JPH06133752A - Dryer for viscous food - Google Patents

Abstract

PURPOSE:To uniformly dry a clayey bean jam, etc., having a high viscosity into a powdery form in a short time without causing scorch. CONSTITUTION:This dryer is equipped with a straight cylindrical container 3 having an inner peripheral surface 7 provided with arms 19 and further a scraping member 25 in elastic contact with the inner peripheral surface 7 at the tip of each arm 19. The container 3 is heated with a heating means 40 to boil and cook a viscous food, which is stirred and pulverized under rotating the arms 19 and the scraping members 25. Thereby, the viscous food is dried with hot air from the hot air feeding means 5 and heat from the container 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for drying viscous food such as clay-like bean jam.

[0002]

2. Description of the Related Art Conventionally, for example, a powdered crushed adzuki bean and sugar are put into a container having a bottomed right cylindrical shape opened upward, and the container is heated and stirred by a stirring blade,
An apparatus for producing a clay-like viscous food such as bean paste is known.

In such a prior art, since a gap is formed between the tip portion of the stirring blade and the inner peripheral surface of the container, the viscous food adhered to the inner peripheral surface can be scraped off by the stirring force. It cannot be done, and the adhered matter is fixed by the heat from the container and eventually burns. Further, even if the viscous food is stirred with a stirring blade, there is a problem that a portion that is not sufficiently stirred as a clay-like solid remains and the inside cannot be dried.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a drying apparatus for viscous foods which can surely dry the inside without causing sticking.

[0005]

DISCLOSURE OF THE INVENTION The present invention has a container having a right cylindrical inner peripheral surface and containing a viscous food to be dried, and a container coaxial with the axis of the inner peripheral surface in the container. A stirring means provided with a plate-shaped scraping member elastically abutted on the inner peripheral surface at the tip end portions of a plurality of arms that are driven to rotate around a rotation axis and are arranged at intervals in the circumferential direction, An apparatus for drying viscous foods, comprising: a hot air supply means for supplying hot air into the container, and a heating means for heating the container.

[0006]

According to the present invention, the agitating means is provided in the container having the inner peripheral surface of the right cylindrical shape, and the agitating means comprises a plurality of arms which are rotationally driven around the rotation axis and the tips of the arms. And a scraping member that is elastically abutted on the inner peripheral surface. By rotating and driving each arm around the rotation axis, the viscous food in the container is stirred while being scraped from the inner peripheral surface by the scraping member. Hot air is supplied to the container from the hot air supply means,
The container itself is heated by the heating means. The viscous food scraped up by the scraping member in the container falls by its own weight and abuts on the inner peripheral surface to be crushed. In this way, it is possible to efficiently dry the lumpy viscous food while stirring and crushing it without causing charring.

[0007]

1 is a sectional view showing a drying apparatus 1 according to an embodiment of the present invention, FIG. 2 is a perspective view of the drying apparatus 1, and FIG.
FIG. 2 is a cross-sectional view as seen from the section line a-b-c-d-e-f in FIG. 1. For example, the drying device 1 of this embodiment is used to obtain a powdered bean jam by drying a viscous food containing crushed red beans and sugar. The drying device 1 includes a container 3 in which a viscous food is accommodated, a stirring unit 4 for agitating the viscous food accommodated in the container 3 and a hot air for supplying warm air into the container 3. It includes supply means 5 and heating means 6 for heating the container 3.

The container 3 has a cylindrical body 8 having a right cylindrical inner peripheral surface 7 and end plates 9 and 1 for closing both axial end portions of the cylindrical body 8.
Has 0 and. One end plate 10 has an inlet 11 for introducing the viscous food to be dried, for example, powder obtained by crushing adzuki beans and sugar, and an outlet 13 for taking out the powdery food after drying. Are formed, and the inlet 11 and the outlet 13 are closed by openable doors 14 and 15. Such a container 3 is supported by a base 16 and placed on a floor 17 in the factory.

The stirring means 4 extends between the end plates 9 and 10 and is driven to rotate about a rotation axis that is coaxial with the axis of the container 3, and the rotation axis 18 has one interval in the circumferential direction. A plurality of (three in the present embodiment) substantially T-shaped arms 19 which are opened and fixed, and fixed to the both ends of the rotary shaft in the axial direction at positions different from the positions of the arms 19 in the circumferential direction. Plural (3 in this embodiment) scraping blades 23 and 24 that slide on the inner surfaces 20 and 21 of 10 and the tip of each arm 19 are provided to elastically contact the inner peripheral surface 7 of the container 3. It has a plate-shaped scraping member 25 in contact with. The scraping member 25 is made of a synthetic resin material such as polytetrafluoroethylene (trade name: Teflon), and is arranged so as to extend parallel to the rotation axis of the rotation shaft 18. A sprocket wheel 26 is fixed to one end of the rotary shaft 18 in the axial direction. The rotational force of the motor 27 is reduced by the reduction gear 28, and the sprocket wheel 30 is fixed to the output shaft 29 thereof.
A chain 31 is wound around each sprocket wheel 26, 30 and stretched, so that the rotational force of the motor 27 is transmitted to the rotary shaft 18, and the stirring means 4 is, for example, 5 to 30 r.
It is driven to rotate at pm.

By the arm 19, the lumpy viscous food that is hooked up in the container 3 can be crushed by dropping it onto the inner peripheral surface 7 arranged on the upstream side in the rotation direction. In addition, the scraping member 25 and the scraping blade 23,
Since 24 is provided, the viscous food adhered to the inner peripheral surface 7 and the inner surfaces 20 and 21 of the container 3 can be scraped off, and can be uniformly stirred and dried.

The hot air supply means 5 comprises a gas burner 35, a hot air boiler 37 to which normal temperature air is supplied from a fan 36 at a flow rate of 10 m ³ / min, and a temperature heated by combustion of the gas burner 35. And a ventilation duct 38 that guides the wind into the container 3. In addition, these hot air boilers 3
7, the air duct 38 and the container 3 are covered with a heat insulating material having a thickness of, for example, about 40 mm in order to improve thermal efficiency. The viscous food in the container 3 is dried by such warm air from the warm air supply means 5, and the water evaporated from this viscous food is discharged to the outside from the exhaust duct 39.

The heating means 6 has a steam jacket 40 that covers the lower portion of the container 3, and high-temperature steam is supplied into the steam jacket 40. For example, when boiling powdered bean jam, the container 3 is heated. It is configured so that it can be heated to about 70 ° C.

FIG. 4 is a partial sectional view showing the mounting structure of the arm 19 and the scraping member 25, and FIG. 5 is a sectional view taken along the section line V--V in FIG. A bracket 43 is rotatably connected to a shaft 41 supported by a tip portion of the arm 19, and a base end portion of the scraping member 25 is fitted to the bracket 43. The tip of the scraping member 25 is formed in a taper shape at an angle θ and is configured to be in close contact with the inner peripheral surface 7 of the container 3 over the entire length in the longitudinal direction. Scraping member 25
The bracket 43 is elastically biased by the tension spring 44 in the direction close to the inner peripheral surface 7, that is, in the arrow A direction (see also FIG. 1). Moreover, the scraping member 25 and the bracket 43 are bent to the downstream side in the rotation direction B of the arm 19 with the tip end of the scraping member 25 in contact with the inner peripheral surface 7. Thereby, the scraping member 25 can be surely brought into contact with the inner peripheral surface 7.

By means of the drying device 1 having the above-mentioned structure, clay-like viscous food, which has a relatively high viscosity and is difficult to dry to the inside, can be dried uniformly without burning. it can. According to an experiment conducted by the present inventor, a total of 250 kg of red bean powder and sugar are put in a container 3
It has been confirmed that when it is put into a container, a product having a dryness of 60% is dried to 28%. Moreover, this processing time is about half that of the conventional method, and the yield of the processed products can be improved by uniform drying. Further, when manufacturing bean jam powder, adzuki bean powder and sugar can be put into a container, cooked for about 40 minutes, and subsequently dried for 80 minutes, and these series of processing operations can be performed continuously. It can be processed, and the processing time can be significantly shortened.

It can be easily understood by those skilled in the art that the drying apparatus of the present invention can be suitably applied not only to the viscous food such as bean jam but also to crush and dry pigments and the like. Ah

[0016]

As described above, according to the present invention, since the arm is provided with the scraping member and the viscous food adhered to the inner peripheral surface of the container can be heated and dried while scraping, the conventional method can be used. As described above, the yield can be improved without the occurrence of charring. Further, the viscous food product dropped from above comes into contact with the inner surface of the container and is crushed, so that the inside can be uniformly and efficiently dried, and the drying time can be shortened.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a drying device 1 according to an embodiment of the present invention.

FIG. 2 is a perspective view of the drying device 1.

FIG. 3 is a cross-sectional view as seen from a section line abcdcef of FIG.

FIG. 4 is a partial sectional view showing a mounting structure of an arm 19 and a scraping member 25.

5 is a sectional view taken along the section line VV in FIG.

[Explanation of symbols]

 1 Drying Device 1 3 Container 4 Stirring Means 5 Warm Air Supply Means 6 Heating Means 7 Inner Circumferential Surface 8 Cylindrical Body 9, 10 End Plate 18 Rotating Shaft 19 Arms 23, 24 Scraping Blade 25 Scraping Member 37 Hot Air Boiler 40 Steam Jacket 44 tension spring

Claims (1)

[Claims] 1. A container having a right cylindrical inner peripheral surface and containing a viscous food to be dried; and in the container, rotationally driven about a rotation axis coaxial with the axis of the inner peripheral surface, Stirring means provided with a plate-shaped scraping member elastically abutting the inner peripheral surface at the tip of a plurality of arms arranged at intervals in the circumferential direction, and supplying hot air into the container An apparatus for drying viscous foods, comprising: hot air supply means for heating and heating means for heating the container.