Laminar flow hood for air filtration and purification and method of using the same

Abstract

The present invention relates to the field of air filtration technology, specifically a laminar flow hood for air filtration and purification treatment and a method for using the same, comprising a filter box and a plurality of cylindrical filter elements rotatably connected thereto and used to purify the air, and further comprising: exhaust blades, which are arranged inside the plurality of cylindrical filter elements for guiding the flow direction of the gas, and a drive assembly for driving the exhaust blades to rotate is provided inside the filter box; an air intake shell, which is arranged inside the filter box and has a scraper on one side thereof for cleaning the cylindrical filter element, and a collection assembly for storing dust on the surface of the cylindrical filter element is provided at both ends of the air intake shell, and the collection assembly cooperates with the drive assembly to manipulate the movement of the scraper; a water tank, which is arranged inside the filter box and stores pure water therein, and a humidification assembly is provided inside the water tank for controlling the humidity inside the filter box. The humidification assembly, the electrostatic derivation mechanism and the cleaning mechanism cooperate with each other to form a complete air purification system.

Description

Technical Field

[0001] The invention relates to the technical field of air filtration, in particular to a laminar flow hood for air filtration and purification and a use method thereof. Background Art

[0002] In modern industry, healthcare, scientific research, and other fields, the demand for air cleanliness is becoming increasingly stringent. Traditional air purification methods often fail to meet the cleanliness requirements in certain environments. Therefore, laminar flow hoods, also known as clean laminar flow hoods or purified laminar flow hoods, have emerged as a highly efficient, localized air purification device. Laminar flow hoods, also known as clean laminar flow hoods or purified laminar flow hoods, are air purification devices that can provide a localized clean environment. Their operating principle is based on the laminar flow principle, which directs the air in the work area through a high-efficiency filter at a uniform speed, resulting in a vertical, unidirectional flow within the clean work area, thereby ensuring the required high cleanliness level within the work area.

[0003] For example, patent document CN221846445U discloses an airflow guiding laminar flow hood, which relates to the technical field of laminar flow hoods. The invention aims to solve the problem of dust entering the air inlet and accumulating on the filter screen when the laminar flow hood is not used for a long time. The key points of the technical solution are as follows: the airflow guiding laminar flow hood comprises a laminar flow hood body, the top surface of the laminar flow hood body is provided with an air inlet, the top surface of the laminar flow hood body is slidably connected to a dustproof cloth that is detachably connected to the air inlet, one end of the dustproof cloth is fixedly connected to a plurality of pull ropes fixedly connected to the top surface of the laminar flow hood body, the other end of the pull ropes passes around the dustproof cloth and is slidably connected to the laminar flow hood body, and the end of the pull ropes away from the dustproof cloth is fixedly connected to a drive block, the distance between the drive block and the ground is proportional to the contact area between the dustproof cloth and the air inlet. When the laminar flow hood is not in use, the dustproof cloth slides above the air inlet to block it, preventing dust from entering the laminar flow hood and enhancing its cleaning effect during normal use.

[0004] In the prior art, laminar flow hoods typically cover the air inlet with a dustproof cloth to prevent dust from entering when not in use. However, in actual use, laminar flow hoods are widely used in a variety of air environments, from humid coastal areas to dry deserts. In areas with low relative humidity and extremely dry air, laminar flow hoods ingest large amounts of dry gases during operation. These gases often contain subtle electrostatic charges. As they pass through the laminar flow hood's filtration system, they inevitably come into contact with the filter element, transferring static electricity to the filter element. The accumulation of static electricity has a significant impact on the filter element. On the one hand, it interferes with the filter element's normal filtration mechanism, allowing tiny particles that should have been effectively intercepted to escape, thereby reducing filtration efficiency. On the other hand, static electricity can also cause physical changes in the filter element material, such as electrostatic repulsion between fibers, resulting in a loose filter structure and further weakening its filtration performance. Therefore, in dry environments, the filtration effectiveness of laminar flow hoods can be significantly reduced, failing to meet the stringent requirements for air cleanliness. To this end, the present application proposes a laminar flow hood for air filtration and purification and a method for its use. Summary of the Invention

[0005] The object of the present invention is to provide a laminar flow hood for air filtration and purification and a method of using the same, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a laminar flow hood for air filtration and purification, comprising a filter box and a plurality of cylindrical filter elements rotatably connected thereto and used for purifying air, and further comprising:

[0007] Exhaust blades are arranged inside the multiple cylindrical filter elements to guide the flow of gas, and a drive assembly for driving the exhaust blades to rotate is provided inside the filter box;

[0008] The air suction shell is arranged inside the filter box and has a scraper on one side for cleaning the cylindrical filter element. Both ends of the air suction shell are provided with a collection assembly for storing dust on the surface of the cylindrical filter element. The collection assembly cooperates with the drive assembly to control the movement of the scraper.

[0009] A water tank is arranged inside the filter box and stores pure water therein. A humidifying component is arranged inside the water tank for controlling the humidity inside the filter box.

