Cotton cloth drying equipment

Abstract

The utility model relates to the technical field of textile machinery, in particular to cotton cloth drying equipment, which not only can extract water vapor in the equipment in time to avoid influence on operation of the equipment caused by water vapor accumulation, but also can keep cotton cloth in a tensioning state at any time to ensure the drying effect. Comprising a water collecting mechanism; the device further comprises a winding mechanism, a tensioning mechanism, a lifting mechanism, a drying mechanism and two sets of air supply mechanisms, the winding mechanism is installed on the water collecting mechanism and used for winding cotton cloth, the tensioning mechanism is installed on the water collecting mechanism and used for tensioning the cotton cloth, and the lifting mechanism is installed on the tensioning mechanism and used for driving the tensioning mechanism to ascend and descend. The drying mechanism is installed on the water collecting mechanism and dries cotton cloth, and the two sets of air supply mechanisms are both installed on the drying mechanism and accelerate hot air flowing.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of textile machinery, in particular to a cotton cloth drying equipment. BACKGROUND

[0002] Cotton cloth is the cloth woven with cotton yarn, and is the general term of all kinds of cotton textiles, which is mostly used to make fashion clothes, casual clothes, underwear and shirts, and has the advantages of light and warm, soft and close-fitting, good moisture absorption and air permeability. The winding and drying equipment are commonly used in cotton cloth processing.

[0003] The existing cotton cloth drying equipment, for example, the cotton cloth winding and drying equipment disclosed in the utility model patent with the application number 202321395083.X, mainly comprises a mounting frame, a guide roller and a transmission roller rotatably installed on the inner side of the mounting frame, a clamping groove is formed in the upper end of the mounting frame, the drying equipment is provided with a transmission roller and a winding roller, a winding drum is sleeved on the winding roller, cotton cloth is wound on the winding drum through the transmission roller, a motor one drives the winding roller to rotate, movable plates are arranged on both sides of the equipment, an inner side of the movable plate is provided with a drying box, a motor two drives the movable plate to move left and right, the drying box can move to the inside of the equipment with the movable plate; in use, the winding drum is sleeved on the outer side of the winding roller, bearings are sleeved on both ends of the winding roller, the bearings are installed in the clamping groove from top to bottom, a rotating fastening screw is used to position the bearings, the cotton cloth is attached to the surfaces of the guide roller and the transmission roller and is wound on the outer side of the winding drum, the motor one is turned on through the control panel, the motor one drives the sprocket one to rotate, the sprocket one drives the sprocket two to rotate through the transmission chain, the winding roller rotates with the sprocket two to wind the cotton cloth, the motor two is turned on through the control panel, the motor two drives the gear one to rotate, the gear one drives the connecting rod to rotate through the gear two, the lead screw one and the lead screw two rotate with the connecting rod, the sliding sleeve guides the movable plate through the guide frame, the lead screw one and the lead screw two drive the two movable plates to move oppositely, the drying box moves with the movable plate, the drying box moves to the inside of the mounting frame through the through hole, the baking lamp is turned on through the control panel, and the baking lamp dries the cotton cloth in transmission.

[0004] However, the existing drying mechanism mostly does not timely extract water vapor, so that water vapor is accumulated in the device, which easily affects the normal operation of the equipment, and the cotton cloth has elasticity and is easily deformed during drying, and the existing drying mechanism is mostly difficult to adjust in time to keep the cotton cloth taut. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model provides a cotton cloth drying equipment which can not only timely extract water vapor in the device to avoid the influence of water vapor accumulation on the operation of the device, but also keep the cotton cloth in a taut state at any time to ensure the drying effect.

[0006] This utility model discloses a cotton fabric drying device, including a water collection mechanism; it also includes a winding mechanism, a tensioning mechanism, a lifting mechanism, a drying mechanism, and two sets of air supply mechanisms. The winding mechanism is installed on the water collection mechanism to wind up the cotton fabric, the tensioning mechanism is installed on the water collection mechanism to tension the cotton fabric, the lifting mechanism is installed on the tensioning mechanism to drive the tensioning mechanism to rise and fall, the drying mechanism is installed on the water collection mechanism to dry the cotton fabric, and both sets of air supply mechanisms are installed on the drying mechanism to accelerate the flow of hot air. The operator places the cotton fabric roll on the winding mechanism, which pulls the cotton fabric, and the cotton fabric wraps around the tensioning mechanism. The height of the tensioning mechanism is adjusted by the lifting mechanism to keep the cotton fabric in a taut state. The drying mechanism delivers hot air to the water collection mechanism to dry the cotton fabric. The two sets of air supply mechanisms accelerate the flow of hot air to enhance the drying effect. The dried cotton fabric is then wound up by the winding mechanism.

[0007] Preferably, the water collection mechanism includes a drying box, two sets of guide rollers, a one-way breathable membrane, a water collection tank, a drain pipe, and a valve. The bottom of the drying box is connected to the ground, and the inside of the drying box is equipped with a cavity. The drying box has an inlet and an outlet that are both connected to the cavity. The two sets of guide rollers are rotatably installed inside the cavity of the drying box. The one-way breathable membrane is installed at the bottom of the cavity of the drying box. The top of the water collection tank is connected to the bottom of the cavity of the drying box. The top of the drain pipe is connected to the bottom of the water collection tank. The valve is installed on the drain pipe. The cotton cloth enters the cavity of the drying box through the inlet. The drying mechanism, in conjunction with two sets of air supply mechanisms, dries the cotton cloth. Hot air flows from top to bottom, and water vapor enters the water collection tank through the one-way breathable membrane. After heat exchange between the water collection tank and the drying mechanism, the water vapor condenses. The operator opens the valve, and the condensate is discharged through the drain pipe.

[0008] Preferably, the winding mechanism includes two sets of placement platforms, a motor, a reducer, a connecting sleeve, and two sets of winding rollers. Both placement platforms are installed on the drying chamber and located at the feed inlet and discharge outlet of the drying chamber, respectively. Each placement platform has a limit groove. The motor is installed on the placement platform at the discharge outlet, and the reducer is also installed on the placement platform at the discharge outlet, with the output end of the motor connected to the input end of the reducer. The connecting sleeve is rotatably installed on the placement platform at the discharge outlet and is connected to the reducer via transmission. The two sets of winding rollers are rotatably installed within the limit grooves of the two placement platforms. The operator places the winding rollers fully loaded with cotton fabric on the placement platform at the feed inlet, then conveys the cotton fabric into the cavity of the drying chamber and winds it onto the tensioning mechanism. An unloaded winding roller is connected to the connecting sleeve via transmission. After the cotton fabric is discharged from the discharge outlet of the drying chamber, it is fixed onto the unloaded winding roller. The motor is started, and the motor drives the connecting sleeve to rotate via the reducer. The connecting sleeve drives the connected winding roller to rotate and wind up the cotton fabric.

[0009] Preferably, the tensioning mechanism comprises two sets of lead screw boxes, two sets of lead screws, two sets of sliding blocks and three sets of clamping rollers, the two sets of lead screw boxes are mounted in the cavity of the drying box, grooves are formed in the two sets of lead screw boxes, the two sets of lead screws are rotatably mounted in the grooves of the two sets of lead screw boxes, the two sets of sliding blocks are slidably mounted in the grooves of the two sets of lead screw boxes, and the three sets of clamping rollers are rotatably mounted between the two sets of sliding blocks; the staff places the full-load winding roller on the placing table of the feeding port, then conveys the cotton fabric into the cavity of the drying box and winds it on the tensioning mechanism, drives the empty winding roller in transmission connection with the connecting sleeve, and fixes the cotton fabric on the empty winding roller after discharging it from the discharging port of the drying box, starts the motor, and drives the connecting sleeve to rotate through the speed reducer, so that the connecting sleeve drives the winding roller connected therewith to rotate and winds the cotton fabric.

[0010] Preferably, the lifting mechanism comprises a double-head motor, two sets of first bevel gears, two sets of first bevel gears and two sets of second bevel gears, the bottom end of the double-head motor is connected with the top end of the drying box, the two sets of transmission shafts are connected with the output ends of the double-head motor, the two sets of first bevel gears are mounted on the two sets of transmission shafts respectively, and the two sets of second bevel gears are mounted on the two sets of lead screws respectively and are in meshing transmission with the two sets of first bevel gears respectively; the double-head motor is started to drive the two sets of transmission shafts to rotate, the two sets of transmission shafts drive the two sets of first bevel gears to rotate, and the two sets of first bevel gears and the two sets of second bevel gears are in meshing transmission, thereby driving the two sets of lead screws to rotate synchronously.

[0011] Preferably, the drying mechanism comprises a filter screen, a heat exchange pipe, an air inlet pipe, a warm air blower, an air conveying pipe and two sets of check valves, the filter screen is mounted on the drying box, the heat exchange pipe is mounted in the water collecting tank and communicates with the inside of the filter screen, the air inlet pipe communicates with the inside of the heat exchange pipe, the bottom end of the warm air blower is connected with the top end of the drying box, the air conveying pipe is mounted on the warm air blower, and the two sets of check valves are mounted on the air conveying pipe; air filtered by the filter screen enters the heat exchange pipe, cold air in the heat exchange pipe is heated by water vapor, and the water vapor is condensed at the same time, the warm air blower is started to draw the preheated air in the heat exchange pipe through the air inlet pipe for heating again, thereby saving the power consumption of the warm air blower, hot air is conveyed to the two sets of air supply mechanisms through the air conveying pipe, and the two sets of check valves are arranged to avoid backflow of the hot air.

[0012] Preferably, the air supply mechanism comprises a dust cover, a motor, a rotating shaft and three sets of fan blades, the bottom end of the dust cover communicates with the inside of the top end of the drying box, the motor is mounted on the dust cover, the rotating shaft is rotatably mounted on the dust cover and is in transmission connection with the motor, and the three sets of fan blades are mounted on the rotating shaft; the motor is started to drive the rotating shaft to rotate, the rotating shaft drives the three sets of fan blades to rotate, the three sets of fan blades accelerate the hot air to blow towards the cotton fabric, thereby enhancing the drying effect and enabling the hot air after drying to carry water vapor into the water collecting tank through the one-way air permeable film.

[0013] The beneficial effects of the utility model compared with prior art are: staff places cotton cloth roll on winding mechanism, winding mechanism drags cotton cloth, cotton cloth is wound on tensioning mechanism, winding mechanism adjusts tensioning mechanism height through lifting mechanism, cotton cloth is in tensioned state, drying mechanism sends hot air into water collecting mechanism to dry cotton cloth, two groups of air supply mechanism accelerate hot air flow, enhance drying effect, cotton cloth after drying is wound by winding mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the isometric structure schematic diagram of the utility model, and

[0015] Figure 2 It is the cross section isometric structure schematic diagram of water collecting mechanism and winding mechanism of the utility model, and

[0016] Figure 3 It is the partial enlarged isometric structure schematic diagram of winding mechanism of the utility model, and

[0017] Figure 4 It is the partial enlarged cross section isometric structure schematic diagram of tensioning mechanism and lifting mechanism of the utility model, and

[0018] Figure 5 It is the partial enlarged cross section isometric structure schematic diagram of drying mechanism of the utility model, and

[0019] Figure 6 It is the partial enlarged cross section isometric structure schematic diagram of drying mechanism and air supply mechanism of the utility model.

[0020] Markings in the drawings: 01, water collecting mechanism;11, drying box;12, guide roller;13, one-way air permeable film;14, water collecting tank;15, drain pipe;16, valve;02, winding mechanism;21, placing table;22, motor;23, speed reducer;24, connecting sleeve;25, winding roller;03, tensioning mechanism;31, screw box;32, lead screw;33, sliding block;34, clamping roller;04, lifting mechanism;41, double-head motor;42, transmission shaft;43, first bevel gear;44, second bevel gear;05, drying mechanism;51, filter screen;52, heat exchange pipe;53, air inlet pipe;54, fan heater;55, gas delivery pipe;56, check valve;06, air supply mechanism;61, dust cover;62, motor;63, rotating shaft;64, fan blade. DETAILED DESCRIPTION

[0021] In order to facilitate understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. The utility model can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0022] Example 1

[0023] The utility model relates to a cotton cloth drying equipment, including water collecting mechanism 01, still including winding mechanism 02, tensioning mechanism 03, hoisting mechanism 04, drying mechanism 05 and two groups of air supply mechanism 06, winding mechanism 02 installs on water collecting mechanism 01 and carries out winding to cotton cloth, tensioning mechanism 03 installs on water collecting mechanism 01 and makes cotton cloth tensioning, hoisting mechanism 04 installs on tensioning mechanism 03 and drives tensioning mechanism 03 to go up and down, drying mechanism 05 installs on water collecting mechanism 01 and carries out drying to cotton cloth, two groups of air supply mechanism 06 all install on drying mechanism 05 and accelerate hot -blast flow, water collecting mechanism 01 includes drying box 11, two groups of guide roller 12, one -way air -permeable membrane 13, water collecting tank 14, drain pipe 15 and valve 16, the bottom of drying box 11 is connected with ground, the inside of drying box 11 is provided with cavity, all with cavity inside intercommunication of drying box 11's top end and discharge port are opened, two groups of guide roller 12 all rotatoryly install in the cavity of drying box 11, one -way air -permeable membrane 13 installs in the cavity inside bottom end of drying box 11, water collecting tank 14's top end is connected with the cavity bottom end of drying box 11, the inside intercommunication of drain pipe 15's top end and water collecting tank 14's bottom end, valve 16 installs on drain pipe 15, winding mechanism 02 includes two groups of placing table 21, motor 22, speed reducer 23, connecting sleeve 24 and two groups of winding roller 25, two groups of placing table 21 all install on drying box 11 and are located drying box 11's inlet and discharge port respectively at, and two groups of placing table 21 all open limit slot on, motor 22 installs on the placing table 21 of discharge port, speed reducer 23 installs on the placing table 21 of discharge port and motor 22's output and speed reducer 23's input are connected, connecting sleeve 24 rotatoryly installs on the placing table 21 of discharge port and is transmission connection with speed reducer 23, two groups of winding roller 25 are rotatoryly installed in two groups of placing table 21's limit slot respectively, tensioning mechanism 03 includes two groups of screw box 31, two groups of lead screw 32, two groups of sliding block 33 and three groups of clamping roller 34, two groups of screw box 31 all install in the cavity of drying box 11, two groups of screw box 31 all open recess, two groups of lead screw 32 are rotatoryly installed in the recess of two groups of screw box 31 respectively, two groups of sliding block 33 are slidably installed in the recess of two groups of screw box 31 respectively, three groups of clamping roller 34 all rotatoryly install between two groups of sliding block 33, hoisting mechanism 04 includes double -end motor 41, two groups of first bevel gears 43, two groups of first bevel gears 43 and two groups of second bevel gears 44, double -end motor 41's bottom end is connected with drying box 11's top end, two groups of transmission shaft 42 all are connected with double -end motor 41's output, two groups of first bevel gears 43 are installed on two groups of transmission shaft 42 respectively, two groups of second bevel gears 44 are installed on two groups of lead screw 32 respectively and are engaged transmission with two groups of first bevel gears 43 respectively,The drying mechanism 05 comprises a filter screen 51, a heat exchange pipe 52, an air inlet pipe 53, a warm air blower 54, an air conveying pipe 55 and two sets of check valves 56, the filter screen 51 is installed on the drying box 11, the heat exchange pipe 52 is installed in the water collecting groove 14 and communicates with the inside of the filter screen 51, the air inlet pipe 53 communicates with the inside of the heat exchange pipe 52, the bottom end of the warm air blower 54 is connected with the top end of the drying box 11, the air conveying pipe 55 is installed on the warm air blower 54, and the two sets of check valves 56 are installed on the air conveying pipe 55; when working, first, the staff places the full-load cotton cloth winding roller 25 on the placing table 21 of the feeding port, then the cotton cloth is conveyed into the cavity of the drying box 11, the cotton cloth is wound between the three sets of clamping rollers 34 after passing through the guide roller 12, the drying area can be increased, the double-head motor 41 is started, the double-head motor 41 drives the two sets of transmission shafts 42 to rotate, the two sets of transmission shafts 42 drive the two sets of first bevel gears 43 to rotate, the two sets of first bevel gears 43 and the two sets of second bevel gears 44 are in meshing transmission, so that the two sets of lead screws 32 are driven to rotate synchronously, the two sets of lead screws 32 drive the two sets of sliding blocks 33 to ascend and descend, the adjustment according to the deformation amount of the cotton cloth is facilitated, the cotton cloth is always in a tension state in the cavity of the drying box 11, the drying effect is guaranteed, the air is filtered by the filter screen 51 and then enters the heat exchange pipe 52, the cold air in the heat exchange pipe 52 is heated by the water vapor, and the water vapor is condensed at the same time, the warm air blower 54 is started, the warm air blower 54 draws the preheated air in the heat exchange pipe 52 into the warm air blower 54 through the air inlet pipe 53 for heating again, the power consumption of the warm air blower 54 is saved, the hot air is conveyed to the two sets of air supply mechanisms 06 through the air conveying pipe 55, the hot air is prevented from flowing back through the setting of the two sets of check valves 56, the hot air flows from top to bottom, the water vapor enters the water collecting groove 14 through the one-way air permeable membrane 13, and the water vapor is condensed after heat exchange between the water collecting groove 14 and the drying mechanism 05, the staff opens the valve 16, and the condensed water is discharged through the drain pipe 15.

[0024] Example 2

[0025] As Figures 1 to 6As shown, the cotton drying equipment of the utility model, on the basis of embodiment 1;Air supply mechanism 06 includes dust cover 61, motor 62, shaft 63 and three groups of fan blades 64, the bottom end of dust cover 61 is communicated with the top end inside drying box 11, motor 62 is installed on dust cover 61, shaft 63 is rotatably installed on dust cover 61 and is transmission connection with motor 62, three groups of fan blades 64 are all installed on shaft 63;When it works, first, the staff places the full load cotton cloth winding roller 25 on the placing table 21 of feed inlet, then the cotton cloth is transported to the cavity of drying box 11, and the cotton cloth is wound between three groups of clamping rollers 34 after passing through guide roller 12, the drying area can be increased, the double-head motor 41 is started, the double-head motor 41 drives two groups of transmission shafts 42 to rotate, two groups of transmission shafts 42 drive two groups of first bevel gears 43 to rotate, two groups of first bevel gears 43 and two groups of second bevel gears 44 mesh transmission, thereby driving two groups of lead screws 32 to rotate synchronously, two groups of lead screws 32 drive two groups of sliding blocks 33 to lift, which is convenient for adjusting according to the deformation of cotton cloth, so that the cotton cloth is always in the tension state in the cavity of drying box 11, the drying effect is guaranteed, the air is filtered by filter screen 51 and then enters heat exchange pipe 52, the cold air in heat exchange pipe 52 is heated by water vapor, and the water vapor is condensed at the same time, the air heater 54 is started, the air heater 54 draws the preheated air in heat exchange pipe 52 through the air inlet pipe 53 and heats it again, which saves the power consumption of the air heater 54, the hot air is transported into two groups of air supply mechanisms 06 through the air conveying pipe 55, the hot air is prevented from flowing back by setting two groups of check valves 56, the motor 62 is started, the motor 62 drives the shaft 63 to rotate, the shaft 63 drives the three groups of fan blades 64 to rotate, the three groups of fan blades 64 accelerate the hot air to blow towards the cotton cloth, which enhances the drying effect, the hot air flows from top to bottom, and the water vapor enters the water collecting tank 14 through the one-way air permeable membrane 13, and is condensed after heat exchange between the water collecting tank 14 and the drying mechanism 05, the staff opens the valve 16, and the condensed water is discharged through the drain pipe 15.

[0026] The motor 22, the speed reducer 23 and the motor 62 of the utility model are purchased on the market, and the technical personnel in the industry only needs to install and operate according to the attached instruction manual, without the technical personnel in the field paying creative labor.

[0027] The above only describes the preferred embodiments of the utility model, and it should be pointed out that for ordinary technical personnel in the technical field, without departing from the technical principles of the utility model, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the utility model.

Claims

1. A cotton cloth drying apparatus comprising a water collecting mechanism (01); characterized in that, It also includes winding mechanism (02), tensioning mechanism (03), lifting mechanism (04), drying mechanism (05) and two groups of air supply mechanism (06), winding mechanism (02) is installed on the water collecting mechanism (01) and winding cotton cloth, tensioning mechanism (03) is installed on the water collecting mechanism (01) and makes cotton cloth tension, lifting mechanism (04) is installed on the tensioning mechanism (03) and drives the tensioning mechanism (03) to lift, drying mechanism (05) is installed on the water collecting mechanism (01) and dries cotton cloth, two groups of air supply mechanism (06) are installed on the drying mechanism (05) and accelerate hot air flow.

2. A cotton drying apparatus as claimed in claim 1, wherein, The water collecting mechanism (01) includes a drying box (11), two groups of guide rollers (12), a one-way breathable film (13), a water collecting tank (14), a drain pipe (15) and a valve (16), the bottom end of the drying box (11) is connected with the ground, the inside of the drying box (11) is provided with a cavity, the drying box (11) is provided with an inlet and a discharge port, which are communicated with the inside of the cavity, the two groups of guide rollers (12) are rotatably installed in the cavity of the drying box (11), the one-way breathable film (13) is installed at the bottom end of the cavity of the drying box (11), the top end of the water collecting tank (14) is connected with the bottom end of the cavity of the drying box (11), the top end of the drain pipe (15) is communicated with the inside of the bottom end of the water collecting tank (14), and the valve (16) is installed on the drain pipe (15).

3. A cotton drying apparatus as claimed in claim 2, wherein, The winding mechanism (02) includes two groups of placing tables (21), a motor (22), a speed reducer (23), a connecting sleeve (24) and two groups of winding rollers (25), the two groups of placing tables (21) are installed on the drying box (11) and are respectively located at the inlet and the discharge port of the drying box (11), and the two groups of placing tables (21) are all provided with limiting grooves, the motor (22) is installed on the placing table (21) of the discharge port, the speed reducer (23) is installed on the placing table (21) of the discharge port, and the output end of the motor (22) is connected with the input end of the speed reducer (23), the connecting sleeve (24) is rotatably installed on the placing table (21) of the discharge port and is in transmission connection with the speed reducer (23), and the two groups of winding rollers (25) are rotatably installed in the limiting grooves of the two groups of placing tables (21).

4. A cotton drying apparatus as claimed in claim 2, wherein, The tensioning mechanism (03) includes two groups of lead screw boxes (31), two groups of lead screws (32), two groups of sliding blocks (33) and three groups of clamping rollers (34), the two groups of lead screw boxes (31) are installed in the cavity of the drying box (11), the two groups of lead screw boxes (31) are all provided with grooves, the two groups of lead screws (32) are rotatably installed in the grooves of the two groups of lead screw boxes (31), the two groups of sliding blocks (33) are slidably installed in the grooves of the two groups of lead screw boxes (31), and the three groups of clamping rollers (34) are rotatably installed between the two groups of sliding blocks (33).

5. A cotton drying apparatus as claimed in claim 4, wherein, The lifting mechanism (04) comprises a double-head motor (41), two groups of first bevel gears (43), two groups of first bevel gears (43) and two groups of second bevel gears (44), the bottom end of the double-head motor (41) is connected with the top end of the drying box (11), two groups of transmission shafts (42) are connected with the output end of the double-head motor (41), two groups of first bevel gears (43) are installed on two groups of transmission shafts (42) respectively, two groups of second bevel gears (44) are installed on two groups of lead screws (32) respectively and are engaged with two groups of first bevel gears (43) respectively.

6. A cotton cloth drying apparatus as claimed in claim 2, wherein, The drying mechanism (05) comprises a filter screen (51), a heat exchange pipe (52), an air inlet pipe (53), a hair dryer (54), a gas conveying pipe (55) and two groups of check valves (56), the filter screen (51) is installed on the drying box (11), the heat exchange pipe (52) is installed in the water collecting tank (14) and communicates with the inside of the filter screen (51), the air inlet pipe (53) communicates with the inside of the heat exchange pipe (52), the bottom end of the hair dryer (54) is connected with the top end of the drying box (11), the gas conveying pipe (55) is installed on the hair dryer (54), and the two groups of check valves (56) are installed on the gas conveying pipe (55).

7. A cotton drying apparatus as claimed in claim 2, wherein, The air supply mechanism (06) comprises a dust cover (61), a motor (62), a rotating shaft (63) and three groups of fan blades (64), the bottom end of the dust cover (61) communicates with the inside of the top end of the drying box (11), the motor (62) is installed on the dust cover (61), the rotating shaft (63) is rotatably installed on the dust cover (61) and is in transmission connection with the motor (62), and the three groups of fan blades (64) are installed on the rotating shaft (63).

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