CN210374486U - Grading drying device - Google Patents

Abstract

The utility model relates to a hierarchical drying device. Including a set of drying device group more than, every drying device group is including the drying device one and the drying device two that set gradually, all be equipped with a set of pay-off subassembly on drying device one and the drying device two, hierarchical drying device still includes a plurality of pusher that set gradually in each drying device one top, each drying device two below. The utility model discloses be equipped with drying device one, drying device two and pusher, only need the manual work to place the charging tray one by one the bottom of first drying device one can realize pipelined's hierarchical stoving, advance from first drying device bottom and go out from two bottoms of last drying device, can not only make food be heated evenly, and artificial intervention is few moreover, has reduced the human cost, in addition, avoids adopting current drying method with advancing with going out, weak point consuming time has improved drying efficiency.

Description

Grading drying device

Technical Field

The utility model relates to a drying equipment field is a hierarchical drying device very much.

Background

With the continuous improvement of the technological level, people also improve the diet, and through machinery, people can dry and store some foods in the season for people to eat in other seasons. At present, the drying of food is mainly realized by a dryer. The existing drying equipment mainly has the following defects: 1. food needs to be manually stacked before being put into the oven, the material is completely manually fed in and out, and the labor cost is high; 2, food is heated unevenly in the drying equipment, so that the drying degree of the food is not uniform, and partial food is deteriorated during storage; 3. the existing drying equipment adopts a simultaneous-in and simultaneous-out mode for drying, and has long time consumption and low efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides a hierarchical drying device, this hierarchical drying device is equipped with drying device one, drying device two and pusher, only need the manual work to place the charging tray one by one the bottom of first drying device one can realize pipelined's hierarchical stoving, advance and go out from two bottoms of last drying device from first drying device bottom, can not only make food be heated evenly, and artificial intervention is few, the human cost has been reduced, in addition, avoid adopting current drying method with advancing with going out, consuming time is short, drying efficiency is improved.

The utility model discloses a following technical scheme realizes: a grading drying device comprises more than one group of drying device groups, each group of drying device group comprises a first drying device and a second drying device, the first drying device is used for conveying and drying a material tray from bottom to top, the second drying device is used for conveying and drying the material tray from top to bottom, the first drying device and the second drying device are both provided with a group of feeding components which are used for conveying the material trays from bottom to top or from top to bottom at intervals, the grading drying device also comprises a plurality of pushing devices which are arranged above the first drying devices and below the second drying devices in sequence, the pushing device can push the material discs which rise to the top of the first drying device in each group of drying devices to the top of the second drying device, push the material discs which fall to the bottom of the second drying device in each two groups of adjacent drying device groups to the bottom of the first drying device adjacent to the second drying device, and push the material discs which fall to the bottom of the second drying device.

The working principle and the process are as follows: when the drying device is used, the material trays filled with materials are manually placed into the bottom of the first drying device one by one for drying, in the drying process, the feeding assembly drives the material trays to be conveyed from bottom to top continuously, when the material trays are conveyed to the top of the first drying device, the pushing device moves to push the material trays which rise to the top of the first drying device to the tops of the second drying devices which are adjacent to the first drying device, then the feeding assembly drives the material trays to be conveyed from top to bottom continuously, when the material trays are conveyed to the bottoms of the second drying devices, the pushing device moves to push the material trays which fall to the bottoms of the second drying devices to the bottoms of the first drying devices which are adjacent in sequence, and so on, the material trays are conveyed to the bottom of the last second drying device until the material trays are pushed out under the action of the pushing device.

For better implementation of the scheme, the following optimization scheme is also provided:

in order to better convey the feeding disc, the feeding assembly comprises two groups of lifting assemblies which are arranged on the front side and the rear side in the first drying device or the second drying device in parallel and are positioned at the same height position, and a lifting driving assembly which is arranged between the first drying device and the two groups of lifting assemblies or between the second drying device and the two groups of lifting assemblies and is used for driving the two groups of lifting assemblies to synchronously lift, wherein the front side and the rear side of the feeding disc are erected on the two groups of lifting assemblies.