[0010] Preferably, the drive assembly includes a rotating rod rotatably connected to the inside of the filter box and used to fix multiple exhaust blades, the top of the rotating rod is fixedly connected to a gear, the inside of the cylindrical filter element is fixedly connected to an inner disc tooth, the inside of the filter box is rotatably connected to a reduction gear meshing with the gear, and the top of the reduction gear is fixedly connected to teeth that can adapt to the inner disc teeth.

[0011] Preferably, the bottom of the filter box is fixedly connected to a drive motor, and the output end of the drive motor is fixedly connected to a connecting shaft extending to the inside of the filter box, the outer surface of the connecting shaft is fixedly connected to a driving gear, and the interior of the filter box is rotatably connected to a plurality of rotating gear housings meshing with the driving gear, the interiors of the plurality of rotating gear housings are fixedly connected to support plates, and the rotating rod is fixedly connected to the inside of the support plates.

[0012] Preferably, the collecting assembly includes a dust collection orifice plate fixedly connected to both ends of the air intake shell, and the interior of the air intake shell is slidably connected to a staggered orifice plate adapted to the dust collection orifice plate, the top of the staggered orifice plate is fixedly connected to a ball extending to the top of the air intake shell, the outer surface of the cylindrical filter element is fixedly connected to a multi-section inclined groove plate adapted to the ball, and the interior of the air intake shell is fixedly connected to a tension spring fixedly connected to the staggered orifice plate, and the interior of the air intake shell is fixedly connected to a filter screen.

[0013] Preferably, one side of the air intake shell is connected to multiple side tubes, and the multiple side tubes are respectively connected to air cylinders, the multiple air cylinders are commonly connected to a fixed plate, and one side of the scraper is fixedly connected to multiple piston spring rods with piston ends placed inside the air cylinders.

[0014] Preferably, the outer surfaces of the plurality of air cylinders are provided with drain ports, and the plurality of air cylinders are provided with piston plates adapted thereto. The interior of the air cylinder is fixedly connected to a support handle, and one end of the support handle is rotatably connected to a crank rotatably connected to the piston plate.

[0015] Preferably, the outer surface of the coupling is provided with a sleeve, the top of the sleeve is connected to an intake pipe connected to the intake shell, the outer surface of the coupling located inside the sleeve is evenly fixedly connected to a plurality of auxiliary blades, the inner top of the filter box is fixedly connected to the filter shell, and the top of the coupling extends to the interior of the filter shell and is fixedly connected to the intake blades.

[0016] Preferably, the humidifying assembly includes an exhaust pipe connected to the bottom of the casing, and the exhaust pipe is connected to the water tank. The interior of the water tank is rotatably connected to a small gear that meshes with the driving gear, and the top of the small gear is fixedly connected to a disturbance blade. A plurality of air jet holes are opened on the top of the water tank, the bottom of the scraper is fixedly connected to a metal sheet, and the interior of the filter box is fixedly connected to a grounded metal plate that matches the metal sheet.

[0017] Preferably, an outer shell cover is fixedly connected to the outer surface of the filter box, air inlet filters are provided on both sides of the outer shell cover, and an air outlet groove adapted to multiple cylindrical filter elements is provided at the bottom of the filter box.

[0018] The present invention also provides a method for using a laminar flow hood for air filtration and purification, comprising the following steps:

[0019] S1. When using, first place the filter box in the environment where air purification is required;

[0020] S2, then turn on the drive assembly to drive the multiple exhaust blades to rotate, so that suction is generated, allowing the gas to pass smoothly through the cylindrical filter element for filtration;

[0021] S3. At the same time, the driving assembly drives the cylindrical filter element to rotate, and the scraper moves in coordination with the collecting assembly to clean the cylindrical filter element. As the scraper moves in an alternating manner, the suction shell absorbs the dust removed by the air hanging.

[0022] S4. When the drive assembly is running, the pure water stored inside the water tank is disturbed, and the gas passes through the pure water to moisten the gas in the filter box, so that the moisture molecules in the air interact with the charges on the surface of the object, so that the charges are neutralized or transferred, reducing the generation of static electricity.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The installation of multiple cylindrical filter elements significantly improves the efficiency and comprehensiveness of air purification. This means that more air can be processed in the same amount of time, thereby reducing the concentration of pollutants in the air more quickly. The rotating exhaust blades help guide the gas flow, improve the uniformity of gas flow, and ensure that air can be stably filtered through the cylindrical filter element, further enhancing the purification effect. This design ensures the smooth rotation of the exhaust blades, thereby optimizing airflow distribution and avoiding the potential reduction in purification effect caused by airflow turbulence. The coordinated use of reduction gears, gears, and other components enables precise control of the exhaust blade rotation speed, further improving the uniformity of airflow distribution. The air intake filter blocks large particles of dust and other impurities from entering the filter box, thereby reducing the filtration load of the cylindrical filter element and extending its service life. The suction blades rotate inside the filter housing to generate suction, drawing in external air for pre-treatment; the rotation of the exhaust blades further increases the gas flow rate, allowing the filtered air to be quickly discharged, improving the purification efficiency of the entire system.

