How much pressure can a peristaltic pump generally achieve? To understand this problem, we must first understand how the peristaltic pump generates pressure. The peristaltic pump uses a roller to squeeze the hose to transport the liquid. In order to prevent the liquid from flowing back, the seal must be maintained at all times, and the seal will have a certain pressure. So what is the magnitude of the pressure? It is related to the tightness of the pressure tube. The looser the pressure tube, the smaller the pressure, the longer the life of the hose. When the hose is not sealed, there is no pressure. On the contrary, the tighter the pressure tube, the higher the pressure, the tighter the pressure. At the same time, the hose will have a relatively large fatigue wear and the hose life will be short.

In summary, the pressure of the peristaltic pump is determined by the pressure of the pressure tube, which is why the same type of peristaltic pump is applied to the same wall thickness, the inner diameter and the outer diameter are not critical, as long as the wall thickness The same (the wheel is long enough) can use the same pump head. But the problem is coming. If the hose is also 2.4mm thick, there is definitely a certain error between the manufacturer and the manufacturer. Even if the hose is produced by the same manufacturer, there will be ±0.1mm. The error, and for the pressure of the peristaltic pump, the error of 0.1mm is enough to cause a large pressure difference, that is to say, in the case of a certain gap of the pressure tube, the hose is different, the pressure will be different, correspondingly, the hose Life expectancy will be different.

In practical applications, the excellent peristaltic pump design will be equipped with a pressure regulating function to adapt to the size difference between different manufacturers, domestic and imported pump tubes. This feature is critical for pumps with a wall thickness of less than 2.4 mm, as small errors can result in large differential pressures. Another application of this function can be achieved by adjusting the pressure in situations where different pressures are required. Of course, the pressure range here is within the range that the peristaltic pump can withstand.

The pressure range of the peristaltic pump with a wall thickness of 2.4 mm or less is about 0-0.25 Mpa; the pressure range of the peristaltic pump with a wall thickness of 4.8 mm or more is about 0-0.6 Mpa. The main factor affecting the peristaltic pump pressure is the wall thickness of the hose. The thicker the wall thickness, the greater the pressure bearing capacity of the hose, and the greater the pressure that can be achieved.

If the pressure required by the customer is greater than 0.6Mpa, it is not recommended to use a peristaltic pump. The main advantage of the peristaltic pump is that it is hygienic and has no cross-contamination, but it is not as good as a plunger pump and a gear pump in handling very large pressure problems, among which the plunger The pump is the most powerful type of pump available in all pumps.

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