A high-precision ball peristaltic pump

Abstract

The invention discloses a high-precision ball type peristaltic pump which comprises a fixed part, a rotating part and multiple balls. The fixed part comprises a bottom disc and a body, and a center hole is formed in the bottom disc. The body is provided with a containing cavity, a hose holding channel and a pair of ball holding grooves correspondingly formed in the upper bottom face and the lowerbottom face of the containing cavity. The rotating part is arranged in the containing cavity and is provided with a T-shaped middle hole, and multiple ball containing grooves are formed in the side surface. A rotating shaft of the motor penetrates through the center hole of the bottom disc and is inserted and fixed in the T-shaped center hole of the rotating part. The multiple balls are arranged in the multiple ball containing grooves of the rotating part and are located between the pair of ball holding grooves. A hose is mounted in the hose holding channel. According to the high-precision ball type peristaltic pump, the rotating part rotating synchronously with the motor is used for driving rotating of the balls, meanwhile, the ball holding grooves of a circular track are used for fixingthe rotating track of the balls, the stable extrusion degree of the balls serving as an extrusion unit to the hose is ensured, and stability and reliability of the ball type peristaltic pump are greatly improved.

Description

technical field [0001] The present invention relates to the technical field of peristaltic pumps, in particular to a high-precision ball peristaltic pump. Background technique [0002] Peristaltic pump is a commonly used liquid delivery device, which has good stability in the process of liquid transportation, and is widely used in fields that require accurate quantitative and micro-flow liquid transportation. At present, the commonly used peristaltic pumps are of roller type and ball type according to the different extrusion parts. Among them, during the operation of the roller-type peristaltic pump, the roller as the extrusion unit needs to rotate around the central axis arranged at the center of the roller, so it is difficult to miniaturize. The ball-type peristaltic pump has a great technical advantage in the field of miniaturization and multi-channel applications due to the cancellation of the central axis setting in the center and the replacement of traditional rollers...

AI Technical Summary

Problems solved by technology

[0003] However, in the existing ball-type peristaltic pumps, the balls used are all arranged on the internal rotating parts that rotate synchronously with the motor shaft. Due to the influence of processing technology and processing accuracy, it is difficult to ensure that the positions of each roller are consistent. Therefore, each ball squeezes the hose differently, which directly affects the stability and consistency of the flow rate of the peristaltic pump.

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