JP2001259449A - Grain milling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make grain milling state of succeeding grains adequate while improving grain milling accuracy of preceding grains with a grain milling device for executing perfect rice milling from the preceding rice to the final rice. SOLUTION: The grain milling device which mills the grains by supplying the grains to be supplied to a grain milling machine in precedence in starting the grain milling, closing the discharge port of a grain milling section, subjecting the grains to a prescribed grain milling treatment and discharging the preceding grains, then mills the grains while supplying the succeeding grains in succession thereto is provided with a grain milling load detecting means for detecting the grain milling load in the grain milling of the preceding grains and is provided with a control means for setting the grain milling load of the succeeding grains in accordance with the load information in the grain milling of the preceding grains.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a grain mill.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Patent Publication No. Hei 6-57322, a configuration for completely polishing rice from preceding rice to final rice is known.

[0003]

However, in the conventional rice milling apparatus, the brown rice charging path is cut off or the driving of the charging means is decelerated in accordance with the rice milling load while brown rice is charged while the rice mill outlet is closed. However, since the rice was stopped and the preceding rice was caught and the preceding rice was milled, there was a case where the stability of the grain volume of the preceding rice was lacking and the milling was incomplete or the milling was excessive.

[0004]

The present invention employs the following technical means in order to solve the above problems. That is, according to the first aspect of the present invention, the grains to be supplied to the grain-milling machine are supplied in advance at the time of starting the grain-milling, the outlet of the grain-milling part is closed, the grain is processed in a predetermined manner, and the preceding grains are discharged. In the grain refiner, which subsequently refines the grain while supplying the subsequent grain, a grain load detecting means for detecting the grain load at the time of the preceding grain is provided, and the subsequent grain is determined based on the load information at the time of the preceding grain. Of the milling apparatus provided with a control means for setting the milling load.

According to a second aspect of the present invention, the grains to be supplied to the grain-milling machine are supplied at the beginning of the grain-milling, the outlet of the grain-milling section is closed, and the grain is processed in a predetermined manner. In a grain refiner for grain refinement while continuously supplying subsequent grains after discharging grains, a grain load detection means for detecting a grain load at the time of preceding grain milling is provided, and based on load information at the time of preceding grain milling. In this case, a grain refinement apparatus is provided which includes a determination means for determining the end of the grain refinement of the preceding grain.

[0006]

According to the first aspect of the present invention, there is provided a grain load detecting means for detecting the grain load at the time of the preceding grain milling, and the subsequent grain is detected based on the load information at the time of the preceding grain milling. Since the control means for setting the milling load is provided, the load of the subsequent grain is set based on the milling information of the preceding grain that accurately captures the load condition to be set, thereby significantly improving the accuracy of the milling of the input grain. Can be improved.

Further, the invention according to claim 2 is provided with a grain load detecting means for detecting the grain load at the time of the preceding grain milling, and based on the load information at the time of the preceding grain milling, the grain of the preceding grain is refined. By providing the determination means to determine the end of the grain, because it can be set in relation to the preceding grain set value and the actual value, for example, compared with the conventional configuration to determine the remaining amount by change in the milling load, It is possible to eliminate instability of the final determination due to variations in the properties of the grains and the like. If a configuration for accurately quantifying the preceding grain is added, the detected preceding grain load information can accurately indicate the refined grain information of the input grain, which is highly effective.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. Reference numeral 1 denotes a milling cylinder of a milling machine, which has a supply port 2 at one upper end and a discharge cylinder 3 at a lower lower end. A bran removing screen 4 is provided in the grain mill 1 and the inside of the screen 4 is formed in a grain mill, and the grain chamber is provided with a mill roll 5 rotatable around a horizontal axis. A discharge valve 8 urged by an elastic body 7 is provided at a discharge section 6 of the grain mill. The starting end of the milling roll 5 is formed into a spiraling spiral, and the milling roll 3 is rotationally driven by a drive mechanism (not shown) to sequentially feed the kernels from the supply port 2 to the discharge unit 5 side.

