CN101709817A - Novel spring compression type end-face-seal rotary joint - Google Patents
Novel spring compression type end-face-seal rotary joint Download PDFInfo
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- CN101709817A CN101709817A CN200910253994A CN200910253994A CN101709817A CN 101709817 A CN101709817 A CN 101709817A CN 200910253994 A CN200910253994 A CN 200910253994A CN 200910253994 A CN200910253994 A CN 200910253994A CN 101709817 A CN101709817 A CN 101709817A
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- oil distribution
- distribution disc
- distribution casing
- rotating shaft
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Abstract
The invention relates to a novel spring compression type end-face-seal rotary joint. A rotating shaft is installed in a shell through a bearing in a free rotation way, the end face of the rotating shaft in the shell is provided with an oil distribution disc, the end face of the shell is provided with a clamping cap, the clamping cap and the oil distribution disc form a butt joint through an O-shaped seal ring, a compression spring sleeved on the clamping cap presses against the oil distribution disc, and the end face of the oil distribution disc and the end face of the rotating shaft form a frictional contact; the clamping cap, the oil distribution disc and the rotating shaft are provided with through straight holes in the axial direction; and the straight hole in the clamping cap, the straight hole in the oil distribution disc, a circular oil groove in the oil distribution disc and the straight hole in the rotating shaft are sequentially butted to form an oil passage. The contact face of the end face (movable ring) of the rotating shaft and the end face (fixed ring) of the oil distribution disc conveys the delivered fluid in a seal way under the action of the compaction force; the abutted surface of the oil distribution disc and the rotating shaft is a rotary seal face; and the fluid medium under pressure is conveyed to the medium passage of the rotating shaft by the clamping cap through the oil distribution disc, thereby completing the continuous no-leakage conveying of the fluid.
Description
Technical field
The present invention relates to a kind of new type rotation joint, be specifically related to a kind of device that pressurized fluid media in the pressure tube is connected to the rotating machinery pressure system, the fluid with certain pressure that is used for flowing in the static pipeline does not have to be transported to continuously with leaking realizes power transmission in the rotary component, belong to the rotating machinery technical field.
Background technique
Swivel coupling is widely used in carrying to various rotating machineries the occasion of liquid medium, the fluid with certain pressure that flows in the static pipeline is not had continuously with leaking be transported in the rotary component, realizes power transmission.
The swivel coupling of using is the swivel coupling with axial seal structure at present, exist complex structure, accuracy of manufacturing require high, working life is short, leakage rate is big, problem such as easily stuck between running shaft and the frame, cause that maintenance workload is big, the relative permitivity amount big, the adverse consequences of befouling environment, can influence the manufacturing efficiency of manufacturing mechanism when serious.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, a kind of long lifetime of high rotating speed occasion, low new type rotation joint that leaks, can not be stuck of being applicable to is provided.
Purpose of the present invention is achieved through the following technical solutions:
Novel spring compression type end-face-seal rotary joint, comprise running shaft, oil distribution casing, friction top, holddown spring, housing and bearing, running shaft is installed in the housing by the bearing rotation freely, the junction of running shaft and housing is provided with seal arrangement, be characterized in: the end face of running shaft is provided with oil distribution casing in housing, on the end face of housing, friction top is installed, friction top docks by O-ring seals with oil distribution casing, the holddown spring that is nested with on the friction top is pressed to oil distribution casing, and the end face of oil distribution casing contacts with the end-face friction of running shaft; Be provided with the straight hole that connects on friction top, oil distribution casing and running shaft vertically, the straight hole on the friction top, the straight hole on the oil distribution casing, the annular oil groove on the oil distribution casing and the straight hole on the running shaft dock the formation oil duct successively.
Further, above-mentioned novel spring compression type end-face-seal rotary joint, the fitting surface of described oil distribution casing periphery and inner walls is provided with the O RunddichtringO.
Again further, above-mentioned novel spring compression type end-face-seal rotary joint, the fitting surface of described friction top and housing is provided with the O RunddichtringO.
Substantive distinguishing features and obvious improvement that technical solution of the present invention is outstanding are mainly reflected in:
According to the mechanical end face seal principle design, running shaft end face (rotating ring) is friction sealed with the surface of contact of oil distribution casing end face (stationary ring), and friction top is pressed against oil distribution casing on the end face of running shaft by holddown spring with certain impacting force; Running shaft end face (rotating ring) seals conveying to the fluid that is transmitted with the surface of contact of oil distribution casing end face (stationary ring) under the effect of certain impacting force, running shaft rotates with rotating machinery under bearings, other part stationary is motionless, holddown spring is pressed to the running shaft end face by friction top with oil distribution casing, the faying surface of oil distribution casing and running shaft is a rotary seal face, in oil distribution casing was transported to the medium channel of running shaft, leaked and carry by the continuous nothing of finishing fluid by friction top for flowing medium with certain pressure.Substitute traditional axial seal structure, overcome defectives such as existing swivel coupling leakage rate is big, easy stuck, this new type rotation joint is simple in structure, and is easily manufactured, is applicable to high rotating speed occasion, has remarkable advantages such as long lifetime, low leakage.
