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Self-sealing gate valve structure

A self-sealing and gate valve technology, applied in the field of self-sealing gate valve structure, can solve the problems of poor sealing effect, large operating torque and small operating torque of the gate valve, and achieve the effect of small operating torque, long service life and good sealing effect.

Active Publication Date: 2015-11-18
OUQIU VALVE CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a self-sealing gate valve structure with good sealing effect, small operating torque and anti-seizing in order to solve the problems of poor sealing effect, large operating torque and easy jamming during use of the gate valve in the prior art.

Method used

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0021] like figure 1 A self-sealing gate valve structure is shown, including a valve body 1, a valve cavity 2, and a valve stem 3. The left and right ends of the valve body are respectively provided with a left channel 4 and a right channel 5 communicating with the valve cavity, and the valve stem extends into In the valve chamber, the upper end of the valve chamber 2 is provided with a sealing seat 6, and the upper end of the valve body 1 is provided with two guide rods 7, and a stop rod 8 is arranged between the guide rods, and the upper end of the valve rod passes through the seal seat 6 and the stop rod. 8. There is a graphite packing 22 between the sealing seat and the valve stem, the valve stem 3 is fixedly connected with the stop rod 8, and the stop rod and the guide rod are slidingly connected, and the position of the gate valve can be intuit...

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Abstract

The invention relates to the technical field of valves, and discloses a self-sealing gate valve structure. The self-sealing gate valve structure comprises a valve body, a valve cavity and a valve rod, wherein a left valve seat and a right valve seat which are coaxial are arranged at the inner ends of a left passage and a right passage respectively; a gate seat fixed with the valve rod is arranged between the left valve seat and the right valve seat; a left gate and a right gate are respectively arranged on the two sides of the gate seat; the inner end of the left gate extends to form an outer connecting sleeve; the inner end of the right gate extends to form an inner connecting sleeve; the inner connecting sleeve and the outer connecting sleeve are connected in a sliding manner; the outer connecting sleeve is in clearance fit with a connection hole in the gate seat; and a closed liquid storage cavity is formed between the inner connecting sleeve and the outer connecting sleeve and filled with oil. The self-sealing gate valve structure has the benefits of being good in sealing effect, small in operation torque and anti-locking.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a self-sealing gate valve structure. Background technique [0002] The gate valve is one of the commonly used cut-off valves, mainly used to connect or cut off the medium in the pipeline. The gate valve is suitable for a wide range of pressure, temperature and caliber. , Large diameter pipes. According to the shape of the spool, the gate valve is divided into wedge-shaped single gate, wedge-shaped double gate, parallel single gate and parallel double gate. Various wedge gate valves are widely used in China. The gate is a wedge-shaped structure with a simple structure. , The cost is low, but the sealing effect mainly depends on the extrusion of the gate and the valve seat, which has inherent problems such as large operating torque, easy jamming of moving parts, short life, and inconvenient use. For example: Chinese patent authorization announcement number: CN204267772U, the autho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K3/16F16K31/122
CPCF16K3/16F16K31/122
Inventor 江健
Owner OUQIU VALVE CO LTD
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