A control method for a contra-rotating adjustable-blade axial flow fan

Abstract

The application discloses a control method of a contra-rotating adjustable axial-flow fan with movable blades, and is applied to the technical field of the contra-rotating adjustable axial-flow fan with movable blades. The adjusting mechanism and the adjusting system are arranged, the transmission assembly can be electrified and started to drive the driving assembly, the changing assembly and the limiting assembly to rotate, the driving assembly can be electrified and started to drive the changing assembly to rotate, so that the changing assembly can change the angle of the air feeding assembly, the changing assembly can change the angle of the air feeding assembly in cooperation with the limiting assembly, the limiting assembly can drive the air feeding assembly to rotate, and the air feeding assembly can change the power of wind power transmission according to the changed angle.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of counter-rotating adjustable blade axial flow fans, and particularly relates to a control method of a counter-rotating adjustable blade axial flow fan. BACKGROUND

[0002] The counter-rotating adjustable blade axial flow fan is composed of two fan units with the same structure in series in the axial direction, and each fan unit has a separate impeller driving motor and a blade angle adjusting mechanism. Due to the advantages of large air volume, high air pressure and wide performance adjustment range, the counter-rotating adjustable blade axial flow fan is widely used in coal mines, subways, buildings and other fields.

[0003] At present, the control method of the counter-rotating adjustable blade axial flow fan including a first fan unit and a second fan unit is disclosed in CN107313968B, which comprises: obtaining a first function between the fan optimization target performance and the fan working state parameters; obtaining a second function between the fan comprehensive performance and the fan comprehensive state parameters; obtaining the fan actual comprehensive state under the working condition according to the fan actual working state parameters under the working condition and the second function, judging whether the fan actual comprehensive state meets the actual demand, if the fan actual comprehensive state does not meet the actual demand, adjusting the fan actual working state parameters until the fan actual comprehensive state meets the actual working condition demand; obtaining the fan actual performance according to the final fan actual fan working state parameters and the first function, judging whether the fan actual performance meets the fan optimal performance state, if the fan actual performance does not meet the fan optimal performance state, adjusting the fan actual working state parameters until the fan actual performance meets the fan optimal performance state.

[0004] The existing control method of the counter-rotating adjustable blade axial flow fan has the following disadvantages when in use:

[0005] 1. Lack of fan adjusting structure, unable to change the wind power under the same power;

[0006] 2. Unable to change the power consumption in real time according to the angle of the fan, increasing the consumption of electric energy. SUMMARY

[0007] The present application aims at the existing control method of the counter-rotating adjustable blade axial flow fan, which has the following advantages:

[0008] 1. Having a fan adjusting structure, the wind power can be changed under the same power;

[0009] 2. The angle of the fan can be changed in real time, reducing the consumption of electric energy.

[0010] The technical problem of the present application is solved by the following technical scheme: a contra-rotating type adjustable axial flow fan, comprising a detection mechanism, an adjusting mechanism and an adjusting system, the adjusting mechanism is bolted on the inner side of the detection mechanism, the detection mechanism comprises a positioning assembly and a test assembly, the test assembly is bolted on the top of the inner side of the positioning assembly, the adjusting mechanism comprises a transmission assembly, a driving assembly, a changing assembly, a limiting assembly and a gas feeding assembly, the transmission assembly is bolted on the inner side of the positioning assembly, the driving assembly is movably connected on the front side of the transmission assembly, the surface of the driving assembly is in meshing connection with the surface of the transmission assembly, the changing assembly is bolted on the front side of the transmission assembly, the limiting assembly is bolted on the output end of the front side of the transmission assembly, the inner side of the limiting assembly is movably connected with the changing assembly, the gas feeding assembly is movably connected on the surface of the limiting assembly, and the side close to the changing assembly of the gas feeding assembly is in contact with the changing assembly.

[0011] By adopting the above technical scheme, the detection mechanism can detect the wind force, the adjusting mechanism can change the air flow power in real time, and the adjusting system can control the detection mechanism and the adjusting mechanism.

[0012] The present application further provides that: the positioning assembly comprises a ventilation pipe, a protective net and a control panel, the protective net is bolted on the front side and the rear side of the inner side of the ventilation pipe, and the control panel is bolted on the right side of the ventilation pipe.

[0013] By adopting the above technical scheme, the positioning assembly can support and limit the test assembly and the adjusting mechanism, guide the flowing air, protect the internal structure of the ventilation pipe, and facilitate the user to control the adjusting system.