Description of drawings
Below in conjunction with accompanying drawing technical solution of the present invention is described further:
Fig. 1: the structural representation of novel spring compression type end-face-seal rotary joint.
The implication of each reference character sees the following form among the figure:
| Reference character | Implication | Reference character | Implication | Reference character | Implication |
| ??1 | Running shaft | ??2 | Gland | ??3 | Lip-type packing |
| Reference character | Implication | Reference character | Implication | Reference character | Implication |
| ??4 | Saturating lid | ??5 | Sealing plate | ??6 | Bearing |
| ??7 | Bearing | ??8 | Oil distribution casing | ??9 | Housing |
| ??10 | Friction top | ??11 | Holddown spring | ??12 | O-ring seals |
| ??13 | O-ring seals | ??14 | O-ring seals | ??15 | O-ring seals |
| ??16 | O-ring seals | ??17 | The anti-rotation baffle plate |
Embodiment
As shown in Figure 1, novel spring compression type end-face-seal rotary joint, comprise running shaft 1, housing 9 and bearing 6, bearing 7, running shaft 1 is installed in the housing 9 freely by bearing 6 and bearing 7 rotations, running shaft 1 is provided with seal arrangement with the junction of housing 9, the left side of running shaft is provided with oil distribution casing 8 in housing, friction top 10 is installed on the end face of housing, friction top 10 docks with oil distribution casing 8, the holddown spring 11 that is nested with on the friction top 10 is pressed to oil distribution casing 8, and the end face of oil distribution casing 8 contacts with the end-face friction of running shaft 1; Be provided with the straight hole that connects on friction top, oil distribution casing and running shaft vertically, the straight hole on the friction top, the straight hole on the oil distribution casing, the annular oil groove on the oil distribution casing and the straight hole on the running shaft dock the formation oil duct successively.Wherein, the fitting surface of oil distribution casing periphery and inner walls is provided with O RunddichtringO 16, and the fitting surface of friction top and oil distribution casing is provided with O RunddichtringO 13, O RunddichtringO 14 and O RunddichtringO 15, and the fitting surface of friction top and housing is provided with O RunddichtringO 12.The liquid pressure-bearing surface area of oil distribution casing both sides equates, has eliminated the influence of fluid pressure to oil distribution casing.
The right-hand member junction of running shaft and housing is provided with seal arrangement, saturating lid 4 connects with right-hand member bearing 6, covers 4 thoroughly by being bolted on the housing 9, cover thoroughly 4 and housing 9 between sealing plate 5 is arranged, be provided with lip-type packing 3 between saturating lid 4 and the running shaft 1, gland 2 is connected in and covers on 4.Have drain tap C and drain tap D on housing 9, drain tap C communicates with the oil leab of holddown spring 11, and drain tap D communicates with the oil leab of bearing.Have hydraulic fluid port C and hydraulic fluid port D on the friction top 10.
This structure is according to the mechanical end face seal principle design, running shaft links to each other with running shaft on the rotating machinery, drive and rotate by rotating machinery, housing is the general assembly basis of swivel coupling, housing by two bearings on running shaft, running shaft end face (rotating ring) is friction sealed with the surface of contact of oil distribution casing end face (stationary ring), and friction top is pressed against oil distribution casing on the end face of running shaft with certain impacting force by holddown spring.Running shaft end face (rotating ring) seals conveying to the fluid that is transmitted with the surface of contact of oil distribution casing end face (stationary ring) under the effect of certain impacting force, running shaft rotates with rotating machinery under bearings, other part stationary is motionless, holddown spring is pressed to the running shaft end face by friction top with oil distribution casing, the faying surface of oil distribution casing and running shaft is a rotary seal face, in oil distribution casing was transported to the medium channel of running shaft, leaked and carry by the continuous nothing of finishing fluid by friction top for flowing medium with certain pressure.
