EVA particle drying device for EVA photovoltaic packaging adhesive film production

Abstract

The utility model relates to the technical field of EVA (Ethylene Vinyl Acetate) particle drying, and discloses an EVA particle drying device for producing an EVA photovoltaic packaging adhesive film, which comprises a drying box and supporting legs fixedly arranged at the bottom of the drying box and close to four corners, and an air heater is fixedly arranged at the top of the drying box and close to the left side. The output end of the air heater fixedly penetrates and extends into an inner cavity of the drying box, and a feeding frame is fixedly installed at the position, close to the right side, of the top of the drying box in a penetrating mode. Through mutual cooperation of a threaded rod, a threaded sleeve, a guide plate, a guide rod, a synchronous belt B, a servo motor, an L-shaped plate, a rotating rod, a movable gear, a rack plate, a transmission bevel gear, a rotating bevel gear, a stirring rod and a stirring shaft, the stirring shaft and the stirring rod can be driven to move left and right back and forth in the drying box and can also rotate at the same time; and therefore, the added particles can be stirred and dispersed, all the particles can make full contact with hot air, the particle drying efficiency is improved, and the using effect is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of EVA particle drying, in particular to an EVA particle drying device for EVA photovoltaic packaging adhesive film production. BACKGROUND

[0002] EVA (polyethylene-vinyl acetate resin) adhesive film is the most commonly used material in the current solar packaging process, generally produced by extrusion-calendering or extrusion-flowing method, and the production process includes melt blending, extrusion, calendering, traction and winding, etc. Its physical and mechanical properties mainly include transparency, tensile strength, aging resistance, shrinkage, etc.

[0003] The existing EVA particle drying device for EVA photovoltaic packaging adhesive film production directly adds all the particles that need to be dried during use, which can cause low particle drying efficiency. In addition, the existing stirring method is single, and the particles are unevenly heated during drying, affecting the drying effect.

[0004] Therefore, we propose an EVA particle drying device for EVA photovoltaic packaging adhesive film production to solve the problems mentioned above. SUMMARY

[0005] The utility model aims at providing an EVA particle drying device for EVA photovoltaic packaging adhesive film production to solve the problems mentioned in the background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an EVA particle drying device for EVA photovoltaic packaging adhesive film production, including drying box and fixed installation in drying box bottom near four corners support leg, drying box's top near left side place fixed mounting has hot blast engine, and the output end of hot blast engine is fixedly extended into the inner cavity of drying box, the inner cavity of drying box is fixedly installed with feeding frame near the right side of the top, the inner cavity of feeding frame is installed with opening and closing assembly near the bottom, the inner cavity of drying box is installed with dispersion assembly near the top;

[0007] The dispersion assembly comprises two threaded rods arranged close to the top in the inner cavity of the drying box, the threaded rods are arranged front and back, the right ends of the threaded rods are movably installed on the inner wall of the inner cavity of the drying box respectively, the left ends of the threaded rods extend movably to the outside of the drying box respectively, the outside of the threaded rods close to the right ends is respectively threadedly installed with a threaded sleeve, and the output ends of the threaded rods are respectively fixedly sleeved with synchronous wheels A, the outside of the synchronous wheels A is jointly sleeved with a synchronous belt B, the left end of the front threaded rod is provided with a servo motor, the output end of the servo motor is fixedly connected with the left end of the front threaded rod, the opposite side of the threaded sleeve is jointly rotatably installed with a rotating rod, the front and back ends of the outer side of the rotating rod are respectively fixedly sleeved with transmission bevel gears, the bottoms of the transmission bevel gears are respectively engaged with rotating bevel gears, the middle parts of the bottoms of the rotating bevel gears are respectively fixedly installed with stirring shafts, the bottoms of the threaded sleeves are jointly fixedly installed with limiting frames, and the lower ends of the stirring shafts extend movably to the outside of the limiting frames respectively, and the outer side of the stirring shafts is respectively fixedly installed with a plurality of stirring rods at equal intervals.

[0008] Preferably, the left side of the servo motor is fixedly installed with an L-shaped plate, and the right side of the L-shaped plate is fixedly installed on the drying box.

