KR102059599B1 - Grain grinding equipment - Google Patents

Abstract

The present invention relates to a grain grinding apparatus, and more particularly, to an apparatus for grinding and sorting grains such as barley more efficiently. The grain grinding apparatus comprises: a cylindrical conveying roller having a grain moving guide protruding in an oblique direction on a side surface of a cylinder; a cylindrical grinding roller coupled to one end of the conveying roller and grinding conveyed grain; a filtering cover disposed to face the side of the grinding roller and having a plurality of discharge holes for filtering the grinded grain; a case having a grain feeding hopper and a grain discharge outlet for discharging the grinded grain, and embedding the conveying roller, the grinding roller, and the filtering cover.

Description

Grain grinding equipment

The present invention relates to a grain grinding device, and more particularly, to an apparatus for grinding and sorting grains such as barley more efficiently.

Patent Invention 001 relates to a grain grinding device, which includes an inner surface of an opening and closing plate for installing a rotating grinding plate connected to a motor with a mesh network outside in a grinding chamber of a grinding body fixed to an upper part of a frame and opening and closing the grinding chamber of the grinding body. The fixed grinding plate is fixed to, but the front center of the opening and closing plate to form a transfer pipe having a transfer screw to connect the hopper and the air suction pipe in order to install the upper portion of the transfer pipe from the front, grain through the low hopper It is possible to easily supply a large amount of work, and in particular, when the suction force is applied due to the rotation of the rotary grinding plate for grain grinding, a large amount of air having a high flow rate can be continuously sucked through the air suction tube having the inclined plate. Grinding of water-containing grains or Aaronia containing large amounts of sugar Provides that even when available effects.

 Patent invention 002 relates to a grain grinding device, more specifically a hopper to which the grain to be crushed; Located at the bottom of the hopper, the supply control unit for adjusting the input amount of grain falling from the hopper into the crushing unit uniformly; Located in the lower portion of the supply control unit, a grinding unit for rotating the grain input from the supply control unit to be broken down as the impeller in the form of a disc formed with a plurality of grinding pins protruding therein rotates; An outlet part extending from one side of the pulverization part and discharging the grain powder pulverized in the pulverization part to the outside; And a control unit for controlling the rotational speed of the impeller rotating for the grinding of grains and the amount of grinding for the grains of the supply control unit. As described above, according to the grain grinding device according to the present invention, the grains are ground in a dry state, so that the amount of milling can be more precisely controlled compared to the method of milling in a wet state, and fine grains can be ground. It provides an effect that can further improve the food processability of grain.

Patent invention 003 is an invention for a grain grinding mixer, and the present invention is an invention for a grain grinding mixer capable of pulverizing grains to a certain size and evenly mixing various kinds of grains in a constant amount. Specifically, a plurality is formed, the storage unit for accommodating the grain by classification, the storage unit is in communication with the storage unit, the grinding unit for grinding various types of grains, the supply unit is formed on one side of the grinding unit, supplying the crushed grains, the It provides a main configuration including a mixing unit for mixing the milled grains supplied from the supply unit.

Patent invention 004 relates to an apparatus for pulverizing a pulverized product, which will be described in more detail, wherein the dried grain or algae (hereinafter referred to as `` pulverized material '') is composed of a plurality of blades, which are rotated by a rotating shaft. A plurality of fixed grinding blades consisting of a plurality of rotary grinding blades and a plurality of blades inside the housing of the grinding portion can efficiently grind a large amount of the pulverized material, and can easily collect the pulverized pulverized material using a blower. Disclosed is a technical field relating to grain and seaweed grinding devices. In addition, the present invention can increase the strength of the rotary grinding blades and the fixed grinding blade to obtain the effect of less failure, and can prevent the grinding of the pulverized material on the rotary shaft by a single rotary shaft, as well as a large amount of crushed powder By using a plurality of rotary grinding blades and a fixed grinding blade can be effectively crushed, thereby reducing the cost of grinding and can be easily collected by using a blower Provide effect.

