JPS63190656A - Wheat milling apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a wheat flour milling device.

[Conventional technology]

In general, screening and tempering are performed as pre-treatments for milling wheat. That is, the wheat grains from which impurities have been carefully removed are temporarily stored in a storage silo, etc., and a predetermined amount of water is added to the grains to reduce the moisture content (usually 11 to 12%) to 15 to 17%, which is the optimum moisture content for grinding. After adding water, the wheat grains are left to stand (at room temperature) for 24 to 48 hours until the moisture is distributed throughout the wheat grains, which is what is called "resting". In this way, the wheat grain is tempered to bring it into a physical state suitable for milling.Specifically, the following steps are taken: 1. Separation of the wheat grain (hard skin containing defective ingredients) from the relatively soft endosperm. To do well.

As a result, it is possible to increase the efficiency of extracting the endosperm from the wheat bran and obtain a high yield without deteriorating quality, and because the powder is soft, power consumption is reduced.

■The base should be strong and not broken into pieces.

■The endosperm part softens and becomes easier to crush.

(2) When grinding several types of wheat with different hardnesses, the endosperm of each wheat can be ground at the same grinding pressure.

■ To facilitate sieving using a sieving machine.

■ The final product should have good moisture content.

There is a purpose.

The tempered wheat grains are then ground by a grinder,
It is not possible to completely remove the endosperm by passing (braking) through the crusher (roll) once, and it is usually necessary to pass through the crusher (roll) 5 to 7 times.

(Problem to be solved by the invention) This method performs sieve sorting after each braking, and further brakes the crushed material remaining on the sorting screen to extract powder from the endosperm (upward powder). The endosperm part is not completely divided into two parts, and the crushing effect of the rolls during each braking is slightly larger in the endosperm part than in the fumabu part, and the endosperm part is characterized by slightly thinner particles. The process involves sieving and recovering the endosperm, and as the differences in characteristics between the wheat and the remaining endosperm become closer to each other in the later stages of braking, the particles that are extracted as the endosperm contain identical particles. The contamination rate of the base of the size is high, and special skills are required to select the optimal dedicated roll for each braking and how to operate it.

The technical object of the present invention is to provide a wheat flour milling device with a high yield by more completely separating the wheat from the endosperm by applying refined wheat in the process before tempering and crushing.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention provides a wheat flour milling apparatus comprising a tempering step for moistening the inner deep layer of the wheat grains, and a grinding step for then pulverizing the wheat grains using a pulverizer. In the pre-shaping process, the skin of the wheat grains is peeled off using a grinding type milling machine consisting of a bran removal cylinder with a porous wall and a grinding polishing trochanter rotatably installed inside the bran removal cylinder. A wheat polishing process is established.

A water addition device is installed in the wheat grain milling process to add water to the wheat grains passing through the grinding type grain mill.

This technical measure was taken.

[For production]

With the above-mentioned technical means, the wheat grains supplied to the grinding type malting machine in the polishing process are moistened and softened by the addition of water from the moisture adding device, and the grain surface part is moistened and softened, and a grinding and polishing trochanter rotates at high speed to rotate the softened skin part. The peeled skin part leaks out from the porous wall of the rice bran removal cylinder along with the added moisture. The wheat grains from which the hard skin has been removed are re-hydrated in the tempering process, and after being evenly moistened and softened to the deep inner layers, they are sent to the crushing process, where they are subjected to a smooth crushing action by a crusher.

[Embodiments of the invention]

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

In FIG. 1, a wheat flour milling apparatus 1 includes a wheat polishing process 2, a tempering process 3 subsequent to the process, and a crushing process 4 subsequent to the process.

