High-low pressure hidden rotary joint

Abstract

The utility model relates to a high-low pressure hidden type rotary joint which comprises a mounting frame, a shell, a shaft tube and a loop used for transmitting media, the loop is arranged in the mounting frame, the shell and the shaft tube, the shaft tube is sleeved with the shell, one end of the shell is fixedly connected with the mounting frame, the shaft tube is rotationally connected with the shell in the axis direction of the shaft tube, and the shell is fixedly connected with the shaft tube. The loop comprises an inlet formed in the mounting frame in a penetrating mode, an inlet hole formed in the shell in a penetrating mode, a cavity formed between the shell and the shaft sleeve and a flow channel hole formed in the shaft sleeve in a penetrating mode, the side, away from the mounting frame, of the flow channel hole is open, and the inlet, the inlet hole, the cavity and the flow channel hole are all communicated. The rotary joint has the effects that the rotary joint is conveniently mounted, and the stability of the rotary joint is improved.

Description

Technical Field

[0001] The present application relates to the technical field of rotary joints, and in particular to a high-low pressure hidden rotary joint. Background Art

[0002] The rotary joint is a closed rotary connector that can rotate 360 ​​degrees to transport media. It realizes the rotary connection between pipes or between pipes and equipment, and can transport a variety of media.

[0003] In the related art, the rotary joint generally includes a shaft tube and a shell sleeved on the porous shaft tube. A sealed chamber is provided between the inner wall of the shell and the outer wall of the shaft tube. A through hole is formed on the side wall of the shaft tube. The shaft tube is connected to the sealed chamber through the through hole. One end of the shaft tube is opened to form an inlet. An outlet is also provided on the side wall of the shell, and the outlet is connected to the sealed chamber. The shaft tube is connected to the shell in a rotational manner around its axis. The liquid flows in from the inlet of the shaft tube, flows into the sealed chamber through the through hole, and then flows out from the outlet on the shell.

[0004] Regarding the above-mentioned related technologies, when using a rotary joint, one end of the tube needs to be connected to the shaft tube inlet, and one end of the other tube needs to be connected to the shell outlet. This connection method requires a larger space for installing the shell, and when plugging and unplugging the pipe connected to the shell, a force in the direction of the shell axis will be applied to the shell, which has a certain impact on the stability of the shell. Summary of the invention

[0005] In order to facilitate the installation of the rotary joint and improve the stability of the shell, the present application provides a high and low pressure hidden rotary joint.

[0006] The present application provides a high and low pressure hidden rotary joint adopting the following technical solution:

[0007] A high-low pressure hidden rotary joint comprises a mounting frame, a shell, a shaft tube and a circuit for transmitting a medium, wherein the circuit is arranged in the mounting frame, the shell and the shaft tube, the shell is sleeved outside the shaft tube, one end of the shell is fixedly connected to the mounting frame, and the shaft tube is rotatably connected to the shell around its axial direction, the circuit comprises an inlet penetrated on the mounting frame, an inlet hole penetrated in the shell, a chamber formed between the shell and the shaft sleeve, and a flow channel hole penetrated in the shaft sleeve, the flow channel hole is open on the side away from the mounting frame, and the inlet, inlet hole, chamber and flow channel hole are all connected.

[0008] By adopting the above technical solution, the staff fixes the mounting frame on the equipment, connects and fixes one end of the pipe on the mounting frame, connects and fixes the other pipe on the shaft pipe, and the medium flows through the two pipes through the inlet hole, the inlet hole, the chamber and the flow channel hole. Installing two pipelines in this way facilitates the installation of the rotary joint, and at the same time helps to reduce the impact of plugging and unplugging the pipeline on the shell body, and improves the stability and service life of the rotary joint.

[0009] Preferably, a plurality of partition plates are arranged on the shaft tube at intervals along the axial direction, and one side of any of the partition plates along the radial direction of the shaft tube abuts against the inner wall of the shell, and the chamber is divided by two adjacent partition plates, the outer wall of the shaft tube and the inner wall of the shell.

[0010] By adopting the above technical solution, the inner wall of the partition plate abuts against the inner wall of the shell, and a sealed space, ie, a chamber, is formed between the two partition plates and the outer wall of the shaft tube and the inner wall of the shell.

[0011] Preferably, a connecting hole is also provided on the shell, and the connecting hole is penetrated on the shell along the radial direction of the shell, and the inlet hole is penetrated through the shell along the axial direction of the shell from the side close to the mounting frame, and the connecting hole is connected with the inlet hole, and the connecting hole is located between any two adjacent partition plates.

[0012] By adopting the above technical solution, the inlet hole is opened along the axial direction of the shell, and the connecting hole is opened along the radial direction of the shell, which facilitates the processing of the shell.

[0013] Preferably, the shaft tube is also provided with a circulation hole, the circulation hole is penetrated through the shaft sleeve along the radial direction of the shaft sleeve, the flow channel hole is penetrated through the shaft tube along the axial direction of the shaft tube, the circulation hole is connected with the flow channel hole, and the circulation hole is located in the same chamber as the corresponding connecting hole.

[0014] By adopting the above technical solution, the flow hole is opened along the radial direction of the sleeve, and the flow channel hole is opened along the axial direction of the shaft tube, which facilitates the processing of the shaft tube.

[0015] Preferably, a plurality of the circuits are provided, and any of the circuits comprises an inlet penetrating the mounting frame, an inlet hole penetrating the shell, a chamber formed between the shell and the sleeve, and a flow channel hole penetrating the sleeve.

[0016] By adopting the above technical solution, multiple loops enable one rotary joint to connect multiple pairs of pipelines, which helps to improve the use efficiency of the rotary joint.

[0017] Preferably, a mounting plate is also formed on the shaft tube, and the mounting plate is located on the side of the shell away from the mounting frame. A plurality of inclined through holes are also penetrated on the mounting plate, and the plurality of inclined through holes are respectively arranged corresponding to the plurality of flow channel holes. A shaft sleeve is penetrated obliquely inwardly from the side away from the mounting frame to the side close to the mounting frame through any of the inclined through holes. The side of any of the inclined through holes away from the mounting frame is open, and any of the inclined through holes is connected to the corresponding flow channel hole.

[0018] By adopting the above technical solution, the oblique through hole helps to separate multiple pipelines installed on the mounting plate, which helps to facilitate the workers to install different pipelines and facilitate use.

[0019] Preferably, a mounting tube is fixed to the side of the shaft tube facing away from the mounting frame, and a mounting hole is provided through the mounting tube along the axial direction thereof, and the mounting hole is communicated with the flow channel hole.

[0020] By adopting the above technical solution, the pipeline is fixed by the mounting tube and the shaft sleeve. In this way, it helps to further reduce the impact of plugging and unplugging the pipeline and the entire rotary joint, and improve the stability and service life of the rotary joint.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. The mounting frame and the mounting pipe can help reduce the impact of plugging and unplugging the pipeline on the entire rotary joint, and improve the stability and service life of the rotary joint;

[0023] 2. The oblique through hole helps to separate multiple pipes installed on the mounting plate, which helps to facilitate the workers to install different pipes and is convenient for use;

[0024] 3. By providing a plurality of circuits in the rotary joint, it helps to improve the utilization efficiency of the rotary joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an axonometric schematic diagram of a high and low pressure hidden rotary joint mainly embodied in an embodiment of the present application;

[0026] Figure 2 It is an exploded schematic diagram of a high and low pressure hidden rotary joint mainly embodied in an embodiment of the present application;

[0027] Figure 3 It is a partial cross-sectional view of the embodiment of the present application mainly showing the high and low pressure hidden rotary joint;

[0028] Figure 4 is a cross-sectional view mainly showing the internal structure of the mounting frame in the embodiment of the present application;

[0029] Figure 5 It is a cross-sectional view mainly showing the shell structure of the embodiment of the present application.

