JP3443860B2 - Grain preparation equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain preparation apparatus. 2. Description of the Related Art Since small rice is mixed in brown rice after dehulling treatment, a grain size sorting device is connected to remove the small rice. By the way, if the ratio of small rice is equal to or more than a predetermined value, the grade is lowered. Therefore, the degree of contamination is a problem. In recent years, a form in which the ratio of small rice can be calculated and displayed is known. [0003] However, even if the quality of a sample brown rice obtained by passing through a particle size sorting device once does not reach a certain ratio or less, it is necessary to monitor the quality inspection result at all times because it is separately processed. is there. [0004] The present invention has been made to solve the above-mentioned drawbacks, and has taken the following technical measures. That is,
In a grain preparation device provided with a particle size sorting device B that separates and sorts brown rice after dehulling treatment into regular brown rice and small rice, a switching mechanism that is switched to a circulation side and a discharge side is connected to a discharge section of the regular brown rice, On the other hand, a part of this polished rice is sampled and supplied to the grader 18, and the grader 18 calculates at least the ratio of small rice in the polished rice ,
When calculating the Kogome amount of more than the predetermined ratio switching the switching mechanism to the circulation side, the structure of the grain preparation device formed by providing a control means for switching the said switching mechanism to the discharge side when calculating the Kogome amount of a predetermined percentage below And [0005] The brown rice removed by the removing means is supplied to a granule sorting device B, separated into regular brown rice and small rice, and brown rice sampled from a passage to be taken out as regular brown rice. Then, the small rice ratio in the conditioned brown rice is calculated by the grade meter 18. As a result, if the percentage of small rice contained in the brown rice is equal to or higher than the predetermined ratio, the switching mechanism is switched to the circulation side, and after the predetermined sorting work, the regular brown rice is supplied from the circulation side to the particle size sorting mechanism B. The particle size sorting can be performed again. Thus, residual Kogome supplies brown rice again quality meter 18 decreased to calculate the Kogome ratio, which is the switching mechanism becomes constant less is switched to the discharge side, it is to complete the particle size selection. As described above, based on the quality measurement result after the particle size selection, the material is transferred to the circulation side so as to be used again for the particle size selection, or is discharged to the discharge side when a predetermined quality is secured. Constant quality can be secured over the entire volume. An embodiment of the present invention will be described with reference to the drawings. The grain preparation device includes a de-sorting device A and a particle size sorting device B. Among them, the de-sorting device A has the following configuration.
An escape unit 2 containing a pair of escape rolls 1 and 1 is viewed below the supply hopper 3, and below the supply hopper 3, an air selection device 5 configured to adjust the wind force of the dust discharge fan 4 is configured. The wind selection device 5 is configured to be able to separate rice husks and light dust mixed in the rice spilled from the rolls 1 and 1 by wind force. A paddy / brown rice sorter 6 in the form of a rocking sorter is provided near these rolls 1, 1 and the wind sorter 5,
Receiving the slid rice, the rice is separated into brown rice and brown rice, and brown rice is obtained while reducing the rice to the dehulling unit 2. The entrance hopper 9 of the particle size sorting device B is viewed below the frying machine 7 for frying brown rice from the paddy / brown rice sorting device 6. The particle size sorting device B is provided with a sorting cylinder 11 of a suitable size on the outer periphery of a spiral body 10 rotating around a vertical axis so as to rotate integrally with the spiral body 10. In the process of transporting the rice upward, small rice leaks from the sorting cylinder 11 and can be separated from the conditioned rice. The upper side of the spiral body 10 communicates with the discharge hopper 12, and from the hopper 12 through the guide chute 13 to the graining machine 14. A two-way switching valve 15 is interposed at the grain discharge part of the above-mentioned grain raising machine 14, one of which communicates with a circulation tank 16 and the other with a discharge tank 17. A grader 18 is provided in the middle of the guide chute 13 so as to sample and take in a part of the flowing brown rice to measure the grade. That is, the sample particles are transported on the carrier disk 19 with each particle flow, and the amount of transmitted light is measured by a pair of upper and lower light emitting / receiving sensors 20, and the height and time of the detected voltage waveform are analyzed. Compared with the preset waveform,
It is to estimate which kind of paddy it is. The calculation unit analyzes the output waveform for a certain number of grains, and calculates the adjusted rice ratio, the small rice ratio, and the paddy ratio, respectively. The control unit 21 of the quality meter 18 is connected to the control unit 22 of the particle size sorting device B. That is, the control unit 22
Is a signal from the measuring unit 23 provided in the discharge tank 17 and the quality meter 1
8 or the two-way switching valve 15
For example, when the quality meter signal indicates that the small rice ratio is equal to or higher than a predetermined value, the switching valve 15 is provided to the circulation tank 16 so that the small rice ratio is equal to or lower than the predetermined ratio. In the case of, switching is performed to discharge to the discharge tank 17. The above-mentioned predetermined ratio is a ratio falling within an allowable range determined for each class. For example, in the case of 1 or the like, the ratio varies depending on the relationship with other colored particles, but is about 7% or less. Below the circulation tank 16, a shutter 24,
A circulation chute 25 is provided, and a shutter 24 is opened by an appropriate signal from the control unit 22 to communicate with the entrance hopper 9 of the particle size sorting device B via the circulation chute 25. De-sorting device A
Control unit 26 has a roll 1 and a gap opening / closing control signal,
It is configured to control the wind control signal of the wind selection device, the swing number control of the paddy / brown rice sorting device 6, the brown rice partitioning position control, the supply amount control, and the like. The configuration can be controlled to change from high to low to large or small. For example, when the paddy ratio is equal to or higher than a predetermined ratio, control output is performed so as to narrow the gap between the milling rolls 1 and 1. On the contrary, when the small rice ratio is abnormally high, the milling rolls 1 and 1 are output.
Enlarge the gap. When the ratio of the paddy is high, the sorting condition of the paddy / brown rice sorting device 6 is controlled and output so as to increase the number of swings or reduce the supply amount. Numerals 27, 27 are storage tanks for storing paddy to be processed in the supply hopper 3 in the upper part of the stripping unit 2, and there are a plurality of storage tanks which can correspond to different varieties. The operation of the above example will be described. The dried paddy is stored in the storage tanks 25, 25. Among these, paddy of an arbitrary variety is prepared and processed, but the paddy is removed in the removal unit 2 and the rice husk is separated and removed by the air separation device 5 thereunder. The mixed rice of paddy and brown rice reaches paddy / brown rice sorting device 6,
The brown rice enters the particle size sorting apparatus B via the graining machine 7 and is separated into small rice and the like that pass through the sorting cylinder 11 and regular rice and the like that do not pass. Among them, conditioned rice is hopper 12, guide chute 13
The small rice or the like that has reached the fryer 14 through the sorting machine and leaked through the sorting cylinder 11 is appropriately collected outside the machine. A part of the polished rice passing through the guide chute 13 is sampled at predetermined time intervals to determine whether it is polished rice, small rice, or paddy for each grain, and the ratio thereof is calculated. Here, those detection results are stored in the control unit 21.
Is output from the control unit 22 to the control unit 22. When the small rice ratio is higher than a preset ratio, the control unit switches the two-way switching valve 15 so that the brown rice is supplied to the circulation tank 16. Thus, the conditioned brown rice is temporarily stored in the circulation tank 16. When the de-sorting operation is completed, the shutter 24 below the circulation tank 16 is opened, and the polished rice is again subjected to particle size sorting through the circulation chute 25 to remove small rice. The grain-sorted brown rice that has been subjected to the particle size sorting process in this way is partially sampled from the guide chute 13 to the grade meter 18 and the small rice ratio is similarly calculated. As a result, when the small rice ratio falls within the predetermined range, the two-way switching valve 1
5 is switched to the discharge side and discharged to the discharge tank 17. If the small rice ratio still does not reach the predetermined range even after the second particle size sorting process, it is determined whether the third, fourth,... Circulation tank 1 when the possibility of
The shift to the side 6 is stopped and the discharge is performed to the discharge tank 17 side. As described above, the brown rice from which small rice has been removed by the particle size sorting device B is partially sampled to detect the quality, particularly the small rice ratio, and determine whether or not the discharge is appropriate. Particle size sorter B from circulation tank 16 again
To perform the sorting process, so that high-quality brown rice can be obtained. In the above embodiment, the quality of the sample grains from the brown rice guiding chute 13 of the grain size sorting apparatus B is detected, and when the small rice ratio is high, the whole quantity is supplied to the circulation tank 16. The two-way switching valve 15 may be switched by measuring the quality every time and determining whether to circulate or discharge each measurement block. In this case, the brown rice stored in the circulation tank 16 is to be collectively re-sorted later. The result of the quality judgment by the quality meter 18 is fed back to the control unit of the de-sorting device A, and when the ratio of the paddy is equal to or more than a predetermined value, interlocking control is performed to reduce the gap between the de-rolls 1, 1. It is preferable to perform interlocking control so as to perform selection conditions of the paddy / brown rice selection device 6, for example, a change in the number of swings, a change in the supply amount, and the like. Also, when the quality of the quality meter 18 is good, it is preferable to increase the amount of supply to the escape unit 2 to improve the efficiency. Conversely, when the quality is low, the quality is controlled to be reduced. . When the quality is low, that is, when the ratio of the paddy is equal to or higher than a predetermined value, the order of handling is as follows.
After the change in the number of swings and the movement of the partition plate, the supply amount to the escape unit 2 is reduced if the difference still does not fall within the predetermined range.
In the present embodiment, the particle size sorting apparatus B is configured such that the sorting cylinder rotates around the vertical axis, but may be configured so as to rotate around the horizontal axis.

[Brief description of the drawings] FIG. 1 is an overall schematic front view. FIG. 2 is an enlarged side view of a part thereof. FIG. 3 is a block circuit diagram. [Explanation of symbols] A Desizing and sorting device B Particle size sorting device 1,1 release roll 2 release section 3 Supply hopper 4 Dust exhaust fan 5 Wind sorting device 6 Paddy / brown rice sorting device 7 Frying machine 9 Entrance hopper 10 spiral body 11 sorting cylinder 12 Discharge hopper 13 Guide chute 14 Frying machine 15 2-way switching valve 16 Circulation tank 17 Drain tank 18 Quality meter 19 Conveying disk 20 light emitting / receiving sensor 21 control unit 22 control unit 23 weighing unit 24 shutter 25 circulation chute 26 control unit 27, 27 ... storage tank

Claims (1)

(57) [Claims] [Claim 1] In a grain preparation device provided with a particle size sorting device B for separating and sorting brown rice after dewaxing treatment into regular brown rice and small rice, circulation is performed in a discharge section of the regular brown rice. It is switched to the side and discharge side
A switching mechanism is connected, while the polished rice is partially sampled and supplied to the quality meter 18, and the grading meter 18 calculates at least the percentage of small rice in the polished rice , and when calculating the small rice amount switching the switching mechanism to the circulation side, grain preparation device formed by providing a control means for switching the said switching mechanism to the discharge side when calculating the Kogome amount of a predetermined percentage below.