Air valve with valve clack control mechanism

Abstract

The utility model relates to the technical field of air valves, and discloses an air valve with a valve clack control mechanism, which comprises a first exhaust pipe, a second exhaust pipe is arranged on the rear side of the first exhaust pipe, a valve clack component is arranged in the first exhaust pipe, a valve clack driving component is arranged at the top of the first exhaust pipe, and a valve clack control mechanism is arranged on the valve clack driving component. A mounting frame is fixedly mounted on the front side of the first exhaust pipe, butt joint grooves are formed in the left side and the right side of the interior of the mounting frame, a grating frame is arranged in the mounting frame, and grating blades are fixedly mounted in the grating frame. According to the air valve with the valve clack control mechanism, an arranged servo motor is matched with a second rotating shaft, the second rotating shaft drives a first gear to rotate, the first gear drives a second gear to rotate, and the second gear drives a valve clack assembly to rotate, so that the air volume is controlled, and through the design of the first gear and the second gear, the rotation angle of the valve clack assembly can be accurately controlled; therefore, the air volume is accurately controlled, and high-precision adjustment of the air valve is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air valves, in particular to an air valve with a valve flap control mechanism. Background Art

[0002] Duct valves mainly use manual air valves or electric air valves. Manual air valves require manual adjustment of the opening, which is laborious, inconvenient to use, and has low work efficiency. Existing electric air valves generally have problems such as poor sealing, short service life, and poor reliability. They are also unable to accurately control the air volume.

[0003] China Utility Model Patent Publication No.: CN 214662101 U, discloses: an intelligent high-precision wind, which is convenient for cleaning dust on the surface of the air valve blades and replacing worn sealing strips, which is convenient and fast and reduces costs, but cannot accurately control the rotation angle of the air valve blades, thereby unable to accurately control the air volume, and no filtering device is set, resulting in dust accumulation on the air valve blades, affecting the normal operation of the air valve blades and reducing practicality. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a wind valve with a valve flap control mechanism, which can effectively solve the problem that the air volume cannot be accurately controlled in the prior art.

[0005] The technical solution adopted by the utility model is: an air valve with a valve flap control mechanism, comprising a first exhaust duct, a second exhaust duct is arranged at the rear side of the first exhaust duct, a valve flap assembly is arranged inside the first exhaust duct, a valve flap driving assembly is arranged on the top of the first exhaust duct, a mounting frame is fixedly installed on the front side of the first exhaust duct, docking grooves are provided on the left and right sides of the interior of the mounting frame, a grille frame is arranged inside the mounting frame, grille blades are fixedly installed inside the grille frame, docking blocks are fixedly installed on the left and right sides of the grille frame, a support plate is fixedly installed inside the second exhaust duct, a mounting seat is fixedly installed on the top of the support plate, an air filter is fixedly installed on the top of the mounting seat, a groove two is arranged at the bottom of the support plate, a positioning block is fixedly installed on the right side of the support plate, a vertical plate is arranged on the right side of the support plate, a positioning groove is provided on the right side of the vertical plate, a threaded hole two is provided inside the positioning groove, and a bolt two is threadedly connected at the bottom of the vertical plate;

[0006] The valve flap assembly comprises a rotating shaft 1, a bearing 1, a bearing 2, a mounting plate, a guide groove 1, a vertical valve flap plate, a guide block 1, a threaded hole 1, a bolt 1, a guide groove 2, a rubber pad, a guide block 2, a groove 1 and a flexible magnetic strip, wherein the first exhaust duct is rotatably mounted on the inside of the first exhaust duct, the outer side of the rotating shaft 1 is rotatably mounted with bearings 1 and bearing 2, the outer side of the rotating shaft 1 is mounted with a mounting plate, the side of the mounting plate away from the rotating shaft 1 is provided with a guide groove 1, the side of the mounting plate away from the rotating shaft 1 is provided with a vertical valve flap plate, the side of the vertical valve flap plate close to the rotating shaft 1 is fixedly mounted with a guide block 1, the inner side of the guide groove 1 is provided with a threaded hole 1, the front side of the mounting plate is threadedly connected with a bolt 1, the side of the vertical valve flap plate away from the rotating shaft 1 is provided with a guide groove 2, the side of the vertical valve flap plate away from the rotating shaft 1 is provided with a rubber pad, the side of the rubber pad close to the rotating shaft 1 is fixedly mounted with a guide block 2, the top of the rubber pad is provided with a groove 1, and the inside of the groove 1 is provided with a flexible magnetic strip;

[0007] The valve flap drive assembly includes a gear box, a motor cover, a servo motor, a rotating shaft 2, gear one and gear two. The gear box is fixedly installed on the top of the first exhaust duct, the motor cover is fixedly installed on the top of the gear box, the servo motor is fixedly installed on the top of the gear box, the rotating shaft 2 is fixedly installed on the output shaft of the servo motor, the outer side of the rotating shaft 2 is fixedly installed with gear one, and the outer side of the rotating shaft 1 is fixedly installed with gear two.

[0008] Preferably, the vertical valve flap plate and the mounting plate are installed by plugging together through a guide block 1 and a guide groove 1, the bolt 1 penetrates through a guide block 1 and extends to an interior of a threaded hole 1, and the rubber pad and the vertical valve flap plate are installed by plugging together through a guide block 2 and a guide groove 2.

[0009] Through the above technical solution, through the design of guide block one and guide groove one, the vertical valve flap plate is easier to disassemble and install, which is convenient for subsequent maintenance and repair. Bolt one plays a fixing role on the vertical valve flap plate. Through the design of guide block two and guide groove two, the rubber pad is easier to disassemble and install, avoiding wear of the rubber pad after long-term use, which affects the air tightness of the air valve.

[0010] Preferably, the valve flap assemblies are provided in two groups with the same specifications, and the two groups of valve flap assemblies are symmetrically distributed about the center line of the first exhaust duct.

[0011] Through the above technical solution, the two groups of valve flap assemblies are connected by flexible magnetic strips. When the two groups of valve flap assemblies are close to each other, the two flexible magnetic strips attract each other, making the two groups of valve flap assemblies in closer contact, thereby improving the air tightness of the air valve.

[0012] Preferably, gear one is meshingly connected with gear two, two gears of the same specification are provided, the two gears two are symmetrically distributed about the center line of gear one, the number of teeth of gear one is twice the number of teeth of gear two, and the center lines of the gear box, motor cover, servo motor, rotating shaft two and gear one are located on the same vertical line.

[0013] Through the above technical solution, the servo motor is matched with the rotating shaft 2, the rotating shaft 2 drives the gear 1 to rotate, the gear 1 drives the gear 2 to rotate, and the gear 2 drives the valve flap assembly to rotate, so as to control the air volume. Through the design of gear 1 and gear 2, the rotation angle of the valve flap assembly can be accurately controlled, so as to accurately control the air volume, and realize high-precision adjustment of the air valve.

[0014] Preferably, the grille frame and the mounting frame are installed by plugging and connecting blocks and connecting grooves, and a plurality of grille blades of the same specification are provided, and the plurality of grille blades are evenly distributed inside the grille frame, and the grille blades are at 45° to the top end of the inner side of the grille frame.

[0015] Through the above technical solution, through the design of the docking block and the docking groove, the grille frame is easier to disassemble and install, which is convenient for subsequent maintenance and repair, and the grille blades play a noise reduction role.

[0016] Preferably, two air filters of the same specification are provided, the two air filters are symmetrically distributed about the center line of the support plate, and the center lines of the mounting seat, the air filter and the second groove are located on the same vertical line.

[0017] Through the above technical solution, air enters the air filter through groove two, so that the dust in the air is blocked by the air filter and falls into groove two, and then falls to the bottom of the second exhaust duct, thereby avoiding dust accumulation inside the first exhaust duct, causing the air valve to fail to work normally, and playing a role in filtering and dust removal.

[0018] Preferably, the cross section of the support plate is in an "L"-shaped structure, the vertical plate and the support plate are plug-connected and installed through a positioning block and a positioning groove, and the second bolt penetrates the positioning block and extends to the inside of the second threaded hole.

[0019] Through the above technical solution, after long-term use, the vertical plate can be removed and the air filter can be replaced. The design of the positioning block and the positioning groove facilitates the removal and installation of the vertical plate, and the bolt 2 fixes the vertical plate.

[0020] Compared with the prior art, the utility model provides a damper with a valve flap control mechanism, which has the following beneficial effects:

[0021] 1. The air valve with the valve flap control mechanism cooperates with the rotating shaft 2 through the servo motor, the rotating shaft 2 drives the gear 1 to rotate, the gear 1 drives the gear 2 to rotate, and the gear 2 drives the valve flap assembly to rotate, thereby controlling the air volume. Through the design of the gear 1 and the gear 2, the rotation angle of the valve flap assembly can be accurately controlled, thereby accurately controlling the air volume, and realizing high-precision adjustment of the air valve;

[0022] 2. The air valve with a valve flap control mechanism has two sets of valve flap assemblies connected by a flexible magnetic strip, which is inserted into the interior of the rubber pad through a groove. When the two sets of valve flap assemblies are close to each other, the two flexible magnetic strips attract each other, making the two sets of valve flap assemblies contact more closely, thereby improving the air tightness of the air valve;

[0023] 3. The air valve with a valve flap control mechanism allows air to enter the air filter through groove 2, so that dust in the air is blocked by the air filter and falls into groove 2, and then falls to the bottom of the second exhaust duct, thereby avoiding dust accumulation inside the first exhaust duct, which would cause the air valve to fail to work properly, and playing a role in filtering and dust removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0025] Figure 2 The installation structure of the valve disc drive assembly of the utility model is shown in FIG. Figure 1 ;

[0026] Figure 3 This is a schematic diagram of the half-section structure of the utility model;

[0027] Figure 4 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0028] Figure 5 This is a schematic diagram of the installation structure of the air filter of the utility model;

[0029] Figure 6 This is a schematic diagram of the grille blade installation structure of the utility model;

[0030] Figure 7 The installation structure of the valve disc drive assembly of the utility model is shown in FIG. Figure 2 ;

[0031] Figure 8 The utility model valve disc assembly installation structure diagram Figure 1 ;

[0032] Fig. 9 This is a partial enlarged structural diagram of the utility model. Figure 1 ;

[0033] Fig.10 The utility model valve disc assembly installation structure diagram Figure 2 ;

[0034] Fig.11 This is a partial enlarged structural diagram of the utility model. Figure 2 .

[0035] Among them: 1. First exhaust duct; 2. Second exhaust duct; 3. Valve flap assembly; 301. Rotating shaft 1; 302. Bearing 1; 303. Bearing 2; 304. Mounting plate; 305. Guide groove 1; 306. Vertical valve flap plate; 307. Guide block 1; 308. Threaded hole 1; 309. Bolt 1; 310. Guide groove 2; 311. Rubber pad; 312. Guide block 2; 313. Groove 1; 314. Flexible magnetic strip; 4. Valve Flap drive assembly; 401, gear box; 402, motor cover; 403, servo motor; 404, shaft two; 405, gear one; 406, gear two; 5, mounting frame; 6, docking groove; 7, grille frame; 8, grille blades; 9, docking block; 10, support plate; 11, mounting seat; 12, air filter; 13, groove two; 14, positioning block; 15, vertical plate; 16, positioning groove; 17, threaded hole two; 18, bolt two. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] Embodiment 1: Figure 1-11As shown, the utility model provides a damper with a valve flap control mechanism, comprising a first exhaust duct 1, a second exhaust duct 2 is arranged at the rear side of the first exhaust duct 1, a valve flap assembly 3 is arranged inside the first exhaust duct 1, a valve flap driving assembly 4 is arranged on the top of the first exhaust duct 1, a mounting frame 5 is fixedly installed on the front side of the first exhaust duct 1, a docking groove 6 is opened on the left and right sides of the interior of the mounting frame 5, a grille frame 7 is arranged inside the mounting frame 5, grille blades 8 are fixedly installed inside the grille frame 7, and the left and right sides of the grille frame 7 are fixed A docking block 9 is fixedly installed, a support plate 10 is fixedly installed inside the second exhaust duct 2, a mounting seat 11 is fixedly installed on the top of the support plate 10, an air filter 12 is fixedly installed on the top of the mounting seat 11, a groove 13 is provided at the bottom of the support plate 10, a positioning block 14 is fixedly installed on the right side of the support plate 10, a vertical plate 15 is provided on the right side of the support plate 10, a positioning groove 16 is provided on the right side of the vertical plate 15, a threaded hole 17 is provided inside the positioning groove 16, and a bolt 18 is threadedly connected to the bottom of the vertical plate 15;

[0038] The valve flap assembly 3 includes a rotating shaft 301, a bearing 302, a bearing 303, a mounting plate 304, a guide groove 305, a vertical valve flap plate 306, a guide block 307, a threaded hole 308, a bolt 309, a guide groove 310, a rubber pad 311, a guide block 312, a groove 313 and a flexible magnetic strip 314. The rotating shaft 301 is rotatably mounted inside the first exhaust duct 1, the bearing 302 and the bearing 303 are rotatably mounted outside the rotating shaft 301, the mounting plate 304 is mounted outside the rotating shaft 301, the guide groove 305 is opened on the side of the mounting plate 304 away from the rotating shaft 301, and the mounting plate 304 is away from the rotating shaft A vertical valve flap plate 306 is provided on one side of the first 301, a guide block 307 is fixedly installed on the side of the vertical valve flap plate 306 close to the rotating shaft 301, a threaded hole 308 is provided on the inner side of the guide groove 305, a bolt 309 is threadedly connected to the front side of the mounting plate 304, a guide groove 2 310 is provided on the side of the vertical valve flap plate 306 away from the rotating shaft 301, a rubber pad 311 is provided on the side of the vertical valve flap plate 306 away from the rotating shaft 301, a guide block 2 312 is fixedly installed on the side of the rubber pad 311 close to the rotating shaft 301, a groove 313 is provided on the top of the rubber pad 311, and a flexible magnetic strip 314 is provided inside the groove 313;

[0039] The valve flap drive assembly 4 includes a gear box 401, a motor cover 402, a servo motor 403, a rotating shaft 404, a gear one 405 and a gear two 406. The gear box 401 is fixedly installed on the top of the first exhaust duct 1, the motor cover 402 is fixedly installed on the top of the gear box 401, the servo motor 403 is fixedly installed on the top of the gear box 401, the rotating shaft 404 is fixedly installed on the output shaft of the servo motor 403, the gear one 405 is fixedly installed on the outer side of the rotating shaft 404, and the gear two 406 is fixedly installed on the outer side of the rotating shaft 301.

[0040] Specifically, the vertical valve flap plate 306 is plugged and installed with the mounting plate 304 through the guide block 1 307 and the guide groove 1 305, the bolt 1 309 penetrates the guide block 1 307 and extends to the inside of the threaded hole 1 308, and the rubber pad 311 is plugged and installed with the vertical valve flap plate 306 through the guide block 2 312 and the guide groove 2 310. The advantage is that the design of the guide block 1 307 and the guide groove 1 305 makes it easier to disassemble and install the vertical valve flap plate 306, which is convenient for subsequent maintenance and repair. The bolt 1 309 plays a fixing role on the vertical valve flap plate 306. The design of the guide block 2 312 and the guide groove 2 310 makes it easier to disassemble and install the rubber pad 311, which avoids the wear of the rubber pad 311 after long-term use, thereby affecting the air tightness of the air valve.

[0041] Specifically, two groups of valve flap assemblies 3 of the same specification are provided, and the two groups of valve flap assemblies 3 are symmetrically distributed about the center line of the first exhaust duct 1. The advantage is that the two groups of valve flap assemblies 3 are connected by the flexible magnetic strips 314. When the two groups of valve flap assemblies 3 are close to each other, the two flexible magnetic strips 314 attract each other, so that the two groups of valve flap assemblies 3 are in closer contact, thereby improving the air tightness of the air valve.

[0042] Specifically, the gear 1 405 is meshed with the gear 2 406, and the gear 2 406 is provided with two gears of the same specification, and the two gears 2 406 are symmetrically distributed about the center line of the gear 1 405, and the number of teeth of the gear 1 405 is twice the number of teeth of the gear 2 406, and the center lines of the gear box 401, the motor cover 402, the servo motor 403, the rotating shaft 2 404 and the gear 1 405 are located on the same vertical line. The advantage is that the servo motor 403 is matched with the rotating shaft 2 404, the rotating shaft 2 404 drives the gear 1 405 to rotate, the gear 1 405 drives the gear 2 406 to rotate, and the gear 2 406 drives the valve flap assembly 3 to rotate, thereby controlling the air volume, and through the design of the gear 1 405 and the gear 2 406, the rotation angle of the valve flap assembly 3 can be accurately controlled, thereby accurately controlling the air volume, and realizing high-precision adjustment of the air valve.

[0043] Embodiment 2: Figure 2-11 As shown, as an improvement to the previous embodiment.

[0044] Specifically, the grille frame 7 and the installation frame 5 are plugged and installed through the docking block 9 and the docking groove 6, and a plurality of grille blades 8 of the same specification are provided, and the plurality of grille blades 8 are evenly distributed inside the grille frame 7, and the grille blades 8 are at a 45° angle to the top end of the inner side of the grille frame 7. The advantage is that the grille frame 7 is easier to disassemble and install through the design of the docking block 9 and the docking groove 6, which is convenient for subsequent maintenance and repair, and the grille blades 8 play a role in noise reduction.

[0045] Specifically, two air filters 12 of the same specification are provided, and the two air filters 12 are symmetrically distributed about the center line of the support plate 10, and the center lines of the mounting seat 11, the air filter 12 and the second groove 13 are located on the same vertical line. The advantage is that the air enters the air filter 12 through the second groove 13, so that the dust in the air is blocked by the air filter 12, falls into the second groove 13, and then falls to the bottom of the second exhaust pipe 2, avoiding the accumulation of dust inside the first exhaust pipe 1, causing the air valve to fail to work normally, and playing a role in filtering and dust removal.

[0046] Specifically, the cross section of the support plate 10 is an "L"-shaped structure, the vertical plate 15 and the support plate 10 are plugged and installed through the positioning block 14 and the positioning groove 16, and the second bolt 18 penetrates the positioning block 14 and extends to the inside of the second threaded hole 17. The advantage is that after a long period of use, the vertical plate 15 can be removed and the air filter 12 can be replaced. The design of the positioning block 14 and the positioning groove 16 facilitates the removal and installation of the vertical plate 15, and the second bolt 18 plays a role in fixing the vertical plate 15.

[0047] Working principle: During installation, the vertical valve flap plate 306 is plugged and installed with the mounting plate 304 through the guide block 1 307 and the guide groove 1 305, and the vertical valve flap plate 306 is fixed by the bolt 1 309. The vertical plate 15 and the support plate 10 are plugged and installed through the positioning block 14 and the positioning groove 16, and the vertical plate 15 is fixed by the bolt 2 18. During use, the wind enters the second exhaust duct 2, and the wind enters the air filter 12 through the groove 2 13, so that the dust in the wind is blocked by the air filter 12, falls into the groove 2 13, and then falls to the bottom end inside the second exhaust duct 2, avoiding the accumulation of dust inside the first exhaust duct 1, which causes the air valve to fail to work normally, and plays a role in filtering and dust removal. Subsequently, the filtered wind enters the first exhaust duct 1, Turn on the servo motor 403, the servo motor 403 cooperates with the rotating shaft 2 404, the rotating shaft 2 404 drives the gear 1 405 to rotate, the gear 1 405 drives the gear 2 406 to rotate, and the gear 2 406 drives the valve flap assembly 3 to rotate, so as to control the air volume. Subsequently, the wind is discharged through the grille blades 8, and the grille blades 8 play a role in noise reduction. When the two groups of valve flap assemblies 3 are close to each other, the two flexible magnetic strips 314 attract each other, so that the two groups of valve flap assemblies 3 are in closer contact, thereby improving the air tightness of the air valve. After long-term use, the vertical plate 15 is removed and the air filter 12 can be replaced. At the same time, the rubber pad 311 is worn, affecting the air tightness of the air valve. The rubber pad 311 is removed through the guide block 2 312 and the rubber pad 311 is replaced.

[0048] Although the 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. A damper with a valve flap control mechanism, comprising a first exhaust duct (1), characterized in that: A second exhaust duct (2) is arranged at the rear side of the first exhaust duct (1), a valve flap assembly (3) is arranged inside the first exhaust duct (1), a valve flap driving assembly (4) is arranged at the top of the first exhaust duct (1), a mounting frame (5) is fixedly installed at the front side of the first exhaust duct (1), docking grooves (6) are provided on both left and right sides of the interior of the mounting frame (5), a grille frame (7) is arranged inside the mounting frame (5), grille blades (8) are fixedly installed inside the grille frame (7), docking blocks (9) are fixedly installed on both left and right sides of the grille frame (7), and the second exhaust duct (2) is fixedly installed at the front side of the first exhaust duct (1). A support plate (10) is fixedly installed inside, a mounting seat (11) is fixedly installed on the top of the support plate (10), an air filter (12) is fixedly installed on the top of the mounting seat (11), a groove (13) is provided at the bottom of the support plate (10), a positioning block (14) is fixedly installed on the right side of the support plate (10), a vertical plate (15) is arranged on the right side of the support plate (10), a positioning groove (16) is provided on the right side of the vertical plate (15), a threaded hole (17) is provided inside the positioning groove (16), and a bolt (18) is threadedly connected to the bottom of the vertical plate (15); The valve flap assembly (3) comprises a rotating shaft (301), a bearing (302), a bearing (303), a mounting plate (304), a guide groove (305), a vertical valve flap plate (306), a guide block (307), a threaded hole (308), a bolt (309), a guide groove (310), a rubber pad (311), a guide block (312), a groove (313) and a flexible magnetic strip (314); the rotating shaft (301) is rotatably mounted inside the first exhaust duct (1); the bearing (302) and the bearing (303) are rotatably mounted outside the rotating shaft (301); the mounting plate (304) is mounted outside the rotating shaft (301); a guide groove (305) is provided on a side of the mounting plate (304) away from the rotating shaft (301); the mounting plate (304) is away from the rotating shaft (301). A vertical valve flap plate (306) is provided on one side of the rotating shaft (301); a guide block (307) is fixedly installed on the side of the vertical valve flap plate (306) close to the rotating shaft (301); a threaded hole (308) is provided on the inner side of the guide groove (305); a bolt (309) is threadedly connected to the front side of the mounting plate (304); a guide groove (310) is provided on the side of the vertical valve flap plate (306) away from the rotating shaft (301); a rubber pad (311) is provided on the side of the vertical valve flap plate (306) away from the rotating shaft (301); a guide block (312) is fixedly installed on the side of the rubber pad (311) close to the rotating shaft (301); a groove (313) is provided on the top of the rubber pad (311); a flexible magnetic strip (314) is provided inside the groove (313); The valve flap driving assembly (4) comprises a gear box (401), a motor cover (402), a servo motor (403), a rotating shaft 2 (404), a gear 1 (405) and a gear 2 (406); the gear box (401) is fixedly mounted on the top of the first exhaust duct (1); the motor cover (402) is fixedly mounted on the top of the gear box (401); the servo motor (403) is fixedly mounted on the top of the gear box (401); the rotating shaft 2 (404) is fixedly mounted on the output shaft of the servo motor (403); the gear 1 (405) is fixedly mounted on the outer side of the rotating shaft 2 (404); and the gear 2 (406) is fixedly mounted on the outer side of the rotating shaft 1 (301).

2. The air valve with a valve flap control mechanism according to claim 1, characterized in that: The vertical valve flap plate (306) and the mounting plate (304) are installed by plugging together through a guide block 1 (307) and a guide groove 1 (305); the bolt 1 (309) penetrates the guide block 1 (307) and extends to the inside of the threaded hole 1 (308); the rubber pad (311) and the vertical valve flap plate (306) are installed by plugging together through a guide block 2 (312) and a guide groove 2 (310).

3. The air valve with a valve flap control mechanism according to claim 2, characterized in that: The valve flap assemblies (3) are provided in two groups with the same specifications, and the two groups of valve flap assemblies (3) are symmetrically distributed about the center line of the first exhaust pipe (1).

4. The air valve with a valve flap control mechanism according to claim 3, characterized in that: The gear one (405) is meshingly connected with the gear two (406), and the gear two (406) is provided with two gears of the same specification. The two gears (406) are symmetrically distributed about the center line of the gear one (405), and the number of teeth of the gear one (405) is twice the number of teeth of the gear two (406). The center lines of the gear box (401), the motor cover (402), the servo motor (403), the rotating shaft two (404) and the gear one (405) are located on the same vertical line.

5. The air valve with a valve flap control mechanism according to claim 4, characterized in that: The grille frame (7) and the mounting frame (5) are plugged and installed via a docking block (9) and a docking groove (6); a plurality of grille blades (8) of the same specification are provided; the plurality of grille blades (8) are evenly distributed inside the grille frame (7); and the grille blades (8) are at an angle of 45 degrees to the top ends of the inner sides of the grille frame (7).

6. The air valve with a valve flap control mechanism according to claim 5, characterized in that: The air filters (12) are provided with two of the same specifications, the two air filters (12) are symmetrically distributed about the center line of the support plate (10), and the center lines of the mounting seat (11), the air filter (12) and the second groove (13) are located on the same vertical line.

7. The air valve with a valve flap control mechanism according to claim 6, characterized in that: The cross section of the support plate (10) is in an "L"-shaped structure; the vertical plate (15) and the support plate (10) are plugged and installed via a positioning block (14) and a positioning groove (16); and the second bolt (18) penetrates the positioning block (14) and extends to the interior of the second threaded hole (17).

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