Rolling ball type peristaltic pump with gear-like structure

Abstract

The invention relates to a peristaltic pump, in particular to a rolling ball type peristaltic pump with a gear-like structure, and aims to provide a peristaltic pump which is low in energy consumption, stable in flow speed, simple and compact in structure and easy to integrate. According to the technical scheme adopted by the invention, the peristaltic pump comprises a base, a rotating piece and an upper cover. The rotating piece is in a gear shape; rolling ball accommodating grooves are formed in gear ends; and rolling balls are arranged in the rolling ball accommodating grooves. A centre hole is formed in the centre of the upper cover; fixing holes are formed in the periphery of the upper cover; and a rotating piece retaining hole is formed in the lower end surface of the upper cover. Apump pipe guide hole is formed in the upper cover; and a pump pipe extends out of the base from the pump pipe guide hole. According to the rolling ball type peristaltic pump with the gear-like structure, rolling posts are replaced by rolling balls to serve as an extruding part, so that the friction with the pump pipe is reduced, the energy consumption is reduced and the wear to the pump pipe is also reduced; used materials are reduced to a certain degree through the rotating piece of a gear structure, so that the rolling ball type peristaltic pump with the gear-like structure has the characteristics of small volume and light weight; tooth number of the gear-shaped rotating piece can be increased or decreased according to actual situations so as to meet actual requirements to the maximum extent.

Description

technical field [0001] The invention relates to a pump for conveying fluid, in particular to a ball-type peristaltic pump with a tooth-like structure. Background technique [0002] Peristaltic pump is a commonly used fluid delivery device. Its principle is to deliver fluid by alternately squeezing and releasing the elastic delivery hose; it has the advantages of no pollution, high precision, low shear force, good sealing, and simple maintenance. . [0003] At present, cylindrical or disc-shaped rotating parts are used in peristaltic pumps. On the one hand, the large-area contact with the extruded parts of the pump tube will increase friction, and on the other hand, a large driving force is required. However, the rotating parts of this shape Not all parts are involved in the work of the peristaltic pump, which will cause waste of energy and materials. [0004] At the same time, the extruded parts of the pump tube are of roller structure. Due to the poor finish of the roller...

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Problems solved by technology

[0003] At present, cylindrical or disc-shaped rotating parts are used in peristaltic pumps. On the one hand, the large-area contact with the extruded parts of the pump tube will increase friction, and on the other hand, a large driving force is required. However, the rotating parts of this shape Not all parts are involved in the work of the peristaltic pump, which will cause waste of energy and materials

[0004] At the same time, the extruded parts of the pump tube are of roller structure. Due to the poor finish of the roller surface, the friction on the pump tube is serious, which will cause energy loss; the greater friction and the larger contact surface will affect the pump. Excessive stretching or deformation of the tube will affect the flow rate and also affect the service life of the pump tube

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