Oil-proof cyclone separation device for range hood

Abstract

The oil-proof cyclone separation device comprises an inner air pipe, a separation assembly is arranged on the surface of the inner air pipe, and the separation assembly comprises an upper circular cover fixedly arranged on the surface of the inner air pipe in a sleeving mode and a lower circular cover arranged below the upper circular cover; an annular filter screen is fixedly connected between the lower circular cover and the upper circular cover, the surface of the inner air pipe is fixedly sleeved with a spiral blade, a fan is installed in the inner air pipe, and a gap is reserved between the bottom end of the inner air pipe and the lower circular cover; the centrifugal force and the annular filter screen are utilized to effectively separate grease particles in oil smoke, reduce the grease content of exhausted oil smoke, relieve pollution to kitchens and the atmosphere, automatically clean residual grease on the filter screen and the lower circular cover, reduce the manual cleaning frequency and guarantee stable operation of the device.

Description

Technical Field

[0001] The invention belongs to the technical field of oil fume separation, and in particular relates to an anti-grease cyclone separation device for a range hood. Background Art

[0002] Cooking fumes contain a large number of droplets and solid particles, which can easily cause discomfort when inhaled by the human body, and in severe cases can even lead to disease. Therefore, during the cooking process, a range hood is needed to absorb the fumes under negative pressure, and then purify them before discharging them into the atmosphere. Existing range hoods generally include a housing, with an oil smoke intake port at the bottom of the housing, a fan for providing negative pressure within the housing, an oil filter at the side of the oil smoke intake port, and an oil cup at the bottom of the housing. During use, the fan provides negative pressure to draw oil smoke from the oil smoke intake port, the oil filter liquefies most of the oil smoke drawn in from the oil smoke intake port and stores it in the oil cup, and the remaining oil smoke is discharged outdoors through the air outlet. Although the oil filter can remove most of the oil smoke, during long-term use, the surface of the oil filter will slowly condense oil and dirt, and during long-term use, the oil and dirt will increase and need to be cleaned regularly, which is inconvenient to clean.

[0003] Therefore, a range hood anti-grease cyclone separation device is designed to solve the above problems. Summary of the Invention

[0004] Therefore, in order to solve the above-mentioned deficiencies, the present invention provides a range hood anti-grease cyclone separation device.

[0005] The present invention is achieved by constructing a range hood anti-grease cyclone separation device, comprising an inner air duct; A separation component is provided on the surface of the inner air duct, and the separation component includes an upper circular cover fixedly mounted on the surface of the inner air duct and a lower circular cover arranged below the upper circular cover. An annular filter is fixedly connected between the lower circular cover and the upper circular cover. A spiral blade is fixedly mounted on the surface of the inner air duct. A fan is installed inside the inner air duct, and a gap is left between the bottom end of the inner air duct and the lower circular cover.

[0006] Preferably, the lower circular cover is located inside the circular barrel cover, and a gap is left between the lower circular cover and the circular barrel cover. An external threaded tube is fixedly connected to the circular groove opened at the bottom end of the circular barrel cover, and the external threaded tube is threadedly connected to the threaded hole opened on the upper surface of the storage box.

[0007] Preferably, inner connecting rods in a ring array are fixedly connected between the lower circular cover and the inner air duct, and the outer diameters of the lower circular cover, the annular filter and the upper circular cover are the same.

[0008] Preferably, the spiral blade is located between the upper circular cover and the lower circular cover, and the surface of the spiral blade is in contact with the annular filter screen, and an air inlet hole is provided on the upper surface of the upper circular cover.

[0009] Preferably, a scraping assembly is provided inside the circular cylinder cover, and the scraping assembly includes an inner optical axis arranged inside the inner air duct and a conical bucket sleeved on the surface of the inner optical axis, the inner optical axis and the conical bucket are slidably connected, the bottom end of the inner optical axis is fixedly connected to the lower circular cover, the surface of the conical bucket is symmetrically fixedly connected to two cross bars, the surface of each of the cross bars is fixedly connected to a pull rope, the surface of the lower circular cover is sleeved with an annular scraper, the lower circular cover and the annular scraper are slidably connected, the outer ring of the annular scraper is fixedly connected to an outer connecting rod in a circular array, the end of the pull rope away from the cross rod is fixedly connected to the outer connecting rod, two U-shaped blocks are symmetrically provided inside the inner air duct, and pulley 1 is installed inside each of the U-shaped blocks, the pull rope passes through between the U-shaped block and pulley 1, and the pull rope is located below the cross bar.

