CN218208339U

CN218208339U - Double-gas-path rotary joint

Info

Publication number: CN218208339U
Application number: CN202222026406.XU
Authority: CN
Inventors: 杨代华; 郑尧舜
Original assignee: Shanghai Chengbing Machinery Co ltd
Current assignee: Shanghai Chengbing Machinery Co ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2023-01-03
Anticipated expiration: 2032-08-02

Abstract

The utility model relates to a two gas circuit rotary joint, relate to the field of gas circuit connection technique, it includes the pivot and rotates the casing that sets up in the pivot, first air flue and second air flue have been seted up in the pivot, set up the first gas pocket of first air flue of intercommunication and the second gas pocket of intercommunication second air flue on the lateral wall of pivot, first air inlet ring groove and second air inlet ring groove have been seted up respectively to the position that corresponds first gas pocket and second gas pocket on the inside wall of casing, set up the first air inlet of intercommunication outside and first air inlet ring groove and the second air inlet of intercommunication outside and second air inlet ring groove on the lateral wall of casing, the both sides of first air inlet ring groove and second air inlet ring groove all are provided with the sealing washer on the inside wall of casing. This application is through seting up first air inlet and second air inlet on the casing, connects the trachea in first inlet port and second air inlet during the use, and the one end of seting up first air flue and second air flue with the pivot is connected on rotatory gas appliances, makes things convenient for tracheal connection and arranges.

Description

Double-gas-path rotary joint

Technical Field

The application relates to the field of gas circuit connection technology, in particular to a double-gas circuit rotary joint.

Background

The gas circuit rotary joint is a component which is generally applied in the equipment industry, and the main purpose of the gas circuit rotary joint is to serve as a sealing device for connection of gas input into equipment which rotates or reciprocates from the side of a pipeline.

In the related art, a dual-air-path rotary joint comprises a shell and a shaft core, wherein two air transmission paths are arranged on the shaft core, an air inlet path is arranged on the shell, another air inlet path is arranged on the shaft core, and the two air inlet paths are respectively communicated with the air transmission paths. When the air supply device is used, the air inlet passage of the shell is directly connected with an air pipe, and the air inlet passage of the shaft core is connected with a single-head rotary joint for air supply.

In view of the above-mentioned related art, the inventor believes that the rotary joint needs to connect the air pipes at two different positions when in use, which leads to a messy arrangement of the air pipes.

SUMMERY OF THE UTILITY MODEL

In order to facilitate the arrangement and connection of the air pipe, the application provides a double-air-path rotary joint.

The application provides a two gas circuit rotary joint adopts following technical scheme:

the utility model provides a two gas circuit rotary joint, includes the pivot and rotates the casing that sets up in the pivot first air flue and second air flue have been seted up with the one end of pivot, the intercommunication has been seted up on the lateral wall of pivot the first gas pocket and the intercommunication of first air flue the second gas pocket of second air flue, correspond on the inside wall of casing first gas pocket with first air inlet ring groove and second air inlet ring groove have been seted up respectively to the position of second gas pocket, seted up on the lateral wall of casing the intercommunication outside with the first air inlet of first air inlet ring groove with the intercommunication outside with the second air inlet of second air inlet ring groove, first air inlet ring groove with the both sides of second air inlet ring groove in all be provided with the sealing washer on the inside wall of casing.

By adopting the technical scheme, when in use, the air source is connected to the first air inlet and the second air inlet, one end of the rotating shaft, which is provided with the first air passage and the second air passage, is connected to air-using equipment, compressed air enters the first air passage from the first air inlet through the first air inlet ring groove, and the other path is that the second air inlet enters the second air passage through the second air inlet ring groove; because first air inlet and second air inlet are all seted up on the lateral wall of casing, two tracheas are all connected on the lateral wall of casing, conveniently arrange tracheal, use convenience more.

Optionally, the outside cover of pivot is equipped with the adapter sleeve, first air inlet ring groove with the second air inlet ring groove is all seted up on the inside wall of adapter sleeve, accept to sheathe in and correspond first air inlet ring groove with the position of second air inlet ring groove is run through and has been seted up the air vent be provided with a plurality of sealing rings between the lateral wall of adapter sleeve and the inside wall of casing, the sealing ring is located respectively the both sides of air vent are corresponding first air inlet with the intercommunication is left to the position of second air inlet the air flue of air vent.

