CN206708010U - Vavuum pump and vacuum extractor - Google Patents

Abstract

The utility model provides a kind of vavuum pump and vacuum extractor, is related to the technical field of vaccum-pumping equipment.The vavuum pump includes pump chamber, oil sump tank and the oil return pipe for connecting the pump chamber and the oil sump tank, also include controller, the controller includes being arranged on barrier portion in the oil return pipe, the barrier portion by elastomeric material be made and/or the barrier portion on set and have elastic component；The oil return pipe is opened or closed by mobile by the barrier portion.The pump chamber that the vavuum pump effectively improves existing vavuum pump keeps connected state with oil sump tank always, make the part suction of vavuum pump in gas and fluid in absorption oil sump tank, and the technical problem for causing the efficiency of vavuum pump suck up outside air to reduce, improve the operating efficiency of vavuum pump.

Description

Vavuum pump and vacuum extractor

Technical field

The technical field of vaccum-pumping equipment is the utility model is related to, more particularly, to a kind of vavuum pump and vacuum extractor.

Background technology

Vavuum pump refer to using physics, it is chemically or physically chemical the methods of be evacuated to being taken out container and obtained or maintained The device of vacuum, it is widely used in the fields such as medication chemistry, vacuum drying, refrigeration, generally comprises reciprocating vacuum pump, rotary vane type Vavuum pump, Roots vaccum pump etc..Rotary-vane vaccum pump due to its have the advantages that various species, strong adaptability, it is cheap and It is widely used.

Rotary-vane vaccum pump internal circulation flow has pumping fluid, and gas enters full of pumping fluid from vavuum pump air entry After pump chamber, suspension elaioleucite can be mixed into, the gas containing elaioleucite is separated by gs-oil separator, and the gas isolated is by row Gas port is discharged, and elaioleucite then fallen into oil sump tank, and the pumping fluid collected in oil sump tank passes through oil return pipe in the suction function of pump chamber Flow back in pump chamber and reuse.

But existing rotary-vane vaccum pump, its pump chamber keep connected state with oil sump tank always, make the part of vavuum pump Suction causes the efficiency of vavuum pump suck up outside air to reduce, influences vacuum in drawing gas and fluid in oil sump tank The operating efficiency of pump.

Utility model content

The purpose of this utility model is to provide a kind of vavuum pump and vacuum plant, to improve vavuum pump of the prior art Pump chamber kept for connected state, the problem of influenceing vavuum pump operating efficiency with oil sump tank all the time.

The utility model provides a kind of vavuum pump, including pump chamber, oil sump tank and the connection pump chamber and the oil sump tank Oil return pipe, in addition to controller, the controller includes the barrier portion being arranged in the oil return pipe, and the barrier portion is by bullet Property material be made and/or the barrier portion on set and have elastic component；The barrier portion is opened the oil return pipe by mobile Or closing.

Further, the barrier portion is multiple elastic block pieces；The edge of each elastic block piece is provided with sawtooth Portion, multiple elastic block pieces are engaged to form complete barrier portion each other by the sawtooth portion；Multiple elastic block pieces exist The effect of pumping fluid oil pressure and the lower movement of elastic block piece its own resilient effect, the oil return pipe is opened in the oil sump tank Or closing.

Further, the controller also includes connecting tube, and multiple elastic block pieces are arranged at the connecting tube On inwall；Spring is provided between each elastic block piece and the inwall of the connecting tube.

Further, the controller also includes connecting tube, and the connecting tube is provided with oil inlet and oil-out；It is described enter The diameter of hydraulic fluid port is less than the diameter of the oil-out；The barrier portion is arranged in the oil inlet, the size of the barrier portion It is adapted with the oil inlet；Spacing preiection is provided with the oil-out, is set between the barrier portion and the spacing preiection It is equipped with the flexible member.

Further, locating part is additionally provided with the oil inlet, the locating part is used to the barrier portion being limited in In the oil inlet.

Further, the controller also includes into oil connecting pipe and goes out oil connecting pipe；It is described enter oil connecting pipe include set Put it is described go out oil connecting pipe in oil outlet chamber and extend to it is described go out oil connecting pipe outside oil suction chamber；The port of the oil outlet chamber It is provided with end cap；Oil-out is provided with the cavity wall of the oil outlet chamber；The barrier portion is entered in oil connecting pipe described in being arranged on, institute State the size of barrier portion with it is described enter oil connecting pipe be adapted；The elasticity member is provided between the barrier portion and the end cap Part.

Further, finite place piece is set on the oil suction chamber, and the locating part is used to the barrier portion being limited in institute State into oil connecting pipe.

