JP2002066344A - Grinding and friction grain refining device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the grinding effect of grain at a low cost and to regulate the balance of the resistance to be imparted to the respective grains in a polishing and grain refining chamber and friction grain refining chamber. SOLUTION: The uniaxial polishing and friction grain refining device 10 refines the grains by subjecting the grains to grinding treatment in the grinding and grain refining chamber 42 and to friction treatment in the friction grain refining chamber 60. Backward feeding spirals 40B of a grinding and grain refining roll 40 imparts upward transporting force to the grains and therefore the resistance is uniquely imparted to the grains in the grinding and grain refining chamber 42 and a grinding effect may be improved. The resistance to the grains in the grinding and grain refining chamber 42 may be regulated by regulating the distribution of the installation lengths of the forward feeding spirals 40A and backward feeding spirals 40B of the grinding and grain refining roll 40 and the resistance to the grains in the friction grain refining chamber 60 may be regulated by regulating the pressure to be imparted to a grain refining resistance valve 80 and therefore the balance of the resistance to be imparted to the respective grains in the grinding and grain refining chamber 42 and the friction grain refining chamber 60 may be regulated. Since the provision of the grinding and grain refining roll 40 with the backward feeding spirals 40B is merely necessitated, the cost may be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grinding friction milling apparatus in which a grinding mill roll and a friction mill roll are arranged on the same axis.

[0002]

2. Description of the Related Art At present, for example, Japanese Patent Application No. 11-299255.
No. 1, a single-shaft grinding friction milling device is being developed. This single-shaft grinding friction milling device has a grinding milling unit at the top. A cylindrical grinding mill is provided in the grinding mill unit, and abrasive grains are provided on the inner peripheral surface of the grinding mill. An axial grinding mill roll is provided in the grinding mill cylinder, and a spiral spiral ridge is formed on the outer peripheral surface of the grinding mill roll. A grinding chamber is formed between them.

[0003] A friction milling unit is provided below the grinding milling unit. The friction milling unit is provided with a cylindrical friction milling cylinder, and an axial friction milling roll is provided in the friction milling cylinder. A plurality of parallel ridges are formed on the outer peripheral surface of the friction milling roll along the axial direction, and a friction milling chamber is formed between the friction milling roll and the friction milling cylinder. Further, a milling resistance valve is provided at a lower part of the friction milling chamber, and the milling resistance valve is connected to a milling resistance adjusting motor via a resistance valve link frame and a milling resistance adjusting spring.

[0004] In the grinding and milling section of the single-axis grinding friction milling apparatus, the grains are conveyed downward by spiral ridges in the grinding and milling chamber by rotating the grinding and milling roll, and the surface of the grains is reduced. Is ground by the abrasive grains on the inner peripheral surface of the grinding mill. The grain that has been subjected to the grinding process in the grinding and milling chamber is transported into the friction and milling chamber of the friction and milling section. In the friction milling department,
By rotating the friction milling roll, the grains are agitated by parallel ridges in the friction milling chamber, and the bran layer on the grain surface is removed by the frictional force acting between the grains such that the bran layer is torn. . As described above, since the roughing of the crushed grain can be performed in the grinding crushing section and the crushing of the crushed grain can be performed in the rubbing and crushing section, the crushing processing capacity can be reduced as compared with the case where only the rubbing and polishing section is used. Can improve the grain efficiency. Also, by adjusting the pressure applied to the milling resistance valve by the milling resistance adjusting motor, the resistance applied to the grains in the grinding mill chamber and the friction milling chamber by the milling resistance valve is adjusted, and In this configuration, the degree of crushing of grains is adjusted.

