Spherical sealing rotary joint
The ball joint seal rotation connector addresses lubrication challenges by integrating flow-through and L-shaped oil channels for easy lubrication, enhancing seal durability and reducing maintenance needs.
Patent Information
- Application Number
- CN202422552591.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-10-22
AI Technical Summary
The lubricant oil of existing spherical seal rotary joints is inconvenient, which leads to accelerate wear of seals, affects service life and increases maintenance costs.
An inner sealing block with a circulation oil passage and an L-shaped oil passage is designed to inject lubricating oil into the L-shaped oil passage through the oil injection port. The lubricating oil comes into contact with the spherical connecting pipe through the circulation oil passage and the lubricating port to achieve convenient lubrication.
Simplifies the lubricant addition process, extends the service life of the seal, and reduces maintenance costs and equipment downtime.
Smart Images
Figure CN223105577U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of pipeline connection, and particularly relates to a spherical sealing rotary joint. Background Art
[0002] At present, the existing spherical sealing rotary joints face many challenges in practical applications. The most prominent problem is that it is extremely inconvenient to add lubricating oil between the ball joint and the sealing structure. During the operation of the rotary joint, continuous friction will occur between the ball joint and the sealing structure. If the lubrication is insufficient, it will accelerate the wear process of the sealing parts, posing a serious threat to their service life. The shortening of the service life of the sealing parts means that they need to be replaced more frequently, which not only greatly increases the maintenance cost of the equipment, but also leads to an extension of the equipment downtime, thereby having an adverse impact on the production efficiency.
[0003] In view of the problems in the existing spherical sealing rotary joints, such as inconvenient addition of lubricating oil and affecting the service life of the sealing parts, another spherical sealing rotary joint is provided. Summary of the Utility Model
[0004] In view of the problem that the existing spherical sealing rotary joints are not convenient for adding lubricating oil, which affects the service life of the sealing parts, the utility model provides a spherical sealing rotary joint, which is provided with an inner sealing block A with a circulating oil passage and an inner sealing block B with an L-shaped oil passage, and a plurality of lubricating ports are penetrated and opened in both the circulating oil passage and the L-shaped oil passage. Lubricating oil can be injected into the L-shaped oil passage from the oil injection port of the housing B. The lubricating oil flows into the circulating oil passage through the L-shaped oil passage and flows down from the lubricating ports to contact the spherical connecting end of the spherical connecting pipe, realizing the function of convenient lubrication addition, which is easy to extend the service life of the sealing parts and effectively solves the problem that the existing spherical sealing rotary joints are not convenient for adding lubricating oil and affect the service life of the sealing parts. The specific technical solutions are as follows:
[0005] A spherical sealing rotary joint includes a housing A and a housing B. Bolts are installed between the housing A and the housing B. A limiting block is clamped and installed in the housing A. An installation groove is opened on the right surface of the limiting block. An inner sealing block A is clamped and installed in the installation groove. An axial positioning mechanism is clamped and installed between the limiting block and the housing A. An inner sealing block B is clamped and installed in the housing B. A spherical connecting pipe is rotatably installed between the inner sealing block B and the inner sealing block A. The left end of the spherical connecting pipe penetrates through the inner sealing block A, the limiting block, the axial positioning mechanism and the housing A. An oil injection port is penetrated and opened on the upper surface of the housing B. An L-shaped oil passage is arranged in the inner sealing block B, and the L-shaped oil passage is communicated with the oil injection port. A circulating oil passage communicated with the L-shaped oil passage is arranged in the inner sealing block A. A plurality of lubricating ports are penetrated and opened in both the circulating oil passage and the L-shaped oil passage.
[0006] In the above technical solution, a sealing bolt is screwed and installed in the oil filling port, a sealing gasket is fixedly installed on the lower surface of the sealing bolt, and the sealing gasket seals the opening of the L-shaped oil passage.
[0007] In the above technical solution, the axial positioning mechanism includes an axial positioning bearing, a bearing sealing ring A, and a bearing sealing ring B. The axial positioning bearing is fixedly installed in the housing A. The bearing sealing ring A is installed between the axial positioning bearing and the inner cavity of the housing A. The bearing sealing ring B is installed between the axial positioning bearing and the limiting block. The axial positioning bearing is sleeved on the outer surface of the spherical connecting pipe.
[0008] In the above technical solution, a plurality of positioning pins are fixedly installed equidistantly in the circumferential direction in the housing A. A plurality of positioning grooves are opened equidistantly in the circumferential direction on the left surface of the limiting block. The positioning pins are inserted and installed in the corresponding positioning grooves.
