Winnowing device for biomass fiber separation

Abstract

The invention belongs to the technical field of biomass fiber screening, in particular to a winnowing device for biomass fiber separation, and provides the following scheme that the winnowing device comprises a winnowing box, horizontal air inlet is achieved on one side of the winnowing box, air exhaust is achieved on the other side of the winnowing box, a feeding channel is formed in the position, close to the air inlet side, of the winnowing box, and a plurality of winnowing cavities are formed in the lower portion in the winnowing box; a dispersing assembly is arranged above the winnowing cavity; the dispersing assembly is provided with a connecting rod installed on the winnowing box, the outer wall of the connecting rod is rotationally connected with a dispersing plate through a torsional spring, the dispersing plate inclines downwards in the air inlet side direction, and a plurality of dispersing grooves are formed in the side face of the dispersing plate. According to the invention, through mutual cooperative monitoring of the airflow monitoring module, the angle monitoring module and the torsion monitoring module correspondingly arranged on the dispersion assembly and integrated and intelligent control of the air speed of the air inlet side, the dispersion effect of biomass fibers in the winnowing box is effectively improved, and the winnowing operation effect is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of biomass fiber screening, and in particular to an air separation device for separating biomass fibers. Background Art

[0002] During the production process, biomass fibers often need to be winnowed to remove impurities or graded and screened.

[0003] Referring to Chinese patent CN110863271A, a biomass fiber air separation device is disclosed, including a shell, a fan is arranged in the shell, a gauze is arranged on the right side of the fan, a four-stage air separation device is arranged inside the shell, the four-stage air separation device includes a first air separation table, a second air separation table, a third air separation table and a fourth air separation table, a drop pipe is arranged at the bottom of the four-stage air separation device, a feed hopper is arranged above the shell, a discharge roller is arranged at the bottom of the feed hopper, an atomizer is installed above the shell, the atomizer is connected to the annular tube on the waste outlet through a conduit, a nozzle is arranged on the inner ring of the waste outlet, a waste collection bag is arranged on the waste outlet, and a baffle is arranged below the feed hopper.

[0004] In commonly used horizontal air separation equipment, a fan enters from an air inlet pipe to air separate the biomass fibers in the air separation chamber. However, the actual air separation effect is easily affected because the biomass fibers in the air separation chamber cannot be effectively separated. Summary of the invention

[0005] Based on the technical problems of the background technology, the present invention proposes an air separation device for separating biomass fibers.

[0006] The present invention proposes an air separation device for separating biomass fibers, comprising an air separation box, one side of the air separation box horizontally inlets air and the other side exhausts air, a feed channel is arranged on the air separation box near the air inlet side, a plurality of air separation chambers are arranged at the lower part of the air separation box, and a dispersion component is arranged above the air separation chamber; the dispersion component is provided with a connecting rod installed with the air separation box, the outer wall of the connecting rod is rotatably connected with a dispersion plate through a torsion spring, the dispersion plate is inclined downward toward the air inlet side, and a plurality of dispersion grooves are arranged on the side of the dispersion plate; an airflow monitoring module, the airflow monitoring module is used to obtain the airflow intensity above the corresponding air separation chamber in real time, upload it to the central processing unit and generate an airflow index I air ; Angle monitoring module, the angle monitoring module is used to obtain the horizontal deflection angle of the corresponding dispersion plate in real time, upload it to the central processor and generate an angle index I θ ; Torque monitoring module, each dispersed component is provided with a torque monitoring module, the torque monitoring module is used to obtain the torque of the corresponding torsion spring in real time, upload it to the central processor and generate a torque index I T ; Through the central processor to the airflow index I air, Angle index I θ and torque index I T Calculate to obtain wind speed index I wind , by comparing the wind speed index with the preset reference index, it is determined whether to adjust the wind speed.

[0007] Preferably, the air inlet side of the air separation box is connected to an air inlet duct, a fan is provided at the end of the air inlet duct, and the air exhaust side of the air separation box is connected to an exhaust duct, a dust removal bag is provided in the exhaust duct.

