A smart ventilation fan for industrial production

Abstract

This invention relates to the field of industrial ventilation technology, specifically disclosing an intelligent ventilation fan for industrial production, comprising a negative pressure fan and a three-way valve. The three-way valve is installed on the right side wall of the negative pressure fan. The suction force of the negative pressure fan creates a negative pressure state within the three-way valve. Two branches of the three-way valve are respectively equipped with a heat absorption mechanism and one end of an air pipe. An electronic thermometer and a controller are respectively installed at the top and bottom of the front of the heat absorption mechanism. The controller is electrically connected to the electronic thermometer, the negative pressure fan, and the three-way valve. The electronic thermometer monitors the temperature inside the factory. This invention completely solves the dead zone problem caused by the straight exhaust of traditional exhaust fans, ensuring uniform air circulation within the factory, achieving comprehensive cooling, and avoiding the adverse effects of localized high temperatures on the production process and equipment operation. It not only protects the respiratory health of workers and reduces the impact of dust adhesion on production equipment, but also significantly improves the quality of the final product. Furthermore, the single-power reuse design makes the equipment structure more compact and energy-efficient.

Description

Technical Field

[0001] This invention relates to the field of industrial ventilation technology, specifically to an intelligent ventilation fan for industrial production. Background Technology

[0002] Industrial exhaust fans, also known as ventilation fans, air exchange fans, or negative pressure fans, are industrial ventilation equipment designed based on the principles of air convection and negative pressure ventilation. Their core application scenarios cover factories, workshops, greenhouses, and various commercial venues. They are mainly used to achieve functions such as ventilation and cooling, dust removal, and odor removal, and are one of the important devices for optimizing the industrial production environment.

[0003] In existing factory ventilation systems, exhaust fans are mostly installed in a spaced-out manner. However, since traditional exhaust fans are essentially linear exhaust structures, dead zones are easily formed in the factory, resulting in uneven air circulation and causing localized high temperatures, which affects the stability of the production environment. At the same time, the raw material screening process in industrial production is usually carried out inside the factory. During this process, a large amount of dust and other impurities are inevitably generated and diffused into the air. This not only causes air pollution in the factory and directly harms the respiratory health of workers, but may also cause dust to adhere to the surface of production equipment, affecting the stability of equipment operation and the quality of the final product. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent ventilation fan for industrial production, which solves the problems of uneven cooling in existing technologies, inability to remove impurities from materials at the source, and the resulting impurities not only polluting the air but also affecting product quality.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an intelligent ventilation fan for industrial production, comprising a negative pressure fan and a three-way valve. The three-way valve is installed on the right side wall of the negative pressure fan. The suction force of the negative pressure fan can create a negative pressure state inside the three-way valve. The two branches of the three-way valve are respectively equipped with a heat absorption mechanism and one end of an air pipe. The upper and lower ends of the front of the heat absorption mechanism are respectively equipped with an electronic thermometer and a controller. The controller is electrically connected to the electronic thermometer, the negative pressure fan, and the three-way valve. The electronic thermometer monitors the temperature inside the plant. When the temperature inside the plant exceeds the limit, the controller starts the negative pressure fan to improve the air permeability inside the plant and achieve intelligent ventilation and cooling. The other end of the air pipe is equipped with an air separation mechanism. The three-way valve can control the connection between the negative pressure fan and the heat absorption mechanism or the air separation mechanism. The air separation mechanism is powered by the heat absorption mechanism and uses negative pressure to suck away impurities in the material, thereby achieving air separation of the material.

[0006] Preferably, the heat absorption mechanism includes a housing, a first gas collecting hood is installed on the left side wall of the housing, and the left end of the first gas collecting hood is installed with the right end of the three-way valve. Several louvers are installed from front to back on the bottom of the inner cavity of the housing via bearings. A rotating assembly is installed on the lower surface of the housing, and the louvers are driven to swing synchronously by the rotating assembly.

