Sealing plate for vacuum swing valve

Abstract

The utility model discloses a sealing plate for a vacuum swing valve, which relates to the technical field of swing valves and comprises a valve body, a driving motor and a sealing plate body. A through hole for gas to pass through is formed in the valve body; the driving motor drives the sealing plate body to swing in the valve body so as to open or close the through hole; a counter bore is formed in the top face of the sealing plate body, the inner side wall of the counter bore is communicated with the outer side wall of the sealing plate body through a notch, and the notch can guarantee stable change of the gas through-flow area in a through hole in the opening process of the sealing plate body. The opening is formed in the top face of the sealing plate body, the inner side wall of the counter bore communicates with the outer side wall of the sealing plate body through the opening, and when the sealing plate body gradually opens the through hole, fluid at an inlet of the through hole can flow to an outlet of the through hole through the opening. In order to ensure that the through-flow area of fluid in the through hole is stably changed in the initial opening process of the sealing plate body, the through-flow area of the fluid flowing through the valve body is linearly changed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a swing valve technical field, specifically, a kind of sealing plate for vacuum swing valve. BACKGROUND

[0002] Vacuum valve refers to the vacuum system in, used to change the direction of fluid, adjust the size of fluid flow, cut off or connect the vacuum system element of pipeline. Among them, vacuum pendulum valve as a kind of vacuum valve, due to its structure has the advantages of small space occupation, fast valve closing speed, it occupies an important position in the field of vacuum valve.

[0003] Pendulum valve is composed of valve body, valve disc and transmission device, it is a kind of valve commonly used to control fluid medium, valve body is the main part of pendulum valve, usually square or circular, valve disc is the key component of valve, it is connected with transmission device, so as to realize the opening and closing of valve. The action principle of pendulum valve is based on the motion law of pendulum. When the valve is closed, a sealed closed state is formed between the valve disc and the valve body, which prevents fluid from passing through, when the valve disc rotates to the side, the valve is opened, and the fluid can pass through smoothly. At present, pendulum valve has been applied in various industrial fields, such as petroleum chemical industry, electric power, metallurgy, etc.

[0004] However, the valve disc of some existing pendulum valves will cause the flow area of the fluid flowing through the valve to be nonlinear in the initial opening period.

[0005] Therefore, a sealing plate for vacuum swing valve is proposed. UTILITY MODEL CONTENTS

[0006] The utility model aims at overcoming the defects of prior art, providing a sealing plate for vacuum swing valve.

[0007] The utility model aims at overcoming the defects of prior art, providing a sealing plate for vacuum swing valve.

[0008] A sealing plate for vacuum swing valve, including the valve body of hollow structure, drive motor being arranged on the valve body, and sealing plate body being located in the valve body and being in transmission connection with the output end of the drive motor;The valve body is provided with through hole for gas passing, and the through hole has inlet and outlet arranged oppositely;The drive motor drives the sealing plate body to swing in the valve body, so as to open or close the through hole;The sealing plate body has top surface and bottom surface arranged oppositely, and outer side wall, and the top surface is close to the outlet of the through hole;The top surface of the sealing plate body is provided with counterbore, and the inner side wall of the counterbore and the outer side wall of the sealing plate body are communicated through aperture, and the aperture can ensure the smooth change of the gas flow area in the through hole during the opening process of the sealing plate body;When the sealing plate body gradually opens the through hole, the gas at the inlet of the through hole can flow to the outlet of the through hole through the aperture.

[0009] Further, in the utility model, the gap includes linear channel and taper channel which are communicated with each other, one end of the linear channel far from the taper channel is communicated with the counterbore, the small end of the taper channel is communicated with the linear channel, and the large end of the taper channel is communicated with the outer side wall of the sealing plate body.

[0010] Further, in the utility model, the distance L between the two side walls of the linear channel is 9.96-10.96mm.

[0011] Further, in the utility model, the angle A between the two side walls of the taper channel is 130°-160°.

[0012] Further, in the utility model, the diameter of the counterbore is the same as that of the through hole, and when the sealing plate body completely blocks the through hole, the central axis of the counterbore is collinear with that of the through hole.

[0013] Further, in the utility model, the valve body is provided with a machine shell, and the driving motor is arranged in the machine shell.

[0014] The utility model has the advantages of:

[0015] The utility model provides a sealing plate for vacuum swing valve, through setting up a gap in the top surface of the sealing plate body, the inner side wall of the counterbore and the outer side wall of the sealing plate body are communicated through the gap, when the sealing plate body gradually opens the through hole, the fluid in the through hole inlet can flow to the through hole outlet through the gap. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is the structure schematic view of the vacuum swing valve of the utility model embodiment;

[0017] Fig. 2 It is the structure schematic view of the sealing plate body of the utility model embodiment;

[0018] Fig. 3 It is the structure schematic view of the sealing plate body of the utility model embodiment.

[0019] In the drawing: 101-valve body;201-sealing plate body;301-through hole;401-counterbore;501-gap;5011-linear channel;5012-taper channel;601-machine shell. DETAILED DESCRIPTION

[0020] The technical solutions of the present application will be described clearly and completely below in connection with the embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative effort are within the scope of the present application.