[0014] The present application further provides that: the test assembly comprises a support rod, a wind meter and a wind fan, the support rod is bolted on the top of the inner side of the ventilation pipe, the wind meter is bolted on the bottom of the support rod, and the wind fan is bolted on the rear side of the wind meter.

[0015] By adopting the above technical scheme, the test assembly can support and limit the wind meter, the wind fan can rotate with the flowing air, the rotating speed is determined by the wind force, and the wind meter can transmit the rotating speed information of the wind fan to the adjusting system for analysis and processing by the adjusting system.

[0016] The present application further provides that: the transmission assembly comprises a servo motor, a driving gear ring and a connecting shaft, the servo motor is bolted on the inner side of the ventilation pipe, the driving gear ring is rotatably connected on the front side of the servo motor, the connecting shaft is bolted on the output end of the front side of the servo motor, and the inner side of the driving gear ring is in contact with the surface of the connecting shaft.

[0017] By adopting the above technical solution and setting up a transmission component, the servo motor can convert electrical energy into rotational mechanical energy after being powered on and started, and then transmit the rotational mechanical energy to the connecting shaft, so that the connecting shaft drives the limit component to rotate. The active gear ring can rotate along with the drive component, thereby driving the change component to rotate.

[0018] The present invention is further configured such that: the driving component includes a drive motor, a connecting circular plate and a driving gear, the drive motor is rotatably connected to the front side of the servo motor, the connecting circular plate is bolted to the output end of the front side of the drive motor, the driving gear is bolted to the surface of the connecting circular plate, and the surface of the driving gear meshes with the surface of the drive gear ring.

[0019] By adopting the above technical solution and setting up a drive component, the transmission motor can rotate the connecting circular plate after being powered on and started. The connecting circular plate can drive the drive gear to rotate, and the drive gear can drive the drive gear ring to rotate.

[0020] The present invention is further configured such that: the changing component includes a driving arc plate, a displacement arc groove and a bevel opening, the driving arc plate is bolted to the front side of the driving gear ring, the displacement arc groove is formed on the surface of the driving arc plate, and the bevel opening is formed on the front side of the driving arc plate.

[0021] By adopting the above technical solution, by setting and changing the components, the arc plate can drive the displacement arc groove to rotate, and the displacement arc groove can drive the air supply component to move, thereby facilitating the change of the angle of the air supply component. The inclined opening can drive the arc plate to become a triangle, and the triangle has structural stability.

[0022] The present invention is further configured such that: the limiting component includes a connecting shaft, a limiting circular frame, and a driving arc groove; the connecting shaft is bolted to the front side of the connecting rotating shaft; the limiting circular frame is bolted to the front side of the connecting shaft; the inner side of the limiting circular frame is in contact with the surface of the driving arc plate; the driving arc groove is formed on the surface of the limiting circular frame; and the side of the driving arc groove closest to the displacement arc groove is in contact with the displacement arc groove.

[0023] By adopting the above technical solution, by setting a limiting component, the connecting shaft can support and limit the limiting circle frame, and can rotate the limiting circle frame with the transmission component, so that the air supply component can drive the air, causing the arc groove to contact the displacement arc groove in an X shape. Therefore, the position of the connecting rod can be changed when the displacement arc groove moves.

[0024] The air sending assembly comprises a connecting rotating rod, an adjusting fan blade and a changing sliding rod, the connecting rotating rod is rotationally connected to the surface of the limiting circular frame, the adjusting fan blade is bolted on the side of the connecting rotating rod away from the limiting circular frame, the side of the adjusting fan blade close to the limiting circular frame is in contact with the limiting circular frame, the changing sliding rod is bolted on the side of the adjusting fan blade close to the driving arc groove, the surface of the changing sliding rod is in sliding connection with the driving arc groove, and the side of the changing sliding rod close to the displacement arc groove is in sliding connection with the displacement arc groove.

[0025] By adopting the above technical scheme, the connecting rotating rod can support the rotation of the adjusting fan blade, the adjusting fan blade can send air, and the changing sliding rod can change the angle of the adjusting fan blade, so that the power consumed by the adjusting fan blade when sending air can be changed.