[0007] Preferably, the rotating assembly includes a base mounted on the lower surface of the housing. A first rotating shaft is mounted on the middle left side of the inner cavity of the base via a bearing. A first gear is mounted on the top of the outer wall of the first rotating shaft. Several second gears are mounted on the right side of the inner cavity of the base from front to back via pins, and the second gears are mounted to the bottom of the louvers. A guide rod is mounted in the middle of the inner cavity of the base along the front-back direction. A rack that meshes with the second gears is slidably connected to the outer wall of the guide rod. The outer wall of the guide rod is rectangular to prevent the rack from rotating and to maintain a stable transmission effect between the rack and the second gears. Several teeth that mesh with the first gears are mounted on the middle left side wall of the rack from front to back. A rotating unit is mounted on the left front end of the inner cavity of the base. A plug rod that inserts into the rotating unit is mounted on the front end of the left side wall of the rack. The transmission between the rack and the second gears causes all the louvers to swing synchronously, changing the exhaust direction in the factory and preventing dead zones in the exhaust.

[0008] Preferably, the number of teeth of the second gear is more than three times the number of teeth of the first gear.

[0009] Preferably, the rotating unit includes a motor installed on the left side of the front side of the inner cavity of the base. The motor is electrically connected to the controller. A hollow cylinder is installed at the output end of the motor. A guide groove is opened on the outer wall of the hollow cylinder, and the insertion rod is inserted into the inner cavity of the guide groove; providing conditions for the movement of the insertion rod and serving as the power for the rack to move back and forth.

[0010] Preferably, the guide grooves are inclinedly distributed on the outer wall of the hollow cylinder, with their ends connected.

[0011] Preferably, the air separation mechanism includes an air separation box, a second gas collecting hood is installed on the top left end of the air separation box, the left end of the second gas collecting hood is connected to an air pipe, the second gas collecting hood expands the air intake area of ​​the air separation box, a funnel is installed on the top of the air separation box, a valve is provided at the bottom of the funnel, the valve adjusts the material feed rate, a collection box is placed at the bottom of the inner cavity of the air separation box, the collection box is used to collect the material after impurity removal, and a material diffusion component is installed on the top of the inner cavity of the air separation box.

[0012] Preferably, the material diffusion assembly includes two sliding rods installed inside the air classifier box. A sliding seat is slidably connected to the middle of the outer wall of each sliding rod. Two screen plates are horizontally installed at the upper and lower ends of the right side wall of the sliding seat. The screen plates intercept the material, allowing it to diffuse through the mesh of the screen plates. A second rotating shaft is installed on the left end of the upper surface of the air classifier box via a bearing. The top end of the second rotating shaft is locked to the bottom end of the first rotating shaft via an electromagnetic coupling. The electromagnetic coupling is electrically connected to a controller to control the linkage and separation of the first and second rotating shafts. A swing rod is installed at the bottom end of the second rotating shaft. A groove is formed on the outer wall of the swing rod. A roller that inserts into the inner cavity of the groove is installed at the top end of the sliding seat. This shakes the material, causing the material particles to diffuse and prevent particle aggregation and falling, which would lead to incomplete impurity removal.

[0013] Preferably, the sieve plate and the slide are connected by a snap-fit, and the sieve plate is made with various aperture sizes according to the particle size of the material.

[0014] The present invention proposes an intelligent ventilation fan for industrial production, which has the following advantages:

[0015] 1. This invention utilizes the electrical linkage between an electronic thermometer and a controller to respond in real time to changes in factory temperature. When the temperature exceeds the limit, it automatically activates the negative pressure fan and motor, achieving intelligent ventilation and cooling. The motor drives the hollow cylinder to rotate, and the cooperation of the guide groove and insert rod drives the rack to move smoothly back and forth along the guide rod. The meshing transmission between the rack and the second gear drives all the louvers to swing synchronously, effectively changing the direction of air intake and exhaust in the factory. This completely solves the dead zone problem caused by the straight exhaust of traditional exhaust fans, ensuring uniform air circulation in the factory, achieving comprehensive cooling, and preventing localized high temperatures from adversely affecting the production process and equipment operation.