KR 10-2019-0064793 A (published June 11, 2019) KR 20-0488169 Y1 (Registration date Dec. 17, 2018) KR 10-1876270 B1 (Registration date 03 Jul 2018) KR 10-2017-0045015 A (published April 26, 2017)

The problem to be solved by the present invention is to provide a grain grinding device for grinding the grain more effectively by limiting, adding or specifying a new element to the existing configuration.

The present invention is an invention for a grain grinding device, in particular a cylindrical shape, the transport roller protruding the guide for grain movement in the diagonal direction on the side surface of the cylinder; A grinding roller which has a cylindrical shape and is fastened to one end of the conveying roller to grind the conveyed grain; A manure cover disposed to face the side of the grinding roller and having a plurality of discharge holes for filtering the ground grains; And a case having the grain input hopper and the grain discharge outlet for crushing, wherein the transfer roller, the grinding roller, and the filter cover are embedded therein.

The present invention is an invention for a grain grinding device, in the above-described invention, a rotating motor for providing a rotational driving force to the feed roller and the grinding roller; made of a configuration further comprising.

The present invention is an invention for a grain grinding device, in the above-described invention, the vibration mechanism for vibrating the mantle cover; made of a configuration further comprising.

The present invention is an invention for a grain grinding apparatus, and in the above-described invention, the heater is attached to the hopper and generates heat;

The present invention is an invention for a grain grinding device, in the above-described invention, a sensor for measuring the amount of the grain contained in the case; And a quantitative controller for adjusting the size of the space opened by the hopper, wherein the size may be adjusted according to a value measured by the sensor.

The present invention is an invention for a grain grinding device, in the above-described invention, the outlet is a grain grinding device that is open when the pressure inside the case is above a certain value.

The present invention is an invention for a grain multi-stage grinding device, the cylindrical shape, the first feed roller protruding the first guide for grain movement in the diagonal direction on the side surface of the cylinder; A first grinding roller having a cylindrical shape and fastened to one end of the first conveying roller and grinding the conveyed grain; A first filtering cover disposed to face the side of the first grinding roller and having a plurality of first discharge holes through which the ground grains are filtered; And a first case having the first hopper for grain input and the first discharge port for pulverizing the grain, and including the first feed roller, the first grinding roller, and the first filter cover. A second feed roller having a grain grinding device and a cylindrical shape, and having a second guide for moving grain in a diagonal direction on the side surface of the cylinder; A second grinding roller having a cylindrical shape and fastened to one end of the second conveying roller and grinding the conveyed grain; A second filtering cover disposed to face the side of the second grinding roller and having a plurality of second discharge holes through which the ground grains are filtered; And a second case including the second hopper for grain input and the second discharge port for pulverizing the grain, and including the second feed roller, the second grinding roller, and the second filter cover. It is composed of two grain grinding device, the first outlet and the second hopper may be connected.

The grain grinding apparatus of the present invention not only has excellent grinding efficiency, but also can be pulverized in multiple stages, thereby providing an effect of finely crushing grains.

In addition, it is possible to control the amount of grain input, and furthermore, by adopting a configuration in which the ejection opening is opened when a certain amount of crushed grains are accumulated, not only to prevent the breakdown of the grain grinding device but also to assist the circulation of the grain to block the corruption of the grain.

In addition, by adding new elements, such as a motor, a compressor and a quantitative regulator, to the components of the existing grain grinder, the grain grinding time is shortened, and the efficiency of grinding is increased.