[0025] 2. By providing a scraper and collection assembly, the surface of the cylindrical filter element can be automatically cleaned. When the staggered orifice plate is misaligned with the dust collection orifice plate, the gas in the suction shell is sucked away through the side pipe, generating suction that pulls the piston spring rod to move, thereby driving the scraper to move and clean the surface of the cylindrical filter element. This design not only improves cleaning efficiency but also avoids the tediousness and cost of manual cleaning. The auxiliary blades rotate inside the casing, continuously drawing air from the interior of the suction shell, providing a power source for the collection assembly. This design fully utilizes the airflow inside the laminar flow hood, realizes the effective conversion and utilization of energy, and improves the energy efficiency of the entire system. The intermittent rotation of the cylindrical filter element is achieved through the precise engagement of the gears, reduction gears, and teeth. This design not only ensures smooth rotation, but also reduces unnecessary energy consumption through intermittent operation, thereby improving cleaning efficiency. The combination of multi-section chute plates and ball bearings enables the cylindrical filter element to move the staggered orifice plates, aligning them with the dust collection orifice plates as it rotates. The suction generated by the suction housing is then drawn into the interior through the dust collection orifice plates, drawing the dust collected by the scraper into the housing. This design not only enhances the cleaning effect but also ensures that dust is effectively collected and processed. The entire cleaning mechanism works in conjunction with the drive assembly to achieve precise control of the scraper's movement. When the cylindrical filter element rotates, the scraper moves synchronously for cleaning; when the cylindrical filter element is stationary, the gas in the suction housing is drawn away, generating suction that pulls the scraper to move. This design not only improves the overall efficiency of the system but also ensures that the various components work together.

[0026] 3. Air drawn into the air intake pipe enters the housing and is discharged into the water tank through the exhaust pipe. Purified water stored in the water tank humidifies the passing air and is discharged through the air jets, thereby increasing the humidity inside the filter box. This design helps suppress static electricity because water molecules in high-humidity air conduct electricity, reducing the accumulation and discharge of static electricity. The agitation blade is connected to the pinion and rotates with the drive gear. As the agitation blade rotates within the water tank, it agitates the purified water, increasing the contact area between the water and the air, thereby accelerating water evaporation. This design improves the efficiency of the humidification assembly and allows the air inside the filter box to reach the desired humidity level more quickly. The metal plate fixed to the bottom of the scraper mates with a grounded metal plate fixed inside the filter box. When the scraper contacts the cylindrical filter element, friction generates a certain amount of static electricity. This static electricity is dissipated through the contact between the metal plate and the grounded metal plate, preventing static electricity accumulation and damage to the equipment. This design ensures the safe operation of the equipment inside the laminar flow hood. The humidification component, static electricity removal mechanism, and cleaning mechanism work together to form a complete air purification system. The cleaning mechanism removes dust from the surface of the cylindrical filter element, while the humidification component regulates the humidity inside the filter box, suppressing the generation of static electricity. Simultaneously, the static electricity removal mechanism prevents damage to the equipment due to static electricity accumulation during the cleaning process. This design enhances the stability and reliability of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 2 Schematic diagram of the cross-sectional structure of the filter box in the present invention;

[0029] Figure 3 This is a structural diagram of the present invention without the filter box;

[0030] Figure 4 Schematic diagram of the structure of the driving gear in the present invention;

[0031] Figure 5 Schematic diagram of the exploded structure of the cylindrical filter element and the exhaust blades in the present invention;

[0032] Figure 6 Schematic diagram of the structure of the gear in the present invention;

[0033] Figure 7 It is a schematic diagram of the cross-sectional structure of the present invention;

[0034] Figure 8 For the present invention Figure 7 A schematic diagram of the structure at center A;

[0035] Figure 9 Schematic diagram of the structure of the air intake shell in the present invention;

[0036] Figure 10 Schematic diagram of the explosion structure of the staggered orifice plate and the dust suction orifice plate in the present invention;

[0037] Figure 11 Schematic diagram of the cross-sectional structure of the side tube in the present invention;

[0038] Figure 12 For the present invention Figure 11 A magnified schematic diagram of the structure at point B in the middle;

[0039] Figure 13 This is a schematic diagram of the cylindrical filter structure of the present invention;

[0040] Figure 14 It is a schematic diagram of the cross-sectional structure of the casing in the present invention.