[0005] However, in such a single-shaft grinding and milling apparatus, not only the resistance imparted to the grains in the friction and milling chamber but also the grinding in the grinding and milling chamber is controlled by the milling resistance valve provided at the lower part of the grinding and milling chamber. The resistance imparted to the grain must also be adjusted. For this reason, the balance between the resistance applied to the grains in the grinding mill chamber and the resistance applied to the grains in the friction milling chamber cannot be adjusted, and therefore, the resistance applied to the grains in the friction milling chamber cannot be adjusted. Is set to an appropriate value, the resistance applied to the grains in the grinding and milling chamber may be lower than the appropriate value, and the amount of grinding of the grains may be reduced (the grinding effect may be reduced).

Here, in this case, if the resistance of the grain resistance valve is increased in order to increase the degree of grinding (the amount of grinding) of the grain, the temperature of the grain in the grain is excessively increased and the grain is increased. There is a problem that the quality of the product deteriorates.

Here, in order to solve the above problem,
If the milling resistance valve (including the resistance valve link frame, the milling resistance adjusting spring and the milling resistance adjusting motor) provided in the lower part of the friction milling chamber is provided also in the lower part of the grinding milling chamber, The problem that it becomes cost arises.

[0008]

SUMMARY OF THE INVENTION In consideration of the above facts, the present invention can improve the grinding effect of the grains, and also provides the resistance to the grains in the grinding and milling chamber and the grains in the friction and milling chamber. It is an object of the present invention to obtain a grinding and friction milling device that can adjust the balance with the resistance applied to the grinding wheel and can realize this at low cost.

[0009]

A grinding friction milling machine according to claim 1 is formed in a cylindrical shape, and has a grinding milling cylinder having abrasive grains on at least a part of an inner peripheral surface thereof and a shaft. A spiral forward feed spiral is formed on the outer peripheral surface and a spiral reverse feed spiral is formed on the outer peripheral lower portion, and is disposed inside the grinding mill and between the grinding mill. The grinding spiral is formed, and the forward spiral imparts a downward conveying force to the grains in the grinding mill chamber by being rotated, and the reverse spiral rotates the grains in the grinding mill chamber. A grinding mill roll that imparts an upward conveying force to the friction milling cylinder that is cylindrical and is provided below the grinding mill cylinder, and is axially formed along the axial direction on the outer peripheral surface. A plurality of ridges are formed and provided on the same axis as the grinding mill roll, and are arranged inside the friction milling cylinder. A friction milling chamber is formed between the friction milling cylinder and the downstream side of the grinding milling chamber, and the plurality of ridges stir the grains in the friction milling chamber by being rotated. A friction milling roll, and a grain discharge port of the friction milling chamber is provided closed in a state where pressure is applied, and provides resistance to the grains in the friction milling chamber and a pressure in the friction milling chamber. A grain resistance valve that opens the grain outlet at an opening corresponding to the pressing force of the grain.

[0010] In the uniaxial grinding friction milling device according to the first aspect of the present invention, the forward and backward spirals of the rotating grinding mill roll apply a vertical conveying force to the grains in the grinding mill chamber. Then, the surface of the grain is ground by the abrasive grains on the inner peripheral surface of the grinding grain cylinder. Further, the grains discharged from the grinding and milling chamber into the friction and milling chamber are stirred by a plurality of ridges of a rotating friction and milling roll, and the bran layer on the grain surface is formed by the frictional force acting between the grains. Remove by tearing. This allows
Rough milling can be performed in the grinding and milling room and milling can be performed in the friction and milling room. The efficiency of grain milling can be increased.

[0011] A grain resistance valve for closing the grain discharge port of the friction milling chamber in a state in which pressure is applied provides resistance to the grains in the friction milling chamber, The grain discharge port is opened at an opening corresponding to the pressing force of the grains, and the grains after the grain refining process are discharged from the grain discharge port.

[0012] Here, on the outer peripheral surface of the grinding and milling roll, not only a forward spiral that imparts a downward conveying force to the grains, but also a reverse spiral that imparts an upward conveying force to the grains is provided. The resistance of the grains in the grinding and milling chamber is uniquely imparted by the reverse spiral. For this reason, the grains stay in the grinding and graining chamber, and thereby, the grinding amount of the grains increases, and the grinding effect can be improved.

