CN212745091U

CN212745091U - High vacuum gate valve

Info

Publication number: CN212745091U
Application number: CN202021221658.2U
Authority: CN
Inventors: 张青帅
Original assignee: Shanghai Changqiao Vacuum System Manufacturing Co ltd
Current assignee: Shanghai Changqiao Vacuum System Manufacturing Co ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-03-19
Anticipated expiration: 2030-06-28

Abstract

The utility model provides a high vacuum push-pull valve belongs to push-pull valve technical field. The high vacuum gate valve. The main part includes valve body, pipe joint and sealing washer. The valve component comprises a driving piece, a valve rod, a first driving block, a fixing rod, a second driving block, a fixing shaft, a valve plate and a connecting piece, wherein the connecting piece comprises a guide sleeve, a spring, a sliding block and a first connecting rod. The valve rod is driven to descend through the driving piece, the valve rod drives the valve plates on two sides to descend through the fixed shaft, when the bottoms of the valve plates are in contact with the bottom of the medium channel, the first driving block and the second driving block are inserted between the adjacent sliding blocks under the driving action of the valve rod, the springs are compressed, the first connecting rod pushes the two valve plates to two sides respectively under the driving action of the sliding blocks, and the valve plates are tightly abutted to the sealing rings at the end parts of the medium channel, so that the cutting operation of the medium channel is completed. The utility model discloses a valve plate separates medium channel and outside completely with the horizontal subsides of sealing washer, and the leakproofness is good.

Description

High vacuum gate valve

Technical Field

The utility model relates to a push-pull valve technical field particularly, relates to a high vacuum push-pull valve.

Background

The gate valve is an important valve body for isolating two adjacent spaces, and is widely applied to various vacuum equipment to isolate two areas with different vacuum degrees or isolate a vacuum environment and other gas environments. At present, the conventional gate valve controls the circulation and the cutoff of a medium by moving a valve plate up and down, the valve plate is not tightly attached to a cavity, and the sealing performance is poor.

SUMMERY OF THE UTILITY MODEL

In order to make up for above not enough, the utility model provides a high vacuum push-pull valve aims at improving the relatively poor problem of current push-pull valve sealing performance.

The utility model discloses a realize like this:

the utility model provides a high vacuum gate valve, including main part and valve member.

The main part includes valve body, pipe joint and sealing washer, two the pipe joint symmetry is fixed the valve body both sides, medium passageway and cavity have been seted up in the valve body, the cavity bottom with medium passageway top intercommunication, medium passageway both ends respectively with both sides the inner chamber intercommunication of pipe joint, two the sealing washer symmetry sets up both ends in the medium passageway.

The valve component comprises a driving piece, a valve rod, a first driving block, a fixed rod, a second driving block, a fixed shaft, a valve plate and a connecting piece, the driving piece is fixed on the top of the valve body, the top end of the valve rod is fixedly connected with the bottom end of a piston rod of the driving piece, the first driving block is fixed at the bottom end of the valve rod, the top of the second driving block is fixedly connected with the bottom of the first driving block through the fixed rod, the fixed rod penetrates through the fixed shaft, the middle parts of the adjacent sides of the two valve plates are respectively provided with a movable hole, the movable hole is in clearance fit with the end part of the fixed shaft, the connecting piece comprises a guide sleeve, a spring, a sliding block and a first connecting rod, the guide sleeve is symmetrically fixed on the fixed shaft, the sliding block is fixedly connected with the end part of the inner cavity of the guide sleeve through the spring, and one side of the sliding block is fixedly connected with the side wall of the valve plate through the first connecting rod.

In an embodiment of the present invention, the width of the cavity is smaller than a distance between two sealing rings in the medium passage.

The utility model discloses an in one embodiment, the main part still includes first retaining member, correspond on valve body and the pipe joint and seted up first screw hole, first retaining member threaded connection in the first screw hole.

The utility model discloses an in one embodiment, the main part still includes the gasket, the gasket sets up the valve body with between the pipe joint, the correspondence has been seted up on the gasket first screw hole.

In an embodiment of the present invention, the driving member includes a protection cover and a driving member body, the protection cover is fixed on the top of the valve body, and the driving member body is installed in the protection cover.

In an embodiment of the present invention, the second driving block includes a second driving block body and a buffer pad, and the buffer pad is fixed on the top of the second driving block body.