[0016] 2. This invention reuses the power of the heat absorption mechanism in the air separation mechanism. An electromagnetic coupling controls the linkage between the first and second rotating shafts. The meshing of the first gear drives the swing arm to oscillate back and forth. Combined with the sliding engagement of the rollers and the slide groove, this achieves the back-and-forth movement of the slide block and the screen plate. The screen plate can be flexibly replaced according to the particle size of the material, effectively dispersing the material falling from the funnel and increasing the surface area of ​​the falling particles. Utilizing the weight difference between the material particles and impurities such as dust, combined with the negative pressure suction of the second air collection hood, impurities mixed in with the material are sucked away at the source, preventing impurities from spreading and polluting the factory air. This not only protects the respiratory health of workers and reduces the impact of dust adhesion on production equipment, but also significantly improves the quality of the final product. Furthermore, the single-power reuse design makes the equipment structure more compact and energy-efficient. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a perspective view of the heat absorption mechanism of the present invention;

[0019] Figure 3 This is a perspective view of the rotating component of the present invention;

[0020] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 For the present invention Figure 3 Enlarged view at point B in the middle;

[0022] Figure 6 This is a perspective view of the rotating unit of the present invention;

[0023] Figure 7 This is a perspective view of the air separation mechanism of the present invention;

[0024] Figure 8 This is a perspective view of the material diffusion component of the present invention.

[0025] In the diagram: 1. Negative pressure fan; 2. Three-way valve; 3. Heat absorption mechanism; 4. Air pipe; 5. Electronic thermometer; 6. Controller; 7. Air separation mechanism; 31. Outer shell; 32. First air collection hood; 33. Louver; 34. Rotating assembly; 341. Base; 342. First rotating shaft; 343. First gear; 344. Second gear; 345. Guide rod; 346. Rack; 347. Tooth; 348. Rotating unit; 349. Insert rod; 3481. Motor; 3482. Hollow cylinder; 3483. Guide groove; 71. Air separation box; 72. Second air collection hood; 73. Funnel; 74. Collection box; 75. Material diffusion assembly; 751. Slide rod; 752. Slide seat; 753. Screen plate; 754. Second rotating shaft; 755. Swing rod; 756. Slide groove; 757. Roller. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figures 1-8 This invention provides a technical solution: an intelligent ventilation fan for industrial production, comprising a negative pressure fan 1 and a three-way valve 2. The three-way valve 2 is installed on the right side wall of the negative pressure fan 1. The suction force of the negative pressure fan 1 can create a negative pressure state inside the three-way valve 2. A heat absorption mechanism 3 and an air pipe 4 are respectively installed on one end of the two branches of the three-way valve 2. An electronic thermometer 5 and a controller 6 are respectively installed on the upper and lower ends of the front of the heat absorption mechanism 3. The controller 6 is electrically connected to the electronic thermometer 5, the negative pressure fan 1, and the three-way valve 2. The electronic thermometer 5 monitors the temperature inside the plant. When the temperature inside the plant exceeds the limit, the controller 6 starts the negative pressure fan 1 to improve the air permeability inside the plant and realize intelligent ventilation and cooling. An air separation mechanism 7 is installed at the other end of the air pipe 4. The three-way valve 2 can control the negative pressure fan 1 to connect with the heat absorption mechanism 3 or the air separation mechanism 7. The air separation mechanism 7 is powered by the heat absorption mechanism 3 and uses negative pressure to suck away impurities in the material, thus realizing air separation of the material.

[0028] As a preferred embodiment, the heat absorption mechanism 3 further includes a housing 31, with a first gas collecting hood 32 installed on the left side wall of the housing 31. The left end of the first gas collecting hood 32 is installed with the right end of the three-way valve 2. The first gas collecting hood 32 allows the gas to be concentrated and enter the three-way valve 2. Several louvers 33 are installed from front to back at the bottom of the inner cavity of the housing 31 through bearings. A rotating component 34 is installed on the lower surface of the housing 31. The rotating component 34 drives the louvers 33 to swing synchronously, and the louvers 33 change the direction of gas collection, so that the temperature inside the factory is evenly reduced.

