KR100664675B1 - Hull cutting type rice cleaning machine - Google Patents

Abstract

A hull cutting-type rice polishing machine is provided to facilitate assembly work by fitting keys of a spacer and a cutter ring into key grooves formed on four sides of the outer periphery of a hollow shaft. The hull cutting-type rice polishing machine is composed of a hollow shaft disposed in the front side of a screw conveyor and provided with key grooves(120) and vent holes(12) formed on four sides of the outer periphery in turn; a cutter ring(14) having a support piece(140) dividing a predetermined space extended to the vent hole, a key(142) fitted into the key groove and integrally formed on a predetermined spot of an inner peripheral surface, and a cutting blade(146) cutting the hulls from the brown rice and a circular arc-shaped groove(144) forcibly sending the brown rice, which are formed on the outer peripheral surface in turn; a spacer(16) formed smaller than a radius of the cutter ring and composed of a support piece(160) dividing a predetermined space extended to the vent hole, a key(162) fitted into the key groove and integrally formed on a predetermined spot of an inner peripheral surface, and obtuse angle parts(164) continuously formed on the outer peripheral surface in countless numbers to cut the hulls from the brown rice, wherein one side of the outer periphery of the spacer is opened by cutting to eject the wind passing through the vent hole toward the outer periphery of the hollow shaft; and a baffle ring positioned in the end of the hollow shaft at a predetermined gap to reduce the discharge speed of the rice by a baffle formed in the center and legs extended to the outer periphery.

Description

Hull cutting type rice cleaning machine}

BRIEF DESCRIPTION OF THE DRAWINGS The side cross-sectional view which shows the structure of the rice cleaning machine concerning this invention.

FIG. 2 is an enlarged perspective view showing an example related to the baffle shown in FIG. 1. FIG.

3 is a side cross-sectional view showing another example of the baffle.

4 is a partially enlarged perspective view for explaining the arrangement relationship between the hollow shaft, the cutter ring, and the spacer shown in FIG. 1;

5 is a cross-sectional view taken along the line AA of FIG. 1.

<Description of the symbols for the main parts of the drawings>

2: body 4: hopper

6: screw conveyor 8: hollow shaft

10: hollow journal portion 12: ventilation holes

14: cutter ring 16: spacer

18: Screen 20: Ventilation Duct

22: Baffle 24: Shim

26: pressure adjusting plate 28: adjusting bolt

30: suppression spring 32: hanger

34: Connecting bolt 36: Fixing bolt

38: Balance spring 40: Pulley

120: key groove 140, 160: support

142, 162: Key 144: arcuate groove

146: cutting edge 164: obtuse portion

166: notch 220: baffle

222: leg 223: home

224: set screw

Korean Patent Publication No. 1987-0002125, Korean Patent Publication No. 2005-0047487, Japanese Patent Publication No. 2002-45711, Japanese Patent Registration No. 3379012, Japanese Patent Registration No. 3700972,

TECHNICAL FIELD The present invention relates to a rice scouring machine, and more particularly, to a bran-cutting rice scouring machine which is prepared by cutting the bran from the separated brown rice.

Brown rice is processed through a milling process that separates bran from brown rice, which has been separated from rice husk.

As a general method of grinding, a grinding method of rubbing the chaff by rubbing the abrasive stone and a friction method of separating the chaff from the blade formed in the axial direction by rubbing the brown rice into the metal net are known. Korean Patent Publication No. 1987-0002125 The arc discloses a grinding-type rice polisher configured to press the brown rice with a screw conveyor to separate the bran due to friction between the surface of the rotating abrasive body and the screen surrounding it.

As another example of the above-described milling method, the rice mills disclosed in Japanese Laid-Open Patent Publication Nos. 2002-45711, 3,790, and 3700972 are fed with brown rice by a screw conveyor to be brought into contact with a rotating cutting body. The milling machine of the cutting method of cutting off is disclosed.

Grinding type grinding machine has the advantage of high milling efficiency, but because of the high pressure applied to the brown rice it is evaluated to generate a lot of cheap.

The cutting method that passes the brown rice between the rotating cuttings to cut the rice is theoretically applied to the rice without excessive pressure, so there is almost no waste, and there is no change in the temperature or humidity of the processing atmosphere during milling, thus ensuring the quality of the rice. It is estimated to become.

