JPH06105663A - Dryer for bean curd shell - Google Patents

Abstract

PURPOSE:To provide a dryer for a bean curd shell capable of continuously drying the bean curd shell with good operating efficiency. CONSTITUTION:This dryer is obtained by providing a transversely installed cylindrical hollow chamber 32, a box cylindrical upper hollow chamber 33, placed above the hollow chamber 32 and having the lower end communicating with the hollow chamber 32, a hot air supply passage 34, having the tip opened to the peripheral surface of the hollow chamber 32 near the bottom of the hollow chamber 32 in the direction of the tangential line to the circumference of the hollow chamber 32, further a bean curd shell feeding passage 35 so as to open its tip to the peripheral surface of the hollow chamber 32 and protrude it between the upper hollow chamber 33 and the hot air supply passage 34, a taking outlet 36 in the upper end on one side of the upper hollow chamber 33, housing many ceramic balls (11-1) to (11-n) in the hollow chamber 32 and making the balls collide with the inner peripheral surface of the hollow chamber 32 and the inner wall of the upper hollow chamber 33 with the supplied hot air.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tofu husk drying device. Specifically, it is intended to provide a tofu husk drying device capable of continuously drying tofu husk (okara) which is a material to be dried with good workability.

[0002]

2. Description of the Related Art A large amount of tofu husks is produced in the process of manufacturing tofu. For example, when 60 kg of soybeans are immersed in water for a predetermined time and then pressed through the necessary steps to extract soymilk, about 90 kg of tofu husks are produced. Therefore, in the production of tofu, how to treat a large amount of tofu husks has been an issue. However, since the tofu husk contains a lot of proteins, it is very apt to rot, and if the temperature is 30 ° C., it will rot in 2 to 3 hours. Further, about 80% of the components of the tofu shell are water, and it is inefficient to transport the tofu shell to another place while containing the water.
Therefore, various tofu shell drying devices have been conventionally proposed in order to facilitate the storage, transportation, and processing of the tofu shell by drying the tofu shell.

FIG. 4 is a vertical sectional side view showing the construction of such a conventional tofu husk drying device (Japanese Patent Laid-Open No. 1-222275).
No. 2). In FIG. 4, reference numeral 32 denotes a cylindrical hollow chamber into which the tofu husk, which is an object to be dried, is supplied, and is provided horizontally on the base 31. 33
Is a box-shaped upper hollow chamber placed above the hollow chamber 32 and having a lower end communicating with the hollow chamber 32. The upper end of one side surface of the upper hollow chamber is a cylinder for taking out dried tofu shells. The take-out port 36 has a projecting shape.

Reference numeral 34 denotes a hot air supply passage for supplying hot air from a hot air generation source (not shown) into the hollow chamber 32, and the tip of the hot air supply passage is opened near the bottom of the hollow chamber 32 on the peripheral surface of the hollow chamber 32. Then, they are arranged along the tangential direction of the circumference of the hollow chamber 32. Reference numeral 35 denotes a tofu shell supply path for supplying the tofu shell into the hollow chamber 32. The tip of the tofu shell is projected between the upper hollow chamber 33 and the hot air supply path 34 by opening the tip on the peripheral surface of the hollow chamber 32. A rotary feeder 37 of an outside air shutoff type for dropping the tofu husks to be supplied is provided above the tip end opening portion thereof. In this conventional example, the upper hollow chamber 33 and the hot air supply passage 34
The structure of the tofu shell supply passage 35 is not particularly limited, but it is preferable to form the tofu shell supply passage 35 in a rectangular cross section having a width substantially equal to the cylinder length of the hollow chamber 32.