In order to constantly upwards or carry the charging tray downwards in the interval, every group lifting unit includes that two sets of parallel branch locate the left and right sides and set firmly the pole is placed to the L type on two sets of chain wheel chain groups of left and right sides and many intervals that extend along upper and lower direction, chain wheel chain group includes last sprocket, lower sprocket and connects the chain between last sprocket and lower sprocket, and two of the front side are gone up the equal coaxial setting of sprocket, two of the rear side and are located same height, and two lower sprockets of front side, two lower sprockets of rear side all coaxial setting and are located same height, and the axis of four last sprockets and four lower sprockets is all parallel to each other, L type is placed the pole about both ends and is set firmly respectively on the chain of the left and right sides, and the highly uniform that the pole was placed to two corresponding L types in front and back both sides.

In order to synchronously drive four groups of chain wheel chain groups to synchronously rotate, the lifting driving assembly comprises a front transmission rod coaxially and fixedly arranged between two upper chain wheels in the front two groups of chain wheel chain groups, a rear transmission rod coaxially and fixedly arranged between two upper chain wheels in the rear two groups of chain wheel chain groups, a synchronizing rod vertically connected between the front transmission rod and the rear transmission rod, a front worm and gear connected between the front transmission rod and the synchronizing rod, a rear worm and gear connected between the rear transmission rod and the synchronizing rod, a motor and a reduction gearbox fixedly arranged above the first drying device or the second drying device, and a belt pulley assembly connected between an output shaft of the reduction gearbox and the front transmission rod.

In order to better dry products in a material tray, a first closed drying cavity is arranged on a first drying device, two first hot air inlets which are distributed along the front-back direction and communicated with the first drying cavity are arranged on the upper end face of the first drying device, a first hot air outlet communicated with the first drying cavity is arranged in the middle of the upper end face of the first drying device, a first material tray inlet is arranged below the right side face of the first drying device, a first material tray outlet is arranged above the left side face of the first drying device, a second closed drying cavity is arranged on the second drying device, two second hot air inlets which are distributed along the front-back direction and communicated with the second drying cavity are arranged on the upper end face of the second drying device, a second hot air outlet communicated with the second drying cavity is arranged in the middle of the upper end face of the second drying device, and a second material tray inlet corresponding to the first material tray outlet is arranged above the right side face of the second drying device, and a second material tray outlet is formed below the left side surface of the second drying device.

In order to better carry out the propelling movement to the charging tray between adjacent device, pusher is including setting up in each drying device one top or each two below of drying device and along the propelling movement seat that left right direction extended, two parallels set firmly on the propelling movement seat and along the guide bar that left right direction extended, sliding connection in the sliding seat on the guide bar, set firmly the push plate on the sliding seat, connect and be used for driving the gliding ball screw subassembly of sliding seat round trip and be used for driving lead screw pivoted propelling movement drive assembly between propelling movement seat and sliding seat.

In order to be better to the charging tray lead, hierarchical drying device still includes that the multiunit sets up the direction subassembly one that is used for leading the charging tray in charging tray propelling movement in-process between arbitrary two adjacent devices in drying device one and drying device two and two sets of setting respectively in the in-process that is used for carrying out the direction to the charging tray below in a drying device right side and two left sides of last drying device two, direction subassembly one includes that two sets of levels divide locate arbitrary two adjacent devices between be used for carrying out the horizontal guide roller one of bearing direction and a set of vertical setting in being used for carrying out the vertical guide roller one of location direction to the charging tray both sides face on any device in two arbitrary adjacent devices, direction subassembly two includes that a set of level sets up in below in a drying device right side or two left sides of last drying device below and is used for carrying out the bearing direction to the charging tray bottom And the horizontal guide roller II and the vertical guide rollers II are vertically arranged below the right side of the first drying device I or below the left side of the last drying device II and are used for positioning and guiding the two side surfaces of the material tray.

