CN103291927A - Mechanical sealing device for granular media - Google Patents
Mechanical sealing device for granular media Download PDFInfo
- Publication number
- CN103291927A CN103291927A CN201310212791XA CN201310212791A CN103291927A CN 103291927 A CN103291927 A CN 103291927A CN 201310212791X A CN201310212791X A CN 201310212791XA CN 201310212791 A CN201310212791 A CN 201310212791A CN 103291927 A CN103291927 A CN 103291927A
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- seal ring
- standstill
- fixed structure
- seal
- ring
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Abstract
Disclosed is a mechanical sealing device for granular media. A static sealing ring and a rotating sealing ring are arranged on the outer side of a rotating shaft in an axial opposite manner, and opposite axial end faces of the static sealing ring and the rotating sealing ring are sealing faces. The static sealing ring is arranged on a fixing structure in a positioning manner via an anti-rotating structure and springs arranged circumferentially at intervals, and the rotating sealing ring is in transmission connection with the rotating shaft or a shaft sleeve via a transmission structure. A flushing opening communicating with a flushing fluid supplying source via a pipeline structure is formed in the position of the sealing end face of the static sealing ring. The sealing device is particularly suitable for sealing of fluid media containing solid granules and/or with crystallization tendency properties; by flushing of flushing fluid in appropriate forms discharged from the flushing opening formed on the sealing end face, granules can be effectively prevented from gathering at the sealing end face, and the end face can be effectively prevented from crystallizing.
Description
Technical field
The present invention relates to a kind of mechanical seal structure, particularly a kind of mechanical seal device that contains particle and/or have the liquid medium of crystallization proclivity properties that adapts to.
Background technique
In modern industry is used, particularly in carrying high temperature, high pressure or poisonous fluid device, adopted the end surface mechanical sealing system that is realized by standstill seal ring and rotating seal ring more.The basic structure of this mechanical seal includes in the running shaft outside and is provided with standstill seal ring and rotating seal ring with axial relative mode, and its relative axial end is sealing surface.Standstill seal ring wherein is arranged on the fixed structures such as standstill seal ring seat or end cover through rotation prevention structure with along the spring location that the circle spacing arranges, and rotating seal ring is in transmission connection through drive mechanism and running shaft axle sleeve.The sealing structure can be used for the contact-type mechanical seal of state type as required, or for different situations such as hydrostatic mechanical seals.In some commercial Application, can contain in the pumped medium or even a large amount of solid particles impurity, and/or contain the composition of easy crystallization tendency.Conventional mechanical seal structure was worked in these media after a period of time, and have the solid particles thing between its seal face and gather, and/or because it is responsive and between seal face, produce crystalline material to the temperature variation of seal face.These solid particles things and/or crystal are easy to destroy the planeness of seal face, cause end wear, and the life-span reduces, and are difficult to guarantee the conventional proper functioning that is sealed in these media.
Summary of the invention
At above-mentioned situation, a kind of providing is provided adapts to the mechanical seal structure that contains the solid particles thing and/or have the liquid medium of crystallization tendency feature, make sealing configuration in this type of liquid medium, avoid the solid particles thing to gather and/or crystallization at the seal face position, guarantee the proper functioning of sealing.
The present invention is used for the mechanical seal device of granule medium, is to be the further improvement that carry out on the basis with conventional end surface mechanical sealing structure.Basic structure is the outside at running shaft equally, and being provided with its relative axial end of standstill seal ring and rotating seal ring with axial relative mode is sealing surface.The standstill seal ring is arranged on the fixed structure through rotation prevention structure with along the spring location that the circle spacing arranges, and wherein fixed structure is preferably end cover; Rotating seal ring is in transmission connection through drive mechanism and running shaft or axle sleeve.Wherein, offer the rinse mouth that structure and washing solution by the road provide the source to be connected at the seal face position of standstill seal ring.
Said pipeline structure in the said structure preferably is adopted as the coil pipe type structure of coiling outside the standstill seal ring.Because this coil pipe type structure can have certain floatability, thereby can not influence the floatability of stationary ring.
In addition, above-mentioned said pipeline structure for delivery of washing solution, can also adopt with the fixed structure that is arranged at location standstill seal ring in and the washing solution delivery outlet ways of connecting that provides the source to be communicated with washing solution.
For making said structure have bigger accommodation, the above-mentioned spring that arranges in the fixed structure upper edge circle spacing of said location standstill seal ring is adopted as preferably that be arranged at respectively can be in the spring seat of this fixed structure adjusted axial position.Better mode is that spring seat is assemblied on the said fixed structure threadably.According to the difference of flushing flow rate, by the screw thread rotation number of turns (or other regulative mode) of Regulation spring seat, realize the adjusting to spring force, guarantee between the effect lower seal end face of washing solution, still can be embodied as well the required applying of sealing.
Further, for the location fixed structure of standstill seal ring is set said, be slidingly matched position surface-coated of itself and standstill seal ring wear-resistant material layer is arranged, as adopting modes such as spraying, surfacing at surperficial coated with hard alloy, Cr
3C
2Deng high hardness wear-resisting material coating commonly used at present.
