JPH07213928A - Apparatus for controlling gap between rolls in huller - Google Patents

Abstract

PURPOSE:To prevent inconvinience caused by decrease in the rate of threshing from occurring by providing a means for preventing the decrease in the rate of threshing from occurring and controlling it, where this means outputs a command signal for controlling the opening of the gap between rolls when the value of electric current of detection loading is at least larger than the value of electric current of the lower limit controlling standard loading. CONSTITUTION:When the roll gap between fuller rolls is controlled by the standard of the rate of threshing, a rate of threshing for control standard is set by a threshing rate setting means 33 and a lower limit controlling standard loading value corresponding to this rate of threshing for control standard is read in. Then, the rate of threshing is operated by the detecting information of a sensor 29 for the rate of threshing and the loading electric current value of a main motor 30 is detected. Then, the rate of threshing for control standard and the operated rate of threshing are compared with each other. When this operated threshing rate is higher than the set rate of threshing for control standard, in addition, the detected loading electric current value is compared with the lower limit controlling standard loading electric current value corresponding to the rate of threshing for control standard and, when the detected loading electric current value is larger than the lower limit control standard loading electric current value, the gap between rolls is controlled to be opened at a specified gap by a means 32 for preventing the rate of threshing from decreasing and controlling it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll gap adjusting device in a hulling machine that hulls a pair of hulling rolls.

[0002]

2. Description of the Related Art In a hulling device that hulls with a pair of hulling rolls, when the roll clearance is adjusted on the basis of the husking rate, the lowest husking rate that can be artificially set by the husking rate setting means. The lower limit control reference load current value corresponding to is set, and the hulling work is performed while preventing the load current value of the motor driving the hulling roll from becoming lower than the lower limit load current value. However, the construction was such that hulling work at a low removal rate was prevented.

[0003]

In such a conventional apparatus, when it is desired to perform hulling work with a high removal rate, the calculated removal rate by the removal rate sensor tends to be calculated higher. Had a problem that the removal rate was low and the low removal rate could not be prevented. Therefore, in the present invention, when the roll clearance of the hulling roll is adjusted by the removal rate control,
A special combination of the load current value control based on the load current value of the motor for driving hulling rolls is intended to prevent the low shedding rate and eliminate the drawbacks of the conventional device. Is.

[0004]

The technical means of the present invention for solving such a technical problem is a pair of hulling rolls 7, 7 for hulling, and the hulling roll 7 , 7 for driving the main motor 30, a roll gap adjusting motor 34 for opening and closing the gap between the pair of hulling rolls 7, 7, and a main motor 30.
In a hulling machine having a load current sensor 31 for detecting a load current value of No. 1, a depletion rate sensor 29 for determining whether the paddy rice hulled by the hulling rolls 7, 7 is paddy or brown rice. A removal rate calculating means for calculating the removal rate based on the result of discrimination of paddy / brown rice by the removal rate sensor 29, a removal rate setting means 33 for manually setting the removal rate, and the removal rate. A lower limit control reference load current value detecting means for selecting any one of the lower limit control reference load current values corresponding to the set removal rate which is set high or low by the rate setting means 33, and a hulling roller based on the removal rate. -If the calculated dep rate during roll clearance adjustment control of rolls 7 and 7 is higher than the set control reference dep rate, it also corresponds to the detected load current value and the set control reference dep rate. The lower limit control reference load current value is compared and the detected load current value is larger than the lower limit control reference load current value. A, b - b of rice huller comprising a husking rate reduction inhibiting control means opening adjusting command signal Le gap is output - is to have a structure of Le clearance control device.

[0005]

When adjusting the roll gap of the hulling rolls 7, 7 on the basis of the removing rate, the removing rate setting means 33 sets a desired control reference removing rate, which is set. The lower limit control reference load current value corresponding to the control reference removal rate is read.
Next, the removal rate is calculated from the detection information of the removal rate sensor 29, and the load current value of the main motor 30 is detected. Next, the set control reference removal rate is compared with the calculated removal rate, and when the calculated removal rate is higher than the set control removal rate, the detected load current value is further set. The lower limit control reference load current value corresponding to the control reference removal rate is compared, and when the detected load current value is higher than the corresponding lower limit control reference load current value, the roll clearance is adjusted to a predetermined clearance.