[0026] The adjusting system comprises a control hub, a wind measuring module, an adjusting module and a power supply module, the control hub is bidirectionally electrically connected with the wind measuring module, the control hub is bidirectionally electrically connected with the adjusting module, and the adjusting system is unidirectionally electrically connected with the power supply module.

[0027] By adopting the above technical scheme, the control hub is a control panel, the wind measuring module is a testing assembly, the adjusting module is an adjusting mechanism, and the power supply module is a municipal power supply.

[0028] A control method of a contra-rotating type adjustable blade axial flow fan, comprising the following steps:

[0029] S1. Wind speed control: first, the detection mechanism is powered on and started, the user controls the control panel, the adjusting system can control the detection mechanism and the adjusting mechanism, the adjusting mechanism is started, the ventilation pipe is transported by the operation of the adjusting mechanism, the air passes through the wind measuring fan, the wind measuring fan rotates with the flowing air, and the rotating mechanical energy is transmitted to the wind measuring instrument, the wind measuring instrument detects the rotating mechanical energy, and transmits the detected information to the control panel, the user can control the control panel to change the power of the air transportation in the adjusting mechanism, until the control of the detection mechanism and the adjusting mechanism is completed.

[0030] S2. Fan blade adjustment: first, the adjustment mechanism and the adjustment system are powered on and started, the user can control the adjustment system, the control center can analyze and process the information transmitted by the wind measurement module, and then transmit the processed information to the adjustment module, the adjustment module can change the wind power delivery power of the adjustment mechanism in real time according to the information content, when the wind power delivery power needs to be increased, the servo motor can speed up the speed of the connecting shaft, the transmission motor can drive the gear to rotate, the driven gear can drive the driven gear to rotate, the driven gear can drive the driven arc plate to rotate, the driven arc plate on the displacement arc groove and the driven arc groove on the limiting circular frame will drive the change of the sliding rod to move, so as to push the change of the sliding rod forward, the change of the sliding rod will drive the adjustment fan blade to rotate around the connecting shaft, so as to change the angle of the adjustment fan blade, until the required angle.

[0031] In summary, the present application has the following advantages:

[0032] 1. By setting the detection mechanism, the positioning assembly can control the adjustment system, and can guide the air blown by the adjustment mechanism, the test assembly can detect the flow air speed guided by the positioning assembly in real time, and transmit the detected information data to the adjustment system, so that the user can change the power of the air delivery of the adjustment mechanism in real time.

[0033] 2. By setting the adjustment mechanism and the adjustment system, the transmission assembly can drive the driven assembly, the change assembly and the limiting assembly to rotate after being powered on and started, the driven assembly can drive the change assembly to rotate after being powered on and started, so as to facilitate the change assembly to change the angle of the air supply assembly, the change assembly can change the angle of the air supply assembly in cooperation with the limiting assembly, the limiting assembly can drive the air supply assembly to rotate, and the air supply assembly can change the power of the wind power delivery according to the changed angle. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is the overall structure schematic diagram of the present application;

[0035] Figure 2 It is the detection mechanism structure schematic diagram of the present application;

[0036] Figure 3 It is the limiting assembly structure schematic diagram of the present application;

[0037] Figure 4 It is the test assembly structure schematic diagram of the present application;

[0038] Figure 5 It is the adjustment mechanism structure schematic diagram of the present application;

[0039] Figure 6 It is the transmission assembly structure schematic diagram of the present application;

[0040] Figure 7 This is a schematic diagram of the drive component structure of the present invention;

[0041] Figure 8 This is a schematic diagram of the modified component structure of the present invention;

[0042] Figure 9 This is a schematic diagram of the limiting component structure of the present invention;

[0043] Figure 10 This is a schematic diagram of the air delivery component structure of the present invention;

[0044] Figure 11 This is a diagram of the adjustment system of the present invention;

[0045] Figure 12 This is a diagram of the control method of the present invention.

[0046] Reference numerals: 1. Detection mechanism; 101. Positioning component; 1011. Ventilation duct; 1012. Protective net; 1013. Control panel; 102. Testing component; 1021. Support rod; 1022. Anemometer; 1023. Fan; 2. Adjustment mechanism; 201. Transmission component; 2011. Servo motor; 2012. Drive gear ring; 2013. Connecting shaft; 202. Drive component; 2021. Transmission motor; 2022. Connecting circular plate; 2023. 1. Drive gear; 203. Change component; 2031. Drive arc plate; 2032. Displacement arc groove; 2033. Inclined opening; 204. Limit component; 2041. Connecting shaft; 2042. Limiting circular frame; 2043. Drive arc groove; 205. Air supply component; 2051. Connecting rotating rod; 2052. Adjusting fan blade; 2053. Change slide bar; 3. Adjustment system; 301. Control center; 302. Wind measurement module; 303. Adjustment module; 304. Power supply module. Detailed Implementation

[0047] The present invention will be further described in detail below with reference to the accompanying drawings.

[0048] Example 1:

[0049] refer to Figures 1-4 A counter-rotating adjustable axial flow fan includes a detection mechanism 1. The detection mechanism 1 includes a positioning component 101 and a testing component 102. The testing component 102 is bolted to the top of the inner side of the positioning component 101. By setting the detection mechanism 1, the positioning component 101 can control the adjustment system 3 and guide the air blown by the adjustment mechanism 2. The testing component 102 can detect the wind speed of the flowing air guided by the positioning component 101 in real time and transmit the detected information data to the adjustment system 3 so that the user can change the power of the adjustment mechanism 2 to deliver air in real time.

[0050] As Figure 3 shown, the positioning assembly 101 includes a ventilation pipe 1011, a protective net 1012 and a control panel 1013, the protective net 1012 is bolted on the front side and the back side of the inner side of the ventilation pipe 1011, and the control panel 1013 is bolted on the right side of the ventilation pipe 1011. By arranging the positioning assembly 101, the ventilation pipe 1011 can support and limit the test assembly 102 and the adjusting mechanism 2, and guide the flowing air. The protective net 1012 can protect the internal structure of the ventilation pipe 1011. The control panel 1013 can facilitate the user to control the adjusting system 3.

[0051] As Figure 4 shown, the test assembly 102 includes a support rod 1021, an anemograph 1022 and an anemometer fan 1023. The support rod 1021 is bolted on the top of the inner side of the ventilation pipe 1011. The anemograph 1022 is bolted on the bottom of the support rod 1021. The anemometer fan 1023 is bolted on the back side of the anemograph 1022. By arranging the test assembly 102, the support rod 1021 can support and limit the anemograph 1022. The anemometer fan 1023 can rotate with the flowing air. The rotating speed is determined by the wind power. The anemograph 1022 can transmit the rotating speed information of the anemometer fan 1023 to the adjusting system 3, so that the adjusting system 3 can analyze and process.

[0052] The use process is briefly described as follows: first, the detection mechanism 1 is powered on and started. The user controls the control panel 1013 to control the adjusting system 3. The adjusting system 3 can control the detection mechanism 1 and the adjusting mechanism 2. The adjusting mechanism 2 is started. The ventilation pipe 1011 is transported by the operation of the adjusting mechanism 2. When the air passes through the anemometer fan 1023, the anemometer fan 1023 rotates with the flowing air and transmits the rotating mechanical energy to the anemograph 1022. The anemograph 1022 can detect the rotating mechanical energy and transmit the detected information to the control panel 1013. The user can control the control panel 1013 to change the power of air transportation in the adjusting mechanism 2 until the control of the detection mechanism 1 and the adjusting mechanism 2 is completed.

[0053] Embodiment 2:

[0054] Reference Figures 5-11A kind of counter-rotating type adjustable axial flow fan of moving vane, including adjustment mechanism 2 and adjusting system 3, adjustment mechanism 2 is bolted in the inner side of detection mechanism 1, adjustment mechanism 2 includes transmission assembly 201, driving assembly 202, change assembly 203, limiting assembly 204 and gas supply assembly 205, transmission assembly 201 is bolted in the inner side of positioning assembly 101, driving assembly 202 is movably connected at the front side of transmission assembly 201, the surface of driving assembly 202 is engagedly connected with the surface of transmission assembly 201, change assembly 203 is bolted at the front side of transmission assembly 201, limiting assembly 204 is bolted at the output end of the front side of transmission assembly 201, the inner side of limiting assembly 204 is movably connected with change assembly 203, gas supply assembly 205 is movably connected at the surface of limiting assembly 204, the side of gas supply assembly 205 close to change assembly 203 is in contact with change assembly 203, by setting adjustment mechanism 2 and adjusting system 3, transmission assembly 201 can be electrified and start after driving driving assembly 202, change assembly 203 and limiting assembly 204 are rotated, driving assembly 202 can drive change assembly 203 to rotate after electrification and start, so as to facilitate change assembly 203 to change the angle of gas supply assembly 205, change assembly 203 can change the angle of gas supply assembly 205 with limiting assembly 204, limiting assembly 204 can drive gas supply assembly 205 to rotate, gas supply assembly 205 can change the power of wind power transmission according to the changed angle.

