CN219263462U - Vacuum equipment sealing mechanism - Google Patents
Vacuum equipment sealing mechanism Download PDFInfo
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- CN219263462U CN219263462U CN202320551163.3U CN202320551163U CN219263462U CN 219263462 U CN219263462 U CN 219263462U CN 202320551163 U CN202320551163 U CN 202320551163U CN 219263462 U CN219263462 U CN 219263462U
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- dovetail groove
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses a sealing mechanism of vacuum equipment, which can effectively solve the problem of short service life of a sealing ring; the sealing device comprises a flange plate and a sealing assembly arranged on the flange plate; the sealing assembly comprises a sealing groove and a sealing ring arranged in the sealing groove; the seal groove is an annular dovetail groove, the inner annular wall of the dovetail groove part is formed by a movable part side surface, and the movable part is fixed on the flange plate through bolts. The beneficial effects are that: when the device is used, the air temperature is higher when the vacuum pump works due to the low pressure of the air inlet end; the gas enters the sealing groove after passing through the gap between the upper flange and the lower flange, and the sealing groove in the device adopts the dovetail groove, and the sealing ring adopts the O-shaped sealing ring, so that the sealing ring cannot completely fill the whole dovetail groove after the dovetail groove is pressed, gaps at four corners can be left, the contact area of the sealing ring and the dovetail groove is reduced, the area of temperature transmission is reduced, and the service life of the sealing ring is prolonged.
Description
Technical Field
The utility model relates to a sealing mechanism of vacuum equipment, and belongs to the field of vacuum sealing equipment.
Background
The vacuum equipment is more and more widely used in various industries, and can be classified into a plurality of categories according to different uses; one type is equipment for producing, optimizing or maintaining vacuum. Such as mechanical vacuum pumps, vapor flow vacuum pumps, gas trapping vacuum pumps, vacuum sets, etc.; also useful for detecting the presence or location of leaks in vacuum systems or components, such as high frequency spark leak detectors, halogen leak detectors, helium mass spectrometer leak detectors, and the like; in both cases, a sealing device is required to ensure a vacuum environment when the connection is made, and flange sealing is the most common method.
For flange sealing, the rubber ring is the most commonly used sealing ring in detachable connection, and is generally placed in the flange groove, when two flange faces are uniformly clamped by the screw, the rubber ring is deformed by pressing to fill the flange groove and block the gap, so that the sealing ring plays a role in static sealing.
The sealing mechanism in the flange for connecting hose of the chinese utility model patent application No. CN202123233545.1 includes: the sealing device comprises a first sealing groove, a second sealing groove and a sealing insert ring, wherein a first sealing rubber ring is adhered to the inner part of the first sealing groove, a second sealing rubber ring is adhered to the inner part of the second sealing groove, and double rubber seals are formed between flanges, so that the sealing performance of the flange lamination is improved; however, according to the attached drawings, the first sealing groove and the second sealing groove are rectangular grooves, and the first sealing rubber ring and the second sealing rubber ring are rectangular sealing rings; the arrangement of the sealing ring and the sealing groove can lead to large contact area of the sealing ring and the sealing groove, so that the heat dissipation effect is poor, and if the temperature difference of the sealing environment is too large, the vacuum equipment such as a vacuum pump is very low in pressure at the air inlet end when working, the higher the air temperature is, the service life of the sealing ring can be influenced under the condition of high temperature for a long time, and the sealing ring needs to be replaced frequently.
Disclosure of Invention
The utility model aims to provide a sealing mechanism of vacuum equipment, which can effectively solve the problem of short service life of a sealing ring.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
the sealing device comprises a flange plate and a sealing assembly arranged on the flange plate; the sealing assembly comprises a sealing groove and a sealing ring arranged in the sealing groove; the sealing groove is an annular dovetail groove, part of the inner annular wall of the dovetail groove is formed by a side face of a movable piece, and the movable piece is fixed on the flange plate through bolts.
Further: the flange plate comprises an upper flange and a lower flange, the upper flange and the lower flange are connected through bolts, and the dovetail groove is formed in the bottom surface of the upper flange;
the movable piece comprises a mounting piece and a pressing piece, one side of the pressing piece forms part of the inner annular wall of the dovetail groove, and the inner surface of the mounting piece and the inner surface of the flange plate are smoothly arranged.