Further, the barrier portion is block.

Further, the locating part is the spacing ring of cyclic structure.

The utility model also provides a kind of vacuum extractor, and the vacuum extractor includes the vacuum described in any of the above-described Pump.

Vavuum pump provided by the utility model, including pump chamber, oil sump tank and the oil return pipe of connection pump chamber and oil sump tank, also Including controller, controller includes being arranged on barrier portion in oil return pipe, barrier portion by elastomeric material be made and/or barrier portion on set Be equipped with flexible member, barrier portion in oil sump tank pumping fluid oil pressure and its own resilient and/or flexible member elastic force it is mutual Effect is lower to be moved, and oil return pipe is opened or closed, and the pump chamber for effectively improving existing vavuum pump keeps connecting with oil sump tank always State, make the part suction of vavuum pump in gas and fluid in absorption oil sump tank, and cause vavuum pump suck up outside empty The technical problem that the efficiency of gas reduces, improve the operating efficiency of vavuum pump.

Brief description of the drawings

, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the structural representation for the vavuum pump that the utility model embodiment provides；

Fig. 2 is the structural representation of the first controller in vavuum pump shown in Fig. 1；

Fig. 3 is the structural representation that controller shown in Fig. 2 is opened

Fig. 4 is the structural representation of second of controller in vavuum pump shown in Fig. 1；

Fig. 5 is another structural representation of controller shown in Fig. 3；

Fig. 6 is the structural representation of the third controller in vavuum pump shown in Fig. 1；

Fig. 7 is another structural representation of controller shown in Fig. 5.

Icon：10- pump chambers；20- oil sump tanks；30- oil return pipes；40- controllers；41- elastic block pieces；411- sawtooth portion；42- Connecting tube；421- oil inlets, 422- oil-outs；43- springs；44- spacing preiections；45- blocks；46- spacing rings；47- oil-feeds connect Adapter；471- oil outlet chambers；472- oil suction chambers；473- end caps；48- goes out oil connecting pipe；50- oil return imports；60- fixed seats；70- is cold Condenser；80- check valves；90- fuel tanks；91- observation windows.

Embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described Embodiment is the utility model part of the embodiment, rather than whole embodiments.Based on the embodiment in the utility model, sheet The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality Novel protected scope.

, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only Described for the ease of description the utility model and simplifying, rather than instruction or imply signified device or element must have it is specific Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.

, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Concrete meaning of the language in the utility model.

Embodiment 1

The present embodiment provides a kind of vavuum pump, and its structure is as shown in figure 1, including pump chamber 10, oil sump tank 20 and connection pump The oil return pipe 30 of chamber 10 and oil sump tank 20, in addition to controller 40, controller 40 include the barrier portion being arranged in oil return pipe 30, Barrier portion by elastomeric material be made and/or barrier portion on set and have elastic component；Barrier portion is by mobile by the oil return pipe 30 Open or close.

Barrier portion is provided with the oil return pipe 30 for the vavuum pump that the present embodiment provides, barrier portion vacuum in oil sump tank 20 Moved under the interaction of pump oil oil pressure and its own resilient and/or flexible member elastic force, oil return pipe 30 is opened or closed, is had Effect improves the pump chamber 10 of existing vavuum pump and keeps connected state with oil sump tank 20 always, make the part suction of vavuum pump in The gas and fluid in oil sump tank 20 are drawn, the technical problem for causing the efficiency of vavuum pump suck up outside air to reduce, is improved The operating efficiency of vavuum pump.

It should be noted that in the present embodiment, particular location of the barrier portion in oil return pipe 30, can be but unlimited In in the connector in connector between pump chamber 10 and oil return pipe 30, between oil sump tank 20 and oil return pipe 30 or oil return pipe Inside 30 pipeline.In this embodiment, it is preferred that barrier portion is arranged on connector between oil sump tank 20 and oil return pipe 30 i.e. In oil return import 50, the oil return import 50 is directly connected with oil sump tank 20, and barrier portion is arranged in the connector, to oil sump tank 20 Interior pumping fluid oil pressure changes most sensitive, can be moved according to the change of oil pressure rapidly, quickly open oil return pipe 30 Or closing.

In the present embodiment, specifically, as shown in Figures 2 and 3, barrier portion is multiple elastic block pieces 41；Each elasticity gear The edge of piece 41 is provided with sawtooth portion 411, and multiple elastic block pieces 41 are engaged and form complete barrier each other by sawtooth portion 411 Portion；Multiple elastic block pieces 41 move in oil sump tank 20 under the effect of pumping fluid oil pressure and the effect of its own resilient of elastic block piece 41, Oil return pipe 30 is opened or closed.

