CN103375592A - External driving type middle rotating ring mechanical seal with speed change gear - Google Patents
External driving type middle rotating ring mechanical seal with speed change gear Download PDFInfo
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- CN103375592A CN103375592A CN2012101216998A CN201210121699A CN103375592A CN 103375592 A CN103375592 A CN 103375592A CN 2012101216998 A CN2012101216998 A CN 2012101216998A CN 201210121699 A CN201210121699 A CN 201210121699A CN 103375592 A CN103375592 A CN 103375592A
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- China
- Prior art keywords
- rotating ring
- speed change
- change gear
- middle rotating
- mechanical seal
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Abstract
An external driving type middle rotating ring mechanical seal with a speed change gear is characterized in that a middle rotating ring with two end faces opposite to a movable ring and a static ring is arranged between the movable ring and the static ring with sealing end faces arranged oppositely. The middle rotating ring is driven by the speed change gear with an external power source to rotate. An input shaft of the speed change gear and an output shaft of the power source are connected through a coupler or a transmission wheel set, the output shaft is connected with a transmission shaft sleeve through the transmission wheel set, and the transmission shaft sleeve is in transmission connection with the middle rotating ring. Relative rotating speed of the sealing end faces of the mechanical seal is adjustable, the relative rotating speed of the sealing end faces does not depend on the rotating speed of a sealed unit directly, and the mechanical seal with high speed and low speed can achieve higher stability.
Description
Technical field
The invention belongs to the axial end sealing of rotating machinery, particularly a kind of external driving middle rotating ring mechanical seal with speed change gear can be used for the axial end sealing of the compressor, decompressor, seperator, pump, reactor etc. of various types.
Background technique
Mechanical seal is widely used in the axial end face seal of numerous rotating machineries, complexity because of its working condition, further investigation to mechanical seal will be long-term, an arduous process, particularly the stability of high speed and low speed unit axial end sealing is two difficulties of puzzlement researcher all the time.Be in particular in: contacting mechanical seal relative rotation speed between the fast state lower sealing surface is too high, causes the phenomenons such as sealing surface friction, wearing and tearing, heating, distortion serious, and sealability descends rapidly, even cisco unity malfunction; And non-contact mechanical seal fluid film between the low speed state lower end surface can not generate enough opening forces and rigidity, can't guarantee the normal separation of sealing surface and the stability in gap.For traditional mechanical seal, on the general circumferential running shaft that is fixed on sealed machine of rotating ring, cause under the given condition of sealed machine, being difficult to initiatively change the relative rotation speed between the dynamic and static ring sealing surface.
By between dynamic and static ring, increasing the mode of middle rotating ring, change the relative rotation speed between mechanical seal two sealing surfaces, be a kind of effective sealing surface relative rotation speed regulate and control method.But, be a difficulties for adjustment and the control of middle rotating ring rotating speed.
At this, a kind of external driving middle rotating ring mechanical seal with speed change gear is proposed, by power source, a speed change gear are set, and gained rotating speed after the speed change is outputed to the external driving middle rotating ring mechanical seal of middle rotating ring.Be characterized in: middle rotating ring arranges corresponding power source, and come the rotating speed of active accommodation middle rotating ring by a speed change gear, thereby make different rotating speeds unit seal face can both obtain a suitable relative rotational, break away from sealed generating unit speed to the impact of sealability, stability and the working life of elevating mechanism sealing.
Summary of the invention
The purpose of this invention is to provide a kind of external driving middle rotating ring mechanical seal with speed change gear.
The present invention is a kind of external driving middle rotating ring mechanical seal with speed change gear, totally mainly is made of mechanical seal part, speed change gear part and power source, is connected by driving component between the each several part.Specifically mainly by rotating ring 1, middle rotating ring 2, stationary ring 3, driving sleeve 4, support 5, speed change gear 6, coupling 7, power source 8, drive wheel Z
1, drive wheel Z
2, drive wheel Z
3, drive wheel Z
4, the formation such as input shaft III, output shaft II.Wherein mechanical sealing part divides and comprises: rotating ring 1, middle rotating ring 2, stationary ring 3; Speed change gear partly comprises: speed change gear 6, input shaft III, output shaft II; Driving component comprises: drive wheel Z
1, drive wheel Z
2, drive wheel Z
3, drive wheel Z
4, coupling 7.
