Leakage-proof hydraulic pipe joint assembly

Abstract

The utility model belongs to the technical field of hydraulic pipe joints, and particularly relates to a leakage-proof hydraulic pipe joint assembly. Comprising a connecting pipe body, inner connecting pipes are symmetrically and fixedly connected to the connecting pipe body, outer protective pipes corresponding to the inner connecting pipes are symmetrically arranged on the connecting pipe body, openings are formed in the outer protective pipes, partition plates are fixedly connected to the outer protective pipes, threads are arranged outside the outer protective pipes, and fixing nuts are arranged on the outer protective pipes through the threads. An upper gasket and a lower gasket are arranged on the outer protection pipe, and limiting teeth are arranged between the upper gasket and the lower gasket. According to the utility model, when slight leakage occurs to the joint, enough capability of reinforcing sealing again can be provided; through mutual connection of the limiting teeth of the upper gasket and the lower gasket, the connecting pipe assembly can be suitable for special vibration places; through the design of the corrugated pipe, the connecting pipe body can be connected between hydraulic pipes on different axes; and the overall practicability and durability are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic pipe joints, and in particular relates to a leak-proof hydraulic pipe joint assembly. Background Art

[0002] The components that connect high-pressure oil pipes in the hydraulic system are hydraulic pipe joints. Hydraulic pipe joints can be divided into hydraulic hoses, high-pressure ball valves, quick connectors, and ferrule-type pipe joints.

[0003] Many existing leak-proof joints, after being connected to hydraulic pipes for a long time, cannot be effectively adjusted or protected once leakage occurs, and need to be replaced or repaired. In addition, in some special occasions, such as places with certain vibrations, the nuts at the connection may loosen over time, affecting the overall sealing. To address the above problems, a leak-proof hydraulic pipe joint assembly is proposed. Utility Model Content

[0004] In order to solve the problems existing in the background technology, the utility model provides a leak-proof hydraulic pipe joint assembly; it has the ability to automatically repair after a slight leakage occurs, and can also be used in vibration places through a corresponding structure.

[0005] The utility model provides a leak-proof hydraulic pipe joint assembly, including a connecting pipe body, an inner connecting pipe is symmetrically fixedly connected to the connecting pipe body, an outer protective pipe is symmetrically provided on the connecting pipe body corresponding to the inner connecting pipe, an opening is provided on the outer protective pipe, a partition is fixedly connected to the outer protective pipe, a thread is provided on the outside of the outer protective pipe, a fixing nut is provided on the outer protective pipe through the thread, an upper washer and a lower washer are slidably connected to the outer protective pipe between the partition and the fixing nut, and limiting teeth are provided between the upper washer and the lower washer.

[0006] Furthermore, a bellows is provided on the connecting pipe body.

[0007] Furthermore, a water-swellable rubber sealing ring is fixedly installed in the outer protective tube.

[0008] Furthermore, the thread angle on the thread is smaller than the inclination angle of the limiting tooth.

[0009] Furthermore, the inner connecting pipe is provided with a chamfer.

[0010] Furthermore, the inner diameters of the upper gasket and the lower gasket are larger than the outer diameter of the outer protective tube.

[0011] Beneficial effects of the utility model:

[0012] The utility model adopts the design of water-expanding rubber sealing ring, which can provide sufficient re-sealing ability when slight leakage occurs in the joint, thereby improving the overall durability; the mutual connection of the limiting teeth of the upper gasket and the lower gasket can meet the requirements of the connection pipe assembly being suitable for places with special vibrations; the design of the bellows can meet the requirements of connecting the connection pipe body between hydraulic pipes on different axes; the overall practicality and durability are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of a leak-proof hydraulic pipe joint assembly of the present utility model.

[0014] Figure 2 This is a schematic diagram of area A of a leak-proof hydraulic pipe joint assembly of the present invention.

[0015] As shown in the figure:

[0016] 1. Connecting pipe body, 2. Inner connecting pipe, 3. Outer protective pipe, 4. Opening, 5. Partition, 6. Thread, 7. Fixing nut, 8. Upper washer, 9. Lower washer, 10. Limiting teeth, 11. Bellows, 12. Water-swelling rubber sealing ring, 13. Chamfer. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] In the description of the utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0019] Please see all drawings for this manual:

[0020] A leak-proof hydraulic pipe joint assembly includes a connecting pipe body 1, an inner connecting pipe 2 being symmetrically fixedly connected to the connecting pipe body 1, an outer protective pipe 3 being symmetrically provided on the connecting pipe body 1 corresponding to the inner connecting pipe 2, and an opening 4 being provided on the outer protective pipe 3, which enables a fixing nut 7 to be easily inserted into an external pipe when not tightened; a partition 5 being fixedly connected to the outer protective pipe 3, the outer protective pipe 3 being provided with a thread 6, the outer protective pipe 3 being provided with a fixing nut 7 through the thread, an upper washer 8 and a lower washer 9 being slidably connected to the outer protective pipe 3 between the partition 5 and the fixing nut 7, and a limiting tooth 10 being provided between the upper washer 8 and the lower washer 9;

[0021] From the above description, it can be seen that the external hydraulic pipe is inserted into the gap between the internal connecting pipe 2 and the outer protective pipe 3. After the insertion is completed, the fixing nut 7 is rotated to tighten the separated outer protective pipe 3 so that the hydraulic pipe is effectively connected. In the process of rotating the fixing nut 7 to the bottom, the upper washer 8 and the lower washer 9 will slowly approach each other, and the final fit is achieved through the limiting teeth 10, which can effectively prevent the fixing nut 7 from loosening after encountering vibration.

