CN205135997U - Rotary -vane vacuum pump - Google Patents
Rotary -vane vacuum pump Download PDFInfo
- Publication number
- CN205135997U CN205135997U CN201520800291.2U CN201520800291U CN205135997U CN 205135997 U CN205135997 U CN 205135997U CN 201520800291 U CN201520800291 U CN 201520800291U CN 205135997 U CN205135997 U CN 205135997U
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- China
- Prior art keywords
- pump
- rotary
- eccentric shaft
- fuel tank
- pump housing
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Abstract
The utility model discloses a rotary -vane vacuum pump, including oil tank, the pump body, eccentric shaft and rotor, the oil tank is established on the pump body, oil tank and pump body fixed connection, be provided with intake pipe, discharge filter and clamp plate on the oil tank, be provided with the filter screen in the intake pipe, intake pipe and pump body intercommunication, intake pipe and discharge filter are held with the clamp plate card and are connected, clamp plate and oil tank fixed connection, oil tank one side is provided with oil pointer and oil drain plug screw, oil drain plug screw and oil tank threaded connection, the oil tank bottom row of being provided with gas valve piece, it is provided with the exhaust passage to arrange the gas valve piece below, the eccentric shaft is established in the pump body, the rotor is established on the eccentric shaft, it is sealed to be provided with bearing and axle head between the eccentric shaft and the pump body, the rotor is established on the eccentric shaft, and this rotary -vane vacuum pump operation is stable, and the noise is little, compact structure, and long service life, it is sealed effectual.
Description
Technical field
The utility model relates to a kind of pump housing technical field, particularly relates to a kind of rotary-vane vaccum pump.
Background technique
Rotor and the stator stationary plane of eccentric installation in the pump of rotary-vane vaccum pump are tangent, two (or more) blade slides (be generally radial) and contact with stator inner wall in rotor, is divided into by pump chamber a kind of rotary volume-variable of several variable volume to amass vacuum pump.Usually, the gap oil between blade and pump chamber is used as sealing, so sliding vane rotary vacuum pump is generally oil seal type oil-sealed rotary pump.
Rotary-vane vaccum pump can extract the dry gas in seal container, if with gas ballasting device, can also extract a certain amount of condensable gas.But it is unsuitable for extracting containing oxygen too high, mordant to metal, can chemical reaction and the gas containing particle dust to pump oil.Rotary-vane vaccum pump is one of pumping equipment the most basic in vacuum technique.Sliding vane rotary pump mostly is middle-size and small-size pump.Rotary-vane vaccum pump has single-stage and twin-stage two kinds.So-called twin-stage is exactly structurally be together in series by two single-stage pumps.General twin-stage of making, to obtain higher degree of vacuum more.The pumping speed of sliding vane rotary pump and the relationship specifications of inlet pressure as follows: be 1333Pa, 1.33Pa and 1.33 × 10-1(Pa at inlet pressure) under, its pumping speed value must not distinguish lower than pump nominal displacement 95%, 50% and 20%.Sliding vane rotary pump is primarily of compositions such as the pump housing, rotor, blade, end cap, springs.In the chamber of sliding vane rotary pump, install a rotor prejudicially, rotor outer circle and pump chamber interior surface tangent (the two has very little gap), rotor is built with two blades of band spring.During rotation, the tension force by centrifugal force and spring makes the inwall of blade top and pump chamber keep in touch, and rotor rotarily drives blade and slides along pump chamber inwall.
What liquid-ring vacuum pump was conventional has water ring vaccum pump and Nahsi pump.It is mainly used in intake-gas, more conventional when aspirating corrosive gas especially.Appropriate water is contained in as working solution in the pump housing.When impeller clockwise direction rotates, water is thrown to surrounding by impeller, and due to the effect of centrifugal force, water forms the closed circle being similar to equal thickness that is decided by pump chamber shape.The lower part internal surface of water ring is lucky and impeller hub is tangent, and the upper inside surface of water ring just contacts with blade tip (in fact blade has certain insertion depth in water ring).Now impeller hub and water ring form a crescent-shaped space between this, and this space is divided into several loculuses equal with lobe numbers by impeller.If with the bottom zero degree of impeller for starting point, so impeller before rotation when 180 degree the volume of loculus change from small to big, and communicate with the intakeport on end face, now gas is inhaled into, when air-breathing at the end loculus then completely cut off with intakeport; When impeller continues to rotate, loculus from large to small, makes gas be compressed; When loculus communicates with relief opening, gas is more discharged outside pump.Water ring pump is that therefore it belongs to variable-capacity vacuum pump by the change of pump chamber to realize air-breathing, compression and exhaust.The action principle of Nahsi pump is the same with water ring vaccum pump, but because impeller rotates in ellipse housing, between the pendular ring and rachis of long axis direction, form two crescent-shaped spaces, during vane rotary just repeatedly near and leave pendular ring, space also just repeatedly reduces and expands.Like this, just can constantly liquid be extruded and suck.
