JP3498494B2 - Milling pretreatment method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a milling method of milling raw wheat and then crushing it, and more particularly to a milling pretreatment method of washing milled white wheat after milling with acidic water.

[0002]

BACKGROUND OF THE INVENTION Raw wheat is refined into refined white wheat, and this refined wheat is washed and adhered (skin peeled from the raw wheat).
The present applicant has already applied for a milling method in which the powder is removed and then ground (Japanese Patent Application No. 8-140635). In this milling method, the purified white wheat is washed with hot water of 75 to 80 ° C. for the purpose of sterilizing the purified white wheat and the waste water after the cleaning, and the waste water after the cleaning is supplied to a separation tank and contains fusible rice. It is separated into precipitation water and supernatant water that does not contain wheat, and the precipitation water is used for watering just before the barley and the supernatant water is 75-80.
After being heated to ℃, it is reused as washing water for polished wheat.

However, in the above-mentioned milling method, since warm water is used as the washing water for the refined barley, the refined barley and the waste water can be sterilized, but the settling water and the supernatant water are separated in the separation tank. Since it takes a long time, the separation layer must be a large-scale device capable of storing a large amount of water for a long time, and the increase in the size of the separation tank is one of the causes of the increase in the size of the milling pretreatment equipment.

[0004]

SUMMARY OF THE INVENTION In view of the above problems, the present invention separates the waste water after washing of pearled wheat into the supernatant water and the precipitation water in a short time to downsize the separation tank and to carry out a milling pretreatment facility. It is a technical object to provide a milling pretreatment method capable of downsizing the product.

[0005]

In order to solve the above problems SUMMARY OF THE INVENTION, milling pretreatment method of the present invention, the raw material wheat and pearling the polished wheat, before milling to a grinding after washing The purified Shiromugi processing method In, the washing of the above-mentioned milled barley was discharged by the washing.
The wastewater to be separated is separated into supernatant water and precipitation water, and
The technical means was taken to carry out with acidic ionized water obtained by electrolyzing the supernatant water .

[0006] The aluminum obtained by the above electrolysis
Use the potassium ion water as the acidity adjusting water for the above acidic ion water.
It is effective to use .

In addition, the above-mentioned precipitation water is added to the above-mentioned raw material wheat.
Can also be used as

[0008]

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS.
This will be described with reference to FIG. FIG. 1 is a flow chart showing the pre-milling process, in which the raw wheat extracted from the raw material tank or the like and supplied to the refinement apparatus 1 has a coarse selector for removing foreign matters and a stone removing machine for removing pebbles and metals. After being removed and subjected to a selective treatment, it is sent to the watering apparatus 2. In the water adding device 2, 0.5 to 2.0% of water is added to the weight of the wheat grains, and the water is conditioned for 3 to 5 minutes so that the water penetrates into the surface layer of the wheat grains. Then, the grain of which the conditioning has been completed is conveyed to the barley apparatus 3, and after the skin portion (pericarp, seed coat and a part of the aleurone layer) is removed to obtain refined barley, it is conveyed to the barley washing apparatus 4. The malt washing device 4 will be described with reference to FIG.

The malt washing device 4 is provided with a supply gutter 5 having a rotary valve 32 for supplying refined white wheat fixed at one end, and a discharge gutter 6 having a rotary valve 33 for discharging washed white barley fixed at the other end. Inside the cylindrical machine frame 7, a pair of bearings 8,
An inner cylinder 10 partially formed of a perforated wall 11 is rotatably provided laterally via a space 9, and a space surrounded by the perforated wall 11 is used as a dehydrating section 12, and a space between the perforated wall 11 and the machine frame 7 is provided. It is formed in the drainage chamber 14 provided with the suction device 13. Then, the space between the dehydrating unit 12 and the supply gutter 5 is formed in the cleaning unit 15, and the space between the dehydrating unit 12 and the discharge gutter 6 is formed in the transfer unit 16. The drainage chamber 14 is connected to a separation tank 34 and an electrolyzed water generator 35, which will be described later,
The wastewater from the dehydration unit 12 is treated by the separation tank 34 and the electrolyzed water generating device 35.

