CN2821302Y - External built-in inner for type mechanical seal device - Google Patents
External built-in inner for type mechanical seal device Download PDFInfo
- Publication number
- CN2821302Y CN2821302Y CN 200520035336 CN200520035336U CN2821302Y CN 2821302 Y CN2821302 Y CN 2821302Y CN 200520035336 CN200520035336 CN 200520035336 CN 200520035336 U CN200520035336 U CN 200520035336U CN 2821302 Y CN2821302 Y CN 2821302Y
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- China
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- stationary ring
- spring
- mechanical seal
- seal device
- end cap
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Abstract
The utility model relates to an external built-in internal flow type mechanical seal device. In the external built-in internal flow type mechanical seal device, a moving ring and a stationary ring which are arranged outside a rotary shaft are sealed through the opposite sealing end surfaces thereof, wherein the moving ring is connected with the rotary shaft through a locking mechanism for synchronous rotation, and the tail end of the stationary ring is provided with a stationary sealing compensation structure which comprises a spring and a corresponding spring seat; the stationary ring penetrates through the outer end surface of a end cover in the axial direction, the sealing end surface of the stationary ring is positioned on the inner side of the end cover and the tail end extends out of the outside of the end cover and elastically contacts the spring in the sealing compensation structure arranged on the outer side of the end cover. As the spring is arranged outside a pump cavity without contacting media, the utility model has the characteristics of large volume of the sealing cavity, less accumulation, blockage and corrosion of media, less leakage rate of the built-in seal, etc. besides the characteristics of the external seal. The utility model saves the material cost, omits an auxiliary system, simultaneously reduces the operating cost and effectively solves the exhaustion preventing problem.
Description
Technical field
The utility model relates to a kind of mechanical seal that is used for transh pump or other rotating machinerys, particularly carries the mechanical seal of the rotating machinery of the flowing mediums such as slag liquid, river and sewage that contain small quantities of particles.
Background technique
Carry the flowing medium that contains various impurity as slag liquid, river and sewage etc. along with much more more and more industrial expansion uses pump and other rotating machinerys.Past this kind equipment custom adopts soft packing seal, but because this seal friction is big, quick abrasion, energy consumption is big, the life-span is short, leakage is serious, more and more can not adapt to modern industry reliability requirement height, the high developing direction of environmental requirement.On this kind equipment, use the trend of mechanical seal obvious day by day, 103 types that national mechanical industry standard JB/T 1472 recommends, products such as 114 types though they respectively have characteristics, but also have its significant deficiency.For example 103 type products are built-in interior dress inner flow seal, has the less advantage of leakage rate, but because of the spring in the sealing compensation structure directly contacts with medium, be subject to the burn into abrasion of medium and accumulation, the congestion affects of crystallization and media particle, therefore often need select high-grade material for use, also must dispose necessary auxiliary systems such as flushing, and consume a large amount of washing solutions and corresponding power and maintenance cost, operating cost is bigger.114 type products are the outer flow pattern sealing of external, and it is outer and contact with medium be its significant advantage that the spring in its sealing compensation structure is arranged at device, but exist the seal leakage amount bigger, is suitable for defectives such as pressure is little.These mechanical seals using effect on transh pump is all not so good, and the Dimensions of these two kinds of products is limited in 120mm respectively and below the 70mm, these problems have hindered mechanical seal applying on transh pump.
The model utility content
At above-mentioned situation, the utility model will provide a kind of interior streamed new structure mechanical seal device of dress in the external that adopts, make it can have the characteristics of external and built-in sealing simultaneously concurrently and overcome its deficiency, it is bigger both to have had the Seal cage volume, the advantage that medium is difficult for accumulation, stops up, corrodes and denude, also have characteristics such as the leakage rate of built-in sealing is less, both save cost of material and also saved auxiliary system, simultaneously also reduce operating cost, and can effectively solve anti-problem of finding time.
