Set-type rice-milling apparatus

Abstract

The present invention relates to a set-type rice-milling apparatus, the rice-milling apparatus comprising: a selection unit for filtering and removing, by blowing, foreign substances accompanying rice; a brown rice unit, connected to the selection unit and fed with the selected rice, for hulling the supplied rice to process into brown rice; a stone removal unit, connected to the brown rice unit and fed with brown rice, for removing stones among the brown rice; a polishing unit, connected to the stone removal unit and fed with stone-free brown rice, for grinding the bran off the supplied brown rice to process into white rice; and a control unit for controlling the units, the units being provided in a single module frame to form a set.

Description

Rice milling device (set type)

[0001] The present invention relates to a set-type rice milling device, and more specifically, to a set-type rice milling device in which sorting, browning, grinding, milling, and grading operations can be performed sequentially in a single milling device, and which can process various types of rice to produce short-grain, medium-grain, and long-grain rice.

[0002] Generally, a rice milling device is a device that processes rice to produce rice, and rice is largely composed of a husk layer, a bran layer, a germ, and an endosperm.

[0003] The rice from which the pericarp, or the husk layer, has been removed is called brown rice, and the rice from which the rice bran, consisting of the seed coat and the aleurone layer in addition to the endosperm, has been removed is called white rice.

[0004] This white rice is produced through the processes of sorting, brown rice processing, stone removal, milling, and grading. The types of rice produced in this way are classified into short-grain, medium-grain, and long-grain varieties based on their grain shape, specifically their length.

[0005] In particular, short-grain rice is mainly produced in Northeast Asia, including Korea. Short-grain rice consists of short, plump, and almost round grains, and when cooked, it is soft and sticky, with the grains sticking together well.

[0006] Also, medium-grain rice is mainly produced in South Asia, and compared to short-grain rice, medium-grain rice has larger, longer, and plumper grains. When cooked, medium-grain rice is sticky and soft, and the grains tend to stick together well.

[0007] Long-grain rice is a type of rice mainly produced in Southeast Asia, commonly known as Annam rice. It has an elongated and fine grain shape, and when cooked, the grains scatter and are light in weight, resulting in a fluffy texture.

[0008] As such, since rice is classified into short-grain, medium-grain, and long-grain varieties depending on the cultivation region, there is a disadvantage that the rice milling equipment used to process the rice must also be configured differently for each cultivation region.

[0009] In other words, while rice milling equipment designed to produce short-grain rice has been developed and is used in Northeast Asia, where Korea is located, medium and long-grain rice is produced in South Asia and Southeast Asia. Consequently, there are many restrictions associated with exporting rice milling equipment to countries in these regions due to the inconvenience of having to modify the structure.

[0010]

[0011] (Prior Art Literature)

[0012] (Patent Literature)

[0013] Republic of Korea Registered Patent No. 10-1271643

[0014] Accordingly, the present invention was devised to solve the problems of the prior art as described above, and aims to provide a set-type rice milling device in which a sorting unit, a brown rice unit, a stone removal unit, a milling unit, and a sorting unit are all configured to form a set, and various types of rice can be processed in the set-type rice milling device to produce short-grain, medium-grain, and long-grain rice.

[0015] A rice set-type milling device according to the present invention for achieving the above-mentioned purpose comprises: a sorting unit that filters out and removes foreign substances fed together with rice by blowing air; a brown rice unit connected to the sorting unit, which supplies sorted rice and removes the husks of the supplied rice to process it into brown rice; a stone removal unit connected to the brown rice unit, which supplies processed brown rice and removes stones contained in the brown rice; a milling unit connected to the stone removal unit, which supplies stone-removed brown rice and grinds the husks of the supplied brown rice to process it into white rice; and a control unit that controls the above-mentioned units; and is characterized in that the above-mentioned units are provided in a single module frame.

[0016] In addition, the stone removal unit may be composed of a stone remover in which a stone removal plate for removing stones contained in brown rice is movably provided.

[0017] In addition, the stone separator may include a perforated plate that is inclinedly provided in the stone separator so that brown rice discharged from the stone separator settles on it while small stones contained in the brown rice are discharged to the lower surface, and a discharge plate having a discharge net that is inclinedly connected to the perforated plate and discharges brown rice transported from the perforated plate to the lower surface.

