JPH10216542A - Vertical apparatus for removing grain bran - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove bran parts without lowering a yield considerably, improve the recycling property of water flowing out together with the removed bran parts, and prevent the bran parts stripped off from grain surfaces from again sticking to the grain surfaces. SOLUTION: This vertical grain bran-removing apparatus comprises a frame having a grain-feeding port for feeding cleaned grain on an upper part and a grain-discharging port on a lower part, an agitating element provided rotatably within the frame and having agitating blades for agitating the grain, and a water-feeding port for supplying the grain with water. An agitation-friction chamber 14 is formed in the upper part of the agitating element surrounded with pore-tree walls and an agitation-washing chamber 19 is formed in the lower part of the agitating element surrounded with porous walls 18. A first water-ejecting port 13 is provided on the upper end part of the agitation-friction chamber 14 and a second water-ejecting port 21 is provided on the upper end part of the agitation-washing chamber 19. A pressure within the agitation-friction chamber 14 is set to be a pressure under which the grain surface parts are slightly peeled off by friction between particles of individual grain and a pressure within the agitation-washing chamber 19 is set to be a pressure less than that within the agitation-friction chamber 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical grain remover for removing bran attached to grains, especially milled grains (for example, white rice, milled wheat, etc.) whose hulls have been removed by a milling device. It relates to a bran device.

[0002]

2. Description of the Related Art Conventionally, an apparatus for adding impurities such as bran attached to the surface of grain by adding water and stirring to the milled grain is disclosed in Japanese Patent Publication No. Sho 60-4 by the present applicant.
There is a vertical humidifying rice mill 58 disclosed in Japanese Patent No. 4017, and this device passes through a mist (water) from a spraying device 52 to a white rice supplied from a rice supply port 50 into a whitening chamber 51.
And spraying through the blast slot 54 and the milling trochanter 5
It is described that by stirring the mixture with No. 5, the bran attached to the surface of the white rice is peeled off by a frictional action and discharged together with water from the perforated wall polishing cylinder 56 to obtain a glossy and clean white rice. .

[0003] However, in the above-mentioned apparatus, although the grain temperature of the supplied white rice is raised by the rice milling operation (about 40 ° C), the white rice supplied from the rice supply port 50 into the whitening chamber 51 is not removed. Until the rice is discharged from the rice discharging port 57 to the outside of the apparatus, the rice is always subjected to a frictional action at a relatively high pressure by the milling trochanter 55, so that the grain temperature does not decrease. The quality of white rice rapidly deteriorates and the yield decreases, and the water added to the white rice (0.1 to 2% of the weight of white rice) is kneaded with the bran in the milling chamber 51 and the outside of the apparatus. However, there is a problem that it is difficult to reuse this water because of poor flowability due to the outflow.

[0004] The whole of the refining chamber 51 is a perforated wall refining cylinder 56.
The fog (water) sprayed on the white rice from the blast slot 54 can sufficiently improve the frictional action even if the amount is small, but immediately upon contact with the white rice. It flows out of the porous wall polishing cylinder 56 together with the bran,
There was a problem that water was not used effectively.

Further, the bran removed by contact with the perforated wall polishing cylinder 56 is immediately removed from the perforated wall polishing cylinder 56, whereas the bran is peeled off by contact with the polishing trochanter 55 or by grain friction. It takes time to discharge the extracted bran from the porous wall polishing cylinder 56, and during this time, soluble substances eluted from the bran by the added water, such as soluble proteins and soluble starch, adhere to the white rice, thereby deteriorating the taste. There was a problem of doing.

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention can effectively use a small amount of water to improve the frictional action between grains, and can improve the milled grain without a large decrease in yield. Can completely remove the bran and the soluble substances from the bran, which do not reduce the quality and taste of the bran-removed grains, and reuse the water flowing out together with the removed bran It is an object of the present invention to provide a vertical grain removing device capable of removing cereals.

[0007]

Means for Solving the Problems To solve the above problems, a vertical grain bran removing device of the present invention comprises: a machine frame having a grain feed port at the top and a grain discharge port at the bottom; In a vertical grain bran removing apparatus provided with a stirring rotator which is rotatably installed in the machine frame and has stirring blades for stirring grains, and a fountain port for adding water to the grains, An upper part of the trochanter is surrounded by a non-porous wall to form a stirring friction chamber, while a lower part of the trochanter is surrounded by a porous wall to form a stirring washing chamber, and a first part is provided at an upper end of the stirring friction chamber. A fountain port is provided, and a second fountain port is provided at the upper end of the stirring and washing chamber. , The pressure of the stirring and cleaning chamber,
Technical measures were taken to make the pressure lower than the pressure of the stirring friction chamber.

[0008] The total amount of water supplied from the first fountain and the second fountain is set to 2 to 5% with respect to the grain weight, and the amount of water supplied from the second fountain is changed to the first fountain. It should be larger than the amount of water supplied from the mouth.

In addition, the diameter of the stirring trochanter in the stirring washing chamber is
The diameter of the stirring trochanter in the stirring friction chamber may be larger than that of the stirring trochanter.

Furthermore, it is more effective to connect a suction device for sucking outflow from the perforated wall to the stirring and washing chamber.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a longitudinal sectional view of a vertical grain cleaning device 1, in which reference numeral 2 denotes a support frame in which bearings 3 and 4 are provided.
Vertically and rotatably provided by upper and lower bearings 3 and 4 in a support frame 2, a pulley 6 is provided on an upper portion of the main shaft 5,
By connecting the pulley 6 and a pulley of a motor (not shown) with a V-belt, the main shaft 5 can be rotated at an appropriate speed (about 900
１０００1000 rpm). In the lumen 28, a water supply pipe 16 for supplying water for increasing the frictional effect by adding to the grain and a water supply pipe 23 for supplying water for washing out the bran attached to the grain are provided. Each is inserted.

At the lower end of the support frame 2, a machine frame 9 having a milled grain feed port 7 at the upper part and a washed grain discharge port 8 at the lower part is fixed. At a substantially central portion, a lower portion of the main shaft 5 is vertically provided in a state protruding downward from the support frame 2, and a grain from the grain feeding port 7 is provided at an upper portion of the main shaft 5 in the machine frame 9. A helical rotator 10 for conveying downward is axially mounted.

A plurality of stirring blades 1 are provided below the spiral rotator 10.
The space surrounded by the stirring trochanter 12 and the machine frame 9 which is a non-porous wall is formed in the stirring friction chamber 14. At the upper end of the stirring trochanter 12, a plurality of first fountain ports 13 for adding water to grains flowing into the stirring friction chamber 14 are provided.
Is connected to a first water supply port 15 provided in the main shaft 5, and water from a water supply pipe 16 is added to the kernel via the first water supply port 15 and the first fountain port 13.

A stirring rotator 17 having a diameter larger than that of the stirring rotator 12 of the stirring friction chamber 14 is axially mounted below the stirring friction chamber 14 through a connecting member 32 formed to be divergent. The trochanter 17 is surrounded by a porous wall 18,
The space surrounded by the stirring trochanter 17 and the porous wall 18 is formed in a stirring and washing chamber 19. Further, a plurality of stirring blades 20 for stirring the grains are fixed to the peripheral surface of the stirring trochanter 17, and a second fountain port 2 for adding water to the grains is provided at the upper end.
1 is provided in plurality. The second fountain port 21 communicates with a second water supply port 22 provided in the main shaft 5, and a water supply pipe 23.
Is added to the kernel via the second water supply port 22 and the second fountain port 21. Further, a space surrounded by the machine frame 9 and the porous wall 18 is formed in the bran removing chamber 24, and the bran removing chamber 24 is provided in the duct 2
5 and connected to the suction device 26 (see FIG. 3).

The stirring friction chamber 14 has, for example, an agitating blade 11 formed in an inverted reed so that the bran is peeled off by grain friction between the grains. The stirring trowel 17 has a larger diameter than the stirring trowel 12 of the stirring friction chamber 14 so that the grains are spread in a coarse state so that water is uniformly supplied to all the grains and washing is performed. For example, the stirring blade 20 is provided so as to be in a forward lead or in the same direction as the axial direction of the main shaft 5 so that the pressure is low enough not to cause a frictional action. In the stirring friction chamber 14, a small amount of water is supplied from the first fountain port 13 so that the frictional action is promoted, and in the stirring washing chamber 19, the bran attached to the grains is washed away. A large amount of water is supplied from the second fountain port 21 as compared with the first fountain port 13, and the total amount of water in the first and second water inlets 13 and 21 is 2 to 2 with respect to the weight of the milled grain. It is controlled to be 5%.

In FIG. 2, reference numeral 27 denotes a partition wall fixedly provided in a lumen 28 at a lower end of the first water supply port 15 so as to discharge all the water from the water supply pipe 16 from the first water supply port 15. It is.

In FIG. 3, reference numeral 29 denotes a water addition tank for adding water to the raw material grains for conditioning before grinding.
Reference numeral 0 denotes a water addition nozzle, and reference numeral 31 denotes a milling device. Raw material grains (brown rice, raw wheat, etc.) supplied into the water supply tank 29.
Is refined by adding 1 to 3% of the weight of the grain weight from the moisture addition nozzle 30 and receives 0.5 to 1% of the moisture of the grain weight 3 to 5 minutes before grinding. Thereafter, it is supplied to the milling device 31. In the milling device 31, the outer skin softened by the water is removed by the milling action, and the milled grains are supplied to the vertical grain removing device 1.

