JPH0259087B2 - - 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, but for example, as shown in the production method and device described in Japanese Patent Publication No. 19946-1994, washed soybeans are processed through a process. Although there are some delays, the normal process is to obtain deodorized fine soybean powder by deodorizing, dehydrating, and pulverizing.

(Problem to be solved by the invention) Soybeans are in extremely high demand as a low-risk health food in addition to their excellent nutritional value, and there is a need for a technology to quickly and inexpensively provide deodorized soybeans with good flavor. Regarding the manufacturing method, there is still room for improvement in the deodorizing process. In particular, there is an insufficiency in maintaining airtightness.

Of course, attempts have also been made to specifically deodorize by using various chemical additives in the manufacturing process.
This method is undesirable due to the inherent nature of soybeans as a low-risk health food, and the rising cost of requiring additional equipment and additives.

(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 purpose is to

That is, the present invention was made 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. The present invention proposes a structure that can prevent pressure leakage from the rotary valves normally installed on the inlet and outlet sides of the box when soybeans are carried into a sealed box and a constant pressure is maintained.

In other words, the present invention provides a soybean deodorizing device in which rotary valves are provided on the inlet and outlet sides of a box and heated steam is supplied into the box, in which the rotary valve has a rotor in the casing. In addition to being pivotally supported, cover plates are provided on both sides of the rotor to close the pockets, and ring-shaped members are elastically pressed against the ends of both sides of the rotor. A through hole is provided in the casing for supplying and discharging air.
This is intended to maintain pressure.

(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 production 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 apparatus A, the raw soybeans supplied from the hopper are dehulled by a dehulling machine, sorted by a sieve, and 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 they are heat-treated 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-wing blades, but have notches 9 and an intermittent blade configuration, 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 a ring-shaped Teflon plate is fitted on the outside of the stabilizing plate 14a and in sliding contact with both ends of the rotor 12. A member 15 is arranged, and a piston ring 16 is placed on the side thereof.
are attached to maintain airtightness in the radial direction, and these are attached to a pressing device 18 via a ring-shaped holding plate 17.
It is pressed more elastically. This pressing device 18
The rod 20 is biased 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. Furthermore, as shown in FIG.
Two through holes 11a and 11b are provided in the casing 11 between the press device 18 and the press device 18. That is, by supplying air at a predetermined pressure from one of the through holes 11a and discharging it to the other through hole 11b, the air pressure between the pressing device 18 and the holding plate 17 is increased, and the Teflon ring-shaped member 15 is The airtightness of the rotary valve 4 can be further improved, and at the same time, the air can effectively deodorize the rotary valve 4. This air supply may be performed at predetermined time intervals or continuously, and may be operated as appropriate in consideration of the amount of soybeans passing through the rotary valve 4. The through hole 11b also serves 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 the soybean grains are 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 gauge mill 23 are connected.
The surface area of the soybeans coarsely ground by the gauge 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 (1/min) If The product soybean is Moisture: 3.4 (%) Protein: 38.6 (%) Lipid: 25.9 (%) Fiber: 2.4 (%) Ash content: 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.

(Effects of the Invention) As described above, the present invention includes a rotor that is pivotally supported within a casing, a cover plate that closes the pocket on both sides of the rotor, and a cover plate that closes the pocket on both sides of the rotor. Since the rotary valve is configured to elastically press the ring-shaped member and prevent pressure leaks by supplying and discharging air, the pressure leaks that conventionally occur on the side of the rotor can be completely prevented. Therefore, it was confirmed that heat treatment could be performed under constant pressure, and that high-quality deodorized soybean flour could be obtained by this method.

[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 longitudinal 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, 11 ...Casing, 1
1a, 11b...through hole, 12...rotor, 13...
... pocket, 14 ... cover plate, 15 ... ring-shaped member.

Claims (1)

[Claims] 1. In a soybean deodorizing device in which rotary valves 4, 4 are provided on the inlet and outlet sides of the box 1 and heated steam is supplied into the box, the rotary valve 4 is connected to the casing 11.
A rotor 12 is pivotally supported within the rotor, and cover plates 1 are provided on both sides of the rotor to close the pockets 13.
4, furthermore, a ring-shaped member 15 is elastically pressed against both ends of the rotor 12 via a holding plate 17, and in addition, a through hole for supplying and discharging air to and from the casing 11 is provided on the outside of the holding plate 17. 11
A soybean deodorizing device characterized in that a and 11b are provided.