JPS61120644A - 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 relates to a dehulling control device for a rice huller that separates and takes out rice into brown rice and rice husks using a pair of dehulling rolls.

"Prior Art" Conventionally, as shown in Japanese Patent Application Laid-Open No. 57-84751, a dehulling rate adjusting member for adjusting the hulling gap between a pair of dehulling rolls is provided, and a detected value of the dehulling rate of the dehulling rolls is provided. There is a technology that automatically controls the hulling gap based on the following.

``Problems to be Solved by the Invention'' In the above-mentioned conventional technology, when a large amount of grain is suddenly introduced, the hulling gap of the dehulling roll is controlled to close abnormally, resulting in the occurrence of misaligned rice, etc. When a large amount of brown rice temporarily mixes into the paddy returned from the sorting section, or when the amount of paddy supplied to the dehulling rolls suddenly decreases, the hulling gap of the dehulling rolls is controlled to open abnormally, and the unhulling There was a problem in that the rate was suddenly reduced and the rate of de-culling was unstable.

Therefore, a technique (Japanese Unexamined Patent Publication No. 59-181914
However, if the detected value of the demolition rate deviates from the predetermined range even slightly, the control will be canceled and the automatic demolition rate control operation will have to be restarted from the initial setting, and the detected value of the demolition rate will be Even within a predetermined range, if continuous control is used, there is a problem in that the demolding rate control of the demolding non-adjustable member tends to go outside the predetermined range due to a delay in response speed.

"Means for Solving the Problem" However, the present invention uses continuous control when the detected value of demolition rate changes significantly compared to the set value of demolition rate, and uses intermittent control when it changes by a small amount. It is configured to control the operation of the deburring non-adjustment member.

``Function'' Therefore, the hulling gap control operation can be made to follow the actual dehulling rate change of the dehulling roll well, and when the difference between the dehulling rate set value and the dehulling rate detected value is large, the dehulling rate is changed. In addition, when the difference between the set value and the detected value is small, the demolition rate can be corrected slowly, and more agile and stable demolition rate control can be obtained than in the past.

It is also possible to easily simplify the handling and make it a dairy product.

"Example" Embodiments of the present invention will be described in detail below based on the drawings.

FIG. 1 is a diagram of a control circuit for removing rice hullers, FIG. 2 is an overall view of the rice huller, and FIG. 3 is a sectional view thereof. 0) in the figure is the hulling part, and (2
) is a supply hopper into which paddy is input; (3) and (4) are a pair of dehulling rolls installed opposite to each other at the bottom of the hopper (2); (5) is a shutter that opens and closes the bottom of the hopper (2); (g) is a deployment lever that manually opens each of the rolls (3) and (4) in an emergency manner, and (7) is a removal ratio motor that is a removal iW1 member that adjusts the approach and separation of the mouth corners (3) and (4). .

In the figure, (8) is a winnowing section on which the hulling section (1) is placed, and includes a brown rice take-out gutter (8) and a brown rice conveyor (10).

Karawine (1) removes small rice from the brown rice that falls into the gutter (8).
1) and a rice removal gutter (12) that carries the rice out of the machine.
) and the rice conveyor (13), the grain scattering plate (14) and the grain flow plate (15), and the de-mulling roll (3) (4
) A surioshi rice take-out gutter (16) facing downward to receive the surioshi rice (brown rice and paddy) and a surioshi rice conveyor (17);
A paper takeout gutter (18
) and a stub conveyor (18), and a dust suction/discharge fan (20) for discharging the rice husks separated from the scraped rice to the outside of the machine.

In the figure, (21) shows the hulling section (1) placed on the wind sorting section (8).
), and as shown in Fig. 4, there are upper and lower sorting cylinders (22) (23) that rotate continuously in one direction to separate brown rice and paddy, and the container cylinder (22). (23)
Support rolls (20...(
25) ..., a mixed rice supply tank (26) provided outside one end of the upper sorting tube (22), a supply conveyor (27) and a re-sorting grain conveyor (2) inserted into the upper sorting tube (22).
B), brown rice receiving conveyor (29), and lower sorting tube (23)
), a rice sorting machine (31) installed between the upper and lower brown rice receiving conveyors (23) and (30) and connected in series, and a rice sorting machine (31) installed in the upper sorting tube (22) for discharging paddy from the upper sorting tube (22). a shoe (32) whose end communicates with the hopper (2);
A chute (33) that connects the re-sorting grain conveyor (28) to the lower sorting tube (23), and a shoe 1- (34) that slides down the mixed rice discharge end of the lower sorting tube (23) and connects it to the rice removal gutter (1B). ) and a shoe (35) that connects the brown rice receiving conveyor (30) to the brown rice take-out gutter (9).