Flow pattern mechanical seal device in the dress in the utility model external, its basic structure is still by being arranged at the outer rotating ring of running shaft and seals with its relative seal face with stationary ring, wherein rotating ring is connected with running shaft and can rotates synchronously through locking structure, and the sealing compensation structure of the state type that comprises spring and respective springs seat is arranged in stationary ring tail end arranged outside.Wherein, said this stationary ring makes its seal face be positioned at the end cap inboard axially to run through the end cap exterior edge face, and tail end is stretched in the end cap outside outward, and makes Elastic Contact with the spring assembly of the sealing compensation structure that is arranged in the end cap outside.The plurality of optional that is arranged at the end cap outside at the sealing collocation structure is selected in the mode, one can be for reference embodiment in, the sealing collocation structure adopts is to make it be connected this easy mode and realize through positioning at spring seat and fastening structures such as tight fixed bolt between end cap.
Though on principle, above-mentioned stationary ring can directly cooperate with end cap, and collocation structure also directly is positioned end cap exterior edge face place, but for ease of practice of construction and installation, said this stationary ring can adopt the stationary ring cover outside being arranged at it to be connected with end cap by present usual manner in the said structure.And, can also further make to adopt between this stationary ring cover and end cap and can realize making its cooperating structure that is axially located to be located by connecting.Wherein, in a embodiment that can be for reference, can realize this cooperating structure of location between said stationary ring cover and end cap, be linkage structures such as a kind of structure of the step type of mutual block card in the axial direction, and corresponding clamping bolt.Certainly do not get rid of the structure that is located by connecting that it is locked in the axial direction mutually that can also adopt other appropriate format yet.
Employing makes a remarkable and significant advantage that can realize axially going up the positioning connection that locks mutually between stationary ring cover and end cap, be can solve effectively prevent pump the starting and in service sometimes the appearance find time, cause stationary ring to be subjected to the barometric pressure effect and occur in move problem.On this basis, further can also between said this fastening structure and fastened stationary ring cover and end cap, be provided with fastening adjustment structures such as the pad that can adjust fastening degree, clamping plate.
On the said structure basis, further improvement can also have, and for example is provided with the spacing throw-out collar of opposing end surface with the stationary ring cover between the spring in said this stationary ring tail end and said sealing compensation structure.
At the running shaft diameter of equipment hour, spring in the said sealing compensation structure can use the big spring form that is nested with, for the running shaft diameter when big, spring in the sealing compensation structure then can adopt along the structural type of several little springs of circumference setting, so both solved large-diameter and made the problem of difficulty with big spring, can also shorten axial dimension, do not exist little spring to be subjected to the worry of dielectric corrosion quickening and particulates plug yet, solved the important topic that the mechanical seal product uses on the transh pump of large-diameter, and the transh pump large scale development also is an inexorable trend, and the utility model product has just in time adapted to this requirement.
Below, foregoing of the present utility model is described in further detail again by embodiment by the accompanying drawing illustrated embodiment.But this should be interpreted as that the scope of the above-mentioned theme of the utility model only limits to following example.Do not breaking away under the above-mentioned technological thought situation of the utility model, various replacements or change according to ordinary skill knowledge and customary means are made all should be included in the scope of the present utility model.
Description of drawings
Fig. 1 is a kind of structural representation of the interior flow pattern mechanical seal device of dress in the utility model external.
Embodiment
As shown in the figure, in this external in the dress flow pattern mechanical seal device by be arranged at the outer rotating ring 2 of pump shaft (or axle sleeve) 16, the friction pair that stationary ring 3 is formed with its relative seal face 15 places in the pump chamber, wherein rotating ring 2 is fastenedly connected through Cock screw 1 and pump shaft (or axle sleeve) 16, rotating ring is rotated with pump shaft (or axle sleeve), O shape circle 14 is the rotating ring auxiliary seal ring, can stop medium to leak toward atmospheric side along the gap between week and pump shaft (or axle sleeve) 16 peripheries in the rotating ring 2.Because flowing medium is in the periphery (high pressure side) of dynamic and static ring, and the interior Zhou Zeyu atmosphere of dynamic and static ring is communicated with (low voltage side), so the flow direction of dielectric leakage be that the ecto-entad opposite with the