Therefore, it is possible to increase the degree of crushing of the grains without increasing the resistance of the crushing resistance valve as in the prior art, thereby preventing the temperature of the grains in the cereal grains from excessively increasing. It is possible to suppress the deterioration of the grain quality by suppressing it.

Further, by adjusting the distribution of the installation length of the forward spiral and the reverse spiral on the outer peripheral surface of the grinding mill roll,
The magnitude of the resistance to the grains in the grinding and milling chamber can be freely adjusted. On the other hand, by adjusting the pressure applied to the milling resistance valve, the magnitude of resistance to the grains in the friction milling chamber can be freely adjusted. For this reason, it is possible to adjust the balance between the resistance applied to the grains in the grinding mill chamber and the resistance applied to the grains in the friction mill chamber.

[0015] Further, by merely providing a reverse feeding spiral in addition to the forward feeding spiral on the outer peripheral surface of the grinding and milling roll, it is possible to independently apply resistance to the grains in the grinding and milling chamber, so that the cost can be reduced.

A grinding friction milling device according to a second aspect of the present invention is the grinding friction milling device according to the first aspect, wherein the grinding friction milling device is cylindrical and provided between the grinding milling cylinder and the friction milling cylinder. And the crushing cylinder and the crushing mill roll and the friction crushing roll are provided on the same axis as the helical grinding spiral formed on the outer peripheral surface of the crushing cylinder. A grain-feeding chamber which is arranged inside and communicates with a downstream side of the grinding-milling chamber and an upstream side of the friction-milling chamber between the grain-sending cylinder is formed and is rotated to rotate the grain-feeding spiral. And a grain feeding roll for transporting the grains in the grain feeding chamber downward.

In the grinding friction milling device according to the second aspect,
When the grain feeding roll rotates, the grinding process is completed, and the grain discharged from the grinding milling chamber to the grain feeding chamber is conveyed downward (friction milling chamber) by the grain feeding spiral.

Here, pressure can be applied to the grains in the friction milling chamber by the grain conveying force below the grain feeding spiral, so that, for example, the upward grain conveying force due to the reverse spiral of the grinding mill roll is large. Even in such cases, it is possible to prevent the pressure applied to the grains in the friction milling chamber from becoming excessively low.

[0019]

FIG. 1 is a front view, partially broken away, of an internal structure of a single-shaft grinding friction milling apparatus 10 according to an embodiment to which a grinding friction milling apparatus of the present invention is applied. Shown.

The single-shaft grinding friction milling device 10 has a case 12 in which the upper partition frame 1 is arranged in order from the top.
4. A lower partition frame 18 and a horizontal partition 20 are provided.

Inside the case 12 is a hollow longitudinally rotating main shaft 22.
The vertical rotation main shaft 22 is rotatably supported by a vertical fixed cylinder 26 fixed to the horizontal partition 20.
The lower end of the vertical rotation main shaft 22 protrudes from the horizontal partition 20, and a passive pulley 28 is fixed to the lower end of the vertical rotation main shaft 22. The passive pulley 28 is connected to a motor (not shown) via a belt (not shown).

A blow hole 22 is provided on the peripheral surface of the lower portion of the vertical rotary spindle 22.
A is formed in plurality, and a blow-in tube 30 is attached to the vertical fixed tube 26 corresponding to the blow-in hole 22A. The blowing cylinder 30 is connected to a blower (not shown), and a blowing chamber 32 is formed between the lower peripheral surface of the vertical rotation spindle 22 and the inner wall of the vertical fixed cylinder 26. A plurality of air outlets (not shown) are formed on a peripheral surface of a substantially central portion in the axial direction of the vertical rotation main shaft 22, and are blown by a blower, and are vertically passed through a blowing cylinder 30 and a blowing chamber 32 from a blowing hole 22 </ b> A. The air blown into the inside (hollow portion) of the rotating main shaft 22 is blown out from the blowing port.

