CN209953404U

CN209953404U - Lithium cell electricity core dust collector

Info

Publication number: CN209953404U
Application number: CN201920510731.9U
Authority: CN
Inventors: 朱一虎
Original assignee: Guangdong Jia Tuo Amperex Technology Ltd
Current assignee: Guangdong Jia Tuo Amperex Technology Ltd
Priority date: 2019-04-16
Filing date: 2019-04-16
Publication date: 2020-01-17
Anticipated expiration: 2029-04-16

Abstract

The utility model discloses a lithium battery cell dust collector, including a supporting bench, driving shaft, driven shaft and windshield, the top of supporting bench is equipped with two first supporting seats and two second supporting seats, and the top of first supporting seat alternates and is equipped with the driving shaft, and the cover is equipped with two driving pulley on the driving shaft, and the top of second supporting seat alternates and is equipped with the driven shaft, and the cover is equipped with two driven pulley on the driven shaft; a wind shield is arranged above the supporting platform, an air inlet pipe is inserted into the top end of the wind shield, and a plurality of air outlet heads are uniformly distributed at the bottom end of the air inlet pipe. The utility model discloses set up driver plate and sheave and driven first belt and the intermittent type rotation of second belt, the time that electric core stops in the windshield is longer, and the effectual of dust removal, the workman of also being convenient for is when first belt and second belt stop moving, to the assembly and the dismantlement of electric core.

Description

Lithium cell electricity core dust collector

Technical Field

The utility model relates to a lithium cell production technical field specifically is a lithium cell electricity core dust collector.

Background

The lithium battery has the advantages of high energy density, long service life, environmental friendliness and the like, and is widely applied to the fields of electronic equipment and new energy automobiles. The structure of lithium cell mainly comprises electric core and the insulating crust of package on electric core, when carrying out the wraparound process to electric core, if there is granule foreign matter such as dust on electric core surface, will lead to electric core and the incomplete contact of crust, probably causes electric core insulating bad and electric core weeping, appears electric core short circuit even and catches fire, phenomenons such as explosion, has a great deal of potential safety hazard. Therefore, before the cell is subjected to the winding process, the surface of the cell needs to be subjected to dust removal treatment. The dust removal mode to electric core among the prior art generally adopts artifical dust removal, and dust removal effect is unsatisfactory and workman's intensity of labour has been increased. Some automatic dust removal devices for the battery cell also have many defects, for example, the device cannot remove dust on all surfaces of the battery cell at one time, needs to turn over the battery cell for many times, and is low in dust removal efficiency. Some dust removal devices do not treat the dust laden air streams during the dust removal process, causing these air streams to escape with the dust into the air, affecting the clean environment of the studio.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lithium cell electricity core dust collector to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a lithium battery cell dust removal device comprises a supporting table, a driving belt pulley, a driven belt pulley, a driving shaft, a driven shaft, a clamp, a wind shield and a dust adhering wheel, wherein two first supporting seats which are symmetrical front and back are arranged above the supporting table, the bottom of each first supporting seat is fixedly arranged at the position, close to the right end, of the upper surface of the supporting table, two second supporting seats which are symmetrical front and back are arranged above the supporting table, and the bottom of each second supporting seat is fixedly arranged at the position, close to the left end, of the upper surface of the supporting table; the driving shaft is inserted into the top of the first supporting seat, the driving shaft is sleeved with two driving belt wheels, the two driving belt wheels are positioned between the two first supporting seats and are symmetrically arranged in the front and back direction, the driven shaft is inserted into the top of the second supporting seat, the driven shaft is sleeved with two driven belt wheels, the two driven belt wheels are positioned between the two second supporting seats and are symmetrically arranged in the front and back direction, the driving belt wheel and the driven belt wheel positioned on the front side are sleeved with first belts, and the driving belt wheel and the driven belt wheel positioned on the rear side are sleeved with second belts; the driving shaft is sleeved with a grooved wheel, the grooved wheel is arranged between a driving belt wheel positioned on the front side and a first supporting seat positioned on the front side, the grooved wheel and the driving plate are installed in a matched mode, and the front side of the driving plate is connected with a motor through a motor shaft; a wind shield is arranged above the supporting table, the bottom end of the wind shield is fixedly connected with the upper surface of the supporting table through screws, an air inlet pipe is inserted into the top end of the wind shield, the bottom end of the air inlet pipe is arranged inside the wind shield, and a plurality of air outlet heads are uniformly distributed at the bottom end of the air inlet pipe; a filter plate is arranged in the windshield, the filter plate is arranged between the upper section of the belt and the lower section of the belt, the front side of the filter plate penetrates through the front side wall of the windshield, and a plurality of ash sticking wheels which are arranged at equal intervals are arranged above the filter plate; the front side wall of the windshield is fixedly connected with the bottom end of the adjusting plate, the front side and the rear side of the adjusting plate are provided with supporting frames, the top ends of the supporting frames are fixedly connected with the top end of the adjusting plate, and the bottom ends of the supporting frames are fixedly connected with the front side wall of the windshield.

