WO2022134791A1 - 单粒米定位磨中间段的留胚米加工机及胚完整的留胚大米 - Google Patents

单粒米定位磨中间段的留胚米加工机及胚完整的留胚大米 Download PDF

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Publication number
WO2022134791A1
WO2022134791A1 PCT/CN2021/124862 CN2021124862W WO2022134791A1 WO 2022134791 A1 WO2022134791 A1 WO 2022134791A1 CN 2021124862 W CN2021124862 W CN 2021124862W WO 2022134791 A1 WO2022134791 A1 WO 2022134791A1
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WO
WIPO (PCT)
Prior art keywords
rice
grinding
middle section
dropping
length
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PCT/CN2021/124862
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English (en)
French (fr)
Inventor
岳泉清
孟宪会
刘丽娜
Original Assignee
哈尔滨权清科技服务有限责任公司
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Publication of WO2022134791A1 publication Critical patent/WO2022134791A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02B—PREPARING GRAIN FOR MILLING; REFINING GRANULAR FRUIT TO COMMERCIAL PRODUCTS BY WORKING THE SURFACE
    • B02B3/00—Hulling; Husking; Decorticating; Polishing; Removing the awns; Degerming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02B—PREPARING GRAIN FOR MILLING; REFINING GRANULAR FRUIT TO COMMERCIAL PRODUCTS BY WORKING THE SURFACE
    • B02B7/00—Auxiliary devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02B—PREPARING GRAIN FOR MILLING; REFINING GRANULAR FRUIT TO COMMERCIAL PRODUCTS BY WORKING THE SURFACE
    • B02B7/00—Auxiliary devices
    • B02B7/02—Feeding or discharging devices

Definitions

  • the invention relates to an embryo-retaining rice processing machine and the processed embryo-retaining rice with complete embryos, in particular to an embryo-retaining rice processing machine in the middle section of a single-grain rice positioning mill and the embryo-retaining rice with complete embryos.
  • Germ-retained rice is a type of rice that retains the germ portion of the rice.
  • the composition of the embryo not only contains a lot of nutrients, but also has high medicinal value.
  • the food they eat is also the first to maintain health and good health. This is also the reason why retained germ rice has become more and more popular with consumers in recent years.
  • the conventional processing methods of rice with retained germ are to reduce or control the damage to the embryo by adjusting the amount of rice grinding, but in actual processing, due to the irregular shape of the rice, during the grinding process, the rice is Driven by the up and down or left and right grinding belts, there will be rolling. At this time, there will be irregular swinging of the rice position or mutual collision between brown rice, which may cause damage to the embryo, and it is impossible to guarantee the integrity of more than 90% of the embryo. retention rate.
  • the announcement number is CN106625828A
  • the patent name is an invention patent of a rice germ cutting device.
  • the announcement number is CN109938251A
  • the patent name is an invention patent for a kind of polished rice with full germ and its processing method and use.
  • the brown rice grains are arranged in a straight line Or ring-shaped, the pits set on the two flat plates bury the tip of the rice containing the embryo, and the pits set at both ends also serve as the rotation and positioning axis of the brown rice grains.
  • the aleurone layer covering the surface of the middle section is ground off to form a crystal clear appearance.
  • the pressing force of the flat plates on both sides of the tip of the brown rice is periodically changed, so that the brown rice grains sometimes turn and sometimes do not, so as to realize the grinding of the middle section of the brown rice.
  • the structure uses a flexible abrasive belt to grind the rice grains, when multiple rice grains are positioned by two plates at the same time, it cannot be guaranteed that all the rice grains are on the flat surface facing the flexible abrasive belt, and the upper and lower plates are not guaranteed during the rotation of the rice grains. After the pressure adjustment, it is impossible to ensure that all the rice grains rotate synchronously, which will cause some rice grains to grind to the aleurone layer of the rice grains, some not to the aleurone layer, or even some rice grains during the flexible abrasive belt grinding process.
  • the non-flat surface grinding amount is larger.
  • the processed germ rice has poor taste, low embryo retention rate and cannot adapt to the length of the rice.
  • the purpose of the present invention is to solve the problem that the existing processing device for leaving the whole embryo polished rice is not uniform in the grinding amount of rice grains, and the removal effect of the aleurone layer is poor, resulting in poor taste, low embryo retention rate and low embryo retention rate after processing. It cannot adapt to the simultaneous processing of brown rice of different lengths. Furthermore, there is provided an embryo-retaining rice processing machine for positioning and grinding the middle section of single-grain rice, and embryo-retaining rice with complete embryos.
  • the technical scheme of the present invention is: a grain-retaining rice processing machine in the middle section of single-grain rice positioning grinding, which includes a rice dropping device, a frame and a rice-loading plate, the rice-loading plate is horizontally slidably installed in the frame, and the rice dropping device is installed in the frame and Located on the upper end surface of the rice board, the left half of the rice board is provided with a plurality of rice dropping grooves in the form of an array; it also includes a pallet, which aligns the rice length direction and grinds the rice along the rice length direction.
  • the device, the device and the drive assembly for rotating the rice axially along the length of the rice and grinding the middle section of the rice, the left half of the pallet surface is sequentially provided with multiple groups of station units, and the multiple groups of station units are arranged in an array, each group
  • the station unit includes a rice-grinding station hole and a rice-dropping station hole with the same shape as the rice-dropping groove.
  • the length of the rice-grinding station hole is smaller than the length of the rice-dropping station hole.
  • the holes of the rice-dropping station are arranged adjacent to each other; the pallet is installed on the lower end surface of the rice-loading plate, the driving component is installed on one end surface of the rice-loading plate, and the driving component drives the rice-loading plate to reciprocate horizontally, aligning the length of the rice.
  • the device for grinding rice along the length of the rice and the device for rotating the rice axially along the length of the rice and grinding the middle section of the rice are installed in the frame by sliding up and down, and the device for aligning the length of the rice and grinding the rice along the length of the rice is located in the device.
  • the device for rotating the rice along the length of the rice and grinding the middle section of the rice is installed below the pallet, aligning the length of the rice and grinding the rice along the length of the rice.
  • the rotating shafts of the device that rotates and grinds the middle section of the rice are set perpendicular to each other.
  • the rice board moves horizontally to the left limit position
  • the rice falling groove coincides with the hole of the rice grinding station, aligns the rice length direction and grinds it along the rice length direction.
  • Each grinding wheel in the rice device grinds one grain of brown rice, so that the rice rotates axially along the length of the rice and grinds each grinding wheel in the device in the middle section of the rice while supporting one grain of brown rice in the rice falling trough.
  • the rice-dropping groove coincides with the rice-dropping station hole, the rice grains fall through the rice-dropping groove and the rice-dropping station hole, and when the rice-loading board continues to move to the right, the rice-dropping groove Coinciding with the rice dropping station section, when the rice dropping trough moves to the bottom of the rice dropping device, the rice dropping device is used to load rice in the rice dropping trough.