The operation principle of elastic block piece 41 is as described below：When pumping fluid oil pressure reaches certain pressure value in oil sump tank 20 Afterwards, under oil pressure effect, multiple elastic block pieces 41 are bent to the direction of pump chamber 10, oil return pipe 30 are opened, in oil sump tank 20 Pumping fluid is flowed back in pump chamber 10 by oil return pipe 30 and reused in the suction function of pump chamber 10；When vacuum in oil sump tank 20 When pump oil oil pressure is less than the pressure value, multiple elastic block pieces 41 restore to the original state under its own resilient effect, and pass through sawtooth portion 411 It is engaged each other, oil return pipe 30 is closed, you can realizes that pump chamber 10 disconnects with oil sump tank 20.

It should be noted that the pressure value should determine according to the model and working condition of vavuum pump.

In this embodiment, it is preferred that elastic block piece 41 is made up of elastic metallic material, to ensure that its resilient will Oil return pipe 30 is closed, and avoids elastic block piece 41 from declining the sealing of oil return pipe 30 because of excessive deform upon of hydraulic pressure, same to time delay Long life.

Multiple elastic block pieces 41 can be arranged directly in the oil return import 50 between oil sump tank 20 and oil return pipe 30, still Oil return import 50 is typically secured on oil sump tank 20, and the complex process of elastic block piece 41 is set in oil return import 50, and in bullet Property catch 41 damage when be not easy to be repaired.Preferably, as shown in Figures 2 and 3, controller 40 also includes connecting tube 42, multiple Elastic block piece 41 is arranged on the inwall of connecting tube 42；Bullet is provided between each elastic block piece 41 and the inwall of connecting tube 42 Spring 43.Controller 40 is detachably mounted in oil return import 50 by connecting tube 42, and is connected with oil return pipe 30, effectively letter The step of being overhauled to vavuum pump maintenance is changed, while spring is set between each elastic block piece 41 and the inwall of connecting tube 42 43, it is further ensured that elastic block piece 41 there are enough spring return original states to close oil return pipe 30.

It should be noted that when spring 43 is arranged on the top of elastic block piece 41, i.e., the direction that pumping fluid flows into, elasticity When catch 41 is opened, spring 43 is in the state that draws high, and after elastic block piece 41 is closed, spring 43 restores to the original state from extended state；When Spring 43 is arranged on the direction of the lower section of elastic block piece 41, i.e. pumping fluid outflow, and when elastic block piece 41 is opened, spring 43 is in Compressive state, after elastic block piece 41 is closed, spring 43 restores to the original state from compressive state.

The present embodiment additionally provides second of controller 40, and as shown in Figure 4 and Figure 5, the controller 40 also includes connecting tube 42, connecting tube 42 is provided with oil inlet 421 and oil-out 422；The diameter of oil inlet 421 is less than the diameter of oil-out 422；Barrier Portion is arranged in oil inlet 421, and size and the oil inlet 421 of barrier portion are adapted；Spacing preiection is provided with oil-out 422 44, set and have elastic component between barrier portion and spacing preiection 44.Preferably, barrier portion uses block 45, and flexible member uses Spring 43.

The operation principle of the controller 40 is as described below：Pumping fluid in oil sump tank 20 flows into from oil inlet 421 to be connected Pipe 42, compression stop 45 and spring 43, after pumping fluid oil pressure reaches certain pressure value, block 45 is compressed to oil-out In 422, because the diameter of oil inlet 421 is less than the diameter of oil-out 422, pumping fluid flows into oil return pipe 30 from oil-out 422 It is interior, finally flow back in pump chamber 10 and reuse；When pumping fluid oil pressure is less than the pressure value in oil sump tank 20, block 45 is in bullet Returned under the elastic force effect of spring 43 in oil inlet 421, because size and the oil inlet 421 of block 45 are adapted, you can by oil-feed Mouth 421 is closed, so as to close oil return pipe 30.

It should be noted that oil inlet 421 can be arranged concentrically with oil-out 422, as shown in Figure 4；Can also be different The heart is set, as shown in Figure 5.

Further, as shown in Figure 4 and Figure 5, locating part is additionally provided with oil inlet 421, locating part is used for barrier portion It is limited in oil inlet 421, prevents barrier portion from being come off from oil inlet 421.Locating part can be arranged on the inwall of oil inlet 421 On, it can also be arranged on the outward flange of oil inlet 421.Locating part can be the spacing ring 46 of cyclic structure or more Individual limited block.In the present embodiment, using spacing ring 46, and spacing ring 46 is arranged on the inwall of oil inlet 421, spacing ring 46 stress is more uniformly distributed, and limit effect is more preferable, and being arranged on the inwall of oil inlet 421 can avoid controlling in installation or removal During device 40, spacing ring 46 is bumped to, influences limit effect.