By adopting the technical scheme, the bearing sleeve is sleeved on the outer side of the rotating shaft, so that the shell and the rotating shaft cannot be in direct contact in the working process, the abrasion between the shell and the rotating shaft can be reduced, and the bearing sleeve only needs to be replaced when the bearing sleeve is excessively abraded; set up the sealing ring and can improve sealing performance accepting between cover and the casing, simultaneously, leave the air flue in first air inlet and second air inlet department, accepting cover pivoted in-process, first air inlet, second air inlet all can be through the corresponding air vent of air flue intercommunication that corresponds, and the convenience is encircleed gas to first air flue and second air flue.

Optionally, the air flue department is provided with the gas ring, the gas ring cover is established accept to be sheathe in, the gas ring groove has all been seted up on the inside wall of gas ring and the lateral wall, it has two to run through to set up the intercommunication on the gas ring the gas pocket of gas ring groove, the both ends difference butt of gas ring is in on the sealing ring.

By adopting the technical scheme, the air ring is arranged at the air passage, and two ends of the air ring are abutted against the sealing ring, so that the sealing ring can be prevented from randomly moving in the using process to influence the normal work; the inner side and the outer side of the air ring are provided with the air ring grooves, and the air ring is provided with the air conveying holes communicated with the two air ring grooves, so that the first air inlet or the second air inlet can conveniently supply air to the air holes through the air ring.

Optionally, an oil filling port for communicating the outside with the inner cavity is formed in the casing between the first air inlet and the second air inlet, an oil ring is arranged between the two air rings, two ends of the oil ring are respectively abutted to the sealing ring, an oil passage is formed in the outer side wall of the oil ring along the circumferential direction, and a communication oil passage and an oil passage hole in the inner side of the oil ring are formed in the side wall of the oil ring.

Through adopting above-mentioned technical scheme, set up the oiling mouth on the casing, set up the oil ring between two gas rings, through oiling mouth to the inside injection lubricating oil of casing during the use, lubricating oil can be even lubricate the sealing ring lateral wall all around through oil duct runner oil ring on the oil ring, set up the oil through hole on the oil ring, lubricating oil can be lubricated the inner wall of sealing ring from the inboard that the oil through hole flowed into the oil ring to reduce sealing ring, casing and accept the wearing and tearing that the cover is each other.

Optionally, the outer side wall of the oil ring is slidably inserted and matched with the side wall of the housing, the inner diameter of the oil ring is larger than the outer diameter of the bearing sleeve, and an oil inlet is formed in the position, corresponding to the oil ring, of the bearing sleeve in a penetrating manner.

By adopting the technical scheme, the inner diameter of the oil ring is larger than that of the bearing sleeve, the oil inlet hole is formed in the position, corresponding to the oil ring, of the bearing sleeve, when lubricating oil enters the inner side of the oil ring, the lubricating oil can be filled in the oil ring, then the lubricating oil enters the interior of the bearing sleeve through the oil inlet hole and faces the interior of the bearing sleeve, an oil film is formed between the bearing sleeve and the rotating shaft, and the sealing performance between the bearing sleeve and the rotating shaft is improved.

Optionally, bearing holes are formed in two ends of the shell, the bearing holes are coaxial with the rotating shaft, bearings are installed in the bearing holes, and the shell is installed on the rotating shaft through the bearings.

Through adopting above-mentioned technical scheme, the casing passes through the bearing and rotates and install in the pivot, can reduce the friction between casing and the pivot.

Optionally, an oil guide hole is formed in the side wall of the sealing ring along a direction parallel to the axial direction, the oil ring is provided with an open ring, oil guide grooves are formed in two ends of the oil ring along the circumferential direction, and an oil delivery hole is formed in the position, corresponding to the oil guide grooves, of the air ring in a penetrating manner.

Through adopting above-mentioned technical scheme, offer on the seal ring and lead the oilhole in a direction parallel to the axial, set up the oil ring into having the open-ended ring, offer at the both ends of oil ring and lead the oil groove, when lubricating oil entered into the oil ring, lubricating oil flowed in from the opening part of oil ring and led the oil groove, flowed in from leading the oil groove and led oilhole and oil delivery hole again to can lubricate to the seal ring at casing both ends.

Optionally, an oil storage groove is formed in one end, close to the gas ring, of the sealing ring along the circumferential direction.