[0030] Figure numerals: 1. mounting frame; 11. inlet; 111. first liquid inlet; 112. second liquid inlet; 12. outlet; 2. shell; 21. inlet hole; 22. connecting hole; 23. chamber; 3. shaft tube; 31. mounting plate; 32. flow channel hole; 33. flow hole; 34. oblique through hole; 35. partition plate; 36. shaft body; 4. mounting bearing; 5. fixing bearing; 6. gasket; 7. retaining spring; 8. mounting tube; 81. mounting hole; 9. mounting bracket. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-5This application is described in further detail.

[0032] The embodiment of the present application discloses a high-low pressure hidden rotary joint.

[0033] See also Figure 1-Figure 3 The high and low pressure hidden rotary joint includes a mounting frame 1, and a mounting bracket 9 is fixed on one side of the mounting frame 1 in the width direction. A shell 2 is provided on one side of the mounting frame 1 in the thickness direction, and one end of the shell 2 in the axial direction is fixed to the mounting frame 1 by bolts. A shaft tube 3 is coaxially arranged in the shell 2, and the shaft tube 3 penetrates the shell 2 along its axial direction, and the shaft tube 3 is rotatably connected to the shell 2. A mounting tube 8 is also coaxially fixed to the side of the shaft tube 3 in the axial direction away from the mounting frame 1 by bolts. The high and low pressure hidden rotary joint also includes a circuit, and the circuit includes an inlet 11 penetrated on the mounting frame 1, an inlet hole 21 and a connecting hole 22 penetrated in the shell 2, a chamber 23 formed between the shell 2 and the shaft tube 3, a flow channel hole 32 and a flow hole 33 penetrated in the shaft tube 3, an oblique through hole 34 penetrated in the mounting plate 31 of the shaft tube 3, and a mounting hole 81 penetrated in the mounting tube 8. The staff connects one end of the pipeline to an inlet 11 on the mounting frame 1, and connects the other end of the circuit corresponding to the inlet 11, that is, connects the other pipeline to the corresponding mounting hole 81 on the mounting pipe 8. The medium flows out of one pipe, passes through the inlet 11, the inlet hole 21, the connecting hole 22, the chamber 23, the flow channel hole 32, the flow hole 33, the oblique through hole 34 in sequence, and then flows into the other pipeline through the mounting hole 81.

[0034] See also Figure 2-Figure 4 , a total of six loops are provided on the high and low pressure hidden rotary joint. The inlet 11 is provided on one side surface in the width direction of the mounting plate 31, and the axial direction of the inlet 11 is parallel to the axial direction of the mounting plate 31. The inlet 11 includes a first liquid inlet 111 and a second liquid inlet 112. Four first liquid inlets are provided on the mounting frame 1 at intervals, and two second liquid inlets 112 are provided on the mounting plate 31 at intervals. The inlet hole 21 penetrates the shell 2 along the axial direction of the shell 2 to the side away from the mounting frame 1. The axial direction of the inlet hole 21 is parallel to the axial direction of the shell 2. Six inlet holes 21 are provided in a circular array on the shell 2 around the axial direction of the shell 2. The four first liquid inlet holes are respectively connected to four of the inlet holes 21, and the other two inlet holes 21 are respectively connected to the two second liquid inlets 112.

[0035] The mounting frame 1 is also provided with an outlet 12, which is arranged on one side of the mounting frame 1 in the length direction, and the axial direction of the outlet 12 is parallel to the length direction of the mounting frame 1. Two outlets 12 are respectively arranged on both sides of the mounting frame 1 in the length direction, and the two outlets 12 on either side in the length direction are connected to the two first liquid inlets 111 on the corresponding side. When the high and low pressure hidden rotary joint is actually used, the staff connects any pipeline to any inlet 11 or outlet 12 on the mounting frame 1. In this way, it helps to reduce the impact of plugging and unplugging the pipeline on the housing 2, thereby helping to improve the stability and service life of the high and low pressure hidden rotary joint.

[0036] See also Figure 2-Figure 5 The shaft tube 3 includes a shaft body 36, a mounting plate 31 and a partition plate 35. The thickness directions of the mounting plate 31 and the partition plate 35 are parallel to the axial direction of the shaft tube 3. The mounting plate 31 is formed at one end of the shaft body 36 away from the mounting frame 1 along the axial direction of the shaft tube 3. The partition plate 35 is located on the side of the mounting plate 31 close to the mounting frame 1, and multiple partition plates 35 are arranged at intervals along the axial direction of the shaft tube 3. The chamber 23 is formed between the outer wall of any two adjacent partition plates 35 and the shaft body 36 and the inner wall of the shell 2. At least six chambers 23 are arranged at intervals in the axial direction of the shaft body 36. The connecting holes 22 on the shell 2 penetrate the shell 2 along the radial direction of the shell 2. At least six connecting holes 22 are arranged on the shell 2, and the six connecting holes 22 correspond to the six chambers 23 respectively. The six connecting holes 22 on the shell 2 are respectively connected with the six inlet holes 21. In order to facilitate the processing of the shell 2, the connecting hole 22 is divided into two sections on the shell 2, one section passes through the side wall of the shell 2, and the other section passes through the shell 2 from the inside to the corresponding through hole. When the high and low pressure hidden rotary joint is actually used, the section that passes through the side wall of the shell 2 needs to be sealed with a sealing filler.

[0037] The sleeve is also provided with a fixed bearing 5, which is located on the side of the housing 2 close to the mounting frame 1. One end of the sleeve is relatively fixed to the inner ring of the fixed bearing 5 by means of a retaining ring 7 and a bolt, and the outer ring of the fixed bearing 5 is pressed against the inner wall of the housing 2. A gasket 6 is also provided between the bolt and the fixed bearing 5. A locating bearing is also provided on the side of the shaft body 36 away from the mounting frame 1, and the locating bearing is located on the side of the mounting plate 31 close to the mounting frame 1. The inner ring of the locating bearing is pressed against the outer wall of the shaft body 36, and the locating bearing is located at the end of the housing 2 axial direction away from the mounting frame 1. The outer wall of the locating bearing is pressed against the inner wall of the housing 2. The sleeve is rotatably connected to the housing 2 through the fixed bearing 5 and the locating bearing.

[0038] The flow channel hole 32 is provided with a shaft body 36 along the axial direction of the shaft tube 3 from the side away from the mounting frame 1, and six flow channel holes 32 are provided in a circumferential array on the shaft tube 3 around the axial direction of the shaft tube 3. The flow hole 33 is provided with a shaft body 36 along the radial direction of the shaft tube 3. There are six flow holes 33 provided on the shaft tube 3, and the six flow holes 33 correspond to the six chambers 23 respectively, and the six flow channel holes 32 are connected with the six chambers 23 through the six flow holes 33 respectively.

[0039] The inclined through hole 34 is located on the side of the sleeve away from the mounting frame 1 along the axial direction of the sleeve. The inclined through hole 34 is obliquely penetrated from the side away from the mounting frame 1 to the side close to the mounting frame 1. Six inclined through holes 34 are arranged in a circular array on the shaft tube 3 around the axial direction of the shaft tube 3. The six inclined through holes 34 are respectively connected to the six flow channel holes 32.

[0040] The mounting hole 81 penetrates the mounting tube 8 along the axial direction of the mounting tube 8. Six mounting holes 81 are arranged in a circumferential array on the shaft tube 3 around the axial direction of the mounting tube 8, and the six mounting holes 81 are respectively arranged corresponding to the six oblique through holes 34. In actual work, the staff connects the pipeline with the mounting holes 81 accordingly. During the plugging and unplugging process, the staff only needs to fix the pipeline and the mounting tube 8, which helps to reduce the impact on the rotary joint body.

