Manual switching device of straight stroke pneumatic actuating mechanism

Abstract

The utility model provides a manual switching device of a straight-stroke pneumatic actuating mechanism, which comprises a shell, a manual piece, a switching assembly, an acting piece and a resetting assembly, and one end of the manual piece is arranged in the shell; the switching assembly is arranged in the shell and connected with the manual part, the acting part is arranged in the shell and connected with the switching assembly, and the switching assembly is configured to receive acting force on the manual part and transmit the acting force to the acting part; the acting piece is configured to be driven by the manual piece to abut against a driving rod in the pneumatic executing mechanism and drive the driving rod to move in the valve opening direction. The reset assembly comprises a reset piece, one end of the reset piece is connected with the shell, the other end of the reset piece is connected with the driving rod, and the reset piece has elastic force for driving the driving rod to move in the valve closing direction. The utility model provides a manual switching device of a straight-stroke pneumatic actuating mechanism, which can avoid the problem that a valve cannot be effectively opened when the pneumatic actuating mechanism breaks down or emergency operation is needed.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to a straight stroke pneumatic actuator manual switching device. BACKGROUND

[0002] With the improvement of automation degree, the straight stroke valve, gate and other parts in various fields gradually realize the replacement of original manual operation by pneumatic actuator, and the pneumatic actuator can realize remote control and on-site state feedback through electrical accessories.

[0003] For example, the utility model patent CN116412292A discloses a quick opening and closing pneumatic actuator for controlling valve, which comprises a valve body, the valve body comprises a connecting flange and a ball mounting seat, the ball mounting seat is fixedly connected with the connecting flange by bolts, an opening and closing ball is inserted into the ball mounting seat, a valve rod is vertically arranged at the top of the opening and closing ball, a valve rod mounting seat is arranged at the top of the ball mounting seat, the valve rod is rotatably inserted into the valve rod mounting seat and the ball mounting seat, a control box is arranged at the top of the valve rod mounting seat, cover plates are arranged on both sides of the control box, a cylinder rod is horizontally inserted into the cover plates, the valve rod extends into the control box, and a transmission assembly for controlling the rotation of the opening and closing ball is arranged at the top of the valve rod.

[0004] However, the internal structure of the current pneumatic actuator is complex, and when the pneumatic actuator fails or needs emergency operation, the valve cannot be effectively opened. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a straight stroke pneumatic actuator manual switching device to solve the problem that the internal structure of the current pneumatic actuator is complex, and when the pneumatic actuator fails or needs emergency operation, the valve cannot be effectively opened.

[0006] In the first aspect, the utility model provides a straight stroke pneumatic actuator manual switching device, which comprises:

[0007] A housing;

[0008] A manual part arranged in the housing;

[0009] An adapter assembly arranged in the housing, the adapter assembly being connected with the manual part;

[0010] An acting part arranged in the housing, the acting part being connected with the adapter assembly, and the adapter assembly being configured to receive the acting force on the manual part and transmit the acting force to the acting part;

[0011] The acting part is configured to be driven by the manual part to abut against a driving rod in the pneumatic actuator and drive the driving rod to move in the opening direction of the valve.

[0012] The reset assembly comprises a reset member, one end of the reset member is connected with the shell, the other end of the reset member is connected with the driving rod, and the reset member has an elastic force for driving the driving rod to move to the valve closing direction.

[0013] In the above structure, the adapter assembly is arranged between the manual member and the acting member, the adapter assembly is used for receiving the acting force on the manual member and transmitting the acting force to the acting member, the acting member is configured to be driven by the manual member to abut against the driving rod in the pneumatic actuator and drive the driving rod to move to the valve opening direction, so that when the valve needs to be manually opened, the user operates the manual member, applies the acting force to the acting member through the adapter assembly, and then drives the acting member to move until the acting member abuts against the driving rod in the pneumatic actuator and drives the driving rod to move to the valve opening direction, so as to manually open the valve. When the valve needs to be closed, the reset assembly is arranged in the utility model, the reset assembly comprises a reset member, one end of the reset member is connected with the shell, the other end of the reset member is connected with the driving rod, and the reset member has an elastic force for driving the driving rod to move to the valve closing direction, so that the user operates the manual member, applies the reverse acting force to the acting member through the adapter assembly, and then drives the acting member to move to separate the acting member from the driving rod, at this time, the driving rod is reset by the elastic force of the reset member to achieve the closing of the valve.

