Pneumatically-controlled bidirectional locking air cylinder piston structure

Abstract

The utility model relates to a pneumatic control bidirectional locking air cylinder piston structure which comprises a rectangular ventilation block, an air inlet hole is formed in the lower end face of the ventilation block, a plurality of installation holes are formed in the front end face of the ventilation block, valve holes are formed in the bottom faces of the installation holes, and vent holes are formed in the bottom faces of the valve holes. A vertical air outlet hole penetrating through the upper end face of the ventilation block is formed in the tail end of the vent hole; an air inlet hole in the ventilation block is communicated with the valve hole, and a plurality of control holes communicated with the mounting hole are formed in the upper end face and the lower end face of the ventilation block respectively; stop air cylinder assemblies are fixed in mounting holes of the ventilation block in a screwed mode respectively, control holes in the upper side and the lower side of the ventilation block are in screwed connection with an air pipe straight-through connector and an air pipe rotating connector respectively, and an air outlet hole in the upper side of the ventilation block is in screwed connection with an air pipe quick connector. The air cylinder piston structure is a pneumatic control structure on the reversing valve, the piston is used based on air pressure, and then a ventilation channel is opened.

Description

Technical field:

[0001] The utility model relates to the technical field of a reversing valve group, and more specifically to a gas-controlled two-way stop cylinder piston structure. Background technology:

[0002] The reversing valve is a directional control valve with more than two flow forms and more than two oil ports. It is a valve that realizes the communication, cutting and reversing of hydraulic oil flow, as well as pressure unloading and sequential action control. It is a directional control valve that relies on the relative movement of the valve core and the valve body. There are manual, motorized, electric, hydraulic, electro-hydraulic and other types of operating valve core movement; for some gas reversing valves, the control methods are generally manual, motorized, electric, hydraulic, electro-hydraulic and other methods. Then some people proposed that the reversing valve itself realizes the gas transmission reversing, and there is an air source itself, and it can be controlled by controlling the air source, so it is necessary to design a pneumatically controlled reversing valve structure. Utility model content:

[0003] The purpose of the utility model is to address the deficiencies of the prior art and to provide a pneumatically controlled two-way stop cylinder piston structure, which is a pneumatic control structure on a reversing valve, which realizes the use of the piston based on air pressure, thereby realizing the opening of the ventilation channel.

[0004] A pneumatically controlled two-way stop cylinder piston structure, comprising a rectangular ventilation block, an air inlet hole formed on the lower end surface of the ventilation block, a plurality of mounting holes formed on the front end surface of the ventilation block, a valve hole formed on the bottom surface of the mounting hole, a vent hole formed on the bottom surface of the valve hole, and an air outlet hole formed vertically and penetrating the upper end surface of the ventilation block at the end of the vent hole; the air inlet hole on the ventilation block is connected to the valve hole, and a plurality of control holes connected to the mounting hole are respectively formed on the upper and lower end surfaces of the ventilation block;

[0005] The mounting holes of the ventilation block are respectively screwed with stop cylinder assemblies, the control holes on the upper and lower sides of the ventilation block are respectively screwed with air pipe straight-through joints and air pipe rotary joints, and the air outlet hole on the upper side of the ventilation block is screwed with an air pipe quick joint;

[0006] The stop cylinder assembly comprises a cap screwed on the mounting hole and a piston inserted in the valve hole, the piston comprises a T-shaped core shaft, the outer end of the core shaft is inserted in the cap and formed with a piston shaft, the end of the piston shaft is formed with a baffle, a piston ring is inserted on the piston shaft between the baffle and the core shaft, the outer ring of the piston ring presses against the inner wall of the cap; a guide shaft is formed on the outer end surface of the baffle, a return spring is inserted on the guide shaft, one end of the return spring presses against the baffle, and the other end presses against the bottom surface of the inner side of the cap; a sealing valve sleeve is inserted on the core shaft, the sealing valve sleeve is screwed and fixed in the valve hole, the inner end of the core shaft extends out of the sealing valve sleeve and is formed with a T-shaped connector, a sealing ring is inserted and fixed on the connector, the sealing ring presses against the bottom surface of the valve hole and blocks the entrance of the vent; the control holes are distributed between the piston ring and the sealing valve sleeve.

[0007] Preferably, the cap comprises a cylindrical cover body, a limit groove with a regular hexagonal outer contour is formed on the outer wall of the outer end of the cover body, and a pressure-stabilizing hole is formed in the middle of the outer end surface of the cover body.