[0041] In the figure: 100, filter box; 101, outer cover; 102, air inlet filter; 103, cylindrical filter element; 104, air outlet groove; 105, suction blade; 106, filter housing; 200, exhaust blade; 201, rotating gear housing; 202, support plate; 203, driving gear; 204, connecting shaft; 205, driving motor; 206, rotating rod; 207, gear; 208, reduction gear; 209, teeth; 210, inner disc gear; 300, suction housing; 301, sleeve housing; 302, auxiliary blade; 30 3. Intake pipe; 304. Dust suction orifice plate; 305. Filter; 306. Staggered orifice plate; 307. Tension spring; 308. Ball bearing; 309. Multi-section chute plate; 310. Scraper; 311. Fixed plate; 312. Side pipe; 313. Air cylinder; 314. Piston spring rod; 315. Piston plate; 316. Crank; 317. Support handle; 400. Water tank; 401. Pinion; 402. Disturbance blade; 403. Jet hole; 404. Exhaust pipe; 405. Metal sheet; 406. Grounding metal plate. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] Example 1: Please refer to Figure 1 、 Figure 2 as well as Figure 3 The present invention provides a technical solution: a laminar flow hood for air filtration and purification, comprising a filter box 100 and a plurality of cylindrical filter elements 103 rotatably connected thereto and used for purifying air, an outer surface of the filter box 100 is fixedly connected to an outer shell cover 101, both sides of the outer shell cover 101 are provided with an air intake filter 102, and the bottom of the filter box 100 is provided with an air outlet groove 104 adapted to the plurality of cylindrical filter elements 103. By arranging a plurality of cylindrical filter elements 103, the efficiency and comprehensiveness of air purification can be improved, and the air intake filter 102 can block large particles of dust and reduce the filtering load of the cylindrical filter element 103.

[0044] See also Figure 4 、 Figure 5 as well as Figure 6The filter box 100 further includes exhaust blades 200, which are disposed within the plurality of cylindrical filter elements 103 and serve to guide the flow of gas. A drive assembly is provided within the filter box 100 to drive the exhaust blades 200 in rotation. The drive assembly includes a rotating rod 206 that is rotatably connected to the interior of the filter box 100 and is used to secure the plurality of exhaust blades 200. A gear 207 is fixedly connected to the top of the rotating rod 206. An inner disc 210 is fixedly connected to the interior of the cylindrical filter element 103. A reduction gear 208 is rotatably connected to the interior of the filter box 100 and meshes with the gear 207. The top of the reduction gear 208 is fixedly connected to teeth 209 that mate with the inner disc 210. The rotation of the exhaust blades 200 improves the uniform flow of gas, achieving stable air purification and filtration. The precise meshing of the teeth 209 with the inner disc 210 ensures smooth rotation, further optimizing airflow distribution and enhancing purification effectiveness. Furthermore, the effective interception of the air intake filter 102 significantly extends the service life of the cylindrical filter element 103.

[0045] Among them, the bottom of the filter box 100 is fixedly connected to a drive motor 205, and the output end of the drive motor 205 is fixedly connected to a connecting shaft 204 extending to the inside of the filter box 100, and the outer surface of the connecting shaft 204 is fixedly connected to a driving gear 203. The interior of the filter box 100 is rotatably connected to multiple rotating gear housings 201 that mesh with the driving gear 203. The interiors of the multiple rotating gear housings 201 are all fixedly connected to support plates 202, and the rotating rod 206 is fixedly connected to the interior of the support plate 202. The inner top of the filter box 100 is fixedly connected to a filter housing 106, and the top of the connecting shaft 204 extends to the interior of the filter housing 106 and is fixedly connected to the suction blades 105. The filter housing 106 can pre-treat the air, remove some harmful substances, and improve the overall purification effect. The cooperation between the suction blades 105 and the exhaust blades 200 can effectively increase the gas flow rate and achieve efficient exhaust.

[0046] Specifically, when in use, the filter box 100 is first placed in an environment where air purification is required, and then the drive motor 205 is turned on to drive the connecting shaft 204 to rotate and drive the suction blades 105 to rotate inside the filter housing 106, so that its suction force causes the external air to pass through the air inlet filter 102 and enter the interior of the filter housing 106, and then be placed in the interior of the filter box 100 to be filtered through multiple cylindrical filter elements 103, and then be discharged through the air outlet groove 104. When the driving gear 203 rotates, it will drive multiple rotating gear housings 201 to rotate with it, and then drive the rotating rod 206 to rotate, so that the rotating rod 206 drives multiple exhaust blades 200 to rotate, further generating suction force, so that the gas can pass through the cylindrical filter element 103 smoothly for filtration.

[0047] In summary, by providing multiple cylindrical filter elements 103, the efficiency and comprehensiveness of air purification can be significantly improved. This means that in the same amount of time, more air volume can be processed, thereby reducing the concentration of pollutants in the air more quickly. The rotation of the exhaust blades 200 helps to guide the flow of gas, improve the uniform flow of gas, ensure that the air can be stably filtered through the cylindrical filter element 103, and further improve the purification effect. This design ensures the smoothness of the rotation of the exhaust blades 200, thereby optimizing the airflow distribution and avoiding the reduction in purification effect that may be caused by airflow turbulence. Through the coordinated use of components such as the reduction gear 208 and the gear 207, precise control of the rotation speed of the exhaust blades 200 is achieved, further improving the uniformity of the airflow distribution. The air intake filter 102 can prevent large particles of dust and other impurities from entering the filter box 100, thereby reducing the filtration load of the cylindrical filter element 103 and extending its service life. The suction blades 105 rotate inside the filter housing 106 to generate suction, sucking in external air and pre-processing it; and the rotation of the exhaust blades 200 further enhances the gas flow rate, allowing the filtered air to be discharged quickly, thereby improving the purification efficiency of the entire system.