[0014] In an optional embodiment, the acting member is internally provided with a through cavity, and the through cavity is internally adapted to movably arrange the driving rod;

[0015] The through cavity wall of the acting member is provided with an abutting portion, the circumferential side of the driving rod is provided with an abutting adaptation portion, and the abutting portion is adapted to abut against the abutting adaptation portion to drive the driving rod to move to the valve opening direction.

[0016] In the above structure, the through cavity wall of the acting member is provided with the abutting portion, and the circumferential side of the driving rod is provided with the abutting adaptation portion. When the valve needs to be manually opened, the user operates the manual member, applies the acting force to the acting member through the adapter assembly, and then drives the acting member to move until the through cavity wall of the acting member is provided with the abutting portion and the circumferential side of the driving rod in the pneumatic actuator is provided with the abutting adaptation portion, so as to realize the movement of the acting member driving the driving rod, thereby manually opening the valve.

[0017] In an optional embodiment, the abutting portion is a stepped structure arranged on the through cavity wall of the acting member, and the abutting adaptation portion is a stepped structure arranged on the circumferential side of the driving rod.

[0018] In an optional embodiment, the through cavity in the interior of the acting member is a polygon, and the outer surface of the driving rod is a polygon adapted to the through cavity in the interior of the acting member.

[0019] In the structure, the through cavity inside the acting member is octagonal, and the outer surface of the driving rod is also octagonal, so that the driving rod can only slide in the through cavity inside the acting member and cannot rotate.

[0020] In an alternative embodiment, the adapter assembly comprises:

[0021] a turbine connected with the manual member, the turbine being configured to rotate driven by the manual member;

[0022] the acting member is connected with the turbine, and the acting member is configured to move driven by the turbine.

[0023] In an alternative embodiment, a through hole is arranged in the turbine, an inner thread is arranged on the inner wall of the through hole, the acting member is inserted into the through hole of the turbine, and the surface of the driving section of the acting member is provided with an outer thread matched with the inner thread;

[0024] the acting member is configured to move along the axis direction of the acting member driven by the turbine.

[0025] In an alternative embodiment, a limiting plate is arranged in the shell, and a polygonal limiting hole is arranged on the limiting plate;

[0026] the acting member is arranged in the polygonal limiting hole, and the acting member comprises a limiting section, the limiting section is arranged in the polygonal limiting hole in a sliding manner, and the outer surface of the limiting section is a polygon matched with the polygonal limiting hole.

[0027] In the structure, the limiting plate is provided with an octagonal limiting hole, and the outer surface of the limiting section is an octagonal structure matched with the octagonal limiting hole. Similarly, by arranging the octagonal limiting hole on the limiting plate and the octagonal limiting section arranged in the octagonal limiting hole in a sliding manner, the acting member can only move up and down in the shell and cannot rotate.

[0028] In an alternative embodiment, the acting member further comprises a stop section arranged between the driving section and the limiting section, and the stop section is configured to abut against the side surface of the limiting plate to limit the movement of the acting member along the axis direction of the acting member.

[0029] In the structure, the stop section is arranged between the driving section and the limiting section, and the stop section is used to limit the displacement distance of the acting member. In the utility model, the diameter of the stop section is greater than the diameter of the limiting section, so that the stop section can abut against the bottom surface of the limiting plate, and the displacement distance of the acting member is limited.

[0030] In an alternative embodiment, the reset assembly further comprises:

[0031] a frame connected with the housing, the reset member being arranged in the frame;

[0032] a sliding plate slidingly arranged in the frame, one end of the reset member being connected with the frame, the other end of the reset member being connected with the sliding plate, the acting member penetrating through the sliding plate and being fixed with the sliding plate.

[0033] In an alternative embodiment, the reset assembly further comprises a telescopic rod sleeved in the reset member.

[0034] The straight stroke pneumatic actuator manual switching device has the following advantages:

[0035] 1. The straight stroke pneumatic actuator manual switching device comprises a housing, a manual member, an adapter assembly, an acting member and a reset assembly, one end of the manual member being arranged in the housing; the adapter assembly is arranged in the housing, the adapter assembly being connected with the manual member, the acting member being arranged in the housing, the acting member being connected with the adapter assembly, the adapter assembly being configured to receive the acting force on the manual member and transmit the acting force to the acting member; the acting member is configured to be driven by the manual member to abut against the driving rod in the pneumatic actuator and drive the driving rod to move in the opening valve direction; the reset assembly comprises a reset member, one end of the reset member being connected with the housing, the other end of the reset member being connected with the driving rod, the reset member having an elastic force for driving the driving rod to move in the closing valve direction.

[0036] In the above structure, the adapter assembly is arranged between the manual member and the acting member, the adapter assembly is used to receive the acting force on the manual member and transmit the acting force to the acting member, the acting member is configured to be driven by the manual member to abut against the driving rod in the pneumatic actuator and drive the driving rod to move in the opening valve direction, so that when the valve needs to be manually opened, the user operates the manual member, applies the acting force to the acting member through the adapter assembly, and then drives the acting member to move until the acting member abuts against the driving rod in the pneumatic actuator and drives the driving rod to move in the opening valve direction, so as to manually open the valve. When the valve needs to be closed, the reset assembly is arranged in the utility model, the reset assembly comprises a reset member, one end of the reset member being connected with the housing, the other end of the reset member being connected with the driving rod, the reset member having an elastic force for driving the driving rod to move in the closing valve direction, so that the user operates the manual member, applies the reverse acting force to the acting member through the adapter assembly, and then drives the acting member to move so that the acting member is separated from the driving rod, at this time, the driving rod is reset by the elastic force of the reset member to realize the closing of the valve.

[0037] 2. The straight stroke pneumatic actuator manual switching device provided by the utility model, the inside of the acting piece is provided with a through cavity, and the inside of the through cavity is provided with a driving rod which is movably arranged; wherein, the through cavity wall of the acting piece is provided with an abutting part, the periphery of the driving rod is provided with an abutting matching part, the abutting part is suitable for abutting with the abutting matching part to drive the driving rod to move to the valve opening direction.

[0038] In the above structure, the through cavity wall of the acting piece is provided with an abutting part, and the periphery of the driving rod is provided with an abutting matching part. When the valve needs to be manually opened, the user operates the manual part to apply force to the acting piece through the adapter assembly, and then moves the acting piece until the abutting part on the through cavity wall of the acting piece abuts with the abutting matching part on the periphery of the driving rod in the pneumatic actuator, so that the acting piece drives the movement of the driving rod to manually open the valve.

[0039] 3. The straight stroke pneumatic actuator manual switching device provided by the utility model, the inside of the acting piece is provided with a through cavity, and the inside of the through cavity is provided with a driving rod which is movably arranged; wherein, the through cavity wall of the acting piece is provided with an abutting part, the periphery of the driving rod is provided with an abutting matching part, the abutting part is suitable for abutting with the abutting matching part to drive the driving rod to move to the valve opening direction.

[0040] In the above structure, the through cavity of the acting piece is octagonal, and the outer surface of the acting piece is also octagonal, so that the acting piece can only slide in the through cavity of the acting piece and cannot rotate.

[0041] 4. The straight stroke pneumatic actuator manual switching device provided by the utility model, the inside of the acting piece is provided with a through cavity, and the inside of the through cavity is provided with a driving rod which is movably arranged; wherein, the through cavity wall of the acting piece is provided with an abutting part, the periphery of the driving rod is provided with an abutting matching part, the abutting part is suitable for abutting with the abutting matching part to drive the driving rod to move to the valve opening direction.

[0042] In the above structure, the through cavity of the acting piece is octagonal, and the outer surface of the acting piece is also octagonal, so that the acting piece can only slide in the through cavity of the acting piece and cannot rotate.

[0043] 5. The straight stroke pneumatic actuator manual switching device provided by the utility model, the acting piece further comprises a stop segment, the stop segment is arranged between the driving segment and the limiting segment, and the stop segment is configured to abut with the side surface of the limiting plate to limit the movement of the acting piece along the acting piece axis.

[0044] In the above structure, the stop segment is arranged between the driving segment and the limiting segment, and the stop segment is used to limit the displacement distance of the acting piece. In the utility model, the diameter of the stop segment is greater than the diameter of the limiting segment, so that the stop segment can abut with the bottom surface of the limiting plate to limit the displacement distance of the acting piece. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the following description of the specific embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0046] Figure 1 A front view of the straight stroke pneumatic actuator manual switching device provided in the embodiments of the present application;

[0047] Figure 2 A structure schematic view of the adapter assembly in the straight stroke pneumatic actuator manual switching device provided in the embodiments of the present application;

[0048] Figure 3 A structure schematic view of the driving rod in the straight stroke pneumatic actuator manual switching device provided in the embodiments of the present application when the driving rod is in a free position;

[0049] Figure 4 A structure schematic view of the driving rod in the straight stroke pneumatic actuator manual switching device provided in the embodiments of the present application when the driving rod is in a manual opening position;

[0050] Figure 5 A structure schematic view of the driving rod in the straight stroke pneumatic actuator manual switching device provided in the embodiments of the present application when the driving rod is in a manual closing position;

[0051] Figure 6 A Figure 5 A sectional view at B-B.

[0052] BRIEF DESCRIPTION OF DRAWINGS

[0053] 1-outer shell; 11-limiting plate;

[0054] 2-manual part;

[0055] 31-turbine;

[0056] 41-limiting section; 42-driving section; 43-stopping section;

[0057] 51-resetting part; 52-frame; 53-sliding plate; 54-telescopic rod;

[0058] 6-driving rod. DETAILED DESCRIPTION

[0059] The technical solutions of the present application will be described clearly and completely below with reference to 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 efforts fall within the scope of the present application.

[0060] 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 based on 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 limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0061] Embodiment

[0062] The present embodiment provides a kind of straight stroke pneumatic actuator manual switching device, including shell 1, manual piece 2, adapter assembly, acting piece and reset component, manual piece 2 one end is located in shell 1;Adapter assembly is located in shell 1, adapter assembly is connected with manual piece 2, acting piece is located in shell 1, acting piece is connected with adapter assembly, adapter assembly is configured to receive the force on manual piece 2 and transmit the force to acting piece;Acting piece is configured to be driven by manual piece 2 and abut with driving rod 6 in pneumatic actuator and drive driving rod 6 to the direction of movement of opening valve;Reset component includes reset piece 51, reset piece 51 one end is connected with shell 1, reset piece 51 other end is connected with driving rod 6, reset piece 51 has the elastic force of driving driving rod 6 to the direction of movement of closing valve.

[0063] In the embodiment, the adapter assembly is arranged between the manual member 2 and the acting member, and is configured to receive the force applied by the manual member 2 and transmit the force to the acting member. The acting member is configured to be driven by the manual member 2 to abut against the driving rod 6 in the pneumatic actuator and drive the driving rod 6 to move in the valve opening direction. Therefore, when the valve needs to be manually opened, the user operates the manual member 2 to apply a force to the acting member through the adapter assembly, and then drives the acting member to move until the acting member abuts against the driving rod 6 in the pneumatic actuator and drives the driving rod 6 to move in the valve opening direction, so as to manually open the valve. When the valve needs to be closed, the reset assembly is arranged in the embodiment, and the reset assembly includes a reset member 51. One end of the reset member 51 is connected to the housing 1, and the other end of the reset member 51 is connected to the driving rod 6. The reset member 51 has an elastic force to drive the driving rod 6 to move in the valve closing direction. Therefore, the user operates the manual member 2 to apply a reverse force to the acting member through the adapter assembly, and then drives the acting member to move so that the acting member is separated from the driving rod 6. At this time, the driving rod 6 is reset by the elastic force of the reset member 51 to achieve the closing of the valve.

[0064] In the embodiment, as shown in Figure 3 , the acting member includes a limiting section 41, a driving section 42, and a stop section 43. The stop section 43 is arranged between the limiting section 41 and the driving section 42.

[0065] In the embodiment, the acting member is internally provided with a through cavity. The driving rod 6 is movably arranged in the through cavity. The through cavity wall of the acting member is provided with an abutting portion. The driving rod 6 is provided with an abutting adaptation portion on the peripheral side. The abutting portion is adapted to abut against the abutting adaptation portion to drive the driving rod 6 to move in the valve opening direction.

[0066] By arranging the abutting portion on the through cavity wall of the acting member and the abutting adaptation portion on the peripheral side of the driving rod 6, when the valve needs to be manually opened, the user operates the manual member 2 to apply a force to the acting member through the adapter assembly, and then drives the acting member to move until the abutting portion arranged on the through cavity wall of the acting member abuts against the abutting adaptation portion arranged on the peripheral side of the driving rod 6 in the pneumatic actuator, so as to drive the acting member to move the driving rod 6, thereby manually opening the valve.

[0067] In the embodiment, as shown in Figures 3 to 5 , the abutting portion is a stepped structure arranged on the through cavity wall of the acting member, and the abutting adaptation portion is a stepped structure arranged on the peripheral side of the driving rod 6. The valve opening direction is the upward direction in Figures 3 to 5 , and the valve closing direction is the downward direction in Figures 3 to 5 .

[0068] In the embodiment, the through cavity in the acting member is a polygon, and the outer surface of the driving rod 6 is a polygon adapted to the through cavity in the acting member. As shown inFigure 6 As shown, the through cavity inside the acting member is octagonal, and the outer surface of the driving rod 6 is also octagonal, so that the driving rod 6 can only slide inside the through cavity of the acting member and cannot rotate.

[0069] In the embodiment, as shown in the figure, Figure 2 The adapter assembly includes a turbine 31 connected with the manual member 2, and the turbine 31 is configured to be driven by the manual member 2 to rotate; the acting member is connected with the turbine 31 and is configured to be driven by the turbine 31 to move. By connecting the turbine 31 with the manual member 2, the acting member is the joint of the worm and the turntable, and the acting member is connected with the turbine 31 through the worm. By rotating the turntable, the turbine 31 can be driven to rotate through the worm.

[0070] In the embodiment, the turbine 31 is provided with a through hole, the inner wall of the through hole is provided with an internal thread, the acting member is inserted into the through hole of the turbine 31, and the surface of the driving section 42 on the acting member is provided with an external thread matched with the internal thread; the acting member is configured to be driven by the turbine 31 to move along the acting member axis direction.

[0071] By providing the turbine 31 with a through hole, the inner wall of the through hole is provided with an internal thread, and the acting member is inserted into the through hole of the turbine 31 and provided with an external thread matched with the internal thread. When the turbine 31 is driven to rotate by the manual member 2, the acting member can be driven to move up or down through the thread cooperation.

[0072] In the embodiment, as shown in the figure, Figure 3 The shell 1 is provided with a limiting plate 11, and the limiting plate 11 is provided with a polygonal limiting hole; the acting member is inserted into the polygonal limiting hole, and the acting member includes a limiting section 41 which is adapted to be slidingly arranged in the polygonal limiting hole, and the outer surface of the limiting section 41 is a polygon which is adapted to the polygonal limiting hole.

[0073] As shown in the figure, Figure 6 The limiting plate 11 is provided with an octagonal limiting hole, and the outer surface of the limiting section 41 is an octagonal structure which is adapted to the octagonal limiting hole. Similarly, by providing the limiting plate 11 with an octagonal limiting hole and the limiting section 41 with an octagonal outer surface, the limiting section 41 is slidingly arranged in the octagonal limiting hole of the limiting plate 11, so that the acting member can only move up and down in the shell and cannot rotate.

[0074] In the embodiment, as shown in the figure, Figure 3 The acting member further includes a stop section 43 which is arranged between the driving section 42 and the limiting section 41, and the stop section 43 is configured to abut against the side surface of the limiting plate 11 to limit the movement of the acting member along the acting member axis direction.

[0075] By setting the stop segment 43, and the stop segment 43 is set between the driving segment 42 and the limiting segment 41, the stop segment 43 is used for limiting the displacement distance of the acting piece. In the embodiment, the diameter of the stop segment 43 is greater than the diameter of the limiting segment 41, so that the stop segment 43 can abut against the bottom surface of the limiting plate 11, and the displacement distance of the acting piece is limited.

[0076] In the embodiment, the reset assembly further comprises a frame 52, a sliding plate 53 and a telescopic rod 54.

[0077] The frame 52 is connected with the shell 1, the reset piece 51 is arranged in the frame 52, the sliding plate 53 is slidingly arranged in the frame 52, one end of the reset piece 51 is connected with the frame 52, the other end of the reset piece 51 is connected with the sliding plate 53, and the acting piece penetrates through the sliding plate 53 and is fixed with the sliding plate 53.

[0078] As shown in Figure 1 The frame 52 is fixed at the bottom of the shell 1, the acting piece penetrates through the frame 52 and extends into the inside of the shell 1, the number of the reset piece 51 is four, the sliding plate 53 is slidingly arranged in the frame 52, and the acting piece penetrates through the sliding plate 53 and is fixed with the sliding plate 53, so that when the valve needs to be manually opened, the user operates the manual piece 2, applies a force to the acting piece through the adapter assembly, drives the acting piece to move until the acting piece abuts against the driving rod 6 in the pneumatic actuator and drives the driving rod 6 to move in the direction of opening the valve, so as to manually open the valve, at this time, the sliding plate 53 moves upward with the acting piece and compresses the reset piece 51. When the valve needs to be closed, the user operates the manual piece 2, applies a reverse force to the acting piece through the adapter assembly, and drives the acting piece to move so that the acting piece is separated from the driving rod 6, at this time, the reset piece 51 pushes the sliding plate 53 to move downward and reset, and the sliding plate 53 drives the acting piece to move downward to close the valve.

[0079] In the embodiment, the telescopic rod 54 is sleeved in the reset piece 51, the upper end of the telescopic rod 54 is connected with the frame 52, and the lower end of the telescopic rod 54 is connected with the sliding plate 53. By setting the telescopic rod 54, the reset piece 51 can be limited.

[0080] Obviously, the above embodiments are only examples for clearly illustrating, and not limit the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments cannot be exhausted, and the obvious changes or variations still fall within the protection scope of the utility model.

Claims

1. A manual switching device for a linear pneumatic actuator, characterized in that, include: Outer shell (1); Manual component (2), one end of which is located inside the outer casing (1); An adapter assembly is disposed inside the housing (1), and the adapter assembly is connected to the manual component (2); An action element is disposed within the housing (1), the action element is connected to the adapter assembly, the adapter assembly is configured to receive the force on the manual element (2) and transmit the force to the action element; The actuating element is configured to be driven by the manual element (2) to abut against the drive rod (6) in the pneumatic actuator and drive the drive rod (6) to move in the direction of opening the valve; The reset assembly includes a reset member (51), one end of which is connected to the housing (1) and the other end of which is connected to the drive rod (6). The reset member (51) has an elastic force that drives the drive rod (6) to move in the direction of closing the valve.

2. The manual switching device for a linear pneumatic actuator according to claim 1, characterized in that, The working component has a through cavity inside, and the drive rod (6) is movably arranged inside the through cavity; The cavity wall of the actuating member is provided with an abutment part, and the drive rod (6) is provided with an abutment adapter part on its periphery. The abutment part is adapted to abut against the abutment adapter part so as to drive the drive rod (6) to move in the direction of opening the valve.

3. The manual switching device for a linear pneumatic actuator according to claim 2, characterized in that, The abutting part is a stepped structure provided on the cavity wall of the actuating member, and the abutting adapter part is a stepped structure provided on the periphery of the driving rod (6).

4. The manual switching device for a linear pneumatic actuator according to claim 2, characterized in that, The cavity inside the actuating element is polygonal, and the outer surface of the driving rod (6) is a polygonal shape that matches the cavity inside the actuating element.

5. The manual switching device for a linear pneumatic actuator according to any one of claims 1-4, characterized in that, The adapter component includes: A turbine (31) is connected to the manual component (2) and is configured to be driven to rotate by the manual component (2); The actuating element is connected to the turbine (31) and is configured to move under the drive of the turbine (31).

6. The manual switching device for a linear pneumatic actuator according to claim 5, characterized in that, The turbine (31) has a through hole, the inner wall of the through hole has an internal thread, the actuating element is inserted into the through hole of the turbine (31), and the surface of the driving section (42) on the actuating element has an external thread that mates with the internal thread; The actuator is configured to be driven by the turbine (31) to move along the axis of the actuator.

7. The manual switching device for a linear pneumatic actuator according to claim 6, characterized in that, The outer shell (1) is provided with a limiting plate (11), and the limiting plate (11) is provided with polygonal limiting holes; The actuating element is inserted into the polygonal limiting hole, and the actuating element includes a limiting segment (41), the limiting segment (41) is adapted to be slidably disposed in the polygonal limiting hole, and the outer surface of the limiting segment (41) is a polygon adapted to the polygonal limiting hole.

8. The manual switching device for a linear pneumatic actuator according to claim 7, characterized in that, The actuating member further includes a stop section (43) disposed between the driving section (42) and the limiting section (41), and the stop section (43) is configured to abut against the side of the limiting plate (11) to restrict the movement of the actuating member along the axis of the actuating member.

9. The manual switching device for a linear pneumatic actuator according to claim 1, characterized in that, The reset component further includes: A frame (52) is connected to the outer shell (1), and the reset member (51) is disposed within the frame (52); A sliding plate (53) is slidably disposed within the frame (52). One end of the reset member (51) is connected to the frame (52), and the other end of the reset member (51) is connected to the sliding plate (53). The actuating member passes through the sliding plate (53) and is fixed to the sliding plate (53).

10. The manual switching device for a linear pneumatic actuator according to claim 9, characterized in that, The reset assembly also includes a telescopic rod (54), which is sleeved inside the reset member (51).

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