  • the invention also provides an embryo-retained rice with intact embryos.
  • the embryo-retained rice is composed of a left tip section, a middle section and a right tip section of rice along the length direction of the rice grain.
  • the middle section includes endosperm A1 component, the left tip section and One of the right cusps must contain all embryo A7 and endosperm A1 components and aleurone A6 components, while the other cusp contains endosperm A1 components and aleurone A6 components.
  • the present invention has the following effects:
  • the present invention can realize all-round grinding of the middle section of brown rice, and also can carry out all-round grinding of the middle section of rice.
  • the specific grinding process and principle are as follows:
  • the device 6 for aligning the rice lengthwise and grinding rice along the rice length direction includes a plurality of grinding wheels, each grinding wheel is in contact with the upper end of the middle section of a rice grain, thereby realizing the positioning of the upper part of a single rice grain, preventing the rice grains from Fly out of the rice trough during rotation; in addition, during the rotation process of the grinding wheel, multiple rice grains in the same row can be aligned on the left or right side of the rice trough, effectively avoiding shorter rice grains in the rice trough.
  • the position of the axis direction is not fixed, and the embryo is ground; the grinding wheel is in contact with the middle section of the rice grain, and the grinding wheel grinds the middle section of the rice grain along the length direction of the rice grain during the rotation process.
  • the device 7 for axially rotating the rice along the length of the rice and grinding the middle section of the rice includes a plurality of lower grinding wheels.
  • rice, and the lower grinding wheel is in contact with the middle section of the rice grains to ensure that the rice grains will not fall off during the transition between the rice loading station and the rice grinding station. 4 length, the rice grains will not fall off in the rice grinding station, and it can also effectively ensure that the rice grains will not be deflected when subjected to two mutually perpendicular forces, or the rice grinding station hole 5-1 and the lower grinding wheel will not be deflected.
  • the rotation axis of the lower grinding wheel is perpendicular to the rotation axis of the grinding wheel, that is to say, during the rotation process of the lower grinding wheel, it drives the grains of rice to rotate along its axis direction, and the rice grains are driven by the lower grinding wheel. Grinding the rice grains in the circumferential direction while rotating.
  • the present invention adopts the upper and lower grinding wheels (which refer to the grinding wheel in the device 6 for aligning and grinding rice along the length of the rice) and the bottom grinding wheel in a "cross" shape, and the bottom grinding wheel is staggered for grinding. Grinding, the middle section of the rice grain is subjected to rotation grinding and grinding in the length direction of the middle section, so that the rice grain of the present invention has no dead angle in the grinding process, the middle section of the rice grain can be ground 360 degrees, and the grinding effect is good, In the case of not damaging the embryo, the taste of the rice with the embryo is guaranteed, and the integrity rate of the embryo can reach more than 97%.
  • the present invention saves the screening device for three sections of rice and the grinding device for the middle section of the rice grain, and reduces the volume by at least half.
  • the germ-retained rice product processed by the present invention has complete rice grains, and the middle section of the rice grains has a small amount of aleurone layer, and a small amount of aleurone layer exists in the form of smooth sections or crossed scratches.
  • the taste is good, easy to promote, the wear amount of the middle section is small, and the processing loss of the whole retained germ is small.
  • the present invention does not need to screen the length of the rice grains, and can Different lengths of meters are processed in the same unit.
  • the present invention also simplifies the rice unloading structure. By setting three stations on the pallet, grinding is performed when the rice dropping groove and the rice grinding station hole 5-1 are overlapped, respectively.
  • the station holes 5-2 are overlapped to realize falling rice, the rice falling groove 4 is coincident with the rice falling station section 5-3 (that is, the upper end face of the pallet), and the rice falling device 1 is used to load rice and rice grains in the rice falling groove 4. It will not fall down, and the entire rice grain processing method forms a continuous flow operation, thereby improving the processing efficiency of rice with retained germs.
  • the rice dropping device of the present invention is completely different from the rice dropping method of the invention patent of a kind of polished rice that retains the whole germ and its processing method and application.
  • the present invention has a simple structure. Avoid the occurrence of failure problems such as unstable rice falling and low rice falling rate caused by complex structures such as brown rice arrangement devices.
  • the little aleurone layer left at the two ends of the germ-retained rice of the present invention does not affect cooking and taste, nor does it affect the absorption of the stomach and intestines, and can also constitute a reasonable combination of coarse grains and fine grains, and increase the consumption of rice.
  • Fig. 1 is a schematic diagram of the axial side of the overall structure of the present invention (in order to be able to see the structure of the lower grinding wheel assembly, the pallet is broken and shown).
  • Figure 2 is a schematic diagram of the structure of the rice grinding station.
  • Figure 3 is a schematic diagram of the unloading station.
  • Figure 4 is a schematic diagram of the rice loading station.
  • FIG. 5 is a front view of the lift drive assembly 6-2.
  • FIG. 6 is a side view of FIG. 5 .
  • 7 is a schematic diagram of the principle of the present invention using the upper grinding wheel and the lower grinding wheel to grind rice in a crisscross manner.
  • Fig. 8 is a schematic diagram of germ rice with intact rice grains whose middle section is a smooth section.
  • FIG. 1 is a schematic diagram of the axial side of the overall structure of the present invention (in order to be able to see the structure of the lower grinding wheel assembly, the pallet is broken and shown).
  • Figure 2 is a schematic diagram of
  • FIG. 9 is a schematic diagram of the rice with intact rice grains with crisscross scratches in the middle section.
  • Figure 10 is a schematic diagram of the structure of a complete rice (a rice is composed of traditional rice bran and endosperm A1, and traditional rice bran is composed of protective cortex and rice jelly.
  • the protective cortex is composed of rice husk A2, pericarp A3, seed coat A4, and outer
  • the blank milk is composed of A5, and the Mizhen is composed of the aleurone layer A6 and the embryo A7).
  • Embodiment 1 This embodiment will be described with reference to FIGS. 1 to 7.
  • the left side of the graph in FIG. 1 is the left half of the rice processing machine
  • the graph in FIG. The right side is the right half of the rice processing machine
  • the description of left or right here is not a limitation of the technical features of the actual rice processing machine.
  • the grain-retaining rice processing machine in the middle section of the single-grain rice positioning mill of this embodiment includes a rice falling device 1, a frame 2 and a rice loading board 3.
  • the rice loading board 3 is horizontally installed in the frame 2, and the rice falling device 1 is installed in the frame 2.
  • a plurality of rice-dropping grooves 4 are opened on the left half of the board surface of the rice-loading board 3 in the form of an array;
  • a device 6 for grinding rice along the length of a meter, a device 7 and a drive assembly 9 for rotating the rice axially along the length of the rice and grinding the middle section of the rice, and the left half of the plate surface of the pallet 5 is sequentially provided with multiple sets of workstation units.