Drive wheel Z
1Be fixed on the driving sleeve 4, with the rotation of driving sleeve 4 circumferential clocking of turbines, driving sleeve 4 empty sets are on the axle I, and the axle I is sealed unit running shaft.Drive wheel Z
2Be fixed on the output shaft II of speed change gear 6, the output shaft IV of power source 8 is by coupling 7 or drive wheel Z
3, drive wheel Z
4Connect with the input shaft III of speed change gear 6, and band moving axis III is followed power source 8 rotations.
Working procedure of the present invention is: power source 8 is by coupling 7 or drive wheel Z
3, drive wheel Z
4Drive the input shaft III rotation of speed change gear 6, the output shaft II of speed change gear 6 drives drive wheel Z
2Rotate synchronously drive wheel Z
2Drive drive wheel Z
1Revolution, drive wheel Z
1Rotation pass to middle rotating ring 2 by driving sleeve 4, and finally drive middle rotating ring 2 and driving sleeve 4 and drive wheel Z
1Synchronous revolving.Middle rotating ring 2 has just obtained a rotational speed that is different from sealed unit running shaft I by speed change gear 6 and power source 8 like this, because middle rotating ring 2 matches with rotating ring 1 and stationary ring 2 respectively again, finally reached to change by the purpose of the relative rotational between front cover.
The present invention mainly adopts following technical measures to realize: the external driving middle rotating ring mechanical seal of band speed change gear of the present invention, between the rotating ring that is oppositely arranged with seal face and stationary ring, be provided with the respectively middle rotating ring relative with rotating ring and stationary ring of both ends of the surface, and this middle rotating ring drives rotation by the speed change gear with external power source.The input shaft of this speed change gear is connected by coupling or driving wheel group with the output shaft of power source, and output shaft is connected with driving sleeve by driving wheel group, and driving sleeve is in transmission connection with central ring again.
Described external driving middle rotating ring mechanical seal with speed change gear, rotating ring 2 can be adjusted by the gear ratio of speed change gear as required with the rotating ratio of sealed unit running shaft I in the middle of it, and the preferable range of its ratio is 0.3 ~ 500.Use the unit situation according to present mechanical seal, its rotating speed of higher rotation speed unit is about 7000 ~ 15000rpm, medium its rotating speed of rotating speed unit is about 2500 ~ 4000rpm, be about 20 ~ 1000rpm than its rotating speed of slow-speed of revolution unit, and according to actual use condition, contact seal is as only arranging a central ring, consider the uniformity of two groups of sealing surface relative rotation speeds, the span of ratio should be chosen near 0.5, and the noncontact seal rotating speed can obtain higher fluid film rigidity and stability at 8000 ~ 10000rpm scope inner sealing surface, then the span of ratio is about 2 ~ 500, particularity and the transmission efficiency in the actual course of working with due regard to, the preferable range of determining rotating speed ratio is 0.3 ~ 500.
The external driving middle rotating ring mechanical seal of band speed change gear of the present invention, the output of described external power source should be approximate and rotatablely moves uniformly, specifically can be motor, steam turbine, internal-combustion engine, motor equal power device, but preferably adopt motor as external power source, drive middle rotating ring through speed change gear.
The external driving middle rotating ring mechanical seal of band speed change gear of the present invention, the feature of described drive wheel is to carry out the transmission of circumferential rotation motion, specifically can be gear, belt wheel, friction wheel, sprocket wheel etc., but preferably adopt gear and belt wheel as drive wheel, when two center transmission shafts are drive wheel apart from a hour preferred gear, when two center transmission shafts preferred belt wheel when larger is drive wheel.
With mode transmissions such as pin, key, expansion set, screws, but preferred mode is to be in transmission connection through the driving pin mode with its internal side diameter and driving sleeve for the external driving middle rotating ring mechanical seal of band speed change gear of the present invention, described middle rotating ring.
The present invention has following characteristics: 1. the seal face relative rotation speed is adjustable; 2. the rotating speed adjustable extent of middle rotating ring is wide; 3. make high, low speed mechanical seal have higher stability.
Description of drawings
Fig. 1 is preferred implementation 1 schematic representation of the external driving middle rotating ring mechanical seal of band speed change gear of the present invention.
Fig. 2 is preferred implementation 2 schematic representation of the external driving middle rotating ring mechanical seal of band speed change gear of the present invention.