[0006]

Embodiments of the present invention shown in the drawings will be described below. First, based on FIG. 1, an overall configuration of a hulling / sorting machine will be described. In this hulling and sorting machine, the hulling part 1 for hulling is placed in the upper front part, the slidable rice wind selecting part 2 for wind-selecting the slid rice from the hulling part 1 is placed in the lower front part, and the mixed rice is hulled. A rocking sorting device type mixed rice sorting unit 3 for separating and sorting brown rice is arranged at each of the rear portions, and a mixed rice fried machine 4 is arranged at an intermediate portion in the front-rear direction of the machine body. A brown rice frying machine 5 is arranged behind the sorting unit 3.

The hulling section 1 includes a hull hopper 6, a hull roll 7,
7, a hull chamber 8 and the like. The scraped rice style selection unit 2
The falling rice wind selection path 10, in which the sorting start end side is located at the rear lower position, and is obliquely installed so that the end end side becomes higher sequentially,
It is composed of a suction dust collector 11, a scraped rice trough 12, a rice bran trough 13, and the like. Sliding rice from the hulling section 1 is the sliding rice-style selection path 10
When it is supplied to the sorting start end side of No. 1, it is sorted by the sorting wind, and light rice husks and dusts are discharged to the outside of the machine through the suction dust collector 11 and the dust collector 14, and are also relatively light. The rice gruel is dropped and sorted into the rice gruel receiving trough 13, and the mixed rice of heavy paddy / brown rice is dropped and sorted into the scraped rice dredge 12. The mixed rice dropped and sorted on the slide-down rice receiving trough 12 is conveyed to one side by the transfer spiral of the slide-down rice receiving trough 12, and is then fried by the mixed-rice fried machine 4 to be mixed-rice sorting unit 3 Is supplied to the mixed rice hopper 15.

Next, the mixed rice sorting unit 3 constituted by the swing sorting device 16 will be described. Multi-stage swing selection plate 1
A large number of irregularities for selection are provided on the plate surfaces of 7, 17, ..., And the vertical direction from the high supply side to the low discharge side of the swing selection plates 17, 17 ,. (In the front-back direction orthogonal to the direction), so that the grains flow, and also in the horizontal direction (the left-right direction orthogonal to the paper surface of FIG. 1) which is the sorting direction orthogonal to the vertical direction. , One side of the rocking side is high and the other side of the rocking side is low, and the discharge side of the rocking sorting plates 17, 17, ... Is the discharge opening portion of the sorted grain. The rocking sorting plate 17 is arranged so that the lateral direction is along the front-rear direction of the machine body (the left-right direction in FIG. 1), and the rocking arm (not shown) reciprocally rocks laterally up and down. I am trying.

The mixed rice fed from the mixed-rice fried machine 4 to the mixed-rice hopper 15 passes through a distribution / supply gutter 18 and a distribution case 19, and is supplied in a high vertical direction to the rocking sorting plates 17, 17 ,. On the side, and from a supply port (not shown) formed on the upper side in the horizontal direction, each of them is supplied. A brown rice partition plate 20 and a paddy partition plate 21 are provided so as to face the discharge side of the rocking sorting plates 17, 17 ,. Brown rice, mixed rice having a non-uniform distribution in the lateral middle portion, and paddy having a non-uniform distribution in the lateral swaying side are separated by brown rice partition plate 20 and paddy partition plate 21, respectively, and taken out.

The brown rice thus partitioned passes through the brown rice receiving trough 22 and the brown rice flow path 23, and is taken out of the machine from the rear brown rice lifting machine 5. Further, the mixed rice partitioned by the brown rice partition plate 20 and the paddy partition plate 21 is conveyed to one side by the mixed rice flow path 24 and the mixed rice spiral 25, and then supplied to the mixed rice fried machine 4 and then fried. After being crushed, it passes through the mixed rice hopper 15, the distribution / supply trough 18, the distribution case 19, and again the swing selection plates 17, 1.
It is supplied to 7, ... Also,
The paddy separated by the paddy partition plate 21 flows from the paddy trough 26 through the paddy flow path 27 into the paddy grain elevator 28 (which is arranged on the lateral side of the mixed rice grain elevator 4) and then the paddy. The grain is fried by the grain fried machine 28, returned to the grain hulling chamber 8 via the grain hopper 6, and again grained.

Next, FIGS. 2 to 4 will be described. Two
Reference numeral 9 is a depletion rate sensor that includes a light emitting element and a light receiving element, and detects whether the paddy rice slid off by the paddy section 1 is paddy or brown rice. Grains are supplied to the depulling rate sensor 29. Reference numeral 30 denotes a main motor that drives a hulling / sorting machine, and has a configuration in which a pair of hulling rolls 7 are driven from the main motor 30 via a conductive belt (not shown). It should be noted that only the hulling rolls 7 may be driven by the hulling motor. Reference numeral 31 is a load current sensor for detecting the load current value of the main motor 30.

The removal rate sensor 29 includes a sample-hold circuit, an A / D conversion circuit (not shown), a CPU having a built-in operation section and a register section, a program memory, and an operation control section including an operation memory. This is a configuration input to 32. Reference numeral 33 denotes a take-off rate setting switch. The take-off rate setting switch 33 has a function of setting the take-off rate of the falling rice hulled by the hulling rolls 7 to high or low, and an arithmetic control unit. Connected to 32.

Further, the roll clearance adjusting motor 3 is output from the arithmetic and control unit 32 via an output interface (not shown).
A control command signal is output to 4 to rotate the roll gap adjusting motor 34 in the forward or reverse direction to open and close the gap between the hulling rolls 7, 7. Next, the arithmetic control unit 3
The control content of 2 will be described. First, adjust the removal rate setting switch 33 to operate
The desired control reference removal rate is set, the operation switch (not shown) is turned on, and the rotating parts of the paddy sorting machine are driven.

Next, the initial clearance setting control of the hulling rolls 7 is first performed. That is, a roll gap opening command signal from the arithmetic and control unit 32 is output to the roll gap adjusting motor 34 to adjust the gap between the hulling rolls 7 and 7 for a predetermined time, and the load current sensor 31. Detects a non-contact state in which the detected load current value does not change, a roll gap close command signal is output and the roll gap is closed and adjusted. Next, when the load current sensor 31 detects an increase in the load current value, it is determined that the hulling rolls 7 and 7 are in slight contact, and then an opening command signal of the roll gap is output, and the roll gap adjusting mode is output. -The switch 34 is opened for a predetermined time and the initial gap (for example, 1 m) is set.
The adjustment setting is made in m). Next, an open command signal for the paddy supply control valve (not shown) is output from the arithmetic and control unit 32 to set the initial opening degree for opening the paddy supply control valve to a predetermined valve opening (for example, 10 mm). The sliding work is started.

Next, a supply amount setting switch (not shown)
A control command signal is output based on the adjustment setting of the supply amount of, and the paddy supply adjusting valve is changed and adjusted to one corresponding to the set efficiency valve opening degree. Next, the control shifts to the roll gap adjustment control based on the removal rate standard. That is, the light amount of the removal rate sensor 29 is adjusted, and the light emitting element is adjusted to an appropriate light amount for discriminating between paddy and brown rice. Next, when the voltage signal of the grain that has passed through the desquamation rate sensor 29 is input to the arithmetic control unit 32 and the voltage signal of a predetermined number of sample grains is read, the desquamation rate is calculated.

Next, the control reference removal rate set by the removal rate setting switch 33 in the arithmetic and control unit 32 is compared with the calculated removal rate, and when the control reference removal rate is higher than the calculated removal rate. (Or, if it is low), the operation control section 32 outputs an open adjustment (or close adjustment) command signal to the roll gap adjustment motor 34, so that the roll gap is open on the predetermined gap open side (or It is adjusted to the closed side) to return to the set standard removal rate. If the calculated removal rate is within the range of the reference removal rate, the control command signal is not output and the hulling work is continued while maintaining the roll gap as it is. Next, the dropout rate reduction prevention control performed in the process of the above-described dropout rate control will be described. That is, the set removal rates DS1, DS2 and DS set by the removal rate setting switch 33.
3, lower limit control reference load current values IL1, IL2, IL3 corresponding to DS4 (DS1>DS2>DS3> DS4)
IL4 (IL1>IL2>IL3> IL4) is read. Next, the removal rate is calculated and the main motor 30
When the load current value of is detected, first, the set removal rate and the calculated removal rate are compared. If the calculated removal rate is within the set removal rate range, it is returned without adjustment control, and
When the set removal rate is higher than the calculated removal rate, the roll clearance is adjusted to a predetermined clearance. In addition, when the calculated removal rate is higher than the set removal rate, the detected load current value and the lower limit control reference load current value IL corresponding to the set removal rate are then further compared to determine the detected load current value I. When it is larger than the corresponding lower limit control reference load current value IL, the roll clearance is adjusted to a predetermined clearance. Therefore, depending on the type of paddy, there is a tendency for the decapsulation rate to be erroneously detected and the decapsulation rate tends to be calculated higher. Therefore, the opening adjustment of the roll gap is reduced, and problems such as a decrease in efficiency in the mixed rice sorting unit 3 due to a decrease in the removal rate can be solved. The lower limit control reference load current values IL1, IL2, IL3, IL4 may be configured so that the operator can manually adjust them.

