CN201747900U - Deceleration seal - Google Patents
Deceleration seal Download PDFInfo
- Publication number
- CN201747900U CN201747900U CN2009201280127U CN200920128012U CN201747900U CN 201747900 U CN201747900 U CN 201747900U CN 2009201280127 U CN2009201280127 U CN 2009201280127U CN 200920128012 U CN200920128012 U CN 200920128012U CN 201747900 U CN201747900 U CN 201747900U
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- CN
- China
- Prior art keywords
- main shaft
- seal
- sealing
- deceleration
- sleeve
- 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
The utility model relates to a deceleration seal, belonging to a sealing device of a fluid machine. The deceleration seal is characterized in that a fixed gear is fixed on a high-speed rotating main shaft to be sealed, the fixed gear drives a planetary gear to roll on a fixed gear ring on the wall of the machine, a fixed coaxial gear on the planetary gear drives a driven gear sleeve which is coaxial with the main shaft to rotate in the same direction, a planetary gear shaft drives a planetary gear sleeve which is concentric with the main shaft to rotate in the same direction and thereby a sealing ring or sealing surface among the surface of the main shaft, the surface of the driven gear sleeve, the surface of the planetary gear sleeve and the fixed wall surface of the machine is formed and a deceleration flexible seal or deceleration mechanical seal is formed. The utility model has the advantages of low relative movement speed among seal surfaces, better sealing performance and longer service life.
Description
Affiliated technical field
The utility model relates to the seal arrangement that machines such as a kind of pump, stirred tank, mixer, mulser are used, and it belongs to sealing device of fluid machinery; In the main shaft seal in particular for poisonous, harmful chemical industry liquid, gas, can reduce sealing position speed of related movement greatly, improve the working life of Sealing greatly. more can improve sealability effectively, be specially adapted to use in the fields such as food, chemical industry, water supply.
Background technique
At present, the sealing of known power equipment, no matter mechanical seal, packing type flexible sealing, its structure all is based on and will realizes a kind of blocking-up to liquid, gas in the slit between high-speed main spindle and static machine outer wall, but along with improving constantly of machine rotational speed, will realize security seal difficulty day by day effectively, and the sealing cost is expensive day by day; Because the rotating speed height of axle, the relative velocity of sealing surface is big, causes sealing life low; For this reason, how to improve effectively sealability and life-span, one of outlet is exactly under the condition of the rotating speed that does not change main shaft, how to reduce the speed of related movement of sealing contact surface effectively, therefore we claim that this mode is the reduction of speed sealing, and it comprises reduction of speed mechanical seal and reduction of speed packing type flexible sealing and other similar reduction of speed seal arrangements.Inquire about through the online rope of receiving, existing still do not have similar structure and notion about sealing patent.
Summary of the invention
The sealing difficulty that causes for the sealing contact surface relative velocity height that overcomes existing seal arrangement, particularly
Poisonous to some, harmful gas, the sealing of liquid, we manage the homodromal concentric ring of design low speed between high speed shaft and machine stationary face, then, between main shaft, concentric ring and stationary face, realize sealing successively, relative velocity between the sealing surfaces then at different levels will reduce more than 1/3rd step by step, thereby realize the reduction of speed sealing effectively.Like this, because the relative velocity of sealing surface is low, they are than more than the traditional sealing life high several times, and sealability also improves more than the several times.
The technological scheme that its technical problem that solves the utility model adopts is: fix in-line gears on the high-speed rotating shaft that will seal, driving three planetary pinions by it rolls on the fixed gear ring on the machine wall, coaxial fixed gear on the planetary pinion drives with the coaxial driven gear sleeve of main shaft again and does equidirectional rotation, simultaneously planet pin also drives one and does equidirectional rotation with the concentric sleeve of main shaft, thereby constituted spindle face, each driven gear sleeve section, the planetary pinion sleeve section, relatively rotating of reduction of speed step by step between the machine fixed wall, according to selecting different gear ratios, can realize the speed that relatively rotates between the surface of contact at different levels easily, such as all being 1/3rd of main shaft, design sealing between these relative movement faces then, can be deceleration mechanical seal, also can be the deceleration flexible sealing.
