JPH0624640B2 - Grain refiner - Google Patents

Description

TECHNICAL FIELD The present invention relates to a grain refiner.

(Prior Art) Japanese Patent Publication Nos. 32-8660 and 33
Japanese Unexamined Patent Publication No. 64-64 describes a technique of polishing (polishing) and then polishing (friction) polishing.

The above is different for the grinding polishing machine and the friction polishing machine, but the one having a uniaxial shape is also known as described in JP-B-47-652.

(Problems to be solved by the invention) In the former, the grinding and polishing machines are separate from each other,
The structure is complicated. The latter has a simple structure because it has a uniaxial shape, but since the horizontal axis shows grains are distributed only in the lower part, fluffing is inevitable. In addition, grinding grinding and friction grinding
Although the rotation speeds are totally different, the difference cannot be generated.

However, it is possible to obtain a grinding and friction polishing device with a small structure even if the vertical axis is distributed evenly around the entire circumference.

(Object of the invention) Accordingly, the present invention is intended to prevent porphyritism on the vertical axis and to reduce the size of the vertices so that the refinement according to the purpose of refined grains can be achieved.

(Means for Solving the Problem) Therefore, according to the present invention, an ascending frictional polishing chamber A formed around the friction rotation grain roll 16 fixed to the longitudinal rotation main shaft 10.
And a flow-down type grinding and polishing chamber B formed around a grinding and rotating grain refinement roll 27 fixed to the outer periphery of a rotary cylinder 30 concentrically provided on the outer periphery of the vertical rotation spindle 10, and the grinding and polishing chamber B.
In the grain refining device, which comprises a connecting path 43 for guiding the rice grains that have been ground and refined to the lower part of the friction and polishing chamber A, and the friction rotation grain refinement roll 16 and the grinding rotation grain refinement roll 27. A grain refining device which is rotated by each separate rotating mechanism, a grain refining device in which an upper feeding and feeding roll 15 is provided below the friction rotation grain refining roll 16, and the grinding and polishing chamber B. The resistance valve 42
It is a grain refiner equipped with.

(Example) The structure of the present invention will be described with reference to an example. 1 is a frame installed on the floor, and 2 is a frame of the frame 1. The frame 1 is a thin iron plate and is entirely formed in a box shape.

A horizontal partition 3 is provided at a lower position in the frame 1, and a transmission chamber 4 is formed under the horizontal partition 3. A vertical through hole 5 is formed in the center of the horizontal partition base 3, and a vertical cylinder 6 is placed in the upper center of the through hole 5 of the horizontal partition base 3, and a screw 7 is attached to the horizontal partition base 3.
Fixed by.

A collar-shaped support base 8 is formed at the upper end of the vertical cylinder 6. A hollow vertical rotation main shaft 10 is provided in the vertical cylinder 6 via bearings 9, 9.
Axis.

Reference numeral 11 is a suction chamber formed between the vertical rotation main shaft 10 and the vertical shaft cylinder 6, reference numeral 12 is a suction cylinder attached to the outer periphery of the vertical rotation main shaft 6, and reference numeral 13 is a suction hole formed in the vertical rotation main shaft 10.

The lower end of the vertically rotating main shaft 10 passes through the through hole 5 and projects below the horizontal partitioning base 3 to fix the passive pulley 14. The upper end of the vertically rotating main shaft 10 projects upward from the support base 8, the upper feed grain roll 15 is fitted and attached from above, and the friction rotary grain roll 16 is fitted and attached from above. A white rice discharge port 17 is formed at a position facing the upper portion of the friction rotation grain refinement roll 16. Resistance valve 18 for white rice discharge 17
And a drain gutter 19 are provided.

The periphery of the friction-rotating grain mill roll 16 is surrounded by the friction-polishing net 20 so that a friction-polishing chamber A is formed between the rotating rotary grain-polishing roll 16 and the friction-polishing net 20. The circumference of the upper feeding and feeding roll 15 is surrounded by the feeding barrel 21. A grain feeding chamber 22 is provided between the upper feeding grain feeding roll 15 and the grain feeding cylinder 21.

The grain transfer cylinder 21 is inserted into the frame 1 from above, the lower end of the grain transfer cylinder 21 is brought into contact with the support base 8, and is fixed to the support base 8 with a screw 23.

