Modular rotary joint with easy replacement of seal rings

Abstract

The utility model relates to rotary joint technical field discloses a modularization rotary joint convenient to replace sealing ring, including shell, spring, sealing ring, sealing device and the modularization mechanism of detachable sliding installation in the inside of shell, the modularization mechanism top is pressed by sealing device and reaches, the modularization mechanism includes rotating device, the bottom sliding joint of rotating device has locking ring, the inside of locking ring is provided with rubber block and lock tongue, the lock tongue can radial stretch out and be clamped into the inner wall of shell, lock tongue bottom is provided with the lock groove of adaptation to the sliding insertion of dismounting key. The utility model discloses through setting up quick unlocking structure, has realized the integral quick dismounting of rotating device and the replacement of sealing element, and the operation is simple, saves time and labour, and through setting up lubricating oil circuit, has facilitated the maintenance of internal carbonization bearing, has prolonged the service life of device.

Description

Technical Field

[0001] This utility model relates to the field of rotary joint technology, and in particular to a modular rotary joint that facilitates the replacement of sealing rings. Background Technology

[0002] Rotary joints are key connecting devices for transmitting fluid media between fixed pipes and rotating components. They are widely used in various industrial machinery. In order to ensure that the fluid does not leak during transmission, a sealing device must be installed inside the rotary joint. The sealing device will be subjected to continuous friction and wear during equipment operation and is a consumable part that needs to be replaced periodically.

[0003] In existing technologies, the housing of rotary joints is fastened to the internal rotating components using flanges and bolts, or by large-diameter threaded connections. When replacing internal sealing devices or sealing rings, operators must disassemble numerous bolts one by one, or use specialized tools to unscrew the heavy housing. This disassembly and assembly process is extremely cumbersome, time-consuming, and labor-intensive, severely impacting the maintenance efficiency of production equipment. Furthermore, the internal rotating core of existing rotary joints, especially critical support components like carbonized bearings, is often deeply encapsulated within the structure. The design of lubrication and maintenance channels has not been optimized, making it difficult to conveniently add lubricant during routine maintenance. Operators can only perform maintenance during major equipment overhauls and complete disassembly of the rotary joint. This complexity leads to untimely bearing lubrication, accelerating component wear and shortening the overall service life of the rotary joint.

[0004] Therefore, this utility model proposes a modular rotary joint that facilitates the replacement of the sealing ring to overcome the shortcomings of the prior art. Utility Model Content

[0005] In view of the problems in the prior art, such as the cumbersome and time-consuming process of replacing the sealing device or sealing ring after wear, the inconvenience of lubrication and maintenance of the internal carbonized bearing, which affects the service life, the present invention aims to provide a modular rotary joint with an improved structure that can effectively solve the above problems and facilitate the replacement of the sealing ring.

[0006] This utility model provides a modular rotary joint for easy replacement of sealing rings, comprising: a housing, a spring, a sealing ring, a sealing device, and a modular mechanism; the spring is disposed inside the housing, the sealing ring is movably connected to the bottom of the spring, the sealing device is movably connected to the bottom of the sealing ring, and the modular mechanism is detachably slidably installed inside the housing, with the top end of the modular mechanism being pressed against by the sealing device.

[0007] The modular mechanism includes a rotating device, inside which a carbonized bearing is fixedly connected. The carbonized bearing supports the rotating device in rotation relative to the outer casing. The bottom of the rotating device is connected to and fixed with an outlet.

[0008] A locking ring is slidably connected to the bottom outer periphery of the rotating device. A moving groove is provided inside the locking ring. A rubber block is fixedly connected inside the moving groove. A locking tongue is fixedly connected to the end of the rubber block away from the outlet. The locking tongue can extend radially out of the locking ring to engage with the inner wall of the housing. A locking groove is provided at the bottom of the locking tongue. The locking groove is adapted to allow a disassembly key to be slidably inserted to push the locking tongue to squeeze the rubber block and unlock the device.

[0009] Preferably, a limiting block is fixedly connected to the outer wall of the locking tongue, and the limiting block is used to provide guidance and reinforcement when the locking tongue moves in the movement groove.

[0010] Preferably, the modular mechanism further includes a maintenance mechanism, which is disposed on the rotating device and includes a mounting groove formed on the outer wall of the rotating device.

