CN105371037A - Rotary joint of clearance sealing structure - Google Patents
Rotary joint of clearance sealing structure Download PDFInfo
- Publication number
- CN105371037A CN105371037A CN201510906666.8A CN201510906666A CN105371037A CN 105371037 A CN105371037 A CN 105371037A CN 201510906666 A CN201510906666 A CN 201510906666A CN 105371037 A CN105371037 A CN 105371037A
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- CN
- China
- Prior art keywords
- outer tube
- sealing structure
- housing
- hole
- ball bearing
- 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.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
- F16L39/06—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies of the multiline swivel type, e.g. comprising a plurality of axially mounted modules
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention relates to a rotary joint of a clearance sealing structure. The rotary joint comprises a shell and an outer pipe arranged in the shell. The rotary joint is characterized in that clearance sealing is adopted for the outer pipe and the shell; an end cover and a tail cover are arranged at the front end and the rear end of the shell respectively and are arranged on the outer pipe in a sleeving mode; the outer pipe is installed in the shell through a first deep groove ball bearing and a second deep groove ball bearing; the outer pipe is provided with oil inlet holes and an air inlet hole, and oil outlet holes and leakage holes are formed in the outer circle of the shell. The rotary joint of the clearance sealing structure is a high-pressure and high-speed hydraulic rotary joint of the clearance sealing structure special for hydraulic equipment, is good in sealing performance and low in leakage rate, guarantees the work stability of a hydraulic system and improves the work efficiency of the equipment.
Description
Technical field
The present invention relates to a kind of swivel joint, especially clearance sealing structure swivel joint, belong to hydraulic seal technical field.
Background technique
Swivel joint is flowing medium (liquid, gas etc.) is input to rotating equipment connection sealed member from static duct, is to solve run, drip, leak, energy saving, protection of the environment, the seal arrangement improved working conditions.In existing technology, mainly there is following defect in swivel joint: cannot meet existing equipment use operating mode, hydraulic work system instability, inefficiency, leakage rate large, affect manufacturing schedule, profile is coarse, simple and crude.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of clearance sealing structure swivel joint, for hydraulic equipment, logical oil, gas are effective, and sealing stability is good, maintenance period and long service life.
According to technological scheme provided by the invention, a kind of clearance sealing structure swivel joint, comprises housing and is arranged on the outer tube in housing, it is characterized in that: described outer tube and housing adopt clearance seal; The front-end and back-end of described housing are respectively equipped with end cap and tail-hood, and end cap and tail-hood are all set on outer tube; Described outer tube is arranged in housing by the first deep groove ball bearing and the second deep groove ball bearing; Described outer tube is provided with oil inlet hole and inlet hole, and the cylindrical of described housing is provided with oil outlet and Leak hole.
Sealed by an O type circle and the first outside framework oil seal between described end cap and outer tube; Sealed by the 2nd O type circle and the second outside framework oil seal between described tail-hood and outer tube.
The internal surface of described housing is provided with annular groove, and annular groove is communicated with oil inlet hole and oil outlet.
Be provided with leakage through hole on the housing, the two-port of leaking through hole is communicated to the first deep groove ball bearing and the second deep groove ball bearing respectively, leaks through hole and is communicated with Leak hole.
The end of described outer tube is provided with bolt fastening structure, the afterbody mounting plane sealing high-speed joint of outer tube.
Clearance sealing structure swivel joint provided by the present invention is the high-voltage high-speed hydraulic rotary joint of the special clearance sealing structure of hydraulic equipment, good airproof performance, and leakage rate is low, ensures the working efficiency of hydraulic work system stability and raising equipment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the left view of Fig. 1.
Embodiment
Below in conjunction with concrete accompanying drawing, the invention will be further described.
As Fig. 1, shown in Fig. 2: the swivel joint of the special clearance sealing structure of described hydraulic equipment comprises the 3rd O type circle 1, outer tube 2, end cap 3, first hexagon socket cap head screw 4, one O type circle 5, first outside framework oil seal 6, first deep groove ball bearing 7, first shaft block ring 8, housing 9, second deep groove ball bearing 10, 2nd O type circle 11, tail-hood 12, second hexagon socket cap head screw 13, second shaft block ring 14, second outside framework oil seal 15, plane sealing swivel joint 16, oil inlet hole 17, inlet hole 18, oil outlet 19, Leak hole 20, spline hole 21, leak through hole 22 etc.