However, rotary cutting bodies have the following problems in practical use.

As the rotary cutting body has an outer shape in which the rotating plate is spirally extended on the rotating shaft, the machining is quite difficult and complicated. In addition, since the surface of the rotating plate must be formed with cutting holes or triangular protrusions for scraping the bran from the brown rice, it is not easy to manufacture such a structure in reality.

Korean Laid-Open Patent Publication No. 2005-0047487 is attracting attention in that it presents a direction to simplify the manufacture of the rotating plate.

The apparatus disclosed herein shows a simple structure in which the assembly is completed by alternately inserting a cutting plate in the form of a thin plate together with a spacer in a central axis coaxial with a screw conveyor.

However, the disclosed device is designed to suction and remove the bran or rice bran, which is separated from the brown rice, during the milling process by means of a duct provided on the outside. Since they are arranged in the same shape on the outside, even if a large number of ventilation holes are formed in the plate surface of the cutting wheel, the negative pressure of the duct cannot reach the corner of the cutting wheel, and thus the corner between the central axis and the cutting wheel. There is a flaw that the rice bran sticks to it and is deposited. In addition, the shape of the cutting rotary plate is a rounded cutting edge form.

The problem that prevents the commercialization of the above-mentioned cutting rice mill is that the frictional force generated when the rice comes into contact with the rotating mill is smaller than that of other rice mills, but is discharged to the outside in the cutting space so that the rice and the friction with the screen are caused by the friction. It is a frequent case that the temperature rises causing deterioration.

In order to solve this problem, a spring pressure control plate is installed at the discharge port of the rice, and the elastic force of the spring can be adjusted, thereby controlling the discharge speed of the rice so that strong friction with the screen is not generated in the cutting space. have.

As described above, the structure for suppressing the pressure regulating plate with a spring is a means employed in a grinding method or a friction type polishing machine. In the grinding method or the friction method, the degree of change in degree due to the discharge rate of the rice is insignificant. By adjusting the elastic force of the spring can adjust the degree of brown rice.

However, in the cutting-type rice milling machine, the time and the number of times that the brown rice contacts the rotating cutting body immediately affect the milling process, so it appears as a sensitive degree change. There is no choice but to. However, if the elastic force is hardened to ensure a certain milling of brown rice, in this case, the residence time of the brown rice inside the rice milling machine is long, causing friction with the screen, so that the temperature of the rice naturally increases, causing deterioration.

As a result, the bran-cut rice mill has the desirable possibility that it can be transformed into a complete rice which is separated only from brown rice, but it is still not commercialized.

An object of the present invention is a type of rice crusher which removes bran from brown rice, which can be easily and easily assembled and produced, and bran and rice bran generated during the cutting process can be sucked and discharged completely without being deposited on the passage. It is intended to provide a bran-cut rice mill with a structure that does not cause rice to deteriorate.

Another object of the present invention is to provide a bran-cut rice milling machine that is configured to efficiently cut the bran from brown rice to be processed into complete rice through one milling.

According to the present invention for realizing the above object, a hopper for supplying brown rice is disposed on an outer side of the main body, and a screw conveyor for feeding the brown rice is rotatably disposed inside the main body, and on the outer circumference of the shaft extending forward. In the bran-cutting type rice grinder, which has a structure in which a myriad of cutter rings are rotated to cut and cut the bran of brown rice, the hollow shaft is disposed on the front side of the screw conveyor and alternately has a key groove and an air vent formed on the outer circumference, leading to the vent hole. A support piece for partitioning a predetermined space and a key fitted into the key groove are integrally formed at a predetermined portion of the inner circumference, and an arcuate groove provided as a cutting blade for cutting the bran from the brown rice and the conveying passage of the brown rice alternately on the outer circumferential surface. The cutter ring is formed in equal parts, the radius is smaller than the cutter ring, the ventilation The support piece for partitioning a certain space leading to the key and the key fitted into the key groove are integrally formed at a predetermined portion on the inner circumference, and the outer circumference has an infinite number of obtuse portions for cutting the bran from the brown rice, and one side of the outer circumference thereof. Opened at the cutting edge to release the wind through the vent in the outer circumferential direction of the hollow shaft, and positioned at a predetermined distance to the end of the hollow shaft, the baffle of the center and the legs extending to the outer circumference to reduce the discharge rate of rice Becomes a configuration with a baffle to be fitted.

In addition, the rice cleaning machine of the present invention is formed by dividing the cutter ring and the spacer into two or three kinds of thin or thick standards, and selecting and arranging one or two or three kinds according to the standard. You can make it a configuration.

In addition, the rice cleaning machine of the present invention has a groove extending in the axial direction on the inner circumferential surface and the legs extending from the center baffle is slidably arranged in the groove and the legs are positioned fixed by a set screw screwed from the outside. The baffle can be configured by the configuration.

When the characteristic configuration of the present invention will be described according to a preferred embodiment according to the accompanying drawings as follows.

1 is a side cross-sectional view showing the main configuration of the present invention, wherein the cabinet-shaped main body 2 is provided with a hopper 4 for supplying brown rice to one side of the outside, and the brown rice introduced into the inside of the hopper 4 below. The screw conveyor 6 which rotates the pressure is rotatably arranged, and the output side of the screw conveyor 6 is the hollow journal part which extends to the hollow shaft 8, and the opposite direction to the outside of the main body 2 ( 10) are each coaxially connected.

In the predetermined position on the outer circumferential surface of the hollow shaft 8, a vent hole 12 extending in the axial direction is formed, and the cutter ring 14 and the spacer ring 16 are repeatedly inserted alternately thereon, The circumference | surroundings are enclosed with the screen 18, and form the predetermined space of a predetermined space.
The diameter of the cutter ring 14 and the spacer ring 16 is set to a suitable size in the range of 30 ~ 300mm.

On the other hand, the space around the outer circumference of the screen 18 is connected to the ventilation duct 20, so that the bran or rice bran, which is cut from the brown rice and filtered through the screen 18, escapes through the suction airflow.

The baffle ring 22 is disposed at the end of the hollow shaft 8 so that the discharged amount of rice to be maintained is kept constant, but several fitting rings 24 are arranged at a predetermined distance from the hollow shaft 8. The baffle ring 22 is attached to the outside of the baffle ring, and the pressure control plate 26 that is pressed against the spring is automatically opened and closed.

As shown in FIG. 2, the baffle ring 22 has a circular baffle 220 located at an inner central portion thereof, and three legs 222 are deployed in a three-direction positive direction, and the fitting ring 24 is connected thereto. Is the same diameter as the baffle ring 22, it is also possible to adjust the distance between the hollow shaft 8 and the baffle ring 22 through the thickness.

The baffle ring 22 is not limited to the above structure, and as shown in FIG. 3, a groove 223 is formed on the inner circumferential surface of the inner circumferential surface to which the leg 222 extending in the positive three directions is inserted. 222 can be formed to adjust the predetermined distance to the hollow shaft 8 without the fitting ring 24 if the position is moved along the groove 223 and then tightened with the set screw 224 to maintain the position. have.

Therefore, in this example, the three legs 222 must be formed to a significant thickness that corresponds to the distance needed to adjust the gap between the hollow shaft 8 and the baffle 220.
In addition, the baffle ring 22, the baffle 220, and the three legs extending from the baffle 220 should also be set in accordance with the diameter of the cutter ring 14 and the spacer ring 16 in a radius of 30 to 300 mm. do.

On the other hand, the pressure control plate 26 is configured to be integrally connected to the hanger 32 pressed by the pressure spring 30 of the adjustment bolt 28 through the connecting bolt 34, and the hanger 32 is As the upper side is penetrated by the fixing bolt 36 and suspended on the main body 2, the fixing bolt 36 is provided with a balance spring 38 for generating an elastic force in the opposite direction to the pressing spring 30. On the upper side of the hanger 32, the elastic force of the pressure spring 30 and the balance spring 38 are mutually opposed to each other so that the hanger 32 is always maintained in a vertical position, and thus the pressure control plate 26 is also vertical. It will open and close while maintaining posture.

The suspension structure of the pressure regulating plate 26 is also employed in a conventional rice mill.

In addition, both ends of the hollow journal portion 10 whose ends are extended to the outside of the main body 2 are rotatably supported by the bearings 37 and 39 in the same way as in the conventional rice milling machine. The driven rotation is performed by the power of a motor (not shown) transmitted through the pulley 40 mounted between the 39.
According to the structure in which one side end of the hollow journal portion 10 is supported by the bearings 37 and 39 arranged in pairs, even in a free end state in which the portion extending in the opposite outlet direction is not supported by the bearing or the like. It is possible to obtain an advantage of stably rotating driving and at the same time providing a space that is equally extended.