Hereinafter, the specific operation of the vertical grain removing device 1 will be described.

The milled grains which have been introduced into the grain feed port 7 of the vertical grain bran removing device 1 are stirred by a spiral trochanter 10 into a stirring friction chamber 1.
4 is supplied. The grain supplied to the stirring friction chamber 14 is added with water from the first fountain port 13 and the stirring blade 11
However, since the stirring blades 11 are formed in the reverse reed, the grain is prevented from being transported downward, so that the grain becomes dense, and the bran adheres to the grain due to the friction between the grains. The parts are effectively stripped. Further, since the stirring friction chamber 14 is surrounded by the stirring trochanter 12 and the machine frame 9 which is a non-porous wall, the added water and the separated bran do not flow out of the apparatus without flowing into the flow path 32. Flow down to The amount of water added to the stirring friction chamber 14 may be small enough to promote the frictional action between grains, and the added water does not flow out of the apparatus. 0.2-0.5% is added to the grain, part of which penetrates into the grain, and the other part is absorbed by bran.

The grains and the bran separated from the grains change from a dense state to a coarse state as they flow down from the stirring friction chamber 14 through the connecting member 32 formed to be divergent.
The stirring trochanter 17 having a larger diameter than the stirring trochanter 12 of No. 4
And flows into the agitation washing chamber 19 provided with.

In the agitation washing chamber 19, water from the water supply pipe 23 is supplied to the agitation friction chamber 14 via the second water supply port 22 and the second fountain port 21 with respect to the grains and bran that flow in at a wide spread.
It is supplied in a larger amount. When the grains are stirred with water without being subjected to frictional action, the bran and the soluble substances (soluble proteins and soluble starch, etc.) eluted from the bran and adhered to the grain surface are washed away. Cooled at the same time. Then, under the centrifugal action due to the rotation of the stirring trochanter 17 and the suction action of the suction device 26, the water containing the bran and the soluble substance is immediately collected from the porous wall 18 to the suction device 26 via the bran removing chamber 24. The bran is removed from the grain discharge port 8. Note that the grain temperature of the bran-removed grains is at least 5 ° C. lower than the grain temperature at the time of being introduced into the bran-removing apparatus 1, and this cooling can delay the deterioration rate of the grain quality.

The water collected by the suction device 26 is water simply washed out of the bran in the agitation and washing chamber 19, and although having bran, it is not kneaded into the bran and has good fluidity. Although 2 to 5% of water is supplied from the fountain 13 and the fountain 21 based on the weight of the milled grain, about half of the water is absorbed in the grain and the water collected by the suction device 26 is milled. Since the total water content is about 1 to 2.5% with respect to the grain weight, the total recovered water is added to the water addition tank 29 (1 to 3% of the weight of the grain before milling) and used for water just before milling. It can be used as added water (0.5-1% of the weight of the grain), and the bran contained in the recovered water can be treated together with the bran removed from the raw grain by the milling device 31. . Further, since the temperature of the recovered water is increased by cooling the grains, the temperature of the raw material grains is controlled (10 to 35 ° C., preferably 15 to 2 ° C.) by using the recovered water.
5 ° C.) can be easily performed, and the refining time of the raw material grains can be shortened.

In addition, in the subsequent step of the vertical grain bran removing device 1, a water adding means is provided, and a conveying device for vibrating and conveying the grains while stirring is provided. When a moisture measuring device for measuring the moisture of the grain or the moisture of the pulverized product obtained from the grain is provided, the bran-removed grains from the vertical grain bran removing device 1 pass through the transport device. If the water adhering to the surface intersperses well inside the grains, the grains do not stick to each other, and if the measured value of the moisture measuring device is not the target value, the water is added to the transport device. By adding water from the means, it is possible to reliably adjust the grain water.

[0024]

According to the present invention, a machine frame having a grain feed port at the upper end and a grain outlet at the lower end, and rotatably provided in the machine frame,
In a vertical grain washing device having a stirring rotator having stirring blades for stirring grains and a fountain port for adding water to the grains, the upper portion of the stirring rotator is surrounded by a non-porous wall and stirring friction is caused. While the lower part of the stirring roller is surrounded by a porous wall to form a stirring washing chamber, a first fountain port is provided at the upper end of the stirring friction chamber, and a second fountain is provided at the upper end of the stirring washing chamber. Make a mouth,
Further, the pressure in the stirring friction chamber is set to a pressure at which the surface layer of the grain is slightly peeled off due to the grain friction between the grains, and the pressure in the stirring and washing chamber is set to be smaller than the pressure in the stirring friction chamber. In the room, since the water supplied to the grains does not flow out of the apparatus, the frictional action between the grains is improved with a small amount, and the surface layer of the grains is slightly peeled off to remove the bran. In the agitated washing room, the grains are cooled by the supplied water and the bran and soluble substances (soluble protein and soluble starch) are washed away without causing any friction between the grains. Since it flows out of the porous wall, the quality of the bran-removed grains is not reduced, and the bran can be peeled off and removed from the grains without a large decrease in yield. Perforated wall? Water flowing out, in order to flow out from the porous wall immediately with bran fraction in contact with the grains, can fluidity not kneaded with bran content may be easily reused.

The total amount of water supplied from the first fountain and the second fountain is set to 2 to 5% of the grain weight, and the amount of water supplied from the second fountain is changed from the amount supplied from the first fountain. By making the amount larger than the amount, the bran can be washed out of the grain with a large amount of water in the stirring and washing room, and the amount of water flowing out from the porous wall becomes 1 to 2.5% based on the weight of the grain. The whole amount is used as water added to the grain before milling (1-3% of the weight of the grain before milling) and water added immediately before milling (0.5-1% of the weight of the grain). be able to.

Since the diameter of the stirring rotator in the stirring and washing chamber is formed larger than the diameter of the stirring rotator in the stirring and friction chamber, the grains in the stirring and washing chamber are in a coarser state than the grains in the stirring and friction chamber. , The water can be supplied uniformly to the whole grain, and the bran can be removed without unevenness.

By connecting a suction device for suctioning the effluent from the porous wall to the stirring and washing chamber, in addition to the centrifugal action due to the rotation of the stirring trochanter, the suction action of the suction device causes the washing to be performed from the grain surface. The bran removed and the soluble substances dissolved from the bran can be forcibly discharged from the porous wall together with water, so that the bran stripped off from the grain surface can be reliably separated from the grain. At the same time, the soluble substance can be satisfactorily flowed out without adhering to the grains, and the taste of the grains after the removal of bran does not decrease.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a vertical grain removing device.

FIG. 2 is a partially enlarged sectional view of a main shaft.

FIG. 3 is an explanatory diagram of a milling pretreatment method using a vertical grain bran removing device.

FIG. 4 is a longitudinal sectional view of a conventional bran removing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vertical grain bran removal apparatus 2 Support frame 3 Bearing 4 Bearing 5 Main shaft 6 Pulley 7 Feeding port 8 Discharge port 9 Machine frame 10 Spiral rotator 11 Stirrer blade 12 Stirring rotator 13 First fountain port 14 Stirring friction chamber DESCRIPTION OF SYMBOLS 15 First water supply port 16 Water supply pipe 17 Stirring trowel 18 Perforated wall 19 Stirring washing room 20 Stirrer blade 21 Second fountain port 22 Second water supply port 23 Water supply pipe 24 Bran room 25 Duct 26 Suction device 27 Partition wall 28 Lumen 29 water tank 30 water addition nozzle 31 grain mill 32 connecting member

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Akihiko Kato 2-30 Saijo Nishihonmachi, Higashihiroshima City, Hiroshima Prefecture Inside Satake Works Co., Ltd. (72) Inventor Takeshi Kensada 2-30 Saijo Nishihonmachi, Higashihiroshima City, Hiroshima Prefecture Satake Manufacturing Co., Ltd.

Claims (4)

[Claims] 1. A stirrer having a grain supply port for milled grains on the upper part, a machine frame having a grain discharge port on the lower part, and a stirring blade which is rotatably erected in the machine frame and stirs the grains. In a vertical grain bran removing device provided with a trochanter and a fountain port for adding water to grains, an upper part of the stirring trochanter is surrounded by a non-porous wall to form a stirring friction chamber, while the stirring is performed. A lower part of the trochanter is surrounded by a porous wall to form a stirring and washing chamber, and a first fountain port is provided at an upper end of the stirring and friction chamber, and a second fountain port is provided at an upper end of the stirring and cleaning chamber, The pressure of the stirring friction chamber is set to a pressure at which a grain surface layer is slightly peeled off by the grain friction between the grains, and the pressure of the stirring and cleaning chamber is set to be smaller than the pressure of the stirring friction chamber. Characteristic vertical grain removal equipment. 2. The total amount of water supplied from the first fountain and the second fountain is 2 to 5% with respect to the grain weight, and the amount of water supplied from the second fountain is 3. The vertical grain bran removing device according to claim 1, wherein the water supply amount is larger than the water supply amount from one fountain port. 3. The vertical grain removing and bran removing apparatus according to claim 1, wherein the diameter of the stirring trowel in the stirring and washing chamber is larger than the diameter of the stirring trowel in the stirring friction chamber. 4. The vertical grain bran removing apparatus according to claim 1, wherein a suction device for sucking outflow from the porous wall is connected to the stirring and washing chamber.