centrifugal force direction flow is in-flow, and leakage rate is less relatively.Stationary ring 3 is configured in the stationary ring of pump cover 13 inner chambers and overlaps 4 axially to run through pump cover 13 exterior edge faces, and its tail end is stretched in the outside of pump cover 13 outward.Wherein this stationary ring cover 4 and pump cover 13 are through the ledge structure 17 of block card and corresponding housing screw 9 and backing plate 10 are connected can realize the mutual in the axial direction mode that locks mutually therebetween.Be disposed at this all in the pump cover 13 stationary ring cover 4 and can play the effect of circumferential location, and pass through the auxiliary seal effect of O shape circle 11,12, prevent the interior periphery leakage of medium along stationary ring cover 4 to stationary ring.Spring seat 8 in the sealing compensation structure is arranged at the stationary ring that is connected week in the pump cover 13 through bolt 7 location and overlaps place, 4 exterior edge faces, the tail end of stationary ring 3 bears the thrust of the spring 6 that transmits through throw-out collar 5, this spring 6 is arranged in the spring seat 8, between spring seat 6 and throw-out collar 5, and can be provided with between the opposing end surface of throw-out collar 5 and stationary ring cover 4 and does not wait gauge structure or the mutual spacing structure of the energy of other suitable mode.The elastic force of spring 6 promotes stationary ring 3 by throw-out collar, makes the stationary ring 3 and the seal face 15 of rotating ring 2 keep correct applying, with the leakage of effective prevention medium.This bolt 7 that spring seat 8 and stationary ring cover are 4 can play the effect of anti-rotation again to throw-out collar 5 to spring seat 8 location.At above-mentioned housing screw 9 and the stationary ring cover 4 that is positioned fastening and a pressuring action and the anti-loosening backing plate 10 of 13 settings of end cap, can prevent effectively that when pump depletion atmospheric pressure promotes stationary ring cover 4 play in pump chamber and causes spring force to strengthen, even spring presses phenomenon such as doubling-up to cause the hurried increase of elastic force to cause seal failure.This spring 6 in the sealing compensation structure, the diameter according to pump shaft (or axle sleeve) 16 can be adopted as the big spring spare that is nested with setting, or the structural type of a plurality of little springs that are provided with along circumference.
Because the sealing compensation spring 6 in the said apparatus is arranged at atmosphere direction side, do not contact with medium, the working environment of spring is fine, therefore can be according to the diameter or the usage requirement of pump shaft (or axle sleeve) 16, select the normally used big spring of mechanical seal for use, or the structural type of a plurality of little springs is set along circumference, can adjust elastic force easily by special screw.And, solved satisfactorily and prevented that stationary ring is enclosed within the play that occurs when finding time and causes the problem of seal failure by axially locating to stationary ring cover.
Claims (9)
1. flow pattern mechanical seal device in adorning in the external, being arranged at the outer rotating ring (2) of running shaft (16) in the structure seals with its relative seal face (15) with stationary ring (3), wherein rotating ring (2) is connected with running shaft (16) and can rotates synchronously through locking structure (1), be provided with the sealing compensation structure of the state type that comprises spring (6) and respective springs seat (8) at stationary ring (3) tail end, it is characterized in that stationary ring (3) is axially to run through end cap (13) exterior edge face, its seal face (15) is positioned at end cap (13) inboard, tail end is stretched in end cap (13) outside outward, makes Elastic Contact with the spring (6) of the sealing compensation structure that is arranged in end cap (13) outside.
2. flow pattern mechanical seal device in the dress in the external as claimed in claim 1 is characterized in that said sealing compensation structure is located by connecting through the linkage structure (7) between spring seat (8) end cap (13).
3. flow pattern mechanical seal device in the dress in the external as claimed in claim 1, it is characterized in that the stationary ring cover (4) of said stationary ring (3) outside being arranged at it and end cap (13) realization radial location, the cooperating structure through realizing the location between stationary ring cover (4) and end cap (13) is located by connecting.
4. flow pattern mechanical seal device in the dress is characterized in that being respectively arranged with Sealing (11,12) between said stationary ring cover (4) and end cap (13) and the stationary ring (3) in the external as claimed in claim 3.
5. flow pattern mechanical seal device in the interior dress of external as claimed in claim 3 is characterized in that realizing between said stationary ring cover (4) and end cap (13) that the cooperating structure of location is the ledge structure (17) and the corresponding fastening structure (9) of mutual block card vertically.
6. flow pattern mechanical seal device in the dress in the external as claimed in claim 5 is characterized in that being provided with fastening adjustment structure (10) between said fastening structure (9) and fastened stationary ring cover (4) and end cap (13).
