High-temperature-resistant universal joint

Abstract

The high-temperature-resistant universal joint comprises a first connector, the outer wall of the first connector is sleeved with a sealing steering assembly, the sealing steering assembly communicates with a second connector, and an elastic sealing ring is embedded in the sealing steering assembly; an adjusting and fixing device and an auxiliary sealing assembly are arranged in the sealing steering assembly. According to the high-temperature-resistant universal joint, through the use of an adjusting fixing device and an auxiliary sealing assembly, when a user needs to rotate the angle of a second connector, the user can press a pressing rod to drive a fixing block to descend and drive a pressing rod to move in the direction of the pressing rod, so that an L-shaped rod drives a pressing block to be away from a first connector, and the pressing rod drives a piston plate to move; the elastic sealing ring is arranged in the air cavity, so that air in the elastic sealing ring can enter the air cavity, the elastic sealing ring is not tightly attached to the sealing groove any more, abrasion of the elastic sealing ring can be reduced when the second connector rotates by an angle, and the sealing effect of the follow-up elastic sealing ring is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of universal joints, and particularly to a high-temperature resistant universal joint. Background Art

[0002] Universal joints are mainly used for angle compensation at the joints of metal pipes, facilitating the connection of rigid pipes, eliminating the connection stress on the pipeline caused by non-parallel connection surfaces, and being beneficial to improving the sealing performance at the pipe joints. Especially when two groups of pipes are not parallel and the pipe openings of the two groups of pipes are not in the same plane, a universal joint is required for connection.

[0003] Currently, in the prior art, a Chinese patent with the publication number CN216520163U discloses a high-temperature resistant universal rotary joint. By arranging an inner sleeve, a sealing gasket, a spring gasket and a sealing spring, during the use of the device, the sealing gasket, the spring gasket and the sealing spring are sequentially installed inside the inner sleeve, and then the inner sleeve is fixedly connected to the inside of the joint socket, so that the bottom end of the joint shaft presses the sealing gasket during the installation process to ensure the connection sealing performance between the joint shaft and the joint socket, thus solving the problem of poor connection sealing performance of the existing device during use. However, during actual use of the device, since the connected pipes are not connected, the two joints of the universal joint need to be turned and adjusted. During the rotation process, the sealing gasket among them will be worn, reducing the sealing effect of the subsequent sealing gasket. In view of this, we propose a high-temperature resistant universal joint. Summary of the Invention

[0004] The main purpose of the present invention is to provide a high-temperature resistant universal joint that can solve the problems raised in the above background art.

[0005] To achieve the above object, the high-temperature resistant universal joint proposed by the present invention includes a first connecting head. A sealing and steering assembly is sleeved on the outer wall of the first connecting head. The sealing and steering assembly is communicated with a second connecting head. An elastic sealing ring is inlaid and installed inside the sealing and steering assembly. An adjusting and fixing device and an auxiliary sealing assembly are arranged in the sealing and steering assembly. The adjusting and fixing device includes: A pressing rod that penetrates through and is fixedly connected to a fixing ring. A connecting spring is fixedly connected to the upper side of the fixing ring. By using the connecting spring, when the pressing rod is pressed to drive the connecting spring to stretch, when the pressing rod is released, under the reset action of the connecting spring, the pressing rod can be driven to reset; A fixing block fixedly connected to the bottom of the pressing rod. A hinged rod is hinged to one side of the fixing block close to the auxiliary sealing assembly. By the downward movement of the pressing rod, the fixing block can be driven to descend, thereby driving the hinged rod to move; and a compression rod, the compression rod is hinged to the end of the articulated rod away from the fixed block, an L-shaped rod is fixedly connected to the outer wall of the compression rod, and a pressing block is fixedly connected to the end of the L-shaped rod away from the compression rod. By moving the articulated rod, the compression rod can be driven to move, and then the L-shaped rod can drive the pressing block to move. When the pressing block moves away from the connector one, the connector two can rotate. When the pressing block approaches the connector one, there is a large frictional force between the connector two and the pressing block, making the connector two in a relatively stable state during use.

[0006] Preferably, the sealing and steering assembly includes a first collar and a second collar. The first collar and the second collar are fixedly connected by bolts. The connector two passes through the first collar and is fixedly connected to the first collar. By using bolts, the first collar and the second collar can be disassembled, which is convenient for replacing the elastic sealing ring that has been used for a period of time later, ensuring the use effect of the device subsequently.

[0007] Preferably, inner grooves are formed in both the first collar and the second collar, and the end of the connecting spring away from the fixed ring is fixedly connected to the inner groove.

[0008] Preferably, through grooves are formed on the sides of the first collar and the second collar close to the connector one, and the size of the through groove is adapted to the pressing block. The pressing block is located above the auxiliary sealing assembly.

[0009] Preferably, two sets of adjusting and fixing devices are provided in both the first collar and the second collar, and the two sets of adjusting and fixing devices are symmetrically arranged with the center lines of the first collar and the second collar as the symmetry axes.

[0010] Preferably, the auxiliary sealing assembly includes an air chamber. An air cavity is provided in the air chamber. A piston plate is piston-connected in the air chamber. The air cavity is arranged on the side of the piston plate close to the elastic sealing ring. A return spring is fixedly connected to the side of the piston plate away from the air cavity, and the end of the return spring away from the piston plate is fixedly connected to the inner wall of the air chamber. By moving the compression rod, the piston plate can be driven to move. When the piston plate moves in the direction away from the elastic sealing ring, the gas in the elastic sealing ring can enter the air cavity of the air chamber. When the piston plate moves in the direction close to the elastic sealing ring, the gas in the air cavity enters the elastic sealing ring, improving the sealing effect of the elastic sealing ring.

[0011] Preferably, a compression rod is fixedly connected to the side of the piston plate away from the air cavity. The compression rod passes through the air chamber and is slidably connected to the air chamber. An interface is provided on the side of the air chamber close to the elastic sealing ring.

[0012] Preferably, the elastic sealing ring is hollow, and a through pipe is fixedly connected to the side of the elastic sealing ring close to the air chamber. The outer diameter of the through pipe matches the inner diameter of the docking port. By using the through pipe and the docking port, the gas in the air cavity can enter the elastic sealing ring, and at the same time, the gas in the elastic sealing ring can enter the air cavity.

[0013] Preferably, a plurality of communication ports are formed on the outer wall of the first connector, and the plurality of communication ports are arranged in an annular array on the outer wall of the first connector. A sealing groove is formed on the outer wall of the first connector.

[0014] Preferably, there are two sets of the sealing grooves, and the elastic sealing ring is embedded in the sealing grooves. By embedding the elastic sealing ring in the sealing grooves, the sealing performance of the connection between the first connector and the sealing steering assembly can be improved, and the use effect of the device can be enhanced. Beneficial effects

[0015] The present invention provides a high-temperature resistant universal joint, which has the following beneficial effects: (1). When the user needs to adjust the angle of the second connector, by using the adjusting and fixing device and the auxiliary sealing assembly of the high-temperature resistant universal joint, the user can press the push rod to drive the fixing block to descend. At the same time, the fixing ring descends to stretch the connecting spring. Under the action of the hinge rod, the pressing rod moves towards the push rod, so that the L rod drives the pressing block away from the first connector, and the pressing rod drives the piston plate to move, enabling the gas in the elastic sealing ring to enter the air cavity. Thus, the elastic sealing ring no longer closely adheres to the sealing groove, reducing the wear of the elastic sealing ring when the second connector rotates, and improving the subsequent sealing effect of the elastic sealing ring.

[0016] (2). After the user adjusts the position of the second connector, by using the auxiliary sealing assembly of the high-temperature resistant universal joint, when the push rod is released, under the action of the connecting spring and the reset spring, the push rod and the piston plate are reset, and the gas in the air cavity can be squeezed into the elastic sealing ring, causing the elastic sealing ring to expand and closely adhere to the sealing groove, further improving the subsequent sealing effect of the elastic sealing ring.

[0017] (3). By using the sealing steering assembly of the high-temperature resistant universal joint, after the elastic sealing ring is used for a long time, the elastic sealing ring can be removed and replaced by disassembling the first sleeve ring and the second sleeve ring. Moreover, when replacing the elastic sealing ring, by aligning the through pipe with the docking port, the elastic sealing ring can be quickly installed, enabling the device to be continuously used and ensuring the use effect of the device. Description of the drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0019] Figure 1 Schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 Schematic diagram of the structure of the first connector of the present invention; Figure 3 Schematic diagram of the partial three-dimensional structure of the present invention; Figure 4 Schematic diagram of the partial three-dimensional sectional structure of the present invention Figure 1 ; Figure 5 For the present invention Figure 4 Schematic diagram of structure A in the present invention; Figure 6 Schematic diagram of the partial three-dimensional sectional structure of the present invention Figure 2 ; Figure 7 For the present invention Figure 6 Schematic diagram of structure B in the present invention.

[0020] Explanation of the reference numerals in the drawings: 1. First connector; 2. Sealing and steering assembly; 3. Second connector; 4. Elastic sealing ring; 6. Inner groove; 7. Adjusting and fixing device; 8. Auxiliary sealing assembly; 101. Communication port; 102. Sealing groove; 21. First collar; 22. Second collar; 23. Bolt; 41. Through pipe; 71. Pressing rod; 72. Fixed ring; 73. Fixed block; 74. Hinge rod; 75. Pressing bar; 76. L-shaped rod; 77. Pressing block; 81. Air chamber; 82. Air cavity; 83. Piston plate; 84. Docking port.

[0021] The realization of the purpose, functional features and advantages of the present invention will be further described with reference to the embodiments and the drawings. Embodiment

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0023] Please refer to Figures 1-7, the present invention provides a high-temperature resistant universal joint, which includes a first connecting head 1. A plurality of communication ports 101 are opened on the outer wall of the first connecting head 1, and the plurality of communication ports 101 are arranged in a circular array on the outer wall of the first connecting head 1. A sealing groove 102 is opened on the outer wall of the first connecting head 1. A sealing and steering component 2 is sleeved on the outer wall of the first connecting head 1. The sealing and steering component 2 is communicated with a second connecting head 3. By using the communication ports 101, the first connecting head 1 is communicated with the second connecting head 3. Both the first connecting head 1 and the second connecting head 3 are synthesized from high-temperature resistant materials and have good high-temperature resistance effects. By using the second connecting head 3, the position of the second connecting head 3 can be adjusted when the second connecting head 3 rotates. An elastic sealing ring 4 is embedded and installed inside the sealing and steering component 2. There are two groups of sealing grooves 102, and the elastic sealing ring 4 is embedded in the sealing grooves 102. By using the elastic sealing ring 4, the sealing effect of the high-temperature resistant universal joint can be improved. An adjusting and fixing device 7 and an auxiliary sealing component 8 are arranged in the sealing and steering component 2. By using the adjusting and fixing device 7 and the auxiliary sealing component 8, the angle of the second connecting head 3 can be adjusted, and at the same time, the wear of the elastic sealing ring 4 is reduced, and the subsequent sealing effect of the elastic sealing ring 4 is improved.

[0024] In an embodiment of the present invention, in order to be able to fix the second connecting head 3 and at the same time facilitate the angle adjustment of the second connecting head 3, specifically, the adjusting and fixing device 7 includes a pressing rod 71. The pressing rod 71 penetrates through a fixing ring 72 and is fixedly connected to the fixing ring 72. A connecting spring is fixedly connected to the upper side of the fixing ring 72. By using the connecting spring, when the pressing rod 71 is pressed to drive the connecting spring to stretch, when the pressing rod 71 is released, under the reset action of the connecting spring, the pressing rod 71 can be driven to reset. A fixing block 73 is fixedly connected to the bottom of the pressing rod 71. One side of the fixing block 73 close to the auxiliary sealing component 8 is hinged with a hinged rod 74. One end of the hinged rod 74 away from the fixing block 73 is hinged with a pressing rod 75. An L-shaped rod 76 is fixedly connected to the outer wall of the pressing rod 75. One end of the L-shaped rod 76 away from the pressing rod 75 is fixedly connected to a pressing block 77. By pressing the pressing rod 71, the fixing block 73 is driven to descend, and at the same time, the fixing ring 72 descends to stretch the connecting spring. Under the action of the hinged rod 74, the pressing rod 75 is driven to move towards the pressing rod 71, so that the L-shaped rod 76 drives the pressing block 77 to move away from the first connecting head 1, so that the second connecting head 3 is no longer pressed by the pressing block 77, and the limit of the second connecting head 3 is released, thereby achieving the effect of rotating the second connecting head 3. After the rotation adjustment of the second connecting head 3 is completed, by releasing the pressing rod 71, under the reset action of the connecting spring, the fixing block 73 is driven to reset. Under the action of the hinged rod 74, the pressing rod 75 is driven to reset, so that the L-shaped rod 76 drives the pressing block 77 to reset, and the pressing block 77 presses the first connecting head 1. There is a large frictional force between the second connecting head 3 and the pressing block 77, so that the second connecting head 3 is in a relatively stable state during use.

[0025] Furthermore, in order to improve the sealing effect of the elastic sealing ring 4, specifically, the auxiliary sealing assembly 8 includes an air chamber 81. An air cavity 82 is provided in the air chamber 81. A piston in the air chamber 81 is connected to a piston plate 83. The air cavity 82 is arranged on the side of the piston plate 83 close to the elastic sealing ring 4. A return spring is fixedly connected to the side of the piston plate 83 away from the air cavity 82, and the end of the return spring away from the piston plate 83 is fixedly connected to the inner wall of the air chamber 81. A pressure rod 75 is fixedly connected to the side of the piston plate 83 away from the air cavity 82. The pressure rod 75 penetrates through the air chamber 81 and is slidably connected to the air chamber 81. An interface 84 is provided on the side of the air chamber 81 close to the elastic sealing ring 4. The elastic sealing ring 4 is hollow, and a through pipe 41 is fixedly connected to the side of the elastic sealing ring 4 close to the air chamber 81. The outer diameter of the through pipe 41 matches the inner diameter of the interface 84. By moving the pressure rod 75, the piston plate 83 can be driven to move. When the piston plate 83 moves in a direction away from the elastic sealing ring 4, through the use of the through pipe 41 and the interface 84, the gas in the elastic sealing ring 4 can enter the air cavity 82 of the air chamber 81, so that the elastic sealing ring 4 no longer tightly adheres to the sealing groove 102, enabling the second connector 3 to reduce the wear of the elastic sealing ring 4 when rotating at an angle and improving the subsequent sealing effect of the elastic sealing ring 4. After the user adjusts the position of the second connector 3, by releasing the pressing rod 71, under the action of the connecting spring and the return spring, the pressing rod 71 and the piston plate 83 are reset, and the gas in the air cavity 82 can be squeezed into the elastic sealing ring 4, causing the elastic sealing ring 4 to expand and tightly adhere to the sealing groove 102, further improving the subsequent sealing effect of the elastic sealing ring 4.

[0026] In addition, in order to be able to replace the elastic sealing ring 4 after it has been used for a period of time and ensure the continuous use effect of this high-temperature resistant universal joint, specifically, the sealing and steering assembly 2 includes a first collar 21 and a second collar 22. The first collar 21 and the second collar 22 are fixedly connected by bolts 23. The second connector 3 penetrates through the first collar 21 and is fixedly connected to the first collar 21. Inner grooves 6 are provided inside both the first collar 21 and the second collar 22. The end of the connecting spring away from the fixed ring 72 is fixedly connected to the inner groove 6. Through grooves are provided on the sides of the first collar 21 and the second collar 22 close to the first connector 1, and the size of the through grooves matches that of the pressing block 77. The pressing block 77 is located above the auxiliary sealing assembly 8. Two sets of adjusting and fixing devices 7 are provided in both the first collar 21 and the second collar 22, and the two sets of adjusting and fixing devices 7 are symmetrically arranged with the center line of the first collar 21 and the second collar 22 as the axis of symmetry. After the elastic sealing ring 4 has been used for a long time, the first collar 21 and the second collar 22 can be disassembled so that the elastic sealing ring 4 can be removed and replaced. Moreover, when replacing the elastic sealing ring 4, by aligning the through pipe 41 with the interface 84, the elastic sealing ring 4 can be quickly installed, enabling the device to be used continuously and ensuring the use effect of the device.

[0027] During use, by pressing the pressing rod 71, the fixed block 73 is driven to descend. At the same time, the fixed ring 72 descends to stretch the connecting spring. Under the action of the hinge rod 74, the pressing rod 75 is driven to move in the direction of the pressing rod 71, so that the L-shaped rod 76 drives the pressing block 77 away from the first connector 1, making the second connector 3 no longer pressed by the pressing block 77, thus releasing the limit of the second connector 3, and then enabling the second connector 3 to rotate and adjust. During this process, by the movement of the pressing rod 75, the piston plate 83 can be driven to move. When the piston plate 83 moves away from the elastic sealing ring 4, through the use of the through pipe 41 and the butting port 84, the gas in the elastic sealing ring 4 can enter the air cavity 82 of the air chamber 81, so that the elastic sealing ring 4 no longer closely adheres to the sealing groove 102, reducing the wear of the elastic sealing ring 4 when the second connector 3 rotates at an angle; At the same time, when the pressing rod 71 is released, under the reset action of the connecting spring, the fixed block 73 is driven to reset. Under the action of the hinge rod 74, the pressing rod 75 is driven to reset, so that the L-shaped rod 76 drives the pressing block 77 to reset, making the pressing block 77 press the first connector 1. There is a large frictional force between the second connector 3 and the pressing block 77, so that the second connector 3 is more stable during use. After the pressing rod 71 is released, under the action of the connecting spring and the reset spring, the pressing rod 71 and the piston plate 83 reset, and the gas in the air cavity 82 can be squeezed into the elastic sealing ring 4, causing the elastic sealing ring 4 to expand and closely adhere to the sealing groove 102.

[0028] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the description and drawings of the present invention under the inventive concept of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A high-temperature resistant universal joint, including a first connector (1), Characterized in that: A sealing and steering component (2) is sleeved on the outer wall of the first connector (1), the sealing and steering component (2) is communicated with a second connector (3), an elastic sealing ring (4) is inlaid and installed inside the sealing and steering component (2), and an adjusting and fixing device (7) and an auxiliary sealing component (8) are arranged in the sealing and steering component (2). The adjusting and fixing device (7) includes: A pressing rod (71), the pressing rod (71) penetrates through a fixing ring (72) and is fixedly connected with the fixing ring (72), and a connecting spring is fixedly connected to the upper side of the fixing ring (72); A fixing block (73), the fixing block (73) is fixedly connected to the bottom of the pressing rod (71), and a hinged rod (74) is hinged to one side of the fixing block (73) close to the auxiliary sealing component (8); And a pressing bar (75), the pressing bar (75) is hinged to the end of the hinged rod (74) far from the fixing block (73), an L-shaped rod (76) is fixedly connected to the outer wall of the pressing bar (75), and a pressing block (77) is fixedly connected to the end of the L-shaped rod (76) far from the pressing bar (75).

2. The high-temperature resistant universal joint according to claim 1, Characterized in that: The sealing and steering component (2) includes a first collar (21) and a second collar (22), the first collar (21) and the second collar (22) are fixedly connected by bolts (23), and the second connector (3) penetrates through the first collar (21) and is fixedly connected with the first collar (21).

3. The high-temperature resistant universal joint according to claim 2, Characterized in that: Inner grooves (6) are respectively opened inside the first collar (21) and the second collar (22), and the end of the connecting spring far from the fixing ring (72) is fixedly connected to the inner groove (6).

4. The high-temperature resistant universal joint according to claim 2, Characterized in that: Through grooves are opened on one side of the first collar (21) and the second collar (22) close to the first connector (1), and the size of the through grooves is adapted to the pressing block (77), and the pressing block (77) is located above the auxiliary sealing component (8).

5. The high-temperature resistant universal joint according to claim 2, Characterized in that: Two groups of adjusting and fixing devices (7) are arranged in both the first collar (21) and the second collar (22), and the two groups of adjusting and fixing devices (7) are symmetrically arranged with the center line of the first collar (21) and the second collar (22) as the axis of symmetry.

6. The high-temperature resistant universal joint according to claim 1, Characterized in that: The auxiliary sealing component (8) includes an air chamber (81), an air cavity (82) is arranged in the air chamber (81), a piston plate (83) is piston-connected in the air chamber (81), the air cavity (82) is arranged on the side of the piston plate (83) close to the elastic sealing ring (4), a return spring is fixedly connected to the side of the piston plate (83) far from the air cavity (82), and the end of the return spring far from the piston plate (83) is fixedly connected to the inner wall of the air chamber (81).

7. The high-temperature resistant universal joint according to claim 6, Characterized in that: On the side of the piston plate (83) away from the air chamber (82), a pressure rod (75) is fixedly connected. The pressure rod (75) penetrates through the air chamber (81) and is slidably connected to the air chamber (81). An interface (84) is provided on the side of the air chamber (81) close to the elastic sealing ring (4).

8. The high-temperature resistant universal joint according to claim 7, characterized in that: The elastic sealing ring (4) is hollow, and a through pipe (41) is fixedly connected to the side of the elastic sealing ring (4) close to the air chamber (81), and the outer diameter of the through pipe (41) matches the inner diameter of the interface (84).

9. The high-temperature resistant universal joint according to claim 1, characterized in that: A plurality of communication ports (101) are provided on the outer wall of the first connector (1), and the plurality of communication ports (101) are arranged in a circular array on the outer wall of the first connector (1). A sealing groove (102) is provided on the outer wall of the first connector (1).

10. The high-temperature resistant universal joint according to claim 9, characterized in that: Two sets of the sealing grooves (102) are provided, and the elastic sealing ring (4) is embedded in the sealing grooves (102).

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