[0008] Preferably, a vertically placed partition is fixed at a position of the air selection chamber near the air inlet side, a material receiving channel is provided at a position of the air selection chamber near the air exhaust side, a material guide platform is installed between the partition and the material receiving channel, and the top of the material guide platform is inclined downward toward the direction close to the material receiving channel.

[0009] Preferably, the generation logic of the airflow index is as follows: Step 1, the actual airflow intensity at different times within a time t is collected by the airflow monitoring module, and the actual airflow intensity collected at different times within a time t is calibrated as I air-raw (a), where a represents the number of the actual airflow intensity collected at different times within time t, a = 1, 2, 3, 4, ..., x, and x is a positive integer; Step 2, calculate the fluctuation coefficient σ, the calculation expression is: In the formula, Step 3: Calculate the airflow index I air , the calculation expression is: In the formula, I air-ideal It is the preset ideal airflow intensity.

[0010] Preferably, the generation logic of the angle index is as follows: Step 1, obtain the actual deflection angle at different times within a time t through the angle monitoring module, and calibrate the actual deflection angle collected at different times within a time t as θ raw (b), b represents the actual deflection angle number at different times within the time t, b = 1, 2, 3, 4, ..., y, y represents the number of actual deflection angle numbers at different times within the time t, and y is a positive integer; Step 2, calculate the angle index I θ , the calculation expression is: In the formula, θ max is the preset maximum allowable deflection angle.

[0011] Preferably, the torque index generation logic is as follows: Step 1, the actual torque at different times within a time period of t is obtained through a torque monitoring module, and the actual torque collected at different times within a time period of t is calibrated as T raw(c), c represents the actual deflection angle number at different times within the time t, c = 1, 2, 3, 4, ..., z, z represents the number of actual deflection angle numbers at different times within the time t, and z is a positive integer; Step 2, calculate the torsion spring aging coefficient λ, the calculation expression is: Where, t use represents the service life of the torsion spring, N represents the number of cycles, f and g are coefficients obtained through experimental fitting, and the value range of λ is [0,1]; Step 3, calculate the fatigue recovery coefficient μ of the torsion spring. The calculation expression of the fatigue recovery coefficient of the torsion spring is: Where, t cumulative Indicates the cumulative working time of the torsion spring, t rest represents the cumulative rest time of the torsion spring, α and β are coefficients determined by experiments; Step 4: Calculate the torque index I T , the calculation expression is: Where, T std Indicates the preset standard torque.

[0012] Preferably, the calculation expression of the wind speed index is: In the formula, w1+w2+w3=1, w1 is the weight coefficient of the airflow index, w2 is the weight coefficient of the angle index, w3 is the weight coefficient of the torque index, and w1, w2, and w3 are predetermined through experiments.

[0013] Preferably, a flow balancing component is provided near the air inlet slot in the air separation box, a base is installed at the bottom of the flow balancing component, and the flow balancing component is provided with a mesh frame, both ends of the mesh frame are fitted with the inner walls of both ends of the air separation box, a flow balancing cavity is formed between the mesh frame and the end of the air separation box close to the air inlet side, and mesh holes are evenly distributed at the end of the mesh frame away from the air inlet side.

[0014] Preferably, two horizontally placed electric guide rails are installed in the flow equalizing chamber, and the electric guide rails are connected to vertically placed flow equalizing plates. The two flow equalizing plates are in sliding contact with each other, and horizontally extending flow equalizing grooves are opened on the flow equalizing plates. The positions of the flow equalizing grooves on the two flow equalizing plates correspond.

[0015] The beneficial effects of the present invention are:

[0016] 1. In the present invention, the airflow monitoring module, angle monitoring module and torque monitoring module corresponding to the dispersed components are coordinated with each other to achieve integrated and intelligent control of the wind speed on the air inlet side, thereby effectively improving the dispersion effect of the biomass fiber in the air separation box and the air separation effect.

