CN211259945U

CN211259945U - Rotary joint

Info

Publication number: CN211259945U
Application number: CN201921931497.3U
Authority: CN
Inventors: 李维俊
Original assignee: Zhejiang Tongji Vocational College of Science and Technology
Current assignee: Zhejiang Tongji Vocational College of Science and Technology
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-08-14
Anticipated expiration: 2029-11-11

Abstract

The utility model relates to a connect the field, the utility model discloses a rotary joint, including rotating sleeve and fixed pipe, the intraductal first through-hole that is equipped with of rotating sleeve, the intraductal gas outlet passageway that still is equipped with of rotating sleeve, fixed pipe is the hollow tube, fixed pipe includes blind end and air inlet, fixed pipe is installed in first through-hole, be equipped with the second through-hole on the lateral wall that is close to the blind end in the fixed pipe, second through-hole intercommunication gas outlet passageway and air inlet, still include apron and end cover, the left end at fixed pipe is installed to the apron, the left end at rotating sleeve is installed to the end cover, be formed with first passageway between end cover and the fixed pipe, the apron sets up in first passageway, be formed with the second passageway between rotating sleeve right-hand member and the fixed pipe right-hand member, the rotating sleeve left end, fixed pipe left end, apron and end cover form the third. The utility model has the advantages of good sealing effect, high safety performance, simple structure, long service life and the like.

Description

Rotary joint

Technical Field

The utility model relates to a connect the field, especially relate to a rotary joint.

Background

The rotary joint is used as a mechanical sealing component and is assembled between the fixed supply pipeline and the rotary roller, so that the dynamic sealing of the fluid medium in the input and output processes is realized. According to different working conditions, the rotary joint is suitable for various media such as steam, cold and hot water, gas, high-temperature hot oil and the like under different pressure, rotating speed and temperature environments. The rotary joint comprises a 180-degree rotary joint and a 90-degree rotary joint, the existing 90-degree rotary joint is poor in sealing performance, and meanwhile, a part of bearing is exposed outside, so that the problems of dust entering and the like are easily caused.

Chinese published patent numbers: CN101936434A provides a rotary joint, the middle section of the joint is installed in the outer section of the inner hole of the housing through bearings arranged at intervals, a spacer is arranged between the two bearings, the spacer is fixedly connected with the housing, the spacer is connected with the joint in a sealing manner, the outer end of the inner hole wall of the housing is provided with a hole check ring, the inner end of the outer wall of the joint is provided with a shaft check ring, the inner section of the inner hole of the housing is provided with a piston storage inner sleeve, the piston storage inner sleeve is sleeved at the inner end of the joint, a gap is arranged between the inner hole of the piston storage inner sleeve and the outer wall of the inner end of the joint, the outer wall of the piston storage inner sleeve is tightly abutted against the housing, and a compressed first elastic support ring is sleeved outside. The rotary joint has no rotating shaft fixing device, so that the connection between the rotating shaft and the fixed shaft is difficult, and the connection between the rotating shaft and the fixed shaft cannot be ensured to be not too loose or too tight.

SUMMERY OF THE UTILITY MODEL

The utility model discloses 90 degrees rotary joint leakproofness is relatively poor among the prior art, and partial bearing exposes the shortcoming in the outside simultaneously, provides a rotary joint.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

a rotary joint comprises a rotary sleeve and a fixed pipe, wherein a first through hole penetrating through the left side wall and the right side wall of the rotary sleeve is arranged in the rotary sleeve, an air outlet channel vertically communicated with the first through hole is also arranged in the rotary sleeve, the fixed pipe is a hollow pipe and comprises a closed end at the left end and an air inlet at the right end, the closed end of the fixed pipe is arranged in the first through hole, a second through hole is arranged on the side wall close to the closed end in the fixed pipe, the second through hole is communicated with the air outlet channel and the air inlet, the rotary joint further comprises a cover plate and an end cover, the cover plate is arranged at the left end of the fixed pipe through a bolt, the fixed pipe is prevented from moving axially, the end cover is arranged at the left end of the rotary sleeve through a bolt, the rotary joint simultaneously plays a role of cover plate, sealing and fixing, a first channel is formed between the end cover plate and the fixed pipe, the inner wall of the left end of the rotating sleeve, the outer wall of the left end of the fixed pipe, the cover plate and the end cover form a third channel together, and bearings for supporting the rotating sleeve to rotate on the fixed pipe are arranged in the second channel and the third channel. The right bearing is sealed in the second channel, and the left bearing is blocked by the gland and the end cover to contact with the outside, so that the possibility of dust falling into the bearing is avoided. The rotary sleeve pipe is connected with the fixed pipe through the bearing, the cover plate and the end cover can fix the fixed pipe and the rotary sleeve pipe, and the rotary joint can be sealed, so that the rotary joint has the characteristics of good sealing effect, high safety performance, simple structure and long service life.

Preferably, the end cover comprises a fixed plate and a sealing convex ring, the fixed plate is in bolted connection with the rotary sleeve, the sealing convex ring extends into the rotary sleeve and forms a third channel together with the rotary sleeve, the fixed pipe and the cover plate, a first groove is arranged on the side wall of the sealing convex ring in contact with the rotary sleeve, a second groove located on the left side of the second channel and a third groove located on the right side of the third channel are respectively arranged on the inner wall of the rotary sleeve, a fourth groove located on the right side of the second channel is arranged on the outer wall of the right end of the fixed pipe, and sealing elements for preventing leakage are arranged in the first groove, the second groove, the third groove and the fourth groove. The sealing element is generally a sealing ring, which prevents the liquid in the pipeline from leaking to the outside through the bearing, and the material of the sealing ring is selected according to the liquid circulating in the rotary joint.

Preferably, the sealing convex ring is further provided with a fifth groove located on the left side of the first groove, the fixing pipe is further provided with a sixth groove located on the right side of the fourth groove, and second sealing elements used for enhancing the sealing performance of the device are arranged in the fifth groove and the sixth groove. The second sealing element generally adopts a sealing ring with dustproof capacity, so that on one hand, dust is prevented from entering the bearing from the outside, and on the other hand, liquid in the pipeline is further prevented from leaking.

Preferably, the rotating sleeve is further provided with oil injection and discharge holes respectively communicated with the second channel and the third channel. Can lubricate and arrange the oil to the joint through annotating the oil drain hole, prevent to connect the appearance because rust leads to the dead condition of card.

Preferably, the rotating sleeve and the fixed pipe are both flange ends at the ends for connecting with other pipelines, i.e. the rotating joint is flanged with other pipelines. The flange connection has the characteristics of convenience in disassembly, high strength and good sealing performance, and the practicability of the rotary joint is improved.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect: the rotary sleeve pipe is connected with the fixed pipe through the bearing, the cover plate and the end cover can fix the fixed pipe and the rotary sleeve pipe, and the rotary joint can be sealed, so that the rotary joint has the characteristics of good sealing effect, high safety performance, simple structure and long service life.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the present invention in use as a whole.

Fig. 3 is an enlarged view of a structure.

Fig. 4 is an enlarged view of the structure of B.

Fig. 5 is a schematic view of the structure of the rotary sleeve.

The names of the parts indicated by the numerical references in the above figures are as follows: the oil-gas separator comprises a rotating sleeve 10, a fixed pipe 11, a first through hole 12, an air outlet channel 13, a closed end 14, an air inlet 15, a second through hole 16, a cover plate 17, an end cover 18, a first channel 19, a second channel 20, a third channel 21, a bearing 22, a first groove 23, a second groove 24, a third groove 25, a fourth groove 26, a sealing element 27, an oil injection and discharge hole 28, a fifth groove 29, a sixth groove 30, a second sealing element 31, a fixing plate 181, and a sealing convex ring 182.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

A rotary joint, as shown in fig. 1-5, comprises a rotary sleeve 10 and a fixed tube 11, wherein a first through hole 12 penetrating through left and right side walls of the rotary sleeve 10 is arranged in the rotary sleeve 10, an air outlet channel 13 vertically communicated with the first through hole 12 is also arranged in the rotary sleeve 10, the fixed tube 11 is a hollow tube, the fixed tube 11 comprises a closed end 14 at the left end and an air inlet 15 at the right end, the closed end 14 of the fixed tube 11 is arranged in the first through hole 12, a second through hole 16 is arranged on the side wall close to the closed end 14 in the fixed tube 11, the second through hole 16 is communicated with the air outlet channel 13 and the air inlet 15, the rotary joint further comprises a cover plate 17 and an end cover 18, the cover plate 17 is arranged at the left end of the fixed tube 11 through bolts, the end cover 18 is arranged at the left end of the rotary sleeve 10 through bolts, a first channel 19 is formed between the end cover plate 18 and the fixed tube 11, the cover plate 17 is arranged in the first channel, the inner wall of the left end of the rotating sleeve 10, the outer wall of the left end of the fixed pipe 11, the cover plate 17 and the end cover 18 together form a third channel 21, and bearings 22 for supporting the rotating sleeve 10 to rotate on the fixed pipe 11 are arranged in the second channel 20 and the third channel 21.

The end cover 18 comprises a fixing plate 181 and a sealing convex ring 182, the fixing plate 181 is in bolted connection with the rotating sleeve 10, the sealing convex ring 182 extends into the rotating sleeve 10 and forms a third channel 21 together with the rotating sleeve 10, the fixing pipe 11 and the cover plate 17, a first groove 23 is arranged on the side wall of the sealing convex ring 182 contacting with the rotating sleeve 10, a second groove 24 positioned on the left side of the second channel 20 and a third groove 25 positioned on the right side of the third channel 21 are respectively arranged on the inner wall of the rotating sleeve 10, a fourth groove 26 positioned on the right side of the second channel 20 is arranged on the outer wall of the right end of the fixing pipe 11, and sealing elements 27 for preventing leakage are arranged in the first groove 23, the second groove 24, the third groove 25 and the fourth groove 26. The sealing member 27 is a sealing ring, and the sealing member 27 is used for preventing the liquid in the pipeline from leaking to the outside through the bearing, so the material of the sealing ring is selected according to the liquid circulating in the rotary joint.

The sealing convex ring 182 is further provided with a fifth groove 29 positioned on the left side of the first groove 23, the fixed pipe 11 is further provided with a sixth groove 30 positioned on the right side of the fourth groove 26, and the fifth groove 29 and the sixth groove 30 are both internally provided with a second sealing element 31 for enhancing the sealing performance of the device. The second sealing member 31 is a sealing ring with dust-proof capability, which prevents dust from entering the bearing from the outside, and further prevents the liquid in the pipeline from leaking out.

Example 2

Embodiment 2 has substantially the same features as embodiment 1 except that the rotary sleeve 10 is further provided with oil filling and discharging holes 28 communicating with the second passage 20 and the third passage 21, respectively.

Example 3

Embodiment 3 has substantially the same features as embodiment 1 except that the ends of the rotary sleeve 10 and the fixed pipe 11 for connection with other pipes are both flanged ends.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.

Claims

1. A rotary joint comprises a rotary sleeve (10) and a fixed pipe (11), a first through hole (12) penetrating through two opposite side walls of the rotary sleeve (10) is formed in the rotary sleeve (10), an air outlet channel (13) vertically communicated with the first through hole (12) is further formed in the rotary sleeve (10), the fixed pipe (11) is a hollow pipe, the fixed pipe (11) comprises a closed end (14) at the left end and an air inlet (15) at the right end, the closed end (14) of the fixed pipe (11) is installed in the first through hole (12), a second through hole (16) is formed in the side wall, close to the closed end (14), of the fixed pipe (11), the second through hole (16) is communicated with the air outlet channel (13) and the air inlet (15), the rotary joint is characterized by further comprising a cover plate (17) and an end cover plate (18), the cover plate (17) is installed at the left end of the fixed pipe (11) through bolts, and the end cover plate (18, a first channel (19) is formed between the end cover (18) and the fixed pipe (11), the cover plate (17) is arranged in the first channel (19), a second channel (20) is formed between the inner wall of the right end of the rotating sleeve (10) and the outer wall of the right end of the fixed pipe (11), the inner wall of the left end of the rotating sleeve (10), the outer wall of the left end of the fixed pipe (11), a third channel (21) is formed by the cover plate (17) and the end cover (18) together, and bearings (22) used for supporting the rotating sleeve (10) to rotate on the fixed pipe (11) are arranged in the second channel (20) and the third channel (21).

2. A swivel joint according to claim 1, wherein: the end cover (18) comprises a fixed plate (181) and a sealing convex ring (182), the fixed plate (181) is in bolt connection with the rotating sleeve (10), the sealing convex ring (182) extends into the rotating sleeve (10) and forms a third channel (21) together with the rotating sleeve (10), the fixed pipe (11) and the cover plate (17), a first groove (23) is arranged on the side wall of the sealing convex ring (182) contacting with the rotating sleeve (10), a second groove (24) positioned on the left side of the second channel (20) and a third groove (25) positioned on the right side of the third channel (21) are respectively arranged on the inner wall of the rotating sleeve (10), a fourth groove (26) positioned on the right side of the second channel (20) is arranged on the outer wall of the right end of the fixed pipe (11), and sealing elements (27) for preventing liquid in the pipe from leaking are arranged in the first groove (23), the second groove (24), the third groove (25) and the fourth groove (26).

3. A swivel joint according to claim 2, wherein: the outer wall of the sealing convex ring (182) is further provided with a fifth groove (29) positioned on the left side of the first groove (23), the outer wall of the fixed pipe (11) is further provided with a sixth groove (30) positioned on the right side of the fourth groove (26), and second sealing elements (31) used for enhancing the sealing performance of the device are arranged in the fifth groove (29) and the sixth groove (30).

4. A swivel joint according to claim 1, wherein: the rotating sleeve (10) is also provided with an oil injection and discharge hole (28) which is respectively communicated with the second channel (20) and the third channel (21).

5. A swivel joint according to claim 1, wherein: the ends of the rotating sleeve (10) and the fixed pipe (11) which are used for connecting with other pipelines are flange ends.