Pneumatic practical training platform for tobacco cutter

Abstract

The utility model relates to the technical field of teaching aids, and particularly discloses a pneumatic practical training platform for a tobacco cutter, which comprises an operation panel, an air source connection joint, a filtering and pressure reducing assembly and a knife door control loop. When actual operation is carried out, firstly, the air source supply equipment is communicated with the air source connecting connector, the air source supply equipment conveys compressed air to the air source connecting connector, then the compressed air is filtered and decompressed through the filtering and decompressing assembly and then enters the first reversing valve, and at the moment, the first reversing valve is communicated with the second reversing valve; and finally, the tobacco leaves enter an air cylinder of the cutter door executing mechanism, the cutter door executing mechanism is controlled to ascend and descend by changing a circulation channel between the second reversing valve and the air cylinder, and then the shredding purpose is achieved. According to the scheme, the operation state of the tobacco cutter pneumatic system in actual production can be simulated, and the problems that the tobacco cutter pneumatic system in actual production cannot be subjected to disassembly and assembly debugging training, so that students cannot be subjected to teaching, and the engineering contradiction is prominent are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to teaching aid technical field especially, it is a kind of cutting machine pneumatic practical training platform. BACKGROUND

[0002] Cutting machine as important production host equipment of silk making workshop, it is also important teaching equipment of daily teaching and training. At present, due to the busy production task of silk making workshop in daily cutting, student cannot be trained on machine, especially pneumatic system module, equipment cannot open side cabinet to carry out disassembly debugging training in the process of operation, and the contradiction between work and study is outstanding, and the execution of cutting machine pneumatic system cannot be understood on site. Therefore, it is necessary to design a set of cutting machine pneumatic system for teaching. INVENTION CONTENT

[0003] The utility model is to provide a kind of cutting machine pneumatic practical training platform, to solve the cutting machine pneumatic system in actual production, cannot carry out disassembly debugging training, lead to the problem of not being able to teach student.

[0004] To solve the above problems, the utility model provides a kind of cutting machine pneumatic practical training platform, the cutting machine pneumatic practical training platform includes operation board;Gas source connects connector, is set on operation board, and can be communicated with gas source supply equipment;Filtering pressure reducing component, is set on operation board, the import of filtering pressure reducing component is communicated with gas source connects connector, filtering pressure reducing component can filter and reduce the pressure of gas flowing;Knife door control loop, including first reversing valve, second reversing valve and knife door actuating mechanism, first reversing valve, second reversing valve and knife door actuating mechanism are all set on operation board, the import of first reversing valve is communicated with the export of filtering pressure reducing component, the export of first reversing valve and the import of second reversing valve are communicated with the export of first reversing valve and the import of second reversing valve can be connected and disconnected, the export of second reversing valve and the cylinder of knife door actuating mechanism are communicated, and second reversing valve controls the lifting of knife door actuating mechanism by changing the flow path with cylinder.

[0005] As optional technical scheme of cutting machine pneumatic practical training platform, filtering pressure reducing component includes first water separation filter and first pressure reducing valve, the import of first water separation filter and gas source connects connector, the export of first water separation filter and the import of first pressure reducing valve are communicated, the export of first pressure reducing valve and the import of first reversing valve are communicated, and first water separation filter is used to filter the gas source that enters from gas source connects connector, and first pressure reducing valve is used to reduce the gas source that first water separation filter filters is completed.

[0006] As optional technical scheme of cutting machine pneumatic practical training platform, first reversing valve is two-position three-way electromagnetic reversing valve, and second reversing valve is three-position five-way electromagnetic reversing valve, and three-position five-way electromagnetic reversing valve has two exhaust ports, and two exhaust ports are communicated with the two ends of cylinder respectively, and exhaust port is used to discharge the gas in cylinder.

[0007] As an optional technical scheme of the tobacco cutter pneumatic practical training platform, the knife door control circuit further comprises a first one-way throttle valve and a second one-way throttle valve, the first one-way throttle valve is arranged on a pipeline connecting a first outlet of the three-position five-way electromagnetic reversing valve and a cylinder descending inlet, and is used for adjusting a descending speed of the knife door actuator, and the second one-way throttle valve is arranged on a pipeline connecting a second outlet of the three-position five-way electromagnetic reversing valve and a cylinder ascending inlet, and is used for adjusting an ascending speed of the knife door actuator.