4 illustrates in detail the relationship between the hollow shaft 8, the cutter ring 14, and the spacer 16.

The outer surface of the hollow shaft 12 has the key groove 120 engraved along the axial direction in an all-round arrangement.

In contrast, the cutter ring 14 forms the supporting pieces 140 at four inner circumferential surfaces corresponding to the key grooves 120, and the key 142 protrudes only at the two supporting pieces 140 facing each other. Formed.

These keys 142 serve to fix the position of the key of the hollow shaft 8 to the groove 120 as shown, wherein the support piece 140 without the key 142 is only a key groove 120 It is just placed across the top of.

As the circular circumferential groove 144 is repeatedly formed at regular intervals on the outer circumferential surface of the cutter ring 12, a plurality of cutting edges 146 are formed in equal parts over a predetermined radius range.

On the other hand, as for the spacer 16, the support piece 160 protrudes in four inner peripheral surfaces corresponding to the said key groove 120, and the key 162 protrudes only in the two support pieces 160 which oppose. The basic structure of the inner circumferential surface is formed in the same manner as the cutter ring 12.

However, the outer circumferential surface has a structure in which the obtuse portions 164 are continuously formed in the radial range smaller than the cutter ring 14, and the outer circumferential surface is opened through the notch 166.

This cutout 166 is a passage that follows the vent 12 and is sucked in the direction of the arrow depicted as the central passage of the hollow journal portion 10 to blow out the wind supplied through the hollow shaft 8.

Therefore, when the spacer 16 is fitted to the outer circumference of the hollow shaft 8, it is preferable that the spacer 16 be hermetically spread over the entire outer circumference of the hollow shaft 8 by repositioning and assembling by 90 degrees.

Since the thickness of the cutter ring 14 and the spacer 16 greatly influences the cutting efficiency, it is preferable to arrange the cutter ring 14 and the spacer 16 so that the thickness can be adjusted.

To this end, the thickness of the cutter ring 14 and the spacer 16 may be divided into two or three types having thin or thick dimensions, and several layers may be overlapped and arranged in accordance with the scale of the rice polisher to adjust the thickness of the cutter ring 14 and the spacer 16.

FIG. 5 is a cross-sectional view showing a state in which the cutter ring 14 and the spacer 16 fitted to the outer circumference of the hollow shaft 8 are arranged so as to overlap concentrically.

Since the cutter ring 14 and the spacer 16 are arranged at predetermined intervals by the support pieces 140 and 160 at the outer circumference of the hollow shaft 8, the vent hole through the inside of the hollow shaft 8 is provided. The wind supplied to the (12) is blown out through the notch 166 of the spacer 16 without being disturbed to discharge the bran or rice bran cut from the brown rice out of the screen (16).

Therefore, when the spacer 16 is arranged such that the position of the notch 166 is sequentially switched at 90 degrees from the outer circumference of the hollow shaft 8, unlike the cutter ring 14, the blowing effect through the notch 166 is achieved. Can be further improved.

Referring to FIG. 1, the milling action according to the present invention is fed to the hollow shaft 8 by the screw conveyor 6.

The pressurized brown rice begins to fill with the potting space surrounded by the screen 16, where it is rubbed in contact with the inner circumferential surface of the screen 16, or the cutting edge 146 or spacer 16 of the cutter ring 14 The bran is scraped off by the obtuse portion 164 of the sludge, and the brown rice is pushed through the arcuate groove 144 of the cutter ring 14 by the continuous feeding of the screw conveyor 6 to the hollow shaft 8. It fills up throughout the axial direction.

In this state, the brown rice is cut while rubbing against the inner circumferential surface of the screen 16 or in contact with the cutting edge 146 of the cutter ring 14 or the obtuse portion 164 of the spacer 16. Is done through.

In addition, the wind supplied to the center of the hollow shaft (8) during the process of inverting the bran in the brown rice is blown out through the notch 166 of the spacer 16 from the ventilation hole 12, the bran generated during the milling The back is discharged out of the screen 18 and led to the duct 20.

