CN205383082U - Vacuum pump - Google Patents
Vacuum pump Download PDFInfo
- Publication number
- CN205383082U CN205383082U CN201521047958.2U CN201521047958U CN205383082U CN 205383082 U CN205383082 U CN 205383082U CN 201521047958 U CN201521047958 U CN 201521047958U CN 205383082 U CN205383082 U CN 205383082U
- Authority
- CN
- China
- Prior art keywords
- rotor
- pump
- junction
- vacuum pump
- air
- 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.)
- Expired - Fee Related
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model discloses a vacuum pump, including the pump body, with pump body confined pump cover, form the pump chamber in pump cover and the pump body, be provided with the rotor in the pump chamber, the drive sub that is used for connecting the drive structure is put to the tip overcoat that stretches out the pump body of rotor, and the drive structure is provided with oil pocket at pump chamber internal rotation, rotor with the junction of the pump body through drive sub drive rotor, and the oil feed mouth that is used for inserting lubricating oil is installed at the center of rotor, offers in the rotor the oil feed passageway of oil feed mouth with the oil pocket intercommunication. The beneficial effect of the utility model: realized that direct junction for the rotor and the pump body provides lubricating oil.
Description
Technical field
This utility model relates to pump, particularly relates to a kind of vacuum pump.
Background technology
In prior art, vacuum pump includes the pump housing, the pump cover closed by the pump housing, forms pump chamber, be provided with rotor in pump chamber in pump cover and the pump housing, and rotor is driven structure to drive by the external world, and the rotation of rotor realizes the air inlet in pump chamber and venting.Although this device achieves air-breathing and the degassing function of vacuum pump, but this device has the disadvantage in that 1) in life-time service process, get rusty easily between the pump housing and rotor, therefore the phenomenon of clamping stagnation easily occurs, affect the normal operation of vacuum pump；2) check valve assembly and the pump housing are integrally formed, and when check valve assembly damages, check valve is not easily changed.
Utility model content
The purpose of this utility model is to provide a kind of vacuum pump, it is achieved that directly the junction for rotor with the pump housing provides lubricating oil.
The purpose of this utility model realizes by the following technical solutions:
A kind of vacuum pump, including the pump housing, 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, be equipped with for connecting the drive sub driving structure outside the end stretching out the pump housing of rotor, structure is driven to drive rotor to rotate in pump chamber by drive sub, the junction of rotor and the pump housing is provided with oil pocket, and the center of rotor is provided with the inlet nozzle for accessing lubricating oil, offers the oil inlet passage connected with oil pocket by inlet nozzle in rotor.
Preferably, inlet nozzle is provided with ball with the junction of rotor.Reduce the frictional force with inlet nozzle when rotor rotates so that the rotation of rotor is more smooth and easy.
Preferably, inlet nozzle is provided with, with the junction of rotor, the first sealing ring being positioned at ball side.Prevent the gas in pump chamber from flowing through from the gap between inlet nozzle and rotor, improve the sealing of pump chamber.
Preferably, the junction of pump cover Yu the pump housing is provided with the second sealing ring.
Preferably, being communicated with check valve assembly in the air inlet pipe of pump cover, check valve assembly is fixed in air inlet pipe by the first screw, and the junction of check valve assembly and air inlet pipe is provided with the 3rd sealing ring.When check valve assembly damages, it is convenient for changing check valve assembly, and ensure that the sealing of pump chamber.
Preferably, pump cover includes case lid and return-air lid, and return-air lid 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 case lid, the position of corresponding shell fragment offers installing port.When return-air lid rotates, being rotated by return-air sheet band spring plate, shell fragment clashes into case lid；Under the restoring force effect of shell fragment, it is achieved that the returning quickly of return-air lid.
Preferably, installing port is provided with restriction shell fragment and ejects the baffle plate of installing port.Ejecting installing port when preventing shell fragment from being compressed, the return for shell fragment provides guarantee.
Owing to have employed technique scheme, this utility model has the advantage that
1) by arranging inlet nozzle, oil pocket and oil inlet passage, it is achieved that directly the junction for rotor with the pump housing provides lubricating oil, it is therefore prevented that the appearance of the catching phenomenon of rotor, the normal operation for vacuum pump provides guarantee, extends the service life of vacuum pump；
2) by arranging this drive sub, while ensureing that rotor is connected with driving device, the installation for inlet nozzle provides condition.
Accompanying drawing explanation
Fig. 1 is the front view of vacuum pump；
Fig. 2 is the upward view of vacuum pump；
Fig. 3 is the E-E sectional view in Fig. 2；
Fig. 4 is the top view of vacuum pump.