[0008] As an optional technical scheme of the tobacco cutter pneumatic practical training platform, the knife door control circuit further comprises a proportional pressure reducing valve, an inlet of the proportional pressure reducing valve is communicated with an outlet of the first reversing valve, and an outlet of the proportional pressure reducing valve is communicated with an inlet of the second reversing valve.

[0009] As an optional technical scheme of the tobacco cutter pneumatic practical training platform, the knife door control circuit further comprises a pressure switch arranged on the first reversing valve, and the pressure switch can control opening and closing of the first reversing valve by detecting gas pressure entering the first reversing valve.

[0010] As an optional technical scheme of the tobacco cutter pneumatic practical training platform, the tobacco cutter pneumatic practical training platform further comprises a branch module and a clutch control circuit, an inlet of the branch module is communicated with an outlet of the filter pressure reducing assembly, a first outlet of the branch module is communicated with the clutch control circuit, and a second outlet of the branch module is communicated with the first reversing valve, and the clutch control circuit can control a motion state of the knife roller and the knife roller main shaft.

[0011] As an optional technical scheme of the tobacco cutter pneumatic practical training platform, the clutch control circuit comprises a second pressure reducing valve, a third reversing valve and a pneumatic clutch, an inlet of the second pressure reducing valve is communicated with the first outlet of the branch module, an outlet of the second pressure reducing valve is communicated with an inlet of the third reversing valve, and an outlet of the third reversing valve is communicated with the pneumatic clutch in an on-off manner, the second pressure reducing valve is used for reducing pressure of the flowing gas source, and the pneumatic clutch is used for controlling the motion state of the knife roller and the knife roller main shaft.

[0012] As an optional technical scheme of the tobacco cutter pneumatic practical training platform, the tobacco cutter pneumatic practical training platform further comprises a gas source socket arranged on the operation plate, the gas source socket is communicated with the gas source connection joint and is located between the gas source connection joint and the filter pressure reducing assembly, and the gas source socket is used for inserting the pneumatic tool.

[0013] As an optional technical scheme of the tobacco cutter pneumatic practical training platform, the tobacco cutter pneumatic practical training platform further comprises a pressure sensor, and the pressure sensor is arranged on a pipeline connecting the filter pressure reducing assembly and the first reversing valve.

[0014] The tobacco cutter pneumatic practical training platform has the following beneficial effects:

[0015] The utility model provides a kind of cutting machine pneumatic practical training platform, the cutting machine pneumatic practical training platform includes operation board, gas source connects connector, filtration pressure reducing component and knife door control loop. Among them, knife door control loop includes first reversing valve, second reversing valve and knife door actuating mechanism. The cutting machine pneumatic practical training platform designed by the utility model, when actual operation is carried out, first gas supply equipment and gas source connects connector are communicated, gas supply equipment transports compressed air to gas source connects connector, subsequently compressed air is filtered and decompressed by filtration pressure reducing component, then enters first reversing valve, at this time, first reversing valve is communicated second reversing valve, finally enters the cylinder of knife door actuating mechanism, by changing the flow passage of second reversing valve and cylinder, to control knife door actuating mechanism lifting, to realize the purpose of cutting in turn. Utilize the cutting machine pneumatic practical training platform of the utility model, the running state of cutting machine pneumatic system in actual production can be simulated, effectively solve the cutting machine pneumatic system in actual production, cannot be disassembled and debugged training, leading to the problem that student cannot be taught, the problem of prominent contradiction between learning and working. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is the structure diagram of cutting machine pneumatic practical training platform in the utility model embodiment;

[0017] Fig. 2 It is the principle diagram of cutting machine pneumatic practical training platform in the utility model embodiment.

[0018] In the drawing:

[0019] 1, operation board;

[0020] 2, gas source connects connector;

[0021] 3, filtration pressure reducing component;31, first water filter;32, first pressure reducing valve;

[0022] 4, knife door control loop;41, first reversing valve;42, second reversing valve;421, exhaust port;43, knife door actuating mechanism;44, first one-way throttle;45, second one-way throttle;46, proportional pressure reducing valve;47, pressure switch;

[0023] 5, branch module;

[0024] 6, clutch control loop;61, second pressure reducing valve;62, third reversing valve;63, pneumatic clutch;

[0025] 7, gas source socket;

[0026] 8, pressure sensor. DETAILED DESCRIPTION

[0027] The technical solutions of the present application will be described clearly and completely in connection with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0028] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and moreover, the first feature is "above", "above" and "above" of the second feature, which includes the first feature above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature is "below", "below" and "below" of the second feature, which includes the first feature below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0029] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] The embodiments of the present application will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation on the present application.

[0031] As Figs. 1-2As shown, the embodiment provides a tobacco cutter pneumatic practical training platform, which comprises an operation plate 1, a gas source connection joint 2, a filtering and pressure reducing assembly 3 and a cutter door control loop 4. The cutter door control loop 4 comprises a first reversing valve 41, a second reversing valve 42 and a cutter door actuator 43. The filtering and pressure reducing assembly 3 is communicated with the gas source connection joint 2. The first reversing valve 41 is communicated with the outlet of the filtering and pressure reducing assembly 3. The outlet of the first reversing valve 41 is communicatable with the inlet of the second reversing valve 42. The outlet of the second reversing valve 42 is communicated with the cylinder of the cutter door actuator 43. The tobacco cutter pneumatic practical training platform is designed. When the actual operation is carried out, the gas source supply equipment is firstly communicated with the gas source connection joint 2. The gas source supply equipment delivers the compressed air to the gas source connection joint 2. Then the compressed air is filtered and pressure reduced by the filtering and pressure reducing assembly 3. Then the compressed air enters the first reversing valve 41. At this time, the first reversing valve 41 is communicated with the second reversing valve 42. Finally, the compressed air enters the cylinder of the cutter door actuator 43. The flow path of the second reversing valve 42 and the cylinder is changed. Thus the cutter door actuator 43 is controlled to ascend and descend. The purpose of cutting tobacco is achieved. The tobacco cutter pneumatic practical training platform can simulate the running state of the tobacco cutter pneumatic system in the actual production. The problem that the tobacco cutter pneumatic system in the actual production cannot be disassembled, debugged and trained is solved. Thus the problem that students cannot be taught and the problem of prominent work-study contradiction are solved.

[0032] In the embodiment, the filtering and pressure reducing assembly 3 comprises a first water separation filter 31 and a first pressure reducing valve 32. The inlet of the first water separation filter 31 is communicated with the gas source connection joint 2. The outlet of the first water separation filter 31 is communicated with the inlet of the first pressure reducing valve 32. The outlet of the first pressure reducing valve 32 is communicated with the inlet of the first reversing valve 41. In this way, the gas source entering from the gas source connection joint 2 can be filtered. That is, the compressed air input into the tobacco cutter can be filtered and water can be removed. Thus the compressed air is clean and dry. The service life of each element is prolonged. The working reliability is improved. The system pressure can be adjusted by the first pressure reducing valve 32.

[0033] Specifically, in the scheme, the first reversing valve 41 is a two-position three-way electromagnetic reversing valve. The first reversing valve 41 and the second reversing valve 42 are communicated or disconnected by changing the flow path. The second reversing valve 42 is a three-position five-way electromagnetic reversing valve. The cutter door actuator 43 is controlled to ascend and descend by switching the flow path of the three-position five-way electromagnetic reversing valve and the cylinder.

[0034] The three-position five-way electromagnetic reversing valve has two exhaust ports 421. The two exhaust ports 421 are respectively communicated with two ends of the cylinder. The exhaust ports 421 can exhaust the gas in the cylinder.

[0035] Further, the knife door control circuit 4 further comprises a first one-way throttle valve 44 and a second one-way throttle valve 45. By setting the first one-way throttle valve 44 on the pipeline connecting the first outlet of the three-position five-way electromagnetic reversing valve and the cylinder descending inlet, the flow into the cylinder descending inlet can be regulated, so as to control the descending speed of the knife door actuator 43; similarly, by setting the second one-way throttle valve 45 on the pipeline connecting the second outlet of the three-position five-way electromagnetic reversing valve and the cylinder ascending inlet, the flow into the cylinder ascending inlet can be regulated, so as to control the ascending speed of the knife door actuator 43.