[0029] As a preferred embodiment, the rotating assembly 34 further includes a base 341 mounted on the lower surface of the housing 31. A first rotating shaft 342 is mounted on the middle left side of the inner cavity of the base 341 via a bearing. A first gear 343 is mounted on the top of the outer wall of the first rotating shaft 342. Several second gears 344 are mounted on the right side of the inner cavity of the base 341 from front to back via pins, and the second gears 344 are mounted to the bottom of the louvers 33. The number of teeth of the second gears 344 is more than three times the number of teeth of the first gears 343. When the moving speed of the rack 346 remains constant, the first gear 343 increases the angular velocity relative to the second gears 344. The first gear 343 can not only meet the material screening requirements, but the second gears 344 can also meet the exhaust and reversing requirements. A guide rod 345 is mounted in the middle of the inner cavity of the base 341 along the front-back direction. A rack 346 that meshes with the second gears 344 is slidably connected to the outer wall of the guide rod 345. The outer wall of the guide rod 345 is rectangular to prevent the rack 346 from being engaged with the second gears 344. The rack 346 rotates to maintain a stable transmission effect with the second gear 344. Several teeth 347 that mesh with the first gear 343 are installed from front to back on the middle of the left side wall of the rack 346. A rotating unit 348 is installed on the left side of the inner cavity of the base 341. A plug rod 349 that plugs into the rotating unit 348 is installed on the front end of the left side wall of the rack 346. The plug rod 349 is a cylinder. When the guide groove 3483 changes angle, the plug rod 349 can still slide smoothly in the guide groove 3483 by means of its own curved surface. The rotating component 34 adopts an integrated structural design. The guide rod 345 ensures stable transmission between the rack 346 and the second gear 344. When the rack moving speed remains unchanged, the angular velocity of the first gear 343 is amplified, taking into account the power requirements of material screening and the efficiency of air duct reversal. At the same time, the plug rod 349 adapts to the angle change of the inclined guide groove 3483 to ensure the overall operation is stable and reliable, and realizes efficient adaptation of a single component with dual functions.

[0030] As a preferred embodiment, the rotating unit 348 further includes a motor 3481 installed on the left side of the front cavity of the base 341. The motor 3481 is electrically connected to the controller 6. A hollow cylinder 3482 is installed at the output end of the motor 3481. The hollow cylinder 3482 reduces its own weight, thereby reducing the rotational resistance of the motor 3481. A guide groove 3483 is opened on the outer wall of the hollow cylinder 3482, and the insertion rod 349 is inserted into the inner cavity of the guide groove 3483. The guide groove 3483 is inclinedly distributed on the outer wall of the hollow cylinder 3482 with its ends connected. If the guide groove 3483 is divided into two parts with the front and rear ends as the center line, the left and right parts are symmetrical curved surface structures. If one side of the curved surface presses the insertion rod 349 forward, the other side of the curved surface can press the insertion rod 349 backward, thereby realizing the back-and-forth movement of the rack 346.

[0031] When the equipment is in ventilation and cooling mode or air separation and impurity removal mode, the controller 6 controls the rotating unit 348 to start. The motor 3481 of the rotating unit 348 drives the hollow cylinder 3482 to rotate, and the inclined guide groove 3483 on the outer wall of the hollow cylinder 3482 rotates synchronously. Since the insertion rod 349 is inserted into the inner cavity of the guide groove 3483, the inclined structure of the guide groove 3483 generates a forward and backward thrust on the insertion rod 349 during the rotation, causing the insertion rod 349 to drive the rack 346 to make a reciprocating linear motion along the rectangular guide rod 345. During the reciprocating motion, the right tooth surface of the rack 346 meshes with each of the second gears 344, driving all the second gears 344 to rotate synchronously in both directions, thereby driving the louvers 33 connected to the second gears 344 to swing back and forth, realizing the dynamic adjustment of the ventilation direction of the factory and eliminating dead corners in the exhaust.

[0032] At the same time, the teeth 347 on the left side wall of the rack 346 mesh with the first gear 343 for transmission. Since the number of teeth of the second gear 344 is more than three times that of the first gear 343, the linear motion speed of the rack 346 is amplified when it is converted into the rotational angular velocity of the first gear 343. The first rotating shaft 342 rotates synchronously at high speed with the first gear 343.

[0033] When the equipment switches to the air separation and impurity removal mode, the controller 6 controls the electromagnetic coupling to lock, and the rotational power of the first rotating shaft 342 is transmitted to the second rotating shaft 754 through the electromagnetic coupling, providing power to the material diffusion component 75 of the air separation mechanism 7, so as to realize the shaking diffusion and impurity removal of the material.

[0034] Throughout the entire movement, the rectangular guide rod 345 always restricts the rotation of the rack 346, ensuring the meshing stability of the rack 346 with the second gear 344 and the first gear 343. The cylindrical insert rod 349 adapts to the angle change of the guide groove 3483, ensuring the smooth and reliable transmission process. Ultimately, the single component 34 drives the louver 33 to change direction and provides wind separation power, achieving efficient adaptation of dual functions.

[0035] As a preferred embodiment, the air classifier 7 further includes an air classifier box 71. A second gas collecting hood 72 is installed on the top left side of the air classifier box 71. The left end of the second gas collecting hood 72 is connected to the air pipe 4. The second gas collecting hood 72 expands the air intake area of ​​the air classifier box 71. A funnel 73 is installed on the top of the air classifier box 71. A valve is provided at the bottom of the funnel 73. The valve adjusts the feed rate. A collection box 74 is placed at the bottom of the inner cavity of the air classifier box 71. The collection box 74 is used to collect the material after impurity removal. A material diffusion component 75 is installed on the top of the inner cavity of the air classifier box 71.

[0036] As a preferred embodiment, the material diffusion assembly 75 further includes two sliding rods 751 installed inside the air separator 71. A sliding seat 752 is slidably connected to the middle of the outer wall of each sliding rod 751. The sliding rods 751 are horizontally positioned, allowing the sliding seat 752 to drive the screen plate 753 to move horizontally. Two screen plates 753 are horizontally installed at the upper and lower ends of the right side wall of the sliding seat 752. The screen plates 753 act as interceptors for the material, allowing it to diffuse through the mesh of the screen plates 753. The screen plates 753 are connected to the sliding seat 752 via snap-fit ​​connections. Screen plates 753 with various apertures are made according to the material particle size. Selecting a screen plate 753 based on the particle size allows it to diffuse the material, making it suitable for screening materials of various particle sizes. A bearing is installed on the left end of the upper surface of the air separator 71. The second rotating shaft 754 is locked at its top end to the bottom end of the first rotating shaft 342 via an electromagnetic coupling. The electromagnetic coupling is electrically connected to the controller 6, controlling the linkage and separation of the first rotating shaft 342 and the second rotating shaft 754. A swing rod 755 is installed at the bottom end of the second rotating shaft 754. A groove 756 is opened on the outer wall of the swing rod 755. A roller 757 is installed at the top end of the slide block 752, which is inserted into the inner cavity of the groove 756. By moving the roller 757 back and forth with the swing rod 755, the slide block 752 can swing back and forth. Combined with the linkage swing structure controlled by the electromagnetic coupling, the screen plate 753 can swing back and forth smoothly, which not only ensures that the material is fully diffused and does not accumulate, but also improves the thoroughness of impurity removal for different materials, achieving a balance between adaptability and high efficiency in impurity removal.

[0037] When the equipment needs to remove impurities from materials through air separation, the operator first replaces the sieve plate 753 with a suitable aperture by disassembling and replacing it according to the particle size of the material to be processed. Then, the material to be removed is poured into the funnel 73, and the valve at the bottom of the funnel 73 is adjusted to the appropriate feed rate. After receiving the air separation mode command, the controller 6 controls the three-way valve 2 to switch the connection state, closes the connection branch with the heat absorption mechanism 3, and connects the connection branch with the air pipe 4. At the same time, it controls the electromagnetic coupling to be energized and locked, so that the first rotating shaft 342 and the second rotating shaft 754 are linked. The negative pressure fan 1 starts to generate negative pressure suction. This suction is transmitted to the second gas collection hood 72 through the air pipe 4, so that a stable negative pressure environment is formed in the inner cavity of the air separation box 71. The trumpet-shaped structure of the second gas collection hood 72 expands the negative pressure adsorption range, ensuring that impurities can be effectively captured.

[0038] At the same time, the rotating unit 348 of the rotating assembly 34 is activated, driving the rack 346 to slide back and forth along the guide rod 345. The rack 346 meshes with the first gear 343 through the teeth 347, driving the first rotating shaft 342 to rotate. The first rotating shaft 342 transmits the rotational power to the second rotating shaft 754 through an electromagnetic coupling, causing the second rotating shaft 754 to rotate synchronously. The second rotating shaft 754 drives the rocker arm 755 to swing in a circular motion. The sliding groove 756 on the rocker arm 755 slides relative to the roller 757 at the top of the slide block 752. Because the slide block 752 is restricted by the two horizontal slide rods 751, it can only move in the horizontal direction. Therefore, the circular swing of the swing rod 755 is converted into the back-and-forth linear motion of the slide block 752 along the slide rods 751, which in turn drives the two screen plates 753 to shake synchronously and smoothly. The material in the funnel 73 falls continuously to the upper screen plate 753 through the valve. The shaking screen plate 753 plays a role in blocking and dispersing the material. After the material is fully diffused through the mesh of the screen plate 753, it falls downward in a dispersed manner, avoiding the accumulation of material particles and the falling of impurities.

[0039] During the material dispersion and falling process, due to the weight difference between the material particles and dust and light impurities, the negative pressure suction generated by the negative pressure fan 1 sucks away the light impurities through the second air collection hood 72 and discharges them through the air pipe 4 and three-way valve 2 from the negative pressure fan 1, while the heavier pure material particles continue to fall and eventually fall into the collection box 74 at the bottom of the air classifier box 71; when all the materials have been processed, the controller 6 controls the negative pressure fan 1 and the rotating unit 348 to stop running, the electromagnetic coupling is de-energized and separated, and the staff can pull out the collection box 74 to complete the collection and transfer of pure materials.

[0040] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0041] Step 1: When the first gas collection hood 32 is connected to the negative pressure fan 1, the electronic thermometer 5 monitors the temperature inside the factory. If overheating occurs, the controller 6 starts the negative pressure fan 1 and the motor 3481. The suction force generated by the negative pressure fan 1 is transmitted to the first gas collection hood 32. The motor 3481 drives the hollow cylinder 3482 to rotate. The guide groove 3483 presses the insert rod 349 back and forth on the inclined front, causing the rack 346 to slide back and forth along the guide rod 345. Under the transmission condition of the rack 346 and the second gear 344, the louver 33 swings back and forth, changing the air intake direction of the factory, exhausting the factory without dead corners, realizing the overall cooling of the factory and avoiding the problem of local high temperature.

[0042] Step 2: During material air separation, the three-way valve 2 closes the first air collecting hood 32 and opens the air pipe 4, creating negative pressure in the second air collecting hood 72. The electromagnetic coupling connects the first rotating shaft 342 and the second rotating shaft 754. The rack 346 and the first gear 343 drive the swing rod 755 to swing back and forth. When the roller 757 slides in the chute 756, the swing rod 755 moves the slide block 752 back and forth, causing the screen plate 753 to shake back and forth. The material falling from the funnel 73 lands on the screen plate 753, which filters the material, ensuring that no material spreads before falling. When the material falls without accumulating, the negative pressure suction removes the dust and other impurities hidden in the material, taking advantage of the difference in mass between the material particles and dust and other impurities.

[0043] Step 3: Replace the sieve plate 753 with the required particle size according to the particle size of the material. Ensure that the material is spread out by the sieve plate 753 before falling, to prevent dust and other impurities from being trapped in the material and to improve the impurity removal effect.

[0044] The basic principles, main features, and advantages of the present invention have been described above. However, the above description is only a specific embodiment of the present invention, and the technical features of the present invention are not limited thereto. Any other embodiments derived by those skilled in the art without departing from the technical solution of the present invention should be covered within the patent scope of the present invention.

[0045] In the description of this invention, each embodiment focuses on its differences from other embodiments, and similar or identical parts between embodiments can be referred to interchangeably. As the apparatus disclosed in the embodiments corresponds to the methods disclosed in the embodiments, the description is relatively simple, and relevant parts can be referred to the method section.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent ventilation fan for industrial production, comprising a negative pressure fan (1) and a three-way valve (2), wherein the three-way valve (2) is installed on the right side wall of the negative pressure fan (1), and the suction force of the negative pressure fan (1) can create a negative pressure state inside the three-way valve (2), characterized in that, The three-way valve (2) has a heat absorption mechanism (3) and an air pipe (4) installed on one end of each of its two branches. The heat absorption mechanism (3) has an electronic thermometer (5) and a controller (6) installed on its front top and bottom ends respectively. The controller (6) is electrically connected to the electronic thermometer (5), the negative pressure fan (1) and the three-way valve (2). The electronic thermometer (5) monitors the temperature inside the factory. When the temperature inside the factory exceeds the limit, the controller (6) starts the negative pressure fan (1) to improve the air permeability inside the factory and achieve intelligent ventilation and cooling. The other end of the air pipe (4) is equipped with a wind separation mechanism (7). The three-way valve (2) can control the negative pressure fan (1) to connect with the heat absorption mechanism (3) or the wind separation mechanism (7). The wind separation mechanism (7) uses the heat absorption mechanism (3) as power and uses negative pressure to suck away impurities in the material to achieve wind separation of the material. The heat absorption mechanism (3) includes a housing (31), a first gas collection hood (32) is installed on the left side wall of the housing (31), and the left end of the first gas collection hood (32) is installed with the right end of the three-way valve (2). Several louvers (33) are installed from front to back at the bottom of the inner cavity of the housing (31) through bearings. A rotating assembly (34) is installed on the lower surface of the housing (31), and the louvers (33) are driven to swing synchronously by the rotating assembly (34). The rotating assembly (34) includes a base (341) mounted on the lower surface of the housing (31). A first rotating shaft (342) is mounted on the middle left side of the inner cavity of the base (341) via a bearing. A first gear (343) is mounted on the top of the outer wall of the first rotating shaft (342). Several second gears (344) are mounted on the right side of the inner cavity of the base (341) from front to back via pins. The second gears (344) are mounted to the bottom end of the louvers (33). A guide rod (345) is mounted in the middle of the inner cavity of the base (341) along the front-back direction. The outer wall of the guide rod (345) A rack (346) is slidably connected to mesh with the second gear (344). The outer wall of the guide rod (345) is rectangular to prevent the rack (346) from rotating and to maintain a stable transmission effect between the rack (346) and the second gear (344). Several teeth (347) that mesh with the first gear (343) are installed from front to back on the middle of the left side wall of the rack (346). A rotating unit (348) is installed on the left side of the inner cavity of the base (341). A plug rod (349) that is inserted into the rotating unit (348) is installed on the front end of the left side wall of the rack (346). The rotating unit (348) includes a motor (3481) installed on the left side of the front side of the inner cavity of the base (341). The motor (3481) is electrically connected to the controller (6). A hollow cylinder (3482) is installed at the output end of the motor (3481). A guide groove (3483) is opened on the outer wall of the hollow cylinder (3482), and the insertion rod (349) is inserted into the inner cavity of the guide groove (3483).

2. The intelligent ventilation fan for industrial production according to claim 1, characterized in that, The number of teeth of the second gear (344) is more than three times the number of teeth of the first gear (343).

3. The intelligent ventilation fan for industrial production according to claim 2, characterized in that, The guide grooves (3483) are inclinedly distributed on the outer wall of the hollow cylinder (3482) with their ends connected.

4. The intelligent ventilation fan for industrial production according to claim 3, characterized in that, The air separation mechanism (7) includes an air separation box (71). A second gas collecting hood (72) is installed on the top left end of the air separation box (71). The left end of the second gas collecting hood (72) is connected to the air pipe (4). The second gas collecting hood (72) expands the air intake area of ​​the air separation box (71). A funnel (73) is installed on the top of the air separation box (71). A valve is provided at the bottom of the funnel (73). The valve adjusts the feed rate. A collection box (74) is placed at the bottom of the inner cavity of the air separation box (71). The collection box (74) is used to collect the material after impurity removal. A material diffusion component (75) is installed on the top of the inner cavity of the air separation box (71).

5. The intelligent ventilation fan for industrial production according to claim 4, characterized in that, The material diffusion assembly (75) includes two sliding rods (751) installed inside the air classifier (71). A sliding seat (752) is slidably connected to the middle of the outer wall of the sliding rods (751). Two screen plates (753) are horizontally installed at the upper and lower ends of the right side wall of the sliding seat (752). The screen plates (753) act as a barrier to the material, allowing the material to diffuse through the mesh of the screen plates (753). A second rotating shaft (754) is installed on the left end of the upper surface of the air classifier (71) via a bearing. The top end of the second rotating shaft (754) is locked to the bottom end of the first rotating shaft (342) by an electromagnetic coupling. The electromagnetic coupling is electrically connected to the controller (6) to control the linkage and separation of the first rotating shaft (342) and the second rotating shaft (754). A rocker arm (755) is installed at the bottom end of the second rotating shaft (754). A groove (756) is opened on the outer wall of the rocker arm (755). A roller (757) is installed at the top end of the slide block (752) and is inserted into the inner cavity of the groove (756).

6. The intelligent ventilation fan for industrial production according to claim 5, characterized in that, The sieve plate (753) and the slide (752) are connected by a snap fastener, and the sieve plate (753) is made with a variety of apertures according to the particle size of the material.

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