Self-pressing sealing rotary joint

Abstract

The utility model provides a self-pressure sealing rotary joint, which belongs to the technical field of rotary joints and structurally comprises a shell, a rotary core piece is sleeved in the middle of a cavity of the shell, and a first sealing component and a second sealing component are flexibly sealed and propped against gaps on the left side and the right side between the shell and the rotary core piece. A driving end is arranged at the tail of the left end of the rotary core piece, and through the self-pressure sealing design of a first sealing assembly and a second sealing assembly which are composed of a pressure plate piece, a sealing piece and a spring in gaps in the left side and the right side between the shell and the rotary core piece, after the rotary core piece is driven by the driving end to rotate for a period of time, an inner ring of a sealing ferrule on the sealing piece is abraded, and the sealing ferrule is sealed. Self-pressure is provided for the sealing ferrule all the time through the spring, the sealing ferrule can have the self-pressure all the time to generate deformation for self-pressure sealing, the sealing function can be effectively achieved all the time after the sealing ferrule is abraded, the problem of leakage of the left side and the right side cannot occur after the rotary joint is used for a long time, and practicability is high.

Description

Technical Field

[0001] This utility model relates to a self-pressurized sealing rotary joint, belonging to the field of rotary joint technology. Background Technology

[0002] Rotary joints are needed in concrete feeding equipment to swing and turn the feeding pipe inside the equipment.

[0003] However, the sealing ring between the outer shell and the rotating core in the existing rotary joint does not have a self-pressure sealing function. Therefore, after the rotating core has been used for a period of time, the inner ring of the sealing ring will wear, causing leakage at the sealing ring between the outer shell and the rotating core. In order to address the above shortcomings, this utility model proposes a self-pressure sealing rotary joint. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a self-pressurized sealing rotary joint to solve the existing problems.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a self-pressurized sealing rotary joint, the structure of which includes a shell, and a rotating core is sleeved in the middle of the shell cavity. The gaps on the left and right sides between the shell and the rotating core are softly sealed and abutted by a first sealing component and a second sealing component. A driving end is provided at the left end of the rotating core.

[0006] The first sealing assembly includes a pressure plate and a sealing element. A spring is sleeved between the pressure plate and the sealing element to provide self-pressure sealing. The first sealing assembly and the second sealing assembly have the same structure.

[0007] A further improvement is that a rotating core sleeve cavity is formed through the middle of the right side of the outer shell, and a first sealing groove and a second sealing groove are formed on the left and right sides of the rotating core sleeve cavity. A first feeding groove is formed in the middle of the rotating core sleeve cavity, and a feeding port is formed through the middle of the lower end of the first feeding groove. A first external thread and a second external thread are formed on the outer periphery of the left and right sides of the outer shell.

[0008] A further improvement is that the rotating core includes a rotating core body, and a second feeding groove connected to the first feeding groove is opened around the middle of the rotating core body. The upper end of the second feeding groove is opened to the right to form a discharge channel. Two bearings are sleeved on the left and right sides of the rotating core body, and soft sleeves are sleeved on the top surface of the two bearings. An anti-detachment block is movably abutted against the lower end of the left side of the left bearing.

[0009] A further improvement is that a through cavity is provided in the middle of the left side of the pressure plate, and a sleeve cavity and a first spring latch are provided around the left side of the pressure plate. An internal thread is provided on the top surface of the sleeve cavity, and an abutment is provided in the middle of the sleeve cavity.

[0010] A further improvement is that the sealing element is composed of a sealing ring and a pressure plate, and a second spring latch is provided on the right side of the pressure plate. The sealing ring is made of rubber, and the pressure plate is made of iron.

[0011] A further improvement is that the driving end is based on existing technology, and its structure will not be described in detail here.

[0012] The beneficial effects of the utility model are:

[0013] This utility model provides a self-pressurizing rotary joint. Through a first sealing assembly and a second sealing assembly consisting of a pressure plate, a sealing element, and a spring, a self-pressurizing sealing design is achieved in the gaps on both sides between the outer shell and the rotating core. After the rotating core is driven to rotate for a period of time, causing wear on the inner ring of the sealing ring on the sealing element, the spring continuously provides self-pressure to the sealing ring, allowing it to deform and achieve self-pressurizing sealing. This effectively solves the problem of maintaining a seal even after the sealing ring wears out, ensuring that the rotary joint will not experience leakage on the left or right sides during long-term use, making it highly practical. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a self-pressure sealing rotary joint structure according to the present invention;

[0015] Figure 2 This is a schematic diagram of the outer shell structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the rotating core structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the first sealing component of this utility model;

[0018] Figure 5 This is an enlarged schematic diagram of part A of this utility model. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] Please see Figure 1-5The present invention provides a schematic diagram of a self-pressurizing rotary joint. The structure includes a housing 1, with a rotating core 2 fitted inside the center of the housing 1. A first sealing assembly 3 and a second sealing assembly 4 are provided to flexibly seal the gaps on the left and right sides between the housing 1 and the rotating core 2. A driving end 5 is provided at the left tail of the rotating core 2. The first sealing assembly 3 includes a pressure plate 31 and a sealing element 32. A spring 33 is fitted between the pressure plate 31 and the sealing element 32 to provide self-pressurizing sealing. The first sealing assembly 3 and the second sealing assembly 4 have the same structure.

[0021] A rotating core sleeve cavity 11 is provided through the middle of the right side of the outer shell 1. A first sealing groove 12 and a second sealing groove 13 are provided on the left and right sides of the cavity wall of the rotating core sleeve cavity 11. A first feeding groove 14 is provided in the middle of the cavity wall of the rotating core sleeve cavity 11. A feeding port 15 is provided through the middle of the lower end of the first feeding groove 14. A first external thread 16 and a second external thread 17 are provided on the outer periphery of the left and right sides of the outer shell 1.

[0022] The rotating core 2 includes a rotating core body 21, and a second feeding groove 22 connected to the first feeding groove 14 is opened around the middle of the core body 21. The upper end of the second feeding groove 22 is provided with a discharge channel 23 extending to the right. Two bearings 24 are sleeved on the left and right sides of the rotating core body 21, and a soft sleeve 25 is sleeved on the top surface of the two bearings 24. An anti-detachment block 26 is movably abutted against the lower end of the left side of the left bearing 24.

[0023] The pressure plate component 31 has a through cavity 311 in the middle of its left side surface, and a sleeve cavity 312 and a first spring latch 313 are formed around the left side surface of the pressure plate component 31. The top surface of the sleeve cavity 312 is provided with an internal thread 314, and an abutment 315 is provided in the middle of the sleeve cavity 312.

[0024] The sealing element 32 is formed by the sealing ring 321 and the pressure plate 322 being fitted together. The right side of the pressure plate 322 is provided with a second spring latch 323. The sealing ring 321 is made of rubber and the pressure plate 322 is made of iron.

[0025] Working principle:

[0026] In use, the rotating core 2 is driven to rotate in the rotating core sleeve cavity 11 by the drive end 5, and the two bearings 24 enable the rotating core 2 to rotate stably. During the rotation of the rotating core 2, the raw material can still flow from the feed inlet 15 into the tank chamber formed between the first feed trough 14 and the second feed trough 22 and flow out to the right through the discharge channel 23. Because the two sealing rings 321 seal against the two sides of the tank chamber formed between the first feed trough 14 and the second feed trough 22, the raw material will not leak from the gaps on the left and right sides of the tank chamber.

[0027] After the rotating core 2 has been used for a period of time, the inner rings of the two sealing rings 321 will wear due to friction with the surface of the rotating core 2. The spring 33 provides a squeezing force on the sealing rings 321 so that the two sealing rings 321 can always achieve self-pressure sealing, effectively preventing leakage problems caused by the two sealing rings 321 losing their self-pressure function due to wear.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A self-pressurized rotary joint, characterized in that: Its structure includes an outer shell (1), and a rotating core (2) is sleeved in the middle of the cavity of the outer shell (1). The gaps on the left and right sides between the outer shell (1) and the rotating core (2) are softly sealed by a first sealing component (3) and a second sealing component (4). A driving end (5) is provided at the left end of the rotating core (2). The first sealing assembly (3) includes a pressure plate (31) and a sealing element (32). A spring (33) is sleeved between the pressure plate (31) and the sealing element (32) to achieve self-pressure sealing of the sealing element (32). The first sealing assembly (3) and the second sealing assembly (4) have the same structure.

2. The self-pressurized rotary joint according to claim 1, characterized in that: The right side of the outer shell (1) is provided with a rotating core cavity (11) through the middle. The left and right sides of the rotating core cavity (11) are provided with a first sealing groove (12) and a second sealing groove (13). The middle wall of the rotating core cavity (11) is provided with a first feeding groove (14). The lower middle part of the first feeding groove (14) is provided with a feeding port (15). The outer periphery of the left and right sides of the outer shell (1) is provided with a first external thread (16) and a second external thread (17).

3. The self-pressurized rotary joint according to claim 2, characterized in that: The rotating core (2) includes a rotating core body (21), and a second feeding groove (22) connected to the first feeding groove (14) is provided around the middle of the rotating core body (21). The upper end of the second feeding groove (22) is provided with a discharge channel (23) extending to the right. Two bearings (24) are fitted on the left and right sides of the rotating core body (21), and soft sleeves (25) are fitted on the top surface of the two bearings (24). An anti-detachment block (26) is movable and abuts against the lower end of the left side of one of the bearings (24).

4. A self-pressurizing rotary joint according to claim 3, characterized in that: The pressure plate component (31) has a through cavity (311) in the middle of its left side surface, and a sleeve cavity (312) and a first spring latch (313) are provided around the left side surface of the pressure plate component (31). The top surface of the sleeve cavity (312) is provided with an internal thread (314), and an abutment (315) is provided in the middle of the sleeve cavity (312).

5. A self-pressurizing rotary joint according to claim 4, characterized in that: The sealing element (32) is formed by the sealing ring (321) and the pressure plate (322) being fitted together. The right side of the pressure plate (322) is provided with a second spring latch (323). The sealing ring (321) is made of rubber, and the pressure plate (322) is made of iron.

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