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Internal expansion sealing valve

A technology of internal expansion and valves, applied in valve details, diaphragm valves, valve devices, etc., can solve problems such as poor sealing and easy gaps, achieve good sealing effect and reduce water hammer effect

Pending Publication Date: 2022-04-19
刘曼
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing valves usually use sealing parts to move and contact with another sealing part to achieve closure when they play the role of opening and closing. However, such an operation method is prone to gaps, which leads to the problem of poor sealing.

Method used

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  • Internal expansion sealing valve
  • Internal expansion sealing valve

Examples

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Embodiment 1

[0023] Embodiment one, such as Figure 1-4 As shown, an internal expansion sealing valve includes a valve casing 1, a valve core 2 and a valve stem 3, the valve stem 3 is rotatably connected inside the valve casing 1, and the valve core 2 is fixedly installed inside the valve casing 1 and connected with the valve stem 3 Fitting, the valve housing 1 includes a flow channel 101, the two sides of the flow channel 101 are connected and penetrated with a connecting pipe 102, the bottom of the flow channel 101 is connected with and penetrated with a support sleeve 103, and the inner wall of the flow channel 101 is provided with a sealing groove 104, A seal 105 is fixedly installed on the top of the flow channel 101, a support frame 106 is fixedly installed at the left and right ends of the top center of the seal 105, and a threaded plate 107 is fixedly installed on the top of the support frame 106. The valve core 2 includes a rubber ball 201, a rubber ball 201 is socketed inside the...

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Abstract

The invention provides an internal expansion sealing valve, and relates to the field of valves. The internal expansion sealing valve comprises a valve shell, a valve element and a valve rod, the valve rod is rotationally connected to the interior of the valve shell, the valve element is fixedly installed in the valve shell and attached to the valve rod, the valve shell comprises a flow channel, the two sides of the flow channel are connected and penetrate through a connecting pipe, the lower portion of the flow channel is connected and penetrates through a supporting sleeve, and a sealing groove is formed in the inner wall of the flow channel. A sealing piece is fixedly installed at the top end of the flow channel. According to the internal expansion sealing valve, the rotating center shaft can drive the sleeve rod, the sealing block and the pressing plate to move upwards, the pressing plate moves upwards to extrude the buffering air bag so that the size of the rubber ball and the size of the sealing ring can be expanded, and meanwhile the sealing block moves upwards to block a through groove of the rubber ball; and the outer surfaces of the rubber ball and the sealing ring can be tightly attached to the inner wall of the valve shell, the rubber ball wraps the sealing block, and therefore the good sealing effect can be achieved.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to an internal expansion sealing valve. Background technique [0002] A valve is a mechanical device that controls the flow, flow direction, pressure, temperature, etc. of a flowing fluid medium, and a valve is a basic component in a piping system. Valve fittings are technically the same as pumps and are often discussed as a separate category. The valve can be operated manually or by handwheel, handle or pedal, and can also be controlled to change the pressure, temperature and flow of the fluid medium. [0003] When the existing valves are opened and closed, the sealing part is usually moved to contact with another sealing part to achieve sealing. However, such an operation method is likely to have gaps, which leads to the problem of poor sealing. Contents of the invention [0004] Aiming at the deficiencies of the prior art, the present invention provides an internal expansion s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K7/10F16K31/44
CPCF16K7/10F16K31/44
Inventor 刘曼
Owner 刘曼
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