CN110530120A - A drying device for tribute chrysanthemum production and its use method - Google Patents

Abstract

The invention discloses a drying device for tribute chrysanthemum production and a method for using the same. The device comprises a drying box, the inner cavity of the drying box is divided into a heating chamber and a first installation chamber by a first partition, and the third partition divide the first installation warehouse into the second installation warehouse, the third installation warehouse and the gas outlet warehouse arranged in sequence from left to right; the third installation warehouse is divided into multi-layer drying warehouses by a plurality of fourth partitions, each There are storage boxes that can be pulled out in each drying bin; an exhaust device is provided on the outside of each drying bin. The third through hole is connected, the top of the drying chamber is equipped with a gas delivery pipe, and the bottom of the gas delivery pipe is provided with a plurality of nozzles, through which the heated gas in the gas delivery pipe is blown into the drying chamber to realize the cleaning of the storage box. Material drying. The invention has the advantages of high drying efficiency, energy saving and environmental protection.

Description

A drying device for tribute chrysanthemum production and its use method

technical field

The invention relates to the technical field of tribute chrysanthemum drying equipment, in particular to a drying device for tribute chrysanthemum production and a use method thereof.

Background technique

Huangshan tribute chrysanthemum is sweet and bitter in nature, slightly cold. Contains inulin, adenine, choline, vitamins A1, B1, amino acids, potassium, sodium salt and other ingredients. Clinical application proves that it can calm the central nervous system, enhance the anti-inflammatory ability of capillaries, and inhibit human tuberculosis, staphylococcus, Activity of Pseudomonas aeruginosa, influenza virus, skin fungus, Orphan cholerae, Streptococcus. It has the effects of clearing the liver and improving eyesight, exorcising evil and reducing fire, cooling and relieving the exterior. Chrysanthemum tea has effects on dry mouth, hot fire, and astringent eyes. After hot drinking, the whole body sweats and feels relaxed. It is a good medicine for colds and a health drink suitable for all ages.

Huangshan tribute chrysanthemum needs to be dried and stored after picking. Usually, people simply dry the fresh Huangshan tribute chrysanthemum in the sun to let it dry by itself; the fallen petals after drying are inconvenient to collect, resulting in waste of petals; and The natural drying efficiency is low and time-consuming, and the Huangshan tribute chrysanthemums being dried are gathered and dried on a flat surface many times, which greatly increases the number of petals falling; in addition, when the Huangshan tribute chrysanthemums cannot be dried in rainy weather It will cause Huangshan tribute chrysanthemum to rot and deteriorate, causing great economic losses.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a drying device for tribute chrysanthemum production and its use method, in order to achieve simple operation, convenient use, high drying efficiency, energy saving and environmental protection.

The present invention is achieved through the following technical solutions:

A drying device for tribute chrysanthemum production, comprising a base and a drying box arranged on the base, the inner cavity of the drying box is divided into a heating chamber and a first installation chamber arranged up and down by a first partition, the The first installation compartment is provided with a second partition and a third partition, and the first installation compartment is divided into the second installation compartment, the third installation compartment and the gas outlet compartment arranged in sequence from left to right through the second partition and the third partition , the heating chamber communicates with the gas outlet chamber through the first through hole, and the heating chamber communicates with the second installation chamber through the second through hole;

The side wall of the air outlet chamber is provided with an air inlet and an exhaust hole, and one end of the air inlet pipe in the air outlet chamber communicates with the air inlet, and the other end communicates with the first through hole; a heating device is provided in the heating chamber, heating the gas coming in from the first through hole by means of a heating device;

The third installation compartment is divided into multi-layer drying compartments by a plurality of fourth partitions, and the left and right sides of each drying compartment are respectively provided with a third through hole and a fourth through hole, which are connected through the fourth through hole. The drying bin and the air outlet bin, each drying bin is provided with a storage box that can be drawn, and the storage box is drawn from the first opening on the front side of the drying bin, and the upper end of the storage box is open; each drying bin The outside of the dry warehouse is provided with an air exhaust device, the air exhaust device is located in the second installation warehouse, the number of the second through holes is the same as that of the air exhaust device, and the air intake end of the air exhaust device is connected with the corresponding second through hole, The air outlet end of the exhaust device is connected with the third through hole of the corresponding drying chamber, and the top of the drying chamber is provided with an air pipe, and the air inlet end of the air pipe is connected with the third through hole, and the air pipe is connected to the third through hole. There are multiple nozzles at the bottom, through which the heated gas in the gas delivery pipe is blown into the drying chamber to realize the drying of the materials in the storage box.

Further, the front side of the storage box is provided with a bonding plate, which is sealed and connected with the corresponding first opening through the bonding plate, and the left and right inner walls of the drying bin are respectively provided with a first mounting plate, and the two first The inner side of the mounting plate is respectively provided with grooves, and the left and right sides of the storage box are respectively provided with outwardly protruding second mounting plates, and the second mounting plates on the left and right sides of the storage box are respectively embedded in the two first In the groove on the inside of the mounting plate, at least two third mounting plates are provided on the outside of each second mounting plate, and the bottom of the third mounting plate is provided with rollers, which roll along the bottom surface of the groove to realize the storage of the entire storage box. sliding pull.

Further, a windshield is provided in the air outlet bin, the upper end of the windshield is fixed on the first partition, the lower end of the windshield is inclined to the left, and a layer of copper alloy sheet is provided on the surface of the air inlet pipe , the air intake pipe is arranged on the copper alloy sheet of the windshield and coiled to form a serpentine pipe shape.

Further, a plurality of baffles are arranged in the heating chamber, and the plurality of baffles are arranged staggeredly along the direction from right to left, and through the plurality of staggered baffles, The direction forms multiple roundabout airflow channels; multiple heating devices are respectively arranged in the airflow channels.

Further, the heating chamber is provided with a temperature sensor for detecting the temperature in the heating chamber.

Further, the middle section of the inner side wall of the storage box is provided with a ring of inwardly protruding flange plates, the flange plate is provided with a filter frame for placing materials to be dried, and the bottom plate of the storage box is provided with A plurality of fifth through holes, the apertures of which are smaller than the apertures of the filter holes on the filter screen frame.

Further, universal wheels are provided on the bottom of the base.

Further, the upper and lower ends of the second mounting plate are respectively provided with gaskets, and the two gaskets are respectively sealed and attached to the top wall and the bottom wall of the groove.

Further, a second opening is provided on the outside of the air outlet chamber, a third opening is provided on the outside of the second installation chamber, and sealed doors are respectively provided at the second opening and the third opening.

The present invention also discloses a method for using the above-mentioned drying device for tribute chrysanthemum production, which is carried out in sequence as follows:

S1. Spread the materials to be dried evenly in the storage box;

S2. Push each storage box into the multi-layer drying bin from the first opening on the front side of the drying bin;

S3. Start the heating device and the exhaust device, the outside air enters the heating chamber through the air intake hole, the air intake pipe and the first through hole in turn, and the air enters each exhaust device through each second through hole after being heated by the heating device in the heating chamber At the air intake end, the hot air enters the drying chamber through the third through hole, the air pipe and the nozzle of each drying chamber in sequence from the air outlet of the exhaust device;

S4. The hot air enters the drying bins respectively and contacts the materials placed in the storage box; the hot air then enters the air outlet bins through the fourth through hole of each drying bin;

S5. The hot air entering the air outlet chamber contacts the air intake pipe, and after heat exchange with the air in the air intake pipe, it is finally discharged from the exhaust hole;

S6. After the drying is completed, each storage box is taken out from the drying chamber.

Compared with the prior art, the present invention has the following advantages:

1, a kind of tribute chrysanthemum production drying device provided by the present invention and using method thereof, the Huangshan tribute chrysanthemum to be dried is evenly laid in the storage box, then the moist Huangshan tribute chrysanthemum is dried by hot air, and dried The overall shape of the Huangshan tribute chrysanthemum will not be damaged, so that the Huangshan tribute chrysanthemum is more beautiful, and the taste of the chrysanthemum is not affected; finally, the dried Huangshan tribute chrysanthemum can be taken out from the storage box and sealed for preservation. In addition, the present invention also utilizes the residual heat of the hot air discharged after drying to preheat the air in the intake pipe, thereby improving the utilization rate of heat energy; truly realizing energy saving and environmental protection.