Through adopting above-mentioned technical scheme, set up the oil storage tank at the sealing ring near gas ring one end, stagger each other at oil transfer hole and oil guide hole back, lubricating oil can flow into the oil transfer hole through the oil storage tank, ensures the transport of lubricating oil, and simultaneously, lubricating oil can be stored in the oil storage tank, makes inner structure can be lubricated for a long time.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the first air inlet and the second air inlet are formed in the shell, when the air compressor is used, an air source is connected to the first air inlet and the second air inlet, one end, provided with the first air passage and the second air passage, of the rotating shaft is connected to air-using equipment, compressed air enters the first air passage from the first air inlet through the first air inlet ring groove, the other end of the rotating shaft is connected to the second air passage from the second air inlet through the second air inlet ring groove, and the first air inlet and the second air inlet are formed in the side wall of the shell and are connected to the side wall of the shell, so that the air pipes are conveniently arranged and more convenient to use;

2. the oil ring is set to be provided with an open ring, the two ends of the oil ring are provided with oil guide grooves, the sealing ring is provided with oil guide holes, the air ring is provided with oil delivery holes, when lubricating oil is injected into the shell from an oil injection port, the lubricating oil can flow into the oil guide grooves through the opening of the oil ring and flows into the oil guide holes through the oil guide grooves, and finally the oil delivery holes passing through the air ring flow to the sealing rings at the two ends of the shell, so that the rotating structures at the two ends inside the shell can be lubricated.

Drawings

FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present application;

FIG. 2 is a cross-sectional view of embodiment 1 of the present application;

FIG. 3 is an enlarged view of area A of FIG. 2;

FIG. 4 is an enlarged view of area B of FIG. 2;

fig. 5 is a partial schematic view of embodiment 2 of the present application.

Reference numerals: 1. a rotating shaft; 11. a first air passage; 111. a first air hole; 12. a second air passage; 121. a second air hole; 13. a limiting bulge; 14. a cover plate; 15. a hollow-out section; 16. a flange; 17. a bearing sleeve; 171. a vent hole; 172. a seal ring; 173. a first air inlet ring groove; 174. a second air inlet ring groove; 175. an oil inlet hole; 18. connecting holes; 2. a housing; 21. a bearing bore; 22. a bearing; 23. a baffle plate; 24. a seal ring; 241. an oil storage tank; 242. an oil guide hole; 25. an air passage; 26. a gas ring; 261. a venting ring groove; 262. a gas transmission hole; 263. an oil transfer hole; 27. an oil filling port; 28. an oil ring; 281. an oil duct; 282. an oil through hole; 283. an oil guide groove; 29. a first air inlet; 290. a second air inlet.

Detailed Description

Example 1:

the application embodiment 1 discloses a double-air-path rotary joint, and referring to fig. 1 and fig. 2, the double-air-path rotary joint comprises a rotating shaft 1 and a shell 2 which is rotatably arranged on the rotating shaft 1, the shell 2 is a cylindrical sleeve, two ends of the shell 2 are coaxially provided with bearing holes 21, and a bearing 22 is arranged in each bearing hole 21; a limiting bulge 13 with the diameter larger than that of the rotating shaft 1 is coaxially and integrally arranged at one end of the rotating shaft 1, and a bearing 22 at one end of the shell 2 abuts against the limiting bulge 13; a cover plate 14 is fixed on one end of the rotating shaft 1 far away from the limiting bulge 13 through a bolt, the cover plate 14 is a circular plate body, and the cover plate 14 is abutted against the inner ring of the bearing 22 far away from one side of the limiting bulge 13.

Referring to fig. 2-4, a first air passage 11 and a second air passage 12 are provided at one end of the rotating shaft 1 far from the cover plate 14, the first air passage 11 and the second air passage 12 are both blind holes, a first air hole 111 communicating with the first air passage 11 is provided at a position on the outer side wall of the rotating shaft 1 near the first air passage 11, and a second air hole 121 communicating with the second air passage 12 is provided at a position on the outer side wall of the rotating shaft 1 near the second air passage 12. The bearing sleeve 17 is sleeved between the two bearings 22 on the outer side of the rotating shaft 1, the bearing sleeve 17 is a cylindrical sleeve, the outer diameter of the bearing sleeve 17 is smaller than the inner diameter of the shell 2, a first air inlet ring groove 173 is formed in the position, corresponding to the first air hole 111, on the inner side wall of the bearing sleeve 17, a second air inlet ring groove 174 is formed in the position, corresponding to the second air hole 121, on the inner side wall of the bearing sleeve 17, and air holes 171 are formed in the positions, corresponding to the first air inlet ring groove 173 and the second air inlet ring groove 174, on the side wall of the bearing sleeve 17. Sealing rings 172 are mounted at both ends of the first and second air

inlet ring grooves

173 and 174 inside the receiving sleeve 17, and the first and second air

inlet ring grooves

173 and 174 are sealed by the sealing rings 172.

