An air valve control device

Abstract

The present application discloses a wind valve control device, which includes a hollow valve body, a wind deflector assembly, a cylinder drive assembly, a cylinder positioning assembly, and a limit seat fixed inside the valve body; the wind deflector assembly includes a rotating shaft, a first wind deflector, a second wind deflector, and a tension spring: the rotating shaft is rotatably installed on the valve body, and one end passes through the valve body and is connected to the cylinder drive assembly; the first wind deflector is fixed on the rotating shaft and can rotate synchronously with the rotating shaft; both ends of the tension spring are respectively arranged between the first wind deflector and the second wind deflector, and are used to make the first wind deflector and the second wind deflector form a complete wind deflector structure; the second wind deflector is provided with a limit portion and a positioning hole, the wind deflector assembly has a closed state, a semi-open state, and a fully open state, and the cylinder drive assembly has a first state and a second state. The three states of the present application can achieve more delicate control compared with the two states of the traditional structure.

Description

Technical Field

[0001] The present invention relates to the field of air valves, and particularly to an air valve control device. Background Art

[0002] An air valve is used to control the air flow in a pipeline. For example, the patent document with publication number CN 116771930 A discloses a ventilation butterfly valve, which includes a valve body. A butterfly plate that can rotate and can open or close the valve body after rotation is arranged inside the valve body. A butterfly plate operating mechanism for driving the butterfly plate to rotate is arranged on the valve body. The butterfly plate operating mechanism includes a valve stem shaft that is arranged on the valve body and can rotate along its own axis. The valve stem shaft is pivotally connected to the back of the butterfly plate. One end of the valve stem shaft is connected to a rocker arm outside the valve body, and the rocker arm is connected to a driving assembly. The valve stem shaft deviates from the center of the butterfly plate and the center of the valve body. The driving assembly includes a tailstock fixed on the valve body and a standard cylinder. The cylinder body of the standard cylinder is hinged to the tailstock, and the piston end of the standard cylinder is hinged to the rocker arm.

[0003] In the above solution, the rotation of the butterfly plate is controlled by a cylinder. The butterfly plate has only two states: closed and open, and there is no intermediate state of the butterfly plate to achieve more delicate control. Summary of the Invention

[0004] In view of the above problems, the present invention provides an air valve control device.

[0005] The technical solution adopted by the present invention is as follows:

[0006] An air valve control device includes a hollow valve body, a wind deflector assembly rotatably installed on the valve body, and a cylinder driving assembly. The air valve control device further includes a cylinder positioning assembly and a limit seat fixed inside the valve body;

[0007] The wind deflector assembly includes a rotating shaft, a first wind deflector, a second wind deflector, and a plurality of tension springs arranged at intervals:

[0008] The rotating shaft is rotatably installed on the valve body. One end of the rotating shaft passes through the valve body and is connected to the cylinder driving assembly. The rotating shaft can rotate under the drive of the cylinder driving assembly;

[0009] The first wind deflector is fixed on the rotating shaft and can rotate synchronously with the rotating shaft. The end of the first wind deflector adjacent to the rotating shaft is a first connection end; the second wind deflector has a second connection end corresponding to the first connection end; both ends of the tension spring are respectively arranged at the first connection end and the second connection end. The tension spring is used to make the first connection end and the second connection end abut against each other, so that the first wind deflector and the second wind deflector form a complete wind deflector structure;

[0010] The second wind deflector is provided with a limiting portion and a positioning hole. The wind deflector assembly has a closed state, a semi-open state, and a fully open state, and the cylinder driving assembly has a first state and a second state;

[0011] When the wind deflector assembly is in the closed state, the cylinder driving assembly is in the first state. The limiting portion is embedded in the limiting seat, and the first wind deflector and the second wind deflector form a complete wind deflector structure, and the wind deflector structure seals the valve body;

[0012] When the wind deflector assembly is in the semi-open state, the cylinder driving assembly is in the second state. The limiting portion is embedded in the limiting seat and the cylinder positioning assembly extends into the positioning hole. The position of the second wind deflector is the same as the position of the second wind deflector when the wind deflector assembly is in the closed state. The first wind deflector rotates by a set angle along with the rotating shaft, the tension spring is stretched and becomes longer, the first connecting end and the second connecting end are separated from each other, and the wind deflector assembly semi-opens the valve body;

[0013] When the wind deflector assembly is in the fully open state, the cylinder driving assembly is in the second state. The cylinder positioning assembly is separated from the positioning hole. The first wind deflector and the second wind deflector form a complete wind deflector structure, and the wind deflector structure rotates by a set angle along with the rotating shaft, and the wind deflector assembly fully opens the valve body.