[0010] Preferably, the pull rope is located in a through hole opened on the surface of the inner air duct, the pull rope and the inner air duct are slidably connected, a second pulley is installed inside the inner air duct near the through hole, and the pull rope and the second pulley are in contact with each other.

[0011] Preferably, two pulleys three are installed on the upper surface of the upper circular cover, and the pull rope and the pulley three are in contact with each other.

[0012] Preferably, a plurality of carrier blocks are fixedly connected to the surface of the outer ring of the lower circular cover, the carrier blocks are located below the annular scraper, the annular scraper is located inside the circular barrel cover, and the end of the outer connecting rod away from the annular scraper is fixedly connected to the circular barrel cover.

[0013] Preferably, the surface fixing sleeve of the inner optical axis is provided with a lower retaining ring and an upper retaining ring, the conical bucket is located between the lower retaining ring and the upper retaining ring, and the upper retaining ring is located above the lower retaining ring.

[0014] Preferably, a cleaning assembly is provided at the bottom end of the inner air duct, and the cleaning assembly includes two J-shaped plates arranged at the bottom end of the inner air duct and a lower connecting rod fixedly connected to the bottom of the two J-shaped plates, and the bottom end of each of the lower connecting rods is fixedly connected to an isosceles block, and the isosceles block is inserted in an isosceles groove opened on the bottom surface of the lower circular cover, and the two J-shaped plates are symmetrically arranged, and the J-shaped plates are inserted in the square groove opened at the bottom end of the inner air duct, and the J-shaped plate is slidably connected to the inner air duct, and one end of the J-shaped plate is fixedly connected to the U-shaped block, and a T-shaped rod is inserted in the T-shaped groove opened at the other end of the J-shaped plate, and the T-shaped rod is slidably connected to the J-shaped plate, and the top of the T-shaped rod is fixedly connected to the inner air duct.

[0015] The present invention has the following advantages: The present invention provides an anti-grease cyclone separation device for range hoods through improvement, which has the following improvements compared with similar devices: The anti-grease cyclone separation device for a range hood of the present invention is provided with a separation component. When the fan is running, external oil smoke flows into the upper circular cover through the air inlet hole and forms a spiral high-speed rotating airflow under the guidance of the spiral blades. Under the action of centrifugal force, the oil particles in the oil smoke are thrown toward the annular filter screen. The annular filter screen effectively intercepts the oil particles, realizes the preliminary separation of oil and gas, makes the exhaust gas cleaner, and significantly improves the oil separation efficiency of the range hood. The bottom inner wall of the lower circular cover is arc-shaped. This design optimizes the airflow path, facilitates the rapid flow of gas into the interior of the inner air duct, reduces airflow resistance, reduces energy loss, ensures smooth ventilation of the device, and improves overall work efficiency.

[0016] The anti-grease cyclone separation device for range hoods of the present invention is provided with a scraping assembly. When the fan is running, the oil fume airflow exerts an upward force on the conical bucket, causing it to slide upward on the inner optical axis. The annular scraper is driven by the pull rope to move upward in contact with the annular filter to scrape off the grease particles remaining on the filter. After the fan stops running, the annular scraper moves downward in contact with the annular filter under the action of gravity of the circular cylinder cover and the annular scraper to scrape off the grease particles adhering to the filter again. This automatic cleaning function effectively prevents the filter from being blocked, prolongs the service life of the filter, and ensures the continuous and efficient operation of the device. During the movement of the annular scraper, the grease particles thrown toward the annular filter pass through the filter, move between the circular barrel cover and the annular filter, and slide along the inner wall of the circular barrel cover to be stored in the storage box. The storage box can be unscrewed from the surface of the external threaded pipe, which is convenient for users to clean the collected grease particles, thereby realizing effective collection and treatment of grease.

[0017] The anti-grease cyclone separation device for range hoods described in the present invention is equipped with a cleaning component. When the annular scraper and the circular barrel cover are pulled upward, the force is transmitted to the U-shaped block through pulley 1, driving the J-shaped plate to move upward, thereby making the isosceles block fit tightly against the inner wall of the isosceles groove. After the device is used, the isosceles block moves downward under the action of gravity, and the oil particles remaining inside the lower circular cover flow along the isosceles groove into the circular barrel cover, and then flow into the storage box through the external threaded pipe, thereby achieving effective cleaning of the lower circular cover and avoiding the influence of grease residue on the performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Cross-sectional view at AA in the middle; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle; Figure 5 For the present invention Figure 2 Enlarged view of point C in the middle; Figure 6 This is a schematic structural diagram of the circular barrel cover and storage box in the present invention; Figure 7 Schematic diagram of the structure of the lower circular cover and the annular filter screen in the present invention; Figure 8 Schematic diagram of the structure of the spiral blades and the inner air duct in the present invention; Figure 9 Schematic diagram of the structure of the annular scraper and the outer connecting rod in the present invention; Figure 10 Schematic diagram of the structure of the J-shaped plate and the U-shaped block in the present invention; Figure 11 It is a structural schematic diagram of the conical bucket and cross bar in the present invention.

[0019] Among them: 1. inner air duct; 2. separation component; 21. upper circular cover; 22. fan; 23. circular cylinder cover; 24. annular filter; 25. air inlet; 26. storage box; 27. spiral blade; 28. lower circular cover; 29. ​​inner connecting rod; 210. external threaded pipe; 3. scraping component; 31. inner optical axis; 32. conical bucket; 33. lower retaining ring; 34. cross bar; 35. pull rope; 36. pulley 1; 37. U-shaped block; 38. pulley 2; 39. pulley 3; 310. annular scraper; 311. outer connecting rod; 312. carrier block; 313. through hole; 314. upper retaining ring; 4. cleaning component; 41. square groove; 42. T-bar; 43. J-plate; 44. T-slot; 45. lower connecting rod; 46. isosceles block; 47. isosceles groove. DETAILED DESCRIPTION

[0020] The following will be combined with the Figure 1-11 The present invention is described in detail, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] like Figures 1-11As shown, a range hood anti-grease cyclone separation device includes an inner air duct 1, and a separation component 2 is provided on the surface of the inner air duct 1. The separation component 2 includes an upper circular cover 21, a fan 22, a circular cylinder cover 23, an annular filter 24, a storage box 26, a spiral blade 27, a lower circular cover 28, an inner connecting rod 29 and an external threaded tube 210. The surface of the inner air duct 1 is fixedly sleeved with an upper circular cover 21, and a lower circular cover 28 is provided below the upper circular cover 21. An annular filter 24 is fixedly connected between the lower circular cover 28 and the upper circular cover 21, and the surface of the inner air duct 1 is fixedly sleeved with a spiral blade 27. The fan 22 is installed inside the inner air duct 1, and a gap is left between the bottom end of the inner air duct 1 and the lower circular cover 28.

[0022] The lower circular cover 28 is located inside the circular barrel cover 23, and a gap is left between the lower circular cover 28 and the circular barrel cover 23. An external threaded tube 210 is fixedly connected to the circular groove opened at the bottom end of the circular barrel cover 23, and the external threaded tube 210 is threadedly connected to the threaded hole opened on the upper surface of the storage box 26.

[0023] An inner connecting rod 29 in a circular array is fixedly connected between the lower circular cover 28 and the inner air duct 1 . The outer diameters of the lower circular cover 28 , the annular filter 24 and the upper circular cover 21 are the same.

[0024] The spiral blade 27 is located between the upper circular cover 21 and the lower circular cover 28 , and the surface of the spiral blade 27 is in contact with the annular filter 24 . An air inlet 25 is formed on the upper surface of the upper circular cover 21 .

[0025] The scraping assembly 3 is provided inside the circular cylinder cover 23, and the scraping assembly 3 includes an inner optical axis 31, a conical bucket 32, a lower retaining ring 33, a cross bar 34, a pull rope 35, a pulley 36, a U-shaped block 37, a pulley 2 38, a pulley 39, an annular scraper 310, an outer connecting rod 311, a carrier block 312 and an upper retaining ring 314. The inner air duct 1 is provided with an inner optical axis 31, and the surface of the inner optical axis 31 is provided with a conical bucket 32. The inner optical axis 31 and the conical bucket 32 ​​are slidably connected. The bottom end of the inner optical axis 31 is fixedly connected to the lower circular cover 28, and the surface of the conical bucket 32 ​​is symmetrically fixedly connected with two cross Rod 34, the surface of each cross bar 34 is fixedly connected with a pull rope 35, the surface of the lower circular cover 28 is provided with an annular scraper 310, the lower circular cover 28 and the annular scraper 310 are slidably connected, the outer ring of the annular scraper 310 is fixedly connected with an outer connecting rod 311 in an annular array, the end of the pull rope 35 away from the cross bar 34 is fixedly connected to the outer connecting rod 311, and two U-shaped blocks 37 are symmetrically arranged inside the inner air duct 1, and a pulley 36 is installed inside each U-shaped block 37. The pull rope 35 runs through between the U-shaped block 37 and the pulley 36, and the pulley 36 is located below the cross bar 34.

[0026] The pull rope 35 is located in the through hole 313 opened on the surface of the inner air duct 1. The pull rope 35 and the inner air duct 1 are slidably connected. A pulley 2 38 is installed inside the inner air duct 1 near the through hole 313. The pull rope 35 and the pulley 2 38 fit together.

[0027] Two pulleys 39 are installed on the upper surface of the upper circular cover 21, and the pull rope 35 is in contact with the pulleys 39.

[0028] A plurality of carrier blocks 312 are fixedly connected to the surface of the outer ring of the lower circular cover 28. The carrier blocks 312 are located below the annular scraper 310. The annular scraper 310 is located inside the circular barrel cover 23, and the end of the outer connecting rod 311 away from the annular scraper 310 is fixedly connected to the circular barrel cover 23.

[0029] A lower retaining ring 33 and an upper retaining ring 314 are fixedly sleeved on the surface of the inner optical axis 31 . The conical bucket 32 ​​is located between the lower retaining ring 33 and the upper retaining ring 314 . The upper retaining ring 314 is located above the lower retaining ring 33 .

[0030] A cleaning assembly 4 is provided at the bottom end of the inner air duct 1, and the cleaning assembly 4 includes a T-shaped rod 42, a J-shaped plate 43, a lower connecting rod 45 and an isosceles block 46. Two J-shaped plates 43 are provided at the bottom end of the inner air duct 1, and the bottoms of the two J-shaped plates 43 are fixedly connected with the lower connecting rod 45. The bottom end of each lower connecting rod 45 is fixedly connected with an isosceles block 46, and the isosceles block 46 is inserted into the isosceles groove 47 opened on the bottom surface of the lower circular cover 28. The two J-shaped plates 43 are symmetrically arranged, and the J-shaped plates 43 are inserted into the square groove 41 opened at the bottom end of the inner air duct 1. The J-shaped plate 43 is slidably connected to the inner air duct 1, and one end of the J-shaped plate 43 is fixedly connected to the U-shaped block 37. A T-shaped rod 42 is inserted in the T-slot 44 opened at the other end of the J-shaped plate 43, and the T-shaped rod 42 and the J-shaped plate 43 are slidably connected. The top of the T-shaped rod 42 is fixedly connected to the inner air duct 1.

[0031] Working principle: The fan 22 is turned on and starts running, so that the external oil smoke flows into the interior of the upper circular cover 21 along the air inlet 25 under the action of suction. After the oil smoke enters the upper circular cover 21, it forms a spiral high-speed rotating airflow under the guidance of the spiral blades 27. When the oil smoke forms a spiral high-speed rotating airflow, due to the action of centrifugal force, the grease particles in the oil smoke will be thrown to the annular filter 24. The annular filter 24 filters the grease particles and intercepts them on the filter surface, thereby achieving preliminary separation of the grease particles and gas. The gas filtered by the annular filter 24 continues to flow downward. Since the bottom inner wall of the lower circular cover 28 is in an arc shape, the gas quickly flows into the bottom of the inner air duct 1 and is finally discharged from the inside of the inner air duct 1. During the operation of the fan 22, oil smoke flows from bottom to top along the inner air duct 1. The gas flow exerts an upward force on the conical bucket 32, causing the conical bucket 32 ​​to slide upward on the surface of the inner optical axis 31. During the sliding process, the annular scraper 310 is pulled upward by the pull rope 35. The annular scraper 310 moves upward in contact with the annular filter 24, automatically scraping off the residual grease particles on the annular filter 24. At the same time, the annular scraper 310 drives the circular cylinder cover 23 to move upward synchronously through the external connecting rod 311. When the conical bucket 32 ​​and the upper retaining ring 314 are in contact with each other, the annular scraper 310 and the circular barrel cover 23 stop moving. At this time, the grease particles thrown toward the annular filter 24 pass through the annular filter 24, move between the circular barrel cover 23 and the annular filter 24, and slide along the inner wall of the circular barrel cover 23 to be stored in the storage box 26. When the device is finished using, the fan 22 stops running, and the circular cylinder cover 23 and the annular scraper 310 move downward under the action of their own gravity. The annular scraper 310 moves downward in contact with the annular filter 24, and automatically scrapes off the grease particles adhering to the annular filter 24 again. When the fan 22 is started, during the upward movement of the annular scraper 310 and the circular cylinder cover 23, the force exerted by the pull rope 35 is applied to the U-shaped block 37 via the pulley 1 36, causing the U-shaped block 37 to synchronously move the J-shaped plate 43 upward for a distance. The movement of the J-shaped plate 43 pulls the isosceles block 46 upward via the lower connecting rod 45, so that the isosceles block 46 is tightly attached to the inner wall of the isosceles groove 47, thereby ensuring the flow rate of external oil smoke in the device; When the device is finished using, the circular barrel cover 23 and the annular scraper 310 move downward until the annular scraper 310 and the carrier block 312 are in contact with each other. Under the action of gravity of the isosceles block 46, the lower connecting rod 45, the J-shaped plate 43 and the U-shaped block 37, the isosceles block 46 moves downward. Under the action of the T-shaped rod 42, the downward movement distance of the J-shaped plate 43 is limited. At this time, the oil particles remaining in the lower circular cover 28 flow into the interior of the circular barrel cover 23 along the interior of the isosceles groove 47, and flow into the interior of the storage box 26 along the interior of the external threaded tube 210. Regularly unscrew the storage box 26 from the surface of the external threaded tube 210 to clean the collected grease particles to ensure the normal operation and separation effect of the device; When the oil smoke forms a spiral high-speed rotating airflow under the guidance of the spiral blades 27, the grease particles are thrown toward the annular filter 24 under the action of centrifugal force. The annular filter 24 can intercept these grease particles, achieve a preliminary separation of the grease particles and the gas, filter out the grease from the oil smoke, and make the exhaust gas cleaner.

[0032] Auxiliary scraping and cleaning: When the scraping component 3 is working, the annular scraper 310 moves up and down in contact with the annular filter 24, and automatically scrapes off the grease particles remaining or adhering to the annular filter 24, thereby ensuring the permeability and separation effect of the filter.

[0033] When the fan 22 is running, the annular scraper 310 moves upward under the pull of the pull rope 35, and the annular scraper 310 moves upward for a distance against the annular filter 24 and then stops. At this time, the grease particles thrown toward the annular filter 24 will pass through the annular filter 24, move between the circular cylinder cover 23 and the annular filter 24, and slide against the inner wall of the circular cylinder cover 23 to be stored in the storage box 26. The annular filter 24 does not completely block the grease, but allows some grease to pass through, so that the separated grease can be collected in the storage box 26. The annular filter 24 is made of stainless steel, which has good corrosion resistance and strength, can withstand the erosion of grease and other components in the smoke, and is not easy to deform during long-term use. Its surface is relatively smooth, which facilitates the attachment and sliding of grease particles under the action of centrifugal force, and also facilitates the annular scraper 310 to scrape and clean its surface.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention, and the standard parts used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0035] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A range hood anti-grease cyclone separation device, comprising an inner air duct (1); Its characteristics are: The surface of the inner air duct (1) is provided with a separation assembly (2), the separation assembly (2) comprising an upper circular cover (21) fixedly sleeved on the surface of the inner air duct (1) and a lower circular cover (28) arranged below the upper circular cover (21), an annular filter (24) fixedly connected between the lower circular cover (28) and the upper circular cover (21), a spiral blade (27) fixedly sleeved on the surface of the inner air duct (1), a fan (22) installed inside the inner air duct (1), and a gap between the bottom end of the inner air duct (1) and the lower circular cover (28).

2. The range hood anti-grease cyclone separation device according to claim 1, characterized in that: The lower circular cover (28) is located inside the circular barrel cover (23), and a gap is left between the lower circular cover (28) and the circular barrel cover (23). An externally threaded tube (210) is fixedly connected to a circular groove opened at the bottom end of the circular barrel cover (23), and the externally threaded tube (210) is threadedly connected to a threaded hole opened on the upper surface of the storage box (26).

3. The range hood anti-grease cyclone separation device according to claim 1, characterized in that: An inner connecting rod (29) in a ring array is fixedly connected between the lower circular cover (28) and the inner air duct (1); the outer diameters of the lower circular cover (28), the annular filter (24) and the upper circular cover (21) are the same.

4. The range hood anti-grease cyclone separation device according to claim 1, characterized in that: The spiral blade (27) is located between the upper circular cover (21) and the lower circular cover (28), and the surface of the spiral blade (27) is in contact with the annular filter (24). An air inlet hole (25) is provided on the upper surface of the upper circular cover (21).

5. The range hood anti-grease cyclone separation device according to claim 2, characterized in that: A scraping assembly (3) is provided inside the circular barrel cover (23), and the scraping assembly (3) comprises an inner optical axis (31) provided inside the inner air duct (1) and a conical bucket (32) sleeved on the surface of the inner optical axis (31), the inner optical axis (31) and the conical bucket (32) being slidably connected, the bottom end of the inner optical axis (31) being fixedly connected to the lower circular cover (28), the surface of the conical bucket (32) being symmetrically fixedly connected to two cross bars (34), the surface of each cross bar (34) being fixedly connected to a pull rope (35), and the surface of the lower circular cover (28) being sleeved with an annular scraper ( 310), the lower circular cover (28) and the annular scraper (310) are slidably connected, the outer ring of the annular scraper (310) is fixedly connected to an outer connecting rod (311) in an annular array, the end of the pull rope (35) away from the cross bar (34) is fixedly connected to the outer connecting rod (311), two U-shaped blocks (37) are symmetrically arranged inside the inner air duct (1), and a pulley (36) is installed inside each of the U-shaped blocks (37), and the pull rope (35) passes through between the U-shaped block (37) and the pulley (36), and the pulley (36) is located below the cross bar (34).

6. The range hood anti-grease cyclone separation device according to claim 5, characterized in that: The pull rope (35) is located in a through hole (313) opened on the surface of the inner air duct (1), and the pull rope (35) and the inner air duct (1) are slidably connected. A second pulley (38) is installed in the inner air duct (1) near the through hole (313), and the pull rope (35) and the second pulley (38) are in close contact with each other.

7. The range hood anti-grease cyclone separation device according to claim 5, characterized in that: Two pulleys (39) are installed on the upper surface of the upper circular cover (21), and the pull rope (35) and the pulley (39) are in close contact.

8. The range hood anti-grease cyclone separation device according to claim 5, characterized in that: A plurality of carrier blocks (312) are fixedly connected to the surface of the outer ring of the lower circular cover (28), the carrier blocks (312) are located below the annular scraper (310), the annular scraper (310) is located inside the circular barrel cover (23), and one end of the outer connecting rod (311) away from the annular scraper (310) is fixedly connected to the circular barrel cover (23).

9. The range hood anti-grease cyclone separation device according to claim 5, characterized in that: A surface fixing sleeve of the inner optical axis (31) is provided with a lower retaining ring (33) and an upper retaining ring (314); the conical bucket (32) is located between the lower retaining ring (33) and the upper retaining ring (314); and the upper retaining ring (314) is located above the lower retaining ring (33).

10. The range hood anti-grease cyclone separation device according to claim 1, characterized in that: A cleaning assembly (4) is provided at the bottom end of the inner air duct (1), and the cleaning assembly (4) comprises two J-shaped plates (43) provided at the bottom end of the inner air duct (1) and a lower connecting rod (45) fixedly connected to the bottom of the two J-shaped plates (43). The bottom end of each lower connecting rod (45) is fixedly connected to an isosceles block (46), and the isosceles block (46) is inserted into an isosceles groove (47) provided on the bottom surface of the lower circular cover (28). The two J-shaped plates (43) are symmetrically arranged. The J-shaped plate (43) is inserted into the square groove (41) opened at the bottom end of the inner air duct (1), the J-shaped plate (43) and the inner air duct (1) are slidably connected, one end of the J-shaped plate (43) is fixedly connected to the U-shaped block (37), a T-shaped rod (42) is inserted into the T-shaped groove (44) opened at the other end of the J-shaped plate (43), the T-shaped rod (42) and the J-shaped plate (43) are slidably connected, and the top end of the T-shaped rod (42) is fixedly connected to the inner air duct (1).

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