[0017] 2. In the present invention, under the action of air flow movement and the impact of biomass fibers on the dispersion plate, the dispersion plate may deflect around the connecting rod due to the uneven distribution of biomass fibers. Under the action of the torsion spring, the dispersion plate is reciprocated and deflected, thereby further improving the effectiveness of biomass fiber separation and air selection.

[0018] 3. In the present invention, by adjusting the size of the overlapping part of the corresponding flow equalizing grooves between the two flow equalizing plates, the airflow blown in from the air inlet side hits the flow equalizing plate, part of the airflow directly flows out through the flow equalizing groove, and part of the airflow flows out from the four sides of the flow equalizing plate into the air separation box, thereby improving the uniform distribution of the airflow blowing to the biomass fiber in the horizontal direction, so as to improve the effectiveness of the air separation operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of an air separation device for biomass fiber separation proposed by the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of an air separation box of an air separation device for biomass fiber separation proposed by the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of a dispersed component of a wind selection device for biomass fiber separation proposed by the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of a dispersion plate of an air selection device for biomass fiber separation proposed by the present invention;

[0023] Figure 5 This is a schematic diagram of the position structure of a flow equalization component of a wind selection device for biomass fiber separation proposed by the present invention;

[0024] Figure 6 This is a schematic diagram of the position structure of a screen frame of a wind selection device for biomass fiber separation proposed by the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of a flow equalizing plate of an air selection device for biomass fiber separation proposed by the present invention;

[0026] Figure 8 This is a schematic diagram of the module structure of a wind selection device for biomass fiber separation proposed by the present invention.

[0027] In the figure: 1 air separation box, 101 box cover, 2 air inlet pipe, 3 fan, 4 exhaust pipe, 5 feeding channel, 6 air separation chamber, 7 material collection channel, 8 dispersion component, 801 fixed column, 802 connecting rod, 803 connecting sleeve, 804 dispersion plate, 805 dispersion slot, 9 partition, 10 material guide table, 11 angle monitoring module, 12 airflow monitoring module, 13 base, 14 flow equalization component, 141 mesh frame, 142 flow equalization chamber, 143 electric guide rail, 144 flow equalization plate, 145 flow equalization slot. DETAILED DESCRIPTION

[0028] Example 1: Reference Figure 1-Figure 4 and Figure 8 A wind selection device for separating biomass fibers comprises a wind selection box 1, a plurality of box covers 101 are detachably connected to the end of the wind selection box 1, one side of the wind selection box 1 is horizontally inlet, and the other side is exhaust, a feed channel 5 is arranged near the air inlet side of the wind selection box 1, a spiral feeding structure is arranged at the bottom of the feed channel 5, a plurality of wind selection chambers 6 are arranged at the bottom of the wind selection box 1, and a dispersion component 8 is arranged above the wind selection chamber 6; the dispersion component 8 is provided with a fixing column 801 fixed to the top of the wind selection box 1, a vertically placed connecting rod 802 is installed at the bottom end of the fixing column 801, the outer wall of the connecting rod 802 is rotatably connected to a connecting sleeve 803 through a torsion spring, a dispersion plate 804 is fixed to the outer wall of the connecting sleeve 803, the dispersion plate 804 is inclined downward toward the air inlet side, and the two ends of the dispersion plate 804 are arranged flush in a normal state, and a plurality of dispersion grooves 805 are opened on the side of the dispersion plate 804;

[0029] Airflow monitoring module 12, each air selection chamber 6 is provided with an airflow monitoring module 12, the airflow monitoring module 12 is installed on the fixed column 801, the airflow monitoring module 12 can choose to use an airflow sensor, the airflow monitoring module 12 is used to obtain the airflow intensity above the corresponding air selection chamber 6 in real time, upload it to the central processor and generate an airflow index I air ;

[0030] Angle monitoring module 11, each dispersion component 8 is provided with an angle monitoring module 11, the angle monitoring module 11 can choose to use a laser displacement sensor, the angle monitoring module 11 is installed at the top of the air separation box 1 corresponding to the dispersion component 8, the angle monitoring module 11 is used to obtain the horizontal deflection angle of the corresponding dispersion plate 804 relative to the connecting rod 802 in real time, upload it to the central processor and generate an angle index I θ ;

[0031] Torque monitoring module: each dispersed component 8 is provided with a torque monitoring module, the torque monitoring module is connected to the torsion spring between the connecting rod 802 and the connecting sleeve 803, the torque monitoring module can choose to use a torque sensor, the torque monitoring module is used to obtain the torque of the corresponding torsion spring in real time, upload it to the central processor and generate a torque index I T;

[0032] The airflow index I air , Angle index I θ and torque index I T Calculate the wind speed index I wind , by comparing the wind speed index with the preset reference index, it is determined whether to adjust the wind speed; in actual use, the biomass fibers to be separated are continuously fed from the position of the feed channel 5 toward the position close to the air inlet side of the air separation box 1, and then the air separation operation is performed by the horizontal wind from the air inlet side to the exhaust side of the air separation box 1. Under the effect of the weight difference of different biomass fibers, the biomass fibers of different weights will be dispersed and fall into different air separation chambers 6 below to achieve the air separation operation;

[0033] When the biomass fibers are about to fall down into the corresponding air separation chamber 6, they will hit the inclined dispersion plate 804: the agglomerated biomass fibers will be dispersed due to the collision with the dispersion plate 804 and the influence of the dispersion groove 805, so as to prevent the biomass fibers that should fall at the back from falling at the front due to agglomeration; some of the biomass fibers that would have fallen will roll down along the biomass fibers, and some will pass through the dispersion groove 805 and fall; while the lighter biomass fibers will slide over the dispersion plate 804 or pass through the dispersion groove 805 from above. The dispersion slot 805 continues to fly backwards; thereby, the dispersion effect of the biomass fibers is effectively improved by the arrangement of the dispersion plate 804 and the dispersion slot 805 above the air selection chamber 6, thereby ensuring the effectiveness of the air selection and separation of the biomass fibers; and under the action of the air flow movement and the impact of the biomass fibers on the dispersion plate 804, the dispersion plate 804 may deflect around the connecting rod 802 due to the uneven distribution of the biomass fibers, and the dispersion plate 804 is reciprocated and deflected under the action of the torsion spring, thereby further improving the effectiveness of the air selection of the biomass fiber separation;

[0034] At the same time, an airflow monitoring module 12 is provided at each air selection chamber 6 to obtain the airflow intensity above the corresponding air selection chamber 6 in real time. If the airflow intensity above the corresponding air selection chamber 6 is too small, the biomass fibers may not be dispersed or the air selection effect may be affected. An angle monitoring module 11 is provided to obtain the horizontal deflection angle of the corresponding dispersion plate 804 relative to the connecting rod 802 in real time. If the deflection angle of the dispersion plate 804 is too large, the biomass fibers may be concentrated to one side and cannot be effectively dispersed. A torque monitoring module is provided to obtain the torsion of the corresponding torsion spring in real time. If the torsion spring torsion is too large, the rebound force may be too large and the biomass fibers may be damaged or In order to affect the air selection effect, the central processing unit calculates the airflow index, angle index and torque index to obtain the wind speed index corresponding to each air selection chamber 6, and compares the wind speed index with the preset reference index of the corresponding air selection chamber 6 position to determine whether to adjust the wind speed. If adjustment is required, the wind speed on the air inlet side is adjusted, so that the airflow monitoring module 12, angle monitoring module 11 and torque monitoring module corresponding to the dispersion component 8 are coordinated with each other to monitor the wind speed on the air inlet side, and the wind speed is integrated and intelligently controlled, so as to effectively improve the dispersion effect of the biomass fiber in the air selection box 1 and effectively improve the air selection operation effect.

