Low pressure drop check valve

A check valve and low pressure drop technology, applied in the field of low pressure drop check valves, can solve the problems of high opening pressure, valve failure, large disc rotation radius, etc., and achieve the effect of good sealing performance and simple structure

Inactive Publication Date: 2017-10-24
SHANGHAI ZHONGHANG VALVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present technology provides an improved design that makes it easy for users to open or close valves more easily compared to previous designs. This results from its simplicity and tightness while still being effective at preventing leaks during use.

Problems solved by technology

This patented technical problem addressed by this patents relates to improving the design for conventional check valve designs such as swiveling types while also reducing their size without compromising its effectiveness due to instability caused by high pressures at certain points during operation.

Method used

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Embodiment

[0022] Such as Figure 1 to Figure 5 As shown, the embodiment of the present invention provides a low-pressure drop check valve, which includes a tubular valve body 1 and a valve disc 3. Flanges are respectively provided at the inlet and outlet of the valve body 1 to connect pipelines or other valves. The upper end of the flange is provided with a suspension ring 11, and one end of the upper surface of the valve disc 3 is provided with a lug 31, and the surrounding walls of the valve disc 3 are provided with a sealing groove, and a sealing ring 5 is provided in the sealing groove. In this embodiment , preferably, the lug 31 is arranged near the upper edge of the valve flap 3; the lug 31 is connected with the support rod 41 arranged on the upper wall of the inner cavity of the valve body 1 through the pin shaft 4 arranged horizontally, and the axis of the pin shaft 4 Vertical plane where the axis of the valve body 1 is located. In this embodiment, both ends of the pin shaft 4 pass

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PUM

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Abstract

The invention discloses a low pressure drop check valve. The low pressure drop check valve comprises a tubular valve body and a valve clack. A lug is arranged on one end of the upper surface of the valve clack; the lug is connected to a bracket rod arranged on the upper wall of an inner cavity of the valve body through a horizontally arranged pin roll; the axis of the pin roll is vertical to a vertical plane of the axis of the valve body; a valve clack seat is arranged in the inner cavity of the valve body; the outer edge of the valve clack seat is hermetically connected to the wall of the inner cavity of the valve body in a surrounding manner; a through hole is formed in the middle of the valve clack seat; the valve clack rotates around the pin roll to hermetically close or open the through hole; the plane of the valve clack seat inclines to the horizontal plane of the axis of the valve body and is vertical to the vertical plane of the axis of the valve body; and the valve clack seat inclines toward the inlet end of the valve body. Compared with the prior art, the low pressure drop check valve disclosed by the invention has the advantages of simple and compact structure and good sealing property, and can be quickly opened when the front and back pressure difference of the valve is smaller.

Description

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Claims

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Application Information

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Owner SHANGHAI ZHONGHANG VALVE CO LTD
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