[0018] In addition, the stone plate is equipped with a driving means for shaking the stone plate, and the driving means includes a rotating shaft that is rotatably coupled to the stone chipper and rotates in forward and reverse directions, a driving pulley that is fixedly coupled to the rotating shaft and rotates together with the rotating shaft, and an operating shaft that is eccentrically connected to the rotating shaft and has one eccentrically connected to the stone plate so as to move and shake the stone plate, and the stone plate may be equipped with a plurality of supports that rotatably connect the stone plate to the stone chipper.

[0019] In addition, the milling unit may include a grinder for removing the seed coat of the brown rice and a milling machine for removing the bran from the hulled rice to process it into white rice.

[0020] In addition, the grinding machine includes a grinding roller rotatably installed inside, and a mesh installed spaced apart from the grinding roller to surround it, with diagonal slots formed on its surface. The mesh is provided as a double mesh consisting of an inner mesh and an outer mesh, each having a slot, and the inner mesh or the outer mesh can be configured to move from the other mesh to adjust the hole area of ​​the slot.

[0021] In addition, an inner mesh flange protruding outwardly is formed at the end of the inner mesh, and an incision is formed at the end of the outer mesh so that the inner mesh flange is inserted through it by cutting in the circumferential direction. An outer mesh flange is formed by bending outwardly at the incision so as to face the inner mesh flange of the inner mesh. A weld nut is fixedly provided on the outer mesh flange, and an adjustment bolt is provided that is coupled through both flanges and fastened to the weld nut of the outer mesh flange. By fastening or loosening the adjustment bolt to the weld nut, the inner mesh can be moved in the circumferential direction of the outer mesh to adjust the connected hole area of ​​both slots.

[0022] In addition, an elastic member that elastically supports both flanges may be provided between the two flanges.

[0023] According to the rice set-type milling device of the present invention, a sorting unit, a brown rice unit, a stone removal unit, a milling unit, and a grading unit can all be configured as a set in a single milling device, and there is an effect of being able to produce short-grain, medium-grain, and long-grain rice by processing various types of rice in the set-type milling device.

[0024] FIG. 1 is a perspective view of a rice set-type milling device according to the present invention, viewed from the sorting unit side.

[0025] FIG. 2 is a perspective view of a rice set-type milling device according to the present invention, viewed from the milling unit side.

[0026] FIG. 3 is a perspective view showing the rear portion of a rice set-type milling device according to the present invention.

[0027] FIG. 4 is a diagram showing the configuration of a stone removal unit configured in a rice set-type milling device according to the present invention.

[0028] FIG. 5 is a diagram showing the configuration of a shaking body configured in the stone removal unit of a rice set-type milling device according to the present invention.

[0029] FIG. 6 is a front view of a vibrating body according to the present invention.

[0030] FIG. 7 is a diagram showing the configuration of a rice milling unit configured in a rice set-type milling device according to the present invention.

[0031] FIG. 8 is a side view illustrating the grinding roller of a grinder configured in a milling unit according to the present invention.

[0032] FIG. 9 is a combined diagram of a grinding roller and a mesh according to the present invention.

[0033] FIG. 10 is an exploded view of a grinding roller and a mesh according to the present invention.

[0034] Figures 11 (a) and (b) are operation diagrams of the slots of the mesh according to the present invention in an adjusted state.

[0035] Figures 12 (a), (b), and (c) are drawings of a state in which rice grains pass through the slots of a mesh adjusted according to Figure 11 and are discharged.

[0036] FIG. 13 is a diagram illustrating the movement path of rice in a rice set-type milling device according to the present invention.

[0037] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0038] The terms used in this invention are defined in consideration of their functions within the invention; however, since these may vary depending on the intentions or practices of the user or operator, the definitions of these terms should be interpreted in a sense and concept consistent with the technical details of this invention.

[0039] In addition, the embodiments of the present invention are not intended to limit the scope of the rights of the present invention, but are merely exemplary matters of the components presented in the claims of the present invention, and are embodiments that include components that are included in the technical concept throughout the specification of the present invention and can be substituted as equivalents for the components of the claims.

[0040] Additionally, optional terms in the following examples are used to distinguish one component from another, and the components are not limited by said terms.

[0041] Accordingly, in describing the present invention, detailed descriptions of related prior art that may unnecessarily obscure the essence of the invention are omitted.