[0041] The implementation principle of a high-low pressure hidden rotary joint in the embodiment of the present application is as follows: when installing the high-low pressure hidden rotary joint, the staff fixes the high-low pressure hidden rotary joint through the mounting bracket 9. In actual use, the staff connects one end of any pipeline to an inlet 11 on the mounting frame 1, and connects the other pipeline to the other end of the circuit corresponding to the inlet 11, that is, the other pipeline is connected to the corresponding mounting hole 81 on the mounting pipe 8. When using the high-low pressure hidden rotary joint, the medium flows out from a pipe installed on the mounting frame 1, passes through the inlet 11, the inlet hole 21, the connecting hole 22, the chamber 23, the flow channel hole 32, the flow hole 33, the oblique through hole 34 and the mounting hole 81 in sequence, that is, a circuit, and then flows into another pipeline. In this way, when the staff plugs in and out the pipelines at both ends of the rotary joint, it will not affect the rotary joint, which helps to improve the stability of the rotary joint and extend the service life of the rotary joint.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high and low pressure hidden rotary joint, characterized in that: The invention comprises a mounting frame (1), a shell (2), a shaft tube (3) and a circuit for transmitting a medium, wherein the circuit is arranged in the mounting frame (1), the shell (2) and the shaft tube (3), the shell (2) is sleeved outside the shaft tube (3), one end of the shell (2) is fixedly connected to the mounting frame (1), and the shaft tube (3) is rotatably connected to the shell (2) around its axis direction, the circuit comprises an inlet (11) penetrating the mounting frame (1), an inlet hole (21) penetrating the shell (2), a chamber (23) formed between the shell (2) and the shaft sleeve, and a flow channel hole (32) penetrating the shaft sleeve, the flow channel hole (32) being open on a side away from the mounting frame (1), and the inlet (11), the inlet hole (21), the chamber (23) and the flow channel hole (32) are all arranged in communication.

2. A high and low pressure hidden rotary joint according to claim 1, characterized in that: A plurality of partition plates (35) are arranged at intervals on the shaft tube (3) along the axial direction, and one side of any of the partition plates (35) along the radial direction of the shaft tube (3) abuts against the inner wall of the shell (2), and the chamber (23) is divided by two adjacent partition plates (35), the outer wall of the shaft tube (3) and the inner wall of the shell (2).

3. A high and low pressure hidden rotary joint according to claim 2, characterized in that: The shell (2) is further provided with a connecting hole (22), the connecting hole (22) being penetrated in the shell (2) along the radial direction of the shell (2), the inlet hole (21) being penetrated in the shell (2) along the axial direction of the shell (2) from a side close to the mounting frame (1), the connecting hole (22) being communicated with the inlet hole (21), and the connecting hole (22) being located between any two adjacent partition plates (35).

4. A high and low pressure hidden rotary joint according to claim 3, characterized in that: The shaft tube (3) is also provided with a circulation hole (33), the circulation hole (33) penetrates the shaft sleeve along the radial direction of the shaft sleeve, the flow channel hole (32) penetrates the shaft tube (3) along the axial direction of the shaft tube (3), the circulation hole (33) is communicated with the flow channel hole (32), and the circulation hole (33) is located in the same chamber (23) as the corresponding communication hole (22).

5. The high and low pressure hidden rotary joint according to claim 1, characterized in that: A plurality of circuits are provided, and any of the circuits comprises an inlet (11) penetrating the mounting frame (1), an inlet hole (21) penetrating the shell (2), a chamber (23) formed between the shell (2) and the shaft sleeve, and a flow channel hole (32) penetrating the shaft sleeve.

6. A high and low pressure hidden rotary joint according to claim 5, characterized in that: The shaft tube (3) is also formed with a mounting plate (31), the mounting plate (31) being located on a side of the housing (2) away from the mounting frame (1), and the mounting plate (31) is also provided with a plurality of oblique through holes (34), the plurality of oblique through holes (34) being respectively arranged corresponding to the plurality of flow channel holes (32), a shaft sleeve being obliquely passed inwardly from a side away from the mounting frame (1) to a side close to the mounting frame (1) in any of the oblique through holes (34), the side of any of the oblique through holes (34) away from the mounting frame (1) being open, and any of the oblique through holes (34) being in communication with the corresponding flow channel hole (32).

7. A high and low pressure hidden rotary joint according to claim 1, characterized in that: A mounting tube (8) is also fixed to the side of the shaft tube (3) facing away from the mounting frame (1), and a mounting hole (81) is provided through the mounting tube (8) along the axial direction thereof, and the mounting hole (81) is communicated with the flow channel hole (32).

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