WO2014133308A1

WO2014133308A1 - Cutting ring and cutting ring assembly for ring milling machine having same

Info

Publication number: WO2014133308A1
Application number: PCT/KR2014/001544
Authority: WO
Inventors: 나용옥; 양재승
Original assignee: Na Yong Ok
Priority date: 2013-02-28
Filing date: 2014-02-26
Publication date: 2014-09-04
Also published as: KR101342998B1; JP2016508445A; JP6155345B2; CN105050721A; CN105050721B

Abstract

The present invention relates to a cutting ring for a rice milling machine capable of processing brown rice into milled rice, i.e. clean rice (wash-free rice), which can be cooked without washing, and a cutting ring assembly having the same. The cutting ring according to the present invention is shaped as a ring having a predetermined thickness, and has a plurality of cutting passages formed on an outer peripheral surface thereof to connect both side surfaces of the ring so that rice bran is cut away as rice grains pass through the cutting passages. Each cutting passage is shaped as a channel extending to both side surfaces of the ring, and the channel includes a bottom surface and a pair of side surfaces extending from both sides of the bottom surface. Further, the present invention provides a cutting ring assembly for a rice milling machine, which is configured to supply enough air to facilitate discharge of the rice bran during milling and to cool the rice grains.

Description

Cutting ring and cutting ring assembly for rice cleaning machine having the same

The present invention relates to a cutting ring for a cutting type rice polishing machine and a cutting ring assembly having the same. More specifically, the present invention relates to a cutting ring for a rice polisher which can be processed into white rice that can be cooked without washing brown rice, that is, clean rice, and a cutting ring assembly having the same.

Generally, rice husks removed from rice paddies are called brown rice (degree 100, white degree ± 20), and rice bran layer, which refers to the outermost layer of brown rice, skin, seed, endosperm, and even stratum, is called white rice. White rice is divided into 5 minutes, 7 minutes, and 10 minutes depending on the degree of milling. The process of separating rice bran (rice bran) from brown rice is called the milling process, and the device used in the milling process is called rice milling.

As a method for milling brown rice, a grinding method, a friction method, and a cutting method are known. The present invention relates to a rice mill of the cutting method.

Republic of Korea Patent No. 664,675 (name of the invention: bran-cutting rice mill) discloses a rice mill of the cutting method having a hollow shaft, a cutter ring, a spacer and a baffle ring. In the bran cutting type rice polishing machine disclosed in the patent, a cutter ring and a spacer are alternately inserted into a hollow shaft in which a vent hole is formed. On the outer circumferential surface of the cutter ring, a plurality of arc-shaped grooves are formed at equal intervals and the brown rice is cut while being fed into the arc-shaped grooves. In addition, an obtuse portion for cutting brown rice is formed on the outer circumferential surface of the spacer, and an open cutout portion is formed to discharge air supplied to the hollow shaft.

When the brown rice is coated with the rice polisher disclosed in the patent, the remaining rice bran is not cleanly treated on the surface of the polished white rice, and there is a problem that the temperature of the rice becomes high and is deteriorated during storage. This problem is because the rice bran is not completely removed due to insufficient amount of air supplied through the hollow shaft and the cutout of the spacer, and at the same time, the rice is not sufficiently cooled during milling. In addition, this is because the brown rice does not pass smoothly through the arc-shaped groove formed on the outer peripheral surface of the cutting ring. If the grains are not conveyed smoothly during the milling process, the grains of rice grains come into contact with the side wall or the screen of the cutter ring, resulting in high contact pressure and increased frictional heat. As a result, the yield of the mill is reduced.

The present invention is devised to improve the problems of the conventional cutting type rice polishing machine as described above.

An object of the present invention is to provide a cutting ring for a cutting-type rice polisher having a shape in which the grain can be smoothly fed at the time of milling.

It is also an object of the present invention to provide a cutting ring assembly for a cutting-type rice polisher, which is configured to smoothly discharge rice bran and provide sufficient air to cool the grains of rice at the time of cutting.

In addition, an object of the present invention is to provide a cutting ring assembly for a cutting-type rice polisher configured to smoothly feed rice grains at the time of milling.

According to one aspect of the invention, there is provided a cutting ring for use in a rice mill of a cutting method. The cutting ring according to the present invention has a ring shape having a constant thickness, and has a plurality of cutting passages formed to connect both sides of the ring so that the rice bran is cut while the rice grain passes through the outer circumferential surface. The cutting passage has a channel shape extending to both sides of the ring, and the channel includes a bottom surface and a pair of sides extending from both sides of the bottom surface. The brown rice passing through the cutting passage contacts the edge of the channel and the rice bran is cut and polished. In particular, the netting occurs at the same time in contact with the bottom and side surfaces near the edge of the channel.

