CN2802136Y - Step pressure reducing shaft-sealing structure - Google Patents
Step pressure reducing shaft-sealing structure Download PDFInfo
- Publication number
- CN2802136Y CN2802136Y CN 200520040023 CN200520040023U CN2802136Y CN 2802136 Y CN2802136 Y CN 2802136Y CN 200520040023 CN200520040023 CN 200520040023 CN 200520040023 U CN200520040023 U CN 200520040023U CN 2802136 Y CN2802136 Y CN 2802136Y
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- seal
- flange
- ring
- sealing
- circle
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- Expired - Fee Related
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- Mechanical Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a stepping pressure reducing shaft-sealing structure which comprises a flange, a sealing body, a plurality of supporting rings, a plurality of rubber sleeves, a backing ring and a locking threaded ring, wherein the flange and the sealing body are connected, and a plurality of supporting rings and a plurality of rubber sleeves are staggered to be arranged to make up a plurality of sealing and are arranged on the inner side of the sealing body. The backing ring and the locking threaded ring are orderly arranged on the outer end of the sealing ring to tightly press the sealing ring, and thus stepping pressure reducing sealing can be formed. The flange and the sealing body are separately arranged. One side of the outer end of the sealing body is provided with a boss to form an inner and an outer circles of bosses. The flange is penetrated and sheathed on the sealing body, and is butted and pressed on the outer ring of the sealing body and is connected with the sealing body. The utility model has the advantages of low cost and easy installation, and can bear large operating pressure. When the stepping pressure reducing shaft-sealing structure is arranged, the sealing ring can not be broken and leakage can not occur. The extensive popularization and application of stepping pressure reducing shaft sealing can be achieved by the utility model.
Description
Technical field
The utility model relates to the sealing configuration of the pump housing, relates in particular to a kind of shaft seal structure of step-down step by step.
Background technique
In the pump series products, the transmission shaft of power passes pump housing place need adopt sealing technique, reveals to prevent the material in the pump.Available technology adopting is the step-down shaft seal structure step by step, this sealing configuration generally includes flange, seal, several pushing out rings, several rubber sleeves, gasket ring, locking screw ring and O-ring seals, flange and seal make an integral body, several pushing out rings and the staggered little seal ring that contacts in several roads of forming of several rubber sleeves, form the sealing of step-down step by step, be lubricated at the injection molybdenum disulphide grease.The advantage of this sealing configuration be do not wear and tear axle sleeve, energy-conservation, long service life, can reduce cost of labor.But because seal is to fuse with flange and the narrow limitation of rubber sleeve structural type, in the process that reality is used, find to have following problem, the first will be alignd the flange bolt hole can not settle at one go with the bolt hole of the pump housing when installing and locating, be rotated alignment.But during the rotation of flange rotating band motive sealing body, cause the O-ring seals fracture in the seal outside easily, leak thereby form; It two is because seal and flange are all-in-one-piece, then needs to process with the stainless steel material of bulk, and processing cost is higher; It three is because seal and flange are all-in-one-piece, is subjected to the influence of installing space bigger when mounted, comparatively twists and turns; It four is because the narrow limitation of rubber sleeve structural type, and the scope that makes it adapt to the pump series products is narrower, thereby has influenced applying of this excellent product greatly.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that traditional shaft seal structure exists, and provides a kind of and install easily, can not cause seal ring fracture, manufacture cost than the end, the shaft seal structure of step-down step by step that using scope is wide.
In order to realize above-mentioned purpose, the utility model adopts following technological scheme:
This step by step the step-down shaft seal structure comprise flange, seal, several pushing out rings, several rubber sleeves, gasket ring and locking screw ring, flange links to each other with seal, several pushing out rings and several rubber sleeves are crisscross arranged and constitute the multiple-sealed inboard that is arranged on seal, the outer end that gasket ring and locking screw ring are set in sequence in seal ring compresses seal ring, wherein, described flange and seal split are provided with, outer end one side of closing at seal is provided with a circle boss, form inside and outside two circle steps, flange is set on the seal and is pressed on that seal links to each other on its outer ring step.
Be arranged with two axial slotted eyes on the described flange.
Described flange is provided with two screws that connect.
The body outer wall of described seal in its boss outside is provided with a circle groove.
The body outer wall of described seal in its boss outside is provided with a circle internal thread.
Described seal is provided with a tank filler sleeve that radially connects on its boss, wall is provided with the axial input oil groove of this tank filler sleeve of connection within it.
