CN209180013U - Two-stage vacuum pump exhaust valve cap component - Google Patents
Two-stage vacuum pump exhaust valve cap component Download PDFInfo
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- CN209180013U CN209180013U CN201821640034.7U CN201821640034U CN209180013U CN 209180013 U CN209180013 U CN 209180013U CN 201821640034 U CN201821640034 U CN 201821640034U CN 209180013 U CN209180013 U CN 209180013U
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- exhaust valve
- valve cap
- prime
- cover board
- rear class
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Abstract
The utility model discloses a kind of two-stage vacuum pump exhaust valve cap components, including the prime exhaust valve cap that is installed on outside prime exhaust valve and the rear class exhaust valve cap being installed on outside rear class exhaust valve, the prime exhaust valve cap, rear class exhaust valve cap pass through fixing bolt respectively and are fixed on prime stator, on rear class stator；Prime exhaust valve cap is made of cover board and two supporting plates, the top of the cover board covering prime exhaust valve, and rear class exhaust valve cap is extended to rear side, described two supporting plates are respectively arranged on the left and right sides of cover board, the top margin of supporting plate is connect with cover board, and bottom edge is supported in the top plane of prime stator；The mounting hole for wearing fixing bolt is offered on cover board.The utility model can effectively guide the part oil sputtered from rear class exhaust valve to enter the upper surface of prime stator, make have oily covering between prime exhaust valve plate and the upper surface of prime stator always, to guarantee the leakproofness of prime pump chamber, guarantee vacuum pump it is reliable and stable vacuumize performance.
Description
Technical field
The utility model relates to vacuum pump technology field more particularly to a kind of two-stage vacuum pump exhaust valve cap components.
Background technique
Dual oil seal formula vacuum pump is a kind of to do sealing medium with machine oil, have that limiting pressure is low and small power consumption etc.
The high compression ratio vacuum pump of feature is generally used for extracting clean air or use as power device, is widely used in refrigeration, changes
The industry fields such as work, medicine, electronics and metallurgy.Referring to Figures 1 and 2, the pump housing of dual oil seal formula vacuum pump is by drive end bearing bracket 1, preceding
Grade stator 2, mesospore 3, rear class stator 4 and rear end cap 5 are successively composed, and are respectively formed in prime stator 2, rear class stator 4
Prime pump chamber, rear class pump chamber are also equipped with exhaust valve 6,7 and exhaust valve cap 8,9, exhaust valve on prime stator 2, rear class stator 4
Lid 8,9 is located at outside exhaust valve 6,7, and for separating the gas mixture of discharge, the front and rear sides of exhaust valve cap 8,9 are equal
Equipped with several oil gas taps 91.Pumped gas enters rear class pump chamber through prime pump chamber, by exhaust valve 7,8 discharge pumps outside.
In traditional two-stage vacuum pump, the pressure oil circuit for providing lubricating oil is connected with rear class pump chamber, in the work of vacuum pump
During work, rear class pump chamber persistently has oily entrance, and oil is constantly discharged with high pressure gas from rear class exhaust valve, keeps rear class exhaust
Always there is oily covering between valve block and the upper surface of rear class stator, to guarantee the leakproofness of rear class pump chamber.But prime pump chamber is only
Have a small amount of oil when starting to work, in the course of work, the oil in pump chamber be discharged with high pressure gas from prime exhaust valve or into
Enter rear class pump chamber, fore pump is intracavitary just without oil after a period of work, also, referring to Figures 1 and 2, from rear class exhaust valve 6
The oil of discharge can splashes, splash down on mesospore 3 or surrounding, cannot the good upper surface for flowing into prime stator 2, therefore not
Be able to maintain between prime exhaust valve plate and the upper surface of prime stator 2 has oily covering always, to influence the sealing of prime pump chamber
Property, the vacuum degree decline of vacuum pump pumping is caused, vacuum degree qualification rate is low.
Utility model content
The technical problem to be solved by the utility model is to overcome the above problem, and provide a kind of two-stage vacuum pump exhaust
Bonnet assemblies can effectively guide the part oil sputtered from rear class exhaust valve to enter the upper surface of prime stator, make prime
Always there is oily covering between exhaust valve plate and the upper surface of prime stator, to guarantee the leakproofness of prime pump chamber, guarantee vacuum
It pumps and reliable and stable vacuumizes performance.
The technical solution of the utility model is:
A kind of two-stage vacuum pump exhaust valve cap component, including the prime exhaust valve cap being installed on outside prime exhaust valve and installation
In the rear class exhaust valve cap outside rear class exhaust valve, the prime exhaust valve cap, rear class exhaust valve cap are solid by fixing bolt respectively
Due on prime stator, rear class stator, the front and rear sides of rear class exhaust valve cap are equipped with several oil gas taps, and feature exists
In: prime exhaust valve cap is made of cover board and two supporting plates, the top of the cover board covering prime exhaust valve, and is extended to rear side
To rear class exhaust valve cap, described two supporting plates are respectively arranged on the left and right sides of cover board, and the top margin of supporting plate is connect with cover board, bottom edge branch
Support is in the top plane of prime stator；The mounting hole for wearing fixing bolt is offered on cover board.The prime of the structure is vented
It is open before and after valve deck, and since the cover board of prime exhaust valve cap extends to rear class exhaust valve cap, from rear class exhaust valve
Being discharged can simultaneously be intercepted to the oil that front side is splashed by cover board, and cover board can smoothly guide a part of oil to be rebuffed after under cover board
Surface flows into the upper surface of prime stator, and another part oil springs back into the upper surface of prime stator, is vented prime after being rebuffed
Always there is oily covering between valve block and the upper surface of prime stator, to guarantee the leakproofness of prime pump chamber.
Further, several gas vents are offered on two supporting plates described in the utility model.
Further, the width of supporting plate described in the utility model and the axial width of prime stator match.
Further, the oil on front side of covering rear class exhaust valve cap is extanded rearward on rear side of cover board described in the utility model
Gas tap.Such structure can guarantee that cover board all intercepts the oil for being discharged from rear class exhaust valve and splashing to front side.
Further, the top of covering vacuum pump drive end bearing bracket is extended forwardly on front side of cover board described in the utility model.
Further, the lower surface of cover board described in the utility model is equipped with latticed downwardly convex reinforcing rib.Setting
Reinforcing rib can increase the intensity of cover board in the case where cover plate materials, thickness are constant, improve product reliability.
Further, the lower surface of cover board described in the utility model in the edge of mounting hole one enclose thicken, thickness with plus
Strengthening tendons flush.Since the edge of mounting hole bears the compression of fixing bolt for a long time, it can be prevented by thickening at the position
Fracture improves product reliability.
Further, the bottom edge of two supporting plates described in the utility model offers at least one notch.Such knot
Structure facilitates flow into the oil having more behind prime stator upper surface and flows to each sealing surface around, to guarantee that the entirety of vacuum pump is close
Feng Xing improves the vacuum degree of vacuum pump pumping.
Further, the bottom edge of rear class exhaust valve cap described in the utility model offers several notches.Such knot
The oil that structure is conducive to be discharged and be accumulated in from rear class exhaust valve rear class stator upper surface flows to each sealing surface around, to guarantee
The overall tightness of vacuum pump improves the vacuum degree of vacuum pump pumping.
The beneficial effects of the utility model are:
1, it is open to be set as front and back for prime exhaust valve cap, and its cover board extends to rear class exhaust valve cap, therefore from
The discharge of rear class exhaust valve can simultaneously be intercepted to the oil that front side is splashed by cover board, and be induced to flow into the upper surface of prime stator, before making
There is oily covering always between grade exhaust valve plate and the upper surface of prime stator, to guarantee the leakproofness of prime pump chamber, improves true
The vacuum degree of empty pumping gas.
2, notch is opened up on the bottom edge of prime exhaust valve cap, rear class exhaust valve cap, is conducive to prime stator and rear class stator
The oil of upper surface flows to each sealing surface around, to guarantee the overall tightness of vacuum pump, guarantees that vacuum pump is reliable and stable
Vacuumize performance.
Detailed description of the invention
Fig. 1 is the usage state diagram of traditional two-stage vacuum pump exhaust valve cap.
Fig. 2 is the A-A cross-sectional view of Fig. 1.
Fig. 3 is the usage state diagram of the utility model embodiment exhaust valve cap component.
Fig. 4 is the top view of Fig. 3.
Fig. 5 is the B-B cross-sectional view of Fig. 4.
Fig. 6 is the three-dimensional structure diagram one of prime exhaust valve cap in the utility model embodiment.
Fig. 7 is the three-dimensional structure diagram two of prime exhaust valve cap in the utility model embodiment.
Fig. 8 is the three-dimensional structure diagram one of rear class exhaust valve cap in the utility model embodiment.
Fig. 9 is the three-dimensional structure diagram two of rear class exhaust valve cap in the utility model embodiment.
Specific embodiment
The utility model is further described now in conjunction with drawings and examples:
In the description of the present invention, it should be understood that the terms such as "upper", "lower", "left", "right", "front", "rear"
Indicated orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and being merely for convenience of description, this is practical new
Type, rather than the device or original part of indication or suggestion meaning must have a particular orientation, therefore should not be understood as practical to this
Novel limitation.
As shown in Figure 3-Figure 5, two-stage vacuum pump exhaust valve cap component provided in this embodiment, including it is installed on prime exhaust
Prime exhaust valve cap 10 outside valve 6 and the rear class exhaust valve cap 20 being installed on outside rear class exhaust valve 7, prime exhaust valve cap 10, after
Grade exhaust valve cap 20 is fixed on prime stator 2, on rear class stator 4 by fixing bolt 30 respectively, before rear class exhaust valve cap 20
Two sides are equipped with several oil gas taps 21 afterwards.
As shown in Figure 5-Figure 7, in order to guide from rear class exhaust valve 7 be discharged splashes oil stream enter the upper of prime stator 2
Surface, prime exhaust valve cap 10 are set as the open structure in front and back, are made of cover board 11 and two supporting plates 12.Cover board 11 covers
The rear side of the top of prime exhaust valve 6, cover board 11 extends to rear class exhaust valve cap 20, covering rear class exhaust valve cap front side to rear side
Oil gas tap 21.The front side of cover board 11 extends forwardly into the top of covering vacuum pump drive end bearing bracket 1.Two supporting plates 12 are set respectively
In the left and right sides of cover board 11, the top margin of supporting plate 12 is connect with cover board 11, and bottom edge is supported in the top plane of prime stator 2, branch
The width of plate 12 and the axial width of prime stator 2 match.The peace for wearing fixing bolt 30 is also provided on cover board 11
Fill hole 13.It is discharged from rear class exhaust valve 7 and can be intercepted to the oil that front side is splashed by cover board 11, and cover board 11 can smoothly guide one
Part oil flows into the upper surface of prime stator 2 along the lower surface of cover board 11 after being rebuffed, another part oil is sprung back into after being rebuffed
The upper surface of prime stator 2 makes have oily covering between prime exhaust valve plate and the upper surface of prime stator 2 always, to guarantee
The leakproofness of prime pump chamber.
In order to which the oil for enabling prime stator 2 and 4 upper surface of rear class stator to have more flows to each sealing surface around, with into one
Step guarantees that the overall tightness of vacuum pump offers on two supporting plates 12 of prime exhaust valve cap 10 as shown in Figure 6 and Figure 7
Several gas vents 14, the bottom edge of two supporting plates 12 offer at least one notch 15, as shown in Figure 8 and Figure 9, rear class exhaust valve
The bottom edge of lid 20 also offers several notches 22, in the present embodiment, the bottom edge of two supporting plates 12 of prime exhaust valve cap 10
A notch is respectively arranged in the bottom edge of respectively one notch 15 of setting, 20 front side of rear class exhaust valve cap, rear side and left and right wherein side
22。
In addition, product reliability is improved, as shown in fig. 7,10 cover board of prime exhaust valve cap to increase the intensity of cover board 11
11 lower surface is equipped with latticed downwardly convex reinforcing rib 16, and the lower surface of cover board 11 adds in the circle of the edge of mounting hole 13 one
Thickness, thickness are flushed with reinforcing rib 16.
It is understood that for those of ordinary skill in the art, it can be with technology structure according to the present utility model
Think of makes various other changes and modifications, and all these changes and deformation all should belong to the utility model claims
Protection scope.
Claims (9)
1. a kind of two-stage vacuum pump exhaust valve cap component including the prime exhaust valve cap being installed on outside prime exhaust valve and is installed on
Rear class exhaust valve cap outside rear class exhaust valve, the prime exhaust valve cap, rear class exhaust valve cap are fixed by fixing bolt respectively
In on prime stator, rear class stator, the front and rear sides of rear class exhaust valve cap are equipped with several oil gas taps, and feature exists
In: prime exhaust valve cap is made of cover board and two supporting plates, the top of the cover board covering prime exhaust valve, and is extended to rear side
To rear class exhaust valve cap, described two supporting plates are respectively arranged on the left and right sides of cover board, and the top margin of supporting plate is connect with cover board, bottom edge branch
Support is in the top plane of prime stator；The mounting hole for wearing fixing bolt is offered on cover board.
2. two-stage vacuum pump exhaust valve cap component according to claim 1, it is characterised in that: opened on described two supporting plates
Equipped with several gas vents.
3. two-stage vacuum pump exhaust valve cap component according to claim 1 or 2, it is characterised in that: the width of the supporting plate
Match with the axial width of prime stator.
4. two-stage vacuum pump exhaust valve cap component according to claim 1, it is characterised in that: the rear side of the cover board is backward
Extend to the oil gas tap on front side of covering rear class exhaust valve cap.
5. two-stage vacuum pump exhaust valve cap component according to claim 1, it is characterised in that: the front side of the cover board is forward
Extend to the top of covering vacuum pump drive end bearing bracket.
6. two-stage vacuum pump exhaust valve cap component according to claim 1, it is characterised in that: the lower surface of the cover board is set
There is latticed downwardly convex reinforcing rib.
7. two-stage vacuum pump exhaust valve cap component according to claim 6, it is characterised in that: the lower surface of the cover board in
The edge one of mounting hole, which encloses, to be thickeied, and thickness is flushed with reinforcing rib.
8. two-stage vacuum pump exhaust valve cap component according to claim 1, it is characterised in that: the bottom edge of described two supporting plates
Offer at least one notch.
9. two-stage vacuum pump exhaust valve cap component according to claim 8, it is characterised in that: the rear class exhaust valve cap
Bottom edge offers several notches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821640034.7U CN209180013U (en) | 2018-10-10 | 2018-10-10 | Two-stage vacuum pump exhaust valve cap component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821640034.7U CN209180013U (en) | 2018-10-10 | 2018-10-10 | Two-stage vacuum pump exhaust valve cap component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209180013U true CN209180013U (en) | 2019-07-30 |
Family
ID=67361026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821640034.7U Active CN209180013U (en) | 2018-10-10 | 2018-10-10 | Two-stage vacuum pump exhaust valve cap component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209180013U (en) |
-
2018
- 2018-10-10 CN CN201821640034.7U patent/CN209180013U/en active Active
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