A reversing valve with a working cylinder that can automatically reset

Abstract

The present invention discloses a reversing valve with a working cylinder that can automatically reset, which comprises a valve body with an air passage channel arranged therein; at least one first air chamber with a micro-pressure balance valve arranged therein; at least one second upper air chamber and at least one second lower air chamber, the second upper air chamber is communicated with the second lower air chamber through a connecting pipe, and a piston mechanism is arranged in the second upper air chamber, the connecting pipe and the second lower air chamber; and at least one third air chamber for installing a timing trigger piston; after the gas enters the air passage channel, by applying pressure to the micro-pressure balance valve, the piston mechanism is controlled to move, so as to realize the reciprocating movement of the timing trigger piston pushed by the gas in the air passage channel. The present invention can enable the gas to enter the first air chamber, the second upper air chamber, the second lower air chamber and the third air chamber through the air passage channel, be used for controlling the actions of the micro-pressure balance valve, the piston mechanism and the timing trigger piston, improve the pneumatic control precision, and at the same time, the gas in the reversing valve can be reversed through the micro-pressure balance valve and the piston mechanism.

Description

Technical Field

[0001] The present invention relates to a reversing valve with a working cylinder that can automatically reset. Background Art

[0002] With the gradual development of science and technology, pneumatic transmission technology is widely used in various industries such as machinery, electronics, light industry, textile, and transportation. Pneumatic transmission technology has advantages that cannot be compared with other control methods such as mechanical control, electrical control, and hydraulic control. For example, it is green and environmentally friendly, has a fast response speed, is fireproof, explosion-proof, moisture-proof, has a simple structure, and is convenient for installation and maintenance.

[0003] A reversing valve is a very widely used direction control valve in a pneumatic transmission system. It has a simple, compact, and reliable sealing structure and is mostly used to form a pneumatic transmission system controlled by a full-air valve. It uses compressed air as power to push the spool of the reversing valve to move, so that the air path is reversed or connected, and it is divided into two types: double air control and single air control. However, the reversing valve in the prior art has low control accuracy. Summary of the Invention

[0004] The purpose of the present invention is to provide a technical solution of a reversing valve with a working cylinder that can automatically reset for the deficiencies of the prior art. It can make gas enter the first air chamber, the second upper air chamber, the second lower air chamber, and the third air chamber through the air path channel, be used to control the micro-pressure balance valve, the piston mechanism, and the timing trigger piston to act, improve the pneumatic control accuracy, and at the same time, through the micro-pressure balance valve and the piston mechanism, the gas in the reversing valve can be reversed.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A reversing valve with a working cylinder that can automatically reset, characterized in that it includes

[0007] A valve body, in which an air path channel is provided;

[0008] At least one first air chamber, in which a micro-pressure balance valve is provided to control the opening and closing of the first air chamber;

[0009] At least one second upper air chamber and at least one second lower air chamber, the second upper air chamber is connected to the second lower air chamber through a connecting pipe, and a piston mechanism is provided in the second upper air chamber, the connecting pipe, and the second lower air chamber to control the opening and closing of the second upper air chamber and the second lower air chamber;

[0010] And at least one third air chamber for installing a timing trigger piston;

[0011] After the gas enters the gas path channel, by applying pressure to the micro-pressure balance valve, the piston mechanism is controlled to move, enabling the gas in the gas path channel to push the timing trigger piston to reciprocate; through the design of the above structure, the gas can enter the first air chamber, the second upper air chamber, the second lower air chamber, and the third air chamber through the gas path channel, which is used to control the actions of the micro-pressure balance valve, the piston mechanism, and the timing trigger piston, improving the pneumatic control accuracy. At the same time, through the micro-pressure balance valve and the piston mechanism, the gas in the reversing valve can be reversed.

