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A swing check valve

A check valve, swing-type technology, applied in valve details, valve devices, control valves, etc., can solve the problems of fast closing speed, valve damage, large impact force on the sealing surface of the valve seat, etc., to reduce the closing speed, The effect of preventing damage to the valve and reducing the impact

Active Publication Date: 2020-09-08
FANGYUAN VALVE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: in the process of rotating and closing the check valve disc around the pin shaft, the closing speed is prone to be too fast, resulting in excessive impact force on the sealing surface of the valve disc and the sealing surface of the valve seat, which is easy to be damaged; at the same time, the check valve disc When closing quickly, it is easy to generate water hammer, which leads to the occurrence of harmful situations such as valve damage

Method used

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  • A swing check valve
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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] Such as Figure 1-8 Shown is a preferred embodiment of the present invention.

[0020] A swing check valve includes a valve body 1, a valve cover 2, a valve seat 3, a rotating shaft 6, a rocker 4, a valve disc 5, a connecting shaft 7, a buffer assembly and an adjustment assembly.

[0021] The valve body 1 is provided with an inlet flow channel 101 and an outlet flow channel 102 along the horizontal direction, and an inner cavity 103 communicating with the inlet flow channel 101 and the outlet flow channel 102 is provided in the valve body 1 along the vertical direction, and the valve cover 2 is fixed Installed on the upper end of the valve body 1 to close the upper opening of the inner cavity 103, the valve seat 3 is arranged at the position adjacent to the inlet channel 101 and the inner cavity 103, the rotating shaft 6 is rotatably a...

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Abstract

The invention relates to a swing check valve. The swing check valve comprises a valve body, a valve bonnet, a valve seat, a rotary shaft, a rocking bar, a valve clack, a connection shaft, a bufferingassembly and an adjustment assembly. The valve body is internally provided with an inlet flow channel, an outlet flow channel and an inner cavity. The valve bonnet is fixedly connected to the valve body. One end of the connection shaft is fixedly connected with the rotary shaft, and a spiral groove is formed in the other end of the connection shaft. The buffering assembly comprises a buffering block, a buffering cover, a buffering piston, a damping rod and a one-way valve plate. According to the swing check valve, the valve clack can be opened rapidly and closed slowly; thus impact can be lowered, water hammers are prevented from being generated, and the valve is prevented from being destroyed; and besides, the length of the damping rod extending into a piston cavity is adjusted through the adjustment assembly so that the opening size of a throttling groove can be adjusted, and then the closing speed of the valve clack can be adjusted.

Description

technical field [0001] The invention belongs to the technical field of pipeline valves, in particular to a swing check valve. Background technique [0002] The check valve is a commonly used valve in the pipeline system, which is mainly installed at the outlet of the pump, and it is used to connect and check the fluid medium in the pipeline system. The existing swing check valve mainly includes a valve body, a valve seat and a check disc. The pin shaft is installed in the inner cavity of the valve. When the medium enters the inner cavity of the valve from the inlet side of the valve, the medium pushes the check valve disc to rotate around the pin shaft to open. When no medium enters the valve inlet side, the check valve disc rotates around the pin shaft. closure. Its disadvantages are: in the process of rotating and closing the check valve disc around the pin shaft, the closing speed is prone to be too fast, resulting in excessive impact force on the sealing surface of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K15/03F16K15/18F16K47/02
CPCF16K15/03F16K15/18F16K47/023
Inventor 韩国昊
Owner FANGYUAN VALVE GROUP
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