CN220037788U

CN220037788U - Unidirectional inner pipe rotary joint

Info

Publication number: CN220037788U
Application number: CN202321573506.2U
Authority: CN
Inventors: 刘伟; 陈玉照; 郭佩贤; 徐自信; 张润霖
Original assignee: New Landtec Sealing Technology Tianjin Co ltd
Current assignee: New Landtec Sealing Technology Tianjin Co ltd
Priority date: 2023-06-19
Filing date: 2023-06-19
Publication date: 2023-11-17
Anticipated expiration: 2033-06-19

Abstract

The utility model discloses a unidirectional inner pipe rotary joint which comprises a flange component, a sealing seat, a transmission shaft, a sealing component, a shell and a rotary component, wherein the transmission shaft is arranged in the shell, the sealing component, the rotary component and the sealing seat are sequentially sleeved outside the transmission shaft, the flange component is arranged at the end part of the shell and is close to one side of the sealing seat, and a debris collecting groove is formed between the flange component and the sealing seat. The utility model has the beneficial effects that the flange seat and the flange sleeve are welded together and fixed on the stirring device through the flange sleeve, the flange seat and the transmission shaft have a certain gap, the flange assembly is prevented from rotating together when the transmission shaft rotates, and the chip collecting groove arranged on the flange seat can collect liquid leaked from the upper cavity and chips generated in the rotating process of the rotating assembly, so that the chips can be prevented from entering the kettle to pollute the medium in the kettle.

Description

Unidirectional inner pipe rotary joint

Technical Field

The utility model relates to the technical field of mechanical sealing, in particular to a one-way inner tube rotary joint.

Background

The rotary joint is used for inputting fluid medium into rotary or reciprocating motion equipment from a static pipeline, the working principle of the rotary joint is that when the temperature of the circulating medium is too high during the working of a screw extruder, for example, the hollow interior of the screw needs to be made into circulating water flow to take heat away, the rotary joint needs to play a role of connecting the screw and a water supply pipe, and the rotary joint is used for inputting liquid into the rotary or reciprocating motion equipment from the side of the pipeline and then discharging the liquid from the rotary or reciprocating motion equipment.

However, most of the rotating equipment at present is easy to generate scraps of graphite static rings generated by rotation, so that the scraps fall into materials to pollute the materials, and the tightness of the device is reduced.

Disclosure of Invention

The utility model aims to solve the problems, and designs a one-way inner pipe rotary joint. Including flange subassembly, sealing seat, transmission shaft, sealing component, casing and rotating assembly, the inside casing is located to the transmission shaft, the transmission shaft is outside to be overlapped in proper order to be equipped with sealing component, rotating assembly and sealing seat, and flange subassembly locates the casing tip just is close to one side of sealing seat, flange subassembly with the sealing seat is formed with the piece collecting vat.

Further, the flange assembly comprises a flange seat and a flange sleeve, the flange sleeve is fixedly connected with the shell, the flange seat extends in the flange sleeve along the radial transmission shaft direction of the flange sleeve, a scrap collecting groove is formed between the flange seat and the flange sleeve, the flange seat extends into the sealing seat, and the transmission shaft penetrates through the flange seat.

Further, a chip removal port is formed in the side wall of the flange sleeve, and the chip removal port extends into the chip collecting groove.

Further, the sealing assembly comprises a stationary ring, a moving ring and a spring, a shaft sleeve is sleeved on the outer fixing sleeve of the transmission shaft, a transmission seat, the moving ring and the stationary ring are sequentially sleeved on the shaft sleeve, the spring is fixed between the moving ring and the transmission seat, and the moving ring and the end face of the stationary ring are in contact with each other.

Further, the casing includes cavity portion and bearing frame, cavity portion and bearing frame fixed connection, the bearing frame with flange cover fixed connection, quiet ring with the mutual adaptation of bearing frame inner wall, cavity portion still ring with the bearing frame encloses into the cavity, the bearing frame with flange subassembly encloses into the cavity down, the import has been seted up to cavity portion lateral wall, the export has been seted up to the bearing frame lateral wall.

