Dustproof pipeline convenient to ventilate

Abstract

The utility model discloses a dustproof pipeline facilitating ventilation, and belongs to the technical field of dustproof pipelines. Comprising a main air pipe and a Y-shaped pipe, the Y-shaped pipe is installed on the outer wall of the main air pipe, a supporting seat is installed at the top end of the Y-shaped pipe, flow dividing pipes are symmetrically installed on the outer wall of the Y-shaped pipe, air outlet covers are installed on the outer walls of the flow dividing pipes, and an axial flow fan is installed in the main air pipe; and a servo motor is mounted on the outer wall of each Y-shaped pipe on one side. According to the dust-proof pipeline, convenient and fast diversion ventilation of the dust-proof pipeline is achieved, convenient and fast filtering of dust and impurities by the dust-proof pipeline is achieved, the convenience of replacing a filter screen by opening a cover is improved, two-group type mutual switching ventilation of the dust-proof pipeline is facilitated, and the other group is convenient to maintain without shutdown after one group is damaged; in addition, the dustproof pipeline can conveniently and rapidly swing in a reciprocating mode to guide air out, and the gas diffusion efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of dustproof duct technology, specifically a dustproof duct that facilitates ventilation. Background Technology

[0002] Ventilation ducts are metal or non-metal pipes used in ventilation and air conditioning projects in industrial and civil buildings. They are a type of municipal infrastructure equipment designed to circulate air and reduce the concentration of harmful gases. The sheet metal, profiles, and other major finished materials used in the fabrication and installation of ventilation ducts should comply with the design and relevant current national standards and be accompanied by a certificate of conformity from the manufacturer. Materials should be inspected upon arrival at the site according to current national standards.

[0003] As disclosed in the authorization announcement number CN222393017U, a building ventilation and dust control duct that facilitates ventilation belongs to the technical field of ventilation and dust control ducts. This building ventilation and dust control duct that facilitates ventilation includes a duct; a first dust control pipe, which is fixedly connected to the side end of the duct; a second dust control pipe, which is bolted and threadedly connected to the side end of the first dust control pipe, and a connecting pipe is fixedly connected to the side end of the second dust control pipe; and a frame, which is fixedly connected to the side end of the connecting pipe, and a fan blade is fixedly connected to the side end of the frame by installing an adjustable baffle and a valve.

[0004] Although it enables precise control of ventilation volume and airflow direction according to actual needs, avoiding unnecessary airflow loss and thus saving energy, the improved sealing performance reduces interference with the indoor and outdoor environment, reduces energy loss caused by airflow leakage, and further improves the system's energy utilization efficiency.

[0005] However, this does not solve the problems that existing dustproof ducts are generally not conducive to convenient diversion ventilation, are not convenient for filtering dust and impurities, affect the convenience of opening the cover to replace the filter, are not convenient for switching ventilation between two sets of dustproof ducts, are not convenient for maintaining the other set without stopping the machine after one set is damaged, and are not convenient for the dustproof duct to swing back and forth to guide the air out, thus affecting the efficiency of gas diffusion. Utility Model Content

[0006] The purpose of this utility model is to provide a dustproof duct that facilitates ventilation, thereby solving the problems mentioned in the background art, such as the inconvenience of convenient diversion ventilation, the inconvenience of convenient filtration of dust and impurities, the inconvenience of opening the cover to replace the filter, the inconvenience of switching ventilation between two sets of dustproof ducts, the inconvenience of maintaining the other set without stopping the machine after one set is damaged, and the inconvenience of convenient reciprocating swing of the dustproof duct to guide the air out, which affects the efficiency of gas diffusion.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0008] A dustproof duct for easy ventilation includes a main duct and a Y-shaped duct. The Y-shaped duct is installed on the outer wall of the main duct, and a support base is installed at the top of the Y-shaped duct. Diverter ducts are symmetrically installed on the outer wall of the Y-shaped duct, and each diverter duct has an exhaust hood installed on its outer wall. An axial flow fan is installed inside the main duct. A servo motor is installed on the outer wall of each Y-shaped duct on one side. A first worm gear is installed at the output end of each servo motor. Fixed seats are symmetrically installed at the top of each Y-shaped duct above the servo motor. A rotating shaft is movably fitted inside each fixed seat, and the rotating shaft extends to the outside of the fixed seat.

[0009] Optionally, a first worm wheel is installed at the end of the rotating shaft near the first worm, and the first worm wheel meshes with the first worm. A connecting seat is fitted on the surface of the rotating shaft between the two sides of the fixed seat.