[0012] Furthermore, the gas path channel includes a first gas pipeline, a second gas pipeline, a third gas pipeline, a fourth gas pipeline, a fifth gas pipeline, an exhaust pipe, and a sixth gas pipeline. The first gas pipeline is connected to the first air chamber. The first gas pipeline is connected to the third gas pipeline and the fourth gas pipeline through the second gas pipeline. The third gas pipeline and the fourth gas pipeline are respectively connected to the second upper air chamber and the third air chamber. The first air chamber is connected to the second lower air chamber through the fifth gas pipeline. The second lower air chamber is provided with an exhaust pipe. The connecting pipe is connected to the sixth gas pipeline. The first gas pipeline is used to input gas into the first air chamber and, through the second gas pipeline, input gas into the second upper air chamber and the third air chamber through the third gas pipeline and the fourth gas pipeline respectively. The gas in the first air chamber can be input into the second lower air chamber through the fifth gas pipeline. The gas in the second upper air chamber can be output through the sixth gas pipeline. The gas in the second lower air chamber can be output through the exhaust pipe.

[0013] Furthermore, the intake port of the exhaust pipe is located above the outlet port of the fifth gas pipeline. The design of this structure can not only ensure that the gas input into the second lower air chamber by the fifth gas pipeline drives the piston mechanism to push upward, facilitating the gas in the third gas pipeline input into the second upper air chamber to be output through the connecting pipe and the sixth gas pipeline, but also enable the gas in the lower part of the second lower air chamber to be discharged through the fifth gas pipeline and the first air chamber during the downward movement of the piston mechanism, and the gas in the connecting pipe and the upper part of the second lower air chamber to be discharged through the exhaust pipe. The control is flexible and convenient, without air leakage, and the control accuracy is improved.

[0014] Furthermore, the piston mechanism includes a valve stem, a valve core, and a second sealing gasket. The second sealing gasket and the valve core are located at both ends of the valve stem. The second sealing gasket is located in the second upper air chamber, and the valve core is located in the second lower air chamber. The valve core can drive the valve stem to move upward, thereby opening the second sealing gasket to facilitate the flow of gas in the second upper air chamber.

[0015] Furthermore, the second upper air chamber is provided with an air chamber plug. The second sealing gasket is connected to the air chamber plug through a spring. The spring can press the second sealing gasket downward until the connecting pipe is blocked. The valve stem drives the valve core to move downward, enabling the air in the connecting pipe and the upper part of the second lower air chamber to be discharged through the exhaust pipe.

[0016] Furthermore, the bottom of the valve core is located above the outlet port of the fifth gas pipeline, preventing blockage of the fifth gas pipeline and ensuring the smooth inhalation and exhalation of the second lower air chamber.

[0017] Furthermore, the size of the second lower air chamber is larger than that of the second upper air chamber, which is beneficial for controlling a larger valve with less effort.

[0018] Furthermore, the micro-pressure balance valve includes a micro-pressure balance valve body, a pushing component, and a first gasket. The micro-pressure balance valve body is arranged in the first air chamber. Semi-circular blocks are symmetrically arranged on the micro-pressure balance valve body. The first gasket is located in the cavity formed by the two semi-circular blocks. The pushing component drives the first gasket to move along the cavity. By moving the pushing component along the micro-pressure balance valve body, the first gasket can be driven to move along the cavity, realizing the closing or opening between the first air pipe and the first air chamber. The two semi-circular blocks can limit the first gasket.

[0019] Furthermore, the pushing component includes a micro-pressure balance valve thimble, a pushing block, and an extrusion block. The extrusion block is fixed on the pushing block. A second ventilation groove is arranged on the extrusion block, and the second ventilation groove communicates with the cavity. A first through hole and a second through hole are arranged on the micro-pressure balance valve body, and the second through hole communicates with the cavity through the first through hole. The micro-pressure balance valve thimble drives the extrusion block to move through the pushing block, realizing the pressing or loosening of the first gasket. By moving the micro-pressure balance valve thimble along the second through hole and the first through hole, the pushing block can be driven to move along the first through hole and the cavity, and then the first gasket can be extruded through the extrusion block. The second ventilation groove can be output through the first air chamber when the gas at the bottom of the second lower air chamber is exhausted. The sizes of the extrusion block and the pushing block are both smaller than the size of the cavity, enabling the floating assembly of the pushing block and the extrusion block.

[0020] Furthermore, a first ventilation groove is formed between the two semi-circular blocks for gas flow, facilitating the transportation of the gas in the cavity through the first ventilation groove.

