Diversion damper slowly-closed check valve

A check valve and damping technology, applied in the field of water supply pipeline control valves, can solve the problems that the valve cannot be closed slowly, affect the normal operation of the valve, and the valve flow coefficient is small, so as to reduce parts, facilitate installation and layout, and prolong service life Effect

Active Publication Date: 2015-01-14
WUHAN DAYU VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing check valves used in large water delivery pipelines over 1 meter include butterfly check valves. The disc of this structure requires external power when closing, and the structural layout is relatively troublesome. In addition, when the disc rotates to close, Vibration will be generated due to the action of water flow, which will affect the normal operation of the valve
There is an existing quick-closing check valve, the valve disc moves in a fixed guide body, and the movement guide structure of the valve disc is inconvenient to install. At the same time, the flow coefficient of the valve is small, and the water loss is relatively large during the process of water passing through the valve through the pipeline; at the same time , the valve with the above structure cannot realize slow closing

Method used

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  • Diversion damper slowly-closed check valve
  • Diversion damper slowly-closed check valve
  • Diversion damper slowly-closed check valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 , 2 As shown, the valve body includes a front valve body 101 and a rear valve body 102, and the front valve body 101 and the rear valve body 102 are connected and sealed by a flange structure 103 provided on the front valve body 101 and the rear valve body 102. The front valve body 101 includes a front end facility medium (water) entering the duct section 104, and the rear valve body 102 includes a rear end facility medium (water) out of the duct section 105. The rear end of the front valve body 101 and the front section of the rear valve body 102 constitute a mounting cavity 106 of the valve body structure.

[0038] Check direction of the valve body In this embodiment, the medium (water) of the valve body 101 enters the end of the duct section 104 with a valve seat 107.

[0039] The installation cavity 106 is provided with a supporting and moving structure. In this embodiment, according to the pipe diameter and the load, the upper and lower parts of the ins...

Embodiment 2

[0052] Such as image 3 As shown, the valve body is provided with a mounting hole 501 of the valve body structure, and the mounting hole is connected and sealed with the valve cover 502; between the guide surface of the fluid flow check valve core and the inner wall of the valve body housing and the inner wall of the valve cover Form a diversion channel. The shape formed by the inner wall of the valve body shell and the inner wall of the valve cover at the diversion channel corresponds to the shape of the guide fluid check valve core, and is a part of an ellipsoid shape; or is formed by a plurality of arc segments tangent to each other The shape of a rotating body; or a rotating body formed by a plurality of arc segments tangent, the end of the rotating body is tangent to a cylinder or a truncated cone; or a spherical cap shape; or a spherical cap and A shape formed by the tangent of a cylinder or truncated cone. The structure of the valve body is the same as that in Embodime...

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Abstract

The invention discloses a diversion damper slowly-closed check valve which comprises a valve body provided with medium circulation tubes at two ends. A valve seat is arranged in the valve body. The diversion damper slowly-closed check valve further comprises a diversion body check valve core arranged in the valve body, a support moving structure for supporting the diversion body check valve core, a sliding block connected with the diversion body check valve core, a sliding rod connected with the sliding block, and a non-return driving structure with one end contacted with the sliding block and used for driving the sliding block to perform non-return movement. The other end of the sliding rod is connected with a moving damper structure. The diversion body check valve core in the diversion damper slowly-closed check valve adopts a movable structure, namely the diversion effect and the sealing effect are played, the whole structure is convenient to install, the support moving structure is used for supporting the diversion body check valve core, the supporting is stable, and operation is stable. The moving damper structure can produce resistance to movement of the sliding block and the diversion body check valve core, quick movement is avoided, and dismantle of a pipeline water hammer and protection of a pipeline and a water pump are achieved through slow closing.

Description

Technical field [0001] The invention belongs to a water supply pipeline control valve, and particularly relates to a pipeline check valve in a large pipeline. Background technique [0002] Existing check valves used in large-scale water pipelines of more than 1 meter include butterfly check valves. The valve flap of this structure requires external power when it is closed, and the structural arrangement is more troublesome. In addition, when the valve flap is closed by rotation, Due to the effect of water flow, vibration will be generated, which will affect the normal operation of the valve. There is a quick-closing check valve in which the disc moves in a fixed guiding fluid, and the movement guiding structure of the disc is inconvenient to install. At the same time, the flow coefficient of the valve is small, and the water loss is relatively large when water passes through the valve through the pipeline; , The valve with the above structure cannot realize slow closing. Summar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K15/02F16K47/00
Inventor 李习洪何锐
Owner WUHAN DAYU VALVE
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