As shown in Figure 1, the outer tube 2 that the present invention includes housing 9 and be arranged in housing 9; The front-end and back-end of described housing 9 are respectively equipped with end cap 3 and tail-hood 12, and end cap 3 and tail-hood 12 are fixed on housing 9 respectively by the first hexagon socket cap head screw 4 and the second hexagon socket cap head screw 13, and end cap 3 and tail-hood 12 are all set on outer tube 2; Sealed by an O type circle 5 and the first outside framework oil seal 6 between described end cap 3 and outer tube 2; Sealed by the 2nd O type circle 11 and the second outside framework oil seal 15 between described tail-hood 12 and outer tube 2; Described outer tube 2 is arranged in housing 9 by the first deep groove ball bearing 7 and the second deep groove ball bearing 10, and the first deep groove ball bearing 7 and the second deep groove ball bearing 10 are fixed respectively by the first shaft block ring 8 and the second shaft block ring 14;
As shown in Figure 2, described outer tube 2 is provided with two oil inlet holes 17 and an inlet hole 18, and oil inlet hole 17 is respectively equipped with the 3rd O type circle 1 with the port of inlet hole 18; The cylindrical of described housing 9 is provided with two oil outlets, 19, two Leak holes, 20, spline hole 21, and the internal surface of housing 9 is provided with two annular grooves, and annular groove is communicated with oil inlet hole 17 and oil outlet 19;
Described housing 9 is provided with two and leaks through hole 22, the two-port of leaking through hole 22 is communicated to the first deep groove ball bearing 7 and the second deep groove ball bearing 10 respectively, leak through hole 22 to be communicated with Leak hole 20, for will the fluid expulsion such as finish of leakage between outer tube 2 and housing 9;
The end of described outer tube 2 is provided with bolt fastening structure, and bolt fastening structure is bolted with rotation axle head; The afterbody mounting plane sealing high-speed joint 16 of described outer tube 2;
Described outer tube 2 adopts clearance seal, good airproof performance with housing 9, and leakage rate is low, and hydraulic work system is stable, efficient.
Working principle of the present invention and working procedure: as shown in Figure 1 and Figure 2, flowing medium such as finish etc. enters outer tube 2 by oil inlet hole 17, exports and flows into annular groove, then discharge through oil outlet 19 via oil inlet hole 17; Because outer tube 2 and housing 9 adopt clearance seal, the finish exporting outflow by oil inlet hole 17 has and leaks to the first deep groove ball bearing 7 and the space between the second deep groove ball bearing 10 and housing 9 on a small quantity, and the finish of leakage can be discharged through Leak hole 20 by leaking through hole 22.At end cap 3 be respectively equipped with the first outside framework oil seal 6 and the second outside framework oil seal 15 between tail-hood 12 and outer tube 2, wear resistance is good, and frictional force is little, and compressibility is little and stretchability good.
Claims (5)
1. a clearance sealing structure swivel joint, comprises housing (9) and is arranged on the outer tube (2) in housing (9), it is characterized in that: described outer tube (2) and housing (9) adopt clearance seal; The front-end and back-end of described housing (9) are respectively equipped with end cap (3) and tail-hood (12), and end cap (3) and tail-hood (12) are all set on outer tube (2); Described outer tube (2) is arranged in housing (9) by the first deep groove ball bearing (7) and the second deep groove ball bearing (10); Described outer tube (2) is provided with oil inlet hole (17) and inlet hole (18), and the cylindrical of described housing (9) is provided with oil outlet (19) and Leak hole (20).
2. clearance sealing structure swivel joint as claimed in claim 1, be is characterized in that: sealed by an O type circle (5) and the first outside framework oil seal (6) between described end cap (3) and outer tube (2); Sealed by the 2nd O type circle (11) and the second outside framework oil seal (15) between described tail-hood (12) and outer tube (2).