In addition, the peeled rice passes through the outer circumference of the hollow shaft 8 and comes into contact with the baffle ring 22 and hits the baffle 220 and the leg 222 at the center thereof, thereby causing a discharge obstacle. The brown rice feeding speed in the cutting space surrounded by the water is decelerated.

The deterioration of the rice in the rice discharge deceleration action by the baffle 22 is prevented. That is, in the rice mill of the cutting method, the temperature rise of brown rice is caused by strong friction with the screen 16. In the present invention, since the milled rice is discharged while being decelerated by the baffle 22, the mill is surrounded by the screen 16. The brown rice feeding speed in space is maintained at a slow speed so that no friction is generated so that the temperature of the rice does not increase and deteriorate.

The rice thus milled is passed through the baffle 22 and then discharged while pushing the pressure control plate 26 as in a conventional rice mill.

However, in the present invention, the pressure spring 30 and the balance spring 38 exert opposing pressure, so that the pressure control plate 26 always opens while maintaining the vertical posture, and adjusts the degree of the rice Since the pressure control plate 26 is suppressed, the retention of rice does not occur.

Therefore, according to the present invention, the rice does not cause strong friction with the screen, so that the problem of deterioration due to temperature rise does not occur.

The rice cleaning machine of the present invention as described above has the following advantages and advantages.

As a type of rice mill that cuts rice bran with a rotating cutter ring, it is easy to assemble because it is assembled with the key of the cutter ring and the spacer by key grooves carved on the outer circumference of the hollow shaft.

In particular, since the cutter ring and the spacer are easy to machine, the manufacturing cost is significantly lower.

In addition, since the cutter ring and the spacer contain a myriad of cutting blades of an optimal shape for chamfering brown rice bran has the advantage that the milling of brown rice is carried out completely and quickly.

A baffle is provided at the end of the hollow shaft to reduce the discharge rate of the rice, so that no friction occurs between the brown rice and the screen in the cutting space, thereby increasing the temperature of the rice.

By cutting the spacers, it is possible to blow out the corners of the hollow shaft so that the chaff and rice bran generated during the cutting process can be completely discharged to the outside.

Since the cutter ring has an arcuate groove in addition to the cutting blade, the feeding of the brown rice by the screw conveyor can be performed without clogging.

By dividing the thickness of the cutter ring and spacer into two or three types of thin or thick dimensions, and by selecting and arranging them appropriately, the design flexibility of the cutter ring and the spacer can be expanded to simplify the design of the rice mill. .

Claims (3)

A hopper for supplying brown rice is disposed on an outer side of the main body, and a screw conveyor for feeding the brown rice is rotatably disposed inside the main body, and a number of cutter rings disposed on the outer periphery of the shaft extending forwardly rotate the brown rice. In the bran cutting type rice grinder with the structure which cuts and cuts the bran, A hollow shaft disposed toward the front side of the screw conveyor and alternately formed with key grooves and ventilation holes on outer circumferences thereof; A support piece for partitioning a predetermined space leading to the ventilation hole and the key inserted into the groove are integrally formed at a predetermined portion of the inner circumference, and an arc-shaped groove provided as a cutting blade for cutting the bran from the brown rice and the conveying passage of the brown rice Cutter rings alternately formed on the outer circumferential surface; It has a smaller radius than the cutter ring, and the support piece for partitioning a predetermined space leading to the ventilation hole and the key fitted into the key groove are integrally formed at a predetermined portion of the inner circumferential surface, and an obtuse portion for cutting the chaff from the brown rice on the outer circumferential surface thereof. A spacer which is formed innumerably continuous and whose one outer circumference is opened by notching to blow out the wind through the vent in the outer circumferential direction of the hollow shaft; A baffle ring positioned at an end portion of the hollow shaft at a predetermined interval, the baffle ring having a center baffle and a leg extending outwardly to reduce the discharge rate of rice; The bran-cut rice milling machine is characterized by consisting of The method according to claim 1, wherein the cutter ring and the spacer is divided into two or three types of thin or thick standard, and selected and arranged in one kind according to the standard or two or three in succession arranged The bran-cut rice milling machine which is characterized by being. The set of claim 2, wherein the baffle ring has a groove extending in the axial direction on an inner circumferential surface thereof, and a leg extending from the central baffle is slidably disposed in the groove, and the leg is screwed from the outside by a set screw. A bran-cut rice milling machine, characterized by a fixed position configuration.

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