[0021] Due to the adoption of the above technical solutions, the present invention has the following beneficial effects:

[0022] 1. The present invention can enable the gas to enter the first air chamber, the second upper air chamber, the second lower air chamber, and the third air chamber through the air path channel, be used to control the micro-pressure balance valve, the piston mechanism, and the timing trigger piston to act, improve the pneumatic control accuracy, and at the same time, the gas in the reversing valve can be reversed through the micro-pressure balance valve and the piston mechanism.

[0023] 2. The first air pipe is used to input gas into the first air chamber, and through the second air pipe, the third air pipe, and the fourth air pipe, the gas is respectively input into the second upper air chamber and the third air chamber. The gas in the first air chamber can be input into the second lower air chamber through the fifth air pipe. The gas in the second upper air chamber can be output through the sixth air pipe. The gas in the second lower air chamber can be output through the exhaust pipe.

[0024] 3. The intake port of the exhaust pipe is located above the outlet port of the fifth air pipe. This not only ensures that the gas input into the second lower air chamber by the fifth air pipe drives the piston mechanism to move upward, facilitating the gas input into the second upper air chamber by the third air pipe to be output through the connecting pipe and the sixth air pipe, but also enables the gas in the lower part of the second lower air chamber to be discharged through the fifth air pipe and the first air chamber during the downward movement of the piston mechanism. The gas in the connecting pipe and the upper part of the second lower air chamber is discharged through the exhaust pipe. The control is flexible and convenient, without air leakage, and the control accuracy is improved.

[0025] 4. The bottom of the valve core is located above the outlet port of the fifth air pipe, preventing blockage of the fifth air pipe and ensuring the smooth inhalation and exhalation of the second lower air chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] Figure 1 It is the effect diagram of a commutation valve with a working cylinder and automatic reset according to the present invention;

[0028] Figure 2 It is the internal structure schematic diagram of the present invention;

[0029] Figure 3 It is the connection schematic diagram between the micro-pressure balance valve body, the pushing component and the first gasket in the present invention;

[0030] Figure 4 It is Figure 3 the front view of;

[0031] Figure 5 It is Figure 4 the schematic diagram of the structure in the A-A direction in;

[0032] Figure 6 It is the effect diagram of the pushing component in the present invention;

[0033] Figure 7 It is Figure 1 the front view of;

[0034] Figure 8 It is Figure 7 the schematic diagram of the structure in the B-B direction in.

[0035] In the figure: 1-valve body; 101-groove; 102-boss; 103-positioning column;

[0036] 201 - Intake nozzle joint; 202 - Outlet nozzle joint; 206 - First air chamber; 207 - Second upper air chamber; 208 - Second lower air chamber; 209 - Third air chamber; 210 - First air pipe; 211 - Second air pipe; 212 - Third air pipe; 213 - Fourth air pipe; 214 - Fifth air pipe; 215 - Exhaust pipe; 216 - Sixth air pipe; 217 - Connecting pipe; 218 - Sealing plug steel ball

[0037] 3 - Micro - pressure balance valve; 301 - Micro - pressure balance valve body; 302 - Micro - pressure balance valve thimble; 302a - First booster rod; 302b - Connecting rod; 302c - Second booster rod; 303 - Semi - circular block; 304 - First ventilation groove; 305 - First gasket; 306 - Extrusion block; 306a - Second ventilation groove; 307 - Thrust block; 307a - Thrust plate; 307b - Thrust rod; 308 - First through - hole; 309 - Second through - hole

[0038] 401 - Valve stem; 402 - Valve core; 403 - Second gasket; 404 - Air chamber plug; 405 - Spring Detailed implementation mode

[0039] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0040] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0041] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above - mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non - exclusive inclusion.

[0042] As Figures 1 to 8 shown, a reversing valve with a working cylinder that can be automatically reset according to the present invention includes a valve body 1. An intake nozzle joint 201 and an outlet nozzle joint 202 are provided on the outside of the valve body 1 for connecting to an external air supply device. A groove 101 and a boss 102 are provided on the valve body 1, and a positioning post 103 is installed on the boss 102 to facilitate connection with an external mechanical transmission mechanism.

