Vacuum switching valve

Abstract

The utility model discloses a vacuum switching valve which comprises a support, a shell, an air inlet, an air outlet and a switching assembly. The shell is arranged on the support, the air inlet and the air outlet are formed in the shell, and the switching assembly is used for promoting the air inlet and the air outlet to be communicated or disconnected. An air inlet cavity and an air outlet cavity are formed in the shell; the air inlet cavity is communicated with the air inlet; the air outlet cavity is communicated with the air outlet; the switching assembly comprises a plugging cover and a driving assembly used for driving the plugging cover to do linear motion. An opening matched with the plugging cover is formed in the position, corresponding to the plugging cover, of the shell, one side of the opening is communicated with the air inlet cavity, and the other side of the opening is communicated with the air outlet cavity; a groove is formed in the plugging cover; when the blocking cover blocks the opening, the groove in the blocking cover forms a communicating channel used for communicating the air inlet cavity with the air outlet cavity. The vacuum switching valve has the advantages of being simple in structure and low in machining cost.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of negative pressure equipment, and particularly relates to a vacuum switching valve. BACKGROUND

[0002] The existing vacuum switching valve is provided with an air inlet and an air outlet, and the air inlet and the air outlet are respectively arranged on two opposite end faces of the vacuum switching valve; wherein, the air inlet is generally communicated with a working device, and the air outlet is communicated with a negative pressure device; the vacuum switching valve controls whether the air inlet and the air outlet are communicated through a control assembly arranged in the vacuum switching valve, so as to promote the working device communicated with the air inlet to switch between the working state and the non-working state.

[0003] However, the existing vacuum switching valve has a complex structure and high processing cost. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses in order to overcome the insufficient of prior art, provide a vacuum switching valve, the vacuum switching valve has simple structure, the advantages such as low processing cost.

[0005] The utility model discloses a technical scheme that solves the above technical problem:

[0006] A vacuum switching valve, comprising a support, a housing arranged on the support, an air inlet and an air outlet arranged on the housing, and a switching assembly for promoting the air inlet and the air outlet to be communicated or disconnected, wherein the housing is provided with an air inlet cavity and an air outlet cavity, wherein the air inlet cavity is communicated with the air inlet, and the air outlet cavity is communicated with the air outlet.

[0007] The switching assembly comprises a plugging cover and a driving assembly for driving the plugging cover to move linearly, wherein the housing is provided with an opening matched with the plugging cover at a position corresponding to the plugging cover, one side of the opening is communicated with the air inlet cavity, and the other side is communicated with the air outlet cavity; the plugging cover is provided with a groove; when the plugging cover is plugged at the opening, the groove in the plugging cover constitutes a communication channel for communicating the air inlet cavity and the air outlet cavity.

[0008] Preferably, the housing comprises a housing body, a front side cover plate arranged on the front side of the housing body, a rear side cover plate arranged on the rear side of the housing body, and a partition plate arranged on the inner side of the housing body.

[0009] Preferably, the air inlet and the air outlet are arranged on the front side cover plate.

[0010] Preferably, the opening is arranged on the rear side cover plate.

[0011] Preferably, the partition is arranged inside the housing body to divide the space inside the housing body into the air inlet cavity and the air outlet cavity.

[0012] Preferably, the housing body is made of aluminum profile structure.

[0013] Preferably, the driving assembly is a linear motor or a cylinder.

[0014] Preferably, the blocking cover is cylindrical, and the outer diameter of the blocking cover is greater than the inner diameter of the opening.

[0015] Preferably, an air inlet interface is arranged at the air inlet, and an air outlet interface is arranged at the air outlet.

[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0017] 1. The vacuum switching valve of the utility model opens or blocks the opening on the housing through the driving assembly to realize free switching between the working state and the non-working state; when it is needed to switch to the working state, the driving assembly drives the blocking cover to block at the opening, the air inlet cavity and the air outlet cavity on both sides of the housing are communicated through the groove on the blocking cover, under the negative pressure generated by the negative pressure equipment communicated with the air outlet, the gas enters the air inlet cavity from the air inlet, passes through the communication channel and enters the air outlet cavity, and finally is discharged from the air outlet; when it is needed to switch to the non-working state, the driving assembly drives the blocking cover to separate from the opening, so that the air inlet cavity and the air outlet cavity are disconnected, so that the gas in the air inlet cavity is not affected by the negative pressure in the air outlet cavity.

[0018] 2. The vacuum switching valve of the utility model has simple structure, low processing cost and good market. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view of the vacuum switching of the utility model.

[0020] Figure 2 It is a sectional view of the vacuum switching of the utility model.

[0021] Figures 3-4 It is a structure schematic view of two different views of the housing. DETAILED DESCRIPTION

[0022] The utility model will be described in further detail below in combination with the embodiments and the drawings, but the implementation mode of the utility model is not limited to this.

