of the peristaltic pump, the flow change can be used to monitor whether the pump hose is damaged.
In addition to the size of the pressure tube gap, the factors affecting the life of the peristaltic pump hose also consider the uniformity of the pressure tube gap. Например, whether the curve of the arc is uniform, the machining error of the roller and the wheel, and the assembly error of the center of the roller and the center of the arc. If the pressure tube gap is not uniform, in order to ensure the air tightness of the pump head, the position at the minimum pressure will be subject to no air leakage, so that the other places will be overpressured (the gap is smaller than the normal value), which will make the hose The local lifespan is reduced.