[0036] Specifically, the knife door control circuit 4 further comprises a proportional pressure reducing valve 46. The inlet of the proportional pressure reducing valve 46 is connected with the outlet of the first reversing valve 41, and the outlet of the proportional pressure reducing valve 46 is connected with the inlet of the second reversing valve 42. In this way, the compressed air pressure entering the cylinder can be automatically regulated. When the height of the knife door actuator 43 changes, the information is controlled by the electric control system, and the working pressure of the knife door control circuit 4 is proportionally adjusted to ensure the compaction force and the material compaction density.

[0037] In the embodiment, the knife door control circuit 4 further comprises a pressure switch 47 arranged on the first reversing valve 41. In order to ensure the normal operation of the tobacco cutting machine, the air source provided by the outside to the pneumatic system has a pressure range of 0.6-0.8 MPa, and the system adjusts the working pressure accurately by using the filtering pressure reducing assembly 3, and the adjusted working pressure is 0.6 MPa. The pressure switch 47 is arranged to detect the gas pressure entering the first reversing valve 41, and if the working pressure is lower than 0.6 MPa, the equipment will stop running, thereby ensuring the safety of the equipment.

[0038] It should be noted that the working principle of the knife door control circuit 4 is as follows:

[0039] The main function of the knife door control circuit 4 is to drive the compaction device, so that the material in the conveying process can obtain sufficient compaction force, and the height of the knife door actuator 43 can be changed, and the pressure of the proportional pressure reducing valve 46 can be controlled, so that the compaction force changes when the height of the knife door actuator 43 changes, thereby ensuring the compaction density.

[0040] When the knife door ascending and descending three-position switch is set to "0", the first reversing valve 41 and the second reversing valve 42 in the circuit are in the cut-off state, the air source is cut off, and the knife door actuator 43 is not in action.

[0041] When the three-position switch of the knife door is rotated to the down position, the first reversing valve 41 and the second reversing valve 42 work. The compressed air enters the rod cavity of the cylinder through the first reversing valve 41, the proportional pressure reducing valve 46, the second reversing valve 42 and the first one-way throttle valve 44, and the cylinder piston rod and the upper hinge drive the pressure increasing mechanism and the reversing rod to drive the upper row chain and the upper knife door to descend and compact the material. The air in the rodless cavity of the cylinder is discharged into the atmosphere through the exhaust port 421 of the second reversing valve 42.

[0042] When the three-position switch of the knife door is rotated to the up position, the second reversing valve 42 is reversed, and the compressed air enters the rodless cavity of the cylinder. The piston rod and the upper hinge drive the upper row chain and the upper knife door to rise, and the knife door rises. The gas in the rod cavity of the cylinder is discharged into the atmosphere through the exhaust port 421 of the second reversing valve 42.

[0043] Specifically, the tobacco cutting machine pneumatic practical training platform further comprises a branch module 5 and a clutch control circuit 6. The inlet of the branch module 5 is communicated with the outlet of the filtering and pressure reducing assembly 3, the first outlet of the branch module 5 is communicated with the clutch control circuit 6, and the second outlet of the branch module 5 is communicated with the first reversing valve 41. The clutch control circuit 6 can control the motion state of the knife roller and the knife roller spindle.

[0044] The first outlet branch of the branch module 5 is a constant-communication branch, and the second outlet branch is a one-way valve branch, which is communicated with the knife door control circuit 4. The one-way valve functions to prevent the compressed air in the circuit from flowing back and causing the working pressure of the circuit to suddenly drop when the compressed air entering the circuit is interrupted or the pressure drops.

[0045] Further, the clutch control circuit 6 comprises a second pressure reducing valve 61, a third reversing valve 62 and a pneumatic clutch 63. The inlet of the second pressure reducing valve 61 is communicated with the first outlet of the branch module 5, the outlet of the second pressure reducing valve 61 is communicated with the inlet of the third reversing valve 62, and the outlet of the third reversing valve 62 is communicatable with the pneumatic clutch 63. The second pressure reducing valve 61 is used for reducing the pressure of the inflowing air source, and the pneumatic clutch 63 is used for controlling the motion state of the knife roller and the knife roller spindle.

[0046] The main function of the clutch control circuit 6 is to ensure the normal operation of the electric feeding, and to ensure that there is no disordered feeding when the power is off or during maintenance. After the air source is connected, the compressed air passes through the filtering and pressure reducing assembly 3, and then enters the circuit through the branch module 5. When the equipment is powered on, the normally open third reversing valve 62 is closed, and the circuit is cut off. The pneumatic clutch 63 separates the two engaging plates under the action of the spring, and the gas is discharged into the atmosphere through the exhaust hole of the third reversing valve 62. At this time, the knife roller and the knife roller spindle run synchronously with a constant difference, and the feeding is controlled by the electric control system.

[0047] When the device is powered off, the third reversing valve 62 is reversed, and the circuit is connected. The compressed air is re-pressured through the second pressure reducing valve 61 → the third reversing valve 62 → the pneumatic clutch 63, and the two engaging discs are engaged. At this time, the knife roll and the knife roll spindle are completely synchronized, the feed mechanism has no feed movement, and the blade is not fed, ensuring the safety of the device in the power-off state.

[0048] It should be noted that: the pneumatic clutch 63 is provided on the knife roll and the knife roll spindle, which controls the movement state of the knife roll and the knife roll spindle in the power-off state of the tobacco cutter, so that they run synchronously and eliminate disordered feeding. It is convenient for maintenance and adjustment of the knife roll part, such as replacing the tobacco cutting blade. When powered on, the spring separates the two engaging discs, and the constant difference synchronous operation of the knife roll and the knife roll spindle is controlled by the electric control system. When powered off, the compressed air pressure pushes the cylinder to make the two engaging discs engage. At this time, the spindle and the knife roll run at the same speed, and the feed mechanism does not have feed movement.

[0049] Specifically, the tobacco cutter pneumatic practical training platform further comprises a gas source socket 7 provided on the operation panel 1, the gas source socket 7 is in communication with the gas source connection joint 2, and is located between the gas source connection joint 2 and the filtering and pressure reducing assembly 3. The gas source socket 7 can be inserted into the pneumatic tool.

[0050] When the pneumatic tool is inserted, the gas source socket 7 is opened, and the pneumatic tool obtains compressed air. When the pneumatic tool is pulled out, the gas source socket 7 automatically cuts off the gas source.

[0051] It should be noted that: the pneumatic tool branch where the gas source socket 7 is located provides the gas source for the user to provide the gas gun with a one-way valve.

[0052] In this embodiment, the tobacco cutter pneumatic practical training platform further comprises a pressure sensor 8 provided on the pipeline connected between the filtering and pressure reducing assembly 3 and the first reversing valve 41. In this way, the minimum working pressure of the system can be limited. When the input system pressure is lower than the minimum working pressure, the tobacco cutter is powered off or cannot be started. The minimum working pressure of the tobacco cutter pneumatic practical training platform is set to 0.4 MPa. The working pressure of the tobacco cutter pneumatic practical training platform is displayed by the liquid crystal display screen of the pressure sensor 8.

[0053] Optionally, the tobacco cutter pneumatic practical training platform further comprises an oil atomizer, which is arranged between the first reversing valve 41 and the second reversing valve 42. The oil atomizer can atomize and uniformly mix the lubricating oil into the compressed air, and provide lubrication to the second reversing valve 42 and the knife door actuator 43 along with the flow of compressed air, so as to improve the service life and ensure the working reliability of the second reversing valve 42 and the knife door actuator 43.

[0054] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and also impossible to exhaust all the implementation modes. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application claims.

Claims

1. A pneumatic practical training platform for a tobacco cutter, characterized in that, The utility model relates to a kind of knife door control circuit, including: Operation panel (1); Gas source access joint (2) is arranged on the operation panel (1), and can be communicated with gas supply equipment; Filtering and pressure reducing assembly (3) is arranged on the operation panel (1), the inlet of the filtering and pressure reducing assembly (3) is communicated with the gas source access joint (2), and the filtering and pressure reducing assembly (3) can filter and reduce pressure to the gas flowing through; Knife door control loop (4), including first reversing valve (41), second reversing valve (42) and knife door actuator (43), the first reversing valve (41), the second reversing valve (42) and the knife door actuator (43) are all arranged on the operation panel (1), the inlet of the first reversing valve (41) is communicated with the outlet of the filtering and pressure reducing assembly (3), the outlet of the first reversing valve (41) and the inlet of the second reversing valve (42) are communicatably communicated, the outlet of the second reversing valve (42) and the cylinder of the knife door actuator (43) are communicated, and the second reversing valve (42) controls the knife door actuator (43) to rise and fall by changing the flow passage with the cylinder.