The upper portion of the vertical rotation main shaft 22 protrudes from the upper wall of the case 12, and a fixing screw 50 is screwed to the upper end of the vertical rotation main shaft 22.

Above the case 12, a cylindrical fixed cylinder 24 is provided.
Is provided. The lower end of the fixed cylinder 24 is fixed to the upper wall of the case 12, and a vertically rotating main shaft 22 is arranged inside the fixed cylinder 24. The end of the supply hopper 36 is fixed to the upper end of the fixed cylinder 24, and the inside of the fixed cylinder 24 and the inside of the supply hopper 36 are communicated with each other, so that grains of rice (brown rice) and wheat are supplied to the supply hopper 36. Then, the grains are supplied into the fixed cylinder 24. The end of the grain feed pipe 16 is inserted into the supply hopper 36, and the grains transported in the grain feed pipe 16 are supplied to the supply hopper 36.

A cylindrical grinding grain cylinder 34 is fixed to the inner peripheral surface of the fixed cylinder 24. As shown in detail in FIG. 2, abrasive grains 34A are provided on the entire inner peripheral surface of the grinding mill cylinder 34. The abrasive grains 34A are made of silicon carbide or the like (ultra-hard grains), and are fixed to the inner peripheral surface of the grinding grain cylinder 34 by a binder 34B with the sharp cutting edge portion exposed.

A substantially cylindrical grinding mill roll 40 is provided in the grinding mill cylinder 34, and a grinding mill chamber 42 is formed between the grinding mill cylinder 34 and the grinding mill roll 40. I have. The grinding mill roll 40 is fitted on the upper part of the vertical rotation spindle 22, and the grinding mill roll 40 rotates integrally with the vertical rotation spindle 22. By removing the fixing screw 50 from the upper end of the vertical rotation spindle 22, the grinding mill roll 40 can be removed from the vertical rotation spindle 22.

A spiral forward spiral 40A is formed in the upper part of the outer peripheral surface of the grinding mill roll 40. On the other hand, a single spiral spiral 40B is formed in the lower part of the outer peripheral surface of the grinding mill roll 40. The forward spiral 40A and the reverse spiral 40B have a so-called ball screw shape, and when the grinding mill roll 40 is cut along a plane passing through its axis, the edge of the cut surface has a substantially sine curve shape or an arc shape. As shown in FIG. Here, when the vertical rotation main shaft 22 is rotated, the grinding and milling rolls 40 are integrally rotated, and a forward feeding spiral 40A imparts a downward conveying force to the grains in the grinding and milling chamber 42, and the reverse feeding is performed. The spiral 40B applies an upward conveying force to the grains in the grinding and graining chamber 42.

At the upper part in the case 12, a cylindrical grain feeding cylinder 46 is provided.
It is fixed to the upper partition frame 14 inside. The vertical rotation spindle 22 is disposed inside the grain feeding cylinder 46, and the inside of the grain feeding cylinder 46 (upstream side of the grain feeding chamber 48 described below) and the inside of the fixed cylinder 24 (downstream side of the grinding milling chamber 42) Communicating.

A substantially cylindrical feed roll 44 is fitted to the vertical rotating spindle 22 below the grinding mill roll 40, and the feeding roll 44 is integrally connected to the grinding mill roll 40 on the same axis. Have been. A spiral feeding spiral 44 </ b> A is formed on the outer peripheral surface of the feeding roll 44, and the periphery of the feeding roll 44 is surrounded by a feeding cylinder 46. A grain feeding room 48 is formed therebetween. Here, when the vertical rotation main shaft 22 is rotated, the grain feeding roll 44 rotates integrally, and the grain feeding chamber 4 is rotated by the grain feeding spiral 44A.
The grains in 8 are conveyed downward.

A substantially cylindrical friction milling roll 56 is fitted to the vertical rotating main shaft 22 below the grain feeding roll 44, and the friction milling roll 56 is coaxial with the grinding milling roll 40 and the grain feeding roll 44. It is integrally connected above. A plurality of parallel ridges 56A (three in this embodiment) are formed on the outer peripheral surface of the friction milling roll 56, and the parallel ridges 56A are parallel to each other along the axial direction of the friction milling roll 56. It has been. A plurality of blowing holes 56B are formed on the peripheral surface of the friction milling roll 56.