Fig. 3 is preferred implementation 3 schematic representation of the external driving middle rotating ring mechanical seal of band speed change gear of the present invention.
Fig. 4 is preferred implementation 4 schematic representation of the external driving middle rotating ring mechanical seal of band speed change gear of the present invention.
Fig. 5 is the structural representation of a kind of mechanical seal device corresponding with Fig. 1-Fig. 4.
Related symbol is among the figure: 1-rotating ring; 2-middle rotating ring; 3-stationary ring; 4-driving sleeve; 5-support; 6-speed change gear; Z
1-drive wheel represents the diameter that this is taken turns simultaneously; Z
2-drive wheel represents the diameter that this is taken turns simultaneously; Z
3-drive wheel represents the diameter that this is taken turns simultaneously; Z
4-drive wheel represents the diameter that this is taken turns simultaneously; I-sealed unit running shaft; The output shaft of II-speed change gear; The input shaft of III-speed change gear; The output shaft of IV-power source.
Embodiment
For further understanding content of the present invention, characteristics and function, hereby with specific embodiment, be described with reference to the accompanying drawings as follows.
Embodiment 1: consult Fig. 1, Fig. 5.
Totally mainly being made of mechanical seal part, speed change gear part and power source of present embodiment connected by driving component between the each several part.Specifically mainly by rotating ring 1, middle rotating ring 2, stationary ring 3, driving sleeve 4, support 5, speed change gear 6, coupling 7, power source 8, gear Z
1, gear Z
2, the formation such as input shaft III, output shaft II.Wherein mechanical sealing part divides and comprises: rotating ring 1, middle rotating ring 2, stationary ring 3; Speed change gear partly comprises: speed change gear 6, input shaft III, output shaft II; Driving component comprises: gear Z
1, gear Z
2, coupling 7.
Gear Z
1Be fixed on the driving sleeve 4, with the rotation of driving sleeve 4 circumferential clocking of turbines, driving sleeve 4 empty sets are on the axle I, and the axle I is sealed unit running shaft.Gear Z
2Be fixed on the output shaft II of speed change gear 6, the output shaft IV of power source 8 is in transmission connection by the input shaft III of coupling 7 with speed change gear 6, and band moving axis III is followed power source 8 synchronous rotaries, gear Z
1With gear Z
2The outer gearing transmission.
The working procedure of present embodiment is: the output shaft IV of power source 8 is rotated the output shaft II driven gear Z of speed change gear 6 by the input shaft III that coupling 7 drives speed change gear 6
2Rotate synchronously gear Z
2Driven gear Z
1Revolution, gear Z
1Rotation pass to middle rotating ring 2 by driving sleeve 4, and finally drive middle rotating ring 2 and driving sleeve 4 and gear Z
1Synchronous revolving.
The rotating speed of supposing sealed unit running shaft I is n
1, the rotating speed of middle rotating ring 2 is n
2, the output speed of power source 8 is n
8, the velocity ratio of speed change gear 6 is i
6, i
6Be the output shaft II of speed change gear 6 and the ratio of the rotating speed of input shaft III, then the rotating ratio i of rotating ring 2 and axle I is: i=n
2/ n
1=i
6(Z
2n
8)/(Z
1n
1).Can be by changing the velocity ratio i of speed change gear 6
6, power source 8 output speed be n
8With the diameter of each driving gear, realize middle rotating ring 2 rotation speed n
2Adjustment.The rotating speed of rotating ring 1 is all n mutually with the rotating speed of running shaft I
1, then the relative rotation speed of rotating ring 1 and sealing surface that middle rotating ring 2 consists of is n
2± n
1, middle rotating ring 2 is n with the relative rotation speed of the formation sealing surface of stationary ring 3
2
Embodiment 2: consult Fig. 2, Fig. 5.
Totally still mainly being made of mechanical seal part, speed change gear part and power source of present embodiment connected by driving component between the each several part.Specifically mainly by rotating ring 1, middle rotating ring 2, stationary ring 3, driving sleeve 4, support 5, speed change gear 6, coupling 7, power source 8, belt wheel Z
1, belt wheel Z
2, the formation such as input shaft III, output shaft II.Wherein mechanical sealing part divides and comprises: rotating ring 1, middle rotating ring 2, stationary ring 3; Speed change gear partly comprises: speed change gear 6, input shaft III, output shaft II; Driving component comprises: belt wheel Z
1, belt wheel Z
2, coupling 7.
