CN105422460A - Vacuum pump - Google Patents
Vacuum pump Download PDFInfo
- Publication number
- CN105422460A CN105422460A CN201510938950.3A CN201510938950A CN105422460A CN 105422460 A CN105422460 A CN 105422460A CN 201510938950 A CN201510938950 A CN 201510938950A CN 105422460 A CN105422460 A CN 105422460A
- Authority
- CN
- China
- Prior art keywords
- pump
- rotor
- oil
- joint
- vacuum pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a vacuum pump which comprises a pump body, and a pump cover for sealing the pump body, wherein a pump cavity is formed inside the pump cover and the pump cover; a rotor is arranged in the pump cavity; a drive joint which is used for connecting a drive structure is arranged outside the end part, extending out of the pump body, of the rotor in a sleeving mode; the drive structure drives the rotor to rotate in the pump cavity by virtue of the drive joint; a joint of the rotor and the pump body is provided with an oil cavity; an oil inlet nozzle which is used for accessing lubricating oil is mounted on the center of the rotor; and an oil inlet channel for communicating the oil inlet nozzle with the oil cavity is arranged in the rotor. The vacuum pump has the beneficial effect of realizing directly providing lubricating oil to the joint of the rotor and the pump body.
Description
Technical field
The present invention relates to pump, particularly relate to a kind of vacuum pump.
Background technique
In prior art, vacuum pump comprises the pump housing, and by the pump cover that the pump housing is closed, pump cover and the pump housing are interior forms pump chamber, and be provided with rotor in pump chamber, rotor is driven by extraneous driving structure, and the rotation of rotor realizes air inlet in pump chamber and venting.Although this device achieves air-breathing and the degassing function of vacuum pump, there is following shortcoming in this device: 1) in Long-Time Service process, get rusty easily between the pump housing and rotor, therefore easily occur the phenomenon of clamping stagnation, affects the normal work of vacuum pump; 2) check valve assembly and the pump housing are integrally formed, and when check valve assembly damages, one-way valve is not easily changed.
Summary of the invention
The object of this invention is to provide a kind of vacuum pump, achieve directly for the joint of rotor and the pump housing provides lubricant oil.
The object of the invention is to realize by the following technical solutions:
A kind of vacuum pump, comprise the pump housing, by the pump cover that the pump housing is closed, form pump chamber in pump cover and the pump housing, being provided with rotor in pump chamber, outside the end of stretching out the pump housing of rotor, being equipped with the drive sub for connecting driving structure, driving structure drives rotor to rotate in pump chamber by drive sub, the joint of rotor and the pump housing is provided with oil pocket, and the center of rotor is provided with the oil intake nozzle for accessing lubricant oil, offers the oil inlet passage be communicated with oil pocket by oil intake nozzle in rotor.
Preferably, the joint of oil intake nozzle and rotor is provided with ball.When reducing rotor turns and the frictional force of oil intake nozzle, make the rotation of rotor more smooth and easy.
Preferably, the joint of oil intake nozzle and rotor is provided with and is positioned at the first other seal ring of ball.Prevent the gas in pump chamber from flowing through from the gap between oil intake nozzle and rotor, improve the sealing of pump chamber.
Preferably, the joint of pump cover and the pump housing is provided with the second seal ring.
Preferably, the suction tude of pump cover is communicated with check valve assembly, check valve assembly is fixed in suction tude by the first screw, and the joint of check valve assembly and suction tude is provided with the 3rd seal ring.When check valve assembly damages, be convenient for changing check valve assembly, and ensure that the sealing of pump chamber.
Preferably, pump cover includes housing lid and return-air lid, and return-air covers and is provided with return-air sheet, and return-air sheet is provided with the shell fragment of arc structure by the second screw, and in housing lid, the position of corresponding shell fragment offers mount inlet.When return-air lid rotates, rotated by return-air sheet band spring plate, shell fragment clashes into housing lid; Under the restoring force effect of shell fragment, achieve the returning quickly of return-air lid.
Preferably, mount inlet is provided with the baffle plate that restriction shell fragment ejects mount inlet.Mount inlet is ejected, for the return of shell fragment is given security when preventing shell fragment from being compressed.
Owing to have employed technique scheme, the present invention has the following advantages:
1) by arranging oil intake nozzle, oil pocket and oil inlet passage, achieve directly for the joint of rotor and the pump housing provides lubricant oil, prevent the appearance of the catching phenomenon of rotor, for the normal work of vacuum pump provides guarantee, extend the working life of vacuum pump;
2) by arranging this drive sub, while guarantee rotor is connected with drive unit, for the installation of oil intake nozzle provides condition.
Accompanying drawing explanation
Fig. 1 is the plan view of vacuum pump;
Fig. 2 is the worm's eye view of vacuum pump;
Fig. 3 is the A-A sectional view of Fig. 1;
Fig. 4 is the plan view of vacuum pump.
Embodiment
The technological means realized to make the present invention, creation characteristic, reach object and effect clearly and be easy to understand, below in conjunction with the drawings and specific embodiments, the present invention is further elaborated:
As shown in Figures 1 to 4, a kind of vacuum pump, comprise the pump housing 1, by the pump cover 3 that the pump housing 1 is closed, pump chamber 2 is formed in pump cover 3 and the pump housing 1, rotor 4 is provided with in pump chamber 2, the drive sub 5 for connecting driving structure is equipped with outside the end of stretching out the pump housing 1 of rotor 4, driving structure drives rotor 4 to rotate in pump chamber 2 by drive sub 5, rotor 4 is provided with oil pocket 62 with the joint of the pump housing 1, the center of rotor 4 is provided with the oil intake nozzle 6 for accessing lubricant oil, offers the oil inlet passage 61 be communicated with oil pocket 62 by oil intake nozzle 6 in rotor 4.
Oil intake nozzle 6 is provided with ball 63 with the joint of rotor 4.Oil intake nozzle 6 and the joint of rotor 4 are provided with and are positioned at the first other seal ring 64 of ball 63.
Pump cover 3 and the joint of the pump housing 1 are provided with the second seal ring 11.
The suction tude 12 of pump cover 3 is communicated with check valve assembly 13, and check valve assembly 13 is fixed in suction tude 12 by the first screw 14, and check valve assembly 13 is provided with the 3rd seal ring 15 with the joint of suction tude 12.
Pump cover 3 includes housing lid 31 and return-air lid, and return-air covers and is provided with return-air sheet, and return-air sheet is provided with the shell fragment 33 of arc structure by the second screw 32, and in housing lid 31, the position of corresponding shell fragment 33 offers mount inlet 34.Mount inlet 34 is provided with the baffle plate 35 that restriction shell fragment 33 ejects mount inlet 34.
Working principle of the present invention: by arranging oil intake nozzle 6, oil pocket 62 and oil inlet passage 61, achieve directly for rotor 4 and the joint of the pump housing 1 provide lubricant oil, prevent the appearance of the catching phenomenon of rotor 4, for the normal work of vacuum pump provides guarantee, extend the working life of vacuum pump; By arranging this drive sub 5, while guarantee rotor 4 is connected with drive unit, for the installation of oil intake nozzle 6 provides condition.
Although embodiment of the present invention are open as above, but it is not restricted to listed in specification and mode of execution utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.
Claims (7)
1. a vacuum pump, comprise the pump housing, by the pump cover that the pump housing is closed, form pump chamber in pump cover and the pump housing, in pump chamber, be provided with rotor, it is characterized in that, be equipped with the drive sub for connecting driving structure outside the end of stretching out the pump housing of rotor, driving structure drives rotor to rotate in pump chamber by drive sub, and the joint of rotor and the pump housing is provided with oil pocket, the center of rotor is provided with the oil intake nozzle for accessing lubricant oil, offers the oil inlet passage be communicated with oil pocket by oil intake nozzle in rotor.
2. vacuum pump according to claim 1, is characterized in that, the joint of oil intake nozzle and rotor is provided with ball.
3. vacuum according to claim 2 originally, is characterized in that, the joint of oil intake nozzle and rotor is provided with and is positioned at the first other seal ring of ball.
4. vacuum pump according to claim 1, is characterized in that, the joint of pump cover and the pump housing is provided with the second seal ring.
5. vacuum pump according to claim 1, is characterized in that, the suction tude of pump cover is communicated with check valve assembly, and check valve assembly is fixed in suction tude by the first screw, and the joint of check valve assembly and suction tude is provided with the 3rd seal ring.
6. vacuum pump according to claim 1, it is characterized in that, pump cover includes housing lid and return-air lid, and return-air covers and is provided with return-air sheet, return-air sheet is provided with the shell fragment of arc structure by the second screw, and in housing lid, the position of corresponding shell fragment offers mount inlet.
7. vacuum pump according to claim 6, is characterized in that, mount inlet is provided with the baffle plate that restriction shell fragment ejects mount inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510938950.3A CN105422460A (en) | 2015-12-16 | 2015-12-16 | Vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510938950.3A CN105422460A (en) | 2015-12-16 | 2015-12-16 | Vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105422460A true CN105422460A (en) | 2016-03-23 |
Family
ID=55500919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510938950.3A Pending CN105422460A (en) | 2015-12-16 | 2015-12-16 | Vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105422460A (en) |
-
2015
- 2015-12-16 CN CN201510938950.3A patent/CN105422460A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160323 |
|
| WD01 | Invention patent application deemed withdrawn after publication |