A temporary hopper 9 for temporarily storing grains to be crushed is provided above the supply port 2 of the cereal cylinder 1, and branch valves 10, 2 for branching the grains from the temporary hopper 9 into two systems. A preceding grain storage unit 11 and a subsequent grain storage unit 12 are provided in each of the three paths. Reference numeral 13 denotes a preceding grain supply valve as an outflow regulating section of the preceding grain storing section, and reference numeral 14 denotes a subsequent grain supplying valve as an outflow regulating section of the succeeding grain storing section. The preceding grain storage unit 11
Is provided with a weight detecting means 15.

FIG. 2 shows a control block diagram.
As the input information to the apparatus, in addition to the detection information from the weight detection means 15, each detection result of the grain load detection means 17, which will be described later, the grain moisture detection means 18 attached to the temporary hopper 9, and the like, and the milling degree setting There is manual input information and the like by means 19.
On the other hand, the output information includes the switching control output of the branch valve 10, the opening / closing output of the preceding grain supply valve 13 and the subsequent grain supply valve 14, and the urging force adjusting means 20 of the elastic body 7 as the opening degree adjusting means of the discharge valve 8. There are outputs. Reference numeral 21 denotes a storage unit, and reference numeral 22 denotes an A / D converter. The opening / closing degree of the subsequent grain supply valve 14 is controlled, and the following grain supply flow rate control means 23 is used to control the opening / closing degree.

The control section 16 has the following functions. When a start switch (not shown) is turned on, a switching control output of the branch valve 10 is output, and the branch valve 10 is switched to be supplied to the preceding grain side. Next, by comparing the weight detection value by the weight detection means 15 with the set value w set in advance for the preceding grain, when the weight detection value reaches the set value, the branch valve 10 is switched to the subsequent grain storage unit 12 side. (FIG. 3). With such a configuration, a grain quantitative classification unit is obtained.

In addition, it has the following functions. Detecting the set milling degree (eg, the degree of milling when brown rice is milled) that is set and input prior to the start of the milling process, and inputting the detection information from the grain moisture detecting means 18 to the milling process. Calculates the milling time of the preceding grain while calculating the load, controls the milling of the preceding grain while constantly monitoring the milling load, and adjusts the milling load of the subsequent grain based on the milling load of the preceding grain. This is a configuration that can be set. Referring to FIG. 4 in detail, when the set degree of grain is detected and the grain moisture is detected, a standard value of the grain load in the grain is calculated and set. The milling load is detected by the milling load detecting means 17 and can be converted into, for example, a load current value of a motor for driving the milling roll 5, and a standard current value δ is set. Next, a milling time t based on the set milling degree in the preceding grain milling step is calculated and set. This milling time t may be obtained directly from the set milling degree η, or may be calculated from the above-mentioned standardized milling load value (standard current value δ). After such a preceding step, the preceding grain supply valve 13 is opened, and the grains are supplied into the grain mill 1, and the grain load (motor current value) in the grain mill 1 is detected by the grain load detecting means. The detected grain is compared with the standard current value δ to check whether the load condition is appropriate or not, and the preceding grain milling continues. When the milling load is out of the appropriate range, the preceding grain milling time t is corrected to be longer or shorter. Based on the checking of the milling load and the management of the time, when the milling time (including the correction time) t calculated and set in advance elapses, the subsequent grain supply valve 14 opens,
The discharge valve 8 is opened with the initially set opening degree. When checking whether the load condition is appropriate or not, the subsequent grain milling load is set together with the correction of the preceding grain milling time. Specifically, the control pressure of the spring 7 for urging the discharge valve 8 is set. After that, it enters into the normal-time milling load control. In setting the subsequent grain load, the supply amount of the subsequent grain may be controlled in addition to the setting of the discharge valve 8 described above.