[0009] Preferably, the middle part of the opposite side of the threaded sleeve is respectively fixedly installed with a guide plate, and the guide plate is respectively slidably penetrated and installed with a guide rod, and the left and right ends of the guide rod are respectively fixedly installed on the inner wall of the inner cavity of the drying box.

[0010] Preferably, the outer side of the rotating rod is respectively fixedly sleeved with a movable gear close to the front and back ends, the top of the movable gear is respectively engaged with a rack plate, and the top of the rack plate is respectively fixedly installed on the inner wall of the inner cavity of the drying box.

[0011] Preferably, the middle part of the bottom of the drying box is slidably penetrated and installed with a discharging plate, the middle part of the bottom of the drying box is fixedly installed with a fixed frame, the middle part of the bottom of the fixed frame is fixedly installed with a hydraulic push rod, and a circular port is formed in the middle part of the fixed frame, the inner cavity of the circular port is penetrated by the power end of the hydraulic push rod, and the power end is fixedly installed on the discharging plate, and a gas dehumidification and filtration unit is fixedly penetrated and installed close to the top on the right side of the drying box.

[0012] Preferably, the opening and closing assembly comprises an opening and closing plate slidably penetrated and installed on the feeding frame and a fixed plate fixedly installed on the left side of the opening and closing plate, the middle part of the rear side of the fixed plate is fixedly installed with a fixed rod, the rear end of the fixed rod is fixedly installed with a sliding plate, the left side of the sliding plate is provided with a rotating disc, the top of the rotating disc close to the right side is movably installed with a swing rod, and the right end of the swing rod is movably installed on the sliding plate.

[0013] Preferably, the left side of the fixed plate close to the front and back sides is respectively fixedly installed with a limiting telescopic rod, and the left ends of the limiting telescopic rods are jointly fixedly installed with a side plate, and the bottom of the side plate is respectively fixedly installed on the drying box.

[0014] Preferably, the bottom of the rotating disc is provided with a support frame, the bottom of the support frame is fixedly installed on the drying box, a movable rod is movably and penetratively installed at the middle of the support frame, the upper end of the movable rod is fixedly installed on the rotating disc, the lower end of the movable rod is fixedly installed with a driven bevel gear, the left side of the driven bevel gear is engaged with a driving bevel gear, the left side of the driving bevel gear is fixedly installed with a transmission rod, a vertical plate is fixedly installed on the top of the drying box near the left rear side, the left end of the transmission rod movably and penetratively extends to the outside of the vertical plate, a synchronous wheel B is fixedly sleeved on the outside of the transmission rod near the terminal end, the output terminal end of the rear threaded rod is fixedly sleeved with a synchronous wheel C, and the outside of the synchronous wheel B and the synchronous wheel C is commonly sleeved with a synchronous belt A.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1、through the mutual matching between these components of threaded rod, threaded sleeve, guide plate, guide rod, synchronous belt B, servo motor, L plate, rotating rod, movable gear, rack plate, transmission bevel gear, rotating bevel gear, stirring rod and stirring shaft, the stirring shaft and the stirring rod can be driven to move back and forth and left and right in the drying box and also can rotate, so that the added particles can be stirred and dispersed, the particles can be fully contacted with the hot air, the efficiency of particle drying is improved, and the use effect is better.

[0017] 2、through the mutual matching between these components of opening and closing plate, fixed plate, limiting telescopic rod, side plate, fixed rod, sliding plate, rotating disc, support frame, driven bevel gear, driving bevel gear, transmission rod, synchronous belt A and swing rod, the opening and closing plate can be driven to move back and forth and left and right in the feeding frame, so that the particles in the feeding frame can be indirectly added into the drying box, the efficiency of particle drying can be further improved, and the heating of the particles is not affected by one-time addition. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall perspective view of the utility model;

[0019] Figure 2 It is the local right side view sectional perspective view of the utility model;

[0020] Figure 3 It is the local bottom perspective view of the utility model;

[0021] Figure 4 It is the local sectional development perspective view of the utility model;

[0022] Figure 5 It is the local structure perspective view of the threaded rod of the utility model;

[0023] Figure 6The partial structure perspective view of the stirring rod of the utility model;

[0024] Figure 7 The utility model discloses Figure 4 The enlarged view of A in the middle;

[0025] Figure 8 The utility model discloses Figure 6 The enlarged view of B in the middle.