[0055] As Figure 6 Transmission assembly 201 includes servo motor 2011, driving gear 2012 and connecting shaft 2013, servo motor 2011 is bolted in the inner side of ventilation pipe 1011, driving gear 2012 is rotatably connected at the front side of servo motor 2011, connecting shaft 2013 is bolted at the output end of the front side of servo motor 2011, the inner side of driving gear 2012 is in contact with the surface of connecting shaft 2013, by setting transmission assembly 201, servo motor 2011 can be electrified and start after, the electrical energy is converted into rotating mechanical energy, and then the rotating mechanical energy is transmitted to connecting shaft 2013, so that connecting shaft 2013 drives limiting assembly 204 to rotate, driving gear 2012 can be rotated with the driving of driving assembly 202, so as to drive change assembly 203 to rotate.

[0056] As Figure 7As shown, the driving assembly 202 includes a transmission motor 2021, a connecting circular plate 2022 and a driving gear 2023, the transmission motor 2021 is rotatably connected to the front side of the servo motor 2011, the connecting circular plate 2022 is bolted to the output end of the front side of the transmission motor 2021, and the driving gear 2023 is bolted to the surface of the connecting circular plate 2022. The surface of the driving gear 2023 is meshingly connected with the surface of the driving gear 2023. By arranging the driving assembly 202, the transmission motor 2021 can rotate the connecting circular plate 2022 after being powered on and started. The connecting circular plate 2022 can drive the driving gear 2023 to rotate, and the driving gear 2023 can drive the driving gear 2023 to rotate.

[0057] As shown in the Figure 8 The changing assembly 203 includes a driving arc plate 2031, a displacement arc groove 2032 and a bevel port 2033. The driving arc plate 2031 is bolted to the front side of the driving gear 2023. The displacement arc groove 2032 is arranged on the surface of the driving arc plate 2031. The bevel port 2033 is arranged on the front side of the driving arc plate 2031. By arranging the changing assembly 203, the driving arc plate 2031 can drive the displacement arc groove 2032 to rotate, and the displacement arc groove 2032 can drive the air supply assembly 205 to move, so as to facilitate changing the angle of the air supply assembly 205. The bevel port 2033 can drive the arc plate 2031 to become a triangle, and the triangle has structural stability.

[0058] As shown in the Figure 9 The limiting assembly 204 includes a connecting shaft 2041, a limiting circular frame 2042 and a driving arc groove 2043. The connecting shaft 2041 is bolted to the front side of the connecting shaft 2013. The limiting circular frame 2042 is bolted to the front side of the connecting shaft 2041. The inner side of the limiting circular frame 2042 is in contact with the surface of the driving arc plate 2031. The driving arc groove 2043 is arranged on the surface of the limiting circular frame 2042. The side of the driving arc groove 2043 close to the displacement arc groove 2032 is in contact with the displacement arc groove 2032. By arranging the positioning assembly 101, the connecting shaft 2041 can support and limit the limiting circular frame 2042, and can rotate the limiting circular frame 2042 with the transmission assembly 201, so as to drive the air supply assembly 205. The driving arc groove 2043 is in contact with the displacement arc groove 2032 to present an X shape, so that the position of the connecting shaft 2051 can be changed when the displacement arc groove 2032 moves.

[0059] As shown in the Figure 10As shown, the air supply assembly 205 includes a connecting rotating rod 2051, an adjusting fan blade 2052 and a changing sliding rod 2053, the connecting rotating rod 2051 is rotationally connected to the surface of the limiting circular frame 2042, the adjusting fan blade 2052 is bolted on the side of the connecting rotating rod 2051 away from the limiting circular frame 2042, the side of the adjusting fan blade 2052 close to the limiting circular frame 2042 is in contact with the limiting circular frame 2042, the changing sliding rod 2053 is bolted on the side of the adjusting fan blade 2052 close to the driving arc groove 2043, the surface of the changing sliding rod 2053 is slidingly connected with the driving arc groove 2043, and the side of the changing sliding rod 2053 close to the displacement arc groove 2032 is slidingly connected with the displacement arc groove 2032. By arranging the air supply assembly 205, the connecting rotating rod 2051 can support the rotation of the adjusting fan blade 2052, the adjusting fan blade 2052 can transport air, and the changing sliding rod 2053 can change the angle of the adjusting fan blade 2052, so as to change the power consumed by the adjusting fan blade 2052 when transporting air.