An outer cylinder 24 that surrounds the outside of the friction rotation grain refinement roll 16 is integrally provided on the upper part of the grain transfer cylinder 21. The friction-sewing net 20 is fitted into the outer cylinder 24 from above, and a bran chamber 25 is formed between the outer cylinder 24 and the friction-sewing net 20. A screw port 26 is provided at the upper end of the outer cylinder 24, and a screw lid 27 is screwed into the screw port 26.

A discharge chamber 28 is formed in the upper portion of the screw lid 27. The white rice discharge port 17 is formed in the discharge chamber 28. The rubbing sprout net 20 is fitted from above with the screw lid 27 removed, the lower end of the sprout net 20 is engaged with the step portion of the grain transfer cylinder 21 and stopped, and the upper end of the friction sprout net 20 has a screw lid. You can stop at 27.

The outer circumference of the grain transfer cylinder 21 is cylindrical, the bearing 29 is fitted on the outer circumference, and the rotary cylinder 30 is fitted on the outer circumference of the bearing 29. A passive pulley 31 is fitted to the upper end of the rotary cylinder 30 so as to form an integrated structure, and a belt is wound around the passive pulley 31 and a motor to rotate the rotary cylinder 30 at high speed.

The rotary grinding grain 33, the supply cylinder 32, and the passive pulley 31 are fitted to the rotary cylinder 30 in that order from the bottom.

A flange 45 is formed on the lower end of the rotary cylinder 30, and a plurality of grinding rotary fine grain rolls 33 are superposed on the flange 45 and fitted. Then, the supply cylinder 32 is fitted to the rotary cylinder 30, and the passive pulley 31 is fitted thereon.

The outer circumference of the grinding rotary fine grain roll 33 is surrounded by the grinding and polishing net 34. The area between the grinding rotary fine grain roll 33 and the fine grinding net 34 is a fine grinding chamber B.

A fixed outer cylinder 35 is surrounded by the outer circumferences of the grinding rotary fine grain roll 33, the supply cylinder 32, and the receiving pulley 31. Fixed outer cylinder 3
5, the lower end abuts on the support base 8 and is fixed by the screw 36, and the upper end faces the boundary between the supply cylinder 32 and the passive pulley 31,
The supply cylinder 32 is surrounded and the passive pulley 31 is exposed. The grinding net 34 is attached to the fixed outer cylinder 35 from the outside.

A cover tube is attached to the outer periphery of the grinding and polishing net 34, and the bran chamber 3
Form 7. 38 is a suction port.

A supply port 39 is provided above the fixed outer cylinder 35, and the supply port 39
Attach the supply gutter 40 to. A discharge port 41 is opened at the lower end of the grinding and refining chamber B, and a grinding resistance valve 42 is attached to the discharge port 41. Reference numeral 43 denotes a communication path, which supplies the rice grain, which has been discharged from the discharge port 41 and which has undergone the initial polishing, to the grain transfer chamber 22. 44 is a suction port.

(Operation of Example) Next, a method of use will be described.

The motor rotates the passive pulley 14 to rotate the longitudinal rotation main shaft 10, and the friction rotation grain refinement roll 16 and the upper feed grain transfer roll 15 are rotated at the number of revolutions suitable for friction polishing. Further, the passive pulley 31 is rotated by another motor to rotate the grinding rotary grain roll 33 at a rotation speed suitable for grinding and polishing.

Next, when the suction devices attached to the suction port 38 and the suction port 44 are respectively rotated, the suction cylinder 12, the suction chamber 11,
The air sucked into the vertically rotating main shaft 10 through the suction hole 13 is blown out from the blowing port of the friction rotating grain roll 16 and is sucked through the suction port 44. Further, the bran in the bran chamber 37 is sucked through the suction port 38.

When brown rice is supplied from the supply gutter 40 in this state, the surface is initially ground and refined by the grinding rotary grain refinement roll 33 that rotates in an optimum state, and the brown rice with a scratch on the surface descends and contacts from the discharge port 41. It is sent to the lower part of the grain transfer chamber 22 through the path 43. In this case, the degree of initial grinding and polishing is adjusted by the resistance of the resistance valve 42.

Brown rice that has undergone initial grinding and polishing flows into the grain transfer chamber 22,
It is raised by the upper feed grain roll 15. The ascending by the upward feed grain feeding roll 15 is also performed in the most suitable state, the finishing grain polishing is performed by the friction grain rotating roll 16, and the grain is taken out from the white rice discharge port 17 as finished rice.

The degree of finishing friction is adjusted by the resistance valve 18.

(Effect) Conventionally known Japanese Patent Publication No. 11-8660 and Japanese Patent Publication No. 11
Japanese Laid-Open Patent Publication No. 63-63 describes a technique of polishing (polishing) and then polishing (polishing). The above is a grinding machine and a friction machine, so the construction cost is high and it is not suitable for general use, but a uniaxial inexpensive machine is also available.
It is known in the art. However, although the structure is simple because it has a uniaxial shape, grains are distributed only in the lower part due to the horizontal axis, and fluffing is inevitable. Further, since the grinding rotation and the friction grinding are different in the number of rotations, but the difference cannot be generated, the original performance cannot be expected.

However, according to the present invention, the ascending-type friction milling chamber A formed around the friction rotation grain mill roll 16 fixed to the vertical rotation spindle 10 and the rotary cylinder 30 concentrically provided on the outer peripheral portion of the vertical rotation spindle 10. The flow-down type grinding and polishing chamber B formed around the grinding rotary grain milling roll 27 fixed to the outer periphery of the grinding mill, and the rice grains that have been ground and refined in the grinding and polishing chamber B are guided to the lower part of the friction and polishing chamber A. Since the grain refining device is composed of the connecting passage 43, the cost is reduced as a whole because of the coaxial structure.

Further, since the friction rotation grain refinement roll 16 and the grinding rotation grain refinement roll 27 are rotated by separate rotating mechanisms, the friction rotation grain refinement roll 16 and the grinding rotation grain refinement are provided. All of the grain rolls 27 rotate in an optimum state and can reasonably polish rice.

Further, since the grain refining device is provided with the resistance valve 42 at the discharge portion of the grinding and polishing chamber B, grinding load polishing can be performed, and the degree of initial polishing can be adjusted.

[Brief description of drawings]

FIG. 1 is an overall vertical sectional side view. Explanation of symbols 1 ... Frame, 2 ... Bone frame, 3 ... Horizontal partition, 4 ...
Transmission chamber, 6 ... Vertical axis cylinder, 7 ... Screw, 8 ... Support base, 9
...... Bearing, 10 …… Vertical rotation main shaft, 11 …… Blowing chamber, 12
...... Blowing cylinder, 13 ...... Blowing hole, 14 ...... Passive pulley, 1
5 ... Upward feeding grain-feeding roll, 16 ... Friction rotary grain-refining roll, 17 ... White rice discharge port, 18 ... Resistance valve, 19 ... Draining gutter, 20 ... Rubbing sprout net, 21 ... Grinding cylinder , 22 ……
Grain transfer room, 23 ... screw, 24 ... outer cylinder, 25 ... bran room,
26 ... Screw mouth, 27 ... Screw lid, 28 ... Discharge chamber, 2
9 ... Bearing, 30 ... Rotating cylinder, 31 ... Passive pulley, 3
2 ... Brown rice supply cylinder, 33 ... Grinding rotary grain roll, 34
…… Grinding sprout net, 35 …… Fixed outer cylinder, 36 …… Screw, 3
7 ... Bran discharge chamber, 38 ... suction port, 39 ... supply port, 4
0 ... Supply gutter, 41 ... Discharge part, 42 ... Resistance valve, 43
...... Communication path, 44 …… Suction port, 45 …… Tsuba, A …… Friction grinding chamber, B …… Grinding grinding chamber.

Claims (4)

[Claims] 1. An ascending friction grinding and polishing chamber A formed around a friction-rotating fine grain roll 16 fixed to a vertical-rotating main shaft 10, and a rotary cylinder 30 concentrically provided on the outer peripheral portion of the vertical-rotating main shaft 10.
The flow-down type grinding and polishing chamber B formed around the grinding rotary grain milling roll 27 fixed to the outer periphery of the grinding mill, and the rice grains that have been ground and refined in the grinding and polishing chamber B are guided to the lower part of the friction and polishing chamber A. A grain refining device comprising a connecting path 43 for connecting. 2. The grain refining device according to claim (1), wherein the friction rotation grain refinement roll 16 and the grinding rotation grain refinement roll 27 are rotated by separate rotating mechanisms. . 3. In claim (1), an upper feed grain feeding roll 15 is provided below the friction rotary grain rolling roll 16.
A grain refining device. 4. A grain refining device according to claim (1), wherein a resistance valve 42 is provided at the discharge part of the grinding and polishing chamber B.