CN214617037U - Micro-oil screw vacuum pump - Google Patents
Micro-oil screw vacuum pump Download PDFInfo
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- CN214617037U CN214617037U CN202120530571.1U CN202120530571U CN214617037U CN 214617037 U CN214617037 U CN 214617037U CN 202120530571 U CN202120530571 U CN 202120530571U CN 214617037 U CN214617037 U CN 214617037U
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- vacuum pump
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- screw vacuum
- oil screw
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Abstract
The utility model relates to a micro-oil screw vacuum pump, which comprises a sectional cavity, wherein the sectional cavity comprises a bearing seat and a shell which are connected with each other, and a female rotor and a male rotor which are mutually meshed are arranged in the sectional cavity; a first female rotor bearing and a first male rotor bearing are arranged on the bearing seat; and a second female rotor bearing and a second male rotor bearing are arranged on the shell at positions corresponding to the first female rotor bearing and the first male rotor bearing. The micro-oil screw vacuum pump simplifies the internal structure, reduces the components, and greatly facilitates the disassembly and the installation of the vacuum pump, so the working hours required by the manufacture are less, and the maintenance is more convenient; due to the special arrangement and matching of the bearings, the micro-oil screw vacuum pump is more suitable for high rotating speed than the traditional micro-oil screw vacuum pump.
Description
Technical Field
The utility model relates to a vacuum pump field especially relates to a tiny-oil screw vacuum pump.
Background
The micro-oil screw vacuum pump uses oil to keep the seal of the moving parts, and uses the volume change of the cavity to pump air. The traditional micro-oil screw vacuum pump bearing arrangement is over designed in low-pressure application, is relatively expensive, has more bearings, has a structure which is time-consuming to install, and is not suitable for high rotating speed.
SUMMERY OF THE UTILITY MODEL
The utility model provides an overcome foretell defect among the prior art, provide a tiny-oil screw vacuum pump.
The utility model discloses a following technical scheme solves above-mentioned technical problem:
the micro-oil screw vacuum pump is characterized by comprising a sectional cavity, wherein the sectional cavity comprises a bearing seat and a shell which are connected with each other, and a female rotor and a male rotor which are meshed with each other are arranged in the sectional cavity; a first female rotor bearing and a first male rotor bearing are arranged on the bearing seat; and a second female rotor bearing and a second male rotor bearing are arranged on the shell at positions corresponding to the first female rotor bearing and the first male rotor bearing.
Preferably, a first auxiliary bearing is further arranged on the exhaust side of the female rotor, and the first auxiliary bearing is adjacent to the first female rotor bearing; a second auxiliary bearing is also provided on the exhaust side of the male rotor, the second auxiliary bearing being adjacent to the first male rotor bearing.
Preferably, the first auxiliary bearing includes a first outer frame, and a first wave spring is disposed on an exhaust side of the first auxiliary bearing and abuts against the first outer frame.
Preferably, the second auxiliary bearing includes a second outer frame, and a second wave spring is disposed on an exhaust side of the second auxiliary bearing and abuts against the second outer frame.
Preferably, the micro-oil screw vacuum pump further comprises an exhaust gas pressure plate arranged on the female rotor, and a bushing arranged on the male rotor.
Preferably, a bidirectional shaft seal is arranged between the bushing and the bearing seat.
The utility model has the advantages that: the micro-oil screw vacuum pump simplifies the internal structure, reduces the components, and greatly facilitates the disassembly and the installation of the vacuum pump, so the working hours required by the manufacture are less, and the maintenance is more convenient; due to the special arrangement and matching of the bearings, the micro-oil screw vacuum pump is more suitable for high rotating speed than the traditional micro-oil screw vacuum pump.
Drawings
Fig. 1 is a schematic cross-sectional view of a micro-oil screw vacuum pump according to a preferred embodiment of the present invention.
Detailed Description
The present invention will be more clearly and completely described with reference to the following preferred embodiments and the accompanying drawings.