Running shaft end face (rotating ring) not only plays seal action but also have long wear-resisting working life with the frictional contact surface of oil distribution casing end face (stationary ring), the holddown spring of certain pretightening force is pressed to the running shaft end face by friction top with oil distribution casing, make the running shaft end face (rotating ring) and the surface of contact of oil distribution casing end face (stationary ring) in rotary course, be in semi-liquid lubrication or boundary lubrication condition all the time, greatly reduced the friction and wear between the surface of contact, both play seal action, prolonged the working life of swivel coupling again.
Running shaft end face (rotating ring) and oil distribution casing end face (stationary ring) have adopted the material of two kinds of different hardness to carry out the friction pair combination respectively, have improved wear resistance, have prolonged the working life of swivel coupling.
Be furnished with dish and adopt eccentric structure, anti-rotation baffle plate 17 is installed on the friction top, can prevent to be furnished with dish and rotate, protected the seal ring of being furnished with on the dish effectively with friction top.
Designed the fluid pressure counterbalance annular groove that is communicated with both sides in the both sides of being furnished with dish, eliminate the influence of fluid pressure to the oil distribution casing impacting force, greatly reduce the impacting force and the specification of holddown spring, make the frictional force of oil distribution casing O-ring seals between the impacting force that axially only is subjected to holddown spring and oil distribution casing and housing, and reduced the physical dimension of swivel coupling.
In sum, the present invention has utilized the mechanical end face seal art designs novel end face seal structure, substitute traditional axial seal structure, defectives such as existing swivel coupling leakage rate is big, easy stuck have been overcome, this new type rotation joint is simple in structure, easily manufactured, be applicable to high rotating speed occasion, have remarkable advantages such as long lifetime, low leakage.
What need understand is: the above only is a preferred implementation of the present invention; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. novel spring compression type end-face-seal rotary joint, comprise running shaft, oil distribution casing, friction top, holddown spring, housing and bearing, running shaft is installed in the housing by the bearing rotation freely, the junction of running shaft and housing is provided with seal arrangement, it is characterized in that: the end face of running shaft is provided with oil distribution casing in housing, on the end face of housing, friction top is installed, friction top docks by O-ring seals with oil distribution casing, the holddown spring that is nested with on the friction top is pressed to oil distribution casing, and the end face of oil distribution casing contacts with the end-face friction of running shaft; Be provided with the straight hole that connects on friction top, oil distribution casing and running shaft vertically, the straight hole on the friction top, the straight hole on the oil distribution casing, the annular oil groove on the oil distribution casing and the straight hole on the running shaft dock the formation oil duct successively.
2. novel spring compression type end-face-seal rotary joint according to claim 1 is characterized in that: the fitting surface of described oil distribution casing periphery and inner walls is provided with the O RunddichtringO.
3. novel spring compression type end-face-seal rotary joint according to claim 1 is characterized in that: the fitting surface of described friction top and housing is provided with the O RunddichtringO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910253994A CN101709817A (en) | 2009-12-11 | 2009-12-11 | Novel spring compression type end-face-seal rotary joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910253994A CN101709817A (en) | 2009-12-11 | 2009-12-11 | Novel spring compression type end-face-seal rotary joint |
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| Publication Number | Publication Date |
|---|---|
| CN101709817A true CN101709817A (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910253994A Pending CN101709817A (en) | 2009-12-11 | 2009-12-11 | Novel spring compression type end-face-seal rotary joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101709817A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865343A (en) * | 2010-06-07 | 2010-10-20 | 苏州有色金属研究院有限公司 | Novel pneumatic compacted end-face-seal rotary joint |
| CN105588702A (en) * | 2016-03-04 | 2016-05-18 | 中国空气动力研究与发展中心低速空气动力研究所 | Power system of flight test with power of low-speed wind tunnel model |
| CN108317318A (en) * | 2018-01-19 | 2018-07-24 | 兰州理工大学 | A kind of through type chicksan |
-
2009
- 2009-12-11 CN CN200910253994A patent/CN101709817A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865343A (en) * | 2010-06-07 | 2010-10-20 | 苏州有色金属研究院有限公司 | Novel pneumatic compacted end-face-seal rotary joint |
| CN105588702A (en) * | 2016-03-04 | 2016-05-18 | 中国空气动力研究与发展中心低速空气动力研究所 | Power system of flight test with power of low-speed wind tunnel model |
| CN105588702B (en) * | 2016-03-04 | 2017-09-29 | 中国空气动力研究与发展中心低速空气动力研究所 | A kind of low-speed wind tunnel model drive flight experiment dynamical system |
| CN108317318A (en) * | 2018-01-19 | 2018-07-24 | 兰州理工大学 | A kind of through type chicksan |
| CN108317318B (en) * | 2018-01-19 | 2019-10-22 | 兰州理工大学 | A kind of through type chicksan |
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Open date: 20100519 |