Control method and device for peristaltic pump to transmit viscous liquid, and peristaltic pump

Abstract

The invention relates to a control method and device for viscous liquid transmission by a peristaltic pump and the peristaltic pump. The method comprises the steps of obtaining multiple sets of data of transmitted viscous liquid, wherein the multiple sets of data comprise N sets of rotating speed data of the transmitted viscous liquid and liquid flow data corresponding to the N sets of rotating speed data; fitting the multiple sets of data into the corresponding rotating speed flow curve through the preset algorithm; according to the first flow value and the rotating speed flow curve set through the transmitted liquid, obtaining the corresponding first rotating speed value, and according to the first rotating speed value, setting a motor. Through the method, a user can use freely set the transmission flow and accurately obtain the transmission flow for the any viscous liquid, and the aims that when the user transmits different kinds of viscous liquid, the flow can be accurately obtained, and the user operation portability is improved are achieved.

Description

technical field [0001] The invention relates to the field of fluid transmission control, in particular to a control method and device for viscous liquid transmission by a peristaltic pump and the peristaltic pump. Background technique [0002] When the peristaltic pump transmits liquid, different pump heads and different hoses are used to transmit liquids with different viscosities in the same time, and the corresponding relationship between the transmitted flow rate and the rotational speed is different. When users use it, they generally directly input the required target flow rate, requiring the peristaltic pump control system to calculate the required speed directly according to the user's needs. [0003] At present, the peristaltic pump drivers on the market all use pure water as the transmission medium. The test shows the relationship between the transmission flow rate and the rotational speed under different pump heads and hoses when transmitting pure water. Within a ...

AI Technical Summary

Problems solved by technology

[0004] However, this relationship is only valid for the transmission of liquids similar to pure water. If the liquid transmitted by the user has a viscosity, within a certain speed range, the relationship between the flow rate and the speed is not a simple linear relationship. After the user enters the flow rate, The rotational speed obtained by the drive control system according to this relationship cannot meet the needs of users

Moreover, in the field of fluid transmission, the fluid properties are different, and the relational expressions corresponding to the rotational speed are different. It is impossible and unrealistic to obtain the relational expressions of the flow rate and rotational speed of all fluids through experiments, and then build them into the driver.

[0005] In this way, for users who need to transmit viscous liquids, when using pure water as the transmission medium to obtain a linear relationship built-in drive, the input target flow rate cannot meet the target flow rate required by the customer, even if the drive with the speed calibration function is also online. Calibrated within range, some may never be calibrated to target flow

[0006] In the existing technology, customers cannot intuitively know the flow value of the peristaltic pump at any speed when using it, and the required flow can only be found in the non-stop testing and weighing.

Complicated operation, low efficiency, inconvenient to use

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