The wheat polishing process 2 consists of a plurality of grinding type wheat mills 115A to 5D, and each grinding type wheat milling machine 5A to 5D is provided with a grain lifting machine 6A to 6D for conveying the wheat grains. Figures 2 and 3 are grinding type wheat! 15A is a front view and a partially cutaway side sectional view of 15A, in which a bran removal and polishing cylinder 8 having a porous wall is shown in the upper part of the inside of the machine frame 7.
is installed horizontally, and inside the bran removal and polishing cylinder 8, a grinding and polishing trochanter 10 (for example, formed by firing and bonding abrasive grains) is rotatably attached to a partially hollow main shaft 9. A gap between the base 10 and the rice bran polishing tube 8 is formed at the polishing tip 11.

Further, on the main shaft 9, a spiral rotor 13 is attached to the supply port 12 side, and a grinding rotor 15 is attached to the discharge port 14 side. Drilled blowhole 1
7 is formed. The shaft attachment part of the grinding trochanter 15 of the main shaft 9 is made hollow, and a through hole 18 is provided in the peripheral wall thereof.
A blower 19 provided below the bran removal and polishing cylinder 8 and the hollow portion of the main shaft 9 are communicated through a ventilation pipe 20. Further, the supply port 12 has a shutter plate 22 that is opened and closed by an air cylinder 21, the discharge port 14 has a resistance plate 23 that biases it toward the polishing plate 11, and the end of the main shaft 9 has a shutter plate 22 that is not shown in the drawings. A pulley 25 that is interlocked and connected to the main motor by a V-belt 24
are attached to each. In addition, a wheat grain presence/absence detection sensor 26 is provided at the supply port 12, and this wheat grain presence/absence detection sensor 2
In some cases, the air cylinder 21 is actuated (contracted) in response to a signal from which the bar 6 detects the presence of wheat grains, and the shutter plate 22 is opened.

Below the rice bran removal cylinder 8 in the machine frame 7, there is a rice bran collecting hopper 27△.
, 27B are provided connected to the bran removal chamber 28, and the lower ends of the bran collecting hoppers 27A, 27B are connected to a duct 30 whose one end is connected to a suction fan 29.

Returning to FIG. 1 again, at the beginning of the wheat polishing process 2, a water addition device 31A is provided. That is, a transverse gutter 34 with an internal stirring spiral 33 is installed horizontally between the supply gutter 32 and the grain lifting machine 6A, and an ultrasonic nozzle 35 faces the transverse gutter 34 for water addition. The ultrasonic nozzle 35 is connected to a water tank 38 via a water pipe 37 .

A heater 39 may be attached to the water pipe 37 in some cases.

Each of the grinding type wheat mills 5B to 5D has a water addition device 31.
B is attached. That is, the ultrasonic nozzle 4 is installed at the open end of the hollow main shaft 9 (a closed part is provided near the boundary between the grinding and polishing trochanter 11 and the grinding trochanter 15) on the pulley 25 side.
The ultrasonic nozzle 40 is connected to a water tank 42 via a water pipe 41 and to an air pressurizer 44 via an air pipe 43. A blow ring groove 59 is appropriately formed in the ground and refined trochanter 10, and the blow ring groove 59 communicates with a number of through holes (not shown) bored in the main shaft 9.

In addition, a supply hopper 45 is provided above each supply port 12 of the grinding type refined wheat 15A to 5D, and each supply hopper 45 and the fried grains 16A to 6D are connected to the chute vibrators 46A to 46D.
Connected by 6D.

The refining process 3 consists of a refining tank 47 and a humid air generator 48,
Inside the tempering tank 47, there is a fan pipe 49 connected to a humid air generator 48.
A mountain-shaped picture air passage 50 with one end communicating with the wind exhaust pipe 5 with one end communicating with the
1 are disposed vertically in a staggered manner. In addition, a grain frying machine 53 is provided in the tempering tank 57.
It is equipped with a holder for loading and discharging wheat grains.

Do a cycle.

In the crushing process 4, a plurality of crushers 54 are arranged in series, and a sieving machine 55 is attached to the crushers 54. Each crusher 54 in the first half has serrated teeth on its surface. A pair of rolls 56 are built in. Further, a chute pipe 57 is connected from the tempering tank 47 to the No. 1 crusher 54, and an air conveying pipe 58 is connected in the crushing process 4, respectively.

