JPS637849A - Vertical rice refining apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a vertical rice milling device.

(Prior art) Rice mills can be roughly divided into horizontal axis rice mills and vertical axis rice mills, depending on the flow of rice grains during rice milling, and currently the horizontal axis rice mill is more popular. When using multiple horizontal shaft rice mills in parallel, it is necessary to install a grain lifting machine as a communication means to connect the supply and discharge ports of each rice mill installed side by side, which reduces equipment costs and
This increased configuration costs. With the intention of eliminating the need for a grain lifting machine, attempts have been made to install two machines in the same machine, with the supply port directly connected to the discharge port, but from the viewpoint of operability, the number of machines that can be installed in parallel is limited to two. However, this did not lead to a significant reduction in component costs. In addition, in the case of a general vertical shaft rice mill, in which the flow of rice grains during rice milling is from the top to the bottom using gravity, when using multiple rice mills in series, the 4lA I needed a grain machine.

On the other hand, in a vertical shaft rice mill, in which the flow of rice grains during milling is from the bottom to the top, by frying the grains together with the milling, the supply port can be lowered and the discharge port higher. When a plurality of such machines are used in tandem, it is known that they can be directly communicated with each other, eliminating the need for a communication means such as a grain frying machine, as disclosed in Japanese Patent Publication No. 54-3098, for example.

(Problems to be Solved by the Invention) The device known from the above-mentioned Japanese Patent Publication No. 54-3098 is a system in which unpolished rice is supplied to a rusted rice machine via a flowing-down type hopper, and multiple machines are used in series. In this case, in order to ensure the flow of rice grains between each discharge port and each supply port, it is necessary to install each rice milling machine in parallel at a predetermined interval, and the installation distance is restricted.

In addition, since rice grains are fed by gravity, if the discharge of rice grains outside the machine is suppressed by adjusting the polishing level, the rice lifting action of the spiral rotor will be reduced, making it impossible to continue the rice milling process smoothly. Ta.

The present invention is intended to solve the above-mentioned problems.When using a plurality of vertical shaft rice mills in which the flow of rice grains during rice milling is from the bottom to the top Developed a rice milling device that enables stable rice milling work by lowering the supply hopper and increasing the degree of freedom in installation distance and location compared to the one known in Publication No. 54-3098. The purpose is to provide

<<Means for Solving the Problems>> In order to solve the above problems, the present invention has a structure in which a spiral trochanter and a refined trochanter are mounted on a vertical shaft rotatably provided inside a perforated bran removing cylinder. A space is formed in between as a milling chamber, and a space between the spiral trochanter disposed at the lower part of the milling trochanter and the cylindrical body section at the bottom of the porous-walled bran removal tube is defined as a brown rice supply chamber. A brown rice discharging section of a brown rice feeding device, which has a spiral body rotatably disposed inside a cylinder having a mouth, is connected to the cylinder so as to communicate with the brown rice supply chamber.

(Function) A so-called screw conveyor brown rice feeding device, in which a spiral body is rotatably installed inside a cylinder, is connected to a vertical shaft rice milling device in which the flow of rice grains during rice milling is from the bottom to the top to force brown rice. When multiple rice milling devices are connected together, the discharge port of each rice milling device is located at a high position, and each rice supply port that should be connected is located at a low position. This allows the installation distance and location of each rice polishing device to be configured more freely.

(Example) Embodiments of the present invention will be described based on the drawings.

