Pressure-equalizing two-way filter and its working method

Abstract

The invention discloses a pressure-equalizing two-way filter and its working method. The filter includes a connecting main pipe connecting branch pipes, a backwash drain pipe, a vent pipe, a filter column and a filter column base, and a connecting main pipe butterfly valve is arranged on the connecting main pipe; The upper end of the side of the column is connected to the upper section of the connecting main pipe through the upper connecting branch pipe; the top of the filter column is connected to the backwash drain pipe; the lower part of the filter column is connected to the base of the filter column; The upper connecting branch pipe butterfly valve is arranged in the middle; the lower connecting branch pipe butterfly valve is arranged in the lower connecting branch pipe; the filter column is filled with homogeneous filter material; the lower part of the filter column base is connected with the vent pipe. Apply the working method of pressure equalizing two-way filter, adopt automatic balance program during normal work, and regularly carry out water filling and replacement program to clean the impurities in the filter column. The invention enables the water pressure of the two water phases inside and outside to be dynamically balanced, but the water quality does not affect each other, and at the same time, there is no pressure difference between the inside and outside of the two water phases.

Description

technical field [0001] The invention belongs to the technical field of water supply treatment, and specifically refers to a pressure-equalizing bidirectional filter and a working method thereof. Background technique [0002] In February 2001, the underwater protection project of the original site of the Baiheliang inscription in Fuling decided to adopt the "pressure-free container" cultural relics protection plan for the in-situ underwater protection of cultural relics. The core of the principle of "pressureless container" is to build a net water pressure system, which is required to be able to automatically adapt to the fluctuation of the river, so that the inscription and its protection are always in a state of flat pressure inside and outside. At the same time, the operation of the system must make the water quality in the protection body clear and transparent to ensure the underwater viewing effect. The net water pressure system constructed through various demonstration...

AI Technical Summary

Problems solved by technology

At present, conventional filters are basically one-way flow, the filter material intercepts dirt, and when the head loss reaches the set value, backwashing is started

Conventional filter filtration must provide sufficient filtration head, which cannot realize the dynamic balance of internal and external water pressure, and cannot play the role of connecting components. At the same time, it cannot meet the two-way flow under the clean water pressure system and realize the automatic backwash function by using the system program

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