[0014] In the first wind deflector and the second wind deflector of the present application, a complete wind deflector structure can be formed through the tension spring. Driven by the rotating shaft fixed to the first wind deflector, the wind deflector assembly can have the same closed state and fully open state as the traditional structure; through the cooperation of the cylinder positioning assembly and the positioning hole of the second wind deflector, the second wind deflector can be limited to prevent the second wind deflector from moving along the axial direction of the valve body. Through the cooperation of the limiting portion of the second wind deflector and the limiting seat, the second wind deflector can be limited to move along the radial direction of the valve body, so that the wind deflector assembly of the present application has a semi-open state, that is, the air valve control device of the present application has three states: a closed state, a semi-open state, and a fully open state. Compared with the two states of the traditional structure, more detailed control can be achieved.

[0015] In one embodiment of the present invention, the end face of the first connecting end has a first installation groove, the end face of the second connecting end has a second installation groove, one end of the tension spring is installed in the first installation groove, and the other end is installed in the second installation groove;

[0016] Among the end faces of the first connecting end and the end face of the second connecting end, one has a slot and the other has a plug post. When the first wind deflector and the second wind deflector form a complete wind deflector structure, the end faces of the first connecting end and the second connecting end are abutted against each other, and the plug post is inserted into the slot.

[0017] The design of the first installation groove and the second installation groove can form a space for accommodating the tension spring, so that in the initial state (the first connection end and the second connection end are in contact with each other, and the first wind deflector and the second wind deflector form a complete wind deflector structure), the tension spring is completely hidden in the two installation grooves.

[0018] During actual operation, there are hanging rods in each installation groove, and the ends of the tension spring are hooked on the corresponding hanging rods. During actual operation, the plug post has a conical part. Further, in order to limit the position of the tension spring and prevent the tension spring from moving along the length direction of the hanging rod, there is an annular groove on the hanging rod, and the ends of the tension spring are hooked on the annular groove.

[0019] In one embodiment of the present invention, the limit seat has an anti-pulling-off groove, and when the wind deflector assembly is in the closed state and the semi-open state, the limiting part is embedded in the anti-pulling-off groove.

[0020] When the limiting part is embedded in the anti-pulling-off groove, when the wind deflector assembly is in the semi-open state (the tension spring is deformed and elongated), it can overcome the pulling force of the tension spring and prevent the second wind deflector from moving in the radial direction of the valve body. After the cylinder positioning assembly is disengaged from the positioning hole, the matching form of the limiting part and the anti-pulling-off groove will not block the rotation of the second wind deflector, that is, the semi-open state and the fully open state of the wind deflector assembly can be controlled by the cylinder positioning assembly.

[0021] In one embodiment of the present invention, the second connection end of the second wind deflector is in contact and cooperation with the rotating shaft.

[0022] This cooperation form can ensure the force on the second wind deflector, so that the wind deflector assembly is reliable and stable in force during the switching of each state.

[0023] In one embodiment of the present invention, the part of the second wind deflector away from the rotating shaft has a positioning seat, and the positioning hole is arranged on the positioning seat;

[0024] The cylinder positioning assembly includes:

[0025] A positioning cylinder, arranged on the outside of the valve body;

[0026] A positioning rod, passing through the side wall of the valve body and used for inserting into the positioning hole of the positioning seat.

[0027] In one embodiment of the present invention, the end of the positioning rod is conical.

[0028] The conical design facilitates self-positioning and enables the positioning rod to be reliably inserted into the positioning hole.

[0029] In one embodiment of the present invention, the air valve control device further includes a first limiting strip and a second limiting strip fixed to the inner side of the valve body. When the wind deflector assembly is in the closed state, the periphery of the first wind deflector is in sealing contact and cooperation with the first limiting strip, and the periphery of the second wind deflector is in sealing contact and cooperation with the second limiting strip.

