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Pipeline evacuating valve

A technology for emptying valves and pipes, applied in the directions of lift valves, valve details, valve devices, etc., can solve the problems that pipes cannot be emptied, affect the next water supply, cannot overcome spring pressure, etc., and achieve pipe material saving and simple structure. Reasonable, good emptying effect

Inactive Publication Date: 2007-11-28
陈新贤
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the existing pipeline emptying valve is composed of a valve body with an inlet and an outlet, a spring-controlled float, a rubber plug, and an air intake pipe. The rubber plug blocks the air intake pipe to prevent water ingress. When negative pressure is generated in the pipeline, the air inlet hole is opened to complete the pipeline emptying. The disadvantage is that after the pipeline is emptied, there is a pressure difference between the inside and the outside of the pipeline, which will affect the next water supply; when the height of the emptying pipeline is less than 3 meters, the inside of the pipeline will The negative pressure generated cannot overcome the pressure of the spring, the intake pipe cannot be opened, and the pipe cannot be emptied; the height of the exhaust pipe is greater than 5 meters.

Method used

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Embodiment Construction

[0007] The pipeline emptying valve shown in the accompanying drawing is a valve body 10 with a water inlet 1 and a water outlet 2. The valve body 10 is provided with a two-way door 3 and a float 6. The left valve wall of the two-way door 3 is provided with a left single valve. To the door 5, the top valve wall is provided with an intake and exhaust pipe 9, and a lever 7 is also provided on the inner upper part of the valve body 10. The top of the float 6 is aligned with the movable end of the lever 7, and the fixed end of the lever 7 is hinged on the wall of the valve body 10. The sealing lining 8 that is contained on the lever 7 just in time covers the intake and exhaust pipe 9 ports when the lever 7 is jacked up, and opens the intake and exhaust pipe 9 ports when the lever 7 falls. Open a right one-way door 4 again on the valve wall on the right side of the two-way door 3 in the valve body 10. When the water is supplied, the water enters from the water inlet 1, the left one-...

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Abstract

The present invention discloses one kind of pipeline evacuating valve. The pipeline evacuating valve includes valve body with water inlet and water outlet, bi-directional door with single-directional door on the left wall and inlet pipe on the top wall and float inside the valve body, lever in the upper part with movable end aligning the top of the float and fixed end hinged to the valve wall, sealing sheet on the lever capable of covering the gas exhaust port when the lever is pushed upwards and opening the gas exhaust port when the lever is made to fall down. The present invention can realize reverse water supply and automatic evacuating pipeline after stopping water supply, and is suitable for water supply and gas supply pipeline.

Description

technical field [0001] The invention belongs to a pipeline on-off control device. Background technique [0002] At present, the existing pipeline emptying valve is composed of a valve body with an inlet and an outlet, a spring-controlled float, a rubber plug, and an air intake pipe. The rubber plug blocks the air intake pipe to prevent water ingress. When negative pressure is generated in the pipeline, the air intake hole is opened to complete the pipeline emptying. The disadvantage is that after the pipeline is emptied, there is a pressure difference between the inside and the outside of the pipeline, which will affect the next water supply; when the height of the emptying pipeline is less than 3 meters, the inside of the pipeline will The negative pressure generated cannot overcome the pressure of the spring, the intake pipe cannot be opened, and the pipe cannot be emptied; the height of the exhaust pipe is greater than 5 meters, and when water ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/00F16K31/20
Inventor 陈新贤
Owner 陈新贤
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