Air conditioning and purification device

Abstract

The present invention relates to the technical field of air purification and regulation, and discloses an air conditioning and purification device, which comprises a ventilation duct, wherein a plurality of air volume regulating fan-shaped plates are equidistantly arranged in an annular shape inside the ventilation duct, the plurality of air volume regulating fan-shaped plates form a circular baffle plate matching the inner diameter of the ventilation duct, a mounting cover is fixedly mounted on the surface of the ventilation duct, a fan-shaped plate synchronous regulating mechanism is mounted on the surface of the ventilation duct located inside the mounting cover, the plurality of air volume regulating fan-shaped plates are all transmission-connected with the fan-shaped plate synchronous regulating mechanism, a forward and reverse motor is mounted on one end of the top inside the mounting cover, and a transmission regulating component is mounted in the middle of one side inside the mounting cover; the air conditioning and purification device has a convenient air volume regulating structure and a reliable manual control regulating structure, and the mechanical structure of the air conditioning and purification device is simple in design, and the use and regulation are stable and reliable, and the performance thereof can meet the use requirements of air purification.

Description

Technical Field

[0001] The invention belongs to the technical field of air purification and regulation, and in particular relates to an air conditioning and purification device. Background Art

[0002] Air purification refers to the process of removing pollutants from indoor or outdoor air and improving air quality through certain technical means; common air purification methods include: filtration technology, adsorption technology, ionization technology, biotechnology and hybrid technology; air purification technology is widely used in homes, offices, hospitals, factories and other places to effectively remove PM2.5, formaldehyde, bacteria and other pollutants, improve indoor and outdoor air quality, and protect human health; it is important to choose the appropriate purification technology for different scenarios and needs.

[0003] Existing large-scale air purification and ventilation devices are in use, but their ventilation ducts cannot conveniently adjust the ventilation volume. At the same time, the ventilation adjustment is mostly controlled and adjusted by electric means. When the electric method fails or cannot be used, the ventilation duct cannot effectively adjust the ventilation volume or perform a closing operation, resulting in deficiencies in the use of the air purification and ventilation devices. Therefore, improvements are needed to address the above problems. Summary of the invention

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an air conditioning and purification device, comprising a ventilation duct, wherein a plurality of air volume regulating fan-shaped plates are provided at equal intervals in an annular shape inside the ventilation duct, the plurality of air volume regulating fan-shaped plates form a circular baffle matching the inner diameter of the ventilation duct, a mounting cover is fixedly installed on the surface of the ventilation duct, a fan-shaped plate synchronous adjustment mechanism is installed on the surface of the ventilation duct located inside the mounting cover, the plurality of air volume regulating fan-shaped plates are all transmission-connected with the fan-shaped plate synchronous adjustment mechanism, a forward and reverse motor is installed at one end of the top of the mounting cover, a transmission adjustment component is installed in the middle of one side of the mounting cover, the transmission adjustment component is transmission-connected between the fan-shaped plate synchronous adjustment mechanism and the output end of the forward and reverse motor, a manual adjustment component is installed in the middle of one side of the mounting cover, the manual adjustment component is transmission-connected with the transmission adjustment component, a middle round block is provided inside the ventilation duct and between the ends of the plurality of air volume regulating fan-shaped plates, L-shaped rods are fixedly installed at equal intervals in an annular shape at both ends of the middle round block, the L-shaped rods at both ends of the middle round block are symmetrically arranged, and the ends of the L-shaped rods away from the middle round block are fixedly connected with the inner wall of the ventilation duct.

[0005] Preferably, the fan-shaped plate synchronous adjustment mechanism includes a first rotating shaft, a second rotating shaft and several third rotating shafts, the first rotating shaft, the second rotating shaft and several third rotating shafts are rotatably connected to the ventilation duct at equal angles, and one end of the first rotating shaft, the second rotating shaft and several third rotating shafts are rotatably connected to the circumferential surface of the middle circle block, and several air volume adjusting fan-shaped plates are respectively fixedly connected to the surfaces of the first rotating shaft, the second rotating shaft and several third rotating shafts, so that the air volume adjusting fan-shaped plates can be effectively installed.