And a brown rice lifting conveyor (38) whose lower end side communicates with the brown rice conveyor (lO), and a brown rice lifting conveyor (38) that communicates with the brown rice conveyor (lO),
Sorting rice lifting conveyor (37) whose lower end side communicates with 17)
) is set upright along the outside of the machine, and the upper end of the sorting rice lifting conveyor (37) is communicated with the supply tank (2B) through a connecting pipe (38).
The upper end of the bypass pipe (38), which is a bypass path that separates the scraped rice from 1) and the returned mixed rice from the sorting section (21), to the sorting section (21), is connected to the connecting pipe (3 days).
Also, the lower end of the bypass pipe (3θ) is connected to the brown rice conveyor (17) and the joint hopper (4o) with the lifting conveyor (37), and each conveyor (3B) (3
As in 7), install the bypass pipe (39) along the outside of the machine.

FIG. 5 to FIG. 7 are enlarged sectional views of the bypass pipe (38), and the flow weight measurement container (41) is connected to the bypass pipe (38).
38), and an overflow gutter (42) (42) is integrally formed on both sides of the container (41).
) is always kept filled with mixed rice, and excess mixed rice leaks into the overflow gutter (42) from the upper edge of the container (41), and a grain outlet is provided at the center of the lower part of the container (41). (43), which is configured to allow a certain amount of mixed rice to fall continuously.

Also, a sensing shaft (45) is connected to the bypass pipe (38) below the container (41) via a bracket/44.
) is rotatably supported on the shaft, and the sensor arm (45) has one end fixed in the middle, and a receiving plate (4) is attached to the other end.
7) is fixed, and the receiving plate (47) is supported movably up and down using the shirt (45) as a fulcrum, and the receiving plate (47) is fixed.
7) is inclined in the left-right direction substantially perpendicular to the vertical direction, and the receiving plate (47) is positioned substantially directly below the outlet (43).

One end of the sensing shaft (45) is interlocked and connected to a demolition rate sensor (48) such as a potentiometer fixedly supported by a bracket (48), and a weight arm ( 50), and the weight arm (5I) hanging vertically downward (sensing shirt) (45
) Attach each end to each end. In addition, a weight (52), which is a balance member that provides a balancing force in the opposite direction to the force acting on the receiving plate (47), is attached to each weight arm (50)♂ (51
), the mixed rice falling from the outlet (43) is brought into contact with the receiving plate (47), and the sensor 7 -mu (48) and sensing shirt) (45
) is rotated, and the falling weight of the mixed rice falling from the outlet (43) is detected via a dehulling rate sensor (49).

As shown in FIG. 8, the dehulling rolls (3) and (4), which are respectively supported on the support shafts (53) and (54), are installed internally facing the hulling case (55). ) (54) to pivotally support the transmission gears (58) and (57), and a gear case (58) is provided from the hulling case (55), and the gear (54)
8) Install (57) inside the case (58). Further, drive gears (81) (82) are pivotally supported in the case (58) via power shafts (59) (H), and each gear (5B)
(81), (57) and (82) are always meshed, and the spindle (54) of one of the demolition rolls (4) is pivotally supported in the middle of the gap 7JltM link (63), and one end of the link (83) is supported coaxially with one of the power shafts (60). And the gear (64
) (85), the gap adjusting shaft 7 )
(Equipped with a bearing member (8+) at the other end of the link (B3)
67) through the shirt) (8B) Threaded part at one end (
esa) are screwed together, and the hulling gap'('88) of the dehulling rolls (3) and (4) is enlarged and reduced by the dehulling motor (7), and a manual handle ('88) is attached to the shirt) (H). eeb), and the hulling gap (88) is manually changed by manual rotation of the handle (88b), while a maximum opening limit switch (68) is provided which is switched by the bearing member (87), and the motor ( 7) of the gap adjustment link (B3) in the maximum opening direction is detected by the switch (88).