The utility model discloses an in one embodiment, first drive block with second drive block body bottom all sets up to the chamfer, sliding block top one side correspondence sets up to the chamfer.

The utility model discloses an in one embodiment, the valve component still includes the second retaining member, the valve rod top with the corresponding second screw hole that has seted up in the piston rod bottom of driving piece body, second retaining member threaded connection in the second screw hole.

The utility model discloses an in an embodiment, still include the direction subassembly, the direction subassembly includes slide rail and slider, the slide rail sets up the cavity lateral wall, the slider in slide on the slide rail, the slider with valve rod tip fixed connection.

In an embodiment of the present invention, the slider includes a slider body and a second connecting rod, and the slider body side portion passes through the second connecting rod and the valve rod end portion is fixedly connected.

The utility model has the advantages that: the high vacuum gate valve obtained by the design starts the driving piece when cutting off the medium, the piston rod of the driving piece extends out to drive the valve rod to descend, the valve rod drives the valve plates at the two sides to descend through the fixed shaft, when the valve plates are separated from the cavity and the bottoms of the valve plates are contacted with the bottom of the medium channel, the first driving block and the second driving block are inserted between the adjacent sliding blocks under the driving action of the valve rod, the spring is compressed, the first connecting rod pushes the two valve plates to two sides respectively under the driving action of the sliding blocks until the valve plates are abutted against the sealing ring at the end part of the medium channel, the cutting operation of the medium channel is completed, then the piston rod of the driving piece is retracted, the valve rod drives the first driving block and the second driving block to ascend, the spring restores to be original long, the first connecting rod drives the valve plate to reset, then the valve plate starts to move upwards to enter the cavity, and at the moment, the medium channel restores to circulate. The utility model discloses a valve plate separates medium channel and outside completely with the horizontal subsides of sealing washer, and the leakproofness is good.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of a high vacuum gate valve according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a main body according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a valve assembly according to an embodiment of the present invention;

fig. 4 is an enlarged schematic view of a portion a of fig. 3 according to an embodiment of the present invention;

fig. 5 is an enlarged schematic view of the position B of fig. 3 according to an embodiment of the present invention;

fig. 6 is a schematic view of a second perspective view of a guiding assembly according to an embodiment of the present invention.

In the figure: 100-a body; 110-a valve body; 120-a pipe joint; 130-a sealing ring; 140-a media channel; 150-a cavity; 160-a first locking member; 170-first threaded hole; 180-a resilient gasket; 200-a valve assembly; 210-a driver; 211-a shield; 212-a driver body; 220-a valve stem; 221-a second threaded hole; 230-a first drive block; 240-fixing rod; 250-a second drive block; 251-a second drive block body; 252-a cushion pad; 260-a fixed shaft; 270-a valve plate; 271-a movable hole; 280-a connector; 281-guide sleeve; 282-a spring; 283-slider; 284-a first link; 290-a second locking member; 300-a guide assembly; 310-a slide rail; 320-a slide block; 321-a slider body; 322-second link.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

Referring to fig. 1-6, the present invention provides a technical solution: a high vacuum gate valve comprises a main body 100 and a valve assembly 200, wherein the valve assembly 200 is mounted on the main body 100 and controls the medium in the main body 100 to circulate and cut off.

Referring to fig. 2 and 4, the main body 100 includes a valve body 110, pipe joints 120 and sealing rings 130, the two pipe joints 120 are symmetrically fixed on two sides of the valve body 110, the main body 100 further includes a first fastening member 160, the first fastening member 160 is a bolt, the valve body 110 and the pipe joints 120 are correspondingly provided with a first threaded hole 170, the first fastening member 160 is in threaded connection with the first threaded hole 170, the main body 100 further includes an elastic gasket 180, the elastic gasket 180 is disposed between the valve body 110 and the pipe joints 120, the elastic gasket 180 is correspondingly provided with the first threaded hole 170, the elastic gasket 180 is disposed to enhance the connection tightness between the pipe joints 120 and the valve body 110, the bottom of the valve body 110 is provided with a medium channel 140 and a cavity 150, the bottom of the cavity 150 is communicated with the top of the medium channel 140, two ends of the medium channel 140 are respectively communicated with inner cavities of the pipe joints 120 on two sides, the two sealing rings, the width of the cavity 150 is less than the distance between the two seal rings 130 in the media passage 140.

