Corrosion-resistant quick-release joint for hydraulic pipe

Abstract

The utility model provides a hydraulic pipe corrosion -resistant quick release joint relates to quick release joint technical field, the utility model discloses a first connecting pipe and second connecting pipe, the first connecting pipe is connected with second connecting pipe through the joint assembly, the inside of first connecting pipe and second connecting pipe all is provided with check valve subassembly, the inside of screw pipe is provided with the buffer device that can buffer the impact force that hydraulic oil enters the inside of screw pipe produces, the utility model discloses a buffer device is set up, and the inside of screw pipe when hydraulic oil enters will first enter the inside of rubber conical pipe after quick release joint installation is completed, and the impact force after hydraulic oil enters screw pipe is buffered through the deformation force of first spring and the shape restriction of conical pipe, as far as possible avoid the hydraulic impact that quick release joint connects instantaneously produces and cause damage to the check valve subassembly in quick release joint inside, promote the stability and service life when quick release joint uses.

Description

Technical Field

[0001] This utility model relates to the field of quick-release coupling technology, and in particular to corrosion-resistant quick-release couplings for hydraulic pipes. Background Technology

[0002] The corrosion-resistant quick-release hydraulic hose coupling is a tool used to assist in connecting hydraulic lines. Its outer surface is coated with a corrosion-resistant coating. When connecting hydraulic lines, quick-release couplings are installed at one end of each of the two hydraulic lines to be connected. The two hydraulic lines are then connected through the two quick-release couplings. When the lines are disconnected, the internal check valve closes to prevent hydraulic oil leakage.

[0003] When two hydraulic lines are connected using a quick-release coupling, the hydraulic oil entering the coupling at the moment of connection will cause a large hydraulic shock to the check valve assembly inside the coupling. Over long-term use, this will cause severe wear to the check valve assembly and may also cause the check valve assembly to loosen inside the coupling, affecting the performance of the quick-release coupling and reducing its service life. Utility Model Content

[0004] The purpose of this invention is to solve the problem that when two hydraulic lines are connected by a quick-release connector, the hydraulic oil entering at the moment of connection will cause a large hydraulic shock to the check valve assembly inside the connector. This results in severe wear on the check valve assembly during long-term use and can easily lead to loosening of the check valve assembly inside the connector, affecting the performance of the quick-release connector and reducing its service life. Therefore, a corrosion-resistant quick-release connector for hydraulic lines is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a corrosion-resistant quick-release hydraulic pipe connector, comprising a first connector and a second connector, the first connector and the second connector being connected by a snap-fit ​​assembly, one end of each of the first connector and the second connector being fixedly connected to a threaded pipe, and both the first connector and the second connector being provided with a one-way valve assembly inside, the one-way valve assembly being used to seal the interior of the first connector and the second connector when they are disassembled, and the threaded pipe being provided with a buffer device inside, which can buffer the impact force generated by hydraulic oil entering the threaded pipe.

[0006] Furthermore, the buffer device includes a tapered tube made of rubber. The wide end of the tapered tube is fixedly connected to the inner wall of a threaded tube. A retaining ring is fixedly connected to the outer surface of the threaded tube. Four round rods are slidably connected to the inner wall of the retaining ring. The round rods slide on the inner wall of the threaded tube and are distributed circumferentially on the outer surfaces of the retaining ring and the threaded tube. Two pressure blocks of different sizes are fixedly connected to one end of each round rod. The pressure blocks are attached to the outer surface of the tapered tube. A first spring is provided on the outer surface of the round rod. The two ends of the first spring are fixedly connected to one side of the round rod and one side of the inner wall of the retaining ring, respectively.

[0007] Furthermore, the inner wall of the tapered tube is provided with several buffer grooves, which are distributed circumferentially on the inner wall of the tapered tube.

[0008] Furthermore, a sealing sheet is fixedly connected to the end of the round rod away from the pressure block, and the sealing sheet is attached to the outer surface of the retaining ring in the normal state of the first spring.

[0009] Furthermore, a reinforcing ring is fixedly connected to the outer side of the narrow end of the tapered tube. The reinforcing ring is made of metal, and several support blocks are fixedly connected to the outer surface of the reinforcing ring. The end of the support block away from the reinforcing ring is fixedly connected to the inner wall of the threaded tube.

[0010] Furthermore, a rubber sealing ring is fixedly connected to the side of the reinforcing ring away from the tapered tube.

[0011] Furthermore, the snap-fit ​​assembly includes a sleeve, one end of which is fixedly connected to one end of the first connecting pipe. A sliding ring is slidably connected to the outer surface of the sleeve, and a protrusion is provided on the inner wall of the sliding ring. A second spring is provided on one side of the inner wall of the sliding ring, and the two ends of the second spring are fixedly connected to the protrusion on the inner wall of the sliding ring and one side of the outer surface of the sleeve, respectively. A plurality of through grooves are formed on the outer surface of the sleeve, and a ball is provided inside the through groove. The ball can move inside the through groove and will not leave the through groove. A snap-fit ​​groove is formed on the outer surface of the second connecting pipe, and the top two sides of the inner wall of the snap-fit ​​groove are inclined. The size of the outer surface of the second connecting pipe is adapted to the size of the inner wall of the sleeve.

[0012] Furthermore, the one-way valve assembly includes a groove block, which is fixed to the inner wall of the first or second connecting pipe. The outer surface of the groove block has several circular holes. A slide rod is slidably connected to the inner wall of the groove block. A sealing block is fixedly connected to one end of the slide rod. A third spring is provided on one side of the sealing block. The two ends of the third spring are fixedly connected to one side of the sealing block and one side of the groove block, respectively.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this invention, by setting a buffer device, after the quick-release connector is installed, when the hydraulic oil enters the inside of the threaded pipe, it will first enter the inside of the rubber tapered tube. The deformation force of the first spring and the shape restriction of the tapered tube buffer the impact force of the hydraulic oil after entering the threaded pipe, so as to avoid damage to the one-way valve assembly inside the quick-release connector caused by the hydraulic shock generated at the moment of connection, thereby improving the stability and service life of the quick-release connector during use. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial cross-sectional view of the three-dimensional structure of this utility model; Figure 3 This is a three-dimensional structural diagram of the threaded pipe section of this utility model; Figure 4 This is a three-dimensional structural diagram of the tapered tube of this utility model; Figure 5 This is a three-dimensional structural diagram of the first connecting pipe of this utility model; Figure 6 This is a three-dimensional structural diagram of the second connecting pipe of this utility model.

[0015] Legend: 1. First connecting pipe; 2. Buffer device; 21. Tapered tube; 22. Snap ring; 23. Round rod; 24. Pressure block; 25. First spring; 26. Buffer groove; 27. Sealing plate; 28. Reinforcing ring; 29. ​​Support block; 210. Sealing ring; 3. Snap-fit ​​assembly; 31. Sleeve; 32. Second spring; 33. Sliding ring; 34. Through groove; 35. Ball block; 36. Snap groove; 4. Second connecting pipe; 5. One-way valve assembly; 51. Groove block; 52. Slide rod; 53. Sealing block; 54. Third spring; 6. Threaded tube. Detailed Implementation

[0016] Example 1, as Figure 1-3 As shown, the corrosion-resistant quick-release hydraulic pipe connector includes a first connector 1 and a second connector 4. The first connector 1 and the second connector 4 are connected by a snap-fit ​​assembly 3. One end of the first connector 1 and the second connector 4 is fixedly connected to a threaded pipe 6. The first connector 1 and the second connector 4 are both provided with a one-way valve assembly 5. The one-way valve assembly 5 is used to seal the inside of the first connector 1 and the second connector 4 when they are disassembled. The threaded pipe 6 is provided with a buffer device 2 that can buffer the impact force generated by the hydraulic oil entering the threaded pipe 6.