Further, as shown in FIG. 1, a setting volume (71) having a demolition rate dial (70) for setting a standard demolition rate is provided, and the demolition rate sensor (48) and its setting volume (71) are provided.
1) Judging the output difference, the outputs of low school removal rate, appropriate school removal rate, and high school removal rate are output in stages in multiple stages.
) and a linear driver (73), and light emitting diodes (74) (75) that emit light based on the high, appropriate, and low demolition rate outputs of the driver (73) to indicate the demolition status. (7B), and also includes opening and closing relays (77) and (78) that are excited and actuated by the high and low demolition rate outputs of the driver (73), and a relay switch for each of the relays (77) and (78). (77a
) (78a) and a limit switch (6θ) to apply this power to the demolition rate motor (7), and adjust the motor (7) based on the high and low demolition rate outputs of the driver (73). The structure is such that the hulling gap (68) between the hull removal rolls (3) and (4) can be adjusted to be enlarged or reduced by reversing the rice grains.

In addition, the setting volume (71) and the demolition rate sensor (4)
9) is input connected to the differential amplifier (79), and when the output of the removal rate detection value of the sensor (49) changes significantly compared to the output of the removal rate setting value of the volume (71). a continuous control comparator (80) producing an output and comparing said senna (48) with said volume (71) output;
an intermittent control comparator (81) that produces an output when the output changes by a small range, and an extremely high wall removal rate output or an extremely low wall removal rate output from the linear driver (73) based on the output of the continuous control comparator (80). Output the rate output from continuous regulation anime game) (82) (83),
While each of the relays (77) and (78) is continuously excited, a pulse oscillator (84) is operated based on the output of the intermittent control comparator (81), and the linear driver (73) is activated by the intermittent (pulse) output of the oscillator (84). ) to output a slightly higher demolition rate output or a slightly lower demolition rate output from the intermittent regulation anime (85) (813), and intermittently (pulse) excite each of the relays (77) and (78). It consists of

In addition, a time regulation and gate (87) (
as), each AND gate (87) (88) is kept turned on based on the output of the continuous control comparator (80), and each relay (77) (
7 days) is operated continuously, while a time waiting timer (73) outputs the output time and output waiting time of the driver (73).
88) and an off-time adjustment circuit (90) that changes the output waiting time of the timer (83) in proportion to the output of the differential amplifier (78), The adjustment circuit (30) and the timer (89) are operated based on the output of the timer (89), and the anime games (87) and (88) are controlled on/off based on the output of the driver (73). 77)
(78) is activated at regular intervals, and the sensor (4) is activated at regular intervals.
8) Due to the large change in output, the adjustment circuit (9
0), the output waiting time (off time) of the timer (89) is lengthened to prevent the 7-nching operation of the relay (77) (7B).

Next, an output regulating gate (91) (92) is provided for regulating the output of the linear driver (73) from the linear driver (73) to the opening and closing relays (77) and (78) (91) and (92), and the hopper (2) The shutter switch (9) detects this when the lower shutter (5) is opened.
3), and a hulling interruption switch (
90, an automatic switch (95) that switches the control of the de-wall motor (7) to automatic mode, and detects that the mixed rice is overflowing from the upper part of the container (41) for measuring the falling weight as shown in Fig. 6. and an overflow switch (9B), each of the switches (θ3) C84) (95) (91) connected in series.
3) to the output regulation AND gates (91) and (112), and a main switch (as) for applying a power supply (97) to each part,
) to (8B) and (98) are all on, the demolition motor (7) is activated by the control of each relay (77) (7B) to automatically control the demolition rate.

The present invention is constructed as described above, and the main switch (9
7) is turned on, the expansion lever (6) is kept off, the hulling interruption switch (94) is kept on, and the setting volume (71) is operated with the dehulling rate dial (70) to set the standard dehulling. Initialize the cell rate. Then, by operating the manual handle (8flb), the demolition motor (7) is operated to close the demolition rolls (3) and (4), and after confirming this by changes in the driving sound, the demolition rolls (3) and (4) are brought into contact with each other. The shutter (5) is opened by opening the hulling gap (68) by a predetermined amount in step 4), and after a certain period of time when the grains of rice reach the dehulling rate sensor (4S), the hulling is started by operating the manual handle (88b). After adjusting the opening and closing of the gap (68) and lighting up the light emitting diode (75) for displaying the appropriate removal rate, the automatic switch (95) is turned on to start automatic control of the removal rate.

