CN203335404U - Compound seal for claw-type dry vacuum pump - Google Patents
Compound seal for claw-type dry vacuum pump Download PDFInfo
- Publication number
- CN203335404U CN203335404U CN2013202657165U CN201320265716U CN203335404U CN 203335404 U CN203335404 U CN 203335404U CN 2013202657165 U CN2013202657165 U CN 2013202657165U CN 201320265716 U CN201320265716 U CN 201320265716U CN 203335404 U CN203335404 U CN 203335404U
- Authority
- CN
- China
- Prior art keywords
- seal
- boss
- oil sealing
- skeleton oil
- lug boss
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 150000001875 compounds Chemical class 0.000 title claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 58
- 210000000078 claw Anatomy 0.000 claims description 14
- 235000014121 butter Nutrition 0.000 claims description 11
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 2
- 239000004519 grease Substances 0.000 abstract 2
- 239000002828 fuel tank Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
Images
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model relates to a compound seal for a claw-type dry vacuum pump, belonging to the field of machine manufacturing. The compound seal is composed of a shaft, a shaft sleeve, a lug boss, a lug boss seal, an upper frame oil seal, a lower frame oil seal and a grease injection hole, wherein the shaft sleeve is sheathed on the shaft; the lug boss is assembled on an exhaust plate working surface in an interference mode; the lug boss seal is positioned on the outer side of the shaft sleeve on the lug boss; the grease injection hole is positioned between the lug boss seal and the upper frame oil seal and connected with the lug boss; the upper frame oil seal and the lower frame oil seal are positioned under the lug boss; the lower frame oil seal is positioned under the upper frame oil seal; and the upper frame oil seal and the lower frame oil seal are assembled in a lip-to-lip mode. The seal provided by the utility model can be used for other pumps, has the advantages of favorable seal effect and long service life (approximate to ten years), and has favorable market prospects.
Description
Technical field
The utility model relates to a kind of claw shape dry type vacuum pump compound seal, belongs to mechanical manufacturing field.
Background technique
Current, the sealing of using between claw shape dry type vacuum pump mesohigh end and fuel tank is mostly outside framework oil seal, mechanical seal or piston ring compound seal.The shortcoming that this sealing is used on claw shape dry type vacuum pump is, is not suitable for the workplace of this pump, and outside framework oil seal and mechanical seal run into impurity under High Rotation Speed, and long time running very easily damages.Use the piston ring compound seal can not be competent at the working environment of this pump, because in the process of pump compression exhaust, the interior gas of pump easily liquefies, liquid and impurity can enter into fuel tank along the part of similar piston ring principle sealing, pollute the lubricant oil in fuel tank, cause the pump lost of life.Sealing problem between claw shape dry type vacuum pump high voltage terminal and fuel tank, become those skilled in the art's technical problem anxious to be resolved.
Summary of the invention
Technical purpose of the present utility model is the compound seal sealed between a kind of applicable claw shape dry type vacuum pump mesohigh end of design and fuel tank, solve and seal at present flimsy phenomenon herein, provide a kind of in use not fragile, be applicable to the compound seal of claw shape dry type vacuum pump pump work occasion.
For realizing above technical purpose, a kind of claw shape dry type vacuum pump of the utility model by the technological scheme of compound seal is: axle, axle sleeve, boss, boss sealing, upper skeleton oil sealing, lower skeleton oil sealing, notes butter hole, consist of; Axle sleeve is enclosed within on axle, and the boss interference is assemblied on the exhaustion plate working surface, and certain interval is arranged between rotor inner hole.The boss sealing is positioned at the axle sleeve outside above boss, annotate the butter hole between boss sealing and upper skeleton oil sealing, with boss, be connected, upper skeleton oil sealing and lower skeleton oil sealing are positioned at below boss, the lower skeleton oil sealing is positioned at below the upper skeleton oil sealing, upper skeleton oil sealing and the upper and lower concurrent assembly of lower skeleton oil sealing, the upper skeleton oil sealing is lubricated from the butter of annotating the injection of butter hole, and the lower skeleton oil sealing relies on the vacuum oil got rid of in gear-box to be lubricated.In the time of pump work under High Rotation Speed, form clearance seal between boss and rotor, gas, liquid and impurity in active chamber can not enter into by outstanding step following sealing position, upper skeleton oil sealing and lower skeleton oil sealing obtain lubricated not fragile for a long time, play good seal action, and even, be worn down to the situation of threshold state at the skeleton oil seal face after, the conductance that gas passes through is still very little, it is revealed still in the acceptable scope.