[0017] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6As shown in this embodiment: the snap-fit ​​assembly 3 includes a sleeve 31, one end of which is fixedly connected to one end of the first connecting pipe 1. A sliding ring 33 is slidably connected to the outer surface of the sleeve 31. A protrusion is provided on the inner wall of the sliding ring 33. A second spring 32 is provided on one side of the inner wall of the sliding ring 33. The two ends of the second spring 32 are fixedly connected to the protrusion on the inner wall of the sliding ring 33 and one side of the outer surface of the sleeve 31, respectively. A plurality of through grooves 34 are opened on the outer surface of the sleeve 31. A ball block 35 is provided inside the through groove 34. The ball block 35 can move inside the through groove 34 and will not detach from the through groove 34. A snap-fit ​​groove 36 is opened on the outer surface of the second connecting pipe 4. The top two sides of the inner wall of the snap-fit ​​groove 36 are inclined. The size of the outer surface of the second connecting pipe 4 is adapted to the size of the inner wall of the sleeve 31. When the first connecting pipe 1 and the second connecting pipe 4 are connected, the sliding ring 33 is pulled on the outside of the sliding ring 33 on the outer surface of the sleeve 31 to control the sliding ring 33 in the sleeve. The outer side of the sliding ring 31 slides towards the first connector 1 and compresses the second spring 32. Then, the second connector 4 is inserted into the sleeve 31 at one end of the first connector 1. When the second connector 4 enters the sleeve 31, the outer surface contacts the ball block 35 inside the through groove 34 and pushes the ball block 35 outward. When the second connector 4 is fully inside the sleeve 31, the groove 36 on the outer surface is located at the through groove 34 on the outer surface of the sleeve 31. Releasing the sliding ring 33 and restoring the second spring 32 to its original state will push the sliding ring 33 to move away from the first connector 1. The protrusion on the inner wall of the sliding ring 33 will press the ball block 35 against the groove 36 on the outer surface of the second connector 4. The second connector 4 is connected to the first connector 1. When separating the first connector 1 and the second connector 4, the sliding ring 33 is pulled towards the first connector 1 and then the second connector 4 is pulled outward. The ball block 35 will move on the inclined surfaces on both sides of the inner wall of the groove 36, causing the second connector 4 to disengage from the inside of the sleeve 31.

[0018] Reference Figure 1 and Figure 2As shown, in this embodiment: the one-way valve assembly 5 includes a groove block 51, which is fixed to the inner wall of the first connecting pipe 1 or the second connecting pipe 4. The outer surface of the groove block 51 has several circular holes. A slide rod 52 is slidably connected to the inner wall of the groove block 51. A sealing block 53 is fixedly connected to one end of the slide rod 52. A third spring 54 is provided on one side of the sealing block 53. The two ends of the third spring 54 are fixedly connected to one side of the sealing block 53 and one side of the groove block 51, respectively. When the first connecting pipe 1 and the second connecting pipe 4 are not connected, the sealing blocks 53 inside the first connecting pipe 1 and the second connecting pipe 4 will be located at the outermost end of their inner walls, sealing the interior of the first connecting pipe 1 and the second connecting pipe 4 through a snap-fit ​​mechanism. When component 3 connects the first connector 1 and the second connector 4, the sealing blocks 53 inside the first connector 1 and the second connector 4 will come into contact with each other, causing the two sealing blocks 53 to slide away from each other on the inner wall of the groove block 51 via the slide rod 52 and compress the third spring 54. At this time, the hydraulic oil connected to the first connector 1 and the second connector 4 can flow through the round hole on the outer surface of the groove block 51 and then through the outside of the two sealing blocks 53. After the first connector 1 and the second connector 4 are separated, the third spring 54 on one side of the sealing block 53 returns to its original state and pushes the sealing block 53 against the inner wall of the first connector 1 and the second connector 4, sealing the outermost end of the inner wall of the first connector 1 and the second connector 4.

[0019] Reference Figure 1-6As shown in this embodiment: the buffer device 2 includes a tapered tube 21, which is made of rubber. The wide end of the tapered tube 21 is fixedly connected to the inner wall of the threaded tube 6. A retaining ring 22 is fixedly connected to the outer surface of the threaded tube 6. Four round rods 23 are slidably connected to the inner wall of the retaining ring 22. The round rods 23 slide on the inner wall of the threaded tube 6 and are circumferentially distributed on the outer surface of the retaining ring 22 and the threaded tube 6. Two pressure blocks 24 of different sizes are fixedly connected to one end of the round rods 23. The pressure blocks 24 are attached to the outer surface of the tapered tube 21. A first spring 25 is provided on the outer surface of the round rods 23. The two ends of the first spring 25 are fixedly connected to one side of the round rod 23 and one side of the inner wall of the retaining ring 22, respectively. By setting the tapered tube 21, when connecting the quick-release connector to the hydraulic oil pipeline, one end of the threaded tube 6 is sleeved on the outside of the hydraulic oil pipeline, so that the inner wall of the threaded tube 6 is in contact with the hydraulic oil pipeline. One end of the pipe is threaded. After the quick-release connector is installed, when the hydraulic oil enters the interior of the threaded pipe 6, it will first enter the interior of the rubber tapered pipe 21, and then enter the narrow end through the wide end of the tapered pipe 21. When the hydraulic oil moves along the inner wall of the tapered pipe 21, the smaller diameter of the tapered pipe 21 will buffer the impact force. At the same time, the sudden impact generated by the hydraulic oil entering the interior of the threaded pipe 6 will cause the surface of the tapered pipe 21 to deform, pushing the pressure block 24 on the outside of the tapered pipe 21 to make the round rod 23 slide outward on the inner wall of the threaded pipe 6 and the retaining ring 22 and compress the first spring 25. The deformation force of the first spring 25 and the shape restriction of the tapered pipe 21 will buffer the impact force after the hydraulic oil enters the threaded pipe 6, and minimize the damage to the one-way valve assembly 5 inside the quick-release connector caused by the hydraulic shock generated at the moment of connection, thereby improving the stability and service life of the quick-release connector.

[0020] Reference Figure 2-4As shown in this embodiment: The inner wall of the tapered tube 21 is provided with several buffer grooves 26, which are distributed circumferentially on the inner wall of the tapered tube 21. Part of the hydraulic oil entering the tapered tube 21 flows along the inner wall of the tapered tube 21 into the buffer grooves 26. Upon reaching the top of the buffer groove 26, the hydraulic oil experiences partial backflow due to the obstruction at the top of the inner wall of the buffer groove 26, thus further buffering the flow of hydraulic oil and improving the buffering effect. A sealing plate 27 is fixedly connected to the end of the round rod 23 away from the pressure block 24. In the normal state, the sealing plate 27 adheres to the outer surface of the retaining ring 22. By setting the sealing plate 27, the contact point between the top of the round rod 23 and the inner wall of the retaining ring 22 can be sealed, preventing debris from entering the round rod 23 in the normal state of the first spring 25. The connection between the top end and the inner wall of the retaining ring 22 affects the normal movement of the round rod 23. A reinforcing ring 28 is fixedly connected to the outer side of the narrow end of the tapered tube 21. The reinforcing ring 28 is made of metal. Several support blocks 29 are fixedly connected to the outer surface of the reinforcing ring 28. The end of the support block 29 away from the reinforcing ring 28 is fixedly connected to the inner wall of the threaded tube 6. By setting the reinforcing ring 28, the shape of the outer surface of the narrow end of the tapered tube 21 can be reinforced, the surface structural strength of the tapered tube 21 can be improved, and the probability of the narrow end of the inner wall of the tapered tube 21 being damaged by impact can be reduced. A rubber sealing ring 210 is fixedly connected to the side of the reinforcing ring 28 away from the tapered tube 21. By setting the sealing ring 210, the connection between the quick-release connector connected to one end of the threaded tube 6 and the threaded tube 6 can be further sealed.