[0042]

[0043] The attached drawings, FIGS. 1 to 13, are drawings illustrating a rice set-type milling device according to the present invention and components comprising the same.

[0044] As shown in FIGS. 1 to 3, the rice set-type milling device (100) according to the present invention comprises a sorting unit (200) that filters out and removes foreign substances introduced together with rice by blowing air, a brown rice unit (300) connected to the sorting unit (200) that supplies sorted rice and removes the husks of the supplied rice to process it into brown rice, a stone removal unit (400) connected to the brown rice unit (300) that supplies processed brown rice and removes stones contained in the brown rice, a milling unit (500) connected to the stone removal unit (400) that supplies stone-removed brown rice and grinds the husks of the supplied brown rice to process it into white rice, and a control unit (700) that controls the above-mentioned units.

[0045] And, the above-mentioned units are configured to be connected to each other in a single module frame (110) and formed into a set.

[0046] Here, the module frame (110) includes a planar frame connected in the X and Y axis directions on a plane, and a vertical frame erected vertically in the Z axis direction, i.e., upward from the planar frame, and casters are provided on the planar frame so that the milling device (100) can be moved smoothly.

[0047] On the back side, i.e., the rear portion, of this module frame (110), a blower (120) and a collector (130) are provided in a connected state as shown in FIG. 3.

[0048] A blower (120) is connected to a sorting unit (200), a brown rice unit (300), a stone removal unit (400), and a polishing unit (500), and foreign substances, rice husks, dust, etc. generated in each unit are sucked into the blower (120) and discharged.

[0049] Also, the collector (130) may be equipped with a cyclone into which foreign substances, rice husks, dust, etc. collected by the blower (120) are introduced and collected.

[0050]

[0051] As shown in FIGS. 1 and 3, the sorting unit (200) is a device that is provided on one side, that is, the left side, of the module frame (110) to remove foreign substances introduced together with rice.

[0052] This sorting unit (200) includes an input hopper (210) into which rice is fed, a first elevator (220) connected to the input hopper (210) to move the fed rice from below to above, a sorting machine (230) into which the rice discharged from the first elevator (220) is supplied to filter out foreign substances fed together with the rice and remove them in a first step, and a sorting plate (240) provided at the bottom of the sorting machine (230) to filter out and remove foreign substances contained in the rice from which foreign substances have been removed in a first step in the sorting machine (230) in a second step.

[0053] At this time, the first elevator (220) is a lifting device that is vertically erected on the module frame (110), and its lower end is connected to the input hopper (210) and its upper end is connected to the sorting device (230).

[0054] A blower (120) is connected to the sorting machine (230) so that the suction force of the blower (120) acts. Accordingly, foreign matter introduced into the sorting machine (230) along with rice is sucked in by the suction force of the blower (120) and discharged to the collector (130).

[0055] And, the sorting plate (240) is provided with an inclined upper and lower two-stage structure, and the sorting plate (240) of the two-stage structure is provided to move back and forth by means of a cam (not shown). Among these two-stage sorting plates (240), the upper sorting plate has a mesh structure with a larger diameter than the lower sorting plate. Thus, foreign substances supplied to the sorting plate (240) along with rice are filtered out and removed secondarily by the upper sorting plate, and rice with relatively small particles falls through the upper sorting plate to the lower sorting plate and is discharged toward the brown rice unit (300).

[0056] At this time, between the sorting machine (230) and the sorting plate (240), a discharge hopper (231) is provided to discharge rice discharged from the sorting machine (230) to the upper side of the inclined sorting plate (240), and the sorting plate (240) is provided with a discharge plate (241) to discharge and supply rice to the brown rice unit. Thus, the rice discharged from the sorting machine (230) is supplied to the upper side of the sorting plate (240) and moved to the lower side, where it is quickly separated from foreign substances and supplied to the brown rice unit (300).

[0057]

[0058] As shown in FIGS. 1 and 2, the brown rice unit (300) is provided adjacent to the sorting unit (200) and is a device for removing the husk of rice, i.e., the pericarp (chaff).

[0059] This brown rice unit (300) includes a second elevator (310) that receives the sorted rice discharged from the sorting plate (240) of the sorting unit (200) and moves it upward, and a brown rice machine (320) that receives the rice discharged from the second elevator (310) and removes the husk (pericarp) of the rice through friction between the rice to process it into brown rice.

