An energy-saving peristaltic pump

Abstract

The invention relates to the technical field of fluid pumps, and discloses an energy-saving peristaltic pump, which includes a pump body, a hose and a driver. The inner wall of the pump body is provided with a hose, and the middle part of the pump body is provided with a driver. When the circle of the driver rotates, the magnetic force is used to drive and compress the magnet to extrude the hose to form a closed liquid section. The energy-saving peristaltic pump drives the compression magnet to squeeze the hose to drive the liquid flow through the magnetic force between the drive magnet and the compression magnet, without considering the problem of friction preventing the drive from rotating, so the compression force of the compression magnet on the hose The setting is relatively wide, and the extrusion force is reasonably set to eliminate the negative effects caused by the unevenness caused by the tolerance, improve the reliability of the peristaltic pump and improve the output accuracy, because the compression magnet only needs to overcome the hose and the fixed sleeve when squeezing the hose With its own elastic force, by reasonably setting the repulsive force between the fixed sleeve and the driving magnet, it can ensure that the fixed sleeve can squeeze the hose in place.

Description

technical field [0001] The invention relates to the technical field of fluid pumps, in particular to an energy-saving peristaltic pump. Background technique [0002] see Figure 5 , the driver of the peristaltic pump drives the pressure roller to rotate, squeeze the hose, so that the closed liquid in the hose flows, and at the same time, the hose recovers under the action of elastic force and sucks the liquid to form a new closed liquid section. In order to ensure the flow of the squeezed hose liquid , this process has high requirements on the thickness of the hose. Too thick will prevent the normal flow of the driver, and too thin will not be able to complete the plugging. At the same time, the pressure roller and the hose need to be set with appropriate size and pressure. In fact, due to When the pressure roller rotates in a circle and the shape of the hose can be different from the axis, the pressure roller squeezes the hose will produce local imbalance, the extrusion for...

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Problems solved by technology

[0002] see Figure 5 , the driver of the peristaltic pump drives the pressure roller to rotate, squeeze the hose, so that the closed liquid in the hose flows, and at the same time, the hose recovers under the action of elastic force and sucks the liquid to form a new closed liquid section. In order to ensure the flow of the squeezed hose liquid , this process has high requirements on the thickness of the hose. Too thick will prevent the normal flow of the driver, and too thin will not be able to complete the plugging. At the same time, the pressure roller and the hose need to be set with appropriate size and pressure. In fact, due to When the pressure roller rotates in a circle and the shape of the hose can be different from the axis, the pressure roller squeezes the hose will produce local imbalance, the extrusion force in some places is too large, while the extrusion force in other places is small, which affects the peristalsis The operating parameters of the pump, and the peristaltic pump is often used in high-precision scenarios, so the uneven local extrusion force will affect the normal use of the peristaltic pump

[0003] On the other hand, the long-term extrusion between the pressure roller and the hose, on the one hand, the shape of the hose changes, and the distance between the pressure roller and the hose may also change, which will change the operation of the peristaltic pump and reduce the output efficiency , and because the position of the hose is biased to one side, the force on the drive shaft is always on one side, and the force is uneven, which further aggravates the misalignment between the drive 3 and the hose 2

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