[0009] In the above technical solution, the opposite surfaces between the inner sealing block B and the inner sealing block A are in contact, and the inner side surfaces of the inner sealing block B and the inner sealing block A are in contact with the outer surface of the spherical connecting pipe.
[0010] A spherical sealing rotary joint of the present utility model has the following beneficial effects compared with the prior art:
[0011] By providing the inner sealing block A with a circulation oil passage and the inner sealing block B with an L-shaped oil passage, and a plurality of lubricating ports are penetrated and opened in both the circulation oil passage and the L-shaped oil passage, lubricating oil can be injected into the L-shaped oil passage from the oil filling port of the housing B. The lubricating oil flows into the circulation oil passage through the L-shaped oil passage and flows down from the lubricating ports to contact the spherical transfer end of the spherical connecting pipe, realizing the function of convenient lubrication addition and being easy to extend the service life of the sealing member. Description of the Drawings
[0012] Figure 1 It is a schematic diagram of the overall structure of the present utility model.
[0013] Figure 2 It is a schematic sectional structure diagram of the present utility model.
[0014] Figure 3 It is an exploded structure diagram of the present utility model.
[0015] Figure 4 It is a schematic right view structure diagram of the housing A of the present utility model.
[0016] Figure 5 It is a schematic left view structure diagram of the limiting block of the present utility model.
[0017] Figure 6 It is a schematic structure diagram of the combination of the limiting block and the inner sealing block A of the present utility model.
[0018] Figures 1-6 Among them: 1. Housing A; 11. Limit block; 111. Installation groove; 112. Positioning groove; 12. Inner seal block A; 13. Axial positioning mechanism; 131. Axial positioning bearing; 132. Bearing seal ring A; 133. Bearing seal ring B; 14. Positioning pin; 2. Housing B; 21. Oil filling port; 22. Sealing bolt; 221. Sealing gasket; 3. Inner seal block B; 31. L-shaped oil passage; 4. Spherical connecting pipe; 5. Circulation oil passage; 51. Lubrication port. Specific embodiments
[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0020] The front, rear, left, right, up and down in this embodiment are described with Figure 1 as the reference plane. Please refer to Figures 1-6 , the present invention provides a technical solution:
[0021] A spherical sealing rotary joint includes a housing A1 and a housing B2. A bolt is installed between the housing A1 and the housing B2. A limit block 11 is clamped and installed in the housing A1. An installation groove 111 is opened on the right surface of the limit block 11. An inner seal block A12 is clamped and installed in the installation groove 111. An axial positioning mechanism 13 is clamped and installed between the limit block 11 and the housing A1. An inner seal block B3 is clamped and installed in the housing B2. A spherical connecting pipe 4 is rotatably installed between the inner seal block B3 and the inner seal block A12. The left end of the spherical connecting pipe 4 penetrates through the inner seal block A12, the limit block 11, the axial positioning mechanism 13 and the housing A1. An oil filling port 21 is penetrated and opened on the upper surface of the housing B2. An L-shaped oil passage 31 is provided in the inner seal block B3. The L-shaped oil passage 31 is communicated with the oil filling port 21. A circulation oil passage 5 communicated with the L-shaped oil passage 31 is provided in the inner seal block A12. A plurality of lubrication ports 51 are penetrated and opened in both the circulation oil passage 5 and the L-shaped oil passage 31;
[0022] Combined with Figure 2As shown, when adding lubricating oil, a syringe or other hole-type injection tool can be used to inject lubricating oil into the L-shaped oil passage 31 through the oil injection port 21. The lubricating oil flows into the circulation oil passage 5 via the L-shaped oil passage 31 and into the lubricating port 51 to contact the right end of the spherical connecting pipe 4. As the spherical connecting pipe 4 rotates, the lubricating oil is evenly smeared on the outer surface of the hinge joint of the spherical connecting pipe 4, playing the role of adding lubricant between the inner sealing block B3 and the inner sealing block A12. The whole adding process is simple and convenient, and it is easier to extend the service life of the inner sealing block B3 and the inner sealing block A12.
[0023] When restricting, to prevent dust from entering the oil injection port 21 and affecting the use effect, as Figure 2 shown, a sealing bolt 22 is screwed and installed in the oil injection port 21. A sealing gasket 221 is fixedly installed on the lower surface of the sealing bolt 22. The sealing gasket 221 seals the opening of the L-shaped oil passage 31. The oil injection port 21 can be sealed by the sealing bolt 22. When adding lubricating oil, it can be unscrewed.