[0008] Preferably, a retaining ring is formed on the outer wall of the cover body on the inner side of the limit slot; an annular sealing ring groove is formed on the outer wall of the entrance of the mounting hole on the ventilation block, a sealing ring is inserted in the sealing ring groove, and the sealing ring is clamped and fixed between the retaining ring of the cap and the bottom surface of the sealing ring groove on the ventilation block.

[0009] Preferably, the piston ring comprises an inner ring body with an L-shaped cross-section, the outer ring of the inner ring body is formed with a conical outer ring body, the outer wall of the outer ring body is pressed against the inner wall of the cap; an annular air cavity is formed between the outer ring body and the inner ring body.

[0010] Preferably, the sealing valve sleeve includes an externally threaded connecting sleeve with an L-shaped cross-section, an extension sleeve with an L-shaped cross-section is formed on the outer end surface of the externally threaded connecting sleeve, the inner wall of the extension sleeve and the inner wall of the externally threaded connecting sleeve are in the same cylindrical surface, annular sealing grooves are formed on the inner walls of the extension sleeve and the externally threaded connecting sleeve, a rubber sealing ring is inserted in the sealing groove, and the rubber sealing ring is pressed against the outer wall of the core shaft.

[0011] Preferably, an I-shaped limiting groove is formed on the outer end surface of the extension sleeve, and parallel limiting grooves are formed on the outer walls on both sides of the extension sleeve.

[0012] Preferably, both sides of the front end surface of the ventilation block are formed with sunken platforms, and the bottom surface of the sunken platforms is formed with bolt through holes that penetrate the rear end surface of the ventilation block.

[0013] The beneficial effects of the utility model are:

[0014] The cylinder piston structure is a pneumatic control structure on the reversing valve, which realizes the use of the piston based on air pressure, thereby realizing the opening of the ventilation channel. Description of the drawings:

[0015] Figure 1 It is a partial cross-sectional schematic diagram of the utility model in the side view direction;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the internal ventilation block of the utility model;

[0017] Figure 3 This is a three-dimensional structural schematic diagram of the internal ventilation block of the utility model from another angle;

[0018] Figure 4 It is an exploded view of the inner stop cylinder assembly of the utility model.

[0019] In the figure: 1. Ventilation block; 11. Air inlet; 12. Mounting hole; 13. Valve hole; 14. Ventilation hole; 15. Air outlet; 16. Control hole; 17. Sink; 18. Bolt hole; 19. Sealing ring groove; 2. Stop cylinder assembly; 21. Cap; 22. Piston; 23. Return spring; 24. Piston ring; 25. Sealing valve sleeve; 26. Sealing ring; 3. Air pipe quick connector; 4. Air pipe straight connector; 5. Air pipe rotary connector. Specific implementation method:

[0020] Example: See Figures 1 to 4 As shown, a pneumatically controlled two-way stop cylinder piston structure comprises a rectangular ventilation block 1, an air inlet hole 11 is formed on the lower end surface of the ventilation block 1, a plurality of mounting holes 12 are formed on the front end surface of the ventilation block 1, a valve hole 13 is formed on the bottom surface of the mounting hole 12, a vent hole 14 is formed on the bottom surface of the valve hole 13, and a vertical air outlet hole 15 that runs through the upper end surface of the ventilation block 1 is formed at the end of the vent hole 14; the air inlet hole 11 on the ventilation block 1 is connected with the valve hole 13, and a plurality of control holes 16 that are connected with the mounting hole 12 are respectively formed on the upper and lower end surfaces of the ventilation block 1;

[0021] The mounting holes 12 of the ventilation block 1 are respectively screwed with stopper cylinder assemblies 2, the control holes 16 on the upper and lower sides of the ventilation block 1 are respectively screwed with air pipe straight-through joints 4 and air pipe rotary joints 5, and the air outlet hole 15 on the upper side of the ventilation block 1 is screwed with an air pipe quick joint 3;

[0022] The stop cylinder assembly 2 includes a cap 21 screwed on the mounting hole 12 and a piston 22 inserted in the valve hole 13. The piston 22 includes a T-shaped core shaft 221. The outer end of the core shaft 221 is inserted in the cap 21 and is formed with a piston shaft 222. The end of the piston shaft 222 is formed with a baffle 223. A piston ring 24 is inserted on the piston shaft 222 between the baffle 223 and the core shaft 221. The outer ring of the piston ring 24 is pressed against the inner wall of the cap 21. A guide shaft 224 is formed on the outer end surface of the baffle 223. The guide shaft 224 is inserted There is a return spring 23, one end of the return spring 23 presses against the baffle 223, and the other end presses against the bottom surface of the inner side of the cap 21; the core shaft 221 is sleeved with a sealing valve sleeve 25, and the sealing valve sleeve 25 is screwed and fixed in the valve hole 13. The inner end of the core shaft 221 extends out of the sealing valve sleeve 25 to form a T-shaped connector 225, and a sealing ring 26 is sleeved and fixed on the connector 225. The sealing ring 26 presses against the bottom surface of the valve hole 13 and blocks the entrance of the vent 14; the control hole 16 is distributed between the piston ring 24 and the sealing valve sleeve 25.

[0023] The cap 21 comprises a cylindrical cover body 211, on the outer wall of the outer end of the cover body 211 is formed a limit slot 212 with a regular hexagonal outer contour, and in the middle of the outer end surface of the cover body 211 is formed a pressure stabilizing hole 213, based on the limit slot 212 to facilitate the cap 21 to be screwed and fixed on the ventilation block 1.

[0024] A retaining ring 214 is formed on the outer wall of the cover body 211 on the inner side of the limiting slot 212; an annular sealing ring groove 19 is formed on the outer wall of the entrance of the mounting hole 12 on the ventilation block 1, and a sealing ring is inserted in the sealing ring groove 19, which is clamped and fixed between the retaining ring 214 of the cap 21 and the bottom surface of the sealing ring groove 19 on the ventilation block 1.

[0025] The piston ring 24 includes an inner ring body 241 with an L-shaped cross-section, and the outer ring of the inner ring body 241 is formed with a conical outer ring body 242, and the outer wall of the outer ring body 242 is pressed against the inner wall of the cap 21; an annular air cavity 243 is formed between the outer ring body 242 and the inner ring body 241, and the outer ring body 242 can be elastically compressed, thereby achieving the outer ring body 242 to maintain elastic pressure on the inner wall of the cap 21.

[0026] The sealing valve sleeve 25 includes an externally threaded connecting sleeve 251 with an L-shaped cross-section, and an extension sleeve 252 with an L-shaped cross-section is formed on the outer end surface of the externally threaded connecting sleeve 251. The inner wall of the extension sleeve 252 and the inner wall of the externally threaded connecting sleeve 251 are in the same cylindrical surface. Annular sealing grooves are formed on the inner walls of the extension sleeve 252 and the externally threaded connecting sleeve 251, and a rubber sealing ring is inserted in the sealing groove, which is pressed against the outer wall of the core shaft 221.

[0027] An I-shaped limiting groove 254 is formed on the outer end surface of the extension sleeve 252, and parallel limiting grooves 253 are formed on the outer walls on both sides of the extension sleeve 252. Based on the limiting groove 254 or the limiting groove 253, it is convenient to screw the sealing valve sleeve 25 into the valve hole 13. A sealing ring is inserted into the external threaded connection sleeve 251, and the sealing ring is clamped between the ventilation block 1 and the sealing valve sleeve 25.

[0028] The front end surface of the ventilation block 1 is formed with a sink 17 on both sides, and the bottom surface of the sink 17 is formed with a bolt through hole 18 that penetrates the rear end surface of the ventilation block 1. The ventilation block 1 is conveniently installed and fixed by bolts by arranging bolts in the bolt through holes 18.

[0029] Working principle: The utility model is a pneumatically controlled two-way stop cylinder piston structure, and the structure of the pneumatically controlled two-way stop cylinder piston is a pneumatic control device on the reversing valve, that is, the stop cylinder assembly 2. Air is taken in through the control hole 16, so that the piston 22 in the stop cylinder assembly 2 can move toward the side of the cap 21, and then the movement of the sealing ring 26 can realize the opening of the vent hole 14, realize the connection between the air inlet hole 11 and the air vent hole 14, and then the air outlet hole 15 can realize the air outlet;

[0030] like Figure 2 As shown, there are four air outlet holes 15 and four mounting holes 12, and a stop cylinder assembly 2 is installed in the mounting hole 12. Each stop cylinder assembly 2 can control the opening and closing of the corresponding air outlet hole 15, thereby realizing reversing.

[0031] The embodiments are used to illustrate the present invention, but not to limit the present invention. Any person skilled in the art may modify the embodiments without violating the spirit and scope of the present invention, and therefore the scope of protection of the present invention shall be as set forth in the claims of the present invention.

