CN207437358U - A kind of positive-displacement vacuum pump - Google Patents
A kind of positive-displacement vacuum pump Download PDFInfo
- Publication number
- CN207437358U CN207437358U CN201721462755.9U CN201721462755U CN207437358U CN 207437358 U CN207437358 U CN 207437358U CN 201721462755 U CN201721462755 U CN 201721462755U CN 207437358 U CN207437358 U CN 207437358U
- Authority
- CN
- China
- Prior art keywords
- pump chamber
- pump
- drain passage
- oil drain
- impeller blade
- 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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Abstract
The utility model provides a kind of positive-displacement vacuum pump, belongs to mechanical processing manufacturing technology field.It solves the problems, such as existing vacuum pump performance stabilization, low energy consumption.This positive-displacement vacuum pump, the pump chamber wall being distributed including pump case and along pump case edge, pump chamber wall is circumferentially around being formed with pump chamber, the pneumatic inlet and pneumatic outlet being separated from each other are provided in pump chamber, it is provided in pump chamber in circular rotor, and the guide groove there are two radial direction is set on rotor block, impeller blade is provided between two guide grooves, two axial end portions of impeller blade are both provided with the blade head being supported on radially movablely on impeller blade, oil drain passage is provided in a side of impeller blade end, oil drain passage is provided with channel groove, and slot opening is oriented in a circumferential direction and in sagittal plane, the oily receiving cavity being connected with oil drain passage is provided in rotor block.The utility model has the advantages that performance stabilization, low energy consumption.
Description
Technical field
The utility model belongs to mechanical processing manufacturing technology field, is related to a kind of pump, more particularly to a kind of positive displacement vacuum
Pump.
Background technology
Vacuum pump is a kind of rotating volume-varying gas transfer pump, including dry screw vacuum pump, water ring pump, reciprocating pump,
Slide valve pump, sliding vane rotary pump, lobe pump and diffusion pump etc. have the characteristics that there is larger pumping speed in wider pressure limit, wide
It is general to be used for the industries such as metallurgy, chemical industry, food, electronics plated film.
Positive-displacement vacuum pump is one kind of vacuum pump, is mainly used among automobile, is reserved as switching, servo brake
The actuating vacuum of device actuator etc..Positive-displacement vacuum pump on existing market is mostly all by the way of oil lubrication come work, oil
The vacuum pump of lubrication reduces the friction loss in work, reduces abrasion, and since rotation pump chamber is preferably pneumatically isolated,
Improve the efficiency of pump.If however, there are still substantial amounts of oil in the pump chamber of rotation, if oil is not complete in the discharge stage
Therefore full discharge is simultaneously compressed, then may cause the increase of the high pressure load and power consumption at blade head.
The content of the invention
The purpose of this utility model is for the above-mentioned problems in the prior art, and it is stable, low to provide a kind of performance
The positive-displacement vacuum pump of energy consumption.
The purpose of this utility model can be realized by following technical proposal:A kind of positive-displacement vacuum pump, including pump case
And the pump chamber wall being distributed along pump case edge, the pump chamber wall are set circumferentially around pump chamber is formed in the pump chamber
There are the pneumatic inlet and pneumatic outlet being separated from each other, which is characterized in that it is provided in the pump chamber in circular rotor, and
Guide groove there are two radial direction on rotor block is set, impeller blade is provided between the guide groove described in two, the impeller blade
Two axial end portions are both provided with the blade head being supported on radially movablely on impeller blade, the impeller blade end one side
Oil drain passage is provided on side, the oil drain passage is provided with channel groove, and slot opening is oriented in a circumferential direction and is located at
In sagittal plane, the oily receiving cavity being connected with oil drain passage is provided in the rotor block.
The operation principle of this positive-displacement vacuum pump:Vacuum pump is equipped with rotor, and oily receiving cavity is equipped among rotor, is collected in oil
Oil in receiving cavity can be discharged from oil drain passage, and rotor, which is surrounded and is limited in pump chamber by the pump chamber wall of surrounding, to be rotated, oil extraction
Passage is equipped with channel groove on sagittal plane, and channel groove is arranged so that oil can be only in the retracted position of impeller blade end
During compression stage oil pocket is flowed to from pump chamber by oil drain passage.When the end of impeller blade is moved to its retracted position, pump chamber
Pneumatic outlet opening it is very small or can even completely close.It is flat positioned at radial direction in the final compression stage
Flow openings in face are open so that staying in the oil in pump chamber can be discharged into oily receiving cavity, until final pressure
The contracting stage is fully completed.
In a kind of above-mentioned positive-displacement vacuum pump, the top end face of the blade head has the round platform of outwardly convex, institute
The impeller blade end stated is in the matched interior circular groove of round platform, the blade head bottom face with having at round platform opposite position
Arc-shaped is set, and is resisted against on pump chamber wall.
In a kind of above-mentioned positive-displacement vacuum pump, the oil drain passage is axially rectangle distribution, institute along impeller blade
It states an oil drain passage part to communicate with oily receiving cavity, the other end passes through impeller blade tail end and guide groove inner wall clearance fit.It improves
The utilization rate of oil drain passage.
Compared with prior art, this positive-displacement vacuum pump is designed with blade head in the end of impeller blade, by changing the pump housing
Interior structure, so as to fulfill with the different oil extraction mode of tradition, there is performance stabilization, low energy consumption.
Description of the drawings
Fig. 1 is the overall structure sectional view of this positive-displacement vacuum pump.
Fig. 2 is that having for this positive-displacement vacuum pump middle period head connects sectional view.
In figure, 1, pump case;2nd, pump chamber wall;3rd, pump chamber;4th, pneumatic inlet;5th, pneumatic outlet;6th, rotor;7th, guide groove;
8th, impeller blade;9th, blade head;10th, oil drain passage;11st, channel groove;12nd, oily receiving cavity;13rd, round platform;14th, interior circular groove.
Specific embodiment
It is specific embodiment of the utility model and with reference to attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As shown in Figure 1 and Figure 2, this positive-displacement vacuum pump, the pump chamber being distributed including pump case 1 and along 1 edge of pump case
It is gentle to be provided with the pneumatic inlet 4 being separated from each other circumferentially around pump chamber 3 is formed with for wall 2, the pump chamber wall 2 in the pump chamber 3
Dynamic outlet 5, which is characterized in that be provided in the pump chamber 3 in circular rotor 6, and there are two footpaths for setting on 6 body of rotor
To guide groove 7, be provided with impeller blade 8 between the guide groove 7 described in two, two axial end portions of the impeller blade 8 are equal
It is provided with the blade being supported on radially movablely on impeller blade 8 first 9, the row of being provided in described 8 end a side of impeller blade
Oily passage 10, the oil drain passage 10 is provided with channel groove 11, and slot opening is oriented in a circumferential direction and positioned at radially flat
In face, the oily receiving cavity 12 being connected with oil drain passage 10 is provided in 6 body of rotor.
It further describes in detail, the top end face of blade first 9 has the round platform 13 of outwardly convex, 8 end of impeller blade and 13 phase of round platform
Corresponding position has is resisted against pump chamber with the matched interior circular groove 14 of round platform 13, first 9 bottom face of blade in arc-shaped setting
On wall 2.
In order to improve the utilization rate of oil drain passage 10, oil drain passage 10 is rectangle distribution along impeller blade 8 is axial, and oil extraction is led to
10 part of road is communicated with oily receiving cavity 12, and the other end passes through 8 tail end of impeller blade and 7 inner wall clearance fit of guide groove.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Described specific embodiment can be done various modifications or additions or using similar by belonging to those skilled in the art
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Although be used more herein pump case 1, pump chamber wall 2, pump chamber 3, pneumatic inlet 4, pneumatic outlet 5, rotor 6,
The arts such as guide groove 7, impeller blade 8, blade are first 9, oil drain passage 10, channel groove 11, oily receiving cavity 12, round platform 13, interior circular groove 14
Language, but it does not preclude the possibility of using other terms.The use of these items is only for more easily describe and explain this
The essence of utility model;It is contrary to the spirit of the present invention to interpret them as any one of the additional limitations.
Claims (3)
1. a kind of positive-displacement vacuum pump, including pump case(1)And along pump case(1)The pump chamber wall of edge distribution(2), it is described
Pump chamber wall(2)Circumferentially around being formed with pump chamber(3), the pump chamber(3)Inside it is provided with the pneumatic inlet being separated from each other(4)It is gentle
Dynamic outlet(5), which is characterized in that the pump chamber(3)It is inside provided in circular rotor(6), and rotor(6)It is set on body
There are two the guide grooves of radial direction(7), the guide groove described in two(7)Between be provided with impeller blade(8), the impeller blade(8)'s
Two axial end portions are both provided with and are supported on impeller blade radially movablely(8)On blade head(9), the impeller blade
(8)Oil drain passage is provided in a side of end(10), the oil drain passage(10)It is provided with channel groove(11), and groove is opened
Mouth is oriented in a circumferential direction and in sagittal plane, the rotor(6)It is provided with and oil drain passage in vivo(10)It is connected
Oily receiving cavity(12).
A kind of 2. positive-displacement vacuum pump according to claim 1, which is characterized in that the blade head(9)Top end face
Round platform with outwardly convex(13), the impeller blade(8)End and round platform(13)Have at opposite position and round platform
(13)Matched interior circular groove(14), the blade head(9)Bottom face is set in arc-shaped, and is resisted against pump chamber wall(2)On.
A kind of 3. positive-displacement vacuum pump according to claim 1, which is characterized in that the oil drain passage(10)Along impeller
Piece(8)Axially it is rectangle distribution, the oil drain passage(10)A part and oily receiving cavity(12)It communicates, the other end passes through impeller
Piece(8)Tail end and guide groove(7)Inner wall clearance fit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201721462755.9U CN207437358U (en) | 2017-11-06 | 2017-11-06 | A kind of positive-displacement vacuum pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201721462755.9U CN207437358U (en) | 2017-11-06 | 2017-11-06 | A kind of positive-displacement vacuum pump |
Publications (1)
Publication Number | Publication Date |
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CN207437358U true CN207437358U (en) | 2018-06-01 |
Family
ID=62291966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201721462755.9U Expired - Fee Related CN207437358U (en) | 2017-11-06 | 2017-11-06 | A kind of positive-displacement vacuum pump |
Country Status (1)
Country | Link |
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CN (1) | CN207437358U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107740764A (en) * | 2017-11-06 | 2018-02-27 | 温岭市挺威真空设备有限公司 | A kind of positive-displacement vacuum pump |
-
2017
- 2017-11-06 CN CN201721462755.9U patent/CN207437358U/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107740764A (en) * | 2017-11-06 | 2018-02-27 | 温岭市挺威真空设备有限公司 | A kind of positive-displacement vacuum pump |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180601 Termination date: 20191106 |