[0011] Preferably, the inner wall of the mounting groove is fixedly connected to an oil injection port, which is used to inject lubricating oil into the carbonized bearing from the outside of the housing.

[0012] Preferably, the maintenance mechanism further includes an annular lubrication groove formed inside the rotating device, the annular lubrication groove being connected to the oil inlet and surrounding the carbonized bearing.

[0013] Preferably, the maintenance mechanism further includes a trapezoidal groove formed on the inner wall of the rotating device, the trapezoidal groove being connected to the oil inlet and used to guide lubricating oil to the upper and lower end faces of the carbonized bearing.

[0014] Preferably, the oil inlet is connected to the annular lubrication groove and the trapezoidal groove via the mounting groove, and the annular lubrication groove and the trapezoidal groove together form a lubrication oil passage surrounding the carbonized bearing.

[0015] Preferably, the outlet is integrally fixedly connected to the bottom of the rotating device, and the outlet rotates synchronously with the rotating device.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model, by setting a modular mechanism, includes a rotating device. The bottom of the rotating device is provided with a quick unlocking structure consisting of a locking ring, a locking tongue, a rubber block, and a locking groove. The locking groove is adapted to be inserted by disassembling a key to achieve unlocking. This solves the problem in the prior art that after the sealing device or sealing ring of the rotary joint is worn, the replacement process requires disassembling a large number of parts, which is cumbersome, time-consuming, and labor-intensive. It achieves the effect of allowing the entire rotating device to slide out of the shell easily, thereby realizing the quick replacement of the sealing device and sealing ring, which is simple to operate and saves time and effort.

[0018] 2. This utility model, by setting a maintenance mechanism on the rotating device, includes an installation groove on the outer wall of the rotating device, an oil inlet fixed to the inner wall of the installation groove, and an annular lubrication groove and a trapezoidal groove inside the rotating device. The oil inlet communicates with the annular lubrication groove and the trapezoidal groove to form a lubrication oil circuit. This solves the problem in the prior art that the carbonized bearing inside the rotary joint cannot be lubricated and maintained, resulting in complicated maintenance and short bearing life. It enables operators to conveniently lubricate the carbonized bearing from the outside through the oil inlet, simplifying maintenance operations and extending the service life of the carbonized bearing. Attached Figure Description

[0019] Figure 1 A front perspective view of a modular rotary joint for easy replacement of sealing rings proposed in this utility model;

[0020] Figure 2 This is a front sectional view of the housing of a modular rotary joint that facilitates the replacement of sealing rings, as proposed in this utility model.

[0021] Figure 3 A perspective sectional view of the housing of a modular rotary joint that facilitates the replacement of sealing rings, as proposed in this utility model.

[0022] Figure 4 This is a structural schematic diagram of a maintenance mechanism for a modular rotary joint that facilitates the replacement of sealing rings, as proposed in this utility model.

[0023] Figure 5 This is a front sectional view of the rotating device of a modular rotary joint that facilitates the replacement of sealing rings, as proposed in this utility model.

[0024] Figure 6 This is a three-dimensional sectional view of the rotating device of a modular rotary joint that facilitates the replacement of sealing rings, as proposed in this utility model.

[0025] Figure 7 This is a cross-sectional view of the locking ring of a modular rotary joint that facilitates the replacement of the sealing ring, as proposed in this utility model.

[0026] Legend:

[0027] 1. Outer shell; 2. Modular mechanism; 201. Rotating device; 202. Locking tongue; 203. Limiting block; 204. Rubber block; 205. Lock groove; 206. Removal key; 207. Locking ring; 208. Moving groove; 3. Maintenance mechanism; 301. Oil inlet; 302. Annular lubrication groove; 303. Trapezoidal groove; 304. Mounting groove; 4. Spring; 5. Sealing ring; 6. Sealing device; 7. Carbonized bearing; 8. Outlet. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] Example:

[0030] Please refer to Figures 1 to 7 This utility model provides a modular rotary joint that facilitates the replacement of sealing rings. This utility model aims to solve the problems existing in the prior art where the replacement of rotary joints after the sealing ring or sealing device is worn requires the disassembly of a large number of parts, which is cumbersome, time-consuming and labor-intensive, and the lubrication and maintenance of the internal bearings is also inconvenient.