[0048] Example 2: Please refer to Figure 7 、 Figure 8 as well as Figure 9 The present invention also provides a technical solution, which is different from the technical solution of the first embodiment: a laminar flow hood for air filtration and purification, further comprising an air intake shell 300, which is arranged inside the filter box 100 and has a scraper 310 on one side for cleaning the cylindrical filter element 103, and collection components for storing dust on the surface of the cylindrical filter element 103 are provided at both ends of the air intake shell 300, and the collection components cooperate with the driving component to manipulate the scraper 310 to move, and the dust on the surface of the cylindrical filter element 103 can be collected by setting the air intake shell 300, and the scraper 310 can scrape up the dust on the surface of the cylindrical filter element 103 that is about to approach the air intake shell 300 in advance, making it easier for the air intake shell 300 to be sucked away, and the collection component can be provided to effectively clean the cylindrical filter element 103 and ensure the working environment inside the filter box 100, and at the same time, the cooperation between the collection component and the driving component can control the movement of the scraper 310 to improve efficiency.

[0049] See also Figure 10 、 Figure 11 as well as Figure 12Furthermore, the collection assembly includes a dust collection plate 304 fixedly connected to both ends of the air suction shell 300, and the interior of the air suction shell 300 is slidably connected to a staggered plate 306 adapted to the dust collection plate 304, and the top of the staggered plate 306 is fixedly connected to a ball 308 extending to the top of the air suction shell 300, and the outer surface of the cylindrical filter element 103 is fixedly connected to a multi-section inclined groove plate 309 adapted to the ball 308, and the interior of the air suction shell 300 is fixedly connected to the staggered plate 306. The tension spring 307 is fixedly connected to the interior of the air intake shell 300 with a filter screen 305. By setting a multi-section inclined slot plate 309 and cooperating with the ball 308, the staggered hole plate 306 can be intermittently pushed to move and overlap with the dust collection hole plate 304. In this process, when the staggered hole plate 306 overlaps with the dust collection hole plate 304, suction will be generated at both ends of the air intake shell 300 to absorb dust on the surface of the cylindrical filter element 103. At the same time, it cooperates with the rotation of the cylindrical filter element 103 to increase its dust absorption area.

[0050] Among them, one side of the air intake shell 300 is connected to multiple side tubes 312, and the multiple side tubes 312 are respectively connected to the air cylinders 313, and the multiple air cylinders 313 are commonly connected to a fixing plate 311. One side of the scraper 310 is fixedly connected to multiple piston spring rods 314 with piston ends placed inside the air cylinders 313. The outer surfaces of the multiple air cylinders 313 are all provided with drain ports, and the multiple drain ports are all provided with piston plates 315 adapted thereto. The interior of the air cylinder 313 is fixedly connected to a support handle 317, and one end of the support handle 317 is rotatably connected to a crank 316 rotatably connected to the piston plate 315. By providing the side tube 312, when the staggered orifice plate 306 and the dust collection orifice plate 304 are misaligned, the gas in the suction shell 300 can be sucked in through the side tube 312. At this time, the piston spring rod 314 is under force to pull the scraper 310 to move. At the same time, the cylindrical filter element 103 is in a stationary state at this time. As the piston end of the piston spring rod 314 continues to move, it will contact the crank 316 and push the piston plate 315 upward, so that the interior of the air cylinder 313 is connected to the outside world, so that the piston spring rod 314 is quickly reset by the action of its surface spring, thereby contacting the surface of the cylindrical filter element 103 to complete the cleaning process.

[0051] Among them, the outer surface of the connecting shaft 204 is provided with a sleeve 301, and the top of the sleeve 301 is connected to the intake pipe 303 connected to the intake shell 300. The outer surface of the connecting shaft 204 located inside the sleeve 301 is evenly fixed with multiple auxiliary blades 302. By setting the auxiliary blades 302 and the sleeve 301, air can be continuously inhaled from the inside of the intake shell 300 to provide a power source for the collection component.

[0052] Specifically, when the rotating rod 206 rotates, it will drive the gear 207 to rotate, thereby driving the two reduction gears 208 to rotate and change the position of the teeth 209, so that it intermittently engages with the inner disc teeth 210, thereby driving the cylindrical filter element 103 to rotate, so that the cylindrical filter element 103 intermittently rotates to change the position of the multi-section chute plate 309. At the same time, the rotation of the connecting shaft 204 will drive the auxiliary blades 302 to rotate inside the casing 301 and inhale air from the intake pipe 303, so that negative pressure is generated in the intake shell 300, thereby inhaling air from multiple side pipes 312, so that the piston spring rod 314 is forced to move, thereby pulling the scraper 310 to move. As the piston spring rod 314 moves, it will conflict with the crank 316, thereby driving the piston plate 315 to move, so that the air cylinder 313 is connected to the outside. At this time, the external air quickly enters the interior of the air cylinder 313, causing the piston spring rod 314 to lose suction and reset, pushing the scraper 310 to push the surface of the cylindrical filter element 103 to collect and scrape the dust filtered on its surface. At the same time, when the cylindrical filter element 103 rotates, the ball 308 will move on the inclined surface of the multi-section chute plate 309 and move downward to push the staggered orifice plate 306 to move. At this time, the staggered orifice plate 306 coincides with the dust collection orifice plate 304. At this time, the gas will preferentially pass through the dust collection orifice plate 304 and be sucked into the interior of the suction shell 300. At this time, the dust collection orifice plate 304 inhales the dust collected by the scraper 310 into the interior of the suction shell 300 and is blocked by the filter screen 305, thereby completing the local cleaning of the cylindrical filter element 103. With continuous operation, the dust on the surface of the cylindrical filter element 103 will be completely cleaned.

[0053] In summary, by setting the scraper 310 and the collection assembly, the surface of the cylindrical filter element 103 can be automatically cleaned. When the staggered orifice plate 306 is misaligned with the dust collection orifice plate 304, the gas in the suction shell 300 is sucked away through the side pipe 312, generating suction to pull the piston spring rod 314 to move, thereby driving the scraper 310 to move and clean the surface of the cylindrical filter element 103. This design not only improves the cleaning efficiency, but also avoids the tediousness and cost of manual cleaning. The auxiliary blade 302 rotates inside the casing 301, continuously sucking air from the inside of the suction shell 300, providing a power source for the collection assembly. This design makes full use of the airflow inside the laminar flow hood, realizes the effective conversion and utilization of energy, and improves the energy efficiency of the entire system. The intermittent rotation of the cylindrical filter element 103 is achieved through the precise engagement of the gear 207, the reduction gear 208 and the teeth 209. This design not only ensures the smoothness of the rotation, but also reduces unnecessary energy consumption through intermittent work, thereby improving the cleaning efficiency. The cooperation between the multi-section chute plate 309 and the ball bearing 308 enables the cylindrical filter element 103 to push the staggered orifice plate 306 to move and overlap with the dust collection orifice plate 304 when it rotates. At this time, the suction force generated by the suction shell 300 will be sucked into the interior through the dust collection orifice plate 304 first, and the dust collected by the scraper 310 will be sucked into the interior of the suction shell 300. This design not only enhances the cleaning effect, but also ensures that the dust can be effectively collected and processed. The entire cleaning mechanism cooperates with the drive assembly to achieve precise control of the movement of the scraper 310. When the cylindrical filter element 103 rotates, the scraper 310 moves synchronously for cleaning; when the cylindrical filter element 103 is stationary, the gas in the suction shell 300 is sucked away to generate suction to pull the scraper 310 to move. This design not only improves the overall efficiency of the system, but also ensures the coordinated work between the various components.

[0054] Example 3: Please refer to Figure 9 、 Figure 13 as well as Figure 14 The present invention also provides a technical solution, which is different from the technical solution of embodiment 1: a laminar flow hood for air filtration and purification, further comprising a water tank 400, which is arranged inside the filter box 100 and stores pure water therein, and a humidifying component is arranged inside the water tank 400 for controlling the humidity inside the filter box 100, and the humidifying component includes an exhaust pipe 404 connected to the bottom of the shell 301, and the exhaust pipe 404 is connected to the water tank 400, and the interior of the water tank 400 is rotatably connected to a small gear 401 that meshes with the driving gear 203, and the top of the small gear 401 is fixedly connected to a disturbance blade 402, and a plurality of air jet holes 403 are opened on the top of the water tank 400. By setting the humidifying component, the pure water in the water tank 400 can be adsorbed to humidify the air in the filter box 100, thereby suppressing the generation of static electricity, and the disturbance blade 402 can further disturb the pure water to increase the contact area between the gas and the pure water, thereby increasing the evaporation of water.

[0055] Among them, a metal sheet 405 is fixedly connected to the bottom of the scraper 310, and a grounded metal plate 406 adapted to the metal sheet 405 is fixedly connected to the inside of the filter box 100. By setting the cooperation between the metal sheet 405 and the grounded metal plate 406, the static electricity in the scraper 310 and the cylindrical filter element 103 is drawn away. The friction generated by the conflict between the scraper 310 and the cylindrical filter element 103 is prone to generate static electricity, which allows the metal sheet 405 to conflict with the grounded metal plate 406 when the scraper 310 conflicts with the cylindrical filter element 103, thereby transmitting static electricity.

[0056] Specifically, the gas sucked in by the intake pipe 303 will enter the interior of the casing 301 and then be discharged to the interior of the water tank 400 through the exhaust pipe 404. Pure water is stored in the water tank 400. The gas is discharged through the jet hole 403 through the pure water to moisten the gas in the filter box 100. At the same time, the rotation of the driving gear 203 will drive the pinion 401 to rotate and drive the disturbance blade 402 to rotate inside the water tank 400 to disturb the pure water, thereby increasing the contact area between water and air, thereby facilitating the evaporation of water. When the scraper 310 collides with the cylindrical filter element 103, friction will be generated, and this friction will generate a certain amount of static electricity, which will be discharged through the contact between the metal sheet 405 and the grounded metal plate 406.

[0057] In summary, the gas sucked in by the intake pipe 303 will enter the interior of the casing 301 and be discharged into the water tank 400 through the exhaust pipe 404. The pure water stored in the water tank 400 can moisten the passing gas and be discharged through the air jet hole 403, thereby increasing the air humidity inside the filter box 100. This design helps to suppress the generation of static electricity, because the water molecules in the air under high humidity conditions can conduct electricity, reducing the accumulation and discharge of static electricity. The disturbance blade 402 is connected to the pinion 401 and rotates with the rotation of the driving gear 203. When the disturbance blade 402 rotates inside the water tank 400, it can disturb the pure water, increase the contact area between water and air, and thus accelerate the evaporation of water. This design improves the working efficiency of the humidification component, so that the air inside the filter box 100 can reach the required humidity level more quickly. The metal sheet 405 fixed at the bottom of the scraper 310 is adapted to the grounded metal plate 406 fixed inside the filter box 100. When the scraper 310 collides with the cylindrical filter element 103, a certain amount of static electricity will be generated due to the friction. This static electricity will be discharged through the contact between the metal sheet 405 and the grounded metal plate 406, thereby avoiding the accumulation of static electricity and causing damage to the equipment. This design protects the safe operation of the equipment inside the laminar flow hood. The humidification component and the static electricity discharge mechanism cooperate with the cleaning mechanism to form a complete air purification system. The cleaning mechanism is responsible for removing dust from the surface of the cylindrical filter element 103, while the humidification component is responsible for adjusting the humidity inside the filter box 100 and suppressing the generation of static electricity. At the same time, the static electricity discharge mechanism ensures that the equipment will not be damaged due to static electricity accumulation during the cleaning process. This design improves the stability and reliability of the entire system.

[0058] Example 4: Please refer to Figures 1 to 14 The present invention also provides a technical solution, which is different from the technical solution of embodiment 1: a method for using a laminar flow hood for air filtration and purification, comprising the following steps:

[0059] S1. When in use, the filter box 100 is first placed in an environment where air purification is required, and then the drive motor 205 is turned on to drive the coupling shaft 204 to rotate, thereby driving the suction blades 105 to rotate inside the filter housing 106. The suction force causes the external air to pass through the air inlet filter 102 and enter the filter housing 106. The air is then discharged into the filter box 100 and filtered by the multiple cylindrical filter elements 103 before being discharged through the air outlet slot 104.

[0060] S2. When the driving gear 203 rotates, it drives the multiple rotating gear housings 201 to rotate along with it, and then drives the rotating rod 206 to rotate, so that the rotating rod 206 drives the multiple exhaust blades 200 to rotate, further generating suction force so that the gas can pass through the cylindrical filter element 103 smoothly for filtration;

[0061] S3. When the rotating rod 206 rotates, it will drive the gear 207 to rotate, thereby driving the two reduction gears 208 to rotate and change the position of the teeth 209, so that it intermittently engages with the inner disc teeth 210, thereby driving the cylindrical filter element 103 to rotate, so that the cylindrical filter element 103 intermittently rotates to change the position of the multi-section chute plate 309. At the same time, the rotation of the connecting shaft 204 will drive the auxiliary blades 302 to rotate inside the casing 301 and inhale air from the suction pipe 303, so that negative pressure is generated in the suction shell 300, thereby inhaling air from multiple side pipes 312, so that the piston spring rod 314 is forced to move, thereby pulling the scraper 310 to move. As the piston spring rod 314 moves, it will conflict with the crank 316, thereby driving the piston plate 315 to move, so that the air cylinder 313 is connected to the outside. At this time, external air quickly enters the interior of the air cylinder 313, causing the piston spring rod 314 to lose suction and reset, pushing the scraper 310 to push the surface of the cylindrical filter element 103 to collect and scrape the dust filtered on the surface. At the same time, when the cylindrical filter element 103 rotates, the ball 308 will move on the inclined surface of the multi-section chute plate 309 and move downward to push the staggered orifice plate 306 to move. At this time, the staggered orifice plate 306 coincides with the dust suction orifice plate 304. At this time, the air will preferentially pass through the dust suction orifice plate 304 and be sucked into the interior of the suction shell 300. At this time, the dust suction orifice plate 304 inhales the dust scraped together by the scraper 310 and enters the interior of the suction shell 300, where it is blocked by the filter screen 305, thereby completing the local cleaning of the cylindrical filter element 103. As the operation continues, the dust on the surface of the cylindrical filter element 103 will be completely cleaned.

[0062] S4. The gas sucked in by the suction pipe 303 will enter the interior of the casing 301 and then be discharged to the interior of the water tank 400 through the exhaust pipe 404. Pure water is stored in the water tank 400. The gas is discharged through the air jet hole 403 through the pure water to moisten the gas in the filter box 100. At the same time, the rotation of the driving gear 203 will drive the small gear 401 to rotate and drive the disturbance blade 402 to rotate inside the water tank 400 to disturb the pure water, thereby increasing the contact area between water and air, thereby facilitating the evaporation of water. When the scraper 310 collides with the cylindrical filter element 103, friction will be generated. This friction will generate a certain amount of static electricity, which will be discharged through the contact between the metal sheet 405 and the grounded metal plate 406.

[0063] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0064] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A laminar flow hood for air filtration and purification, comprising a filter box (100) and a plurality of cylindrical filter elements (103) rotatably connected thereto and used for purifying air, characterized in that: Also includes: Exhaust blades (200) are arranged inside the plurality of cylindrical filter elements (103) to guide the flow of gas, and a drive assembly for driving the exhaust blades (200) to rotate is provided inside the filter box (100); An air intake housing (300) is arranged inside the filter box (100) and is provided with a scraper (310) on one side thereof for cleaning the cylindrical filter element (103). Collection components for storing dust on the surface of the cylindrical filter element (103) are provided at both ends of the air intake housing (300), and the collection components cooperate with the driving component to manipulate the scraper (310) to move. A water tank (400) is provided inside the filter box (100) and stores pure water therein. A humidifying component is provided inside the water tank (400) for controlling the humidity inside the filter box (100); The driving assembly includes a rotating rod (206) rotatably connected to the interior of the filter box (100) and used to fix a plurality of exhaust blades (200); The bottom of the filter box (100) is fixedly connected to a driving motor (205), and the output end of the driving motor (205) is fixedly connected to a connecting shaft (204) extending into the interior of the filter box (100); the outer surface of the connecting shaft (204) is fixedly connected to a driving gear (203); the interior of the filter box (100) is rotatably connected to a plurality of rotating gear housings (201) meshing with the driving gear (203); the interiors of the plurality of rotating gear housings (201) are fixedly connected to a support plate (202), and the rotating rod (206) is fixedly connected to the interior of the support plate (202); The outer surface of the coupling (204) is provided with a casing (301), the top of the casing (301) is connected to an air intake pipe (303) connected to the air intake housing (300), the outer surface of the coupling (204) located inside the casing (301) is evenly and fixedly connected to a plurality of auxiliary blades (302), the inner top of the filter box (100) is fixedly connected to the filter housing (106), and the top of the coupling (204) extends to the interior of the filter housing (106) and is fixedly connected to the air intake blades (105); The humidifying assembly comprises an exhaust pipe (404) connected to the bottom of the casing (301), and the exhaust pipe (404) is connected to the water tank (400). A small gear (401) meshing with the driving gear (203) is rotatably connected inside the water tank (400), a disturbance blade (402) is fixedly connected to the top of the small gear (401), a plurality of air injection holes (403) are opened on the top of the water tank (400), a metal sheet (405) is fixedly connected to the bottom of the scraper (310), and a grounding metal plate (406) adapted to the metal sheet (405) is fixedly connected to the inside of the filter box (100).

2. The laminar flow hood for air filtration and purification according to claim 1, characterized in that: The top of the rotating rod (206) is fixedly connected to a gear (207), the interior of the cylindrical filter element (103) is fixedly connected to an inner disc tooth (210), the interior of the filter box (100) is rotatably connected to a reduction gear (208) meshing with the gear (207), and the top of the reduction gear (208) is fixedly connected to teeth (209) that can adapt to the inner disc tooth (210).

3. The laminar flow hood for air filtration and purification according to claim 1, characterized in that: The collecting assembly comprises a dust collection orifice plate (304) fixedly connected to both ends of the air intake shell (300), and the interior of the air intake shell (300) is slidably connected to a staggered orifice plate (306) adapted to the dust collection orifice plate (304), the top of the staggered orifice plate (306) is fixedly connected to a ball (308) extending above the air intake shell (300), the outer surface of the cylindrical filter element (103) is fixedly connected to a multi-section inclined groove plate (309) adapted to the ball (308), and the interior of the air intake shell (300) is fixedly connected to a tension spring (307) fixedly connected to the staggered orifice plate (306), and the interior of the air intake shell (300) is fixedly connected to a filter screen (305).

4. The laminar flow hood for air filtration and purification according to claim 3, characterized in that: One side of the air intake shell (300) is connected to a plurality of side tubes (312), and the plurality of side tubes (312) are respectively connected to air cylinders (313). The plurality of air cylinders (313) are commonly connected to a fixed plate (311). One side of the scraper (310) is fixedly connected to a plurality of piston spring rods (314) whose piston ends are placed inside the air cylinders (313).

5. The laminar flow hood for air filtration and purification according to claim 4, characterized in that: The outer surfaces of the plurality of gas cylinders (313) are provided with drain ports, and piston plates (315) adapted thereto are provided in the plurality of gas cylinders (313). A support handle (317) is fixedly connected to the interior of the gas cylinder (313), and one end of the support handle (317) is rotatably connected to a crank (316) rotatably connected to the piston plate (315).

6. The laminar flow hood for air filtration and purification according to claim 1, characterized in that: The outer surface of the filter box (100) is fixedly connected to an outer shell cover (101), air inlet filters (102) are provided on both sides of the outer shell cover (101), and the bottom of the filter box (100) is provided with an air outlet groove (104) adapted to a plurality of cylindrical filter elements (103).

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