[0006] Preferably, the other end of the first rotating shaft is fixedly installed with the first slat, the other end of the second rotating shaft is fixedly installed with the second slat, and the other ends of the plurality of third rotating shafts are fixedly installed with the third slats, one side of the first slat and the second slat are fixedly connected with a first fixed block, one side of the plurality of third slats are fixedly installed with two second fixed blocks, a first ball socket is opened on the opposite side of the two first fixed blocks, a first ball head is rotatably installed inside the first ball socket, a second ball socket is opened on the opposite side of the two second fixed blocks on the third slat, a second ball head is rotatably installed inside the second ball socket, and connecting rods are fixedly connected between the first ball head and the second ball head opposite to it and between the two opposite second ball heads, so that all the air volume adjustment fan plates can be effectively adjusted synchronously.

[0007] Preferably, a square transmission shaft is fixedly mounted on the other end of the first rotating shaft, a first bevel gear is fixedly mounted on the output end of the forward and reverse motor, and the transmission adjustment component is transmission-connected between the square transmission shaft and the first bevel gear.

[0008] Preferably, the transmission adjustment component includes a U-shaped block, the upper part of the U-shaped block is rotatably connected to an inner square rotating tube matching the square transmission shaft, the square transmission shaft is movably inserted into the inner square rotating tube, the middle part and one end of the inner square rotating tube are respectively fixedly connected to the second bevel gear and the third bevel gear, the first bevel gear is meshingly connected to the second bevel gear, so that the air volume adjustment fan plate can be controlled and adjusted by electric means.

[0009] Preferably, an inverted T-shaped slide bar is fixedly installed on one side of the interior of the mounting cover, and a threaded shaft located above the inverted T-shaped slide bar is rotatably connected to one side of the interior of the mounting cover, the lower part of the U-shaped block is slidably sleeved on the surface of the inverted T-shaped slide bar, and an internal threaded tube is fixedly installed on the lower part of the U-shaped block, the internal threaded tube is threadedly connected to the surface of the threaded shaft, and a fourth bevel gear is fixedly connected to one side of the internal threaded tube.

[0010] Preferably, the manual adjustment component includes a rotating shaft rotatably connected to one side of the inside of the mounting cover, a first conical cone is fixedly installed on the bottom of the rotating shaft, the inclined surface of the first conical cone is provided with a first transmission tooth segment which is matched and meshed with the fourth bevel gear, a second conical cone is fixedly installed on the middle of the rotating shaft, the second conical cone is matched with the third bevel gear, the second transmission tooth segment is staggered with the first transmission tooth segment, and a worm gear is fixedly installed on the top of the rotating shaft, so that transmission and adjustment can be effectively carried out.

[0011] Preferably, a worm is rotatably connected to one side of the mounting cover, the worm extends to the interior of the mounting cover and is meshingly connected to the worm wheel, a rotating wheel is fixedly mounted on the end of the worm located outside the mounting cover, thereby enabling effective manual adjustment, an angle pointer is fixedly mounted on the surface of the worm located outside the mounting cover, and an angle measuring ruler aligned with the angle pointer is fixedly mounted on one side of the mounting cover, thereby enabling precise angle adjustment.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) During operation, the air conditioning purification device has a convenient air volume adjustment structure by providing a ventilation duct, an air volume adjustment fan plate, a mounting cover, a fan plate synchronous adjustment mechanism, a forward and reverse motor, a transmission adjustment component, a manual adjustment component, a middle round block and an L-shaped rod. The air volume adjustment structure is simple in design and convenient to use, avoiding control and adjustment failures, ensuring the stability of air purification and adjustment, thereby improving the performance of the air purification device. At the same time, the air conditioning purification device has a reliable manual control adjustment structure, which can perform stable and effective air volume adjustment when the electric mode cannot be used, thereby ensuring the reliability and stability of the air purification device. In addition, the mechanical structure of the air conditioning purification device is simple in design, and the use and adjustment are stable and reliable. The performance it has can meet the use requirements of air purification;

