CN201363306Y - Spiral pump feeding compression mechanical sealing device - Google Patents
Spiral pump feeding compression mechanical sealing device Download PDFInfo
- Publication number
- CN201363306Y CN201363306Y CNU200920011155XU CN200920011155U CN201363306Y CN 201363306 Y CN201363306 Y CN 201363306Y CN U200920011155X U CNU200920011155X U CN U200920011155XU CN 200920011155 U CN200920011155 U CN 200920011155U CN 201363306 Y CN201363306 Y CN 201363306Y
- Authority
- CN
- China
- Prior art keywords
- axle sleeve
- overcoat
- sealing device
- mechanical sealing
- spiral pump
- 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 - Fee Related
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Abstract
A spiral pump feeding compression mechanical sealing device of the utility model comprises a pair of sealing mechanisms which are perpendicular and in which a movable rings is matched with a stationary ring, wherein the movable ring is installed and connected with a shaft or a shaft sleeve, the stationary ring is installed and connected with an end cover or a stationary ring seat. The spiral pump feeding compression mechanical sealing device is characterized in that a shaft sleeve (6) with male threads is installed and connected on the shaft or the shaft sleeve, an outer sleeve (7) which is interstitially matched with the male thread shaft sleeve (6) in a sliding mode is fixedly installed on a machine body to form a spiral pump which is used for pushing the liquid medium in the front cavity (A) of a sealing end face to the front lateral cavity (B) of the spiral pump, therefore the pressure of the front cavity (A) of the sealing end face and the pressure difference between the front and rear ends of the sealing end face are reduced, thus the requirements for mechanical sealing mechanisms are lightened, the sealing effect of the mechanical sealing device is enhanced, the life time is prolonged, meanwhile, the application capability of the mechanical sealing device to high pressure media is improved, and the cost is reduced.
Description
Technical field
The utility model relates to mechanical seal device, particularly a kind of mechanical seal device, promptly a kind of mechanical seal device that reduces sealed operating pressure with step-down mechanism.
Background technique
Having rotatingshaft to carry in the equipment of liquid medium, rotatingshaft needs the seal arrangement sealing with the outside place that is connected, and mainly adopts mechanical seal device to carry out shaft sealing when particularly pressure medium is higher.
Mechanical seal device is by at least one pair of rotating ring and stationary ring perpendicular to axis, and rotating ring or stationary ring encircle by way of compensation under nose balance element (spring or bellows) effect and make dynamic and static ring keep the formation that is rotatably assorted of sliding of fitting, prevent the device that working liquid body leaks along running shaft, rotating ring is installed with axle or axle sleeve and is connected, stationary ring is installed with end cap or stationary seat and is connected, and rotates the seal action of finishing running shaft by rotating ring and stationary ring abrasive end face slide relative.
The ante-chamber of prior art mechanical seal device seal face (dynamic and static ring frictional fit end face) all is to lead to mutually with the hyperbaric chamber that is transferred medium (district), the ante-chamber of mechanical seal device bears higher pressure, the pressure reduction at mechanical seal device seal face two ends is big more, influence and requirement to mechanical seal device are just big more, pressure high more working life that influences mechanical seal device more, and need that the relative manufacture cost of configuration is higher, the structure mechanical seal device of complicated high pressure resistant structure.And the pressure reduction at mechanical seal device end-blocking face two ends is reduced or balance, and then can alleviate requirement greatly to shaft sealer, improve the sealing effect of mechanical seal device greatly, reduce or do not need the corresponding attached facility that helps.
The model utility content
The purpose of this utility model is to improve at above-mentioned the deficiencies in the prior art, and a kind of mechanical seal device working pressure that reduces is provided, and improves the mechanical seal device operating conditions, the spiral pump pressure reducing mechanical sealing device that increases the service life.
