CN111684894A - Pre-drying device of warm water disinfection equipment for disinfecting seeds with warm water - Google Patents

Pre-drying device of warm water disinfection equipment for disinfecting seeds with warm water Download PDF

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Publication number
CN111684894A
CN111684894A CN202010177177.4A CN202010177177A CN111684894A CN 111684894 A CN111684894 A CN 111684894A CN 202010177177 A CN202010177177 A CN 202010177177A CN 111684894 A CN111684894 A CN 111684894A
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China
Prior art keywords
container
drying
hot air
warm water
container base
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CN202010177177.4A
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Chinese (zh)
Inventor
西山恭介
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Satake Engineering Co Ltd
Satake Corp
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Satake Corp
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01CPLANTING; SOWING; FERTILISING
    • A01C1/00Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting

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  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Drying Of Solid Materials (AREA)
  • Pretreatment Of Seeds And Plants (AREA)

Abstract

The invention provides a relatively inexpensive pre-drying device which can maintain the water content of seed rice in the range of 7-10% in the drying treatment process before the warm water treatment process. A pre-drying device (1) of a warm water disinfection apparatus is provided with: a container box (3) having a bottom surface (2) of a mesh structure and capable of containing grains; a container base (4) which can place the container box (3) and has an open upper surface and can ventilate the container box (3); a hot air generating device (5) for generating hot air; and a flexible duct (6) having one end connected to the hot air generating device (5) and the other end connected to the vent of the container base (4), wherein the upper surface of the opening of the container base (4) is divided into a plurality of opening areas, and a plurality of container boxes (3) can be placed thereon. A plurality of container bases (4) may be disposed in proximity to each other.

Description

Pre-drying device of warm water disinfection equipment for disinfecting seeds with warm water
Technical Field
The present invention relates to a predrying device for a warm water sterilization apparatus for performing warm water sterilization of rice seeds (rice seeds).
Background
In the conventional disinfection of rice seeds with warm water (hereinafter, referred to as "seeds"), the present applicant has proposed a drying treatment step prior to the warm water treatment step, based on the knowledge that the reduction of the water content to 7 to 10% before immersing the seeds in warm water is effective in improving the high temperature resistance of the seeds (see, for example, patent documents 1 and 2).
Further, in the case of drying seeds, it is considered to perform air drying using an agricultural small circulation type grain dryer, but the amount of treated seed rice is smaller than that of edible rice, and therefore, the amount of seed rice that can be sufficiently filled in the drying part of the circulation type grain dryer may not be satisfied in some cases, and in the case of many kinds of seed rice, the inside of the circulation type grain dryer needs to be completely cleaned every time.
On the other hand, the present applicant has proposed a drying device for drying seed rice after hot water treatment, which stores seed rice stored in a net in a multi-layered drawer body and performs air drying, but it is difficult to perform treatment in the case of seed rice in a bulk state (see patent document 3). On the other hand, although there is an advantage that the drying is performed uniformly because the ventilation is performed for each of the drawer bodies, the drying apparatus is a processed product of sheet metal, and therefore, the cost is high accordingly.
That is, in the hot water sterilization method in which the drying step is provided before the hot water treatment step, the moisture content of the seed rice is maintained within a range of 7 to 10% in the drying step, and strict moisture management is not required. Therefore, from the consumer's perspective, a relatively inexpensive drying apparatus is required.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2015-146775
Patent document 2: japanese patent laid-open publication No. 2017-38535
Patent document 3: japanese patent laid-open No. 2008-14517
Disclosure of Invention
Problems to be solved by the invention
In view of the above problems, it is an object of the present invention to provide a relatively inexpensive predrying apparatus capable of maintaining the moisture content of the seed rice within a range of 7 to 10% in the drying process before the hot water treatment process.
Means for solving the problems
In order to solve the above problems, the present invention provides a predrying device for a hot water sterilizing apparatus, which is capable of placing a container box having a bottom surface of a mesh structure, opening an upper surface of a container base, and connecting a discharge portion having one end connected to the other end of a flexible duct of a hot air generator to an air vent of the container base,
the open upper surface of the container base is divided into a plurality of open regions, and a plurality of container boxes can be placed on the open upper surface.
In the invention according to the second aspect, a plurality of the container bases are provided, and the plurality of container bases and the hot air generator are connected to each other by a flexible duct formed by a main duct and a branch duct.
In the invention according to the third aspect, a ventilation opening for supplying hot air is provided in the side wall of the container base, a duct is attached to the ventilation opening, and a damper for controlling the ventilation amount of hot air is provided in the duct.
In the invention according to a fourth aspect, the container box is placed on the container base in a stacked manner.
In the fifth aspect of the invention, when a predetermined time has elapsed from the start of drying, the dried containers located in the lowermost layer of the container base are sequentially taken out to the outside of the machine, and on the other hand, a container containing new rice that has not been dried is placed on the uppermost layer of the container base, and drying is resumed.
Effects of the invention
According to the present invention, even when only a small amount of predetermined rice (for example, 300kg to 400kg) is secured to be predried before the hot water sterilization, it is possible to prepare several tens of the above-described container boxes capable of ventilation, divide the containers into pieces of 10 to 15kg, and place the divided pieces on the container base to dry the rice, and therefore, it is possible to provide an inexpensive predrying apparatus capable of drying the water content of the rice to a range of 7 to 10% in accordance with the amount of rice.
According to the second aspect of the invention, since a plurality of container bases are provided and the plurality of container bases and the hot air generator are connected to each other by the flexible duct formed by the main duct and the branch duct, the operator can appropriately set whether to provide one or a plurality of container bases at random depending on the amount of the rice to be predried.
According to the invention described in the third aspect, since the duct for connecting the flexible duct is attached to the ventilation opening of the container base, and the baffle for controlling the ventilation amount of the hot air is provided in the duct, the ventilation amount of the hot air can be controlled according to the number of container boxes placed on the container base.
In the invention according to a fourth aspect, the container box is placed on the container base in a stacked manner. In the invention according to the fifth aspect, the following drying method is performed: when a predetermined time has elapsed since the start of drying, the containers located in the lowermost layer of the container base and having been dried are sequentially taken out to the outside of the apparatus, and on the other hand, the containers containing new rice that has not been dried are placed on the uppermost layer of the container base, and drying is resumed.
Drawings
Fig. 1 is a perspective view showing a predrying apparatus according to an embodiment of the present invention.
Fig. 2 is a side view of the embodiment (as viewed in the direction of arrow a in fig. 1).
Fig. 3 is a front view of the embodiment (as viewed from the direction of arrow B in fig. 1).
Fig. 4 is a rear view of the embodiment (when viewed from the direction of arrow C in fig. 1).
Fig. 5 is a plan view of the embodiment (as viewed in the direction of arrow D in fig. 1).
Fig. 6 is a longitudinal sectional view of the embodiment (when cut along the line E-E of fig. 5).
Fig. 7 is a perspective view of a predrying apparatus provided with a plurality of container bases.
Fig. 8 is a flowchart when the drying process is performed.
Fig. 9 is a table of conversion of weight and moisture (weight/moisture list).
Fig. 10 is a schematic cross-sectional view of a second embodiment (a pre-drying apparatus capable of drying in a state in which a mesh bag for impregnation is incorporated).
In the figure:
1-predrying device, 2-bottom surface, 3-container box, 4-container base, 5-hot air generating device, 6-flexible pipe, 7-baffle, 8-frame, 9-control panel, 10-hot air generator start switch, 11-blower start switch, 12-temperature display, 13-air volume display, 14-target temperature display, 15-current temperature display, 101-predrying device, 102-frame, 103-shelf, 104-hot air generator, 105-blower, 106-circulation duct, 107-exhaust duct, 108-air inlet.
Detailed Description
[ first embodiment ]
A first mode for carrying out the present invention is explained with reference to the drawings. Fig. 1 is a perspective view showing a predrying apparatus according to a first embodiment of the present invention, fig. 2 is a side view thereof, fig. 3 is a front view thereof, fig. 4 is a rear view thereof, fig. 5 is a plan view thereof, and fig. 6 is a longitudinal sectional view thereof.
In fig. 1 to 6, the main part of the pre-drying apparatus 1 of the warm water sterilizing apparatus includes: a container box 3 having a bottom surface 2 formed in a lattice structure and capable of containing grains; a container base 4 having an upper surface opened so as to allow the container box 3 to be placed thereon and to be ventilated; a hot air generating device 5 for generating hot air; and a flexible duct 6 having one end connected to the hot air generator 5 and the other end connected to the vent of the container base 4.
The container box 3 is a commercially available plastic container (for example, a container having an inner size of 490mm × 330mm × 300 mm), and only the bottom surface 2 has a mesh structure. The four side walls of the plastic container 3 have no ventilation holes and are not ventilated, and only the lattice structure part of the bottom surface 2 is ventilated. The mesh diameter of the bottom surface 2 may be set to a diameter through which grains cannot pass. This makes the square side walls not permeable to air, and the bottom surface 2 alone does not leak grains but allows hot air to flow, and thus, the flat dryer is a small-sized version. The container box 3 can contain 10 to 15kg of grains (rice). The container box 3 may contain grains in bulk, or may contain grains in advance in a mesh bag for immersion. A plurality of container boxes 3 may be stacked in a multilayer manner. When the container box 3 is dried by stacking a plurality of layers, the valley layer is formed thick when viewed as a whole, and thus uneven drying may occur. However, in the pre-drying device 1 of the present embodiment, the moisture of the seeds is overdried to an extremely low moisture of about 7 to 10%, and therefore, there is no fear of uneven drying. Particularly, in the case of rice for cooking, if the moisture is dried to a very low moisture range of about 7 to 10%, there is a concern that cracks will occur and the quality (grade) will be reduced, but in the case of dry seeds, even if cracks occur, it is confirmed that there will be no problem with germination and growth of the seeds, and therefore, it is not necessary to take care of the occurrence of cracks due to overdrying at all.
The container base 4 (see fig. 7) is formed as a cylindrical or polygonal box having a diameter or a side of about 1m, such as a circle or a square, and a height of about 0.5m, and on which the container box 3 can be placed. The container base 4 is hollow and forms a chamber for accumulating dry air. An opening 4c is formed in the upper surface of the container base 4, and when the container box 3 is placed, dry air can pass from the container base 4 toward the container box 3. Reinforcing beams 4d and 4e are provided in the opening 4c of the vessel base 4 so as to be able to bear the weight of the vessel box 3 when it is placed thereon. In the embodiment of fig. 7, the reinforcing beams 4d and 4e are provided so as to cross the opening 4 c. This divides the opening 4c into a plurality of opening regions 4h to 4k (fig. 7), and a plurality of container boxes 3 can be placed thereon. A vent 4f for supplying hot air is provided in the side wall of the container base 4, and a duct 4g is attached to the vent 4 f. One end of the flexible tube 6 is attached to the tube 4 g. Further, the duct 4g may be provided with a damper 7 (see fig. 1, 4, and 7) capable of adjusting the opening degree of the vent 4f in order to control the amount of air introduced into the tank 3. Further, a plurality of container bases 4 may be provided as shown in fig. 7.
The hot air generator 5 accommodates a hot air generator including a kerosene burner, an electric heater, and the like, and a blower (neither of which is shown) for supplying hot air, in a box-shaped housing 8, and is provided with a control board 9 (see fig. 2 and 3) for controlling the temperature of the hot air generator and the air volume of the blower.
The control board 9 includes a hot air generator start switch 10 (see fig. 3) that can turn on and off the hot air generator, and a blower start switch 11 (see fig. 3) that can turn on and off the blower. The control board 9 is provided with a control unit (not shown) for setting the temperature of the hot air generated by the hot air generator, a temperature display unit 12 (see fig. 3) for monitoring the temperature, a control unit (not shown) for setting the air volume of the dry air generated by the blower, and an air volume display unit 13 (see fig. 3) for monitoring the air volume. The temperature display unit 12 may be provided with a target temperature display unit 14 and a current temperature display unit 15 (see fig. 3).
A discharge port 5a (see fig. 7) for discharging the hot air generated by the hot air generator and the blower is provided in the housing 8 of the hot air generator 5, and a duct 5b is attached to the discharge port 5 a. The other end of the flexible pipe 6 is attached to the pipe 5 b.
The flexible duct 6 connecting the hot air generator 5 and the vessel base 4 may be formed by forming a flexible and impermeable cloth-like material into a tubular shape. The material is preferably a synthetic resin sheet (blue sheet, tarpaulin material) such as polyethylene, and most preferably a tarpaulin obtained by coating tar on canvas to impart water repellency thereto. In addition, a vinyl material in which a polyester fiber is covered with a synthetic resin film may be used. When such a flexible, windproof sheet is used, the sheet does not become bulky when stored. Further, even if a plurality of container bases 4 are provided as shown in fig. 7, piping can be easily added, and the degree of freedom is excellent. For example, in the embodiment of fig. 7, the main pipe 6a of the flexible pipe 6 is extended and the branch pipe 6c of the flexible pipe 6 is reconnected, as compared with the embodiment of fig. 1.
The operation of the predrying apparatus 1 configured as described above will be described below with reference to the flow of fig. 8.
First, it is assumed that 10 to 15kg of grains (rice) are contained in one container box 3. For example, when about 300kg of rice is ensured to be pre-dried by sterilizing with warm water, 20 to 30 containers 3 are prepared. Since approximately 16 container boxes 3 can be placed on one container base 4 (see fig. 1), for example, if the number of container boxes 3 is 24, two container bases 4 (see fig. 7) need to be prepared. The operator can set the amount of the rice to be predried as appropriate. In the case of two container bases 4 shown in fig. 7, a flexible duct 6 is formed by the main pipe 6a and the branch pipes 6b and 6c, and the duct 5b of the hot air generator 5 and the duct 4g of the container base 4 are connected to each other through the flexible duct 6. Further, the moisture of the raw material was measured for each container box 3 in advance with a hand-held moisture meter, and the weight of the raw material was measured with a gauge (step 1 of fig. 8).
Next, container box 3 is placed on opening 4c of container base 4, and a plurality of container boxes 3 are stacked in a multi-layer form (for example, four layers are stacked) to prepare for drying (step S2 in fig. 8).
Then, the hot air generator start switch 10 and the blower start switch 11 of the control board 9 are started to start drying the rice (step S3 in fig. 8). Simple controls may be as follows: the temperature of hot air generated by the hot air generator is kept within 40-50 deg.C, and the air blowing amount generated by the blower is kept at 15m3In terms of a/minute. That is, unlike rice for cooking, the purpose can be achieved by over-drying the seeds to a very low moisture content of about 7 to 10%, without fear of cracking.
The pre-drying apparatus 1 can be controlled by a manual timer operation (manually stopping the drying apparatus after a certain time has elapsed) without limitation to a configuration of an inexpensive drying apparatus. That is, whether or not a predetermined drying time has elapsed is measured by a commercially available timer or stopwatch, and when the predetermined drying time has elapsed, the drying apparatus is stopped (step S3 in fig. 8). The drying time may be set appropriately according to the conditions such as the moisture value of the raw material, and an attempt is made to determine the reference of the drying time in the present embodiment. Therefore, when the container box 3 is one-layered, a drying time of about 4 hours is required to make 13.9 to 14.3% of the moisture of the rice before drying to 8.3 to 8.9% of the moisture of the rice after drying. Similarly, when the container box 3 has two layers, a drying time of about 8 hours is required to make 13.9 to 14.3% of the moisture of the rice before drying to 8.3 to 8.9% of the moisture of the rice after drying. Similarly, when the container box 3 has three layers, a drying time of about 12 hours is required to make 13.9 to 14.3% of the moisture of the rice before drying to 8.3 to 8.9% of the moisture of the rice after drying. Similarly, when the container box 3 has four layers, a drying time of about 16 hours is required to obtain a moisture content of rice of 8.3 to 8.9% after drying, in order to obtain a moisture content of rice of 13.9 to 14.3% before drying. That is, it was found that each layer required a drying time of about 4 hours. In addition, if there is one floor, the drying is completed in about 4 hours, and in this case, as in the case of a "dammo doll" as a toy, the container box 3 of the floor one is taken out of the machine and the container boxes 3 of the floor two are transferred to the floor one after about 4 hours, and on the other hand, the container boxes 3 containing new rice which has not been dried are transferred to the uppermost floor, thereby enabling the drying operation to be continuously performed.
Next, in order to confirm whether or not the drying operation can be completed properly, the dried weight of the uppermost container box 3 is measured (step S5 in fig. 8). From the results of the weight measurement before and after drying, the estimated moisture value after drying can be known by the following calculation formula.
[ number 1 ]
Ma=100-(100-Mb)×(Wb/Wa)
And Ma: moisture after drying (%)
Mb: moisture before drying (%)
Wa: weight after drying (kg)
Wb: weight before drying (kg)
Note that, when a table of conversion of weight and moisture (a table of weight and moisture) is prepared, the table is as shown in fig. 9.
Then, it is verified whether or not the moisture value measured in step S5 of fig. 8 is the target moisture value (step S6 of fig. 8). When the measured moisture value is the target moisture value in step S6, the drying is ended (step S7 in fig. 8), and when the measured moisture value does not reach the target moisture value, the drying is returned to and performed again.
As described above, according to the first embodiment of the present invention, it is possible to provide an inexpensive pre-drying apparatus for a hot water sterilization facility, in which the upper surface of the container base is opened so that the container box having a mesh structure on the bottom surface can be placed, and the discharge part having one end connected to the other end of the flexible duct of the hot air generation device is connected to the ventilation opening of the container base, and in which the upper surface of the opening of the container base is divided into a plurality of opening regions and a plurality of container boxes can be placed, and therefore, even when only a small amount of rice (for example, 300kg to 400kg) is secured for the purpose of pre-drying before the hot water sterilization, tens of the above-mentioned ventable container boxes 3 can be prepared, stored in a subdivided manner of 10 kg to 15kg, and placed on the container base for drying, and therefore, the amount of rice can be matched, the amount of water in the rice can be dried to a range of 7 to 10%.
[ second embodiment ]
A second mode for carrying out the present invention is explained with reference to the drawings. Fig. 10 is a schematic longitudinal sectional view showing a predrying apparatus according to a second embodiment of the present invention. In the pre-drying apparatus 101 according to the second embodiment, the grains can be dried in a state of being packed in a mesh bag for impregnation, and the pre-drying apparatus 101 includes: a frame body 102; a shelf plate 103 having a ventilation structure and arranged in a plurality of layers in the housing 102; a hot air generator 104 and a blower 105 disposed outside the housing 102; a circulation air duct 106 for circulating and reusing the dried exhaust air; and an exhaust path 107 for discharging a part of the dried exhaust air to the outside of the machine. Reference numeral 108 denotes an air suction port for circulation. According to this configuration, the rice M stored in the mesh bag for immersion is placed on the shelf 103, and when the hot air generator 104 and the blower are driven, hot air is supplied from below, so that drying can be performed in the so-called multi-layer dryer. Even in the multi-layer dryer according to the second embodiment, a relatively inexpensive pre-drying device can be provided which can cope with a small amount of rice and can dry the amount of moisture of rice to 7 to 10%.
While some embodiments of the present invention have been described above, the above-described embodiments of the present invention are examples for facilitating understanding of the present invention, and do not limit the present invention. The present invention can be modified and improved without departing from the spirit thereof, and equivalents thereof are intended to be included in the present invention. In addition, in a range in which at least a part of the above-described problems can be solved or in a range in which at least a part of the effects can be achieved, the combination or omission of each component described in the claims and the description may be performed.
Industrial applicability
The present invention is useful for a pre-drying device of a warm water sterilizing apparatus for sterilizing rice seeds (rice seeds) in warm water.

Claims (5)

1. A predrying device for a warm water disinfection apparatus, comprising: a container box having a bottom surface having a mesh structure and capable of containing grains; a container base on which the container box can be placed, which has an open upper surface and is formed so as to be able to ventilate the container box; a hot air generating device for generating hot air; and a flexible duct having one end connected to the hot air generator and the other end connected to the vent of the container base, wherein the pre-drying device of the hot water sterilizing apparatus,
the open upper surface of the container base is divided into a plurality of open regions, and a plurality of container boxes can be placed on the open upper surface.
2. The pre-drying device for a warm water sterilizing apparatus according to claim 1,
a plurality of the container bases are provided, and the plurality of container bases and the hot air generator are connected by a flexible duct formed by a main pipe and a branch pipe.
3. The pre-drying device of a warm water sterilizing apparatus according to claim 1 or 2,
a duct for connecting the flexible duct is installed at the ventilation opening of the container base, and a baffle plate for controlling the ventilation amount of the hot air is provided in the duct.
4. The pre-drying device for a warm water sterilizing apparatus according to any one of claims 1 to 3,
the container box is placed on the container base in a stacked manner.
5. The pre-drying device of a warm water sterilizing apparatus according to claim 4,
the following drying method was carried out: when a predetermined time has elapsed from the start of drying, the containers located in the lowermost layer on the container base are sequentially taken out of the machine, while containers containing new rice that has not been dried are placed on the uppermost layer on the container base, and drying is resumed.
CN202010177177.4A 2019-03-15 2020-03-13 Pre-drying device of warm water disinfection equipment for disinfecting seeds with warm water Pending CN111684894A (en)

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JP2019049155A JP2020146018A (en) 2019-03-15 2019-03-15 Pre-drying device in hot water disinfection equipment for disinfecting seeds with hot water
JP2019-049155 2019-03-15

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103004977A (en) * 2012-12-11 2013-04-03 农业部南京农业机械化研究所 Reversible ventilating box type drying machine and method for drying grain and oil crops
CN103053684A (en) * 2013-02-04 2013-04-24 荆州市金雄机械科技有限公司 Grain drying device
CN203824288U (en) * 2014-05-04 2014-09-10 佛冈明阳机械有限公司 Grain drying and dedusting device
CN204070343U (en) * 2014-06-26 2015-01-07 淮安富民科技有限公司 A kind of three layers of drying device of foodstuff drying device

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JPS5387276U (en) * 1976-12-17 1978-07-18
JP2001074365A (en) * 1999-09-02 2001-03-23 Iseki & Co Ltd Drying system used for black soybean or the like
JP3448774B2 (en) * 2001-06-29 2003-09-22 株式会社タイガーカワシマ Hot water disinfection equipment for seed rice
JP2007085674A (en) * 2005-09-22 2007-04-05 Kubota Corp Dryer
JP4827126B2 (en) * 2006-03-15 2011-11-30 ヤンマー株式会社 Dehumidifying and drying equipment
JP2011239691A (en) * 2010-05-14 2011-12-01 Satake Corp Ventilation dryer for vegetable or the like
JP6214417B2 (en) * 2014-02-06 2017-10-18 株式会社サタケ Seed hot water disinfection method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103004977A (en) * 2012-12-11 2013-04-03 农业部南京农业机械化研究所 Reversible ventilating box type drying machine and method for drying grain and oil crops
CN103053684A (en) * 2013-02-04 2013-04-24 荆州市金雄机械科技有限公司 Grain drying device
CN203824288U (en) * 2014-05-04 2014-09-10 佛冈明阳机械有限公司 Grain drying and dedusting device
CN204070343U (en) * 2014-06-26 2015-01-07 淮安富民科技有限公司 A kind of three layers of drying device of foodstuff drying device

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Application publication date: 20200922