Embodiment 2 is with embodiment 1 difference: Z among the embodiment 2
1, Z
2Two drive wheels are belt wheel, and Z among the embodiment 1
1, Z
2Two drive wheels are gear.Embodiment 2 working procedure and rotating ratio, sealing surface relative rotation speed computational methods are identical with embodiment 1.
Embodiment 3: consult Fig. 3, Fig. 5.
Totally still mainly being made of mechanical seal part, speed change gear part and power source of present embodiment connected by driving component between the each several part.Specifically mainly by rotating ring 1, middle rotating ring 2, stationary ring 3, driving sleeve 4, support 5, speed change gear 6, coupling 7, power source 8, gear Z
1, gear Z
2, belt wheel Z
3, belt wheel Z
4, the formation such as input shaft III, output shaft II.Wherein mechanical sealing part divides and comprises: rotating ring 1, middle rotating ring 2, stationary ring 3; Speed change gear partly comprises: speed change gear 6, input shaft III, output shaft II; Driving component comprises: gear Z
1, gear Z
2, belt wheel Z
3, belt wheel Z
4
The rotating speed of sealed unit running shaft I is n
1, the rotating speed of middle rotating ring 2 is n
2, the output speed of power source 8 is n
8, the velocity ratio of speed change gear 6 is i
6, i
6Be the output shaft II of speed change gear 6 and the ratio of the rotating speed of input shaft III, then the rotating ratio i of rotating ring 2 and axle I is: i=n
2/ n
1=i
6(Z
2Z
4n
8)/(Z
1Z
3n
1).The rotating speed of rotating ring 1 is all n mutually with the rotating speed of running shaft I
1, then the relative rotation speed of rotating ring 1 and sealing surface that middle rotating ring 2 consists of is n
2± n
1, middle rotating ring 2 is n with the relative rotation speed of the formation sealing surface of stationary ring 3
2
Embodiment 4: consult Fig. 4, Fig. 5.
Totally still mainly being made of mechanical seal part, speed change gear part and power source of present embodiment connected by driving component between the each several part.Specifically mainly by rotating ring 1, middle rotating ring 2, stationary ring 3, driving sleeve 4, support 5, speed change gear 6, power source 8, belt wheel Z
1, belt wheel Z
2, belt wheel Z
3, belt wheel Z
4, the formation such as input shaft III, output shaft II.Wherein mechanical sealing part divides and comprises: rotating ring 1, middle rotating ring 2, stationary ring 3; Speed change gear partly comprises: speed change gear 6, input shaft III, output shaft II; Driving component comprises: belt wheel Z
1, belt wheel Z
2, belt wheel Z
3, belt wheel Z
4
Among the above embodiment, focus on embodying between the input shaft III of the output shaft IV of power source 8 and speed change gear 6, the output shaft II of speed change gear 6 and the mode that is in transmission connection between the driving sleeve 4, used respectively coupling, gear transmission and three kinds of modes of band transmission, and in actual applications chain transmission, friction wheel transmission etc. also can reach identical effect.For clearer description key problem, above embodiment only relates to the single-stage sealing configuration, and in actual use, the sealing total arrangement can have multiple pattern as required such as labyrinth (more than the two-stage) in the middle of: mechanical single seal, double seals, tandem seal (more than the two-stage), the series connection band, also can follow other seal style composition combined labyrinth and carbon gland such as floating-ring seal, carbon ring seal, labyrinth seal.
Claims (6)
1. external driving middle rotating ring mechanical seal with speed change gear, between the rotating ring that is oppositely arranged with seal face (1) and stationary ring (3), be provided with the respectively middle rotating ring (2) relative with stationary ring (3) with rotating ring (1) of both ends of the surface, it is characterized in that middle rotating ring (2) drives rotation by the speed change gear with external power source (8) (6), the input shaft (III) of speed change gear (6) and the output shaft (IV) of power source (8) are by coupling (7) or drive wheel (Z
3), drive wheel (Z
4) connect, output shaft (II) is by drive wheel (Z
2), drive wheel (Z
1) be connected with driving sleeve (4), driving sleeve (4) is in transmission connection with middle rotating ring (2).