As shown in detail in FIG.
6, a friction milling cylinder 58 formed in a substantially hexagonal (deformed dodecagonal) cylindrical shape is provided between the upper partition frame 14 and the lower partition frame 18. Are located in A friction milling chamber 60 is formed between the friction milling cylinder 58 and the friction milling roll 56, and the friction milling chamber 60 communicates with the downstream side of the grain feeding chamber 48. In addition, friction milling cylinder 58
A large number of friction removal bran holes 58A are formed in the peripheral surface of the.
Here, when the vertical rotation main shaft 22 is rotated, the friction milling roll 56 rotates integrally, and the grains in the friction milling chamber 60 are stirred by the plurality of parallel ridges 56A.

The friction milling cylinder 58 can be divided into two along the axial direction, and the periphery of the friction milling cylinder 58 is composed of a right grain cylinder frame 62A and a left grain cylinder frame 62B. And is pressed down from outside by a grain cylinder frame 62. One end of the right milling cylinder frame 62A and one end of the left milling cylinder frame 62B are
4A and 64B, respectively, and the other ends of the right grain cylinder frame 62A and the left grain cylinder frame 62B are fastened by fixing bolts 66. Therefore, by opening the grain cylinder frame 62, friction is generated. The grain cylinder 58 can be replaced.

Around the grain cylinder frame 62, a cylindrical outer cylinder 6 is provided.
8 are provided. A bran discharge pipe 7 is provided on the side wall of the outer casing 68.
0 is fixed, and a bran removing chamber 72 is provided inside the outer casing 68.
Are formed. The bran discharge pipe 70 is connected to a blower (not shown). When replacing the friction milling cylinder 58, a fixing bolt 73 provided at one end of the outer cylinder 68 is used.
Is loosened and the outer casing 68 is disassembled right and left, whereby the outer casing 68 is opened. In addition, the case 1 facing one end of the outer casing 68 (the side fastened by the fixing bolt 73).
2 is provided with a cover 74 on the side wall.
The case 12 can be opened and closed freely by a screw 76.
For this reason, the friction milling cylinder 58 can be attached to and detached from the case 12 by loosening the screw 76 and opening the cover 74.

A cylindrical sleeve 78 is rotatably supported below the friction milling roll 56 on the vertical rotating main shaft 22, and the outer periphery of the sleeve 78 (the grain outlet 60 A at the lower end of the friction milling chamber 60). ) Is provided with a milling resistance valve 80. The milling resistance valve 80 is slidable up and down over the outer circumference of the sleeve 78, and has an intermediate portion extending in a funnel shape. A resistance valve link frame 82 is provided below the grain resistance valve 80.
Is rotatably supported at one end of the resistance valve link frame 8.
The approximate center of 2 is rotatably supported by the lower partition frame 18. The other end of the resistance valve link frame 82 is connected to a milling resistance adjusting motor 86 via a milling resistance adjusting spring 84. By operating the milling resistance adjusting motor 86, the milling resistance adjusting spring 84 is turned on. The pressure (biasing force) applied to the milling resistance valve 80 via the resistance valve link frame 82 is adjusted, and the milling resistance valve 80 closes the grain discharge port 60A with this pressure. Thereby, resistance is given to the grains in the friction milling chamber 60, and the grain outlet 6 is opened at an opening corresponding to the pressing force of the grains in the friction milling chamber 60 to the milling resistance valve 80.
OA is released.

