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Micro-central-cavity rigid sealing abrasion-resistant brake valve

A hard-sealed, gate valve technology, applied in the field of micro-cavity hard-sealed wear-resistant gate valves, can solve problems such as valve loss of function, external leakage, and seal damage, and achieve the effect of eliminating pressure fluctuations

Inactive Publication Date: 2017-05-03
SUFA TECH IND CNNC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Once the particles enter the middle cavity, the accumulation and coking in the middle cavity will cause the valve to lose its function; some particles remaining on the sealing surface will damage the seal; at the same time, the particles will enter the packing and damage the seal, which will cause leakage

Method used

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  • Micro-central-cavity rigid sealing abrasion-resistant brake valve
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  • Micro-central-cavity rigid sealing abrasion-resistant brake valve

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Embodiment Construction

[0016] as attached Figure 1~3 As shown, a micro-cavity hard-sealed wear-resistant gate valve includes a valve body 1, a cavity channel for circulating liquid or gas is arranged on the valve body 1, and a valve seat 3 is arranged on the valve body 1, and the valve seat 3 is Two pieces, arranged symmetrically, a gate plate 6 is set between the two valve seats 3, the position of the gate plate 6 is just enough to realize the opening and closing control of the cavity channel, and a valve cover 9 is set on the valve body 1, and the valve cover 9 is connected with the valve body. Body 1 is fixedly connected by bolts.

[0017] An installation process groove 12 is opened on the valve body 1, and the valve seat 3 and the gate plate 6 are both arranged in the installation process groove 12.

[0018] Both ends of the gate 6 are arc-shaped, and the installation process groove 12 on the valve body 1 matching the gate 6 is also arc-shaped.

[0019] In order to ensure sealing, the upper a...

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Abstract

The invention belongs to valves and particularly relates to a micro-central-cavity rigid sealing abrasion-resistant brake valve. The micro-central-cavity rigid sealing abrasion-resistant brake valve comprises a valve body. A cavity channel used for circulating liquid or gas is formed in the valve body. Two valve seats are arranged on the valve body and arranged symmetrically. A gate plate is arranged between the two valve seats, and opening-closing control over the cavity channel can be achieved exactly through the position of the gate plate. A valve deck is arranged on the valve body and fixedly connected with the valve body through a bolt. The micro-central-cavity rigid sealing abrasion-resistant brake valve has the following advantages that through the micro-central-cavity structure, the situation that particles are sucked into a central cavity due to pressure fluctuation and temperature change in the operation process is basically eliminated; the gate plate adopts a structure with two ends extending outwards, and the central cavity sucking-in and squeezing-out effects is avoided when the valve is opened and closed; and the valve seats adopt continuous sealing, and the particles are limited from entering the central cavity in the operation process.

Description

technical field [0001] The invention belongs to valves, in particular to a wear-resistant gate valve with a micro-medium cavity hard seal. Background technique [0002] With the development of industrialization, there are more and more solid-containing working conditions, such as polysilicon, coal gas, and coal oil, and the requirements for valves are getting higher and higher. The gate valve has the advantages of good economy under the condition of large diameter. The gate valve of this structure is a solution for high-solid working conditions accompanied by high temperature and high pressure. [0003] If the ordinary gate valve is used in the working condition containing solid particles, the particles will enter the middle cavity along with the medium when the valve is working; even for gate valves with diversion holes, due to changes in temperature and pressure during the working process, the medium in the middle cavity will expand and cool down. , the particles are also...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K3/30F16K3/02F16K3/314
CPCF16K3/30F16K3/0281F16K3/314
Inventor 陈刚杨雪华龙云飞徐新华干瑞斌
Owner SUFA TECH IND CNNC
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