[0014] (2) By starting the forward and reverse rotation motor, the first bevel gear drives the second bevel gear to rotate, the rotation of the second bevel gear drives the inner square rotating tube to rotate, the rotation of the inner square rotating tube drives the square transmission shaft to rotate, the rotation of the square transmission shaft drives the first rotating shaft to rotate and control and adjust all the air volume adjustment fan plates;

[0015] When the square transmission shaft rotates, it will drive the first rotating shaft and the first slat to rotate. The rotation of the first slat will drive the third rotating shaft adjacent to it to rotate synchronously through the first fixed block, the first ball head, the connecting rod, the second ball head and the second fixed block. The rotation of the third rotating shaft will drive the remaining third rotating shafts to rotate synchronously through the second fixed block, the second ball head and the connecting rod. Similarly, the third rotating shaft will drive the second rotating shaft to rotate through the second fixed block, the second ball head, the connecting rod, the first ball head and the first fixed block. Finally, the first rotating shaft, the second rotating shaft and all the third rotating shafts rotate synchronously and in the same direction, so that all the air volume adjustment fan-shaped plates rotate to adjust the size of the air duct inside the ventilation duct and control the size of the air circulation.

[0016] (3) When the forward and reverse motor fails and cannot be used, the worm is rotated by the rotating wheel, and the rotation of the worm will drive the worm wheel to rotate, and the rotation of the worm wheel will drive the rotating shaft to rotate, and the rotation of the rotating shaft will drive the second conical truncated cone and the second transmission tooth segment and the first conical truncated cone and the first transmission tooth segment to rotate, and the rotation of the first transmission tooth segment will rotate the fourth bevel gear, and the rotation of the fourth bevel gear will drive the threaded shaft to rotate, and the rotation of the threaded shaft will cause the internal threaded tube on its surface to drive the U-shaped block to move, so that the U-shaped block can slide stably on the surface of the inverted T-shaped slide rod;

[0017] The movement of the U-shaped block will drive the inner square rotating tube, the second bevel gear and the third bevel gear to move, so that the inner square rotating tube moves on the surface of the square transmission shaft to separate the second bevel gear from the first bevel gear. When the first transmission gear segment separates from the fourth bevel gear, the U-shaped block stops moving, and the third bevel gear moves to the second conical frustum.

[0018] As the rotating shaft continues to rotate, the second transmission tooth segment will transmit the rotation of the third bevel gear, and the rotation of the third bevel gear will drive the inner square rotating tube and the square transmission shaft to rotate to control and adjust all the air volume adjustment fan plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0020] In the attached picture:

[0021] Figure 1 It is a side view structural schematic diagram of the air conditioning and purification device of the present invention;

[0022] Figure 2 For the present invention Figure 1 Schematic diagram of the local structure;

[0023] Figure 3 For the present invention Figure 1 A schematic cross-sectional structure diagram of ;

[0024] Figure 4 For the present invention Figure 3 The local structure of Figure 1 ;

[0025] Figure 5 For the present invention Figure 4 A partial side view structural schematic diagram of ;

[0026] Figure 6 For the present invention Figure 5 A schematic diagram of a partial cross-sectional structure;

[0027] Figure 7 For the present invention Figure 3 The local structure of Figure 2 ;

[0028] Figure 8 For the present invention Figure 6 Schematic diagram of the local structure;

[0029] In the figure: 1, ventilation duct; 2, air volume adjustment fan plate; 3, mounting cover; 4, fan plate synchronous adjustment mechanism; 5, forward and reverse motor; 6, transmission adjustment component; 7, manual adjustment component; 8, middle round block; 9, L-shaped rod; 10, first rotating shaft; 11, second rotating shaft; 12, third rotating shaft; 13, first slat; 14, second slat; 15, third slat; 16, first fixed block; 17, second fixed block; 1701, second ball head; 18, connecting rod; 19 , square transmission shaft; 20, first bevel gear; 21, U-shaped block; 22, inner square rotating tube; 23, second bevel gear; 24, third bevel gear; 25, inverted T-shaped slide bar; 26, internal threaded tube; 27, threaded shaft; 28, fourth bevel gear; 29, rotating shaft; 30, first conical frustum; 31, first transmission tooth segment; 32, second conical frustum; 33, second transmission tooth segment; 34, worm wheel; 35, worm; 36, rotating wheel; 37, angle pointer; 38, angle measuring ruler. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] Embodiment 1, by Figures 1 to 8The present invention comprises a ventilation duct 1, wherein a plurality of air volume regulating fan-shaped plates 2 are arranged at equal intervals in an annular shape inside the ventilation duct 1, wherein the plurality of air volume regulating fan-shaped plates 2 form a circular baffle plate matching the inner diameter of the ventilation duct 1, a mounting cover 3 is fixedly mounted on the surface of the ventilation duct 1, a fan-shaped plate synchronous regulating mechanism 4 is mounted on the surface of the ventilation duct 1 located inside the mounting cover 3, the plurality of air volume regulating fan-shaped plates 2 are all transmission-connected with the fan-shaped plate synchronous regulating mechanism 4, a forward and reverse motor 5 is mounted on one end of the top of the mounting cover 3, and a transmission regulating mechanism 4 is mounted in the middle of one side of the mounting cover 3. A node component 6, a transmission adjustment component 6 is transmission-connected between the fan-shaped plate synchronous adjustment mechanism 4 and the output end of the forward and reverse motor 5, a manual adjustment component 7 is installed in the middle of one side of the mounting cover 3, the manual adjustment component 7 is transmission-connected with the transmission adjustment component 6, a middle round block 8 is provided inside the ventilation duct 1 and between the ends of several air volume adjustment fan-shaped plates 2, both ends of the middle round block 8 are fixedly installed with L-shaped rods 9 in a circular shape at equal distances, the L-shaped rods 9 at both ends of the middle round block 8 are symmetrically arranged, and the ends of the L-shaped rods 9 away from the middle round block 8 are fixedly connected to the inner wall of the ventilation duct 1.

[0032] The air conditioning and purification device has a simple mechanical structure design, is stable and reliable in use and adjustment, and its performance can meet the use requirements of air purification.

[0033] Embodiment 2, on the basis of embodiment 1, the synchronous adjustment mechanism 4 of the fan-shaped plate includes a first rotating shaft 10, a second rotating shaft 11 and a plurality of third rotating shafts 12, the first rotating shaft 10, the second rotating shaft 11 and the plurality of third rotating shafts 12 are rotationally connected to the ventilation duct 1 at equal angles, and one end of the first rotating shaft 10, the second rotating shaft 11 and the plurality of third rotating shafts 12 are rotationally connected to the circumferential surface of the middle circular block 8, and a plurality of air volume adjustment fan-shaped plates 2 are respectively fixedly connected to the surfaces of the first rotating shaft 10, the second rotating shaft 11 and the plurality of third rotating shafts 12, so that the air volume adjustment fan-shaped plates 2 can be effectively installed; the other end of the first rotating shaft 10 is fixedly installed with a first slat 13, and the other end of the second rotating shaft 11 is fixedly installed with a second slat 14, a third slat 15 is fixedly installed on the other end of the plurality of third rotating shafts 12, a first fixed block 16 is fixedly connected to one side of the first slat 13 and the second slat 14, two second fixed blocks 17 are fixedly installed on one side of the plurality of third slats 15, a first ball socket is opened on the opposite side of the two first fixed blocks 16, a first ball head is rotatably installed inside the first ball socket, a second ball socket is opened on the opposite side of the two second fixed blocks 17 on the third slat 15, a second ball head 1701 is rotatably installed inside the second ball socket, a connecting rod 18 is fixedly connected between the first ball head and the second ball head 1701 opposite to it and between the two second ball heads 1701 opposite to each other, so that all the air volume adjustment fan plates 2 can be effectively adjusted synchronously.