Next, the high removal rate prevention control (not shown) will be described. The control reference removal rate is set to high or low by the removal rate setting switch 33, and the upper limit control reference load current value IH1 corresponding to the set control reference removal rates DS1, DS2, DS3, DS4 set to high or low. , IH2, IH
3, IH4 (IH1>IH2>IH3> IH4)
The data is stored as data, and the corresponding upper limit control reference load current value is read from this data. Next, the removal rate is calculated and the load current value of the main motor 30 is detected. Next, the set dep rate is compared with the calculated dep rate. If the calculated dep rate is within the set dep rate, the roll gap is not adjusted and controlled, and the roll gap remains unchanged. When the calculated removal rate is lower than the set removal rate, the detected load current value is further compared with the upper limit control reference load current value IH corresponding to the set removal rate to detect the detected load current value. When I is lower than the corresponding upper limit control reference negative reference load current value IH, the roll clearance is adjusted to a predetermined clearance.

Next, the operation of the embodiment shown in FIG. 1 will be described. When performing a hulling / sorting operation, the rotating parts of the machine body are driven, the paddy is put in the paddy hopper 6, and the paddy is supplied to the paddy chamber 8. Then, the rice is hulled in the hulling chambers 8 which are rotating in the opposite directions, and the falling rice is dropped and supplied to the downward sliding rice wind selection path 10. Next, the slid rice that has been supplied to the slid rice wind selection path 10 is wind-selected by the sorting wind, and the light rice husks flow toward the end side of the slide rice wind selection path 10, and the suction dust collector 11, the dust collector 1
After being discharged to the outside of the machine through 4, the rice gruel that is relatively light is dropped and sorted into the rice gruel 13 and the mixed rice of heavy paddy and brown rice is dropped and sorted into the scraped rice grove 12.

Next, the fallen rice dropped and sorted on the fallen rice trough 12 is conveyed to one side by the fallen rice spiral, and then,
The rice is fried by the mixed rice fried machine 4, passed through the mixed rice hopper 15, the distribution / supply gutter 18, and the distribution case 19, and then the rocking sorting plates 17, 1
7, ... The mixed rice fed to the oscillating selection plates 17, 17, ... Is reciprocally oscillated vertically and horizontally by an oscillating arm (not shown), so that the grain size is large, the specific gravity is large, or the friction resistance is different. The brown rice that has been sorted out by the like, and has been unevenly distributed in the lateral upswing is separated by the brown rice partition plate 20 and taken out, passed through the brown rice gutter 22 and the brown rice flow path 23, and then fried by the brown rice lifting machine 5. It is taken out of the plane. Further, the mixed rice that is unevenly distributed in the lateral middle portion of the rocking sorting plates 17, 17, ... Is separated by the brown rice partition plate 20 and the paddy partition plate 21 and taken out, and the mixed rice flow path 24 and the mixed rice spiral 25. , The mixed rice fried machine 4, the mixed rice hopper 15, the distribution / supply gutter 18, and the distribution case 19, and are supplied to the rocking sorting plates 17, 17 ,. Further, the non-uniformly distributed paddy on the rocking side of the rocking sorting plates 17, 17, ... Is separated by the paddy partition plate 21 and taken out, and the mixed rice spiral 25, the paddy flow path 27, and the paddy grain grinder 28. After that, the rice is returned to the hulling chamber 8 and again hulled.

The hulls are sorted in this manner. At the beginning of the work, when the rotating parts of the hull sorting machine are driven, the initial gap setting control of the hull rolls 7 is first performed. Then, the roll clearance of the hulling rolls 7, 7 is adjusted to a predetermined initial clearance, and then the initial opening of a paddy supply control valve (not shown) is set to set the paddy supply control valve to a predetermined value. The hulling work is started by opening the valve opening degree of No. 2, and then the paddy supply adjusting valve is adjusted to the valve opening degree of the set efficiency based on the adjustment of the supply amount of the supply amount setting switch (not shown).

Next, the control shifts to the roll gap adjustment control based on the depletion rate reference, the control reference depletion rate and the calculated depletion rate are compared, and when the calculated depletion rate is higher than the control reference depletion rate. (Or, if it is low), the arithmetic control unit 32 causes the
A control command signal for opening adjustment or closing adjustment of the roll gap is output to adjust the roll gap, and the hulling operation is performed while returning to the set control reference removal rate.

During such a removal rate control, a removal rate reduction prevention control is performed. Removal rate setting switch 33
Set control reference removal rate DS1, DS set in
2, one of the lower limit control reference load current values IL1, IL2, IL3, IL4 corresponding to DS3, DS4 is read, and then the removal rate is calculated and the main motor 30
When the load current value of is detected, the set control reference removal rate is compared with the calculated removal rate. The roll gap is not adjusted when the calculated dep rate is within the set control reference dep rate, but when the calculated dep rate is lower than the set control dep rate, the roll gap is not adjusted. When the gap is adjusted to a predetermined gap and the calculated reference depletion rate is higher, the lower limit control corresponding to the detected load current value and the set control depletion rate is further applied. The reference load current value IL is compared, and the detected load current value I corresponds to the lower limit load current value IL
When it is larger, the roll gap is adjusted to a predetermined gap, and when the detected load current value I is smaller than the corresponding lower limit load current value IL, the roll gap is not adjusted and the roll gap is not adjusted. -Maintains the gap.

Therefore, when the removal rate tends to be erroneously detected depending on the kind of paddy and the removal rate tends to be calculated higher, comparison of removal rate and comparison of load current values are performed. As a result, since the roll gap is opened and adjusted, the adjustment of the roll gap open adjustment is reduced, and a problem due to a decrease in the removal rate can be prevented.

[0024]

As described above, according to the present invention, when the removal rate detection tends to be an erroneous detection depending on the kind of paddy, the load current following the comparison based on the removal rate is used. After the additional comparison on the value basis, the opening of the roll gap is adjusted, so that it is difficult to adjust the opening of the roll gap, and it is possible to prevent a problem due to a decrease in the removal rate.

[Brief description of drawings]

[Figure 1] Whole cut side view

FIG. 2 is a block circuit diagram.

[Fig. 3] Flow chart

FIG. 4 is a table showing relationships between graphs and data.

[Explanation of symbols] 1 hulling part 2 sludge-rice selection part 3 mixed-rice sorting part 4 mixed-rice grain elevator 5 brown-rice grain elevator 6 paddy hopper 7 paddy roll 8 paddy room 9 paddy rice wind Selection box body 10 Sliding rice wind selection path 11 Suction dust collector 12 Sliding rice gutter 13 Pile gutter 14 Dust collecting cylinder 15 Mixed rice hopper 16 Swing sorter 17 Swing sorter plate 18 Distribution supply gutter 19 Distributor -Su 20 Brown rice partition plate 21 Paddy partition plate 22 Brown rice gutter 23 Brown rice flow path 24 Mixed rice flow path 25 Mixed rice spiral 26 Paddy gutter 27 Paddy flow path 28 Paddy grain grinder 29 Depletion rate sensor 30 Main motor 31 load current sensor 32 arithmetic control unit 33 removal rate setting switch (desorption rate setting means) 34 roll gap adjustment motor

Claims (1)

[Claims] 1. A pair of hulling rolls 7, 7 for hulling,
A main motor 30 for driving the hulling rolls 7, 7, a roll gap adjusting motor 34 for opening and closing the gap between the pair of hulling rolls 7, 7, and a main motor. In a hulling machine having a load current sensor 31 for detecting a load current value of 30, a hull rolling
The removal rate sensor 29 for determining whether the paddy rice is hulled or hulled rice hulled in Steps 7 and 7, and the removal rate is calculated based on the result of the rice removal / brown rice discrimination by the removal rate sensor 29. A pull rate calculating means and a pull rate setting means 33 for manually setting the level of the pull rate.
And a lower limit control reference load current value detecting means for selecting any one of the lower limit control reference load current values corresponding to the set removing rate set by the removal rate setting means 33, and the removal rate reference. In the case where the calculated removal rate during the roll clearance adjustment control of the hulling rolls 7 and 7 is higher than the set control reference removal rate, the detected load current value and the set control reference are further added. The lower limit control reference load current value corresponding to the removal rate is compared, and when the detected load current value is larger than the lower limit control reference load current value, an opening adjustment command signal for the roll gap is output. A roll gap control device for a huller, which comprises a rate reduction prevention control means.