As shown in fig. 1, the micro-oil screw vacuum pump in the present embodiment includes a sectional cavity including a bearing housing 3 and a housing 4 connected to each other, and a female rotor 1 and a male rotor 2 engaged with each other are provided in the sectional cavity. The bearing seat 3 is provided with a first female rotor bearing 6, a second female rotor bearing 5 is arranged on the shell 4 corresponding to the first female rotor bearing 6, and the female rotor 1 is rotatably arranged in the sectional cavity through the first female rotor bearing 6 and the second female rotor bearing 5. In addition, a first male rotor bearing 7 is provided on the bearing housing 3, a second male rotor bearing 5 'is provided on the housing 4 at a position corresponding to the first male rotor bearing 7, and the male rotor 2 is rotatably provided in the sectional cavity through the first male rotor bearing 7 and the second male rotor bearing 5' and is engaged with the female rotor 1.
A first auxiliary bearing 9 is also provided on the exhaust side of the female rotor 1, the first auxiliary bearing 9 being disposed adjacent to the first female rotor bearing 6. A second auxiliary bearing 8 is also provided on the exhaust side of the male rotor 2, the second auxiliary bearing 8 being disposed adjacent to the first male rotor bearing 7.
The first auxiliary bearing 9 includes a first outer frame, a first wave spring 11 is disposed on an exhaust side of the first auxiliary bearing 9, and the first wave spring 11 is pressed against the first outer frame. Similarly, the second auxiliary bearing 8 includes a second outer frame, and a second wave spring 12 is disposed on an exhaust side of the second auxiliary bearing 8, and the second wave spring 12 is pressed against the second outer frame. An exhaust pressure plate 10 is further arranged on the female rotor 1, and the exhaust pressure plate 10 is pressed against the first auxiliary bearing 9. A bush 13 is provided on the male rotor 2, and a bidirectional shaft seal 14 is provided between the bush 13 and the bearing housing 3. The male/female rotors are pressed by the exhaust gas pressure plate 10 and the bushing 13, respectively, and can smoothly rotate without adjusting the exhaust gap. The two-way shaft seal 14 prevents both the flow of oil from the interior of the chamber and the flow of outside air from the chamber. The inner spiral line design of the shaft seal enables lubricating oil to flow into the shaft seal at a high rotating speed, high temperature cannot be generated, and smooth operation is achieved.
Although particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are examples only and that the scope of the present invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (6)
1. The micro-oil screw vacuum pump is characterized by comprising a sectional cavity, wherein the sectional cavity comprises a bearing seat and a shell which are connected with each other, and a female rotor and a male rotor which are meshed with each other are arranged in the sectional cavity; a first female rotor bearing and a first male rotor bearing are arranged on the bearing seat; and a second female rotor bearing and a second male rotor bearing are arranged on the shell at positions corresponding to the first female rotor bearing and the first male rotor bearing.
2. The micro-oil screw vacuum pump of claim 1, further comprising a first auxiliary bearing disposed on the exhaust side of the female rotor, the first auxiliary bearing being adjacent to the first female rotor bearing; a second auxiliary bearing is also provided on the exhaust side of the male rotor, the second auxiliary bearing being adjacent to the first male rotor bearing.
3. The micro-oil screw vacuum pump of claim 2, wherein the first auxiliary bearing comprises a first outer frame, and a first wave spring is disposed on an exhaust side of the first auxiliary bearing and is pressed against the first outer frame.
4. The micro-oil screw vacuum pump of claim 3, wherein the second auxiliary bearing comprises a second frame, and a second wave spring is disposed on the exhaust side of the second auxiliary bearing and is pressed against the second frame.
5. The micro-oil screw vacuum pump of claim 4, further comprising an exhaust plate disposed on the female rotor, and a bushing disposed on the male rotor.
6. The tiny-oil screw vacuum pump of claim 5, wherein a bidirectional shaft seal is provided between said bushing and said bearing housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120530571.1U CN214617037U (en) | 2021-03-15 | 2021-03-15 | Micro-oil screw vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120530571.1U CN214617037U (en) | 2021-03-15 | 2021-03-15 | Micro-oil screw vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214617037U true CN214617037U (en) | 2021-11-05 |
Family
ID=78393657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120530571.1U Active CN214617037U (en) | 2021-03-15 | 2021-03-15 | Micro-oil screw vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214617037U (en) |
-
2021
- 2021-03-15 CN CN202120530571.1U patent/CN214617037U/en active Active
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