Next, the operating state when the tofu-husk drying device having such a configuration is operated will be described. First, hot air having a required wind pressure from the hot air source is supplied into the hollow chamber 32 through the hot air supply passage 34, and the supplied hot air is clockwise along the inner peripheral surface of the hollow chamber 32 in the drawing. As a result, the inside of the hollow chamber 32 is heated. Further, the hot air supplied into the hollow chamber 32 is divided into the upper hollow chamber 33 and rises, and the inside of the upper hollow chamber 33 is also heated. Therefore, the rotary feeder 37
Under the operation of, the tofu shell (not shown) is continuously supplied into the hollow chamber 32 through the tofu shell supply passage 35, and the supplied tofu shell falls toward the bottom of the hollow chamber 32. .
The tofu husks dropped and supplied into the hollow chamber 32 are heated by the hot air supply passage 3
While being dried by the hot air supplied through 4, it rises along the inner peripheral surface of the hollow chamber 32. Then, the tofu husks that have risen in the hollow chamber 32 are the edge portion 38 at the lower end of the upper hollow chamber 33.
Is crushed into small pieces. This pulverization increases the heat transfer area of the tofu shell.

The tofu husks that have been crushed and reduced in weight by drying rise in the upper hollow chamber 33 together with the hot air diverted into the upper hollow chamber 33, and drying is promoted during this rise. And the tofu husks that have been completely dried and turned into powder granules
It reaches the upper end of the upper hollow chamber 33, where it is taken out from the outlet 36 by riding hot air. The tofu husks that are not completely dried during the ascent in the upper hollow chamber 33 remain in the upper hollow chamber 33 until they are completely dried. Upper hollow chamber 33
The residence time inside is automatically controlled by the difference in specific gravity.

On the other hand, the tofu husk, which is not sufficiently lightened by drying in the hollow chamber 32, falls in the hollow chamber 32 without flowing into the upper hollow chamber 33. After that,
Receiving the hot air supplied through the hot air supply passage 34, the inside of the hollow chamber 32 is raised again, and the edge portion 3 at the lower end of the upper hollow chamber 33
8 and is repeatedly left in the hollow chamber 32 until the weight is sufficiently reduced by drying.

As described above, in this conventional example, the tofu husks supplied into the hollow chamber 32 formed in the cylindrical shape are stored in the hollow chamber 3
2 Tofu shell that is crushed by being crushed by colliding with the rim portion 38 at the lower end of the upper hollow chamber 33 after being raised along the inner peripheral surface in the hollow chamber 32 by the hot air supplied along the tangential direction at the bottom The drying is promoted in the upper hollow chamber 33 so that a completely dried tofu shell is obtained.

[0009]

However, soymilk remains in the tofu husk which is the material to be dried. Therefore, according to the conventional example shown in FIG. 4, when the tofu shell is supplied into the hollow chamber 32, the residual soymilk is solidified by receiving hot air, and the inner peripheral surface of the hollow chamber 32 and the tofu shell collide. Then, it adheres to the rim portion 38 at the lower end of the upper hollow chamber 33, which is a portion to be crushed, and burns, and the tofu shell is deposited on the burned solid soymilk and burns. In particular, the tofu shell is thickly accumulated in the shape of a dogleg in cross section at the rim portion 38 at the lower end of the upper hollow chamber 33 and burned. According to an experiment by the inventor of the present application, when the tofu shell drying apparatus according to the conventional example is continuously operated, the tofu shell burned on the inner peripheral surface of the bottom of the hollow chamber 32 starts to burn in about 1 hour. As a result, since it is necessary to stop the operation and scrape out the cinders to the outside for cleaning, continuous operation for a long time is impossible. In addition, a part of the burnt tofu shell may be peeled off, and the separated tofu shell is crushed by hot air to rise in the upper hollow chamber 33, mixed with the dried tofu shell, and taken out from the outlet 36. Therefore, it was necessary to sort them out later. Also, the upper hollow chamber 33
Since the crushed tofu husks also adhered to the inner wall of the car, even if it did not burn, it was necessary to stop the operation from time to time to scrape off the adhered tofu husks.

As described above, in the conventional example shown in FIG. 4, the operation of the apparatus has to be stopped at regular intervals to clean the inside, and the dried and removed from the apparatus is burned from the tofu shell. There is a problem to be solved that it is difficult to dry the tofu husks because it is necessary to select the tofu husks.

Further, according to this conventional example, the hollow chamber 32
A part of the hot air flowing inside blows into the tofu husk supply path 35 to hinder the fall and supply of the tofu husks, so that there is an unsolved problem in that it is difficult to obtain good workability as an apparatus from this aspect as well.

[0012]

[Means for Solving the Problems] In light of the above problems,
The present invention has been made. Therefore, in the present invention, a horizontal hollow cylindrical chamber and a box-shaped upper hollow chamber placed above the hollow chamber and having a lower end communicating with the hollow chamber, the hot air from the hot air source is provided. A hot air supply passage for supplying the tofu shell is provided along the tangential direction of the circumference of the hollow chamber by opening the tip on the peripheral surface of the hollow chamber near the bottom of the hollow chamber, and supplying the tofu shell into the hollow chamber. The tofu husk supply path is provided so as to stand upright between the upper hollow chamber and the hot air supply path with the tip open to the peripheral surface of the hollow chamber, and the outlet for taking out the dried tofu husk is the upper hollow. In a tofu shell drying device protruding from the upper end of one side of the chamber, a large number of ceramic balls (ceramic balls and spherical bodies) of a predetermined diameter are housed in the hollow chamber, and these ceramic balls are
A means of colliding the inner peripheral surface of the hollow chamber and the inner wall of the upper hollow chamber with the hot air supplied was used.

Further, a cross section for preventing the supplied tofu shell from adhering to and depositing on the rim of the lower end of the upper hollow chamber where the tofu shell rising along the inner peripheral surface of the hollow chamber collides. Is provided with a substantially "U" shaped protrusion, and further, a hot air flow rectifying plate for preventing hot air flowing in the hollow chamber from being blown into the tofu husk supply passage is provided at the tip opening portion of the tofu husk supply passage. It was provided so as to be partially shielded.

[0014]

With the above-mentioned structure, the hot air supplied repeatedly causes a large number of ceramic balls to collide with the inner peripheral surface of the hollow chamber and a region of the inner wall of the upper hollow chamber, thereby repeating the interior of the hollow chamber. Even if the tofu shell adheres to the peripheral surface and the inner wall of the upper hollow chamber, it is scraped off and, together with the tofu shell, collides with the inner peripheral surface and the inner wall to further finely crush the tofu shell to further increase the heat transfer area. At the same time as it is increased, it is heated by receiving hot air and becomes a heat source to fly through the hollow chamber and the upper hollow chamber endlessly, so that the temperature distribution in the hollow chamber and the upper hollow chamber becomes substantially uniform.

Further, the protruding portion provided at the rim of the lower end of the upper hollow chamber prevents the tofu shell from adhering to this portion,
The hot air flow straightening plate provided so as to partially block the tip opening of the tofu shell supply path prevents hot air flowing in the hollow chamber from blowing into the tofu shell supply path.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of one embodiment of the present invention will be described with reference to FIG. Here, FIG. 1 is a vertical cross-sectional side view of the tofu-husk drying device according to the present embodiment, and the same reference numerals are given to the components corresponding to those in FIG.

In FIG. 1, the difference from the configuration of the conventional example shown in FIG. 4 is that a large number of ceramic
That is, the balls 11-1 to -n are stored. A large number of ceramic balls 11-1 to 11- used here
As n, the diameter is 1.5 to 6.0 mm and the number of accommodated is 3
000-65,000 pieces (0.8-1.0 in weight)
kg) is preferred (in FIG. 1, ceramic balls 11
The sizes of -1 to n are exaggerated for convenience of explanation. ). Also, the ceramic balls 11-1 to -n
May have the same diameter or may be a mixture of different diameters.

The operating state when the apparatus having such a configuration is operated will be described. When the hot air of the required wind pressure through the hot air supply passage 34 and the tofu shell through the tofu shell supply passage 35 are supplied into the hollow chamber 32, a large number of ceramic balls 11-1 to 11-1 housed in the hollow chamber 32 are supplied. -N receives hot air and repeats collision with the inner peripheral surface of the hollow chamber 32 and the inner wall area of the upper hollow chamber 33 as shown in FIG. In FIG. 2, the manner of movement of the ceramic balls 11-j and 11-k in the hollow chamber 32 and the upper hollow chamber 33 is shown in a simplified manner for convenience of explanation. -1 to -n are the hollow chamber 32 and the upper hollow chamber 33.
It repeatedly bounces inside and flies in all directions. As a result, the tofu husks are separated from the inner peripheral surface of the hollow chamber 32 and the upper hollow chamber 3.
Even if it adheres to the inner wall of No. 3, it is scraped off and burnt of the tofu shell is avoided.

Also, a large number of ceramic balls 11-1
Since ~ -n flies in the hollow chamber 32 and the upper hollow chamber 33 and collides with the inner peripheral surface and inner wall together with the tofu shell, the tofu shell crushed by colliding with the rim portion 38 at the lower end of the upper hollow chamber 33 is Further, the heat transfer area is further increased by further pulverizing, and the heat exchange is performed more efficiently. Moreover, the large number of ceramic balls 11-1 to -n accumulate heat by hot air and emit far infrared rays when heated.
The so-called far-infrared effect is generated, and the air itself becomes a heat source and flies in the hollow chamber 32 and the upper hollow chamber 33. Therefore, the drying efficiency of the device is improved, and the temperature distributions in the hollow chamber 32 and the upper hollow chamber 33 become substantially uniform. According to the experiment, in the conventional example shown in FIG. 4, the tofu husks that have been dried and taken out have variations in the water content in the range of 5 to 8% and the dry state is uneven, whereas in the present example, The moisture content of all the tofu husks taken out is constant at about 7%, and the stability as a drying device can be secured. The components other than the ceramic balls 11-1 to -n in this embodiment are the same as those in the conventional example shown in FIG.

FIG. 3 is a partial vertical cross-sectional side view showing the structure of the essential part of another embodiment of the present invention, and the same reference numerals are attached to the components corresponding to those of the previous embodiment shown in FIG. And explain.

In FIG. 3, the difference from the configuration of the previous embodiment shown in FIG. 1 will be described. The first point is that the projecting portion 21 having a substantially V-shaped cross section is provided at the rim of the lower end of the upper hollow chamber 33 with which the tofu shell rising along the inner peripheral surface of the hollow chamber 32 collides. It is that. This is the edge portion 38 at the lower end of the upper hollow chamber 33 in the conventional example shown in FIG.
Even if the tofu husks adhere to and stick to it, the cross section is "ku".
This is the result of an experiment in which, when it is deposited in a square shape with a certain thickness, it is not further deposited.
By providing 1, the tofu shell is prevented from adhering to the rim of the lower end of the upper hollow chamber 33. The projecting portion 21 may be provided by molding the rim itself at the lower end of the upper hollow chamber 33 into a substantially V-shaped cross section.

Next, the second difference of this embodiment from the structure of the previous embodiment of FIG. 1 is a cross section for preventing hot air flowing in the hollow chamber 32 from blowing into the tofu shell supply passage 35. The arc-shaped hot air flow straightening plate 22 is used for the tofu shell supply path 3
5 is provided so as to partially block the upstream side of the hot air flow of the front end opening of No. 5. Therefore, the hot air supplied through the hot air supply path 34 and flowing along the inner peripheral surface of the hollow chamber 32 does not blow into the tofu shell supply path 35, and the tofu shell continues through the tofu shell supply path 35. The drop supply is surely performed. In addition, it is preferable that the lateral widths of the projecting portion 21 and the heat flow regulating plate 22 be equal to the tube length of the hollow chamber 32. The components other than the projecting portion 21 and the hot air flow regulating plate 22 are the same as those in the previous embodiment shown in FIG.

[0023]

As is apparent from the above description, according to the present invention, a large number of ceramic balls are housed in the hollow chamber and the hot air supplied into the hollow chamber causes the inner peripheral surface of the hollow chamber and By repeating the collision with the inner wall of the upper hollow chamber, the tofu husks supplied to the hollow chamber are scraped off even if they receive hot air and adhere to the inner surface of the hollow chamber and the inner wall of the upper hollow chamber. Therefore, there is no need to clean the inside by occasionally stopping the operation of the equipment, and the trouble of selecting burned tofu husks from the dried tofu husks is also unnecessary. , Good quality dried tofu husk can be obtained with good workability.