[0034] A square transmission shaft 19 is fixedly mounted on the other end of the first rotating shaft 10, a first bevel gear 20 is fixedly mounted on the output end of the forward and reverse motor 5, and the transmission adjustment component 6 is transmission-connected between the square transmission shaft 19 and the first bevel gear 20;

[0035] When the square transmission shaft 19 rotates, it will drive the first rotating shaft 10 and the first slat 13 to rotate. The rotation of the first slat 13 will drive the third rotating shaft 12 adjacent to it to rotate synchronously through the first fixed block 16, the first ball head, the connecting rod 18, the second ball head 1701 and the second fixed block 17. The rotation of the third rotating shaft 12 will drive the remaining third rotating shafts 12 to rotate synchronously through the second fixed block 17, the second ball head 1701 and the connecting rod 18. Similarly, the third rotating shaft 12 will drive the second rotating shaft 11 to rotate through the second fixed block 17, the second ball head 1701, the connecting rod 18, the first ball head and the first fixed block 16. Finally, the first rotating shaft 10, the second rotating shaft 11 and all the third rotating shafts 12 rotate synchronously and in the same direction, so that all the air volume adjustment fan plates 2 rotate to adjust the size of the air duct inside the ventilation duct 1 and control the size of the air circulation.

[0036] The air conditioning and purification device has a convenient air volume adjustment structure, which is simple in design and easy to use, avoids control and adjustment failures, ensures the stability of air purification and adjustment, and thus improves the performance of the air purification device.

[0037] Embodiment 3, on the basis of embodiment 1, the transmission adjustment component 6 includes a U-shaped block 21, the upper part of the U-shaped block 21 is rotatably connected with an inner square rotating tube 22 matching the square transmission shaft 19, the square transmission shaft 19 is movably inserted in the inner square rotating tube 22, the middle part and one end of the inner square rotating tube 22 are respectively fixedly connected with a second bevel gear 23 and a third bevel gear 24, the first bevel gear 20 is meshedly connected with the second bevel gear 23, so that the air volume adjustment fan plate 2 can be controlled and adjusted by electric means;

[0038] By starting the forward and reverse motor 5, the first bevel gear 20 drives the second bevel gear 23 to rotate. The rotation of the second bevel gear 23 will drive the inner square rotating tube 22 to rotate. The rotation of the inner square rotating tube 22 will drive the square transmission shaft 19 to rotate. The rotation of the square transmission shaft 19 will drive the first rotating shaft 10 to rotate to control and adjust all the air volume adjustment fan plates 2.

[0039] An inverted T-shaped slide bar 25 is fixedly installed on one side of the interior of the mounting cover 3, and a threaded shaft 27 located above the inverted T-shaped slide bar 25 is rotatably connected to one side of the interior of the mounting cover 3. The lower part of the U-shaped block 21 is slidably sleeved on the surface of the inverted T-shaped slide bar 25, and an internal threaded tube 26 is fixedly installed on the lower part of the U-shaped block 21. The internal threaded tube 26 is threadedly connected to the surface of the threaded shaft 27, and a fourth bevel gear 28 is fixedly connected to one side of the internal threaded tube 26. The manual adjustment component 7 includes a rotating shaft 29 rotatably connected to one side of the interior of the mounting cover 3, and the bottom of the rotating shaft 29 is fixedly installed. There is a first conical cone 30, the inclined surface of the first conical cone 30 is provided with a first transmission tooth segment 31 matched and meshed with the fourth bevel gear 28, a second conical cone 32 is fixedly installed in the middle of the rotating shaft 29, the second conical cone 32 is matched with the second transmission tooth segment 33 of the third bevel gear 24, the maximum angle of the second transmission tooth segment 33 to the third bevel gear 24 is 90°, the second transmission tooth segment 33 is staggered with the first transmission tooth segment 31, and a worm gear 34 is fixedly installed on the top of the rotating shaft 29, so that transmission and adjustment can be effectively carried out.

[0040] A worm 35 is rotatably connected to one side of the mounting cover 3. The worm 35 extends to the inside of the mounting cover 3 and is meshed with a worm wheel 34. A rotating wheel 36 is fixedly installed on the end of the worm 35 located outside the mounting cover 3, so that manual adjustment can be effectively performed. An angle pointer 37 is fixedly installed on the surface of the worm 35 located outside the mounting cover 3. An angle measuring ruler 38 aligned with the angle pointer 37 is fixedly installed on one side of the mounting cover 3. The angle measuring ruler 38 matches the rotation angle of the air volume adjustment sector plate 2, so that accurate angle adjustment can be performed.