1 is a block diagram of a grain grinding apparatus according to an embodiment of the present invention.
Figure 2 is a perspective view of the transport roller according to an embodiment of the present invention.
Figure 3 is a perspective view of the grinding roller according to an embodiment of the present invention.
4 is a perspective view of the mantle cover according to an embodiment of the present invention.
5 is a perspective view of a vibration mechanism according to an embodiment of the present invention.
6 is a block diagram of a vibration mechanism according to another embodiment of the present invention.
7 is a perspective view of a hopper according to an embodiment of the present invention.
8 is a block diagram of a grain grinding apparatus according to another embodiment of the present invention.
9 is a block diagram of a quantitative regulator according to an embodiment of the present invention.
10 is a block diagram of a quantitative regulator according to an embodiment of the present invention.
11 is a block diagram of an inclined grain grinding device according to an embodiment of the present invention.
12 is a perspective view of the outlet according to an embodiment of the present invention.
13 is a block diagram of a grain multi-mill grinding device according to an embodiment of the present invention.

Hereinafter, the most preferred embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention.

The numbers cited in the following examples are not limited to the subjects of citation, and may be applied to all the examples. Objects exhibiting the same purpose and effect as those shown in the examples correspond to equivalent substitution objects. The higher concept shown in the examples includes the lower concept objects not described.

1 is a block diagram of a grain grinding apparatus according to an embodiment of the present invention, Figure 2 is a perspective view of a feed roller according to an embodiment of the present invention, Figure 3 is a perspective view of a powder O roller according to an embodiment of the present invention 4 is a perspective view of the mantle cover according to an embodiment of the present invention, Figure 5 is a perspective view of a vibration mechanism according to an embodiment of the present invention, Figure 6 is a configuration diagram of a vibration mechanism according to another embodiment of the present invention, 7 is a perspective view of a hopper according to an embodiment of the present invention, Figure 8 is a block diagram of a grain grinding apparatus according to another embodiment of the present invention, Figure 9 is a block diagram of a quantitative regulator according to an embodiment of the present invention, 10 is a block diagram of a quantitative regulator according to an embodiment of the present invention, Figure 11 is a block diagram of an inclined grain grinding apparatus according to an embodiment of the present invention, Figure 12 is a discharge port according to an embodiment of the present invention 13 is a perspective view of a grain multi-mill grinding device according to an embodiment of the present invention It is a block diagram.

(Example 1-1) The grain grinding apparatus of the present invention has a cylindrical shape, the feed roller 100 is formed with a guide for grain movement in the diagonal direction on the side surface of the cylinder (100); Cylindrical shape, the grinding roller 200 is fastened to one end of the feed roller 100, and crushed the conveyed grain; A filtering cover 300 disposed to face the side of the grinding roller 200 and having a plurality of discharge holes 310 for filtering the crushed grains; The case 400 having the grain input hopper 410 and the pulverized discharge outlet 420, the built-in feed roller 100, the grinding roller 200 and the filter cover 300 It includes;

Grain grinding apparatus according to an embodiment of the present invention may include a transfer roller 100, grinding roller 200, filter cover 300, the case 400. The feed roller 100 has a cylindrical shape, and when the side surface of the cylinder is unfolded, a plurality of grain moving guides 110 may be formed to protrude in an oblique direction. As a result, when the feed roller 100 rotates, the grains may be moved in the longitudinal direction of the cylinder along the guide 110. Grinding roller 200 is a cylindrical configuration that is fastened to one end of the transfer roller 100, the grinding roller 200 can be crushed grain while rotating. The filter cover 300 may be disposed at a position opposite to the side surface of the grinding roller 200 while surrounding the side surface of the grinding roller 200. Grain crushed in the grinding roller 200 may pass through the discharge hole 310 formed in the filter cover (300). Since the size of the discharge hole 310 is smaller than the size of the uncrushed grain, only the sufficiently ground grain may pass through the discharge hole 310. The case 400 has a hopper 410 into which the uncrushed grains are introduced and an outlet 420 through which the crushed grains are discharged, and the transfer roller 100, the crushing roller 200, and the filter cover 300 are all provided. Can be built

(Example 1-2) In the grain grinding apparatus of the present invention, in Example 1-1, the pitch of the guide 110 may increase as the grinding roller 200 approaches.