[0060] In particular, the hulling machine (320) is equipped with an impeller (321) that sucks in and transports rice fed into the hulling machine (320) and causes friction between the transported rice to remove the hulls of the rice, and is equipped with a discharge plate (322) that discharges the rice from which the hulls have been removed by the impeller (321) to a stone removal unit (400).

[0061]

[0062] As shown in FIGS. 1 and 4, the stone removal unit (400) is a device that is provided adjacent to the brown rice unit (300) to remove stones contained in the brown rice.

[0063] This stone-removing unit (400) may be composed of a stone-removing machine (410) in which a stone-removing plate (420) for removing stones contained in brown rice is movably provided.

[0064] In particular, in the stone separator (410), large particles of stone contained in the brown rice can be separated and removed as the brown rice moves through the interior, and in the stone separator plate (420), small particles of stone that have passed through the stone separator (410) are separated and removed.

[0065] As shown in FIG. 4, the stone plate (420) is provided in a downwardly inclined manner in the stone chipper (410). One end of the stone plate (420) is provided in a position inside the stone chipper (410), and the other end of the stone chipper (410) is provided in a downwardly inclined manner, penetrating the stone chipper (410) and protruding toward the hopper side of the third elevator (510) to be described later.

[0066] Thus, the brown rice discharged to the upper side of the stone plate (420) rolls down to the lower side of the stone plate (420) due to the incline of the stone plate (420), and in this process, the small particles of stone contained in the brown rice are discharged to the lower side of the stone plate (420), thereby enabling rapid stone separation.

[0067] Meanwhile, the stone-breaking plate (420) described above, as shown in FIGS. 5 and 6, includes a perforated plate (421) having a plurality of perforations so that brown rice discharged from the stone-breaking machine (410) settles on it and small stones contained in the brown rice are discharged to the lower surface, and a discharge plate (427) having a discharge net (428) connected to the perforated plate (421) at an angle to discharge brown rice transported from the perforated plate (421) to the lower surface.

[0068] In this embodiment, the perforations of the perforated plate (421) are described as being formed with a diameter smaller than that of brown rice so as to allow for the discharge of stones or foreign substances with particles smaller than brown rice. However, contrary to this embodiment, the perforations of the perforated plate (421) may be configured so that brown rice can be discharged through the perforations of the perforated plate (421). In this case, it is preferable that the discharge plate (427) be provided in a state where it covers the lower surface of the perforated plate (421).

[0069] Additionally, a protruding rim (422) that is vertically erected upward may be provided on the edge side of the perforated plate (421), and the rim (422) prevents the brown rice on the perforated plate (421) from scattering outward even when the perforated plate (421) shakes.

[0070] Additionally, the perforated plate (421) is hinged to the inner side of the stone crusher (410) as a support (423) to provide a reciprocating motion that moves in and out of the stone crusher (410).

[0071] Meanwhile, a driving means is provided on the inner side of the stone separator (410) to move and shake the perforated plate (421) back and forth. As shown in FIG. 6, the driving means includes a rotation shaft (425) that is rotatably coupled to the stone separator (410) and rotates in forward and reverse directions, a driving pulley (424) that is fixedly coupled to the rotation shaft (425) and rotates together with the rotation shaft (425), and an operating shaft (426) that is eccentrically connected to the rotation shaft (425) and has one eccentrically connected to the stone separator plate (420) so as to move and shake the stone separator plate (420).

[0072] At this time, the rotation axis (425) has both ends hinged to the stone cutter (410), allowing for free forward and reverse rotation.

[0073] And, although not shown in the drawing, a motor is connected to the drive pulley (424), and the drive pulley (424) rotates in place along with the rotation axis (425) as it rotates forward or reverse by the motor.

[0074] In particular, the end portion of the rotation shaft (425), that is, the end on the side opposite the drive pulley (424), is formed as a bent portion that is bent in one direction away from the rotation shaft (425), and the operating shaft (426) is rotatably coupled and connected to this bent portion, so that the operating shaft (426) is provided in an eccentric state relative to the rotation shaft (425).