[0041] When the forward and reverse motor 5 fails and cannot be used, the worm 35 is rotated by the rotating wheel 36, and the rotation of the worm 35 drives the worm wheel 34 to rotate, and the rotation of the worm wheel 34 drives the rotating shaft 29 to rotate, and the rotation of the rotating shaft 29 drives the second conical truncated cone 32 and the second transmission tooth segment 33 as well as the first conical truncated cone 30 and the first transmission tooth segment 31 to rotate, and the rotation of the first transmission tooth segment 31 drives the fourth bevel gear 28 to rotate, and the rotation of the fourth bevel gear 28 drives the threaded shaft 27 to rotate, and the rotation of the threaded shaft 27 causes the internal threaded tube 26 to drive the U-shaped block 21 to move on its surface, so that the U-shaped block 21 can stably slide on the surface of the inverted T-shaped slide bar 25;

[0042] The movement of the U-shaped block 21 drives the inner square rotating tube 22, the second bevel gear 23 and the third bevel gear 24 to move, so that the inner square rotating tube 22 moves on the surface of the square transmission shaft 19 to separate the second bevel gear 23 from the first bevel gear 20. When the first transmission gear segment 31 separates from the fourth bevel gear 28, the U-shaped block 21 stops moving, and the third bevel gear 24 moves to the second conical truncated cone 32.

[0043] As the rotating shaft 29 continues to rotate, the second transmission tooth segment 33 will transmit the rotation of the third bevel gear 24, and the rotation of the third bevel gear 24 will drive the inner square rotating tube 22 and the square transmission shaft 19 to rotate to control and adjust all the air volume adjustment fan plates 2.

[0044] The air conditioning and purification device has a reliable manual control adjustment structure, which can perform stable and effective air volume adjustment when the electric mode cannot be used, thereby ensuring the reliability and stability of the use of the air purification device.