Beneficial effect: a kind of claw shape dry type vacuum pump of the utility model has the following advantages with compound seal: provide a kind of in use not fragile, the occasion that is applicable to the claw shape dry type vacuum pump complexity is used, this sealing also can be used for other pump, good sealing effect, life-span is long, approach 10 years, there are good market prospects.
The accompanying drawing explanation
Fig. 1 is a kind of claw shape dry type vacuum pump of the utility model compound sealing structure schematic diagram.By axle 1, axle sleeve 2, boss 3, boss sealing 4, upper skeleton oil sealing 5, lower skeleton oil sealing 6, notes butter hole 7, formed.
Embodiment
Below in conjunction with accompanying drawing, a kind of claw shape dry type vacuum pump of the utility model is described further with compound seal.
A kind of claw shape dry type vacuum pump compound seal of the utility model, be comprised of axle 1, axle sleeve 2, boss 3, boss sealing 4, upper skeleton oil sealing 5, lower skeleton oil sealing 6, notes butter hole 7; Axle sleeve 2 is enclosed within on axle 1, and boss 3 interference are assemblied on the exhaustion plate working surface, and certain interval is arranged between rotor inner hole.Boss sealing 4 is positioned at axle sleeve 2 outsides above boss 3, annotate butter hole 7 between boss sealing 4 and upper skeleton oil sealing 5, with boss 3, be connected, upper skeleton oil sealing 5 and lower skeleton oil sealing 6 are positioned at below boss 3, lower skeleton oil sealing 6 is positioned at below upper skeleton oil sealing 5, upper skeleton oil sealing 5 and lower skeleton oil sealing concurrent assembly Shang Xia 6, upper skeleton oil sealing 5 is lubricated from the butter of annotating 7 injections of butter hole, and lower skeleton oil sealing 6 relies on the vacuum oil got rid of in gear-boxes to be lubricated.In the time of pump work under High Rotation Speed, form clearance seal between boss 3 and rotor, gas, liquid and impurity in active chamber can not enter into by outstanding step following sealing position, upper skeleton oil sealing 5 obtains lubricated not fragile with lower skeleton oil sealing 6 for a long time, play good seal action, even, and, after upper skeleton oil sealing 5 and lower skeleton oil sealing 6 faces are worn down to the situation of threshold state, the flow that gas passes through is still very little, it is revealed still in the acceptable scope.
Claims (1)
1. a claw shape dry type vacuum pump compound seal, is characterized in that being comprised of axle (1), axle sleeve (2), boss (3), boss sealing (4), upper skeleton oil sealing (5), lower skeleton oil sealing (6), notes butter holes (7); Axle sleeve (2) is enclosed within on axle (1), boss (3) interference is assemblied on the exhaustion plate working surface, boss sealing (4) is positioned at axle sleeve (2) outside above boss (3), annotating butter hole (7) is positioned between boss sealing (4) and upper skeleton oil sealing (5), with boss (3), be connected, upper skeleton oil sealing (5) and lower skeleton oil sealing (6) are positioned at below boss (3), lower skeleton oil sealing (6) is positioned at below upper skeleton oil sealing (5), upper skeleton oil sealing (5) and the upper and lower concurrent assembly of lower skeleton oil sealing (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202657165U CN203335404U (en) | 2013-05-16 | 2013-05-16 | Compound seal for claw-type dry vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202657165U CN203335404U (en) | 2013-05-16 | 2013-05-16 | Compound seal for claw-type dry vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203335404U true CN203335404U (en) | 2013-12-11 |
Family
ID=49704081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202657165U Expired - Lifetime CN203335404U (en) | 2013-05-16 | 2013-05-16 | Compound seal for claw-type dry vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203335404U (en) |
-
2013
- 2013-05-16 CN CN2013202657165U patent/CN203335404U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Compound seal for claw-type dry vacuum pump Effective date of registration: 20141229 Granted publication date: 20131211 Pledgee: Zibo financial letter financing Company limited by guarantee Pledgor: ZIBO ZEYI VACUUM EQUIPMENT Co.,Ltd. Registration number: 2014990001154 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20160511 Granted publication date: 20131211 Pledgee: Zibo financial letter financing Company limited by guarantee Pledgor: ZIBO ZEYI VACUUM EQUIPMENT Co.,Ltd. Registration number: 2014990001154 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Compound seal for claw-type dry vacuum pump Effective date of registration: 20160629 Granted publication date: 20131211 Pledgee: Zibo financial letter financing Company limited by guarantee Pledgor: ZIBO ZEYI VACUUM EQUIPMENT Co.,Ltd. Registration number: 2016990000546 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20170217 Granted publication date: 20131211 Pledgee: Zibo financial letter financing Company limited by guarantee Pledgor: ZIBO ZEYI VACUUM EQUIPMENT Co.,Ltd. Registration number: 2016990000546 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |