CN216112670U

CN216112670U - Double-channel rotary joint

Info

Publication number: CN216112670U
Application number: CN202122243798.0U
Authority: CN
Inventors: 张宗杰
Original assignee: Shandong Modern Sealing Technology Equipment Co ltd
Current assignee: Shandong Modern Sealing Technology Equipment Co ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-03-22
Anticipated expiration: 2031-09-16

Abstract

The utility model discloses a double-channel rotary joint which comprises a fixed cylinder, wherein a mandrel is arranged in the middle of two sides penetrating through the fixed cylinder, a filtering mechanism is arranged on one side of the mandrel, liquid inlets are formed in a barrel body penetrating through the top end and the bottom end of the fixed cylinder, a flange plate is arranged on one side, close to the filtering mechanism, of an outer ring of the mandrel, a medium conveying channel is arranged at a position, close to the upper end and the lower end, of a shaft body penetrating through one side of the mandrel, two rings of O-shaped grooves are formed in the outer ring of the mandrel and positioned in the fixed cylinder, ball bearings are arranged in the fixed cylinder and close to the two ends of the fixed cylinder, four dynamic seals are arranged on the outer ring of the mandrel and positioned in the fixed cylinder, except the ball bearings and the O-shaped grooves, and a static seal is arranged on the outer ring of the dynamic seals; according to the double-channel rotary joint, the backflow liquid is filtered, the phenomenon that a passage for backflow is blocked by dirt is avoided, the influence of the rotation of the mandrel on the tail connecting pipe is also avoided, and the double-channel rotary joint has good sealing performance.

Description

Double-channel rotary joint

Technical Field

The utility model relates to the field of rotary joints, in particular to a double-channel rotary joint.

Background

The rotary joint is a pipeline connecting device which is connected with a pipeline and can rotate relatively, and can be used for medium transmission in two different states of gas and liquid; however, the existing double-channel rotary joint has certain defects to be improved when in use, the existing double-channel rotary joint cannot filter the backflow liquid when in use, and the backflow liquid comes from the inside of the machine, so that the backflow liquid contains certain dirt, but the backflow channel of the rotary joint is blocked by the backflow liquid; when the existing double-channel rotary joint is used, the fixed cylinder and the mandrel can rotate relatively, but the rotation of the tail connecting pipe causes poor sealing performance, and the return pipe is inconvenient to install, so that certain influence is brought to actual use.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a double-channel rotary joint which can effectively solve the problem that the traditional double-channel rotary joint in the background technology cannot filter backflow liquid when in use, and the backflow liquid is sourced from the inside of a machine, so that the backflow liquid contains certain dirt and can block a backflow channel of the rotary joint without filtering; when the existing double-channel rotary joint is used, the fixed cylinder and the mandrel can rotate relatively, but the rotation of the tail connecting pipe can cause poor sealing performance and the problem of inconvenience in installation of a return pipe.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a double-channel rotary joint comprises a fixed cylinder, wherein mandrels are arranged in the middle of two sides penetrating through the fixed cylinder, a filtering mechanism is arranged on one side of each mandrel, liquid inlets are formed in a top end and a bottom end cylinder penetrating through the fixed cylinder, a flange plate is arranged on one side, close to the filtering mechanism, of an outer ring of each mandrel, a medium conveying channel is formed in a position, close to the upper end and the lower end, of an axis body on one side penetrating through the mandrels, two rings of O-shaped grooves are formed in positions, located inside the fixed cylinder, of the outer ring of each mandrel, ball bearings are arranged in positions, close to the two ends, of the outer ring of each mandrel, four dynamic seals are arranged in parts, located inside the fixed cylinder, of the outer ring of each mandrel, except the ball bearings and the O-shaped grooves, and static seals are arranged on the outer rings of the dynamic seals;

the compensating spring is installed in the inside of dabber and the one end of keeping away from the ring flange, and tail joint bearing and tail joint pipe are installed to one side of compensating spring, and the sealing washer is installed to one side of tail joint bearing and tail joint pipe.

As a further scheme of the utility model, the filtering mechanism comprises a filtering piece, a filtering net is arranged in the middle of one side piece body penetrating through the filtering piece, and a connecting piece is arranged in the middle of the other side of the filtering piece.

As a further scheme of the utility model, the inner ring of the flange plate is fixedly welded with the outer ring of the mandrel, and a plurality of connecting screw holes are formed through two sides of the flange plate.

As a further scheme of the utility model, the mandrel and the fixed cylinder are sleeved through a ball bearing, and the mandrel is rotatably arranged.

As a further scheme of the utility model, the positions of the two circles of O-shaped grooves correspond to the positions of the two liquid inlets respectively, each liquid inlet corresponds to one medium conveying channel, and the two medium conveying channels are independent.

As a further scheme of the utility model, the tail pipe is positioned at the inner ring of the tail bearing, the outer ring of the tail bearing is fixedly connected with the inner wall of the mandrel, and a passage is arranged in the middle of the tail pipe penetrating through two sides of the mandrel.

As a further scheme of the utility model, the interior of the filter element is communicated with the interior of the connecting element, the connecting element is fixedly welded with the filter element, and the filter mechanism is in threaded connection with the mandrel through one end of the matching passage of the connecting element.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, by arranging the filtering mechanism, after the rotary joint is mechanically connected and installed through the flange plate, the returned liquid is filtered by the filter screen on one side of the filtering piece, so that the dirt in the liquid is intercepted, and the phenomenon that the dirt flows into the filtering piece along with the liquid and then enters a passage with a smaller aperture through the connecting piece to cause the blockage of the passage is avoided;

through setting up the external back flow of pigtail union coupling to at the outer lane installation pigtail bearing of pigtail union, utilize the sealing washer to seal the splice department of pigtail union and passageway, rethread compensating spring promotes pigtail bearing and pigtail union, makes pigtail bearing and pigtail union be connected inseparabler with the sealing washer, and when the dabber rotates, rotation through the pigtail bearing avoids pigtail union synchronous rotation, influences the leakproofness, is convenient for simultaneously and is connected the installation between pigtail union and the back flow.

Drawings

FIG. 1 is a schematic view of the overall structure of a dual channel rotary joint according to the present invention;

FIG. 2 is a schematic view of the internal mechanism of the fixed cylinder in the dual channel rotary joint according to the present invention;

FIG. 3 is a front cross-sectional view of a mandrel in a dual channel rotary joint of the present invention;

fig. 4 is a schematic structural diagram of a filtering mechanism in a dual channel rotary joint according to the present invention.

In the figure: 1. a fixed cylinder; 2. a liquid inlet; 3. a mandrel; 4. a media transport path; 5. a filtering mechanism; 6. a flange plate; 7. a ball bearing; 8. an O-shaped groove; 9. dynamic sealing; 10. static sealing; 11. a compensation spring; 12. a tail bearing is connected; 13. a tail pipe connection; 14. a seal ring; 15. a filter member; 16. filtering with a screen; 17. a connecting member.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

As shown in fig. 1-4, a dual-channel rotary joint comprises a fixed cylinder 1, a mandrel 3 is arranged in the middle of two sides penetrating through the fixed cylinder 1, a filtering mechanism 5 is installed on one side of the mandrel 3, liquid inlets 2 are respectively formed in the top end and the bottom end of the fixed cylinder 1, a flange plate 6 is installed on one side, close to the filtering mechanism 5, of the outer ring of the mandrel 3, a medium conveying channel 4 is respectively formed in positions, close to the upper end and the lower end, of the shaft body on one side, penetrating through the shaft body on one side of the mandrel 3, two rings of O-shaped grooves 8 are formed in positions, located inside the fixed cylinder 1, of the outer ring of the mandrel 3, ball bearings 7 and portions, close to the two ends, of the outer ring of the fixed cylinder 1 are respectively provided with a ball bearing 7, four dynamic seals 9, and a static seal 10 is installed on the outer ring of the dynamic seals 9;

and a compensation spring 11 is arranged at one end, far away from the flange plate 6, in the mandrel 3, a tail-joint bearing 12 and a tail-joint pipe 13 are arranged at one side of the compensation spring 11, and a sealing ring 14 is arranged at one side of the tail-joint bearing 12 and one side of the tail-joint pipe 13.

In this scheme, for the convenience of having set up filtering mechanism 5 to the liquid of backward flow filters, filtering mechanism 5 installs filter screen 16 including filtering piece 15, a side member body that runs through filtering piece 15 between two parties, filters the opposite side of piece 15 and installs connecting piece 17 between two parties.

In this scheme, for the convenience of rotary joint and mechanical connection, the inner circle of ring flange 6 and the outer lane fixed weld of dabber 3, run through the both sides of ring flange 6 and seted up a plurality of and connect the screw.

In this scheme, for the convenience of the rotation of dabber 3, dabber 3 cup joints through ball bearing 7 with fixed section of thick bamboo 1, and dabber 3 is rotatable setting.

In this scheme, in order to carry out the transmission of two kinds of media, the position of two rings of O type grooves 8 corresponds with the position of two inlet 2 each other respectively, and every inlet 2 all corresponds a medium transfer passage 4, and two medium transfer passages 4 are independent each other.

In the scheme, in order not to influence the use of the tail connecting pipe 13 when the mandrel 3 rotates, the tail connecting pipe 13 is positioned at the inner ring of the tail connecting bearing 12, the outer ring of the tail connecting bearing 12 is fixedly connected with the inner wall of the mandrel 3, and a passage is arranged in the middle of two sides penetrating through the mandrel 3.

In this scheme, in order to facilitate filtering piece 15 and being connected with dabber 3, filter the inside of piece 15 and the inside intercommunication of connecting piece 17, and connecting piece 17 and filter piece 15 fixed weld, filter mechanism 5 passes through connecting piece 17 and cooperates one end and dabber 3 threaded connection of route.

It should be noted that, the utility model is a dual-channel rotary joint, when in use, the rotary joint is connected with a machine through a connecting screw hole on a flange 6 matching with a bolt and a nut, then a liquid inlet pipeline is installed on two liquid inlets 2, an external return pipe is connected with the rotary joint through a tail pipe 13, when liquid passes through the liquid inlet 2, the liquid enters a medium conveying channel 4 through the liquid inlet 2 and finally flows into the machine, the liquid in the machine is doped with dirt inside the machine in the process of backflow, the backflow liquid is filtered by a filter screen 16 on one side of a filter element 15 at the moment, the dirt in the liquid is intercepted, the dirt is prevented from flowing into the filter element 15 along with the liquid, and then enters a passage with a small aperture through a connecting element 17, the dirt is removed in the machine with a large space, so as to be convenient for later-stage cleaning, the filtered liquid flows to the return pipe after entering the passage, the tail-connecting bearing 12 is installed on the outer ring of the tail-connecting pipe 13, the joint of the tail-connecting pipe 13 and the passage is sealed by the sealing ring 14, the tail-connecting bearing 12 and the tail-connecting pipe 13 are pushed by the compensating spring 11, so that the tail-connecting bearing 12 and the tail-connecting pipe 13 are connected with the sealing ring 14 more tightly, when the mandrel 3 rotates, the tail-connecting pipe 13 is prevented from rotating synchronously through the rotation of the tail-connecting bearing 12, and after liquid flows into the fixed cylinder 1 through the liquid inlet 2, even when the mandrel 3 rotates, the liquid can firstly flow through the O-shaped groove 8 and then enters the medium conveying channel 4, the liquid flowing into the fixed cylinder 1 is limited by the dynamic seal 9, the liquid is prevented from flowing randomly in the fixed cylinder 1, and the friction force applied when the dynamic seal 9 rotates along with the mandrel 3 is reduced by the static seal 10, so that the abrasion consumption is reduced.

According to the utility model, by arranging the filtering mechanism 5, after the rotary joint is mechanically connected and installed with the machine through the flange 6, the returned liquid is filtered by the filter screen 16 on one side of the filtering piece 15, so that the dirt in the liquid is intercepted, and the phenomenon that the dirt flows into the filtering piece 15 along with the liquid and then enters a passage with a smaller aperture through the connecting piece 17 to cause the blockage of the passage is avoided; connect external back flow through setting up tailed joint pipe 13, and at the outer lane installation tailed joint bearing 12 of tailed joint pipe 13, utilize sealing washer 14 to seal the joint department of tailed joint pipe 13 and route, rethread compensating spring 11 promotes tailed joint bearing 12 and tailed joint pipe 13, make tailed joint bearing 12 and tailed joint pipe 13 be connected with sealing washer 14 inseparabler, when dabber 3 rotates, avoid tailed joint pipe 13 synchronous rotation through the rotation of tailed joint bearing 12, influence the leakproofness, be convenient for simultaneously the connection installation between tailed joint pipe 13 and the back flow.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A binary channels rotary joint which characterized in that: the device comprises a fixed cylinder (1), wherein core shafts (3) are arranged in the middle of two sides penetrating through the fixed cylinder (1), a filtering mechanism (5) is installed on one side of each core shaft (3), liquid inlets (2) are formed in the top end and the bottom end of the fixed cylinder (1), a flange plate (6) is installed on one side, close to the filtering mechanism (5), of the outer ring of each core shaft (3), a medium conveying channel (4) is formed in the position, close to the upper end and the lower end, of the shaft body on one side, penetrating through the core shafts (3), two O-shaped grooves (8) are formed in the position, located inside the fixed cylinder (1), of the outer ring of each core shaft (3), ball bearings (7) are installed in the positions, close to the two ends, of the outer ring of each core shaft (3), four dynamic seals (9) are installed in the part, located inside the fixed cylinder (1), and used for removing the ball bearings (7) and the O-shaped grooves (8), the outer ring of the dynamic seal (9) is provided with a static seal (10);

compensating spring (11) is installed to the inside of dabber (3) and the one end of keeping away from ring flange (6), and tail joint bearing (12) and tail joint pipe (13) are installed to one side of compensating spring (11), and sealing washer (14) are installed to one side of tail joint bearing (12) and tail joint pipe (13).

2. A dual path rotary joint as set forth in claim 1, wherein: filter mechanism (5) including filtering piece (15), pass through one side component body of filtering piece (15) and install filter screen (16) between two parties, filter the opposite side of piece (15) and install connecting piece (17) between two parties.

3. A dual path rotary joint as set forth in claim 1, wherein: the inner ring of the flange plate (6) is fixedly welded with the outer ring of the mandrel (3), and a plurality of connecting screw holes are formed in two sides penetrating through the flange plate (6).

4. A dual path rotary joint as set forth in claim 1, wherein: the mandrel (3) is sleeved with the fixed cylinder (1) through a ball bearing (7), and the mandrel (3) is rotatably arranged.

5. A dual path rotary joint as set forth in claim 1, wherein: the positions of the O-shaped grooves (8) correspond to the positions of the two liquid inlets (2) respectively, each liquid inlet (2) corresponds to one medium conveying channel (4), and the two medium conveying channels (4) are independent from each other.

6. A dual path rotary joint as set forth in claim 1, wherein: the tail connecting pipe (13) is positioned at the inner ring of the tail connecting bearing (12), the outer ring of the tail connecting bearing (12) is fixedly connected with the inner wall of the mandrel (3), and a passage is arranged in the middle of two sides penetrating through the mandrel (3).

7. A dual path rotary joint as set forth in claim 2, wherein: the inside of the filtering piece (15) is communicated with the inside of the connecting piece (17), the connecting piece (17) is fixedly welded with the filtering piece (15), and the filtering mechanism (5) is in threaded connection with the mandrel (3) through one end of the connecting piece (17) matched with the passage.