[0023] Reference Figures 1-4The utility model discloses a vacuum switch includes support 1, set up on the support 1 casing 4, set up on the casing 4 air inlet, air outlet and be used for prompting the switch assembly of air inlet and air outlet communication or disconnect, wherein, the casing 4 is provided with air inlet cavity 402 and air outlet cavity 401, the air inlet cavity 402 with air inlet communication, the air outlet cavity 401 with air outlet communication, the switch assembly includes the plugging cap 3 and is used for driving the plugging cap 3 linear motion drive assembly 2, wherein, the casing 4 is provided with the opening 7 of matching with the plugging cap 3 at the position corresponding with the plugging cap 3, one side of opening 7 communicates with air inlet cavity 402, and the other side communicates with air outlet cavity 401, the plugging cap 3 is provided with recess 301, when the plugging cap 3 is plugged in opening 7, the recess 301 in the plugging cap 3 constitutes the communication channel for communicating air inlet cavity 402 and air outlet cavity 401.

[0024] Through the above setting, when needing to switch to the working state, the drive assembly 2 drives the plugging cap 3 to make linear motion, so that the plugging cap 3 is plugged in the opening 7, and the air inlet cavity 402 and the air outlet cavity 401 on both sides of the casing 4 are communicated through the recess 301 on the plugging cap 3, under the negative pressure generated by the negative pressure equipment in communication with the air outlet, gas enters the air inlet cavity 402 from the air inlet, and finally is discharged from the air outlet after passing through the communication channel;

[0025] When needing to switch to the non-working state, the drive assembly 2 drives the plugging cap 3 to make reverse motion, so that the plugging cap 3 is separated from the opening 7, so that the air inlet cavity 402 and the air outlet cavity 401 are disconnected, so that the gas in the air inlet cavity 402 is not affected by the negative pressure in the air outlet cavity 401.

[0026] In the above process, in order to ensure the working efficiency, the negative pressure equipment needs to be maintained in the starting state, if the negative pressure equipment adopts the working mode of "starting when working, stopping in non-working state", because the fan in the negative pressure equipment needs to reach the predetermined speed before providing sufficient negative pressure, therefore, the mode of "maintaining starting of the negative pressure equipment" in the utility model can improve the working efficiency.

[0027] Referring to Figures 1-4The shell 4 comprises a shell body 403, a front side cover plate 404 arranged on the front side of the shell body 403, a rear side cover plate 405 arranged on the rear side of the shell body 403, and a partition plate 406 arranged inside the shell body 403, wherein the air inlet and the air outlet are arranged on the front side cover plate 404; the opening 7 is arranged on the rear side cover plate 405; and the partition plate 406 is arranged inside the shell body 403 for dividing the space inside the shell body 403 into the air inlet cavity 402 and the air outlet cavity 401.

[0028] In the embodiment, the shell body 403 adopts an aluminum profile structure, so that the shell body 403 in the embodiment can be directly machined from an aluminum profile, thereby saving cost.

[0029] Referring to Figures 1-4 The driving assembly 2 is a linear motor or a cylinder.

[0030] Referring to Figures 1-4 The plugging cover 3 is in a cylindrical shape, and the outer diameter of the plugging cover 3 is greater than the inner diameter of the opening 7.

[0031] Referring to Figures 1-4 An air inlet interface 6 is arranged at the air inlet and connected with a working device; and an air outlet interface 5 is arranged at the air outlet and connected with a negative pressure device.

[0032] The above is a preferred embodiment of the utility model, but the embodiment of the utility model is not limited by the above content, and any change, modification, replacement, combination, simplification made without departing from the spirit and principle of the utility model should be an equivalent replacement mode, which is all included in the protection scope of the utility model.

Claims

1. A vacuum switching valve, characterized by The air inlet and the air outlet are arranged on the front cover plate. The opening is arranged on the rear cover plate.

2. The vacuum switch valve according to claim 1, characterized in that The partition plate is arranged on the inner side of the shell body and is used to divide the space in the shell body into the air inlet cavity and the air outlet cavity.

3. The vacuum switch valve according to claim 2, characterized in that The shell body is made of aluminum profile structure.

4. The vacuum switch valve according to claim 2, characterized in that The driving assembly is a linear motor or a cylinder.

5. The vacuum switch valve according to claim 2, characterized in that The blocking cover is cylindrical, and the outer diameter of the blocking cover is greater than the inner diameter of the opening.

6. The vacuum switch valve according to claim 2, wherein An air inlet interface is mounted at the air inlet.

7. The vacuum switch valve according to claim 1, characterized in that An air outlet interface is mounted at the air outlet.

8. The vacuum switch valve according to claim 1, characterized in that ​ 9. The vacuum switch valve according to claim 1, characterized in that ​ 10. The vacuum switch valve according to claim 1, characterized in that ​

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