  • the groups of station units are arranged in an array, and each group of station units includes a rice-grinding station hole 5-1, and a rice-dropping station hole 5-2 with the same shape as the opening of the rice-dropping groove 4, and the rice-grinding station hole 5-2.
  • the length of 5-1 is less than the length of the rice-dropping station hole 5-2, and the rice-grinding station hole 5-1 is arranged adjacent to the rice-dropping station hole 5-2;
  • the drive assembly 9 is installed on one side end face of the rice-loading board 3, and the drive assembly 9 drives the rice-loading board 3 to reciprocate horizontally, align the rice length direction and grind the rice along the rice length direction.
  • the device 7 for rotating the rice in the axial direction and grinding the middle section of the rice is installed in the frame 2 by sliding up and down.
  • the device 7 for axially rotating the rice length and grinding the middle section of the rice is installed under the pallet 5, and the device 6 for aligning the rice length direction and grinding rice along the rice length direction is the same as the device 6 for rotating the rice axially along the rice length and grinding the middle section of the rice.
  • the rotating shafts of the device 7 of the section are arranged vertically to each other.
  • Each grinding wheel in the device 6 for grinding rice grinds a grain of brown rice, so that the rice is rotated axially along the length of the rice and each grinding wheel in the device 7 for grinding the middle section of the rice supports a grain of brown rice in the rice falling groove 4 Grinding at the same time, when the rice-loading plate 3 starts to move to the right, the rice-dropping groove 4 coincides with the rice-dropping station hole 5-2, and the rice grains fall through the rice-dropping groove 4 and the rice-dropping station hole 5-2. When the rice loading board 3 continues to move to the right, the rice dropping trough 4 overlaps with the rice dropping station section 5-3. When the rice dropping trough 4 moves to the bottom of the rice dropping device 1, the rice dropping device 1 is used to load rice in the rice dropping trough 4. .
  • the rice loading plate 3 of this embodiment is provided with the same rice dropping grooves on the left and right sides, the rice grinding station holes 5-1 on the left and right support plates 5, and a hole 5-1 with the rice dropping groove 4.
  • the hole 5-2 of the rice drop station and the rice drop station section 5-3 of the same shape are symmetrically arranged, which is convenient to improve the processing efficiency of the rice with the remaining germ.
  • Embodiment 2 This embodiment will be described with reference to FIG. 1 to FIG. 4 .
  • the rice dropping device 1 of this embodiment includes a rice dropping bin 1-1, a rice dropping wheel 1-2, and a rice dropping brush 1-3.
  • the wheel 1-2 is rotatably installed in the rice drop bin 1-1
  • the rice drop brush 1-3 is installed on the lower part of the left and right sides of the rice drop bin 1-1
  • the rice drop brush 1-3 is in contact with the rice loading plate 3.
  • This arrangement facilitates slow loading of rice into the falling rice bin, and prevents the rice grains brought by the rapid and large amount of rice pouring from accumulating under the falling rice bin 1-1, which affects the accurate falling of rice from the rice falling board.
  • the power of the wheels 1-2 can be controlled by a motor or a manual crank handle.
  • the rice-dropping brush 1-3 scrapes the rice grains on the rice-dropping board smoothly into the rice-dropping trough with the movement of the rice-loading board, and fills the rice-dropping board.
  • the rate reaches more than 89%, and the falling rice structure is simple and reliable.
  • Other components and connection relationships are the same as in the first embodiment.
  • Embodiment 3 The present embodiment will be described with reference to FIGS. 1 to 4 .
  • the rice falling wheel 1-2 in this embodiment includes a rotating shaft and a plurality of moving blades.
  • the rotating shaft is rotatably installed in the falling rice bin 1-1. Mounted on the shaft in a circular array.
  • the blades are arranged in an arc shape, which not only undertakes the rice grains, but also prevents a large number of rice grains from accumulating.
  • Other compositions and connection relationships are the same as in the second embodiment.
  • Embodiment 4 This embodiment will be described with reference to FIG. 1 to FIG. 4 .
  • the rice dropping slot 4 in this embodiment is a rectangular through slot or an oval through slot, and the length direction of the rice dropping slot 4 is perpendicular to the length direction of the rice mounting plate 3 . .
  • This arrangement facilitates the smooth entry of rice grains into the rice falling trough.
  • Other components and connection relationships are the same as in the third embodiment.
  • Embodiment 5 This embodiment will be described with reference to FIG. 1 to FIG. 4 .
  • the length of the rice falling groove 4 in this embodiment is 1 mm-2 mm greater than that of brown rice. This arrangement is convenient for the grains of rice to enter into the rice falling trough quickly and smoothly.
  • Other compositions and connection relationships are the same as in the first, second, third or fourth embodiment.
  • Embodiment 6 This embodiment will be described with reference to FIG. 1.
  • the device 6 for aligning the rice length direction and grinding rice along the rice length direction and the device 7 for rotating the rice along the rice length axis and grinding the middle section of the rice according to this embodiment The structure is the same, wherein, the device 6 for aligning the rice length direction and grinding rice along the rice length direction includes a frame body 6-1, a lift drive assembly 6-2, a plurality of lift rails 6-3, and a plurality of grinding wheel shafts 6 -4.
  • Multiple grinding wheels 6-5, grinding wheel driving motors 6-6 and grinding wheel transmission components, multiple lifting slide rails 6-3 and lifting driving components 6-2 are vertically installed in the frame 2, and the frame body 6-1 slides Installed on a plurality of lifting slides 6-3, a plurality of grinding wheel shafts 6-4 are installed in the frame body 6-1 for parallel rotation, and a plurality of grinding wheels 6-5 are installed on each grinding wheel shaft 6-4, and the grinding wheel drive motor 6-6 is installed on the frame body 6-1, the grinding wheel drive assembly is installed in the frame body 6-1, and the output shaft of the grinding wheel drive motor 6-6 is connected with the grinding wheel drive assembly, and the grinding wheel drive assembly drives a plurality of grinding wheel shafts 6- 4 Turn. In this way, the grinding wheel with the same number of rice-dropping grooves is provided to realize the separate positioning and grinding of the rice grains.
  • Other compositions and connection relationships are the same as in the first, second, third, fourth or fifth embodiment.
  • the grinding wheel drive assembly of this embodiment is realized by a sprocket chain drive pair.
  • Embodiment 7 This embodiment is described with reference to FIG. 1 , FIG. 5 and FIG. 6 .
  • the lift drive assembly 6-2 of this embodiment includes a housing 6-2-1, a lift drive motor 6-2-2 and a cam 6- 2-3, the housing 6-2-1 is installed in the frame 2, the lift drive motor 6-2-2 is installed in the housing 6-2-1, and the output shaft of the lift drive motor 6-2-2 protrudes
  • the shell 6-2-1 and the cam 6-2-3 are installed on the output shaft of the lift drive motor 6-2-2, and the outer contour of the cam 6-2-3 is connected with the frame body 6-1.
  • Embodiment 8 This embodiment will be described with reference to FIGS. 1 to 4 .