Further: the flange plate comprises an upper flange and a lower flange, the upper flange and the lower flange are connected through bolts, and the dovetail groove is partially arranged on the bottom surface of the upper flange and partially arranged on the upper end surface of the lower flange;
the movable piece comprises a mounting piece and a pressing piece, one side of the pressing piece forms part of the inner annular wall of the dovetail groove, and the inner surface of the mounting piece and the inner surface of the flange plate are smoothly arranged; and the number of the movable parts is two, one of the movable parts is arranged on the upper flange, and the other movable part is arranged on the lower flange.
Further: the mounting piece and the pressing piece are annular pieces.
Further: the sealing ring is an O-shaped sealing ring.
Further: the sealing ring is made of one of nitrile rubber, silicon rubber and hydrogenated nitrile rubber.
The beneficial effects are as follows:
when the device is used, the device can be used for sealing connection of vacuum pump pipelines, sealing connection of helium mass spectrometer leak detector pipelines and the like; for example, when the vacuum pump works, the air temperature is higher as the pressure of the air inlet end is low; the gas enters the sealing groove after passing through the gap between the upper flange and the lower flange, and the sealing groove in the device adopts the dovetail groove, and the sealing ring adopts the O-shaped sealing ring, so that the sealing ring cannot completely fill the whole dovetail groove after the dovetail groove is pressed, gaps at four corners can be left, the contact area of the sealing ring and the dovetail groove is reduced, the area of temperature transmission is reduced, and the service life of the sealing ring is prolonged.
Drawings
For ease of illustration, the utility model is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of an embodiment of the present utility model;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a diagram showing a construction of an upper flange according to an embodiment of the present utility model;
FIG. 5 is a second cross-sectional view of an embodiment of the present utility model;
fig. 6 is a schematic structural diagram of a third upper flange according to an embodiment of the present utility model.
Reference numerals illustrate:
1. sealing grooves; 2. a seal ring; 3. a movable member; 31. a mounting piece; 32. a compacting sheet; 4. an upper flange; 5. and a lower flange.
Detailed Description
Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
Referring to figures 1-4 of the drawings there is shown an embodiment of a vacuum apparatus seal mechanism of the present utility model,
embodiment one:
the sealing device comprises a flange plate and a sealing assembly arranged on the flange plate; the sealing assembly comprises a sealing groove 1 and a sealing ring 2 arranged in the sealing groove 1; the sealing groove 1 is an annular dovetail groove, the inner annular wall of the dovetail groove part is formed by the side face of a movable piece 3, and the movable piece 3 is fixed on the flange plate through bolts.
The flange plate comprises an upper flange 4 and a lower flange 5, the upper flange 4 and the lower flange 5 are connected through bolts, and a dovetail groove is formed in the bottom surface of the upper flange 4;
the movable part 3 comprises a mounting plate 31 and a pressing plate 32, one side of the pressing plate 32 forms part of the inner annular wall of the dovetail groove, and the inner surface of the mounting plate 31 and the inner surface of the flange plate are smoothly arranged.
The sealing ring 2 adopts an O-shaped sealing ring 2; the sealing ring 2 is made of nitrile rubber.
When the device is used, the device can be used for sealing connection of vacuum pump pipelines, sealing connection of helium mass spectrometer leak detector pipelines and the like; for example, when the vacuum pump works, the air temperature is higher as the pressure of the air inlet end is low; the gas enters the sealing groove 1 after passing through the gap between the upper flange 4 and the lower flange 5, and the sealing groove 1 in the device adopts a dovetail groove, and the sealing ring 2 adopts a 0-type sealing ring, so that the sealing ring 2 cannot completely fill the whole dovetail groove after the dovetail groove is pressed, gaps at four corners can be left, the contact area of the sealing ring 2 and the dovetail groove is reduced, the temperature transmission area is reduced, and the service life of the sealing ring 1 is prolonged.
The movable part 3 in the device has the main function of facilitating the installation of the 0-shaped sealing ring in the dovetail groove or the disassembly of the sealing ring from the dovetail groove. The concrete operation mode is that the movable piece 3 can be detached from the upper flange 4 by screwing the bolts of the mounting piece 31 and the upper flange 4, and at the moment, part of the groove wall of the dovetail groove is missing, so that an operator can put the sealing ring 2 into the sealing groove 1 or take the sealing ring out of the sealing groove 1 by a tool or manually.
