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Combined exhaust valve group with filtrating and backwashing functions

A technology for exhaust valves and functions, applied in valve details, valve devices, valve operation/release devices, etc., can solve problems such as blocking the exhaust valve inlet, mixing debris, affecting the normal operation of the exhaust valve, etc. Small flow area and improved impact resistance

Active Publication Date: 2014-06-04
WUHAN DAYU VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, impurities will be mixed in the pipeline, which will block the inlet of the exhaust valve during the exhaust process, thereby affecting the normal operation of the exhaust valve.

Method used

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  • Combined exhaust valve group with filtrating and backwashing functions
  • Combined exhaust valve group with filtrating and backwashing functions
  • Combined exhaust valve group with filtrating and backwashing functions

Examples

Experimental program
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Effect test

Embodiment Construction

[0019] Such as figure 1 As shown, the compound exhaust valve group with filtering and backwashing function includes the main exhaust valve 1 and the inspection valve 3 connected to the inlet of the main exhaust valve 1. There is a The filter screen 4, the valve body at the inlet end of the maintenance valve 3 is provided with a reverse water inlet 5, the valve body at the outlet end of the maintenance valve 3 is provided with a sundry outlet 6, and the trace exhaust valve 2 and the opening 10 pass through a T-shaped joint 11 connection, one end of the T-shaped joint 11 is connected to the outlet of the reverse water inlet pipe 7, and a ball valve 12 is also provided between the reverse water inlet pipe 7 and the T-shaped joint 11, and the debris outlet 6 discharges the debris through the pipeline .

[0020] Such as figure 2 As shown, the outer diameter of the filter screen 4 is slightly larger than the inner diameter of the inlet flange 8 of the main exhaust valve body, and...

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Abstract

The invention discloses a combined exhaust valve group with filtrating and backwashing functions. The combined exhaust valve group comprises a main exhaust valve, wherein a service valve is in communication connection with the inlet of the main exhaust valve, a filter screen is arranged between the inlet of the main exhaust valve and the service valve, a reverse water inlet is formed in a valve body of the inlet end of the service valve, an impurity outlet is formed in the valve body of the outlet end of the service valve, and a trace exhaust valve and the reverse water inlet are communicated with a valve body cavity of the main exhaust valve at the rear end of the filter screen through a pipeline. The filter screen arranged between the inlet of the main exhaust valve and the outlet of the service valve is used for filtering impurities in a pipeline, water in the pipeline is reversely accessed to the interior of the main exhaust valve through the reverse water inlet of the service valve so as to backwash the filter screen, and the impurities are discharged from the impurity outlet through the pipeline, so that the blockage-proof function is realized.

Description

technical field [0001] The invention belongs to an exhaust valve in a pipeline, in particular to a composite exhaust valve. Background technique [0002] At present, the composite exhaust valve includes a valve body with a vertical channel, the valve body is connected to the valve cover, the valve body is provided with a bracket, the bracket is provided with a floating ball, and the flow channel hole wall of the valve cover is provided with a floating ball. The sealing pair between and the top of the valve body are connected with a micro exhaust valve. However, impurities will be mixed in the pipeline, which will block the inlet of the exhaust valve during the exhaust process, thus affecting the normal operation of the exhaust valve. Contents of the invention [0003] The object of the present invention is to provide a composite exhaust valve group with anti-clogging function and filter backwash function. [0004] The technical scheme adopted in the present invention is:...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/18F16K51/00
Inventor 李习洪何锐
Owner WUHAN DAYU VALVE
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