High-speed filter backwashing energy-saving device and use method thereof

Abstract

The invention discloses a high-speed filter backwashing energy-saving device and a use method thereof. The device comprises a high-speed filter, a backwashing water inlet start-stop control system anda backwashing water outlet main electric valve; wherein the backwashing water inlet start-stop control system comprises a multifunctional water pump control valve, a backwashing water inlet main electric valve, a backwashing water inlet main manual valve and an electromagnetic flowmeter; two ends of the multifunctional water pump control valve are respectively communicated with the high-level water tank water supply pump and the water inlet end of the backwashing water inlet main electric valve; the water outlet end of the backwashing water inlet main electric valve is communicated with the water inlet end of the backwashing water inlet main manual valve, the water outlet end of the backwashing water inlet main manual valve is communicated with the water inlet end of the electromagnetic flowmeter, the water outlet end of the electromagnetic flowmeter is communicated with the backwashing water inlet end of the high-speed filter, and two ends of the backwashing water outlet main electric valve are respectively communicated with the backwashing water outlet end of the high-speed filter and the sewage tank. The problems that a backwashing pump wastes electric energy and is short in service life due to frequent starting and stopping are solved, and meanwhile the problems of sealing leakage of a backwashing water outlet electric butterfly valve and waste caused by frequent replacement of electric valve spare parts are solved.

Description

technical field [0001] The present application relates to the technical field of high-speed filter cleaning, in particular to a high-speed filter backwash energy-saving device and a method for using the same. Background technique [0002] In the production of wide and thick plates, the high-speed filter is used to purify the sewage containing scale and oily water produced by rolling steel. The high-speed filter has the characteristics of high filtration speed and large flow. The sewage is filtered through the sewage, and the filtered water is discharged out of the high-speed filter through the electric valve of the filtered water. The parallel use of multiple high-speed filters can improve the treatment efficiency of sewage. However, in the actual use process, when the sewage is filtered for a certain period of time, due to the continuous accumulation of impurities on the filter layer and the surface of the filter head, water resistance is generated, the water flow rate is r...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned high-speed filter uses the PLC control module to control the opening and closing of the electric butterfly valve and the start and stop of the backwash pump to realize backwashing. However, after the backwashing device is used for a period of time, the sealing performance of the backwashing electric butterfly valve will become poor, and small flow leakage will occur. , the use of multiple high-speed filters in parallel will increase the leakage, resulting in a long flow of water in the backwash main pipe, and the clean water used for backwashing will flow to the sewage tank, resulting in waste of water resources. waste of spare parts

In addition, the commonly used high-speed filter backwash must be equipped with a backwash pump to provide water for backwashing the high-speed filter. The design flow rate of the backwash pump is usually greater than the flow rate used for backwashing the high-speed filter, and the power consumption of the backwash pump will be reduced. Cause waste; in addition, when backwashing the high-speed filter, the backwash pump needs to be frequently started and stopped, which will shorten the service life of the backwash pump

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