CN204961296U - Vacuum pump - Google Patents
Vacuum pump Download PDFInfo
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- CN204961296U CN204961296U CN201520732039.2U CN201520732039U CN204961296U CN 204961296 U CN204961296 U CN 204961296U CN 201520732039 U CN201520732039 U CN 201520732039U CN 204961296 U CN204961296 U CN 204961296U
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- rotor
- negative pressure
- pressure cavity
- protective layer
- vacuum pump
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Abstract
The utility model relates to a vacuum pump, including the pump case, be equipped with the air intake valve on pump case one side, the opposite side is equipped with drain tap, the inside one side of pump case is equipped with first negative pressure cavity, and the opposite side is equipped with the second negative pressure cavity, be equipped with the exhaust passage between first negative pressure cavity and the second negative pressure cavity, the inside the first rotor that is equipped with of first negative pressure cavity, the inside the second rotor that is equipped with of second negative pressure cavity, the first rotor, the last vortex sheet groove that is equipped with respectively of the second rotor, each vortex sheet inslot portion is equipped with the vortex sheet, be equipped with first protective layer on each vortex sheet lateral wall, be equipped with the second protective layer on first negative pressure cavity, the second negative pressure cavity inside wall. The utility model discloses well the first rotor, the second rotor symmetrical arrangement can ensure the stability in the vacuum pump motion process, and first protective layer, second protective layer can protect vortex sheet, negative pressure cavity lateral wall to avoid being cavitated, wearing and tearing respectively simultaneously, increase of service life, and the practicality is good.
Description
Technical field
The utility model relates to field of mechanical technique, particularly relates to a kind of vacuum pump.
Background technique
Vacuum pump refers to and utilizes machinery, physics, chemistry or physicochemical method to be bled and the device or the equipment that obtain vacuum to taking out container.Popular, vacuum pump is the device improving, produce and maintain vacuum by various method in a certain enclosed space.By the working principle of vacuum pump, vacuum pump can be divided into two types substantially, i.e. gas trapping pump and gas transmission pump.It is widely used in the industries such as metallurgy, chemical industry, food, electronics plated film.
Conventional vacuum pump comprises dry screw vacuum pump, water ring pump, reciprocating pump, slide valve pump, sliding vane rotary pump, Roots pump and diffusion pump etc., and these pumps are requisite main force pump kinds in Chinese national economy every profession and trade application vacuum technology process.In recent years, along with China's sustain economic high speed development, vacuum pump associated downstream application industry keeps quick growth, and simultaneously under jointly the pulling of factor such as constantly to be expanded in vacuum pump application field, China's vacuum pump industry achieves and develops fast sustainedly and stably.
Existing sliding vane rotary pump is generally single-stage pump, the negative pressure gravitation produced is little, be difficult to the demand meeting people, and only have a rotor due to single-stage sliding vane rotary pump, the vibrations produced in running are larger, simultaneously easily there are cavitation erosion and wearing and tearing in the negative cavity sidewall of pump body, blade, causes working life short.
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of vacuum pump.
The utility model is achieved through the following technical solutions:
A kind of vacuum pump, comprise pump case, described pump case side is provided with air intake valve, opposite side is provided with drain tap, the inner side of described pump case is provided with the first negative cavity, opposite side is provided with described in the second negative cavity and is provided with exhaust passage between the first negative cavity and the second negative cavity, described first negative cavity inside is provided with the first rotor, described second negative cavity inside is provided with the second rotor, described the first rotor, second rotor is respectively equipped with blade groove, each blade groove inside described is provided with blade, each blade sidewall described is provided with the first protective layer, described first negative cavity, second negative cavity madial wall is provided with the second protective layer.
As optimal technical scheme of the present utility model, described the first rotor, the second rotor are arranged symmetrically.
As optimal technical scheme of the present utility model, described first protective layer covers on each blade sidewall, and thickness is 0.5mm ~ 1mm.
As optimal technical scheme of the present utility model, described second protective layer covers on the first negative cavity, the second negative cavity madial wall, and thickness is 1mm ~ 3mm.
Compared with prior art, the beneficial effects of the utility model are: the utility model structure is simple, reasonable in design, the utility model is by arranging the first rotor be arranged symmetrically with, second rotor, such vacuum pump is inner at the first rotor, two-stage pressurization can be realized under bitrochanteric effect, increase negative pressure gravitation, meet industrial requirement, and the first rotor, second rotor is arranged symmetrically with the stability can guaranteed in vacuum pump movement process, first protective layer simultaneously, second protective layer can protect blade respectively, negative cavity sidewall is avoided being cavitated, wearing and tearing, increase the service life, practicability is good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1. pump case; 101. first negative cavities; 102. second negative cavities; 103 exhaust passages; 2. air intake valve; 3. drain tap; 4. the first rotor; 401. blade grooves; 5. the second rotor; 6. blade; 7. the first protective layer; 8. the second protective layer.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, Fig. 1 is structural representation of the present utility model.
