Control method of flocculant delivery pump

Abstract

The invention discloses a control method of a flocculant delivery pump, which comprises the following steps: S1) setting two or more dissolving tanks; S2) configuring a flocculant, configuring the flocculant for each dissolving tank, and assigning a value; S3) when a pump needs a flocculant, judging the conditions of Y1 and Y2 values and the liquid level state L of an electrode liquid level transmitter by a circuit controller; S4) when the liquid level state L of the electrode liquid level transmitter is equal to 0, closing the medicine valve A by the circuit controller and stopping delivery of a delivery pump; S5) when the low liquid level state LL1 of a dissolving tank A is equal to 1, judging the condition of a Y2 value and enabling Y1 to be equal to 0 by the circuit controller; and S6) when Y2 is equal to 1, opening a medicine valve B to convey a flocculant. The invention provides a control method for gradually conveying two or more flocculants in a flocculation dissolving box by one conveying pump according to requirements. An electrode liquid level transmitter is arranged on an output pipeline of a delivery pump, the delivery state of the delivery pump can be detected through the electrode liquid level transmitter, and the control method is good in operation effect and high in automation degree and has a delivery pump fault protection function.

Description

technical field [0001] The invention relates to flocculant delivery, in particular to a control method of a flocculant delivery pump. Background technique [0002] At present, the flocculant dissolving tanks of sewage purification equipment are all set in 3 tanks. The dissolving process of flocculant powder requires continuous water inflow to complete the dissolving of flocculants. In addition, the volume is too large, which is not suitable for use in mobile sewage purification vehicles. Flocculant dissolving operation. The start and stop of the flocculant delivery pump are controlled by the high and low liquid levels installed in the tank, but the high and low liquid levels in the dissolution tank cannot detect the delivery status of the delivery pump. The flocculant polyacrylamide often agglomerates to form "fish eyes" during the preparation process and cannot be dissolved. The insoluble solids can easily block the inlet of the delivery pump, resulting in whether the deli...

AI Technical Summary

Problems solved by technology

[0002] At present, the flocculant dissolving tanks of sewage purification equipment are all set in 3 tanks. The dissolving process of flocculant powder requires continuous water inflow to complete the dissolving of flocculants. In addition, the volume is too large, so it is not suitable for use in mobile sewage purification vehicles. Flocculant dissolving operation

The start and stop of the flocculant delivery pump are controlled by the high and low liquid levels installed in the tank, while the high and low liquid levels in the dissolution tank cannot detect the delivery status of the delivery pump

The flocculant polyacrylamide often agglomerates to form "fish eyes" during the preparation process and cannot be dissolved. The fast solids that cannot be dissolved can easily block the inlet of the delivery pump, resulting in whether the delivery pump can enter the liquid and run idling, causing the pump to dry up. The sealing structure of the pump body is damaged due to wear and tear, which makes the delivery pump unusable

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