A split filter sewage treatment device

Abstract

The invention provides a split-flow filtration sewage treatment device, and belongs to the field of oil field sewage treatment. According to the split-flow filtration sewage treatment device, a waterinlet pipe is arranged at the lower part of a shell, a water outlet pipe is arranged on the side face of the shell, a filter screen is arranged in the shell, the upper face and the lower face of the cylindrical filter screen are fixedly connected with the shell, a piston is arranged in the filter screen, the lower portion of the center of the piston is connected with a motor shaft, and the motor shaft penetrates through the lower portion of the shell in a sealed mode to be connected with a linear motor arranged on the lower portion of the shell; in the upper portion of the shell, the inner side of the filter screen is connected with a magnetic valve and a pressure gauge through pipelines; a plurality of through holes are formed in the piston surface. The invention has the following beneficial effects: the piston in clearance fit with the filter screen is arranged to push interceptors attached to the filter screen; water flows out through the electromagnetic valve pipeline, the water discharge amount is small, cleaning is thorough, filtering is uninterrupted in the cleaning process, normal production is not affected, the filtering effect is not reduced, backwashing water and accessory equipment thereof are not needed, shutdown disassembling cleaning process of common filters is avoided the production efficiency is improved, water resources are saved, and the production cost is reduced.

Description

Technical field: [0001] The invention relates to the field of oil field sewage treatment, in particular to a split filter sewage treatment device. Background technique: [0002] The filter is a key equipment often used in various processes in the oil field. After working for a period of time, the filter screen of the mechanical filter usually used in sewage treatment will decrease the filtering effect and the flow rate will become smaller. It is necessary to open the filter for cleaning, or design a The backwashing pipeline uses a backwashing pump to backwash the filter screen, resulting in the stop of normal production and wasting a lot of water. The backwashing effect is completely flushed by the water flow. Under the same pressure, the water flow will flow through the place where the blockage is not serious However, the place with severe blockage is still not cleaned. Invention content: [0003] In order to solve the above problems, the present invention provides a spl...

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Problems solved by technology

[0002] The filter is a key equipment often used in various processes in the oil field. After working for a period of time, the filter screen of the mechanical filter usually used in sewage treatment will decrease the filtering effect and the flow rate will become smaller. It is necessary to open the filter for cleaning, or design a The backwashing pipeline uses a backwashing pump to backwash the filter screen, resulting in the stop of normal production and wasting a lot of water. The backwashing effect is completely flushed by the water flow. Under the same pressure, the water flow will flow through the place where the blockage is not serious However, the place with severe blockage is still not clean

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