A kind of vacuum pump, comprise pump case 1, described pump case 1 side is provided with air intake valve 2, opposite side is provided with drain tap 3, the described inner side of pump case 1 is provided with the first negative cavity 101, opposite side is provided with the second negative cavity 102, exhaust passage 103 is provided with between described first negative cavity 101 and the second negative cavity 102, described first negative cavity 101 inside is provided with the first rotor 4, described second negative cavity 102 inside is provided with the second rotor 5, wherein said the first rotor 4, second rotor 5 is arranged symmetrically, and can improve the operation stability of vacuum pump like this.Described the first rotor 4, second rotor 5 is respectively equipped with blade groove 401; each blade groove 401 inside described is provided with blade 6; each blade 6 sidewall described is provided with the first protective layer 7; wherein said first protective layer 7 covers on each blade 6 sidewall; and thickness is 0.5mm ~ 1mm; the surface of blade 6 can be protected like this, extend working time.
Described first negative cavity 101, second negative cavity 102 madial wall is provided with the second protective layer 8, and wherein said second protective layer 8 covers on the first negative cavity 101, second negative cavity 102 madial wall, and thickness is 1mm ~ 3mm.Such vacuum pump inside can realize two-stage pressurization under the effect of the first rotor 4, second rotor 5; increase negative pressure gravitation; meet industrial requirement; and the first rotor 4, second rotor 5 is arranged symmetrically with the stability can guaranteed in vacuum pump movement process; simultaneously the first protective layer 7, second protective layer 8 can protect blade 6 respectively, negative cavity sidewall avoids being cavitated, wearing and tearing; increase the service life, practicability is good.
The foregoing is only preferred embodiment of the present utility model, in order to restriction, this is not practical, all do within spirit of the present utility model and principle any amendment, equivalently to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a vacuum pump, comprise pump case (1), described pump case (1) side is provided with air intake valve (2), opposite side is provided with drain tap (3), described pump case (1) inner side is provided with the first negative cavity (101), opposite side is provided with the second negative cavity (102), exhaust passage (103) is provided with between described first negative cavity (101) and the second negative cavity (102), it is characterized in that: described first negative cavity (101) inside is provided with the first rotor (4), described second negative cavity (102) inside is provided with the second rotor (5), described the first rotor (4), second rotor (5) is respectively equipped with blade groove (401), each blade groove (401) inside described is provided with blade (6), described each blade (6) sidewall is provided with the first protective layer (7), described first negative cavity (101), second negative cavity (102) madial wall is provided with the second protective layer (8).
2. a kind of vacuum pump according to claim 1, is characterized in that: described the first rotor (4), the second rotor (5) are arranged symmetrically.
3. a kind of vacuum pump according to claim 1, is characterized in that: described first protective layer (7) covers on each blade (6) sidewall, and thickness is 0.5mm ~ 1mm.
4. a kind of vacuum pump according to claim 1, is characterized in that: described second protective layer (8) covers on the first negative cavity (101), the second negative cavity (102) madial wall, and thickness is 1mm ~ 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520732039.2U CN204961296U (en) | 2015-09-21 | 2015-09-21 | Vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520732039.2U CN204961296U (en) | 2015-09-21 | 2015-09-21 | Vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204961296U true CN204961296U (en) | 2016-01-13 |
Family
ID=55056366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520732039.2U Active CN204961296U (en) | 2015-09-21 | 2015-09-21 | Vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204961296U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476975A (en) * | 2017-07-27 | 2017-12-15 | 何国苗 | A kind of road sweeper twin-tub circular suction type wall blower fan |
| WO2019019933A1 (en) * | 2017-07-27 | 2019-01-31 | 湖北国苗特种车辆制造有限公司 | Double-cylinder circulating suction fan |
-
2015
- 2015-09-21 CN CN201520732039.2U patent/CN204961296U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476975A (en) * | 2017-07-27 | 2017-12-15 | 何国苗 | A kind of road sweeper twin-tub circular suction type wall blower fan |
| WO2019019933A1 (en) * | 2017-07-27 | 2019-01-31 | 湖北国苗特种车辆制造有限公司 | Double-cylinder circulating suction fan |
| CN107476975B (en) * | 2017-07-27 | 2021-06-29 | 湖北国苗特种车辆制造有限公司 | Double-cylinder circulating suction type fan of road sweeper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |