CN202914753U - Reciprocating type shaft seal - Google Patents
Reciprocating type shaft seal Download PDFInfo
- Publication number
- CN202914753U CN202914753U CN2012206025297U CN201220602529U CN202914753U CN 202914753 U CN202914753 U CN 202914753U CN 2012206025297 U CN2012206025297 U CN 2012206025297U CN 201220602529 U CN201220602529 U CN 201220602529U CN 202914753 U CN202914753 U CN 202914753U
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- China
- Prior art keywords
- shaft seal
- seal
- main body
- stuffing box
- sliding
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- Expired - Fee Related
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Abstract
The utility model belongs to the machinery engineering field and relates to a reciprocating type shaft seal. The reciprocating type shaft seal comprises a shaft seal main body, a shaft seal lip, and a lock ring spring. The reciprocating type shaft seal is characterized in that a seal sleeve of a corrugate structure is disposed, the seal sleeve is fixedly connected with the shaft seal main body or the seal sleeve and the shaft seal main body is manufactured to an integration structure, and an installation lip edge is arranged on the seal sleeve. On account of the corrugate structure of the seal sleeve, the reciprocating type shaft seal enables the shaft seal to adapt a bigger reciprocating displacement and a more severe sway vibration. Although under the circumstances of long displacement, severe vibration and sway of a moving part, the seal shaft can still maintain good seal performance with a moving part rod body.
Description
Technical field
The utility model belongs to mechanical engineering field, relates to a kind of shaft seal structure, relates in particular to a kind of sliding-contact packing structure.
Background technique
Sliding-contact packing includes shaft seal main body and sealing lip, its function is that reciprocating member is implemented axial seal, it allows shaft-like axial workpiece reciprocating on the one hand, prevents that by being sealed and matched of sealing lip and shaft surface lubricant oil is along the shaft surface escaping of moving lever on the other hand.
Traditional sliding-contact packing comes with some shortcomings, be mainly manifested in: sealing lip and shaft seal main body are imprisoned in it and restriction of axle bed are installed and can not adapt to large amoeboid movement, when moving lever has larger shift reciprocately and more violent rocking vibration, the sealing effect of sealing lip and movement parts shaft will be had a greatly reduced quality, even total failure, in other words functional reliability is lower.
Summary of the invention
The utility model proposes a kind of sliding-contact packing, shaft seal in the situation of larger shift reciprocately and more violent rocking vibration still can maintain good sealability even purpose is moving lever.
The purpose of this utility model is achieved in that a kind of sliding-contact packing, comprise shaft seal main body and sealing lip, it is characterized in that being provided with the stuffing box gland of wave structure, making that described stuffing box gland and shaft seal main body are fastenedly connected or stuffing box gland and shaft seal main body are structure as a whole, stuffing box gland are provided with installs the lip limit.
Be provided with the central shoring member in the above-mentioned stuffing box gland.
The structure of above-mentioned sealing lip is circular cylinder.
Above-mentioned installation lip limit includes ring limit structure.
Above-mentioned stuffing box gland has several, and all stuffing box gland shares one the lip limit is installed.
The material of above-mentioned stuffing box gland is different from the material of shaft seal main body.
Above-mentioned sealing lip is that fit sealing cooperates with its moving lever that is sealed and matched.
Be fitted with the lock ring spring on the above-mentioned shaft seal main body.
A kind of sliding-contact packing of the utility model, stuffing box gland is set specially and the shaft seal main body is integrally formed structure, because the corrugated elastic structure of stuffing box gland, the result be so that shaft seal can adapt to larger shift reciprocately and more violent rocking vibration, even be in the long displacement of movement parts, high vibration and the situation shaft seal of rocking still can keep good sealability with the movement parts shaft.
Description of drawings
Fig. 1 is the structural representation of a kind of floating type servo-actuated shaft seal of the utility model;
Fig. 2 is that a kind of floating type servo-actuated shaft seal of the utility model is with the structural representation of ripple central shoring member.