The operation of the above example will be described. The desired degree of grain is input by a non-illustrated switch in advance by the degree of grain setting means 19. When the start switch is turned on, the refined grains are temporarily stored in the hopper 9, and thereafter guided by the branch valve 10 to the preceding grain storage section 11 having the weight detecting means 15. Therefore, the grain weight detecting means 15 reaches a predetermined grain weight (= predetermined value w) which is substantially equal to the capacity of the grain portion.
As a result, the weighing and securing of the preceding grain to be preceded at the start of the cereal grain is ensured and stored in the preceding grain storage unit 11.

When the predetermined value w is reached, the grains are stored in the subsequent grain storage section 12 according to a switching command to the branch valve 10. Therefore, the input grain is divided into a preceding grain and a surplus succeeding grain having a predetermined value that is substantially equal to the capacity of the grain portion.

Next, when a grain start instruction, for example, an operation switch (not shown) is turned on, the preceding grain supply valve 13 of the preceding grain storage section 11 is opened with the discharge valve 8 of the discharging section 5 closed, and the grain is opened. Is supplied to the supply port 2 of the milling cylinder 1 and is milled for a time t corresponding to the set milling load. Around the completion of the preceding grain refining, the subsequent grain supply valve 14 of the subsequent grain storage unit 12 is opened and supplied to the supply port 2 for refining.

The grain outlet 1 is opened from the closed state to discharge the preceding grains. After the discharge of the preceding grain, the subsequent grains successively hold the outlet of the grain portion at a predetermined opening degree.
Is crushed and discharged while receiving the load resistance.

As described above, before the preceding grain is supplied into the grain mill, grains corresponding to the content of the grain section are classified in advance,
Since the preceding grains can be supplied to the grain mill ahead of the start of the milling, the quantity of the preceding grains can be ensured, the processing of the preceding grains can be performed stably, and the milling can be performed based on the milling degree. Since the cereal time t is determined, it is possible to prevent the over-milling and the lack of the cereal grain, and to execute the precedence grain milling with high accuracy. As shown in FIG. 5, the higher the set grain degree, the longer the preceding grain milling time is set, and by extending the time of staying in the grain milling chamber, the degree of the preceding grain milling can be finished as desired. .

Further, the higher the moisture content of the grain, the lower the rigidity of the surface layer, and the easier it is to grain. Can be finished as desired even if the grain moisture value varies. Although the figure has been described in terms of two stages of high and low moisture levels, the present invention is not limited to the two stages, and may be formulated in three stages or steplessly based on previously tested data.

The actual preceding grain refining time t is based on the starting point of the supply of the preceding grain to the grain mill to start the grain refining, when the actual load detection value rises, or when the refining room is filled. When the load change rate is judged to be zero or less than a predetermined value (corresponding to the time indicating the peak value of the load information amount), etc., the time measurement is set to be an initial time, and the end time is signaled to input the subsequent grain. It is not particularly limited from the start of the milling to the end of the feeding of the preceding grain, for example, based on when the discharge valve 8 is opened from the closed state. May be configured to be stable.

FIG. 6 shows the end of the final grain judgment based on the preceding grain mill load information or the load information related thereto, and the final processing time is set in relation to the preceding grain mill set value or the actual value to thereby determine the end. It is a figure which shows the control flow of the means which eliminates the refined grain system of a processed grain.

Based on the subsequent grain milling load setting (discharge valve opening setting) set in the flow in FIG. 6, the subsequent grain milling load control routine shown in FIG. 6 is executed. That is, first, the final grain processing time is set together with the final grain determination load information setting. When the milling process is performed, the milling load is detected, and it is determined whether or not the detected load matches the end determination load set above. If the load is determined to be the final load, the final processing time is set, and the opening of the discharge valve 8 is controlled to decrease. When the operation in the reduced state reaches a predetermined time, the discharge valve is opened and the grain is finished.

The above-described series of operations will be described repeatedly with reference to the graph of FIG. 7. When a signal for inputting a preceding grain into the grain mill is issued, the milling load information (for example,
The current, power, torque, pressure inside the milling chamber, etc.) rises sharply from the no-load information value Φ0 at time T0 when the grains actually flow into the milling chamber with a slight time delay, and the time Tp All of the preceding grain volumes determined from the grain room capacity reach the milled grain load information peak value Φp that can be considered to have flowed into the room. Thereafter, the load information decreases as the grain progresses, and the time Ts determined from the set preceding grain milling time.
At the time of reaching, it is judged that the preceding grain is finished and the subsequent grain is started to be fed for the succeeding grain, and the preceding grain is discharged immediately before and after, and the subsequent grain is discharged to grind at a predetermined load. Adjust the valve to the desired opening. At this point, the load information rises again to indicate the subsequent grain refined state. Then, when the steady load state with uncertain fluctuation continues and the subsequent grain reaches the same amount as the preceding grain, the grain load information also reaches the grain load information peak value Φp or a load substantially proportional thereto. . This time point is determined as the end processing start time point, and from the time point Te0, the discharge valve opening is reduced by (Ts-Tp) or a time approximately proportional thereto to apply a load to achieve the same crushing state as the preceding grain. Mill. Then, at the time Te1, the final processing set time is completed, the discharge valve 8 is opened, the final processed kernel is discharged, and all of the input kernels are finished.

In this embodiment, the cereal grain is formed in a horizontal axis form, but may be a cereal grain formed in a vertical axis as in the prior art. In addition to rice milling equipment,
It can also be used for rice mills, hullers, mills, etc.

Further, in this embodiment, the load current value is used for the detection of the milling load by the milling load detecting means 17, but in addition to the current value, the electric power, the torque of the milling roll, the internal pressure in the milling chamber, etc. Can be converted to

FIGS. 8 and 9 show a configuration in which the preceding grain is separated from the supplied grain by a predetermined amount and the grain is milled while the outlet of the grain mill is closed, and the grain feeding means is interrupted by the change information of the milling load. Or, by controlling the deceleration, the milling load value fluctuates depending on the moisture and type of the raw material, etc., and the stability of the preceding grain volume may be lacking, resulting in incomplete milling or excessive milling. This is related to means for solving the problem.

Referring to FIG. 8, when a signal for charging is input to start feeding the preceding grain to the grain mill, the time from the time T0 when the grain actually flows into the grain mill with a slight time delay. The milling load information (current, power, torque, milling chamber internal pressure, etc.) rises sharply from the no-load information value Φ0, and at time Tp, all the preceding grain volumes determined from the milling chamber capacity flow into the room. The grain load information peak value Φp that can be considered is reached. After that, the load information decreases as the grain progresses, and when the time reaches the time Ts determined from the set preceding grain milling time, it is determined that the preceding grain milling is finished, and the subsequent grain is input for the subsequent grain milling. The discharge valve is adjusted to a predetermined opening so as to discharge the preceding grains at the start and immediately before and after and to grind the subsequent grains at a predetermined load. At this point, the load information rises again to indicate the subsequent grain refined state.

The above-mentioned milling load information characteristics include not only external requirements such as voltage conditions applied to the power system of the milling machine, but also properties of the input grain, that is, flexibility of the grain due to the magnitude of water content, Even with the same water content, it depends on the degree of solidity of the biological tissue during the growth process, or on the hardness of the grain due to deterioration due to the difference in storage conditions, and also due to the roughness of the grain surface caused by processing and storage deterioration in the previous process. It changes greatly due to the difference in friction coefficient between grains. To explain one example, brown rice of the same varieties of fresh rice is humidified, brown rice moisture is changed, and polished as preceding grains with both the preceding grain load characteristics indicated by the solid and broken lines. The characteristic is remarkably present in the peak value Φp of the milling load information that can be regarded as having all the preceding grain volume flowing into the room and the change up to that. The high-moisture product has a smaller grain load information peak value Φp than the low-moisture product.

Therefore, for grains under various conditions,
If the preceding grain input is determined based on the grain load information peak value Φp, the quantitative accuracy is extremely unstable. Therefore, the change in the grain load information is sequentially detected, and when the change is equal to or less than the set value, it is determined that the grain load is at or near the peak of the grain load. By controlling the stop or the deceleration, it is possible to eliminate the instability of the milling accuracy due to the difference in the grain moisture, which has conventionally been difficult to achieve the stable milling accuracy. It should be noted that the present invention is not limited to the moisture difference, and the same applies to the difficulty of cereal grains caused by the various factors described above.

The remarkable results are as follows. In rice, a rice milling machine, a grinding rice milling machine which achieves a higher degree of whiteness than usual, or a rice milling machine for the purpose of improving preservability, sterilization, and reducing protein. Rice milling machine for milling and other water content of 1
In various types of flour mills applicable to a wide range of about 8% to 10%, the effect of the present means is more remarkable since there is a load fluctuation range larger than that of a normal rice mill.

If the time at which the grain load information peak value .PHI.p arrives or the magnitude of the change in the grain load information up to that time deviates from the allowable range determined from past performance data, it is determined that the grain is defective. By performing the abnormal display so as to interrupt the subsequent grain refinement, it is possible to execute a process with higher reliability since it is not necessary to remove most of the input grain from the defective grain. In addition, the above is not limited to rice milling machines, and when applied to a rice milling machine that re-mills rice, the effects of deterioration after milling and variations in the surface of the milled rice are more remarkable than brown rice. The effect is even greater. The same effect can also be obtained in a mill for milling wheat, naked barley, buckwheat, etc., and a processing machine for removing the surface layer of grains at the first stage of the milling and improving the milling accuracy at the second stage.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a first embodiment.

FIG. 2 is a control block diagram.

FIG. 3 is a flowchart.

FIG. 4 is a flowchart.

FIG. 5 is a graph showing a relation between a set time of a preceding grain and a load change state of a preceding grain load.

FIG. 6 is a flowchart.

FIG. 7 is a grain load information characteristic graph.

FIG. 8 is a preceding grain load information characteristic graph.

FIG. 9 is a flowchart.

[Explanation of symbols]

1 ... milling cylinder, 2 ... supply opening, 3 ... discharge cylinder, 4 ... branking screen, 5 ... milling roll, 6 ... discharge unit, 7 ... elasticity Body, 8 ... discharge valve, 9 ... temporary hopper, 10 ... branch valve,
11 ... preceding grain storage unit, 12 ... subsequent grain storage unit, 13 ...
Leading grain supply valve, 14 ... trailing grain supply valve, 15 ... weight detecting means, 16 ... control unit, 17 ... grain load detecting means, 1
8 ... Grain moisture detection means, 19 ... Grain degree setting means, 2
0: biasing force adjusting means, 21: storage unit, 22: A / D
converter

Claims (2)

[Claims] Claims: 1. A grain to be supplied to a grain mill is supplied in advance at the time of commencement of the grain refinement, the outlet of the grain mill is closed, and the grain is processed in a predetermined manner. In a cereal mill that feeds and crushes, a crushing load detecting means for detecting a crushing load at the time of preceding grain crushing is provided, and a crushing load of a subsequent grain is set based on the load information at the time of preceding grain milling. Milling device provided with control means for performing 2. A grain to be supplied to a grain-milling machine is supplied in advance of the start of grain-milling, the outlet of the grain-milling part is closed, a predetermined grain-milling process is performed, and after the preceding grain is discharged, the subsequent grain is continuously processed. In a cereal mill that performs crushing while supplying, a crushing load detecting means for detecting a crushing load at the time of preceding grain crushing is provided, and based on the load information at the time of the preceding grain crushing, the crushing of the preceding grain at the final stage A grain mill comprising a determination means for making a determination.