Further, a main shaft 18 having a hollow and forwardly-conveying carrier blade 17 is provided laterally over the entire length of the machine frame 7. That is, the bearings 1 at both ends of the machine frame 7
The main shaft 18 is rotatably supported by 9, 20 and a passive pulley 21 is axially mounted on the discharge gutter 6 side of the main shaft 18, while the inner cylinder 10
The passive pulley 22 is formed on the outer peripheral wall of the motor, and the passive pulleys 21 and 22 and a pair of motor pulleys 24 and 25 axially attached to both shaft ends of the motor 23 are interlocked and connected by a V belt. The main shaft 18 is configured to rotate at a higher speed than the inner cylinder 10. For example, the rotational speed of the main shaft 18 is 1050 to 1650r.
pm, and the rotation speed of the inner cylinder 10 is 900 to 1450 rpm.

The main shaft 18 of the cleaning unit 15 is provided with a plurality of water supply ports 27 which communicate with the inner cavity 26 of the main shaft 18, and the end part on the side of the supply gutter 5 is provided with the water supply which communicates with the electrolyzed water generating device 35. A pipe 28 is connected to the main shaft 18 of the dewatering unit 12, and a plurality of blowout ports 29 communicating with the inner cavity 26 are bored, and an end of the main shaft 18 on the discharge gutter 6 side is opened to form an intake port 30. To do. Further, in the inner cavity 26 of the main shaft 18, the cleaning section 15
The blocking member 31 that can move between the
Water supply port 27 through which cleaning water is discharged by moving the
Adjust the range of.

The separation tank 34 is a device for separating the waste water from the dehydration section 12 of the malt washing device 4 into settling water and supernatant water,
This will be described with reference to FIG.

The separation tank 34 includes a plurality of separation chambers 36A to 36A.
D is formed continuously, and each separation chamber 36 is provided with communication pipes 37A to 37D formed so as to take in drainage from the upper part of the separation chamber 36 and discharge it to the lower part,
In the vicinity of the discharge end of each communication pipe 37, drainage is separated into the separation chamber 36.
Restriction plates 38A to 38D for circulating upward are provided. Further, discharge ports 39A to 39D for discharging the precipitated water are provided at the bottom of each separation chamber 36, and a connection pipe 40 for supplying the supernatant water to the electrolyzed water producing device 35 is provided in the separation chamber 36D.

The electrolyzed water generator 34 has a plurality of treatment tanks 41A to 41D connected in series, and an electrolysis diaphragm 42 is provided between the treatment tanks 41B and 41C. The treatment tank 41C is provided with a supply pipe 43 and a negative electrode 44 communicating with the connection pipe of the separation tank 34, and the treatment tank 41B is provided with a water supply pipe 45 and a positive electrode 46. Further, between the processing tank 41A and the processing tank 41B,
A pump 47 and a communication pipe 48 for circulating the acidic water in each of the tanks 41A and 41B are provided, and
Between the C and the processing tank 41D, the respective tanks 41C, 4C
Pump 4 for circulating water (alkaline water) in 1D
9 and the communication pipe 50 are provided. And the processing tank 4
A temperature control device 51 for controlling the temperature of the generated acidic water and supplying it to the water supply pipe 28 of the malt washing device 4 is connected to 1A, and the treatment tank 41D is a wastewater for discharging alkaline water to the outside of the machine. Connect the tube 52. The temperature control device 51 is a temperature sufficient to denature the protein and gelatinize the starch,
For example, a device that heats acidic water to 75 to 80 ° C.

The milled barley transported from the barley unit 3 to the barley unit 4 is supplied to the cleaning unit 15 by the rotary valve 32. In the cleaning unit 15, from the treatment tank 41A of the electrolyzed water generator 35, the acidic water heated to 75 to 80 ° C. with respect to the weight of the refined wheat is heated via the temperature controller 51, the water supply pipe 28, and the water supply port 27. 3-100% supply. Then, the milled barley is sterilized and the fumes adhering to the surface are washed away while being mixed and stirred with acidic water, and water is absorbed from the surface of the milled barley and transferred to the dehydration unit 12 in about 2 to 4 seconds. . At this time, since the transport blade 17 is formed in the forward lead,
The refined wheat is rapidly transferred at a low pressure without being subjected to excessive polishing and does not cause excessive refined or crushed wheat.