Sliding valve vacuum pump working principle: the rotary vacuum pump of another kind of allusion quotation shape is sliding valve vacuum pump, the rotor of the in-built bias of pump case.Rotor there are some grooves, in groove, have the slide plate that can slide.The slide plate of rotor rotatably in groove stretches out to surrounding, does not contact with pump case.Gas sucks in the side of the space enlargement that slide plate and pump case surround, and discharges in its side of the two reduced space surrounded.The low pressure that sliding vane vacuum pump produces can reach 0.06Pa.Comparing sliding vane rotary vacuum pump runs more stable, and serviceability is stronger.Liquid-jet vacuum pump:
The principle that kinetic energy when jet pump is utilization flowing and static energy transform mutually is inhaled and is sent fluid, and working liquid body can be steam, also can be liquid.Jet pump is connected by main jet with Diffuser and mixing chamber and forms.Main jet and these two parts of Diffuser constitute the special airflow line of a section variation.Working steam under high pressure sprays from nozzle with very high speed, and spraying in kind, air-flow can change static energy into kinetic energy by nozzle.Pressure difference between working steam pressure and delivery side of pump pressure, makes working steam flow in the duct.
Current existing rotary-vane vaccum pump complex structure, operation stability is lower, and run noise comparatively large, working life is not long.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of stable, and noise is little, compact structure, long service life, the rotary-vane vaccum pump of good sealing effect.
For solving the problem, the utility model adopts following technological scheme:
A kind of rotary-vane vaccum pump, comprise fuel tank, the pump housing, eccentric shaft and rotor, described fuel tank is located on the pump housing, described fuel tank is fixedly connected with the pump housing, described fuel tank is provided with suction tude, discharge filter and pressing plate, filter screen is provided with in described suction tude, described suction tude is communicated with the pump housing, described suction tude and discharge filter hold with pressing plate and are connected, described pressing plate is fixedly connected with fuel tank, described fuel tank side is provided with oil ga(u)ge and purge cock, described purge cock is threaded with fuel tank, described tank bottoms is provided with exhaust valve plate, exhaust passage is provided with below described exhaust valve plate, described eccentric shaft is located in the pump housing, described rotor is located on eccentric shaft, bearing and shaft end seal is provided with between described eccentric shaft and the pump housing, described rotor holds with eccentric shaft and is connected, blade is provided with in described rotor, described blade and rotor are slidably connected, spring is provided with in described blade, described blade arranged outside has stator, described stator welds with the pump housing, described eccentric shaft side is provided with belt pulley, described belt pulley and eccentric shaft are in transmission connection.
Further, be provided with base below the described pump housing, holding structure is stable.
Further, described base is fixedly connected with the pump housing, and holding structure is firm.
Further, described belt pulley arranged outside has dust-proof cover, can reduce belt pulley and run noise, prevent dust convenient attachment from safeguarding.
Further, described dust-proof cover is fixedly connected with base, and holding structure is stablized.
Further, in described fuel tank, be provided with pump oil, there is good sealing effect.
Further, described pump housing arranged outside has stiffening rib, keeps pump body structure intensity high, increases the service life.
Further, described stiffening rib, in equidistant vertically distribution, keeps stress equalization.
The beneficial effects of the utility model are: the fuel tank of setting has good sealing effect, eccentric shaft can move by the blade on rotor driven on the inwall of stator, air is entered from suction tude, it is stable mobile that spring can keep blade to realize, filter screen can filtered air, oil ga(u)ge can observe the pump oil content in fuel tank, purge cock can pump oil content in regulating oil tank, gas can be discharged from discharge filter through fuel tank by exhaust valve plate, prevent pump oil from revealing, bearing can keep eccentric shaft stable and reliable operation, shaft end seal can keep good sealing effect, belt pulley can keep transmission efficiency high, keep noise little.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural drawing of a kind of rotary-vane vaccum pump of the present utility model.
Fig. 2 is the left TV structure figure of a kind of rotary-vane vaccum pump of the present utility model.
Embodiment
Consult shown in Fig. 1 and Fig. 2, a kind of rotary-vane vaccum pump, comprise fuel tank 1, the pump housing 2, eccentric shaft 3 and rotor 4, described fuel tank 1 is located on the pump housing 2, described fuel tank 1 is fixedly connected with the pump housing 2, described fuel tank 1 is provided with suction tude 5, discharge filter 6 and pressing plate 7, filter screen 8 is provided with in described suction tude 5, described suction tude 5 is communicated with the pump housing 2, described suction tude 5 and discharge filter 6 hold with pressing plate 7 and are connected, described pressing plate 7 is fixedly connected with fuel tank 1, described fuel tank 1 side is provided with oil ga(u)ge 9 and purge cock 10, described purge cock 10 is threaded with fuel tank 1, exhaust valve plate 11 is provided with bottom described fuel tank 1, exhaust passage 12 is provided with below described exhaust valve plate 11, described eccentric shaft 3 is located in the pump housing 2, described rotor 4 is located on eccentric shaft 3, bearing 13 and shaft end seal 14 is provided with between described eccentric shaft 3 and the pump housing 2, described rotor 4 holds with eccentric shaft 3 and is connected, blade 15 is provided with in described rotor 4, described blade 15 is slidably connected with rotor 4, spring 16 is provided with in described blade 15, described blade 15 arranged outside has stator 17, described stator 17 welds with the pump housing 2, described eccentric shaft 3 side is provided with belt pulley 18, described belt pulley 18 is in transmission connection with eccentric shaft 3.
