Hydraulic pipe metal joint with double-layer sealing structure

Abstract

The invention provides a hydraulic pipe metal joint with a double-layer sealing structure, and belongs to the technical field of hydraulic pipe metal joints, the hydraulic pipe metal joint comprises a main joint jacket, and the outer wall of the main joint jacket is fixedly connected with an auxiliary joint jacket. According to the oil pipe connector, the special flowing space is formed between the partition plate and the auxiliary connector outer sleeve, and when leaking, an oil pipe can flow in the space formed by the main connector outer sleeve, the auxiliary connector outer sleeve and the outer portion of the inner oil pipe and flow into the special flowing space where the partition plate and the auxiliary connector outer sleeve are located; hydraulic oil flows into the corresponding telescopic pipes through the oil guide grooves, then the telescopic pipes are pushed to extend, the vertical plates are pushed to drive the sliding plates and the clamping plates to move, namely the clamping plates are pushed to extrude the sealing grooves of the inner oil pipe, the larger the leakage pressure is, the higher the clamping force of the clamping plates is, and therefore the outer oil pipe and the inner oil pipe are effectively prevented from falling off, and risks caused by falling off are effectively reduced; the service life of equipment is prolonged, and a good protection function is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic pipe metal joints, and in particular to a hydraulic pipe metal joint with a double-layer sealing structure. Background Art

[0002] Hydraulic pipe metal joints are important components that connect hydraulic pipes to other components of the hydraulic system. They are responsible for safely and efficiently transmitting hydraulic oil in a high-pressure environment. They are usually made of high-strength metal materials (such as alloy steel or stainless steel) to withstand the high pressure and corrosive fluids in the hydraulic system while ensuring good sealing. In recent years, with the continuous development of hydraulic technology and the expansion of application fields, the design and manufacturing technology of hydraulic joints have also been continuously improved. These technological advances have greatly enhanced the self-locking and sealing capabilities of the joints, reducing the risk of leakage and falling off caused by improper connection.

[0003] However, in actual applications, some joints may still have insufficient self-locking ability and may easily fall off when leaking, affecting the safety and stability of the system.

[0004] Therefore, a hydraulic pipe metal joint with a double-layer sealing structure is urgently needed to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a hydraulic pipe metal joint with a double-layer sealing structure to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions: A hydraulic pipe metal joint with a double-layer sealing structure, comprising a main joint outer sleeve, an outer wall of the main joint outer sleeve is fixedly connected to a secondary joint outer sleeve, an end of the main joint outer sleeve away from the secondary joint outer sleeve is fixedly connected to an outer oil pipe, and an end of the secondary joint outer sleeve away from the main joint outer sleeve is fixedly connected to an inner oil pipe, and further comprising: Connecting sealing ring A, fixedly connected to the outer wall of the auxiliary joint jacket; A clamping and locking assembly, the clamping and locking assembly comprising a fixed plate fixedly connected to the inner wall of the secondary joint sleeve, the inner wall of the fixed plate fixedly connected to a fixed tube, and the fixed tube is fixedly connected to the partition, the inner wall of the fixed plate is slidably connected to sliders evenly distributed, the outer wall of the slider is fixedly connected to a slide plate, the outer wall of the slide plate is fixedly connected to a vertical plate, the outer wall of the slide plate is fixedly connected to a clamping plate, and the end of the clamping plate away from the vertical plate is fixedly connected to a clamping sealing gasket; The oil guide grooves are evenly arranged on the inner wall of the auxiliary joint jacket; A rotation groove is provided on the inner wall of the main joint jacket; A driven component is arranged on the inner wall of the rotating groove; The anti-falling component is arranged on the outer wall of the vertical plate.

[0007] As a preferred technical solution of the present application, the driven assembly includes a rotating block rotatably connected to the inner wall of the rotating groove, the rotating block is fixedly connected to a driving disk at one end away from the rotating groove, and the driving disk is rotatably connected to a fixed tube, the outer wall of the driving disk is provided with evenly distributed guide grooves, the inner wall of the guide groove is provided with a guide rod, and the outer wall of the guide rod is abutted against the inner wall of the guide groove, and the guide rod is connected to the oil guide groove.