[0031] Please refer to Figure 1 , Figure 2 and Figure 3 A modular rotary joint for easy replacement of sealing rings includes a housing 1, which serves as the main mounting body and sealing chamber of the entire device. The modular rotary joint also includes a modular mechanism 2, which is detachably slidably installed inside the housing 1. The modular mechanism 2 serves as the core unit for bearing rotating components and enabling quick disassembly. A spring 4 is disposed inside the housing 1. The bottom of the spring 4 is movably connected to a sealing ring 5. The bottom of the sealing ring 5 is movably connected to a sealing device 6. The top of the modular mechanism 2 is pressed against by the sealing device 6.

[0032] Please refer to Figure 5 , Figure 6 and Figure 7The modular mechanism 2 includes a rotating device 201, with a carbonized bearing 7 fixedly connected inside the rotating device 201. The carbonized bearing 7 supports the rotating device 201 in rotating relative to the outer shell 1. An outlet 8 is connected to and fixedly attached to the bottom of the rotating device 201, and the outlet 8 is integrally fixedly connected to the bottom of the rotating device 201. The outlet 8 rotates synchronously with the rotating device 201. A locking ring 207 is slidably connected to the outer periphery of the bottom of the rotating device 201. A movement groove 208 is formed inside the locking ring 207. A rubber block 204 is fixedly connected to the part, and a locking tongue 202 is fixedly connected to the end of the rubber block 204 away from the outlet 8. The locking tongue 202 can extend radially out of the locking ring 207 to engage with the inner wall of the outer shell 1. A limiting block 203 is fixedly connected to the outer wall of the locking tongue 202. The limiting block 203 is used to provide guidance and reinforcement when the locking tongue 202 moves in the movement groove 208. A locking groove 205 is provided at the bottom of the locking tongue 202. The locking groove 205 is adapted to allow the disassembly key 206 to slide into it to push the locking tongue 202 to squeeze the rubber block 204 to unlock.

[0033] In a preferred embodiment, to facilitate external maintenance of the internal carbonized bearing 7, the modular mechanism 2 further includes a maintenance mechanism 3. The maintenance mechanism 3 is disposed on the rotating device 201. The maintenance mechanism 3 includes a mounting groove 304 formed on the outer wall of the rotating device 201. An oil inlet 301 is fixedly connected to the inner wall of the mounting groove 304. The oil inlet 301 is used to inject lubricating oil into the carbonized bearing 7 from the outside of the housing 1.

[0034] As another preferred embodiment, to ensure that the lubricating oil can evenly cover all parts of the carbonized bearing 7 to extend its service life and to solve the problem of complex operation during maintenance of the existing device, please refer to... Figure 4 , Figure 5 and Figure 6 The maintenance mechanism 3 also includes an annular lubrication groove 302 opened inside the rotating device 201. The annular lubrication groove 302 is connected to the oil injection port 301 and surrounds the circumference of the carbonized bearing 7. The maintenance mechanism 3 also includes a trapezoidal groove 303 opened on the inner wall of the rotating device 201. The trapezoidal groove 303 is connected to the oil injection port 301 and is used to guide lubricating oil to the upper and lower end faces of the carbonized bearing 7. The oil injection port 301 is connected to the annular lubrication groove 302 and the trapezoidal groove 303 respectively via the mounting groove 304. The annular lubrication groove 302 and the trapezoidal groove 303 together form a lubrication oil passage surrounding the carbonized bearing 7.

[0035] Working principle: When the sealing device 6 or sealing ring 5 is worn and needs to be replaced, insert the disassembly key 206 into the lock groove 205 and push the disassembly key 206 towards the outlet 8. The disassembly key 206 slides in the movement groove 208 and pushes the lock tongue 202 to squeeze the rubber block 204. The lock tongue 202 retracts radially and separates from the inner wall of the outer shell 1. At this time, the entire modular mechanism 2 can be detached from the outer shell 1. The operator can easily replace the sealing device 6 and sealing ring 5 exposed inside the outer shell 1 due to the removal of the modular mechanism 2. After the replacement is completed, push the modular mechanism 2 back into the outer shell 1. The elastic restoring force of the rubber block 204 pushes the lock tongue 202 to automatically lock into the inner wall of the outer shell 1.

