Dynamic physical interception efficient oil fume purification integrated machine set

Abstract

This invention proposes a dynamic physical interception high-efficiency oil fume purification integrated unit, relating to the field of oil fume purification. The invention includes a fume hood, with a smoke guide pipe fixedly connected to the upper part of the hood's interior. An interception and extraction component is installed inside the hood. A servo motor is fixedly installed in the middle of an assembly frame, and a first fan blade is fixedly installed at the output end of the servo motor. A second assembled fan blade is slidably installed inside the first fan blade, and second unfolded fan blades are elastically connected to both sides of the second assembled fan blade. A transmission component is installed inside the bottom end of the second unfolded fan blade. This invention uses the extension of the second assembled fan blade, triggered by the amount of oil fume, as the cleaning start signal. Through mechanical linkage and hydraulic assistance, the purification and cleaning actions occur synchronously: the greater the amount of oil fume, the higher the purification intensity, fan blade area, and rotation speed; the stronger the cleaning force, vibration frequency, and scraper pressure, the more effective the purification. Ultimately, it achieves the comprehensive advantages of high-efficiency purification without clogging, automatic cleaning without maintenance, safety, durability, and low energy consumption.

Description

Technical Field

[0001] This invention relates to the field of oil fume purification, specifically a dynamic physical interception high-efficiency oil fume purification integrated unit. Background Technology

[0002] The dynamic physical interception high-efficiency oil fume purification integrated unit is a device used to treat kitchen oil fumes. Its core technology lies in the efficient purification of oil fumes through dynamic physical interception. At the same time, it integrates multiple functions to achieve efficient treatment and purification of oil fumes.

[0003] A search revealed a dynamic physical interception composite oil fume purification integrated machine with application number 201920354061.6. The machine includes a housing, an oil baffle plate fixedly installed at the bottom of the housing, an oil collection trough fixedly installed at the bottom of the oil baffle plate, a partition plate in the middle of the housing, and an oil filter fixedly installed in the middle of the partition plate. The partition plate divides the housing into an oil-blocking chamber and a filtering chamber. An exhaust pipe is fixedly connected to one end of the filtering chamber, and a centrifugal fan is fixedly installed inside the exhaust pipe. At least one oil removal plate is fixedly installed in the filtering chamber. The oil removal plate includes an outer frame, which is fixedly installed inside the filtering chamber, and filter cotton is fixedly connected inside the outer frame. This invention relates to the technical field of oil fume purification devices. This dynamic physical interception composite oil fume purification integrated machine achieves the purpose of thoroughly filtering smoke and dust. Through the oil removal plate, it has a significant blocking and filtering effect on oil fume particles, and by setting up a dust collection box, it achieves efficient filtration of smoke and dust.

[0004] In existing technical solutions, existing equipment usually cannot automatically adjust the purification intensity and cleaning power according to changes in the amount of oil fume; when the amount of oil fume suddenly increases, it cannot increase the fan blade area and speed in time to improve the purification effect, nor can it increase the cleaning power accordingly to prevent filter clogging, making it difficult to adapt to scenarios with large fluctuations in the amount of oil fume, such as catering kitchens. Summary of the Invention

[0005] The purpose of this invention is to provide a dynamic physical interception high-efficiency oil fume purification integrated unit to solve the problems mentioned in the background art and overcome its technical defects.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is: a dynamic physical interception high-efficiency oil fume purification integrated unit, including a fume hood, a smoke guide pipe fixedly connected to the upper part of the inside of the fume hood, an interception and smoke extraction component provided inside the fume hood, the interception and smoke extraction component including an assembly frame fixedly installed on the inner wall of the fume hood, a servo motor fixedly installed at the middle position of the assembly frame, and a first fan blade fixedly installed at the output end of the servo motor; The first fan blade has a second assembled fan blade that is slidably installed inside it. The two sides of the second assembled fan blade are elastically connected to a second unfolded fan blade. The bottom end of the second unfolded fan blade is provided with a transmission component.