[0010] Optionally, a cover plate is installed on the outer wall of each connecting seat, and multiple sets of filter screens with equal spacing are installed inside each of the Y-shaped tubes below.

[0011] Optionally, a cylinder is movably mounted on the top of the support base, and a rotating pin is mounted on the outer wall of the cylinder, and the cylinder is movably connected to the support base through the rotating pin.

[0012] Optionally, a push rod is installed at the output end of the cylinder, a rocker arm is installed at one end of the push rod, a connecting pin is installed at the end of the push rod near the rocker arm, and the push rod is movably connected to the rocker arm through the connecting pin.

[0013] Optionally, a drive shaft is mounted at the bottom end of the rocker arm, and the drive shaft extends into the interior of the Y-shaped tube, with a valve plate fitted onto the surface of the drive shaft.

[0014] Optionally, a duct seat is installed inside the air outlet shroud, a stepper motor is installed on the outer wall of the duct seat, a second worm gear is installed at the output end of the stepper motor, a fan is installed at one end of the second worm gear, and a support shaft is installed on the outer wall of the duct seat on one side of the second worm gear, and the support shaft extends into the interior of the duct seat.

[0015] Optionally, a second worm gear is movably fitted onto the surface of the support shaft, and the second worm gear meshes with a second worm. A bent shaft is movably installed on the outer wall of the duct seat on the side away from the support shaft, and the bent shaft extends into the interior of the duct seat and is connected to the second worm gear.

[0016] Optionally, a transmission arm is provided on the outer side of the second worm wheel below the second worm, and the transmission arm is connected to the bent shaft. A linkage arm is movably installed at the bottom end of the transmission arm, and three sets of guide plates with equal spacing are installed inside the air outlet shroud on one side of the linkage arm.

[0017] Optionally, the guide plate is equipped with a hinge pin on the side near the linkage arm, and the guide plate is movably connected to the linkage arm via the hinge pin, and the linkage arm is movably connected to the transmission arm via the hinge pin. A transmission shaft is installed on the outer wall of both sides of the guide plate, and the transmission shaft is movably connected to the air outlet shroud on the adjacent side.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the dustproof duct not only realizes convenient diversion ventilation of the dustproof duct, facilitates convenient filtration of dust and impurities, improves the convenience of opening the cover to replace the filter screen, facilitates the switching between the two sets of ventilation of the dustproof duct, facilitates the maintenance of the other set without stopping the machine after one set is damaged, but also facilitates the convenient reciprocating swing of the dustproof duct to guide the air out, and improves the efficiency of gas diffusion.

[0019] The dustproof duct is manually placed in the location requiring ventilation. External air is drawn into the main duct by an axial flow fan, then transported to the Y-shaped duct. After being filtered by the filter screen, the air is distributed to the two side branch ducts. The filtered air is then blown out through the air outlets on both sides. When the filter screen needs to be replaced, the servo motor drives the first worm gear to rotate, which in turn drives the first worm wheel to rotate. The worm wheel then drives the rotating shaft to rotate under the movable support of the fixed seat. The rotating shaft drives the connecting seat to rotate, which in turn drives the cover plate to rotate, opening the cover plate. This allows for easy manual removal and replacement of the filter screen, enabling convenient diversion ventilation of the dustproof duct, facilitating the filtration of dust and impurities, and improving the convenience of opening the cover and replacing the filter screen.

[0020] When a shunt pipe on one side malfunctions and requires maintenance, the cylinder drives the push rod to move. The push rod, through the connecting pin, drives the rocker arm to rotate. The rocker arm drives the drive shaft to rotate, and the drive shaft drives the valve plate to rotate. This allows the valve plate to close the shunt pipe on one side, enabling the two sets of dustproof ducts to switch between ventilation. This facilitates maintenance of the other set without shutting down the system if one set is damaged, avoiding any impact on the outside environment caused by equipment downtime maintenance.

[0021] A stepper motor drives a second worm gear to rotate, which in turn drives a fan. With the help of a fan housing, this allows the fan to directly blow out air. The second worm gear drives a second worm wheel to rotate, and a support shaft provides movable support for the second worm wheel. The second worm wheel drives a bent shaft to rotate, which in turn drives a transmission arm to reciprocate. The transmission arm, via a hinge pin, drives a linkage arm to reciprocate, which in turn drives a guide plate to rotate reciprocally around the transmission shaft. This reciprocating oscillation guides the airflow, enabling convenient and rapid air dispersion in the dustproof duct and improving gas diffusion efficiency. Attached Figure Description

[0022] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the cylinder of this utility model;

[0025] Figure 3 This is a three-dimensional structural diagram of the valve plate of this utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of the axial flow fan of this utility model;

[0027] Figure 5 This is a three-dimensional structural diagram of the cover plate of this utility model;

[0028] Figure 6 This is a three-dimensional structural diagram of the guide plate of this utility model;

[0029] Figure 7 This is a three-dimensional structural diagram of the transmission arm of this utility model;

[0030] Figure 8 This is a three-dimensional structural diagram of the second worm gear of this utility model;

[0031] Figure 9 This is a three-dimensional structural diagram of the second worm gear of this utility model.

[0032] Figure label:

[0033] 1. Main air duct; 2. Y-shaped duct; 3. Support base; 4. Diverter duct; 5. Air outlet hood; 6. Axial flow fan; 7. Servo motor; 8. First worm gear; 9. First worm wheel; 10. Rotating shaft; 11. Connecting seat; 12. Fixed seat; 13. Cover plate; 14. Filter screen; 15. Rotating pin; 16. Cylinder; 17. Push rod; 18. Connecting pin; 19. Rocker arm; 20. Drive shaft; 21. Valve plate; 22. Air duct base; 23. Stepper motor; 24. Second worm gear; 25. Fan; 26. Second worm wheel; 27. Support shaft; 28. Transmission arm; 29. ​​Hinge pin; 30. Linkage arm; 31. Transmission shaft; 32. Guide plate; 33. Bent shaft.

[0034] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0035] The present invention provides a dustproof duct that facilitates ventilation, in conjunction with the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies. Furthermore, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0036] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0037] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0038] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0039] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0040] Please see Figure 1-9 This utility model provides an embodiment of a dustproof duct for easy ventilation, comprising a main duct 1 and a Y-shaped duct 2. The Y-shaped duct 2 is installed on the outer wall of the main duct 1, and a support base 3 is installed at the top of the Y-shaped duct 2. Diversion pipes 4 are symmetrically installed on the outer wall of the Y-shaped duct 2, and each diversion pipe 4 has an exhaust hood 5 installed on its outer wall. An axial flow fan 6 is installed inside the main duct 1. A servo motor 7 is installed on the outer wall of each Y-shaped duct 2 on one side, and a first worm gear 8 is installed at the output end of each servo motor 7. Above the servo motor 7... Each of the Y-shaped tubes 2 has a fixed seat 12 symmetrically installed at its top end. The fixed seat 12 has a rotating shaft 10 movably fitted inside it, and the rotating shaft 10 extends to the outside of the fixed seat 12. The end of the rotating shaft 10 near the first worm 8 is equipped with a first worm wheel 9, and the first worm wheel 9 meshes with the first worm 8. The rotating shaft 10 between the two sides of the fixed seat 12 is fitted with a connecting seat 11. The outer wall of the connecting seat 11 is equipped with a cover plate 13. The Y-shaped tube 2 below is equipped with multiple sets of filter screens 14 at equal intervals.

[0041] The dustproof duct is manually placed in the location requiring ventilation. The axial flow fan 6 is turned on, and the external air is drawn into the main duct 1 by the axial flow fan 6. The air is then transported to the Y-shaped duct 2 and filtered by the filter screen 14 before being distributed to the two side branch ducts 4. The filtered air is then blown out through the air outlet hoods 5 on both sides. When the filter screen 14 needs to be replaced, the servo motor 7 is turned on. Supported by the Y-shaped duct 2, the servo motor 7 drives the first worm gear 8 to rotate. With the first worm gear 8 meshing with the first worm wheel 9, the first worm gear 8 drives the first worm wheel 9 to rotate. The first worm wheel 9 drives the rotating shaft 10 to rotate under the movable support of the fixed seat 12. The rotating shaft 10 drives the connecting seat 11 to rotate, and the connecting seat 11 drives the cover plate 13 to rotate. The cover plate 13 will then open, allowing the filter screen 14 to be easily disassembled and replaced manually. This achieves convenient diversion ventilation of the dustproof duct, facilitates the filtration of dust and impurities, and improves the convenience of opening the cover and replacing the filter screen.

[0042] A cylinder 16 is movably mounted on the top of the support base 3. A rotating pin 15 is mounted on the outer wall of the cylinder 16, and the cylinder 16 is movably connected to the support base 3 through the rotating pin 15. A push rod 17 is mounted on the output end of the cylinder 16. A rocker arm 19 is mounted on one end of the push rod 17. A connecting pin 18 is mounted on the end of the push rod 17 near the rocker arm 19, and the push rod 17 is movably connected to the rocker arm 19 through the connecting pin 18. A drive shaft 20 is mounted on the bottom end of the rocker arm 19, and the drive shaft 20 extends into the interior of the Y-shaped tube 2. A valve plate 21 is fitted on the surface of the drive shaft 20.

[0043] When the shunt pipe 4 on one side malfunctions and needs maintenance, the cylinder 16 is opened. Supported by the support seat 3 and the movable support of the rotating pin 15, the cylinder 16 drives the push rod 17 to move. The push rod 17 drives the rocker arm 19 to rotate through the connecting pin 18. The rocker arm 19 drives the drive shaft 20 to rotate. The drive shaft 20 drives the valve plate 21 to rotate, which facilitates the valve plate 21 to close the shunt pipe 4 on one side. This realizes the two sets of dustproof pipes that can be switched between for ventilation. It is convenient to maintain the other set without stopping the machine after one set is damaged, and avoids the impact of the machine stopping the maintenance equipment on the outside.

[0044] An air outlet shroud 5 houses an air duct base 22. A stepper motor 23 is mounted on the outer wall of the air duct base 22. A second worm gear 24 is mounted on the output end of the stepper motor 23. A fan 25 is mounted on one end of the second worm gear 24. A support shaft 27 is mounted on the outer wall of the air duct base 22 on one side of the second worm gear 24, extending into the interior of the air duct base 22. A second worm wheel 26 is movably fitted onto the surface of the support shaft 27, meshing with the second worm gear 24. A bent shaft 33 is movably mounted on the outer wall of the air duct base 22 on the side away from the support shaft 27, extending into the interior of the air duct base 22, and meshing with the second worm wheel 26. Connected to the second worm gear 24, a transmission arm 28 is provided on the outer side of the second worm wheel 26 below the second worm gear 24, and the transmission arm 28 is connected to the bent shaft 33. A linkage arm 30 is movably installed at the bottom end of the transmission arm 28. Three sets of guide plates 32 with equal spacing are installed inside the air outlet shroud 5 on one side of the linkage arm 30. A hinge pin 29 is installed on the side of the guide plate 32 near the linkage arm 30, and the guide plate 32 is movably connected to the linkage arm 30 through the hinge pin 29. The linkage arm 30 is movably connected to the transmission arm 28 through the hinge pin 29. A transmission shaft 31 is installed on the outer wall of both sides of the guide plate 32, and the transmission shaft 31 is movably connected to the air outlet shroud 5 on the adjacent side.

[0045] When the stepper motor 23 is turned on, supported by the fan base 22, the stepper motor 23 drives the second worm gear 24 to rotate, which in turn drives the fan 25 to rotate. With the cooperation of the fan base 22, the fan 25 can directly blow out the gas. Under the meshing of the second worm gear 24 and the second worm wheel 26, the second worm gear 24 drives the second worm wheel 26 to rotate. The support shaft 27 provides movable support for the second worm wheel 26. The second worm wheel 26 drives the bent shaft 33 to rotate, which in turn drives the transmission arm 28 to move back and forth. The transmission arm 28 drives the linkage arm 30 to move back and forth through the hinge pin 29. The linkage arm 30 drives the guide plate 32 to rotate back and forth around the transmission shaft 31, which facilitates the back and forth swing to guide the air out. This realizes the convenient back and forth swing to guide the air out of the dustproof duct, which facilitates the rapid dispersion of gas and improves the efficiency of gas diffusion.

[0046] The working principle of the technical solution provided by this utility model is as follows: First, the dustproof duct is placed manually in the location requiring ventilation. External air is drawn into the main duct 1 by the axial flow fan 6, and then transported to the Y-shaped duct 2. After being filtered by the filter screen 14, the air is delivered to the two side branch pipes 4. The filtered air is then blown out through the air outlet hoods 5 on both sides. When the filter screen 14 needs to be replaced, the servo motor 7 drives the first worm gear 8 to rotate, the first worm gear 8 drives the first worm wheel 9 to rotate, and the first worm wheel 9 drives the rotating shaft 10 to rotate under the movable support of the fixed seat 12. The rotating shaft 10 drives the connecting seat 11 to rotate, and the connecting seat 11 drives the cover plate 13 to rotate, opening the cover plate 13 for easy manual removal and replacement of the filter screen 14. When one side of the branch pipe 4 malfunctions and needs repair, the cylinder 16 drives... Push rod 17 moves, and push rod 17 drives rocker arm 19 to rotate via connecting pin 18. Rocker arm 19 drives drive shaft 20 to rotate, and drive shaft 20 drives valve plate 21 to rotate, so that valve plate 21 can close the diversion pipe 4 on one side. Stepper motor 23 drives second worm gear 24 to rotate, and second worm gear 24 drives fan 25 to rotate. With the cooperation of air duct seat 22, it is convenient for fan 25 to blow air directly out. Second worm gear 24 drives second worm wheel 26 to rotate. Support shaft 27 provides movable support for second worm wheel 26. Second worm wheel 26 drives bent shaft 33 to rotate, and bent shaft 33 drives transmission arm 28 to move back and forth. Transmission arm 28 drives linkage arm 30 to move back and forth via hinge pin 29. Linkage arm 30 drives guide plate 32 to rotate back and forth around transmission shaft 31, so as to facilitate the back and forth swing to guide the air out, thereby completing the use of dustproof duct.

[0047] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0048] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A dustproof duct that facilitates ventilation, characterized in that: The system includes a main duct and Y-shaped ducts. Y-shaped ducts are installed on the outer wall of the main duct, and a support base is installed at the top of the Y-shaped duct. Diverter ducts are symmetrically installed on the outer wall of the Y-shaped ducts, and each diverter duct has an exhaust hood installed on its outer wall. An axial flow fan is installed inside the main duct. A servo motor is installed on the outer wall of each Y-shaped duct on one side. A first worm gear is installed at the output end of each servo motor. Fixed seats are symmetrically installed at the top of each Y-shaped duct above the servo motor. A rotating shaft is movably fitted inside each fixed seat, and the rotating shaft extends to the outside of the fixed seat.

2. The dustproof duct for easy ventilation according to claim 1, characterized in that: Each of the rotating shafts is equipped with a first worm wheel at the end near the first worm, and the first worm wheel meshes with the first worm. Connecting seats are fitted onto the surfaces of the rotating shafts between the two sides of the fixed seat.

3. A dustproof duct for easy ventilation according to claim 2, characterized in that: The outer wall of each connector is equipped with a cover plate, and the interior of each Y-shaped tube below is equipped with multiple sets of equally spaced filter screens.

4. A dustproof duct for easy ventilation according to claim 3, characterized in that: A cylinder is movably mounted on the top of the support base, and a rotating pin is mounted on the outer wall of the cylinder, and the cylinder is movably connected to the support base through the rotating pin.

5. A dustproof duct for easy ventilation according to claim 4, characterized in that: A push rod is installed at the output end of the cylinder, a rocker arm is installed at one end of the push rod, a connecting pin is installed at the end of the push rod near the rocker arm, and the push rod is movably connected to the rocker arm through the connecting pin.

6. A dustproof duct for easy ventilation according to claim 5, characterized in that: The bottom end of the rocker arm is equipped with a drive shaft, which extends into the interior of the Y-shaped tube, and a valve plate is fitted onto the surface of the drive shaft.

7. A dustproof duct for easy ventilation according to claim 6, characterized in that: An air duct base is installed inside the air outlet shroud. A stepper motor is installed on the outer wall of the air duct base. A second worm gear is installed at the output end of the stepper motor. A fan is installed at one end of the second worm gear. A support shaft is installed on the outer wall of the air duct base on one side of the second worm gear, and the support shaft extends into the interior of the air duct base.

8. A dustproof duct for easy ventilation according to claim 7, characterized in that: The surface of the support shaft is movably fitted with a second worm gear, which meshes with a second worm. A bent shaft is movably installed on the outer wall of the duct seat on the side away from the support shaft, and the bent shaft extends into the interior of the duct seat and is connected to the second worm gear.

9. A dustproof duct for easy ventilation according to claim 8, characterized in that: A transmission arm is provided on the outer side of the second worm wheel below the second worm, and the transmission arm is connected to the bent shaft. A linkage arm is movably installed at the bottom end of the transmission arm, and three sets of guide plates with equal spacing are installed inside the air outlet shroud on one side of the linkage arm.

10. A dustproof duct for easy ventilation according to claim 9, characterized in that: The guide plate is equipped with a hinge pin on the side near the linkage arm, and the guide plate is movably connected to the linkage arm through the hinge pin. The linkage arm is movably connected to the transmission arm through the hinge pin. A transmission shaft is installed on the outer wall of both sides of the guide plate, and the transmission shaft is movably connected to the air outlet shroud on the adjacent side.

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