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

(1) the utility model provides a hierarchical drying device, this hierarchical drying device is equipped with drying device one, drying device two and pusher, only need the manual work to place the charging tray one by one the bottom of first drying device one can realize pipelined's hierarchical stoving, advance from first drying device one bottom and go out from two bottoms of last drying device, can not only make food be heated evenly, and artificial intervention is few moreover, the human cost is reduced, in addition, avoid adopting current drying method with advancing with going out, consuming time is short, drying efficiency is improved.

(2) The utility model provides a grading drying device, adopt two L type to place the charging tray on the same height, the charging tray is convenient for to push from one device to another device, and adopt the sprocket chain group to drive L type and place the pole, can realize the interval and constantly from bottom to top or from top to bottom carry the charging tray, improve drying efficiency;

(3) the utility model provides a step drying device, the lift drive assembly adopts a motor as the driving source, then drives four groups of sprocket chain groups to rotate through reducing gear box, belt pulley assembly, synchronizing bar, back transfer line and preceding transfer line, has guaranteed the synchronism of four groups of sprocket chain group rotations, has guaranteed the steady lift of charging tray;

(4) the utility model provides a grading drying device, the drying cavity is a closed cavity, only a charging tray inlet and a charging tray outlet are arranged, the loss of hot air is reduced, and the drying effect is ensured;

(5) the utility model provides a hierarchical drying device is equipped with pusher, can push the charging tray that rises to drying device top in every group drying device group to two tops of drying device, with in every two sets of adjacent drying device groups the charging tray that descends to two bottoms of drying device push to with two adjacent drying device bottoms of drying device, will descend to the charging tray of two bottoms of last drying device and push out, realized from the streamlined production of feeding to hierarchical stoving to unloading, degree of automation is high, it is effectual to dry;

(6) the utility model provides a grading drying device, two groups of horizontal guide rollers I and a group of vertical guide rollers I are arranged between two adjacent devices, and a group of horizontal guide rollers II and a group of vertical guide rollers II are arranged on the first drying device I and the last drying device II, thus ensuring the charging tray to be accurately pushed;

(7) the utility model provides a hierarchical drying device, performance is reliable, and it is effectual to dry, and drying efficiency is high, has wide market prospect.

Drawings

Fig. 1 is a schematic three-dimensional structure diagram of the staged drying device of the present invention;

FIG. 2 is a front view (longitudinal sectional view) of the staged dryer of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

fig. 4 is a schematic three-dimensional structure diagram of a first drying device of the present invention;

fig. 5 is a schematic view of the internal structure of the first drying device of the present invention;

FIG. 6 is a schematic three-dimensional structure diagram of a feeding device and a pushing device in a first drying device;

FIG. 7 is a partial enlarged view of B in FIG. 6;

FIG. 8 is a schematic diagram of a three-dimensional structure of a pushing device;

fig. 9 is a schematic three-dimensional structure diagram of the last drying device ii of the present invention;

fig. 10 is a schematic three-dimensional structure diagram of another view angle of the last drying device of the present invention;

fig. 11 is a schematic view of the internal structure of the last drying device ii of the present invention.

Description of reference numerals: 1. the device comprises a first drying device, 11, a first hot air inlet, 12, a first hot air outlet, 13, a first tray inlet, 14, a first tray outlet, 2, a second drying device, 21, a second hot air inlet, 22, a second hot air outlet, 23, a second tray inlet, 24, a second tray outlet, 3, a feeding component, 31, a lifting component, 311, a chain wheel and chain group, 3111, a winding wheel, 3112, a lower chain wheel, 3113, a chain, 312, an L-shaped placing rod, 32, a lifting driving component, 321, a front driving rod, 322, a rear driving rod, 323, a synchronizing rod, 324, a front worm gear, 325, a rear worm gear, 326, a motor, 327, a reduction box, 328, a belt pulley component, 4, a pushing device, 41, a pushing seat, 42, a guide rod, 43, a sliding seat, 44, a pushing plate, 45, a ball screw component, 46, a pushing driving component, 5, a first guide component, 51, a first horizontal guide roller, 52. the device comprises a first vertical guide roller 6, a second guide assembly 61, a second horizontal guide roller 62 and a second vertical guide roller.

Detailed Description

The invention is explained in detail below with reference to the accompanying drawings:

as shown in fig. 1-11, the utility model provides a hierarchical drying device, including a set of more than drying device group, every drying device group is including the drying device 1 that is used for carrying the charging tray from up carrying on drying and being used for carrying the charging tray from the top down carrying on drying that sets gradually and drying device two 2, all be equipped with a set of pay-off component 3 that is used for interval to constantly from up or from the top down carrying the charging tray on drying device 1 and drying device two 2, hierarchical drying device still includes a plurality of pusher 4 that set gradually in each drying device 1 top, each drying device two 2 below, pusher 4 can be with every drying device group rise to the charging tray propelling movement of drying device 1 top to drying device two 2 top, with every two sets of adjacent drying device group fall to the charging tray propelling movement of drying device two 2 bottoms to the drying device one 1 bottom adjacent with drying device two 2, And pushing out the material tray which descends to the bottom of the last drying device 2.

As shown in fig. 5-6, in order to better convey the material tray, the material feeding assembly 3 includes two sets of lifting assemblies 31 disposed in parallel on the front and rear sides in the first drying device 1 or the second drying device 2 and located at the same height position, and a lifting driving assembly 32 disposed between the first drying device 1 and the two sets of lifting assemblies 31 or between the second drying device 2 and the two sets of lifting assemblies 31 and used for driving the two sets of lifting assemblies 31 to lift synchronously, and the front and rear sides of the material tray are overlapped on the two sets of lifting assemblies 31.

As shown in fig. 6, in order to continuously convey the trays upwards or downwards at intervals, each group of lifting assemblies 31 comprises two groups of chain wheel chain sets 311 which are arranged on the left and right sides in parallel and extend along the up-down direction, and a plurality of L-shaped placing rods 312 which are fixedly arranged on the two groups of chain wheel chain sets 311 on the left and right sides at intervals, the chain wheel and chain assembly 311 includes a chain wheel 3111, a lower chain wheel 3112 and a chain 3113 connected between the chain wheel 3111 and the lower chain wheel 3112, two chain wheels 3111 at the front side and two upper chain wheels 3111 at the rear side are coaxially disposed and located at the same height, two lower chain wheels 3112 at the front side and two lower chain wheels 3112 at the rear side are coaxially disposed and located at the same height, the axes of the four chain wheels 3111 and the four lower chain wheels 3112 are parallel to each other, the left and right ends of the L-shaped placing rod 312 are respectively fixed on the chains 3113 at the left and right sides, and the two L-shaped placing rods 312 at the front and rear sides are at the same height. The chain wheel set 311 in each lifting assembly 31 can also adopt a synchronous belt transmission mode. Each chain wheel and chain set 311 is covered by a protective cover to prevent oil stains from splashing to the dried product; the whole frame of the whole drying system is welded and assembled by the galvanized pipe, so that rusting is prevented.

As shown in fig. 7, in order to synchronously drive the four sets of sprocket chain sets to synchronously rotate, the lifting driving assembly 32 includes a front driving rod 321 coaxially and fixedly disposed between two upper sprockets 3111 of the front two sets of sprocket chain sets 311, a rear driving rod 322 coaxially and fixedly disposed between two upper sprockets 3111 of the rear two sets of sprocket chain sets 311, a synchronizing rod 323 vertically connected between the front driving rod 321 and the rear driving rod 322, a front worm gear 324 connected between the front driving rod 321 and the synchronizing rod 323, a rear worm gear 325 connected between the rear driving rod 322 and the synchronizing rod 323, a motor 326 and a reduction box 327 fixedly disposed above the first drying device 1 or the second drying device 2, and a pulley assembly 328 connected between an output shaft of the reduction box 327 and the front driving rod 321.