In the dehydrating section 12, the white wheat is dehydrated by the centrifugal force (250 to 300 G) generated by the rotation of the inner cylinder 10 and the suction force of the suction device 13, and the acidic water containing the fumes is filtered by the porous wall 11. After being discharged to the drainage chamber 14 through the sheet, it is conveyed to the separation tank 34. At this time, the supply gutter 5 and the discharge gutter 6
Since the rotary valves 32 and 33 are fixed to the inside of the machine frame 7 and the inside of the machine frame 7 is formed in a substantially sealed state, the air is sucked from the intake port 30 to the inner cavity 26 by the suction of the suction device 13, and this air is blown out by the blowout port. After being blown from 29 to pass between the refined wheat of the dehydration section 12, it is discharged together with the drainage from the porous wall 11.

The drainage supplied from the barley washing device 4 to the bottom of the separation chamber 36A of the separation tank 34 through the communication pipe 37A flows upward by the regulating plate 38A. At this time, since the protein and starch of the wheat flour are contained in the wastewater, the protein is aggregated by the acid and temperature of the acidic water, and the starch is aggregated by the temperature of the acidic water, resulting in the precipitation water and the supernatant water. The separation with Then, the precipitation water containing the fumes settles to the bottom of the separation chamber 36A and is discharged from the discharge port 39A, and the supernatant water is supplied to the separation chamber 36B from the communication pipe 37B. Then, the separation chamber 36B-
In 36D, the settling water and the supernatant water are separated, and the supernatant water obtained in the separation tank 36D becomes the purified supernatant water that does not contain any fumes, and is supplied from the connection pipe 40 to the supply pipe 43.
Is supplied to the treatment tank 41C of the electrolyzed water producing apparatus 35 via.

The settling water discharged from the discharge ports 39A to 39D is supplied to the watering device 2 and used as added water for the raw wheat. Further, the time required to separate the waste water into the precipitation water and the supernatant water is 1 to 2 hours when normal water is used as the washing water, while it is approximately 15 hours when the heated acidic water is used. Minutes.

The supernatant water supplied to the processing tank 41C is ion-exchanged with the water circulating between the processing tanks 41A and 41B while circulating between the processing tanks 41C and 41D. It becomes water, and similarly, the water in the processing tanks 41A and 41B becomes acidic water. Then, the acidic water is supplied from the processing tank 41A to the temperature control device 5
After being supplied as washing water to the malt washing device 4 via 1, and the alkaline water is discharged from the drain pipe 52, a part of the alkaline water is used as acidity adjusting water for the washing water.

The refined white wheat from which the acidic water has been removed in the dehydration section 12 quickly moves through the transfer section 16 and is discharged to the outside of the machine through the discharge trough 6 and the rotary valve 33.

The refined white wheat discharged from the malt washing device 4 is supplied to the loosening device 53. The disentangling device 53 stirs the refined white wheat in a sticky state by the action of gluten and starch while applying vibration to prevent the refined white wheat from becoming a lump and to absorb the moisture on the surface of the refined white wheat into the inside. It is a device for producing polished wheat whose surface is dry, and the polished wheat is discharged to the outside after being vibrated and stirred for at least 2 minutes.

The refined white wheat discharged from the loosening device 53 is put in a tempering tank 54. In the tempering tank 54, a plurality of bag bodies that can be inflated or deflated by the inflow and outflow of air are provided inside, or a vibration device is attached,
Conditioning is performed while preventing the lumps of the refined white wheat by continuously expanding and contracting the bag to make the refined white wheat fluid, or by applying vibration to the refined white wheat.

The refined white wheat, which has been subjected to tempering in the tempering tank 54, is supplied to the brake roll machine of the crushing device 55, and is sequentially and stepwise broken by various brake roll machines to obtain endosperm as coarse grains. The parts are taken out, classified by a shifter, further refined and purified by a purifier, crushed by a smooth roll machine, and classified by a shifter. Be recovered.

In the above-mentioned malt washing device 4, it is possible to adjust the powder quality, especially the ash content and the water content. When adjusting the ash content, the amount of washing water and the blocking member 31 are adjusted.
Of the cleaning range and the centrifugal force by changing the number of rotations of the inner cylinder 10 are performed.

In the case of adjusting the water content, the amount of washing water is adjusted, the centrifugal force is adjusted by changing the rotation speed of the inner cylinder 10, and the cleaning time of milled wheat is adjusted by changing the rotation speed of the main shaft 18.

Further, a part of the alkaline water discharged from the processing device 41D may be supplied to the water adding device 2 and used as added water to the raw wheat.

[0028]

INDUSTRIAL APPLICABILITY According to the present invention, cleaning of refined barley is performed by
To separate the waste water discharged into the precipitation water and supernatant water by Kiyoshi
Rutotomoni, acidic Lee obtained by electrolysis of the supernatant water
By performing with on- water, the white wheat is sterilized, and when the wastewater discharged by washing the white wheat is separated into settling water and supernatant water, the proteins contained in the wastewater are aggregated by the acidic water. Since the sedimentation water and the supernatant water can be quickly separated, the separation tank for treating the wastewater can be downsized, and thus the milling pretreatment facility can be downsized . In addition, add acidic ionized water to the supernatant
Since it is obtained by electrolyzing water, it is easy to obtain acidic ionized water.
And drainage can be used effectively .

[0029]

By using the alkaline ionized water obtained by electrolysis as the acidity adjusting water for the acidic ionized water, the alkaline ionized water can be effectively used and the acidity of the washing water can be adjusted appropriately. it can.

By using the settling water as the added water of the raw wheat, the settling water can be effectively used and the waste water treatment device for the settling water is not required, so that the milling pretreatment facility can be enlarged. Absent.

[Brief description of drawings]

FIG. 1 is a flowchart of a pre-milling process.

FIG. 2 is a vertical cross-sectional view of a wheat washing device.

FIG. 3 is a vertical cross-sectional view of a separation layer.

FIG. 4 is a schematic vertical sectional view of an electrolyzed water generator.

[Explanation of symbols]

1 Selector 2 watering equipment 3 barley equipment 4 Wheat washing equipment 5 supply gutter 6 discharge gutter 7 machine frames 8 bearings 9 bearings 10 inner cylinder 11 Perforated wall 12 Dehydration department 13 Suction device 14 Drainage chamber 15 Cleaning section 16 Transfer section 17 Conveyor wings 18 spindle 19 bearings 20 bearings 21 Passive pulley 22 Passive pulley 23 motor 24 motor pulley 25 motor pulley 26 Lumen 27 Water supply port 28 Water pipe 29 Vent 30 air intake 31 Blocking member 32 rotary valve 33 Rotary valve 34 Separation tank 35 Electrolyzed water generator 36 Separation room 37 Communication pipe 38 Regulation plate 39 outlet 40 connection pipe 41 Processing tank 42 Diaphragm for electrolysis 43 Supply pipe 44 negative electrode 45 supply pipe 46 Positive electrode 47 pumps 48 communication pipes 49 pumps 50 communication pipes 51 Temperature controller 52 Drain pipe 53 Disentangling device 54 Tempering tank 55 Grinding device

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Ken Sosada 2-30 Saijo Nishihonmachi, Higashihiroshima City, Hiroshima Prefecture Satake Manufacturing Co., Ltd. (72) Inventor Shikadera 2 Saijo Nishihonmachi, Higashihiroshima City, Hiroshima Prefecture No. 30 Incorporated company Satake Manufacturing (72) Inventor Tomotaka Nakagawa No. 2-30 Saijo Nishihonmachi, Higashi-Hiroshima City, Hiroshima Prefecture (30) Incorporated company Satake Manufacturing (56) Reference JP-A-8-187439 (JP, A) Special Kaihei 8-154817 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B02B 1/00-3/14

Claims (3)

(57) [Claims] 1. A milling pretreatment method in which raw wheat is refined into refined wheat, and the refined wheat is washed and then ground. In the washing of the refined wheat, drainage discharged by the washing is precipitated with supernatant water. A method for pretreatment for milling, characterized in that it is separated into water and is carried out with acidic ionized water obtained by electrolyzing the supernatant water. 2. The milling pretreatment method according to claim 1, wherein the alkaline ionized water obtained by the electrolysis is used as the acidity adjusting water for the acidic ionized water. 3. The milling pretreatment method according to claim 1, wherein the precipitation water is used as added water to the raw wheat.