CN210484657U

CN210484657U - Dustproof gate valve

Info

Publication number: CN210484657U
Application number: CN201921469630.8U
Authority: CN
Inventors: 孙围华; 张磊; 靳毅; 张智明
Original assignee: Chuanbei Vacuum Technology Beijing Co ltd
Current assignee: Chuanbei Vacuum Technology Beijing Co ltd
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2020-05-08
Anticipated expiration: 2029-09-04

Abstract

The utility model provides a dustproof push-pull valve belongs to push-pull valve technical field, include: a housing having an inlet and an outlet for opening or closing, and a cavity for accommodating the driving body; the dustproof piece is connected to the driving body and is provided with a longitudinal dustproof surface which is used for sealing the opening of the cavity when the inlet and the outlet are opened; the utility model discloses a dustproof push-pull valve, dustproof and driving body linkage, when the push-pull valve is in the open mode, the driving body drives the cavity opening closure of dustproof with the casing. Because the cavity of casing is sealed by the dustproof piece, consequently the cavity is inside to be difficult to get into the dust when the evacuation to guaranteed push-pull valve's sealed effect and life.

Description

Dustproof gate valve

Technical Field

The utility model relates to a push-pull valve technical field, concretely relates to dustproof push-pull valve.

Background

In a vacuum system, a gate valve is used for controlling the connection or disconnection of a vacuum pipeline. When the system needs to be vacuumized, the gate valve is opened, and the vacuumizing device is started, so that the system can be vacuumized.

A prior art gate valve for a vacuum system comprises: the sealing plate is connected with the transmission mechanism through the driving body, and the sealing plate slides in the shell through the driving of the driving body so as to open or close the gate valve. When the gate valve is in a closed state, the sealing plate can seal the inlet and the outlet of the shell to keep the sealing of the vacuum system.

However, when the gate valve is in an open state, the cavity for accommodating the sealing plate in the shell of the gate valve is communicated with the extracted cavity. When the dust in the pumped system is pumped out, the dust can enter the cavity of the shell through the gate valve. Therefore, dust in the pumped system can enter the gate valve to pollute the gate valve, and the sealing effect and the service life of the gate valve can be influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the push-pull valve among the prior art when the open mode, the defect of entering the dust easily in the cavity of casing to a dustproof push-pull valve is provided.

In order to solve the technical problem, the utility model provides a dustproof push-pull valve, include:

a housing having an inlet and an outlet for opening or closing, and a cavity for accommodating the driving body;

and the dustproof piece is connected to the driving body and is provided with a longitudinal dustproof surface which is used for sealing the opening of the cavity when the inlet and the outlet are opened.

Preferably, the housing has an insertion groove for receiving the dust-proof member when the access opening is closed.

Preferably, the method further comprises the following steps:

and a sealing plate connected to the driving body and having a sealing surface for sealing the inlet/outlet when the inlet/outlet is sealed.

Preferably, the other surface of the sealing plate, which is away from the sealing surface, is connected to the driving body.

Preferably, the inlet and outlet of the housing are circular holes.

Preferably, the dust-proof part is a circular tube.

Preferably, the driving body is slidably disposed in the cavity of the housing, and the rear end of the driving body is used for being connected with the transmission mechanism.

Preferably, the dust-proof member is connected to a front end of the driving body through a bracket.

Preferably, the holder is connected to the driving body and the dust-proof member by welding, respectively.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a dustproof push-pull valve, dustproof and driving body linkage, when the push-pull valve is in the open mode, the driving body drives the cavity opening closure of dustproof with the casing. Because the cavity of casing is sealed by the dustproof piece, consequently the cavity is inside to be difficult to get into the dust when the evacuation to guaranteed push-pull valve's sealed effect and life.

2. The utility model provides a dustproof push-pull valve, insertion groove are used for holding the dustproof when closing the push-pull valve to avoid the influence of dustproof when importing and exporting to the closure, guarantee the sealed effect of importing and exporting to the push-pull valve.

3. The utility model provides a dustproof push-pull valve, the one side of closing plate is used for sealing the exit of casing, and the another side is used for being connected with the driving body, consequently through the relative relation of adjustment closing plate and driving body, can improve the sealed effect of closing plate to the exit of casing.

4. The utility model provides a dustproof push-pull valve, when exit on the casing is the circular port, the dustproof can adopt the pipe preparation, when opening during exit of casing, make the center of pipe with exit is concentric, can seal the cavity of casing promptly, can not influence opening of push-pull valve again.

5. The utility model provides a dustproof push-pull valve, the dustproof passes through the support and is connected with the driving body, can adjust the position of dustproof according to the specification of push-pull valve to guarantee when opening the push-pull valve, the cavity of the seal shell that the dustproof can be good.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front sectional view of a dustproof gate valve according to an embodiment of the present invention.

Fig. 2 is a top view of a dust-proof gate valve.

Fig. 3 is a front sectional view of the dust-proof gate valve shown in fig. 1 in an open state.

Description of reference numerals:

1. a housing; 2. a drive member; 3. a sealing plate; 4. a dust-proof member; 5. a cavity; 6. an inlet and an outlet; 7. a longitudinal dust-proof surface; 8. inserting the groove; 9. a sealing surface; 10. a transmission mechanism; 11. and (4) a bracket.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

The present embodiment provides a specific implementation manner of a dustproof gate valve, as shown in fig. 1 and fig. 2, including: the device comprises a shell 1, a driving piece 2, a sealing plate 3 and a dustproof piece 4.

The shell 1 is of a flat structure, a cavity 5 is arranged in the shell, and the cavity 5 is provided with an opening. The driving body is arranged in the cavity 5 in a sliding mode, the rear end of the driving body is connected with a transmission mechanism 10, and under the action of the transmission mechanism 10, the front end of the driving body can extend out of or retract into the cavity 5. Specifically, drive mechanism 10 adopts screw drive, is connected with at the front end of screw and cuts fork mechanism, and the screw can adopt electronic or manual mode to rotate, and through the rotation of screw, can drive and cut fork mechanism and stretch out and draw back to drive driving piece 2 that cuts fork mechanism front end and connect slides. In addition, as an alternative embodiment, the scissor mechanism can be replaced by a swing rod mechanism, or a lead screw is directly connected with the driving piece 2, or other conventional structures for driving a gate valve can also be adopted.

The sealing plate 3 is connected to a lower surface of a front end of the driving body, and a sealing surface 9 of the sealing plate 3 can seal the inlet/outlet 6 of the housing 1 when moving with the driving body.

The inlet and outlet 6 of the shell 1 is positioned at the front end of the opening of the cavity 5, the inlet and outlet 6 is a circular hole, a slot box is further arranged at the front end of the inlet and outlet 6, and an insertion slot 8 used for accommodating the dustproof piece 4 is formed in the slot box.

The dustproof piece 4 is a round pipe and is connected to the front end of the driving body through a support 11, and the inner side wall of the dustproof pipe forms a longitudinal dustproof surface 7 used for sealing the opening of the cavity 5.

During machining and manufacturing, the welding of the shell 1 is ensured not to deform, and the welding of the dustproof piece 4 is ensured to be accurate. The gap between the dust-proof member 4 and the inlet/outlet 6 of the housing 1 should be minimized, and the smaller the gap, the better the dust-proof effect.

Application method

As shown in fig. 1, when the dustproof gate valve is in an open state, the driving body is driven by the transmission mechanism 10 to move into the cavity 5 of the housing 1. The sealing plate 3 is also driven by the driving body and moves into the cavity 5 of the housing 1. The dust-proof member 4 is also driven by the driving body to move out of the insertion slot 8 and close the opening of the cavity 5 of the housing 1. Because the dustproof piece 4 is a round pipe, when the dustproof piece 4 is sealed at the opening of the cavity 5, the center of the round pipe is concentric with the inlet and outlet 6 of the shell 1, so that gas can pass through the round pipe conveniently.

As shown in fig. 3, when the dustproof gate valve is in a closed state, the driving body is driven by the transmission mechanism 10 to move out of the cavity 5 of the housing 1. The sealing plate 3 is also driven by the driving body, and simultaneously moves out of the cavity 5 of the shell 1 and is overlapped with the inlet and outlet 6 of the shell 1, so that the inlet and outlet 6 of the shell 1 is sealed. The dust-proof member 4 is also moved into the insertion groove 8 by the driving body so as not to interfere with the sealing of the inlet/outlet 6 of the housing 1 by the sealing plate 3.

As an alternative, when the inlet and outlet 6 of the housing 1 is a rectangular hole, the dust-proof member 4 may be a rectangular plate or a rectangular frame, and the vertical surface of the rectangular plate or the rectangular frame is used as the longitudinal dust-proof surface 7 to close the opening of the cavity 5 of the housing 1 when the gate valve is opened.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. Dustproof push-pull valve, its characterized in that includes:

a housing (1) having an access opening (6) for opening or closing and a cavity (5) for accommodating a drive body;

and the dustproof piece (4) is connected to the driving body and is provided with a longitudinal dustproof surface (7) used for sealing the opening of the cavity (5) when the inlet and the outlet (6) are opened.

2. A dust-tight gate valve according to claim 1, characterised in that the housing (1) has an insertion slot (8) therein for receiving the dust-tight member (4) when closing the access opening (6).

3. The dust-proof gate valve according to claim 1, further comprising:

and a sealing plate (3) connected to the driving body and having a sealing surface (9) for sealing the inlet/outlet (6) when the inlet/outlet (6) is sealed.

4. A dust-proof gate valve according to claim 3, characterised in that the other side of the sealing plate (3) remote from the sealing surface (9) is connected to the drive body.

5. A dust-proof gate valve according to claim 1, characterised in that the inlet and outlet (6) in the housing (1) are circular holes.

6. A dust-proof gate valve according to claim 5, characterised in that the dust-proof piece (4) is a round tube.

7. The dustproof gate valve according to claim 1, wherein the driving body is slidably arranged in the cavity (5) of the housing (1), and the rear end of the driving body is used for being connected with a transmission mechanism (10).

8. A dust-proof gate valve according to claim 7, characterised in that the dust-proof piece (4) is connected with the front end of the driving body by means of a support (11).

9. The dustproof gate valve according to claim 8, wherein the bracket (11) is connected with the driving body and the dustproof member (4) by welding, respectively.