JPS61263650A - Dehulling controller of 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" For example, as shown in Japanese Patent Publication No. 51-1620, the load variation meter is equipped with a load variation meter that senses the load of an electric motor for driving the removal roll, and a removal roll gap adjustment device, and the output of the load variation meter is There are means to control the roll gap based on the value.

"Problems to be Solved by the Invention" However, the above means requires a switching operation depending on the frequency of the commercial power source of the electric motor serving as the drive source. In addition, it is necessary to change the control circuit connected to the load variation meter according to the specifications of the electric motor, as well as the circuit that changes the AC output of the variation meter to DC, and the output of the variation meter based on mechanical transmission loss. Therefore, it is necessary to form a circuit for correcting the Φr, so that it is difficult to simplify the control circuit and the handling operation.Means for solving the problem of Φr. The structure includes a roll gap adjustment member that adjusts the gap between a pair of demolition rolls, and a rotation detector is provided to detect the rotational speed of an electric motor that drives the demolition rolls, and the rotation output of the detector is The roller gap adjusting member is configured to be controlled based on the above.

"Function" Therefore, the roll gap adjusting member can be operated by the same control circuit regardless of changes in the power supply frequency of the electric motor and the specifications of the motor, and an output that is easy to process can be easily output from the rotation detector. Therefore, it is possible to simplify the control circuit and the handling operation compared to the conventional method.

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

Figure 1 is a rice huller control circuit diagram, Figure 2 is an overall view of the rice huller, and Figure 3 is a cross-sectional view of the same.
2) is a supply hopper into which paddy is input; (3) (0 is a pair of dehulling rolls installed oppositely at the bottom of the hopper (2); (5) is a shutter that opens and closes the bottom of the hopper (2); (8) (7) is a roll gap adjustment member that adjusts the approach and separation of the rolls (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 (9) and a brown rice conveyor (10).

Karawine (1) removes small rice from the brown rice that falls into the gutter (3).
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 (1B) facing downward and receiving surioshi rice (brown rice and paddy) and a surioshi rice conveyor (17);
A pick-out gutter (1B) that receives the picks separated from the washed rice
) 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).
), as shown in Fig. 4.

Upper and lower sorting cylinders (22) (23) that rotate continuously in one direction to separate brown rice and paddy, and each part (22) (23)
3) supporting rolls (24) that rotatably support each
...(25)..., a mixed rice supply tank (2e) provided outside one end of the upper sorting tube (22), and an upper sorting tube (22).
2), a supply conveyor (27), a re-sorting grain conveyor (28), a brown rice quantity conveyor (29), a brown rice quantity conveyor (30) inserted in the lower sorting cylinder (23), and an upper and lower brown rice quantity conveyor. A rice sorter (31) is installed between (28) and (30) and connects them in series, and a shoe that communicates the paddy discharge end of the upper sorting tube (22) with the hopper (2)) (32
), a shoe that connects the re-sorting grain conveyor (28) to the lower sorting tube (23)) (33), and the lower sorting tube (23)
A shoe (34) for connecting the mixed rice discharge end of the mixed rice to the rice take-out gutter (1B) and a shoe (35) for communicating the brown rice quantity conveyor (3G) 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 (10), and a brown rice lifting conveyor (38) that communicates with the brown rice conveyor (10);
Sorting rice lifting conveyor (37) whose lower end side communicates with 17)
) along the outside of the machine.

The sorted rice lifting conveyor (3) is placed in the supply tank (2B).
7) The upper end is communicated through a connecting pipe (3B) so that the scraped rice from the hulling section (1) and the returned mixed rice from the sorting tube (23) are combined and fed into the supply tank (26). It is composed of

Further, an overflow gutter (39) is provided which communicates the upper end side with the supply tank (26), and an on-off valve (40) is attached to the lower end opening of the overflow gutter (39) facing the upper surface of the supply hopper (2). (2B) is returned to the supply hopper (2) via the overflow gutter (38), and the on-off valve (40) is adjusted in proportion to the increase in the amount of mixed rice returned to the supply hopper (2). is configured to open and operate.

Furthermore, the hulling section (1), wind sorting section (8) and sorting section (2)
The hulling motor (41) is an electric motor that drives the hulling rolls (3) and (4).
).

FIG. 5 is an explanatory diagram of the rice huller (1), and the support shaft (42) (
The floating rolls (3) and (4) respectively supported on the shafts (43) are installed internally facing the hulling case (44), and each shaft (42) (
The transmission gear (45) (4B) is pivotally supported by the rice huller 43), and a gear case (47) is provided in the hulling case (44), and the gear (45) (4B) is fitted inside the case (47). In addition, a drive gear (SO) (51) is pivotally supported in the case (47) via power shafts (48) (49), and each gear (45) (4B) and (50) (5) is always in mesh. At the same time, the support shaft (43) of one of the wall removal rolls (4) is pivotally supported in the middle of the four-joint link (52) in the gap y,
One end of the link (52) is supported coaxially with one of the power shafts (48). and the removal rate motor (7)
a gap adjustment shaft (55) interlockingly connected to each other via gears (53) and (54), and a threaded portion (55a) at one end of the shaft (55) via a bearing member (5B) to the other end of the link (52). ) are screwed together, and the hulling gap (57) of each roll (3) and (4) into which paddy is introduced is automatically adjusted to enlarge or contract by forward/reverse control of the motor (7).
said shirt) (55) At the other end is a deburring rate adjustment handle (5
8), and the hulling gap (57) can be manually adjusted to enlarge or reduce by rotating the handle (58).