[0030] In this application, the limiting seat and the second limiting strip can be the same component.

[0031] In the traditional structure, the sealing performance is poor. In this application, when the wind deflector assembly is in the closed state, the periphery of the first wind deflector is in sealing contact and cooperation with the first limiting strip, and the periphery of the second wind deflector is in sealing contact and cooperation with the second limiting strip. This application has good sealing performance.

[0032] In one embodiment of the present invention, a crank is fixed to the end of the rotating shaft passing through the valve body. The cylinder driving assembly includes:

[0033] A mounting seat fixed to the outer side wall of the valve body. The mounting seat has an arc-shaped groove, and the arc-shaped groove is arranged around the axis of the rotating shaft;

[0034] A driving cylinder mounted on the mounting seat. The piston rod of the driving cylinder is perpendicular to the axis of the rotating shaft;

[0035] A rotating member. The first end of the rotating member is rotatably mounted on the mounting seat. The axis of rotation of the rotating member coincides with the axis of the rotating shaft. The end of the crank far from the rotating shaft is connected to the rotating member through a fastener passing through the arc-shaped groove;

[0036] A connecting member fixed to the piston rod of the driving cylinder;

[0037] A linkage member. One end of the linkage member is rotatably mounted on the second end of the rotating member, and the other end of the linkage member is rotatably mounted on the connecting member.

[0038] In the traditional structure, the driving cylinder is directly connected to the crank through the linkage member. The line connecting the hinge point of the driving cylinder and the linkage member and the hinge point of the linkage member and the crank is likely to intersect the axis of the rotating shaft (forming a dead point and a transmission angle of zero), and the device may be stuck and unable to move.

[0039] The cylinder driving assembly of this application can ensure that the transmission angle is always greater than zero and there is no dead point through the setting of the arc-shaped groove and the connecting member, and continuous movement can be guaranteed.

[0040] In one embodiment of the present invention, the mounting seat is U-shaped, and the crank is located in the space formed by the mounting seat.

[0041] In one embodiment of the present invention, the axis of the rotating shaft is perpendicular to and intersects the axis of the valve body.

[0042] The beneficial effects of the present invention are as follows: The first wind deflector and the second wind deflector of the present application can form a complete wind deflector structure through a tension spring. Driven by the rotating shaft fixed to the first wind deflector, the wind deflector assembly can have the same closed state and fully opened state as the traditional structure. By the cooperation of the cylinder positioning assembly and the positioning hole of the second wind deflector, the second wind deflector can be limited to prevent it from moving along the axial direction of the valve body. Through the cooperation of the limiting part of the second wind deflector and the limiting seat, the second wind deflector can be limited to move along the radial direction of the valve body, so that the wind deflector assembly of the present application has a semi-opened state, that is, the air valve control device of the present application has three states: a closed state, a semi-opened state, and a fully opened state. Compared with the two states of the traditional structure, more detailed control can be achieved. Description of the Drawings

[0043] Figure 1 is a schematic diagram of the air valve control device when the wind deflector assembly is in the closed state;

[0044] Figure 2 is a schematic diagram of the air valve control device from another angle when the wind deflector assembly is in the closed state;

[0045] Figure 3 is Figure 2 an enlarged view of part A in

[0046] Figure 4 is a schematic diagram of the air valve control device when the cylinder drive assembly is in the second state;

[0047] Figure 5 is a schematic diagram of the air valve control device when the wind deflector assembly is in the semi-opened state;

[0048] Figure 6 is Figure 5 an enlarged view of part B in

[0049] Figure 7 is a schematic diagram of the air valve control device when the wind deflector assembly is in the fully opened state.

[0050] The reference numerals in the drawings are as follows:

[0051] 1. Valve body; 11. Limit seat; 111. Anti-pulling-off groove; 12. First limit strip; 13. Second limit strip; 2. Windshield assembly; 20. Windshield structure; 21. Rotating shaft; 211. Crank; 22. First windshield; 221. First connection end; 2211. First installation groove; 2212. Slot; 23. Second windshield; 231. Second connection end; 2311. Second installation groove; 2312. Plug post; 232. Limiting part; 233. Positioning seat; 2331. Positioning hole; 24. Tension spring; 3. Cylinder driving assembly; 31. Mounting seat; 311. Arc groove; 32. Driving cylinder; 321. Piston rod; 33. Rotating part; 34. Fastener; 35. Connecting part; 36. Linking part; 4. Cylinder positioning assembly; 41. Positioning cylinder; 42. Positioning rod. Detailed implementation mode

[0052] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0053] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this application is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, terms such as "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0054] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0055] The present invention will be described in detail below with reference to the accompanying drawings.