Described seal cuts the groove of installation seal ring to boss on its outer wall.
Described seal is held within it and is provided with the inside projection of a circle, forms step in the circle.
Matching gap between described seal and the flange is controlled in the 0.1mm.
In the shaft seal structure of step-down step by step of the present utility model, because flange and seal split are provided with, when rotary flange is installed, can not drive the seal rotation, can guarantee to be nested in the outer O-ring seals of seal and can not rupture, prevent to leak, need not to change, save installation time and material; Seal is installed earlier during installation, mounting flange again, excessive because of volume when having solved flange and seal and being linked to be integral body, limited installation inconvenience that brings of installing space and long problem of installation time have improved installation efficiency; During fabrication, seal can be processed with stainless steel pipe, and flange can be processed with thin corrosion resistant plate, needn't resemble to make with the body of stainless steel of bulk the linking body structure, has both saved material, has also reduced the workload of processing, and has reduced manufacture cost; Adopt the rubber sleeve of lips structural type to improve the ability of the withstand voltage and sealing of step-down axle envelope step by step greatly.All help realizing applying on a large scale of step-down shaft seal structure step by step based on these characteristics.
Description of drawings
Fig. 1 is the structural representation (comprising the relative pump housing and axle) of this novel shaft seal structure of step-down step by step.
Fig. 2 is the flange arrangement schematic representation of this novel shaft seal structure of step-down step by step.
Fig. 3 is the schematic side view of Fig. 2.
Fig. 4 be this novel shaft seal structure of step-down step by step seal partly cut open structural representation.
Specific embodiments
For further specifying above-mentioned purpose of the present utility model, technological scheme and effect, in conjunction with above-mentioned each figure the utility model is described in detail by the following examples.
See also Fig. 1, the shaft seal structure of step-down step by step 1 of the present utility model is used to be set on the transmission shaft 2 and is installed in the axis hole of the pump housing 3.This shaft seal structure 1 comprises flange 11, seal 12, several pushing out rings 13, several lips rubber sleeves 14, gasket ring 15 and locking screw ring 16.Flange 11 is fastenedly connected by the screw and the pump housing 3, and fixedly connected with seal 12 by fastening screw trip bolt, in the axis hole of the pump housing 3, several pushing out rings 13 and several lips rubber sleeves 14 are crisscross arranged and form the inside that multiple-sealed circle is arranged on seal 2, form the sealing of step-down step by step.Gasket ring 15 is pressed on last one seal ring, and 16 on locking screw ring is pressed on the gasket ring 15
See also Fig. 2, Fig. 3, they are the utility model schematic representation of the flange arrangement of step-down axle envelope 1 step by step.Radially screw 112 of two axial slotted eyes 111 and two is arranged on this flange 11.Axial slots 111 is used for by screw the flange 11 and the pump housing 3 being connected.Radially screw 112 is used for by screw flange and seal 12 being connected.
Please in conjunction with Fig. 4, Fig. 4 is the utility model structural representation of the seal 12 of step-down axle envelope 1 step by step.Seal 12 closes on outer end one side at it and is provided with a circle boss 121, forms inner ring step 122 and outer ring step 123, and flange 11 is set on the outer end of seal 12 and is pressed on the outer ring step 123.Because the matching gap between seal and the flange is controlled in the 0.1mm, can guarantee the mobility and the tightness that connect between the two.Inner ring step 112 is used for closely linking to each other with the pump housing 3 by O-ring seals 17.Body outer wall outside the boss of seal 12 is provided with groove 124, is used for by Cock screw seal 12 and flange 11 is fastening.On the boss of seal 12, be provided with a tank filler sleeve 126 that radially connects, be provided with the axial input oil groove 127 of this tank filler sleeve of connection at the inwall of seal 12.Tank filler sleeve 126 and input oil groove 127 are to be used to inject molybdenum disulphide grease come seal ring is lubricated.Be provided with seal groove 128/129 at seal 12 outer walls, be used to install O-ring seals 19.Be provided with in the inner of seal 12 one to projection 120, form step in the circle, be used for linking to each other with the first road pushing out ring interlock.