In one embodiment, the bottom surface of the cutting ring is a plane perpendicular to the plane passing through the center axis of the cutting ring, and both sides may be configured to meet the bottom surface at an angle of at least 90 °. In addition, in order to increase the cutting effect of the grain of rice passing through the space between the screen and the cutting ring, the outer peripheral surface between each neighboring cutting passage may be formed in a plane perpendicular to the plane passing through the center axis of the cutting ring.

In one embodiment, the cutting ring supports the cutting ring so as to secure an air passage between the support shaft and the inner circumferential surface inserted and coupled inwardly, and is disposed at regular intervals in the circumferential direction from the inner circumferential surface and extends inwardly toward the center axis line. And a plurality of support portions and keyway connection protrusions formed on at least one end of the plurality of supports.

According to another aspect of the present invention, a spacing ring for use in a cutting ring assembly with a cutting ring is provided. The spacing ring according to the present invention has a ring shape having a constant thickness, supports the ring to secure an air passage between the support shaft and the inner circumferential surface inserted and coupled inward, and is disposed at regular intervals in the circumferential direction on the inner circumferential surface, and the central axis A plurality of supports extending inwardly toward the side, a keyway connecting protrusion formed at at least one end of the plurality of supports, and an air passage in which the outer and inner circumferential surfaces communicate on one side of the ring in a radial direction on one side of the ring; An air passage channel formed.

According to yet another aspect of the present invention, a cutting ring assembly for use in a cutting mill is provided. The cutting ring assembly according to the present invention has a hollow cylindrical shape, a support shaft having at least one key groove formed in a longitudinal direction on an inner circumferential surface and an outer circumferential surface thereof, a plurality of cutting rings fitted to and coupled to the support shaft, and a plurality of cutting rings. And a plurality of spacing rings that are fitted and coupled to the support shaft to be disposed therebetween. Each cutting ring has a ring shape having a constant thickness, and has a plurality of cutting passages formed to connect both sides of the ring such that rice bran is cut while rice grains pass through the outer circumferential surface, and a key groove connecting protrusion formed on the inner circumferential surface of the support shaft It is coupled to the key groove formed in the. Moreover, each spacing ring is ring-shaped of constant thickness, is arrange | positioned between a some cutting ring, and the keyway connection protrusion formed in the inner peripheral surface is fitted in the key groove formed in the outer peripheral surface of the support shaft, and is engaged. In addition, the cutting passage of the cutting ring has a channel shape extending to both sides of the ring, and the channel includes a bottom surface and a pair of sides extending from both sides of the bottom surface. In one embodiment, the bottom surface of the cutting ring used in the cutting ring assembly is a plane perpendicular to the plane passing through the center axis of the cutting ring, and both sides may be configured to meet at least 90 ° with the bottom surface. .

At least one air supply hole may be formed in the support shaft along the longitudinal direction to cool the rice grains by using the air supplied through the hollow support shaft in the drawing process. In addition, the gap ring may include a cutout in which the inner circumferential surface and the outer circumferential surface are opened such that air supplied through the air supply hole of the support shaft is discharged through the gap ring.

In some embodiments, the cooling process for cooling the rice grains through the space formed by the outer circumferential surface of the support shaft and the inner circumferential surface of the cutting blade and the inner circumferential surface of the spacer ring without supplying air for cooling the rice grains through the hollow support shaft in the refining process. You can also supply air. In one embodiment, the cutting ring supports the cutting ring so as to secure an air passage between the support shaft and the inner circumferential surface inserted and coupled inwardly, and is disposed at regular intervals in the circumferential direction from the inner circumferential surface and extends inwardly toward the center axis line. And a plurality of support portions, and the keyway connecting protrusion of the cutting ring may be formed at an end of the at least one cutting ring support portion. In addition, the spacer ring supports the ring so as to secure an air passage between the support shaft and the inner circumferential surface inserted and coupled inwardly, and is disposed at regular intervals in the circumferential direction on the inner circumferential surface, and extends inwardly toward the center axis. And the keyway connecting protrusion of the spacing ring may be formed at an end of the at least one spacing ring support. In addition, an air ring is inserted in order to secure a clearance between the gap ring and the cutting ring to allow air to flow. The air ring has a ring shape having a constant thickness and is disposed between the cutting ring and the spacing ring, the outer diameter of which is smaller than the inner circumferential surface of the spacing ring, and a keyway connecting protrusion formed on the inner circumferential surface can be fitted into the key groove formed on the outer circumferential surface of the support shaft.