Four sealing rings 24 are mounted between the receiving sleeve 17 and the housing 2, the sealing rings 24 are respectively located on both sides of the two ventilation holes 171, and the sealing rings 24 form an annular air duct 25 at the two ventilation holes 171. The housing 2 is provided with a first air inlet 29 and a second air inlet 290 corresponding to the two air passages 25, the first air inlet 29 is communicated with the first air passage 11, and the second air inlet 290 is communicated with the second air passage 12. An air ring 26 is arranged at the position of the air passage 25, the air ring 26 is matched with the shell 2 in a sliding insertion mode, the inner diameter of the air ring 26 is larger than that of the receiving sleeve 17, and two ends of the air ring 26 are abutted against the sealing ring 24. The inner side and the outer side of the gas ring 26 are both provided with a gas communication ring groove 261, the side wall of the gas ring 26 is also provided with a gas transmission hole 262 communicated with the inner side and the outer side gas communication ring groove 261, and the first gas inlet 29 and the second gas inlet 290 correspond to the gas communication ring grooves 261 on the gas ring 26 on the corresponding sides respectively.

And the blocking pieces 23 are arranged at the bottoms of the two bearing holes 21, the blocking pieces 23 are annular sheet bodies, the inner diameter of each blocking piece 23 is larger than that of the receiving sleeve 17, and the sealing rings 24 close to the two bearing holes 21 are abutted to the blocking pieces 23 on the corresponding sides.

An oil filling port 27 is formed in the shell 2 between the first air inlet 29 and the second air inlet 290, and the oil filling port 27 is positioned between two adjacent sealing rings 24 in the middle of the shell 2; an oil ring 28 is arranged between the two sealing rings 24, the outer side wall of the oil ring 28 is matched with the shell 2 in a sliding insertion way, and the inner diameter of the oil ring 28 is larger than that of the bearing sleeve 17; chamfering is carried out at the edge of the outer side wall of the oil ring 28, so that an oil passage 281 is formed between the oil ring 28 and the sealing ring 24 as well as the shell 2; the oil ring 28 is provided as a ring with an opening, and an oil passage 282 communicating the oil passage 281 and the inside of the oil ring 28 is formed at the opening of the oil ring 28. An oil inlet 175 is formed through the receiving sleeve 17 at a position corresponding to the oil ring 28, and when the lubricating oil is filled from the oil inlet 27, the lubricating oil enters the oil ring 28 through the oil passage 281 and the oil passage 282, and then enters the receiving sleeve 17 through the oil inlet 175, so that an oil film is formed between the receiving sleeve 17 and the rotating shaft 1, and the sealing performance between the receiving sleeve 17 and the rotating shaft 1 is improved.

An inwards concave hollow part 15 is processed at one end of the rotating shaft 1 close to the limiting protrusion 13, so that a flange 16 is formed at the end part of the rotating shaft 1, and the rotating shaft 1 is conveniently connected with gas equipment through bolts. The end of the rotating shaft 1 is provided with a connecting hole 18 corresponding to the first air passage 11 and the second air passage 12, the diameter of the connecting hole 18 is larger than that of the first air passage 11 and that of the second air passage 12, a sealing ring 172 is arranged in the connecting hole 18, and when the connecting hole 18 is used, the connecting hole 18 with the larger diameter can be conveniently butted with an air hole of a gas appliance.

The application embodiment 1 discloses a two gas circuit rotary joint's implementation principle does: the shell 2 is provided with a first air inlet 29 and a second air inlet 290, the rotating shaft 1 is provided with a first air passage 11 and a second air passage 12, and the rotating shaft 1 is provided with a bearing sleeve 17 and an air ring 26; when the air pipe is used, the air pipe is connected to the first air inlet 29 and the second air inlet 290, one end, provided with the flange 16, of the rotating shaft 1 is connected with air-using equipment, compressed air enters from the first air inlet 29 and enters the first air passage 11 through the air ring 26 and the vent hole 171 on the corresponding side, the other path of compressed air enters from the second air inlet 290 and enters the second air passage 12 through the air ring 26 and the vent hole 171 on the corresponding side, and air arching is carried out on the air-using equipment; since the first air inlet 29 and the second air inlet 290 are both arranged on the same side of the housing 2, the connection and arrangement of air pipes are convenient, and the space can be effectively saved.

Example 2:

the difference between embodiment 2 and embodiment 1 of the present application is that, referring to fig. 5, oil guide grooves 283 are formed in both ends of the oil ring 28 in the circumferential direction, oil guide holes 242 are formed in the seal ring 24 in the direction parallel to the axis, an oil storage groove 241 is formed in one end of the seal ring 24 close to the air ring 26 in the circumferential direction, and an oil delivery hole 263 is formed in the air ring 26 in the direction parallel to the axis.

