A pneumatic pipe joint

Abstract

This utility model provides a pneumatic pipe connector, belonging to the field of pneumatic pipe connection technology. It includes a connector body, a left plug screwed to the left side of the connector body, a threaded sleeve screwed to the right side of the connector body, a fluid assembly screwed into the inner cavity of the connector body, and a pneumatic pipe body sleeved on the outer side of the fluid assembly. The inner cavity of the connector body is provided with a conical groove and multiple sets of through holes communicating with the conical groove. A sealing component is provided within the conical groove. A locking mechanism is inserted into the outer side of the left plug. This utility model solves the problems of cumbersome connection steps, easy detachment, and easy backflow of external liquid into automated mechanical equipment caused by the insertion of the pneumatic pipe body and fluid assembly, followed by locking and fixing the pneumatic pipe body through the locking mechanism and the designed sealing component.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic pipe connection technology, and in particular to a pneumatic pipe connector. Background Technology

[0002] Pneumatic hoses are a type of material used in the assembly of various pneumatic tools, pneumatic automated machinery, air compressors, and various connecting pneumatic components. They are generally made from PU raw materials, while pneumatic hose fittings are commonly used connectors for pneumatic pipelines in automated mechanical equipment.

[0003] Current pneumatic hose connection technologies often involve cumbersome connection steps for some pneumatic hose fittings, requiring screws for locking. Others employ plug-in structures for quick plate insertion, relying solely on elastic retainers for detachment prevention. When high-pressure airflow enters the hose, this can easily lead to detachment. Furthermore, most pneumatic hose fittings remain connected, allowing external liquids to flow back into the hose, causing malfunctions in automated machinery. Therefore, we provide a pneumatic hose fitting solution to address this problem. Utility Model Content

[0004] To achieve the goal of quickly and securely fastening and preventing detachment of the pneumatic tube and the connector body, and to prevent external liquid from flowing back into the automated mechanical equipment from the connector body, this utility model adopts the following technical solution:

[0005] A pneumatic pipe connector includes a connector body, a left plug screwed to the left side of the connector body, a threaded sleeve screwed to the right side of the connector body, a fluid assembly screwed into the inner cavity of the connector body, a pneumatic pipe body sleeved on the outer side of the fluid assembly, a conical groove provided in the inner cavity of the connector body, multiple sets of through holes communicating with the conical groove in the inner cavity of the connector body, a sealing assembly provided in the inner cavity of the conical groove, and a locking mechanism inserted into the outer side of the left plug;

[0006] The locking mechanism includes a fixed plate located on the left side of the left plug. Support columns are equidistantly connected to one side of the fixed plate. One end of each support column passes through the left plug and is connected to a locking plate. A pressure strip is connected to the outer side of each locking plate. The locking plate and the pressure strip are both located on the outer side of the pneumatic tube body. The left side of the pneumatic tube body passes through the fixed plate and the left plug and extends to their outer side.

[0007] Preferably, the locking mechanism further includes two inserts installed on the right side of the fixed plate. Each insert has a locking hole on its outer side. The left side of the left plug has symmetrically arranged insertion holes corresponding to the positions of the inserts. The inner wall of each insertion hole is provided with a spring groove. A second spring is installed in the inner cavity of each spring groove. One end of each second spring is connected to a locking ball that engages with the locking hole.

[0008] Preferably, the fluid assembly includes a fixing post screwed to the inner wall of the connector body, the fixing post being sleeved with the pneumatic tube body, the outer diameter of the fixing post matching the inner diameter of the pneumatic tube body, the pneumatic tube body being made of flexible hose, a circular hole being provided on the left side of the fixing post, and nozzles communicating with the circular hole being provided at equal intervals on the outer side of the fixing post.

[0009] Preferably, a conical block is integrally connected to the outer side of the fixed column, and an inner ring is integrally connected to the outer side of the conical block.

[0010] Preferably, the inner cavity of the connector body is integrally connected with a mounting ring, the sealing assembly includes a mounting bracket connected to the mounting ring, a fixing post is movably inserted into the middle of the mounting bracket, a sealing plate is connected to one end of the fixing post, a first spring is connected between the sealing plate and the mounting bracket, and the left end and outer side of the sealing plate are in contact with the inner wall of the conical groove.

[0011] Preferably, the inner cavity of the connector body is provided with an annular mounting groove, and a rubber ring and a gasket are installed in the inner cavity of the annular mounting groove, with the gasket located on the right side of the rubber ring.

[0012] Preferably, the inner cavity of the connector body is provided with an annular groove and a sealing groove, a sealing ring is sleeved in the inner cavity of the sealing groove, and a retaining ring that engages with the annular groove is integrally connected to the outer side of the threaded sleeve.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This invention, after the pneumatic tube body is inserted into the fluid component fixing post and the conical block, uses a locking mechanism with four sets of locking plates to firmly push and lock the pneumatic tube body. The pressure strip on the outer side of the locking plates presses against the pneumatic tube body located on the outer side of the conical block, further improving the locking effect. Then, the insertion post on the outer side of the fixing plate is inserted into the insertion hole on the outer side of the left plug. The ball in the spring groove inside the insertion hole engages with the inner cavity of the insertion hole, facilitating the fixing of the insertion post and the fixing plate. This effectively improves the locking effect of the pneumatic tube body and facilitates the disassembly of the locking mechanism, thus solving the problems of cumbersome connection steps and easy detachment between the pneumatic tube body and the connector body.

[0015] This invention, through its designed enclosed component, allows the compressed first spring to automatically reset the sealing plate when the airflow or water flow stops. This causes the sealing plate to once again adhere to the inner wall of the conical groove, effectively preventing fluid from flowing back into the inner cavity of the connector body. This effectively solves the problem of external liquid flowing back into the automated mechanical equipment from the connector body. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the overall semi-sectional three-dimensional structure of the present invention;

[0019] Figure 3 This is a three-dimensional cross-sectional view of the internal structure of a portion of the connector of the present invention;

[0020] Figure 4 This is a schematic diagram of the partially disassembled three-dimensional structure of the present invention;

[0021] Figure 5 This is a three-dimensional structural diagram of the locking mechanism of the present invention;

[0022] Figure 6 For the present invention Figure 5 Enlarged structural diagram of section A;

[0023] Figure 7 This is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.

[0024] Drawing number explanation: 1. Connector body; 2. Left plug; 3. Locking mechanism; 31. Fixing plate; 32. Support column; 33. Locking plate; 34. Pressure strip; 35. Insert post; 36. Snap hole; 4. Threaded sleeve; 5. Pneumatic pipe body; 6. Conical groove; 7. Fluid assembly; 71. Fixing column; 72. Round hole; 73. Spray hole; 74. Conical block; 75. Inner ring; 8. Sealing assembly; 81. Mounting bracket; 82. Fixing shaft; 83. Sealing plate; 84. First spring; 9. Through hole; 10. Mounting ring; 11. Annular snap groove; 12. Annular mounting groove; 13. Sealing groove; 14. Leather ring; 15. Gasket; 16. Sealing ring; 17. Snap ring; 18. Insert hole; 19. Second spring; 20. Snap ball. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings. Example

[0026] Please see Figure 1-3 as well as Figure 5-7A pneumatic pipe connector includes a connector body 1, a left plug 2 screwed to the left side of the connector body 1, a fluid assembly 7 screwed to the inner cavity of the connector body 1, and a pneumatic pipe body 5 sleeved on the outer side of the fluid assembly 7. The fluid assembly 7 includes a fixing post 71 screwed to the inner wall of the connector body 1. The fixing post 71 is sleeved with the pneumatic pipe body 5, and the outer diameter of the fixing post 71 matches the inner diameter of the pneumatic pipe body 5. The pneumatic pipe body 5 is made of flexible hose. A circular hole 72 is provided on the left side of the fixing post 71. Spray holes 73 communicating with the circular hole 72 are provided at equal intervals on the outer side of the fixing post 71. A conical block 74 is integrally connected to the outer side of the fixing post 71, and an inner ring 75 is integrally connected to the outer side of the conical block 74.

[0027] After the pneumatic tube body 5, which matches the size of the fixed column 71, is inserted into the outside of the fixed column 71 through the left plug 2, and the right end of the pneumatic tube body 5 is inserted into the left side of the conical block 74, the pneumatic tube body 5 is pushed. Due to the characteristics of the hose material of the pneumatic tube body 5, its interior expands slightly during the pushing process, so that the right side of the pneumatic tube body 5 expands into a conical shape and wraps around the conical block 74 until the right end of the pneumatic tube body 5 fits against the left side of the inner ring 75, which facilitates the initial insertion and fixation of the pneumatic tube body 5. The fluid is discharged from the mechanical device and then enters the round hole 72 through the pneumatic tube body 5, which is convenient for finally being sprayed out through the nozzle 73.

[0028] A locking mechanism 3 is inserted into the outer side of the left plug 2. The locking mechanism 3 includes a fixed plate 31 located on the left side of the left plug 2. Support columns 32 are equidistantly connected to one side of the fixed plate 31. One end of each support column 32 passes through the left plug 2 and is connected to a locking plate 33. A pressure strip 34 is connected to the outer side of each locking plate 33. Both the locking plate 33 and the pressure strip 34 are located on the outer side of the pneumatic tube body 5. The left side of the pneumatic tube body 5 passes through the fixed plate 31 and the left plug 2 and extends to its outer side.

[0029] The locking mechanism 3 also includes two inserts 35 installed on the right side of the fixed plate 31. Each insert 35 has a locking hole 36 on its outer side. The left side of the left plug 2 has symmetrically arranged insertion holes 18 corresponding to the positions of the inserts 35. The inner wall of each insertion hole 18 is provided with a spring groove. A second spring 19 is installed in the inner cavity of each spring groove. One end of each second spring 19 is connected to a locking ball 20 that engages with the locking hole 36.

[0030] After the pneumatic tube body 5 is inserted tightly between the fixed post 71, the fixed plate 31 of the locking mechanism 3 is pushed. The fixed plate 31 drives the support post 32 to push the four sets of locking plates 33 to the left connection point of the fixed post 71 and the conical block 74. Since the conical block 74 has a conical arc, it blocks the further movement of the locking plates 33. The pneumatic tube body 5 is sleeved on the outside of the left connection point of the fixed post 71 and the conical block 74. By pushing the locking plates 33, the four sets of locking plates 33, which are in close contact with the outside of the pneumatic tube body 5, firmly lock and fix the pneumatic tube body 5. The pressure strip 34 on the outside of the locking plates 33 presses the pneumatic tube body 5 located outside the conical block 74, further improving the locking and fixing effect of the pneumatic tube body 5. Then the right side of the fixed plate 31... The insertion post 35 is inserted into the insertion hole 18 on the outside of the left plug 2. After entering the insertion hole 18, the insertion post 35 pushes the retaining ball 20, thereby compressing the second spring 19 into the inner cavity of the spring groove. Then, as the insertion post 35 continues to be inserted, the retaining hole 36 on the outside of the insertion post 35 moves to correspond to the position of the retaining ball 20. Then, the second spring 19 releases its rebound force, thereby driving the retaining ball 20 to move in the opposite direction and lock into the inner cavity of the retaining hole 36. This facilitates the fixation of the insertion post 35 and the fixing plate 31, thereby effectively improving the locking and fixing effect of the pneumatic tube body 5. It also facilitates the quick insertion of the pneumatic tube body 5 into the fixing post 71, and then locks and fixes the pneumatic tube body 5 through the push locking mechanism 3, effectively improving the use effect of this pneumatic tube connector.

[0031] Please see Figure 2-3 The inner cavity of the connector body 1 is provided with a conical groove 6. The inner cavity of the connector body 1 is provided with multiple sets of through holes 9 that communicate with the conical groove 6. The inner cavity of the conical groove 6 is provided with a sealing component 8. The inner cavity of the connector body 1 is integrally connected with a mounting ring 10. The sealing component 8 includes a mounting bracket 81 connected to the mounting ring 10. A fixed shaft 82 is movably inserted into the middle of the mounting bracket 81. One end of the fixed shaft 82 is connected to a sealing plate 83. A first spring 84 is connected between the sealing plate 83 and the mounting bracket 81. The left end and the outer side of the sealing plate 83 are in contact with the inner wall of the conical groove 6.

[0032] When high-pressure air or water is ejected from nozzle 73, the pressure inside the connector body 1 gradually increases. As a result, the air or water enters through through hole 9 and pushes the sealing plate 83. The sealing plate 83 compresses the first spring 84 and moves the fixed shaft 82, facilitating the air or water to enter the inner cavity of the conical groove 6 through through hole 9 and then exit from the right side of the connector body 1. When the air or water supply stops, the compressed first spring 84 causes the sealing plate 83 to automatically reset, so that the sealing plate 83 once again comes into contact with the inner wall of the conical groove 6. This prevents external liquid from flowing back into the automated mechanical equipment from the connector body 1 and causing equipment failure, effectively improving the performance of this pneumatic pipe connector.

[0033] Please see Figure 1-4 The right side of the connector body 1 is screwed with a threaded sleeve 4. The inner cavity of the connector body 1 is provided with an annular mounting groove 12. A rubber ring 14 and a gasket 15 are installed in the inner cavity of the annular mounting groove 12. The gasket 15 is located to the right of the rubber ring 14. The inner cavity of the connector body 1 is provided with an annular retaining groove 11 and a sealing groove 13. A sealing ring 16 is sleeved in the inner cavity of the sealing groove 13. The outer side of the threaded sleeve 4 is integrally connected with a retaining ring 17 that engages with the annular retaining groove 11.

[0034] Before installing the threaded sleeve 4, the rubber ring 14 is first placed into the inner cavity of the annular mounting groove 12, followed by the insertion of the gasket 15 and the fitting of the sealing ring 16 into the inner cavity of the sealing groove 13. Then, the threaded sleeve 4 is rotated and screwed into the right side of the inner cavity of the connector body 1, while the left side of the threaded sleeve 4 pushes the gasket 15. The gasket 15 compresses the rubber ring 14, which effectively improves the installation and sealing firmness of the threaded sleeve 4. The sealing ring 16 fits against the outer side of the threaded sleeve 4, effectively improving the airtightness of the connection between the threaded sleeve 4 and the connector body 1. The retaining ring 17 on the outer side of the threaded sleeve 4 is engaged in the annular retaining groove 11, further improving the airtightness. In use, the threaded sleeve 4 is screwed into other equipment pipes.

[0035] Working principle: In this invention, the pneumatic tube body 5 is inserted into the outside of the fixed post 71. Due to the characteristics of the flexible material of the pneumatic tube body 5, its interior slightly expands during the pushing process, causing a portion of the right side of the pneumatic tube body 5 to conically expand and wrap around the conical block 74 until the right end of the pneumatic tube body 5 is in contact with the left side of the inner ring 75. After the pneumatic tube body 5 is tightly inserted between the fixed post 71, the fixed plate 31 of the locking mechanism 3 is pushed. The fixed plate 31 drives the support post 32 to push the four sets of locking plates 33 to move to the fixed post 71 and the conical block 74. At the left connection point of 4, the conical block 74, with its conical arc, blocks the continued movement of the locking plate 33. This, in turn, pushes the locking plate 33, causing the four sets of locking plates 33 to firmly press and lock the pneumatic tube body 5. Furthermore, the pressure strip 34 on the outer side of the locking plate 33 presses against the pneumatic tube body 5 located outside the conical block 74, further improving the locking effect on the pneumatic tube body 5. Subsequently, the insertion post 35 on the right side of the fixing plate 31 is inserted into the insertion hole 18 on the outer side of the left plug 2. The retaining ball 20 in the spring groove inside the insertion hole 18 engages with the inner cavity of the retaining hole 36, facilitating the insertion post 35 and the fixing plate 31. The locking mechanism 3 is used to secure the pneumatic tube body 5, thereby effectively improving the locking effect. During disassembly, pulling the fixing plate 31 outwards applies an outward pulling force to the insertion post 35, causing the locking hole 36 on the outside of the insertion post 35 to push the locking ball 20 inside. This, in turn, compresses the second spring 19 into the spring groove, facilitating the disassembly of the locking mechanism 3. Then, pulling the pneumatic tube body 5 outwards allows for quick insertion between the pneumatic tube body 5 and the fixing post 71. The locking mechanism 3 then locks and secures the pneumatic tube body 5, facilitating quick assembly and disassembly, and effectively improving the performance of this pneumatic tube connector. The pneumatic pipe connector is effective in its use. When high-pressure air or water is ejected from the nozzle 73, the air or water enters through the through hole 9 and pushes the sealing plate 83. While compressing the first spring 84, the sealing plate 83 moves away from the conical groove 6, making it easier for the air or water to enter through the through hole 9 and then exit through the conical groove 6. When the air or water supply stops, the compressed first spring 84 drives the sealing plate 83 to automatically reset, so that the sealing plate 83 once again fits against the inner wall of the conical groove 6, preventing external liquid from flowing back from the connector body 1 into the automated mechanical equipment and causing equipment failure. This effectively improves the performance of the pneumatic pipe connector.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pneumatic union, characterized in that include: The connector body (1) has a left plug (2) screwed to its left side and a threaded sleeve (4) screwed to its right side. A fluid assembly (7) is screwed into the inner cavity of the connector body (1). A pneumatic tube body (5) is sleeved on the outer side of the fluid assembly (7). A conical groove (6) is provided in the inner cavity of the connector body (1). A plurality of through holes (9) connected to the conical groove (6) are provided in the inner cavity of the connector body (1). A sealing assembly (8) is provided in the inner cavity of the conical groove (6). A locking mechanism (3) is inserted into the outer side of the left plug (2). The locking mechanism (3) includes a fixed plate (31) located on the left side of the left plug (2). Support columns (32) are equidistantly connected to one side of the fixed plate (31). One end of each support column (32) passes through the left plug (2) and is connected to a locking piece (33). A pressure strip (34) is connected to the outside of each locking piece (33). Both the locking piece (33) and the pressure strip (34) are located on the outside of the pneumatic tube body (5). The left side of the pneumatic tube body (5) passes through the fixed plate (31) and the left plug (2) and extends to its outside.