In FIG. 1, reference numeral 1 indicates the entire vertical rice milling device,
A space between the porous-walled bran removal tube 2 and the whitening trochanter 5 is formed in the whitening chamber 6, and the spiral trochanter 4 and the lower part of the porous-walled rice bran removing tube n2 arranged at the lower part of the whitening trochanter 5 are formed in the whitening chamber 6. The space between the cylindrical body part 7 and the brown rice supply chamber 8 is defined as a brown rice supply chamber 8. Then, the rice feeding port 10 with the feeding hopper 9 placed thereon. A spiral body 12 is inside a cylinder 11 having a
The brown rice discharge part 1 of the brown rice supply device 13 is rotatably installed on the shaft.
4 is connected to the cylindrical body part 7 by communicating with the supply port 8. The vertical shaft 3 is formed in a hollow shape, and the hollow shaft hole 15 is sealed with the spiral rotor 4 and is opened to the outside from the air intake shaft hole 17 at the shaft end of the upper bearing 16. A plurality of blowholes 18 are provided in the whitening trochanter 5 portion of the shaft 3 and communicate with the blowhole grooves 19 of the whitening trochanter 5. Reference numeral 20 denotes a cylindrical frame surrounding the porous-walled bran removal cylinder 2, which has a milled rice discharge port 21 at the upper end of the porous-walled bran removal cylinder 2 and a polishing level adjustment device 2 having a resistance lid 22.
A discharge hole 23 having a diameter of 2A passes through the cylindrical frame 20 and connects the discharge port 21 with the outside. 24 is a cylindrical frame body 2
This is a connection part that connects an exhaust fan (not shown) via a connection pipe 25 provided at 0. A main electric motor 26 rotates the vertical shaft 3, and a belt 29 is wound around a booley 28 inserted into the shaft end of the vertical shaft 3. Further, 30 is an electric motor that drives the brown rice feeding device 13, and a pulley 31 is mounted on the spiral body 12.
A belt 33 is suspended between the motor 30 and a booley 32 which is shaft-inserted into the electric motor 30. Reference numeral 34 denotes a machine base that accommodates a booley belt, and on one side thereof is a residual rice discharge port 1 connected to a residual rice discharge port 36 having a shutter 35 provided at the bottom of the brown rice supply chamber 8.
37 is open. Further, as shown in FIG. 2, the brown rice discharge section 14 of the brown rice supply device 13 is connected to a side portion of the brown rice supply chamber 8 that is offset from the center.

The one shown in Figure 3 has multiple vertical rice milling machines (3 units).
A series of rice milling processes are constructed by connecting the discharge port of the first stage rice milling device 1a and the supply port of the second stage rice milling device 1b through a connecting pipe 38, and the second stage, The third-stage rice polishing devices 1b and 1c are similarly connected through a connecting pipe 39. In this configuration, the installation distance of each rice polishing device is narrowed so that they are equally spaced, whereas in the one shown in Fig. 4,
This shows a case in which the arrangement distance between the first-stage rice polishing device 1a and the second-stage rice polishing device 1b is widened, and the distance between them is varied.

What is shown in FIG. 5 shows a case where a moisture addition device 41 is installed in the brown rice flow path 40 between the rice feed port 10 of the brown rice supply device 13 and the brown rice discharge section 14. A screw shaft 43 that can be moved in and out by the rotation of a forward-reverse rotating electric motor 42 is configured to adjust the degree of opening and closing of a flow rate control valve 44 provided at the bottom of the supply hopper 9, and also adjusts the water stored in a water tank 45. In addition, a moisture adding device 41 is provided in the brown rice flow path 40 in the cylinder 11 to adjust the flow rate of the water stored in the water tank 45 and spray the water from a nozzle 46 in the form of mist.

The operation of the above embodiment will be explained below.

The main motor 26 that drives the vertical shaft 3 and the electric motor 1130 that drives the brown rice supply device 13 are started, and the supply hopper
The brown rice supplied to 9 is fed from the rice feeding port 10 of the brown rice feeding device 13 through the inside of the cylinder 11 toward the brown rice discharge part 14. Then, the brown rice is supplied from the brown rice discharge part 14 to the brown rice supply chamber 8, and is pumped toward the upper part of the whitening chamber 6 while filling the whitening chamber 6 with the spiral rotor 4. The rice grains that have reached the milled rice discharge port 21 from inside the milling chamber 6 are prevented from flowing out to the discharge gutter 23 by the resistance lid 22 of the polishing level adjustment device TL22A, and the lifting action of the spiral trochanter 4 and the suppression adjustment of the resistance lid 22 are controlled. Whitening room 6
The density of the rice grains in the rice grains is increased, and the rice grains are rubbed against each other by the stirring action of the polishing trochanter 5 to peel off the skin of the rice grains, and the rice grains are polished to a predetermined degree of polishing and flowed out from the discharge gutter 23.

