Heavy rotary joint

Abstract

The utility model relates to the technical field of rotary joints, and discloses a heavy rotary joint which comprises a first shell, the outer wall of the first shell is detachably connected with a second shell, the inner wall of the second shell is provided with an installation assembly, and the outer wall of the second shell is provided with a heat dissipation assembly. The heavy rotary joint is provided with the heat dissipation fins, the fixing frame, the fastening bolts, the through grooves and the protective net, the heat dissipation area is increased by arranging the multiple heat dissipation fins, when the rotary joint works, heat is transmitted to the heat dissipation fins through the shell, the heat dissipation fins can rapidly dissipate the heat to the surrounding environment, and the heat dissipation efficiency is improved. The temperature inside the rotary joint is effectively reduced, the situation that due to too high friction heat accumulation, sealing aging and deformation are accelerated is avoided, the service life of the rotary joint is prolonged accordingly, and by arranging the protective net, good ventilation and heat dissipation are guaranteed, and meanwhile the heat dissipation fins can be well protected.

Description

Technical Field

[0001] This utility model relates to the field of rotary joint technology, specifically a heavy-duty rotary joint. Background Technology

[0002] In the field of industrial production, many devices need to achieve stable transmission of fluid media (such as hydraulic oil, coolant, steam, etc.) between stationary and rotating parts; heavy-duty rotary joints, as a key connecting device, undertake this important task.

[0003] The prior art patent document CN221121353U provides a rotary joint that, through the combined use of an inner limiting sleeve, a stop block, and steel balls, is pressed into the inner cavity of the joint to form a tight fit with the connecting shaft. This avoids the problem of excessive size caused by bearing installation while achieving the basic functions of the existing rotary joint.

[0004] While the existing technology described above can achieve the basic functions of a rotary joint, during use, the hollow shaft inside the rotary joint rotates and rubs against the housing under high-speed conditions, which easily causes frictional heat to accumulate. When the accumulated frictional heat is too high, it will accelerate the aging and deformation of the seal, affecting its service life. This device cannot effectively dissipate frictional heat and can only rely on natural cooling, resulting in poor heat dissipation and failing to meet people's needs. Therefore, we need a heavy-duty rotary joint. Utility Model Content

[0005] The purpose of this invention is to provide a heavy-duty rotary joint to solve the problem mentioned in the background art that the device cannot effectively dissipate frictional heat and can only rely on natural cooling, resulting in poor heat dissipation and failing to meet people's needs.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a heavy-duty rotary joint, comprising a first housing, a second housing detachably connected to the outer wall of the first housing, and an installation assembly provided on the inner wall of the second housing, and a heat dissipation assembly provided on the outer wall of the second housing;

[0007] The mounting assembly includes a mounting groove, and a first bearing is fixedly connected to the inner wall of the mounting groove. A sealing ring is provided on the inner wall of the mounting groove. A fixing groove is opened on the inner wall of the second housing, and a second bearing is fixedly connected to the inner wall of the fixing groove. A rotating groove is opened on the inner wall of the second housing, and a hollow shaft is rotatably connected to the inner wall of the rotating groove. A limit block is fixedly connected to one end of the hollow shaft. A fixing bolt is provided on the outer wall of the first housing, and a connecting pipe is fixedly connected to the top of the first housing.

[0008] The heat dissipation assembly includes heat dissipation fins, and a fixing frame is detachably connected to the outer wall of the second housing. The outer wall of the fixing frame is provided with fastening bolts, and a through groove is opened on the inner wall of the fixing frame. A protective net is fixedly connected to the inner wall of the through groove.

[0009] Preferably, the second housing forms a rotating structure with the hollow shaft via the first bearing, and one end of the hollow shaft passes through the first bearing and extends into the second bearing for connection.

[0010] Preferably, the shape and size of the outer wall of the limiting block match the shape and size of the inner wall of the sealing ring, and the outer wall of the limiting block fits into the inner wall of the sealing ring.

[0011] Preferably, the first housing is fixed to the second housing by a fixing bolt, and one end of the fixing bolt is threaded through the first housing and extends into the second housing for connection.

[0012] Preferably, the inner wall shape and size of the mounting groove match the outer wall shape and size of the sealing ring, and the inner wall of the mounting groove fits into the outer wall of the sealing ring.

[0013] Preferably, there are multiple heat dissipation fins, and the multiple heat dissipation fins are arranged at equal intervals on the second housing.

[0014] Preferably, the second housing is fixed to the fixed frame by fastening bolts, and one end of the fastening bolt is threaded through the fixed frame and extends into the second housing for connection.

[0015] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0016] First, this utility model is equipped with heat dissipation fins, a fixing frame, fastening bolts, a through groove, and a protective net. The multiple heat dissipation fins increase the heat dissipation area. When the rotary joint is working, heat is transferred to the heat dissipation fins through the shell. The heat dissipation fins can quickly dissipate heat to the surrounding environment, effectively reducing the internal temperature of the rotary joint and preventing excessive accumulation of frictional heat, which would accelerate seal aging and deformation, thereby extending the service life of the rotary joint. The protective net ensures good ventilation and heat dissipation while protecting the heat dissipation fins.

[0017] Secondly, this utility model is equipped with an installation groove, a first bearing, a sealing ring, a fixing groove, a second bearing, a rotating groove, a hollow shaft, a limiting block, fixing bolts, and a connecting pipe. When the hollow shaft rotates and drives the limiting block to rotate, the hollow shaft rotates more stably within the first and second bearings. The first and second housings limit the limiting block, making it less prone to displacement during rotation, thereby enhancing the load-bearing capacity of the rotary joint when subjected to large axial and radial forces. The sealing ring enhances the sealing performance and reduces the risk of fluid leakage. By removing the fixing bolts, the first and second housings can be disassembled, facilitating internal maintenance or replacement of parts. The operation is simple and convenient to use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the second housing and hollow shaft structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the first and second housing structures of this utility model;

[0021] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0022] The components are as follows: 1. First housing; 2. Second housing; 3. Mounting assembly; 301. Mounting groove; 302. First bearing; 303. Sealing ring; 304. Fixing groove; 305. Second bearing; 306. Rotating groove; 307. Hollow shaft; 308. Limiting block; 309. Fixing bolt; 310. Connecting pipe; 4. Heat dissipation assembly; 401. Heat dissipation fins; 402. Fixing frame; 403. Fastening bolt; 404. Through groove; 405. Protective net. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1-4As shown, a heavy-duty rotary joint includes a first housing 1, a second housing 2 detachably connected to the outer wall of the first housing 1, and a mounting assembly 3 provided on the inner wall of the second housing 2, and a heat dissipation assembly 4 provided on the outer wall of the second housing 2; the mounting assembly 3 includes a mounting groove 301, and a first bearing 302 is fixedly connected to the inner wall of the mounting groove 301, and a sealing ring 303 is provided on the inner wall of the mounting groove 301; a fixing groove 304 is formed on the inner wall of the second housing 2, and a second bearing 305 is fixedly connected to the inner wall of the fixing groove 304; a rotating... The rotating groove 306 is rotatably connected to the inner wall of the rotating groove 306. A limit block 308 is fixedly connected to one end of the hollow shaft 307. A fixing bolt 309 is provided on the outer wall of the first housing 1, and a connecting pipe 310 is fixedly connected to the top of the first housing 1. The heat dissipation assembly 4 includes heat dissipation fins 401. A fixing frame 402 is detachably connected to the outer wall of the second housing 2. A fastening bolt 403 is provided on the outer wall of the fixing frame 402, and a through groove 404 is opened on the inner wall of the fixing frame 402. A protective net 405 is fixedly connected to the inner wall of the through groove 404.

[0025] Through the above technical solution, the heat dissipation area is increased by setting multiple heat dissipation fins 401. When the rotary joint is working, heat is transferred to the heat dissipation fins 401 through the shell. The heat dissipation fins 401 can quickly dissipate heat to the surrounding environment, effectively reducing the internal temperature of the rotary joint and avoiding accelerated sealing aging and deformation due to excessive frictional heat accumulation, thereby extending the service life of the rotary joint. By setting a protective net 405, the heat dissipation fins 401 can be well protected while ensuring good ventilation and heat dissipation. When the hollow shaft 307 rotates and drives the limiting block 308 to rotate, the hollow shaft 307 rotates more stably within the first bearing 302 and the second bearing 305. The first shell 1 and the second shell 2 limit the limiting block 308, making it less likely to shift during rotation, thereby strengthening the load-bearing capacity of the rotary joint when subjected to large axial and radial forces. By setting a sealing ring 303, the sealing performance is enhanced and the risk of fluid leakage is reduced. By removing the fixing bolts 309, the first shell 1 and the second shell 2 can be disassembled, which is convenient for internal inspection or replacement of parts. The operation is simple and easy to use.

[0026] Specifically, the second housing 2 forms a rotating structure with the hollow shaft 307 via the first bearing 302, and one end of the hollow shaft 307 passes through the first bearing 302 and extends into the second bearing 305 for connection.

[0027] Through the above technical solution, the second housing 2 has an installation groove 301 inside; this enhances the connection between the second housing 2 and the first bearing 302 and the hollow shaft 307. When the hollow shaft 307 rotates, it rotates more stably within the first bearing 302 and the second bearing 305. The outer walls of the connecting pipe 310 and the hollow shaft 307 are both provided with external threads, which facilitates connection with external equipment. In order to ensure the efficiency of heat conduction and the corresponding strength, the materials of the housing, the hollow shaft 307, and the heat dissipation fins 401 can be selected as copper alloy.

[0028] Specifically, the shape and size of the outer wall of the limiting block 308 match the shape and size of the inner wall of the sealing ring 303, and the outer wall of the limiting block 308 fits against the inner wall of the sealing ring 303.

[0029] The above technical solution enhances the connection between the limiting block 308 and the sealing ring 303. The sealing ring 303 strengthens the sealing performance and prevents fluid leakage.

[0030] Specifically, the first housing 1 is fixed to the second housing 2 by a fixing bolt 309, and one end of the fixing bolt 309 is threaded through the first housing 1 and extends into the second housing 2 for connection.

[0031] With the above technical solution, there are multiple fixing bolts 309, which can effectively fix the first housing 1 and the second housing 2 together, making it easy to install and disassemble.

[0032] Specifically, the inner wall shape and size of the mounting groove 301 match the outer wall shape and size of the sealing ring 303, and the inner wall of the mounting groove 301 fits against the outer wall of the sealing ring 303.

[0033] The above technical solution enhances the connection between the mounting groove 301 and the sealing ring 303. By providing the sealing ring 303, the sealing effect at the connection between the first housing 1 and the second housing 2 is enhanced, preventing fluid leakage.

[0034] Specifically, there are multiple heat dissipation fins 401, and the multiple heat dissipation fins 401 are arranged at equal intervals on the second housing 2.

[0035] Through the above technical solution, by setting multiple heat dissipation fins 401, heat can be exchanged on a larger surface area, and the heat transfer efficiency is greatly improved. Compared with the design without heat dissipation fins 401, multiple heat dissipation fins 401 can more efficiently remove the heat generated inside the rotary joint, so that the rotary joint can be kept within a suitable operating temperature range during long-term operation.

[0036] Specifically, the second housing 2 is fixed to the fixed frame 402 by fastening bolts 403, and one end of the fastening bolt 403 is threaded through the fixed frame 402 and extends into the second housing 2 for connection.

[0037] With the above technical solution, there are multiple fastening bolts 403, which can effectively fix the fixing frame 402 to the second housing 2, making it easy to install and disassemble.