  • the drive assembly 9 of this embodiment includes a rice plate drive motor 9-1, a balance wheel 9-2, a swing rod 9-3 and a connecting block 9-4.
  • the rice board driving motor 9-1 is vertically installed in the frame 2, the output shaft of the rice board driving motor 9-1 is connected with the balance wheel 9-2, one end of the swing rod 9-3 is connected with the balance wheel 9-2, and the swing rod The other end of 9-3 is connected with the connecting block 9-4 installed on the end face of the rice-loading board 3 side.
  • the horizontal movement distance of the falling rice board can be realized by the size of the diameter of the balance wheel 9-2, which saves space, and other components and connection relationships are the same as any of the first to seventh embodiments.
  • Embodiment 9 This embodiment will be described with reference to FIG. 1 .
  • the device 6 for aligning the rice length direction and grinding the rice along the rice length direction precedes the device 7 for rotating the rice along the rice length axis and grinding the middle section of the rice.
  • the start time difference of the two grinding wheel drive motors 6-6 is 0.5-2s.
  • This arrangement is convenient to align the rice grains first, and then grind the rice grains in the circumferential direction, so as to ensure that the device 7 that makes the rice rotate axially along the length of the rice and grinds the middle section of the rice is ground.
  • the middle section after the rice grains are arranged realizes the grinding process without damaging the embryo.
  • Other compositions and connection relationships are the same as any one of Embodiments 1 to 8.
  • the start-up time of the grinding wheel drive motor 6-6 is preset and controlled by a delay device.
  • Embodiment 10 This embodiment will be described with reference to FIGS. 1 to 4.
  • This embodiment also includes a rice receiving groove 11, which can be pulled and installed in the frame 2, and the rice receiving groove 11 is located so that the rice is along the length of the meter. Directly below the device 7 that rotates and grinds the middle section of the rice axially.
  • This arrangement is convenient to take out the processed germ-retained rice from the rice receiving tank 11 according to the user's needs and habits, or it can be directly connected to an electric rice cooker for automatic rice washing to directly wash the rice and cook the rice.
  • Other compositions and connection relationships are the same as any one of Embodiments 1 to 8.
  • Embodiment 11 The present embodiment will be described in conjunction with FIG. 8 to FIG. 10.
  • a kind of embryo-retained rice of the present embodiment the embryo-retained rice is composed of the left tip section 12, the middle section 13 and the rice grain along the length direction of the rice grain.
  • the right tip section 14 is composed of the middle section 13 containing the endosperm A1 component, the left tip section 12 and the rice right tip section 14 must have a tip section that contains all the embryo A7 and endosperm A1 components and the aleurone layer A6 components, and the other A tip section contains the endosperm A1 component and the aleurone layer A6 component.
  • Embodiment 12 This embodiment will be described with reference to FIGS. 8 to 10 .
  • the outer surface of the middle section 13 of this embodiment also includes an aleurone layer with a thickness of less than 8 microns. This setting does not affect the cooking and taste, let alone the absorption of the stomach and intestines, it can also constitute a reasonable combination of coarse grains and fine grains, and also increases the amount of rice used.
  • Other compositions and connection relationships are the same as any one of Embodiments 1 to 11.
  • Step 1 Loading rice:
  • the rice-dropping groove 4 on the rice-loading plate 3 will first overlap with the rice-dropping station hole 5-2.
  • the device 7 that rotates the rice axially along the rice length and grinds the middle section of the rice also has a supporting effect on the rice grains, so the rice grains will not fall.
  • the device 7 that rotates the rice axially along the rice length and grinds the middle section of the rice has the highest grinding wheel.
  • the point is 8-15 microns lower than the lower end surface of the pallet 5, which can support the rice grains without interfering with the pallet 5, and the lower grinding wheel does not rotate at this time.
  • the drive assembly 9 stops, and the rice loading board 3 stops moving accordingly.
  • the rice dropping groove 4 just coincides with the rice grinding station hole 5-1.
  • the device 6 that aligns the rice length direction and grinds rice along the rice length direction moves down, and the lowest point of the grinding wheel extends into the rice dropping groove. 0.1-0.3mm, and start the grinding wheel in the device 6 for aligning and grinding rice along the length of the rice.
  • the grinding point of the grinding wheel in the device 7 that rotates the rice along the rice length and grinds the middle section of the rice is moved 1-1.5mm to the side where the rice grains are aligned, to ensure that what the lower grinding wheel grinds is exactly the middle section of the rice grains , the moving position of the lower grinding wheel assembly is pre-set, because the length of the rice grinding station hole 5-1 is smaller than the length of the rice falling station hole 5-2, it can effectively prevent the rice grains from falling.
  • 0.5-2 seconds turn on the grinding wheel in the device 7 that rotates the rice axially along the length of the rice and grinds the middle section of the rice for grinding.
  • the grinding wheel drives the rice grains to rotate, and simultaneously grinds the circumferential direction of the rice grains. In this way, it is ensured that the middle part of the rice grain is ground, and the embryo is not damaged.
  • the pallet 5 of the present invention is made of stainless steel with a thickness of 0.5-1.5mm Steel plate
  • the lower grinding wheel the grinding wheel in the device 7 that makes the rice rotate axially along the length of the rice and grinds the middle section of the rice
  • the grinding wheel assembly moves up, the rice mounting plate 3 moves to the right, and at the same time, the rice is rotated axially along the length of the rice and the device 7 in the middle section of the rice grinding moves downward.
  • the processed rice grains are unloaded.
  • the lower grinding wheel assembly completes a descending cycle, it returns to the original position to prepare for the next group of supporting rice grains and grinding rice.