Detailed description of the invention
For the technological means making this utility model realize, creation characteristic, reach purpose and act on clearly and be apparent to, below in conjunction with the drawings and specific embodiments, this utility model is further elaborated:
As shown in Figures 1 to 4, a kind of vacuum pump, including the pump housing 1, 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 it is provided with in pump chamber 2, it is equipped with for connecting the drive sub 5 driving structure outside the end stretching out the pump housing 1 of rotor 4, structure is driven to drive rotor 4 to rotate in pump chamber 2 by drive sub 5, the junction of rotor 4 and the pump housing 1 is provided with oil pocket 62, the center of rotor 4 is provided with the inlet nozzle 6 for accessing lubricating oil, offers the oil inlet passage 61 connected with oil pocket 62 by inlet nozzle 6 in rotor 4.
The junction of inlet nozzle 6 and rotor 4 is provided with ball 63.The junction of inlet nozzle 6 and rotor 4 is provided with and is positioned at the first sealing ring 64 that ball 63 is other.
The junction of pump cover 3 with the pump housing 1 is provided with the second sealing ring 11.
Being communicated with check valve assembly 13 in the air inlet pipe 12 of pump cover 3, check valve assembly 13 is fixed in air inlet pipe 12 by the first screw 14, and the junction of check valve assembly 13 and air inlet pipe 12 is provided with the 3rd sealing ring 15.
Pump cover 3 includes case lid 31 and return-air lid, and return-air lid 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 case lid 31, the position of corresponding shell fragment 33 offers installing port 34.Installing port 34 is provided with restriction shell fragment 33 and ejects the baffle plate 35 of installing port 34.
Operation principle of the present utility model: by arranging inlet nozzle 6, oil pocket 62 and oil inlet passage 61, junction offer lubricating oil directly for rotor 4 with the pump housing 1 is provided, prevent the appearance of the catching phenomenon of rotor 4, normal operation for vacuum pump provides guarantee, extends the service life of vacuum pump；By arranging this drive sub 5, while ensureing that rotor 4 is connected with driving device, the installation for inlet nozzle 6 provides condition.
Although embodiment of the present utility model is disclosed as above, but listed utilization that it is not restricted in description and embodiment, it can be applied to various applicable field of the present utility model completely, for those skilled in the art, it is easily achieved other amendment, therefore, under the general concept limited without departing substantially from claim and equivalency range, this utility model is not limited to specific details and shown here as the legend with description.
Claims (7)
1. a vacuum pump, including the pump housing, the pump cover closed by the pump housing, forms pump chamber in pump cover and the pump housing, is provided with rotor in pump chamber, it is characterized in that, being equipped with outside the end stretching out the pump housing of rotor for connecting the drive sub driving structure, drive structure to drive rotor to rotate in pump chamber by drive sub, the junction of rotor and the pump housing is provided with oil pocket, the center of rotor is provided with the inlet nozzle for accessing lubricating oil, offers the oil inlet passage connected with oil pocket by inlet nozzle in rotor.
2. vacuum pump according to claim 1, it is characterised in that the junction of inlet nozzle and rotor is provided with ball.
3. vacuum pump according to claim 2, it is characterised in that the junction of inlet nozzle and rotor is provided with and is positioned at the first sealing ring that ball is other.
4. vacuum pump according to claim 1, it is characterised in that the junction of pump cover Yu the pump housing is provided with the second sealing ring.
5. vacuum pump according to claim 1, it is characterised in that be communicated with check valve assembly in the air inlet pipe of pump cover, check valve assembly is fixed in air inlet pipe by the first screw, and the junction of check valve assembly and air inlet pipe is provided with the 3rd sealing ring.
6. vacuum pump according to claim 1, it is characterized in that, pump cover includes case lid and return-air lid, and return-air lid is provided with return-air sheet, return-air sheet is provided with the shell fragment of arc structure by the second screw, and in case lid, the position of corresponding shell fragment offers installing port.
7. vacuum pump according to claim 6, it is characterised in that be provided with restriction shell fragment on installing port and eject the baffle plate of installing port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521047958.2U CN205383082U (en) | 2015-12-16 | 2015-12-16 | Vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521047958.2U CN205383082U (en) | 2015-12-16 | 2015-12-16 | Vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205383082U true CN205383082U (en) | 2016-07-13 |
Family
ID=56338505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521047958.2U Expired - Fee Related CN205383082U (en) | 2015-12-16 | 2015-12-16 | Vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205383082U (en) |
-
2015
- 2015-12-16 CN CN201521047958.2U patent/CN205383082U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160713 Termination date: 20171216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |