CN2578647Y - Rotary joints - Google Patents
Rotary joints Download PDFInfo
- Publication number
- CN2578647Y CN2578647Y CN 02264368 CN02264368U CN2578647Y CN 2578647 Y CN2578647 Y CN 2578647Y CN 02264368 CN02264368 CN 02264368 CN 02264368 U CN02264368 U CN 02264368U CN 2578647 Y CN2578647 Y CN 2578647Y
- Authority
- CN
- China
- Prior art keywords
- outer tube
- housing
- seal ring
- flange
- pin bushing
- 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 - Lifetime
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Abstract
The utility model discloses a rotary joint which is composed of a shell, and an end cover, a bottom cover, a spacer flange, etc. which are respectively positioned on both sides of the shell. The rotary joint is characterized in that a piston mechanism and a spherical surface sealing ring are additionally arranged between the shell and the bottom cover; an inner cavity of the shell is respectively communicated with the piston mechanism, the bottom cover and an inner hole of the spacer flange. The rotary joint can adapt to the heat expansion and the contraction of a drying cylinder. When in work, no matter whether the eccentricity exists between a shaft neck of the drying cylinder and the rotary joint or not, a spherical surface matching structure between the sealing ring and the bottom cover can be automatically aligned. Thus, the utility model has the advantages of good sealing effect, long service life, simple structure and convenient installation and maintenance.
Description
Technical field:
The utility model relates to a kind of heat conduction pipeline revolving joint that is used for industry drying cylinders such as papermaking, weaving, chemical fibre.
Background technique:
Drying cylinder with hot-swap feature is widely used in industries such as papermaking, weaving, chemical fibre.A plurality of drying cylinders just are close to the coating of drying cylinder outer wall by the order contact, realize the heat exchange between drying cylinder and the coating.In most of the cases, heat exchange medium (as steam) imports drying cylinder by swivel joint, and in the condensation of drying cylinder inwall, and condensed fluid is discharged by same joint or another joint, and drying cylinder generally will move in very wide temperature range.When just starting, center housing temperature is lower.Compressed steam is imported into drying cylinder by swivel joint, therefore requires swivel joint can both provide effective sealing under the temperature variation condition.Because expanding with heat and contract with cold of drying cylinder, drying cylinder and coupled back shaft and axle journal are because of variation of temperature, its axial dimension has obvious change, and swivel joint is assemblied in an end of drying cylinder axle journal, it utilizes axial pressure to seal usually, the axial dimension of axle journal changes, and the sealability of meeting butt joint has a negative impact.Traditional swivel joint major defect is that sealability is relatively poor, and trouble is installed, and working life is short.
Summary of the invention:
Goal of the invention of the present utility model is the shortcoming that overcomes prior art, provide a kind of and can regulate drying cylinder and connected back shaft and axle journal automatically, because the larger axis that thermal expansion or contraction produce is to distortion, make it in wider temperature range, to carry out effectively sealing, and long service life, swivel joint easy for installation.
The utility model comprises housing 15, lay respectively at housing 15 end covers at two sides 17, bottom 2 and the counter flange 1 that is connected with bottom 2 through bolt 3, be provided with piston mechanism and seal ring 5 between housing 15 and the bottom 2, said piston mechanism is by outer tube 6, be sleeved on outer tube 6 one ends, and can be along outer tube 6 outer tube guide pin bushing 7 in axial sliding, the outer tube guide pin bushing fastening flange 8 that is connected with housing 15 right sides, with housing 15 spring guide 9 that is connected of the tapped hole on the extended flange limit radially, one end is fixed on the outer tube guide pin bushing fastening flange 8, the other end is positioned at the shaft shoulder screw 10 of spring guide 9, form with the spring 11 that is sleeved on spring guide 9 outer walls, be provided with O type circle 12 between outer tube 6 outer walls and overcoat guide pin bushing 7 inwalls, have in the bottom 2 one with the concentric concave spherical surface of counter flange 1 center hole, this concave spherical surface matches with the sphere outer wall of seal ring 5, the inner chamber of housing 15 successively with outer tube 6, seal ring 5, the endoporus of bottom 2 and counter flange 1 is connected.
Can set up seal wears indicator 21 on the extended flange face of outer tube 6.Seal ring 5 is the sphere graphite-seal ring.