2. The platform according to claim 1, wherein, The filtering and pressure reducing assembly (3) includes first water separation filter (31) and first pressure reducing valve (32), the inlet of the first water separation filter (31) is communicated with the gas source access joint (2), the outlet of the first water separation filter (31) is communicated with the inlet of the first pressure reducing valve (32), and the outlet of the first pressure reducing valve (32) is communicated with the inlet of the first reversing valve (41), the first water separation filter (31) is used to filter the gas source entering from the gas source access joint (2), and the first pressure reducing valve (32) is used to reduce the pressure of the gas source filtered by the first water separation filter (31).

3. The platform of claim 1, wherein, The first reversing valve (41) is a two-position three-way electromagnetic reversing valve, the second reversing valve (42) is a three-position five-way electromagnetic reversing valve, the three-position five-way electromagnetic reversing valve has two exhaust ports (421), the two exhaust ports (421) are respectively communicated with two ends of the cylinder, and the exhaust port (421) is used to exhaust the gas in the cylinder.

4. The platform of claim 3, wherein, The knife door control loop (4) further includes first one-way throttle valve (44) and second one-way throttle valve (45), the first one-way throttle valve (44) is arranged on the pipeline communicating the first outlet of the three-position five-way electromagnetic reversing valve and the cylinder descending inlet, and is used to adjust the descending speed of the knife door actuator (43), and the second one-way throttle valve (45) is arranged on the pipeline communicating the second outlet of the three-position five-way electromagnetic reversing valve and the cylinder ascending inlet, and is used to adjust the ascending speed of the knife door actuator (43).

5. The platform of claim 1, wherein, The knife door control loop (4) further includes proportional pressure reducing valve (46), the inlet of the proportional pressure reducing valve (46) is communicated with the outlet of the first reversing valve (41), and the outlet of the proportional pressure reducing valve (46) is communicated with the inlet of the second reversing valve (42).

6. The platform of claim 1, wherein, The knife door control circuit (4) further comprises a pressure switch (47) arranged on the first reversing valve (41), wherein the pressure switch (47) is capable of controlling the opening and closing of the first reversing valve (41) by detecting the pressure of the gas entering the first reversing valve (41).

7. The platform of claim 1, wherein, The pneumatic training platform for the shredder further comprises a branch module (5) and a clutch control circuit (6), wherein the inlet of the branch module (5) is connected to the outlet of the filter and pressure reducing assembly (3), the first outlet of the branch module (5) is connected to the clutch control circuit (6), and the second outlet of the branch module (5) is connected to the first reversing valve (41), and the clutch control circuit (6) is capable of controlling the motion state of the knife roller and the knife roller main shaft.

8. The platform of claim 7, wherein, The clutch control circuit (6) includes a second pressure reducing valve (61), a third reversing valve (62) and a pneumatic clutch (63). The inlet of the second pressure reducing valve (61) is connected to the first outlet of the branch module (5), the outlet of the second pressure reducing valve (61) is connected to the inlet of the third reversing valve (62), and the outlet of the third reversing valve (62) is connected to the pneumatic clutch (63) in an on-off manner. The second pressure reducing valve (61) is used to reduce the pressure of the inflowing air source, and the pneumatic clutch (63) is used to control the movement state of the knife roller and the knife roller main shaft.

9. The platform of any of claims 1-8, wherein, The pneumatic training platform for the shredder further comprises an air source socket (7) provided on the operating panel (1), the air source socket (7) being in communication with the air source connection connector (2) and being located between the air source connection connector (2) and the filter pressure reducing assembly (3), the air source socket (7) being used for inserting a pneumatic tool.

10. The platform of any one of claims 1-8, wherein, The pneumatic training platform for the shredder further comprises a pressure sensor (8), which is arranged on a pipeline connecting the filtering and decompression assembly (3) and the first reversing valve (41).

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