2. A pneumatic tube coupling according to claim 1, characterized in that: The locking mechanism (3) also includes two inserts (35) installed on the right side of the fixed plate (31). Each insert (35) has a locking hole (36) on its outer side. The left plug (2) has symmetrically arranged insertion holes (18) corresponding to the positions of the inserts (35) on its left side. Each insertion hole (18) has a spring groove on its inner wall. Each spring groove has a second spring (19) installed in its inner cavity. One end of each second spring (19) is connected to a locking ball (20) that engages with the locking hole (36).

3. A pneumatic pipe connector according to claim 2, characterized in that: The fluid assembly (7) includes a fixing post (71) screwed to the inner wall of the connector body (1). The fixing post (71) is sleeved with the pneumatic tube body (5). The outer diameter of the fixing post (71) matches the inner diameter of the pneumatic tube body (5). The pneumatic tube body (5) is made of hose material. A round hole (72) is provided on the left side of the fixing post (71). Spray holes (73) communicating with the round hole (72) are provided at equal intervals on the outer side of the fixing post (71).

4. A pneumatic union according to claim 3, wherein: The outer side of the fixed column (71) is integrally connected to a conical block (74), and the outer side of the conical block (74) is integrally connected to an inner ring (75).

5. A pneumatic union according to claim 1, wherein: The inner cavity of the connector body (1) is integrally connected with a mounting ring (10). The sealing assembly (8) includes a mounting bracket (81) connected to the mounting ring (10). A fixed shaft (82) is movably inserted into the middle of the mounting bracket (81). A sealing plate (83) is connected to one end of the fixed shaft (82). A first spring (84) is connected between the sealing plate (83) and the mounting bracket (81). The left end and the outer side of the sealing plate (83) are in contact with the inner wall of the conical groove (6).

6. A pneumatic union according to claim 1, wherein: The inner cavity of the connector body (1) is provided with an annular mounting groove (12), and a rubber ring (14) and a gasket (15) are installed in the inner cavity of the annular mounting groove (12). The gasket (15) is located on the right side of the rubber ring (14).

7. A pneumatic union according to claim 1, wherein: The inner cavity of the connector body (1) is provided with an annular groove (11) and a sealing groove (13). A sealing ring (16) is sleeved in the inner cavity of the sealing groove (13). The outer side of the threaded sleeve (4) is integrally connected with a retaining ring (17) that engages with the annular groove (11).

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