The utility model comprises at least one pair of rotating ring and stationary ring perpendicular to axis, and rotating ring or stationary ring encircle under nose balance element (spring or bellows) effect by way of compensation, rotating ring is installed with axle or axle sleeve and is connected, stationary ring and end cap or stationary seat are installed the sealing that connects and composes and are constituted, it is characterized in that connection is provided with the outside thread axle sleeve on axle or axle sleeve, on body, be installed with the overcoat that cooperates with this outside thread axle sleeve glade plane space, threaded sleeve or put outward and offer the backflow throttle orifice outside, outside thread axle sleeve rotate with axle and cooperate the formation volute pump with overcoat.
The utility model outside thread axle sleeve cooperates the formation volute pump with the axle rotation with overcoat, push the liquid medium pumping in rotating ring and the stationary ring fitted seal end face front end chamber A to volute pump front side chamber B, thereby reduce the pressure of rotating ring and stationary ring fitted seal end face front end chamber A, by threaded sleeve or put the backflow throttle orifice offered outward and regulate pressure in the seal face front end chamber A, reduce the pressure reduction of rotating ring and stationary ring fitted seal end face front end and back end, make rotating ring and stationary ring fitted seal mechanism be in work under the low-pressure state, alleviate requirement greatly to mechanical sealing mechanism, improve the sealing effect of mechanical sealing mechanism greatly, increase the service life, reduce or do not need the corresponding attached facility that helps, simultaneously improve the application power of mechanical seal device greatly, reduce cost high-pressure medium.
Description of drawings
Fig. 1 is the utility model example structure schematic representation, and it has represented that spring compensation rotating ring is a compensated loop.
Fig. 2 is the utility model example structure schematic representation, and it has represented that spring compensation rotating ring is a compensated loop.
Fig. 3 is the utility model example structure schematic representation, and it has represented that bellows compensation rotating ring is a compensated loop.
Fig. 4 is the utility model example structure schematic representation, and it has represented to be provided with the seal arrangement that two pairs of dynamic and static rings cooperate.
Fig. 5 is the utility model example structure schematic representation, and it has represented that bellows compensation stationary ring is a compensated loop.
Embodiment
The utility model comprises at least one pair of rotating ring 1 and stationary ring 2 perpendicular to axis, and rotating ring or stationary ring encircle under nose balance element (spring or bellows) effect by way of compensation, rotating ring 1 is installed with axle or axle sleeve 3 and is connected, stationary ring 2 is installed the sealing mechanism that connects and composes with end cap 5 or stationary seat 4, it is characterized in that connection is provided with on axle or axle sleeve 3 is with externally threaded axle sleeve 6, on body 9, be installed with the overcoat 7 that cooperates with these outside thread axle sleeve 6 glade plane spaces, offer backflow throttle orifice 8 on threaded sleeve 6 or the overcoat 7 outside, throttle orifice 8 evenly distributes along circumference and offers, and outside thread axle sleeve 6 cooperates the formation volute pump with the axle rotation with overcoat 7.
The utility model offer on overcoat 7 endoporus with outside thread axle sleeve 6 on the opposite internal thread 70 of screw thread 60 directions, it cooperates screw thread 60 working efficiencies on outside thread axle sleeve 6 higher.Screw thread the 60, the 70th, single screw thread or the multiple thread offered on outside thread axle sleeve 6 and the overcoat 7.
Shown in accompanying drawing 1 embodiment, be spring type mechanical sealing device, spring 21 compensation rotating rings 1 are compensated loop, rotating ring 1 is installed on the throw-out collar 22, throw-out collar 22 and axle sleeve 3 fixed installations, and stationary ring 2 is installed on the end cap 5, connection is provided with and is with externally threaded axle sleeve 6 on axle 3 ', be installed with the overcoat 7 that cooperates with these outside thread axle sleeve 6 glade plane spaces on body 9, offer backflow throttle orifice 8 on the threaded sleeve 6 outside, outside thread axle sleeve 6 cooperates the formation volute pump with the axle rotation with overcoat 7.
Shown in accompanying drawing 2 embodiments, its essential structure is with identical shown in accompanying drawing 1 embodiment, different is offer on overcoat 7 endoporus with outside thread axle sleeve 6 on the opposite internal thread 70 of screw thread 60 directions, outside thread axle sleeve 6 rotates with axle and cooperates the formation volute pump with overcoat 7.