The utility model step-down axle step by step is enclosed in when assembling and installing, at first several pushing out rings 13 and several rubber sleeves 14 are connect staggered being assemblied in the seal 12 of order of a rubber sleeve by a pushing out ring, then gasket ring 15 is pressed on last rubber sleeve, locking ring 16 is screwed in the seal 12; O-ring seals 19 is packed on the seal 12 in the corresponding seal groove; Then seal 12 is inserted together with its assembly parts in the axis hole of the pump housing, be set on flange 11 on the seal 12 again and be pressed on its outer ring step 123.Rotary flange 11 makes slotted eye 111 align with screw on the pump housing and uses bolt, and the Cock screw of tightening at last on two screws 112 that are contained in flange 11 in advance fixedly fuses flange 11 and seal 12.
Certainly, those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in the scope of the utility model claims the above embodiment's variation, modification.
Claims (9)
1. step-down shaft seal structure step by step, comprise flange, seal, several pushing out rings, several rubber sleeves, gasket ring and locking screw ring, flange links to each other with seal, several pushing out rings and several rubber sleeves are crisscross arranged and form the multiple-sealed inboard that is arranged on seal, the outer end that gasket ring and locking screw ring are set in sequence in seal ring compresses seal ring, thereby form the sealing of step-down step by step
It is characterized in that:
Described flange and seal split are provided with, and are provided with a circle boss in outer end one side of closing on of seal, form inside and outside two circle steps, and flange is set on the seal and is pressed on that seal links to each other on its outer ring step.
2. the shaft seal structure of step-down step by step according to claim 1,
It is characterized in that:
Described flange is provided with axial slots.
3. the shaft seal structure of step-down step by step according to claim 1,
It is characterized in that:
Described flange is provided with two screws that radially connect.
4. according to claim 1 and the 2 described shaft seal structures of step-down step by step,
It is characterized in that:
The body outer wall of described seal in its boss outside is provided with a circle groove.
5. the shaft seal structure of step-down step by step according to claim 1,
It is characterized in that:
The inner body wall of described seal in its boss outside is provided with a circle internal thread.
6. the shaft seal structure of step-down step by step according to claim 1,
It is characterized in that:
Described seal is provided with a tank filler sleeve that radially connects on its boss, wall is provided with the axial oil groove of this tank filler sleeve of connection within it.
7. the shaft seal structure of step-down step by step according to claim 1,
It is characterized in that:
Described seal has cut seal groove at its outer wall to outside boss.
8. the shaft seal structure of step-down step by step according to claim 1,
It is characterized in that:
Described seal is held within it and is provided with the inside projection of a circle, forms step in the circle.
9. the shaft seal structure of step-down step by step according to claim 1,
It is characterized in that:
Matching gap between described seal and the flange is controlled in the 0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520040023 CN2802136Y (en) | 2005-03-09 | 2005-03-09 | Step pressure reducing shaft-sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520040023 CN2802136Y (en) | 2005-03-09 | 2005-03-09 | Step pressure reducing shaft-sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2802136Y true CN2802136Y (en) | 2006-08-02 |
Family
ID=36846844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520040023 Expired - Fee Related CN2802136Y (en) | 2005-03-09 | 2005-03-09 | Step pressure reducing shaft-sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2802136Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102596504A (en) * | 2009-10-30 | 2012-07-18 | 三木普利（日本）有限公司 | Guide roller |
| CN106594284A (en) * | 2016-12-19 | 2017-04-26 | 北京云汉通航科技有限公司 | Sealing waterproof structure and ship-borne stable platform |
| CN110425281A (en) * | 2015-01-26 | 2019-11-08 | 索尤若驱动有限及两合公司 | For the sealing arrangement structure of reducer output shaft and the retarder with sealing arrangement structure |
-
2005
- 2005-03-09 CN CN 200520040023 patent/CN2802136Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102596504A (en) * | 2009-10-30 | 2012-07-18 | 三木普利（日本）有限公司 | Guide roller |
| CN102596504B (en) * | 2009-10-30 | 2014-10-15 | 三木普利（日本）有限公司 | Guide roller |
| CN110425281A (en) * | 2015-01-26 | 2019-11-08 | 索尤若驱动有限及两合公司 | For the sealing arrangement structure of reducer output shaft and the retarder with sealing arrangement structure |
| CN110425281B (en) * | 2015-01-26 | 2021-04-16 | 索尤若驱动有限及两合公司 | Sealing arrangement for a gear unit output shaft and gear unit having a sealing arrangement |
| CN106594284A (en) * | 2016-12-19 | 2017-04-26 | 北京云汉通航科技有限公司 | Sealing waterproof structure and ship-borne stable platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060802 |