Water pump control cabinet with multiple control modes

Abstract

The invention relates to a water pump control cabinet with multiple control modes. The water pump control cabinet comprises a cabinet body and a three-phase four-wire junction box, a major loop circuit and a control loop circuit, wherein the major loop circuit comprises a soft starter and a breaker, the power source end of the soft starter is connected to the three-phase four-wire junction box through the breaker, the output end of the soft starter is connected with a water pump motor, the control loop circuit comprises an air switch, an intermediate relay, a time relay as well as a one-stageswitch, a two-stage switch, a three-stage switch, a button switch and a liquid level control switch which are arranged on a cabinet door, the input end of the control loop circuit is connected on thethree-phase four-wire junction box through the air switch, the output end of the control loop circuit is connected with the control terminal of the soft starter, and by controlling the combined use ofthe one-stage switch, the two-stage switch, the three-stage switch, the button switch and the liquid level control switch, the water pump control cabinet has multiple long-distance and on-site, manual and automatic, and time and liquid level control functions, and can realize multi-mode start and stop control over a water pump.

Description

technical field [0001] The invention relates to the technical field of automation control equipment, in particular to automation control equipment applied to sewage collection and treatment systems, and in particular to a water pump control cabinet with multiple control modes. Background technique [0002] As the supporting equipment of the water pump, the water pump control cabinet is used to realize various functions such as water pump start-stop control and operation status indication. In addition, the control cabinet also has various protections such as overload, short circuit, and water leakage. It has been widely used in water supply, drainage, irrigation and Water pump control in various occasions such as sewage treatment. At present, the control methods of water pump control cabinets available on the market are mostly float ball, PLC control and manual button control, and the starting methods are mostly star-delta step-down start and auto-coupling step-down start. ...

AI Technical Summary

Problems solved by technology

The step-down startup cost is low, but the noise is high and the maintenance is heavy; the inverter startup current is small and the control accuracy is high, but the control is difficult and the cost is high; the soft start control is simple, easy to maintain, and the cost performance is high

[0004] The above water pump control methods have their own advantages and disadvantages, but the control function is single, especially in the sewage collection and treatment process. Special working conditions cannot be controlled only by a single automatic or manual control method. The conventional control method has been unable to meet the different functions of various occasions. Requirements, and most of the current sewage pumping stations have adopted an unattended management mode, so higher requirements are put forward for the pump control function

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