The pitch of the grain moving guide 110 may increase or decrease closer to the grinding roller 200. This is to control the pressure by the grain by adjusting the width of the path that the grain is moved in the process of conveying the grain in the transport roller (100). The closer to the grinding roller 200, the wider the path, and the wider the path, the closer the grinding roller 200 is to the pressure due to the grains, and if the pitch decreases, the pressure will increase. This can be determined according to the needs of the user.

(Example 1-3) In the grain grinding apparatus of the present invention in Example 1-1, the grinding roller 200 may be formed in a wave form on the side.

The grinding roller 200 has a cylindrical shape and is configured to grind grains. Sides of the cylinder may be configured in parallel, of course, it may also be made in the form of a wave. Through this, it is possible to improve the mobility of the grains in the grinding roller 200, and also to change the grinding pressure applied when the grains are pulverized to more effectively crush the grains.

Example 1-4 In the grain grinding apparatus of the present invention, in Examples 1-3, the repetition period of the wave may be constant.

The side surface of the grinding roller 200 may be configured in the form of a wave. More specifically, the repetition period of the wave can be configured to be constant. Through this, it is possible to control the effect of increasing the grinding efficiency due to the mobility improvement effect or the grinding pressure fluctuation.

Example 1-5 In the grain grinding apparatus of the present invention, in Example 1-1, the size of the discharge hole 310 may decrease as it approaches the discharge port 420.

The discharge hole 310 is an open space formed in the filter cover 300, and is a space through which the crushed grain can pass. When the grain is crushed in the grinding roller 200 to reduce the size of the grain, the crushed grain having a smaller size than the discharge hole 310 may pass. Further, the size of the discharge hole 310 may be configured to be larger or smaller as the discharge hole 310 is located closer to the discharge port 420. This allows the selective selection of ground grains of the desired size.

(Example 2-1) In the grain grinding apparatus of the present invention, in Example 1-1, the rotary motor 500 for providing a rotational driving force to the feed roller 100 and the grinding roller 200; It may include.

In order for the grain to be moved by the feed roller 100 or the grain is crushed by the grinding roller 200, the feed roller 100 and the grinding roller 200 should be rotated. To this end, the grain grinding device may further include a rotating motor 500.

(Example 2-2) In the grain grinding apparatus of the present invention in Example 2-1, the feed roller 100 and the grinding roller 200 is rotated by one rotating shaft 530, the rotation driving force The silver may be transmitted from the rotating motor 500 by the belt 510 and the pulley 520.

The rotational driving force generated by the rotating motor 500 may be transmitted to the feed roller 100 and the grinding roller 200 through the belt 510 and the pulley 520. The pulley 520 may be an axial wheel made to hang the belt 510 to transmit exercise or force. Grooves can be sold to increase the friction with the belt 510 to prevent slippage. The pulley 520 may be made of cast iron or alloy steel, and may be made of wood to reduce weight. In addition, the rotating shaft 530 of the feed roller 100 and the grinding roller 200 may be shared with each other. Therefore, it is possible to rotate the feed roller 100 and the grinding roller 200 at the same time using one rotary motor 500.

(Example 2-3) In the grain grinding apparatus of the present invention in Example 2-1, the rotation motor 500 is the strength of the rotational driving force according to the amount of the grain contained in the case 400 Can be adjusted.

The intensity of the rotational driving force may be adjusted by manually adjusting the rotation motor 500, as well as the strength of the rotational driving force may be automatically adjusted according to the amount of grain included in the case 400. In order to measure the amount of grain may be provided with a measuring device for measuring the weight, or measuring the empty space.

Example 3-1 The grain grinding apparatus of the present invention may include a vibrating mechanism for vibrating the filter cover 300 in Example 1-1.

It may vibrate the filter cover 300 can be crushed grains. To this end, it may further include a vibration mechanism. The reason for vibrating the filter cover 300 is to prevent or solve a phenomenon in which the pulverized grain is inserted into the discharge hole 310 and the space opened by the discharge hole 310 is blocked. In the grain grinding apparatus of the present invention that is automatically operated, clogging of the discharge hole 310 formed in the filter cover 300 may not only reduce the grinding efficiency of grain, but may also cause mechanical failure. To this end, by vibrating the filter cover 300 it can be prevented or quickly resolved.