2. A drying device for tribute chrysanthemum production and its use method provided by the present invention, which forms multiple roundabout airflow passages along the direction from right to left in the heating chamber through a plurality of staggered baffles. The airflow channel with a circuitous structure prolongs the length of the airflow channel, increases the residence time of the air in the heating chamber, ensures the heating effect, and then ensures the subsequent drying effect of the material.

3. A drying device for tribute chrysanthemum production and its use method provided by the present invention, which is provided with a layer of filter screen frame in the middle of the storage box, and the aperture of the filter hole on the filter screen frame is larger than the fifth pass on the bottom plate of the storage box. The aperture of the hole can realize the large-sized materials to be left on the filter screen frame, and the small-sized materials to fall into the bottom plate of the storage box, so as to realize the whole leaves and scattered leaves of the dried tribute chrysanthemum. Collect separately.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the present invention.

Fig. 2 is an enlarged view of A in Fig. 1 .

Fig. 3 is a side view of the installation structure of the baffle plate and the intake pipe of the present invention.

Fig. 4 is a perspective view of the storage box of the present invention.

Fig. 5 is a top view of the filter frame of the present invention.

Labels in the figure: 1, drying box; 2, base; 3, universal wheel; 4, second partition; 5, storage box; 51, laminated board; 52, fifth through hole; 6, drying chamber; 7. The third clapboard; 8. The fourth through hole; 9. The air outlet chamber; 10. The second opening; 11. The windshield; 12. The intake pipe; 13. The air intake hole; 14. The exhaust hole; 15. The first partition; 16, the first through hole; 17, the baffle; 18, the air flow channel; 19, the heating device; 20, the second through hole; 21, the second installation warehouse; 22, the ventilation device; 23, the third Through hole; 24, the fourth clapboard; 25, air pipe; 26, nozzle; 27, filter screen frame; 271, installation frame; 272, filter screen; 28, flange plate; 29, the first installation plate; 30, The second mounting plate; 31, the gasket; 32, the roller; 33, the third mounting plate; 34, the groove.

Detailed ways

The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

Referring to Figures 1 to 5, this embodiment discloses a drying device for tribute chrysanthemum production, including a base 2 and a drying box 1 arranged on the base 2, the bottom of the base 2 is provided with a universal wheel 3, the universal wheel Wheel 3 selects the universal wheel with brake for use, conveniently moves and locks to this device. The inner cavity of the drying box 1 is divided into a heating chamber arranged up and down and a first installation chamber through the first partition 15,

The second partition 4 and the third partition 7 are arranged in the first installation warehouse, and the first installation warehouse is divided into the second installation warehouse 21, the third partition and the third partition by the second partition 4 and the third partition 7. The installation bin and the gas outlet bin 9 are connected, the heating bin communicates with the gas outlet bin 9 through the first through hole 16 , and the heating bin communicates with the second installation bin 21 through the second through hole 20 .

The side wall of the air outlet bin 9 is provided with an air inlet 13 and an air outlet 14, and the air inlet 13 and the air outlet 14 are respectively provided with a dust-proof filter; the dust-proof filter provided can effectively prevent external impurities from entering Air hole 13 enters, and prevents the impurity in the air outlet chamber 9 from being discharged from exhaust hole 14 with air. One end of the air intake pipe 12 in the air outlet bin 9 communicates with the air inlet 13, and the other end communicates with the first through hole 16; the air outlet bin 9 is provided with a windshield 11, the upper end of which is fixed on the first compartment. On the plate 15, the lower end of the windshield 11 is arranged inclined to the left, and the angle between the windshield 11 and the third partition 7 is less than 60°. A layer of copper alloy sheet is provided on the surface of the air inlet pipe 12 , and the air inlet pipe 12 is arranged on the copper alloy sheet of the windshield 11 and coiled to form a serpentine tubular shape. The hot air discharged from the fourth through hole 8 of each drying bin 6 is blown to the windshield 11, and the hot wind heats the copper alloy sheet on the windshield 11 and contacts with the air intake pipe 12; the copper alloy sheet is in contact with the air intake pipe 12 further heat transfer. The hot air discharged from the air outlet chamber 9 exchanges heat with the intake pipe 12 to preheat the cold air in the intake pipe 12, which improves the utilization rate of heat energy; The length of time that the cold air in the interior stays in the air outlet bin 9 has improved the preheating effect to the cold air in the intake pipe 12 . In addition, the windshield 11 is arranged obliquely relative to the third partition 7; the inclination of the windshield 11 can ensure that the hot air blown from the drying chamber 6 to the windshield 11 flows in one direction to the greatest extent, and the flow of the hot air in the air outlet chamber See the arrow direction in Figure 1 for the direction.

A heating device 19 is provided in the heating chamber, through which the gas coming in from the first through hole 16 is heated, and a temperature sensor for detecting the temperature in the heating chamber is provided in the heating chamber. A plurality of baffles 17 are arranged in the heating chamber, and the plurality of baffles 17 are arranged staggeredly along the direction from right to left, and a plurality of baffles 17 arranged in a staggered manner are formed along the direction from right to left in the heating chamber Air flow channel 18 with multiple detours; multiple heating devices 19 are respectively arranged in the air flow channel 18, and the heating device 19 is an electric heating tube.

The inner wall of the second installation warehouse 21 is provided with a sound-absorbing board; the space between the sound-absorbing board and the inner wall of the second installation warehouse 21 is filled with sound-absorbing cotton; Absorb to avoid noise pollution.

The third installation chamber is divided into multi-layer drying chambers 6 by a plurality of fourth partitions 24, and the left and right sides of each drying chamber 6 are respectively provided with a third through hole 23 and a fourth through hole 8. The through hole 8 communicates with the drying chamber 6 and the air outlet chamber 9, and each drying chamber 6 is provided with a drawable storage box 5, and the storage box 5 is drawn from the first opening on the front side of the drying chamber 6 to store The upper end of case 5 is open; the outside of each drying bin 6 is provided with an exhaust device 22, and the exhaust device 22 selects an exhaust fan for use. Air extraction device 22 is positioned in the second installation storehouse 21, and the quantity of second through hole 20 and air extraction device 22 is identical, and the inlet end of air extraction device 22 is connected with corresponding second through hole 20, and the air outlet end of air extraction device 22 is connected with corresponding The third through hole 23 of the drying bin 6 is connected, the top of the drying bin 6 is provided with an air delivery pipe 25, the air inlet end of the air delivery pipe 25 is connected with the third through hole 23, and the bottom of the air delivery pipe 25 is equidistantly provided with multiple A nozzle 26, through a plurality of nozzles 26, the heated gas in the gas delivery pipe 25 is blown into the drying bin 6, so as to realize the drying of the material in the storage box 5. Wherein, the air delivery pipe 25 can be designed to be distributed in a wave shape, so as to ensure that a plurality of nozzles 26 are evenly distributed above the storage box 5, so as to ensure that the materials are evenly dried.

Specifically, the front side of the storage box 5 is provided with a fitting plate 51, through which the fitting plate 51 is sealed and docked with the corresponding first opening, and the left and right inner walls of the drying bin 6 are respectively provided with a first mounting plate 29, two second A mounting plate 29 inside is respectively provided with grooves 34, and the left and right sides of storage box 5 are respectively provided with the second mounting plate 30 protruding outwards, and wherein, the first mounting plate 29, the second mounting plate 30 and storage box 5 The lengths in the front and rear directions are respectively the same as the lengths of the drying chamber 6 in the front and rear directions. The second mounting plate 30 on the left and right sides of the storage box 5 is respectively embedded in the grooves 34 inside the two first mounting plates 29, and the upper and lower ends of the second mounting plate 30 are respectively provided with gaskets 31, and the two gaskets 31 are in sealing fit with the top wall and the bottom wall of the groove 34 respectively. Each second mounting plate 30 outside is provided with at least two 3rd mounting plates 33, and the bottom of the 3rd mounting plate 33 is provided with roller 32, rolls along the bottom surface of groove 34 by roller 32, realizes the sliding draw-out of whole storage box 5 pull.

The middle section of the inner side wall of the storage box 5 is provided with a circle of inwardly protruding flange plate 28, the flange plate 28 is provided with a filter screen frame 27 for placing materials to be dried, and the bottom plate of the storage box 5 is provided with a plurality of fifth Through hole 52, the aperture of the fifth through hole 52 is smaller than the aperture of the filter hole on the filter screen frame 27. The filter screen frame 27 includes an installation frame 271 and a filter screen 272 .

A second opening is provided on the outside of the air outlet chamber 9, a third opening is provided on the outside of the second installation chamber 21, and hermetic doors are respectively provided at the second opening and the third opening. Open the airtight door at the second opening to clean the inside of the air outlet bin 9 . Open the airtight door at the third opening to clean the inside of the second installation compartment 21 .

This implementation also discloses a method of using the above drying device for tribute chrysanthemum production, which is carried out in sequence as follows:

S1. Use the universal wheel 3 to move the device to a designated position, and evenly lay the material to be dried on the filter screen frame 27 of the storage box 5;

S2. Push each storage box 5 into the multi-layer drying bin 6 from the first opening on the front side of the drying bin 6;

S3. Start the heating device 19 and the exhaust device 22, and the outside air enters the heating chamber through the air inlet 13, the air inlet pipe 12 and the first through hole 16 successively, and the air is heated by the heating device 19 in the heating chamber respectively by each second through hole. The hole 20 enters the air intake end of each exhaust device 22, and the hot air enters the drying chamber 6 through the third through hole 23, the air pipe 25 and the nozzle 26 of each drying chamber 6 successively from the air outlet end of the exhaust device 22;

S4. The hot air enters the drying bins 6 respectively and contacts with the materials placed in the storage box 5; the hot air then enters the air outlet bin 9 through the fourth through hole 8 of each drying bin 6;

S5. The hot air entering the air outlet chamber 9 is in contact with the air intake pipe 12, and after heat exchange with the air in the air intake pipe 12, it is finally discharged from the exhaust hole 14;

S6. After drying is completed, each storage box 5 is taken out from the drying bin 6

The applicant has carried out three tests among them, the temperatures of the hot air input into the drying bin 6 are respectively 30-40°C, 50-70°C and 20-35°C, and the corresponding drying times are 1-5H, 20°C, respectively. -30H and 1-2H.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention. Inside.

Claims (10)

1. a kind of florists Chrysould likehemum production drying unit, including pedestal (2) and the drying box (1) being arranged on pedestal (2), the baking Dry case (1) inner cavity is divided into heating cabinet arranged up and down and the first installation bin, first installation bin by first partition (15) It is interior to be equipped with second partition (4) and third partition (7), the first installation bin is divided by second partition (4) and third partition (7) It controls the second installation bin (21) being arranged successively, third installation bin and gas storehouse (9), the heating cabinet passes through first through hole (16) out It is connected with gas storehouse out (9), the heating cabinet is connected by the second through-hole (20) with the second installation bin (21)；

It is described go out gas storehouse (9) side wall be equipped with air inlet (13) and gas vent (14), out air inlet pipe (12) one end in gas storehouse (9) and Air inlet (13) is connected, the other end is connected with first through hole (16)；Heating device (19) are equipped in the heating cabinet, are passed through The gas come in from first through hole (16) is heated in heating device (19) realization；

It is divided into multilayer warehouse for drying (6) in the third installation bin by multiple 4th partitions (24), a left side for each warehouse for drying (6) Right two sides have third through-hole (23) and fourth hole (8), are connected to warehouse for drying (6) and out gas storehouse by fourth hole (8) (9), the storage box (5) of energy pull, first opening of the storage box (5) on front side of warehouse for drying (6) are equipped in each warehouse for drying (6) Pull is carried out, storage box (5) upper end is open；Extractor fan (22), the exhausting are equipped on the outside of each warehouse for drying (6) Device (22) is located in the second installation bin (21), and second through-hole (20) is identical as the quantity of extractor fan (22), exhausting dress The inlet end for setting (22) is connected with corresponding second through-hole (20), the outlet side of extractor fan (22) and corresponding warehouse for drying (6) Third through-hole (23) be connected, warehouse for drying (6) inner top be equipped with appendix (25), the inlet end of the appendix (25) It is connected with third through-hole (23), appendix (25) bottom is equipped with multiple spray heads (26), will be defeated by multiple spray heads (26) Gas in tracheae (25) by heating is blown into warehouse for drying (6), realizes the drying to storage box (5) interior material.

2. a kind of florists Chrysould likehemum production drying unit as described in claim 1, it is characterised in that: the front side of the storage box (5) Equipped with jointing plate (51), by jointing plate (51), mutually sealing is docked with corresponding first opening, in the left and right of the warehouse for drying (6) It is respectively arranged on side wall the first mounting plate (29), is respectively equipped with groove (34) on the inside of two the first mounting plates (29), it is described to deposit Put the second mounting plate (30) outwardly protruded that is respectively arranged on the left side and the right side of case (5), second at left and right sides of the storage box (5) Mounting plate (30) is inlaid in respectively the groove (34) on the inside of two the first mounting plates (29) Nei, on the outside of each second mounting plate (30) Equipped at least two third mounting plates (33), third mounting plate (33) bottom is equipped with idler wheel (32), passes through idler wheel (32) edge Groove (34) bottom surface roll, realize the sliding pull of entire storage box (5).

3. a kind of florists Chrysould likehemum production drying unit as described in claim 1, it is characterised in that: be equipped in gas storehouse (9) out The upper end of wind deflector (11), the wind deflector (11) is fixed on first partition (15), and the lower end of wind deflector (11) is tilted to the left Setting, air inlet pipe (12) surface are equipped with one layer of alcu alloy film, and the air inlet pipe (12) is arranged in the copper in wind deflector (11) On alloy sheet and spiral to form coiled pipe shape.

4. a kind of florists Chrysould likehemum production drying unit as described in claim 1, it is characterised in that: be equipped in the heating cabinet multiple Baffle (17), multiple baffles (17) are staggered along direction from right to left, pass through multiple staggered baffle (17) In The airflow channel (18) of multiple detour is formed in heating cabinet along direction from right to left；Multiple heating devices (19) are separately positioned on In airflow channel (18).

5. a kind of florists Chrysould likehemum production drying unit as described in claim 1, it is characterised in that: be equipped with and be used in the heating cabinet Detect the temperature sensor of temperature in heating cabinet.

6. a kind of florists Chrysould likehemum production drying unit as described in claim 1, it is characterised in that: storage box (5) inner sidewall Middle section is equipped with an inwardly protruded flange plate (28) of circle, and the flange plate (28) is equipped with the filtering for placing material to be dried The bottom plate of screen frame (27), the storage box (5) is equipped with multiple fifth holes (52), and the aperture of the fifth hole (52) is less than Filter the aperture of filter opening on screen frame (27).

7. a kind of florists Chrysould likehemum production drying unit as described in claim 1, it is characterised in that: the bottom of the pedestal (2) is set It is equipped with universal wheel (3).

8. a kind of florists Chrysould likehemum production drying unit as described in claim 1, it is characterised in that: second mounting plate (30) Upper and lower side is respectively equipped with gasket (31), by two gaskets (31) respectively with the roof of groove (34) and bottom wall phase sealing paste It closes.

9. a kind of florists Chrysould likehemum production drying unit as described in claim 1, it is characterised in that: set on the outside of described gas storehouse (9) out There is the second opening, be equipped with third on the outside of second installation bin (21) and be open, second opening and third opening are set respectively There is hermatic door.

10. the application method that drying unit is used in a kind of florists Chrysould likehemum production as described in any one of claim 1 to 9, which is characterized in that The application method successively carries out as follows:

S1. material to be dried is uniformly laid in storage box (5)；

S2. in the first opening push-in multilayer warehouse for drying (6) by each storage box (5) on front side of warehouse for drying (6)；

S3. start heating device (19) and extractor fan (22), outside air successively pass through air inlet (13), air inlet pipe (12) and First through hole (16) enters heating cabinet, and air is in heating cabinet respectively by each second through-hole after heating device (19) heating (20) enter the inlet end of each extractor fan (22), hot-air successively passes through each drying by the outlet side of extractor fan (22) Third through-hole (23), appendix (25) and the spray head (26) in storehouse (6) enter in warehouse for drying (6)；

S4. hot-air is respectively enterd in warehouse for drying (6) and is contacted with the material being placed in storage box (5)；Hot-air is again by each The fourth hole (8) of a warehouse for drying (6) enters gas storehouse (9)；

S5. the hot-air entered in gas storehouse (9) is contacted with air inlet pipe (12), and carries out heat exchange with the interior air of air inlet pipe (12) Afterwards, it is finally discharged from gas vent (14)；

S6. after completing drying, each storage box (5) is taken out from warehouse for drying (6).