CN203868333U - Mechanical sealing device for pump - Google Patents
Mechanical sealing device for pump Download PDFInfo
- Publication number
- CN203868333U CN203868333U CN201420297421.0U CN201420297421U CN203868333U CN 203868333 U CN203868333 U CN 203868333U CN 201420297421 U CN201420297421 U CN 201420297421U CN 203868333 U CN203868333 U CN 203868333U
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- China
- Prior art keywords
- ring
- rotating shaft
- sealing device
- mechanical sealing
- drive sleeve
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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 provides a mechanical sealing device for a pump, and belongs to the technical field of sealing systems. The mechanical sealing device solves the technical problem that an existing mechanical seal device is short in service life due to the fact that a spring in the existing mechanical sealing device loses efficacy. According to the technical scheme, the mechanical sealing device for the pump comprises a rotating shaft, a static ring and a movable ring are arranged on the rotating shaft, the rear end of the movable ring is attached to the static ring and rotates on the static ring, a transmission sleeve which is in tight fit with the rotating shaft is arranged on the rotating shaft, the periphery of the rear end face of the transmission sleeve axially extends to form an outer check ring, the outer check ring is in tight fit with the movable ring, a first step is formed on the rear end face of the transmission sleeve through the outer check ring, a containing cavity is formed among the movable ring, the first step and the outer check ring, the containing cavity is internally provided with a wave spring, and the two ends of the wave spring abut against the rear end face of the movable ring and the first step respectively. According to the mechanical sealing device for the pump, the phenomenon that the spring loses efficacy due to the fact that suspended particles in a medium block the spring is completely eradicated through the wave spring, and the service life of the mechanical sealing device is prolonged.
Description
Technical field
The utility model belongs to sealing system technical field, relates to a kind of mechanical sealing device used for pump, especially a kind of mechanical seal device being applicable under the complex environments such as papermaking, sugaring, sewage treatment.
Background technique
Mechanical seal device is by a pair of or several the end face of making relative sliding perpendicular to axle is fitted and is equipped with auxiliary seal and reaches the gland seal device of Drain Resistance in the lower maintenance of elastic force (or magnetic force) effect of hydrodynamic pressure and compensation mechanism, its seal arrangement with respect to other type has that reliability is high, long service life, mechanical friction better, wide accommodation etc. a little, be therefore widely used in the every field in life.
Along with the progress of China's industrial technology, fluid supply apparatus, just towards maximization, energy-saving, diversified future development, has therefore had more requirement and has been particular about mechanical seal device, and existing mechanical seal device mainly contains two kinds, one is built-in type, and one is external mounted.At present, normally used is mainly internally mounted mechanical seal, the rotating ring being arranged in its structure in rotating shaft seals with its relative seal face with stationary ring, wherein rotating ring can be synchronizeed with rotating shaft and rotate with rotating shaft connection through locking structure, on stationary ring rear end, be provided with the sealing compensation mechanism of the state type including spring and drive sleeve, stationary ring is axially to run through end cap exterior edge face, its seal face is positioned at end cap inner side, outside outer end, stretch in end cap outside, make Elastic Contact with the spring of the strong wind compensation mechanism that is arranged in end cap outside, inbuilt mechanical seal has good sealing effect, but there is following deficiency simultaneously, internally mounted mechanical seal device is to install in pump chamber, whole mechanical seal is all immersed in liquid, because the working medium scope of current chemical industry is wider, like this, the component of the mechanical seal device in liquid must be subject to the restriction of chemical mediator, especially spring can corrode or block because of factors such as the fibers in the viscosity of medium or medium, cause spring failure, the working life of mechanical seal is shorter.
Model utility content
The purpose of this utility model is the problems referred to above that exist for prior art, thereby has proposed a kind of mechanical sealing device used for pump that can avoid spring failure to increase the service life.
The purpose of this utility model can realize by following technical proposal: a kind of mechanical sealing device used for pump, comprise rotating shaft, described rotating shaft is provided with stationary ring, rotating ring, described rotating ring rear end is affixed on stationary ring and on stationary ring rotates, in described rotating shaft, be provided with and the friction tight drive sleeve of rotating shaft, drive sleeve ear end face periphery extends axially and is formed with outer back-up ring and outer back-up ring and rotating ring drive fit, described outer back-up ring makes drive sleeve ear end face be formed with first step, described rotating ring, between first step and outer back-up ring, be formed with receiving cavity, the two ends that are provided with wavy spring and wavy spring in described receiving cavity are against respectively on rotating ring ear end face and first step.