Shown in accompanying drawing 3 embodiments, be the bellows type mechanical seal device, bellows 23 compensation rotating rings 1 are compensated loop, rotating ring 1 is installed on the bellows compensated loop 24, bellows compensated loop 24 and axle sleeve 3 fixed installations, stationary ring 2 is installed on the end cap 5, connection is provided with and is with externally threaded axle sleeve 6 on axle 3 ', on body 9, be installed with the overcoat 7 that cooperates with these outside thread axle sleeve 6 glade plane spaces, offer on overcoat 7 endoporus with outside thread axle sleeve 6 on the opposite internal thread 70 of screw thread 60 directions, offer backflow throttle orifice 8 on overcoat 7, outside thread axle sleeve 6 cooperates the formation volute pump with the axle rotation with overcoat 7.
Accompanying drawing 4 is shown in the embodiment, for being provided with the series hybrid formula sealing mechanism that two pairs of dynamic and static rings cooperate, connection is provided with and is with externally threaded axle sleeve 6 on axle sleeve 3, on body 9, be installed with the overcoat 7 that cooperates with these outside thread axle sleeve 6 glade plane spaces, offer on overcoat 7 endoporus with outside thread axle sleeve 6 on the opposite internal thread 70 of screw thread 60 directions, offer backflow throttle orifice 8 on the threaded sleeve 6 outside, outside thread axle sleeve 6 cooperates the formation volute pump with the axle rotation with overcoat 7.
Same as above, its shaft mechanical seal mechanism of the utility model can also be--quiet--movingly, quiet--moving---quiet Double End fit form.
Claims (2)
1, spiral pump pressure reducing mechanical sealing device, comprise at least one pair of rotating ring (1) and stationary ring (2) perpendicular to axis, and rotating ring or stationary ring encircle under the effect of nose balance element by way of compensation, rotating ring (1) is installed with axle or axle sleeve and is connected, stationary ring (2) is installed the sealing mechanism that connects and composes with end cap (5) or stationary seat (4), it is characterized in that going up connection at axle or axle sleeve (3) is provided with and is with externally threaded axle sleeve (6), on body (9), be installed with the overcoat (7) that cooperates with this outside thread axle sleeve (6) glade plane space, offer backflow throttle orifice (8) on threaded sleeve (6) or the overcoat (7) outside, throttle orifice (8) evenly distributes along circumference and offers, and outside thread axle sleeve (6) cooperates the formation volute pump with the axle rotation with overcoat (7).
2, spiral pump pressure reducing mechanical sealing device according to claim 1, it is characterized in that offer on overcoat (7) endoporus with outside thread axle sleeve (6) on the opposite internal thread (70) of screw thread (60) direction; The screw thread of being offered on outside thread axle sleeve (6) and the overcoat (7) (60,70) is a single screw thread, or multiple thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920011155XU CN201363306Y (en) | 2009-03-03 | 2009-03-03 | Spiral pump feeding compression mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920011155XU CN201363306Y (en) | 2009-03-03 | 2009-03-03 | Spiral pump feeding compression mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201363306Y true CN201363306Y (en) | 2009-12-16 |
Family
ID=41473970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200920011155XU Expired - Fee Related CN201363306Y (en) | 2009-03-03 | 2009-03-03 | Spiral pump feeding compression mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201363306Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678933A (en) * | 2012-04-27 | 2012-09-19 | 大连华阳光大密封有限公司 | Transmission ring for mechanical sealing |
| CN106949086A (en) * | 2017-02-27 | 2017-07-14 | 浙江大学 | A kind of combined mechanical sealing device |
-
2009
- 2009-03-03 CN CNU200920011155XU patent/CN201363306Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678933A (en) * | 2012-04-27 | 2012-09-19 | 大连华阳光大密封有限公司 | Transmission ring for mechanical sealing |
| CN106949086A (en) * | 2017-02-27 | 2017-07-14 | 浙江大学 | A kind of combined mechanical sealing device |
| CN106949086B (en) * | 2017-02-27 | 2019-06-11 | 浙江大学 | A kind of combined mechanical 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: 20091216 Termination date: 20180303 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |