CN203822631U - Rotary vane type vacuum pump - Google Patents
Rotary vane type vacuum pump Download PDFInfo
- Publication number
- CN203822631U CN203822631U CN201420088234.1U CN201420088234U CN203822631U CN 203822631 U CN203822631 U CN 203822631U CN 201420088234 U CN201420088234 U CN 201420088234U CN 203822631 U CN203822631 U CN 203822631U
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- CN
- China
- Prior art keywords
- pump
- vacuum pump
- rotor
- gas
- rotary vane
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- Expired - Fee Related
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Abstract
The utility model relates to the technical field of vacuum pumps and particularly relates to a rotary vane type vacuum pump. The rotary vane type vacuum pump comprises a pump body with a pump cavity, wherein an air inlet passage and an air outlet passage are formed in the pump body; a rotor is eccentrically arranged inside the pump body; multiple slots are formed in the rotor; each slot is internally provided with a rotary vane; one end of each rotary vane is inserted into the slot, while the other end of the rotary vane extends out of the rotor and pushes against the inner wall of the pump body; the rotor is tangent to and pushes against the pump cavity; the air inlet of the air inlet passage is provided with a dust particle filtering net. By virtue of the dust particle filtering net, the solid particles inside a pumped container are prevented from entering the vacuum pump, so that the service life of the vacuum pump is prolonged.
Description
Technical field
The utility model relates to vacuum pump technology field, relates in particular to a kind of sliding vane rotary vacuum pump.
Background technique
Vacuum pump application is in technical fields such as petroleum refining, chemical industry, electric power, in the situation that to degree of vacuum, requirement is not very high, generally all adopt oil-sealed rotary pump to vacuumize, in oil-sealed rotary pump, using more is sliding vane rotary vacuum pump, as shown in Figure 1, sliding vane rotary vacuum pump mainly consists of the pump housing with pump chamber, rotor, on rotor, be provided with the blade 1 that can move radially, rotor eccentricity is installed in pump chamber, the upper end of rotor and pump chamber are tangent and conflict, and the inlet hole of pump and air outlet hole are arranged at respectively the both sides of points of tangency.During sliding vane rotary vacuum pump work, blade is divided into breathing space A, compression volume B, exhaust space C by pump chamber; Three spaces constantly change, gas are drawn into by gas-entered passageway, and the discharge of exhaust passage, thereby complete, vacuumize action.
Traditional sliding vane rotary vacuum pump is in when design, conventionally can give tacit consent to that to be taken out container be clean, pure; And in use, some containers can exist solid-state grit, these grits, after entering vacuum pump, can have influence on its seal degree, and then have influence on it and vacuumize the upper limit; Finally have influence on the working life of sliding vane rotary vacuum pump.
Model utility content
The purpose of this utility model is to solve the deficiencies in the prior art, and a kind of sliding vane rotary vacuum pump is provided, and this sliding vane rotary vacuum pump is simple in structure, good seal performance and long service life.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of sliding vane rotary vacuum pump, comprise the pump housing with pump chamber, the pump housing is provided with gas-entered passageway and exhaust passage, in the pump housing, be provided with the rotor of eccentric setting, rotor is provided with a plurality of slots, is provided with blade in slot, slot is inserted in one end of blade, the other end of blade stretches out the inwall butt of rotor and the pump housing, the tangent and butt of rotor and pump chamber, and the suction port on described gas-entered passageway is provided with grit filter screen.
Further, described gas-entered passageway is provided with the anti-fuel tap that returns.
Further, the upper end of described pump chamber is provided with gas ballasting passage and gas ballast valve.
Further, the upper end of pump chamber is provided with exhaust passage, and the middle part of exhaust passage is provided with bloop and oil strainer, and bloop is positioned at the top of oil strainer, and the ingress of exhaust passage is provided with outlet valve.
Further, the inwall of pump chamber is provided with filler opening.
The beneficial effect that the utility model is obtained is: the utility model, by grit filter screen is set, stops the solid particle of being taken out internal tank to enter vacuum pump, extends the working life of vacuum pump.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art.
Fig. 2 is internal structure schematic diagram of the present utility model.
Reference character is:
1---blade 2---rotor 3---pump housing
4---gas-entered passageway 5---the anti-fuel tap 6 that returns---grit filter screens
7---suction port 8---relief opening A---exhaust spaces
B---compression volume C---breathing space 9---gas ballasting bonnet
10---bloop 11---oil strainer 12---outlet valves
13---exhaust passage 14---gas ballasting passage 15---filler openings.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further to book.
Embodiment: referring to Fig. 1 to Fig. 2.
A kind of sliding vane rotary vacuum pump, comprise the pump housing 3 with pump chamber, the pump housing 3 is provided with gas-entered passageway 4 and exhaust passage, the rotor 2 that is provided with eccentric setting in the pump housing 3, rotor 2 is provided with a plurality of slots, is provided with blade 1 in slot, slot is inserted in one end of blade 1, the other end of blade 1 stretches out the inwall butt of rotor 2 and the pump housing 3, and rotor 2 is tangent and butt with pump chamber, and the suction port 7 on described gas-entered passageway 4 is provided with grit filter screen.
Vacuum pump in use, needs to keep good sealing between blade and pump chamber arm; The general oil seal that adopts; If there is grit to enter into pump chamber, can have influence on the degree of vacuum of pump chamber, therefore, in the time of need to be in gas enters into vacuum pump, filter; And in prior art, usually ignored this point; And in the technical program, for the suction port at gas-entered passageway, be provided with grit filter screen 6; Grit filter screen 6 can adopt multiple filtration web frame.
Further, described gas-entered passageway 4 is provided with the anti-fuel tap 5 that returns.
Because the inside cavity of vacuum pump is by oil seal; Vacuum pump is after work, and the inner vacuum that forms, has the evaporation of part oil, after vacuum pump quits work, also forms vacuum in the container of finding time, and the oil vapor that at this moment has part turns back in container, thereby destroys the degree of vacuum of container.For avoiding the generation of this kind of situation, at gas-entered passageway, be provided with the anti-fuel tap 5 that returns, this prevents that returning fuel tap 5 can be one-way valve, only allows gas unidirectional to flow.
Further, the upper end of described pump chamber is provided with gas ballasting passage 14 and gas ballast valve.
Gas ballast valve device is set, can prevents the liquefaction of part water vapour, be blended in the oil in pump chamber, gas ballast valve can accelerate to extract steam out and be unlikely pollution oil.When if vacuum pump is only extracted permanent gases out, gas does not liquefy because of the increase of pressure, it doesn't matter pump oil deteriorated.But if do vacuum drying or extract humid air out with this pump, in gas, not only there is permanent gases so but also have water vapor, if when not extracting this part water vapour out with the pump of gas ballast valve, steam will be dissolved in oil because of liquefaction, the vacuum character of oil will be deteriorated, thereby reduced pumping speed and the degree of vacuum of pump.
Further, the upper end of pump chamber is provided with exhaust passage 13, and the middle part of exhaust passage 13 is provided with bloop 10 and oil strainer 11, and bloop 10 is positioned at the top of oil strainer 11, and the ingress of exhaust passage 13 is provided with outlet valve 12.
Oil strainer 11 is set, prevents that the oil vapor in pump chamber is discharged to befouling environment in environment, the general space of sealing comparatively of using of vacuum pump, therefore arranges effectively protection of the environment of oil strainer 11.Vacuum pump is when work, and the very most of collision from gas of noise, arranges bloop, can reduce the collision of gas, reduces noise.Outlet valve 12 is set, and after vacuum pump quits work, outlet valve 12 is closed, thereby preventing that gas is counter fills with.
Further, the inwall of pump chamber is provided with filler opening 15.
Vacuum pump is when work, and its internal lubrication oil, can, along with use, reduce gradually; And the pump chamber of vacuum pump generally adopts oil sealing, therefore need the regular makeup oil of carrying out; In the technical program, filler opening 15 is set on the inwall of pump chamber, can conveniently to pump chamber, refuels, easy to use, maintain the tightness of pump chamber.
Below be only the application's preferred embodiment, equivalent technical solutions on this basis still falls into application protection domain.
Claims (5)
1. a sliding vane rotary vacuum pump, comprise the pump housing with pump chamber, the pump housing is provided with gas-entered passageway and exhaust passage, in the pump housing, be provided with the rotor of eccentric setting, rotor is provided with a plurality of slots, is provided with blade in slot, slot is inserted in one end of blade, the other end of blade stretches out the inwall butt of rotor and the pump housing, and the tangent and butt of rotor and pump chamber, is characterized in that: the suction port on described gas-entered passageway is provided with grit filter screen.
2. a kind of sliding vane rotary vacuum pump according to claim 1, is characterized in that: described gas-entered passageway is provided with the anti-fuel tap that returns.
3. a kind of sliding vane rotary vacuum pump according to claim 2, is characterized in that: the upper end of described pump chamber is provided with gas ballasting passage and gas ballast valve.
4. a kind of sliding vane rotary vacuum pump according to claim 3, is characterized in that: the upper end of pump chamber is provided with exhaust passage, and the middle part of exhaust passage is provided with bloop and oil strainer, and bloop is positioned at the top of oil strainer, and the ingress of exhaust passage is provided with outlet valve.
5. a kind of sliding vane rotary vacuum pump according to claim 4, is characterized in that: the inwall of pump chamber is provided with filler opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420088234.1U CN203822631U (en) | 2014-02-28 | 2014-02-28 | Rotary vane type vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420088234.1U CN203822631U (en) | 2014-02-28 | 2014-02-28 | Rotary vane type vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203822631U true CN203822631U (en) | 2014-09-10 |
Family
ID=51478140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420088234.1U Expired - Fee Related CN203822631U (en) | 2014-02-28 | 2014-02-28 | Rotary vane type vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203822631U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257541A (en) * | 2015-10-20 | 2016-01-20 | 芜湖环球汽车配件有限公司 | Vacuum pump |
| CN109915377A (en) * | 2019-04-16 | 2019-06-21 | 成都中科唯实仪器有限责任公司 | A kind of novel two stage rotary-vane vaccum pump |
-
2014
- 2014-02-28 CN CN201420088234.1U patent/CN203822631U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257541A (en) * | 2015-10-20 | 2016-01-20 | 芜湖环球汽车配件有限公司 | Vacuum pump |
| CN105257541B (en) * | 2015-10-20 | 2018-12-07 | 芜湖环球汽车配件有限公司 | A kind of vacuum pump |
| CN109915377A (en) * | 2019-04-16 | 2019-06-21 | 成都中科唯实仪器有限责任公司 | A kind of novel two stage rotary-vane vaccum pump |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20190228 |