In some embodiments, an air passage may be formed on one side of the spacing ring without using an air ring in the cutting ring assembly. The spacing ring is a ring shape having a constant thickness, supports the ring to secure an air passage between the support shaft and the inner circumferential surface inserted and coupled inward, and is disposed at regular intervals in the circumferential direction on the inner circumferential surface, and toward the center axis line. A plurality of support portions extending from the plurality of supports, a keyway connecting protrusion formed at at least one end of the plurality of support portions, and an air passage formed radially on one side of the ring to secure an air passage in which the outer and inner circumferential surfaces communicate on one side of the ring; It may include a channel.

In some embodiments, the cutting edge assembly for a rice polisher according to the present invention may further comprise an induction blade to facilitate the feeding of rice grains. The guide blade may be inserted and fixed to the outer circumferential surface of the plurality of cutting rings to be inclined spirally at an angle along the longitudinal direction of the support shaft. It is preferable that the inclination angle is in the range of 0 ° to 45 ° when the guide blade is fixed.

The cutting ring according to the present invention has the effect of removing the rice bran layer without damaging the brown rice because the channel-shaped cutting passage is formed. In addition, the cutting passage between the cutting ring and the cutting ring to move the rice is formed in the channel shape can effectively cut the surface of the rice grain to be milled.

In addition, the cutting ring assembly according to the present invention supplies a large amount of air evenly between the cutting ring and the spacing ring. Therefore, the rice grains are smoothly transferred and the rice brans are completely discharged so that the remaining rice bran does not stick to the surface of the rice grains and effectively cools the rice grains to prevent deterioration of the milled rice grains. In addition, the surface of the milled rice can produce clean, clean, and long-term storage.

The cutting ring assembly according to the invention also comprises an induction blade. Therefore, it is possible to effectively feed the grain of rice at the time of milling, it is possible to operate the rice mill at high speed, it is possible to easily adjust the degree of milling. In addition, the cutting ring assembly according to the present invention can achieve a susceptibility of 92% or more in accordance with the operating conditions during the milling, since there is little damage of the grains during milling.

1 is a front view of one embodiment of a cutting ring according to the present invention.

2 is a front view of one embodiment of a spacing ring according to the present invention.

3 is a perspective view of one embodiment of a cutting ring assembly for a rice mill according to the present invention.

4 is an exploded perspective view of the cutting ring assembly shown in FIG. 3.

5 is a schematic view showing a state in which the cutting ring assembly shown in FIG. 3 is installed in a rice mill.

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5 and illustrates an example in which a grain of rice is cut in the cutting ring assembly of FIG. 3.

7 is a front view of another embodiment of a cutting ring according to the present invention.

8 is a front view of another embodiment of a spacing ring according to the present invention.

9 is a perspective view of another embodiment of a cutting ring assembly for a rice polisher according to the present invention.

FIG. 10 shows a state in which the cutting ring assembly shown in FIG. 9 is installed in a rice mill

Schematic diagram.

FIG. 11 is a cross-sectional view taken along the line B-B of FIG. 10 and is an explanatory view showing a state in which the grain of rice is cut in the cutting ring assembly of another embodiment shown in FIG.

12 is a front view of one embodiment of an air ring that may be used in a cutting ring assembly in accordance with the present invention.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments associated with the accompanying drawings.

Hereinafter, preferred embodiments of the cutting ring according to the present invention and a cutting ring assembly for a rice polisher having the same will be described in detail with reference to the accompanying drawings. In the description, in the description of the cutting ring, the spacing ring and the air ring having a ring shape, one side is the front side of the ring and the other side is the rear side of the ring when viewed in the conveying direction of rice grains The side is called the outer circumferential surface of the ring and the inner side is defined as the inner circumferential surface of the ring.

1 shows one embodiment of a cutting ring according to the invention. The cutting ring 10 has a ring shape having a constant thickness, and a support shaft fitting hole is formed through the center thereof. The cutting passage 12 has a channel shape in which the front and rear surfaces of the cutting ring 10 are connected to each other. The channel includes a bottom face 12a and a pair of side faces 12b extending on both sides of the bottom face 12a. The plurality of cutting passages 12 are formed on the outer circumferential surface of the cutting ring 10 at equal intervals, but may not be equal intervals in other examples. The rice bran is cut in contact with the edge (edge) of the bottom surface 12a of the channel and the edge (edge) of the side surface 12b as it passes through the cutting passage 12. In particular, the cutting ring 10 of the present embodiment has an edge of the bottom surface 12a and the edges of both sides 12b when the grain of rice passes through the portion where the bottom surface 12a of the channel and the pair of side surfaces 12b meet. The cutting effect is excellent while cutting while simultaneously contacting (see FIGS. 6 and 11).