[0024] Combined with Figure 3 and Figure 2 shown, the axial positioning mechanism 13 includes an axial positioning bearing 131, a bearing sealing ring A132, and a bearing sealing ring B133. The axial positioning bearing 131 is fixedly installed in the housing A1. The bearing sealing ring A132 is installed between the axial positioning bearing 131 and the inner cavity of the housing A1. The bearing sealing ring B133 is installed between the axial positioning bearing 131 and the limiting block 11. The axial positioning bearing 131 is sleeved on the outer surface of the spherical connecting pipe 4;
[0025] An axial positioning mechanism 13 is arranged in the spherical sealing adapter to enable the spherical connecting pipe 4 to rotate horizontally, avoiding friction on the seal caused by offset rotation. This design can effectively improve the stability and service life of the spherical sealing adapter and reduce the wear of the seal caused by offset rotation.
[0026] To ensure the stability of the limiting block 11, combined with Figure 4 and Figure 5 shown, a plurality of positioning pins 14 are fixedly installed circumferentially and equidistantly in the housing A1. A plurality of positioning grooves 112 are circumferentially and equidistantly formed on the left surface of the limiting block 11. The positioning pins 14 are inserted and installed in the corresponding positioning grooves 112. The limiting block 11 can be restricted by the positioning pins 14 to ensure the overall stability of the adapter.
[0027] Finally, to ensure the sealing effect inside the adapter, during installation, the opposite surfaces between the inner sealing block B3 and the inner sealing block A12 need to be fitted, and the inner side surfaces of the inner sealing block B3 and the inner sealing block A12 need to be fitted with the outer surface of the spherical connecting pipe 4.
Claims
1. A spherical sealing rotary joint, comprising a housing A (1) and a housing B (2), bolts are installed between the housing A (1) and the housing B (2), characterized in that, A limiting block (11) is snap-fitted and installed inside the housing A (1). An installation groove (111) is formed on the right surface of the limiting block (11). An inner seal block A (12) is snap-fitted and installed in the installation groove (111). An axial positioning mechanism (13) is clamped and installed between the limiting block (11) and the housing A (1). An inner seal block B (3) is snap-fitted and installed inside the housing B (2). A spherical connecting pipe (4) is rotatably installed between the inner seal block B (3) and the inner seal block A (12). The left end of the spherical connecting pipe (4) penetrates through the inner seal block A (12), the limiting block (11), the axial positioning mechanism (13), and the housing A (1). An oil injection port (21) is formed through the upper surface of the housing B (2). An L-shaped oil passage (31) is arranged inside the inner seal block B (3). The L-shaped oil passage (31) is communicated with the oil injection port (21). A circulation oil passage (5) communicated with the L-shaped oil passage (31) is arranged inside the inner seal block A (12). A plurality of lubrication ports (51) are formed through both the circulation oil passage (5) and the L-shaped oil passage (31).
2. The spherical sealing rotary joint according to claim 1, wherein A sealing bolt (22) is screwed and installed in the oil injection port (21). A sealing gasket (221) is fixedly installed on the lower surface of the sealing bolt (22). The sealing gasket (221) seals the opening of the L-shaped oil passage (31).
3. The spherical seal rotary joint according to claim 1, characterized in that, The axial positioning mechanism (13) includes an axial positioning bearing (131), a bearing seal ring A (132), and a bearing seal ring B (133). The axial positioning bearing (131) is fixedly installed inside the housing A (1). The bearing seal ring A (132) is installed between the axial positioning bearing (131) and the inner cavity of the housing A (1). The bearing seal ring B (133) is installed between the axial positioning bearing (131) and the limiting block (11). The axial positioning bearing (131) is sleeved on the outer surface of the spherical connecting pipe (4).
4. A spherical seal rotary joint according to claim 1, characterized in that, A plurality of positioning pins (14) are fixedly installed at equal circumferential intervals inside the housing A (1). A plurality of positioning grooves (112) are formed at equal circumferential intervals on the left surface of the limiting block (11). The positioning pins (14) are inserted and installed in the corresponding positioning grooves (112).
5. The spherical sealing rotary joint according to claim 2, characterized in that, The opposite surfaces between the inner seal block B (3) and the inner seal block A (12) are in contact. The inner side surfaces of the inner seal block B (3) and the inner seal block A (12) are in contact with the outer surface of the spherical connecting pipe (4).