[0007] As a further embodiment of the present invention: the smoke-blocking assembly further includes a retraction cavity formed inside the first fan blade, and a retraction spring is fixedly installed inside the retraction cavity, one end of the retraction spring being fixedly connected to the inner end of the second assembled fan blade.

[0008] As a further embodiment of the present invention: the smoke-blocking assembly further includes a collection groove formed on both sides of the second assembled fan blade, and a plurality of retraction springs are fixedly installed inside the collection groove, and the two ends of the retraction springs are respectively fixedly connected to the side wall of the second assembled fan blade and the second unfolded fan blade.

[0009] As a further embodiment of the present invention: a coarse filtration purification component is provided at the bottom of the inner wall of the fume hood, the coarse filtration purification component including a vibration limiting groove formed at the bottom of the inner wall of the fume hood.

[0010] As a further embodiment of the present invention: a filter screen frame is movably installed inside the vibration limiting groove, a plurality of vibration springs are fixedly installed at the upper edge of the filter screen frame, and a coarse filter screen is fixedly installed inside the filter screen frame.

[0011] As a further aspect of the present invention: a purification and cleaning component is provided on the inner wall of the fume hood, the purification and cleaning component including a cleaning scraper attached to the inner wall of the fume hood.

[0012] As a further embodiment of the present invention: the transmission assembly includes a storage and collection groove formed at the bottom of the interior of the second assembled fan blade, a top spring is fixedly installed inside the storage and collection groove, and a transmission guide post is fixedly connected to the bottom of the top spring and slidably installed inside the storage and collection groove.

[0013] As a further embodiment of the present invention: the transmission assembly further includes a transmission pressure column slidably mounted on the filter screen frame, wherein the corresponding ends of the transmission pressure column and the transmission guide column are hemispherical structures.

[0014] As a further embodiment of the present invention: a hydraulic guide cavity is provided inside the filter frame corresponding to the transmission pressure column, and a connecting transmission sleeve column communicating with the hydraulic guide cavity is fixedly installed on the upper end face of the filter frame, and the interior of the connecting transmission sleeve column is a hollow structure.

[0015] As a further embodiment of the present invention: the upper end of the connecting transmission sleeve is fixedly connected to the cleaning scraper, and a hydraulic top groove is provided inside one side of the cleaning scraper, and an auxiliary scraper blade that is slidably connected to the cleaning scraper is installed inside the hydraulic top groove.

[0016] Compared with the prior art, the beneficial effects of the present invention include: The entire structure of this invention requires no additional sensors or electronic control modules. The cleaning start signal is directly triggered by the extension of the second assembled fan blade and the amount of oil fume. Through mechanical linkage and hydraulic assistance, the purification action and the cleaning action occur simultaneously. The greater the amount of oil fume, the higher the purification intensity, the higher the fan blade area and the rotation speed, and the stronger the cleaning force, vibration frequency and scraper pressure. Ultimately, it achieves the comprehensive advantages of high-efficiency purification without clogging, automatic cleaning without maintenance, safety, durability and low energy consumption. It is especially suitable for scenarios such as catering kitchens where the amount of oil fume fluctuates greatly and the requirements for purification stability are high.

[0017] This invention addresses the problem of traditional fixed fan blades being unable to handle varying amounts of cooking fumes. When the kitchen only produces everyday cooking fumes, high speed and large fan blade area are unnecessary; a servo motor simply operates at low speed, and the fumes are adsorbed and purified by the first fan blade. In this case, the small fan blade area and low speed meet basic purification needs while avoiding inefficient energy consumption due to over-powered motors, thus meeting the requirements for low-carbon operation. When the kitchen enters peak cooking hours and a large amount of oil fumes are generated instantly, the basic fan blades alone are insufficient to quickly capture the fumes, easily leading to fumes escaping and incomplete purification. At this time, by increasing the speed of the servo motor and utilizing the mechanical triggering logic of "centrifugal force > retraction spring force", the second assembled fan blade slides out of the retraction chamber, and then the retraction spring pushes the second unfolded fan blade out of the collection slot. The double unfolding action directly expands the effective interception area of ​​the fan blades. At the same time, the high speed brings stronger airflow adsorption and centrifugal separation force. Under the action of centrifugal force, oil fume particles are more easily captured by the fan blades and thrown away from the airflow, greatly increasing the amount of oil fume processed per unit time, avoiding the decrease in purification efficiency under high load, and meeting the stringent environmental emission requirements.

