A gas circulation device for laboratory air purification

Abstract

The application relates to the technical field of gas purification, in particular to a gas circulating device for laboratory air purification, which comprises a casing, two air inlets are symmetrically arranged on the two sides of the casing, an air outlet structure is arranged at the upper end of the casing, two elastic sliding structures are symmetrically arranged on the inner side walls of the casing, and a baffle one is rotationally connected to the side surface of the elastic sliding structure. The application can dynamically adjust the flow rate of dust air impact on the filter plate by lifting the filter plate. When the filter plate has the worst filtering effect, the filter plate can be preliminarily cleaned by the elastic reset of the spring one. In the process of the preliminary cleaning, the flow range of dust air during the preliminary cleaning can be reduced. Then, the bevel tooth is lowered and continuously pushed by the resistance block, so that the filter plate can be lightly shaken and cleaned, and the dust cleaning effect is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas purification, in particular to a gas circulation device for laboratory air purification. BACKGROUND

[0002] The medical laboratory gas filtration and purification device with the publication number CN117101290B relates to the technical field of filtration and purification devices and comprises a purification shell, a dust suction mechanism, a pretreatment mechanism and a filtration mechanism. The dust suction mechanism is arranged at the air inlet end of the purification shell, the pretreatment mechanism and the filtration mechanism are arranged in the purification shell, the filtration mechanism is arranged at the output end of the pretreatment mechanism, the pretreatment mechanism is a particle filter plate, a plurality of particle filter plates are provided, the adjacent particle filter plates are sealingly and rotatably connected, the included angle between the adjacent particle filter plates is less than 180 degrees, the two ends of the particle filter plate combination are sealingly and rotatably connected to the two sides of the interior of the purification shell, the particle filter plate is driven to vibrate by the vibration machine arranged on one side of the particle filter plate, the collection mechanism is arranged in the purification shell below the particle filter plate, and the air inlet pipe is arranged on the outside of the air inlet end of the purification shell. The particle filter plate combination and the collection mechanism can realize the effect of cleaning the particle filter plate without disassembly, and the use is more convenient.

[0003] However, in the above-mentioned patent, during the continuous vibration of the filter plate, since the shape of the filter plate at this time is a folded fan shape, and the ventilation effect of the filter plate at this time is poor, repeated strong vibration can easily cause the dust on the surface of the filter plate to be disturbed by the filter plate to produce secondary dust raising, and the airflow speed received by the filter plate cannot be dynamically adjusted, so that the filter plate cannot better contact the dust air under the condition that the filter plate has good filtering effect. SUMMARY

[0004] The purpose of the present application is to provide a gas circulation device for laboratory air purification to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a gas circulation device for laboratory air purification, comprising a machine shell, two air inlets are symmetrically arranged on the two sides of the machine shell, an air outlet structure is arranged at the upper end of the machine shell, two elastic sliding structures are symmetrically arranged on the inner side wall of the machine shell, a baffle one is rotatably connected to the side surface of the elastic sliding structure, two baffles two are also rotatably connected to the inner side wall of the machine shell, and a rotating shaft is rotatably connected between the baffle two and the baffle one;

[0006] A filter plate is arranged at the upper end of the elastic sliding structure, and a limiting structure fixedly connected with the elastic sliding structure is arranged at the four corner edges of the filter plate, so that the filter plate can slightly move upward;

[0007] The upper end of the filter plate is slidably connected to a nut seat. Several helical teeth are symmetrically fixed to the outer wall of the nut seat. Two limiting shells are symmetrically arranged on both sides of the nut seat, and the limiting shells are fixed to the filter plate. A contact block is slidably connected to the inner wall of the limiting shell, and the upper and lower ends of the contact block can abut against the helical teeth. The lower end of the contact block is provided with a locking structure.

[0008] The inner wall of the housing is also equipped with a connector. The upper end of the connector is provided with a driving structure that can drive the nut seat to move up and down. The lower end of the connector is fixed with a pushing structure that can push the abutment block to move and trigger the locking structure at the same time.