The rotating assembly comprises a first bearing and a second bearing which are sleeved on the transmission shaft, and the first bearing and the second bearing are both arranged in the lower cavity.

The side wall of the bearing seat is provided with a leakage detection port which extends to a position between the stationary ring and the first bearing in the second cavity.

The unidirectional inner pipe rotary joint manufactured by the technical scheme of the utility model has the beneficial effects that: the flange seat is welded with the flange sleeve and is fixed on the stirring device through the flange sleeve, the flange sleeve is fixedly connected with the bearing seat, the flange sleeve, the bearing seat and the cavity body form an external structure, the external structure is fixed with the stirring device, the rotating transmission shaft is arranged inside, the flange seat and the transmission shaft have a certain gap, the flange assembly is driven to rotate together when the transmission shaft is prevented from rotating, and the chip collecting tank arranged on the flange seat can collect liquid leaked from the upper cavity and chips generated in the rotating process of the rotating assembly, so that the chips are prevented from entering the kettle to pollute the medium in the kettle.

Drawings

FIG. 1 is a schematic view of a one-way inner tube swivel joint according to the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 at reference A in accordance with the present utility model;

FIG. 3 is an enlarged view of a portion of the utility model at reference B in FIG. 1;

in the figure, 1, a flange assembly; 11. a flange seat; 12. a flange sleeve; 2. a sealing seat; 3. a transmission shaft; 31. a shaft sleeve; 32. a transmission seat; 4. a seal assembly; 41. a stationary ring; 42. a moving ring; 43. a spring; 5. a housing; 51. a cavity portion; 52. a bearing seat; 53. an upper cavity; 54. a lower cavity; 55. an inlet; 56. an outlet; 6. a rotating assembly; 61. a first bearing; 62. a second bearing; 7. a debris collection tank; 8. a chip removal port; 9. a framework oil seal; 10. and detecting a leakage opening.

Detailed Description

The utility model is specifically described below with reference to the accompanying drawings, and as shown in fig. 1-3, the unidirectional inner pipe rotary joint comprises a flange component 1, a sealing seat 2, a transmission shaft 3, a sealing component 4, a shell 5 and a rotary component 6, wherein the transmission shaft 3 is arranged inside the shell 5, the sealing component 4, the rotary component 6 and the sealing seat 2 are sequentially sleeved outside the transmission shaft 3, the flange component 1 is arranged at the end part of the shell 5 and is close to one side of the sealing seat 2, and a debris collecting groove 7 is formed in the flange component 1 and the sealing seat 2. The transmission shaft 3 is sleeved with the shaft sleeve 31, and in the rotation process, scraps generated by mutual friction between the sealing component 4 and the shaft sleeve 31, scraps generated by mutual friction between the shaft sleeve 31 and the rotating component 6 and liquid oozing out from the upper space of the shell 5 drop into the scraps collecting groove 7 to be collected under the action of gravity.

As shown in fig. 1 and 2, the seal assembly 4 includes a stationary ring 41, a moving ring 42 and a spring 43, the outer fixed sleeve of the transmission shaft 3 is provided with a shaft sleeve 31, the transmission shaft 3 is sequentially sleeved with a transmission seat 32, the moving ring 42 and the stationary ring 41, the spring 43 is fixed between the moving ring 42 and the transmission seat 32, and the end surfaces of the moving ring 42 and the stationary ring 41 are in contact with each other. Specifically, the sealing ring 42 and the sealing stationary ring 41 are both sleeved outside the shaft sleeve 31, the sealing assembly 4 is used for isolating the upper part of the housing 5 from the lower part of the housing 5, and the liquid flowing into the upper part of the housing 5 cannot flow into the space of the lower part of the housing 5. The stationary ring 41 and the moving ring 42 form a dynamic sealing contact.

The shell 5 comprises a cavity 51 and a bearing seat 52, the cavity 51 is fixedly connected with the bearing seat 52, the bearing seat 52 is fixedly connected with the flange seat 11, the static ring 41 is mutually matched with the inner wall of the bearing seat 52, the cavity 51, the static ring 41 and the bearing seat 52 enclose an upper cavity 53, the bearing seat 52 and the flange assembly 1 enclose a lower cavity 54, an inlet 55 is formed in the side wall of the cavity 51, and an outlet 56 is formed in the side wall of the bearing seat 52. The cavity 51, the bearing seat 52 and the flange assembly 1 are sequentially and fixedly connected, the sealing assembly 4, the rotating assembly 6 and the transmission shaft 3 are enclosed in the sealing assembly, the upper cavity 53 and the lower cavity 54 are mutually independent, the upper cavity 53 and the lower cavity 54 are isolated through the sealing assembly 4, the upper cavity 53 is communicated with the outside, a medium is introduced into the transmission shaft 31, and for example, the medium further enters the machine where the transmission shaft 31 is located. Specifically, the medium enters the upper cavity 53 through the inlet 55, the transmission shaft 31 has a hollow structure, the medium enters the transmission shaft 31 and further enters the device, and meanwhile, if too much medium enters the device, the medium is temporarily stored by the upper cavity 53 and flows out of the upper cavity 53 along the outlet 56, so that overflow is realized. The lower cavity 54 accommodates the rotating assembly 6 and the sealing seat 2, and during the rotation of the transmission shaft, the rotating assembly 6 rotates the transmission shaft 31 but the bearing seat 52 does not rotate, and the lower cavity 54 is provided with the debris collecting groove 7, so that debris during the rotation of the transmission shaft 31 can be collected.

The rotating assembly 6 comprises a first bearing 61 and a second bearing 62 sleeved on the transmission shaft 3, and the first bearing 61 and the second bearing 62 are both arranged in the lower cavity 54.

As shown in fig. 1 and 3, the flange assembly 1 includes a flange seat 11 and a flange sleeve 12, the flange sleeve 12 is fixedly connected with the housing 5, the flange seat 11 extends inside the flange sleeve 12 along the direction of the radial transmission shaft 3, a debris collecting groove 7 is formed between the flange seat 11 and the flange sleeve 12, the flange seat 11 extends into the sealing seat 2, and the transmission shaft 3 passes through the flange seat 11. The end of the bearing seat 52 is fixed with a flange component 1, the sealing seat 2 is sleeved outside the transmission shaft 3, the flange seat 11 is not contacted with the transmission shaft 3, therefore, the flange seat 11 stretches into the sealing seat 2, and the lower cavity 54 and the inside of the device are separated from each other under the transmission shaft 3. The flange seat 11 radially sets up along the flange cover 12 and is formed with piece collecting vat 7, and the piece that seal assembly 4 and rotating assembly 6 rotatory in-process produced and the liquid of infiltration cavity 54 down in follow last cavity 53 all can be unified collection by piece collecting vat 7, avoids above-mentioned impurity to fall into equipment, causes equipment damage.

The side wall of the flange sleeve 12 is provided with a chip discharge port 8, and the chip discharge port 8 extends into the chip collecting groove 7. After the content of the chip collection tank 7 reaches a limit value, the chips can be discharged through the chip discharge opening 8.

The side wall of the bearing seat 52 is provided with a leak detection port 10, and the leak detection port 10 extends to a position between the stationary ring 41 and the first bearing 61 in the second cavity. The movable ring 42 and the bearing seat 52 are contacted with each other, and a sealing ring for sealing is arranged between the movable ring and the bearing seat 52, but liquid still has the possibility of penetrating into the lower cavity 54, and the leak detection port 10 is arranged on one side of the bearing seat 52 close to the upper cavity 53, so that whether liquid is penetrated or not can be detected conveniently.

