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Composite multistage seal gate valve operation method

An operation method and composite technology, applied in the direction of valve operation/release device, sliding valve, valve details, etc., can solve the problems of poor sealing reliability and achieve the effect of improving sealing performance and speed

Inactive Publication Date: 2019-01-25
CHANGXING BEST MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an operation method for a composite multi-stage sealed gate valve, which drives the drive assembly to move during the closing process of the valve plate through the drive assembly, so that the valve plate and the valve seat are in contact with the valve seat for medium While the flow is closed, the sealing component is sealed and matched with the medium flow channel to realize the high-performance multi-stage sealing of the valve plate; to solve the technical problem of poor sealing reliability in the prior art

Method used

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  • Composite multistage seal gate valve operation method
  • Composite multistage seal gate valve operation method
  • Composite multistage seal gate valve operation method

Examples

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Embodiment 1

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0035] According to the manual attached figure 1 Describe the operation method of a composite multi-stage sealed gate valve in this embodiment, including the following steps:

[0036] (a) In the pre-use stage, the two ends of the medium channel 11 on the gate valve 1 are respectively sealed and connected to the medium inlet pipe and the medium output pipe for medium transmission;

[0037] (b) During the valve plate descending stage, the driving assembly 51 on the rotating lifting mechanism 5 drives the valve plate 4 to move down...

Embodiment 2

[0044] Wherein, the same or corresponding parts as those in the first embodiment adopt the reference numerals corresponding to the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below; the difference between the second embodiment and the first embodiment is that Step (c) also includes a pressurization stage, when the sealing disc 4122 extends into the medium flow channel 11, the pressurization assembly 413 on the valve plate 4 pressurizes the fluid in a movement opposite to the direction of fluid flow. The sealing plate 4132 on the pressurization assembly 413 is moved by the reverse pressure of the fluid, and after the fluid enters the moving space 414 through the drainage hole 4131 on the pressurization assembly 413, the sealing plate 4132 resets and closes the drainage hole 4131.

[0045] Wherein, the sealing plate 4132 is compressed by the fluid and at the same time the compression member 4133 on the pressurization ...

Embodiment 3

[0048] According to the manual attached Figures 2 to 9 A compound type multi-stage hermetic gate valve in this embodiment is described.

[0049] Such as Figures 2 to 6 As shown, a composite multi-stage sealing gate valve includes a valve body 1, a valve seat 2 disposed in the valve body 1, and a cover body 3 installed on the valve body 1, and also includes:

[0050] Valve plate 4, described valve plate 4 is installed in the valve seat 2 that is symmetrical structure, and it comprises main plate 41 and the auxiliary plate 42 that is connected with this main plate 41, and described main plate 41 comprises plate body 411, is arranged on this plate body 411 and the sealing assembly 412 arranged in cooperation with the medium flow channel 11 on the valve body 1 and the pressurization assembly 413 provided in intermittent communication with the medium flow channel 11, the sealing assembly 412 and the sub-plate 42 A moving space 414 for the movement of the booster assembly 413 is...

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Abstract

The invention relates to the technical field of valves, in particular to a composite multistage seal gate valve operation method which includes the steps: hermetically connecting a gate valve with a medium input pipe and a medium output pipe at a pre-use stage, a valve plate falling stage, a sealing stage and a gate valve opening stage; driving a valve plate to move downwards and close by a rotarydriving component, and realizing double seal of the gate valve by sealing contact of a sealing ring and the inner wall of a medium flow channel; reversely turning a lifting mechanism when the gate valve is opened, pushing a sealing disk to extend into the medium flow channel and then return by a boss in upward movement of the valve plate, and driving the valve plate to move to the upper portion of a valve seat by the lifting mechanism to open the gate valve; driving the valve plate by a driving component to drive a transmission component to move in the closing process, performing seal fit ona sealing component and the medium flow channel in contact of the valve plate and the valve seat for stopping medium flow, and realizing high-performance multistage seal of the valve plate. The technical problem of poor seal reliability in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to an operating method of a composite multi-stage sealed gate valve. Background technique [0002] The gate valve realizes the blocking of the fluid through the sealing cooperation between the valve plate moving up and down and the valve seat, but in the actual use process, because the fluid is blocked by the valve plate, the pressure of the fluid acting on the valve plate is relatively large, so that the The valve plate is pressed on the valve seat, and it is pressed on the valve seat on one side, resulting in a large deformation of the seal on the pressure-bearing side, and a small deformation of the seal on the other side. The small amount of deformation leads to poor sealing effect between it and the valve plate, especially for the internal pressure of the fluid, the fluid is deformed by the ballast on the seal, and then enters between the seal and the valve plate, resulting in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/53F16K3/02F16K27/04
CPCF16K31/53F16K3/0227F16K3/0281F16K27/04
Inventor 梁世添沈卫强梁世森俞国锋
Owner CHANGXING BEST MASCH CO LTD
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