In above-mentioned a kind of mechanical sealing device used for pump, in the two lateral walls of described outer back-up ring, be symmetrically arranged with fastening screw trip bolt, fastening screw trip bolt is horizontally through outer back-up ring and stretches in rotating ring.
In above-mentioned a kind of mechanical sealing device used for pump, in described drive sleeve, be horizontally arranged with bath mat, described bath mat is fixedly connected with drive sleeve and drive sleeve end is pressed in rotating shaft.
In above-mentioned a kind of mechanical sealing device used for pump, on described drive sleeve madial wall, offer the first circular groove, in described the first circular groove, be provided with the first seal ring, described the first seal ring is adjacent to the first circular groove and rotating shaft respectively.
In above-mentioned a kind of mechanical sealing device used for pump, described rotating ring front-end face inner shafts is to being provided with inner shield ring, described back-up ring makes rotating ring front-end face be formed with second step, described wavy spring between outer back-up ring and inner shield ring and wavy spring one end be against on second step.
In above-mentioned a kind of mechanical sealing device used for pump, on described rotating ring madial wall, offer the second circular groove, in the second circular groove, be provided with the second seal ring, described the second seal ring is adjacent to the second circular groove and rotating shaft respectively.
Compared with prior art, the utlity model has following beneficial effect:
1, this mechanical seal device has adopted wavy spring, because wavy spring is the thin slice annular resilient metallic member being made up of some Wave crest and wave troughs, between crest and trough, there is larger gap, therefore there is good elasticity, and gap between wavy spring and each component is very little, suspended particulate in some media cannot block the gap between wavy spring self and wavy spring and component, therefore spring can normally use all the time, thereby stop the phenomenon that suspended particulate in medium blocks spring and cause spring failure, extend the working life of mechanical seal device.
2, wavy spring is arranged in the receiving cavity that first step, second step, outer back-up ring and inner shield ring form, make wavy spring and complicated external environment condition isolated, outside medium does not keep off outside receiving cavity, between wavy spring and each component, remain clean, reduce the deposition of suspended particulate in receiving cavity in medium, effectively prevented that suspended particulate from blocking wavy spring.
Brief description of the drawings
Fig. 1 is the cross-sectional view of a kind of mechanical sealing device used for pump of the utility model.
Fig. 2 is the cross-sectional view of drive sleeve in a kind of mechanical sealing device used for pump of the utility model.
Fig. 3 is the planimetric map of rotating ring in a kind of mechanical sealing device used for pump of the utility model.
In figure, 100, rotating shaft; 200, stationary ring; 300, rotating ring; 310, blind hole; 320, inner shield ring; 330, second step; 340, the second circular groove; 341, the second seal ring; 400, drive sleeve; 410, outer back-up ring; 411; The first through hole; 412, fastening screw trip bolt; 420; First step; 430, the second through hole; 431, bath mat; 440, the first circular groove; 441, the first seal ring; 500, receiving cavity; 510, wavy spring.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, a kind of mechanical sealing device used for pump of the utility model, comprise rotating shaft 100 and be installed on the stationary ring 200 in rotating shaft 100, rotating ring 300, drive sleeve 400, these rotating ring 300 ear end faces are affixed on stationary ring 200 and on stationary ring 200 and rotate, this drive sleeve 400 and rotating shaft 100 drive fits, drive sleeve 400 ear end face peripheries extend axially and are formed with outer back-up ring 410 and make whole drive sleeve 400 be axial step shape, the madial wall of outer back-up ring 410 is close on rotating ring 300 outer side walls makes outer back-up ring 410 form drive fit with rotating ring 300, this outer back-up ring 410 makes drive sleeve 400 ear end faces be formed with first step 420, rotating ring 300, between first step 420 and outer back-up ring 410, be formed with receiving cavity 500, this receiving cavity 500 is annular, wavy spring 510 is installed in receiving cavity 500, the two ends of this wavy spring 510 are against respectively on rotating ring 300 ear end faces and first step 420, wavy spring 510 is limited in receiving cavity 500 by outer back-up ring 410.