Base 19 is provided with below the described pump housing 2.
Described base 19 is fixedly connected with the pump housing 2.
Described belt pulley 18 arranged outside has dust-proof cover 20.
Described dust-proof cover 20 is fixedly connected with base 19.
Pump oil 21 is provided with in described fuel tank 1.
The described pump housing 2 arranged outside has stiffening rib 22.
Described stiffening rib 22 is in equidistant vertically distribution.
In use, belt pulley 18 drives eccentric shaft 3 to move on the inwall of stator 17 by the blade 15 on rotor driven 4, and air is entered from suction tude 5, and the cavity in stator 17 is discharged from exhaust valve plate 11, finally discharges from discharge filter 6.
The beneficial effects of the utility model are: the fuel tank of setting has good sealing effect, eccentric shaft can move by the blade on rotor driven on the inwall of stator, air is entered from suction tude, it is stable mobile that spring can keep blade to realize, filter screen can filtered air, oil ga(u)ge can observe the pump oil content in fuel tank, purge cock can pump oil content in regulating oil tank, gas can be discharged from discharge filter through fuel tank by exhaust valve plate, prevent pump oil from revealing, bearing can keep eccentric shaft stable and reliable operation, shaft end seal can keep good sealing effect, belt pulley can keep transmission efficiency high, keep noise little.
The above; be only embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; any change of expecting without creative work or replacement; all should be encompassed within protection domain of the present utility model; therefore, the protection domain that protection domain of the present utility model should limit with claims is as the criterion.
Claims (8)
1. a rotary-vane vaccum pump, it is characterized in that: comprise fuel tank, the pump housing, eccentric shaft and rotor, described fuel tank is located on the pump housing, described fuel tank is fixedly connected with the pump housing, described fuel tank is provided with suction tude, discharge filter and pressing plate, filter screen is provided with in described suction tude, described suction tude is communicated with the pump housing, described suction tude and discharge filter hold with pressing plate and are connected, described pressing plate is fixedly connected with fuel tank, described fuel tank side is provided with oil ga(u)ge and purge cock, described purge cock is threaded with fuel tank, described tank bottoms is provided with exhaust valve plate, exhaust passage is provided with below described exhaust valve plate, described eccentric shaft is located in the pump housing, described rotor is located on eccentric shaft, bearing and shaft end seal is provided with between described eccentric shaft and the pump housing, described rotor holds with eccentric shaft and is connected, blade is provided with in described rotor, described blade and rotor are slidably connected, spring is provided with in described blade, described blade arranged outside has stator, described stator welds with the pump housing, described eccentric shaft side is provided with belt pulley, described belt pulley and eccentric shaft are in transmission connection.
2. rotary-vane vaccum pump as claimed in claim 1, is characterized in that: be provided with base below the described pump housing.
3. rotary-vane vaccum pump as claimed in claim 2, is characterized in that: described base is fixedly connected with the pump housing.
4. rotary-vane vaccum pump as claimed in claim 3, is characterized in that: described belt pulley arranged outside has dust-proof cover.
5. rotary-vane vaccum pump as claimed in claim 4, is characterized in that: described dust-proof cover is fixedly connected with base.
6. rotary-vane vaccum pump as claimed in claim 5, is characterized in that: be provided with pump oil in described fuel tank.
7. rotary-vane vaccum pump as claimed in claim 6, is characterized in that: described pump housing arranged outside has stiffening rib.
8. rotary-vane vaccum pump as claimed in claim 7, is characterized in that: described stiffening rib is in equidistant vertically distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520800291.2U CN205135997U (en) | 2015-10-13 | 2015-10-13 | Rotary -vane vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520800291.2U CN205135997U (en) | 2015-10-13 | 2015-10-13 | Rotary -vane vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205135997U true CN205135997U (en) | 2016-04-06 |
Family
ID=55621796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520800291.2U Expired - Fee Related CN205135997U (en) | 2015-10-13 | 2015-10-13 | Rotary -vane vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205135997U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298839A (en) * | 2015-10-13 | 2016-02-03 | 芜湖环球汽车配件有限公司 | Rotary-vane vacuum pump |
| CN106194731A (en) * | 2016-08-03 | 2016-12-07 | 广西科晟达机械制造有限公司 | A kind of vehicle-mounted vacuum pump |
-
2015
- 2015-10-13 CN CN201520800291.2U patent/CN205135997U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298839A (en) * | 2015-10-13 | 2016-02-03 | 芜湖环球汽车配件有限公司 | Rotary-vane vacuum pump |
| CN106194731A (en) * | 2016-08-03 | 2016-12-07 | 广西科晟达机械制造有限公司 | A kind of vehicle-mounted vacuum 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 |
Granted publication date: 20160406 Termination date: 20161013 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |