Pneumatic valve capable of being in butt joint with pipeline conveniently

Abstract

The pneumatic valve comprises a valve body, a liquid inlet end and a liquid outlet end, the liquid inlet end and the liquid outlet end are connected to the two ends of the valve body, the liquid inlet end and the liquid outlet end are connected with a connecting end, the connecting end is matched with a connecting port connected to the end of a connecting pipeline, and the connecting end is connected with a positioning mechanism used for positioning the connecting port. The positioning mechanism comprises a plurality of limiting blocks, a plurality of push columns, a plurality of guide seats and a plurality of springs, the limiting blocks are connected to the ends of the push columns, the guide seats are used for guiding the push columns, the connecting end is connected with a protective sleeve used for driving the limiting blocks to move downwards, and the inner side of the connecting end is connected with a sealing gasket and a sealing face. And the sealing gasket and the sealing surface are connected with the connecting port. The connecting stability and tightness of the connecting port and the connecting end can be improved, butt joint of a connecting pipeline and the valve body is facilitated, operation is easy and convenient, the double-sealing effect is achieved, the hidden danger of medium leakage is avoided, and use is safe and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic valves, in particular to a pneumatic valve which is convenient for connecting with a pipeline. Background Art

[0002] Pneumatic valves utilize compressed air to propel multiple pneumatic pistons within an actuator. This transfers force to the crossbeam and internal curved track, driving the hollow spindle to rotate. Compressed air is delivered to each cylinder, changing the inlet and outlet positions to alter the spindle's rotational direction. The number of cylinders combined can be adjusted to drive the load (valve) based on the required rotational torque. These valves can be used to control the flow of various fluids, including air, water, steam, various corrosive media, mud, oil, liquid metal, and radioactive media.

[0003] When existing pneumatic valves are connected to pipelines, they are usually fixed in the form of multiple bolts and flanges. Tools are needed to operate the bolts, which is time-consuming and labor-intensive, inefficient, and difficult to control the torque of the bolt rotation. If the bolts are tightened too much, thread slippage is likely to occur, resulting in subsequent disassembly errors. If the bolts are tightened too loosely, the connection between the two is weak, which is prone to medium leakage. Utility Model Content

[0004] The purpose of the utility model is to provide a pneumatic valve that is easy to connect with a pipeline, has the advantages of improving the stability and tightness of the connection between the connection port and the connection end, facilitating the connection between the pipeline and the valve body, simple and convenient operation, achieving a double sealing effect, and avoiding the hidden danger of medium leakage, thereby solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pneumatic valve that is easy to connect to a pipeline, comprising a valve body and a liquid inlet end and a liquid discharge end connected to both ends of the valve body, the liquid inlet end and the liquid discharge end are connected to a connecting end, the connecting end matches the connecting port connected to the end of the connecting pipeline, and the connecting end is connected to a positioning mechanism for positioning the connecting port, the positioning mechanism comprises a plurality of limit blocks, a plurality of push columns, a plurality of guide seats, and a plurality of springs, the limit block is connected to the end of the push column, the guide seat is used for guiding the push column, the two ends of the spring are connected to the guide seat and the limit block, the connecting end is connected to a sheath for driving the limit block to move downward, and the inner side of the connecting end is connected to a sealing gasket and a sealing surface, the sealing gasket and the sealing surface are connected to the connecting port.

[0006] Preferably, the positioning mechanism further includes a plurality of inclined surfaces and a plurality of pressing surfaces, the inclined surfaces are arranged at the bottom of the limiting block, and the pressing surfaces are arranged obliquely at the top of the push column.

[0007] Preferably, a plurality of mounting grooves are provided in the connecting end, the guide seat is fixed in the mounting grooves, and the push post is slidably connected to the guide seat.

[0008] Preferably, the limiting block is slidably connected to the mounting slot.

[0009] Preferably, an annular groove matching the sealing gasket is provided in the connecting end, and the sealing gasket is an O-shaped structure.

[0010] Preferably, the sheath is movably connected to the connection end, and the sheath is connected to a bolt for positioning the sheath.

[0011] Preferably, a plurality of guide grooves are provided on the outer side of the connecting end, and a guide block is slidably connected to the guide groove, and the guide block is connected to the inner side of the sheath.

[0012] Preferably, a plurality of positioning protrusions are connected to the end of the connecting port, and the positioning protrusions match the positioning grooves provided on the inner side of the connecting end.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention is provided with a positioning mechanism, which can push the sleeve forward when the connecting pipe is docked with the valve body. The sleeve can drive the push column to move and synchronously drive the limit block to move. At this time, the spring is gradually stretched until the limit block is connected to the connecting port, so that the connecting port can be positioned and fixed, and then the sleeve is locked with bolts to improve the stability of the connection between the connecting port and the connecting end, facilitate the docking of the connecting pipe and the valve body, and is simple and convenient to operate. At the same time, the connecting port is pressed against the sealing gasket and the sealing surface, thereby improving the sealing of the connection between the connecting port and the connecting end, achieving a double sealing effect, avoiding the hidden danger of medium leakage, and being safe and reliable to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection structure between the liquid inlet end and the connecting pipe of the utility model;

[0016] Figure 3 for Figure 2 A local map of

[0017] Figure 4 This is a schematic diagram of the connection end structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the connection port structure of the present utility model.

[0019] In the figure: 1. Valve body; 2. Discharge end; 3. Liquid inlet end; 4. Sheath; 5. Connecting pipe; 6. Connecting end; 7. Bolt; 8. Positioning protrusion; 9. Guide groove; 10. Sealing surface; 11. Guide block; 12. Mounting groove; 13. Guide seat; 14. Pressing surface; 15. Push column; 16. Spring; 17. Limit block; 18. Inclined surface; 19. Connecting port; 20. Sealing gasket; 21. Annular groove; 22. Positioning groove. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figures 1 to 5 The present invention provides a pneumatic valve that is convenient for connecting to a pipeline. The valve comprises a valve body 1 and a liquid inlet end 3 and a liquid outlet end 2 connected to both ends of the valve body 1. The liquid inlet end 3 and the liquid outlet end 2 are connected to a connecting end 6, which matches a connecting port 19 connected to the end of a connecting pipeline 5. The connecting end 6 is connected to a positioning mechanism for positioning the connecting port 19. The positioning mechanism comprises a plurality of limit blocks 17, a plurality of push pins 15, a plurality of guide seats 13, and a plurality of springs 16. The limit blocks 17 are connected to the ends of the push pins 15. The guide seats 13 are used to guide the push pins 15. The ends of the spring 16 are connected to the guide seats 13 and the limit blocks 17. The connecting end 6 is connected to a sheath 4 for driving the limit blocks 17 downward. The inner side of the connecting end 6 is connected with a sealing gasket 20 and a sealing surface 10, and the sealing gasket 20 and the sealing surface 10 are connected to the connecting port 19. When the connecting pipe 5 is connected to the valve body 1, the connecting port 19 is pressed against the sealing gasket 20 and the sealing surface 10 to achieve a double sealing effect, thereby improving the sealing performance of the connection between the connecting port 19 and the connecting end 6 and avoiding the hidden danger of medium leakage.

[0022] When the connecting pipe 5 is docked with the valve body 1, the connecting port 19 is connected to the connecting end 6, and then the sleeve 4 is pushed forward. The front end of the sleeve 4 slides relative to the pressing surface 14, which can drive the push column 15 to move. The push column 15 simultaneously drives the limit block 17 to move, that is, multiple limit blocks 17 move forward synchronously toward the axial direction close to the connecting port 19 until the limit block 17 is pressed tightly against the connecting port 19, and the sleeve 4 stops moving. Then, the bolt 7 is used to lock the sleeve 4, thereby improving the stability of the connection between the connecting port 19 and the connecting end 6, making it easier for the connecting pipe 5 to dock with the valve body 1.

[0023] The positioning mechanism also includes multiple inclined surfaces 18 and multiple pressing surfaces 14. Inclined surfaces 18 are located at the bottom of stop block 17, and pressing surfaces 14 are tilted and positioned at the top of push pin 15. Sealing gasket 20 is made of rubber. During movement of stop block 17, inclined surfaces 18 slide relative to the edge of connection port 19, driving connection port 19 slightly forward. This gradually compresses sealing gasket 20, pressing connection port 19 against sealing surface 10, thereby ensuring a tight seal.

[0024] A plurality of mounting grooves 12 are provided in the connecting end 6, the limit block 17 is slidably connected to the mounting groove 12, the guide seat 13 is fixed in the mounting groove 12, and the push column 15 is slidably connected to the guide seat 13. The coordinated use of the guide seat 13 and the mounting groove 12 provides a good guiding effect for the push column 15 and the limit block 17, and the reciprocating movement is stable.

[0025] An annular groove 21 matching the sealing gasket 20 is provided in the connecting end 6 . The sealing gasket 20 is an O-shaped structure. The annular groove 21 can limit the sealing gasket 20 .

[0026] The sheath 4 is movably connected to the connecting end 6, and the sheath 4 is connected to the bolt 7 used to position the sheath 4. A mounting hole is provided on the side of the sheath 4, and a threaded groove is provided at the end of the connecting end 6. The bolt 7 passes through the mounting hole and is connected to the threaded groove, so that the sheath 4 can be positioned and fixed.

[0027] A plurality of guide grooves 9 are provided on the outside of the connecting end 6, and a guide block 11 is slidably connected to the guide groove 9. The guide block 11 is connected to the inner side of the sheath 4. When the sheath 4 moves, the guide block 11 can be synchronously driven to slide in the corresponding guide groove 9, thereby improving the stability of the movement of the sheath 4.

[0028] The end of the connecting port 19 is connected to a plurality of positioning protrusions 8, which match the positioning grooves 22 arranged on the inner side of the connecting end 6. When the connecting pipe 5 is docked with the valve body 1, the positioning protrusions 8 can be connected to the corresponding positioning grooves 22, which can achieve preliminary limiting of the connecting port 19 and facilitate subsequent locking of the connecting port 19.

[0029] Working principle: When the connecting pipe 5 is connected to the valve body 1, the connecting port 19 is inserted into the connecting end 6 so that the positioning protrusion 8 is connected to the corresponding positioning groove 22, thereby achieving a preliminary limit on the connecting port 19. Then, the sleeve 4 is pushed forward, and the front end of the sleeve 4 slides relative to the pressing surface 14, which can drive the push column 15 and the limit block 17 to move. That is, multiple limit blocks 17 move synchronously toward the axial direction close to the connecting port 19 until the limit blocks 17 are pressed tightly against the connecting port 19. The sleeve 4 stops moving, and the connecting port 19 can be positioned and fixed. In combination with the use of the sealing gasket 20 and the sealing surface 10, a double sealing effect is achieved, avoiding the hidden danger of medium leakage, and improving the stability and tightness of the connection between the connecting pipe 5 and the valve body 1. The sleeve 4 is then locked with the bolt 7. At this time, the spring 16 is in an extended state. When the connecting pipe 5 is separated from the valve body 1, the bolt 7 is loosened. At this time, the sleeve 4 is in a relaxed state. The sleeve 4 is then pulled back to move it back. The sleeve 4 is separated from the top of the push column 15. The stretched spring 16 drives the limit block 17 to move back, so that the limit block 17 is separated from the connecting port 19, thereby loosening the connecting port 19, and then facilitating the separation of the connecting pipe 5 from the valve body 1. The operation is flexible and convenient, and the practicability is strong.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic valve that is convenient for connecting with a pipeline, comprising a valve body (1) and a liquid inlet end (3) and a liquid discharge end (2) connected to both ends of the valve body (1), wherein the liquid inlet end (3) and the liquid discharge end (2) are connected to a connecting end (6), characterized in that: The connecting end (6) matches the connecting port (19) connected to the end of the connecting pipe (5), and the connecting end (6) is connected to a positioning mechanism for positioning the connecting port (19), the positioning mechanism comprising a plurality of limit blocks (17), a plurality of push columns (15), a plurality of guide seats (13), and a plurality of springs (16), the limit blocks (17) being connected to the ends of the push columns (15), the guide seats (13) being used to guide the push columns (15), the two ends of the spring (16) being connected to the guide seats (13) and the limit blocks (17), the connecting end (6) being connected to a sheath (4) for driving the limit blocks (17) to move downward, and the inner side of the connecting end (6) being connected to a sealing gasket (20) and a sealing surface (10), the sealing gasket (20) and the sealing surface (10) being connected to the connecting port (19).

2. A pneumatic valve that is convenient for connecting with a pipeline according to claim 1, characterized in that: The positioning mechanism further comprises a plurality of inclined surfaces (18) and a plurality of pressing surfaces (14), wherein the inclined surfaces (18) are arranged at the bottom of the limit block (17), and the pressing surfaces (14) are arranged obliquely at the top of the push column (15).

3. A pneumatic valve that is convenient for connecting with a pipeline according to claim 1, characterized in that: A plurality of mounting grooves (12) are provided in the connecting end (6), the guide seat (13) is fixed in the mounting groove (12), and the push column (15) is slidably connected to the guide seat (13).

4. A pneumatic valve that is convenient for connecting with a pipeline according to claim 3, characterized in that: The limiting block (17) is slidably connected to the mounting groove (12).

5. A pneumatic valve that is convenient for connecting with a pipeline according to claim 1, characterized in that: An annular groove (21) matching the sealing gasket (20) is provided in the connecting end (6), and the sealing gasket (20) is an O-shaped structure.

6. A pneumatic valve that is convenient for connecting with a pipeline according to claim 1, characterized in that: The sheath (4) is movably connected to the connection end (6), and the sheath (4) is connected to a bolt (7) for positioning the sheath (4).

7. A pneumatic valve that is convenient for connecting with a pipeline according to claim 6, characterized in that: A plurality of guide grooves (9) are provided on the outer side of the connecting end (6), and the guide grooves (9) are slidably connected to guide blocks (11), and the guide blocks (11) are connected to the inner side of the sheath (4).

8. The pneumatic valve that is convenient for connecting with a pipeline according to claim 1, characterized in that: The end of the connection port (19) is connected to a plurality of positioning protrusions (8), and the positioning protrusions (8) match the positioning grooves (22) provided on the inner side of the connection end (6).

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