[0075] Thus, when the rotation axis (425) rotates in the forward and reverse directions, the operating axis (426) rotates up and down, causing the perforated plate (421) to move back and forth, and in this process, the perforated plate (421) moves back and forth with a phase difference of a height corresponding to the length of the operating axis (426).

[0076] And, the discharge plate (427) is connected to the lower part of the perforated plate (421) so as to extend downward in line with the perforated plate (421).

[0077] This discharge plate (427) is formed in a box shape, and a discharge net (428) with a mesh structure for discharging separated brown rice is provided on its bottom surface.

[0078] Additionally, a lower hopper (429) is provided at the bottom of the discharge plate (427) to feed brown rice discharged through the discharge net (428) into the milling unit (500).

[0079]

[0080] As shown in FIG. 7, the milling unit (500) is a device for milling brown rice that has been separated from stones, provided adjacent to the stone removal unit (400).

[0081] This milling unit (500) includes a third elevator (510) that receives the brown rice discharged from the stone removal unit (400) and moves it upward, a grinder (520) that receives the brown rice discharged from the third elevator (510) and removes the seed coat of the brown rice, and a milling machine (550) that removes the rice bran from the rice from which the seed coat has been removed and processes it into white rice.

[0082] Here, the first and second elevators (220) (310), including the third elevator (510), are each devices for transporting paddy rice or brown rice, and as the first, second, and third elevators (220) (310) (510) are provided in a state where they are vertically erected on the module frame (110), spatial efficiency can be improved, and accordingly, the overall volume of the set-up rice milling device (100) can be minimized.

[0083] And, the grinder (520) and the rice mill (550) are provided in a stacked structure so that the rice with the seed coat removed from the grinder (520) is fed into the rice mill (550) by its own weight.

[0084] Meanwhile, the grinder (520) is implemented as a box-shaped main body as shown in FIG. 7, and a hopper connected to the third elevator (510) is provided on the upper part of the main body, and a discharge part for discharging ground rice is provided on the front of the main body.

[0085] And, as shown in FIGS. 8 and 9, the grinder (520) described above includes a grinding roller (530) rotatably installed inside, and a mesh (540) installed to surround the grinding roller (530) while being spaced apart from the grinding roller (530), with diagonal slots (541a) (542a) formed on its surface.

[0086] These grinding rollers (530) are formed from round bars and are connected to a motor on one side of the grinder (520) by a belt.

[0087] In particular, the grinding roller (530) is formed by mixing a mixture of silicon carbide (SiC) and alumina (Al2O3) with clay, powder of feldspar, and a binder, and then firing it at 1300 to 1400°C. The surface particle size of the grinding roller (530) formed in this way is indicated by a number representing the number of particles that can fit within a length of 25.4 mm, and the starting number used was 36.

[0088] Additionally, as shown in FIGS. 9 to 11, the mesh (540) is provided as a double mesh comprising a hollow inner mesh (541) that surrounds the grinding roller (530) and a hollow outer mesh (542) that surrounds the inner mesh (541), and the outer mesh (542) is fixedly coupled within the grinding machine (520), while the inner mesh (541) is coupled to be movable, i.e., rotatable, in the circumferential direction of the outer mesh (542) within the outer mesh (542).

[0089] And, on the surfaces of the inner mesh (541) and outer mesh (542) as described above, corresponding slots (541a) and (542a) are formed so as to be inclined in a diagonal direction, and these inner mesh slots (541a) and outer mesh slots (542a) are formed with the same length and diameter.

[0090] Accordingly, by moving (rotating) the inner mesh (541) within the outer mesh (542), the connected hole area (547) of both slots (541a) (542a) can be adjusted, and between the outer mesh (542) and the inner mesh (541), a guide means is provided to guide the movement of the inner mesh (541) in the circumferential direction while the inner mesh (541) is positioned within the outer mesh (542).

[0091] In particular, since the inner mesh slot (541a) and the outer mesh slot (542a) are formed to be inclined diagonally in the inner mesh (541) and outer mesh (542), respectively, as shown in FIG. 11 (a) and (b), as the inner mesh (541) moves in the circumferential direction within the outer mesh (542), the two slots (541a) (542a) are positioned in an overlapping state and then become misaligned, causing a phase difference to occur, thereby adjusting the length and width of the hole area (547) that communicates between the two slots (541a) (542a).