(Example 3-2) The grain grinding apparatus of the present invention is the embodiment 3-1, wherein the vibration mechanism is a vibrator 320 attached to the filter cover 300; And a power supply for inputting a voltage to the vibrator.

Vibration mechanism for vibrating the filter cover 300 may be composed of a vibrator 320 and a power supply. The vibrator 320 may be directly attached to the filter cover 300. Since the vibrator 320 is operated when a voltage is input, the vibrator 320 may receive a voltage from a power supply. The power supply can be configured to input voltage to the vibrator, such as a generator, a power supply, or simply a battery.

(Embodiment 3-3) In the grain grinding apparatus of the present invention, in Example 3-1, the vibration mechanism includes a vibration motor 330 for causing vibration; It may be made of; a conductor 340 for transmitting the vibration to the filter cover (300).

Vibration mechanism for vibrating the filter cover 300 may be composed of a vibration motor 330 and the conductor 340. The vibration motor 330 is not directly attached to the filter cover 300. The vibration generated from the vibration motor 330 may be transmitted to the filter cover 300 through the conductor 340. Conductor 340 may be made of a rigid body rather than a fluid. The conductor 340 may physically connect the vibration motor 330 and the filter cover 300. Connection positions of the vibration motor 330, the conductor 340, and the filter cover 300 may be determined according to the vibration direction required for the filter cover 300.

Example 4-1 The grain grinding apparatus of the present invention may further include a drying heater 415 attached to the hopper 410 and generating heat in Example 1-1.

If the grain contains moisture, the grinding efficiency can be reduced. In order to prevent this, a drying heater 415 generating heat may be attached to an outer surface of the hopper 410 to remove moisture of grains entering the case 400. In addition, it is not directly attached to the hopper 410, it is possible to transfer heat to the grains contained in the hopper 410 using a halogen lamp at a long distance.

(Example 4-2) The grain grinding apparatus of the present invention is the compressor of Example 1-1, which produces compressed air; A valve 610 for controlling the flow of air, and a nozzle 620 for injecting the air into the case 400; may further include.

The compressor 600 may further include a compressor 600, a valve 610, and a nozzle 620 to assist the movement of the grain or to remove the grain remaining inside the case 400. The compressor 600 may compress air to generate a high air pressure. The valve 610 adjusts the flow of air, and the nozzle 620 may inject high air pressure air into the case 400.

Example 4-3 In the grain grinding apparatus of the present invention, in Example 4-2, the valve 610 may be opened and closed at a predetermined cycle.

Not only can the valve 610 be manually adjusted, but the valve 610 can be automatically opened and closed at regular intervals. This helps to support the movement of grain more efficiently and prevents the grain from accumulating and accumulating for a long time in a confined space.

(Example 5-1) The grain grinding apparatus of the present invention, in Example 1-1, comprises: a sensor 430 for measuring the amount of the grain contained in the case 400; And a quantitative controller 440 for adjusting the size of the space opened by the hopper 410, and the size may be adjusted according to a value measured by the sensor 430.

When the grain is excessively large inside the case 400, not only the grinding efficiency may be reduced, but also the resistance increases in the rotation of the transfer roller 100 or the grinding roller 200, so that the rotation of the motor 500 The load may increase excessively. Excessive rotational resistance imposed on the rotating motor 500 may cause a defect in the motor. In order to prevent this, it is necessary to adjust the amount of grain inside the case 400. To this end, the sensor 430 for measuring the amount of grain, the hopper 410 may be provided with a quantitative controller 440 for adjusting the size of the space opened into the case 400. In addition, the size of the space opened into the case 400 by the hopper 410 may be adjusted according to a value measured by the sensor 430. For example, if the grain in the measurement result case 400 of the sensor exceeds a predetermined reference value quantitative controller 440 may reduce the size of the space opened by the hopper 410.

