Energy-saving airflow valve

Abstract

The energy-saving type airflow valve comprises a valve body, a driving assembly, a driving fan blade, a transmission structure, a driven fan blade and a flow guide structure, the driving assembly is installed on the outer wall of the valve body, and the driving fan blade, the transmission structure and the driven fan blade are located on the portion, close to an air outlet, of the inner side of the valve body. The driving assembly is rotationally connected with the driving fan blade, the driven fan blade is rotationally connected with the valve body, the driving fan blade and the driven fan blade are connected through a transmission structure, the transmission structure is fixedly connected with the inner wall of the valve body, and a flow guide structure is installed at the air inlet part of the valve body. When the airflow valve is in a closed state, the driving fan blade and the driven fan blades form a baffle. Compared with an existing single-fan-blade design, the multi-fan-blade design enables the turbulence coefficient to be smaller, airflow at the air outlet is more stable, the air inlet is provided with a flow guide structure, wind resistance is smaller, and more energy is saved.

Description

Technical Field

[0001] The invention belongs to the technical field of air flow valves, and in particular relates to an energy-saving air flow valve. Background Art

[0002] The airflow valve design can be used in scenarios with strict requirements on indoor environment, airflow flow, etc. It can also be used as an important component in key environmental control systems to provide customers with stable and reliable airflow control, which can effectively prevent the escape or diffusion of gases containing toxic and harmful components, and safeguard the safety and health of indoor personnel. At the same time, it also has energy-saving strategies to help customers reduce energy consumption, improve efficiency, and develop more sustainably.

[0003] Existing energy-saving airflow valves have a single-blade design, and both the air inlet and the air outlet use a single rotatable fan blade to control the airflow. There are deficiencies in the control of airflow stability, and the energy-saving efficiency needs to be improved. Summary of the invention

[0004] The purpose of the present invention is to provide an energy-saving air flow valve to solve the above-mentioned problems existing in the prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An energy-saving air flow valve, comprising a valve body, a driving assembly, an active fan blade, a transmission structure, a driven fan blade, and a guide structure, wherein the driving assembly is installed on the outer wall of the valve body, the active fan blade, the transmission structure, and the driven fan blade are located on the inner side of the valve body near the air outlet, the driving assembly is rotatably connected to the active fan blade, the driven fan blade is rotatably connected to the valve body, the active fan blade is connected to the driven fan blade through the transmission structure, the transmission structure is fixedly connected to the inner wall of the valve body, and the air inlet part of the valve body is installed with the guide structure; When the airflow valve is in a closed state, two adjacent driven blades are engaged, the active blade is engaged with the adjacent driven blade, and the active blade and the plurality of driven blades form a baffle for blocking the airflow from the air inlet of the valve body to the air outlet. It should be understood that the inner wall of the valve body has a convex portion to ensure that when the active blade and the driven blade are in this state, the space not covered by the active blade and the driven blade can be filled, and the space is in the gap position where the airflow is not blocked by the baffle formed by the active blade and the plurality of driven blades; When the airflow valve is in an open state, relative to the closed state, the active blades and the driven blades change the same angle under the action of the transmission structure. It should be understood that when the active blades rotate clockwise, the driven blades rotate clockwise, and when the active blades rotate counterclockwise, the driven blades rotate counterclockwise.

[0006] Preferably, the transmission structure is fixed by a mounting assembly installed inside the valve body.

[0007] Preferably, the installation assembly includes a positioning plate, a connecting plate, a shoulder rod, a threaded rod and a nut. The inner wall of the valve body is provided with a slot in which the positioning plate can be inserted. The positioning plate is fixedly installed in the slot of the valve body. One end of the connecting plate is fixedly connected to the positioning plate, and the other end of the connecting plate is fixed with a shoulder rod. The threaded rod has a threaded end with a nut installed on it, and the other end of the threaded rod is fixedly connected to the shoulder rod. The threaded rod passes through the transmission structure, and one end of the transmission structure is clamped on the shoulder rod and the other end is against the nut.

[0008] It should be understood that the shape of the valve body slot is similar to or identical to that of the positioning plate; when the transmission structure is clamped on the shoulder rod, the length of the threaded rod exposed from the transmission structure is less than the length of the thread groove of the nut.

[0009] Preferably, the transmission structure includes a first protective cover, a first transmission gear, a driving gear, a driven gear, and a second protective cover. The first protective cover has two sides respectively abutting against the nut and the second protective cover. The second protective cover is stuck in the shoulder rod. The first protective cover and the second protective cover are combined under the restriction of the shoulder rod and the nut to form a protective cover with a through hole. The first transmission gear, the driving gear, and the driven gear are located inside the protective cover. The first transmission gear is rotatably connected to the first protective cover. The first transmission gear is meshed with the driving gear and the driven gear. The driving gear is fixedly connected to the driving fan blades, and the driven gear is fixed on the driven fan blades.

[0010] It should be understood that the hole diameter of the first protective cover is larger than the major diameter of the threaded rod, and the second protective cover has a stepped hole that can clamp the shoulder rod. The threaded rod passes through the stepped hole, and there is no interference movement between the threaded rod and the first transmission gear, the driving gear, the driven gear, and the second transmission gear.

[0011] Preferably, the transmission structure further includes a second transmission gear, the second transmission gear is meshed with the driving gear and the driven gear, and the second transmission gear is rotatably connected to the second protective cover.

[0012] It should be understood that the rotation center line of the second transmission gear intersects with the rotation center lines of the driving gear and the driven gear. The second transmission gear is a hyperbolic gear. The driving gear and the driven gear can adopt straight bevel gears, helical bevel gears, zero-degree bevel gears and curved bevel gears according to their tooth line shape and direction.

[0013] Preferably, the active fan blade has an active fan blade front shaft and an active fan blade rear shaft, the active fan blade front shaft is fixedly connected to the active gear, the active fan blade rear shaft transmits the rotational torque of the drive assembly, and the active fan blade front shaft is in smooth contact with the surface of the protective cover through hole formed by the first protective cover and the second protective cover.

[0014] It should be understood that the valve body is provided with a mounting hole for the active fan blade front shaft at the position where the drive assembly is mounted, and the active fan blade front shaft passes through the hole and is in smooth contact.

[0015] Preferably, the driven fan blade has a driven fan blade front shaft and a driven fan blade rear shaft, the driven fan blade front shaft is fixedly mounted on the driven gear, the driven fan blade rear shaft is rotationally connected to the inner wall of the valve body, and the driven fan blade front shaft is in smooth contact with the surface of the protective cover through hole formed by the first protective cover and the second protective cover.

[0016] It should be understood that the valve body is provided with a mounting hole for the front shaft of the driven fan blade at the position where the driven fan blade is mounted, and the front shaft of the driven fan blade passes through the hole and is in smooth contact.

[0017] Preferably, the guide structure includes a guide plate, a connecting bent plate, a guide plate and a curved surface. A plurality of the connecting bent plates are spaced apart from the guide plate and fixedly connected to form a closed loop. The guide plate is installed on the surface of the guide plate that fits the inner wall of the valve body. The guide plate has a curved surface. The valve body also includes a guide groove and a limit block. A guide groove and a limit block are provided at one end of the air outlet of the valve body. When the guide plate is installed in the guide groove, the connecting bent plate abuts against the limit block.

[0018] It should be understood that the number of connecting bent plates and guide plates is not specifically limited according to actual design choices. Before or before the guide plate reaches the end position of the guide groove, the connecting bent plates can be resting on the limit blocks. The design length of the guide groove is selected according to the actual design, which can facilitate the installation of a fixed guide structure. The guide structure design uses the "Venturi effect", which has low wind resistance and energy saving.

[0019] Preferably, the driving assembly includes a motor and a hood, the hood is fixedly connected to the valve body, a motor is fixed to the inner wall of the hood, and the motor drives the active fan blades to rotate.

[0020] Preferably, an electrical cabinet is installed on the outer surface of the valve body, and the electrical cabinet is electrically connected to the drive assembly. Beneficial Effects

[0021] 1. Through the combination of the transmission structure, the active fan blades and the driven fan blades, when the motor of the driving component drives the active fan blades to rotate a certain angle, through the design of the transmission structure, the combination of the active gear and the first transmission gear, and the combination of the driven gear and the second transmission gear, the active fan blades and the driven fan blades can rotate synchronously. When the wind flows into the air inlet of the valve body and leaves the air outlet, the wind flows through the active fan blades and multiple driven fan blades to form multiple split flows. Compared with the design method in which the active fan blades and multiple driven fan blades are single blades and the overall rotation has two parts of wind flow, the turbulence coefficient becomes smaller and the airflow at the air outlet is more stable.

[0022] 2. By setting the limit block and the guide groove, during the installation of the guide structure, the limit block abuts against the connecting bent plate, which can facilitate the guide plate to be installed into the guide groove, and further complete the fixation of the guide structure. The combined design of the connecting bent plate and the guide plate of the guide structure has a Venturi effect, which reduces the wind resistance of the air inlet, saves energy and improves efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a cross-sectional view of an embodiment of the present invention.

[0024] Figure 2 For the embodiment of the present invention Figure 1 Schematic diagram of enlarged area A in FIG.

[0025] Figure 3 It is an overall schematic diagram of the first viewing angle of an embodiment of the present invention.

[0026] Figure 4 Schematic diagram of a valve body in an embodiment of the present invention.

[0027] Figure 5 It is an overall schematic diagram of the second viewing angle of an embodiment of the present invention.

[0028] Figure 6 It is a three-dimensional schematic diagram of the installation component in the embodiment of the present invention.

[0029] Figure 7 It is a schematic diagram of the coordination of the active fan blades, the transmission structure, and the driven fan blades in an embodiment of the present invention.

[0030] Figure 8 It is a three-dimensional schematic diagram of the guide structure in an embodiment of the present invention.

[0031] Fig. 9 Schematic diagram of a driving assembly in an embodiment of the present invention.

[0032] As shown in the figure: 1. valve body; 11. guide groove; 12. limit block; 2. active fan blade; 21. active fan blade front shaft; 22. active fan blade rear shaft; 3. transmission structure; 31. first protective cover; 32. first transmission gear; 33. driving gear; 34. driven gear; 35. second protective cover; 36. second transmission gear; 4. driven fan blade; 41. driven fan blade front shaft; 42. driven fan blade rear shaft; 5. installation assembly; 51. positioning plate; 52. connecting plate; 53. shoulder rod; 54. threaded rod; 55. nut; 6. guide structure; 61. guide plate; 62. connecting bent plate; 63. guide plate; 64. arc surface; 7. drive assembly; 71. motor; 72. hood; 8. electrical cabinet. DETAILED DESCRIPTION

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0034] In this embodiment, reference Figure 1 and Fig. 9 , an energy-saving air flow valve is provided, including a valve body 1, a driving component 7, an active fan blade 2, a transmission structure 3, a driven fan blade 4, and a guide structure 6. The driving component 7 is installed on the outer wall of the valve body 1. The driving component 7 includes a motor 71 and a hood 72. The hood 72 is provided with a plurality of heat dissipation holes, which are helpful for the heat dissipation of the motor 71 and protect the motor 71. The motor 71 is a servo motor, which can realize the rotation of the active fan blade 2 by a certain angle through program control. The active fan blade 2 transmits power to the driven fan blade 4 through the transmission structure 3. The driven fan blade 4 and the active fan blade 2 have the same structural material and can be produced in a way. The power transmission function of the two is different. The active fan blade 2 is driven by the motor 71, and the active fan blade 2 drives the driven fan blade 4 to rotate the driven fan blade 4 at the same rotation angle as the active fan blade 2. The hood 72 is fixedly connected to the valve body 1 by welding or other methods. The motor 71 is fixed on the inner wall of the hood 72, and the motor 71 drives the active fan blade 2 to rotate. Figure 3 As shown, an electrical cabinet 8 is installed on the outer surface of the valve body 1, and the electrical cabinet 8 is electrically connected to the driving assembly 7. The electrical cabinet 8 meets the working requirements of the motor 71. The active fan blades 2, the transmission structure 3, and the driven fan blades 4 are located on the inner side of the valve body 1 near the air outlet; refer to Figure 1 and Figure 2The driving assembly 7 is rotationally connected with the active fan blade 2. The active fan blade 2 has an active fan blade front shaft 21 and an active fan blade rear shaft 22. The active fan blade front shaft 21 is fixedly connected with the driving gear 33. The active fan blade rear shaft 22 transmits the rotational torque of the driving assembly 7 motor 71. The valve body 1 is provided with a mounting hole for the active fan blade front shaft 21 at the position where the driving assembly 5 is installed. The active fan blade front shaft 21 passes through the hole and contacts smoothly, thereby improving the movement stability of the active fan blade front shaft 21. The active fan blade front shaft 21 contacts smoothly with the hole. Compared with the hole-axis clearance matching mode, the clearance is smaller, which reduces the loss of wind flow, so that when the airflow valve is in the open state, more wind flows from the air inlet to the air outlet. The active fan blade front shaft 21 is in smooth contact with the surface of the protective cover through hole formed by the first protective cover 31 and the second protective cover 35. The driven fan blade 4 is rotatably connected to the valve body 1. The driven fan blade 4 has a driven fan blade front shaft 41 and a driven fan blade rear shaft 42. The driven fan blade front shaft 41 is fixedly installed on the driven gear 34. The driven fan blade rear shaft 42 is rotatably connected to the inner wall of the valve body 1. The valve body 1 is provided with a mounting hole for the driven fan blade front shaft 41 at the position where the driven fan blade 4 is installed. The driven fan blade front shaft 41 passes through the hole and is in smooth contact. The driven fan blade front shaft 41 is in smooth contact with the hole. Compared with the hole-axis clearance matching mode, the clearance is smaller to reduce the loss of wind flow, so that when the airflow valve is in the open state, the wind flow flows more from the air inlet to the air outlet. The driven fan blade front shaft 41 is in smooth contact with the surface of the protective cover through hole formed by the first protective cover 31 and the second protective cover 35. refer to Figure 5 The active fan blades 2 and the driven fan blades 4 are connected through a transmission structure 3, and the transmission structure 3 is fixedly connected to the inner wall of the valve body 1. The transmission structure 3 is fixed by a mounting assembly 5 installed on the inner side of the valve body 1. Compared with the existing single-blade design (assuming that the combination of the active fan blades 2 and multiple driven fan blades 4 in this embodiment is taken as an example, the active fan blades 2 and the multiple driven fan blades 4 form a baffle when the airflow valve is closed, and the baffle moves around a rotation axis, and the air outlet is divided into two parts, and the air outlet effect is not good), the active fan blades 2 and the multiple driven fan blades 4 form a multi-blade design, which reduces the turbulence coefficient and makes the airflow at the air outlet of the valve body 1 more stable.

[0035] refer to Figure 1 and Figure 2The transmission structure 3 includes a first protective cover 31, a first transmission gear 32, a driving gear 33, a driven gear 34, and a second protective cover 35. The two sides of the first protective cover 31 are respectively against the nut 55 and the second protective cover 35. The second protective cover 35 is stuck in the shoulder rod 53. The first protective cover 31 and the second protective cover 35 are combined and formed with the shoulder rod 53 and the nut 55. The protective cover with a through hole is formed. The first transmission gear 32, the driving gear 33, and the driven gear 34 are located inside the protective cover. The first transmission gear 32 is rotatably connected with the first protective cover 31. The first transmission gear 32 is a hyperbolic gear. The first transmission gear 32 is meshed with the driving gear 33 and the driven gear 34. The driving gear 33 is fixedly connected to the driving blade 2, and the driven gear 34 is fixed on the driven blade 4. The transmission structure 3 also includes a second transmission gear 36. The rotation center line of the second transmission gear 36 is aligned with the driving gear 3 3. The rotation center lines of the driven gear 34 intersect, the second transmission gear 36 is a hyperbolic gear, the driving gear 33 and the driven gear 34 can be straight bevel gears, helical bevel gears, zero-degree bevel gears and curved bevel gears according to their tooth line shapes and directions, the first transmission gear 32 and the driving gear 33 and the driven gear 34 can realize the change of the torque rotation center, taking the plane coordinate system as an example, the rotation center line of the first transmission gear 32 is the Y axis, the rotation center line of the driving gear 33 and the driven gear 34 is the X axis, and the rotation power is transmitted from the Y axis to the X axis to realize vertical change, the cooperation of the second transmission gear 36 with the driving gear 33 and the driven gear 34 is similar to the above effect, the existence of the second transmission gear 36, on the basis of the existence of the first transmission gear 32, makes the movement of the driving gear 33 and the driven gear 34 more stable, and the second transmission gear 36 is meshed with the driving gear 33 and the driven gear 34; refer to Figure 1 and Figure 2 The second transmission gear 36 is rotatably connected to the second protective cover 35. The first transmission gear 32 and the second transmission gear 36 have the same or similar structures. The first transmission gear 32 is connected to the first protective cover 31 in a similar or identical manner. For example, the first protective cover 31 or the second protective cover 35 has an annular groove, and the first transmission gear 32 or the second transmission gear 36 has an annular sleeve that can be inserted into the annular groove through a bearing. Figure 2It is shown in the figure; a possible implementation mode, the first transmission gear 32, the second transmission gear 36 and the threaded rod 54 are connected by bearings with clearance fit (similar to hole-shaft fit); another possible implementation mode (combining the above two modes, but without bearings), the first protective cover 31 or the second protective cover 35 has an annular groove, the first transmission gear 32 or the second transmission gear 36 has an annular sleeve (without bearings installed) that is inserted into the annular groove, the first transmission gear 32, the second transmission gear 36 and the threaded rod 54 are clearance fit (without bearings installed), which can limit the movement of the first transmission gear 32 and the second transmission gear 36, and realize fixed rotation around the axis under the rotation torque. The aperture of the first protective cover 31 is larger than the major diameter of the threaded rod 54, the second protective cover 35 has a stepped hole, which can clamp the shaft shoulder rod 53, and the threaded rod 54 passes through the stepped hole, and there is no interference movement between the threaded rod 54 and the first transmission gear 32, the driving gear 33, the driven gear 34, and the second transmission gear 36.

[0036] refer to Figure 2 and Figure 6 The mounting assembly 5 includes a positioning plate 51, a connecting plate 52, a shoulder rod 53, a threaded rod 54 and a nut 55. The inner wall of the valve body 1 is provided with a slot that can be inserted into the positioning plate 51. The positioning plate 51 is fixedly installed in the slot of the valve body 1 and is fixed by welding, bonding or other connection processes. The shape of the slot of the valve body 1 is similar or the same as that of the positioning plate 51. One end of the connecting plate 52 is fixedly connected to the positioning plate 51, and the other end of the connecting plate 52 is fixed with the shoulder rod 53. The threaded rod 54 has a threaded end with a nut 55 installed, and the other end of the threaded rod 54 is fixedly connected to the shoulder rod 53. The threaded rod 54 passes through the transmission structure 3. When the transmission structure 3 is stuck on the shoulder rod 53, the length of the threaded rod 54 exposed from the transmission structure 3 is less than the length of the thread groove of the nut 55. One end of the transmission structure 3 is stuck on the shoulder rod 53 and the other end is against the nut 55.

[0037] refer to Figure 1 and Figure 8 The air inlet portion of the valve body 1 is provided with a guide structure 6, the guide structure 6 comprises a guide plate 61, a connecting bent plate 62, a guide plate 63 and an arc surface 64, a plurality of connecting bent plates 62 and the guide plates 63 are arranged at intervals and fixedly connected to form a closed loop, the number of connecting bent plates 62 and the guide plates 63 is not specifically limited according to the actual design selection, the guide plate 61 is installed on the surface of the guide plate 63 that is attached to the inner wall of the valve body 1, and the guide plate 63 has an arc surface 64, such as Figure 4As shown, the valve body 1 also includes a guide groove 11 and a limit block 12. The guide groove 11 and the limit block 12 are provided at one end of the air outlet of the valve body 1. When the guide plate 61 is inserted into the guide groove 11, the connecting bent plate 62 abuts against the limit block 12. When the guide plate 61 reaches the end position of the guide groove 11 or before, the connecting bent plate 62 can abut against the limit block 12. The design length of the guide groove 11 is selected according to the actual design, and the guide structure 6 can be conveniently installed and fixed. In this example, when the guide plate 61 reaches the end position of the guide groove 11, the connecting bent plate 62 can abut against the limit block 12, and the guide structure 6 is combined with the valve body 1 by welding, bonding or other connection processes. The combined design of the connecting bent plate 62 and the guide plate 63 in the guide structure 6 uses the "Venturi effect", which has small wind resistance and energy saving.

[0038] refer to Figure 5 and Figure 7 When the airflow valve is in a closed state, two adjacent driven blades 4 are engaged, the active blade 2 is engaged with the adjacent driven blade 4, the active blade 2 and the plurality of driven blades 4 form a baffle for blocking the airflow from the air inlet of the valve body 1 to the air outlet, the inner wall of the valve body 1 has a convex portion, to ensure that when the active blades 2 and the driven blades 4 are in this state, the space not covered by the active blades 2 and the driven blades 4 can be filled, the space is in the gap position where the active blades 2 and the plurality of driven blades 4 form a baffle that does not block the airflow, in this state, the airflow cannot reach the air outlet from the air inlet of the valve body 1.

[0039] When the air flow valve is in an open state, which is not shown in the attached figure, relative to the closed state, the active blades 4 and the driven blades 2 change angles at the same level under the action of the transmission structure 3. When the active blades 4 rotate clockwise, the driven blades 2 rotate clockwise. When the active blades 4 rotate counterclockwise, the driven blades 2 rotate counterclockwise. Through the combination of the transmission structure 3, the active blades 2 and the driven blades 4, when the motor 71 of the drive assembly 7 drives the active blades 2 to rotate a certain angle, through the design of the transmission structure 3, the combination of the active gear 33 and the first transmission gear 32, and the combination of the driven gear 34 and the second transmission gear 36, the active blades 2 and the driven blades 4 can rotate synchronously. When the wind flows into the air inlet of the valve body 1 and leaves the air outlet, the wind flows through the active blades 2 and the multiple driven blades 4 to form multiple split flows. Compared with the design that the active blades 2 and the multiple driven blades 4 are single blades and the overall rotation has two parts of wind flow, the turbulence coefficient becomes smaller, and the airflow at the air outlet of the valve body 1 is more stable.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An energy-saving air flow valve, characterized in that: The valve body (1) comprises a valve body (1), a driving component (7), an active fan blade (2), a transmission structure (3), a driven fan blade (4), and a flow guide structure (6); the driving component (7) is installed on the outer wall of the valve body (1); the active fan blade (2), the transmission structure (3), and the driven fan blade (4) are located on the inner side of the valve body (1) near the air outlet; the driving component (7) is rotationally connected to the active fan blade (2); the driven fan blade (4) is rotationally connected to the valve body (1); the active fan blade (2) and the driven fan blade (4) are connected via the transmission structure (3); the transmission structure (3) is fixedly connected to the inner wall of the valve body (1); and the air inlet of the valve body (1) is installed with the flow guide structure (6); When the air flow valve is in a closed state, two adjacent driven blades (4) are engaged, the active blade (2) is engaged with the adjacent driven blade (4), and the active blade (2) and the plurality of driven blades (4) form a baffle for blocking the air flow from the air inlet of the valve body (1) to the air outlet; When the airflow valve is in an open state, relative to when it is in a closed state, the active fan blades (4) and the driven fan blades (2) change at the same angle under the action of the transmission structure (3).

2. The energy-saving air flow valve according to claim 1, characterized in that: The transmission structure (3) is fixed by means of a mounting assembly (5) mounted on the inner side of the valve body (1).

3. The energy-saving air flow valve according to claim 2, characterized in that: The mounting assembly (5) comprises a positioning plate (51), a connecting plate (52), a shoulder rod (53), a threaded rod (54) and a nut (55); the inner wall of the valve body (1) is provided with a slot into which the positioning plate (51) can be inserted; the positioning plate (51) is fixedly mounted in the slot of the valve body (1); one end of the connecting plate (52) is fixedly connected to the positioning plate (51); the other end of the connecting plate (52) is fixedly connected to the shoulder rod (53); the threaded rod (54) has a threaded end with a nut (55) installed thereon; the other end of the threaded rod (54) is fixedly connected to the shoulder rod (53); the threaded rod (54) passes through the transmission structure (3); one end of the transmission structure (3) is clamped on the shoulder rod (53) and the other end abuts against the nut (55).

4. The energy-saving air flow valve according to claim 1, characterized in that: The transmission structure (3) comprises a first protective cover (31), a first transmission gear (32), a driving gear (33), a driven gear (34), and a second protective cover (35); two sides of the first protective cover (31) respectively abut against a nut (55) and the second protective cover (35); the second protective cover (35) is clamped into the shoulder rod (53); the first protective cover (31) and the second protective cover (35) are combined under the restriction of the shoulder rod (53) and the nut (55) to form a protective cover with a through hole; the first transmission gear (32), the driving gear (33), and the driven gear (34) are located inside the protective cover; the first transmission gear (32) is rotatably connected to the first protective cover (31); the first transmission gear (32) is meshed with the driving gear (33) and the driven gear (34); the driving gear (33) is fixedly connected to the driving blade (2); and the driven gear (34) is fixed to the driven blade (4).

5. The energy-saving air flow valve according to claim 4, characterized in that: The transmission structure (3) further comprises a second transmission gear (36), the second transmission gear (36) being meshed with the driving gear (33) and the driven gear (34), and the second transmission gear (36) being rotationally connected to the second protective cover (35).

6. The energy-saving air flow valve according to claim 4, characterized in that: The active fan blade (2) comprises an active fan blade front shaft (21) and an active fan blade rear shaft (22); the active fan blade front shaft (21) is fixedly connected to the active gear (33); the active fan blade rear shaft (22) transmits the rotational torque of the drive assembly (7); and the active fan blade front shaft (21) is in smooth contact with the surface of a protective cover through hole formed by the first protective cover (31) and the second protective cover (35).

7. The energy-saving air flow valve according to claim 4, characterized in that: The driven blade (4) comprises a driven blade front shaft (41) and a driven blade rear shaft (42); the driven blade front shaft (41) is fixedly mounted on the driven gear (34); the driven blade rear shaft (42) is rotatably connected to the inner wall of the valve body (1); and the driven blade front shaft (41) is in smooth contact with the surface of a protective cover through hole formed by the first protective cover (31) and the second protective cover (35).

8. The energy-saving air flow valve according to claim 1, characterized in that: The guide structure (6) comprises a guide plate (61), a connecting bent plate (62), a guide plate (63) and an arcuate surface (64); a plurality of the connecting bent plates (62) and the guide plate (63) are arranged at intervals and fixedly connected to form a closed loop; the guide plate (61) is mounted on the surface of the guide plate (63) that abuts against the inner wall of the valve body (1); the guide plate (63) has an arcuate surface (64); the valve body (1) further comprises a guide groove (11) and a limit block (12); one end of the air outlet of the valve body (1) is provided with the guide groove (11) and the limit block (12); when the guide plate (61) is inserted into the guide groove (11), the connecting bent plate (62) abuts against the limit block (12).

9. The energy-saving air flow valve according to claim 1, characterized in that: The driving assembly (7) comprises a motor (71) and a hood (72); the hood (72) is fixedly connected to the valve body (1); the motor (71) is fixed to the inner wall of the hood (72); and the motor (71) drives the active fan blades (2) to rotate.

10. The energy-saving air flow valve according to claim 1, characterized in that: An electrical cabinet (8) is installed on the outer surface of the valve body (1), and the electrical cabinet (8) is electrically connected to the drive assembly (7).

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