[0021] Please refer to Figs. 1-3 The present application provides a technical solution:

[0022] A sealing plate for a vacuum swing valve, comprising a valve body 101 in a hollow structure, a casing 601 mounted on the valve body 101, a drive motor (not shown in the figure) mounted in the casing 601, and a sealing plate body 201 located in the valve body 101 and in transmission connection with the output end of the drive motor; the valve body 101 is provided with a through hole 301 for gas passing through, and the through hole 301 has an inlet and an outlet arranged oppositely; the drive motor drives the sealing plate body 201 to swing in the valve body 101 to open or close the through hole 301. The sealing plate body 201 has a top surface and a bottom surface arranged oppositely, and an outer side wall, and the top surface is arranged close to the outlet of the through hole 301. The top surface of the sealing plate body 201 is provided with a counterbore 401, and the diameter of the counterbore 401 is the same as that of the through hole 301. When the sealing plate body 201 completely blocks the through hole 301, the central axis of the counterbore 401 is collinear with the central axis of the through hole 301.

[0023] When the sealing plate body 201 gradually opens the through hole 301, the fluid at the inlet of the through hole 301 can flow to the outlet of the through hole 301 through the aperture 501. In order to ensure that the flow area of the fluid in the through hole 301 changes smoothly during the initial opening of the sealing plate body 201, so as to ensure that the flow area of the fluid flowing through the valve body 101 changes linearly, an aperture 501 is specially provided on the top surface of the sealing plate body 201, and the inner side wall of the counterbore 401 and the outer side wall of the sealing plate body 201 are communicated through the aperture 501. If the flow area of the fluid flowing through the valve body 101 does not change linearly, the chamber pressure will be unstable, and when the pressure change exceeds 1 / 1000 of the command pressure, the equipment will be shut down.

[0024] Specifically, referring to Fig. 2 Or Fig. 3 In this embodiment, the aperture 501 comprises a straight channel 5011 and a tapered channel 5012 which are communicated with each other, one end of the straight channel 5011 away from the tapered channel 5012 is communicated with the counterbore 401, and one end of the tapered channel 5012 away from the straight channel 5011 is communicated with the outer side wall of the sealing plate body 201.

[0025] In this embodiment, the distance L between the two side walls of the straight channel 5011 is 9.96-10.96mm, preferably 10.46mm.

[0026] In this embodiment, the angle A between the two side walls of the tapered channel 5012 is 130°-160°, preferably 160°.

[0027] The above description is only preferred embodiments of the present application, and it should be understood that the present application is not limited to the forms disclosed herein, and should not be considered as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concepts described herein by the above teachings or related art or knowledge. Any modification and change made by those skilled in the art without departing from the spirit and scope of the present application shall be within the scope of protection of the appended claims of the present application.

Claims

1. A seal plate for a vacuum swing valve, characterized by: The valve body (101) is hollow, a driving motor is arranged on the valve body (101), and a sealing plate body (201) is arranged in the valve body (101) and is in transmission connection with the output end of the driving motor; a through hole (301) for passing gas is arranged on the valve body (101), the through hole (301) has an inlet and an outlet arranged oppositely; the driving motor drives the sealing plate body (201) to swing in the valve body (101) to open or close the through hole (301); the sealing plate body (201) has a top surface and a bottom surface arranged oppositely, and an outer side wall, and the top surface is arranged close to the outlet of the through hole (301); the top surface of the sealing plate body (201) is provided with a counterbore (401), the inner side wall of the counterbore (401) and the outer side wall of the sealing plate body (201) are communicated through an aperture (501), the aperture (501) can ensure the smooth change of the gas flow area in the through hole (301) during the opening process of the sealing plate body (201); when the sealing plate body (201) gradually opens the through hole (301), the gas at the inlet of the through hole (301) can flow to the outlet of the through hole (301) through the aperture (501).

2. The seal plate for a vacuum swing valve according to claim 1, characterized in that: The aperture (501) comprises a straight channel (5011) and a tapered channel (5012) which are communicated with each other, one end of the straight channel (5011) away from the tapered channel (5012) is communicated with the counterbore (401); the small-diameter end of the tapered channel (5012) is communicated with the straight channel (5011), and the large-diameter end of the tapered channel (5012) is communicated with the outer side wall of the sealing plate body (201).

3. The seal plate for a vacuum swing valve according to claim 2, characterized in that: The distance L between the two side walls of the straight channel (5011) is 9.96-10.96 mm.

4. The seal plate for a vacuum swing valve according to claim 2, wherein: The angle A between the two side walls of the tapered channel (5012) is 130°-160°.

5. The seal plate for a vacuum swing valve according to claim 2, wherein: The diameter of the counterbore (401) is the same as the diameter of the through hole (301); when the sealing plate body (201) completely blocks the through hole (301), the central axis of the counterbore (401) is collinear with the central axis of the through hole (301).

6. The seal plate for a vacuum swing valve according to claim 1, wherein: A machine shell (601) is arranged on the valve body (101), and the driving motor is arranged in the machine shell (601).

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