In addition, the brown rice supplied from the brown rice discharge section 14 of the brown rice supply device @13 to the brown rice supply chamber 8 flows into the side portion of the supply chamber 8 which is shifted from the center of the supply chamber 8, and the brown rice is sent to the milling chamber 6 more smoothly. payment is possible. By controlling the rotation speed of the electric motor 30, it is also possible to adjust the amount of brown rice fed.

In addition, above the substantially middle part of the porous-walled rice bran removal cylinder 2, the rice bran powder peeled off from the surface of the polished rice grains or the rice bran adhering to the surface of the rice grains flows into the shaft hole 17 due to the suction action of the exhaust fan. The hollow shaft hole 15 of the shaft 3, the blow hole 18, and the blow groove 19 pass through the porous-walled rice bran removal cylinder 2 from inside the milling chamber 6, and then the cylindrical part surrounding the porous-walled rice bran removal cylinder 2 is formed. Frame body 20
The bran flows from the connecting portion 24 through the connecting pipe 23 into the exhaust machine, and is collected by a bran collecting device such as a cyclone. At the end of the milling process, the rice grains in the milling chamber 6 are removed by ventilation so that the bran generated by the milling action can be sufficiently removed.Furthermore, since the air is ventilated upward from the blast groove 19, the rice grains in the milling chamber 6 are lifted. can be promoted.

This rice milling device has a brown rice supply device 13, and the rice feeding port 10 is located at a lower position than before, and when multiple rice milling devices are installed in series, there is no need for a grain lifting machine to connect each rice milling machine.
It is easy to arrange them close together as shown in FIG. 3, or to separate them as shown in FIG. 4 depending on the rice grain processing process before and after and the conditions of the workplace.

In addition, when the moisture addition device 41 is provided in the brown rice flow path 40 between the rice feed port 10 and the brown rice discharge section 14 of the brown rice supply device 13, the flow adjustment valve 44 is controlled by the rotation of the forward/reverse rotary electric motor 42.
The flow rate of brown rice is adjusted by adjusting the opening/closing degree of the brown rice, and a predetermined amount of water is adjusted by the water addition device 41 according to the flow rate of brown rice, and is sprayed from the nozzle 46 onto the flowing brown rice in the form of mist. The surface of the rice and grains is moistened by stirring by the feeding action, and then sent to the polishing chamber 6 for polishing, which not only makes rice polishing easier, but also wipes away adhering bran etc. on the surface of the rice grains, making the surface of the rice grains smooth. This makes it possible to easily process so-called super-shiny rice.

Figures 6 and 7 show that this vertical rice milling device monitors the whiteness of the polished rice flowing out from the rice milling device and adjusts it using a whiteness adjustment mechanism such as a resistor lid to achieve the whiteness required for the product. This shows the case when

The whiteness adjustment mechanism 47 is installed in relation to the discharge port 21, and a fulcrum rod 48 protruding to one side is fixed to the upper wall surface of the discharge port 21, and the intermediate portion is pivotally supported on the fulcrum rod 48. A resistor 150 is provided at the lower end of the lever 49, and a rotary piece 51 having a rotatable screw groove is rotatably supported at the upper end of the lever 49. Adjustment screw shaft 53 on the rotation axis
is mounted on the adjusting screw shaft 5, and the pin 54 is fitted to the rotating shaft.
3, and a compression spring 56 is inserted between the base of the rotating shaft and the end of the adjusting screw shaft 53.
One side of the adjustment screw shaft 53 is screwed into the rotating piece 51, and the resistance cover 50 is formed to move toward and away from the discharge port 21 by forward and reverse rotation of the forward and reverse rotating electric motor 52.

Next, a case where the rice grain whiteness detecting section of the rice grain whiteness measuring device is installed in the flow path of the rice grains will be explained based on FIG. 7.

