JPS614540A - Dehulling control device for rice huller - Google Patents

Abstract

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

Description

Detailed Description of the Invention "Industrial Application Field" The present invention is a dehulling machine that has a built-in pair of dehulling rolls and dehulls supplied paddy into brown rice using the dehulling rolls. This relates to a branch control device.

``Prior art'' The method includes a dehulling rate sensor that detects the dehulling rate of mixed rice of brown rice and paddy floated by dehulling rolls, and a roll gap adjustment mechanism that variably adjusts the gap between the rolls. There is a means for controlling the gap between the wall removal rolls fAfriL and the wall removal rate at a constant value based on the detected value of the sensor.

``Problems to be solved by the invention'' However, mixed rice often contains immature rice, coarse grains, or paddy with different moisture content, and if control is performed based on these, the control may run out of control or/ Conventionally, the operation during control was extremely unstable, such as by pinching or becoming disabled. In addition, if control is performed by detecting immature rice or coarse grains, there is a problem in that the regular mixed rice will often have loose rice or broken rice.

"Means for Solving the Problem" Accordingly, the present invention provides a system for at least one of activating an alarm and stopping automatic control when the detected value of the demolition rate sensor exceeds a predetermined range. It is composed of

According to the present invention, when the control becomes unstable due to the mixing of immature rice, coarse grain, or paddy with different moisture content other than the regular mixed rice, the above-mentioned cell/su By detecting this and dealing with it, it is possible to always carry out stable and accurate deburring work, and it is also possible to immediately resume control in the event of a temporary sudden change.

``Example'' An example of the present invention will be described in detail below based on the drawings. 1st
The figure is an overall sectional view of the rice huller showing the main parts, and FIG. 2 is an overall external view of the same. In the figure, (1) is the huller, (2) is the hopper into which the paddy is thrown, (3) and (4) are the hopper (2).
) A pair of floating rolls placed opposite each other at the bottom.

(6) is a deployment lever for manually opening each of the rolls (3) and (4) in an emergency manner;
4) It is a step drive type de-wall motor which is a de-entrainment rate adjusting motor that adjusts the gap.

In the figure, (8) is a winnowing section on which the hulling section (1) is placed, and it removes small rice from the brown rice falling into the brown rice take-out gutter (8), the brown rice conveyor (10), and the gutter (9). Karakin (IL)
) and the rice removal gutter (12) that carries the rice out of the machine.
and receives the rice (brown rice and paddy) that has been scraped off by facing downwards from the dehulling rolls (3) and (4) through the grain scattering plate (14) and grain flow plate (15). A gutter (16) and a rice conveyor (17) for removing rice, a gutter (18) and a conveyor (I9) for receiving rice husks separated from the rice husks separated from the rice husks separated from the rice husks. and a dust suction/exhaust fan (20) for discharging dust to the outside of the machine.

In the figure, (21) shows the hulling section (1) placed on the wind sorting section (8).
) This is a sorting section installed in parallel to the rice cracker, and as shown in Fig. 3, there are upper and lower sorting tubes (22) and (23) that continuously rotate in one direction to separate brown rice and paddy, and each of the above-mentioned sections ( 2
2) Support rolls (24), (25), and the upper sorting tube (22) that rotatably support (23), respectively.
A mixed rice supply tank (26) provided outside one end, a supply conveyor (27) and a re-sorting grain conveyor (28), a brown rice amount conveyor (29), and a lower sorting tube (23) inserted into the upper sorting tube (22). ) to interpolate the amount of brown rice conveyor (30
), a rice sorter (31) installed between the upper and lower brown rice quantity conveyors (29) and (30) and connected in series, and a chute that communicates the paddy discharge end of the upper sorting tube (22) with the hopper (2). (32), a chute (33) that connects the re-sorting grain conveyor (2B) to the lower sorting tube (23), and a mixed rice discharge end of the lower sorting tube (23) that slides down and communicates with the rice removal gutter (1B). (34) and 7 (3) to the amount of brown rice.
0) to the brown rice removal gutter (9).
).

and a brown rice lifting conveyor (36) whose lower end side communicates with the brown rice conveyor (10);
Sorting rice lifting conveyor (37) whose lower end side communicates with I7)
) are set up along the outside of the machine, and the upper end of the sorting rice lifting conveyor (37) is communicated with the supply tank (26) through a connecting pipe (38), and the hulling section (
The upper end of the bypass pipe (39), which is a bypass path that separates the scraped rice from step 1) and the returned mixed rice from the sorting section (21), into the sorting section (21), is connected to the connecting pipe (3 days).
The bypass pipe (3) is connected to the joint (40) between the brown rice conveyor (17) and the lifting conveyor (37).
8) Connect the lower ends and install the bypass pipe (39) along the outside of the machine in the same way as each conveyor (38) (37).

Figures 4 and 5 are enlarged sectional views of the bypass pipe (3B), and the container (41) which is a hopper for measuring the weight of the flow.
is installed inside the bypass pipe (38), and overflow gutter (42) (42) is integrally configured on both sides of the container (41),
The container (41) is always kept filled with mixed rice, and the excess mixed rice is transferred to the flow gutter (42).
41) While leaking from the upper edge, the container (41)
A grain outlet (43) is provided at the center of the lower part of the container, and the grain outlet port (43) is formed so that a certain amount of mixed rice is continuously dropped.

Also, a sensing shirt (45) is connected to the bypass pipe (39) below the container (41) via a bracket (44).
) is rotatably supported, and a sensor arm (46) has one end fixed in the middle of the shaft (45), and a receiving plate (47) is attached to the other end of the sensor arm (46).
) is fixed, and the receiving plate (4
7) is supported so as to be able to rise and fall freely, and the receiving plate (47)
is tilted in a left-right direction that is approximately perpendicular to this vertical swinging force direction,
A receiving plate (47) is positioned substantially directly below the outlet (43).

The sensing shaft (45) is connected to the potentiometer (49) fixedly supported by the bladder (48).
) are interlocked and connected, and the sensor arm (
Weight arm (50) installed horizontally in the opposite direction to
), as well as a weight arm (51) that hangs vertically downward.
) are respectively fixed to the end 1 of the sensing shaft (45). Further, a weight (52), which is a balance member that provides a counterbalancing force in the opposite direction to the force acting on the receiving plate (47), is attached to at least one of each weight arm (50) and (51),
A receiving plate (47) receives the mixed rice falling from the outlet (43).
the receiving plate (47) and the potentiometer l.
Each member including the meter (49) forms a demolition rate sensor (53), and the sensor arm (46) is detected based on the relative change in the weight of the mixed rice and the weight (52).
) and a sensing shaft (45) are rotated to detect the weight of the mixed rice falling from the outlet (43) via a potentiometer (49). Furthermore, an overflow sensor (54) is installed outside the container (41), and when the container (41) is filled with a certain amount of mixed rice and is in an overflow state, this is detected by turning on the switch (55). It is configured to do so.

As shown in FIG. 6, the demolition rolls (3) and (4) are interlocked and connected via transmission gears (5B), (57), (58), and (59), and the sub-demolition roll (4) is connected to a gap adjustment link. (eo).

A slider (fil), a gap adjustment shaft (62), and gears (e3) (64) are connected to the demolition motor (7), and the demolition roll ( 3') The hulling gap (C) of (4) is provided so as to be controlled to open and close as appropriate. Also, the above-mentioned shirt) ([12)
A slider (65) is screwed onto the threaded portion (62a) at the other end, and a roll position switch operated by the slider (65) sets the maximum roll opening limit switch (66) to the machine frame (67). When the rolls (3) and (4) are opened to the maximum extent by driving the motor (7), the switch (66) is provided to detect this. Further, the rolls (3) (4)
) and roll transmission gear (5B) (57) (58) (59
) is included in the removal case (67), which has a built-in removal roll (3).
(4) is equipped with a microphone (68) which is a microphone sensor that detects changes in the drive sound when the demolition roll (3) (4) rotates. 57) (58) (59)
detect the meshing sound with a microphone (68),
The zero state of this hulling gap (C) was measured using a microphone (6th day).
configured to detect via.

Furthermore, as shown in No. 3124, there is a sorting amount sensor (70) in the upper sorting tube (22) that detects a change in the sorting amount, which is the amount of mixed rice supplied to this tube (22), using a potentiometer (69). ).

FIG. 7 is a control circuit diagram of the demolition motor (7), in which a demolition control circuit (71a) configured by a microcomputer (71) is connected to a power supply (
73) and connects the changeover switch (74) for switching between automatic and manual adjustment to the control circuit (71a), and connects the potentiometer (49) of the buoyancy rate sensor (53) to the detected value adjustment circuit (75). is connected to the control circuit (71a) via the potentiometer (49).
The adjustment circuit (75) adjusts the detected value on the production line.
).

Also, the gear (5B) (
57) The microphone (68) for detecting the drive sound of (58) and (59) is connected to the control circuit (?1a) via a bandpass filter (76), and the shutter (5) at the bottom of the hopper (2) ) and a shutter switch (77) that detects when the roll ( ) is opened.
3) The roll position switch (66) that detects the maximum opening operation of (4), and the deployment lever operation detection switch that detects the emergency opening of the de-wall rolls (3) and (4) due to the operation of the deployment lever (6). (78), and the demolition rate sensor (53).
) and an OK switch (79), which is a control operation switch for controlling the removal and automatic start/cancellation, are connected to the control circuit (71a).

Furthermore, a sorting amount sensor (70) that detects the amount of mixed rice in the sorting cylinder (22), and a de-hulling weight setting device (1) that adjusts the gap (G) between the de-hulling rolls (3) (4) by operating a dial.
80) to the control circuit (71a), and connect the demolition motor (7) to the drive circuit (81),
Further, a manual opening/closing switch (82) giving priority to manual operation for manually opening and closing the deburring rolls (3) and (4) is connected to the control circuit (?la), respectively.

Furthermore, the lamps (83), (84), and (85), which are alarms for notifying the appropriateness, high rate, or low rate of the demolition rate detected by the demolition rate sensor (53), are connected to the demolition rate display circuit (86). ) and also through the sorting amount sensor (70
) is a monitor that displays the sorting amount detected by the control circuit (7) in a pergraph format.
1a), and connect the immature grain indicator (8
8), an automatic display (89), a manual display (90), and a buzzer (91) serving as an alarm are respectively connected to the control circuit (71a).

First, each of the switches (55) (
74), (77), (78), and (79) are connected to the OK counter switch (92), respectively.

The present embodiment is constructed as described above, and its control operation will be explained below with reference to the flowcharts shown in FIGS. 8 to 19.

l. When manually opening and closing the roll gap (G) (see Figures 8 and 10) (1) Switch the changeover switch (74) to manual mode.

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

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

(4) When the rolls (3) and (4) are in contact and the contact sound is confirmed, turn off the switch (82) and zero the roll gap adjustment knob (not shown).

(5) Open the manual opening/closing switch (82) to open the sunken rolls (3) and (4) at predetermined intervals.

All of the above operations are performed at the discretion of the operator.

2. When operating the roll gap (c) by automatic control 2-1 At the start of automatic control (see Figure 8)
+(1) Initial gap X is set using the wall removal weight setting device (8o).

(2) When the deployment lever (6) is closed and the shutter (5) is closed, set the roll gap (C) to the reference value X8 position.

(3) When the deployment lever (6) is closed and the shutter (5) is open, set the set time T required to start automatic control.When the tire operation starts and the overflow sensor (54) is on, automatic control is possible. Become.

(4) Look at the state of demolition during work, reset the standard of the roll gap (C) to the standard demolition rate, and memorize the standard value X.

(5) Turn on OK switch (78).

(6) After the set time T1 has elapsed, automatic control starts and the automatic display (89) lights up.

・1゛・ Set to the roll gap reference position (see Figure 11) (1) Open the o-ru (3) and (4) to set the roll gap (C).
Open only x3.

(2) The microphone level L, which is the noise level at this time, is sensed by the microphone (68), and this level L is detected by the microphone (68).
(3) (4) Contact sound level L. (L
o=LXk).

(3) After the set time T3 has elapsed, rolls (3) and (4) are closed again in steps.

(4) The rolls (3) and (4) are in contact and the microphone (68) is at level L. Roll (3) (4) when detected.
) is opened by an amount equivalent to the set standard value X1.

・、? No. Resetting the roll gap standard (see Figure 12)
When the automatic controllable and easy-to-display demolition rate setting device (80) or manual opening/closing switch (82) is operated, the roll gap (C) is adjusted according to the instruction, and after adjustment, the gap is memorized as a reference value X. When the OK switch (79) is operated, the removal rate sensor corresponding to this reference value
will be held. If it is not reset, X=X.

2-2 Automatic opening/closing control of the roll gap (C) (when normal hulling work is being performed) (Fig. 8).

(See Figures 9 and 15 to 19) (1) The average dehulling rate a of the sample is the unhulling rate a of immature rice.

When the difference between the standard value of demolition rate a corresponding to the standard value of the roll gap during the current operation and the average demolition rate a is smaller than the allowable width, that is, the tolerance deviation C from the standard demolition rate (a >ao and 1a-bl≦C) That is, when the contamination of immature rice (coarse rice) is small and the deviation from the standard dehulling rate is below a certain level.

a>b...Roll (3) (4) is opened in n steps a<b...Roll (3) (4) is closed in n steps a=b...Roll (3) Maintaining the opening/closing stop of (4) (2) When the roll gap (C) is within the constant adjustment range x4 (X±X, within) with the reference value X as the median value, the set time T2
After that, the above-mentioned measurement of the removal rate a is repeated.

(3) During this time, the set time T is set from the start of the time T1.

The fixed value ΔX with respect to the reference value X is corrected in accordance with the amount of roll wear each time.

(4) When the roll gap (C) exceeds the fixed adjustment range x4 (X thX, or more (or less)), the automatic control is interrupted and the roll gap alarm I is activated.

(5) After that, turn on the OK switch (78) to stop the operation of alarm I and start over by resetting the roll gap (C) standard.

2-3 Control safety check (see Figure 8) During control 1
Every cycle: (1) Check the microphone level, (2) Check the roll position switch (66) (roll position IF
(3) On-check of the overflow sensor (54) and level check of the demolition rate sensor (53) (
hopper clogging alarm) will be issued.

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

(2) Roll position alarm (see Figure 14) When the roll position switch (66) is on, the roll position alarm is activated and automatic control is interrupted. In this state, when the shutter (5) is closed and the OK switch (78) is turned on, the alarm operation is stopped. After this, turn off the main switch (72) by -μ and restart the automatic control from the preparation.
□Heat (3) Hopper clogging alarm (see Fig. 19) When the overflow sensor (54) is off or the level of the removal rate sensor (53) is too low, the hopper clogging alarm is activated and the automatic control is interrupted.

In this case, the activation of the alarm is stopped by turning on the OK switch (79), and the time T starts from turning on the switch (78).
When the blockage is removed from the rollers 53 and 54 and both sensors (53) and (54) return to their original states, the reference for the roll gap (C) is reset and the process is restarted.

2-4 Automatic opening/closing control of the roll gap CG (when the deviation from the reference value is large) (Figures 8 and 9).

(See Figures 15 to 18) (1) The average dehulling rate a of the sample is the unhulling rate a of immature rice.

When the difference between the standard value of demolition rate a corresponding to the standard value of the roll gap during the current operation and the average demolition rate a is larger than the allowable deviation C from the standard demolition rate (a>ao and 1a-bl>c
) In other words, although the deviation from the standard dehulling rate is large, it is still immature rice (poor).
When the amount of contamination was small, the time when the route was continued with a > b caused m1 paddy alarm ■. and n-step rolls (3) (4)
Open. At this time, if the gap (C) is within X+X, the sample removal rate is repeatedly detected after time T2. Also x
+X4 or more, the automatic control is interrupted and the roll gap alarm I is activated. In addition, paddy alarm worker. will be automatically released when the alarm condition is removed.

The mouth that was routed when a>b interrupts the automatic control for the mth time and activates the paddy alarm In.

At this time, turn on the 0.K switch (78) to stop the operation of the paddy alarm Im, and then reset the standard for the roll gap (C) and start over.

(2) Control similar to the above (1) is performed also when a<b.

? -5 Automatic opening/closing control of roll gap <C) (in case of large amount of immature rice mixed in) (see Figures 8, 9, and 15 to 18) a.

When the difference between the roll gap standard value X during the current operation and the corresponding demolition rate standard value is greater than the allowable deviation C from the standard demolition rate (a≦ao and ja-bl, >c ), that is, immature rice (when there is a large amount of coarse grain mixed in (actually, in most cases, a < b, so we will only explain this case.) (1)
The immature rice indicator (88) lights up.

(2) When the number of times the route has been passed continuously is less than U times, activate the paddy alarm IIm and proceed to the next step without closing the rolls (3) and (4).

(3) After the uth time, operate the paddy alarm 11m, close the rolls (3) and (4) in n steps, and leave the gap (
If C) is within x-x, the route is repeated after time T2 and when it is less than x-x, the automatic control is interrupted and the roll gap alarm (2) is activated. That is, a≦
In the case of aQ, from the Uth consecutive time onward, the rolls (3) and (4) move closed until X - X is reached. In this case as well, the roll gap alarm n can be stopped by turning the OK switch (78) on.
”° row °゛・°−” gap (
Redo the criteria for C) from 1.I.

2-6 Coarse layer work (Fig. 8, Fig. 9, Fig. 16).

(Refer to Fig. 18) The gap setting value by the wall removal weight setting device (80) during the current operation is the coarse layer setting value X. When it is smaller, it is determined that it is husking, and the average removal rate a of the sample is corrected for immature rice by a certain amount (to make the a value loose), and then the same control as normal hulling work is performed.

In other words, when a > ao and 1a-bl≦C, the same as 2-2 above, a > ao, and when 1a-bl>c, 2-4 above.
Similarly, when a≦ao, the same control as in 2-5 above is performed.

Note that the microphone level is not checked every cycle during the printing process.

3. Manipulate the roll gap (C) by manual interrupt.
(See Figure 9) (1) Before starting automatic control (OK counter switch (82)
When off (OK counter switch (92) is turned off at the start of automatic control)
This is provided to detect whether or not the K switch (79) is pressed. When the OK switch (79) is pressed once, the OK counter switch (92) is kept on and then the OK switch (78) is turned on. OK counter switch (
82) is turned off. ) Manual opening/closing is performed by manually switching the changeover switch (74).

(2) After starting automatic control (OK counter switch (92)
On), the automatic control will be interrupted by either opening the deployment lever (6) or closing the shutter (5) by operating the manual open/close switch (82) or turning on the OK switch (79), and after restarting, the roll gap reference will be restarted. The route starts from the set. The manual opening/closing switch (82) is automatically controlled or can be operated freely in either case (manual priority is given).

In addition, in the flowchart, Fl (automatic start flag)
means to determine whether or not the set time T8 has elapsed since the start (
0 until elapsed, l after elapse), F2 (coarse layer refrag) means that the gap set by the de-wall weight setting device is the current coarse layer gap setting value
Determine whether it is less than or equal to (XO or less: 1, x.

O) Used when exceeding .

Additionally, the alarm operates as follows.