As a further aspect of the present invention: the wind shield is a hollow rectangular box body erected on the front side and the rear side of the first belt and the second belt, and the adjusting plate is an upward convex arc-shaped plate.

As a further aspect of the present invention: a plurality of connecting frames are arranged between the first belt and the second belt, the connecting frames are divided into two groups, a clamp is arranged between the two connecting frames of each group of connecting frames, and the clamp comprises a first rotating shaft, a first clamping plate, a second rotating shaft, a second clamping plate and a connecting belt; the left end interlude of first axis of rotation sets up the middle part in every group link left side link, the right-hand member of first axis of rotation is connected with the left end of first splint, the right-hand member interlude of second axis of rotation sets up the middle part in every group link right side link, the left end of second axis of rotation is connected with the right-hand member of second splint, first splint and second splint bilateral symmetry set up, be equipped with the connecting band between first splint and the second splint, the connecting band is total two, two connecting bands set up both sides around first splint and second splint respectively, the connecting band is made by soft rubber.

As a further aspect of the present invention: the center of the driving plate is connected with the motor through a motor shaft, a driving lever is arranged at the rear side of the driving plate, one end, facing the circle of the driving plate, of the driving lever is fixedly connected with the circle center of the driving plate, and a round pin is arranged at one end, facing away from the circle of the driving plate, of the driving lever; the center of the grooved wheel is inserted with a driving shaft, four sections of locking arcs are arranged on the circumference of the grooved wheel, a wheel groove is arranged between every two locking arcs, the locking arcs are concave arc surfaces, the locking arcs are matched with the outer circular surface of the driving plate, and the width of the wheel groove is matched with the round pin.

As a further aspect of the present invention: glue grey wheel and include stopper, back shaft, rotary drum and impeller, both ends alternate respectively around the back shaft and set up on the lateral wall around the windshield, and the stopper setting is equipped with the rotary drum at the front end of back shaft on the back shaft, and the cover is equipped with the rotary drum on the back shaft, and the outer face of cylinder scribbles glue, and the cover is equipped with two impellers on the back shaft, and two impellers are fixed respectively and set up in the front and back both ends of rotary drum.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model discloses set up driver plate and sheave and drive first belt and the intermittent rotation of second belt, the time that electric core stays in the windshield is longer, the effectual of dust removal, and the intermittent removal of electric core also is convenient for the workman when first belt and second belt stop moving, assemble the electric core on the anchor clamps, also is convenient for dismantle the electric core by anchor clamps, form the assembly line to electric core dust removal; the utility model discloses set up can the pivoted anchor clamps to carry out the centre gripping to electric core, in the dust removal process to electric core at the high velocity draught, electric core can rotate along with anchor clamps for the dust on each face of electric core can both be washed away cleanly, removes dust more thoroughly; the utility model discloses set up and glue the ash wheel and the air current of filter plate after removing dust and removed dust and handled, prevented to press from both sides the high-speed air current who takes the dust and blow off the dust once more and scatter the air in, prevent that these dust from polluting the electric core that has removed dust once more to glue ash wheel and filter plate and all set up to dismantling, make things convenient for the deashing of workman to gluing ash wheel and filter plate.

Drawings

Fig. 1 is a schematic perspective view of a lithium battery cell dust removal device.

Fig. 2 is a front view of a lithium battery cell dust removal device.

Fig. 3 is a side view of a lithium battery cell dust removal device.

Fig. 4 is a top view of a lithium battery cell dust removal device.

Fig. 5 is a schematic view of a three-dimensional structure of a lithium battery cell dust removal device after a windshield is removed.

Fig. 6 is a front view of fig. 5.

Fig. 7 is an assembly front view of a driving plate and a grooved wheel in a lithium battery cell dust removing device.

Fig. 8 is an assembled rear view of a dial and a sheave in a lithium battery cell dust removal device.

Fig. 9 is a schematic perspective structure diagram of a clamp in a lithium battery cell dust removal device.

In the figure: 1. a support table; 2. a first support base; 3. a second support seat; 4. a driving pulley; 5. a driven pulley; 6. a first belt; 7. a second belt; 8. a drive shaft; 9. a driven shaft; 10. a motor; 11. a dial; 111. a motor shaft; 112. a deflector rod; 113. a round pin; 12. a grooved wheel; 121. locking an arc; 122. a wheel groove; 13. a connecting frame; 14. a clamp; 141. a first rotating shaft; 142. a first splint; 143. a second rotating shaft; 144. a second splint; 145. a connecting belt; 15. a windshield; 16. an air inlet pipe; 17. a screw; 18. a filter plate; 19. a dust sticking wheel; 191. a limiting block; 192. a support shaft; 193. a rotating drum; 194. an impeller; 20. an adjustment plate; 21. a support frame; 22. and (4) an air outlet head.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Referring to fig. 1-9, a lithium battery cell dust removal device comprises a support table 1, a driving pulley 4, a driven pulley 5, a driving shaft 8, a driven shaft 9, a clamp 14, a windshield 15 and a dust adhering wheel 19, wherein two first support seats 2 which are symmetrical front and back are arranged above the support table 1, the bottom of each first support seat 2 is fixedly arranged at a position, close to the right end, on the upper surface of the support table 1, two second support seats 3 which are symmetrical front and back are arranged above the support table 1, and the bottom of each second support seat 3 is fixedly arranged at a position, close to the left end, on the upper surface of the support table 1; a driving shaft 8 is inserted into the top of the first support seat 2, two driving pulleys 4 are sleeved on the driving shaft 8, the two driving pulleys 4 are positioned between the two first support seats 2, the two driving pulleys 4 are symmetrically arranged in the front and back directions, a driven shaft 9 is inserted into the top of the second support seat 3, two driven pulleys 5 are sleeved on the driven shaft 9, the two driven pulleys 5 are positioned between the two second support seats 3, the two driven pulleys 5 are symmetrically arranged in the front and back directions, a first belt 6 is sleeved on the driving pulley 4 and the driven pulley 5 which are positioned on the front side, and a second belt 7 is sleeved on the driving pulley 4 and the driven pulley 5 which are positioned on the rear side; the cover is equipped with sheave 12 on the driving shaft 8, sheave 12 sets up between the driving pulley 4 that is located the front side and the first supporting seat 2 that is located the front side, sheave 12 and the 11 cooperation installations of driver plate, the front side of driver plate 11 is passed through motor shaft 111 and is connected with motor 10, motor 10 passes through sheave 12 and driver plate 11 and drives driving shaft 8 and rotate, driving shaft 8 drives two driving pulleys 4 and rotates, two driving pulley 4 drive two driven pulleys 5 through first belt 6 and second belt 7 and rotate.

A wind shield 15 is arranged above the supporting table 1, the wind shield 15 is a hollow rectangular box body erected on the front side and the rear side of the first belt 6 and the second belt 7, the bottom end of the wind shield 15 is fixedly connected with the upper surface of the supporting table 1 through a screw 17, an air inlet pipe 16 is inserted into the top end of the wind shield 15, the bottom end of the air inlet pipe 16 is arranged inside the wind shield 15, a plurality of air outlets 22 are uniformly distributed at the bottom end of the air inlet pipe 16, the air inlet pipe 16 can be externally connected with a high-pressure air pipeline, and compressed air enters the wind shield 15 through the air inlet pipe 16 and is sprayed out of the air outlets 22; a filter plate 18 is arranged in the windshield 15, the filter plate 18 is arranged between the upper and lower sections of the first belt 6 and the second belt 7, the front side of the filter plate 18 penetrates through the front side wall of the windshield 15, a user can draw out the filter plate 18 from the front side wall of the windshield 15, the filter plate 18 is convenient to clean by the user, and a plurality of ash sticking wheels 19 which are arranged at equal intervals are arranged above the filter plate 18.

A plurality of connecting frames 13 are arranged between the first belt 6 and the second belt 7, the connecting frames 13 are divided into two groups, a clamp 14 is arranged between the two connecting frames 13 of each group of connecting frames 13, and the clamp 14 comprises a first rotating shaft 141, a first clamping plate 142, a second rotating shaft 143, a second clamping plate 144 and a connecting belt 145; the left end of the first rotating shaft 141 is inserted into the middle of the left connecting frame 13 in each set of connecting frames 13, the first rotating shaft 141 can move left and right in the middle of the connecting frames 13, the right end of the first rotating shaft 141 is connected with the left end of the first clamping plate 142, the first clamping plate 142 can rotate around the first rotating shaft 141, the right end of the second rotating shaft 143 is inserted into the middle of the right connecting frame 13 in each set of connecting frames 13, the second rotating shaft 143 can move left and right in the middle of the connecting frames 13, the left end of the second rotating shaft 143 is connected with the right end of the second clamping plate 144, the second clamping plate 144 can rotate around the second rotating shaft 143, the first clamping plate 142 and the second clamping plate 144 are arranged in bilateral symmetry, the connecting belts 145 are arranged between the first clamping plate 142 and the second clamping plate 144, the number of the connecting belts 145 is two, the two connecting belts 145 are respectively arranged on the front and back sides of the first clamping plate 142 and, the connecting band 145 made of soft rubber has better pliability and elasticity, sets up the electric core in anchor clamps 14, and the high-speed air current blown by air outlet 22 blows electric core and anchor clamps 14, can make first splint 142 and second splint 144 drive the electric core and rotate around first axis of rotation 141.

The preceding lateral wall of windshield 15 and the bottom fixed connection of adjusting plate 20, adjusting plate 20 is the epirelief arc, both sides are equipped with support frame 21 around adjusting plate 20, the top of support frame 21 and the top fixed connection of adjusting plate 20, the bottom of support frame 21 and the preceding lateral wall fixed connection of windshield 15, two support frames 21 play the supporting role to adjusting plate 20, when the anchor clamps 14 and the electric core of rotation state along with first belt 6 and second belt 7 remove and touch adjusting plate 20 left, anchor clamps 14 and electric core can stop rotating, and adjust to horizontal locating position along the cambered surface of adjusting plate 20, be convenient for the staff to the dismouting of electric core.

As shown in fig. 5, the dust-sticking wheel 19 includes a limiting block 191, a supporting shaft 192, a rotating drum 193 and an impeller 194, the front end and the rear end of the supporting shaft 192 are respectively inserted into the front side wall and the rear side wall of the windshield 15, the limiting block 191 is arranged at the front end of the supporting shaft 192, the rotating drum 193 is sleeved on the supporting shaft 192, glue is coated on the outer cylindrical surface of the rotating drum 193, the rotating drum 193 can rotate around the supporting shaft 192, two impellers 194 are sleeved on the supporting shaft 192, the two impellers 194 are respectively fixed at the front end and the rear end of the rotating drum 193, the impellers 194 can rotate around the supporting shaft 192 along with the rotating drum 193, the impellers 194 can be driven to rotate by high-speed airflow blown out by the air outlet 22, the rotating drum, and the ash sticking wheel 19 can be taken out from the windshield 15 through the limiting block 191, so that a user can clean and glue the rotating drum 193 conveniently.

As shown in fig. 7 and 8, the center of the dial 11 is connected with the motor 10 through a motor shaft 111, a shift lever 112 is arranged at the rear side of the dial 11, one end of the shift lever 112 facing the circle of the dial 11 is fixedly connected with the circle center of the dial 11, and one end of the shift lever 112 facing away from the circle of the dial 11 is provided with a round pin 113; the driving shaft 8 is inserted in the center of the grooved wheel 12, four locking arcs 121 are arranged on the circumference of the grooved wheel 12, a wheel groove 122 is arranged between every two locking arcs 121, each locking arc 121 is an inward concave arc, the locking arcs 121 are matched with the outer circular surface of the driving plate 11, the width of each wheel groove 122 is matched with the corresponding round pin 113, when the driving plate 11 rotates and the round pins 113 enter the wheel grooves 122, the driving plate 11 can drive the grooved wheel 12 to rotate through the driving rod 112, along with the rotation of the driving plate 11, when the round pins 113 are separated from the wheel grooves 122, the outer circular surface of the driving plate 11 can be attached to the locking arcs 121 of the grooved wheel 12, and the grooved wheel 12 stops rotating, so that the intermittent transmission effect is formed.

In the use process of the utility model, a worker firstly starts the motor 10, the grooved wheel 12 and the driving plate 11 form intermittent transmission, and the first belt 6 and the second belt 7 drive the clamp 14 to intermittently step from right to left; assembling and disassembling the battery cell by a worker when the first belt 6 and the second belt 7 are stopped, pulling the first clamping plate 142 and the second clamping plate 144 apart by the worker against the elastic force of the connecting band 145 and putting the battery cell therein, and then releasing the worker, wherein the battery cell is clamped between the first clamping plate 142 and the second clamping plate 144 by the elastic force of the connecting band 145; when the battery cell and the clamp 14 enter the windshield 15, due to the high-speed airflow blown out by the air outlet head 22, the first clamping plate 142 and the second clamping plate 144 drive the battery cell to rotate around the first rotating shaft 141, in the rotating process of the battery cell, the high-speed airflow can wash out dust on each surface of the battery cell, when the airflow mixed with the dust flows downwards and passes through the dust adhering wheel 19, most of the dust can be adhered by the dust adhering wheel 19, and when the residual dust passes through the filter plate 18 along with the airflow, the residual dust can be filtered by the filter plate 18; after the dust removal, the clamp 14 with the battery cell continues to move to the right, the clamp 14 and the battery cell which are still in the rotating state due to inertia are blocked by the adjusting plate 20 to be adjusted to the horizontal placing position, and then the worker removes the battery cell from the clamp 14.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. A lithium battery cell dust removal device comprises a support table (1), a driving belt pulley (4), a driven belt pulley (5), a driving shaft (8), a driven shaft (9), a clamp (14), a wind shield (15) and an ash adhering wheel (19), and is characterized in that two first support seats (2) which are symmetrical in the front-back direction are arranged above the support table (1), the bottom of each first support seat (2) is fixedly arranged at a position, close to the right end, on the upper surface of the support table (1), two second support seats (3) which are symmetrical in the front-back direction are arranged above the support table (1), and the bottom of each second support seat (3) is fixedly arranged at a position, close to the left end, on the upper surface of the support table (1); the driving shaft (8) is arranged at the top of the first supporting seat (2) in an inserting mode, two driving belt wheels (4) are sleeved on the driving shaft (8), the two driving belt wheels (4) are located between the two first supporting seats (2) and are symmetrically arranged in the front and back direction of the two driving belt wheels (4), a driven shaft (9) is arranged at the top of the second supporting seat (3) in an inserting mode, two driven belt wheels (5) are sleeved on the driven shaft (9), the two driven belt wheels (5) are located between the two second supporting seats (3) and are symmetrically arranged in the front and back direction of the two driven belt wheels (5), a first belt (6) is sleeved on the driving belt wheel (4) and the driven belt wheel (5) located on the front side, and a second belt (7) is sleeved on the driving belt wheel (4; a grooved wheel (12) is sleeved on the driving shaft (8), the grooved wheel (12) is arranged between the driving belt wheel (4) positioned on the front side and the first supporting seat (2) positioned on the front side, the grooved wheel (12) and the driving plate (11) are installed in a matched mode, and the front side of the driving plate (11) is connected with the motor (10) through a motor shaft (111); a wind shield (15) is arranged above the supporting platform (1), the bottom end of the wind shield (15) is fixedly connected with the upper surface of the supporting platform (1) through a screw (17), an air inlet pipe (16) is inserted into the top end of the wind shield (15), the bottom end of the air inlet pipe (16) is arranged inside the wind shield (15), and a plurality of air outlet heads (22) are uniformly distributed at the bottom end of the air inlet pipe (16); a filter plate (18) is arranged in the wind shield (15), the filter plate (18) is arranged between the upper section of the belt and the lower section of the belt of the first belt (6) and the second belt (7), the front side of the filter plate (18) penetrates through the front side wall of the wind shield (15), and a plurality of ash sticking wheels (19) which are arranged at equal intervals are arranged above the filter plate (18); the front side wall of the windshield (15) is fixedly connected with the bottom end of the adjusting plate (20), supporting frames (21) are arranged on the front side and the rear side of the adjusting plate (20), the top end of each supporting frame (21) is fixedly connected with the top end of the adjusting plate (20), and the bottom end of each supporting frame (21) is fixedly connected with the front side wall of the windshield (15).

2. The lithium battery cell dedusting device of claim 1, wherein the windshield (15) is a hollow rectangular box body erected at the front side and the rear side of the first belt (6) and the second belt (7), and the adjusting plate (20) is an upward convex arc-shaped plate.

3. The lithium battery cell dedusting device according to claim 1, wherein a plurality of connecting frames (13) are arranged between the first belt (6) and the second belt (7), the connecting frames (13) are divided into two groups, a clamp (14) is arranged between the two connecting frames (13) of each group of connecting frames (13), and each clamp (14) comprises a first rotating shaft (141), a first clamping plate (142), a second rotating shaft (143), a second clamping plate (144) and a connecting belt (145); the left end of first axis of rotation (141) alternates and sets up in the middle part of left side link (13) in every group link (13), the right-hand member of first axis of rotation (141) is connected with the left end of first splint (142), the right-hand member of second axis of rotation (143) alternates and sets up in the middle part of right side link (13) in every group link (13), the left end of second axis of rotation (143) is connected with the right-hand member of second splint (144), first splint (142) and second splint (144) bilateral symmetry set up, be equipped with connecting band (145) between first splint (142) and second splint (144), connecting band (145) are total two, two connecting bands (145) set up the front and back both sides at first splint (142) and second splint (144) respectively, connecting band (145) are made by soft rubber.

4. The lithium battery cell dedusting device according to claim 1, wherein the center of the dial plate (11) is connected with the motor (10) through a motor shaft (111), a shift lever (112) is arranged at the rear side of the dial plate (11), one end of the shift lever (112) facing the circular shape of the dial plate (11) is fixedly connected with the center of the dial plate (11), and one end of the shift lever (112) facing away from the circular shape of the dial plate (11) is provided with a round pin (113); the driving shaft (8) is inserted into the center of the grooved wheel (12), four sections of locking arcs (121) are arranged on the circumference of the grooved wheel (12), a wheel groove (122) is arranged between every two locking arcs (121), each locking arc (121) is an inwards concave arc surface, the locking arcs (121) are matched with the outer circular surface of the driving plate (11), and the width of each wheel groove (122) is matched with the round pin (113).

5. The lithium battery cell dedusting device according to claim 1, wherein the ash adhering wheel (19) comprises a limiting block (191), a supporting shaft (192), a rotary drum (193) and impellers (194), the front end and the rear end of the supporting shaft (192) are respectively inserted into the front side wall and the rear side wall of the windshield (15), the limiting block (191) is arranged at the front end of the supporting shaft (192), the rotary drum (193) is sleeved on the supporting shaft (192), the outer cylindrical surface of the rotary drum (193) is coated with glue, the supporting shaft (192) is sleeved with two impellers (194), and the two impellers (194) are respectively and fixedly arranged at the front end and the rear end of the rotary drum (193).