Example 5-2 In the grain grinding apparatus of the present invention, in Example 1-1, the grain grinding apparatus may be inclined with respect to the ground.

In order to increase the mobility of the grain inside the case 400, the grain grinding device may be disposed to be inclined at a predetermined angle with respect to the ground. Gravity may not be sufficiently crushed due to increased mobility due to gravity, so this can be taken into account when determining the degree of tilt.

(Example 6-1) In the grain grinding apparatus of the present invention, in Example 1-1, the outlet 420 may be opened when the internal pressure of the case 400 is greater than or equal to a specific value.

When the grain introduced into the hopper 410 is pulverized and the case 400 is sufficiently filled, the pressure inside the case 400 increases. When the increased pressure is above a certain value, the outlet 420 may be opened so that the ground grains may be discharged out of the grain grinder.

(Example 6-2) In the grain grinding apparatus of the present invention, in Example 6-1, the discharge port 420 is discharge door 422 is rotated to open and close outside the case 400 with a hinge axis; A weight connecting rod 424 in the form of a rod protruding from the outer surface of the discharge door 422; Weight weight 423 is fastened to the weight connecting rod 424, and determines the specific value; .

When the crushed grains are sufficient, and the pressure inside the case 400 is greater than a specific value, the outlet 420 may be opened. The outlet 420 is a rod-shaped weight connecting rod 424 protruding from the outer surface of the discharge door 422 and the discharge door 422 that can be opened and closed by rotating the outside of the case 400 around the hinge 421 A weight 425 fastened to the weight connecting rod 424 may be provided. The weight 423 may be configured in a donut shape so as to be fastened to the weight connecting rod 424 in the form of a rod. When the weight of the weight 425 fastened to the weight connecting rod 424 increases or the total weight of the weight 423 increases due to the increase in the number of weight 423, the discharge door 422 is a condition that opens The specific value of the pressure inside the case 400 increases. These configurations can automatically open and close the discharge door 422 without requiring extra energy.

(Example 7-1) The grain multi-stage grinding device of the present invention has a cylindrical shape, a first feed roller having a first guide for moving grain in an oblique direction on the side surface of the cylinder; A first grinding roller having a cylindrical shape and fastened to one end of the first conveying roller and grinding the conveyed grain; A first filtering cover disposed to face the side of the first grinding roller and having a plurality of first discharge holes through which the ground grains are filtered; And a first case having the first hopper for grain input and the first discharge port for pulverizing the grain, and including the first feed roller, the first grinding roller, and the first filter cover. A second feed roller having a grain grinding device and a cylindrical shape, and having a second guide for moving grain in a diagonal direction on the side surface of the cylinder; A second grinding roller having a cylindrical shape and fastened to one end of the second conveying roller and grinding the conveyed grain; A second filtering cover disposed to face the side of the second grinding roller and having a plurality of second discharge holes through which the ground grains are filtered; And a second case including the second hopper for grain input and the second discharge port for pulverizing the grain, and including the second feed roller, the second grinding roller, and the second filter cover. A grain multi-stage grinding device comprising a two grain grinding device, the first outlet and the second hopper is connected.

The grains may be ground through the first grain mill, and then again in the second grain mill. The positional relationship between the first grain grinder and the second grain grinder may be such that the first hopper and the second hopper are disposed at the same height so that the two grain grinders are disposed horizontally with each other. In addition, the second hopper may be disposed at the height of the first outlet so that the first grain grinder and the second grain grinder may be disposed perpendicular to each other. The positional relationship between the first grain grinder and the second grain grinder may be determined in consideration of the conditions of the space where the grain multi-mill grinder is to be installed, the fluidity of the ground grains, and the like. In addition, each of the first grain grinding apparatus and the second grain grinding apparatus may employ all the constitutions and features defined or added in <Example 1-1> to <Example 6-2>.