Owing to be provided with the piston mechanism and the spherical seal ring of heat sealing regulating and compensating role between housing of the present utility model and bottom, can allow drying cylinder axle journal opposing tabs housing that tangible axial displacement is arranged during work, so can in wider temperature range, carry out effectively sealing.Be created in the seal ring place because of the relative rotary motion between the utility model swivel joint and the axle journal again, because spherical seal ring can all directions freely rotate in concave surface, therefore no matter whether have off-centre between axle journal and the joint, the sphere cooperating structure between seal ring and the bottom can both align automatically.And structure of the present utility model is simple relatively, be convenient to install, safeguard, even the layman also can install smoothly.
Description of drawings:
Accompanying drawing 1 is the utility model example structure schematic representation, the position relation in the time of can representing relative extension the between outer tube and housing among the figure.
Accompanying drawing 3 is the utility model embodiment outline drawing.
Among the figure: 1-counter flange, 2-bottom, 3-bolt, 4-pad, 5-seal ring, 6-outer tube, 7-outer tube guide pin bushing, 8-outer tube guide pin bushing fastening flange, 9-spring guide, 10-shaft shoulder screw, 11-spring, 12-O type circle, 13-nut, 14-bolt, 15-housing, 16-bolt, 17-end cap, 18-outer tube arc inner wall, the ring-like support of 19-, 20-drying cylinder axle journal, 21-seal wears indicator.
Embodiment:
Referring to accompanying drawing 1,2.The bottom 2 of present embodiment closely links to each other by bolt 3 with flange 1, and pad 4 plays the radial seal effect.The one part concave spherical surface concentric with flange center arranged on the bottom 2, match with the protruding sphere of seal ring 5.The counter flange 1 coaxial end that is assemblied in drying cylinder axle journal 20 when the utility model uses.
Ring-like seal ring 5 is between bottom 2 and outer tube 6, and seal ring 5 can be made by abrasive sealing materials (as graphite), and the cylindrical bore of seal ring 5 communicates with the endoporus of bottom 2 and counter flange 1 and be concentric.One side surface of spherical seal ring 5 is that the concave spherical surface of protruding sphere of part and bottom 2 is complementary structure.And another surface of seal ring 5 is flat, closely cooperates with the end face of outer tube 6, relies on the spring pressure of piston mechanism to form sealing.
The inner chamber of housing 15 and piston mechanism, the inner chamber of seal ring, bottom and counter flange communicates, heat exchange mediums such as steam are generally entered by the M mouth of housing 15, and flow through this inner chamber and drying cylinder axle journal inwall enter drying cylinder, and the other end of housing 15 passes through fixedly end cap 17 of bolt 16.The cavity of end cap 17 communicates with the inner chamber of siphon device (not shown), and condensed fluid is discharged by the P mouth of end cap through siphon device.
In actual use, housing 15, end cap 17, outer tube guide pin bushing 7 and fastening flange 8 thereof are fixed on the drying cylinder bearing cap (not shown) by the ring support 19 that links to each other with outer tube guide pin bushing fastening flange.The spring 11 of piston mechanism is when mounted for being subjected to impaction state, its role is to guarantee that outer tube 6 is close to seal ring 5 always.As shown in Figure 1, under worst cold case, spring 11 is pushed down outer tube 6 to the right, makes it and seal ring 5 close proximity, and guarantees the sealing effect of protruding sphere of seal ring and bottom concave surface; And in most of the cases, there is internal pressure in housing 15 inner chambers, and act on outside the inwall 18 of outer tube 6, and outer tube 6 is pressed on the seal ring 5, and spring 11 can not produce extra pressure to outer tube and seal ring.At this moment, outer tube 6 is bigger with the spacing X of outer tube guide pin bushing 7; When the drying cylinder heating, the meeting axial expansion, drying cylinder axle journal 20 is moved to the left (as shown in Figure 2), axially promote counter flange 1, bottom 2, seal ring 5 and outer tube 6, outer tube 6 slides left along outer tube guide pin bushing 7, pressure spring 11, thereby will move axially absorption, the X value diminishes.Housing 15 and end cap 17, outer tube guide pin bushing 7 and fastening flange 8 thereof still are maintained fixed motionless.
As shown in Figure 3, seal wears indicator 21 is L-shaped, is installed on bolt on the extended flange face of outer tube, in order to observe the abrasion condition of seal ring, so that in time change seal ring.