Referring to fig. 3-5, the valve assembly 200 includes a driving member 210, a valve rod 220, a first driving block 230, a fixing rod 240, a second driving block 250, a fixing shaft 260, a valve plate 270, and a connecting member 280, the driving member 210 is fixed on the top of the valve body 110, the driving member 210 includes a shield 211 and a driving member body 212, the driving member body 212 is a linear cylinder, the shield 211 is fixed on the top of the valve body 110, the driving member body 212 is installed in the shield 211, the shield 211 protects the driving member body 212, the top end of the valve rod 220 is fixedly connected to the bottom end of the piston rod of the driving member 210, the valve assembly 200 further includes a second locking member 290, the top end of the valve rod 220 and the bottom end of the piston rod of the driving member body 212 are correspondingly provided with a second threaded hole 221, the second locking member 290 is threadedly connected to the second threaded hole, the top of the second driving block 250 is fixedly connected with the bottom of the first driving block 230 through a fixing rod 240, the bottoms of the first driving block 230 and the second driving block body 251 are both provided with chamfers, the second driving block 250 comprises a second driving block body 251 and a buffer pad 252, the buffer pad 252 is a rubber pad, the buffer pad 252 is fixed at the top of the second driving block body 251, the buffer pad 252 can play a role in buffering when the second driving block body 251 drives the fixing shaft 260 to ascend, the fixing rod 240 penetrates through the fixing shaft 260, the middle parts of the adjacent sides of the two valve plates 270 are both provided with movable holes 271, and the movable holes 271 are in clearance fit with the end parts of the fixing shaft 260.

It should be specifically noted that the connecting member 280 includes a guide sleeve 281, a spring 282, a sliding block 283 and a first connecting rod 284, the guide sleeve 281 is symmetrically fixed on the fixed shaft 260, the sliding block 283 is fixedly connected with the end of the inner cavity of the guide sleeve 281 through the spring 282, one side of the top of the sliding block 283 is correspondingly provided with a chamfer to facilitate the insertion of the first driving block 230 and the second driving block body 251, one side of the sliding block 283 is fixedly connected with the side wall of the valve plate 270 through the first connecting rod 284, the piston rod of the driving member body 212 extends out to drive the valve rod 220 to descend, the valve rod 220 drives the valve plates 270 on both sides to descend through the fixed shaft 260, when the valve plates 270 are separated from the cavity 150 and the bottoms of the valve plates 270 are contacted with the bottom of the medium channel 140, the first driving block 230 and the second driving block body 251 are inserted between the adjacent sliding blocks 283 under the driving action of, the valve plate 270 abuts against the sealing ring 130 at the end of the medium channel 140, so as to complete the cutting operation of the medium channel 140, then the piston rod of the driving member body 212 is retracted, the valve rod 220 drives the first driving block 230 and the second driving block body 251 to ascend, the spring 282 recovers the original length, the first connecting rod 284 drives the valve plate 270 to reset, then the valve plate 270 starts to move upwards to enter the cavity 150, and at this time, the medium channel 140 recovers the circulation.

Referring to fig. 6, the high vacuum gate valve further includes a guide assembly 300, the guide assembly 300 includes a slide rail 310 and a slider 320, the slide rail 310 is disposed on a side wall of the cavity 150, the slider 320 slides on the slide rail 310, the slider 320 is fixedly connected with an end of the valve rod 220, the slider 320 includes a slider body 321 and a second connecting rod 322, a side portion of the slider body 321 is fixedly connected with the end of the valve rod 220 through the second connecting rod 322, when the valve rod 220 moves up and down, the slider body 321 slides on the slide rail 310, and the stability of the valve rod 220 during movement is enhanced.

Specifically, the working principle of the high-vacuum gate valve is as follows: when cutting media, the driving element body 212 is started, the piston rod of the driving element body 212 extends out to drive the valve rod 220 to descend, the valve rod 220 drives the valve plates 270 on two sides to descend through the fixed shaft 260, when the valve plates 270 are separated from the cavity 150 and the bottoms of the valve plates 270 are contacted with the bottoms of the media channels 140, the first driving block 230 and the second driving block body 251 are inserted between the adjacent sliding blocks 283 under the driving action of the valve rod 220, the spring 282 is compressed, the first connecting rod 284 pushes the two valve plates 270 to two sides respectively under the driving action of the sliding blocks 283 until the valve plates 270 are abutted against the sealing rings 130 at the end parts of the media channels 140, the cutting operation on the media channels 140 is completed, then the piston rod of the driving element body 212 is retracted, the valve rod 220 drives the first driving block 230 and the second driving block body 251 to ascend, the spring 282 returns to the original length, the first connecting rod 284 drives the valve plates 270 to, at which time the media channel 140 resumes flow communication.

