Online automatic backwashing device provided with water cooler

Abstract

The invention discloses an online automatic backwashing device provided with a water cooler. The device is connected with a PLC and comprises the water cooler, a backwashing device as well as a waterinlet pipe and a water return pipe which are connected with the water cooler, wherein a return water temperature sensor and a return water maintenance valve are arranged on the water return pipe, a first valve is arranged between the return water temperature sensor and the return water maintenance valve, an inlet water temperature sensor and an inlet water maintenance valve are arranged on the water inlet pipe, a second valve is arranged between the inlet water temperature sensor and the inlet water maintenance valve, the backwashing device is arranged between the water inlet pipe and the water return pipe, one end of the backwashing device is arranged on the water return pipe between the return water temperature sensor and the first valve, and the other end of the backwashing device is arranged on the water inlet pipe between the inlet water temperature sensor and the second valve. By the aid of the backwashing device, the manual maintenance workload can be reduced by 90% or above, meanwhile, the equipment reliability can be improved by about two orders of magnitude, and the effect of completely avoiding heavy production loss can be realized.

Description

technical field [0001] The application relates to the field of heat exchangers, in particular to an online automatic backwashing device for water coolers. Background technique [0002] Heat exchangers are widely used in industrial and agricultural production. Among them, medium and low pressure heat exchangers are more commonly used as coolers. Most coolers use industrial net circulating water as the cooling medium in industrial production. Because the industrial net circulating water contains a large amount of industrial salt of Ca and Mg ions and other chemical components added in the water purification treatment, there are also microorganisms multiplying and attaching to the inner surface of the heat exchanger. In addition, some small-diameter mechanical impurities are filtered through the water. The accumulation of these foreign objects in the heat exchanger channel will directly cause the decline of heat exchange capacity, which will cause equipment failure in light cas...

AI Technical Summary

Problems solved by technology

This method of regular manual maintenance is difficult to guarantee the reliability of the equipment, and the maintenance cost is also high.

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