[0009] Preferably, the exhaust structure includes an exhaust port, which is fixedly connected to the inner wall of the upper slot of the housing, and an air intake component is provided at the lower end of the exhaust port, which is fixedly connected to the inner side wall of the housing.

[0010] Preferably, the elastic sliding structure includes two positioning strips, which are symmetrically fixed to the inner side wall of the housing. Each positioning strip has two positioning posts slidably connected to its two ends. A slide bar is fixed to the upper end of each positioning post. The slide bar is rotatably connected to one end of the baffle. A spring is fixed between the slide bar and the positioning strip.

[0011] Preferably, the limiting structure includes a positioning rod, which is fixedly connected to the upper end of the slide bar and slidably connected to the filter plate. A baffle is fixedly connected to the upper end of the positioning rod.

[0012] Preferably, the locking structure includes an insert, the insert is slidably connected to the lower surface of the abutment block, a spring is fixedly connected between the upper end of the insert and the abutment block, and a groove is provided through the lower surface of the filter plate, and the groove can be inserted into the insert.

[0013] Preferably, each of the abutting blocks is fixedly connected to a spring three at the end away from the nut seat, and the spring three is fixedly connected to the inner sidewall of the limiting shell. A push plate is fixedly connected to the lower end of the nut seat, and the push plate can abut against the insert.

[0014] Preferably, the drive structure includes a motor, which is fixedly connected to the upper end of the connector, and a reciprocating lead screw is fixedly connected to the output end of the lower end of the connector, and the outer side wall of the reciprocating lead screw meshes with the nut seat.

[0015] Preferably, the pushing structure includes a sleeve, which is fixed to the lower end of the connector. Two inclined blocks are symmetrically installed on the outer side wall of the sleeve. An inclined block is fixed to the upper end of each of the abutting blocks, and the inclined blocks can be pushed and slid by the inclined blocks.

[0016] Preferably, an ash box is fixedly connected to the outer wall of the housing, and a collection plate that can be inserted into the housing cavity is provided at the bottom of the inner cavity of the ash box. A second motor is fixedly connected to the end of the ash box away from the housing, and a threaded rod is fixedly connected to the output end of the second motor, and the threaded rod is screwed to the collection plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The motor drives the reciprocating screw to rotate slowly, which in turn pulls the nut seat to rise slowly. The nut seat abuts the contact block through the helical teeth on its outer surface, causing the filter plate to rise along with it. During the rise of the filter plate, the distance between the two rotating shafts gradually increases, which gradually changes the airflow speed blowing towards the housing, dynamically adjusting the wind force on the filter plate. Then, when the filter plate moves to the highest point, the pushing mechanism activates the locking mechanism, which releases the contact block from the helical teeth, allowing the filter plate to fall quickly. At the same time, the limiting structure causes the filter plate to have a relatively strong initial impact with the slide bar for dust cleaning. During the dust cleaning process, the two rotating shafts will also come into contact to prevent dust from spreading. At the same time, the locking mechanism is released, and then the contact block is pressed and released as the helical teeth descend, causing the filter plate to vibrate slightly, thereby further cleaning the filter plate. Attached Figure Description

[0019] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention from another angle;

[0022] Figure 3 This is a cross-sectional structural diagram of the gray box of the present invention;

[0023] Figure 4 This is a schematic diagram of the overall structure of the present invention with the casing removed;

[0024] Figure 5 For the present invention Figure 4 A magnified view of a section at point A in the middle;

[0025] Figure 6 This is a schematic cross-sectional view of the overall structure of the present invention;

[0026] Figure 7 For the present invention Figure 6 A magnified view of a section at point B in the middle;

[0027] Figure 8 This is a schematic diagram of the bottom structure of the filter plate of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Housing; 2. Baffle 1; 3. Rotating shaft; 4. Positioning pin; 5. Spring 1; 6. Filter plate; 7. Nut seat; 8. Helical gear; 9. Reciprocating lead screw; 10. Connecting piece; 11. Motor 1; 12. Sleeve; 13. Bevel block; 14. Limiting shell; 141. Contact block; 15. Bevel block; 16. Insert block; 17. Spring 2; 18. Spring 3; 19. Groove; 20. Baffle 2; 21. Positioning rod; 22. Baffle plate; 23. Sliding strip; 24. Positioning strip; 25. Air inlet; 26. Suction assembly; 27. Exhaust port; 28. Ash box; 29. ​​Motor 2; 30. Threaded rod; 31. Collection plate; 32. Push plate. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1-8 The present invention provides a technical solution: a gas circulation device for laboratory air purification, comprising a housing 1, two air inlets 25 symmetrically installed on both sides of the housing 1, an exhaust structure installed at the upper end of the housing 1, two elastic sliding structures symmetrically installed on the inner sidewall of the housing 1, a baffle 2 rotatably connected to the side surface of the elastic sliding structure, and two baffles 20 symmetrically rotatably connected to the inner sidewall of the housing 1, with a rotating shaft 3 rotatably connected between the baffles 20 and the baffles 2.

[0032] A filter plate 6 is provided at the upper end of the elastic sliding structure. Each of the four corner edges of the filter plate 6 is provided with a limiting structure that is fixed to the elastic sliding structure, which allows the filter plate 6 to move slightly upward.

[0033] The upper end of the filter plate 6 is slidably connected to a nut seat 7. Several helical teeth 8 are symmetrically fixed to the outer wall of the nut seat 7. Two limiting shells 14 are symmetrically arranged on both sides of the nut seat 7, and the limiting shells 14 are fixed to the filter plate 6. The inner wall of the limiting shell 14 is slidably connected to an abutment block 141, and the upper and lower ends of the abutment block 141 can abut against the helical teeth 8. The lower end of the abutment block 141 is provided with a locking structure.

[0034] The inner wall of the housing 1 is also equipped with a connector 10. The upper end of the connector 10 is provided with a drive structure, which can drive the nut seat 7 to move up and down. The lower end of the connector 10 is fixed with a push structure, which can push the abutment block 141 to move and trigger the locking structure at the same time.

[0035] For details, please refer to Figure 3 A rotating shaft is connected between the upper end of baffle 1 2 and the elastic sliding structure, and a rotating shaft is also installed between the lower end of baffle 2 20 and the inner wall of the housing 1. When the elastic sliding structure slides up and down, the angle between baffle 1 2 and baffle 2 20 on the same side will change, thereby changing the distance between the two opposing rotating shafts 3, thus changing the airflow speed between the two housings 1.

[0036] The exhaust structure includes an exhaust port 27, which is fixed to the inner wall of the upper slot of the housing 1. An air intake component 26 is provided at the lower end of the exhaust port 27. The air intake component 26 is fixed to the inner wall of the housing 1. When cleaning the filter plate 6, the air intake component 26 will be closed.

[0037] Specifically, air is drawn into the housing 1 through the intake assembly 26 and then discharged from the exhaust port 27. Simultaneously, air flows into the housing 1 through the intake port 25. (Refer to...) Figure 3 When the gas enters the housing 1, it will pass between the two rotating shafts 3 and then be filtered by the filter plate 6. When the suction volume of the suction component 26 remains constant, the flow rate of the gas inside the housing 1 will change according to the distance between the two rotating shafts 3. The dust gas is filtered by the filter plate 6 under different flow rates.

[0038] The elastic sliding structure includes two positioning bars 24, which are symmetrically fixed to the inner wall of the housing 1. Each positioning bar 24 has two positioning posts 4 that slide up and down at both ends. A slide bar 23 is fixed to the upper end of the positioning post 4. The slide bar 23 is rotatably connected to one end of the baffle 2. A spring 5 is fixed between the slide bar 23 and the positioning bar 24.

[0039] Specifically, spring 5 is sleeved on the outer wall of positioning post 4 to improve the stability of spring 5's elastic release. At the same time, when slide bar 23 slides upward to the point where the pushing structure can be activated, if slide bar 23 is reset by the elastic restoring force of spring 5, the two rotating shafts 3 will collide and contact, thereby blocking the space between filter plate 6 and baffle 2 for a moment. This reduces the flow of dust and air during the initial dust removal process when filter plate 6 is violently shaken and cleaned when slide bar 23 descends rapidly.

[0040] The limiting structure includes a positioning rod 21, which is fixedly connected to the upper end of the slide bar 23 and slidably connected to the filter plate 6. A baffle plate 22 is fixedly connected to the upper end of the positioning rod 21.

[0041] Specifically, the drive structure can lift the nut seat 7. During the lifting process, the upper end of the helical tooth 8 will abut against the lower end of the contact block 141, thereby driving the filter plate 6 to slide upward. When the filter plate 6 slides upward, it will abut against the baffle 22, thereby causing the filter plate 6 to pull the slide bar 23 upward together. When the slide bar 23 is lifted and reset and then quickly drops and vibrates violently, the limiting structure will cause the filter plate 6 and the upper surface of the slide bar 23 to generate a secondary impact vibration, thereby making the initial dust removal effect of the filter plate 6 better.

[0042] The locking structure includes an insert 16, which is slidably connected to the lower surface of the contact block 141. A spring 17 is fixed between the upper end of the insert 16 and the contact block 141. A groove 19 is provided through the lower surface of the filter plate 6, and the groove 19 can be inserted into the insert 16.

[0043] Each contact block 141 has a spring 3 18 fixedly connected to the end away from the nut seat 7, and the spring 3 18 is fixedly connected to the inner side wall of the limiting shell 14. The lower end of the nut seat 7 is fixedly connected to a push plate 32, and the push plate 32 can abut against the insert block 16.

[0044] For details, please refer to Figure 7 The lower end of the insert 16 is a bevel, and the second spring 17 is in a state of storing elastic potential energy. When the abutment block 141 is pushed by the push structure to slide away from the nut seat 7, when the insert 16 passes the position of the groove 19, the second spring 17 releases elastic potential energy and pushes the insert 16 into the cavity of the groove 19. At this time, the bevel at the lower end of the insert 16 will not contact the inner wall of the groove 19, thus restricting the abutment block 141 to the current position. At this time, the abutment block 141 cannot contact the helical tooth 8. When the push plate 32 slides upward relative to the filter plate 6 and contacts the groove opening of the groove 19, the push plate 32 can push the insert 16 upward, so that the bevel of the insert 16 contacts the inner wall of the groove 19. The elastic restoring force generated by the third spring 18 can push the abutment block 141 back to its original position. At the same time, the spring 17 is compressed again when the insert 16 slides upward.

[0045] The drive structure includes a motor 11, which is fixedly connected to the upper end of the connector 10. The output end of the lower end of the connector 10 is fixedly connected to a reciprocating lead screw 9, and the outer side wall of the reciprocating lead screw 9 meshes with the nut seat 7.

[0046] The pushing structure includes a sleeve 12, which is fixed to the lower end of the connector 10. Two inclined blocks 13 are symmetrically installed on the outer side wall of the sleeve 12. An inclined block 15 is fixed to the upper end of each abutment block 141, and the inclined block 15 can be pushed and slid by the inclined block 13.

[0047] Specifically, the reciprocating screw 9 is slowly rotated by the motor 11. During the rotation of the reciprocating screw 9, the nut seat 7 is slowly moved upward. When the contact block 141 is not restricted by the locking structure, the upward sliding of the nut seat 7 will cause the helical teeth 8 to contact the straight plane of the contact block 141, thereby pushing the limiting shell 14 upward. The limiting shell 14, together with the filter plate 6 and the slide bar 23, moves upward, thereby continuously increasing the distance between the two rotating shafts 3. This ensures that when the filter plate 6 is initially used for air filtration, the air it receives is first... The high flow rate allows the filter plate 6 to enhance the inertia of dust particles in the airflow at its best filtration stage immediately after cleaning, making it easier for them to collide with and be captured by the fibers of the filter plate 6. As the filtration effect of the filter plate 6 deteriorates over time, the distance between the two rotating shafts 3 will also increase as the slide bar 23 slides upward, thereby dynamically changing the airflow rate. When the filtration effect of the filter plate 6 gradually deteriorates, the airflow rate is reduced, thereby reducing damage to the filter plate 6 and improving the service life and filtration effect of the filter plate 6.

[0048] As the limiting shell 14 moves upward, the inclined block 15 will come into contact with the inclined edge block 13. (Refer to...) Figure 5 The contact surfaces of inclined blocks 13 and 15 are both inclined. The contact between inclined blocks 13 and 15 pushes inclined block 15 away from the nut seat 7, thus activating the locking structure. At this time, the filter plate 6 and the nut seat 7 are at their highest height, and the flow rate between the two rotating shafts 3 is at its slowest. The filtration effect of the filter plate 6 is also at its lowest. At this time, the filter plate 6 can be cleaned. When the inclined block 15 is pushed by the inclined block 13, the contact block 141 is restricted by the locking structure and will not be contacted by the helical teeth 8. At this time, the positions of the nut seat 7 and the helical teeth 8 will not change, but the contact block 141 will be released from the restriction of the helical teeth 8 by the elastic restoring force of the spring 5, thus causing the filter plate 6 to descend rapidly. When the filter plate 6 descends to its lowest height, the push plate 32 will... When the insert 16 contacts the contact block, the limiting structure releases the restriction on the contact block 141. At this time, as the reciprocating screw 9 continues to rotate, due to its own structural characteristics, the reciprocating screw 9 will begin to push the nut seat 7 to descend. When the nut seat 7 descends, the inclined surface of the lower surface of the helical tooth 8 will begin to contact the inclined surface of the upper surface of the contact block 141. Through the contact between the helical tooth 8 and the inclined surface of the contact block 141, the contact block 141 will move away from the helical tooth 8 again. However, at the same time, the spring 5 will also be compressed. Every time the contact block 141 passes a helical tooth 8, the spring 5 will release an elastic restoring force, causing the filter plate 6 to bounce once. At the same time, the elastic restoring force released by the spring 5 cannot help the helical tooth 8 push the contact block 141 to move. This process repeats until the nut seat 7 moves to the lowest point, at which point it will be in a state of restoring force again. Figure 7At that position, the cleaning of filter plate 6 has been completed.

[0049] The outer wall of the casing 1 is fixedly connected to a ash box 28. The bottom of the inner cavity of the ash box 28 is provided with a collection plate 31 that can be inserted into the cavity of the casing 1. The end of the ash box 28 away from the casing 1 is fixedly connected to a motor 29. The output end of the motor 29 is fixedly connected to a threaded rod 30, and the threaded rod 30 is screwed to the collection plate 31.

[0050] Specifically, before the nut seat 7 descends to clean the filter plate 6, the motor 29 drives the threaded rod 30 to rotate, causing the collection plate 31, which is screwed to the threaded rod 30, to slide into the cavity of the housing 1, so that the dust cleaned off the filter plate 6 falls into the interior of the collection plate 31.

[0051] Working principle: The motor 11 drives the reciprocating screw 9 to rotate slowly, thereby pulling the nut seat 7 to rise slowly. The nut seat 7 abuts against the contact block 141 through the helical teeth 8 on its outer surface, thereby causing the filter plate 6 to rise along with it. During the process of the filter plate 6 rising, the distance between the two rotating shafts 3 gradually increases, thereby gradually changing the airflow speed blowing towards the housing 1, dynamically adjusting the wind force on the filter plate 6. Then, when the filter plate 6 moves to the highest point, the pushing mechanism activates the locking mechanism, causing the contact block 141 to release from the helical teeth. The restriction of 8 causes the filter plate 6 to fall quickly. At the same time, the limiting structure makes the filter plate 6 and the slide bar 23 have a relatively strong initial impact to clean the dust. During the dust cleaning process, the two rotating shafts 3 will also come into contact to prevent the dust from spreading. At the same time, the locking structure contacts and the abutment block 141 is reset. Then, the abutment block 141 is pressed and released during the descent of the helical tooth 8, which makes the filter plate 6 bounce slightly, thus performing a second dust cleaning on the filter plate 6. At the same time, during the dust cleaning process, the collection plate 31 will slide into the cavity of the housing 1 to store the dust.

[0052] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A gas circulation device for laboratory air purification, comprising a housing (1), characterized in that: Two air inlets (25) are symmetrically installed on the two sides of the shell (1), an air exhaust structure is installed on the upper end of the shell (1), two elastic sliding structures are symmetrically installed on the inner side wall of the shell (1), the side surface of the elastic sliding structure is rotationally connected with a baffle one (2), the inner side wall of the shell (1) is further rotationally connected with two baffles two (20), and the baffle two (20) and the baffle one (2) are rotationally connected with a rotating shaft (3); A filter plate (6) is arranged at the upper end of the elastic sliding structure, limit structures are arranged at the four corner edges of the filter plate (6) and are fixedly connected with the elastic sliding structure, so that the filter plate (6) can slightly move upward; A nut seat (7) is slidably connected to the upper end of the filter plate (6), a plurality of bevel gears (8) are symmetrically fixedly connected to the outer side wall of the nut seat (7), two limiting shells (14) are symmetrically arranged on the two sides of the nut seat (7) and are fixedly connected with the filter plate (6), a contact block (141) is slidably connected to the inner wall of the limiting shell (14), the upper end and the lower end of the contact block (141) can abut against the bevel gear (8), and the lower end of the contact block (141) is provided with a clamping structure; A connecting piece (10) is further installed on the inner side wall of the shell (1), a driving structure is arranged at the upper end of the connecting piece (10) and can drive the nut seat (7) to move up and down, a pushing structure is fixedly connected to the lower end of the connecting piece (10) and can push the contact block (141) to move and trigger the clamping structure at the same time; The elastic sliding structure comprises two positioning strips (24), the two positioning strips (24) are symmetrically fixedly connected to the inner side wall of the shell (1), two positioning columns (4) are slidably connected to the upper end and the lower end of each positioning strip (24), a sliding strip (23) is fixedly connected to the upper end of the positioning column (4), one end of the sliding strip (23) is rotationally connected with the baffle one (2), and a spring one (5) is fixedly connected between the sliding strip (23) and the positioning strip (24); The limit structure comprises a positioning rod (21), the positioning rod (21) is fixedly connected to the upper end of the sliding strip (23) and is slidably connected with the filter plate (6), and a baffle (22) is fixedly connected to the upper end of the positioning rod (21); The clamping structure comprises an embedded block (16), the embedded block (16) is slidably connected with the lower surface of the contact block (141), a spring two (17) is fixedly connected between the upper end of the embedded block (16) and the contact block (141), and an embedded groove (19) is formed in the lower surface of the filter plate (6) and can be inserted with the embedded block (16); A spring three (18) is fixedly connected to the end of each contact block (141) away from the nut seat (7) and is fixedly connected with the inner side wall of the limiting shell (14), and a push plate (32) is fixedly connected to the lower end of the nut seat (7) and can abut against the embedded block (16); The driving structure comprises a motor one (11), the motor one (11) is fixedly connected to the upper end of the connecting piece (10), the output end of the lower end of the connecting piece (10) is fixedly connected with a reciprocating screw rod (9), and the outer side wall of the reciprocating screw rod (9) is engaged with the nut seat (7); The pushing structure comprises a sleeve (12), the sleeve (12) is fixedly connected to the lower end of the connecting piece (10), the outer side wall of the sleeve (12) is symmetrically provided with two bevel blocks (13), the upper end of each of the abutting blocks (141) is fixedly connected with an inclined block (15), and the inclined block (15) can be pushed and slid by the bevel block (13).

2. The gas circulation device for laboratory air purification according to claim 1, characterized in that: The exhaust structure comprises an exhaust port (27), the exhaust port (27) is fixedly connected to the inner wall of the upper slot of the shell (1), the lower end of the exhaust port (27) is provided with an air suction assembly (26), and the air suction assembly (26) is fixedly connected to the inner side wall of the shell (1).

3. The gas circulation device for laboratory air purification according to claim 1, characterized in that: The outer side wall of the shell (1) is fixedly connected with an ash box (28), the inner cavity bottom of the ash box (28) is provided with a collecting plate (31) which can be inserted into the cavity of the shell (1), one end of the ash box (28) away from the shell (1) is fixedly connected with a motor two (29), the output end of the motor two (29) is fixedly connected with a threaded rod (30), and the threaded rod (30) is screwed with the collecting plate (31).

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