[0018] When the amount of oil fume is small, only the first fan blade works, and there is no compression between the transmission guide column and the transmission pressure column. Vibration cleaning and hydraulic assistance are not activated, avoiding unnecessary energy consumption. When the amount of oil fume is large, the second assembled fan blade extends, the fan blade speed increases, the transmission compression force is enhanced, the liquid pressure in the hydraulic guide cavity is greater, and the scraping force of the auxiliary scraper is stronger. At the same time, the vibration frequency of the cleaning scraper is higher, achieving dynamic adaptation of the greater the amount of oil fume, the stronger the cleaning force. This ensures that the equipment can still maintain a clean state under high-load purification scenarios, avoiding the accumulation of oil stains that affect performance. Attached Figure Description

[0019] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 The schematic diagram shows an overall structural schematic diagram according to one embodiment of the present invention; Figure 2The schematic diagram shows the internal structure of a fume hood according to one embodiment of the present invention; Figure 3 The illustration shows a proposal based on one embodiment of the present invention. Figure 2 A magnified structural diagram of point A in the middle; Figure 4 The schematic diagram shows a structural schematic of a smoke-blocking assembly according to an embodiment of the present invention; Figure 5 The schematic diagram shows the internal structure of the first fan leaf according to an embodiment of the present invention; Figure 6 The schematic diagram shows the internal structure of a second assembled fan blade according to an embodiment of the present invention; Figure 7 The illustration shows a proposal based on one embodiment of the present invention. Figure 6 A magnified structural diagram of point B in the middle section; Figure 8 The schematic diagram shows the internal structure of a filter frame according to an embodiment of the present invention; Figure 9 The illustration shows a proposal based on one embodiment of the present invention. Figure 8 A magnified structural diagram of point C in the middle; The diagram is labeled as follows: 1. Smoke guide pipe; 2. Smoke hood; 3. Smoke interception and extraction assembly; 301. Assembly frame; 302. Servo motor; 303. First fan blade; 304. Second assembled fan blade; 305. Second unfolded fan blade; 306. Collection slot; 307. Contraction chamber; 308. Contraction spring; 309. Contraction spring; 4. Coarse filtration and purification assembly; 401. Filter frame; 402. Vibration spring; 403. Coarse filter; 404. Vibration limiting slot; 5. Purification and cleaning assembly; 501. Cleaning scraper; 502. Hydraulic top groove; 503. Auxiliary scraper; 504. Connecting transmission sleeve; 505. Hydraulic guide cavity; 6. Transmission assembly; 601. Storage and collection slot; 602. Top spring; 603. Transmission guide column; 604. Transmission pressure column. Detailed Implementation

[0020] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0021] An embodiment of the present invention is shown in conjunction with the accompanying drawings. Please see Figure 1 , Figure 2 , Figure 5 and Figure 6 A dynamic physical interception high-efficiency oil fume purification integrated unit includes a fume hood 2. A smoke guide pipe 1 is fixedly connected to the upper interior of the fume hood 2. An interception and extraction assembly 3 is installed inside the fume hood 2. The interception and extraction assembly 3 includes an assembly frame 301 fixedly installed on the inner wall of the fume hood 2. A servo motor 302 is fixedly installed at the middle position of the assembly frame 301. A first fan blade 303 is fixedly installed at the output end of the servo motor 302. A second assembled fan blade 304 is slidably installed inside the first fan blade 303. Second unfolded fan blades 305 are elastically connected to both sides of the second assembled fan blade 304. A transmission assembly 6 is provided inside the bottom end of the open fan blade 305. The smoke-blocking and smoke-extraction assembly 3 also includes a retraction cavity 307 opened inside the first fan blade 303. A retraction spring 308 is fixedly installed inside the retraction cavity 307. One end of the retraction spring 308 is fixedly connected to the inner end of the second assembled fan blade 304. The smoke-blocking and smoke-extraction assembly 3 also includes a collection groove 306 opened on both sides of the second assembled fan blade 304. A plurality of retraction springs 309 are fixedly installed inside the collection groove 306. The two ends of the retraction springs 309 are fixedly connected to the side walls of the second assembled fan blade 304 and the second open fan blade 305, respectively.

[0022] By adopting the above technical solution, the unit is used according to the amount of oil fume generated in the kitchen. Under normal oil fume conditions, the servo motor 302 inside the fume hood 2 is activated. The servo motor 302 drives the first blade 303 to rotate, thereby adsorbing and purifying the oil fume. The adsorbed oil fume can be discharged from the smoke guide pipe 1. When a large amount of oil fume is generated in the kitchen and a higher purification effect is required, the speed of the servo motor 302 is increased. This allows the first blade 303 to rotate at a higher speed, thus generating a larger centrifugal force at the first blade 303. When the centrifugal force exceeds the elastic force of the retraction spring 308, the second assembled fan blade 304 can slide out of the retraction cavity 307 through the guide. When the second assembled fan blade 304 slides out of the retraction cavity 307, the second unfolded fan blade 305 on the second assembled fan blade 304 will slide out from the receiving grooves 306 on both sides of the second assembled fan blade 304 under the elastic push of the retraction spring 309. This increases the area of ​​the entire rotating fan blade, thereby improving the adsorption effect of oil fumes. Therefore, it solves the problem that the fixed fan blades of traditional units cannot match the varying amount of oil fumes. When the kitchen only produces daily cooking fumes, high speed and large fan blade area are not required. Only the servo motor 302 is started at low speed, and the oil fume adsorption and purification can be completed by the first fan blade 303. At this time, the fan blade area is small and the speed is low, which can meet the basic purification needs and avoid the ineffective energy consumption of a large motor for a small load, which meets the requirements of low-carbon operation. When the kitchen enters peak cooking hours and a large amount of oil fumes are generated instantly, the basic fan blades alone are insufficient to quickly capture the fumes, easily leading to fumes escaping and incomplete purification. At this time, by increasing the speed of the servo motor 302, the mechanical trigger logic of "centrifugal force > spring force of the retraction spring 308" is used to allow the second assembled fan blade 304 to slide out of the retraction chamber 307. Then, the retraction spring 309 pushes the second unfolded fan blade 305 to pop out of the collection slot 306. The double unfolding action directly expands the effective interception area of ​​the fan blades. At the same time, the high speed brings stronger airflow adsorption and centrifugal separation force. Under the action of centrifugal force, oil fume particles are more easily captured by the fan blades and thrown away from the airflow, greatly increasing the amount of oil fume processed per unit time, avoiding the decrease in purification efficiency under high load, and meeting the stringent environmental emission requirements.

[0023] Specifically, such as Figure 2 , Figure 3 and Figure 4 As shown, a coarse filtration purification component 4 is provided at the bottom of the inner wall of the fume hood 2. The coarse filtration purification component 4 includes a vibration limiting groove 404 formed at the bottom of the inner wall of the fume hood 2. A filter screen frame 401 is movably installed inside the vibration limiting groove 404. A plurality of vibration springs 402 are fixedly installed at the upper edge of the filter screen frame 401. A coarse filter screen 403 is fixedly installed inside the filter screen frame 401.

[0024] Specifically, such as Figure 7 and Figure 8As shown, the transmission assembly 6 includes a storage and collection groove 601 formed at the bottom of the second assembly fan blade 304. A top spring 602 is fixedly installed inside the storage and collection groove 601. A transmission guide post 603, which is slidably installed inside the storage and collection groove 601, is fixedly connected to the bottom end of the top spring 602. The transmission assembly 6 also includes a transmission pressure post 604 slidably installed on the filter frame 401. The corresponding ends of the transmission pressure post 604 and the transmission guide post 603 are hemispherical structures. Specifically, such as Figure 3 , Figure 8 and Figure 9 As shown, a purification and cleaning component 5 is provided on the inner wall of the fume hood 2. The purification and cleaning component 5 includes a cleaning scraper 501 that is attached to the inner wall of the fume hood 2. A hydraulic guide cavity 505 is provided inside the filter frame 401 at a position corresponding to the transmission pressure column 604. A connecting transmission sleeve 504 that communicates with the hydraulic guide cavity 505 is fixedly installed on the upper end face of the filter frame 401. The interior of the connecting transmission sleeve 504 is a hollow structure. The upper end of the connecting transmission sleeve 504 is fixedly connected to the cleaning scraper 501. A hydraulic top groove 502 is provided inside one side of the cleaning scraper 501. An auxiliary scraper 503 that is slidably connected to the cleaning scraper 501 is installed inside the hydraulic top groove 502.

[0025] By adopting the above technical solution, when the second assembled fan blade 304 slides out of the drawing cavity 307 through the guide member, under the elastic action of the top spring 602, the transmission guide post 603 can slide out of the storage collection tank 601. Thus, when the second assembled fan blade 304 rotates, it can collide with the transmission pressure post 604 through the extended transmission guide post 603. When the transmission guide post 603 presses against the transmission pressure post 604, the transmission pressure post 604 can slide and press against the filter screen frame 401 into the hydraulic guide cavity 505. This allows the transmission pressure post 604 to press against the liquid inside the hydraulic guide cavity 505. When the transmission pressure post 604 presses into the hydraulic guide cavity 505 to a sufficient depth, it can press downwards against the filter screen frame 401, causing the filter screen frame 401 to move downwards. This allows the filter screen frame 401 to... 01 moves downward in the vibration limiting groove 404. When the filter frame 401 moves downward, it pulls the vibration spring 402 downward and causes elastic deformation. When the second assembly fan blade 304 rotates and the transmission guide post 603 separates from the transmission pressure post 604, the elastically deformed vibration spring 402 pulls the filter frame 401 to vibrate up and down in the vibration limiting groove 404. This causes the coarse filter 403 fixedly installed inside the filter frame 401 to vibrate, so that the particles intercepted on the end face of the coarse filter 403 can be vibrated and detached, ensuring the overall filtration effect of the coarse filter 403. The vibration directly causes the particles attached to the end face of the coarse filter 403 to "detach from the screen surface". Without manual disassembly and cleaning, the permeability of the filter can be restored in real time, ensuring that it always maintains a high-efficiency preliminary filtration capacity and avoiding the decrease in purification efficiency due to filter clogging.

[0026] Simultaneously, when the filter frame 401 vibrates up and down, it drives the cleaning scraper 501 to vibrate up and down through the connection of the transmission sleeve 504. The up-and-down movement of the cleaning scraper 501 scrapes and removes the oil fume particles captured and thrown away by the fan blades from the inner wall of the fume hood 2. These oil fume particles then flow down the inner wall of the fume hood 2 and are collected in the oil collection box. When the liquid inside the hydraulic guide cavity 505 is compressed, it is guided into the hydraulic top groove 502 through the hollow transmission sleeve 504. As the amount of oil inside the hydraulic top groove 502 increases, it further compresses the auxiliary scraper 503, enabling the auxiliary scraper 503 to scrape the oil fume particles on the inner wall of the fume hood 2, thus assisting in cleaning. The cleaning scraper 501 cleans the inner wall of the fume hood 2, thereby ensuring a better cleaning effect and preventing large-area adhesion of oil fume particles to the inner wall of the fume hood 2. When the amount of oil fume is small, only the first fan blade 303 works, and there is no squeezing between the transmission guide column 603 and the transmission pressure column 604. Vibration cleaning and hydraulic assistance are not activated, avoiding ineffective energy consumption. When the amount of oil fume is large, the second assembled fan blade 304 extends, the fan blade speed increases, the transmission squeezing force is enhanced, the liquid pressure in the hydraulic guide cavity 505 is greater, and the scraping force of the auxiliary scraper 503 is stronger. At the same time, the vibration frequency of the cleaning scraper 501 is higher, achieving dynamic adaptation of the greater the amount of oil fume, the stronger the cleaning force. This ensures that the equipment can still maintain a clean state under high-load purification scenarios, avoiding the accumulation of oil stains that affect performance.

[0027] During use, the unit is operated according to the amount of oil fume generated in the kitchen. Under normal oil fume conditions, the servo motor 302 inside the fume hood 2 is activated. The servo motor 302 drives the first fan blade 303 to rotate, thereby adsorbing and purifying the oil fume. The adsorbed oil fume can be discharged from the smoke guide pipe 1. When a large amount of oil fume is generated in the kitchen and a higher purification effect is required, the speed of the servo motor 302 is increased. This causes the first fan blade 303 to rotate at a higher speed, which generates a larger centrifugal force at the first fan blade 303. When the centrifugal force exceeds the elastic force of the retraction spring 308, the second fan blade is assembled. 304 can slide out of the retraction cavity 307 through the guide member. When the second assembled fan blade 304 slides out of the retraction cavity 307, the second unfolded fan blade 305 on the second assembled fan blade 304 will slide out of the collection grooves 306 on both sides of the second assembled fan blade 304 under the elastic push of the retraction spring 309, thereby increasing the area of ​​the entire rotating fan blade and thus improving the oil fume adsorption effect. When the second assembled fan blade 304 can slide out of the retraction cavity 307 through the guide member, under the elastic action of the top spring 602, the transmission guide post 603 can slide out of the storage collection groove 601. When the second assembled fan blade 304 rotates, it can collide with the transmission pressure column 604 through the extended transmission guide column 603. When the transmission guide column 603 presses against the transmission pressure column 604, the transmission pressure column 604 can slide and press against the filter screen frame 401 into the hydraulic guide cavity 505. This allows the transmission pressure column 604 to press against the liquid inside the hydraulic guide cavity 505. When the transmission pressure column 604 presses into the hydraulic guide cavity 505 to a sufficient depth, it can press against the filter screen frame 401 downwards, causing the filter screen frame 401 to move downwards. This allows the filter screen to... The filter frame 401 moves downward in the vibration limiting groove 404. When the filter frame 401 moves downward, it pulls the vibration spring 402 downward and causes elastic deformation. When the second assembly fan blade 304 rotates and the transmission guide post 603 separates from the transmission pressure post 604, the elastically deformed vibration spring 402 pulls the filter frame 401 to vibrate up and down in the vibration limiting groove 404. This causes the coarse filter screen 403 fixedly installed inside the filter frame 401 to vibrate, so that the particles intercepted on the end face of the coarse filter screen 403 can vibrate and fall off, ensuring the overall filtration effect of the coarse filter screen 403.

[0028] Meanwhile, when the filter frame 401 vibrates up and down, it can drive the cleaning scraper 501 to vibrate up and down through the connection of the transmission sleeve 504. Through the up and down movement of the cleaning scraper 501, the oil fume particles captured and thrown away by the fan blades and attached to the inner wall of the fume hood 2 can be scraped and removed, allowing the oil fume particles to flow down the inner wall of the fume hood 2 and be collected by the oil collection box. When the liquid inside the hydraulic guide cavity 505 is squeezed, the liquid will be introduced into the interior of the hydraulic top groove 502 through the hollow connecting transmission sleeve 504. When the oil inside the hydraulic top groove 502 increases, it will further squeeze the auxiliary scraper 503, so that the auxiliary scraper 503 can scrape the oil fume particles in the inner wall of the fume hood 2. The auxiliary cleaning scraper 501 cleans the inner wall of the fume hood 2, thereby better ensuring the cleaning effect and preventing large areas of oil fume particles from adhering to the inner wall of the fume hood 2.

[0029] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A dynamic physical interception high-efficiency oil fume purification integrated unit, characterized in that, Includes a smoke hood (2), the upper part of which is fixedly connected to a smoke guide pipe (1), and the smoke hood (2) is provided with a smoke interception and extraction assembly (3). The smoke interception and extraction assembly (3) includes an assembly frame (301) fixedly installed on the inner wall of the smoke hood (2). A servo motor (302) is fixedly installed in the middle position of the assembly frame (301), and a first fan blade (303) is fixedly installed at the output end of the servo motor (302). The first fan blade (303) has a second assembled fan blade (304) slidably installed inside. The second assembled fan blade (304) has a second unfolded fan blade (305) elastically connected to both sides. The bottom end of the second unfolded fan blade (305) is provided with a transmission component (6).

2. The integrated unit for dynamic physical interception and high-efficiency oil fume purification according to claim 1, characterized in that, The smoke-blocking assembly (3) also includes a retraction cavity (307) opened inside the first fan blade (303), and a retraction spring (308) is fixedly installed inside the retraction cavity (307). One end of the retraction spring (308) is fixedly connected to the inner end of the second assembled fan blade (304).

3. The integrated unit for dynamic physical interception and high-efficiency oil fume purification according to claim 2, characterized in that, The smoke-blocking assembly (3) also includes a collection groove (306) on both sides of the second assembled fan blade (304). Multiple retraction springs (309) are fixedly installed inside the collection groove (306). The two ends of the retraction springs (309) are fixedly connected to the side walls of the second assembled fan blade (304) and the second unfolded fan blade (305), respectively.

4. The integrated unit for dynamic physical interception and high-efficiency oil fume purification according to claim 3, characterized in that, The bottom of the inner wall of the fume hood (2) is provided with a coarse filtration purification component (4), which includes a vibration limiting groove (404) opened at the bottom of the inner wall of the fume hood (2).

5. The integrated unit for dynamic physical interception and high-efficiency oil fume purification according to claim 4, characterized in that, A filter screen frame (401) is movably installed inside the vibration limiting groove (404). Multiple vibration springs (402) are fixedly installed at the upper edge of the filter screen frame (401). A coarse filter screen (403) is fixedly installed inside the filter screen frame (401).

6. The integrated unit for dynamic physical interception and high-efficiency oil fume purification according to claim 5, characterized in that, The inner wall of the fume hood (2) is provided with a purification and cleaning component (5), which includes a cleaning scraper (501) attached to the inner wall of the fume hood (2).

7. The integrated unit for dynamic physical interception and high-efficiency oil fume purification according to claim 6, characterized in that, The transmission assembly (6) includes a storage collection groove (601) opened at the bottom of the second assembly fan blade (304), a top spring (602) is fixedly installed inside the storage collection groove (601), and a transmission guide post (603) is fixedly connected to the bottom of the top spring (602) and slidably installed inside the storage collection groove (601).

8. The integrated unit for dynamic physical interception and high-efficiency oil fume purification according to claim 7, characterized in that, The transmission assembly (6) further includes a transmission pressure column (604) that is slidably mounted on the filter frame (401), and the corresponding ends of the transmission pressure column (604) and the transmission guide column (603) are hemispherical structures.

9. The integrated unit for dynamic physical interception and high-efficiency oil fume purification according to claim 8, characterized in that, The filter frame (401) has a hydraulic guide cavity (505) corresponding to the transmission pressure column (604) inside. A connecting transmission sleeve (504) communicating with the hydraulic guide cavity (505) is fixedly installed on the upper end face of the filter frame (401). The interior of the connecting transmission sleeve (504) is a hollow structure.

10. The integrated unit for dynamic physical interception and high-efficiency oil fume purification according to claim 9, characterized in that, The upper end of the connecting transmission sleeve (504) is fixedly connected to the cleaning scraper (501). A hydraulic top groove (502) is provided inside one side of the cleaning scraper (501). An auxiliary scraper (503) that is slidably connected to the cleaning scraper (501) is installed inside the hydraulic top groove (502).

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