[0008] As a preferred technical solution of the present application, the anti-falling assembly includes a telescopic tube fixedly connected to the outer wall of the vertical plate, the outer wall of the telescopic tube is sleeved with a strong spring, and the strong spring is fixedly connected to the vertical plate.

[0009] As a preferred technical solution of the present application, the outer wall of the guide rod is fixedly connected to a limiting plate, and the guide rod is fixedly connected to a sliding block.

[0010] As a preferred technical solution of the present application, an embedded sealing gasket is fixedly connected to the inner wall of the fixed tube, and a sliding groove is provided on the embedded sealing gasket and the outer wall of the fixed tube, and the sliding groove is slidably connected to the slide plate.

[0011] As a preferred technical solution of the present application, one end of the strong spring away from the vertical plate is fixedly connected to the auxiliary joint sleeve.

[0012] As a preferred technical solution of the present application, a partition is fixedly connected inside the secondary joint housing.

[0013] As a preferred technical solution of the present application, the outer wall of the inner oil pipe is provided with evenly distributed sealing grooves, the inner wall of the sealing groove is fixedly connected with an inclined plate, and the inclined plate, the inner wall of the sealing groove and the outer wall of the clamping sealing gasket are abutted against each other.

[0014] As a preferred technical solution of the present application, a connecting sealing ring B is fixedly connected to the inner wall of the main joint sleeve, and the outer wall of the connecting sealing ring B abuts against the outer wall of the inner oil pipe.

[0015] As a preferred technical solution of the present application, a pressure sealing gasket is fixedly connected to the outer wall of the inner oil pipe, and the outer wall of the pressure sealing gasket abuts against the outer wall of the connecting sealing ring A.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In the scheme of this application: 1. Due to the nested relationship between the sealing groove and the clamping plate, it is difficult to push the inner oil pipe horizontally. Therefore, the connection relationship between the sealing groove and the clamping plate can be used for protection. In addition, the movement mode of the clamping plate in the fixed direction is converted into a rotational movement mode through the guide rod. There is a certain friction between the rotating block and the main joint jacket. During the friction process between the rotating block and the main joint jacket, the surface of the material will be worn and tiny wear particles will be generated. These particles will accumulate on the friction interface, increasing the friction. The longer the use time, the stronger the friction, and thus the stronger it is. Therefore, there is a certain buffer time for the movement of the clamping plate, which is convenient for maintenance, thereby doubly protecting the hydraulic system, preventing equipment damage caused by excessive pressure, extending the service life of the equipment, and having a stronger pressure-bearing capacity; 2. A special flow space is formed between the provided partition and the auxiliary joint sleeve. When the oil pipe leaks, it will flow in the space formed by the main joint sleeve, the auxiliary joint sleeve and the outside of the inner oil pipe, and flow into the special flow space where the partition and the auxiliary joint sleeve are located. The hydraulic oil flows into the corresponding telescopic tube through the oil guide groove, and then pushes the telescopic tube to extend and pushes the vertical plate to drive the slide plate and the clamping plate to move, that is, pushes the clamping plate to squeeze the sealing groove of the inner oil pipe. The greater the leakage pressure, the stronger the clamping force of the clamping plate, thereby effectively preventing the outer oil pipe and the inner oil pipe from falling off, effectively reducing the risk of falling off, extending the service life of the equipment, and having a good protection function. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the overall structure of a hydraulic pipe metal joint with a double-layer sealing structure provided in this application; Figure 2 One of the cross-sectional views of the hydraulic pipe metal joint with a double-layer sealing structure provided in the present application; Figure 3 The second cross-sectional view of the hydraulic pipe metal joint with a double-layer sealing structure provided in the present application; Figure 4 A schematic diagram of the structure of the secondary joint jacket portion of the hydraulic pipe metal joint with a double-layer sealing structure provided in this application; Figure 5 A schematic diagram of the main joint jacket structure of a hydraulic pipe metal joint with a double-layer sealing structure provided in this application; Figure 6 A schematic diagram of the structure of the fixed disk portion of the hydraulic pipe metal joint with a double-layer sealing structure provided in this application; Figure 7 A schematic diagram of the structure of the driving disc portion of the hydraulic pipe metal joint with a double-layer sealing structure provided in this application; Figure 8 A schematic diagram of the structure of the partition plate portion of the hydraulic pipe metal joint with a double-layer sealing structure provided in this application; Fig. 9 A schematic diagram of the structure of the connection seal ring A of the hydraulic pipe metal joint with a double-layer sealing structure provided in this application; Fig.10 A schematic diagram of the sealing groove structure of a hydraulic pipe metal joint with a double-layer sealing structure provided in this application.

[0018] Indicated in the figure: 1. Main joint outer sleeve; 2. External oil pipe; 3. Auxiliary joint outer sleeve; 4. Internal oil pipe; 5. Rotating block; 6. Driving plate; 7. Fixed plate; 8. Partition plate; 9. Oil guide groove; 10. Telescopic tube; 11. Strong spring; 12. Fixed tube; 13. Connecting seal ring A; 14. Pressing seal gasket; 15. Connecting seal ring B; 16. Rotating groove; 17. Sliding block; 18. Sliding plate; 19. Vertical plate; 20. Clamping plate; 21. Clamping seal gasket; 22. Guide groove; 23. Limiting plate; 24. Guide rod; 25. Embedded seal gasket; 26. Sliding groove; 27. Sealing groove; 28. Inclined plate. DETAILED DESCRIPTION

[0019] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0020] like Figure 1-10 As shown, a hydraulic pipe metal joint with a double-layer sealing structure proposed in this embodiment includes a main joint outer shell 1, an outer wall of the main joint outer shell 1 is fixedly connected to a secondary joint outer shell 3, an end of the main joint outer shell 1 away from the secondary joint outer shell 3 is fixedly connected to an outer oil pipe 2, and an end of the secondary joint outer shell 3 away from the main joint outer shell 1 is fixedly connected to an inner oil pipe 4, and also includes: Connecting sealing ring A13, fixedly connected to the outer wall of the secondary joint jacket 3; The clamping and locking assembly includes a fixed plate 7 fixedly connected to the inner wall of the auxiliary joint sleeve 3, the inner wall of the fixed plate 7 is fixedly connected to a fixed tube 12, and the fixed tube 12 is fixedly connected to the partition 8, the inner wall of the fixed plate 7 is slidably connected to uniformly distributed sliders 17, the outer wall of the slider 17 is fixedly connected to a slide plate 18, the outer wall of the slide plate 18 is fixedly connected to a vertical plate 19, the outer wall of the slide plate 18 is fixedly connected to a clamping plate 20, and the end of the clamping plate 20 away from the vertical plate 19 is fixedly connected to a clamping sealing gasket 21, the slide plate 18 slides in the fixed plate 7 through the slider 17, and then drives the clamping plate 20 to clamp and fix the sealing groove 27 on the inner oil pipe 4; The oil guide grooves 9 are evenly arranged on the inner wall of the auxiliary joint jacket 3; A rotation groove 16 is provided on the inner wall of the main joint outer sleeve 1; A driven component, disposed on the inner wall of the rotating groove 16; The anti-falling component is arranged on the outer wall of the vertical plate 19.

[0021] like Figure 2 , Figure 3 and Figure 7 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the driven component includes a rotating block 5 rotatably connected to the inner wall of the rotating groove 16, and the end of the rotating block 5 away from the rotating groove 16 is fixedly connected to the driving disk 6, and the driving disk 6 is rotatably connected to the fixed tube 12, and the outer wall of the driving disk 6 is provided with evenly distributed guide grooves 22, and the inner wall of the guide groove 22 is provided with a guide rod 24, and the outer wall of the guide rod 24 is against the inner wall of the guide groove 22, and the guide rod 24 is connected to the oil guide groove 9. There is a certain friction when the rotating block 5 rotates with the main joint sleeve 1. During the friction process between the rotating block 5 and the main joint sleeve 1, the surface of the material will wear and produce tiny wear particles. These particles will accumulate on the friction interface to increase the friction. The longer the use time, the stronger the friction, and thus the more solid it is. Therefore, there is a certain buffer time for the movement of the splint 20.

[0022] like Figure 3 and Figure 6 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the anti-falling component includes a telescopic tube 10 fixedly connected to the outer wall of the vertical plate 19, the outer wall of the telescopic tube 10 is sleeved with a strong spring 11, and the strong spring 11 is fixedly connected to the vertical plate 19, and the vertical plate 19 is pushed to move by the strong thrust of the strong spring 11, thereby driving the slide plate 18 to slide in the fixed plate 7 through the slider 17.

[0023] like Figure 7 As shown, as a preferred embodiment, on the basis of the above method, further, the outer wall of the guide rod 24 is fixedly connected to a limiting plate 23, the guide rod 24 is fixedly connected to the slider 17, the limiting plate 23 limits the guide rod 24, and cooperates with the slider 17 to correct the position of the guide rod 24 to prevent the guide rod 24 from shaking.

[0024] like Figure 8 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, an embedded sealing gasket 25 is fixedly connected to the inner wall of the fixed tube 12, and a slide groove 26 is provided on the embedded sealing gasket 25 and the outer wall of the fixed tube 12, and the slide groove 26 is slidably connected to the slide plate 18, so that the embedded sealing gasket 25 is used to seal the slide plate 18 when it moves, and at the same time, the moving direction of the slide plate 18 is corrected by the fixed tube 12 to ensure the stability of the moving direction of the slide plate 18.

[0025] like Figure 3As shown, as a preferred embodiment, on the basis of the above method, further, one end of the strong spring 11 away from the vertical plate 19 is fixedly connected to the auxiliary joint sleeve 3, and the clamping is achieved by the thrust of the strong spring 11.

[0026] like Figure 3 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, a partition 8 is fixedly connected inside the sub-joint sleeve 3, and a special space is formed between the partition 8 and the sub-joint sleeve 3, which is convenient for recycling the leaked oil and ensuring the safety of the equipment.

[0027] like Fig.10 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the outer wall of the inner oil pipe 4 is provided with evenly distributed sealing grooves 27, the inner wall of the sealing groove 27 is fixedly connected with an inclined plate 28, and the inclined plate 28 and the inner wall of the sealing groove 27 are abutted against the outer wall of the clamping sealing gasket 21, and the clamping plate 20 is driven out of the sealing groove 27 by rotating the inner oil pipe 4 and through the inclined plate 28.

[0028] like Figure 2 As shown, as a preferred embodiment, on the basis of the above method, further, a connecting sealing ring B15 is fixedly connected to the inner wall of the main joint sleeve 1, and the outer wall of the connecting sealing ring B15 is abutted against the outer wall of the inner oil pipe 4, and the connection between the inner oil pipe 4 and the main joint sleeve 1 is sealed by the connecting sealing ring B15, which is the first layer of sealing.

[0029] like Figure 9-10 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the outer wall of the inner oil pipe 4 is fixedly connected with a pressure sealing gasket 14, and the outer wall of the pressure sealing gasket 14 is abutted against the outer wall of the connecting sealing ring A13, and the connection between the inner oil pipe 4 and the auxiliary joint sleeve 3 is sealed by the pressure sealing gasket 14, which is the second layer of sealing.

[0030] Specifically, when the hydraulic pipe metal joint with a double-layer sealing structure is used: first, connect the outer oil pipe 2 with the inner oil pipe 4. Specifically, insert the inner oil pipe 4 into the auxiliary joint sleeve 3 and press it hard. The inner oil pipe 4 will squeeze the clamping plate 20, and then push the slide plate 18 to slide in the fixed plate 7 through the slider 17, and then drive the guide rod 24 to move. The guide rod 24 squeezes the guide groove 22 to drive the driving plate 6 to rotate in the main joint sleeve 1 through the rotating block 5. Since there is a corresponding friction between the rotating block 5 and the main joint sleeve 1, a certain driving force is required to rotate the rotating block 5, that is, a corresponding thrust is required to push the inner oil pipe 4. When the inner oil pipe 4 moves, the strong spring 11 is thrusted by the vertical plate 19 on the slide plate 18 and thus subjected to force The telescopic tube 10 is compressed and elastically stored, and shrinks and shortens. When the splint 20 is aligned with the sealing groove 27, the strong spring 11 releases the elastic energy, thereby pushing the vertical plate 19 and the splint 20 to move, thereby clamping the inner oil pipe 4. At this time, the splint 20 seals the connection between the splint 20 and the sealing groove 27 through the clamping sealing gasket 21. At the same time, the clamping sealing gasket 21 can increase the friction of extrusion, reduce the risk of movement of the splint 20, and increase the firmness of the clamping. At this time, the inner oil pipe 4 is against the connecting sealing ring B15, and the connecting sealing ring A13 is against the pressing sealing gasket 14 to perform double-layer sealing, thereby realizing the connection. When the hydraulic pressure is too large, its pressure will push the inner oil pipe 4 to move outward, first through the nesting between the sealing groove 27 and the splint 20 The relationship makes it difficult to achieve lateral pushing. By rotating the inner oil pipe 4 and driving the clamping plate 20 out of the sealing groove 27 through the inclined plate 28, a protection can be provided through the connection relationship between the sealing groove 27 and the clamping plate 20. In addition, if the pressure on the inner oil pipe 4 is too large and causes the clamping plate 20 to move out of the sealing groove 27, the clamping plate 20 will push the sliding plate 18 to move, and then slide in the fixed plate 7 through the slider 17, thereby driving the guide rod 24 to move, and the guide rod 24 squeezes the guide groove 22 to drive the driving plate 6 to rotate, thereby driving the rotating block 5 to rotate in the main joint jacket 1, thereby converting the movement mode of the clamping plate 20 in the fixed direction into a rotating movement mode. There is a certain friction between the rotation of the rotating block 5 and the main joint jacket 1, and the rotating block 5 and During the friction process of the main joint sleeve 1, the surface of the material will be worn and tiny wear particles will be generated. These particles will accumulate on the friction interface and increase the friction. The longer the use time, the stronger the friction and the stronger the clamping plate 20. Therefore, there is a certain buffer time for the movement of the clamping plate 20 to facilitate maintenance, thereby doubly protecting the hydraulic system and preventing equipment damage caused by excessive pressure. When hydraulic leakage occurs, the oil will flow through the space formed between the auxiliary joint sleeve 3 and the fixed pipe 12, and flow into the special space formed between the partition plate 8 and the auxiliary joint sleeve 3. The oil will flow into the telescopic tube 10 through the oil guide groove 9, and push the vertical plate 19 to drive the slide plate 18 and the clamping plate 20 to squeeze the sealing groove 27. The stronger the pressure, the more firmly the clamping plate 20 is clamped.Thereby preventing the inner oil pipe 4 from falling off and avoiding the loss caused by the falling off of the inner oil pipe 4.

[0031] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A hydraulic pipe metal joint with a double-layer sealing structure, comprising a main joint jacket (1), characterized in that: The outer wall of the main joint jacket (1) is fixedly connected to the auxiliary joint jacket (3), one end of the main joint jacket (1) away from the auxiliary joint jacket (3) is fixedly connected to the outer oil pipe (2), and one end of the auxiliary joint jacket (3) away from the main joint jacket (1) is fixedly connected to the inner oil pipe (4), and further comprises: A connecting sealing ring A (13) is fixedly connected to the outer wall of the auxiliary joint sleeve (3); A clamping and locking assembly, the clamping and locking assembly comprising a fixing plate (7) fixedly connected to the inner wall of the auxiliary joint sleeve (3), the inner wall of the fixing plate (7) being fixedly connected to a fixing tube (12), and the fixing tube (12) being fixedly connected to a partition plate (8), the inner wall of the fixing plate (7) being slidably connected to evenly distributed sliders (17), the outer wall of the slider (17) being fixedly connected to a slide plate (18), the outer wall of the slide plate (18) being fixedly connected to a vertical plate (19), the outer wall of the slide plate (18) being fixedly connected to a clamping plate (20), and the end of the clamping plate (20) away from the vertical plate (19) being fixedly connected to a clamping sealing pad (21); Oil guide grooves (9) are evenly arranged on the inner wall of the auxiliary joint outer sleeve (3); A rotation groove (16) is formed on the inner wall of the main joint outer sleeve (1); A driven component, arranged on the inner wall of the rotating groove (16); The anti-falling component is arranged on the outer wall of the vertical plate (19).

2. A hydraulic pipe metal joint with a double-layer sealing structure according to claim 1, characterized in that: The driven assembly comprises a rotating block (5) rotatably connected to the inner wall of the rotating groove (16); one end of the rotating block (5) away from the rotating groove (16) is fixedly connected to a driving disk (6); the driving disk (6) is rotatably connected to a fixed tube (12); the outer wall of the driving disk (6) is provided with evenly distributed guide grooves (22); the inner wall of the guide groove (22) is provided with a guide rod (24); the outer wall of the guide rod (24) abuts against the inner wall of the guide groove (22); and the guide rod (24) is connected to the oil guide groove (9).

3. The hydraulic pipe metal joint with a double-layer sealing structure according to claim 1, characterized in that: The anti-falling component comprises a telescopic tube (10) fixedly connected to the outer wall of the vertical plate (19), the outer wall of the telescopic tube (10) is sleeved with a strong spring (11), and the strong spring (11) is fixedly connected to the vertical plate (19).

4. The hydraulic pipe metal joint with a double-layer sealing structure according to claim 2, characterized in that: The outer wall of the guide rod (24) is fixedly connected to the limit plate (23), and the guide rod (24) is fixedly connected to the slide block (17).

5. The hydraulic pipe metal joint with a double-layer sealing structure according to claim 1, characterized in that: An embedded sealing gasket (25) is fixedly connected to the inner wall of the fixed tube (12), and a sliding groove (26) is provided on the outer wall of the embedded sealing gasket (25) and the fixed tube (12), and the sliding groove (26) is slidably connected to the sliding plate (18).

6. The hydraulic pipe metal joint with a double-layer sealing structure according to claim 3, characterized in that: One end of the strong spring (11) away from the vertical plate (19) is fixedly connected to the auxiliary joint sleeve (3).

7. The hydraulic pipe metal joint with a double-layer sealing structure according to claim 1, characterized in that: A partition plate (8) is fixedly connected inside the secondary joint housing (3).

8. The hydraulic pipe metal joint with a double-layer sealing structure according to claim 1, characterized in that: The outer wall of the inner oil pipe (4) is provided with evenly distributed sealing grooves (27), the inner wall of the sealing groove (27) is fixedly connected with an inclined plate (28), and the inclined plate (28) and the inner wall of the sealing groove (27) are in contact with the outer wall of the clamping sealing gasket (21).

9. The hydraulic pipe metal joint with a double-layer sealing structure according to claim 1, characterized in that: A connecting seal ring B (15) is fixedly connected to the inner wall of the main joint outer sleeve (1), and the outer wall of the connecting seal ring B (15) abuts against the outer wall of the inner oil pipe (4).

10. The hydraulic pipe metal joint with a double-layer sealing structure according to claim 1, characterized in that: A pressure seal pad (14) is fixedly connected to the outer wall of the inner oil pipe (4), and the outer wall of the pressure seal pad (14) abuts against the outer wall of the connecting seal ring A (13).

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