This mechanical seal device adopts said structure, between drive sleeve 400 and rotating ring 300, wavy spring 510 is installed, because wavy spring 510 is the thin slice annular resilient metallic members that are made up of some Wave crest and wave troughs, between crest and trough, there is larger gap, therefore there is good elasticity, and gap between wavy spring 510 and each component is very little, suspended particulate in some media cannot block the gap between wavy spring 510 self and wavy spring 510 and component, therefore spring can normally use all the time, thereby stop the phenomenon that suspended particulate in medium blocks spring and cause spring failure, extend the working life of mechanical seal device, wavy spring 510 is positioned at rotating ring 300, first step 420, in the receiving cavity 500 of outer back-up ring 410 and formation, make wavy spring 510 isolated with complicated external environment condition, outside medium does not keep off outside receiving cavity 500, between wavy spring 510 and each component, remain clean, reduce the deposition of suspended particulate in receiving cavity 500 in medium, effectively prevent that suspended particulate from blocking wavy spring 510.
As Fig. 1, shown in Fig. 2, in the two lateral walls of back-up ring 410, symmetry offers the first through hole 411 outside, in the first through hole 411, be separately installed with and the friction tight fastening screw trip bolt 412 of outer back-up ring 410, two fastening screw trip bolts 412 are oppositely arranged and are positioned on the diameter line of drive sleeve 400 simultaneously, on rotating ring 300 outer side walls, offer the blind hole 310 coaxial with the first through hole 411, fastening screw trip bolt 412 is horizontally through outer back-up ring 410 and stretches in this blind hole 310, herein, fastening screw trip bolt 412 stretches in blind hole 310, when being rotated with rotating shaft 100, drive sleeve 400 drive rotating ring 300 to rotate, anti-stop ring 300 separates with drive sleeve 400 and causes rotating ring 300 to lose transmission agency.
Further, laterally offer the second through hole 430 through drive sleeve 400 in drive sleeve 400 1 sides, in this second through hole 430, bath mat 431 is installed, bath mat 431 front ends are pressed on rotating shaft 100 outer surfaces, between this bath mat 431 and drive sleeve 400, be fixedly connected with by hex screw, certainly, also can connect by alternate manner, because being just affixed on all the time on stationary ring 200 and on stationary ring 200 under the elastic force effect of spring, rotating ring 300 rotates, and in mechanical seal working procedure, drive sleeve 400 is easy axial jump in rotating shaft 100, because drive sleeve 400 is connected by fastening screw trip bolt 412 with rotating ring 300, when can driving rotating ring 300 in the time that rotating shaft 100 produces displacement, drive sleeve 400 moves, rotating ring 300 is separated with stationary ring 200, rotating ring 300 cannot rotate on stationary ring 200, between rotating ring 300 and stationary ring 200, produce gap, so just, there will be leakage, therefore bath mat 431 is installed in drive sleeve 400, and be pressed in rotating shaft 100, can effectively prevent drive sleeve 400 axial jump in rotating shaft 100, rotating ring 300 is affixed on stationary ring 200 all the time, effectively prevent the generation of leakage situation.
Further, on drive sleeve 400 madial walls, laterally offer the first circular groove 440, the first seal ring 441 is installed in the first circular groove 440, this first seal ring 441 is adjacent to the first circular groove 440 and rotating shaft 100 respectively, this first seal ring 441 has strengthened the frictional force between rotating shaft 100, make drive sleeve 400 less with the relative displacement of rotating shaft 100, increased the sealability between drive sleeve 400 and rotating shaft 100 simultaneously.
As Fig. 1, shown in Fig. 3, at the front-end face inner shafts of rotating ring 300 to being provided with inner shield ring 320, this inner shield ring 320 can be one-body molded with rotating ring 300, so can improve entirety row and the intensity of inner shield ring 320 and rotating ring 300, this inner shield ring 320 makes rotating ring 300 entirety be axial step shape, this inner shield ring 320 makes rotating ring 300 front-end faces be formed with second step 330, above-mentioned wavy spring 510 is limited between outer back-up ring 410 and inner shield ring 320 and wavy spring 510 one end are against on second step 330, wavy spring 510 two ends are against on first step 420 and second step 330 simultaneously, under the elastic force effect of wavy spring 510, rotating ring 300 is affixed on stationary ring 200 all the time, under the iris action of inner shield ring 320, wavy spring 510 can not contact with rotating shaft 100, protect wavy spring 510 not to be damaged, prevent that wavy spring 510 and rotating shaft 100 from rubbing and causing wavy spring 510 cannot arrive its normal elastic effect simultaneously.
