CN202927049U - Blowback type shaft seal with double sealing lips - Google Patents
Blowback type shaft seal with double sealing lips Download PDFInfo
- Publication number
- CN202927049U CN202927049U CN2012205571161U CN201220557116U CN202927049U CN 202927049 U CN202927049 U CN 202927049U CN 2012205571161 U CN2012205571161 U CN 2012205571161U CN 201220557116 U CN201220557116 U CN 201220557116U CN 202927049 U CN202927049 U CN 202927049U
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- CN
- China
- Prior art keywords
- shaft seal
- sealing lips
- double sealing
- blowback
- type shaft
- 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
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Abstract
The utility model discloses a blowback type shaft seal with double sealing lips. The blowback type shaft seal with the double sealing lips comprises a body and dustproof cushions, wherein three circumferential notches are formed in the inner wall of the body along the axial direction, the notch located in the middle is provided with at least two radial through holes, and the dustproof cushions are arranged at the notches located on two sides. According to the blowback type shaft seal with the double sealing lips, the double sealing lips are adopted, and therefore a blowback space is formed between the double sealing lips; due to the fact that circulation air is led in for blowing the shaft seal reversely, dust can be effectively prevented from entering a bearing, frequent maintenance and overhauls are avoided, production can be carried out smoothly and stably, waste of materials is reduced at the same time, and production cost is saved.
Description
Technical field
The utility model relates to the mechanical sealing technology field, relates in particular to a kind ofly to be applicable to that solid material is carried or the shaft seal of stirring apparatus.
Background technique
In the conveying of prior art solid powder or stirring system; the sealing that shaft seal on its rotatingshaft is used is only the single face sealing lip; and design unreasonable; can not form good isolation to powder; often can occur powder in production process and enter into the phenomenon of bearing by shaft seal; cause that the bearing card is bad, belt fracture even, thereby often need to clear up powder, to change maintenance and the inspection operation of bearing and belt system, brought great inconvenience to production.Simultaneously, need in maintenance process remaining powder in system is arranged ground, thereby cause the waste of material.
The model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of back flushing type double-sealing lip shaft seal is provided, and enters bearing with effective prevention powder, avoids safeguarding frequently and overhauling, and continues to carry out thereby make to produce to stablize.
The purpose of this utility model is achieved by the following technical programs:
A kind of back flushing type double-sealing lip shaft seal that the utility model provides comprises body and dust-proof cushion; The inwall of described body is provided with vertically three and is circumferential notch; Be provided with at least two through holes that are radially on notch in the middle of described being positioned at; Described dust-proof cushion is arranged on described two notches that are positioned at both sides.The utility model is arranged on rotatingshaft, and the through hole that is positioned at median slot is used for installing purge gas additional, and one of them is air outlet hole, and remaining is the air inlet pore.The dust-proof cushion that is positioned at both sides consists of the double-sealing lip, jointly consists of the blowback space with the notch of centre and rotatingshaft.Circulate and form positive pressure by the turnover of gas in the blowback space in production process, thereby effectively stoping powder to enter bearing.
Further, three notch spaced sets described in the utility model.Described through hole can be two, and the angle between described two through holes is 30～50 °.Perhaps, described through hole is more than two, for example three～six, and on the notch in the middle of being distributed on.
Further, body described in the utility model and dust-proof cushion can be integral type, improve sealing to reduce the gap.
The utlity model has following beneficial effect:
The utility model adopts double-sealing lip formula, and between formation blowback space, by introducing recycle gas, shaft seal is carried out blowback, effectively stoped dust to enter bearing, avoided safeguarding frequently and overhauling, production can be carried out sustainedly and stably, also reduced the waste of material simultaneously, the cost of production of saving.
Description of drawings
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail:
Fig. 1 is the utility model embodiment's structural representation;
Fig. 2 is the A-A sectional view of Fig. 1.
In figure: body 1, notch 1a, 1b, 1c, through hole 1d, dust-proof cushion 2, rotatingshaft 3
Embodiment
Illustrated in figures 1 and 2 is the embodiment of the utility model back flushing type double-sealing lip shaft seal, comprises body 1 and dust-proof cushion 2.As shown in Figure 1, the inwall of body 1 is provided with vertically three and is circumferential notch 1a, 1b, 1c, three notch 1a, 1b, 1c spaced set.
As shown in Figure 2, be provided with two through hole 1d that are radially on the notch 1b in the middle of being positioned at, the angle between two through hole 1d can be 30 °, 45 ° or 50 °.In addition, also can be uniform a plurality of as not shown in three～six through hole 1d(on the notch 1b of centre).Dust-proof cushion 2 is arranged on two notch 1a, 1c that are positioned at both sides.
The present embodiment is arranged on rotatingshaft 3, and two through hole 1d that are positioned at median slot 1b are used for installing purge gas such as nitrogen additional, and one is inlet hole, and another is air outlet hole (when a plurality of through hole 1d was set, one of them was air outlet hole, and remaining is inlet hole).The dust-proof cushion 2 that is positioned at both sides consists of the double-sealing lips, with the notch 1b of centre and rotatingshaft 3 is common consists of the blowback space.Circulate and form positive pressure by the turnover of gas in the blowback space in production process, thereby effectively stoping powder to enter bearing.
Claims (6)
1. a back flushing type double-sealing lip shaft seal, comprise body (1) and dust-proof cushion (2); It is characterized in that: the inwall of described body (1) is provided with vertically three and is circumferential notch (1a, 1b, 1c); Be provided with at least two through holes (1d) that are radially on notch (1b) in the middle of described being positioned at; Described dust-proof cushion (2) is arranged on described two notches (1a, 1c) that are positioned at both sides.
2. back flushing type double-sealing lip shaft seal according to claim 1, is characterized in that: described three notches (1a, 1b, 1c) spaced set.
3. back flushing type double-sealing lip shaft seal according to claim 1, it is characterized in that: described through hole (1d) is two, the angle between described two through holes is 30～50 °.
4. back flushing type double-sealing lip shaft seal according to claim 1 is characterized in that: described through hole (1d) be more than two and be distributed in the middle of notch (1b) on.
5. back flushing type double-sealing lip shaft seal according to claim 4, it is characterized in that: described through hole (1d) is three～six.
6. back flushing type double-sealing lip shaft seal according to claim 1, it is characterized in that: described body (1) and dust-proof cushion (2) are integral type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205571161U CN202927049U (en) | 2012-10-26 | 2012-10-26 | Blowback type shaft seal with double sealing lips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205571161U CN202927049U (en) | 2012-10-26 | 2012-10-26 | Blowback type shaft seal with double sealing lips |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202927049U true CN202927049U (en) | 2013-05-08 |
Family
ID=48217010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205571161U Expired - Lifetime CN202927049U (en) | 2012-10-26 | 2012-10-26 | Blowback type shaft seal with double sealing lips |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202927049U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103407201A (en) * | 2013-08-19 | 2013-11-27 | 杭州彼特环保包装有限公司 | Bag bottom gluing machine and bag bottom gluing method |
| CN104832651A (en) * | 2015-05-13 | 2015-08-12 | 福建海源自动化机械股份有限公司 | Dust-proof device and dust-proof ring |
| CN106122477A (en) * | 2015-05-06 | 2016-11-16 | 卡特彼勒公司 | Contaminant separator for rotation shaft seal |
-
2012
- 2012-10-26 CN CN2012205571161U patent/CN202927049U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103407201A (en) * | 2013-08-19 | 2013-11-27 | 杭州彼特环保包装有限公司 | Bag bottom gluing machine and bag bottom gluing method |
| CN103407201B (en) * | 2013-08-19 | 2016-08-10 | 杭州彼特环保包装有限公司 | Coating method at the bottom of bag end gluing machine and bag |
| CN106122477A (en) * | 2015-05-06 | 2016-11-16 | 卡特彼勒公司 | Contaminant separator for rotation shaft seal |
| CN104832651A (en) * | 2015-05-13 | 2015-08-12 | 福建海源自动化机械股份有限公司 | Dust-proof device and dust-proof ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130508 |