[0038] In use, first connect the connecting pipe 310 to the external equipment, and then connect the hollow shaft 307 to the external equipment, allowing fluid to enter the hollow shaft 307. When the external equipment drives the hollow shaft 307 to rotate, the hollow shaft 307 begins to rotate stably under the support of the first bearing 302 and the second bearing 305. The hollow shaft 307 drives the limiting block 308 to rotate within the sealing ring 303. The limiting block 308 is limited by the first housing 1 and the second housing 2, ensuring that the hollow shaft 307 is not easily displaced during rotation, thus enhancing stability. The sealing ring 303 enhances the sealing performance and prevents fluid leakage. As the hollow shaft 307 rotates at high speed, heat is generated due to friction. The heat is conducted to the second housing 2, and from the second housing 2, the heat is conducted to multiple heat dissipation fins 401, which increase heat dissipation. The larger surface area allows for greater heat exchange with the surrounding environment, significantly improving heat transfer efficiency and rapidly dissipating heat into the environment. This effectively reduces the internal temperature of the rotary joint, preventing excessive frictional heat buildup that could accelerate seal aging and deformation. The protective mesh 405 ensures good ventilation and heat dissipation while preventing external debris from contacting the heat dissipation fins 401, thus protecting them. When internal maintenance or component replacement is required, operators can separate the first housing 1 from the second housing 2 by unscrewing multiple fixing bolts 309. This allows for the inspection, repair, or replacement of internal components, completing the entire process. Any content not described in detail in this specification is prior art known to those skilled in the art.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heavy-duty rotary joint, comprising a first housing (1), characterized in that: The outer wall of the first housing (1) is detachably connected to the second housing (2), and the inner wall of the second housing (2) is provided with an installation component (3), and the outer wall of the second housing (2) is provided with a heat dissipation component (4); The mounting assembly (3) includes a mounting groove (301), and a first bearing (302) is fixedly connected to the inner wall of the mounting groove (301). A sealing ring (303) is provided on the inner wall of the mounting groove (301). A fixing groove (304) is opened on the inner wall of the second housing (2), and a second bearing (305) is fixedly connected to the inner wall of the fixing groove (304). A rotating groove (306) is opened on the inner wall of the second housing (2), and a hollow shaft (307) is rotatably connected to the inner wall of the rotating groove (306). A limit block (308) is fixedly connected to one end of the hollow shaft (307). A fixing bolt (309) is provided on the outer wall of the first housing (1), and a connecting pipe (310) is fixedly connected to the top of the first housing (1). The heat dissipation assembly (4) includes heat dissipation fins (401), and the outer wall of the second housing (2) is detachably connected to a fixing frame (402). The outer wall of the fixing frame (402) is provided with fastening bolts (403), and the inner wall of the fixing frame (402) is provided with a through groove (404). The inner wall of the through groove (404) is fixedly connected with a protective net (405).

2. The heavy-duty rotary joint according to claim 1, characterized in that: The second housing (2) forms a rotating structure with the hollow shaft (307) via the first bearing (302), and one end of the hollow shaft (307) passes through the first bearing (302) and extends into the second bearing (305) for connection.

3. A heavy-duty rotary joint according to claim 1, characterized in that: The outer wall shape and size of the limiting block (308) match the inner wall shape and size of the sealing ring (303), and the outer wall of the limiting block (308) fits against the inner wall of the sealing ring (303).

4. A heavy-duty rotary joint according to claim 1, characterized in that: The first housing (1) is fixed to the second housing (2) by a fixing bolt (309), and one end of the fixing bolt (309) is threaded through the first housing (1) and extends into the second housing (2) for connection.

5. A heavy-duty rotary joint according to claim 1, characterized in that: The inner wall shape and size of the mounting groove (301) match the outer wall shape and size of the sealing ring (303), and the inner wall of the mounting groove (301) fits against the outer wall of the sealing ring (303).

6. A heavy-duty rotary joint according to claim 1, characterized in that: The number of heat dissipation fins (401) is multiple, and the multiple heat dissipation fins (401) are arranged at equal intervals on the second housing (2).

7. A heavy-duty rotary joint according to claim 1, characterized in that: The second housing (2) is fixed to the fixed frame (402) by fastening bolts (403), and one end of the fastening bolt (403) is threaded through the fixed frame (402) and extends into the second housing (2) for connection.

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