[0056] As Figures 1-7 shown, a wind valve control device includes a hollow valve body 1, a windshield assembly 2 rotatably installed on the valve body 1, and a cylinder driving assembly 3. The wind valve control device further includes a cylinder positioning assembly 4 (see Figure 1 andFigure 7 ), and a limit seat 11 fixed inside the valve body 1 (see Figure 7 );

[0057] As Figure 6 shown, the windshield assembly 2 includes a rotating shaft 21, a first windshield 22, a second windshield 23, and multiple tension springs 24 arranged at intervals:

[0058] As Figure 2 shown, the rotating shaft 21 is rotatably installed on the valve body 1. One end of the rotating shaft 21 passes through the valve body 1 and is connected to the cylinder drive assembly 3. The rotating shaft 21 can rotate under the drive of the cylinder drive assembly 3;

[0059] As Figure 5 and 6 shown, the first windshield 22 is fixed on the rotating shaft 21 and can rotate synchronously with the rotating shaft 21. One end of the first windshield 22 adjacent to the rotating shaft 21 is the first connection end 221; the second windshield 23 has a second connection end 231 corresponding to the first connection end 221; both ends of the tension spring 24 are respectively arranged at the first connection end 221 and the second connection end 231. The tension spring 24 is used to make the first connection end 221 and the second connection end 231 abut against each other, so that the first windshield 22 and the second windshield 23 form a complete windshield structure 20;

[0060] As Figure 7 shown, the second windshield 23 is provided with a limit portion 232 and a positioning hole 2331.

[0061] The windshield assembly 2 has a closed state, a semi-open state, and a fully open state, and the cylinder drive assembly 3 has a first state and a second state;

[0062] As Figure 1 、 2 and 3 shown, when the windshield assembly 2 is in the closed state, the cylinder drive assembly 3 is in the first state, the limit portion 232 is embedded in the limit seat 11, the first windshield 22 and the second windshield 23 form a complete windshield structure 20, and the windshield structure 20 seals the valve body 1;

[0063] As Figure 4 、 5 and 6 shown, when the windshield assembly 2 is in the semi-open state, the cylinder drive assembly 3 is in the second state, the limit portion 232 is embedded in the limit seat 11 and the cylinder positioning assembly 4 extends into the positioning hole 2331. The position of the second windshield 23 is the same as the position of the second windshield 23 when the windshield assembly 2 is in the closed state. The first windshield 22 rotates a set angle with the rotating shaft 21, the tension spring 24 is stretched and becomes longer, the first connection end 221 and the second connection end 231 are separated from each other, and the windshield assembly 2 semi-opens the valve body 1;

[0064] AsFigure 4 and 7 As shown in 7 , when the windshield assembly 2 is in the fully open state, the cylinder drive assembly 3 is in the second state, the cylinder positioning assembly 4 disengages from the positioning hole 2331, the first windshield 22 and the second windshield 23 form a complete windshield structure 20, and the windshield structure 20 rotates by a set angle along the rotating shaft 21, and the windshield assembly 2 fully opens the valve body 1.

[0065] In the present application, the first windshield 22 and the second windshield 23 can form a complete windshield structure 20 through the tension spring 24. Driven by the rotating shaft 21 fixed to the first windshield 22, the windshield assembly 2 can have the same closed state and fully open state as the traditional structure; through the cooperation of the cylinder positioning assembly 4 and the positioning hole 2331 of the second windshield 23, the second windshield 23 can be limited to prevent the second windshield 23 from moving along the axial direction of the valve body 1. Through the cooperation of the limiting portion 232 of the second windshield 23 and the limiting seat 11, the second windshield 23 can be limited to move along the radial direction of the valve body 1, so that the windshield assembly 2 of the present application has a semi-open state, that is, the air valve control device of the present application has three states: a closed state, a semi-open state, and a fully open state. Compared with the two states of the traditional structure, more detailed control can be achieved.

