Backflow-prevention and smell-resistance hydraulic self-control valve device and application method

Abstract

The invention discloses a backflow-prevention and smell-resistance hydraulic self-control valve device and an application method. The backflow-prevention and smell-resistance hydraulic self-control valve device comprises an air shaft body, a valve body and a communicating pipe; a pipe joint is formed in the side wall of the communicating pipe, and is connected with the valve body; the valve body takes the shape of a three-way pipe; a horizontal pipe is arranged on the side wall of the vertical pipe; the vertical pipe communicates with the horizontal pipe; a cross ring plate is arranged in the vertical pipe, and is lower than the horizontal pipe; the middle part of the cross ring plate takes the shape of a cross; the lower part of the cross ring plate is connected with a limiting pipe; the upper part of the cross ring plate is connected with a disc; the outer side of the disc is connected with a sealing ring; the bottom of the sealing ring is connected with the cross ring plate; the middle part of the disc is connected with a connecting rod through a nut; the connecting rod penetrates through the cross ring plate and the limiting pipe; the bottom of the connecting rod is connected with a floating box; a semicircular pipe is arranged in the horizontal pipe; a gravity door is arranged on the outer edge of the semicircular pipe; the top of the vertical pipe is connected with a plug cover; a pipe orifice at the bottom of the vertical pipe is opened.

Description

technical field [0001] The invention relates to the technical field of environmental control and connected drainage of a tunnel air shaft group, in particular to an anti-backflow and odor hydraulic automatic control valve device and a use method thereof. Background technique [0002] In terms of comprehensive drainage of the fluid system, such as the discharge of sewage and gas sewage, the current drainage system only has water-sealed wells, and water-sealed wells may sometimes be closed without water, resulting in the risk of gas sewage spreading along the pipeline. In the intensive setting of subway tunnel air well management, the existing air well group sump is equipped with an independent drainage pump system such as figure 1 , 2 As shown, air shaft groups are set at both ends of the station, and each group is respectively equipped with a fresh air shaft A, a row of air shafts B, the first piston air shaft C1, and the second piston air shaft C2. In the area, each win...

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Problems solved by technology

Therefore, the investment in construction facilities is large, the area is large, the electrical equipment of the drainage system is large, the maintenance management is complicated, and the maintenance cost is high.

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