Filter with automatic dredging function

Abstract

The invention provides a filter with an automatic dredging function, and belongs to the technical field of separation devices. The filter with the automatic dredging function is mounted at an inlet ofa suction pipeline and comprises an impurity collection box. A suction pipeline filter screen, a one-way valve and a liquid inlet pipe are arranged in the impurity collection box. The suction pipeline filter screen is connected with the inlet of the suction pipeline and is used for intercepting impurities so as to prevent the impurities from entering the suction pipeline. An air inlet pipeline isarranged on the suction pipeline and is used for inflating the filter with the automatic dredging function. The liquid inlet pipe communicates with a pool tank and is used for guiding media and impurities in the pool tank into the impurity collection box. The one-way valve is arranged at an opening of the liquid inlet pipe. The impurity collection box is provided with a slag discharging pipe. Thefilter with the automatic dredging function is simple in structure, easy to operate and capable of automatically removing impurities blocking meshes of the suction pipeline filter screen and intercepting and regularly discharging big impurities, which cannot be directly discharged from a pump outlet, in the pool tank and has economical performance and a good using effect.

Description

technical field [0001] The invention relates to the technical field of separation devices, in particular to an automatic desilting filter. Background technique [0002] The wastewater generated in the production process of the petroleum and petrochemical industry is often mixed with a large amount of impurities. These impurities have complex components, even including bottles, rags, etc. These impurities will be adsorbed on the outside of the filter screen of the inlet pipe and block the holes on the filter screen, causing the pump to fail to absorb the medium. , the filter needs to be cleaned frequently. Small particles of impurities such as sand and gravel can enter the filter screen with the suction medium and be discharged together with the waste water, while larger impurities such as bottles and rags cannot enter the filter screen and are discharged to the outlet pipeline together with the suction medium. When the pump is stopped, there will be no suction at the inlet ...

AI Technical Summary

Problems solved by technology

[0002] The wastewater generated in the production process of the petroleum and petrochemical industry is often mixed with a large amount of impurities. These impurities have complex components, even including bottles, rags, etc. These impurities will be adsorbed on the outside of the filter screen of the inlet pipe and block the holes on the filter screen, causing the pump to fail to absorb the medium. , the filter needs to be cleaned frequently

Small particles of impurities such as sand and gravel can enter the filter screen with the suction medium and be discharged together with the waste water, while larger impurities such as bottles and rags cannot enter the filter screen and are discharged to the outlet pipeline together with the suction medium. When the pump is stopped, there will be no suction at the inlet of the inlet pipe, and large pieces of impurities will break away from the filter and return to the liquid storage tank. When the cleaned filter is put into the tank again for pumping water, it will be absorbed by the suction of the pump inlet to the filter again, causing Secondary clogging, and impurities in the pool accumulate more and more over time

Moreover, some tanks have special structures, and the pipelines are bent and non-straight in many places. The filter installed at the inlet of the pump suction pipeline cannot be lifted up to the liquid level for cleaning. It is an urgent problem to clean the filter directly below the surface and remove the large impurities accumulated in the tank with the liquid surface.

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