[0035] In the present invention, the air inlet side of the air separation box 1 is connected to the air inlet duct 2, and a fan 3 is arranged at the end of the air inlet duct 2. The rotation speed of the fan 3 can be adjusted by PWM pulse width modulation speed regulation to adjust the wind speed on the air inlet side. The exhaust side of the air separation box 1 is connected to the exhaust duct 4, and a dust removal bag is arranged in the exhaust duct 4. A vertically placed partition 9 is fixed to the position of the air separation chamber 6 near the air inlet side, and a material receiving channel 7 is arranged at the position of the air separation chamber 6 near the exhaust side. A material guide platform 10 is installed between the partition 9 and the material receiving channel 7, and the top of the material guide platform 10 is inclined downward toward the direction close to the material receiving channel 7, so that the space of the air separation area is expanded by the arrangement of the partition 9, the material guide platform 10 and the material receiving channel 7, and it is convenient to collect and process the fallen biomass fibers.

[0036] In the present invention, the generation logic of the airflow index is:

[0037] Step 1: The actual airflow intensity at different times is collected by the airflow monitoring module 12 within a time period t, and the actual airflow intensity collected at different times within a time period t is calibrated as I air-raw (a), where a represents the number of the actual airflow intensity collected at different times within time t, a = 1, 2, 3, 4, ..., x, and x is a positive integer;

[0038] Step 2: Calculate the volatility coefficient σ. The calculation expression is:

[0039]

[0040] In the formula,

[0041] Step 3: Calculate the airflow index I air , the calculation expression is:

[0042]

[0043] In the formula, I air-ideal It is the preset ideal airflow intensity; the airflow monitoring module 12 collects the airflow intensity data above the air selection chamber in real time, calculates the average value, standard deviation and fluctuation coefficient within the set time window, and then obtains the airflow index, thereby improving the timeliness, accuracy and effectiveness of the monitoring data.

[0044] In the present invention, the generation logic of the angle index is:

[0045] Step 1: Obtain the actual deflection angle at different times within a time period t through the angle monitoring module 11, and calibrate the actual deflection angle collected at different times within a time period t as θ raw (b), b represents the actual deflection angle number at different times within the time t, b=1, 2, 3, 4, ..., y, y represents the number of actual deflection angle numbers at different times within the time t, and y is a positive integer;

[0046] Step 2: Calculate the angle index I θ , the calculation expression is:

[0047]

[0048] In the formula, θ max is the preset maximum allowable deflection angle; when At θ max When the angle is in the middle range, the angle index is higher, and when it deviates from the middle range, the index decreases, so as to ensure the effectiveness and accuracy of regulating the wind speed on the inlet side by the deflection angle.

[0049] In the present invention, the torque index generation logic is:

[0050] Step 1: Obtain the actual torque at different times within time t through the torque monitoring module, and calibrate the actual torque collected at different times within time t as T raw (c), c represents the actual deflection angle number at different times within time t, c = 1, 2, 3, 4, ..., z, z represents the number of actual deflection angle numbers at different times within time t, and z is a positive integer;

[0051] Step 2: Calculate the torsion spring aging coefficient λ. The calculation expression is: In the formula, t userepresents the service life of the torsion spring, N represents the number of cycles, f and g are coefficients obtained through experimental fitting, and the value range of λ is [0,1];

[0052] Step 3: Calculate the fatigue recovery coefficient μ of the torsion spring. The calculation expression of the fatigue recovery coefficient of the torsion spring is: Where, t cumulative Indicates the cumulative working time of the torsion spring, t rest represents the cumulative rest time of the torsion spring, α and β are coefficients determined experimentally;

[0053] Step 4: Calculate the torque index I T , the calculation expression is: Where, T std Represents the preset standard torque; through the above optimized calculation formula and calculation logic, it is possible to more comprehensively consider the influence of various factors of the torsion spring on the torque during the working process, so as to more accurately calculate the torque index and provide more reliable data support for the operation status evaluation and control of the air selection device.

[0054] In the present invention, the calculation expression of the wind speed index is:

[0055]

[0056] In the formula, w1+w2+w3=1, w1 is the weight coefficient of the airflow index, w2 is the weight coefficient of the angle index, w3 is the weight coefficient of the torque index, and w1, w2, and w3 are predetermined through experiments.