Claims (3)
1. swivel joint, comprise housing (15), lay respectively at housing (15), end covers at two sides (17), bottom (2) and the counter flange (1) that is connected with bottom (2) through bolt (3), it is characterized by and be provided with piston mechanism and seal ring (5) between housing (15) and the bottom (2), said piston mechanism is sleeved on outer tube (6) one ends by outer tube (6), and can be along outer tube (6) outer tube guide pin bushing (7) in axial sliding, the outer tube guide pin bushing fastening flange (8) that is connected with housing (15) right side, with housing (15) spring guide (9) that is connected of the tapped hole on the extended flange limit radially, one end is fixed on the outer tube guide pin bushing fastening flange (8), the other end is positioned at the shaft shoulder screw (10) of spring guide (9), form with the spring (11) that is sleeved on spring guide (9) outer wall, be provided with O type circle (12) between outer tube (6) outer wall and outer tube guide pin bushing (7) inwall, have on the bottom (2) one with the concentric concave spherical surface of counter flange (1) center hole, this concave spherical surface matches with the sphere outer wall of seal ring (5), the inner chamber of housing (15) successively with outer tube (6), seal ring (5), the endoporus of bottom (2) and counter flange (1) is connected.
2. by the described a kind of swivel joint of claim 1, the extended flange face that it is characterized by outer tube (6) is provided with seal wears indicator (21).
3. by the described a kind of swivel joint of claim 1, it is characterized by said seal ring (5) is the sphere graphite-seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02264368 CN2578647Y (en) | 2002-09-12 | 2002-09-12 | Rotary joints |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02264368 CN2578647Y (en) | 2002-09-12 | 2002-09-12 | Rotary joints |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2578647Y true CN2578647Y (en) | 2003-10-08 |
Family
ID=33730592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02264368 Expired - Lifetime CN2578647Y (en) | 2002-09-12 | 2002-09-12 | Rotary joints |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2578647Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101680583B (en) * | 2006-09-21 | 2013-07-24 | 阿恩·赫斯凯伦 | Pipe joint arrangement |
| CN104696521A (en) * | 2013-12-09 | 2015-06-10 | 首航节能光热技术股份有限公司 | Flanged connection centring rotation sealer |
| CN105020510A (en) * | 2015-07-20 | 2015-11-04 | 江苏腾旋科技股份有限公司 | Multi-spring balance type rotary joint |
| CN108131451A (en) * | 2018-02-09 | 2018-06-08 | 安徽中烟再造烟叶科技有限责任公司 | Yankee cylinder steam swivel joint end ring mechanism |
| CN109630779A (en) * | 2018-12-26 | 2019-04-16 | 海宁市英德赛电子有限公司 | Pipeline section bias bindiny mechanism in electronic grade high-purity ammonia conveyance conduit |
| CN110172855A (en) * | 2018-02-21 | 2019-08-27 | 维美德技术有限公司 | Connector for fiber web drying section |
-
2002
- 2002-09-12 CN CN 02264368 patent/CN2578647Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101680583B (en) * | 2006-09-21 | 2013-07-24 | 阿恩·赫斯凯伦 | Pipe joint arrangement |
| CN104696521A (en) * | 2013-12-09 | 2015-06-10 | 首航节能光热技术股份有限公司 | Flanged connection centring rotation sealer |
| CN104696521B (en) * | 2013-12-09 | 2017-07-25 | 首航节能光热技术股份有限公司 | A kind of flange connection center centering rotating seal |
| CN105020510A (en) * | 2015-07-20 | 2015-11-04 | 江苏腾旋科技股份有限公司 | Multi-spring balance type rotary joint |
| CN108131451A (en) * | 2018-02-09 | 2018-06-08 | 安徽中烟再造烟叶科技有限责任公司 | Yankee cylinder steam swivel joint end ring mechanism |
| CN110172855A (en) * | 2018-02-21 | 2019-08-27 | 维美德技术有限公司 | Connector for fiber web drying section |
| CN109630779A (en) * | 2018-12-26 | 2019-04-16 | 海宁市英德赛电子有限公司 | Pipeline section bias bindiny mechanism in electronic grade high-purity ammonia conveyance conduit |
| CN109630779B (en) * | 2018-12-26 | 2021-04-27 | 海宁市英德赛电子有限公司 | Eccentric connecting mechanism for pipe section in electronic grade high-purity ammonia conveying pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: KADANT JOHNSON (WUXI) TECHNOLOGY CO. Free format text: FORMER NAME OR ADDRESS: JOHNSON (WUXI) TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Kadant Johnson (Wuxi) Technology Co., Ltd. Patentee before: Johnson (Wuxi) Technology Co., Ltd. |
|
| C32 | Full or partial invalidation of patent right | ||
| IP01 | Partial invalidation of patent right |
Decision date of declaring invalidation: 20070524 Decision number of declaring invalidation: 9841 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120912 Granted publication date: 20031008 |