  • Step 4 Load the rice:

Abstract

一种单粒米定位磨中间段的留胚米加工机及胚完整的留胚大米，将米长度方向排齐并沿米长度方向磨米的装置（6）和使米沿米长度轴向旋转并磨米中间段的装置（7）的砂轮转轴（6-4）互相垂直设置；胚完整的留胚大米的中间段（13）包含胚乳（A1）成份，米左尖段（12）和米右尖段（14）中必有一个尖段是包含全部胚（A7）和胚乳（A1）成份以及糊粉层（A6）成份的，而另一个尖段是包含胚乳（A1）成份及糊粉层（A6）成份的。

Description

单粒米定位磨中间段的留胚米加工机及胚完整的留胚大米 技术领域
本发明涉及一种留胚大米加工机及其加工出的胚完整的留胚大米，具体涉及一种单粒大米定位磨中间段的留胚大米加工机及胚完整的留胚大米。
 背景技术
留胚米是保留米的胚部分的一种米。而胚的组成成份中，不但含有大量的营养物质，还具有较高的药用价值。随着人们保健意识的不断提高，所食之物也以养生和有益健康为首要。这也是留胚米近年越来越受消费者欢迎的原因。
常规的留胚米加工方法都是通过调整对稻米磨削量的方式来减少或者控制对胚的损伤，但实际加工中，由于稻米的形状并不规则，所以在磨削过程中，稻米在被上下或左右磨削带的带动下会产生滚动，这时会产生米位置的不规则摆动或糙米之间的相互碰撞，都可能会对胚造成损伤，无法保证胚百分之九十以上的完整留存率。
为此，公告号为CN106625828A，专利名称为一种稻米胚芽切割装置的发明专利，通过用切刀将米粒切割成三段的方式，来保留米尖部分的胚，真正实现了对胚的完整保留，同时，将中间段进行收集并磨削，保证加工后的胚芽米的口感。适用于煮粥、煮米饭和做成迷糊。
但为了获得完整的米粒，公告号为CN109938251A，专利名称为一种留全胚芽的精米及其加工方法和用途的发明专利，通过把糙米粒夹在两块平板之间，糙米粒排列成直线状或环状，两块平板上设置的凹坑把包含有胚的米尖端处埋藏住，同时两端设置的凹坑还作为糙米粒的旋转定位轴心，柔性砂带高速运转，把没有被包覆住的中间段表面的糊粉层磨除，形成晶莹剔透的外观。该加工方式通过夹持糙米米尖两侧的平板压紧力周期性变化，使糙米粒时而转，时而不转，进而实现对糙米中间段的磨削。
由于该结构采用的是柔性砂带对米粒进行磨削，在多个米粒同时通过两块平板进行定位时，无法保证所有米粒均处于扁平面朝向柔性砂带，以及米粒在转动过程中，上下平板的压力调整后，无法保证所有米粒的转动是同步的，这都将导致米粒在柔性砂带磨削过程中有的磨到米粒糊粉层，有的未磨到糊粉层，甚至有的米粒非扁平面磨削量较大。
综上所述，现有的留全胚芽精米的加工装置由于米粒磨削量不均匀，糊粉层去除效果差，致使其加工后的胚芽米存在口感差、胚留整率低以及不能适应长短不同的糙米同时加工的问题。
 技术问题
本发明的目的是为了解决现有的留全胚精米的加工装置由于米粒磨削量不均匀，糊粉层去除效果差，致使其加工后的留胚米存在口感差、胚留整率低以及不能适应长短不同的糙米同时加工的问题。进而提供一种单粒米定位磨中间段的留胚米加工机及胚完整的留胚大米。
 技术解决方案
本发明的技术方案是：单粒米定位磨中间段的留胚米加工机，它包括落米装置、框架和装米板，装米板水平滑动安装在框架内，落米装置安装在框架内并位于装米板的上端面上，装米板板面的左半部上以阵列的形式开设有多个落米槽；它还包括托板、将米长度方向排齐并沿米长度方向磨米的装置、使米沿米长度轴向旋转并磨米中间段的装置和驱动组件，托板板面的左半部依次设有多组工位单元，多组工位单元排成阵列，每组工位单元包括一个磨米工位孔、和一个与落米槽开孔形状相同的落米工位孔，磨米工位孔的长度小于落米工位孔的长度，磨米工位孔与落米工位孔相邻设置； 托板安装在装米板的下端面上，驱动组件安装在装米板的一侧端面上，且驱动组件带动装米板水平往复运动，将米长度方向排齐并沿米长度方向磨米的装置和使米沿米长度轴向旋转并磨米中间段的装置均上下滑动安装在框架内，且将米长度方向排齐并沿米长度方向磨米的装置位于装米板的上方，使米沿米长度轴向旋转并磨米中间段的装置安装在托板的下方，将米长度方向排齐并沿米长度方向磨米的装置和使米沿米长度轴向旋转并磨米中间段的装置的转轴互相垂直设置，当装米板水平运动到左侧极限位置时，落米槽与磨米工位孔重合，将米长度方向排齐并沿米长度方向磨米的装置中的每个砂轮对一粒糙米磨削，使米沿米长度轴向旋转并磨米中间段的装置中的每个砂轮在落米槽中对一粒糙米承托的同时磨削，当装米板开始向右侧运动时，落米槽与落米工位孔重合，米粒穿过落米槽和落米工位孔下落，装米板继续向右侧运动时，落米槽与落米工位段重合，落米槽移动到落米装置下方时通过落米装置在落米槽内装米。
本发明还提供了一种胚完整的留胚大米，留胚大米沿其米粒长度方向由米左尖段、中间段和米右尖段组成，中间段包含胚乳A1成份，米左尖段和米右尖段中必有一个尖段是包含全部胚A7和胚乳A1成份以及糊粉层A6成份的，而另一个尖段是包含胚乳A1成份及糊粉层A6成份的。
本发明与现有技术相比具有以下效果：
1、本发明能够实现对糙米中间段的全方位磨削，同样也可以对稻米中间段进行全方位磨削。具体磨削过程和原理如下：
首先，将米长度方向排齐并沿米长度方向磨米的装置6中包含有多个砂轮，每个砂轮都与一个米粒的中间段上端接触，进而实现对单个米粒上部的定位，防止米粒在转动过程中从米槽中飞出；另外，砂轮在转动过程中，能够将同一排的多个米粒在米槽中靠左侧或者靠右侧排齐，有效避免较短的米粒在米槽中轴线方向的位置不固定，而磨到胚；砂轮与米粒的中间段接触，砂轮在转动过程中，沿米粒的长度方向对米粒的中间段进行磨削。
其次，使米沿米长度轴向旋转并磨米中间段的装置7中包括多个下砂轮，每个下砂轮都在落米槽4与磨米工位孔5-1重合时，承接一个粒米，且下砂轮与米粒的中间段接触，保证米粒在装米工位与磨米工位过渡的过程中不会掉落，同时，由于磨米工位孔5-1的长度小于落米槽4的长度，米粒在磨米工位也不会掉落，还能够有效的保证米粒在受到相互垂直的两个力的时候，不会造成偏转或者在磨米工位孔5-1与下砂轮之间的缝隙中甩出；另外，下砂轮的转动轴与砂轮的转动轴垂直，也就是说下砂轮在转动过程中，是带动粒米沿其轴线方向自转的，米粒在下砂轮的带动下，边自转边磨削米粒的圆周方向。