A funnel-shaped discharge disk 88 is fitted to the vertical rotation main shaft 22 below the grain resistance valve 80, and the discharge disk 88 rotates integrally with the vertical rotation main shaft 22. Discharge board 88
Are arranged in a flange-shaped support base 90 formed integrally with the vertical fixed cylinder 26. A discharge gutter 92 is fixed to the support base 90, and the grains that have fallen from the friction milling chamber 60 into the support base 90 after the completion of the grain milling are discharged from the discharge gutter 92 to the outside of the case 12 by the rotating discharge board 88. It is a structure discharged to.

Next, the operation of the present embodiment will be described.

In the above-described single-shaft grinding friction milling apparatus 10, the vertical rotating main shaft 22 is rotated by a motor (not shown) via a belt (not shown) and a passive pulley 28, and is integrally connected on the same shaft. Grinding milling roll 40,
The grain feeding roll 44, the friction milling roll 56, and the discharge board 88 are integrally rotated. Further, when grains of rice (brown rice) or wheat are supplied to the supply hopper 36 via the grain feeding pipe 16, the grains are supplied into the grinding and graining chamber 42.

In the grinding and graining chamber 42, the surface of the grain is ground and refined while imparting a vertical conveying force to the grain by a forward spiral 40A and a backward spiral 40B of the grinding grain roll 40. Grinding is performed by the abrasive grains 34A on the inner peripheral surface of the grain cylinder 34.

The grains that have been subjected to the grinding process in the grinding and milling chamber 42 are discharged into the grain feeding chamber 48 by the grain conveying force and the free fall of the forward spiral 40A of the rotating grinding mill roll 40.
It is conveyed into the friction milling chamber 60 by the spinning spiral 44 </ b> A of the rotating spinning roll 44.

The grains transported into the friction milling chamber 60 are agitated by the plurality of parallel ridges 56A of the friction milling roll 56, and the bran layer on the grain surface is torn by the frictional force acting between the grains. Removed as if

As described above, since the roughing of the crushed grain can be performed in the grinding and crushing chamber 42 and the crushing of the crushed grain can be performed in the rubbing and milling chamber 60, the crushing of the crushed grain only in the rubbing and milling chamber 60 can be performed. In comparison with the present invention, the grain processing capacity can be improved and the grain milling efficiency can be increased.

When the milling resistance adjusting motor 86 is operated, the milling resistance adjusting spring 84 is connected to the resistance valve link frame 8.
2, the pressure applied to the mill resistance valve 80 is adjusted,
Thus, resistance is given to the grains in the friction milling chamber 60 by the milling resistance valve 80. The milling resistance valve 80 is
Since the grain outlet 60A is opened at an opening corresponding to the pressing force of the grains in the friction milling chamber 60, the resistance applied to the grains in the friction milling chamber 60 is kept constant.

The grain subjected to the friction processing in the friction milling chamber 60 falls into the support base 90 from the grain discharge port 60A opened by the milling resistance valve 80, and is discharged from the discharge gutter 92 by the rotating discharge board 88. It is discharged out of the case 12.

The air blown by a blower (not shown) is supplied to the blow hole 2 through a blow tube 30 and a blow chamber 32.
It is blown into the inside (hollow portion) of the vertical rotation main shaft 22 from 2A, and is blown out from the blowing hole 56B to the friction milling chamber 60 through a blowing port (not shown). The air jetted into the friction milling chamber 60 is sucked in by a blower (not shown), and is discharged from the bran discharge pipe 70 through the friction removing bran hole 58A and the bran removing chamber 72. As a result, the bran layer (bran flour) on the grain surface that has been processed and removed in the grinding and milling chamber 42 and the friction and milling chamber 60 is transferred to the friction and milling chamber 60, the friction-removing hole 58 A and the bran removing chamber 72. Through the bran discharge pipe 70.

Here, on the outer peripheral surface of the grinding and milling roll 40, not only the forward spiral 40A for imparting a downward conveying force to the grains, but also the reverse spiral for imparting an upward conveying force to the grains. 4
0B is provided, and a resistance is uniquely given to the grains in the grinding and graining chamber 42 by the reverse spiral 40B. For this reason, the grains stay in the grinding and graining chamber 42, whereby the grinding amount of the grains increases, and the grinding effect can be improved.