The position that is slidingly matched of end cover fixed structure and the standstill seal ring of standstill seal ring is set in said location, usually all be provided with the annular seal as forms such as O shape rubber seal, more preferably between this annular seal and end cover fixed structure, also be provided with friction factor simultaneously less than the support ring of this annular seal friction factor, as support ring of materials such as engineering plastics etc., constituted the floating seal of standstill seal ring jointly by the support ring of forms such as annular seals such as O-ring seals and engineering plastics.
Because Sealing commonly used such as O shape rubber seal has certain pre compressed magnitude, it directly contacts slip with fixed structure such as metallic material end cover, because there being friction factor bigger and fragile.Be slidingly matched to be provided with between the position in this contact of said fixed structure and have the more support ring (as materials such as engineering plastics) of low coefficient of friction (as being lower than rubber seal commonly used) material, and/or be coated with above-mentioned high hardness materials such as cemented carbide in the sliding contacting part site surface of this fixed structure and support ring, to be conducive to all guarantee that the standstill seal ring has higher unsteady performance, and strengthen the wear resistance at fixed structure and standstill seal ring floating seal place.
Be appreciated that thus, the seal arrangement of said structure of the present invention by the washing solution of appropriate format being delivered to by the road the rinse mouth of seal face, washes seal face, can effectively avoid particle in the gathering of seal face place, and/or effectively prevent from crystallization occurring in end face area.The washing solution delivery line of modes such as employing coil pipe can also make flushing line possess the performance of well floating, and the floatability to static components does not impact.Further by the elastic force of spring seat Regulation spring, make under the different situation of flushing flow rate, the applying that seal face can both be good guarantees the normal operation of sealing, has further enlarged the accommodation of above-mentioned seal arrangement.In addition, surface-coated at the position of the sliding contact of Sealings such as fixed structures such as gland and seal ring have a wear-resistant material layer, and/or after Sealing and fixed structure sliding contacting part interdigit further add the support ring of low coefficient of friction, can both be conducive to further guarantee and improve standstill seal ring (assembly) have higher unsteady performance and strengthen wear resistance, increase the service life.
Below in conjunction with the embodiment of accompanying drawing illustrated embodiment, foregoing of the present invention is described in further detail again.But this should be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following example.Do not breaking away under the above-mentioned technological thought situation of the present invention, various replacements or change according to ordinary skill knowledge and customary means are made all should comprise within the scope of the invention.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention's mechanical seal device of being used for granule medium.
Embodiment
As shown in the figure be the basic structure that the present invention is used for the mechanical seal device of granule medium.Axle sleeve 2 outsides cooperate and be provided with O-ring seals 15 in fitting surface with running shaft 1 transmission are provided with standstill seal ring 8 and rotating seal ring 9 with axial relative mode, and its relative axial end is sealing surface.Standstill seal ring 8 is located through rotation prevention structure 14 with along the spring 6 of circle spacing setting and is arranged on the fixed structure (being end cover shown in the figure) 5, during wherein but each spring 6 all is assemblied in spring seat 3 on the said fixed structure 5 with adjusting axle to the engage thread of position respectively, therebetween and be provided with O-ring seals 4.Rotating seal ring 9 is in transmission connection with running shaft axle sleeve 2 through the drive mechanism 11 of forms such as driving pin, and 2 on rotating seal ring 9 and axle sleeve are provided with O shape rubber seal 10.Offer at the seal face position of standstill seal ring 8 through coiling the coil pipe type structural tube line structure 7 outside standstill seal ring 8, with in the fixed structure (end cover) 5 that is arranged at location standstill seal ring 8 and the rinse mouth that is connected with washing solution delivery outlet that washing solution provides the source to be communicated with.The fixed structure (end cover) 5 that standstill seal ring 8 is set in the location is used for the surface, position that is slidingly matched with standstill seal ring 8, is coated with cemented carbide, Cr
3C
2Wear-resistant material layer wear-resistant material layer 16 etc. the high hardness material.Be provided with the annular seal 12 of common type such as O shape rubber seal being slidingly matched of this fixed structure (end cover) 5 and standstill seal ring 8 between the position, and also be provided with friction factor simultaneously less than the support ring 13 of the materials such as engineering plastics of these annular seal 12 friction factor at this annular seal 12 and 5 of fixed structures (end cover).
Claims (8)
1. the mechanical seal device that is used for granule medium, be provided with standstill seal ring (8) and rotating seal ring (9) in running shaft (1) outside with axial relative mode, its relative axial end is sealing surface, standstill seal ring (8) is arranged on the fixed structure (5) through rotation prevention structure (14) with along spring (6) location that the circle spacing arranges, rotating seal ring (9) is in transmission connection through drive mechanism (11) and running shaft or axle sleeve (2), it is characterized in that offering at the seal face position of standstill seal ring (8) rinse mouth that structure (7) and washing solution by the road provide the source to be connected.
2. mechanical seal device as claimed in claim 1 is characterized in that said pipeline structure (7) is for coiling the coil pipe type structure outside standstill seal ring (8).