[0036] When the carbonized bearing 7 requires maintenance, lubricating oil is injected through the oil inlet 301. After entering the mounting groove 304, the lubricating oil flows into the annular lubrication groove 302 and the trapezoidal groove 303 respectively. The annular lubrication groove 302 guides the lubricating oil to the circumference of the carbonized bearing 7, and the trapezoidal groove 303 guides the lubricating oil to the upper and lower end faces of the carbonized bearing 7, thus achieving comprehensive lubrication of the carbonized bearing 7. Through the quick unlocking mechanism composed of the locking tongue 202, the rubber block 204 and the disassembly key 206, and the maintenance mechanism 3 composed of the oil inlet 301, the annular lubrication groove 302 and the trapezoidal groove 303, this utility model solves the problems of cumbersome replacement of seals and inconvenient bearing maintenance in the prior art.

Claims

1. A modular rotary joint for easy replacement of sealing rings, comprising: Outer shell (1); Spring (4), said spring (4) is disposed inside the outer casing (1); A sealing ring (5) is movably connected to the bottom of the spring (4); A sealing device (6) is movably connected to the bottom of the sealing ring (5); Modular mechanism (2), which is detachably slidably installed inside the outer shell (1), with the top of the modular mechanism (2) pressed against by the sealing device (6); Its features are, The modular mechanism (2) includes a rotating device (201), with a carbonized bearing (7) fixedly connected inside the rotating device (201). The carbonized bearing (7) supports the rotating device (201) to rotate relative to the outer shell (1). The bottom of the rotating device (201) is connected to and fixed with an outlet (8). A locking ring (207) is slidably connected to the outer periphery of the bottom of the rotating device (201). A motion groove (208) is provided inside the locking ring (207). A rubber block (204) is fixedly connected inside (208). A locking tongue (202) is fixedly connected to the end of the rubber block (204) away from the outlet (8). The locking tongue (202) can extend radially out of the locking ring (207) to engage with the inner wall of the outer shell (1). A locking groove (205) is provided at the bottom of the locking tongue (202). The locking groove (205) is adapted to be slidably inserted by the disassembly key (206) to push the locking tongue (202) to squeeze the rubber block (204) to unlock.

2. The modular rotary joint for easy replacement of the sealing ring according to claim 1, characterized in that, The outer wall of the latch (202) is fixedly connected to a limiting block (203), which is used to provide guidance and reinforcement when the latch (202) moves in the motion groove (208).

3. A modular rotary joint for easy replacement of the sealing ring according to claim 1, characterized in that, The modular mechanism (2) also includes a maintenance mechanism (3), which is disposed on the rotating device (201) and includes a mounting groove (304) formed on the outer wall of the rotating device (201).

4. A modular rotary joint for easy replacement of the sealing ring according to claim 3, characterized in that, The inner wall of the mounting groove (304) is fixedly connected to an oil inlet (301), which is used to inject lubricating oil into the carbonized bearing (7) from the outside of the housing (1).

5. A modular rotary joint for easy replacement of the sealing ring according to claim 4, characterized in that, The maintenance mechanism (3) also includes an annular lubrication groove (302) opened inside the rotating device (201), the annular lubrication groove (302) is connected to the oil inlet (301) and surrounds the circumference of the carbonized bearing (7).

6. A modular rotary joint for easy replacement of the sealing ring according to claim 5, characterized in that, The maintenance mechanism (3) also includes a trapezoidal groove (303) formed on the inner wall of the rotating device (201), the trapezoidal groove (303) being connected to the oil inlet (301) and used to guide lubricating oil to the upper and lower end faces of the carbonized bearing (7).

7. A modular rotary joint for easy replacement of the sealing ring according to claim 6, characterized in that, The oil inlet (301) is connected to the annular lubrication groove (302) and the trapezoidal groove (303) via the mounting groove (304). The annular lubrication groove (302) and the trapezoidal groove (303) together form a lubrication oil passage surrounding the carbonized bearing (7).

8. A modular rotary joint for easy replacement of the sealing ring according to claim 1, characterized in that, The outlet (8) is integrally fixedly connected to the bottom of the rotating device (201), and the outlet (8) rotates synchronously with the rotating device (201).

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