Peristaltic pump with high flow accuracy

Abstract

The invention relates to the technical field of peristaltic pumps, and discloses a peristaltic pump with high flow accuracy. The peristaltic pump with the high flow accuracy comprises a pump shell, a hose is arranged in the pump shell, a pump head positioned on the inner side of the hose is arranged in the pump shell, two clamping sleeves are fixedly connected to the side surface of the pump shell in a sleeving mode, the corresponding ends of the two clamping sleeves are fixedly connected with the two ends of the hose respectively, an adjusting pipe is arranged on the side face of the pump shell, a flow guide pipe opening and a guide-in pipe opening are formed in the side face of the adjusting pipe, and the flow guide pipe opening and the guide-in pipe opening are fixedly connected with the two clamping sleeves correspondingly. The two ends of the hose communicate with inner cavities in the two sides of the adjusting pipe, an adjusting device and a flow guiding device arranged in the adjusting pipe are matched, and the flow of fluid flowing out of a drainage pipe opening is adjusted through the adjusting device, so that the pumping flow is controlled; and compared with an existing mode that the liquid flow is controlled by extruding the hose, the control over the flow is more convenient, and meanwhile, the problem that the flow control accuracy is not high due to the elastic characteristic of the hose when the hose is extruded is effectively avoided.

Description

technical field [0001] The invention relates to the technical field of peristaltic pumps, in particular to a peristaltic pump with high flow accuracy. Background technique [0002] Peristaltic pumps are mainly used for the transmission and filling of various liquids. They have a wide range of applications, involving chemical industry, mining, metallurgical industry, paper industry, paint industry, food industry, ceramic industry, petroleum industry and other fields. Peristaltic pumps are non-polluting , easy adjustment of flow rate, high stability, low shear force, etc. It mainly squeezes and releases the elastic delivery hose alternately through the rotation of the pump head to pump fluid, and its flow adjustment mainly depends on the speed of the pump head. [0003] However, when the existing peristaltic pump controls the flow rate by controlling the speed of the pump head, it is necessary to conduct a large number of experiments to obtain the relationship between the spee...

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Problems solved by technology

[0003] However, when the existing peristaltic pump controls the flow rate by controlling the speed of the pump head, it is necessary to conduct a large number of experiments to obtain the relationship between the speed and the flow rate of the pumped fluid according to the diameter of the hose, which makes the calculation of the flow control of the peristaltic pump troublesome, resulting in The error is larger, and some existing methods control the flow of the fluid by squeezing the hose. Although it is more convenient than the calculation of controlling the speed of the pump head, after the hose is squeezed, the flow control is accurate due to the elastic characteristics of the hose itself. The problem is that the pressure is not high, and when the degree of blocking the discharge nozzle is set at the outlet end of the hose to control the flow rate, the fluid pressure in the hose will increase, which will easily lead to the problem of hose falling off, expansion and damage

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