Embodiment
The below is further described the utility model with specific embodiment, referring to Fig. 1-2:
A kind of sliding-contact packing, comprise shaft seal main body 1 and sealing lip 2, wherein thereby the sealing lip 1 shaft surface that encircles reciprocating moving lever A and moving lever forms and is sealed and matched, in order to strengthen the sealing effect of shaft seal, can be at shaft seal main body 1 equipped lock ring spring 3, the effect of described lock ring spring 3 is sealing lips 1 of auxiliary shaft seal, and making it has tighter sealing to encircle power with moving lever A, thereby improves sealing effect; Characteristic of the present utility model is: the stuffing box gland 4 that is provided with wave structure, making that described stuffing box gland 4 is fastenedly connected with shaft seal main body 1 or stuffing box gland 4 and shaft seal main body 1 are structure as a whole, be provided with on the stuffing box gland 4 in addition lip limit 5 is installed, and by hold-down ring B sealing lip limit 5 sealing is pressed on the shaft seal seat C, because shaft seal main body 1 and sealing lip 2 are not mounted and are fastened on the shaft seal seat C, the stuffing box gland 4 of wave structure has again certain elasticity and telescopicing performance in addition, therefore shaft seal of the present utility model can adapt to larger shift reciprocately and more violent rocking vibration, be in long displacement even work as moving lever A, shaft seal still can keep with the shaft of moving lever A good sealability in high vibration and the situation of rocking.Especially, after the utility model adopts stuffing box gland 4 structures of elastic telescopic, the form that sealing lip 1 can be become fit sealing to cooperate with the matching design of moving lever A, shaft seal main body 1, sealing lip 2 and the lock ring spring 3 of shaft seal will be reciprocating with moving lever A this moment, because the speed of related movement between them greatly reduces even be zero, therefore will improve widely the sealing effect of shaft seal, the working life that simultaneously can also improve shaft seal, and also can reduce the requirement of the outer surface roughness of moving lever A.
The utility model is in order to make each fluxion structure work of stuffing box gland 4 even, can be at the stuffing box gland 4 interior central shoring member 6(that arrange referring to Fig. 2), the effect of central shoring member 6 is to allow each fluxion structure uphold evenly, especially in a nearest ripple struction of distance sealing lip 1, the burden that central shoring member 6 can obviously alleviate this ripple struction is set, it is to be noted, central shoring member 6 can be fastenedly connected on moving lever A, even can be made of one structure with moving lever A.In addition, the utility model can arrange a plurality of stuffing box glands 4 simultaneously, and it is not shown that can be designed to their sealing lip 1 a shared sealing lip 1(this moment), can greatly simplify the structure of shaft seal like this, and be convenient to install.
In order to improve sealability, the followability of also in order to improve shaft seal moving lever A being rocked simultaneously, can be circular cylinder (as shown in Figure 1) with the structural design of the sealing lip 1 of shaft seal, like this can surface of contact improves sealability and the radial load of generation is rocked in carrying by increasing.For the ease of installing, can be designed to encircle limit structure (as shown in Figure 1) with lip limit 5 is installed, ring limit structure can be the turnup structure of projection.In addition, the material of stuffing box gland 4 can be different from the material of shaft seal main body 1, can select that rigidity is larger and material shaft seal main body 1 can select rigid phase to smaller such as the material of stuffing box gland 4, can take into account like this sealing and the followability of shaft seal.
The utility model specially arranges stuffing box gland 4 and is integrally formed structure with shaft seal main body 1, because the corrugated elastic structure of stuffing box gland 4, the result be so that shaft seal can adapt to larger shift reciprocately and more violent rocking vibration, even be in that moving lever A exists long displacement, high vibration and the situation shaft seal of rocking still can keep good sealability with moving lever A shaft.
Above-described embodiment only is one of some preferred embodiments of the present utility model; be not to limit according to this protection domain of the present utility model; therefore: all various equivalences of doing according to structure of the present utility model, shape, principle change, and all should be covered by within the protection domain of the present utility model.