It should be noted that the specific model specification of the driving element body 212 needs to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art in the field, so detailed description is omitted.

The power supply to the driver body 212 and its principles will be apparent to those skilled in the art and will not be described in detail herein.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high vacuum gate valve is characterized by comprising

The main body (100) comprises a valve body (110), pipeline joints (120) and sealing rings (130), the two pipeline joints (120) are symmetrically fixed on two sides of the valve body (110), a medium channel (140) and a cavity (150) are formed in the valve body (110), the bottom of the cavity (150) is communicated with the top of the medium channel (140), two ends of the medium channel (140) are respectively communicated with inner cavities of the pipeline joints (120) on two sides, and the two sealing rings (130) are symmetrically arranged at two ends in the medium channel (140);

the valve assembly (200), the valve assembly (200) includes a driving part (210), a valve rod (220), a first driving block (230), a fixing rod (240), a second driving block (250), a fixing shaft (260), a valve plate (270) and a connecting part (280), the driving part (210) is fixed on the top of the valve body (110), the top end of the valve rod (220) is fixedly connected with the bottom end of the piston rod of the driving part (210), the first driving block (230) is fixed on the bottom end of the valve rod (220), the top of the second driving block (250) is fixedly connected with the bottom of the first driving block (230) through the fixing rod (240), the fixing rod (240) penetrates through the fixing shaft (260), two movable holes (271) are respectively formed in the middle parts of adjacent sides of the valve plates (270), and the movable holes (271) are in clearance fit with the end part of the fixing shaft (260), the connecting piece (280) comprises guide sleeves (281), springs (282), a sliding block (283) and a first connecting rod (284), wherein the guide sleeves (281) are symmetrically fixed on the fixed shaft (260), the sliding block (283) is fixedly connected with the end part of the inner cavity of the guide sleeves (281) through the springs (282), and one side of the sliding block (283) is fixedly connected with the side wall of the valve plate (270) through the first connecting rod (284).

2. A high-vacuum gate valve according to claim 1, characterized in that the width of said cavity (150) is smaller than the distance between two said sealing rings (130) in said medium channel (140).

3. A high vacuum gate valve according to claim 1, wherein said main body (100) further comprises a first retaining member (160), said valve body (110) and said pipe fitting (120) having a corresponding first threaded bore (170), said first retaining member (160) being threadably engaged within said first threaded bore (170).

4. A high vacuum gate valve according to claim 3, wherein said body (100) further comprises an elastic gasket (180), said elastic gasket (180) is disposed between said valve body (110) and said pipe joint (120), said elastic gasket (180) is correspondingly provided with said first threaded hole (170).

5. A high vacuum gate valve according to claim 1, wherein the driver (210) comprises a shield (211) and a driver body (212), the shield (211) being fixed on top of the valve body (110), the driver body (212) being mounted within the shield (211).

6. A high vacuum gate valve according to claim 1, wherein the second drive block (250) comprises a second drive block body (251) and a buffer pad (252), the buffer pad (252) being fixed on top of the second drive block body (251).

7. A high vacuum gate valve as claimed in claim 6, wherein the bottom of said first driving block (230) and the bottom of said second driving block body (251) are chamfered, and the top side of said sliding block (283) is correspondingly chamfered.

8. The high-vacuum gate valve as claimed in claim 5, wherein the valve assembly (200) further comprises a second locking member (290), the top end of the valve stem (220) and the bottom end of the piston rod of the driving member body (212) are correspondingly provided with a second threaded hole (221), and the second locking member (290) is screwed in the second threaded hole (221).

9. A high vacuum gate valve according to claim 1, further comprising a guide assembly (300), wherein the guide assembly (300) comprises a slide rail (310) and a slider (320), the slide rail (310) is disposed on a side wall of the cavity (150), the slider (320) slides on the slide rail (310), and the slider (320) is fixedly connected with an end of the valve rod (220).

10. A high vacuum gate valve according to claim 9, characterized in that the slider (320) comprises a slider body (321) and a second link (322), the side of the slider body (321) is fixedly connected with the end of the valve stem (220) through the second link (322).