Core Feature of the present utility model is: by planetary induced effect, thereby realized from high-revolving main shaft to the driven gear sleeve, to the planetary pinion sleeve, to the relative movement of the equidirectional reduction of speed step by step the machine fixed wall. can between these equidirectional surface of revolution of reduction of speed step by step, realize conventional seals design effectively easily.
The beneficial effects of the utility model are, because the decelerating effect of planetary pinion and coaxial gear, make the speed that relatively rotates between the sealing surfaces at different levels low, thereby can seal with existing traditional approach easily, and can improve greatly sealability and life-span than main shaft.Significantly use for one and be, such as spindle speed is 10000 rev/mins, no matter using mechanical seal still is other sealing means, all difficulty realizes good seal action, if but three grades of reduction of speed modes that adopt this deceleration to seal, the speed that relatively rotates all is reduced to 1/3, has become 3330 rev/mins sealing, and then sealing will more easily realize.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structure diagram that deceleration sealing of the present utility model is used for three grades of flexible sealings.
Fig. 2 is the structure diagram that deceleration sealing of the present utility model is used for three-stage mechanical seal.
Among Fig. 1,1. fixed gear, 2. planetary pinion, 3. fixed gear ring, 4. driven gear sleeve, 5. planetary pinion sleeve, 6. cold true water entrance, 7. main shaft, 8. loam cake, 9. set screw, A. first order seal ring, B. second level seal ring, C. third level seal ring.
Among Fig. 2,1. fixed gear, 2. planetary pinion, 3. fixed gear ring, 4. driven gear sleeve, 5. planetary pinion sleeve, 6. cold true water entrance, 7. main shaft, 8. loam cake, 9. set screw, 10.O RunddichtringO, A. first order sealing surface, B. second level sealing surface, C. third level sealing surface.
Embodiment:
In Fig. 1, main shaft (7) and fixed gear (1) be high speed rotating together, fixed gear (1) just drives three planet wheels (2) and goes up rolling at fixed gear ring (3), just driving driven gear sleeve (4) with the coaxial gear of planetary pinion (2) does to slowly run with main shaft (7) is equidirectional, simultaneously the axle of planetary pinion (2) also drives planet wheel sleeve (5) and does same and main shaft (7) is equidirectional slowly runs. and what present between main shaft (7) and driven gear sleeve (4) adjacent surface like this is slide relative than low speed, and (A) seals with first order seal ring; Adjacent surface between driven gear sleeve (4) and planetary pinion sleeve (5) also presents lower slide relative, and (B) seals with second level seal ring; Planetary pinion sleeve (5) and fixed wall, promptly the slide relative than low speed also appears in fixed gear ring (3), and (C) seals with third level seal ring, thereby realized three grades of deceleration flexible ring sealings than low speed.If three seal rings are made of stuffing box packing, three grades of deceleration packing type flexible sealings have just been constituted.
In Fig. 2, main shaft (7) and fixed gear (1) be high speed rotating together, fixed gear (1) just drives three planetary pinions (2) and goes up rolling at fixed gear ring (3), just driving driven gear sleeve (4) with planetary pinion (2) in-line gears does to slowly run with main shaft (7) is equidirectional, simultaneously the axle of planetary pinion (2) also drives planetary pinion sleeve (5) and does same and main shaft (7) is equidirectional slowly runs. and what present between main shaft (7) and driven gear sleeve (4) adjacent surface like this is slide relative than low speed, and (A) seals with first order sealing surface; Adjacent surface between driven gear sleeve (4) and planetary pinion sleeve (5) also presents lower slide relative, and (B) seals with second level sealing surface; Planet wheel sleeve (5) and fixed wall, promptly the slide relative than low speed also appears in fixed gear ring (3), and (C) seals with third level sealing surface, thereby realized three grades of deceleration mechanical seals than low speed.