And the channel-shaped cutting passage 12 is the bottom surface 12a is a plane perpendicular to the plane passing through the center axis of the cutting ring 10, both sides 12b are angles of 90 degrees or more with the bottom surface 12a It is configured to meet with. Therefore, the substantially rugby ball-shaped rice grains passing through the cutting passage 12 are not caught in the corners of the cutting passage 12 to increase the cutting effect. In addition, an outer circumferential view of the ring between the cutting passage 12 and the cutting passage 12 such that rice grains passing through the space between the cutting ring 10 and the screen contacts the outer circumferential edge of the cutting ring 10 to effectively cut the rice bran. It is preferable to form a plane perpendicular to the plane passing through the central axis of the cutting ring 10, such as the bottom surface 12a.

In addition, the support part 13 extends from the inner peripheral surface of the cutting ring 10 to the support shaft fitting hole 11, and is provided in plurality at regular intervals along the circumferential direction of the cutting ring 10. In this embodiment, four are extended inward toward the center axis of the cutting ring 10, but is not limited thereto. And the key groove connecting projection 14 is formed at the end of each support 13, each key groove connecting projection 14 is fitted in the key groove formed in the corresponding support shaft. In the present embodiment, the keyway connecting protrusions 14 are all formed at the ends of each support 13, but are not limited thereto and may be formed at at least one end of each support 13.

FIG. 2 illustrates one embodiment of a spacing ring that may be used in the construction of a cutting ring assembly with the cutting ring shown in FIG. 1. The spacing ring 20 is a ring having a constant thickness, and a support shaft fitting hole 21 is formed through the center thereof. The cutout portion 22 is an open portion that allows the inner and outer circumferential surfaces of the spacer ring 20 to communicate with each other, and is used as a passage through which air supplied from the outside is discharged when assembled to the cutting ring assembly. The supporting portion 23 extends from the inner circumferential surface of the spacer ring 20 to the support shaft fitting hole 21, and is provided in plural at regular intervals along the circumferential direction of the spacer ring 20. Preferably four extend inward toward the central axis of the spacing ring 20, but is not limited thereto. And the key groove connecting projection 24 is formed at the end of each support 23, it is fitted in the key groove formed on the support shaft. In the present embodiment, the key groove connecting protrusions 24 are all formed at the ends of the respective support parts 23, but are not limited thereto and may be formed at at least one end of each support part 23.

The cutting ring 10 shown in FIG. 1 and the spacing ring 20 shown in FIG. 2 are used for the cutting ring assembly of the small-scale rice mill. FIG. 3 is a perspective view of one embodiment of a cutting ring assembly for a rice polisher assembled using the cutting ring 10 and the spacing ring 20 shown in FIGS. 1 and 2, and FIG. 4 is an exploded perspective view of FIG. 3.

Referring to FIG. 3, the cutting ring assembly 100 of the present embodiment is assembled by alternately fitting a plurality of cutting rings 10 and a plurality of spacing rings 20 to the support shaft 60. The fastening member 70 is assembled to one end of the support shaft 60 in order to fix the plurality of cutting rings 10 and the plurality of spacing rings 20 to the support shaft 60. And two guide blades 80 are installed in the groove formed to be inclined to the outer peripheral surface of the plurality of cutting ring 10.

Referring to FIG. 4, the support shaft 60 has a cylindrical shape of a hollow 61, and

key grooves

62 and 63 are formed in the longitudinal direction on the outer circumferential surface and the inner circumferential surface, respectively. The key groove formed on the outer circumferential surface of the support shaft 60 is called the outer key groove 62, and the key groove engaging protrusion 14 of the plurality of cutting rings 10 and the key groove of the spacer ring 20 are connected to the outer key groove 62. The protrusions 24 are fitted and engaged. Four outer key grooves 62 according to the present invention are formed at intervals such as 90 °, but are not limited thereto. The key groove formed on the inner circumferential surface of the support shaft 60 is called an inner key groove 63, and a key for coupling the power of the drive shaft 200 inserted into the hollow 61 of the support shaft 60 is transmitted. In addition, the air supply hole 64 may be formed in the support shaft 60. At least one air supply hole 64 is formed along the longitudinal direction of the support shaft 60 to communicate with the hollow 61. Therefore, the outside air supplied to the hollow 61 is discharged outward in the radial direction of the cutting ring assembly 100 through the air supply hole 64 and the cutout 22 of the spacing ring 20.

The plurality of spacing rings 20 according to the present invention may be assembled such that the cutouts 22 are arranged at a predetermined angle in the circumferential direction so that air is evenly discharged in the circumferential direction. One end of the support shaft 60 is provided with a plurality of cutting rings 10 inserted therein and a flange 65 for supporting the gap ring 20 so as not to fall out, and the other end is provided with a thread 66 on its outer circumferential surface. The fastening member 70 has a thread 71 formed on an inner circumferential surface thereof, and a plurality of cutting rings 10 and a gap ring 20 inserted alternately into the other end of the support shaft 60 so as not to fall out of the thread 66. Is fastened. In some embodiments, threads are formed at both ends of the support shaft 60, and the fastening members 70 may be screwed at each end.

The assembling procedure of the cutting ring assembly for rice cleaning machine of this embodiment is explained.

First, the cutting ring 10 is inserted into the end where the thread 66 of the support shaft 60 is formed and pushed to the end where the flange 62 is formed. At this time, each of the key groove connecting projections 15 formed in the support shaft fitting hole 11 of the cutting ring 10 is assembled in a state of being fitted in each of the outer key grooves 62 formed on the outer circumferential surface of the support shaft 60. As such, the key groove connecting protrusion 14 of the cutting ring 10 moves along the outer key groove 62 formed on the support shaft 60, so that the cutting ring 10 can be installed accurately without rotating or twisting. In addition, the support part 13 of the cutting ring 10 is assembled in a state in which it is in stable contact with the outer peripheral surface of the support shaft 60.

Next, the gap ring 20 is inserted into the end where the thread 66 of the support shaft 60 is formed and pushed to the cutting ring 10 fitted first. At this time, each key groove connecting projection 24 formed in the support shaft fitting hole 21 of the spacing ring 20 is installed in a state of being fitted into each outer key groove 63 formed on the outer circumferential surface of the support shaft 60. In this way, the keyway connection protrusion 24 of the spacing ring 20 moves along the outer keyway 62 formed in the support shaft 60, so that the spacing ring 20 can be installed accurately without rotating or twisting. In addition, the support 23 of the spacing ring 20 is installed in stable contact with the outer circumferential surface of the support shaft 60. At this time, the notch 22 is preferably installed in communication with any one of the air supply holes 64 of the plurality of air supply holes 64 formed in the support shaft 60.

Next, the other cutting ring 10 is pushed to the gap ring 20 fitted to the support shaft 60, and the new gap ring 20 is pushed to the cutting ring 10 fitted first. In this way, the cutting ring 10 and the spaced ring 20 are fitted to the support shaft 60 so that the plurality of spaced rings 20 are alternately disposed between the plurality of cutting rings 10. At this time, the cutout portion 22 of the spacing ring 20 may be assembled to face the same direction or different directions as the cutout portion 22 of the spacing ring 20 pushed first.

Next, after inserting a predetermined number of cutting rings 10 and the spacing ring 20 alternately to the end where the threads 66 of the support shaft 60 are formed, the plurality of cutting rings 10 and the spacing ring 20 are inserted. ) Is assembled to the fastening member 70 at one end of the support shaft 60 so as not to be separated from the support shaft 60. And a pair of guide blades 80 inclined in a spiral at a predetermined angle is installed on the outer peripheral surface of the plurality of cutting rings 10 and the plurality of spacing rings 20 are sequentially assembled. Before installing the guide blade 80, it is preferable to form an inclined groove for coupling the guide blade 80 to the outer circumferential surface of the cutting ring assembly 100, but is not limited thereto. The guide blade 10 uses a long steel member, but is not limited thereto. As long as the insertion is made of aluminum or plastic in a suitable shape, the space between the cutting ring 10 and the cutting ring 10 and the gap ring 20 in the longitudinal direction can be blocked. In the present embodiment, a pair of guide blades 80 are used, but the present invention is not limited thereto, and one guide blade or three guide blades may be installed.

When the cutting blade assembly 100 is installed as described above, when the cutting ring assembly 100 rotates, the rice grains located above the spacing ring 20 allow the rice grains to move in the rotational direction of the support shaft 60 so that the rice grains are mixed. To be discharged to the outlet. Therefore, the inclination angle (a °) of each guide blade 80 is preferably about 15 degrees so that the rice grains are smoothly conveyed, but is not limited thereto. The inclination angle of the induction blade 80 may adjust the inclination angle of the induction blade 80 within the range of 0 ° to 45 ° according to the length, degree of cutting, or yield of the cutting ring assembly 100 for the rice mill.

Further, in some embodiments, the cutting ring assembly 100 for the rice polisher adjusts the thickness of the gap ring 20 or the size of the cutouts 22 so that the air discharge decreases or increases along the direction in which the grain of rice is milled and conveyed. Can be. For example, the thickness of the spacing ring 20 or the size of the cutout portion 22 may be made smaller in the direction in which the grain of rice moves, so that the amount of air supplied decreases along the direction in which the grain of rice is conveyed. In this case, the amount of rice generated by cutting is reduced while the cutting is in progress, so cooling or discharging of rice bran is possible even if the air supply is reduced, thereby saving energy by reducing the air supply.

