JPH0794016B2 - Removal device for hulling machine - Google Patents

Description

Description: “Industrial field of application” The present invention relates to a decontamination device for a grain hulling machine, which rotates a pair of main and sub derolling rolls by belt drive to remove the paddy.

"Prior Art" For example, as described in Japanese Patent Laid-Open No. 59-193148, the change state of the roll drive load is detected by detecting the change in the current value and the rotation speed of the roll drive motor to maintain a constant loss rate. There is a means to do so.

"Problems to be solved by the invention" However, in such a case, the environment resistance of the motor (electric power situation / temperature) or other drive device (suction fan, conveyor, sorting device, etc.) driven by this motor Due to the driving load, there is a drawback that an accurate driving load cannot be detected only in derolling. Further, since the load characteristics of the motor are requested, only one type of motor can be applied to one control system, and in addition, a driving force source such as an engine other than the motor cannot be applied.

[Means for Solving the Problems] Therefore, the present invention provides a main roll roller and a sub roll roll sensor that detect the rotation of the main roll and the sub roll roll, respectively, and roll drive based on the roll rotation difference detected by these rotation sensors. A roll drive load sensing element for sensing a load is provided.

[Operation] Therefore, according to the present invention, regardless of the environmental resistance of the motor for driving the derolling, and without being affected by the load of the other driving device driven by the motor, only the driving load for the derolling. Can detect any driving force source such as an engine other than the motor regardless of the load characteristics of the motor, and has excellent adaptability. Can be accurately sensed.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an explanatory view of derolling, FIG. 2 is an overall view of a huller, and FIG. 3 is a sectional view of the same. In the figure, (1) is a paddy hull, (2) is a supply popper for putting paddy, (3) (4)
Is a pair of main and auxiliary derolling rolls that are placed opposite to the lower part of the hopper (2), (5) is a paddy feeding roll provided at the lower part of the hopper (2), (6) is each roll (3) (4) manually A deployment lever that is opened urgently by an operation, and (7) is a removal rate motor that adjusts the rolls (3) and (4) to contact and separate.

In the figure, (8) is a wind-selecting section on which the hulling section (1) is mounted, and removes small rice from brown rice removing gutter (9) and brown rice conveyor (10) and brown rice falling on the gutter (9). Karato (11)
And the derolling rolls (3) (4) through the small rice pick-up gutter (12) and the small rice conveyor (13) that carry the small rice out of the machine, and the grain scattering plate (14) and the flow grain plate (15). Sliding-off rice picking gutter (16) and sliding-off rice conveyor (17) facing down and receiving scraped-off rice (brown rice and paddy); A rice porridge conveyor (19) and a dust suction and exhaust fan (20) for discharging the rice husks separated from the scraped rice to the outside of the machine.

Further, in the figure, (21) is a sorting section mounted on the wind selecting section (8) and arranged in parallel with the hulling section (1), and as shown in FIG.
Upper and lower sorting cylinders (22) and (23) for continuous rotation in one direction to separate brown rice and paddy, and bearing rolls (24) for supporting the cylinders (22) and (23) rotatably, respectively (25) )…When,
A mixed rice supply tank (26) provided outside one end of the upper selection cylinder (22), a supply conveyor (27) inserted in the upper selection cylinder (22), a re-graining conveyor (28), and a brown rice receiving conveyor (29). , A brown rice receiving conveyor (30) to be inserted into the lower sorting tube (23), a rice sorting machine (31) provided between the upper and lower brown rice receiving conveyors (29) (30) and connected in series, and an upper sorting tube The chute (32) for communicating the paddy discharge end of (22) with the hopper (2) and the re-graining conveyor (28) are connected to the lower sorting cylinder (23).
To the rice picking gutter (16) by sliding down the mixed rice discharge end of the lower sorting tube (23) to the rice picking gutter (16), and the brown rice receiving conveyor (30) to the brown rice picking gutter (9). ) Is connected to the chute (35).

Then, a brown rice lifting conveyor (36) for communicating the lower end side with the brown rice conveyor (10), and the scraped rice conveyor (17)
And a sorting rice lifting conveyor (37) that communicates the lower end side to the stand along the outside of the machine, and connects the upper end of the sorting rice lifting conveyor (37) to the supply tank (26) with a pipe ( 38) to communicate with each other, and the slid-off rice from the paddy hull (1) and the return-mixed rice from the sorting cylinder (23) are merged and put into the supply tank (26).

Furthermore, the hulling section (1), the wind selecting section (8) and the selecting section (2
1) is provided with a hulling motor (39), and the derolling shafts (3a) (4a) are connected to pulleys (40) (41) and belts (42).
The rolls (3) and (4) are configured to rotate at high speed and low speed by belt driving by interlockingly connected to the hulling motor (39) via a) and (42b).

As shown in FIG. 5, the derolling rolls (3) and (4) are arranged in the grain hull case (44) communicating with the paddy discharge port (43) of the supply hopper (2). The roll shaft (4a) of the roll (4) is rotatably supported in the middle of the gap adjusting link (45), the base end of the link (45) is swingably supported by the supporting shaft (46), and the removal ratio motor (7) ) To gear (47)
Each roll that connects the other end of the link (45) to the screw part (49a) of the gap adjusting shaft (49) that is interlockingly connected via the (48), and puts in the paddy by the forward / reverse control of the motor (7). (3) The roll gap (50) of (4) is configured to be enlarged or reduced.