Example 7-2 In the grain multi-stage grinding device of the present invention, in Example 7-1, the first feed roller, the first grinding roller, the second feed roller, and the second grinding roller are one rotating shaft. Grain multi-mill grinder rotated by.

The first conveying roller, the first grinding roller, the second conveying roller, and the second grinding roller are operated while rotating. Rotation is performed by the driving force generated by the rotating motor 500. Here, the above four configurations can be rotated by one rotating shaft. This is to minimize the difficulty in realizing grain multi-stage grinding device by reducing the energy required and simplifying the structural design.

Although the above-described embodiments have been described by a limited embodiment, various modifications and variations are possible from those described by those skilled in the art. For example, the described techniques may be performed in a different order than the described method, and / or components of the described systems, structures, devices, circuits, etc. may be combined or combined in a different manner than the described method, or other components. Or even if replaced or substituted by equivalents, an appropriate result can be achieved. Therefore, other embodiments and equivalents to the claims also fall within the scope of the claims that follow.

100: feed roller 110: guide
200: grinding roller 300: filter cover
310: discharge hole 400: case
410: hopper 420: outlet
423: Weight 424: Weight connector
500: rotating motor 600: compressor

Claims (7)

A feed roller 100 having a cylindrical shape and having a grain movement guide 110 protruding in an oblique direction on a side surface of the cylinder;
Cylindrical shape, the grinding roller 200 is fastened to one end of the feed roller 100, and crushed the conveyed grain;
A filtering cover 300 disposed to face the side of the grinding roller 200 and having a plurality of discharge holes 310 for filtering the crushed grains;
A case having the grain input hopper 410 and the pulverized discharge outlet 420, 420, and the feed roller 100, the grinding roller 200 and the filter cover 300 is built 400;
The pitch of the guide 110 is increased closer to the grinding roller 200,
The size of the discharge hole 310 is increased closer to the discharge port 420,
A drying heater 415 attached to the hopper 410 and generating heat;
A compressor 600 for producing compressed air;
And a valve (610) for controlling the flow of air; and a nozzle (620) for injecting the air into the case (400).
The method according to claim 1,
And a rotation motor for providing a rotational driving force to the feed roller 100 and the grinding roller 200.
The method according to claim 1,
Vibration mechanism for vibrating the filter cover 300; grains further comprising a.
delete The method according to claim 1,
A sensor 430 for measuring the amount of grain contained in the case 400; and
And a quantitative regulator (440) (420) for adjusting the size of the space opened by the hopper (410), wherein the size is adjusted according to the value measured by the sensor (430).
The method according to claim 1,
The outlet 420 is a grain grinding device that is opened when the pressure in the case 400 is above a certain value.
A first feed roller having a cylindrical shape and having a first guide for moving grain in a diagonal direction on a side surface of the cylinder;
A first grinding roller having a cylindrical shape and fastened to one end of the first conveying roller and grinding the conveyed grain;
A first filtering cover disposed to face the side of the first grinding roller and having a plurality of first discharge holes through which the ground grains are filtered; And a first case having the first hopper for grain input and the first discharge port for pulverizing the grain, and including the first feed roller, the first grinding roller, and the first filter cover. A second feed roller having a grain grinding device and a cylindrical shape, and having a second guide for moving grain in a diagonal direction on the side surface of the cylinder;
A second grinding roller having a cylindrical shape and fastened to one end of the second conveying roller and grinding the conveyed grain;
A second filtering cover disposed to face the side of the second grinding roller and having a plurality of second discharge holes through which the ground grains are filtered; And a second case including the second hopper for grain input and the second discharge port for pulverizing the grain, and including the second feed roller, the second grinding roller, and the second filter cover. Consists of two grain grinding device, the first outlet and the second hopper is connected,
The pitches of the first and second guides increase as they approach the first and second grinding rollers, respectively.
The size of the first and second discharge holes increases as the first and second discharge holes are closer to each other.
A compressor for producing compressed air;
And a nozzle for controlling the flow of air, and a nozzle for injecting the air into the first and second cases, respectively.

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