Flow control method of a sewage pump

Abstract

The present invention relates to a flow control method of a sewage pump, comprising the following steps: (1) monitoring the power and flow of the sewage pump; (2) comparing the monitored power and flow of the sewage pump with a predetermined power and flow; ( 3) When the power of the monitored sewage pump is greater than or equal to the predetermined power, the speed of the sewage pump is controlled to increase, and the size of the water passage is increased to stabilize the drainage volume; (4) When the speed of the controlled sewage pump is increased, the flow rate of the monitored sewage pump remains unchanged. When the flow rate is less than the predetermined flow rate, control the vertical movement of the cutting blade along the water inlet cutting port to cut off the debris on the trash rack; (5) Monitor whether the power of the sewage pump is reduced to the normal operating value, if not, control the driving mechanism to move again. Cutting action; yes, complete the cutting, continue to monitor the power and flow of the sewage pump. The invention solves the problem that the portable large-flow drainage pump is easily blocked when used in a sewage environment, ensures the drainage flow and improves the drainage efficiency.

Description

technical field [0001] The invention belongs to the technical field of water pump control, and in particular relates to a flow control method of a sewage pump. Background technique [0002] With the development of society, the amount of sewage and wastewater produced will also increase. The sewage will inevitably contain some larger domestic waste, such as: gloves, towels, cloth, shopping bags, etc., and even mixed with Objects such as some branches and weeds. However, when ordinary sewage pumps transport these sewage, the pump body will often be blocked, and debris will entangle the sewage pump inlet, causing the pump to fail to work. This is not only difficult to clean, but also affects the progress of drainage and the drainage flow. and efficiency. [0003] Especially for large-flow drainage pumps for flood fighting and emergency rescue, their general speed is relatively high, and compared with traditional drainage pumps, the particle passing capacity is lower. It is ea...

AI Technical Summary

Problems solved by technology

However, when ordinary sewage pumps transport these sewage, the pump body will often be blocked, and debris will entangle the sewage pump inlet, causing the pump to fail to work. This is not only difficult to clean, but also affects the progress of drainage and the drainage flow. and efficiency

[0003] Especially for large-flow drainage pumps for flood fighting and emergency rescue, their general speed is relatively high, and compared with traditional drainage pumps, the particle passing capacity is lower. It is easy to block when used in a sewage environment. It needs to be lifted up frequently and manually cleaned before it can continue to work normally. , seriously increasing the amount of manual labor and affecting efficiency

Images