正是由于本发明采用了单粒米上下单独定位，且呈“十字”形的上砂轮（指将米长度方向排齐并沿米长度方向磨米的装置6中的砂轮）和下砂轮交错磨削，对米粒的中间段进行自转磨削和中间段长度方向的磨削，使得本发明的米粒在磨削过程中，没有死角，米粒的中间段能够360度进行磨削，磨削效果好，在不损伤胚的情况下，保证了留胚米的口感，而且胚的完整率能够达到97%以上。
2、本发明相比于现有的切粒米两端来保留完整胚的加工方式，节省了三段米的筛分装置，以及米粒中间段的磨削装置，体积缩小至少一半。
3、本发明加工后的留胚米产品，米粒完整，而且米粒中间段带有少量糊粉层，少量糊粉层以光滑段或十字交叉划痕的形式存在，在保留完整胚的前提下，口感好，易于推广，中间段的磨损量小，整个留胚米的加工损失小。
4、本发明相比于现有的切米两端来保留完整胚的加工方式或者一种留全胚芽的精米及其加工方法和用途的发明专利技术，无需对米粒的长短进行筛选，能够在同一台装置内加工不同长度的米。
5、本发明也精简了卸米结构，通过在托板上设置三个工位，来分别实现落米槽与磨米工位孔5-1重合时，进行磨削，落米槽与落米工位孔5-2重合，实现落米，落米槽4与落米工位段5-3（也就是托板的上端面）重合，通过落米装置1在落米槽4内装米，米粒不会掉落下来，整个米粒加工方式形成连续化流水作业，进而提高留胚米加工效率。
6、本发明的落米装置与一种留全胚芽的精米及其加工方法和用途的发明专利的落米方式截然不同，本发明结构简单，通过落米刷将米粒扫到落米槽中，避免采用糙米排列装置等复杂结构带来的落米不稳定和落米率低等故障问题的出现。
7、本发明留胚米两尖端留下的少许糊粉层不影响蒸煮和口感，更不影响肠胃的吸收，还可构成粗粮与细粮的合理搭配，又增加了米的食用量。
附图说明 
图1是本发明的整体结构轴侧示意图（为了能够看清楚下砂轮组件的结构，将托板断开示意）。图2是磨米工位结构示意图。图3是卸米工位示意图。图4是装米工位示意图。图5是升降驱动组件6-2的主视图。图6是图5的侧视图。图7是本发明采用上砂轮和下砂轮以十字交叉的方式磨米的原理示意图。图8是中间段为光滑段的米粒完整的胚芽米示意图。图9是中间段为带有十字交叉划痕的米粒完整的留胚米示意图。图10是完整的稻子的结构示意图（一颗稻子由传统的米糠和胚乳A1组成，传统的米糠又由保护皮层和米珍组成，保护皮层由稻壳A2、果皮A3、种皮A4、和外坯乳A5组成，米珍由糊粉层A6和胚A7组成）。
 本发明的实施方式
具体实施方式一：结合图1至图7说明本实施方式，在本发明中，为了描述和理解的方便，以图1中图形的左侧为大米加工机的左半部，以图1中图形的右侧为大米加工机的右半部，此处左或右的描述不作为实际大米加工机的技术特征的限定。
本实施方式的单粒米定位磨中间段的留胚米加工机包括落米装置1、框架2和装米板3，装米板3水平滑动安装在框架2内，落米装置1安装在框架2内并位于装米板3的上端面上，装米板3板面的左半部上以阵列的形式开设有多个落米槽4；它还包括托板5、将米长度方向排齐并沿米长度方向磨米的装置6、使米沿米长度轴向旋转并磨米中间段的装置7和驱动组件9，托板5板面的左半部依次设有多组工位单元，多组工位单元排成阵列，每组工位单元包括一个磨米工位孔5-1、和一个与落米槽4开孔形状相同的落米工位孔5-2，磨米工位孔5-1的长度小于落米工位孔5-2的长度，磨米工位孔5-1与落米工位孔5-2相邻设置； 托板5安装在装米板3的下端面上，驱动组件9安装在装米板3的一侧端面上，且驱动组件9带动装米板3水平往复运动，将米长度方向排齐并沿米长度方向磨米的装置6和使米沿米长度轴向旋转并磨米中间段的装置7均上下滑动安装在框架2内，且将米长度方向排齐并沿米长度方向磨米的装置6位于装米板3的上方，使米沿米长度轴向旋转并磨米中间段的装置7安装在托板5的下方，将米长度方向排齐并沿米长度方向磨米的装置6和使米沿米长度轴向旋转并磨米中间段的装置7的转轴互相垂直设置，当装米板3水平运动到左侧极限位置时，落米槽4与磨米工位孔5-1重合，将米长度方向排齐并沿米长度方向磨米的装置6中的每个砂轮对一粒糙米磨削，使米沿米长度轴向旋转并磨米中间段的装置7中的每个砂轮在落米槽4中对一粒糙米承托的同时磨削，当装米板3开始向右侧运动时，落米槽4与落米工位孔5-2重合，米粒穿过落米槽4和落米工位孔5-2下落，装米板3继续向右侧运动时，落米槽4与落米工位段5-3重合，落米槽4移动到落米装置1下方时通过落米装置1在落米槽4内装米。
本实施方式的装米板3在左侧和右侧均设置有相同的落米槽，左右两侧的托板5上的磨米工位孔5-1、和一个与落米槽4开孔形状相同的落米工位孔5-2以及落米工位段5-3对称设置，便于提高留胚米的加工效率。
具体实施方式二：结合图1至图4说明本实施方式，本实施方式的落米装置1包括落米仓1-1、落米拨轮1-2和落米刷1-3，落米拨轮1-2转动安装在落米仓1-1内，落米刷1-3安装在落米仓1-1左右两侧的下部，且落米刷1-3与装米板3相接触。如此设置，便于缓慢的向落米仓内装米，防止快速大量的倒米带来的米粒在落米仓1-1下部堆积，影响落米板准确落米，另外，本实施方式的落米拨轮1-2的动力可以采用电机，也可以采用手动的摇柄来控制，落米刷1-3将落米板上的米粒随着装米板的移动平整刮到落米槽中，落米填充率达到89%以上，而且落米结构简单，可靠。其它组成和连接关系与具体实施方式一相同。
具体实施方式三：结合图1至图4说明本实施方式，本实施方式落米拨轮1-2包括转轴和多个拨叶，转轴转动安装在落米仓1-1内，多个拨叶以环形阵列的方式安装在转轴上。如此设置，拨叶设置成弧形，在对米粒起到承接的同时，防止米粒大量堆积。其它组成和连接关系与具体实施方式二相同。
具体实施方式四：结合图1至图4说明本实施方式，本实施方式的落米槽4为矩形通槽或椭圆形通槽，落米槽4的长度方向垂直于装米板3的长度方向。如此设置，便于米粒顺利的进入到落米槽中。其它组成和连接关系与具体实施方式三相同。
具体实施方式五：结合图1至图4说明本实施方式，本实施方式的落米槽4的长度大于糙米1mm-2mm。如此设置，便于粒米能够快速顺利的进入到落米槽中。其它组成和连接关系与具体实施方式一、二、三或四相同。
