JPH0530432B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a manufacturing apparatus for obtaining deodorized fine soybean powder, and more specifically to the structure of a deodorizing apparatus.

(Prior Art) Many production devices of this type have been known in the past. For example, as shown in the production method and device described in Japanese Patent Publication No. 19946-1994, washed soybeans are Although there are some delays, it can be said that the normal process is to obtain deodorized fine soybean powder by deodorizing, dehydrating, and pulverizing. In this kind of manufacturing process,
Attempts have been made to deodorize the process using various chemical additives, but this is undesirable due to the inherent nature of soybeans as a low-risk health food and the rising cost of requiring separate equipment and additives.

In other words, soybeans, along with their excellent nutritional value,
Demand is extremely high as a low-risk health food, and there is a need for technology that can quickly and inexpensively provide deodorized soybeans with good flavor. In this regard, the technique described in Japanese Patent Application Laid-open No. 114159/1983 attempts to deodorize soybeans using heated steam.

(Problems to be Solved by the Invention) The apparatus disclosed in JP-A-60-114159 is an apparatus for producing deodorized fine soybean powder by deodorizing and pulverizing washed soybeans. Set up a tube,
A screw-shaped rotary conveyor is installed in the inner cylinder, rotary valves are provided on the inlet and outlet sides of the box, and a heated steam supply port is provided in the upper center of the box. Although it constitutes a deodorizing device, further improvements are desired in the transportation means used in processing steps in this device. In other words, in the above device, the entire inner cylinder is made of roll-processed punching material (a metal plate with many holes), so the inner surface of the inner cylinder is formed around the holes in the punching material. It has a slightly uneven surface. According to the inventor's experiments using the above device, the temperature and pressure of the heated steam to be applied,
Depending on the speed at which the soybeans are transported, some of the soybean grains that have been crushed in the previous process (hulling process) remain on the inner wall of the inner cylinder and adhere to the wall surface. Put it away. It is unclear whether this is caused by the uneven surface mentioned above, or because the water vapor is unevenly distributed, or whether there is a problem with the water vapor once entering the inner cylinder coming out through the holes. However, some of the soybeans actually stay on the inner wall of the inner cylinder and adhere to the wall surface. The soybeans that have remained and adhered to the surface are exposed to heated steam for a long time and become charred (depending on the moisture content, soybeans generally become charred and change color from yellow to black at temperatures above 10°C), and some of this is detached. There is a problem in that the soybeans are mixed with unburned soybeans and transported, causing the final product to turn gray in color.

(Means for Solving the Problems) The present invention has been made in view of the above circumstances, and provides a deodorized soybean flour production device that can improve deodorization efficiency without using any chemical additives. The first purpose of this invention was to eliminate the drawbacks of the device described in the above publication, and the second purpose was to eliminate the drawbacks of the device described in the above-mentioned publication.

That is, the present invention is based on the knowledge that deodorized soybeans of good quality can be obtained when heat treatment is performed under a constant pressure in the deodorizing process where pressure, temperature, and time are correlated. It is carried into the body to maintain a constant pressure, and at that time,
Based on the knowledge that high-quality deodorized soybeans can be obtained by increasing the area that comes into contact with heated steam, the heating process is carried out quickly and smoothly by adding heated steam while stirring.

To explain this in detail, the present invention provides an apparatus for producing deodorized fine soybean powder by deodorizing and pulverizing washed soybeans. A conveyor is attached, a rotary valve is provided on the inlet side and an outlet side of the box, and a heated steam supply port is provided in the upper center of the box to constitute a deodorizing device, and the rotary conveyor is equipped with a rotary valve. A plurality of notches are provided in the wing of the machine, and the inner cylinder is constructed by connecting two half-cylindrical parts that can be divided into upper and lower halves, and providing a wire mesh on the upper part.

(Function/Effect) With this configuration, since the blades of the rotary conveyance machine are provided with a plurality of notches, the soybeans thermally expanded by the heated steam will not form lumps between the blades of the screw. , the area in contact with the above increases due to proper stirring. In addition, the screw blades provide the thrust for transporting soybeans, and since only the top surface of the inner cylinder is made of wire mesh and the other parts are plate-like materials, heated steam is supplied and held within the cylinder. Moreover, the movement of processing materials is smooth, and as a result, high-quality deodorized soybean flour can be obtained. In addition, since the inner cylinder is constructed by connecting two half-cylindrical pieces that can be divided into upper and lower halves, it is extremely easy to assemble the device and periodically disassemble and inspect it for maintenance. becomes possible.

In this way, it was confirmed that high quality deodorized soybean flour could be obtained using the deodorized soybean flour manufacturing apparatus according to the present invention, as described later.

(Example) The present invention will be described below based on an example shown in the drawings.

Fig. 1 is a block diagram showing a deodorized soybean flour manufacturing apparatus according to the present invention.From left to right, the dehulling device A dehulls raw soybeans, and the deodorizing device B deodorizes the soybeans with heated steam while stirring them in a sealed box. Next, there is a flash drying device C that coarsely crushes, dries, and transports the deodorized soybeans, a pulverizer D that finely pulverizes these dried coarsely pulverized soybean grains, and a packaging device that stores the product soybean flour in bags. It is equipped with E.

In the dehulling device A, the raw soybeans supplied from the hopper are dehulled by a dehulling machine, sorted by a sieve, the dehulled soybeans are supplied to the next process, and the skin part is removed by a dust collector.

The dehulled soybeans are conveyed to a hopper and sent to the next process, deodorizing equipment B. As shown in FIG. 2, this deodorizing device B includes an inner cylinder 2 provided inside a sealed box 1, a screw-shaped rotary conveyor 3 mounted inside the inner cylinder, and an inlet of the box 1. Rotary valves 4, 4 are disposed on the side and outlet sides, and a heated steam supply port 5 is provided at the upper center of the box, so that water is supplied into the box 1 from the rotary valve 4 on the inlet side. The supplied soybeans are conveyed to the opposite side in a predetermined time while being stirred by the rotary conveyor 3 in the inner cylinder 2, during which time they are heated with heated steam, and then passed through the rotary valve 4 on the outlet side.
It is then transported to the outside of the box 1.

Here, a preferred embodiment of each component of the deodorizing device B will be described in detail. The inner cylinder 2 is constructed by connecting a half-cylindrical body that can be divided into two halves into an upper and a lower part with bolts and wing nuts. Consideration has been made to form the inner cylinder with a wire mesh 6 so that a sufficient amount of heated steam can be supplied into the inner cylinder. Furthermore, in the lower part of the inner cylinder 2,
A water drain hole (not shown) is provided. In addition, 7 in the figure is a drain pipe provided in the box 1.

Although the rotary conveyance machine 3 has a screw shape as described above, it is not a mere screw conveyor. That is, when this rotary conveyance machine 3 was initially configured with a commonly used screw, it was found that the soybeans thermally expanded by the heated steam formed lumps between the blades of the screw and were not stirred. Therefore, in the embodiment, a notch 9 is appropriately provided in the blade 8 of the screw to solve this problem. In other words, the blades 8 are not continuous, but basically take the form of screw blades, but are provided with notches 9 to create an intermittent blade structure, which provides both stirring function and thrust. It is something that

The rotary valve 4, as shown in FIG.
A rotor 12 is pivotally supported within a casing 11, and soybeans are stored and supplied into pockets 13 of the rotor 12. On both sides of the rotor 12, there are covers for closing the pockets 13, as shown in FIG. A plate 14 is provided. Normally used rotary valves use this cover plate alone to ensure airtightness on both sides of the rotor, but as this area thermally expands under the influence of heated steam, gaps are created between the members, making it difficult to maintain airtightness. It is something. Therefore, in this embodiment, as shown in FIG. 5, ring-shaped members 15 made of Teflon or the like are brought into pressure contact with both ends of the rotor 12. To be more specific, in the embodiment, a ring-shaped stabilizing plate 14a is fitted around the outer periphery of the cover plate 14, and ring-shaped members made of Teflon are attached to the outside of the stabilizing plate 14a and in sliding contact with both ends of the rotor 12. 15, a piston ring 16 is attached to the side thereof to maintain airtightness in the radial direction, and these are elastically pressed by a pressing device 18 via a ring-shaped pressing plate 17. This pressing device 18
The rod 20 is urged to protrude by a compression spring 19, and a bolt 21 is screwed into the back so that it can be freely retracted. By turning this bolt 21, the pressing force against the ring-shaped member 15 made of Teflon can be adjusted. In the example,
Four sets of this pressing device 18 are arranged on each side of the rotor 12. In FIG. 4, a through hole 11a is provided in the casing 11 between the holding plate 17 and the pressing device 18, but it is preferable to provide at least two through holes 11a. That is, by supplying air at a predetermined pressure from one through hole to the other, the airtightness of the Teflon ring-shaped member 15 can be made even more effective, and at the same time, this air can cause the rotary valve 4 to It also deodorizes well. This air supply may be performed at predetermined time intervals or continuously, and should be operated appropriately in consideration of the amount of soybeans passing through the rotary valve 4.
In FIG. 3, a through hole 11b is provided in the casing 11 of the rotary valve 4 on the inlet side.
This through hole 11b functions as a pressure adjustment hole when the rotor 12 returns.

In the flash drying device C, the soybeans conveyed to the outside of the box 1 from the rotary valve 4 on the outlet side are coarsely pulverized in heated drying air, and this soybean flour is forcibly conveyed to the next process using the heated drying air. It is a device that does In the embodiment, as shown in FIG. 6, a heating blower 22 and a cage mill 23 are connected to each other.
The surface area of the soybeans coarsely pulverized by the cage mill increases, and by adding hot air to this, the drying efficiency is significantly improved, and the soybean grains are forcibly conveyed to the next process by the hot air. In other words, coarse pulverization, drying, and conveyance are performed all at once in this flash drying device C, resulting in shortened process steps and labor savings.

These dried coarsely ground soybean grains are ground into 150 to 200 meshes in a pulverizer D, and each is stored in a bag in a packaging device E to become a product.

In the utility equipment of the example, Power: 150 (KW) Steam: 1000 (Kg/h) Air: 500 (l/min) If The product soybean is Moisture: 3.4 (%) Protein: 38.6 (%) Lipid: 25.9 (%) Fiber: 4.7 (%) Sugar content: 25.0 (%) Energy: 485 (kcal/100g) The process specification in this case is Soybean flour production capacity: 300 (tons/month) Production capacity per hour: 600 (Kg/h) Product soybean powder particle size: 150~200 mesh Product soy flour moisture: 4 (%) or less We were able to realize this.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing a deodorized soybean flour manufacturing apparatus according to the present invention, Fig. 2 is a vertical sectional view showing an embodiment of the deodorizing device, and Fig. 3 is a partially longitudinal sectional side view showing a rotary valve. Figure 4 is a partially vertical front view of the same as above, Figure 5 is an enlarged view of section be. A... Dehulling device, B... Deodorizing device, C... Flash drying device, D... Fine grinding device, E... Packaging device,
1...Box, 2...Inner tube, 3...Rotary conveyor, 4
...Rotary valve, 6...wire mesh.

Claims (1)

[Claims] 1. In an apparatus for producing deodorized fine soybean powder by deodorizing and pulverizing washed soybeans, an inner cylinder 2 is provided inside a sealed box 1, and a screw-shaped rotary conveyor 3 is installed in the inner cylinder, Rotary valves 4, 4 are provided on the inlet and outlet sides of the box 1, and a heated steam supply port 5 is provided in the upper center of the box.
A deodorizing device is constructed by providing a plurality of notches 9 in the blades 8 of the rotary conveyor 3, and
This is a deodorized soybean flour manufacturing device, characterized in that it is constructed by connecting semi-cylindrical pieces that can be divided into upper and lower halves, and providing a wire mesh 6 on the upper part.