[0060] As shown in the figure, Figure 11 The adjusting system 3 includes a control hub 301, a wind measurement module 302, an adjusting module 303 and a power supply module 304, the control hub 301 is bidirectionally electrically connected with the wind measurement module 302, the control hub 301 is bidirectionally electrically connected with the adjusting module 303, and the adjusting system 3 is unidirectionally electrically connected with the power supply module 304. By arranging the adjusting system 3, the control hub 301 can control the control panel 1013 to control the wind measurement module 302 and the adjusting module 303, the wind measurement module 302 can detect wind power in real time, the adjusting module 303 can change wind power output in real time, and the power supply module 304 is municipal power supply.

[0061] The use process is briefly described as follows: first, the adjusting mechanism 2 and the adjusting system 3 are powered on and started, the user can control the adjusting system 3, the control hub 301 can analyze and process the information transmitted by the wind measurement module 302, and then transmit the processed information to the adjusting module 303, the adjusting module 303 can change the wind power transmission power of the adjusting mechanism 2 in real time according to the information content, when it is needed to increase the wind power transmission power, the servo motor 2011 will speed up the driving speed of the connecting rotating shaft 2013, the transmission motor 2021 can drive the driving gear 2023 to rotate, the driving gear 2023 can drive the driving gear 2012 to rotate, the driving gear 2012 can drive the driving arc plate 2031 to rotate, and the displacement arc groove 2032 on the driving arc plate 2031 and the driving arc groove 2043 on the limiting circular frame 2042 will drive the changing sliding rod 2053 to move, so as to push the changing sliding rod 2053 forward, the changing sliding rod 2053 will drive the adjusting fan blade 2052 to rotate around the connecting rotating rod 2051, so as to change the angle of the adjusting fan blade 2052 until the required angle is reached.

[0062] The specific embodiments are only illustrative of the present application, and are not intended to limit the present application. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, and the modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A counter-rotating adjustable axial flow fan, comprising a detection mechanism (1), an adjustment mechanism (2), and an adjustment system (3), characterized in that: The adjustment mechanism (2) is bolted to the inside of the detection mechanism (1). The detection mechanism (1) includes a positioning component (101) and a testing component (102). The testing component (102) is bolted to the top inside the positioning component (101). The adjustment mechanism (2) includes a transmission component (201), a driving component (202), a changing component (203), a limiting component (204), and an air supply component (205). The transmission component (201) is bolted to the inside of the positioning component (101). The driving component (202) is movably connected to the transmission component (101). On the front side of the drive assembly (202), the surface of the drive assembly (202) is meshed with the surface of the transmission assembly (201), the change assembly (203) is bolted to the front side of the transmission assembly (201), the limit assembly (204) is bolted to the output end of the front side of the transmission assembly (201), the inner side of the limit assembly (204) is movably connected to the change assembly (203), the air supply assembly (205) is movably connected to the surface of the limit assembly (204), and the side of the air supply assembly (205) close to the change assembly (203) is in contact with the change assembly (203); The positioning component (101) includes a ventilation duct (1011), a protective net (1012), and a control panel (1013). The protective net (1012) is fastened to the front and rear sides of the inside of the ventilation duct (1011), and the control panel (1013) is fastened to the right side of the ventilation duct (1011). The test assembly (102) includes a support rod (1021), an anemometer (1022), and a fan (1023). The support rod (1021) is bolted to the top of the inside of the ventilation duct (1011), the anemometer (1022) is bolted to the bottom of the support rod (1021), and the fan (1023) is bolted to the rear of the anemometer (1022). The transmission assembly (201) includes a servo motor (2011), a drive gear ring (2012), and a connecting shaft (2013). The servo motor (2011) is bolted to the inside of the ventilation pipe (1011). The drive gear ring (2012) is rotatably connected to the front of the servo motor (2011). The connecting shaft (2013) is bolted to the output end of the front of the servo motor (2011). The inner side of the drive gear ring (2012) is in contact with the surface of the connecting shaft (2013). The drive assembly (202) includes a drive motor (2021), a connecting circular plate (2022), and a drive gear (2023). The drive motor (2021) is rotatably connected to the front side of the servo motor (2011). The connecting circular plate (2022) is bolted to the output end of the front side of the drive motor (2021). The drive gear (2023) is bolted to the surface of the connecting circular plate (2022). The surface of the drive gear (2023) meshes with the surface of the drive gear ring (2012). The alteration component (203) includes a drive arc plate (2031), a displacement arc groove (2032), and a bevel (2033). The drive arc plate (2031) is bolted to the front side of the drive gear ring (2012). The displacement arc groove (2032) is formed on the surface of the drive arc plate (2031), and the bevel (2033) is formed on the front side of the drive arc plate (2031). The limiting component (204) includes a connecting shaft (2041), a limiting circular frame (2042), and a driving arc groove (2043). The connecting shaft (2041) is bolted to the front side of the connecting rotating shaft (2013). The limiting circular frame (2042) is bolted to the front side of the connecting shaft. The inner side of the limiting circular frame (2042) is in contact with the surface of the driving arc plate (2031). The driving arc groove (2043) is formed on the surface of the limiting circular frame (2042). The side of the driving arc groove (2043) closest to the displacement arc groove (2032) is in contact with the displacement arc groove (2032). The air supply assembly (205) includes a connecting rod (2051), an adjusting fan blade (2052), and a changing slide rod (2053). The connecting rod (2051) is rotatably connected to the surface of the limiting circular frame (2042). The adjusting fan blade (2052) is bolted to the side of the connecting rod (2051) away from the limiting circular frame (2042). The side of the adjusting fan blade (2052) near the limiting circular frame (2042) is in contact with the limiting circular frame (2042). The changing slide rod (2053) is bolted to the side of the adjusting fan blade (2052) near the driving arc groove (2043). The surface of the changing slide rod (2053) is slidably connected to the driving arc groove (2043). The side of the changing slide rod (2053) near the displacement arc groove (2032) is slidably connected to the displacement arc groove (2032).

2. The counter-rotating adjustable axial flow fan according to claim 1, characterized in that: The regulating system (3) includes a control center (301), a wind measurement module (302), a regulating module (303), and a power supply module (304). The control center (301) and the wind measurement module (302) are bidirectionally electrically connected, the control center (301) and the regulating module (303) are bidirectionally electrically connected, and the regulating system (3) is unidirectionally electrically connected to the power supply module (304).

3. The control method for a counter-rotating adjustable axial flow fan as described in any one of claims 1-2, characterized in that: Includes the following steps: S1. Wind speed control: First, power on and start the detection mechanism (1). The user controls the control panel (1013) to control the adjustment system (3). The adjustment system (3) can control the detection mechanism (1) and the adjustment mechanism (2). When the adjustment mechanism (2) is started, the ventilation pipe (1011) will be transported by the operation of the adjustment mechanism (2). When the air passes through the measuring fan (1023), the measuring fan (1023) will rotate with the flowing air and transmit the mechanical energy of the rotation to the anemometer (1022). The anemometer (1022) can detect the mechanical energy of the rotation and transmit the detected information to the control panel (1013). The user can control the control panel (1013) to change the power of the air transport in the adjustment mechanism (2) until the control of the detection mechanism (1) and the adjustment mechanism (2) is completed. S2. Fan blade adjustment: First, power on and start the adjustment mechanism (2) and adjustment system (3). The user can control the adjustment system (3). The control center (301) can analyze and process the information transmitted by the wind measurement module (302), and then transmit the processed information to the adjustment module (303). The adjustment module (303) can change the wind power transmission power of the adjustment mechanism (2) in real time according to the information content. When it is necessary to increase the wind power transmission power, the servo motor (2011) will speed up the drive of the connecting shaft (2013). The transmission motor (2021) can electrically drive the gear (202) 3) Rotation drives the gear (2023) to drive the electric active gear ring (2012) to rotate. The active gear ring (2012) drives the drive arc plate (2031) to rotate. The displacement arc groove (2032) on the arc plate (2031) and the drive arc groove (2043) on the limit circle frame (2042) will drive the change slide rod (2053) to move, thereby pushing the change slide rod (2053) forward. The change slide rod (2053) will then drive the electric adjustment fan blade (2052) to rotate slightly connected to the rotating rod (2051), thereby changing the angle of the adjustment fan blade (2052) until the desired angle is reached.

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