[0021] Working principle: When installing the quick-release coupling, the threaded tubes 6 at one end of the second connector 4 and the first connector 1 are respectively fitted onto the outside of the hydraulic oil pipeline, so that the inner wall of the threaded tube 6 is threadedly connected to one end of the hydraulic oil pipeline, thus completing the installation of the second connector 4 and the first connector 1. Then, the sliding ring 33 on the outer surface of the sleeve 31 is pulled to control the sliding ring 33 to slide towards the first connector 1 on the outside of the sleeve 31 and compress the second spring 32. Then, the second connector 4 is inserted into the sleeve 31 at one end of the first connector 1. When the second connector 4 enters the sleeve 31, its outer surface contacts the ball block 35 inside the through groove 34, which pushes the ball block 35 to move outward. When the second connector 4 is fully inserted into the sleeve 31, the groove 36 on the outer surface is located at the through groove 34 on the outer surface of the sleeve 31. Releasing the sliding ring 33 and restoring the second spring 32 to its original state will push the sliding ring 33 to move away from the first connector 1. The protrusion on the inner wall of the sliding ring 33 will press the ball block 35 against the groove 36 on the outer surface of the second connector 4, connecting the second connector 4 with the first connector 1. When the first connector 1 and the second connector 4 are connected, the sealing blocks 53 inside the first connector 1 and the second connector 4 will contact each other, causing the two sealing blocks 53 to slide and move away from each other on the inner wall of the groove block 51 via the slide rod 52 and compress the third spring 54. When hydraulic oil enters the threaded tube 6, it first enters the rubber tapered tube 21 and then passes through the wide end of the tapered tube 21 and enters the narrow end. As the hydraulic oil moves along the inner wall of the tapered tube 21, the smaller diameter of the tapered tube 21 buffers the impact force. At the same time, the sudden impact generated by the hydraulic oil entering the threaded tube 6 causes the surface of the tapered tube 21 to deform, pushing the pressure block 24 on the outside of the tapered tube 21 to make the round rod 23 slide outward on the inner wall of the threaded tube 6 and the retaining ring 22 and compress the first spring 25. The deformation force of the first spring 25 and the shape restriction of the tapered tube 21 buffer the impact force after the hydraulic oil enters the threaded tube 6. Then the hydraulic oil flows through the round hole on the outer surface of the groove block 51 and through the outside of the two sealing blocks 53. When the first connector 1 and the second connector 4 are separated, the sliding ring 33 is pulled to move towards the first connector 1, and then the second connector 4 is pulled outward. The ball block 35 will move on the inclined surfaces on both sides of the inner wall of the slot 36, so that the second connector 4 is disengaged from the inside of the sleeve 31. The third spring 54 on one side of the sealing block 53 returns to its original state and pushes the sealing block 53 against the inner wall of the first connector 1 and the second connector 4, sealing the outermost end of the inner wall of the first connector 1 and the second connector 4.

[0022] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. A corrosion-resistant quick-release hydraulic pipe connector, comprising a first connecting pipe (1) and a second connecting pipe (4), characterized in that: The first connector (1) and the second connector (4) are connected by a snap-fit ​​assembly (3). One end of the first connector (1) and the second connector (4) is fixedly connected to a threaded pipe (6). The first connector (1) and the second connector (4) are both provided with a one-way valve assembly (5). The one-way valve assembly (5) is used to seal the inside of the first connector (1) and the second connector (4) when they are separated. The threaded pipe (6) is provided with a buffer device (2) that can buffer the impact force generated by the hydraulic oil entering the threaded pipe (6).

2. The corrosion-resistant quick-release hydraulic pipe connector according to claim 1, characterized in that: The buffer device (2) includes a tapered tube (21) made of rubber. The wide end of the tapered tube (21) is fixedly connected to the inner wall of the threaded tube (6). A retaining ring (22) is fixedly connected to the outer surface of the threaded tube (6). Four round rods (23) are slidably connected to the inner wall of the retaining ring (22). The round rods (23) slide on the inner wall of the threaded tube (6). The round rods (23) are circumferentially distributed on the outer surfaces of the retaining ring (22) and the threaded tube (6). Two pressure blocks (24) of different sizes are fixedly connected to one end of the round rod (23). The pressure blocks (24) are attached to the outer surface of the tapered tube (21). A first spring (25) is provided on the outer surface of the round rod (23). The two ends of the first spring (25) are fixedly connected to one side of the round rod (23) and one side of the inner wall of the retaining ring (22), respectively.

3. The corrosion-resistant quick-release hydraulic pipe connector according to claim 2, characterized in that: The inner wall of the tapered tube (21) is provided with several buffer grooves (26), which are distributed in a circular pattern on the inner wall of the tapered tube (21).

4. The corrosion-resistant quick-release hydraulic pipe connector according to claim 3, characterized in that: A sealing plate (27) is fixedly connected to the end of the round rod (23) away from the pressure block (24). In the normal state, the sealing plate (27) of the first spring (25) is attached to the outer surface of the retaining ring (22).

5. The corrosion-resistant quick-release hydraulic pipe connector according to claim 4, characterized in that: A reinforcing ring (28) is fixedly connected to the outer side of the narrow end of the tapered tube (21). The reinforcing ring (28) is made of metal. Several support blocks (29) are fixedly connected to the outer surface of the reinforcing ring (28). The end of the support block (29) away from the reinforcing ring (28) is fixedly connected to the inner wall of the threaded tube (6).

6. The corrosion-resistant quick-release hydraulic pipe connector according to claim 5, characterized in that: A rubber sealing ring (210) is fixedly connected to the side of the reinforcing ring (28) away from the tapered tube (21).

7. The corrosion-resistant quick-release hydraulic pipe connector according to claim 1, characterized in that: The snap-fit ​​assembly (3) includes a sleeve (31), one end of which is fixedly connected to one end of the first connecting pipe (1). A sliding ring (33) is slidably connected to the outer surface of the sleeve (31). A protrusion is provided on the inner wall of the sliding ring (33). A second spring (32) is provided on one side of the inner wall of the sliding ring (33). The two ends of the second spring (32) are fixedly connected to the protrusion on the inner wall of the sliding ring (33) and one side of the outer surface of the sleeve (31), respectively. A plurality of through grooves (34) are opened on the outer surface of the sleeve (31). A ball block (35) is provided inside the through groove (34). The ball block (35) can move inside the through groove (34) and will not leave the through groove (34). A slot (36) is opened on the outer surface of the second connecting pipe (4). The top two sides of the inner wall of the slot (36) are inclined. The size of the outer surface of the second connecting pipe (4) is adapted to the size of the inner wall of the sleeve (31).

8. The corrosion-resistant quick-release hydraulic pipe connector according to claim 1, characterized in that: The one-way valve assembly (5) includes a groove block (51), which is fixed to the inner wall of the first connecting pipe (1) or the second connecting pipe (4). The outer surface of the groove block (51) is provided with several round holes. A slide rod (52) is slidably connected to the inner wall of the groove block (51). A sealing block (53) is fixedly connected to one end of the slide rod (52). A third spring (54) is provided on one side of the sealing block (53). The two ends of the third spring (54) are fixedly connected to one side of the sealing block (53) and one side of the groove block (51), respectively.

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