Hydraulic pipe joint with sealing layer

Abstract

The utility model discloses a hydraulic pipe joint with a sealing layer, which comprises two joint main bodies, the joint main bodies are connected through a connecting pipe, the outer sides of the joint main bodies are fixedly connected with sleeves, the outer sides of the sleeves are provided with external threads and are in threaded connection with nuts, and the nuts are in threaded connection with the connecting pipe. A first sealing ring is embedded in the end, away from the connecting pipe, of the connector body, a third sealing ring arranged on the outer side of the sleeve in a sleeving mode is arranged on the side, close to the first sealing ring, of the nut, and a second sealing ring is embedded in the side, close to the first sealing ring, of the sleeve. By means of the structure, when the liquid pipeline connector is connected with the connector body, all the sealing pieces are compressed, so that firm and sealed connection is formed, and liquid leakage is effectively prevented; the installation process is simple and convenient, the excellent sealing effect is achieved, and the safety and reliability of a hydraulic system are improved; and the flexibility of the connecting pipe can facilitate the adjustment of the position between the joint main bodies, so that the joint can be more conveniently connected with a hydraulic pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic pipe joints, in particular to a hydraulic pipe joint with a sealing layer. Background Art

[0002] Hydraulic systems are widely used in engineering machinery, aerospace, automotive manufacturing, and other fields. Hydraulic pipe fittings are a crucial component of hydraulic systems. Their primary function is to connect hydraulic pipes to achieve fluid transmission and pressure transfer. Therefore, the design and performance of hydraulic pipe fittings directly affect the safety and efficiency of the entire system.

[0003] A search of the prior art revealed a Chinese patent application for a "hydraulic pipe joint with a sealing layer," with application number 202420126212.3. This patent primarily includes a main pipe, a threaded ring fixedly connected to the inner wall of the main pipe, the inner thread of which is threadedly connected to a threaded barrel. The inner wall of the threaded barrel is connected to a secondary pipe via a bearing, and a sealing plug is sleeved onto the outer surface of the secondary pipe. The outer wall of the sealing plug conforms to the inner wall of the main pipe. While this utility model patent employs a sealing plug and a sealing ring to seal the connection between the main and secondary pipes, as well as the connection between the hydraulic pipe joint and the joint body, it is relatively simple because only a single sealing plug is provided at the sliding point between the main and secondary pipes, and the connection between the joint body and the hydraulic pipe connector relies on a single sealing ring to form a single-layer seal. Due to the potential impact of temperature changes, pressure fluctuations, and mechanical vibration during operation, a single sealing plug may struggle to maintain its sealing performance in high-pressure environments and frequent pressure fluctuations. Over time, the sealing plug may wear, age, or deform, leading to leakage, thereby impacting the overall efficiency and safety of the hydraulic system. Therefore, the present invention provides a hydraulic pipe joint with a sealing layer to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a hydraulic pipe joint with a sealing layer. When the hydraulic pipe connector is connected to the joint body, each seal is compressed to form a firm and sealed connection, thereby effectively preventing liquid leakage; not only is the installation process simple, but also an excellent sealing effect is achieved, which is conducive to improving the safety and reliability of the hydraulic system.

[0005] To achieve the above-mentioned purpose, a hydraulic pipe joint with a sealing layer is provided, comprising two joint bodies, the joint bodies being connected by a connecting pipe, the outer sides of the joint bodies being fixedly connected to a sleeve, the outer sides of the sleeves being provided with an external thread and being threadedly connected to a nut, the ends of the joint bodies away from the connecting pipes being embedded with a first sealing ring, the side of the nut close to the first sealing ring being provided with a third sealing ring sleeved on the outer side of the sleeve, and the side of the sleeve close to the first sealing ring being embedded with a second sealing ring.

[0006] According to the hydraulic pipe joint with a sealing layer, the connecting pipe is configured as a hose.

[0007] According to the hydraulic pipe joint with a sealing layer, a serrated portion is formed on the side of the first sealing ring close to the joint body, and a fourth sealing ring is provided on the side of the joint body close to the corresponding serrated portion, and the fourth sealing ring is configured as a serrated structure that cooperates with the serrated portion.

[0008] According to the hydraulic pipe joint with a sealing layer, a heat-insulating sleeve is provided on the outside of the connecting pipe.

[0009] According to the hydraulic pipe joint with a sealing layer, the joint body has an external thread structure.

[0010] According to the hydraulic pipe joint with a sealing layer, the first sealing ring, the second sealing ring, the third sealing ring and the fourth sealing ring are all made of polyurethane or fluororubber material.

[0011] The utility model has the following beneficial effects:

[0012] Compared with the existing technology, this hydraulic pipe joint with a sealing layer compresses each seal when connected to the joint body through the liquid pipeline connector, thereby forming a firm and sealed connection, effectively preventing liquid leakage; not only is the installation process simple, but it also achieves excellent sealing effect, which is beneficial to improving the safety and reliability of the hydraulic system.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is a schematic diagram of the overall structure of a hydraulic pipe joint with a sealing layer according to the utility model;

[0016] Figure 2This is a schematic diagram of the overall cross-sectional structure of a hydraulic pipe joint with a sealing layer according to the present invention;

[0017] Figure 3 This is a schematic diagram of the disassembled structure of a hydraulic pipe joint with a sealing layer according to the utility model;

[0018] Figure 4 This utility model is a hydraulic pipe joint with a sealing layer Figure 2 Enlarged structural diagram at point A in the middle.