The implementation principle of embodiment 2 of the present application is as follows: through leading oil groove 283, leading oilhole 242, oil storage tank 241 and oil delivery hole 263, when injecting lubricating oil into casing 2 from oiling mouth 27, lubricating oil flows into from the opening part of oil ring 28 and leads oil groove 283, flows into sealing ring 24 from leading oil groove 283 again, flows into in the sealing ring 24 that is located the casing 2 both ends through oil delivery hole 263 at last again, can make the sealing ring 24 of keeping away from oiling mouth 27 department in the casing 2 lubricated to effectively improve holistic life.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a two gas circuit rotary joint which characterized in that: including pivot (1) and rotation setting casing (2) on pivot (1) first air flue (11) and second air flue (12) have been seted up with the one end in pivot (1), the intercommunication has been seted up on the lateral wall of pivot (1) first gas pocket (111) and the intercommunication of first gas flue (11) second gas pocket (121) of second air flue (12), correspond on the inside wall of casing (2) first gas pocket (111) with first air pocket (173) and second air inlet ring groove (174) have been seted up respectively in the position of second gas pocket (121), seted up on the lateral wall of casing (2) the intercommunication outside with first air inlet (29) and the intercommunication outside of first air inlet ring groove (173) with second air inlet (290) of second air inlet ring groove (174), first air inlet ring groove (173) with the both sides of second air inlet ring groove (174) in all be provided with sealing washer (172) on the inside wall of casing (2).

2. A dual air path swivel joint as claimed in claim 1, wherein: the outside cover of pivot (1) is equipped with socket sleeve (17), first air inlet ring groove (173) with second air inlet ring groove (174) are all seted up on the inside wall of socket sleeve (17), correspond on socket sleeve (17) first air inlet ring groove (173) with air vent (171) have been seted up to run through in the position of second air inlet ring groove (174) be provided with a plurality of sealing rings (24) between the lateral wall of socket sleeve (17) and the inside wall of casing (2), sealing ring (24) are located respectively the both sides of air vent (171) are corresponding first air inlet (29) with the intercommunication is left to the position of second air inlet (290) air flue (25) of air vent (171).

3. A dual air path swivel joint as claimed in claim 2, wherein: air flue (25) department is provided with gas ring (26), gas ring (26) cover is established on socket (17), air ring groove (261) have all been seted up on the inside wall of gas ring (26) and the lateral wall, it has seted up two to still run through on gas ring (26) the intercommunication the gas transmission hole (262) of air ring groove (261), the both ends butt respectively of gas ring (26) is in on sealing ring (24).

4. A dual air path rotary joint as defined in claim 3 wherein: an oil filling port (27) for communicating the outside and the inner cavity is formed in the shell (2) between the first air inlet (29) and the second air inlet (290), an oil ring (28) is arranged between the two air rings (26), two ends of the oil ring (28) are respectively abutted to the sealing ring (24), an oil passage (281) is formed in the outer side wall of the oil ring (28) along the circumferential direction, and a communication oil passage (281) and an oil through hole (282) in the inner side of the oil ring (28) are formed in the side wall of the oil ring (28).

5. A dual air path rotary joint as defined in claim 4 wherein: the outer side wall of the oil ring (28) is matched with the side wall of the shell (2) in a sliding and inserting mode, the inner diameter of the oil ring (28) is larger than the outer diameter of the bearing sleeve (17), and an oil inlet hole (175) penetrates through the position, corresponding to the oil ring (28), of the bearing sleeve (17).

6. A dual air path swivel joint as claimed in claim 1, wherein: bearing hole (21) have been seted up at the both ends of casing (2), bearing hole (21) with pivot (1) is coaxial, install bearing (22) in bearing hole (21), casing (2) are passed through bearing (22) are installed on pivot (1).

7. A dual air path rotary joint as defined in claim 4 wherein: the oil guide hole (242) is formed in the side wall of the sealing ring (172) in the direction parallel to the axial direction, the oil ring (28) is provided with an open ring, oil guide grooves (283) are formed in the two ends of the oil ring (28) in the circumferential direction, and oil conveying holes (263) penetrate through the position, corresponding to the oil guide grooves (283), of the air ring (26).

8. A dual air path rotary joint as defined in claim 7 wherein: an oil storage groove (241) is formed in one end, close to the air ring (26), of the sealing ring (24) in the circumferential direction.