In a word, a kind of novel deceleration sealing of this patent, it is characterized in that: the deceleration sealing configuration is by main shaft (7), fixed gear (1), planetary pinion (2), fixed gear ring (3), in-line gears, driven gear sleeve (4), planetary pinion sleeve (5), seal ring or sealing surface (A), (B), (C) form, its structure characteristic is: fix a fixed gear (1) on the rotary main shaft that will seal (7), drive the fixed gear ring (3) of planetary pinion (2) on the machine wall by fixed gear (1) and go up rolling, fixing coaxial gear on the planetary pinion (2) drives with the coaxial driven gear sleeve (4) of main shaft again and does equidirectional rotation, planet pin drives one and does equidirectional rotation with the concentric planetary pinion sleeve (5) of main shaft, thus the formation spindle face, each driven gear sleeve section, the planetary pinion sleeve section, seal ring between the machine fixed wall or sealing surface (A), (B), (C) deceleration flexible sealing that is constituted or deceleration mechanical seal.
Claims (1)
1. novel deceleration sealing, it is characterized in that: the deceleration sealing configuration is by main shaft (7), fixed gear (1), planetary pinion (2), fixed gear ring (3), in-line gears, driven gear sleeve (4), planetary pinion sleeve (5), seal ring or sealing surface (A, B, C) form, on the rotary main shaft that will seal (7), fix a fixed gear (1), drive the fixed gear ring (3) of planetary pinion (2) on the machine wall by fixed gear (1) and go up rolling, fixing coaxial gear on the planetary pinion (2) drives with the coaxial driven gear sleeve (4) of main shaft again and does equidirectional rotation, planet pin drives one and does equidirectional rotation with the concentric planetary pinion sleeve (5) of main shaft, thus the formation spindle face, each driven gear sleeve section, the planetary pinion sleeve section, seal ring between the machine fixed wall or sealing surface (A, B, C) deceleration flexible sealing that is constituted or deceleration mechanical seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201280127U CN201747900U (en) | 2009-07-10 | 2009-07-10 | Deceleration seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201280127U CN201747900U (en) | 2009-07-10 | 2009-07-10 | Deceleration seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201747900U true CN201747900U (en) | 2011-02-16 |
Family
ID=43582579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201280127U Expired - Fee Related CN201747900U (en) | 2009-07-10 | 2009-07-10 | Deceleration seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201747900U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103383004A (en) * | 2012-05-02 | 2013-11-06 | 西华大学 | Self-driven middle rotating ring mechanical seal with speed variator |
| CN110118261A (en) * | 2019-05-31 | 2019-08-13 | 西安热工研究院有限公司 | One kind having planetary gear radial double mechanical seal structure |
| CN110307298A (en) * | 2019-06-19 | 2019-10-08 | 哈尔滨工业大学（威海） | A kind of mechanical dynamic seal device based on planetary gear mechanism |
-
2009
- 2009-07-10 CN CN2009201280127U patent/CN201747900U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103383004A (en) * | 2012-05-02 | 2013-11-06 | 西华大学 | Self-driven middle rotating ring mechanical seal with speed variator |
| CN110118261A (en) * | 2019-05-31 | 2019-08-13 | 西安热工研究院有限公司 | One kind having planetary gear radial double mechanical seal structure |
| CN110307298A (en) * | 2019-06-19 | 2019-10-08 | 哈尔滨工业大学（威海） | A kind of mechanical dynamic seal device based on planetary gear mechanism |
| CN110307298B (en) * | 2019-06-19 | 2022-06-07 | 哈尔滨工业大学（威海） | Mechanical dynamic sealing device based on planetary gear mechanism |
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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: 20110216 Termination date: 20140710 |
|
| EXPY | Termination of patent right or utility model |