CN216894791U - Vacuum pump - Google Patents
Vacuum pump Download PDFInfo
- Publication number
- CN216894791U CN216894791U CN202123414797.4U CN202123414797U CN216894791U CN 216894791 U CN216894791 U CN 216894791U CN 202123414797 U CN202123414797 U CN 202123414797U CN 216894791 U CN216894791 U CN 216894791U
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- China
- Prior art keywords
- pump
- vacuum pump
- cover plate
- suction hole
- connecting pipe
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Abstract
The utility model relates to the technical field of power equipment, in particular to a vacuum pump. The utility model provides a vacuum pump, which aims to solve the problem of large radial section of the existing vacuum pump and comprises a pump shell and a cover plate, wherein the cover plate is arranged on the pump shell and blocks a pump cavity in the pump shell, an air suction hole is formed in an installation surface, facing the pump cavity, of the cover plate, a connecting pipe for installing a one-way valve is arranged on the outer wall, facing away from the pump cavity, of the cover plate, and the connecting pipe is communicated with the pump cavity through the air suction hole. The air suction hole in the vacuum pump and the connecting pipe for installing the check valve are both arranged on the cover plate, so that the radial section of the vacuum pump can be reduced, and the problem of inconvenient installation and arrangement of the vacuum pump due to the overlarge radial section can be solved.
Description
Technical Field
The utility model relates to the technical field of power equipment, in particular to a vacuum pump.
Background
As shown in fig. 1, a pump casing 01 of a conventional vacuum pump is provided with a pumping hole 011 on a side wall thereof and a connecting pipe 012 for attaching a check valve, the connecting pipe 012 being located outside the pump casing 01 and communicating with a pump chamber 013 of the pump casing 01 through the pumping hole. The radial section of the vacuum pump is large, and when the vacuum pump is installed and arranged, the occupied radial space is large, and the installation and the arrangement are inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model provides a vacuum pump, which aims to solve the problem of large radial section of the existing vacuum pump and comprises a pump shell and a cover plate, wherein the cover plate is arranged on the pump shell and blocks a pump cavity in the pump shell, an air suction hole is formed in an installation surface, facing the pump cavity, of the cover plate, a connecting pipe for installing a one-way valve is arranged on the outer wall, facing away from the pump cavity, of the cover plate, and the connecting pipe is communicated with the pump cavity through the air suction hole. The air suction hole in the vacuum pump and the connecting pipe for installing the check valve are both arranged on the cover plate, so that the radial section of the vacuum pump can be reduced, and the problem of inconvenient installation and arrangement of the vacuum pump due to the overlarge radial section can be solved.
Preferably, the suction hole is close to an edge of the cover plate. Like this, set up the aspirating hole in the edge that is close to the apron, can enlarge the space that the connecting pipe of installation check valve can occupy on radial cross section to can reduce the axial length of vacuum pump on the basis of the radial cross section that reduces the vacuum pump, and then can reduce the vacuum pump at the required installation space of axial direction, make things convenient for the installation of vacuum to arrange. Further, the connecting pipe extends in a radial direction of the pump housing, and a central axis of the connecting pipe is perpendicular to a central axis of the suction hole. In this way, the space that the connecting tube mounting the check valve can occupy in radial section can be further enlarged. Further preferably, the pipe orifice of the connecting pipe, on which the one-way valve is installed, and the suction hole are located on both sides of the central axis of the vacuum pump. Therefore, the communicating hole between the one-way valve arranged at the pipe orifice of the connecting pipe and the pump cavity of the vacuum pump can be prolonged, and the influence on the use of the vacuum pump caused by the rapid change of the air pressure in the pump cavity of the vacuum pump due to the change of the working state of the one-way valve is avoided.
Drawings
FIG. 1 is a schematic structural diagram of a pump casing of a conventional vacuum pump;
FIG. 2 is a schematic view of the vacuum pump of the present invention with a check valve mounted thereon;
FIG. 3 is a schematic view of the construction of the vacuum pump of the present invention;
FIG. 4 is a schematic top view of the vacuum pump of FIG. 3;
fig. 5 is a schematic sectional structure view of a-a in fig. 4.
Detailed Description
The vacuum pump of the present invention will be described in detail with reference to FIGS. 2 to 5.
As shown in fig. 2 to 5, the vacuum pump of the present invention includes a pump casing 1 and a cover plate 2, the cover plate 2 is mounted on the pump casing 1 and seals the pump cavity 11 in the pump casing 1, a suction hole 21 is provided on a mounting surface of the cover plate 2 facing the pump cavity 11, a connecting pipe 22 for mounting the check valve 3 is provided on an outer wall of the cover plate 2 facing away from the pump cavity 11, and the connecting pipe 22 is communicated with the pump cavity 11 through the suction hole 21. The air suction hole 21 and the connecting pipe 22 for installing the check valve 3 in the vacuum pump are both arranged on the cover plate 2, so that the radial section of the vacuum pump can be reduced, and the problem of inconvenient installation and arrangement of the vacuum pump due to overlarge radial section can be solved. Preferably, the suction holes 21 are close to the edge of the cover plate 2. Like this, set up aspirating hole 21 in the edge that is close to apron 2, can enlarge the space that connecting pipe 22 of installation check valve 3 can occupy on radial cross section to can reduce the axial length of vacuum pump on the basis of the radial cross section that reduces the vacuum pump, and then can reduce the required installation space of vacuum pump in axial direction, make things convenient for the installation of vacuum to arrange. Preferably, the connection pipe 22 extends in a radial direction of the pump case 1, and a central axis of the connection pipe 22 is perpendicular to a central axis of the suction hole 21. In this way, the space that the connecting tube 22 mounting the check valve 3 can occupy in radial section can be further enlarged. Preferably, the nozzle 221 of the connecting pipe 22 on which the check valve 3 is mounted and the suction hole 21 are located at both sides of the central axis of the vacuum pump. Therefore, the communication hole between the check valve 3 and the pump cavity 11 of the vacuum pump can be prolonged and arranged at the pipe orifice 221 of the connecting pipe 22, and the influence on the use of the vacuum pump caused by the rapid change of the air pressure in the pump cavity 11 of the vacuum pump due to the change of the working state of the check valve 3 can be avoided.
Claims (4)
1. A vacuum pump is characterized by comprising a pump shell and a cover plate, wherein the cover plate is installed on the pump shell and used for blocking a pump cavity in the pump shell, an air suction hole is formed in an installation surface, facing the pump cavity, of the cover plate, a connecting pipe used for installing a one-way valve is arranged on the outer wall, facing away from the pump cavity, of the cover plate, and the connecting pipe is communicated with the pump cavity through the air suction hole.
2. A vacuum pump according to claim 1, wherein the bleed holes are located near an edge of the cover plate.
3. A vacuum pump according to claim 2, wherein the connection pipe extends in a radial direction of the pump casing, and a central axis of the connection pipe is perpendicular to a central axis of the suction hole.
4. A vacuum pump according to claim 3, wherein the nozzle of the connecting tube on which the one-way valve is mounted and the suction hole are located on both sides of a central axis of the vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123414797.4U CN216894791U (en) | 2021-12-31 | 2021-12-31 | Vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123414797.4U CN216894791U (en) | 2021-12-31 | 2021-12-31 | Vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216894791U true CN216894791U (en) | 2022-07-05 |
Family
ID=82210989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123414797.4U Active CN216894791U (en) | 2021-12-31 | 2021-12-31 | Vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216894791U (en) |
-
2021
- 2021-12-31 CN CN202123414797.4U patent/CN216894791U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |