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Double-seal axial-flow type check valve

A double-sealed, axial-flow technology, applied in valve details, control valves, valve devices, etc., can solve the problems of valve internal leakage, valve leakage, large valve opening pressure loss, etc., to ensure reliability, low pressure loss, Good sealing performance

Pending Publication Date: 2017-12-29
上海伟伦阀门集团江苏有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The general axial flow check valve is a split structure, the valve has leakage points, the installation requirements of the valve are limited, the opening pressure loss of the valve is large, and the valve disc cannot be seated accurately, so the valve has certain internal leakage, and Noise is generated during opening and closing

Method used

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  • Double-seal axial-flow type check valve

Examples

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Embodiment Construction

[0020] Such as Figure 1 to Figure 3 As shown, the double seal axial flow check valve of the present invention includes a valve body 1, a valve disc assembly 2 and a valve stem 3, the valve disc assembly 2 includes a valve disc 21, and a valve is used between the valve stem 3 and the valve disc 21. The flap cover 22 is connected, the valve flap 21 is embedded with a sealing ring 23, the sealing ring 23 is a reinforced polytetrafluoroethylene sealing ring, the valve flap 21 is provided with an O-shaped sealing ring 4, and the surface of the valve flap 21 is also provided with a fan-shaped flow channel The notches 5 and fan-shaped flow channel notches 5 are evenly distributed along the circumference of the valve disc 21, and the fan-shaped flow channel notches 5 are processed on the surface of the valve disc 21 to ensure the flow rate.

[0021] The valve body 1 is also provided with a channel 6 for the flow of the medium and a flow guide assembly, the flow guide assembly include...

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PUM

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Abstract

The invention discloses a double-seal axial-flow type check valve and relates to the technical field of check valves. The double-seal axial-flow type check valve comprises a valve body, a valve flap assembly and a valve rod. The valve flap assembly comprises a valve flap, the valve rod is connected with the valve flap through a valve flap cover, a sealing ring is embedded into the valve flap and is a reinforced poly tetra fluoro ethylene sealing ring, an O-shaped sealing ring is arranged on the valve flap, and the surface of the valve flap is further provided with fan-shaped runner notches which are uniformly distributed along the circumference of the valve flap. The axial-flow type check valve adopts a double-seal structure, so that the excellent sealing performance of the valve is ensured, and a shock absorption and silencing effect is achieved.

Description

technical field [0001] The invention relates to the technical field of check valves, in particular to a double-seal axial flow check valve. Background technique [0002] The general axial flow check valve is a split structure, the valve has a leakage point, the installation requirements of the valve are limited, the opening pressure loss of the valve is large, and the valve disc cannot be seated accurately, so the valve has certain internal leakage, and There will be noise during opening and closing. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a double seal axial flow check valve. [0004] The present invention adopts following technical scheme: [0005] The double seal axial flow check valve includes a valve body, a disc assembly and a valve stem, the disc assembly includes a disc, the valve stem and the disc are connected by a disc cover, and the disc Embedded with a sealing ring, the sealing ring i...

Claims

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Application Information

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IPC IPC(8): F16K15/06F16K27/02
CPCF16K15/063F16K27/0209
Inventor 赵波李成鑫季明生
Owner 上海伟伦阀门集团江苏有限公司
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