[0026] In the drawing: 1, drying box;2, support leg;3, hot -blast machine;4, feed frame;5, open -and -shut subassembly;51, open -and -shut board;52, fixed plate;521, limit telescopic link;522, side plate;53, fixed link;54, sliding board;55, carousel;551, support frame;552, driven bevel gear;553, driving bevel gear;554, transmission rod;555, synchronous belt A;56, swing link;6, dispersion subassembly;61, threaded rod;62, threaded sleeve;621, guide plate;622, guide link;63, synchronous belt B;64, servo motor;641, L-shaped plate;65, rotation link;651, movable gear;652, rack plate;66, transmission bevel gear;67, rotation bevel gear;68, stirring shaft;69, stirring rod;7, blanking plate;8, fixed frame;9, hydraulic push rod;10, gas dehumidification filter unit. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] Embodiment 1

[0029] Please refer to Figures 1-8 An EVA particle drying device for EVA photovoltaic packaging adhesive film production, including drying box 1 and support leg 2 fixedly installed at the bottom of drying box 1 near the four corners, the top of drying box 1 is fixedly installed with hot -blast machine 3 near the left side, hot -blast machine 3 will heat drying box 1 after starting inside, hot -blast machine 3 belongs to the existing disclosure technology, and its function is also to make hot air flow, therefore the present application is not introduced in detail, and the output end of hot -blast machine 3 is fixedly extended to the inner chamber of drying box 1, the top of drying box 1 is fixedly installed with feed frame 4 near the right side, the inner chamber of feed frame 4 is installed with open -and -shut subassembly 5 near the bottom, the inner chamber of drying box 1 is installed with dispersion subassembly 6 near the top, the setting of open -and -shut subassembly 5 can realize the indirect blanking of particles, and the setting of dispersion subassembly 6 can stir particles.

[0030] In the embodiment, the dispersion assembly 6 comprises two threaded rods 61 arranged near the top of the inner cavity of the drying box 1, the threaded rods 61 are arranged front and back, the right ends of the threaded rods 61 are movably mounted on the inner wall of the inner cavity of the drying box 1 respectively, the left ends of the threaded rods 61 extend to the outside of the drying box 1 respectively, the outside of the threaded rods 61 is close to the right end and is screw-mounted with a threaded sleeve 62 respectively, the output ends of the threaded rods 61 are fixedly sleeved with synchronous wheels A respectively, the outside of the synchronous wheels A is commonly sleeved with a synchronous belt B63, the left end of the front threaded rod 61 is provided with a servo motor 64, the output end of the servo motor 64 is fixedly connected with the left end of the front threaded rod 61, the opposite side of the threaded sleeve 62 is commonly rotatably mounted with a rotating rod 65, the front and back ends of the outside of the rotating rod 65 are fixedly sleeved with transmission bevel gears 66 respectively, the bottoms of the transmission bevel gears 66 are engaged with rotating bevel gears 67 respectively, the middle part of the bottom of the rotating bevel gears 67 is fixedly mounted with a stirring shaft 68 respectively, the bottom of the threaded sleeve 62 is commonly fixedly mounted with a limiting frame, the lower ends of the stirring shafts 68 extend to the outside of the limiting frame respectively, the outside of the stirring shafts 68 is fixedly mounted with a plurality of stirring rods 69 at equal intervals respectively, the stirring rods 69 can be driven to move back and forth and left and right and also can rotate, so that the particles can be stirred, the particles can be fully contacted with the hot air, the efficiency of particle drying is improved, and the use effect is better.

[0031] The front and back threaded rods 61 have the same precision, can synchronously rotate under the transmission of the synchronous belt B63, and the synchronous belt B63 will not be separated from the outside of the synchronous wheel A, which meets the operation of the device.

[0032] Specifically, the left side of the servo motor 64 is fixedly mounted with an L-shaped plate 641, and the right side of the L-shaped plate 641 is fixedly mounted on the drying box 1, which supports the servo motor 64.

[0033] Specifically, the middle part of the opposite side of the threaded sleeve 62 is fixedly mounted with a guide plate 621 respectively, and the guide plate 621 is slidably mounted with a guide rod 622 respectively, the left and right ends of the guide rod 622 are fixedly mounted on the inner wall of the inner cavity of the drying box 1 respectively, which plays a guiding and limiting role when the threaded sleeve 62 moves.