[0092] Thus, the length and width of the hole area (547) of both slots (541a) (542a) formed by the inner mesh slot (541a) and the outer mesh slot (542a) are adjusted as shown in drawings (a), (b), and (c) of FIG. 12, so that all types of rice—short-grain rice, medium-grain rice, and long-grain rice—can be processed and produced using a single rice milling device (100) according to the present invention, and accordingly, the compatibility of the rice milling device (100) is improved so that the rice milling device (100) can be used regardless of the rice cultivation region.

[0093] Here, the hatching area in drawings (a), (b), and (c) of FIG. 12 represents the overlapping hole area (547) of both slots (541a) (542a). Drawing (a) of FIG. 12 shows the hole area (547) of both slots (541a) (542a) adjusted to match medium-grain rice, (b) shows the hole area (547) of both slots (541a) (542a) adjusted to match short-grain rice, and (c) shows the hole area (547) of both slots (541a) (542a) adjusted to match long-grain rice. In addition to these examples, the hole area (547) of both slots (541a) (542a) can be adjusted more finely.

[0094] In addition, between the outer mesh (542) and the inner mesh (541) as described above, a driving means is provided to finely move the inner mesh (541) in the circumferential direction of the outer mesh (542) to adjust it.

[0095] As illustrated in FIGS. 10 and 11, the driving means is formed such that an inner mesh flange (541b) is formed at both ends of the inner mesh (541) and protrudes outwardly by being bent outward, and an incision (542c) is formed at the end of the outer mesh (542) so that the inner mesh flange (541b) is inserted through it by being cut in a circumferential direction, and an outer mesh flange (542b) is formed at the incision (542c) and is bent outwardly to face the inner mesh flange (541b) of the inner mesh (541), and a weld nut (544) is fixed to the outer mesh flange (542b).

[0096] A adjusting bolt (543) is inserted through and connected to both flanges (541b) (542b) as described above. The head portion of the adjusting bolt (543) is formed to be sized to be in contact with and engaged with the inner mesh flange (541b), and the shaft portion of the adjusting bolt (543) is fastened to the weld nut (544) of the outer mesh flange (542b). As a result, both flanges (541b) (542b) are supported by the adjusting bolt (543) and are prevented from spreading outward.

[0097] Additionally, an elastic member (545) that elastically supports both flanges (541b) (542b) is provided between the two flanges (541b) (542b) to elastically support both flanges (541b) (542b), thereby preventing the two flanges (541b) (542b) from narrowing in any way.

[0098] At this time, the elastic member (545) may be provided as a compression coil spring, and in this case, as the shaft portion of the adjustment bolt (543) is connected by penetrating the elastic member (545), the elastic member (545) can maintain its position between the two flanges (541b) (542b).

[0099] Accordingly, as the inner mesh (541) moves circumferentially within the outer mesh (542) as shown in FIGS. 11 and 12 by fastening or loosening the adjustment bolt (543) provided as above to the weld nut (544), the hole area (547) of both slots (541a) (542a) can be adjusted, and the movement of the inner mesh (541) is provided to be limited to the length of the cut portion (542c) of the outer mesh (542) into which the inner mesh flange (541b) is inserted.

[0100] And, as described above, a polishing chamber (546) is formed between the inner mesh (541) surrounding the grinding roller (530) and the grinding roller (530) to which brown rice is introduced and ground, and this polishing chamber (546) is maintained at a 10mm interval to maximize the grinding efficiency of the brown rice while minimizing damage to the brown rice.

[0101] Additionally, the rice milling machine (550) is a device that removes the bran from rice from which the seed coat has been removed in the grinder (520) and processes it into white rice, and may be equipped with a mesh (540) inside, similar to that of the grinder (520) described above.

[0102] Meanwhile, the sorting unit (600) is composed of a sorter that finally separates and discharges white rice, which has been polished in the rice milling machine (550), from foreign substances. A sorting net for separating and discharging white rice from foreign substances may be provided within this sorter.

[0103] And, the control unit (700) is a device for controlling each of the above-mentioned units, and can be provided to be vertically adjustable on the module frame (110) to match the operator's eye level for the operator's convenience of operation.

[0104]

[0105] The operational relationship of the rice set-type milling device according to the present invention as described above is explained.

[0106] First, the milling process using the present milling device (100) is processed into white rice as the rice moves in a flow as indicated by the arrow in FIG. 13.