FIG. 5 is a cross-sectional view schematically illustrating a state in which a cutting ring assembly for a rice cleaning machine shown in FIG. 3 is installed in a rice cleaning machine, and FIG. 6 is a cross-sectional view taken along line A-A of FIG.

Referring to FIG. 5, the drive shaft 200 is rotatably installed on the rice mill case 230, and the hollow support shaft 60 of the cutting ring assembly 100 is fitted to the drive shaft 200. In addition, the drive shaft 200 is equipped with a screw 210 for feeding the brown rice on one side of the cutting ring assembly (100). In addition, a hopper 200 for supplying brown rice is installed on the upper portion of the screw 210. The drive shaft 200 rotates by receiving power from the pulley 250 connected to the motor, and the bearing 240 is installed for smooth rotation. The case 230 near the end of the cutting ring assembly 100 is provided with an outlet 260 for discharging the milled rice grains.

In the specific operation state, when the drive shaft 200 is rotated by the motor, the brown rice supplied to the hopper 220 is pushed toward the cutting ring assembly 100 by the screw 210. The brown rice pushed into the cutting ring assembly 100 is pushed toward the outlet 260 while continuously passing through the cutting passage 12 of the cutting ring assembly 100 which rotates together with the drive shaft 200. At this time, the rice grains passing through the cutting passage 12 passes through contact with the edges of the pair of side surfaces 12b extending on both sides of the bottom surface 12a and the bottom surface 12a of the cutting passage 12, Rice bran is cut and removed. Although not shown, the drive shaft 200 according to the present embodiment supplies external air supplied through the hollow drive shaft 200 to the hollow portion 61 of the support shaft 60. In this way, the air supplied to the hollow portion 61 of the support shaft 60 passes through the air supply hole 64 of the support shaft 60, and the outer circumferential surface of the support shaft 60, the cutting ring 10, and the spacing ring It is supplied to the

air passages

15 and 25 formed by the inner circumferential surface of 20. The air supplied to the air passage 15 of the spacing ring 20 passes through the cutout 22 to discharge the cut rice bran to the outside of the screen so that the rice bran does not stick to the rice grains and remain. In addition, the air discharged through the cutout 22 cools the rice grains having a high temperature due to friction.

7 shows another embodiment of a cutting ring according to the invention. Referring to FIG. 7, the cutting ring 30 of the present embodiment is formed such that the plurality of support portions 33 extend longer toward the center than the cutting ring 10 of the embodiment shown in FIG. 1, thereby providing sufficient air passages 35. There is a difference in securing).

The cutting ring 30 of another embodiment of the present invention has a ring shape having a constant thickness, and a support shaft fitting hole 31 is formed through the center thereof. The cutting passage 32 has a channel shape in which the front and rear surfaces of the cutting ring 30 are connected to each other. The channel includes a bottom face 32a and a pair of side faces 32b extending on both sides of the bottom face 32a. The plurality of cutting passages 32 are formed on the outer circumferential surface of the cutting ring 30 at equal intervals, but may not be equal intervals in other yarn examples. And the bottom surface 32a of the cutting passage 32 is a surface perpendicular to the plane passing through the center axis of the cutting ring 30, and both side surfaces 32b meet at an angle of 90 ° or more with the bottom surface 32a. Consists of. In addition, the outer circumferential surface of the ring between the cutting passage 32 and the cutting passage 32 is formed perpendicular to the plane passing through the central axis of the cutting ring 30 like the bottom surface 32a.

In addition, the support part 33 extends from the inner peripheral surface of the cutting ring 30 to the support shaft fitting hole 31, and is provided in plurality at regular intervals along the circumferential direction of the cutting ring 10. In this embodiment, four are extended inward toward the center axis of the cutting ring 10, but is not limited thereto. And the key groove connecting projection 34 is formed at the end of each support 33, each key groove connecting projection 34 is fitted in the key groove formed on the corresponding support shaft. As shown in FIG. 11, the air passage 35 is defined by the outer circumferential surface of the support shaft 60 fitted to the cutting ring 30, the inner circumferential surface of the cutting ring 30, and the support part 33.

8 illustrates one embodiment of a spacing ring that can be used in a cutting ring assembly in combination with the cutting ring shown in FIG. 7. The spacing ring 40 of the present embodiment is formed in such a way that the plurality of support portions 43 are formed to extend longer toward the center than the spacing ring 20 of the embodiment shown in FIG. 2, thereby securing the air passage 45. There is a difference.