[0045] The manual adjustment component of the air conditioning purification device adopts an intermittent transmission method, and the intermittently transmitted manual adjustment component and the rotation adjustment of the motor will not interfere with each other; when the manual adjustment component is used for adjustment, the third bevel gear 24 is meshed with the second transmission tooth segment 33, and the second bevel gear 23 is separated from the first bevel gear 20 to perform manual adjustment; and when the motor is used for adjustment, the third bevel gear 24 is separated from the second transmission tooth segment, and the second bevel gear 23 is meshed with the first bevel gear 20 to perform electric adjustment. The above-mentioned manual and electric dual adjustment conversion modes can ensure the reliability and stability of the use of the air purification device.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air conditioning and purification device, comprising a ventilation duct (1), characterized in that: The ventilation duct (1) is provided with a plurality of air volume regulating fan-shaped plates (2) at equal intervals in an annular manner inside the ventilation duct (1). The plurality of air volume regulating fan-shaped plates (2) form a circular baffle plate that matches the inner diameter of the ventilation duct (1). A mounting cover (3) is fixedly mounted on the surface of the ventilation duct (1). A fan-shaped plate synchronous regulating mechanism (4) is mounted on the surface of the ventilation duct (1) located inside the mounting cover (3). The plurality of air volume regulating fan-shaped plates (2) are all connected to the fan-shaped plate synchronous regulating mechanism (4) in a transmission manner. A forward and reverse motor (5) is mounted on one end of the top of the mounting cover (3). A transmission regulating component (6) is mounted in the middle of one side of the mounting cover (3). The joint component (6) is drivingly connected between the fan-shaped plate synchronous adjustment mechanism (4) and the output end of the forward and reverse motor (5); a manual adjustment component (7) is installed in the middle of one side of the installation cover (3); the manual adjustment component (7) is drivingly connected to the transmission adjustment component (6); a middle round block (8) is provided inside the ventilation duct (1) and between the ends of a plurality of air volume adjustment fan-shaped plates (2); both ends of the middle round block (8) are fixedly installed with L-shaped rods (9) at equal distances in a circular shape; the L-shaped rods (9) at both ends of the middle round block (8) are symmetrically arranged, and the ends of the L-shaped rods (9) away from the middle round block (8) are fixedly connected to the inner wall of the ventilation duct (1); The fan-shaped plate synchronous adjustment mechanism (4) comprises a first rotating shaft (10), a second rotating shaft (11) and a plurality of third rotating shafts (12); the first rotating shaft (10), the second rotating shaft (11) and the plurality of third rotating shafts (12) are rotatably connected to the ventilation duct (1) at equal angles, and one end of the first rotating shaft (10), the second rotating shaft (11) and the plurality of third rotating shafts (12) are rotatably connected to the circumferential surface of the middle circular block (8); and the plurality of air volume adjustment fan-shaped plates (2) are respectively fixedly connected to the surfaces of the first rotating shaft (10), the second rotating shaft (11) and the plurality of third rotating shafts (12); A first slat (13) is fixedly mounted on the other end of the first rotating shaft (10), a second slat (14) is fixedly mounted on the other end of the second rotating shaft (11), and a third slat (15) is fixedly mounted on the other end of a plurality of third rotating shafts (12). A first fixing block (16) is fixedly connected to one side of the first slat (13) and the second slat (14), and two second fixing blocks (17) are fixedly mounted to one side of a plurality of third slats (15). A first ball socket is provided on one side opposite to the two first fixing blocks (16), and a first ball head is rotatably mounted inside the first ball socket. A second ball socket is provided on one side opposite to the two second fixing blocks (17) on the third slat (15), and a second ball head (1701) is rotatably mounted inside the second ball socket. A connecting rod (18) is fixedly connected between the first ball head and the second ball head (1701) opposite to it, and between the two second ball heads (1701) opposite to each other. A square transmission shaft (19) is fixedly mounted on the other end of the first rotating shaft (10); a first bevel gear (20) is fixedly mounted on the output end of the forward and reverse rotating motor (5); a transmission adjustment component (6) is transmission-connected between the square transmission shaft (19) and the first bevel gear (20); the transmission adjustment component (6) comprises a U-shaped block (21); an upper portion of the U-shaped block (21) is rotationally connected to an inner square rotating tube (22) matching the square transmission shaft (19); the square transmission shaft (19) is movably inserted into the inner square rotating tube (22); a second bevel gear (23) and a third bevel gear (24) are fixedly mounted on the middle portion and one end of the inner square rotating tube (22), respectively; and the first bevel gear (20) is meshingly connected to the second bevel gear (23); An inverted T-shaped slide bar (25) is fixedly mounted on one side of the interior of the mounting cover (3), and a threaded shaft (27) located above the inverted T-shaped slide bar (25) is rotatably connected to one side of the interior of the mounting cover (3); the lower portion of the U-shaped block (21) is slidably sleeved on the surface of the inverted T-shaped slide bar (25), and an internal threaded tube (26) is fixedly mounted on the lower portion of the U-shaped block (21), the internal threaded tube (26) is threadedly connected to the surface of the threaded shaft (27), and a fourth bevel gear (28) is fixedly connected to one side of the internal threaded tube (26); The manual adjustment component (7) comprises a rotating shaft (29) rotatably connected to one side of the interior of the mounting cover (3); a first conical truncated cone (30) is fixedly mounted on the bottom of the rotating shaft (29); a first transmission tooth segment (31) matching and meshingly connected with the fourth bevel gear (28) is provided on the inclined surface of the first conical truncated cone (30); a second conical truncated cone (32) is fixedly mounted on the middle of the rotating shaft (29); the second conical truncated cone (32) matches a second transmission tooth segment (33) of the third bevel gear (24); the second transmission tooth segment (33) is staggered with the first transmission tooth segment (31); and a worm gear (34) is fixedly mounted on the top of the rotating shaft (29); A worm (35) is rotatably connected to one side of the mounting cover (3), the worm (35) extends into the interior of the mounting cover (3) and is meshed with a worm wheel (34), a rotating wheel (36) is fixedly mounted on the end of the worm (35) located outside the mounting cover (3), an angle pointer (37) is fixedly mounted on the surface of the worm (35) located outside the mounting cover (3), and an angle measuring ruler (38) aligned with the angle pointer (37) is fixedly mounted on one side of the mounting cover (3).

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