[0034] Specifically, the outside of the rotating rod 65 is fixedly sleeved with a movable gear 651 close to the front and back ends, the top of the movable gear 651 is engaged with a rack plate 652 respectively, and the top of the rack plate 652 is fixedly mounted on the inner wall of the inner cavity of the drying box 1, which can drive the rotating rod 65 to rotate.

[0035] Specifically, the lower plate 7 is slidably installed at the middle of the bottom of the drying box 1, the fixed frame 8 is fixedly installed at the middle of the bottom of the drying box 1, the hydraulic push rod 9 is fixedly installed at the middle of the bottom of the fixed frame 8, and a circular opening is formed in the middle of the fixed frame 8, the power end of the hydraulic push rod 9 penetrates the inner cavity of the circular opening and is fixedly installed on the lower plate 7, and the gas dehumidification and filtration unit 10 is fixedly and penetrably installed at the right side of the drying box 1 close to the top, which is one of the commonly used combined devices of the drying device and is used for drying the humidity of the gas.

[0036] In the embodiment, when in use, the particles to be dried can be added to the feeding frame 4, and then the servo motor 64 and the hot air fan 3 can be operated, the servo motor 64 drives the front threaded rod 61 to rotate, and the front and rear threaded rods 61 are synchronously rotated under the transmission of the synchronous belt B63, the threaded rods 61 drive the adjacent threaded sleeves 62 to move left and right synchronously, the threaded sleeves 62 drive the rotating rod 65 to move left and right synchronously, the rotating rod 65 drives the movable gear 651 to move on the rack plate 652, the movable gear 651 rotates under the action of the rack plate 652, the movable gear 651 drives the transmission bevel gear 66 to rotate, the transmission bevel gear 66 drives the rotating bevel gear 67 to rotate, the rotating bevel gear 67 drives the stirring shaft 68 to rotate, and the stirring shaft 68 drives the adjacent stirring rods 69 to rotate, so that the particles are stirred and dispersed, the particles and the hot air are uniformly contacted, and the drying efficiency is improved.

[0037] Embodiment 2

[0038] The embodiment is an improvement on the basis of the embodiment 1, and specifically, please refer to Figure 1 and Figures 4-8 The opening and closing assembly 5 comprises the opening and closing plate 51 slidably installed on the feeding frame 4 and the fixed plate 52 fixedly installed on the left side of the opening and closing plate 51, the fixed rod 53 is fixedly installed at the middle of the rear side of the fixed plate 52, the rear end of the fixed rod 53 is fixedly installed with the sliding plate 54, the left side of the sliding plate 54 is provided with the rotating disc 55, the top of the rotating disc 55 close to the right side is movably installed with the swing rod 56, and the right end of the swing rod 56 is movably installed on the sliding plate 54, so as to drive the opening and closing plate 51 to move left and right in the feeding frame 4, and indirectly discharge the particles in the feeding frame 4.

[0039] Specifically, the left side of the fixed plate 52 is fixedly installed with a limiting telescopic rod 521 near the front and rear sides, and the left end of the limiting telescopic rod 521 is fixedly installed with a side plate 522, and the bottom of the side plate 522 is fixedly installed on the drying box 1, which plays a guiding and limiting role when the fixed plate 52 moves.

[0040] Specifically, the bottom of the rotating disc 55 is provided with a support frame 551, and the bottom of the support frame 551 is fixedly installed on the drying box 1, and the upper end of the movable rod is fixedly installed on the rotating disc 55, and the lower end of the movable rod is fixedly installed with a driven bevel gear 552, and the left side of the driven bevel gear 552 is engaged with a driving bevel gear 553, and the left side of the driving bevel gear 553 is fixedly installed with a transmission rod 554, and the top of the drying box 1 is fixedly installed with a vertical plate near the left rear side, and the left end of the transmission rod 554 is movably penetrated to the outside of the vertical plate, and the outer side of the transmission rod 554 is fixedly sleeved with a synchronous wheel B near the end, and the output end of the rear threaded rod 61 is fixedly sleeved with a synchronous wheel C, and the outer sides of the synchronous wheel B and the synchronous wheel C are commonly sleeved with a synchronous belt A 555, which can provide power for the operation of the rotating disc 55.

[0041] In this embodiment: the threaded rod 61 rotates under the transmission of the synchronous belt A 555, which drives the transmission rod 554 to rotate, and the transmission rod 554 rotates, which drives the driving bevel gear 553 to rotate, and the driving bevel gear 553 rotates, which drives the movable rod to rotate through the driven bevel gear 552, and the movable rod rotates, which drives the rotating disc 55 to rotate, and the rotating disc 55 rotates, which drives the sliding plate 54 to move back and forth through the swing rod 56, and the sliding plate 54 moves left and right, which drives the fixed plate 52 to move left and right through the fixed rod 53, and the fixed plate 52 moves left and right, which drives the opening and closing plate 51 to move left and right in the feeding frame 4, so as to realize the indirect falling of the particles into the drying box 1.

[0042] Working principle: in use, the particles to be dried can be added to the feeding frame 4, and after the addition is completed, the servo motor 64 and the hot air machine 3 can be operated. When the servo motor 64 operates, the front threaded rod 61 will be rotated, and under the transmission of the synchronous belt B63, the front and rear threaded rods 61 will be synchronously rotated. When the threaded rod 61 rotates, the adjacent threaded sleeve 62 will be synchronously moved left and right. When the threaded sleeve 62 moves left and right, the rotating rod 65 will be synchronously moved left and right. When the rotating rod 65 moves left and right, the movable gear 651 will move on the rack plate 652. At this time, the movable gear 651 will rotate under the action of the rack plate 652. When the movable gear 651 rotates, the transmission bevel gear 66 will rotate. When the transmission bevel gear 66 rotates, the rotating bevel gear 67 will rotate. When the rotating bevel gear 67 rotates, the stirring shaft 68 will rotate. When the stirring shaft 68 rotates, the adjacent stirring rods 69 will rotate, realizing the stirring and dispersion of the particles, so that they are uniformly contacted with the hot air, improving the drying efficiency. When the threaded rod 61 rotates, the transmission rod 554 will rotate under the transmission of the synchronous belt A555. When the transmission rod 554 rotates, the driving bevel gear 553 will rotate. When the driving bevel gear 553 rotates, the movable rod will rotate through the driven bevel gear 552. When the movable rod rotates, the rotating disc 55 will rotate. When the rotating disc 55 rotates, the sliding plate 54 will move left and right through the swing rod 56. When the sliding plate 54 moves left and right, the fixed plate 52 will move left and right through the fixed rod 53. When the fixed plate 52 moves left and right, the opening and closing plate 51 will move left and right in the feeding frame 4, realizing the indirect falling of the particles into the drying box 1.

[0043] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0044] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. An EVA particle drying device for EVA photovoltaic encapsulant film production, comprising a drying box (1) and support legs (2) fixedly installed at the bottom of the drying box (1) near the four corners, characterized in that: The top of the drying box (1) is fixedly installed with a hot air machine (3) near the left side, and the output end of the hot air machine (3) extends through the drying box (1) into the inner cavity, and the top of the drying box (1) is fixedly installed with a feeding frame (4) near the right side, and the inner cavity of the feeding frame (4) is installed with an opening and closing assembly (5) near the bottom, and the inner cavity of the drying box (1) is installed with a dispersion assembly (6) near the top. The dispersion assembly (6) comprises two threaded rods (61) arranged in the inner cavity of the drying box (1) near the top, the threaded rods (61) are arranged front and back, and the right ends of the threaded rods (61) are movably installed on the inner wall of the inner cavity of the drying box (1), respectively, the left ends of the threaded rods (61) extend through the outer side of the drying box (1), respectively, the right ends of the threaded rods (61) are threadedly installed with threaded sleeves (62), respectively, and the output ends of the threaded rods (61) are fixedly sleeved with synchronous wheels A, respectively, the outer side of the synchronous wheels A is commonly sleeved with a synchronous belt B (63), and the left end of the front threaded rod (61) is provided with a servo motor (64), the output end of the servo motor (64) is fixedly connected with the left end of the front threaded rod (61), the opposite side of the threaded sleeve (62) is commonly rotatably installed with a rotating rod (65), the front and back ends of the outer side of the rotating rod (65) are fixedly sleeved with transmission bevel gears (66), respectively, and the bottoms of the transmission bevel gears (66) are engaged with rotating bevel gears (67), respectively, the bottoms of the rotating bevel gears (67) are fixedly installed with stirring shafts (68), respectively, the bottom of the threaded sleeve (62) is commonly fixedly installed with a limiting frame, and the lower ends of the stirring shafts (68) extend through the outer side of the limiting frame, respectively, the outer side of the stirring shaft (68) is fixedly installed with a plurality of stirring rods (69) at equal intervals.

2. The EVA particle drying device for EVA photovoltaic encapsulant film production according to claim 1, characterized in that: The left side of the servo motor (64) is fixedly installed with an L-shaped plate (641), and the right side of the L-shaped plate (641) is fixedly installed on the drying box (1).

3. The EVA particle drying device for EVA photovoltaic encapsulant film production according to claim 1, characterized in that: The middle part of the opposite side of the threaded sleeve (62) is fixedly installed with a guide plate (621), respectively, and the guide plate (621) is slidably installed with a guide rod (622), respectively, and the left and right ends of the guide rod (622) are fixedly installed on the inner wall of the inner cavity of the drying box (1).

4. The EVA particle drying device for EVA photovoltaic encapsulant film production according to claim 1, characterized in that: The outer side of the rotating rod (65) is fixedly sleeved with a movable gear (651) near the front and back ends, respectively, the top of the movable gear (651) is engaged with a rack plate (652), respectively, and the top of the rack plate (652) is fixedly installed on the inner wall of the inner cavity of the drying box (1).

5. The EVA particle drying device for EVA photovoltaic encapsulant film production according to claim 1, characterized in that: The middle part of the bottom of the drying box (1) is slidably installed with a discharging plate (7), the middle part of the bottom of the drying box (1) is fixedly installed with a fixed frame (8), the middle part of the bottom of the fixed frame (8) is fixedly installed with a hydraulic push rod (9), and a circular opening is formed in the middle part of the fixed frame (8), the power end of the hydraulic push rod (9) passes through the inner cavity of the circular opening and is fixedly installed on the discharging plate (7), and the right side of the drying box (1) is fixedly installed with a gas dehumidification and filtration unit (10) near the top.

6. The EVA particle drying device for EVA photovoltaic encapsulant film production according to claim 1, characterized in that: The opening and closing assembly (5) comprises an opening and closing plate (51) slidingly installed on the feeding frame (4), and a fixed plate (52) fixedly installed on the left side of the opening and closing plate (51), a fixed rod (53) fixedly installed at the middle of the rear side of the fixed plate (52), a sliding plate (54) fixedly installed at the rear end of the fixed rod (53), a rotating disc (55) arranged on the left side of the sliding plate (54), an oscillating rod (56) movably installed on the top of the rotating disc (55) close to the right side, and the right end of the oscillating rod (56) movably installed on the sliding plate (54).

7. The EVA particle drying device for EVA photovoltaic encapsulant film production according to claim 6, characterized in that: The left side of the fixed plate (52) is fixedly installed with a limiting telescopic rod (521) close to the front and rear sides, and the left end of the limiting telescopic rod (521) is fixedly installed with a side plate (522), and the bottom of the side plate (522) is fixedly installed on the drying box (1).

8. The EVA particle drying device for EVA photovoltaic encapsulant film production according to claim 6, characterized in that: The bottom of the rotating disc (55) is provided with a supporting frame (551) below, the bottom of the supporting frame (551) is fixedly installed on the drying box (1), a movable rod is movably installed on the upper middle part of the supporting frame (551), the upper end of the movable rod is fixedly installed on the rotating disc (55), the lower end of the movable rod is fixedly installed with a driven bevel gear (552), the left side of the driven bevel gear (552) is engaged with a driving bevel gear (553), the left side of the driving bevel gear (553) is fixedly installed with a transmission rod (554), the top of the drying box (1) is fixedly installed with a vertical plate close to the left rear side, the left end of the transmission rod (554) movably penetrates and extends to the outside of the vertical plate, a synchronous wheel B is fixedly sleeved on the outer side of the transmission rod (554) close to the terminal end, a synchronous wheel C is fixedly sleeved on the output terminal end of the rear threaded rod (61), and the outer sides of the synchronous wheel B and the synchronous wheel C are jointly sleeved with a synchronous belt A (555).

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