A transparent glass plate 60.6 is installed in the opening 58.59 provided in each of the brown rice flow channel 57 and the porous wall removal tube 2 on the discharge side.
1 is installed, a partition wall 62 for increasing the density of rice grains bent at a gentle slope is interposed inside the brown rice flow r1II57, and a partition wall for increasing the density of rice grains with a transparent glass plate 60 and a cross-sectional area on the outflow side of the rice grains is reduced. A rice grain whiteness detection unit is formed between the wall 62 and the rice grain flow path 63 that increases the rice grain density, and is installed in each of the brown rice flow 6157 and the porous wall bran removing cylinder 2 with the transparent glass plate 60, 61 as the center. In 64.65, a partition wall 68.69 is provided in an optical device box 66.67, one side is formed as a light source section 70.71 and the other side is formed as a light receiving section 72.73, and a lamp 76.77 is formed on the light source section 70.71. The light receiving element 74. is connected to the light receiving portion 72.73.
75, lamp 76.77 and light receiving element 74.75
and are arranged so as to intersect with each other with transparent glass plates 60 and 61 interposed therebetween.

The rice grain whiteness measuring device 78 has a pilot lamp 80, an Iff switch 81, a whiteness setting device 82, a brown rice whiteness indicator 83, a whiteness whiteness indicator 84, and a whiteness setting value display for white rice on the outside of the measuring instrument box 79. Each of the measuring instruments 85 is placed in the measuring instrument box 7.
9 includes an input/output control device 86 and a central information processing unit (C
PU)87. A control/device 90 formed by a storage device 88, a comparison device 89, etc., and a reference color setting section 91 are arranged. The reference color setting unit 91 attaches a reference color plate 93 coated to the same whiteness as a given white rice on the side wall of a sealed container box 92,
A lamp 94 and a light-receiving element 95 are disposed opposite to each other at a position where the reference color plate 93 intersects with the reference color plate 93 .

A light receiving element 74, 75, 95, a power switch 81 and a polished rice whiteness setting device 82 are connected to the input side of the control device 90, and lamps 76, 77, 94, a brown rice whiteness indicator 83, and a brown rice whiteness indicator 83 are connected to the output side of the control device 90. White rice whiteness display 84, whiteness setting value display 85. Forward/reverse rotation electric whiteness adjustment mechanism 47! fi52.

Next, the function of measuring the whiteness of rice grains using the rice grain whiteness measuring device and automatically controlling the whiteness of white rice by polishing brown rice by milling and placing the rice will be explained based on FIG.

When the power switch 81 of the rice grain whiteness measuring device 78 is turned on and power is supplied to the control device M9o, the transparent glass plates 60, 61, . Each of the reference color plates 93 is illuminated.

The desired whiteness of whiten rice is set from the whiteness setting device 82, for example, whiteness 40.
° is set in the storage device 88 of the control device M90, and the set value is displayed on the polished rice whiteness set value display 85. The light-receiving element 95 detects the reflected light obtained by illuminating the reference color plate 93 from the lamp 94 of the reference color setting section 91, and the light-receiving element 9
The detected value of 5 is sent to the CPLJ87 via the input/output control device 86.
The CPU 87 calculates the light amount detection value into whiteness, and the whiteness calculation value is now assumed to be 40 degrees and is stored in the storage device 8.
8 is input. The storage device 88 stores correction values for determining the whiteness of different light beams above and below, using the light amount value of the reference color plate 93 as a reference.

An arbitrary amount of brown rice flowing down into the brown rice flow gutter 57 flows into the rice grain flow path 63, increases the density of rice grains toward the outflow part of the rice grain flow path 63, and the flowing brown rice is exposed to the transparent glass plate from the lamp 76 of the light source section 70. 60, and the reflected light obtained from the brown rice is detected by the light receiving element 75 of the light receiving section 72, and the detected value is sent to the CPU 87 of the TM control device 90. The information is communicated with the storage device 88 and the comparison device 89 and compared and calculated with the reflected light amount value of the reference color plate 93, and the brown rice whiteness is displayed on the brown rice whiteness display 83. In addition, the flowing polished rice in the porous-walled rice bran removing cylinder 2 on the discharge side is irradiated with light from the lamp 77 of the light source section 71 through the transparent glass plate 61, and the amount of reflected light obtained from the polished rice is reflected by the light receiving section 73.
The detected value is detected by the light receiving element 75 of the control device 9/0, the storage device 88, and the comparison device 89.
are compared and calculated with the reflected light m value of the reference color plate 93, and the polished rice whiteness is displayed on the polished rice whiteness display 84.

The whiteness of the white rice flowing through the porous-walled rice bran removal cylinder 2 of the rice grain whiteness detection unit 65 is detected and displayed on the whiteness display 84 of the white rice, and the whiteness of the white rice is displayed on the whiteness setting value display 85 of the white rice. When the whiteness value is different from the whiteness value, the control device 90 sends an output signal to the forward/reverse rotary electric motor 52 of the whiteness adjustment mechanism 47, and the whiteness adjustment mechanism 4
7 to automatically control the whiteness detection value of the rice grain whiteness detection unit 65 to be the same as the whiteness setting value.

By the way, the average whiteness of white rice is about 40 degrees, and there is a correlation that the average white rice yield in this case is 90%, so if the purpose is to perform operation management based on the white rice yield, It is sufficient to set the whiteness setting value of polished rice to 40° in the control device 90. However, there is a phenomenon in which the whiteness of white rice is inevitably determined by the whiteness of brown rice. That is,
If the whiteness of brown rice is 20°, does it smell like white rice of 40°? The white rice yield is about 90%, and if the whiteness of brown rice is 18°, the whiteness of white rice is 38° and the yield of white rice is about 90%. If the value is 40°, the white rice yield will be around 89%, and if the whiteness of brown rice is 22°, the control whiteness value of white rice will be 40%.
If it is set to °, the yield of polished rice will be about 91%. Therefore, if you select brown rice with a high whiteness value and mill it,
A high yield of white rice can be obtained if the whiteness of the white rice is maintained at the same level. ■ However, it is difficult to obtain only brown rice with a high whiteness value, and the management of whiteness of white rice is subject to various changes depending on the quality of the product and each production target. Therefore, there are two ways to manage the whiteness of white rice using rice milling equipment. First of all,
It is unrelated to the whiteness of brown rice, and when white rice of the same whiteness is required, there is no need to operate the rice grain whiteness detection unit 64 that detects the whiteness of brown rice, and the whiteness setting value of whitened rice is input to the $ control device 90. If set, the whiteness adjustment mechanism 47 is adjusted by the output signal of the control device 90 based on the whiteness of the polished rice flowing out from the discharge port 21 of the rice milling device 2 detected by the rice grain whiteness detection unit 65.
The forward and reverse rotating electric motor 1ff52 is appropriately controlled to continue milling rice at the same whiteness value.

On the other hand, if the operation management of the rice milling equipment is mainly focused on yield, the brown rice whiteness value will be increased by +20 or +18.
The whiteness setting value of white rice is set in the control device 76, such as +21. In other words, if the white rice white a setting value is set to +20, if the whiteness of brown rice is 20°, the whiteness of white rice will be 40°, and if the whiteness of brown rice is 18°, the whiteness of white rice will be 38°.
A detection signal from a rice grain whiteness detection unit 64 that detects brown rice whiteness;
The whiteness adjustment mechanism 47 is automatically controlled based on the whiteness of white rice detected by the rice grain whiteness detection section 65, i%Q, and the signal communicated to the control device 90.

In addition, when rice milling equipment is configured with multiple units as shown in Figures 3 and 4, the water addition rate or polishing rate is set for each rice milling unit and controlled to ensure good rice polishing. It is something to do.

(Effects of the Invention) As explained above, according to the present invention, it is no longer necessary to use a grain lifting machine, which was conventionally required to communicate with other rice grain processing machines or to install multiple rice milling machines in series. In addition, compared to the vertical shaft rice mill, which was developed to eliminate the need for a grain lifting machine and has a flow of rice grains from below to above, it is possible to supply brown rice from a lower position. The connection with the previous process is a benefit, and the brown rice feeding device can supply brown rice even over a somewhat long distance, which further increases the degree of freedom in arranging the rice milling device, etc.

Since the brown rice is stably fed to the brown rice supply room by the brown rice feeding device, there are no fluctuations in the supply of brown rice or changes in fluidity due to the polishing process, and the efficient whitening process allows stable mass production of high quality polished rice. be able to.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway side view of the vertical rice polishing device, Figure 2 is its plan view, Figure 3 is a side view of a configuration of multiple vertical rice polishing devices connected together, and Figure 4 is its arrangement. Figure 5 is an enlarged partial cross-sectional view of the brown rice supply device of the vertical rice milling device equipped with a moisture addition device, and Figure 6 is the detection unit of the rice grain whiteness measuring device at the polished rice discharge port. FIG. 7 is an enlarged partial cross-sectional view of a vertical rice milling device equipped with the following, and FIG. 7 is a block diagram of the control device of the rice grain whiteness measuring device. 1... Vertical rice polishing device 2... Porous wall bran removal tube 3.
... Vertical shaft 4 ... Spiral trochanter 5 ... Refining trochanter 6 ... Refining chamber 7 -- Cylindrical body part
8... Brown rice supply chamber 9... Supply hopper 10
... Rice supply port 11 ... Cylindrical body 12 ... Spiral body 13 ... Brown rice supply device 14 ... Brown rice discharge part 15 ... Hollow shaft hole 16 ... Bearing 17 ...
Air intake shaft hole 18... Blower hole 19... Blower groove
20... Cylindrical frame body 21... Discharge port
22...Resistance lid 22A...Fineness adjustment device 2
3...Discharge gutter 24...Connection part 25...
Connecting pipe 26...Main motor 27...Pulley 28...Booley 29...Belt 30...
・Electric motor 31...Pulley 32...Booley 33...Belt 34...Machine base
35...Shutter 36...Residual rice discharge port
37...Residual rice discharge gutter 38...Connection pipe ゜3
9...Connection pipe 4o...Brown rice flow path 41...
Moisture addition device 42... Forward/reverse rotating motor 43... Spiral shaft 44... Fluid control valve 45... Water tank 46...
・Nozzle 47... Whiteness adjustment mechanism 48...
Fulcrum rod 49...Lever 50...Resistance M
51...Rotating piece 52...Forward/reverse rotating motor 53...Adjustment screw shaft 54...Bin 5
5...Long slot 56...Compression spring 57...
Brown rice flow gutter 58...opening 59...opening 60...transparent glass 61...transparent glass 62
...Partition wall for increasing rice grain density 63...Rice grain flow path 64
... Rice grain whiteness detection section 65 ... Rice grain whiteness detection section 66
...Optical instrument box 67...Optical instrument box 68...
Partition wall 69...Partition wall 70...Optical section
71...Optical section 72...Light receiving section
73... Light receiving section 74... Light receiving element 75...
・Light receiving element 76... Lamp 77... Lamp 78... Rice grain whiteness measuring device 79... Measuring instrument box 8
0... Pilot lamp 81... Power switch 8
2...White rice whiteness setting device 83...Brown rice whiteness indicator 8
4...White rice whiteness indicator

Claims (4)

[Claims] (1) A spiral trochanter and a refined trochanter are inserted into a vertical shaft rotatably provided inside an upright porous-walled bran removal cylinder, and a spiral trochanter and a refined trochanter are inserted between the perforated-walled bran removal cylinder and the refined trochanter. A space is formed as a milling chamber, and a space between the spiral trochanter disposed at the lower part of the milling trochanter and the cylindrical body part at the lower part of the porous wall bran removal cylinder is defined as a brown rice supply chamber, and a rice feeding opening is formed. 1. A vertical shaft rice milling device, characterized in that a brown rice discharging section of a brown rice supplying device, which has a spiral body rotatably installed inside a cylinder body, is connected to the cylinder body portion by communicating with the brown rice supply chamber. (2) The vertical rice milling device according to claim (1), wherein the brown rice discharge portion is tangentially connected to a side portion of the brown rice supply chamber that is offset from the center of the brown rice supply chamber. (3) The vertical shaft rice milling device according to claim 1, wherein a water addition device is installed in the brown rice flow path between the rice supply opening and the brown rice discharge portion of the brown rice supply device. . (4) A patent claim in which a connecting portion for connecting an exhaust fan to a cylindrical frame surrounding the porous wall bran removing cylinder via a connecting pipe is provided above a substantially middle portion of the porous wall bran removing cylinder. Range number (1)
Vertical rice milling device as described in section.