具体实施方式六：结合图1说明本实施方式，本实施方式的将米长度方向排齐并沿米长度方向磨米的装置6和使米沿米长度轴向旋转并磨米中间段的装置7的结构相同，其中，将米长度方向排齐并沿米长度方向磨米的装置6包括架体6-1、升降驱动组件6-2、多个升降滑轨6-3、多根砂轮转轴6-4、多个砂轮6-5、砂轮驱动电机6-6和砂轮传动组件，多个升降滑轨6-3和升降驱动组件6-2竖直安装在框架2内，架体6-1滑动安装在多个升降滑轨6-3上，多根砂轮转轴6-4平行转动安装在架体6-1内，每根砂轮转轴6-4上安装有多个砂轮6-5，砂轮驱动电机6-6安装在架体6-1上，砂轮传动组件安装在架体6-1内，且砂轮驱动电机6-6的输出轴与砂轮传动组件连接，砂轮传动组件带动多根砂轮转轴6-4转动。如此设置，通过设有与落米槽数量相同的砂轮来实现对米粒的单独定位磨削。其它组成和连接关系与具体实施方式一、二、三、四或五相同。
本实施方式的砂轮传动组件采用链轮链条传动副来实现。
具体实施方式七：结合图1、图5和图6说明本实施方式，本实施方式的升降驱动组件6-2包括壳体6-2-1、升降驱动电机6-2-2和凸轮6-2-3，壳体6-2-1安装在框架2内，升降驱动电机6-2-2安装在壳体6-2-1内，且升降驱动电机6-2-2的输出轴伸出壳体6-2-1，凸轮6-2-3安装在升降驱动电机6-2-2的输出轴上，凸轮6-2-3的外轮廓与架体6-1连接。如此设置，便于带动将米长度方向排齐并沿米长度方向磨米的装置6或使米沿米长度轴向旋转并磨米中间段的装置7实现升降移动，升降的位移通过凸轮6-2-3的轮廓线来设定和保证。其它组成和连接关系与具体实施方式一、二、三、四、五或六相同。
具体实施方式八：结合图1至图4说明本实施方式，本实施方式的驱动组件9包括米板驱动电机9-1、摆轮9-2、摆杆9-3和连接块9-4，米板驱动电机9-1竖直安装在框架2内，米板驱动电机9-1的输出轴与摆轮9-2连接，摆杆9-3的一端与摆轮9-2连接，摆杆9-3的另一端与安装在装米板3侧端面上的连接块9-4连接。如此设置，通过对摆轮9-2直径的大小来实现落米板水平移动的距离，节省空间，其它组成和连接关系与具体实施方式一至七中任意一项相同。
具体实施方式九：结合图1说明本实施方式，本实施方式将米长度方向排齐并沿米长度方向磨米的装置6先于使米沿米长度轴向旋转并磨米中间段的装置7启动，二者的砂轮驱动电机6-6的启动时差为0.5-2s。如此设置，便于在磨米时，先将米粒进行排齐，然后在对米粒圆周方向进行磨削，以此来保证使米沿米长度轴向旋转并磨米中间段的装置7磨到的是米粒排齐后的中间段，实现不损伤胚的磨削加工。其它组成和连接关系与具体实施方式一至八中任意一项相同。
本实施方式在实际使用时，通过对砂轮驱动电机6-6的启动时间进行预先设定，通过延时器来控制实现。
具体实施方式十：结合图1至图4说明本实施方式，本实施方式还包括接米槽11，接米槽11可抽拉安装在框架2内，且接米槽11位于使米沿米长度轴向旋转并磨米中间段的装置7的正下方。如此设置，便于根据使用者的需求和习惯，将加工后的留胚米从接米槽11中取出使用，也可以直接与自动淘米的电饭煲连接，直接淘米煮饭。其它组成和连接关系与具体实施方式一至八中任意一项相同。
具体实施方式十一：结合图8至图10说明本实施方式，本实施方式的一种胚完整的留胚大米，留胚大米沿其米粒长度方向由米左尖段12、中间段13和米右尖段14组成，中间段13包含胚乳A1成份，米左尖段12和米右尖段14中必有一个尖段是包含全部胚A7和胚乳A1成份以及糊粉层A6成份的，而另一个尖段是包含胚乳A1成份及糊粉层A6成份的。
具体实施方式十二：结合图8至图10说明本实施方式，本实施方式的中间段13的外表面还包含有小于8微米厚的糊粉层。如此设置，不影响蒸煮和口感，更不影响肠胃的吸收，还可构成粗粮与细粮合理搭配，还增加了米的使用量。其它组成和连接关系与具体实施方式一至十一中任意一项相同。
结合图1至图10说明本发明的工作原理：
第一步：装米：
启动驱动组件9，驱动装米板3向左侧移动，装米板3上的落米槽4下端口被托板遮挡住，洒落到装米板3上的米粒，在落米刷1-3的作用下将米粒挡落到落米槽4内，同时，转动的落米拨轮1-2，慢慢将上半部分中的米粒倒入到落米仓1-1下半部分内。
第二步：磨米：
驱动组件9带动装米板3向左侧移动并接近左端极限位置处时，装米板3上的落米槽4首先会与落米工位孔5-2重合，这时，由于使米沿米长度轴向旋转并磨米中间段的装置7对米粒也有承托作用，所以米粒不会掉落，而此时的使米沿米长度轴向旋转并磨米中间段的装置7的砂轮最高点低于托板5的下端面8-15微米，在不与托板5干涉的前提下，还能够承托住米粒，此时的下砂轮是不转动的。
当落米板继续向左侧移动到左端极限位置处时，驱动组件9停止，装米板3相应停止运动。落米槽4恰好与磨米工位孔5-1重合，此时，将米长度方向排齐并沿米长度方向磨米的装置6下移，且砂轮的最低点伸入到落米槽中0.1-0.3mm，并启动将米长度方向排齐并沿米长度方向磨米的装置6中的砂轮转动，砂轮沿米粒长度方向将米粒在落米槽的左侧或右侧进行排齐，使米沿米长度轴向旋转并磨米中间段的装置7中的砂轮的磨削点向米粒排齐一侧移动1-1.5mm，用来保证下砂轮所磨削到的正是米粒的中间段，下砂轮组件的移动位置为事先设定好的，由于磨米工位孔5-1的长度小于落米工位孔5-2的长度，因此能够有效的防止米粒掉落。0.5-2秒后，开启使米沿米长度轴向旋转并磨米中间段的装置7中的砂轮进行磨削，砂轮带动米粒自转，对米粒的圆周方向同时进行磨削。以此来保证磨的是米粒中间段，且不损伤胚。
由于装米板3上最左侧的落米槽4在向左侧移动过程中，需要经过多个落米工位孔5-2，由于本发明托板5是厚度为0.5-1.5mm的不锈钢钢板，落米工位孔5-2下端在装米板3在整个左移过程中都有下砂轮（指使米沿米长度轴向旋转并磨米中间段的装置7中的砂轮）承托，所以米粒不会掉落，当落米槽4遇到磨米工位孔5-1时，米粒的米尖能够轻松越过磨米工位孔5-1，直到设定位置。
第三步：卸米：
磨米后，砂轮组件上移，装米板3向右侧移动，同时，使米沿米长度轴向旋转并磨米中间段的装置7向下移动，当落米槽4与落米工位孔5-2重合时，实现对加工后的米粒进行卸米，当下砂轮组件完成一个下降周期后，回升到原位置，为下一组的承托米粒和磨米做准备。
第四步：装米：
当落米板3继续向右侧移动至落米槽位于落米仓下方时，重复第一步进行装米。至此完成了对糙米保留完整胚且是完整米粒的留胚大米的加工。

Claims (10)

  1. 一种单粒米定位磨中间段的留胚米加工机，它包括落米装置（1）、框架（2）和装米板（3），装米板（3）水平滑动安装在框架（2）内，落米装置（1）安装在框架（2）内并位于装米板（3）的上端面上，装米板（3）板面的左半部上以阵列的形式开设有多个落米槽（4）；
    其特征在于：它还包括托板（5）、将米长度方向排齐并沿米长度方向磨米的装置（6）、使米沿米长度轴向旋转并磨米中间段的装置（7）和驱动组件（9），托板（5）板面的左半部依次设有多组工位单元，多组工位单元排成阵列，每组工位单元包括一个磨米工位孔（5-1）、和一个与落米槽（4）开孔形状相同的落米工位孔（5-2），磨米工位孔（5-1）的长度小于落米工位孔（5-2）的长度，磨米工位孔（5-1）与落米工位孔（5-2）相邻设置；
    托板（5）安装在装米板（3）的下端面上，驱动组件（9）安装在装米板（3）的一侧端面上，且驱动组件（9）带动装米板（3）水平往复运动，将米长度方向排齐并沿米长度方向磨米的装置（6）和使米沿米长度轴向旋转并磨米中间段的装置（7）均上下滑动安装在框架（2）内，且将米长度方向排齐并沿米长度方向磨米的装置（6）位于装米板（3）的上方，使米沿米长度轴向旋转并磨米中间段的装置（7）安装在托板（5）的下方，将米长度方向排齐并沿米长度方向磨米的装置（6）和使米沿米长度轴向旋转并磨米中间段的装置（7）的转轴互相垂直设置，当装米板（3）水平运动到左侧极限位置时，落米槽（4）与磨米工位孔（5-1）重合，将米长度方向排齐并沿米长度方向磨米的装置（6）中的每个砂轮对一粒糙米磨削，使米沿米长度轴向旋转并磨米中间段的装置（7）中的每个砂轮在落米槽（4）中对一粒糙米承托的同时磨削，当装米板（3）开始向右侧运动时，落米槽（4）与落米工位孔（5-2）重合，米粒穿过落米槽（4）和落米工位孔（5-2）下落，装米板（3）继续向右侧运动时，落米槽（4）与落米工位段（5-3）重合，落米槽（4）移动到落米装置（1）下方时通过落米装置（1）在落米槽（4）内装米。
  2. 根据权利要求1所述的单粒米定位磨中间段的留胚米加工机，其特征在于：落米装置（1）包括落米仓（1-1）、落米拨轮（1-2）和落米刷（1-3），落米拨轮（1-2）转动安装在落米仓（1-1）内，落米刷（1-3）安装在落米仓（1-1）左右两侧的下部，且落米刷（1-3）与装米板（3）相接触；落米拨轮（1-2）包括转轴和多个拨叶，转轴转动安装在落米仓（1-1）内，多个拨叶以环形阵列的方式安装在转轴上。
     
  3. 根据权利要求1或2所述的单粒米定位磨中间段的留胚米加工机，其特征在于：落米槽（4）为矩形通槽或椭圆形通槽，落米槽（4）的长度方向垂直于装米板（3）的长度方向。
     
  4. 根据权利要求3所述的单粒米定位磨中间段的留胚米加工机，其特征在于：将米长度方向排齐并沿米长度方向磨米的装置（6）和使米沿米长度轴向旋转并磨米中间段的装置（7）的结构相同，其中，将米长度方向排齐并沿米长度方向磨米的装置（6）包括架体（6-1）、升降驱动组件（6-2）、多个升降滑轨（6-3）、多根砂轮转轴（6-4）、多个砂轮（6-5）、砂轮驱动电机（6-6）和砂轮传动组件，多个升降滑轨（6-3）和升降驱动组件（6-2）竖直安装在框架（2）内，架体（6-1）滑动安装在多个升降滑轨（6-3）上，多根砂轮转轴（6-4）平行转动安装在架体（6-1）内，每根砂轮转轴（6-4）上安装有多个砂轮（6-5），砂轮驱动电机（6-6）安装在架体（6-1）上，砂轮传动组件安装在架体（6-1）内，且砂轮驱动电机（6-6）的输出轴与砂轮传动组件连接，砂轮传动组件带动多根砂轮转轴（6-4）转动。
     
  5. 根据权利要求4所述的单粒米定位磨中间段的留胚米加工机，其特征在于：升降驱动组件（6-2）包括壳体（6-2-1）、升降驱动电机（6-2-2）和凸轮（6-2-3），壳体（6-2-1）安装在框架（2）内，升降驱动电机（6-2-2）安装在壳体（6-2-1）内，且升降驱动电机（6-2-2）的输出轴伸出壳体（6-2-1），凸轮（6-2-3）安装在升降驱动电机（6-2-2）的输出轴上，凸轮（6-2-3）的外轮廓与架体（6-1）连接。
  6. 根据权利要求5所述的单粒米定位磨中间段的留胚米加工机，其特征在于：驱动组件（9）包括米板驱动电机（9-1）、摆轮（9-2）、摆杆（9-3）和连接块（9-4），米板驱动电机（9-1）竖直安装在框架（2）内，米板驱动电机（9-1）的输出轴与摆轮（9-2）连接，摆杆（9-3）的一端与摆轮（9-2）连接，摆杆（9-3）的另一端与安装在装米板（3）侧端面上的连接块（9-4）连接。
  7. 根据权利要求6所述的单粒米定位磨中间段的留胚米加工机，其特征在于：将米长度方向排齐并沿米长度方向磨米的装置（6）先于使米沿米长度轴向旋转并磨米中间段的装置（7）启动，二者的砂轮驱动电机（6-6）的启动时差为0.5-2s。
  8. 根据权利要求1或7所述的单粒米定位磨中间段的留胚米加工机，其特征在于：它还包括接米槽（11），接米槽（11）可抽拉安装在框架（2）内，且接米槽（11）位于使米沿米长度轴向旋转并磨米中间段的装置（7）的正下方。
  9. 一种胚完整的留胚大米，其特征在于：留胚大米沿其米粒长度方向由米左尖段（12）、中间段（13）和米右尖段（14）组成，中间段（13）包含胚乳（A1）成份，米左尖段（12）和米右尖段（14）中必有一个尖段是包含全部胚（A7）和胚乳（A1）成份以及糊粉层（A6）成份的，而另一个尖段是包含胚乳（A1）成份及糊粉层（A6）成份的。
  10. 根据权利要求9所述的胚完整的留胚大米，其特征在于：中间段（13）的外表面还包含有小于8微米厚的糊粉层。
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