In addition, a shutter (5) is installed above the deburring rolls (3) and (4).
The paddy from the supply hopper (2) is placed below each roll (
3) (4) A feed-out roll (58) that is dropped between the feed rolls (58), a supply valve (BO) that adjusts the amount of paddy that is dropped from the feed-out roll (59), and a ≠ inter-paper closing operation of the valve (80). A polanshi-meter type paddy supply amount sensor (8
1), the supply valve (80) and the on-off valve (40)
are interlocked and connected by a wire (B2) or the like, and close the supply valve (B0) in proportion to the opening movement of the on-off valve (40),
This system automatically adjusts the amount of paddy supplied to the dehulling rolls (3) and (4) so that a constant amount of mixed rice is always sent to the sorting section (21), and the amount of paddy that is returned from the sorting tube (23) is mixed. When the scraped rice containing rice from the hulling section (1) accumulates in the supply tank (2B) in excess of a set amount, the scraped rice in excess of the set amount is transferred from the overflow gutter (39) to the supply hopper (2) as overflow rice. ) along with falling.

The on-off valve (40) opens and closes in proportion to the amount of overflow rice, and the supply valve (40) opens and closes in inverse proportion to the amount of overflow rice.
80) closes and opens, and based on the opening/closing operation of the supply valve (80), the paddy supply amount sensor (at) detects the dehulling roll (3).
(4) It is configured to detect the amount of rice to be supplied.

Furthermore, a rotation detector (B3) is attached to the hulling motor (41) to detect the rotational speed, and the standard dehulling rate of the dehulling rolls (3) and (4) is initially set as shown in FIG. a reference setter (80), the detector (83)
and the setting device (84) and the removal rate adjustment comparator (85).
Connect the input to (8B). The paddy supply amount sensor (61) is interposed between the setting device (80) and the comparator (85) (88), and the paddy supply amount sensor (61)
as) (eEI) Based on the output of the ejection rate motor (7)
The dehulling roll (
3) It is configured to adjust the expansion and contraction of the (0) hulling gap (57).

The present invention is configured as described above, and the rice hulling motor (4
1) while applying this power to the supply hopper (
2), the hulling operation is started by inputting the paddy to When the load increases, the number of revolutions of the motor (41) decreases in proportion to this, so for example, when the number of revolutions of the motor (41) falls below the standard, the number of revolutions of the motor (41) decreases below the reference level, the number of revolutions of the number of revolutions of the motor (41) decreases below the reference level, the number of revolutions of the number of revolutions of the motor (41) decreases below the standard, and the number of revolutions of the number of revolutions of the motor (41) decreases below the standard, the number of revolutions of the number of revolutions of the motor (41) decreases below the reference level, and the number of revolutions of the number of revolutions of the motor (41) decreases below the reference level, the number of revolutions of the number of revolutions of the motor (41) decreases below the reference level, and the number of revolutions of the number of revolutions of the motor (41) decreases below the reference level. (
3) While expanding the hulling gap (57) in (4), increasing the rotation of the motor (41) reversely increases the hulling gap (57).
57) to keep the dehulling rate of the dehulling rolls (3) and (4) substantially constant. Note that the amount of paddy supplied to the dehulling rolls (3) and (4) changes depending on the amount of paddy that is supplied to the dehulling rolls (3) and (4). Since the rotation speed changes, the reference value of the reference setting device (84) is corrected by the paddy supply amount sensor (81).

Regardless of the change in the amount of paddy supplied, the change in the actual dehulling rate and the hulling motor (
41), and even when the power supply frequencies (50H2 and 60H2) were varied in the measurements shown in FIG. 6, substantially the same slip ratio was obtained.

"Effects of the Invention" As is clear from the above embodiments, the present invention provides a roll gap adjustment member such as a demolition rate motor (7) that adjusts the gap (57) between a pair of demolition rolls (3) and (4). In this structure, a rotation detector (83) is provided for detecting the rotation speed of an electric motor such as the hulling motor (41) that drives the dehulling rolls (3) and (4), and the rotation speed of the detector (83) is It is configured to control the roll gap adjusting member (7) based on the rotation output, and the roll gap adjustment member (7) is controlled by the same control circuit regardless of changes in the power frequency of the electric motor (41) and the specifications of the motor (41). The gap adjustment member (7) can be actuated, and an output that is easy to process can be easily obtained from the rotation detector (83), which simplifies the control circuit and handling operations compared to conventional methods. This has the advantage that it is possible to easily achieve the following.

[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 cross-sectional front view, Figure 4 is an enlarged cross-sectional side view, Figure 5 is an explanatory diagram of the huller, and Figure 6 is a relative diagram of load and rotation speed. It is. (3) (4)... De-entraining roll (7)... De-entrainment rate motor (roll gap adjustment member)
(41)... Husking motor (electric motor) (57)
... Hulling gap (63) ... Rotation detector applicant Yanmar Agricultural Machinery Co., Ltd. Seirei Kogyo Co., Ltd. 4th Prisoner 15th

Claims (1)

[Claims] In a structure equipped with a roll gap adjustment member for adjusting the gap between a pair of de-rolls, a rotation detector is provided to detect the rotational speed of an electric motor that drives the de-rolls, and a rotational speed is determined based on the rotation output of the detector. 1. A removal control device for a huller, characterized in that it is configured to control a roll gap adjustment member.