Working principle:

the transmission shaft 3 inner shell of the rotary joint is filled with media such as steam, hot water and heat conducting oil, the rotary joint can be applied to stirring equipment, the flange component 1 is fixed on a stirring equipment body, during operation, the flange component 1, the bearing seat 52 and the shell 5 are all static, the sealing component 4 and the rotating component 6 in the shell 5 can rotate along with the rotation of the transmission shaft 3, the whole rotary joint runs stably, the sealing performance is good, the flange seat 11 in the flange component 1 is provided with a debris collecting groove 7, and the debris collecting groove 7 collects leaking liquid of the upper cavity 53, dynamic sealing surfaces and debris generated by the rotation of the rotating component 6 and is discharged through the chip discharge port 8, so that the medium in the kettle is prevented from being polluted.

The above technical solution only represents the preferred technical solution of the present utility model, and some changes that may be made by those skilled in the art to some parts of the technical solution represent the principles of the present utility model, and the technical solution falls within the scope of the present utility model.

Claims

1. The utility model provides a one-way inner tube rotary joint, its characterized in that, including flange subassembly (1), seal holder (2), transmission shaft (3), seal subassembly (4), casing (5) and rotating assembly (6), inside casing (5) are located to transmission shaft (3), outside cover in proper order, seal subassembly (4), rotating assembly (6) and seal holder (2) are equipped with to transmission shaft (3), flange subassembly (1) are located casing (5) tip and be close to one side of seal holder (2), flange subassembly (1) with seal holder (2) are formed with piece collecting vat (7).

2. A unidirectional inner pipe rotary joint as claimed in claim 1, characterized in that the flange assembly (1) comprises a flange seat (11) and a flange sleeve (12), the flange sleeve (12) is fixedly connected with the housing (5), the flange seat (11) extends inside the flange sleeve (12) along the direction of the radial transmission shaft (3), a chip collecting groove (7) is formed between the flange seat (11) and the flange sleeve (12), the flange seat (11) extends into the sealing seat (2), and the transmission shaft (3) passes through the flange seat (11).

3. A unidirectional inner tube rotary joint as claimed in claim 2, characterized in that the side wall of the flange sleeve (12) is provided with a chip discharge opening (8), the chip discharge opening (8) extending into the chip collection tank (7).

4. A unidirectional inner pipe rotary joint as claimed in claim 2, characterized in that the sealing assembly (4) comprises a stationary ring (41), a movable ring (42) and a spring (43), the outer fixed sleeve of the transmission shaft (3) is provided with a shaft sleeve (31), the shaft sleeve (31) is sequentially sleeved with a transmission seat (32), the movable ring (42) and the stationary ring (41), the spring (43) is fixed between the movable ring (42) and the transmission seat (32), and the end surfaces of the movable ring (42) and the stationary ring (41) are in contact with each other.

5. The unidirectional inner tube rotary joint as claimed in claim 4, wherein the housing (5) comprises a cavity (51) and a bearing seat (52), the cavity (51) is fixedly connected with the bearing seat (52), the bearing seat (52) is fixedly connected with the flange sleeve (12), the static ring (41) and the inner wall of the bearing seat (52) are mutually matched, the cavity (51), the static ring (41) and the bearing seat (52) form an upper cavity (53), the bearing seat (52) and the flange assembly (1) form a lower cavity (54), an inlet (55) is formed in the side wall of the cavity (51), and an outlet (56) is formed in the side wall of the bearing seat (52).

6. A unidirectional inner tube rotary joint as claimed in claim 5, characterized in that the rotary assembly (6) comprises a first bearing (61) and a second bearing (62) which are sleeved on the drive shaft (3), the first bearing (61) and the second bearing (62) being both arranged in the lower cavity (54).

7. A unidirectional inner tube rotary joint as claimed in claim 6, characterized in that the side wall of the bearing seat (52) is provided with a leak detection port (10), the leak detection port (10) extending to a position between the stationary ring (41) and the first bearing (61) in the lower cavity (54).