Further, a supply valve (53) is provided below the supply shutter (51) of the paddy discharge port (43) through an adjusting bolt (52) so that the opening can be adjusted. The supply valve (53) has a substantially central portion. A paddy sensor (54) for detecting paddy is embedded in the paddle, and when the shutter (51) is opened, the paddy in the supply hopper (2) is derolled (3).
In the state of being supplied to (4), this is sensed to be turned on.

Further, as shown in FIG. 1, the derolling (3) (4)
The magnets (55) (56) are fixedly mounted on the large and small pulleys (40) (41) that transmit the driving force to the pulleys (40) (41).
Rotation sensor (57) (5
8) is installed, and the rotations of the derolling rolls 3 and 4 are detected by the sensors 57 and 58.

As shown in FIG. 6, the power source (5
The sensors (57) and (58) are connected to a control circuit (60) which is a roll driving load sensing element for applying 9), and sensor values (b) and (c) detected by the respective sensors (57) and (58). The rotation difference (1b-c1) is detected from the
The drive torque of the rolls (3) and (4), that is, the roll load is calculated based on c1). (During normal roll work, the larger the roll load, the smaller the rotation difference.) In addition, the roll load setter (61) that sets the reference value of the roll load is input to the control circuit (60). While connecting
The control circuit (60) is connected to the removal motor (7), and the roll load based on the detection of each sensor (57) (58) is less than or equal to the reference set value (a) of the setter (61). In the above case, the removal motor (7) is driven forward and backward to adjust the roll gap (50).

Further, the control circuit (60) is connected to a dry alarm (62) and a belt slack alarm (63), and the sensor (57) is connected.
When the roll load based on the detection of (58) is below a certain value (the rotation difference hardly changes), the skid alarm (6
2) is actuated, and the belt slack alarm device (63) is actuated when the roll load based on the sensors (57) (58) hardly changes despite the roll gap control being performed once, and the belt slack alarm device (63) is actuated. The slack adjustment of (42a) or belt replacement is performed.

This embodiment is configured as described above, and its operation will be described below with reference to the flowchart of FIG.

Now, when the shutter (51) is opened and the paddy sensor (54) on the supply valve (53) detects paddy, this removal rate control is started, and during the removal work by the removal rolls (3) and (4). The rotary sensor (57) (58) detects the rotational change between the rolls (3) and (4), that is, the fluctuation state of the roll load, and drives and controls the removal ratio motor (7) to adjust the roll gap (50). It is a thing. That is, when there is no change in the rotation of the rolls (3) and (4) and there is no change in the rotation difference (1b-c1), and the roll load calculated based on the change is less than a certain value, the dry alarm ( When the roll load changes from the set value (a) to below (rotational difference (1b-c1) between rolls (3) and (4) is larger than the set value), the motor (7) is operated. Drive to adjust the roll gap (50) in the closing direction, and the roll load is more than the set value (a) (rotation difference between rolls (3) and (4) (1b-c1) is smaller than the setting). In a changing state, the motor (7) is driven to adjust the roll gap (50) in the opening direction, and the roll load is always kept constant so that the removal rate is kept constant. During this control, the belt slack alarm (63) is activated when the roll gap (50) is closed once according to the fluctuation of the roll load, but the roll load remains unchanged. It is to notify that slip has occurred between the belt (42a) and the pulleys (40) (41).

In addition, in the above-mentioned embodiment, the main and auxiliary derolling (3)
Although (4) shows the configuration example in which both of them are driven by the belt, only one of them may be driven by the belt and the other may be configured to maintain a constant speed.

Further, as the rotation sensors (57) and (58), a photocoupler, a pulse pickup, or the like may be used instead of the reed switch.

"Effects of the Invention" As is apparent from the above examples, the present invention is directed to the belt (42
a) A pair of main and auxiliary derolling by driving (3)
In the structure in which (4) is rotated to remove the paddy, main and sub roll rotation sensors (57) (58) for detecting the rotations of the main and sub derolling rolls (3) and (4) are provided, and Since the roll drive load sensing element (60) that senses the roll drive load based on the roll rotation difference detected by these rotation sensors (57) (58) is provided, the roll drive load is detected by the load characteristics of the motor. It is possible to detect the driving load accurately only by the derolling (3) and (4) without being affected by the environmental load, and without being affected by the load of other driving devices. It is possible to deal with the driving force source of the machine, and it is excellent in responsiveness, and the roll is removed (3)
It is possible to detect the slipping of (4) and the looseness of the belt (42) and prevent them, which is a remarkable effect.

[Brief description of drawings]

FIG. 1 is an explanatory plan view of a roll removing unit, FIG. 2 is an overall view of a huller, FIG. 3 is a front view of the same section, FIG. 4 is a side view of the same section, and FIG. FIG. 6 is a control circuit diagram and FIG. 7 is a flow chart. (3) (4) …… Roll removal (42a) …… Belt (57) (58) …… Rotation sensor (60) …… Roll drive load sensing element

Claims (1)

[Claims] 1. A structure in which a pair of main and auxiliary derolling rolls are rotated by belt drive to remove the paddy,
A main and sub roll rotation sensor for detecting the rotation of each of the main and sub derolling rolls is provided, and a roll drive load sensing element for sensing a roll drive load based on a roll rotation difference detected by these rotation sensors is provided. Dehulling control device for hulling machine.