[0043] Inside the valve body 1, there is a first air chamber 206. Inside the first air chamber 206, there is a micro-pressure balance valve 3 for controlling the opening and closing of the first air chamber 206. The micro-pressure balance valve 3 includes a micro-pressure balance valve body 301, a pushing component, and a first gasket 305. The micro-pressure balance valve body 301 is arranged inside the first air chamber 206. Symmetric semi-circular blocks 303 are provided on the micro-pressure balance valve body 301. The first gasket 305 is located inside the cavity formed by the two semi-circular blocks 303. The pushing component drives the first gasket 305 to move along the cavity. By moving the pushing component along the micro-pressure balance valve body 301, the first gasket 305 can be driven to move along the cavity, realizing the closing or opening between the first air pipe 210 and the first air chamber 206. The two semi-circular blocks 303 can limit the first gasket 305. A first ventilation groove 304 is formed between the two semi-circular blocks 303 for gas flow, facilitating the transportation of the gas inside the cavity through the first ventilation groove 304.

[0044] The pushing component includes a micro-pressure balance valve thimble 302, a pushing block 307, and an extrusion block 306. The extrusion block 306 is fixed on the pushing block 307. A second ventilation groove 306a is provided on the extrusion block 306. The second ventilation groove 306a communicates with the cavity. A first through-hole 308 and a second through-hole 309 are provided on the micro-pressure balance valve body 301. The second through-hole 309 communicates with the cavity through the first through-hole 308. The diameter of the first through-hole is smaller than that of the second through-hole. The micro-pressure balance valve thimble 302 drives the extrusion block 306 to move through the pushing block 307, realizing the pressing or loosening of the first gasket 305. By moving the micro-pressure balance valve thimble 302 along the second through-hole 309 and the first through-hole 308, the pushing block 307 can be driven to move along the first through-hole 308 and the cavity, and then the first gasket 305 can be extruded through the extrusion block 306. The second ventilation groove 306a can output through the first air chamber 206 when the gas at the bottom of the second lower air chamber 208 is exhausted. The sizes of the extrusion block 306 and the pushing block 307 are both smaller than the size of the cavity, enabling the floating assembly of the pushing block 307 and the extrusion block 306.

[0045] The micro-pressure balance valve thimble 302 includes a first boosting rod 302a, a second boosting rod 302c, and an adapter rod 302b. The first boosting rod 302a is connected to the second boosting rod 302c through the adapter rod 302b. The diameter of the first boosting rod 302a is smaller than that of the second boosting rod 302c. The first boosting rod 302a matches the first through-hole 308, and the second boosting rod 302c matches the second through-hole 309. The adapter rod 302b has a conical structure. The smaller end face of the adapter rod 302b is connected to the first boosting rod 302a, and the larger end face is connected to the second boosting rod 302c, which is not only beneficial for the micro-pressure balance valve thimble 302 to move along the micro-pressure balance valve body 301 but also beneficial for the second lower air chamber 208 to exhaust through the gap inside the first through-hole 308 and the second through-hole 309.

[0046] The pushing block 307 includes a pushing disk 307a and a pushing rod 307b. The pushing rod 307b is vertically fixed at the center of the pushing disk 307a. The pushing rod 307b abuts against the end of the first boosting rod 302a. The pushing rod 307b is matched with the first through hole 308. The pushing disk 307a is located inside the cavity. The extrusion block 306 is fixedly installed on the pushing disk 307a and is located on the opposite side of the pushing rod 307b.

[0047] A second upper air chamber 207 and a second lower air chamber 208 are arranged in the valve body 1. The second upper air chamber 207 is communicated with the second lower air chamber 208 through a connecting pipe 217. A piston mechanism is arranged in the second upper air chamber 207, the connecting pipe 217 and the second lower air chamber 208 for controlling the opening and closing of the second upper air chamber 207 and the second lower air chamber 208. The piston mechanism includes a valve rod 401, a valve core 402 and a second sealing gasket 403. The second sealing gasket 403 and the valve core 402 are located at both ends of the valve rod 401. The second sealing gasket 403 is located inside the second upper air chamber 207, and the valve core 402 is located inside the second lower air chamber 208. The valve core 402 can drive the valve rod 401 to move upward, and then the second sealing gasket 403 can be opened to facilitate the flow of the gas in the second upper air chamber 207.

[0048] The second upper air chamber 207 is provided with an air chamber plug 404. The second sealing gasket 403 is connected to the air chamber plug 404 through a spring 405. The second sealing gasket 403 can be pressed downward through the spring 405 until the connecting pipe 217 is blocked. The valve rod 401 drives the valve core 402 to move downward, so that the air in the connecting pipe 217 and the upper part of the second lower air chamber 208 is discharged through the exhaust pipe 215. The bottom of the valve core 402 is located above the air outlet port of the fifth air pipe 214, which will not cause the blockage of the fifth air pipe 214 and ensure that the second lower air chamber 208 can inhale and exhale smoothly. The size of the second lower air chamber 208 is larger than that of the second upper air chamber 207, which is beneficial to controlling a larger valve with less force.

[0049] A third air chamber 209 is also arranged in the valve body 1 for installing a timing trigger piston. An air path channel is arranged in the valve body 1. After the gas enters the air path channel, by applying pressure to the micro-pressure balance valve 3, the piston mechanism is controlled to move, so that the gas in the air path channel can push the timing trigger piston to move reciprocally. Through the design of the above structure, the gas can enter the first air chamber 206, the second upper air chamber 207, the second lower air chamber 208 and the third air chamber 209 through the air path channel, which is used to control the actions of the micro-pressure balance valve 3, the piston mechanism and the timing trigger piston, improve the pneumatic control accuracy, and at the same time, the gas in the reversing valve can be reversed through the micro-pressure balance valve 3 and the piston mechanism.

[0050] The gas path includes a first gas pipeline 210, a second gas pipeline 211, a third gas pipeline 212, a fourth gas pipeline 213, a fifth gas pipeline 214, an exhaust pipe 215, and a sixth gas pipeline 216. The first gas pipeline 210 is connected to the first gas chamber 206. The first gas pipeline 210 is connected to the third gas pipeline 212 and the fourth gas pipeline 213 through the second gas pipeline 211. The third gas pipeline 212 and the fourth gas pipeline 213 are respectively connected to the second upper gas chamber 207 and the third gas chamber 209. The first gas chamber 206 is connected to the second lower gas chamber 208 through the fifth gas pipeline 214. The second lower gas chamber 208 is provided with the exhaust pipe 215. The connecting pipe 217 is connected to the sixth gas pipeline 216. The first gas pipeline 210 is used to input gas into the first gas chamber 206, and through the second gas pipeline 211, input gas into the second upper gas chamber 207 and the third gas chamber 209 through the third gas pipeline 212 and the fourth gas pipeline 213 respectively. The gas in the first gas chamber 206 can be input into the second lower gas chamber 208 through the fifth gas pipeline 214. The gas in the second upper gas chamber 207 can be output through the sixth gas pipeline 216. The gas in the second lower gas chamber 208 can be output through the exhaust pipe 215.

[0051] The intake port of the exhaust pipe 215 is located above the outlet port of the fifth gas pipeline 214. The design of this structure can not only ensure that the gas input into the second lower gas chamber 208 by the fifth gas pipeline 214 drives the piston mechanism to push upward, facilitating the gas input into the second upper gas chamber 207 by the third gas pipeline 212 to be output through the connecting pipe 217 and the sixth gas pipeline 216, but also enable the gas in the lower part of the second lower gas chamber 208 to be discharged through the fifth gas pipeline 214 and the first gas chamber 206 during the downward movement of the piston mechanism, and the gas in the connecting pipe 217 and the upper part of the second lower gas chamber 208 to be discharged through the exhaust pipe 215. The control is flexible and convenient, without air leakage, and the control accuracy is improved. Sealing plug steel balls 218 are provided on the second gas pipeline 211, the third gas pipeline 212, the fourth gas pipeline 213, and the fifth gas pipeline 214.

[0052] In actual use, the present invention can be used in cooperation with a timing setting mechanism and a mechanical transmission mechanism. The timing setting mechanism is used to accurately set the action duration of the execution structure. The timing setting mechanism includes a turbine and a duration setting wheel. The duration setting wheel is provided with a first scale and an external gear ring. The turbine meshes with the external gear ring.

[0053] The mechanical transmission mechanism includes a second hand wheel, a first transmission gear for driving the second hand wheel to rotate, a gear transmission component connected to the first transmission gear through a double ratchet component, an escapement component connected to the gear transmission component, and a driving component for driving the first transmission gear to rotate.

[0054] The first transmission gear includes a first gear and a rotating disk. The first gear is fixed to the rotating disk. The rotating disk is provided with a card slot and a first internal gear ring.

[0055] The double ratchet assembly includes a second sleeve, a first ratchet and a second ratchet. The second sleeve is connected to the second ratchet through the first ratchet. The second sleeve, the first ratchet and the second ratchet are of an integrally formed structure. A U-shaped elastic piece is provided on the first ratchet. The first ratchet matches the first internal gear ring. A ratchet elastic piece is provided on the second ratchet, and the ratchet elastic pieces are evenly distributed along the outer circumference of the second ratchet.

[0056] The gear transmission assembly includes a second transmission gear, a third transmission gear and a fourth transmission gear. A second internal gear ring matching the second ratchet is provided on the second transmission gear. A second gear is provided on the third transmission gear, and the second gear meshes with the second transmission gear. The fourth transmission gear meshes with the third transmission gear.

[0057] The escapement assembly includes a hairspring, a balance wheel, an escapement fork and an escape wheel. The hairspring is provided on the balance wheel. The escapement fork is provided between the balance wheel and the escape wheel. Escapement fork pieces are provided on the escapement fork.

[0058] The drive assembly includes a swinging member, a reset unlocking lever, a sector gear, a second hand locking fork and an adjusting rod. The swinging member, the sector gear and the second hand locking fork are coaxially arranged. The swinging member is connected to the sector gear through a return spring 405. The sector gear meshes with the first transmission gear. The swinging member drives the second hand locking fork to rotate through the reset unlocking lever. The swinging member is connected to a timing trigger piston, and the timing trigger piston is connected to a reversing air valve. A reset spring 405 is provided on the swinging member. The second hand locking fork is coaxial with the sector gear. The adjusting rod is provided on the second hand locking fork. The adjusting rod is connected to the reversing air valve through a first spring 405 and a micro-pressure balance valve thimble 302.

[0059] The specific usage steps are as follows:

[0060] 1. First, set the time through the timing setting mechanism so that the duration setting wheel rotates to the desired position;

[0061] 2. Then, input gas through the air inlet nozzle joint 201. The gas cannot enter the first air chamber 206 and the second lower air chamber 208. The gas enters the third air chamber 209 through the first air pipe 210, the second air pipe 211 and the fourth air pipe 213, driving the timing trigger piston to extend. The gas reaches the second upper air chamber 207 through the second air pipe 211 and the third air pipe 212;

[0062] 3. The timing trigger piston drives the swinging member to rotate clockwise. The return spring 405 transmits the force to the sector gear, which starts to rotate clockwise. The first transmission gear rotates counterclockwise to the required position. The second hand locking fork engages with the first transmission gear. Instantly, under the action of the first spring 405, the adjusting rod is lifted upward. The micro-pressure balance valve thimble 302 loses pressure and moves upward. The gas lifts the first gasket 305, allowing the gas to reach the second lower air chamber 208 through the fifth gas pipeline 214, pushing the valve stem 401 upward, causing the second gasket 403 in the second upper air chamber 207 to be lifted. The gas in the first gas pipeline 210 enters the third gas pipeline 212 through the second gas pipeline 211 and enters the second upper air chamber 207. Then, it passes through the connecting pipe 217, through the sixth gas pipeline 216, and is output through the air outlet nozzle joint 202. The timing ends, achieving the connection between the air inlet nozzle joint 201 and the air outlet nozzle joint 202.

[0063] 4. The air inlet nozzle joint 201 stops supplying gas, and there is no gas at the air outlet nozzle joint 202. The timing trigger piston moves downward, and the return spring 405 pulls back, causing the swinging member to rotate to the reset position, driving the reset unlocking lever to rotate, and pushing the second hand locking fork away from the first transmission gear. At this time, the sector gear rotates counterclockwise under the action of the return spring 405. The micro-pressure balance valve thimble 302 presses downward, blocking the gas path connecting the first air chamber 206 and the first gas pipeline 210. The gas in the second lower air chamber 208 is discharged to the atmosphere through the fifth gas pipeline 214, through the channel and the shaft hole. The gas in the pipeline connected to the air outlet nozzle joint 202 will be discharged to the atmosphere through the sixth gas pipeline 216, through the connecting pipe 217, and through the exhaust pipe 215.