[0066] As Figure 6 shown, in this embodiment, the end face of the first connection end 221 has a first installation groove 2211, and the end face of the second connection end 231 has a second installation groove 2311. One end of the tension spring 24 is installed in the first installation groove 2211, and the other end is installed in the second installation groove 2311;

[0067] Among the end faces of the first connection end 221 and the second connection end 231, one has a slot 2212, and the other has a plug post 2312. When the first windshield 22 and the second windshield 23 form a complete windshield structure 20, the end faces of the first connection end 221 and the second connection end 231 are abutted against each other, and the plug post 2312 is inserted into the slot 2212.

[0068] The design of the first installation groove 2211 and the second installation groove 2311 can form a space for accommodating the tension spring 24, so that in the initial state (the first connection end 221 and the second connection end 231 are abutted against each other, and the first windshield 22 and the second windshield 23 form a complete windshield structure 20), the tension spring 24 is completely hidden in the two installation grooves.

[0069] In actual use, there are hanging rods in each installation groove, and the end of the tension spring 24 is hooked on the corresponding hanging rod. In actual use, the plug post 2312 has a conical portion. Further, in order to limit the position of the tension spring 24 and prevent the tension spring 24 from moving along the length direction of the hanging rod, the hanging rod has an annular groove, and the end of the tension spring 24 is hooked on the annular groove.

[0070] As Figure 7 shown, in this embodiment, the limiting seat 11 has an anti-pulling-off groove 111. When the windshield assembly 2 is in the closed state and the semi-open state, the limiting portion 232 is embedded in the anti-pulling-off groove 111.

[0071] The limiting portion 232 is embedded in the anti-pulling-off groove 111 so that when the windshield assembly 2 is in the semi-open state (the tension spring 24 is deformed and elongated), it can overcome the pulling force of the tension spring 24 and prevent the second windshield 23 from moving in the radial direction of the valve body 1. After the cylinder positioning assembly 4 disengages from the positioning hole 2331, the matching form of the limiting portion 232 and the anti-pulling-off groove 111 does not block the rotation of the second windshield 23, that is, the semi-open state and the fully open state of the windshield assembly 2 can be controlled by the cylinder positioning assembly 4.

[0072] As Figure 6 shown, in this embodiment, the second connecting end 231 of the second windshield 23 is in contact and cooperation with the rotating shaft 21.

[0073] This cooperation form can ensure the force on the second windshield 23, making the windshield assembly 2 reliable and stable in force during the switching of each state.

[0074] As Figure 3 and 7 shown, in this embodiment, the part of the second windshield 23 away from the rotating shaft 21 has a positioning seat 233, and the positioning hole 2331 is arranged on the positioning seat 233. In actual use, multiple positioning seats 233 can be provided and arranged at intervals.

[0075] As Figure 1 and 3 shown, the cylinder positioning assembly 4 includes:

[0076] A positioning cylinder 41, arranged on the outer side of the valve body 1;

[0077] A positioning rod 42, passing through the side wall of the valve body 1 and used to insert into the positioning hole 2331 of the positioning seat 233.

[0078] In this embodiment, the end of the positioning rod 42 is conical. The conical design facilitates self-positioning and enables the positioning rod 42 to be reliably inserted into the positioning hole 2331.

[0079] As Figure 1 and 7 shown, in this embodiment, the air valve control device further includes a first limiting strip 12 and a second limiting strip 13 fixed to the inner side of the valve body 1. When the windshield assembly 2 is in the closed state, the periphery of the first windshield 22 is in sealed contact and cooperation with the first limiting strip 12, and the periphery of the second windshield 23 is in sealed contact and cooperation with the second limiting strip 13.

[0080] In the traditional structure, the sealing performance is poor. In the present application, when the windshield assembly 2 is in the closed state, the periphery of the first windshield 22 is in sealing contact and cooperation with the first limiting strip 12, and the periphery of the second windshield 23 is in sealing contact and cooperation with the second limiting strip 13. The present application has good sealing performance.

[0081] In actual operation, the limiting seat 11 and the second limiting strip 13 can be the same component.

[0082] As Figure 1 、 2 As shown in and 4, in this embodiment, a crank 211 is fixed to one end of the rotating shaft 21 passing through the valve body 1. The cylinder driving assembly 3 includes:

[0083] A mounting seat 31, which is fixed on the outer side wall of the valve body 1. The mounting seat 31 has an arc-shaped groove 311, and the arc-shaped groove 311 is arranged around the axis of the rotating shaft 21;

[0084] A driving cylinder 32, which is mounted on the mounting seat 31. The piston rod 321 of the driving cylinder 32 is perpendicular to the axis of the rotating shaft 21;

[0085] A rotating member 33, the first end of the rotating member 33 is rotatably mounted on the mounting seat 31. The axis of the rotating shaft 21 of the rotating member 33 coincides with the axis of the rotating shaft 21. One end of the crank 211 far from the rotating shaft 21 is connected to the rotating member 33 through a fastener 34 passing through the arc-shaped groove 311;

[0086] A connecting member 35, which is fixed on the piston rod 321 of the driving cylinder 32;

[0087] A linkage member 36, one end of the linkage member 36 is rotatably mounted on the second end of the rotating member 33, and the other end of the linkage member 36 is rotatably mounted on the connecting member 35.

[0088] In the traditional structure, the driving cylinder 32 is directly connected to the crank 211 through the linkage member 36. The connection line between the hinge point of the driving cylinder 32 and the linkage member 36 and the hinge point of the linkage member 36 and the crank 211 is likely to intersect with the axis of the rotating shaft 21 (forming a dead point and a transmission angle of zero), and the device may be stuck and unable to move.

[0089] The cylinder driving assembly 3 of the present application can make the transmission angle always greater than zero and have no dead point by setting the arc-shaped groove 311 and the connecting member 35, and can ensure continuous movement.

[0090] As Figure 1 shown, in this embodiment, the linkage member 36 is arc-shaped.

[0091] As Figure 1 shown, in this embodiment, the mounting seat 31 is U-shaped, and the crank 211 is located in the space formed by the mounting seat 31.

[0092] In this embodiment, the axis of the rotating shaft 21 is perpendicular to and intersects with the axis of the valve body 1.

[0093] As Figure 5 、 6 As shown in FIGS. 6 and 7, in this embodiment, the valve body 1 is circular, the first wind deflector 22 and the second wind deflector 23 are both semi-circular. The first wind deflector 22 and the second wind deflector 23 both include a straight side wall and a circular side wall. The straight side wall of the first wind deflector 22 is the first connection end 221, and the straight side wall of the second wind deflector 23 is the second connection end 231. When the straight side walls of the two wind deflectors are abutted against each other under the action of the tension spring 24 to form the wind deflector structure 20, the two semi-circular wind deflectors form a circular wind deflector.

[0094] As Figure 7 As shown in FIG. 6, the limit seat 11 and the positioning seat 233 are respectively arranged on the upper and lower sides of the second wind deflector 23.

[0095] As Figure 1 、 5 As shown in FIGS. 6 and 7, the upper end surface of the first wind deflector 22 is used for sealing contact and cooperation with the first limit strip 12, and the lower end surface of the second wind deflector 23 is used for sealing contact and cooperation with the second limit strip 13.

[0096] The above are only the preferred embodiments of the present invention, and thus do not limit the patent protection scope of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention, directly or indirectly applied in other related technical fields, shall be equally included in the protection scope of the present invention.

Claims

1. A damper control device, comprising a hollow valve body, a damper assembly rotatably mounted on the valve body, and a cylinder drive assembly, characterized in that: The air valve control device also includes a cylinder positioning assembly and a limit seat fixed inside the valve body; The windshield assembly includes a rotating shaft, a first windshield, a second windshield, and a plurality of tension springs arranged at intervals: The rotating shaft is rotatably mounted on the valve body, one end of the rotating shaft passes through the valve body and is connected to the cylinder drive assembly, and the rotating shaft is driven by the cylinder drive assembly to rotate; The first windshield is fixed on the rotating shaft and can rotate synchronously with the rotating shaft. One end of the first windshield adjacent to the rotating shaft is a first connecting end. The second windshield has a second connecting end corresponding to the first connecting end. The two ends of the tension spring are respectively arranged at the first connecting end and the second connecting end. The tension spring is used to make the first connecting end and the second connecting end abut against each other, so that the first windshield and the second windshield form a complete windshield structure. The second windshield plate has a limiting portion and a positioning hole, the windshield assembly has a closed state, a semi-open state and a fully open state, and the cylinder drive assembly has a first state and a second state; When the windshield assembly is in the closed state, the cylinder drive assembly is in the first state, the limiting portion is embedded in the limiting seat, the first windshield and the second windshield form a complete windshield structure, and the windshield structure seals the valve body; When the windshield assembly is in a semi-open state, the cylinder drive assembly is in a second state, the limit portion is embedded in the limit seat and the cylinder positioning assembly extends into the positioning hole, the position of the second windshield is the same as the position of the second windshield when the windshield assembly is in a closed state, the first windshield rotates with the rotating shaft to a set angle, the tension spring is stretched and becomes longer, the first connecting end and the second connecting end are separated from each other, and the windshield assembly semi-opens the valve body; When the windshield assembly is in a fully open state, the cylinder drive assembly is in a second state, the cylinder positioning assembly is disengaged from the positioning hole, the first windshield and the second windshield form a complete windshield structure, the windshield structure rotates with the rotating shaft to a set angle, and the windshield assembly fully opens the valve body.

2. The air valve control device according to claim 1, characterized in that: The end surface of the first connecting end has a first mounting groove, the end surface of the second connecting end has a second mounting groove, one end of the tension spring is installed in the first mounting groove, and the other end is installed in the second mounting groove; One of the end faces of the first connection end and the end faces of the second connection end has a slot, and the other has a plug column. When the first wind shield and the second wind shield form a complete wind shield structure, the end face of the first connection end and the end face of the second connection end abut against each other, and the plug column is inserted into the slot.

3. The air valve control device according to claim 2, characterized in that: The limiting seat is provided with an anti-pull-out groove, and when the windshield assembly is in a closed state and a semi-open state, the limiting portion is embedded in the anti-pull-out groove.

4. The air valve control device according to claim 1, characterized in that: The second connecting end of the second wind shield plate is in contact with and fits with the rotating shaft.

5. The air valve control device according to claim 1, characterized in that: The portion of the second windshield plate away from the rotating shaft has a positioning seat, and the positioning hole is arranged on the positioning seat; The cylinder positioning assembly comprises: A positioning cylinder is arranged on the outside of the valve body; A positioning rod is penetrated through the side wall of the valve body and is used for being inserted into the positioning hole of the positioning seat.

6. The air valve control device according to claim 5, characterized in that: The end of the positioning rod is tapered.

7. The air valve control device according to claim 5, characterized in that: The air valve control device also includes a first limit strip and a second limit strip fixed on the inner side of the valve body. When the wind shield assembly is in a closed state, the periphery of the first wind shield is in sealing contact with the first limit strip, and the periphery of the second wind shield is in sealing contact with the second limit strip.

8. The air valve control device according to claim 1, characterized in that: A crank is fixed to one end of the rotating shaft passing through the valve body, and the cylinder drive assembly comprises: A mounting seat, fixed on the outer side wall of the valve body, the mounting seat having an arc-shaped groove, and the arc-shaped groove is arranged around the axis of the rotating shaft; A driving cylinder is mounted on the mounting seat, and a piston rod of the driving cylinder is perpendicular to the axis of the rotating shaft; A rotating member, a first end of which is rotatably mounted on the mounting seat, a rotation axis of the rotating member coincides with the axis of the rotating shaft, and an end of the crank away from the rotating shaft is connected to the rotating member via a fastener passing through the arc groove; A connecting piece, fixed on the piston rod of the driving cylinder; A linkage member, one end of which is rotatably mounted on the second end of the rotating member, and the other end of which is rotatably mounted on the connecting member.

9. The air valve control device according to claim 8, characterized in that: The mounting seat is U-shaped, and the crank is located in a space formed by the mounting seat.

10. The air valve control device according to claim 1, characterized in that: The axis of the rotating shaft is perpendicular to and intersects with the axis of the valve body.

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