[0107] That is, when rice is fed into the input hopper (210) of the sorting unit (200), the fed rice is moved upward through the first elevator (220) and flows into the sorting machine (230), and in the sorting machine (230), foreign substances fed together with the rice are discharged to the collector (130) by the suction force of the blower (120) and collected.

[0108] In this way, the rice that has been sorted once in the sorting machine (230) is discharged to the upper side of the sorting plate (240) at the bottom of the sorting machine (230), and after the second sorting is completed in which fine foreign substances are filtered out by moving back and forth by driving a cam (not shown) on the sorting plate (240), the rice that has been sorted twice is discharged to the second elevator (310) of the brown rice unit (300).

[0109] Then, the second elevator (310) moves the introduced rice upward and introduces it into the hulling machine (320), and in the hulling machine (320), the hull (pericarp) of the rice is removed by the impeller (321) to process it into brown rice, and then the processed brown rice is discharged to the stone separator (410) of the stone separator unit (400).

[0110] Afterwards, as the brown rice introduced into the stone separator (410) passes through the stone separator (410), large particulate stones or foreign substances contained in the brown rice are removed by primary stone separation, and the brown rice that has been removed by primary stone separation is discharged to the stone separator plate (420), and as it passes through the stone separator plate (420), small particulate stones or foreign substances are removed by secondary stone separation.

[0111] Specifically, when brown rice discharged from the stone separator (410) settles on the stone separator plate (420), the rotation shaft (425) is rotated through the drive pulley (424) to move the stone separator plate (420) back and forth and shake it, thereby separating small particulate stones or foreign substances contained in the brown rice by discharging them to the lower surface through the perforated plate (421) of the stone separator plate (420), and the brown rice rolls from the perforated plate (421) toward the discharge plate (427). Afterwards, the secondary stone-separated brown rice that has entered the discharge plate (427) is discharged to the lower surface through the discharge mesh (428) of the discharge plate (427), and the discharged brown rice is again discharged to the third elevator (510) of the milling unit (500) through the lower hopper (429).

[0112] In this process, foreign substances or dust that are separated in the first and second stages are introduced into the collector (130) through the blower (120) and collected.

[0113] Meanwhile, the brown rice introduced into the third elevator (510) is moved upward by the third elevator (510) and introduced into the grinder (520), and the brown rice introduced into the grinder (520) is introduced into the polishing chamber (546) between the grinding roller (530) and the mesh (540), and the seed coat of the brown rice is ground and peeled off by the rotation of the grinding roller (530).

[0114] In this way, the rice with the seed coat removed is discharged through the connected hole area (547) of the two slots (541a) (542a) of the mesh (540) and flows into the rice milling machine (550).

[0115] At this time, by moving the inner mesh (541) in the circumferential direction within the outer mesh (542) of the mesh (540) through which the rice passes, and adjusting the size of the connected hole area (547) of the two slots (541a) (542a), it becomes possible to process and produce short-grain rice, medium-grain rice, and long-grain rice as shown in drawings (a), (b), and (c) of FIG. 12 using a single rice milling device (100) according to the present invention.

[0116] Meanwhile, the rice discharged from the grinder (520) as described above is fed into the rice milling machine (550), and in the rice milling machine (550), the rice bran is finely ground and removed from the rice with the husk removed, thereby processing it into white rice and discharging it to the sorting unit (600). In the sorting unit (600), the polished rice is finally sorted from foreign substances and separated and discharged, thereby enabling the white rice to be commercialized.

[0117] Accordingly, in the present invention, a sorting unit (200), a brown rice unit (300), a stone removal unit (400), a milling unit (500), and a sorting unit (600) are all configured and set in a single milling device (100), and by adjusting the size of the connected hole area (547) between the two slots (541a) (542a) formed in the mesh (540), the milling device (100) can be easily used regardless of the cultivation area.

[0118]

[0119] Although the present invention has been described in detail through specific embodiments, this is for the purpose of specifically explaining the invention, and the invention is not limited thereto. It is evident that modifications or improvements can be made by those skilled in the art within the technical scope of the invention.

[0120] All simple variations or modifications of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be clarified by the appended claims.

