One-way quick connect pneumatic fitting

Abstract

The utility model discloses a one -way fast plug pneumatic connector, including the joint body, the first step department and second step department are equipped in the joint body inside, the first end fixedly connected with fixed sleeve of joint body, fixed sleeve and first step department between are equipped with elastic snap ring, pressure ring, sealing ring and inner baffle in proper order, elastic snap ring is used for clamping tightly and inserts into the connector body's connector, and pressure ring is used for the edge of elastic snap ring and is pressed to fixed sleeve, sealing ring is used for the outer wall sealing of inserting into the connector body's connector, the fixed sleeve is axially slidably sleeved with the unlocking sleeve, and the unlocking sleeve can prop open elastic snap ring to release the connector, and the second step department sets up in the second end of joint body, and the inner baffle is equipped with one -way valve subassembly between the second step department, not only simple structure, good sealing performance, still have fluid working circuit control function, have improved system use efficiency and safe control.

Description

Technical Field

[0001] This utility model relates to the technical field of pneumatic connectors, and in particular to a one-way quick-connect pneumatic connector. Background Technology

[0002] Pneumatic quick-connect couplings are a very convenient plug-and-play connection method for pipeline connections, widely used in pneumatic and other automation fields. However, existing pneumatic couplings still have the following problems: 1. Complex internal structure and large size; 2. Poor sealing performance; 3. Requires a separate one-way valve to control the direction of the medium. Therefore, it is necessary to improve existing pneumatic couplings. Utility Model Content

[0003] The purpose of this invention is to provide a one-way quick-connect pneumatic connector that is not only simple in structure and has excellent sealing performance, but also has a fluid working circuit control function, which improves the system's efficiency and safety control.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a one-way quick-connect pneumatic connector, comprising a connector body, the connector body having a first step and a second step inside, a fixed sleeve fixedly connected to the first end of the connector body, an elastic retaining ring, a pressure ring, a sealing ring and an inner stop block sequentially provided between the fixed sleeve and the first step, the elastic retaining ring being used to clamp the pipe inserted into the connector body, the pressure ring being used to press the edge of the elastic retaining ring to the fixed sleeve, the sealing ring being used to seal the outer wall of the pipe inserted into the connector body, an unlocking sleeve being axially slidably fitted on the fixed sleeve, pressing the unlocking sleeve can open the elastic retaining ring to release the pipe, the second step being provided at the second end of the connector body, and a one-way valve assembly being provided between the inner stop block and the second step.

[0005] Furthermore, the one-way valve assembly includes a piston, a sealing ring, and an elastic element. The piston is placed in the connector body in the forward direction. The sealing ring is disposed on the outer periphery of the first end of the piston. The elastic element is disposed between the piston and the second step portion, so that the piston tends to seal the passage of the inner stop block.

[0006] Furthermore, the one-way valve assembly includes a piston, a sealing ring, and an elastic element. The piston is placed in reverse within the connector body. The sealing ring is disposed on the outer periphery of the first end of the piston. The elastic element abuts against the piston and the inner stop block, so that the piston tends to seal the passage opening at the second end of the connector body.

[0007] Furthermore, the piston is provided with a mounting cavity with a second end opening, and the piston peripheral wall is provided with a vent hole communicating with the mounting cavity, and the elastic element is partially housed in the mounting cavity.

[0008] Furthermore, the piston includes a small section and a large section formed at the lower end of the small section. The large section slides in conjunction with the inner wall of the connector body. The elastic element abuts against the large section, and the sealing ring is installed on the small section.

[0009] Furthermore, an O-ring is provided between the outer periphery of the inner stop block and the inner cavity wall of the connector body.

[0010] Furthermore, the sealing ring has an inner ring groove at one end adjacent to the pressure ring, and the pressure ring has a flange that matches the inner ring groove. The flange is fitted into the inner ring groove to axially position the pressure ring and the sealing ring.

[0011] Furthermore, the inner end of the unlocking sleeve is radially protruding with an outward protrusion, and the fixing sleeve is provided with a limiting part that cooperates with the outward protrusion for limiting.

[0012] Furthermore, the elastic retaining ring is provided with an annular skeleton, and retaining feet are evenly distributed circumferentially on the annular skeleton, and the pressure ring is provided with space for the retaining feet to open.

[0013] In summary, this utility model has the following beneficial effects: This utility model of a one-way quick-connect pneumatic connector not only has a simple structure and excellent sealing performance, but also has a fluid working circuit control function. Specifically, through integrated design, it solves the system's requirement for accurate control of the fluid working circuit, greatly reduces the space required for components, and eliminates the need for users to connect a separate directional control component, thus greatly simplifying the piping system. It is particularly suitable for scenarios with high space requirements, improving system efficiency and safety control. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the one-way valve assembly of this utility model when it is installed in the forward direction.

[0015] Figure 2 This is a schematic diagram of the elastic retaining ring of this utility model.

[0016] Figure 3 This is a schematic diagram of the one-way valve assembly of this utility model when installed in reverse.

[0017] In the diagram: 10. Connector body; 11. First step; 12. Second step; 20. Fixing sleeve; 21. Limiting part; 30. Elastic retaining ring; 31. Annular skeleton; 32. Clamping foot; 40. Pressure ring; 41. Flange; 50. Sealing ring; 51. Inner ring groove; 60. Inner stop block; 70. Unlocking sleeve; 71. Outer protrusion; 80. One-way valve assembly; 81. Piston; 811. Vent hole; 82. Sealing ring; 83. Elastic element; 90. O-ring. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] like Figures 1-3 As shown, a one-way quick-connect pneumatic connector includes a connector body 10. The connector body 10 has a first step portion 11 and a second step portion 12 inside. A fixing sleeve 20 is fixedly connected to the first end of the connector body 10. The fixing sleeve 20 is preferably made of zinc. Specifically, the fixing sleeve 20 is preferably riveted to the connector body 10. An elastic retaining ring 30, a pressure ring 40, a sealing ring 50, and an inner stop block 60 are arranged sequentially between the fixing sleeve 20 and the first step portion 11. The elastic retaining ring 30 is used to clamp the pipe inserted into the connector body 10. The pressure ring 40 is used to press the edge of the elastic retaining ring 30 to the fixing sleeve 20. The sealing ring 50 is used to seal the outer wall of the pipe inserted into the connector body 10. An unlocking sleeve 70 is axially slidably fitted on the fixing sleeve 20. Pressing the unlocking sleeve 70 can open the elastic retaining ring 30 to release the pipe. The second step portion 12 is located at the second end of the connector body 10. A one-way valve assembly 80 is arranged between the inner stop block 60 and the second step portion 12.

[0022] In some embodiments, the one-way valve assembly 80 includes a piston 81, a sealing ring 82, and an elastic element 83. The piston 81 is placed orthogonally within the connector body 10. The sealing ring 82 is disposed on the outer periphery of the first end of the piston 81. The elastic element 83 abuts against the piston 81 and the second step portion 12, so that the piston 81 tends to seal the passage opening of the inner stop block 60. In this embodiment, when air is supplied from the first end of the connector body 10 to its second end, the medium passage can be opened; when air is supplied from the second end of the connector body 10 to its first end, the medium passage is closed by the one-way valve assembly 80.

[0023] In some embodiments, the one-way valve assembly 80 includes a piston 81, a sealing ring 82, and an elastic element 83. The piston 81 is positioned in reverse within the connector body 10. The sealing ring 82 is disposed on the outer periphery of the first end of the piston 81. The elastic element 83 abuts against the piston 81 and the inner stop block 60, so that the piston 81 tends to seal the passage opening at the second end of the connector body 10. In this embodiment, when air is supplied from the first end of the connector body 10 to its second end, the medium passage is blocked by the one-way valve assembly 80; when air is supplied from the second end of the connector body 10 to its first end, the medium passage can be opened.

[0024] In some embodiments, the piston 81 is provided with a mounting cavity with a second end opening, and the peripheral wall of the piston 81 is provided with a vent hole 811 communicating with the mounting cavity. The elastic member 83 is partially accommodated in the mounting cavity, and there are multiple vent holes 811 arranged circumferentially around the piston 81.

[0025] In some embodiments, the piston 81 includes a small section and a large section formed at the lower end of the small section. The large section slides with the inner wall of the connector body 10, making the axial movement of the piston 81 smoother. The elastic element 83 abuts against the large section, and the sealing ring 82 is installed on the small section.

[0026] In some embodiments, an O-ring 90 is provided between the outer periphery of the inner stop block 60 and the inner wall of the connector body 10.

[0027] In some embodiments, the sealing ring 50 has an inner ring groove 51 at one end adjacent to the pressure ring 40, and the pressure ring 40 has a flange 41 that is adapted to the inner ring groove 51. The flange 41 is fitted into the inner ring groove 51 to axially position the pressure ring 40 and the sealing ring 50. During installation, the sealing ring 50 and the pressure ring 40 can be fixed together first, and then the fixed sealing ring 50 and the pressure ring 40 can be installed into the connector body 10.

[0028] In some embodiments, the inner end of the unlocking sleeve 70 is radially provided with an outward protrusion 71, and the fixing sleeve 20 is provided with a limiting part 21 that cooperates with the outward protrusion 71. The limiting part 21 and the outward protrusion 71 are provided to prevent the unlocking sleeve 70 from detaching from the connector body 10.

[0029] In some embodiments, the elastic retaining ring 30 is provided with an annular skeleton 31, and retaining feet 32 ​​are evenly distributed circumferentially on the annular skeleton 31. The pressure ring 40 is provided with space for the retaining feet 32 ​​to open. The retaining feet 32 ​​securely clamp the positioning tube. The material of the elastic retaining ring 30 is preferably 301 stainless steel.

[0030] In summary, this utility model has the following beneficial effects: This utility model of a one-way quick-connect pneumatic connector not only has a simple structure and excellent sealing performance, but also has a fluid working circuit control function. Specifically, through integrated design, it solves the system's requirement for accurate control of the fluid working circuit, greatly reduces the space required for components, and eliminates the need for users to connect a separate directional control component, thus greatly simplifying the piping system. It is particularly suitable for scenarios with high space requirements, improving system efficiency and safety control.

[0031] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A one-way quick-connect pneumatic connector, characterized in that: The connector body (10) includes a first step (11) and a second step (12) inside. A fixing sleeve (20) is fixedly connected to the first end of the connector body (10). An elastic retaining ring (30), a pressure ring (40), a sealing ring (50), and an inner stop (60) are sequentially provided between the fixing sleeve (20) and the first step (11). The elastic retaining ring (30) is used to clamp the pipe inserted into the connector body (10), and the pressure ring (40) is used to hold the elastic retaining ring in place. The edge of the retaining ring (30) is pressed to the fixing sleeve (20). The sealing ring (50) is used to seal the outer wall of the pipe inserted into the connector body (10). The fixing sleeve (20) is axially slidably fitted with an unlocking sleeve (70). Pressing the unlocking sleeve (70) can open the elastic retaining ring (30) to release the pipe. The second step (12) is provided at the second end of the connector body (10). A one-way valve assembly (80) is provided between the inner stop block (60) and the second step (12).

2. The one-way quick-connect pneumatic connector according to claim 1, characterized in that: The one-way valve assembly (80) includes a piston (81), a sealing ring (82), and an elastic element (83). The piston (81) is placed inside the connector body (10) facing forward. The sealing ring (82) is disposed on the outer periphery of the first end of the piston (81). The elastic element (83) abuts against the piston (81) and the second step portion (12) so that the piston (81) tends to seal the passage of the inner stop block (60).

3. A one-way quick-connect pneumatic connector according to claim 1, characterized in that: The one-way valve assembly (80) includes a piston (81), a sealing ring (82), and an elastic element (83). The piston (81) is placed in reverse inside the connector body (10). The sealing ring (82) is disposed on the outer periphery of the first end of the piston (81). The elastic element (83) abuts against the piston (81) and the inner stop block (60) so that the piston (81) tends to seal the passage opening at the second end of the connector body (10).

4. A one-way quick-connect pneumatic connector according to claim 2 or 3, characterized in that: The piston (81) is provided with a mounting cavity with a second end opening, and the peripheral wall of the piston (81) is provided with a vent hole (811) communicating with the mounting cavity. The elastic element (83) is partially housed in the mounting cavity.

5. A one-way quick-connect pneumatic connector according to claim 4, characterized in that: The piston (81) includes a small section and a large section formed at the lower end of the small section. The large section slides in conjunction with the inner wall of the connector body (10). The elastic element (83) abuts against the large section, and the sealing ring (82) is installed on the small section.

6. A one-way quick-connect pneumatic connector according to claim 1, characterized in that: An O-ring (90) is provided between the outer periphery of the inner stop block (60) and the inner wall of the connector body (10).

7. A one-way quick-connect pneumatic connector according to claim 1, characterized in that: The sealing ring (50) has an inner ring groove (51) at one end adjacent to the pressure ring (40). The pressure ring (40) has a flange (41) that matches the inner ring groove (51). The flange (41) is fitted into the inner ring groove (51) to axially position the pressure ring (40) and the sealing ring (50).

8. A one-way quick-connect pneumatic connector according to claim 1, characterized in that: The inner end of the unlocking sleeve (70) is radially protruding with an outward protrusion (71), and the fixing sleeve (20) is provided with a limiting part (21) that cooperates with the outward protrusion (71).

9. A one-way quick-connect pneumatic connector according to claim 1, characterized in that: The elastic retaining ring (30) is provided with an annular skeleton (31), and retaining feet (32) are evenly distributed around the annular skeleton (31). The pressure ring (40) is provided with space for the retaining feet (32) to open.

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