In addition, a large number of ceramic balls flying in the hollow chamber and the upper hollow chamber collide with the lower end of the upper hollow chamber to further finely crush the tofu husks to further increase the heat transfer area and to dry. Improve efficiency more. In addition, many ceramic balls receive hot air and fly as a heat source to fly around themselves to improve the drying efficiency, and also make the temperature distribution in the hollow chamber and the upper hollow chamber almost uniform,
It also contributes to obtaining tofu husks that are evenly dried.

Further, since the protruding portion is provided at the rim of the lower end of the upper hollow chamber where the tofu shell rising along the inner peripheral surface of the hollow chamber collides, the upper hollow chamber is particularly prone to sticking and sticking to the tofu shell. It becomes possible to prevent the tofu shell from adhering to the rim of the lower end of the chamber.

Further, a hot air flow rectifying plate for preventing the hot air supplied into the hollow chamber from blowing into the tofu shell supply passage is provided, and the tofu shell is continuously supplied into the hollow chamber through the tofu shell supply passage. Since the supply is ensured, it is possible to realize a tofu husk drying device having good workability. Therefore, the effect of the present invention is extremely large in practice.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing the configuration of an embodiment of the present invention.

FIG. 2 is an operation explanatory view for explaining the manner of movement of the ceramic ball shown in FIG. 1 in a hollow chamber and an upper hollow chamber.

FIG. 3 is a partial vertical cross-sectional side view showing a configuration of a main part of another embodiment of the present invention.

FIG. 4 is a vertical sectional side view showing a configuration of a conventional example.

[Explanation of symbols]

 11-1 to -n Ceramic ball 21 Projection part 22 Hot air flow rectifying plate 31 Base 32 Hollow chamber 33 Upper hollow chamber 34 Hot air supply path 35 Tofu shell supply path 36 Outlet 37 Rotary feeder 38 Edge part

Claims (5)

[Claims] 1. A horizontal hollow cylindrical hollow chamber (32), and a box-shaped upper hollow chamber (33) placed above the hollow chamber and having a lower end communicating with the hollow chamber, A hot air supply path (3 for supplying hot air from a hot air source
4) is arranged along the tangential direction of the circumference of the hollow chamber with the tip opening to the peripheral surface of the hollow chamber near the bottom of the hollow chamber, and for supplying tofu shell into the hollow chamber. A tofu shell supply passage (35) is provided so as to stand upright between the upper hollow chamber and the hot air supply passage with its tip open to the peripheral surface of the hollow chamber, and to remove the dried tofu shell. Exit (36)
In the tofu shell drying device projecting from the upper end of one side surface of the upper hollow chamber, a plurality of ceramic balls (1
1-1 to -n) is housed, a tofu husk drying device. 2. The diameter of the ceramic ball is 1.5 to
The tofu husk drying device according to claim 1, wherein the tofu husk drying device has a size of 6.0 mm and the number accommodated is 3,000 to 65,000. 3. The upper hollow chamber has a cross-section at a rim portion (38) at a lower end of the upper hollow chamber where the tofu shell that has risen along the inner peripheral surface of the hollow chamber upon receiving the hot air collides. The tofu husk drying device according to claim 1, wherein the tofu husk drying device is provided with a protrusion (21) having a substantially "U" shape. 4. The hollow chamber partly shields the upstream side of the hot air flow of the tip opening of the tofu shell supply passage to prevent the hot air flowing in the hollow chamber from blowing into the tofu shell supply passage. The tofu husk drying device according to claim 1, further comprising a hot air flow rectifying plate (22) having an arc-shaped cross section. 5. The tofu shell drying device according to claim 1, wherein the upper hollow chamber is provided with the projecting portion, and the hollow chamber is provided with the hot air flow straightening plate.