7. as flow pattern mechanical seal device in the dress in the described external of one of claim 1 to 6, it is characterized in that being provided with usually between the spring (6) in said stationary ring (3) tail end and the said sealing compensation structure with the spacing throw-out collar (5) of the opposing end surface of stationary ring cover (4).
8. as flow pattern mechanical seal device in the dress in the described external of one of claim 1 to 6, it is characterized in that the big spring structure of spring (6) in the said sealing compensation structure for being nested with.
9. as flow pattern mechanical seal device in the dress in the described external of one of claim 1 to 6, it is characterized in that the spring (6) in the said sealing compensation structure is the structural type of some little springs of being provided with along circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035336 CN2821302Y (en) | 2005-09-02 | 2005-09-02 | External built-in inner for type mechanical seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035336 CN2821302Y (en) | 2005-09-02 | 2005-09-02 | External built-in inner for type mechanical seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2821302Y true CN2821302Y (en) | 2006-09-27 |
Family
ID=37017856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520035336 Expired - Lifetime CN2821302Y (en) | 2005-09-02 | 2005-09-02 | External built-in inner for type mechanical seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2821302Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101225879B (en) * | 2007-12-04 | 2011-02-02 | 丹东克隆集团有限责任公司 | Compensated ring component of spring mechanical sealing device |
| CN105156335A (en) * | 2015-09-01 | 2015-12-16 | 江苏海天泵阀制造有限公司 | Chemical process pump for alkali liquor circulation |
| CN106351847A (en) * | 2016-11-01 | 2017-01-25 | 天津市合润科技有限责任公司 | Mechanical sealing device with axial adjusting function for large-sized dredger sludge pump |
| CN106481818A (en) * | 2016-11-01 | 2017-03-08 | 天津市合润科技有限责任公司 | A kind of external stationary ring nose balance mechanism on mechanically-sealing apparatus |
-
2005
- 2005-09-02 CN CN 200520035336 patent/CN2821302Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101225879B (en) * | 2007-12-04 | 2011-02-02 | 丹东克隆集团有限责任公司 | Compensated ring component of spring mechanical sealing device |
| CN105156335A (en) * | 2015-09-01 | 2015-12-16 | 江苏海天泵阀制造有限公司 | Chemical process pump for alkali liquor circulation |
| CN106351847A (en) * | 2016-11-01 | 2017-01-25 | 天津市合润科技有限责任公司 | Mechanical sealing device with axial adjusting function for large-sized dredger sludge pump |
| CN106481818A (en) * | 2016-11-01 | 2017-03-08 | 天津市合润科技有限责任公司 | A kind of external stationary ring nose balance mechanism on mechanically-sealing apparatus |
| CN106481818B (en) * | 2016-11-01 | 2017-12-01 | 天津市合润科技有限责任公司 | A kind of external stationary ring nose balance mechanism on mechanically-sealing apparatus |
| CN106351847B (en) * | 2016-11-01 | 2018-08-31 | 天津市合润科技有限责任公司 | The mechanically-sealing apparatus of large dredger dredge pump with axially adjustable function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110117 Address after: 610041 No. 1, mayor Yi Street, Sichuan, Chengdu Co-patentee after: Sichuan Sealing Technology Inst. Patentee after: Sichuan Sunny Seal Co., Ltd. Address before: 610041 No. 1, mayor Yi Street, Sichuan, Chengdu Co-patentee before: Sichuan Sealing Technology Inst. Patentee before: Riji Sealing Element Co., Ltd., Sichuan |
|
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: SICHUAN SEALING TECHNOLOGY INST. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110318 Address after: 610041 No. 1, mayor Yi Street, Sichuan, Chengdu Patentee after: Sichuan Sunny Seal Co., Ltd. Address before: 610041 No. 1, mayor Yi Street, Sichuan, Chengdu Co-patentee before: Sichuan Sealing Technology Inst. Patentee before: Sichuan Sunny Seal Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: Vuko Xisi road Chengdu City, Sichuan province 610045 No. eight Patentee after: Sichuan Sunny Seal Co., Ltd. Address before: 610041 No. 1, mayor Yi Street, Sichuan, Chengdu Patentee before: Sichuan Sunny Seal Co., Ltd. |
|
| CX01 | Expiry of patent term |
Expiration termination date: 20150902 Granted publication date: 20060927 |
|
| EXPY | Termination of patent right or utility model |