JPH06207B2 - Removal device for hulling machine - Google Patents

Description

The present invention relates to a grain hulling machine having a pair of derolling rolls, which is equipped with a dewetting rate measuring sensor for detecting a dewetting rate of mixed rice that has been stripped by the derolling, The present invention relates to a deregulation device that adjusts the clearance of derolling on the basis of the output of the sensor and constantly controls the desorption rate.

"Prior art" A means for activating an alarm or stopping the control, for example, when the detection value of the desorption rate measuring sensor is smaller than a certain value and the mixing of immature rice or glutinous rice is increased. For example, the applicant has already applied for it. There is a Japanese Patent Application No. 59-126604.

“Problems to be solved by the invention” However, in the case of the above-mentioned means, it is difficult to preset the boundary value which is the criterion for this, particularly in the case of unripe rice,
However, there was a drawback in that it was not possible to accurately detect the state of contamination of unripe rice or glutinous rice.

"Means for Solving the Problem" Therefore, in the present invention, in the control device that adjusts the derolling gap based on the output of the desorption rate sensor, the sensor outputs before the desorption rate automatic control start and after the desorption rate automatic control start. It is characterized in that a comparison means for comparing is provided and a controller is provided for outputting at least one of an alarm signal and a roll gap control stop signal when the sensor output difference in the comparison means is less than a predetermined value.

[Working] According to the present invention, therefore, accurate immature rice and pomegranate rice can be accurately determined based on only the detection value of the removal rate sensor without separately setting a boundary value which is a criterion for judging immature rice or pomegranate rice. As a result, detection can be performed, and as a result, constant control of the removal rate can be performed economically and reliably.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings. First
FIG. 1 is a decontrolling circuit diagram of a huller showing essential parts, FIG. 2 is an overall view of the same, and FIG. 3 is a sectional view thereof. In the figure, (1) is a hulling machine, (2) is a hopper for throwing in the paddy, (3) and (4) are a pair of derollers that are placed opposite to the lower part of the hopper (2), and (5) is the hopper. (2) Shutter that opens and closes the lower part, (6) is each roll
(3) A deployment lever for emergency opening of (4) by manual operation,
(7) is a step drive type de-motor which is a de-rate adjusting motor for adjusting the gap between the rolls (3) and (4).

In the figure, (8) is a wind-selecting section on which the hulling section (1) is mounted, and removes small rice from brown rice taking out gutter (9) and brown rice conveyor (10), and brown rice falling on the gutter (9). Karatomi (11), a small rice pick-up gutter (12) and a small rice conveyor (13) that carry the small rice out of the machine,
The derolling is carried out through the shell particle scattering plate (14) and the shell plate (15).
(3) (4) Sliding rice pick-up gutter (16) that receives slid rice (brown rice and paddy) facing downward and a sliding rice conveyor (17), and rice grains that are separated from the slid rice. It is provided with a take-out gutter (18) and a rice porridge conveyor (19), and an intake / exhaust dust fan (20) for discharging the rice husk separated from the scraped rice to the outside of the machine.

In the figure, (21) is a sorting section that is placed on the wind selecting section (8) and is installed in parallel with the hulling section (1). As shown in FIG. Upper and lower sorting cylinders (22) (2
3), supporting rolls (24), ... (25), which rotatably support the tubes (22) and (23) respectively, and a mixed rice supply tank (26) provided outside one end of the upper selection tube (22). A supply conveyor (27) and a re-graining conveyor (28) and a brown rice receiving conveyor (29) to be inserted in the upper sorting cylinder (22), and a brown rice receiving conveyor (30) to be inserted in the lower sorting cylinder (23). , A rice sorter (31) installed between the upper and lower brown rice receiving conveyors (29) (30) and connecting them in series, and an upper sorting cylinder (22)
Chute (32) that connects the paddy discharge end of the box to the hopper (2)
And a chute (33) that connects the re-graining conveyor (28) to the lower sorting cylinder (23), and a chute that slides the mixed rice discharge end of the lower sorting cylinder (23) to the rice sorting gutter (16). (34) and a shoot that connects the brown rice receiving conveyor (30) to the brown rice removing gutter (9)
(35) and

And the brown rice lifting conveyor (36) that communicates the lower end side to the brown rice conveyor (10), and the sorted rice lifting conveyor (37) that communicates the lower end side to the scraped-down rice conveyor (17) outside the machine. Along with standing alongside, the supply tank (26) is connected to the upper end of the selection rice lifting conveyor (37) by a connecting pipe (38), and the rice that has slid off the rice hull portion (1) and the selection portion. (twenty one)
Return pipe of the bypass pipe (39) which is a bypass part for diverting the mixed rice to join and reach the sorting part (21)
(38), and also the brown rice conveyor (17) and the lifting conveyor (37) at the junction (40) to the lower end of the bypass pipe (39) is connected, similar to each conveyor (36) (37) To the bypass pipe (3
Install 9) along the outside of this machine.

FIGS. 5 to 6 are enlarged cross-sectional views of the bypass pipe (39), in which the container (41) which is a hopper for measuring the weight of downflow is installed in the bypass pipe (39), and the bypass pipe (39) is provided on both sides of the container (41). The overflow gutters (42) (42) are integrally configured, and the container (41) is kept constantly filled with the mixed rice, and the excess mixed rice leaks into the overflow gutter (42) from the upper edge of the container (41). Along with lowering, a grain outlet (43) is opened in the center of the lower part of the container (41) so that a fixed amount of mixed rice is continuously dropped.

The bracket (4) is attached to the bypass pipe (39) below the container (41).
The sensing shaft (45) is rotatably supported via (4), and the receiving plate (47) is fixed to the other end of the sensor arm (46) whose one end is fixed to the middle of the shaft (45). ) As a fulcrum to support the receiving plate (47) so as to be able to move up and down, and the receiving plate (47) is tilted in the left-right direction substantially orthogonal to the vertical swing direction so that the receiving plate (47) is received substantially directly below the outlet (43). Position the board (47). And one end of the sensing shaft (45) is interlockingly connected to a potentiometer (49) fixedly supported by a bracket (48), a weight arm (50) horizontally provided in the opposite direction to the sensor arm (46), and a vertically downward direction. The weight arms (51) that hang down are fixed to the ends of the sensing shaft (45). Further, a weight (52), which is a balance member that gives a balance force in a direction opposite to the acting force of the receiving plate (47), is attached to at least one of the weight arms (50) (51), and the weight (52) is attached from the outlet (43). Falling mixed rice plate (47)
And the contact plate (47) and the potentiometer (49) are used to form a removal rate sensor (53) that is a removal rate measurement sensor, and the weight of the mixed rice and the weight (52). ), The sensor arm (46) and the sensing shaft (45) are rotated, and the falling weight of the mixed rice falling from the outlet (43) is detected via a potentiometer (49). ing. Further, an overflow sensor (54) is installed outside the container (41), and the container (41)
When a certain amount of mixed rice is full and is in an overflow state, this is detected by turning on the switch (55).

As shown in FIG. 7, the unrolled rolls (3) and (4) are
6) (57), (58) and (59) are interlockingly connected, and the secondary derolling roll (4) is used as the gap adjusting ink (60). Slider (61). The demotoring is performed via the gap adjusting shaft (62) and the gears (63) (64).
It is connected to (7) so that the hull gap (C) of the derolling rolls (3) and (4) can be controlled by opening and closing as appropriate by the forward and reverse rotation drive of the motor (7). Further, the screw portion (6
The moving element (65) is screwed to 2a), and the moving element (65) is also attached.
The roll maximum opening limit switch (66), which is a roll position switch operated by, is fixed to the machine frame (67), and when the rolls (3) and (4) are opened to the maximum by the drive of the motor (7), The switch (66) is provided to detect this. Further, the rolls (3) and (4) and roll transmission gears
(56) (57) (58) (59) built-in case removal (67) has a microphone (68), which is a microphone sensor that detects the change of this driving sound when the removal roll (3) (4) rotates. The gear (56) (57) (58) (59) that changes depending on the contact during rotation of the derolling (3) (4) is provided with the microphone (68).
And the zero state of the hull gap (C) is detected via the microphone (68).

As shown in FIG. 4, in the upper sorting cylinder (22), a sorting quantity sensor (69) for detecting a change in the sorting quantity, which is the quantity of mixed rice supplied to the barrel (22), is detected by a potentiometer (69). 7
0).

As shown in the control circuit of the removal motor (7) in FIG. 1, a removal control circuit constituted by a microcomputer (71)
The power source (73) is applied to the (71a) via the main switch (72), and the changeover switch (74) for switching between automatic and manual adjustment is connected to the control circuit (71a), and the release rate sensor (53) The potentiometer (49) is connected to the control circuit (71a) via the detection value adjusting circuit (75), so that the adjustment circuit (75) adjusts the detection value on the production line of the potentiometer (49). Constitute.

Further, the microphone (68) for detecting the driving sound of the gears (56) (57) (58) (59) at the time of contact with the derolling (3) (4) is connected to the control circuit (via the bandpass filter (76). 71a), the shutter switch (77) for detecting the shutter (5) at the bottom of the hopper (2) when it is opened, and the maximum opening operation of the rolls (3), (4). Roll position switch (66) and derolling (3) by operating the expansion lever (6)
A deployment lever operation detection switch (78) for detecting the emergency opening of (4), an overflow switch (55) of the removal rate sensor (53), and an OK control operation switch for performing this removal control and automatic start release. The switch (79) and the control circuit (7
Connect to 1a).

Furthermore, a sorting amount sensor (70) for detecting the amount of mixed rice in the sorting cylinder (22), and a removal rate setting device (80) for adjusting the clearance (C) of the derolling rolls (3), (4) by dial operation. And the control circuit
(71a), the de-motor (7) via the drive circuit (81), and the de-rolling (3) (4) opening and closing by manual operation Manual override manual opening and closing switch (82) Are respectively connected to the control circuit (71a).

Furthermore, each lamp (83) (84) (85) which is an alarm device for notifying the appropriate or high rate or low rate of the removal rate detected by the removal rate sensor (53) is provided with a removal rate table circuit (86). , And the sorting amount indicator (87), which is a monitor for displaying the sorting amount detected by the sorting amount sensor (70) in a bar graph system, is connected to the control circuit (71a), respectively, and A grain indicator (88), an automatic indicator (89), a manual indicator (90) and a buzzer (91) as an alarm member are connected to the control circuit (71a).

Further, in the case of a large amount of unripe rice mixed, the control circuit (71a) is provided with an unripe rice detector (93) which is a comparison means for comparing the outputs of the pre-control and post-control desorption rate sensors (53). when the sample average removal rate a after control to the sample average removal rate a ₁ is not large (when a ≒ a ₁ not a> a ₁ a)
That is, the detector (93) is configured to detect this when the control does not change at all and to activate the buzzer (91) and interrupt the control.

As is clear from the above configuration and FIG. 8, etc., in the control device that adjusts the clearance between the derolling rolls (3) and (4) based on the output of the stripping rate sensor (53), before the stripping rate automatic control is started and the stripping rate is controlled. An unripe rice detector (93) that is a comparison means for comparing the outputs of the sensor (53) after the start of automatic control is provided, and an alarm is issued when the difference in the sensor (53) output from the unripe rice detector (93) is less than or equal to a predetermined value Alternatively, a microcomputer (71) that is a controller that outputs a signal of at least one of roll (3) (4) gap control stop
Is provided to judge the mixing of immature rice or glutinous rice based on the detection value of the removal rate sensor (53), and when there is much mixing of immature rice, an alarm or roll (3) (4) gap control stop can be performed. Is configured as follows.

On the other hand, the switches (55) (74) (77) (78) (7) described above in the manual interrupt circuit (71b) provided in the microcomputer (71).
9) and the OK counter switch (92) are connected respectively.

This embodiment is configured as described above, and the control operation will be described below with reference to the flow charts shown in FIGS.

1. When opening and closing the roll gap (C) manually (1) Switch the selector switch (74) to manual.

(2) Close the deployment lever (6) and shutter (5).

(3) Close the manual open / close switch (82).

(4) When the rolls (3) and (4) come into contact with each other and the contact sound is confirmed, the switch (82) is turned off to zero the roll gap adjusting knob (not shown).

(5) Open the manual open / close switch (82) and open the rolls (3) and (4) to the specified gap.

All of these operations are performed based on the operator's judgment.

2. When operating the roll gap (C) by automatic control 2-1 At the start of automatic control (1) The initial gap x ₁ is set by the removal rate setting device (80).

(2) Roll gap when expansion lever (6) is closed and shutter (5)
(C) is set to the reference value x ₁ position.

(3) When the expansion lever (6) is closed and the shutter (5), the timer for setting the set time T ₁ required for starting automatic control starts, and when the overflow sensor (54) is on, the automatic control is enabled.

(4) Re-set the standard of roll gap (C) to the standard removal rate by observing the released state during work and memorize the reference value x.

(5) Turn on the OK switch (79).

(6) After the set time T ₁ , the automatic control starts and the automatic display (89) lights up.

Open excisional to nip the reference position (roll gap reference excisional) (1) Roll (3) (4) of the opening motion and the roll gap (C) only x _3.

(2) The microphone sound level L, which is the noise level at this time, is sensed by the microphone (68) and k times the sound level L is the contact sound level L ₀ (L ₀ = L ×) of the rolls (3) and (4).
Remember as K).

(3) After the set time T _{3, the} rolls (3) and (4) are closed for 1 step.

(4) When the rolls (3) and (4) come into contact with each other and the microphone (68) senses the level L ₀ , the rolls (3) and (4) are set to the reference value x.
Opening by the equivalent of ₁ .

Roll gap reference resetting Automatically controllable When the release rate setting device (80) after display or the manual opening / closing switch (82) is operated, the roll gap (C) is adjusted according to the display, and after adjustment the gap is set as the reference value x. When the memory and OK switch (79) is operated, the control is subsequently performed with the removal rate reference value b corresponding to this reference value x as the reference removal rate. If it is not reset, x = x ₁ .

2-2 Automatic opening / closing control of roll gap (C) (when normal hulling work is performed) (1) Average desorption rate a of sample is larger than unripe rice desorption rate a ₀ When the difference between the withdrawal rate reference value b corresponding to the reference value x and the average withdrawal rate a is smaller than the allowable range from the reference withdrawal rate, that is, the allowable deviation c (a> a ₀ and | a−b
| ≦ c) That is, when the amount of unripe rice (glutinous rice) is small or the deviation from the standard removal rate is below a certain level.

a> b …… Roll (3) (4) is opened n steps a <b …… Roll (3) (4) is closed n steps a = b …… Roll (3) (4) is kept open / closed (2 ) When the roll gap (C) is within the constant adjustment range x ₄ (x ± x ₄ ) with the reference value x as the median value, the measurement of the removal rate a is repeated after the set time T ₂ .

(3) During this period, Δx is corrected with respect to the reference value x corresponding to the roll friction amount every time the set time T ₄ elapses from the start of the time T ₁ . (Change of roll gap reference) (4) When the roll gap (C) exceeds the constant adjustment range x ₄ (x ± x ₄ or more (below)), the automatic control is interrupted and the roll gap alarm I is activated.

(5) Thereafter, the operation of the alarm I is stopped by turning on the OK switch (79), and the roll gap (C) reference is reset and reset.

2-3 Control safety check (1) Micro level check for each cycle during control,
(2) The roll position switch (66) is checked (roll position alarm), (3) The overflow sensor (54) is on-checked, and the removal rate sensor (53) is level checked (hopper clogging alarm).

(1) When the micro level is too large, the roll gap should be x
Open to ₂ .

(2) Roll position alarm When the roll position switch (66) is on, the roll position alarm is activated and the automatic control is interrupted. In this state, the shutter
When the (5) is closed and the OK switch (79) is turned on, the alarm operation stops. Then, after this, the main switch (72) is turned off once and the automatic control is performed again from the preparation.

(3) Hopper clogging alarm Turn off the overflow sensor (54) or remove the rate sensor (5
When the level of 3) is too low, the hopper clogging alarm is activated and the automatic control is interrupted.

In this case, the operation of the alarm is stopped by turning on the OK switch (79), the clogging is removed within the time T ₅ from the turning on of the switch (79), and both the sensors (53) and (54) are returned to their original states. At this time, the roll gap (C) standard is reset and reset.

2-4 Automatic opening / closing control of roll gap (C) (when deviation from standard value is large) (1) Average desorption rate a of sample is larger than unripe rice desorption rate a ₀ When the difference between the withdrawal rate reference value b corresponding to the value x and the average withdrawal rate a is larger than the allowable deviation c from the reference withdrawal rate (a> a ₀ and | a−b |> c), that is, with the reference withdrawal rate. When there is a large amount of misalignment but a small amount of immature rice (glutinous rice) is mixed, the number of times the route has passed consecutively with a> b is m times.
_{Operate 0} and open n-step rolls (3) and (4). At this time, if the opening (C) is within x + x _{4, the} sample loss rate is repeatedly detected after time T ₂ . When x + x ₄ or more, the automatic control is interrupted and the roll gap alarm I
Operate. The paddy alarm I ₀ is automatically canceled when the alarm condition is resolved.

When a> b, the number of times the route has passed continuously interrupts the m-th automatic control and activates the paddy alarm Im. OK switch at this time
When (79) is turned on, the operation of the paddy alarm Im is stopped, and the roll gap
Re-set the criteria in (C) by resetting.

(2) The control is performed according to the above (1) even when a <b.

2-5 Automatic opening / closing control of roll gap (C) (when a large amount of unripe rice is mixed) The average desorption rate a of the sample is smaller than the unripe rice desorption rate a ₀ , and the desorption corresponding to the roll gap reference value x during the current operation is performed. Rate reference value b
When the difference between and is larger than the allowable deviation c from the standard removal rate (a
≤a ₀ and | a-b |> c), that is, when unripe rice (brown rice) is highly mixed (actually, a <b is the most common case, so only this case will be described.) (1) Labeling unripe rice The container (88) lights up.

(2) When the first pass through the route is made, the average escape rate a detected at this time is stored as a ₁ .

(3) When the number of passes through the heart is the second time, the average desorption rate a detected at this time and the previous desorption rate a ₁ are compared by the detector (93). When a> a ₁ , the desorption rate a While repeating the measurement and continuing the work, a ≦ a _1, that is, the loss rate sensor (53)
When the detected value of is not higher than the previous time, it is judged as unripe rice and the automatic control is interrupted and the buzzer (91) is activated.

(4) When the roll gap (C) is within x-x ₄ , the route after time T ₂ is repeated, and when it becomes less than or equal to x-x _{4, the} automatic control is interrupted and the roll gap II is operated. Even in this case, the roll gap alarm II can be stopped with the OK switch (79).
Then, the roll gap (C) standard is reset and reset.

2-6 Peeling work When the gap setting value by the removal rate setting device (80) during the current work is smaller than the polishing setting value x ₀ , it is judged as polishing and the average removal rate a of the sample is corrected by a certain amount of unripe rice. After (setting the value to a value), the same control as the normal porridge work is performed.

That is, when a> a ₀ and | a−b | ≦ C, it is the same as the above 2-2. When a> a ₀ and | a−b |> C, it is the same as the above 2-4. When a ≦ a ₀ , the above 2− The same control as 5 is performed.

It should be noted that the microphone level check is not performed every cycle during the polishing work.

3 When operating the roll gap (C) by manual interruption (see Fig. 9) (1) Before automatic control starts (OK counter switch (92) is off (OK counter switch (92) is OK switch when automatic control starts) It is provided to detect whether or not (79) is pressed. When the OK switch (79) is pressed once, the OK counter switch (92) is kept on, and then the OK switch (79) is turned on. Also, the OK counter switch (92) remains on.

Manual opening and closing is performed by manually switching the selector switch (74).

(2) After automatic control starts (OK counter switch (92) is on)
In case of, open the deployment lever (6). Shutter (5) closed. Manual open / close switch (8
2) Operation. The automatic control is interrupted by any operation of turning on the OK switch (79), and after restarting, the route is started by resetting the roll gap reference. The manual opening / closing switch (82) can be freely operated either in the automatic control or in the latter case (manual priority).

In the flow chart, F ₁ (automatic start flag) is used to determine whether or not a set time T _{1 has} elapsed from the start (0 until elapse, 1 after elapse), and F ₂ (price flag) is set as a removal rate setting. It is judged whether or not the set gap by the container is the piling gap set value x ₀ or less (1 when x ₀ or less, ₀ when x ₀ is exceeded), and K (immature rice flag) is a ≤ a ₀ Route 1
It is used to determine whether or not the circuit has passed (0 not passed, 1 after passing).

In addition, the alarm operates as follows.

(1) Open the deployment lever (6) before automatic start. When the shutter (5) is open, the buzzer (91) is continuously operated. (2) Paddy alarm I ₀ … High rate lamp (84) lights up (3) Paddy alarm Im… High rate lamp (84) blinks. Buzzer (91) Intermittent (4) Paddy alarm II ₀ … Low rate lamp (85) lights up (5) Paddy alarm IIm… Low rate lamp (85) blinks. Buzzer (91) Intermittent (6) Roll gap alarm I. II… Proper lamp (83) blinks, buzzer (91) intermittent (7) Hopper clogging alarm… Each lamp (83) (84) (85) blinks and buzzer (91) intermittent (8) Roll position alarm… buzzer (91) Further, the average removal rate a is the average value (a = Z / Y) of the detection value sum Z detected by the removal rate sensor (53) Y times in a predetermined time period, that is, every fixed time. The manual interruption is also possible between the pulses within the time.

Incidentally, in the above-mentioned embodiment, a> a in the detector (93).
It is configured to perform a comparison of _{1, a> a 1 + α} (a-a 1
> Α) That is, the difference between the output of the sensor (53) before and after the control is compared with a predetermined value or less, and when the difference is less than the predetermined value, the buzzer (91) is operated and the control is interrupted as described above. good.

In addition to the one for directly detecting the rate of demixing of the mixed rice as in the embodiment, the desorption rate sensor (53) may be a method for detecting the driving load of the motor for driving the rolls (3) and (4) by the current value or the like. good.

Further, the comparison of the output difference of the sensor (53) is not limited to the detection of unripe rice, but may be incorporated in a normal control circuit to confirm the control operation.

"Effects of the Invention" As is apparent from the above embodiments, the present invention is directed to
In the control device that adjusts the clearance between the rolls (3) and (4) based on the output of (53), the comparison means (93) that compares the output of the sensor (53) before the start of the automatic removal rate control and after the start of the automatic removal rate control ) Is provided, the sensor (53) in the comparison means (93) is provided with a controller (71) for outputting at least one signal of an alarm or roll gap control stop when the output difference is less than or equal to a predetermined value, It is possible to accurately detect unripe rice or glutinous rice by the detection value of the removal rate sensor (53) without separately establishing the boundary value that is the criterion for judging unripe rice or glutinous rice. It is possible to easily prevent the automatic removal rate control from malfunctioning, and reduce the gap (C) between the derolling rolls (3) and (4) more than necessary by mixing unripe rice etc. It is possible to eliminate the drawbacks and easily improve the safety of the removal rate automatic control and the removal function. It is something.

[Brief description of drawings]

FIG. 1 is a de-control circuit diagram showing essential parts, FIG. 2 is an overall external view, FIG. 3 is a sectional view of the same, and FIG.
FIGS. 6 to 6 are explanatory views of the removal rate sensor section, FIG. 7 is an explanatory view of the hulling section, and FIGS. 8 to 9 are flowcharts of FIG. (3) (4)… Roll removal (53)… Desorption rate measuring sensor (desorption rate sensor) (91)… Alarm member (buzzer) (93)… Comparison means (immature rice detector) (C)… Gap

Claims (1)

[Claims] Comparison of comparing the output of the sensor (53) before and after starting the automatic removal rate control in the controller that adjusts the clearance between the removal rolls (3) and (4) based on the output of the removal rate sensor (53) A controller (7) provided with means (93) for outputting at least one of an alarm and a roll gap control stop signal when the output difference of the sensor (53) in the comparison means (93) is less than or equal to a predetermined value.
Dehulling control device for a huller, which is characterized in that (1) is provided.