Embodiment II, as shown in FIG. 5
The difference between this embodiment and the above embodiment is that:
the flange plate comprises an upper flange 4 and a lower flange 5, the upper flange 4 and the lower flange 5 are connected through bolts, and a dovetail groove is partially arranged on the bottom surface of the upper flange 4 and partially arranged on the upper end surface of the lower flange 5;
the movable piece 3 comprises a mounting piece 31 and a pressing piece 32, one side of the pressing piece 32 forms part of the inner annular wall of the dovetail groove, and the inner surface of the mounting piece 31 and the inner surface of the flange plate are smoothly arranged; and the number of the movable pieces 3 is two, one of the movable pieces is arranged on the upper flange 4, and the other movable piece is arranged on the lower flange 5.
The reason for this is that the deformation characteristic of the 0 type sealing ring in the dovetail groove is that after the sealing ring 2 is pressed in the sealing groove 1, the sealing ring 2 is deformed under pressure, and two sides of the sealing ring are pressed on the side wall of the sealing groove 1, and at the moment, the pressure exerted on the two sides of the sealing ring 2 and the upper and lower groove walls of the sealing groove 1 is the largest; the gap between the upper flange 4 and the lower flange 5 is positioned at the position of the maximum pressure applied to the wall of the sealing groove 1 at the two sides of the sealing ring 2, so that the sealing effect of the device can be improved.
Embodiment III, as in FIG. 6
The difference between this embodiment and the above embodiment is that:
the mounting plate 31 and the pressing plate 32 are annular plates.
In the first embodiment, a plurality of mounting plates 31 and pressing plates 32 may be circumferentially and uniformly distributed to reduce the cost, and the sealing ring 2 may be conveniently detached from the sealing groove 1.
The same applies to the second embodiment.
In the present embodiment, the mounting piece 31 and the pressing piece 32 are provided in a ring, so that the sealing ring 2 can be easily taken out of the sealing groove 1.
The above embodiments are merely illustrative embodiments of the present utility model, but the technical features of the present utility model are not limited thereto, and any changes or modifications made by those skilled in the art within the scope of the present utility model are included in the scope of the present utility model.
Claims (6)
1. A vacuum equipment sealing mechanism, characterized in that: the sealing device comprises a flange plate and a sealing assembly arranged on the flange plate; the sealing assembly comprises a sealing groove (1) and a sealing ring (2) arranged in the sealing groove (1); the sealing groove (1) is an annular dovetail groove, part of the inner annular wall of the dovetail groove is formed by the side face of a movable piece (3), and the movable piece (3) is fixed on the flange plate through bolts.
2. The vacuum apparatus seal mechanism of claim 1, wherein: the flange plate comprises an upper flange (4) and a lower flange (5), the upper flange (4) and the lower flange (5) are connected through bolts, and the dovetail groove is formed in the bottom surface of the upper flange (4); the movable piece (3) comprises a mounting piece (31) and a pressing piece (32), one side of the pressing piece (32) forms a part of inner annular wall of the dovetail groove, and the inner surface of the mounting piece (31) and the inner surface of the flange plate are smoothly arranged.
3. The vacuum apparatus seal mechanism of claim 1, wherein: the flange plate comprises an upper flange (4) and a lower flange (5), wherein the upper flange (4) and the lower flange (5) are connected through bolts, and the dovetail groove is partially arranged on the bottom surface of the upper flange (4) and is partially arranged on the upper end surface of the lower flange (5); the movable piece (3) comprises a mounting piece (31) and a pressing piece (32), one side of the pressing piece (32) forms part of the inner annular wall of the dovetail groove, and the inner surface of the mounting piece (31) and the inner surface of the flange plate are smoothly arranged; and the number of the movable pieces (3) is two, one of the movable pieces is arranged on the upper flange (4), and the other movable piece is arranged on the lower flange (5).
4. A vacuum apparatus seal mechanism according to claim 3, wherein: the mounting sheet (31) and the pressing sheet (32) are annular sheets.
5. A vacuum apparatus seal mechanism according to claim 3, wherein: the sealing ring (2) is an O-shaped sealing ring (2).
6. A vacuum apparatus seal mechanism according to claim 3, wherein: the sealing ring (2) is made of one of nitrile rubber, silicon rubber and hydrogenated nitrile rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320551163.3U CN219263462U (en) | 2023-03-21 | 2023-03-21 | Vacuum equipment sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320551163.3U CN219263462U (en) | 2023-03-21 | 2023-03-21 | Vacuum equipment sealing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219263462U true CN219263462U (en) | 2023-06-27 |
Family
ID=86867665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320551163.3U Active CN219263462U (en) | 2023-03-21 | 2023-03-21 | Vacuum equipment sealing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219263462U (en) |
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2023
- 2023-03-21 CN CN202320551163.3U patent/CN219263462U/en active Active
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