Claims

1. A pneumatically controlled bidirectional stopper cylinder piston structure, comprising a rectangular ventilation block (1), wherein an air inlet hole (11) is formed on the lower end surface of the ventilation block (1), characterized in that: A plurality of mounting holes (12) are formed on the front end surface of the ventilation block (1), a valve hole (13) is formed on the bottom surface of the mounting hole (12), a vent hole (14) is formed on the bottom surface of the valve hole (13), and a vertical air outlet hole (15) that penetrates the upper end surface of the ventilation block (1) is formed at the end of the vent hole (14); the air inlet hole (11) on the ventilation block (1) is connected to the valve hole (13), and a plurality of control holes (16) that are connected to the mounting hole (12) are respectively formed on the upper and lower end surfaces of the ventilation block (1); A stop cylinder assembly (2) is screwed and fixed in the mounting hole (12) of the ventilation block (1), a trachea straight joint (4) and a trachea rotary joint (5) are screwed on the control holes (16) on the upper and lower sides of the ventilation block (1), and a trachea quick joint (3) is screwed on the air outlet hole (15) on the upper side of the ventilation block (1); The stop cylinder assembly (2) comprises a cap (21) screwed onto the mounting hole (12) and a piston (22) inserted into the valve hole (13); the piston (22) comprises a T-shaped core shaft (221); the outer end of the core shaft (221) is inserted into the cap (21) and is formed with a piston shaft (222); a baffle (223) is formed at the end of the piston shaft (222); a piston ring (24) is inserted and sleeved on the piston shaft (222) between the baffle (223) and the core shaft (221); the outer ring of the piston ring (24) is pressed against the inner wall of the cap (21); a guide shaft (224) is formed on the outer end surface of the baffle (223); The plug sleeve has a return spring (23), one end of the return spring (23) is pressed against the baffle (223), and the other end is pressed against the bottom surface of the inner side of the cap (21); the plug sleeve on the core shaft (221) is provided with a sealing valve sleeve (25), the sealing valve sleeve (25) is screwed and fixed in the valve hole (13), the inner end of the core shaft (221) extends out of the sealing valve sleeve (25) to form a T-shaped connector (225), the plug sleeve on the connector (225) is fixed with a sealing ring (26), the sealing ring (26) is pressed against the bottom surface of the valve hole (13) and blocks the entrance of the vent hole (14); the control hole (16) is distributed between the piston ring (24) and the sealing valve sleeve (25).

2. The pneumatically controlled bidirectional stopper cylinder piston structure according to claim 1, characterized in that: The cap (21) comprises a cylindrical cover body (211), the outer wall of the outer end of the cover body (211) is formed with a limit groove (212) with a regular hexagonal outer contour, and the middle part of the outer end surface of the cover body (211) is formed with a pressure stabilizing hole (213).

3. The pneumatically controlled bidirectional stopper cylinder piston structure according to claim 2, characterized in that: A retaining ring (214) is formed on the outer wall of the cover body (211) inside the limiting slot (212); an annular sealing ring groove (19) is formed on the outer wall of the entrance of the mounting hole (12) on the ventilation block (1), a sealing ring is inserted in the sealing ring groove (19), and the sealing ring is clamped and fixed between the retaining ring (214) of the cap (21) and the bottom surface of the sealing ring groove (19) on the ventilation block (1).

4. The pneumatically controlled bidirectional stopper cylinder piston structure according to claim 1, characterized in that: The piston ring (24) comprises an inner ring body (241) with an L-shaped cross-section, the outer ring of the inner ring body (241) is formed with a conical outer ring body (242), and the outer wall of the outer ring body (242) is pressed against the inner wall of the cap (21); an annular air cavity (243) is formed between the outer ring body (242) and the inner ring body (241).

5. The pneumatically controlled bidirectional stopper cylinder piston structure according to claim 1, characterized in that: The sealing valve sleeve (25) comprises an externally threaded connection sleeve (251) having an L-shaped cross section, an extension sleeve (252) having an L-shaped cross section is formed on the outer end surface of the externally threaded connection sleeve (251), the inner wall of the extension sleeve (252) and the inner wall of the externally threaded connection sleeve (251) are within the same cylindrical surface, an annular sealing groove is formed on the inner walls of the extension sleeve (252) and the externally threaded connection sleeve (251), a rubber sealing ring is inserted into the sealing groove, and the rubber sealing ring is pressed against the outer wall of the core shaft (221).

6. The pneumatically controlled bidirectional stopper cylinder piston structure according to claim 5, characterized in that: An "I"-shaped limiting groove (254) is formed on the outer end surface of the extension sleeve (252), and parallel limiting grooves (253) are formed on the outer walls on both sides of the extension sleeve (252).

7. The pneumatically controlled bidirectional stopper cylinder piston structure according to claim 1, characterized in that: The front end surface of the ventilation block (1) is formed with a sink (17) on both sides, and the bottom surface of the sink (17) is formed with a bolt through hole (18) that passes through the rear end surface of the ventilation block (1).

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