Another embodiment of the spacing ring 40 according to the present invention is a ring-shaped having a constant thickness, the support shaft fitting hole 41 is formed through the center. The supporting portion 43 extends from the inner circumferential surface of the spacer ring 40 to the support shaft fitting hole 41, and is provided in plurality at regular intervals along the circumferential direction of the spacer ring 40. Preferably four extend inward toward the central axis of the spacing ring 20, but is not limited thereto. And the key groove connecting projection 44 is formed at the end of each support 43, it is fitted in the key groove formed on the support shaft. As shown in FIG. 11, the air passage 45 is defined by the outer circumferential surface of the support shaft 60 fitted to the spacer ring 40, the inner circumferential surface of the spacer ring 40, and the support 43. In addition, when the spacer ring 40 is assembled to be adjacent to the cutting ring 30, the front face of the spacer ring 40 is partially removed to secure an air passage in which the inner and outer peripheral surfaces of the spacer ring 40 communicate with each other. An air passage channel 42 is formed. Therefore, the air that has passed through the air passage 35 of the cutting ring 30 passes through the air passage 45 of the gap ring 40 adjacent to the cutting ring 30 and then passes through the air passage channel 42. To be discharged.

9 to 11 show another embodiment of the cutting ring assembly for rice milling machine according to the present invention, wherein the cutting ring assembly of another embodiment is used for a large rice milling machine. The cutting ring assembly 100 ′ of another embodiment according to the present invention differs from the cutting ring assembly 100 of the embodiment shown in FIG. 3 in that the air for cooling the grain of rice and discharging the rice bran into the hollow of the support shaft. Instead of being supplied, it is directly supplied to the

air passages

35 and 45 through the air supply pipe 270 formed in the case of the rice mill separately. Only the other parts will be described below.

Referring to FIG. 9, the cutting ring assembly 100 ′ according to another embodiment of the present invention includes a plurality of cutting rings 30 in which an air passage 35 is formed so as to be assembled by being alternately fitted to the support shaft 60. The passage 45 includes a plurality of spacing rings 40 formed therein. The fastening member 71 formed with a hole is assembled at both ends of the plurality of cutting rings 30 and the plurality of spacing rings 40 assembled. The guide blades 80 are installed in grooves formed to be inclined to the outer circumferential surfaces of the plurality of cutting rings 30 and the plurality of spacing rings 40, respectively.

10 and 11, when using the cutting ring assembly 100 ′ assembled using the cutting ring 30 and the spacing ring 40 of the present embodiment, an air supply pipe 270 for supplying air is provided. It is provided in this rice mill case 230. Therefore, the air supplied through the air supply pipe 270 passes through the inside of the screw 210. Then, it passes through the air passage 35 of the cutting ring 30 and is supplied to the air passage 45 of the spacing ring 40. The air supplied in this way passes through the air passage channel 42 to discharge the cut rice bran to the outside of the screen so that the rice bran sticks to the rice grains in which the rice bran is not retained. In addition, the air discharged through the air passage channel 42 cools the rice grains whose temperature is increased by friction.

12 illustrates an embodiment of an air ring used when assembling a cutting ring assembly using a spacing ring 20 without cutouts 22 or using a spacing ring 40 without an air passage channel 42. Front view. The air ring 50 of this embodiment is installed to secure a clearance between the gap ring 40 and the cutting ring 30 to allow air to pass through. The air ring 50 has a ring shape having a constant thickness, and a support shaft fitting hole 51 penetrated at the center thereof is formed. The key groove connecting protrusion 52 extends in the center direction from the inner circumferential surface of the support shaft fitting hole 51 and is fitted to each outer key groove 62 formed on the outer circumferential surface of the support shaft 60 to be assembled. A plurality of outer protrusions 53 are formed on the outer circumferential surface of the ring, and are disposed on each of the supporting portions 42 formed of the spacing rings 40. Moreover, it is preferable that the outer diameter of the air ring 50 is smaller than the inner peripheral surface of the support shaft fitting hole 41 of the space ring 40. Therefore, the air supplied to the air passage 45 of the spacing ring 40 is discharged to the gap formed between the cutting ring 30 and the spacing ring 40 by the air ring 50 so that the cut rice bran is outside the screen. So that the rice bran does not stick to the milled rice grains and remain. In addition, the air discharged through the air passage channel 42 has the effect of cooling the rice grains having a high temperature by friction.

Embodiments of the present invention described above and illustrated in the drawings should not be construed as limiting the technical spirit of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention as long as it will be apparent to those skilled in the art.