Further, on rotating ring 300 madial walls, laterally offer the second circular groove 340, the second seal ring 341 is installed in the second circular groove 340, this second seal ring 341 is adjacent to rotating shaft 100 with the second circular groove 340 respectively, the second seal ring 341 has increased the frictional force between rotating shaft 100, make the relative displacement between stationary ring 200 and rotating shaft 100 less, increased the sealing effect between stationary ring 200 and rotating shaft 100 simultaneously, prevent that mechanical seal device in the course of the work, suspended particulate in medium enters into receiving cavity 500 interior contacts with wavy spring 510 and causes suspended particulate to block wavy spring 510.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendments or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (6)
1. a mechanical sealing device used for pump, comprise rotating shaft, described rotating shaft is provided with stationary ring, rotating ring, described rotating ring rear end is affixed on stationary ring and on stationary ring rotates, it is characterized in that: in described rotating shaft, be provided with and the friction tight drive sleeve of rotating shaft, drive sleeve ear end face periphery extends axially and is formed with outer back-up ring and outer back-up ring and rotating ring drive fit, described outer back-up ring makes drive sleeve ear end face be formed with first step, described rotating ring, between first step and outer back-up ring, be formed with receiving cavity, the two ends that are provided with wavy spring and wavy spring in described receiving cavity are against respectively on rotating ring ear end face and first step.
2. a kind of mechanical sealing device used for pump according to claim 1, is characterized in that: in the two lateral walls of described outer back-up ring, be symmetrically arranged with fastening screw trip bolt, fastening screw trip bolt is horizontally through outer back-up ring and stretches in rotating ring.
3. a kind of mechanical sealing device used for pump according to claim 2, is characterized in that: in described drive sleeve, be horizontally arranged with bath mat, described bath mat is fixedly connected with drive sleeve and drive sleeve end is pressed in rotating shaft.
4. a kind of mechanical sealing device used for pump according to claim 3, it is characterized in that: on described drive sleeve madial wall, offer the first circular groove, in described the first circular groove, be provided with the first seal ring, described the first seal ring is adjacent to the first circular groove and rotating shaft respectively.
5. a kind of mechanical sealing device used for pump according to claim 4, it is characterized in that: described rotating ring front-end face inner shafts is to being provided with inner shield ring, described back-up ring makes rotating ring front-end face be formed with second step, described wavy spring between outer back-up ring and inner shield ring and wavy spring one end be against on second step.
6. a kind of mechanical sealing device used for pump according to claim 5, is characterized in that: on described rotating ring madial wall, offer the second circular groove, be provided with the second seal ring in the second circular groove, described the second seal ring is adjacent to the second circular groove and rotating shaft respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420297421.0U CN203868333U (en) | 2014-06-04 | 2014-06-04 | Mechanical sealing device for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420297421.0U CN203868333U (en) | 2014-06-04 | 2014-06-04 | Mechanical sealing device for pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203868333U true CN203868333U (en) | 2014-10-08 |
Family
ID=51649288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420297421.0U Expired - Fee Related CN203868333U (en) | 2014-06-04 | 2014-06-04 | Mechanical sealing device for pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203868333U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989822A (en) * | 2015-06-17 | 2015-10-21 | 宁波东联密封件有限公司 | Mechanical sealing device for kettle |
| CN107842524A (en) * | 2017-11-21 | 2018-03-27 | 浙江天鹰机械密封件有限公司 | Sewage mechanical sealing device used for pump |
| CN112303238A (en) * | 2019-07-24 | 2021-02-02 | 江苏鸿胜泵业科技有限公司 | Mechanical sealing device |
| CN114278733A (en) * | 2021-12-23 | 2022-04-05 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Rotary sealing device controlled by wave spring |
-
2014
- 2014-06-04 CN CN201420297421.0U patent/CN203868333U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989822A (en) * | 2015-06-17 | 2015-10-21 | 宁波东联密封件有限公司 | Mechanical sealing device for kettle |
| CN107842524A (en) * | 2017-11-21 | 2018-03-27 | 浙江天鹰机械密封件有限公司 | Sewage mechanical sealing device used for pump |
| CN112303238A (en) * | 2019-07-24 | 2021-02-02 | 江苏鸿胜泵业科技有限公司 | Mechanical sealing device |
| CN114278733A (en) * | 2021-12-23 | 2022-04-05 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Rotary sealing device controlled by wave spring |
| CN114278733B (en) * | 2021-12-23 | 2023-11-07 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Wave spring controlled rotary sealing device |
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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: 20141008 Termination date: 20150604 |
|
| EXPY | Termination of patent right or utility model |