Therefore, it is possible to increase the degree of cereal grain (eg, whiteness of polished rice) without increasing the resistance of the cereal resistance valve 80 as in the prior art. It is possible to prevent the temperature from excessively rising and prevent the quality of the grain from deteriorating.

Further, by adjusting the distribution of the installation length of the forward spiral 40A and the reverse spiral 40B to the outer peripheral surface of the grinding mill roll 40, the resistance to the grains in the grinding mill chamber 42 is reduced. The size can be adjusted freely. On the other hand, by adjusting the pressure applied to the milling resistance valve 80 by the milling resistance adjusting motor 86, the magnitude of the resistance to the grains in the friction milling chamber 60 can be freely adjusted. Therefore, it is possible to adjust the balance between the resistance applied to the grains in the grinding mill chamber 42 and the resistance applied to the grains in the friction mill chamber 60.

Further, by removing the fixing screw 50 from the upper end of the vertical rotation spindle 22, the grinding mill roll 40 can be removed from the vertical rotation spindle 22. For this reason, the distribution of the installation length of the forward spiral 40A and the reverse spiral 40B to the outer peripheral surface of the grinding mill roll 40 can be easily adjusted, and therefore, the resistance to the grains in the grinding mill chamber 42 can be reduced. The size can be easily adjusted.

Furthermore, by merely providing the reverse feed spiral 40B in addition to the forward spiral 40A on the outer peripheral surface of the grinding mill roll 40, it is possible to independently apply resistance to the grains in the grinding mill chamber 42. A configuration in which a milling resistance valve 80 (including a resistance valve link frame 82, a milling resistance adjusting spring 84, and a milling resistance adjusting motor 86) provided at the lower end of the grain chamber 60 is also provided at the lower end of the grinding mill chamber 42. The cost can be reduced as compared with the case in which it is performed.

Here, since the pressure in the grain in the friction milling chamber 60 can be applied by the grain conveying force of the grain feeding roll 44 below the grain feeding spiral 44A, for example, the grinding mill roll 4
Even when the upward conveying force of the kernel by the 0 reverse feeding spiral 40B is large, it is possible to prevent the pressure applied to the kernel in the friction milling chamber 60 from being excessively low.

The forward spiral 40 of the grinding mill roll 40 is also provided.
Because A and the reverse spiral 40B are formed in a ball screw shape,
When the grains are ground in the grinding and milling chamber 42, the movement (rotation or revolution) of the grains becomes good, and the grains can be ground overall and evenly.

Further, since the grains are ground in the grinding and graining chamber 42 in a state where the density is increased, the directions of the grains at the time of contact with the abrasive grains 34A are aligned to some extent, and are similar to the original grains. It can be crushed into a crushed shape.

In the present embodiment, the grinding mill roll 40, the feed mill roll 44, and the friction mill roll 56 are integrally connected on the same axis.
0, and the structure in which the grain feed roll 44 and the friction milling roll 56 are arranged on the same axis.

In the present embodiment, the grinding and milling cylinder 34 is used.
Although the abrasive grains 34A are provided on the entire inner peripheral surface of the grinding wheel, the abrasive grains may be provided on a part of the inner peripheral surface of the grinding and milling cylinder. And the binder 34B.

[0055]

According to the uniaxial grinding friction milling device according to the first aspect, since the resistance in the grinding milling chamber is independently imparted to the grains in the grinding milling chamber by the reverse spiral of the outer peripheral surface of the grinding milling roll, the grinding effect is improved. Can be improved. For this reason, it is possible to increase the degree of crushing of the grains without increasing the resistance of the crushing resistance valve, thereby suppressing the temperature of the grains in the cereal grains from excessively increasing, thereby reducing the grain size. Quality can be prevented.

Further, by adjusting the distribution of the installation length of the forward spiral and the reverse spiral on the outer peripheral surface of the grinding mill roll,
Because it is possible to adjust the resistance to the grains in the grinding mill chamber and to adjust the pressure applied to the milling resistance valve, it is possible to adjust the resistance to the grains in the friction milling chamber, The balance between the resistance to the grains in the grinding mill and the resistance to the grains in the friction mill can be adjusted.

Further, by merely providing a reverse feed spiral in addition to the forward feed spiral on the outer peripheral surface of the grinding mill roll, it is possible to independently apply resistance to the grains in the grinding mill chamber, thereby reducing the cost.

In the grinding friction milling apparatus according to the second aspect,
Since pressure can be applied to the grains in the friction milling chamber by the grain conveying force of the grain feeding spiral downward of the grain feeding spiral, for example, when the grain conveying force upward by the reverse feeding spiral of the grinding mill roll is large. However, it is possible to prevent the pressure applied to the grains in the friction milling chamber from becoming excessively low.

[Brief description of the drawings]

FIG. 1 is a partially broken front view showing the internal structure of a single-axis grinding friction milling apparatus according to an embodiment of the present invention.

FIG. 2 is a sectional view of a grinding grain mill.

FIG. 3 is a sectional view taken along line 3-3 of FIG. 1;

[Explanation of symbols]

Reference Signs List 10 uniaxial grinding friction milling device (grinding friction milling device) 34 grinding milling cylinder 34A abrasive grain 40 grinding milling roll 40A forward spiral 40B reverse spiral 42 grinding milling chamber 44 milling roll 44A milling spiral 46 feeding Grain 48 Feeding room 56 Friction milling roll 56A Parallel ridges (projections) 58 Friction milling cylinder 60 Friction milling room 60A Grain outlet 80 Milling resistance valve

Continuation of the front page (72) Inventor Yoshikazu Yoshikazu 404 Oinomori, Tendo City, Yamagata Prefecture F-term in the Yamamoto Works 4D043 AA03 AA05 DA03 DE13 DE51 DE56 DE58 DH15 DH62 DH76 HC06

Claims (2)

[Claims] 1. A ground grinding cylinder having a cylindrical shape and having abrasive grains on at least a part of an inner peripheral surface thereof, and a spiral forward feeding spiral formed on an outer peripheral surface of a shaft and having an outer peripheral surface. A spiral backward spiral is formed at the bottom,
In addition, a grinding wheel is formed between the grinding wheel and the grinding wheel to form a grinding chamber between the grinding wheel and the forward spiral is rotated downward to the grains in the grinding wheel. A grinding mill roll that imparts a conveying force and imparts an upward conveying force to the grains in the grinding mill chamber while the reverse feeding spiral is provided, and has a cylindrical shape, and is provided below the grinding mill cylinder. A friction milling cylinder, a plurality of ridges are formed along the axial direction on the outer peripheral surface and are provided on the same axis as the grinding milling roll, and Forming a friction milling chamber that is disposed inside and communicates with the grinding milling chamber downstream of the grinding milling chamber, the plurality of ridges are rotated to rotate the friction milling chamber. A friction milling roll for stirring the grains, and a grain discharge port of the friction milling chamber is provided in a closed state in a state where pressure is applied, A grinding resistance valve that imparts resistance to the grains in the friction milling chamber and opens the grain discharge port with an opening corresponding to the pressing force of the grains in the friction milling chamber; Milling equipment. 2. A grain feeding cylinder which is cylindrical and is provided between the grinding grain milling cylinder and the friction grain milling cylinder, and has a shaft-shaped spiral feeding spiral formed on the outer peripheral surface. The grinding mill roll and the friction milling roll are provided on the same axis as the grinding mill roll and the friction milling roll, and are arranged inside the grain feeding cylinder and the downstream side of the grinding grain chamber between the grain feeding cylinder and the grinding mill. Forming a grain-feeding chamber communicating with the upstream side of the friction milling chamber, wherein the grain-feeding spiral rotates the grain-feeding roll to convey the grains in the grain-feeding chamber downward. The grinding friction milling device according to claim 1, wherein