As shown in Fig. 9, which shows the line deviation of the decoupling rate input from the decoupling rate sensor (4S), in the appropriate decoupling rate R range centered on the decoupling rate sensor, which is the output of the setting volume (71), the light emitting diode (
75) displays the appropriate dehulling rate, and when the dehulling rate sensor (48) output changes to a high or low dehulling rate, the paddy is removed based on the dehulling rate change output of the dehulling rate calculation circuit (72). High and low removal rate control signals for closing or opening the sliding gap (88) are output from the linear driver (73) in multiple stages, and the removal rate is higher than the standard removal rate setting value of the setting volume (71). When the hole removal rate sensor of the hole rate sensor (48) changes slightly, the pulse oscillator (80) is activated via the intermittent control comparator (81) based on the output of the differential amplifier (79). Intermittent 81 due to pulse output
(85) (8B) to output a slightly higher or slightly lower removal rate control signal of the linear driver (73) to open or close relays (77) (78)
The dehulling motor (7) is intermittently operated by pulse drive through the , and the hulling gap (68) is gently opened and closed by intermittent control. Further, the off time adjustment circuit (90) sets the waiting time (off time) of the time waiting timer (88) based on the output of the differential amplifier (79), and also sets the waiting time (off time) of the time waiting timer (88).
8) Time regulation and gate (87) (887
is turned on at regular intervals, and the de-wall removal motor (7) is controlled at regular intervals according to the output time regulation of the timer (88).

On the other hand, if a large amount of shackles etc. are suddenly fed into the supply hopper (2), or
), if the supply of paddy suddenly decreases or increases,
The detection value of the removal rate of the removal rate sensor (48) changes significantly compared to the reference removal rate setting value of the setting volume (71), and at this time, based on the output of the differential amplifier (79), Continuous regulation and gates (82) (83) and time regulation and gates (87) (88) are operated continuously via a continuous control comparator (80), and the linear driver (7
The opening or closing relays (77) and (78) are continuously energized by the extremely high or extremely low demolition rate control signal of 3), and the demolition rate is greatly controlled by continuously driving the demolition motor (7). , the hulling gap (68) is rapidly opened and closed by continuous control.

In addition, the drive load change of the demolition rolls (3) and (4) is detected by the load current change of the motor that drives them, and the demolition rate of the rolls (3) and (4) is detected based on the load current change. However, the same control as above can be easily performed.

"Effects of the Invention" As is clear from the above embodiments, the present invention provides a method for adjusting the dehulling rate, such as a dehulling motor (7) that adjusts the hulling gap (88) between the pair of dehulling rolls (3) and (4). In a hulling machine that is equipped with a member and automatically controls the hulling gap (68) based on the detected value of the hulling ratio of the hulling rolls (3) and (4).

The system is configured to operate and control the demolition rate adjusting member (7) by continuous control when the demolition rate detected value changes significantly compared to the demolition rate set value, and by intermittent control when it changes by a small amount. As a result, the hulling gap (B8) control operation can be made to follow the actual dehulling changes of the dehulling rolls (3) and (4) well, and the dehulling rate setting value and the dehulling rate detected value can be adjusted. When the difference between the set value and the detected value is large, the demolition rate can be corrected quickly, and when the difference between the set value and the detected value is small, the demolition rate can be corrected slowly, making the demolition rate control more agile and stable than before. This provides advantages such as easy handling and simplification of handling operations.

[Brief explanation of the drawing]

Fig. 1 is a rice huller control circuit diagram showing one embodiment of the present invention;
The figure is an overall view of the huller, Figure 3 is a front cross-sectional view, Figure 4 is an enlarged cross-sectional side view, Figures 5 to 7 are enlarged cross-sectional views of the bypass pipe, and Figure 8 is a cross-sectional view of the huller. The explanatory diagram, FIG. 9, is a dropout rate input diagram. (3) (4)... Wall removal roll (7)... Wall removal rate motor (wall removal W joint member) (68
)... Hulling gap Yanmar Agricultural Machinery Co., Ltd. 8th day 9th day pr rate →

Claims (1)

[Claims] A hulling machine that is equipped with a hulling rate adjusting member that adjusts a hulling gap between a pair of hulling rolls, and automatically controls the hulling gap based on a detected value of the hulling ratio of the hulling rolls. When the detection value of the removal rate changes significantly compared to the rate setting value, continuous control is used, and when it changes by a small amount, intermittent control is used to control the removal rate.
A rice hulling machine characterized by being configured to control the operation of a rate adjusting member.