3. clearance sealing structure swivel joint as claimed in claim 1, is characterized in that: the internal surface of described housing (9) is provided with annular groove, and annular groove is communicated with oil inlet hole (17) and oil outlet (19).
4. clearance sealing structure swivel joint as claimed in claim 1, it is characterized in that: be provided with on described housing (9) and leak through hole (22), the two-port of leaking through hole (22) is communicated to the first deep groove ball bearing (7) and the second deep groove ball bearing (10) respectively, leaks through hole (22) and is communicated with Leak hole (20).
5. clearance sealing structure swivel joint as claimed in claim 1, is characterized in that: the end of described outer tube (2) is provided with bolt fastening structure, afterbody mounting plane sealing high-speed joint (16) of outer tube (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510906666.8A CN105371037A (en) | 2015-12-10 | 2015-12-10 | Rotary joint of clearance sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510906666.8A CN105371037A (en) | 2015-12-10 | 2015-12-10 | Rotary joint of clearance sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105371037A true CN105371037A (en) | 2016-03-02 |
Family
ID=55373485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510906666.8A Pending CN105371037A (en) | 2015-12-10 | 2015-12-10 | Rotary joint of clearance sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105371037A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247059A (en) * | 2016-08-29 | 2016-12-21 | 北京精雕科技集团有限公司 | A kind of multichannel gas high-speed joint |
| CN110873253A (en) * | 2019-11-21 | 2020-03-10 | 广东今科机床有限公司 | Double-channel high-pressure high-speed composite sealing rotary joint |
| CN112856082A (en) * | 2021-01-07 | 2021-05-28 | 宋丙臣 | Self-adaptive 360-degree hydraulic adapter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110266732A1 (en) * | 2010-04-30 | 2011-11-03 | Hon Hai Precision Industry Co., Ltd. | Rotary joint and worktable using the same |
| CN202418992U (en) * | 2012-01-06 | 2012-09-05 | 焦作市华科液压机械制造有限公司 | Hydraulic rotary joint of collapsible cylinder of steel band coiler |
| CN202546094U (en) * | 2012-04-24 | 2012-11-21 | 浙江柏润液压有限公司 | Large rotary oil feeder |
| EP2799752A1 (en) * | 2013-05-01 | 2014-11-05 | Nippon Pillar Packing Co., Ltd. | Multi-port rotary joint |
| CN205745800U (en) * | 2015-12-10 | 2016-11-30 | 江苏腾旋科技股份有限公司 | Clearance sealing structure swivel joint |
-
2015
- 2015-12-10 CN CN201510906666.8A patent/CN105371037A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110266732A1 (en) * | 2010-04-30 | 2011-11-03 | Hon Hai Precision Industry Co., Ltd. | Rotary joint and worktable using the same |
| CN202418992U (en) * | 2012-01-06 | 2012-09-05 | 焦作市华科液压机械制造有限公司 | Hydraulic rotary joint of collapsible cylinder of steel band coiler |
| CN202546094U (en) * | 2012-04-24 | 2012-11-21 | 浙江柏润液压有限公司 | Large rotary oil feeder |
| EP2799752A1 (en) * | 2013-05-01 | 2014-11-05 | Nippon Pillar Packing Co., Ltd. | Multi-port rotary joint |
| CN205745800U (en) * | 2015-12-10 | 2016-11-30 | 江苏腾旋科技股份有限公司 | Clearance sealing structure swivel joint |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247059A (en) * | 2016-08-29 | 2016-12-21 | 北京精雕科技集团有限公司 | A kind of multichannel gas high-speed joint |
| CN110873253A (en) * | 2019-11-21 | 2020-03-10 | 广东今科机床有限公司 | Double-channel high-pressure high-speed composite sealing rotary joint |
| CN112856082A (en) * | 2021-01-07 | 2021-05-28 | 宋丙臣 | Self-adaptive 360-degree hydraulic adapter |
| CN112856082B (en) * | 2021-01-07 | 2022-11-18 | 宁波友联智能科技有限公司 | Self-adaptive 360-degree hydraulic adapter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160302 |
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| RJ01 | Rejection of invention patent application after publication |