Claims

In a cutting ring having a constant thickness and having a plurality of cutting passages formed to connect both sides of the ring so that the rice bran is cut while passing through the outer circumferential surface,

The cutting passage has a channel shape extending to both sides of the ring,

The channel includes a bottom surface and a pair of sides extending from both sides of the bottom surface.
The method of claim 1,

The bottom surface is a plane perpendicular to the plane passing through the central axis of the cutting ring,

The both sides are configured to meet at least 90 ° with the bottom surface.
The method of claim 2,

The outer circumferential surface between each neighboring cutting passage is formed in a plane perpendicular to the plane passing through the central axis of the cutting ring.
The method according to any one of claims 1 to 3,

A plurality of support portions which support the cutting ring so as to secure an air passage between the support shaft and the inner circumferential surface inserted and coupled inwardly, and are disposed at regular intervals in the circumferential direction from the inner circumferential surface and extend inwardly toward the center axis;

And a keyway connecting protrusion formed at an end of at least one of the plurality of supports.
It is ring shape of constant thickness,

A plurality of support portions which support the ring so as to secure an air passage between the support shaft and the inner circumferential surface inserted and coupled to the inner side, and are arranged at regular intervals in the circumferential direction on the inner circumferential surface and extend inwardly toward the center axis;

A key groove connecting protrusion formed at an end of at least one of the plurality of supporting parts;

And an air passage channel formed radially on one side of the ring to secure an air passage in which an outer circumferential surface and an inner circumferential surface communicate with one side of the ring.
A support cylinder having a hollow cylindrical shape and having at least one key groove formed in the longitudinal direction on the inner and outer circumferential surfaces thereof,

Ring shape of a certain thickness, having a plurality of cutting passages formed to connect both sides of the ring so that the rice bran is cut as the rice grains pass through the outer peripheral surface, the key groove connecting projection formed on the inner peripheral surface is fitted into the key groove formed on the outer peripheral surface of the support shaft A plurality of combined cutting rings,

A ring shape having a constant thickness and disposed between the plurality of cutting rings, the key groove connecting protrusion formed on an inner circumferential surface of the ring including a plurality of spacing rings coupled to the key groove formed on the outer circumferential surface of the support shaft;

The cutting passage has a channel shape extending to both sides of the ring,

And said channel comprises a bottom surface and a pair of sides extending from both sides of said bottom surface.
The method of claim 6,

The bottom surface is a plane perpendicular to the plane passing through the central axis of the cutting ring,

Both sides are configured to meet with the bottom surface at an angle of at least 90 °.
The method of claim 6,

The support shaft is formed with at least one air supply hole along the longitudinal direction,

The spacing ring is a cutting ring assembly for a rice polisher, the inner peripheral surface and the outer peripheral surface open cutout.
The method of claim 6,

The cutting ring supports the cutting ring so as to secure an air passage between the support shaft and the inner circumferential surface inserted and coupled inwardly, and is disposed at regular intervals in the circumferential direction from the inner circumferential surface and extends inwardly toward the center axis. Including,

The keyway connecting projection of the cutting ring is formed at the end of at least one cutting ring support,

The spacing ring supports the ring so as to secure an air passage between the support shaft and the inner circumferential surface inserted and coupled inwardly, and is disposed at regular intervals in the circumferential direction on the inner circumferential surface, and includes a plurality of support portions extending inwardly toward the center axis line. and,

The keyway connecting projection of the spacing ring is formed at the end of at least one spacing ring support,

A plurality of air of a ring shape of a constant thickness, disposed between the cutting ring and the spacing ring, the outer diameter is smaller than the inner circumferential surface of the spacing ring, the key groove connecting projection formed on the inner circumferential surface is fitted into the key groove formed on the outer circumferential surface of the support shaft A cutting ring assembly for a rice polisher comprising a ring.
The method of claim 6,

The cutting ring supports the cutting ring so as to secure an air passage between the support shaft and the inner circumferential surface inserted and coupled inwardly, and is disposed at regular intervals in the circumferential direction from the inner circumferential surface and extends inwardly toward the center axis. Including,

The keyway connecting projection of the cutting ring is formed at the end of at least one cutting ring support,

The spacing ring supports the ring so as to secure an air passage between the support shaft and the inner circumferential surface inserted and coupled inwardly, and is disposed at regular intervals in the circumferential direction on the inner circumferential surface, and includes a plurality of support portions extending inwardly toward the center axis line. and,

The keyway connecting projection of the spacing ring is formed at the end of at least one spacing ring support,

And a radial air passage channel formed at one side of the ring in order to secure an air passage communicating with an outer circumferential surface and an inner circumferential surface at one side of the spacing ring.
The method according to any one of claims 6 to 10,

And at least one guide blade inserted into and fixed to an outer circumferential surface of the plurality of cutting rings to be helically inclined at a predetermined angle along a longitudinal direction of the support shaft.
The method of claim 11,

The cutting ring assembly for rice milling machine wherein the inclination angle of the guide blade is in the range of 0 ° to 45 °.
The method of claim 6,

The cutting ring assembly for rice milling machine having a gap for discharging air between the cutting ring and the spacing ring.