(1) Deployment lever (6) open before automatic start, shutter (5)
) Continuous operation of the buzzer (91) when open (2) Paddy alarm I. ... High rate lamp (84) lighting (3) Paddy alarm Im
... High rate lamp (84) flashing, buzzer (91) intermittent (4) paddy alarm ■. ... -Low rate senpu (85) lights up (
5) Paddy alarm IIm...Low rate lamp (85) blinking, buzzer (ill) intermittent (6) Roll gap alarm I, II... Appropriate lamp (83) blinking, buzzer (81) intermittent (7) Hopper clogged Alarm...Each lamp (83) (8
4) (85) Flashing and buzzer (81) Intermittent (8) Roll position alarm... Buzzer (91) Continuous Furthermore, the average demolition rate a is determined by the demolition rate sensor (53) at a predetermined time interval of 7. The average value (a=Z/Y) of the total sum Z of detection values detected in pulses is used, and manual interruption is also possible between pulses within this predetermined time.

"Effects of the Invention" As is clear from the above embodiments, the present invention includes a dehulling rate sensor (53) that detects the dehulling rate of mixed rice dehulled by the dehulling rolls (3) and (4). , a structure in which the gap (G) between the wall removal rolls (3) and (4) is adjusted based on the detected value of the sensor (53) to control the wall removal rate at a constant level,
It is configured to activate at least one of the alarms (83) and (91) or stop the automatic control when the detected value of the demolition rate sensor (53) exceeds a predetermined range. Therefore, even if a large amount of immature rice, husks, or paddy with different moisture contents are mixed into the regular mixed rice, inconveniences such as control running out of control, nitching, or becoming inoperable can be prevented. It has remarkable effects, such as effectively preventing the occurrence of loose rice and broken rice, and making it possible to always accurately and stably control the dehulling rate.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of the entire main part showing an example of wood 4cl), Fig. 2 is an external view of the same, Fig. 3 is an enlarged cross-sectional view of the main part, Fig. 4
5 to 5 are explanatory diagrams of the dehulling rate sensor section, FIG. 6 is an explanatory diagram of the hulling section, FIG. 7 is a dehulling control circuit diagram, and FIGS. 8 to 19 are the previous flowcharts. . (3) (4)... De-floating roll (
53) ... Demolition rate sensor (83) ... Alarm (lamp) (θ1
)... Alarm (buzzer) Applicant: Yanmar Agricultural Machinery Co., Ltd. Agent: Tadashi Fujiwara No. 3
mouth? ? Figure 6 Figure 4 Figure 5 Day Rabbit 9 Prisoner No. rr Prisoner L? Concave 15 Tip of the mouth Chapter 140 ls Calendar of the island, Noro shi0 Leap station,
17 ffi No. I8 Kuni Fu 1
9 Written amendment of unsatisfactory procedure (voluntary) August 3, 1980 Manabu Shiga, Director General of the Patent Office 1, Indication of the case I1 1981 Patent Application No. 126
603 No. 2, Name of the invention: De-weighing control device for a rice huller 3, Relation to the amended case Applicant Representative Atsuo Yamaoka 4, Agent Showa Year - Month Date Detailed description of the invention in the specification Column 7, Contents of the Amendment In the description of the amendment, make the following corrections: ``Next is the OK switch.'' on page 21, line 6 to line 8 of the same page. ``Next, it is OK to turn on the OK switch '791 i, as well as the OK counter switch (921 turns on t-i.'')

Claims (2)

[Claims] (1) Equipped with a removal rate sensor that detects the removal rate of the mixed rice removed by the removal roll, and controls the removal rate at a constant level by adjusting the gap between the removal rolls based on the detected value of the sensor. The structure is characterized in that, when the detected value of the defection rate sensor exceeds a predetermined range, at least one of the following is activated: an alarm is activated or automatic control is stopped. Control device for dehulling machine. (2) Equipped with a removal rate sensor that detects the removal rate of the mixed rice removed by the removal roll, and controls the removal rate at a constant level by adjusting the gap between the removal rolls based on the detected value of the sensor. In the paddy rice structure, the automatic control is stopped when the detected value of the removal rate sensor exceeds a predetermined range, and the state at the time of stopping is maintained. Sliding machine removal control device.