[0022] As a technical optimization solution of the present invention, a bellows 11 is provided on the connecting pipe body 1;

[0023] It can be seen from the above description that the bellows 11 can meet the bending requirements of a certain amount of angles of the connecting pipe body 1 and can connect hydraulic pipes in more situations.

[0024] As a technical optimization solution of the present invention, a water-expandable rubber sealing ring 12 is fixedly installed in the outer protective tube 3;

[0025] From the above description, it can be seen that the principle of the water-swelling rubber sealing ring 12 is mainly based on its special material properties and physical and chemical changes. The rubber itself has good elasticity and mechanical strength, which provides support for the expansion of the water-swelling rubber sealing ring 12. The material of the water-swelling rubber sealing ring 12 contains a large number of hydrophilic groups, which have a strong affinity for water molecules; when the sealing ring comes into contact with water, water molecules will enter the rubber through physical effects such as diffusion, capillary action and surface adsorption.

[0026] As a technical optimization solution of the present invention, the angle of the thread angle on the thread 6 is smaller than the angle of the inclination of the limiting tooth 10;

[0027] From the above description, it can be seen that this angle design enables the upper washer 8 and the lower washer 9 to produce a wedge effect under the fixing nut 7, does not rely on friction, has more reliable shock resistance, and the disassembly method is the same as normal nuts and bolts.

[0028] As a technical optimization solution of the present invention, a chamfer 13 is provided on the inner connecting pipe 2;

[0029] As can be seen from the above description, the design of the chamfer 13 can facilitate the connection of the external hydraulic pipe and is more convenient when inserting each other.

[0030] As a technical optimization solution of the present invention, the inner diameters of the upper washer 8 and the lower washer 9 are larger than the outer diameter of the outer protective tube 3;

[0031] It can be seen from the above description that such a size design can avoid the influence of the upper gasket 8 and the lower gasket 9 on the external protective tube 3.

[0032] Working principle:

[0033] Insert the external hydraulic pipe into the gap between the internal connecting pipe 2 and the outer protective pipe 3. After the insertion is completed, rotate the fixing nut 7 to tighten the separated outer protective pipe 3 so that the hydraulic pipe is effectively connected. During the process of rotating the fixing nut 7 to the bottom, the upper washer 8 and the lower washer 9 will slowly approach each other and achieve the final fit through the limiting teeth 10, which can effectively prevent the fixing nut 7 from loosening after encountering vibration; after the fixing is completed, the internal water-swelling rubber sealing ring 12 will also provide sufficient sealing, and even if there is a slight leakage, it can be quickly blocked.

[0034] The above description of the present invention and its embodiments is non-limiting. The specific embodiments shown in the specific embodiments are only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without creatively designing a structure and embodiment similar to the technical solution, they shall fall within the scope of protection of the present invention.

Claims

1. A leak-proof hydraulic pipe joint assembly, comprising a connecting pipe body, characterized in that: The connecting tube body is symmetrically and fixedly connected with an inner connecting tube, and the connecting tube body is symmetrically provided with an outer protective tube corresponding to the inner connecting tube, the outer protective tube is provided with an opening, a partition is fixedly connected to the outer protective tube, the outer side of the outer protective tube is provided with a thread, the outer protective tube is provided with a fixing nut through the thread, an upper washer and a lower washer are slidably connected on the outer protective tube between the partition and the fixing nut, and limiting teeth are provided between the upper washer and the lower washer.

2. The leak-proof hydraulic pipe joint assembly according to claim 1, characterized in that: The connecting pipe body is provided with a bellows.

3. The leak-proof hydraulic pipe joint assembly according to claim 1, characterized in that: A water-expandable rubber sealing ring is fixedly installed in the outer protective tube.

4. The leak-proof hydraulic pipe joint assembly according to claim 1, characterized in that: The angle of the thread angle on the thread is smaller than the inclination angle of the limiting tooth.

5. The leak-proof hydraulic pipe joint assembly according to claim 1, characterized in that: The inner connecting pipe is provided with a chamfer.

6. The leak-proof hydraulic pipe joint assembly according to claim 1, characterized in that: The inner diameters of the upper washer and the lower washer are larger than the outer diameter of the outer protective tube.

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