3. mechanical seal device as claimed in claim 1 is characterized in that said pipeline structure (7) and is arranged in the fixed structure (5) of locating standstill seal ring (8) and with washing solution providing the washing solution delivery outlet of source connection to be connected.
4. mechanical seal device as claimed in claim 1, it is characterized in that being arranged at respectively can be in the spring seat (3) of this fixed structure (5) adjusted axial position at the spring (6) of fixed structure (5) the upper edge circle spacing of said location standstill seal ring (8) setting.
5. mechanical seal device as claimed in claim 4 is characterized in that said spring seat (3) is assemblied on the said fixed structure (5) threadably.
6. as the described mechanical seal device of one of claim 1 to 5, it is characterized in that said fixed structure (5) for location standstill seal ring (8) is end cover.
7. mechanical seal device as claimed in claim 6 is characterized in that the fixed structure (5) of said location standstill seal ring (8) is gone up the surface, position that is slidingly matched that is used for standstill seal ring (8), is coated with wear-resistant material layer (16).
8. mechanical seal device as claimed in claim 7, it is characterized in that being provided with annular seal (12) between the position fixed structure (5) and being slidingly matched of standstill seal ring (8) of said location standstill seal ring (8), and between this annular seal (12) and fixed structure (5), also be provided with friction factor simultaneously less than the support ring (13) of this annular seal (12) friction factor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310212791.XA CN103291927B (en) | 2013-06-01 | 2013-06-01 | For the mechanical seal device of granule medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310212791.XA CN103291927B (en) | 2013-06-01 | 2013-06-01 | For the mechanical seal device of granule medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103291927A true CN103291927A (en) | 2013-09-11 |
| CN103291927B CN103291927B (en) | 2016-01-06 |
Family
ID=49093274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310212791.XA Active CN103291927B (en) | 2013-06-01 | 2013-06-01 | For the mechanical seal device of granule medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103291927B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799444A (en) * | 2018-08-30 | 2018-11-13 | 浙江工业大学 | Planetary differential radial double mechanical seal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2298389Y (en) * | 1997-05-09 | 1998-11-25 | 自贡机械密封件厂 | Machinery sealing device with anti-block and abrasion resistant |
| JP2006283896A (en) * | 2005-04-01 | 2006-10-19 | Nippon Pillar Packing Co Ltd | Mechanical seal |
| CN201696282U (en) * | 2010-05-27 | 2011-01-05 | 宁波伏尔肯机械密封件制造有限公司 | Sealing device |
| CN203335862U (en) * | 2013-06-01 | 2013-12-11 | 四川日机密封件股份有限公司 | Mechanical sealing device used for granular media |
-
2013
- 2013-06-01 CN CN201310212791.XA patent/CN103291927B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2298389Y (en) * | 1997-05-09 | 1998-11-25 | 自贡机械密封件厂 | Machinery sealing device with anti-block and abrasion resistant |
| JP2006283896A (en) * | 2005-04-01 | 2006-10-19 | Nippon Pillar Packing Co Ltd | Mechanical seal |
| CN201696282U (en) * | 2010-05-27 | 2011-01-05 | 宁波伏尔肯机械密封件制造有限公司 | Sealing device |
| CN203335862U (en) * | 2013-06-01 | 2013-12-11 | 四川日机密封件股份有限公司 | Mechanical sealing device used for granular media |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799444A (en) * | 2018-08-30 | 2018-11-13 | 浙江工业大学 | Planetary differential radial double mechanical seal |
| CN108799444B (en) * | 2018-08-30 | 2024-03-26 | 浙江工业大学 | Planetary differential radial double-end-face mechanical seal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103291927B (en) | 2016-01-06 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Huang Zepei Inventor after: Wu Xixi Inventor after: Chen Kan Inventor after: Zhou Guofeng Inventor after: Wang Chao Inventor after: Zhang Junkai Inventor after: Wang Xu Inventor after: Xue Xiaopan Inventor after: Li Zhishan Inventor after: Liu Wei Inventor after: Cao Tingfa Inventor before: Huang Zepei Inventor before: Zhang Junkai Inventor before: Wang Xu Inventor before: Wang Chao Inventor before: Xue Xiaopan Inventor before: Li Zhishan Inventor before: Liu Wei |
|
| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150916 Address after: Vuko Xisi road Chengdu City, Sichuan province 610045 No. 8 Applicant after: Sichuan Sunny Seal Co., Ltd. Applicant after: Zhongkehua Nuclear Power Technology Institute Co., Ltd. Address before: Vuko Xisi road Chengdu City, Sichuan province 610045 No. 8 Applicant before: Sichuan Sunny Seal Co., Ltd. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Vuko Xisi road Chengdu City, Sichuan province 610045 No. 8 Co-patentee after: China Nuclear Power Technology Research Institute Co.,Ltd. Patentee after: Zhongmi Holding Co., Ltd Address before: Vuko Xisi road Chengdu City, Sichuan province 610045 No. 8 Co-patentee before: China Nuclear Power Technology Research Institute Co.,Ltd. Patentee before: SICHUAN SUNNY SEAL Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |