CN203948297U - A kind of sliding vane rotary vacuum pump - Google Patents
A kind of sliding vane rotary vacuum pump Download PDFInfo
- Publication number
- CN203948297U CN203948297U CN201420088424.3U CN201420088424U CN203948297U CN 203948297 U CN203948297 U CN 203948297U CN 201420088424 U CN201420088424 U CN 201420088424U CN 203948297 U CN203948297 U CN 203948297U
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- oil
- sliding vane
- rotary vacuum
- vane rotary
- vacuum pump
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Abstract
The utility model relates to vacuum technique field, relates in particular to a kind of sliding vane rotary vacuum pump.The utility model comprises the oil box and the gas filtration casing that are positioned at the pump housing on right side and are positioned at left side, in the described pump housing, be provided with pump chamber, in pump chamber, be provided with rotor and multiple blade, oil box is connected with the pump housing, and described gas filtration casing is arranged at the top of oil box; Described oil box is provided with oil strainer, is provided with and returns oil-piping, and return oil-piping and be provided with valve between oil strainer and pump chamber.The utility model adopts by oil strainer being set and returning oil-piping, makes pump chamber inside can obtain certain oil that returns, and ensures its sealing effect, long service life.
Description
Technical field
The utility model relates to vacuum technique field, relates in particular to a kind of sliding vane rotary vacuum pump.
Background technique
Vacuum pump is widely used in the chemical industry such as medicine, oil, in order to obtain good vacuum environment, people have developed multiple vacuum pump, as mechanical pump, molecular pump, oil diffusion pump etc., at present in processing process, requiring in degree of vacuum is not in extra high situation, applying maximum is mechanical pump, sliding vane rotary vacuum pump the most commonly in mechanical pump, sliding vane rotary vacuum pump in use, there will be the degree of vacuum of pump body higher, has reduced the saturation vapour pressure of lubricant oil, inner lubricant oil is volatilization constantly, is drawn out of in company with gas; But sealing between the sealing of sliding vane rotary vacuum pump inside, especially blade and the pump housing is to rely on lubricant oil to seal; In constantly volatilization situation of lubricant oil, can cause the sealing of vacuum pump inside poor, pumping speed reduces gradually, need to safeguard frequently, makes troubles to use.
Model utility content
The purpose of this utility model is to solve existing blade mechanical pump in the time bleeding, the volatilization of internal lubrication oil causes internal vacuum poor, needs the problem of frequent maintenance, and a kind of sliding vane rotary vacuum pump is provided, this sliding vane rotary vacuum pump can carry out supply, long service life to the lubricant oil of pump chamber inside.
The technical solution adopted in the utility model is:
A kind of sliding vane rotary vacuum pump, comprise the oil box and the gas filtration casing that are positioned at the pump housing on right side and are positioned at left side, in the described pump housing, be provided with pump chamber, in pump chamber, be provided with rotor and multiple blade, oil box is connected with the pump housing, and described gas filtration casing is arranged at the top of oil box; Described oil box is provided with oil strainer, is provided with and returns oil-piping, and return oil-piping and be provided with valve between oil strainer and pump chamber.
Further, in described gas filtration casing, be provided with pneumatic filter, pneumatic filter inside is provided with deaerator; The base plate of gas filtration casing is provided with the depressed part for accommodating lubricant oil, depressed part is provided with oil discharge passage, the upper end of the described pump housing is provided with gas-entered passageway, the side of the upper end of the pump housing is also provided with the upper oil inlet passage communicating with gas-entered passageway, between upper oil discharge passage and upper oil inlet passage, is provided with pipeline.
Further, described gas-entered passageway is provided with check valve, and check valve is positioned at the top of oil inlet passage.
Further, described check valve comprises spring and diaphragm, and described gas-entered passageway comprises conical section, the cross-section area of conical section is up-small and down-big, described diaphragm is resisted against side the sealing of conical section, the upper end of spring and diaphragm butt, the lower end of spring and pump housing butt.
Further, described sliding vane rotary vacuum pump also comprises cooling system, and described cooling system comprises filtration barrel body and airflow line, and the described pump housing is provided with the inlet hole being connected with pump chamber, one end of airflow line is connected with filtration barrel body, and the other end of airflow line is inserted into pore.
Further, described filtration barrel body comprises the cylindrical shell of upper end open, and cylindrical shell upper end is connected with lid, and cylindrical shell lower end offers the air outlet being connected with airflow line; The side of cylindrical shell is provided with inlet hole, and the inside of cylindrical shell is provided with the filter core of ring-type.
Again further, be provided with three blades in described pump chamber, blade is evenly arranged at the side of rotor, pump chamber is provided with the inlet hole and the air outlet hole that communicate with air inlet, inlet hole is arranged at the upper end of pump chamber, and air outlet hole is arranged at the left end of pump chamber, and described inlet hole is positioned at the lower end of pump chamber.
Further, the upper end of described gas-entered passageway is also provided with filter layer.
Further, the bottom of the described pump housing and oil box is equipped with damping cushion.
Further, described depressed part is provided with the drainback passage communicating with oil box, and drainback passage is provided with scavenger valve.
The beneficial effect that the utility model is obtained is: the utility model adopts by oil strainer being set and returning oil-piping, makes pump chamber inside can obtain certain oil that returns, and ensures its sealing effect, long service life.
Brief description of the drawings
Fig. 1 is a kind of sectional structure schematic diagram of the present utility model.
Reference character is:
1---the upper pipeline of damping cushion 2---oil box 3---
4---scavenger valve 5---pneumatic filter 6---deaerators
7---gas filtration casing 8---filtration barrel body 9---filter layers
10---check valve 11---rotor 12---cooling fins
13---pump housing 14---blade 15---returns oil-piping
16---airflow line 17---oil strainer 18---pump chambers
19---base plate 20---depressed part.
Embodiment
Below in conjunction with accompanying drawing 1 and embodiment, the utility model is described further.
Embodiment: referring to Fig. 1.
A kind of sliding vane rotary vacuum pump, comprise the pump housing 13 that is positioned at right side and oil box 2 and the gas filtration casing 7 that is positioned at left side, in the described pump housing 13, be provided with pump chamber 18, in pump chamber 18, be provided with rotor 11 and multiple blade 14, oil box 2 is connected with the pump housing 13, and described gas filtration casing 7 is arranged at the top of oil box 2; Described oil box 2 is provided with oil strainer 17, is provided with and returns oil-piping 15, and return oil-piping 15 and be provided with valve (not shown in FIG.) between oil strainer 17 and pump chamber 18.
In the time of degree of vacuum variation in sliding vane rotary vacuum pump, can be by opening valve, make lubricant oil in oil box 2 by returning oil-piping 15 to pump chamber 18 delivered inside lubricant oil, thereby supplement the lubricant oil of pump chamber 18 inside.In the time that the degree of vacuum of pump chamber 18 inside is better, just can throttle down.
Further, in described gas filtration casing 7, be provided with pneumatic filter 5, pneumatic filter 5 inside are provided with deaerator 6; The base plate 19 of gas filtration casing 7 is provided with the depressed part 20 for accommodating lubricant oil, depressed part 20 is provided with oil discharge passage, the upper end of the described pump housing 13 is provided with gas-entered passageway, the side of the upper end of the pump housing 13 is also provided with the upper oil inlet passage communicating with gas-entered passageway, between upper oil discharge passage and upper oil inlet passage, is provided with pipeline 3.
Sliding vane rotary vacuum pump is in the time of work, the gas of extracting out enters into gas filtration case through fuel tank, because lubricant oil forms oil vapor in the interior evaporation of pump chamber 18, therefore oil vapor and other gases together enter into gas filtration case, in gas filtration case, oil vapor is condensed into liquid lubricant oil and gathers depressed part 20; Secondly vacuum pump is in the time of work, and the air pressure of gas-entered passageway inside is lower, therefore can be extracted in pump chamber 18 being condensed into liquid lubricant oil, supplements the lubricant oil of pump chamber 18 inside.In order to allow gas enter gas filtration casing 7 from oil box 2, on base plate 19, multiple pores can be set.
Further, described gas-entered passageway is provided with check valve 10, and check valve 10 is positioned at the top of oil inlet passage.
Sliding vane rotary vacuum pump in the time starting working, on the one hand from being evacuated an internal air exhausting, on the other hand may be by upper pipeline 3 air inlets, in order to prevent that upper pipeline 3 from taking out anti-aeration body in container by admission line to quilt, therefore at gas-entered passageway, check valve 10 is set.And check valve 10 is arranged at the top of oil inlet passage.
Further, described check valve 10 comprises spring and diaphragm, and described gas-entered passageway comprises conical section, the cross-section area of conical section is up-small and down-big, described diaphragm is resisted against side the sealing of conical section, the upper end of spring and diaphragm butt, the lower end of spring and the pump housing 13 butts.
This check valve 10 is simple in structure, and when work, when the pressure of being taken out container is during higher than the pressure of pump chamber 18 inside, check valve 10 is opened.When the pressure of being taken out container is during lower than the pressure of pump chamber 18 inside, check valve 10 is closed.Certainly, can on upper pipeline 3, valve be set.Control and return the oily time from upper pipeline 3.
Further, described sliding vane rotary vacuum pump also comprises cooling system, and described cooling system comprises filtration barrel body 8 and airflow line 16, and the described pump housing 13 is provided with the inlet hole being connected with pump chamber 18, one end of airflow line 16 is connected with filtration barrel body 8, and the other end of airflow line 16 is inserted into pore.
Sliding vane rotary vacuum pump is in the time of work, and the temperature of rotor 11 can continue to rise.After rotor 11 temperature rises, can cause lubricant oil volatilization or seal failure, therefore need to keep rotor 11 temperature at a certain temperature; Arrange after cooling system, after sliding vane rotary vacuum pump work a period of time, its inside, in higher vacuum, now just can be introduced outside cool air in the pump housing 13 through filtration barrel body 8, carries out air-cooled to rotor 11.Cool air is extracted out by the pump housing 13 again, and cool air just can constantly enter in the pump housing 13, carries out cooling to rotor 11.In order to allow further pump chamber 18 cooling, be provided with in the side of the pump housing 13 for auxiliary cooling cooling fin 12.
Further, described filtration barrel body 8 comprises the cylindrical shell of upper end open, and cylindrical shell upper end is connected with lid, and cylindrical shell lower end offers the air outlet being connected with airflow line 16; The side of cylindrical shell is provided with inlet hole, and the inside of cylindrical shell is provided with the filter core of ring-type.
Filtration barrel body 8 is demountable structure.Inner filter core can be regular replacing, filter core can adopt the material of sponge.When work, gas enters from the side of cylindrical shell, after filter element filtering, enters air-flow path, then enters in pump chamber 18.
Again further, in described pump chamber 18, be provided with three blades, blade is evenly arranged at the side of rotor 11, pump chamber 18 is provided with the inlet hole and the air outlet hole that communicate with air inlet, inlet hole is arranged at the upper end of pump chamber 18, air outlet hole is arranged at the left end of pump chamber 18, and described inlet hole is positioned at the lower end of pump chamber 18.
Three blades are set, can play pump chamber 18 inner spaces are divided into breathing space, compression volume and exhaust space, three spaces constantly transform, when inlet hole design simultaneously, first be communicated with compression volume, be communicated with exhaust space afterwards, reach constantly to the interior supplements cold of pump chamber 18, cool air is discharged from the exhaust port of pump chamber 18 again.
Further, the upper end of described gas-entered passageway is also provided with filter layer 9.
Filter layer 9 is set, can prevents that dust or impurity that particle is larger from entering in pump chamber 18, prevents from damaging pump chamber 18.Filter layer 9 can adopt the structures such as filter screen.
Further, the bottom of the described pump housing 13 and oil box 2 is equipped with damping cushion 1.
Damping cushion 1 is set, can reduces the Oscillation Amplitude of whole sliding vane rotary vacuum pump.Play damping effect.Damping cushion 1 can adopt the good material of elasticity.As rubber shock-absorbing cushion block 1.
Further, described depressed part 20 is provided with the drainback passage communicating with oil box 2, and drainback passage is provided with scavenger valve 4.
When depressed part 20 fills more lubricant oil, and in the pump housing 13, do not lack lubricant oil; Can lubricant oil be back in oil box 2 by scavenger valve 4.
Below be only the application's preferred embodiment, equivalent technical solutions on this basis still falls into application protection domain.
Claims (10)
1. a sliding vane rotary vacuum pump, it is characterized in that: comprise the oil box and the gas filtration casing that are positioned at the pump housing on right side and are positioned at left side, in the described pump housing, be provided with pump chamber, in pump chamber, be provided with rotor and multiple blade, oil box is connected with the pump housing, and described gas filtration casing is arranged at the top of oil box; Described oil box is provided with oil strainer, is provided with and returns oil-piping, and return oil-piping and be provided with valve between oil strainer and pump chamber.