The present embodiment additionally provides the third structure of controller 40, as shown in Figure 6 and Figure 7, controller 40 also include into Oil connecting pipe 47 and go out oil connecting pipe 48；Entering oil connecting pipe 47 includes the oil outlet chamber 471 that is arranged on out in oil connecting pipe 48 and prolongs Extend out the oil suction chamber 472 outside oil connecting pipe 48；The port of oil outlet chamber 471 is provided with end cap 473；In the cavity wall of oil outlet chamber 471 It is provided with oil-out 422；Barrier portion is arranged on into oil connecting pipe 47, and the size of barrier portion is adapted with entering oil connecting pipe 47； Set and have elastic component between barrier portion and end cap 473.Preferably, barrier portion uses block 45, and flexible member uses spring 43.

The operation principle of the controller 40 is as described below：Pumping fluid in oil sump tank 20 flows into oil-feed from oil suction chamber 472 Connecting tube 47, compression stop 45 and spring 43, after pumping fluid oil pressure reaches certain pressure value, block 45 is compressed to fuel-displaced In chamber 471, due to being provided with oil-out 422 in the cavity wall of oil outlet chamber 471, pumping fluid flows into oil return pipe 30 from oil-out 422 It is interior, finally flow back in pump chamber 10 and reuse；When pumping fluid oil pressure is less than the pressure value in oil sump tank 20, block 45 is in bullet Returned under the elastic force effect of spring 43 in oil suction chamber 472, due to block 45 size and enter oil connecting pipe 47 and be adapted, i.e., and oil-feed Chamber 472 is adapted, you can will be entered oil connecting pipe 47 and is closed, so as to close oil return pipe 30.

In the present embodiment, the oil-out 422 being arranged in the cavity wall of oil outlet chamber 471 can be one can also be it is multiple, Its size can be depending on the concrete conditions such as the oil mass of the pumping fluid in oil sump tank 20.

It should be noted that connected mode can be but not limited to Fig. 6 between entering oil connecting pipe 47 and going out oil connecting pipe 48 Or shown in Fig. 7, the two is parallel to each other in figure 6, and oil outlet chamber 471 is provided entirely in out in oil connecting pipe 48；In the figure 7, two Person is mutually perpendicular to, and the part of oil outlet chamber 471 is arranged on out in oil connecting pipe 48.

Further, as shown in Figure 6 and Figure 7, finite place piece is set on oil suction chamber 472, and locating part is used to limit barrier portion System is being entered in oil connecting pipe 47, prevents barrier portion from entering in oil connecting pipe 47 to come off.Locating part can be arranged on oil suction chamber 472 On inwall, it can also be arranged on the outward flange of oil suction chamber 472.Locating part can be the spacing ring 46 of cyclic structure, can also It is multiple limited blocks.In the present embodiment, using spacing ring 46, and spacing ring 46 is arranged on the inwall of oil inlet 421, limit The stress of position ring 46 is more uniformly distributed, and limit effect is more preferable, and being arranged on the inwall of oil inlet 421 can avoid installing or removing During controller 40, spacing ring 46 is bumped to, influences limit effect.

On the basis of above-described embodiment, further, as shown in figure 1, being provided with the one of controller 40 in oil return pipe 30 End is provided with fixed seat 60, is damaged with reducing oil return pipe 30 caused by bending to controller 40.

On the basis of above-described embodiment, further, as shown in figure 1, being connected with condenser 70 on oil return pipe 30, it is used for For the pumping fluid cooling in oil return pipe 30, alleviate high oil temperature and vavuum pump internal structure is caused to damage, influence vavuum pump Normal operation.

On the basis of above-described embodiment, further, as shown in figure 1, being provided with check valve 80 on oil return pipe 30, prevent Pumping fluid in pump chamber 10 is flowed in oil sump tank 20 by oil return pipe 30.

On the basis of above-described embodiment, further, gs-oil separator is provided with oil sump tank 20, contained for separating The gas of elaioleucite.

On the basis of above-described embodiment, further, as shown in figure 1, vavuum pump also includes being used to store pumping fluid Fuel tank 90, be provided with oil filter (not shown) in fuel tank 90, the pumping fluid being used in inlet box 90, fuel tank 90 Observation window 91 is additionally provided with outer wall, it is timely when pumping fluid has used for observing the oil mass of pumping fluid in fuel tank 90 Supplement.

In summary, a kind of vavuum pump, including pump chamber 10, oil sump tank 20 and connection pump chamber 10 and are present embodiments provided The oil return pipe 30 of oil sump tank 20, in addition to controller 40, controller 40 include the barrier portion being arranged in oil return pipe 30, barrier portion By elastomeric material be made and/or barrier portion on set and have elastic component；The barrier portion in oil sump tank 20 pumping fluid oil pressure with And moved under the interaction of its own resilient and/or flexible member elastic force, oil return pipe 30 is opened or closed, is effectively improved existing The pump chamber 10 for having vavuum pump keeps connected state with oil sump tank 20 always, makes the part suction of vavuum pump in absorption oil sump tank Gas and fluid in 20, the technical problem for causing the efficiency of vavuum pump suck up outside air to reduce, improve the work of vavuum pump Make efficiency.

Embodiment 2

The present embodiment provides a kind of vacuum extractor, and vacuum extractor includes any one technology of the intermediate pump of embodiment 1 Feature.The vacuum extractor that the present embodiment provides also includes the booster pump being connected with vavuum pump.

Because the vacuum extractor that the present embodiment provides employs the vavuum pump in embodiment 1, the oil return pipe of the vavuum pump The barrier portion being provided with 30, barrier portion by elastomeric material be made and/or barrier portion on set and have elastic component；The barrier portion exists Moved in oil sump tank 20 under the interaction of pumping fluid oil pressure and its own resilient and/or flexible member elastic force, by oil return pipe 30 open or close, and make the pump chamber 10 of the vavuum pump will not keep connected state with oil sump tank 20 always, improve the vavuum pump Operating efficiency, and then improve the operating efficiency of whole vacuum extractor.

Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly The scope of each embodiment technical scheme of type.

Claims (10)

1. a kind of vavuum pump, including pump chamber, oil sump tank and the oil return pipe for connecting the pump chamber and the oil sump tank, its feature exist In the vavuum pump also includes controller, and the controller includes the barrier portion being arranged in the oil return pipe, the barrier portion By elastomeric material be made and/or the barrier portion on set and have elastic component；

The oil return pipe is opened or closed by mobile by the barrier portion.

2. vavuum pump according to claim 1, it is characterised in that the barrier portion is multiple elastic block pieces；It is each described The edge of elastic block piece is provided with sawtooth portion, and multiple elastic block pieces are engaged to be formed completely each other by the sawtooth portion Barrier portion；

Multiple elastic block pieces effect of pumping fluid oil pressure and elastic block piece its own resilient effect in the oil sump tank Lower movement, the oil return pipe is opened or closed.

3. vavuum pump according to claim 2, it is characterised in that the controller also includes connecting tube, multiple bullets Property catch is arranged on the inwall of the connecting tube；

Spring is provided between each elastic block piece and the inwall of the connecting tube.

4. vavuum pump according to claim 1, it is characterised in that the controller also includes connecting tube, the connecting tube It is provided with oil inlet and oil-out；

The diameter of the oil inlet is less than the diameter of the oil-out；

The barrier portion is arranged in the oil inlet, and the size of the barrier portion is adapted with the oil inlet；

Spacing preiection is provided with the oil-out, the elasticity member is provided between the barrier portion and the spacing preiection Part.

5. vavuum pump according to claim 4, it is characterised in that locating part, the limit are additionally provided with the oil inlet Position part is used to the barrier portion being limited in the oil inlet.

6. vavuum pump according to claim 1, it is characterised in that the controller is also included into oil connecting pipe and fuel-displaced company Adapter；

It is described enter oil connecting pipe include being arranged on it is described go out oil connecting pipe in oil outlet chamber and extend to it is described go out oil connecting pipe outside Oil suction chamber；

The port of the oil outlet chamber is provided with end cap；

Oil-out is provided with the cavity wall of the oil outlet chamber；

The barrier portion be arranged on it is described enter oil connecting pipe in, the size of the barrier portion with it is described enter oil connecting pipe be adapted；

The flexible member is provided between the barrier portion and the end cap.

7. vavuum pump according to claim 6, it is characterised in that finite place piece is set on the oil suction chamber, it is described spacing Part be used for by the barrier portion be limited in it is described enter oil connecting pipe in.

8. according to the vavuum pump described in claim any one of 4-7, it is characterised in that the barrier portion is block.

9. the vavuum pump according to claim 5 or 7, it is characterised in that the locating part is the spacing ring of cyclic structure.

10. a kind of vacuum extractor, it is characterised in that the vacuum extractor includes the vavuum pump described in any one of 1-9.