Claims (8)
1. a sliding-contact packing comprises shaft seal main body and sealing lip, it is characterized in that being provided with the stuffing box gland of wave structure, making that described stuffing box gland and shaft seal main body are fastenedly connected or stuffing box gland and shaft seal main body are structure as a whole, and stuffing box gland is provided with installs the lip limit.
2. a kind of sliding-contact packing according to claim 1 is characterized in that: be provided with the central shoring member in the described stuffing box gland.
3. a kind of sliding-contact packing according to claim 1 and 2, it is characterized in that: the structure of described sealing lip is circular cylinder.
4. a kind of sliding-contact packing according to claim 3 is characterized in that: described installation lip limit includes ring limit structure.
5. a kind of sliding-contact packing according to claim 1 and 2, it is characterized in that: described stuffing box gland has several, and all stuffing box glands share one the lip limit are installed.
6. a kind of sliding-contact packing according to claim 1 and 2, it is characterized in that: the material of described stuffing box gland is different from the material of shaft seal main body.
7. a kind of sliding-contact packing according to claim 1 and 2, it is characterized in that: described sealing lip is that fit sealing cooperates with its moving lever that is sealed and matched.
8. a kind of sliding-contact packing according to claim 1 and 2 is characterized in that: be fitted with the lock ring spring on the described shaft seal main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206025297U CN202914753U (en) | 2012-11-14 | 2012-11-14 | Reciprocating type shaft seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206025297U CN202914753U (en) | 2012-11-14 | 2012-11-14 | Reciprocating type shaft seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914753U true CN202914753U (en) | 2013-05-01 |
Family
ID=48163070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206025297U Expired - Fee Related CN202914753U (en) | 2012-11-14 | 2012-11-14 | Reciprocating type shaft seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914753U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104120994A (en) * | 2014-07-16 | 2014-10-29 | 平顶山市铁福来机电设备有限公司 | Drill rod hole sealing device for coal mine punching |
| CN104455450A (en) * | 2014-11-13 | 2015-03-25 | 宁夏中远天宇科技有限公司 | X-axle dustproof structure of character leak machine special for wagon body template |
| CN106763802A (en) * | 2017-01-05 | 2017-05-31 | 长沙捕光新能源科技有限公司 | A kind of diaphragm no-leakage moves back and forth dynamic sealing |
| CN108223837A (en) * | 2017-08-28 | 2018-06-29 | 河南航天液压气动技术有限公司 | A kind of solenoid valve |
| CN108913843A (en) * | 2018-09-12 | 2018-11-30 | 中冶京诚工程技术有限公司 | A kind of electrode hole vacuum sealed devices |
| CN110259273A (en) * | 2019-06-24 | 2019-09-20 | 重庆川仪速达机电有限公司 | A kind of waterproof electromagnetic lock |
-
2012
- 2012-11-14 CN CN2012206025297U patent/CN202914753U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104120994A (en) * | 2014-07-16 | 2014-10-29 | 平顶山市铁福来机电设备有限公司 | Drill rod hole sealing device for coal mine punching |
| CN104455450A (en) * | 2014-11-13 | 2015-03-25 | 宁夏中远天宇科技有限公司 | X-axle dustproof structure of character leak machine special for wagon body template |
| CN106763802A (en) * | 2017-01-05 | 2017-05-31 | 长沙捕光新能源科技有限公司 | A kind of diaphragm no-leakage moves back and forth dynamic sealing |
| CN108223837A (en) * | 2017-08-28 | 2018-06-29 | 河南航天液压气动技术有限公司 | A kind of solenoid valve |
| CN108223837B (en) * | 2017-08-28 | 2019-11-08 | 河南航天液压气动技术有限公司 | A kind of solenoid valve |
| CN108913843A (en) * | 2018-09-12 | 2018-11-30 | 中冶京诚工程技术有限公司 | A kind of electrode hole vacuum sealed devices |
| CN110259273A (en) * | 2019-06-24 | 2019-09-20 | 重庆川仪速达机电有限公司 | A kind of waterproof electromagnetic lock |
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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: 20130501 Termination date: 20151114 |
|
| EXPY | Termination of patent right or utility model |