[0121]

[0122] (Explanation of symbols)

[0123] 100 : Rice milling device 110 : Module frame

[0124] 120 : Blower 130 : Collector

[0125] 200 : Selection Unit 210 : Input Hopper

[0126] 220: Elevator No. 1 230: Separator

[0127] 231 : Discharge Hopper 240 : Sorting Plate

[0128] 241 : Discharge plate 300 : Brown rice unit

[0129] 310: 2nd Elevator 320: Microwave Machine

[0130] 321: Impeller 322: Discharge plate

[0131] 400 : Stone-breaking unit 410 : Stone breaker

[0132] 420 : Stone board 421 : Perforated board

[0133] 422 : Border 423 : Support

[0134] 424 : Drive pulley 425 : Rotating shaft

[0135] 426 : Actuating shaft 427 : Discharge plate

[0136] 428 : Discharge mesh 429 : Lower hopper

[0137] 500 : Rice Mill Unit 510 : 3rd Elevator

[0138] 520 : Grinding machine 530 : Grinding roller

[0139] 540 : Communication network 541 : Internal communication network

[0140] 541a : Inner mesh slot 541b : Inner mesh flange

[0141] 542 : Checkmate 542a : Checkmate slot

[0142] 542b : Outer mesh flange 542c : Cutout

[0143] 543 : Adjustment bolt 544 : Weld nut

[0144] 545 : Elastic member 546 : White chamber

[0145] 547 : Slot hole area 550 : Rice milling machine

[0146] 600: Sorting Unit 700: Control Unit

Claims

1. A sorting unit that filters out and removes foreign substances fed in along with rice using blower air; A brown rice unit connected to a sorting unit that supplies sorted rice and removes the husks from the supplied rice to process it into brown rice; A stone removal unit connected to a brown rice unit, which supplies processed brown rice and removes stones contained in the brown rice; A milling unit connected to a stone removal unit, which supplies stone-removed brown rice and grinds the hulls of the supplied brown rice to process it into white rice; A control unit that controls the above-mentioned units; including, A milling device in which the above-mentioned units are configured as a set in a single module frame.

2. In Claim 1, The stone removal unit is a rice milling device composed of a stone removal machine in which a stone removal plate for removing stones contained in brown rice is movably provided.

3. In Claim 2, A rice milling device comprising a stone separator, a perforated plate in which brown rice discharged from the stone separator is placed at an angle and small stones contained in the brown rice are discharged to the lower surface, and a discharge plate having a discharge net connected at an angle to the perforated plate to discharge brown rice transported from the perforated plate to the lower surface.

4. In Claim 2, The stone plate is equipped with a driving means for shaking the stone plate, and The driving means includes a rotating shaft rotatably coupled to a stone separator and rotating in forward and reverse directions, a driving pulley fixedly coupled to the rotating shaft and rotating together with the rotating shaft, and an operating shaft eccentrically connected to the rotating shaft and having one eccentrically connected end to the stone separator and rotatably connected to the stone separator to move and shake the stone separator. A milling device having a plurality of supports that rotatably connect the stone plate to the stone plate.

5. In Claim 1, A rice milling device comprising a milling unit that includes a grinder for removing the seed coat of brown rice and a rice milling machine that removes the bran from the rice with the seed coat removed to process it into white rice.

6. In Claim 5, The grinding machine includes a grinding roller rotatably installed inside it, and a mesh installed spaced apart from the grinding roller to surround it, with diagonal slots formed on its surface. A milling device comprising a double mesh of inner and outer meshes each having a slot, wherein the inner mesh or outer mesh can be moved from the other mesh to adjust the hole area of ​​the slot.

7. In Claim 6, An inner mesh flange protruding outwardly is formed at the end of the inner mesh, and An incision is formed at the end of the outer mesh so as to be cut in a circumferential direction to allow the inner mesh flange to be inserted through it, and an outer mesh flange is formed at the incision by being bent outward to face the inner mesh flange of the inner mesh, and a weld nut is fixedly provided on the outer mesh flange. An adjustment bolt is provided that is joined through both flanges and fastened to the weld nut of the outer mesh flange, A milling device that adjusts the connected hole area of ​​both slots by moving the inner mesh in the circumferential direction of the outer mesh as the adjustment bolt is tightened or loosened to the weld nut.

8. In Claim 7, A milling device having an elastic member between the two flanges that elastically supports the two flanges.

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