[0057] Example 2: Reference Figure 1-Figure 8, a wind selection device for biomass fiber separation, based on Example 1, a flow equalizing component 14 is arranged near the air inlet slot in the wind selection box 1, a base 13 is installed at the bottom of the flow equalizing component 14, the base 13 corresponds to the position of the feed channel 5, the top of the base 13 is flush with the top of the partition 9, and the flow equalizing component 14 is provided with a mesh frame 141, the two ends of the mesh frame 141 are in contact with the inner walls of the two ends of the wind selection box 1, and a flow equalizing cavity 142 is formed between the mesh frame 141 and the end of the wind selection box 1 close to the air inlet side, and mesh holes are evenly distributed at the end of the mesh frame 141 away from the air inlet side, and two horizontally placed electric guide rails 143 are installed in the flow equalizing cavity 142, and the electric guide rails 143 are connected to vertically placed flow equalizing plates 144, and the two flow equalizing plates 144 are in sliding contact with each other, and a horizontally extending flow equalizing groove 145 is opened on the flow equalizing plate 144, and the two The positions of the flow equalizing grooves 145 on the flow equalizing plates 144 correspond to each other, and the electric guide rails 143 can be used to realize the horizontal movement of the two flow equalizing plates 144, so that the two flow equalizing plates 144 can be moved horizontally and staggered, thereby adjusting the size of the overlapping part of the corresponding flow equalizing grooves 145 between the two flow equalizing plates 144. The airflow blown in from the air inlet side hits the flow equalizing plate 144, part of the airflow directly flows out through the flow equalizing grooves 145, and part of the airflow flows out from the four sides of the flow equalizing plate 144 into the air separation box, thereby improving the uniform distribution of the airflow blowing to the biomass fiber in the horizontal direction, so as to improve the effectiveness of the air separation operation, and the deflection direction of the dispersion plate 804 monitored by the angle monitoring module 11 can adjust the size of the overlapping part of the flow equalizing plate 144 and the distance that the flow equalizing plate 144 extends toward the end direction, thereby further ensuring the effectiveness of the air separation of the biomass fiber.

[0058] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wind separation device for separating biomass fibers, comprising a wind separation box (1), wherein one side of the wind separation box (1) horizontally inlets air and the other side exhausts air, and a feed channel (5) is provided on the wind separation box (1) near the air inlet side, characterized in that: A plurality of air separation chambers (6) are arranged at the bottom of the air separation box (1), and a dispersion component (8) is arranged above the air separation chamber (6); The dispersion component (8) is provided with a connecting rod (802) installed with the air separation box (1); the outer wall of the connecting rod (802) is rotatably connected to a dispersion plate (804) via a torsion spring; the dispersion plate (804) is inclined downward toward the air inlet side; and a plurality of dispersion grooves (805) are provided on the side of the dispersion plate (804); The airflow monitoring module (12) is used to obtain the airflow intensity above the corresponding air selection chamber (6) in real time, upload it to the central processor and generate an airflow index I air ; An angle monitoring module (11), the angle monitoring module (11) is used to obtain the horizontal deflection angle of the corresponding dispersion plate (804) in real time, upload it to the central processor and generate an angle index I θ ; Torque monitoring module: each dispersed component (8) is provided with a corresponding torque monitoring module, and the torque monitoring module is used to obtain the torque of the corresponding torsion spring in real time, upload it to the central processor and generate a torque index I T ; The airflow index I air , Angle index I θ and torque index I T Calculate to obtain wind speed index I wind , by comparing the wind speed index with the preset reference index, it is determined whether to adjust the wind speed.

2. The air separation device for separating biomass fibers according to claim 1, characterized in that: The air inlet side of the air separation box (1) is connected to an air inlet pipe (2), a fan (3) is arranged at the end of the air inlet pipe (2), and the air exhaust side of the air separation box (1) is connected to an exhaust pipe (4), and a dust removal bag is arranged in the exhaust pipe (4).

3. The air separation device for separating biomass fibers according to claim 1, characterized in that: A vertically placed partition plate (9) is fixed at a position close to the air inlet side of the air selection chamber (6); a material receiving channel (7) is arranged at a position close to the air outlet side of the air selection chamber (6); a material guide platform (10) is installed between the partition plate (9) and the material receiving channel (7); and the top of the material guide platform (10) is inclined downward toward the direction close to the material receiving channel (7).

4. A wind separation device for separating biomass fibers according to any one of claims 1 to 3, characterized in that: The generation logic of the airflow index is: Step 1: The actual airflow intensity at different times within a time period t is collected by the airflow monitoring module (12), and the actual airflow intensity collected at different times within a time period t is calibrated as I air-raw (a), where a represents the number of the actual airflow intensity collected at different times within time t, a = 1, 2, 3, 4, ..., x, and x is a positive integer; Step 2: Calculate the volatility coefficient σ. The calculation expression is: In the formula, Step 3: Calculate the airflow index I air , the calculation expression is: In the formula, I air-ideal It is the preset ideal airflow intensity.

5. A wind separation device for separating biomass fibers according to any one of claims 1 to 3, characterized in that: The generation logic of the angle index is: Step 1: Obtain the actual deflection angle at different times within a time period t through the angle monitoring module (11), and calibrate the actual deflection angle collected at different times within a time period t as θ raw (b), b represents the actual deflection angle number at different times within the time t, b=1, 2, 3, 4, ..., y, y represents the number of actual deflection angle numbers at different times within the time t, and y is a positive integer; Step 2: Calculate the angle index I θ , the calculation expression is: In the formula, θ max is the preset maximum allowable deflection angle.

6. A wind separation device for separating biomass fibers according to any one of claims 1 to 3, characterized in that: The torque index generation logic is: Step 1: Obtain the actual torque at different times within time t through the torque monitoring module, and calibrate the actual torque collected at different times within time t as T raw (c), c represents the actual deflection angle number at different times within time t, c = 1, 2, 3, 4, ..., z, z represents the number of actual deflection angle numbers at different times within time t, and z is a positive integer; Step 2: Calculate the torsion spring aging coefficient λ. The calculation expression is: Where, t use represents the service life of the torsion spring, N represents the number of cycles, f and g are coefficients obtained through experimental fitting, and the value range of λ is [0,1]; Step 3: Calculate the fatigue recovery coefficient μ of the torsion spring. The calculation expression of the fatigue recovery coefficient of the torsion spring is: Where, t cumulative Indicates the cumulative working time of the torsion spring, t rest represents the cumulative rest time of the torsion spring, α and β are coefficients determined experimentally; Step 4: Calculate the torque index I T , the calculation expression is: Where, T std Indicates the preset standard torque.

7. A wind separation device for separating biomass fibers according to any one of claims 1 to 3, characterized in that: The calculation expression of the wind speed index is: In the formula, w1+w2+w3=1, w1 is the weight coefficient of the airflow index, w2 is the weight coefficient of the angle index, w3 is the weight coefficient of the torque index, and w1, w2, and w3 are predetermined through experiments.

8. The air separation device for separating biomass fibers according to claim 5, characterized in that: A flow balancing component (14) is arranged near the air inlet slot in the air separation box (1), a base (13) is installed at the bottom of the flow balancing component (14), and the flow balancing component (14) is provided with a mesh frame (141), the two ends of the mesh frame (141) are in contact with the inner walls of the air separation box (1), a flow balancing cavity (142) is formed between the mesh frame (141) and the end of the air separation box (1) close to the air inlet side, and mesh holes are evenly distributed at the end of the mesh frame (141) away from the air inlet side.

9. The air separation device for separating biomass fibers according to claim 8, characterized in that: Two horizontally placed electric guide rails (143) are installed in the flow equalizing chamber (142), and the electric guide rails (143) are connected to vertically placed flow equalizing plates (144). The two flow equalizing plates (144) are in sliding contact with each other, and the flow equalizing plates (144) are provided with horizontally extending flow equalizing grooves (145), and the positions of the flow equalizing grooves (145) on the two flow equalizing plates (144) correspond.

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