[0019] Legend:

[0020] 1. Connector body; 2. Sleeve; 3. Nut; 4. First sealing ring; 5. Second sealing ring; 6. Third sealing ring; 7. Connecting pipe; 8. Insulation sleeve; 9. Serrated part; 10. Fourth sealing ring. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0022] Reference Figure 1-4 The present invention provides a hydraulic pipe joint with a sealing layer, comprising two joint bodies 1. The joint bodies 1 have an external thread structure. The outer sides of the joint bodies 1 adopt a standardized thread structure to facilitate a secure connection with the hydraulic pipeline, making installation and disassembly more convenient. The joint bodies 1 are connected by a connecting pipe 7. The outer sides of the joint bodies 1 are fixedly connected to a sleeve 2. The outer sides of the sleeves 2 are provided with external threads and are threadedly connected to nuts 3. The ends of the joint bodies 1 away from the connecting pipe 7 are embedded with a first sealing ring 4. The side of the nut 3 near the first sealing ring 4 is provided with a third sealing ring 6 sleeved on the outer side of the sleeve 2. The side of the sleeve 2 near the first sealing ring 4 is embedded with a second sealing ring 5.

[0023] When two hydraulic pipes need to be connected, the hydraulic pipes are screwed together with the connector body 1, and the connection of the hydraulic system can be completed by connecting the connecting pipe 7. The connector of the hydraulic pipe compresses the first sealing ring 4, forming a preliminary sealing effect at the connection; after the connector of the hydraulic pipe is screwed together and contacts the sleeve 2, the second sealing ring 5 can be compressed to enhance the sealing of the connection; then, the nut 3 is screwed to contact the connector of the hydraulic pipe. The nut 3 can better tighten the connector of the hydraulic pipe, ensuring the stability of the connection between the connector body 1 and the hydraulic pipe connector, and the third sealing ring 6 is compressed at the connection, which can further enhance the sealing, thereby forming a firm and sealed connection, effectively preventing liquid leakage. Not only is the installation process simple, but it also achieves an excellent sealing effect, which is conducive to improving the safety and reliability of the hydraulic system.

[0024] The connecting pipe 7 is designed as a hose. Its good flexibility allows for easy adjustment of the position between the two joint bodies 1, making it easier to connect to the hydraulic pipeline. An insulating sleeve 8 is provided on the outside of the connecting pipe 7 to effectively maintain the temperature of the hydraulic oil in the pipe and prevent performance degradation caused by temperature changes.

[0025] In order to further improve the sealing performance, the first sealing ring 4 is formed with a serrated portion 9 on the side close to the joint body 1, and the joint body 1 is provided with a fourth sealing ring 10 on the side close to the corresponding serrated portion 9, and the fourth sealing ring 10 is set to a serrated structure that cooperates with the serrated portion 9.

[0026] When the hydraulic pipe is connected to the joint body 1, the serrated portion 9 of the first sealing ring 4 cooperates with the serrated fourth sealing ring 10 to form a tighter sealing barrier, effectively preventing liquid leakage and further improving the sealing performance.

[0027] The first sealing ring 4, the second sealing ring 5, the third sealing ring 6 and the fourth sealing ring 10 are all made of polyurethane or fluororubber materials. Polyurethane or fluororubber has good oil resistance and high temperature resistance, and has excellent sealing performance, ensuring that the seals are used under high pressure and can also resist the corrosion of hydraulic oil, thereby extending the service life of the joint.

[0028] Working principle: When two hydraulic pipes need to be connected, the hydraulic pipe is screwed together with the joint body 1, and the connection of the hydraulic system can be completed by connecting the connecting pipe 7. The connector of the hydraulic pipe compresses the first sealing ring 4 to form a preliminary sealing effect at the connection; after the connector of the hydraulic pipe is screwed together and contacts the sleeve 2, the second sealing ring 5 can be compressed to enhance the sealing of the connection; then, the nut 3 is screwed to contact the connector of the hydraulic pipe. The nut 3 can better tighten the connector of the hydraulic pipe to ensure the stability of the connection between the joint body 1 and the hydraulic pipe connector, and the third sealing ring 6 is compressed at the connection to further enhance the sealing, thereby forming a firm and sealed connection, effectively preventing liquid leakage. Not only is the installation process simple, but it also achieves an excellent sealing effect, which is beneficial to improving the safety and reliability of the hydraulic system.

[0029] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A hydraulic pipe joint with a sealing layer, characterized in that: The invention comprises two joint bodies (1), wherein the joint bodies (1) are connected via a connecting pipe (7), the outer sides of the joint bodies (1) are fixedly connected to a sleeve (2), the outer sides of the sleeves (2) are provided with external threads and are threadedly connected to a nut (3), the ends of the joint bodies (1) away from the connecting pipe (7) are embedded with a first sealing ring (4), the side of the nut (3) close to the first sealing ring (4) is provided with a third sealing ring (6) sleeved on the outer side of the sleeve (2), and the side of the sleeve (2) close to the first sealing ring (4) is embedded with a second sealing ring (5).

2. A hydraulic pipe joint with a sealing layer according to claim 1, characterized in that: The connecting pipe (7) is configured as a hose.

3. The hydraulic pipe joint with a sealing layer according to claim 2, characterized in that: The first sealing ring (4) is formed with a serrated portion (9) on one side close to the joint body (1), and the joint body (1) is provided with a fourth sealing ring (10) on one side close to the corresponding serrated portion (9), and the fourth sealing ring (10) is configured as a serrated structure that cooperates with the serrated portion (9).

4. The hydraulic pipe joint with a sealing layer according to claim 3, characterized in that: A heat-insulating sleeve (8) is provided on the outside of the connecting pipe (7).

5. The hydraulic pipe joint with a sealing layer according to claim 4, characterized in that: The joint body (1) has an external thread structure.

6. The hydraulic pipe joint with a sealing layer according to claim 5, characterized in that: The first sealing ring (4), the second sealing ring (5), the third sealing ring (6) and the fourth sealing ring (10) are all made of polyurethane or fluororubber material.

Images