As shown in fig. 1-2, 4-5, and 9-10, in order to better dry the product in the material tray, a first airtight drying cavity is arranged on the first drying device 1, two first hot air inlets 11 distributed along the front-back direction and communicated with the first drying cavity are arranged on the upper end face of the first drying device 1, a first hot air outlet 12 communicated with the first drying cavity is arranged in the middle of the upper end face of the first drying device 1, a first material tray inlet 13 is arranged below the right side face of the first drying device 1, a first material tray outlet 14 is arranged above the left side face of all the first drying device 1, a second airtight drying cavity is arranged on the second drying device 2, two second hot air inlets 21 distributed along the front-back direction and communicated with the second drying cavity are arranged on the upper end face of the second drying device 2, a second hot air outlet 22 communicated with the second drying cavity is arranged in the middle of the upper end face of the second drying device 2, a second material tray inlet 23 corresponding to the first material tray outlet 14 is formed in the upper portion of the right side face of the second drying device 2, and a second material tray outlet 24 is formed in the lower portion of the left side face of the second drying device 2. The shell shields of the first drying device 1 and the second drying device 2 are made of two layers of stainless steel, heat preservation cotton is added in the middle, hot air loss is avoided, the front shield and the rear shield are of door leaf type, transparent windows capable of being observed are arranged on the doors, and independent temperature and humidity detection sensors are arranged on the doors.

As shown in fig. 8, in order to better push the material trays between the adjacent devices, the pushing device 4 includes a pushing seat 41 disposed above each of the first drying devices 1 or below each of the second drying devices 2 and extending in the left-right direction, two guide rods 42 fixed in parallel on the pushing seat 41 and extending in the left-right direction, a sliding seat 43 slidably connected to the guide rods 42, a pushing plate 44 fixed on the sliding seat 43, a ball screw assembly 45 connected between the pushing seat 41 and the sliding seat 43 and used for driving the sliding seat 43 to slide back and forth, and a pushing driving assembly 46 connected to the ball screw assembly 45 and used for driving the screw to rotate.

As shown in fig. 1-4 and 9-10, in order to better guide the material tray, the staged drying device further includes a plurality of sets of first guiding components 5 arranged between any two adjacent devices of the first drying device 1 and the second drying device 2 and used for guiding the material tray in the material tray pushing process, and two sets of second guiding components 6 respectively arranged below the right side of the first drying device 1 and below the left side of the last drying device 2 and used for guiding the material tray in the feeding or discharging process, wherein the first guiding components 5 include two sets of first horizontal guiding rollers 51 horizontally arranged between any two adjacent devices and used for supporting and guiding the bottom of the material tray, and a set of first vertical guiding rollers 52 vertically arranged on any one of any two adjacent devices and used for positioning and guiding the material tray on two side surfaces, the second guiding component 6 comprises a group of horizontal guiding rollers 61 which are horizontally arranged below the right side of the first drying device 1 or below the left side of the last drying device 2 and used for supporting and guiding the bottom of the material tray, and a group of vertical guiding rollers 62 which are vertically arranged below the right side of the first drying device 1 or below the left side of the last drying device 2 and used for positioning and guiding the two side surfaces of the material tray.

The utility model discloses a theory of operation does: firstly, the material trays filled with materials are manually placed on two L-shaped placing rods 312 at the same height at the bottom of the first drying device 1 one by one through a material tray inlet 13, and then four groups of chain wheel and chain sets 311 in the feeding assembly 3 synchronously rotate to drive the material trays to be continuously conveyed from bottom to top. The working process of the feeding assembly 3 is as follows: the motor 326 rotates to drive the reduction box 327, then the belt pulley assembly 328 drives the front transmission rod 321 to rotate, the front transmission rod 321 drives the two sets of chain wheel chain sets 311 connected with the front transmission rod to rotate, meanwhile, the front transmission rod 321 drives the synchronous rod 323 to rotate through the front worm gear 324, the synchronous rod 323 drives the rear transmission rod 322 to rotate through the rear worm gear 325, the rear transmission rod 322 drives the two sets of chain wheel chain sets 311 connected with the rear transmission rod to rotate, therefore, the four sets of chain wheel chain sets 311 synchronously rotate to carry out feeding circulation, the motor 326 rotates forwards when feeding upwards, and the motor 326 rotates backwards when feeding downwards. When the charging tray is conveyed to the top of the first drying device 1, the 4-action pushing device pushes the charging tray which rises to the top of the first drying device 1 to the top of the second drying device 2 which is adjacent to the first drying device 1, the feeding component 3 drives the charging tray interval to continuously convey from top to bottom, when the charging tray is conveyed to the bottom of the second drying device 2, the 3-action pushing device pushes the charging tray which falls to the bottom of the second drying device 2 to the bottom of the first drying device 1 which is adjacent to the first drying device, then the feeding component 3 drives the charging tray interval to continuously convey from bottom to top, and so on, until the charging tray conveys the bottom of the second drying device 2, and then the pushing device moves to push the charging tray which is conveyed to the bottom of the second drying. Every group unit independent control among the hierarchical drying device, a set of break down does not influence other unit productions, and whole stoving is the formula operation that flows, guarantees that the stoving product is heated evenly, does not have some products earlier dry on same pallet, some problem of doing afterwards, also need not turn over the product, avoids agricultural product to damage, has guaranteed the appearance quality of product.

While the present invention has been shown and described with reference to particular embodiments and alternatives thereof, it will be understood that various changes and modifications can be made without departing from the spirit and scope of the invention. It is understood, therefore, that the invention is not to be limited, except as by the appended claims and their equivalents.

Claims (7)

1. The utility model provides a hierarchical drying device which characterized in that: including a set of drying device group more than, every drying device group is including the drying device (1) that is used for carrying the charging tray from up carrying and drying and being used for carrying the charging tray from last down carrying and drying two (2) that set gradually, all be equipped with a set of pay-off subassembly (3) that are used for the interval to constantly from up or from last down carrying the charging tray on drying device (1) and drying device two (2), hierarchical drying device still includes a plurality of pusher (4) that set gradually in each drying device (1) top, each drying device two (2) below, pusher (4) can push the charging tray that rises to drying device (1) top in every drying device group to drying device two (2) top, with the propelling movement that falls to drying device two (2) bottom in every two sets of adjacent drying device groups to drying device two (2) adjacent drying device one (1) bottom, And pushing out the material tray which descends to the bottom of the last drying device II (2).

2. The staged drying device of claim 1, wherein: the feeding assembly (3) comprises two sets of parallel lifting assemblies (31) which are arranged on the same height position on the front side and the rear side in the drying device I (1) or the drying device II (2) and arranged between the drying device I (1) and the two sets of lifting assemblies (31) or between the drying device II (2) and the two sets of lifting assemblies (31) and used for driving the two sets of lifting assemblies (31) to synchronously lift, and two side edges of the charging tray are arranged on the two sets of lifting assemblies (31) in the front and the rear.

3. The staged drying device of claim 2, wherein: each group of lifting components (31) comprises two groups of chain wheel chain groups (311) which are arranged on the left side and the right side in parallel and extend along the up-down direction and a plurality of L-shaped placing rods (312) which are fixedly arranged on the two groups of chain wheel chain groups (311) on the left side and the right side at intervals, the chain wheel chain group (311) comprises an upper chain wheel (3111), a lower chain wheel (3112) and a chain (3113) connected between the upper chain wheel (3111) and the lower chain wheel (3112), wherein the two upper chain wheels (3111) on the front side and the two upper chain wheels (3111) on the rear side are coaxially arranged and are positioned at the same height, the two lower chain wheels (3112) on the front side and the two lower chain wheels (3112) on the rear side are coaxially arranged and are positioned at the same height, the axes of the four upper chain wheels (3111) and the four lower chain wheels (3112) are parallel to each other, the left end and the right end of the L-shaped placing rod (312) are respectively and fixedly arranged on the chains (3113) on the left side and the right side, and the two L-shaped placing rods (312) corresponding to the front side and the rear side are consistent in height.

4. The staged drying device of claim 3, wherein: the lifting driving assembly (32) comprises a front transmission rod (321) coaxially and fixedly arranged between two upper chain wheels (3111) in the front two chain wheel chain sets (311), a rear transmission rod (322) coaxially and fixedly arranged between two upper chain wheels (3111) in the rear two chain wheel chain sets (311), a synchronizing rod (323) vertically connected between the front transmission rod (321) and the rear transmission rod (322), a front worm gear (324) connected between the front transmission rod (321) and the synchronizing rod (323), a rear worm gear (325) connected between the rear transmission rod (322) and the synchronizing rod (323), a motor (326) and a reduction gearbox (327) fixedly arranged above the first drying device (1) or the second drying device (2), and a belt wheel assembly (328) connected between an output shaft of the reduction gearbox (327) and the front transmission rod (321).

5. The staged drying device of claim 1, wherein: the drying device comprises a drying device body and is characterized in that a first airtight drying cavity is arranged on the drying device body (1), two first hot air inlets (11) which are distributed along the front-back direction and communicated with the drying cavity body are arranged on the upper end face of the drying device body (1), a first hot air outlet (12) communicated with the drying cavity body is arranged in the middle of the upper end face of the drying device body (1), a first charging tray inlet (13) is arranged below the right side face of the drying device body (1), a first charging tray outlet (14) is arranged above the left side face of the drying device body (1), an second airtight drying cavity is arranged on the drying device body (2), two second hot air inlets (21) which are distributed along the front-back direction and communicated with a second drying cavity body are arranged on the upper end face of the drying device body (2), a second hot air outlet (22) communicated with the second drying cavity body is arranged in the middle of the upper, and a second material tray inlet (23) corresponding to the first material tray outlet (14) is formed in the upper part of the right side surface of the second drying device (2), and a second material tray outlet (24) is formed in the lower part of the left side surface of the second drying device (2).

6. The staged drying device of claim 1, wherein: the pushing device (4) comprises a pushing seat (41) which is arranged above each drying device I (1) or below each drying device II (2) and extends along the left-right direction, two guide rods (42) which are parallelly and fixedly arranged on the pushing seat (41) and extend along the left-right direction, a sliding seat (43) which is connected to the guide rods (42) in a sliding manner, a pushing plate (44) which is fixedly arranged on the sliding seat (43), a ball screw assembly (45) which is connected between the pushing seat (41) and the sliding seat (43) and used for driving the sliding seat (43) to slide back and forth, and a pushing driving assembly (46) which is connected with the ball screw assembly (45) and used for driving the screw to rotate.

7. The staged drying device of claim 1, wherein: hierarchical drying device still includes that the multiunit sets up in drying device one (1) and drying device two (2) between arbitrary adjacent two devices be used for carrying out the direction guide subassembly (5) and two sets of setting respectively in first drying device one (1) right side below and last drying device two (2) left side below be used for carrying out the direction guide subassembly two (6) to the charging tray at the in-process of material loading or unloading, guide subassembly one (5) include that two sets of levels divide locate arbitrary two adjacent two devices between be used for carrying out the horizontal guide roller one (51) of bearing direction and a set of vertical setting in arbitrary two adjacent two devices in be used for carrying out the vertical guide roller one (52) of location direction to the charging tray both sides face, guide subassembly two (6) include that a set of levels set up in first drying device one (1) right side below or last drying device two (2) right side below or last drying device two (2) The horizontal guide roller II (61) used for bearing and guiding the bottom of the material tray below the left side and the vertical guide roller II (62) which is vertically arranged horizontally below the right side of the first drying device I (1) or the left side of the last drying device II (2) and used for positioning and guiding the two side faces of the material tray.

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