2. a kind of sliding vane rotary vacuum pump according to claim 1, is characterized in that: in described gas filtration casing, be provided with pneumatic filter, pneumatic filter inside is provided with deaerator; The base plate of gas filtration casing is provided with the depressed part for accommodating lubricant oil, depressed part is provided with oil discharge passage, the upper end of the described pump housing is provided with gas-entered passageway, the side of the upper end of the pump housing is also provided with the upper oil inlet passage communicating with gas-entered passageway, between upper oil discharge passage and upper oil inlet passage, is provided with pipeline.
3. a kind of sliding vane rotary vacuum pump according to claim 2, is characterized in that: described gas-entered passageway is provided with check valve, check valve is positioned at the top of oil inlet passage.
4. a kind of sliding vane rotary vacuum pump according to claim 3, it is characterized in that: described check valve comprises spring and diaphragm, described gas-entered passageway comprises conical section, the cross-section area of conical section is up-small and down-big, described diaphragm is resisted against side the sealing of conical section, the upper end of spring and diaphragm butt, the lower end of spring and pump housing butt.
5. a kind of sliding vane rotary vacuum pump according to claim 4, it is characterized in that: described sliding vane rotary vacuum pump also comprises cooling system, described cooling system comprises filtration barrel body and airflow line, the described pump housing is provided with the inlet hole being connected with pump chamber, one end of airflow line is connected with filtration barrel body, and the other end of airflow line is inserted into pore.
6. a kind of sliding vane rotary vacuum pump according to claim 5, is characterized in that: described filtration barrel body comprises the cylindrical shell of upper end open, cylindrical shell upper end is connected with lid, and cylindrical shell lower end offers the air outlet being connected with airflow line; The side of cylindrical shell is provided with inlet hole, and the inside of cylindrical shell is provided with the filter core of ring-type.
7. a kind of sliding vane rotary vacuum pump according to claim 6, it is characterized in that: in described pump chamber, be provided with three blades, blade is evenly arranged at the side of rotor, pump chamber is provided with the inlet hole and the air outlet hole that communicate with air inlet, inlet hole is arranged at the upper end of pump chamber, air outlet hole is arranged at the left end of pump chamber, and described inlet hole is positioned at the lower end of pump chamber.
8. a kind of sliding vane rotary vacuum pump according to claim 7, is characterized in that: the upper end of described gas-entered passageway is also provided with filter layer.
9. a kind of sliding vane rotary vacuum pump according to claim 8, is characterized in that: the bottom of the described pump housing and oil box is equipped with damping cushion.
10. a kind of sliding vane rotary vacuum pump according to claim 2, is characterized in that: described depressed part is provided with the drainback passage communicating with oil box, and drainback passage is provided with scavenger valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420088424.3U CN203948297U (en) | 2014-02-28 | 2014-02-28 | A kind of sliding vane rotary vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420088424.3U CN203948297U (en) | 2014-02-28 | 2014-02-28 | A kind of sliding vane rotary vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203948297U true CN203948297U (en) | 2014-11-19 |
Family
ID=51890334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420088424.3U Expired - Fee Related CN203948297U (en) | 2014-02-28 | 2014-02-28 | A kind of sliding vane rotary vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203948297U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201852A (en) * | 2015-10-21 | 2015-12-30 | 无锡惠山泵业有限公司 | Novel vehicle vacuum pump oil distributor |
| CN105840512A (en) * | 2016-05-27 | 2016-08-10 | 何文财 | Efficient heat dissipation type rotary-vane vacuum pump system |
| CN107842502A (en) * | 2017-12-06 | 2018-03-27 | 温岭市石桥真空机械厂 | A kind of novel rotary vane type vacuum pump |
-
2014
- 2014-02-28 CN CN201420088424.3U patent/CN203948297U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201852A (en) * | 2015-10-21 | 2015-12-30 | 无锡惠山泵业有限公司 | Novel vehicle vacuum pump oil distributor |
| CN105840512A (en) * | 2016-05-27 | 2016-08-10 | 何文财 | Efficient heat dissipation type rotary-vane vacuum pump system |
| CN107842502A (en) * | 2017-12-06 | 2018-03-27 | 温岭市石桥真空机械厂 | A kind of novel rotary vane type 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: 20141119 Termination date: 20190228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |