JP2001021266A - Low temperature drying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a drying item to be rapidly dried without showing any discoloring or deterioration in quality. SOLUTION: An upper end of a lateral drum-type drying chamber 3 is provided with an air blowing port 11 for blowing dry air; an opposing position of the air blowing port 11 at the upper part of the drying chamber 3 is provided with a gas discharging port 12 for discharging odorous air generated from the drying chamber 3 and a lid 2a covering a feeding port 3a of the drying chamber; a lower position of an inner wall of the drying chamber 3 is provided with a plurality of cutter blades 61, 62,...67 fixed in predetermined parallel spacing; and a plurality of agitating vanes 51, 52,...58 rotatably attached to the drying chamber and rotated along the inner circumferential wall of the drum between the cutter vanes. Odorous air discharged out of the discharging port and containing dust and moisture is dust-removed and dehumidified to produce dry air and the air is supplied to the blowing port 11 through the dry air passage 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-temperature drying apparatus for drying an object to be processed in a drying chamber with low-temperature dry air.

[0002]

2. Description of the Related Art Conventionally, for example, when making dry foods such as dried radish and dried vegetables as preserved foods, the objects to be treated are dried cold in winter (December, January, February). By placing it in a humid climate, the moisture inside the raw materials evaporated quickly, and good-quality dry matter was obtained. However, making dry matter on natural sunlight in this way is inconvenient, limited to winter, depending on the weather. Therefore, as a drying device for drying the processing object that is not affected by the weather, a hot-air drying device that blows hot air on the processing object to dry it,
In addition, dry matter has been produced by a vacuum drying apparatus that puts raw materials frozen by evacuating the inside of a container and evaporating (vaporizing) water in the well to dry.

[0003]

However, the above-mentioned hot-air drying apparatus has a drawback that the color is changed or deteriorated when heat is applied. In addition, the above-mentioned vacuum drying apparatus requires a vacuum in the container, so the content is small. In addition, the cost of producing a vacuum device and a container that requires the strength to withstand vacuum increases, and the dry matter is provided at a low price. I couldn't.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional circumstances, and has been made to dry raw materials with low-temperature dry air while agitating the raw materials. The purpose is to provide.

[0005]

The invention according to claim 1 of the present application relates to a low-temperature drying apparatus, which has an input port for inputting an object to be processed having an open upper portion, and takes out the object at a predetermined position in a lower portion. A hollow horizontal drum-shaped drying chamber having an outlet, at the upper end of the drying chamber, an outlet for blowing dry air into the drying chamber, and at an upper position of the drying chamber opposite to the outlet, An exhaust port for exhausting odorous air containing dust and moisture generated from the drying chamber, an input port of the drying chamber, the air outlet, a lid covering the exhaust port, and an interior wall of the drying chamber At the lower portion, a plurality of cutter blades attached at predetermined parallel intervals, a plurality of stirring blades rotatably attached to the drying chamber, and rotate along the drum inner peripheral wall between the cutter blades, A drive motor that rotationally drives the stirring blade; The odorous air containing dust and moisture which are exhausted from the mouth, deodorization, dust, and dry air generator which feeds to generate dry air dehumidified, the outer circumferential surface of the drying chamber,
A low-temperature drying device, comprising: a dry-air ventilation passage that extends from the dry-air generation unit to the outlet. Also,
The invention according to claim 2 of the present application relates to the low-temperature drying device according to claim 1, wherein the low-temperature drying device has a heater attached to the inside of the dry air ventilation passage that is in contact with an outer peripheral surface of the drying chamber. Features. Furthermore, the invention according to claim 3 of the present application relates to the low-temperature drying device according to claim 1 or 2, wherein the dry air generation unit includes odor containing dust and moisture exhausted from the exhaust port. A deodorizing and deodorizing unit that performs deodorization and dedusting of air, and a cooling unit that cools and condenses moisture of air including moisture sent from the dust removing and deodorizing unit. And a fan that generates high-temperature dry air by being compressed by a compressor and sends the generated dry air to the dry-air ventilation path.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a low-temperature drying apparatus according to the present invention will be described.
And will be described in detail with reference to the drawings. Fig. 1
FIG. 2 is a side sectional view of the drying apparatus 1. Figure
1, in FIG. 2, 2 is an apparatus main body, 3 is an inlet 3a at the top.
A drying chamber in which an object to be dried is placed,
A rotating shaft attached to the drying chamber 3;₁, 5₂, 5
₃, ... 5₈Agitates the object to be treated in the three drying chambers.
Stirring blade, 6 ₁, 6₂, 6₃, ... 6₇Is the drying room
3, a plurality of cutter blades attached to the lower part of the room,
7 is a drive motor for driving the rotation shaft 4 to rotate,
8 is a motor for transmitting the rotational power of the drive motor 7.
The pulley 9 on the data side transmits rotational power to the rotary shaft 4.
The pulley 10 on the drying chamber side for cleaning
The rotation power of the dryer 8 is transmitted to the pulley 9 on the drying chamber side.
It is a belt for.

An outlet 11 is located at the upper end of the drying chamber 3 and blows out low-temperature dry air. An upper end 12 of the drying chamber 3 is located opposite the outlet 11. An exhaust port 13 for discharging odorous air containing dust and moisture generated from the object to be treated placed in the drying chamber 3;
An exhaust pipe through which the air from the exhaust port 12 passes;
Is a dry air generating unit that removes deodorization and dust from the air and performs dehumidification, 21 is a dry air ventilation passage through which the dried air is passed, and 22 is a chamber that connects the drying chamber 3 and the pipe 15. This is a heater for heating the temperature of the passing air to a predetermined temperature.

The main body 2 is made of a hard material having a predetermined size.
The drying chamber 3, the drive motor 9, the deodorizing / dedusting / dehumidifying unit 15, which constitutes the low-temperature drying apparatus 1 of the present invention, are accommodated, and an object to be processed is put into the drying chamber 3 on an upper surface thereof. For this purpose, the inlet 3a of the drying chamber 3 and the outlet 1
1 and an openable and closable cover 2a for covering the exhaust port 12 are provided. On the front surface, an object to be processed dried in the drying chamber 3 is taken out, the drive motor 9, the deodorizing and dehumidifying unit 15 and the like are provided. A front door 2b that opens and closes when performing maintenance or the like is provided.

The drying chamber 3 has a capacity of 5 in this embodiment.
This is a hollow horizontal drum-shaped container having a size of about 0 liter (l), having an inlet 3a at the top and an outlet 3b at the lower part of the front surface for taking out the processed material. An opening 3a of the drying chamber 3 opens and closes the lid 2a attached to the upper surface of the apparatus main body 2, and an object to be dried is introduced into the drying chamber 3. Also, the outlet 3b
The openable and closable removal door 3b ₁ is disposed, is the lower side,
Hinged 3b ₂ and the like, the upper side, fastened in a removable fastener 3b _3, has a configuration that opens when retrieving treated. The rotating shaft 4 is a column having a predetermined length and a predetermined diameter. One end of the rotating shaft 4 rotates around the center bearing 3f of the one side surface 3d of the drying chamber 3, and the other end rotates around the center bearing 3e of the other side surface 3c. Mounted as possible.

[0010] stirring blade _{5 1,} 5 _2, 5 3, ... _{5 8,} which said the rotating shaft 4 is mounted with a predetermined gap, to stir the object to be processed placed in the drying chamber 3 It is. These stirring blades _{5 1,} 5 _2, 5 3, ... _{5 8,} in this embodiment, each consist battledore shape in which the support portion 5b is attached to a predetermined size of the metal plate 5a, flat metal plate 5a A supporting portion 5b is attached to the rotating shaft 4 by an adhesive means such as welding so that the surface is in the rotating direction and the tip rotates along the inner wall of the drying chamber 3. This stirring blade 5
In the present embodiment, when the object to be processed is dried, the object is dried by the rotating shaft 4 in the direction A as shown in FIG. (Backward, upward from the back).

The cutter blades 6 ₁ , 6 ₂ , 6 ₃ ,... 6
_In this embodiment, reference numeral ₇ denotes a plurality of metal plates made of, for example, stainless steel, which are attached to a lower portion of the drying chamber 3 and are attached in parallel to gap positions where the stirring blades 5 do not collide when rotated. ing. The cutter blades ₆ 1 _and 6 _2, 6 3, ... _{6 7,} the stirring blade is rotated 5
_{1, 5 2,} 5 3, passes through the gap ... _{5 8,} cutting the object to be processed to be dried to a predetermined size with stirring.

[0012] In this case, wherein when the object to be treated was relatively large, the total stirring blade _{5 1,} 5 _{2, 5} 3, ...
5 _8, all the cutter blades ₆ 1 _and 6 _2, 6 3, ... _{6 7}
DOO is, when cutting the object to be processed at the same time, the cutter blades ₆ 1 _and 6 _2, 6 3, ... _{6 7} or, the stirring blade ₅ 1,
5 _{2, 5} 3, ... _{5 8,} wherein since a large load to the rotary shaft 4 and the drive motor 7 occurs, stirring blades _{5 1, 5} 2,
5 ₃ so as not to pass through at the same time gap ... _{5 8,} the mounting position of the cutter blades ₆ 1 _and 6 _2, 6 3, ... _{6 7} are different.

[0013] That is, first, passed through the cutter blades ₆₁ are the stirring blades _{5 1} and the gap between the agitating blades _{5 2,} the gap between the cutter blades _{6 7} the stirring blades _{5 7} wherein the stirring blades _{5 8} and, then, the stirring blades 5 ₃ gaps cutter blades 6 ₂ and the agitating blades 5 _2, passes through the gap between the stirring blades 5 ₇ cutter blades 6 ₆ and the stirring blades 5 ₆ followed hand,
The stirring blade cutter blades _{6 3 5 3} and the agitating blades _{5 4}
The gap, through the gap between the stirring blades 5 ₆ cutter blades 6 ₅ and the stirring blades 5 _5, finally the cutter blades 6
₄ is mounted to pass through the gap between the stirring blade 5 ₅ and the stirring blade 5 _4. These the cutter blades ₆ 1 _and 6 _2, 6 3, ... _{6 7} heat is conducted by the heater 22 attached to the outer circumferential surface of the drying chamber 3,
The heat promotes drying of the object.

The drive motor 7 is driven forward through the rotary shaft 4.
Note 5₁, 5₂, 5₃, ... 5 ₈Drive to rotate
The rotational force of the drive motor 7 is
A bell from the motor-side pulley 8 provided on the motor 7
Directly or connected to the rotary shaft 4 through
And transmitted to the drying chamber side pulley 9 provided in
5₁, 5₂, 5₃, ... 5₈Is rotated at about 1 revolution / minute.
It is something to make. Note that, in this embodiment,
Stirring blade 5₁, 5₂, 5₃, ... 5₈To rotate the
It is transmitted by the pulleys 8, 9 and the belt 10.
But this can be done with gears or with gears
Chain or other transmission means, and
Not something.

Dry air is blown out from the upper edge of the drying chamber 3 from the outlet 11 to dry the workpiece in the drying chamber 3. In addition, a blowing plate 11a and a blowing cover 11b are attached to the blowing port 11 so that the blown dry air is efficiently blown toward the object to be processed. In the present embodiment, 6 m ³ / A minute amount of air is blown out. An exhaust pipe 13 is piped from an exhaust port 12 provided at an upper end of the drying chamber 3 to the drying air generation unit 14, and contains moisture and dust generated from an object to be processed in the drying chamber 3. The odor air is sent to the dry air generation unit 14.

The dry air generating section 14 includes a dust removing / deodorizing section 15
, A cooling unit 16, a condensing unit 17, and a compressor 18
, A drain pipe 19 and a fan 20, and the air that has been dried and deodorized by these is sent to the drying chamber 3 through the dry air ventilation passage 21. The dust removing and deodorizing section 15 blows odorous air containing moisture and dust from the object to be treated discarded through the exhaust pipe 13 onto water or mist (atomized water). It falls down with moisture, and the odor is adsorbed by the water, removing dust and odor from the air to form air containing only moisture.

For example, when a predetermined amount of water is put into a container and the air is blown onto the water surface from a pipe having a diameter of, for example, about 50 mm to 70 mm at a predetermined air flow and at a predetermined angle, water splashes on the water surface and small water particles are formed. Are distributed above the container as mist. The relatively large dust in the air absorbs water and sinks in the water, and the relatively small dust is
Drops by absorbing water from mist in the air. Further, as for the odor in the air, the odorous substance is adsorbed on the outer peripheral surface of the mist distributed above the container. Then, when the mist adsorbing the odorous substance and the air containing moisture pass through a filter made of a metal net or the like, the mist adsorbing the odorous substance falls on the water surface in a form dissolved in water.

The air containing moisture from the deodorizing and deodorizing section 15 is cooled in the cooling section 16 and liquefied by the condensation of the moisture. When the air is heated in the condensing section 17, it becomes dry air at a predetermined temperature. The fan 20 sends air to the dry air passage 21. That is, a refrigerant pipe for circulating a refrigerant (not shown) is provided between the cooling unit 16 and the condensing unit 17, and the refrigerant circulating in the cooling unit 16 is expanded by an expansion valve (not shown) to a low temperature. When the moisture-containing air passes through the section 16, heat is exchanged with the refrigerant, and the moisture condenses and is drained through the water distribution pipe 19. Also,
The refrigerant circulating in the condensing section 17 is
The air which has been pressurized by 8 and has a high temperature is passed through the condensing section 17 and exchanges heat with the refrigerant to become dry air having a predetermined temperature.

The fan 20 blows the dried air into the drying air ventilation passage 21 at a predetermined air volume. The drying air blown by the fan 20 is supplied to the drying chamber 3 through the drying air ventilation passage 21. Is blown out from the blowout port 11. The drying air passage 21 communicates from the fan 20 to the outlet 21, and a pipe having a predetermined diameter extends from the fan 20 to the center of the outside of the bottom of the drying chamber 3. Is connected along the outside of the cylindrical surface of the drying chamber 3 from the substantially center to the outlet 11 of the drying chamber 3. The heat of the dry air blown into the dry air ventilation passage 21 is generated by the cutter blades 6 ₁ , 6 ₂ , 6 ₃ ,... 6 ₇ attached from the cylindrical surface of the drying chamber 3 to the inside of the drying chamber 3. It is a configuration to conduct to.

The heater 22 is provided in the dry air passage 21.
And at a predetermined position outside the cylindrical surface of the drying chamber 3.
The temperature of the drying chamber 3 is set by a temperature setting device (not shown).
Is set from room temperature to about 150 ° C, and the appropriate heat
Is generated. Dry air heated by the heater 22
Is blown from the dry air passage 21 to the drying chamber 3
Both are installed inside the drying room 3 and inside the drying room 3
Cutter blades 6 ₁, 6₂, 6₃, ... 6₇Biography
It is guided and heated to a predetermined temperature to sterilize the object.

Next, by using the low-temperature drying apparatus 1 having the above-mentioned structure, for example, an object to be treated, such as green onions and tea leaves, which turns brown when heated, is dried at a low temperature so that the green onions and tea leaves are not discolored or deteriorated. The state of drying while blue is described. The object to be dried at a low temperature is 70% of the capacity of the drying chamber 3 (for example, 35 liters for 50 liters).
Liter), and the lid 2a of the apparatus main body 2 is opened, and is put into the drying chamber 3 through the inlet 3a.

When the workpiece is loaded, the temperature of the heater 22 is set to, for example, 20 ° C., a switch (not shown) is turned on, and the low-temperature drying apparatus 1 is operated. When a switch (not shown) is turned on, the drive motor 7 rotates, and the motor-side pulley 8 of the drive motor 7 rotates. The rotational power of the motor side pulley 8 is transmitted to the drying chamber side pulley 9 via the belt 10,
The rotational power, dry room stirring blade 5 ₁ provided 3,
5 _2, the rotary shaft 4 ... _{5 8} is mounted, one rotation /
The object to be processed is rotated in the direction A at a speed of
_{1, 5} 2, is agitated by ... _{5 8.}

At the same time, the compressor 18 and the fan 20 of the drying air generator 14 are operated, and the dried air at the set temperature (about 20 ° C.) is supplied from the outlet 11 of the drying chamber 3 in the present embodiment. Then, the air volume is about 6m ³ / min and the drying room 3
Is blown out in the room direction. With this dry air,
Moisture is quickly vaporized from the processing object in the drying chamber 3 (steaming).
Then, odorous air containing moisture together with dust generated by agitation of the processing object is exhausted to the exhaust port 12. Then, the odorous air containing the dust and the water vapor is supplied to the exhaust pipe 1
3 and is sent to the dry air generator 14.

In the dry air generating unit 14, similarly to the above, the dust and deodorizing unit 15 removes the dust and odor of the air, and when the moisture contained in the air is cooled by the cooling unit 16, it is condensed and removed. When heated in the condenser 17, dry air at a predetermined temperature is generated. The water generated at this time is drained through a drain pipe 19, and the dried air is
The object to be processed, which is blown out from the air outlet 11 by the fan 20 and passed through the dry air passage 21 and is stirred in the drying chamber 3, is dried. When the low-temperature drying apparatus 1 of the present invention into which the object to be treated is put into operation as described above is operated for about 6 to 8 hours, it is possible to obtain a desired treated article (dry matter) such as dried green onions and dried tea leaves. take out the attached removal door 3b ₁ the open 3b. In addition, when taking out a processed material (dry matter), based on the mounting position of the outlet 3b,
The stirring blades 5 _1, 5 _2, a ... 5 _8, wherein the rotated opposite to the direction A, may be taken out the process of the drying chamber 3.

The low-temperature drying apparatus 1 of the present invention can also be used as a garbage disposal apparatus for drying garbage and converting it into compost or the like. Next, drying of garbage such as vegetable waste and leftover food will be described. An object to be dried such as garbage to be dried is thrown in from the inlet 3a of the drying chamber 3 by opening the lid 2a of the apparatus main body 2. At this time, about 70% of the capacity of the drying chamber 3 or less is charged in the same manner as described above.

When an object to be processed is loaded, the heater 22
The temperature is set to, for example, 60 ° C.
The switch (not shown) is turned on to operate the low-temperature drying device 1.
When a switch (not shown) is turned on, the drive motor 7 rotates.
The motive power is transmitted to the rotating shaft 4, and the stirring force provided in the drying chamber 3 is provided.
Stirring blade 5₁, 5₂, ... 5₈But the direction A at a speed of 1 revolution / minute
Rotate in the direction. The object to be processed is a stirring blade 5₁, 5₂,
・ 5₈Rotates, the cutter attached to the drying chamber 3
ー Blade 6₁, 6₂, ... 6₇But the stirring blade 5₁, 5₂,
..5 ₈Through the gap of the impeller 5₁, 5₂, ... 5₈
And cutter blade 6₁, 6₂, ... 6₇To a predetermined size
Sheared. At this time, the oil contained in the object is
As it is adsorbed on the workpiece, moisture evaporates and
Disperse in.

The dust generated by the agitation of the object to be treated and the odorous air containing moisture are blown from the exhaust port 12 to the dry air generator 14 in the same manner as described above, and the dust and odor are removed by the dust remover / deodorizer 15. Subsequently, when moisture is dewed on the cooling unit 16 and dehumidified, dry air is generated.

When the dry air passes through the dry air passage 21, the dry air is heated to a predetermined temperature by the heater 22 and is blown out from the blow-out port 11.
2 is supplied from the drying chamber 3 to the cutter blades 6 ₁ , 6 ₂ ,.
- 6 ₇ conducted, stirred while heating the drying chamber 3 inside the garbage. As a result, the processing time for drying the garbage is reduced. When the garbage drying process is completed, the garbage is taken out from an outlet (not shown), and then the temperature of the heater 22 is set to 10
When the temperature is set to 0 ° C. or higher and the low-temperature drying device 1 is operated for about 10 minutes, the interior of the drying chamber 3 can be sterilized.

In the above-described embodiment, the description has been made with the configuration in which seven cutter blades attached to the drying chamber are attached and eight stirring blades are used. However, depending on the size of the drying chamber and the material to be dried, The number and the mounting positions are not particularly limited. In the above embodiment, the capacity of the drying chamber is set to 5
Although described as 0 liter (l), the capacity of the drying chamber is not particularly limited.

[0030]

As described above, according to the low-temperature drying apparatus of the present invention, since low-temperature dry air is blown onto the object, even if the object is discolored or deteriorated when heated, it can be dried naturally. Similarly, drying can be performed at a low temperature, so that drying can be performed with low fuel consumption. Also,
The low-temperature drying apparatus of the present invention stirs the object to be processed placed in the drying chamber with the stirring blade, and also conducts heat of a predetermined temperature from the heater to the inner wall of the stirring chamber and the cutter blade plate to dry. The processed material is evenly dried in a short time.

Further, according to the low-temperature drying device of the present invention,
Since the odor generated from the object to be treated (garbage) is adsorbed by mist and the mist is drained as water, there is almost no bad smell. Further, in the low-temperature drying apparatus of the present invention, the cutter blade is attached to the drying chamber, and the object to be processed is agitated while being sheared by the cutter blade and the stirring blade. Since the object (garbage) can be dried, the size of the apparatus can be reduced with respect to the capacity. Furthermore, since the garbage is dried at a relatively low temperature, even if the garbage contains oil, it is hardly eluted, and there is no scorch or smoke generated by heating.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a low-temperature drying apparatus according to an embodiment of the present invention.

FIG. 2 is a side sectional view of the low-temperature drying apparatus according to one embodiment of the present invention.

[Explanation of symbols]

1 ... low-temperature drying device 2 .. device main body 3 ... drying chamber 4 ... rotary shaft 5 _{1, 5} 2, ... _{5 8} ... stirring blade 6 _{1, 6} 2, ... _{6 7} .. cutter blades 7. Drive motor 8. Motor side pulley 9. Drying room side pulley 10. Belt 11. Blowout outlet 12. Exhaust port 13. Exhaust pipe 14. Dry air generation unit 15. Dedusting / deodorizing unit 16. Cooling unit 17. Condensing unit 18. Compressor 19. Drain pipe 20. Fan 21. Dry air ventilation passage 22. Heater

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3L113 AA06 AB02 AC08 AC16 AC25 AC46 AC48 AC49 AC52 AC57 AC58 AC59 AC63 AC67 AC72 AC75 AC76 AC79 AC83 AC85 AC87 AC90 BA01 BA16 BA20 CA11 CA15 DA06 DA10 DA11 DA14 DA24

Claims (3)

[Claims] 1. A hollow horizontal drum-shaped drying chamber having an input port into which an object to be processed having an open upper portion is inserted, and an outlet for taking out the object to be processed at a predetermined lower position, and an upper end of the drying chamber An outlet for blowing dry air into the drying chamber; and an exhaust port for exhausting odorous air containing dust and moisture generated from the drying chamber at a position opposite to the air outlet above the drying chamber. An inlet of the drying chamber, the outlet, a cover covering the exhaust port, and a plurality of cutter blades attached at predetermined parallel intervals at a lower portion of the interior wall of the drying chamber. A plurality of stirring blades rotatably mounted in the drying chamber and rotating between the cutter blades along the inner peripheral wall of the drum; a drive motor for driving the stirring blades to rotate; and dust exhausted from the exhaust port Deodorizes and removes odorous air containing moisture and moisture A dry air generating unit that generates and sends out dry air by dehumidifying, and a dry air ventilation passage that is provided on the outer peripheral surface of the drying chamber from the dry air generating unit to the outlet. Drying equipment. 2. The low-temperature drying device according to claim 1, wherein the low-temperature drying device includes a heater installed in the drying air ventilation passage that is in contact with an outer peripheral surface of the drying chamber. 3. The dedusting and deodorizing unit for deodorizing and deodorizing odorous air containing dust and moisture exhausted from the exhaust port, and the air containing moisture sent from the dedusting and deodorizing unit. The cooling water is cooled and dew-condensed in a cooling unit, and the air sent from the cooling unit is compressed by a compressor in a condensing unit to generate high-temperature dry air, and the generated dry air is passed through the dry air ventilation. The low-temperature drying apparatus according to claim 1 or 2, further comprising a fan that blows air to a road.