Next, the operation of this embodiment will be explained.

Raw material wheat (sometimes classified according to size) from which foreign substances and impurities have been removed, such as wheat, is supplied into the horizontal feed gutter 34 of the water addition device 31A through the feed gutter 32, and the water addition section 3
At 6, water is added to the fine particles from the ultrasonic nozzle 35, and the particles are not stirred until they reach the supply section of the pumped Hm 6 A. At this time, water permeates only the epidermis of the wheat grains, causing them to become wet and softened. Note that when the heater 39 is turned on to produce hot and humid air, the epidermis will be softened more reliably in a short time even if the amount of moisture is reduced.

Wheat grains with only the skin part moistened and softened flow from the discharge part of the grain lifting machine 6A to the supply hopper 45 via the chute vibrator 46A. The cylinder 21 contracts and the shatter plate 22 opens.The wheat grains flowing down from the supply port 12 are fed into the milling chamber 11 by the spiral rotor 13, and are moistened and softened by the grinding milling rotor 10 rotating at high speed. The grain skin part is peeled off.The wheat grains in the milling chamber 11 are
The air taken in from the air intake part 60 formed in the wall flows in from the bottom of one side of the rice bran removal tube 8 and flows out near the bottom of the other side, thereby assisting the upward flow of the whitening chamber. The grains that tend to accumulate throughout the milling chamber 11 are made to flow uniformly throughout the milling chamber 11, and the grinding action of the grinding milling trochanter 10 is made more efficient.
Apply evenly.

After the skin of the wheat grain is peeled off by the grinding and whitening trochanter 10, the wheat grains are agitated by the protrusions 16 of the polishing trochanter 15, and the adhering bran on the surface of the wheat grain is removed by the blast air from the blast hole 17. Ru. The bran powder peeled off in this way is removed by the suction fan 29
The airflow generated by the air leaks from the rice bran polishing cylinder 8 to the rice bran removal chamber 28, passes from the rice bran collecting hoppers 27A and 27B to the duct 30, is separated from the air by a cyclone (not shown), and is collected in the rice bran room, etc. Ru.

Wheat grains discharged from the discharge port 14 of the grinding type wheat mill 15A are supplied to the supply hopper 45 of the grinding type wheat mill 5B via the grain lifting machine 6B and the chute pipe 46B. Then, the skin of the wheat grains is further peeled off in the whitening chamber 11 in the same way as in the case of the grinding type wheat 15A.
5D is equipped with a water addition device 31B, and the moist air jetted from the ultrasonic nozzle 40 flows out from the through hole provided in the main shaft 9 through the hollow part of the main shaft 9, and further flows into the grinding and whitening trochanter 10.
It blows out from the blow ring groove 59 into the whitening chamber 11, and the whitening chamber 11
Water is added to the surface of the wheat grain flowing through the wheat grain, and as soon as the surface layer becomes moist and softened, the surface layer is immediately peeled off by the grinding and whitening trochanter 10, so that water does not penetrate deep into the inner layer of the grain. The easily peeled skin part is removed from the machine as bran powder along with added moisture. Grinding type wheat 11158-5
D1. : Even if the heater 39 is used to generate hot and humid air, the time for moistening and softening the epidermis can be shortened.

In this way, the wheat grains that have passed through the grinding type malting machine 5D become polished wheat from which most of the outer skin has been removed.
7 is staked out.

Moist air or hot and humid air is supplied into the tempering tank 47 by a humid air generator 48, and moisture penetrates into the deep inner layer (endosperm) of the wheat grains in the tempering tank 47 (=tempering). The water is stored in the refining tank 47 until the end. At this time, the wheat grains in the tempering tank 47 are transferred to the grain frying machine 53.
By circulating the wheat grains, the water content in the wheat grains becomes equalized quickly.

Furthermore, in the case of tempering using hot and humid air, the tempering time can be shortened.

Polished barley whose endosperm has been softened by penetrating moisture into the deep layers of the endoplasm in tempering process 3 is fried grain 1fi53. The powder is supplied to the first pulverizer 54 in the pulverizing process 4 through the chute vibrator 57, where it is subjected to 1st preking, and then subjected to a sorting by the sieving machine 55, sequentially passed through 2nd and 3rd breaking, and then milled. will be held.

In the above embodiment, the wheat polishing process 2 was entirely constituted by the grinding type wheat mills 5A to 5D, but the final grinding type wheat machine 5
After D or in place of the grinding type barley mill 5D, a main shaft 62 is provided which is hollow inside a bran removing and polishing cylinder 61 having a porous wall.
The main shaft 6 is rotated freely (see Figure 4).
In some cases, a friction type wheat mill 65 formed by fixing a stirring rotor 63 and a spiral rotor 64 is disposed at 2. The friction type barley mill 65 has stirring protrusions 63a formed in the longitudinal direction of the stirring trochanter 63, and blowing grooves 6 along the stirring protrusions 63a.
6 is opened, and the gap between the stirring trochanter 63 and the bran removal polishing cylinder 61 is formed into a polishing chamber 76, and a number of through holes 67 are provided on the circumferential surface of the hollow main shaft 62, and the open end of the main shaft 62 is Department (
The other end (closed) faces the ultrasonic nozzle 40 of the water addition device 31B. Further, the supply section 68 includes a shutter plate 70 and a supply hopper 75 that operate in conjunction with the air cylinder 69, and the discharge section 71 includes an automatic resistance control device 72.
Resistance plates 73 connected to the rice bran are respectively installed, and a rice bran collecting hopper 74 is provided below the rice bran removing and polishing cylinder 61.

In this case, the wheat grains from which the epidermis has been almost removed by the grinding type refined wheat 15A, 5B, etc. are supplied to the supply hopper 75. It flows down through the supply section 68, is sent to the milling chamber 76 by the spiral trochanter 64, and is stirred by the stirring protrusion 63a in the relatively low-pressure milling chamber 76, where it receives moisture addition by moist air from the moisture addition device 31B. The grain-by-grain friction action completely wipes away the adhering bran and remaining bran on the surface of the wheat grains.

FIG. 5 shows another embodiment of the refining process 3, in which the pressurized tank 7
The supply section 78 of 7 is provided with a rotary valve 79 as an air cutoff valve, and the discharge section 80 is provided with a rotary valve 81 as an air cutoff valve to form the pressurized tank 77 airtight.
A pressurizing device consisting of a high-pressure turbo blower 82 is connected to the pressurizing tank 77, and a humid air generator 83 consisting of an ultrasonic vibration element and a temperature control heater 8 are connected to the high-pressure turbo blower 82.
4 is connected. Further, near the pressurized tank 77, a grain lifting machine 85 for supplying wheat grain into the pressurizing tank 77 and a grain lifting machine 86 for discharging are installed upright.

The effect in this case will be described below. The wheat grains fried by the grain fryer 185 are charged into the pressurized tank 77 by the action of seven rotary valves. Pressurized tank 77
Inside, moist or warm air is distributed throughout the wheat grains.

By further applying pressure, the water in the ultrafine grains rapidly penetrates into the inner part of the wheat grain (at a rate higher than the natural water absorption rate) and uniformly moistens the grain. In this case, since the tempering is completed in a short time, the flow of the wheat grains does not stop during the tempering process, and the tempering device can be downsized.

〔Effect of the invention〕

As described above, the present invention provides a wheat polishing process consisting of a grinding type wheat mill in the preprocess of the tempering process, and also includes a moisture addition device, so that the hard skin of the wheat grains is softened by adding water from the moisture addition device. Immediately after, it is peeled off using a grinding and whitening trochanter, and the endosperm, which is softer than the epidermis, is exposed and tempered without being divided.The endosperm that has been softened by tempering is then crushed in the crushing process, resulting in a high yield. You will get quality products.

[Brief explanation of the drawing]

Fig. 1 is a front view of an embodiment of the present invention, Fig. 2 is a partially enlarged front view of Fig. 1, Fig. 3 is a partially cutaway side view of Fig. 2, and Fig. 4 is an example of another embodiment. FIG. 5 is a partially enlarged front view showing still another embodiment. 1... Wheat flour milling device, 2... Wheat milling process, 3... Tempering process, 4... Grinding process, 5A to 5D... Grinding type barley mill, 6A to 6D... Fried grain Machine, 7... Machine frame, 8...
・Blank removal polishing tube, 9... Main shaft, 10... Grinding polishing trochanter, 11... Refining chamber, 12... Supply port, 13... Spiral trochanter, 14... Discharge port, 15... Kenmugi Troshi, 16
...Protrusion, 17...Blowhole, 18...Through hole, 19
...Blower, 20...Ventilating pipe, 21...Air cylinder, 22...Shutter plate, 23...Resistance plate, 24...V belt, 25...Pulley, 26...
・Wheat grain presence detection sensor, 27.27A, 27B...
Bran collection hopper, 28... Bran removing room, 29... Air suction fan, 30... Duct, 31A, 31B... Moisture addition device, 32... Supply gutter, 33... Stirring spiral, 34・
... Cross feed gutter, 35 ... Ultrasonic nozzle, 36 ... Moisture addition section, 37 ... Water pipe, 38 ... Water tank, 39
...Heater, 40...Ultrasonic nozzle, 41...
Water pipe, 42... Water tank, 43... Air pipe, 4
4... Air pressurizer, 45... Supply hopper, 46A
~46D... Chute pipe, 47... Temperature tank, 4
8... Moist air generator, 49... Air supply pipe, 50... Mountain-shaped air supply path, 51... Wind exhaust pipe, 52... Mountain-shaped air supply path, 53... Lifting Grain machine, 54...Crusher, 55...
Sieving machine, 56... Roll, 57... Chute pipe, 58... Air conveyance pipe, 59... Blower ring groove,
60... Air intake part, 61... Bran removal polishing cylinder, 62...
...Main shaft, 63... Stirring trochanter, 64... Spiral trochanter,
65... Friction type barley mill, 66... Spout fli I groove, 6
7... Through hole, 68... Supply section, 69... Air cylinder, 70... Shutter plate, 71... Discharge section, 72... Automatic resistance control device, 73... Resistance plate ,7
4... Bran hopper, 75... Supply hopper, 76
... Refining room, 77... Pressurized tank, 78... Supply section, 79... Rotary valve, 80... Discharge section,
81... Rotary valve, 82... High pressure turbo blower, 83... Humid air generator, 84... Temperature control heater, 85.86... Grain frying machine.

Claims (4)

[Claims] (1) In a wheat flour milling apparatus comprising a tempering step for moistening the inner deep layer of wheat grains, and a crushing step for pulverizing the wheat grains using a pulverizer, the step before the tempering step includes a porous wall. A polishing process is provided in which the skin of the wheat grains is peeled off using a grinding type wheat mill consisting of a bran removal cylinder having a 100mm diameter bran removal cylinder, and a grinding polishing trochanter rotatably installed inside the rice bran removal cylinder. A wheat flour milling apparatus, characterized in that a water addition device is provided to add water to the wheat grains passing through the grinding type wheat milling machine. (2) The wheat flour milling apparatus according to claim (1), wherein the wheat milling process comprises a plurality of grinding type wheat mills connected in series. (3) The refining step is provided with a pressurizing device for moistening the wheat grains at a pressure higher than atmospheric pressure. wheat flour milling equipment. (4) In the final step of the above-mentioned wheat polishing process, a friction-type barley milling machine consisting of a rice bran removal cylinder having a porous wall and a stirring trochanter rotatably installed inside the rice bran removal cylinder is installed. A wheat flour milling apparatus according to any one of claims (1) to (3).