2. a kind of external driving middle rotating ring mechanical seal with speed change gear as claimed in claim 1 is characterized in that described middle rotating ring (2) and the span of the rotating ratio of sealed unit running shaft (I) are 0.3 ~ 500.
3. a kind of external driving middle rotating ring mechanical seal with speed change gear as claimed in claim 1 is characterized in that described external power source (8) is motor.
4. a kind of external driving middle rotating ring mechanical seal with speed change gear as claimed in claim 1 is characterized in that described drive wheel (Z
1), drive wheel (Z
2), drive wheel (Z
3), drive wheel (Z
4) be gear or belt wheel.
5. a kind of external driving middle rotating ring mechanical seal with speed change gear as claimed in claim 1 is characterized in that described speed change gear (6) can be speedup transmission or gearing down.
6. a kind of external driving middle rotating ring mechanical seal with speed change gear as claimed in claim 1 is characterized in that described middle rotating ring (2) is in transmission connection through the driving pin mode with its internal side diameter and driving sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101216998A CN103375592A (en) | 2012-04-24 | 2012-04-24 | External driving type middle rotating ring mechanical seal with speed change gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101216998A CN103375592A (en) | 2012-04-24 | 2012-04-24 | External driving type middle rotating ring mechanical seal with speed change gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103375592A true CN103375592A (en) | 2013-10-30 |
Family
ID=49461178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101216998A Pending CN103375592A (en) | 2012-04-24 | 2012-04-24 | External driving type middle rotating ring mechanical seal with speed change gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103375592A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027244A (en) * | 2018-09-20 | 2018-12-18 | 温州市天成密封件制造有限公司 | A kind of mechanically-sealing apparatus |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0878625A2 (en) * | 1998-08-04 | 1998-11-18 | Maag Pump Systems Textron AG | Method and device for sealing a shaft and use of the method and the device in a gear pump |
| CN101806362A (en) * | 2010-04-12 | 2010-08-18 | 西华大学 | Mechanical sealing device of middle rotating ring |
| DE102010004801A1 (en) * | 2010-01-16 | 2011-07-21 | Neugart GmbH, 77971 | Sealing ring for sealing e.g. shafts, against housing portion in gear box, has inner ring comprising seal lip, and magnet magnetically secured at supporting ring that is made of sealing material such as ferromagnetic material |
| CN202080114U (en) * | 2010-05-20 | 2011-12-21 | 日产自动车株式会社 | Variable speed transmission unit |
| CN202171002U (en) * | 2011-02-25 | 2012-03-21 | 西华大学 | Conical surface mechanical sealing device |
| CN202188125U (en) * | 2011-02-25 | 2012-04-11 | 西华大学 | Spherical mechanical sealing device |
| CN202674319U (en) * | 2012-04-24 | 2013-01-16 | 西华大学 | External drive type middle rotating ring mechanical seal with speed change device |
-
2012
- 2012-04-24 CN CN2012101216998A patent/CN103375592A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0878625A2 (en) * | 1998-08-04 | 1998-11-18 | Maag Pump Systems Textron AG | Method and device for sealing a shaft and use of the method and the device in a gear pump |
| DE102010004801A1 (en) * | 2010-01-16 | 2011-07-21 | Neugart GmbH, 77971 | Sealing ring for sealing e.g. shafts, against housing portion in gear box, has inner ring comprising seal lip, and magnet magnetically secured at supporting ring that is made of sealing material such as ferromagnetic material |
| CN101806362A (en) * | 2010-04-12 | 2010-08-18 | 西华大学 | Mechanical sealing device of middle rotating ring |
| CN202080114U (en) * | 2010-05-20 | 2011-12-21 | 日产自动车株式会社 | Variable speed transmission unit |
| CN202171002U (en) * | 2011-02-25 | 2012-03-21 | 西华大学 | Conical surface mechanical sealing device |
| CN202188125U (en) * | 2011-02-25 | 2012-04-11 | 西华大学 | Spherical mechanical sealing device |
| CN202674319U (en) * | 2012-04-24 | 2013-01-16 | 西华大学 | External drive type middle rotating ring mechanical seal with speed change device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027244A (en) * | 2018-09-20 | 2018-12-18 | 温州市天成密封件制造有限公司 | A kind of mechanically-sealing apparatus |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131030 |