[0064] 5. During the reset process, the double ratchet assembly is used to ensure that the gear transmission assembly does not rotate, thereby protecting the escapement assembly and the gear transmission assembly.

[0065] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to achieve substantially the same technical effects are all covered by the protection scope of the present invention.

Claims

1. A reversing valve with a working cylinder that can be automatically reset, characterized in that: including a valve body, in which an air passage is provided; at least one first air chamber, in which a micro-pressure balance valve is provided for controlling the opening and closing of the first air chamber; at least one second upper air chamber and at least one second lower air chamber, the second upper air chamber is communicated with the second lower air chamber through a connecting pipe, and a piston mechanism is provided in the second upper air chamber, the connecting pipe and the second lower air chamber for controlling the opening and closing of the second upper air chamber and the second lower air chamber; and at least one third air chamber for installing a timing trigger piston; the air passage includes a first air pipe, a second air pipe, a third air pipe, a fourth air pipe, a fifth air pipe, an exhaust pipe and a sixth air pipe, the first air pipe is communicated with the first air chamber, the first air pipe is communicated with the third air pipe and the fourth air pipe through the second air pipe, the third air pipe and the fourth air pipe are respectively communicated with the second upper air chamber and the third air chamber, the first air chamber is communicated with the second lower air chamber through the fifth air pipe, the exhaust pipe is provided in the second lower air chamber, and the connecting pipe is communicated with the sixth air pipe; the first air pipe is communicated with an air inlet nozzle joint, and the sixth air pipe is communicated with an air outlet nozzle joint; after the gas enters the air passage, by making the timing trigger piston extend, driving the mechanical transmission mechanism to act, and then driving the micro-pressure balance valve to act, so that the piston mechanism moves, realizing that the air inlet nozzle joint and the air outlet nozzle joint are communicated at the end of timing.

2. A self - resetting reversing valve with a working cylinder according to claim 1, characterized in that: The air inlet port of the exhaust pipe is located above the air outlet port of the fifth air pipe.

3. The automatic resetting reversing valve with a working cylinder according to claim 2, characterized in that: The piston mechanism includes a valve rod, a valve core and a second sealing gasket, the second sealing gasket and the valve core are located at both ends of the valve rod, the second sealing gasket is located in the second upper air chamber, and the valve core is located in the second lower air chamber.

4. The automatic resetting reversing valve with a working cylinder according to claim 3, characterized in that: The second upper air chamber is provided with an air chamber plug, and the second sealing gasket is connected to the air chamber plug through a spring.

5. A self - resetting reversing valve with a working cylinder according to claim 3, characterized in that: The bottom of the valve core is located above the air outlet port of the fifth air pipe.

6. The automatic resetting reversing valve with a working cylinder according to claim 3, characterized in that: The size of the second lower air chamber is larger than that of the second upper air chamber.

7. A self - resetting reversing valve with a working cylinder according to any one of claims 1 to 6, characterized in that: The micro-pressure balance valve includes a micro-pressure balance valve body, a pushing component and a first sealing gasket, the micro-pressure balance valve body is arranged in the first air chamber, semi-circular blocks are symmetrically arranged on the micro-pressure balance valve body, the first sealing gasket is located in the cavity formed by the two semi-circular blocks, and the pushing component drives the first sealing gasket to move along the cavity.

8. A self-resetting reversing valve with a working cylinder according to claim 7, characterized in that: The pushing component includes a micro-pressure balance valve thimble, a pushing block and an extrusion block, the extrusion block is fixed on the pushing block, a second ventilation groove is arranged on the extrusion block, the second ventilation groove is communicated with the cavity, a first through hole and a second through hole are arranged on the micro-pressure balance valve body, the second through hole is communicated with the cavity through the first through hole, and the micro-pressure balance valve thimble drives the extrusion block to move through the pushing block, realizing the pressing or loosening of the first sealing gasket.

9. A self - resetting reversing valve with a working cylinder according to claim 7, characterized in that: A first ventilation groove is formed between the two semi-circular blocks for gas flow.

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