JPH0716617B2 - Removal device for hulling machine - Google Patents

Description

Description: “Industrial field of use” The present invention relates to a decontrolling device for a grain huller that removes grain after dehulling by derolling and removes unpolished rice.

[Prior Art] Conventionally, as shown in Japanese Utility Model Publication No. 46-2432, there has been a technology for performing a hulling operation by expanding a derolling gap.

[Problems to be Solved by the Invention] The above-mentioned conventional technique has a drawback in that, when the depressurization is increased in the rate-releasing control, the rate of degrading is improved, but the brown rice causes a skin slippage and the quality of the brown rice is deteriorated.

"Means for Solving the Problem" Therefore, the present invention provides a brown rice skin shift sensor for detecting the skin shift state of debrown rice, and the derolling gap is set to a limit position where the sensor detects the skin shift occurrence of debrown rice. It is characterized by narrowing.

"Operation" Therefore, it is possible to perform optimal deworking under the maximum removal rate condition that does not cause skin deviation of brown rice, improve work efficiency, and de-control the huller to maintain stable quality of brown rice. It is intended to provide a device.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings. First
The figure is a schematic side view of the whole, in which (1) is a huller,
(2) is a paddy supply hopper of the huller, (3) and (4) are a pair of derollers installed in the lower part of the hopper (2), and (5) is a rocking sorter for the mixed rice after debatch. The mixed rice elevator for feeding to (6), (7) the mixed rice tank of the rocking sorter (6) for storing the mixed rice from the elevator (5) through the discharge chute (8), and (9) A supply tank for distributing and supplying the mixed rice from the tank (7) to the rocking sorting section (10),
(11) is a discharge gutter that discharges the grains after selection, and the mixed rice detreated by the huller (1) is shaken by the rocking sorter (10) of the rocking sorter (6). It is configured such that brown rice and paddy are separated and sorted by a dynamic motion and taken out to a delivery chute (12) through a discharge gutter (11).

As shown in FIG. 2, the hulling machine (1) is provided with a feeding roll (13) for quantitatively flowing down the rice from the hopper (2) to the derolling rolls (3) and (4), and an adjusting link (14). The derolling (3) on the variable side, which is supported and supported, is brought close to the derolling (4) on the fixed side to reduce the depressurization of each roll (3) (4) to 1
Step air cylinder (15) with variable adjustment for each step
And suction of dust such as rice husk contained in the mixed rice falling from the rolls (3) and (4) through the mixed rice downflow port (16) to the grain shedding plate (17) by the dust extraction fan (18). Sample air is extracted one by one from the sorting air passage (19) discharged to the outside by the wind force and the mixed rice falling below the end of the flow plate (17) provided below the end of the plate (17). The sample gutter (20) having a V-shaped cross section and the sample rice flowing down on the sample gutter (20) are irradiated with detection light to determine whether the sample rice is brown rice or paddy based on the difference in reflected light amount received. The photoconductive type de-sensor (21), the mixed rice removing gutter (22) for sending the mixed rice falling from the grain board (17) to the mixed rice elevator (5), and the sample gutter (20) A sample take-out gutter (23) for sending the sample rice to the mixed rice elevator (5), The sensor (21) discriminates the sample rice taken out one by one into the V-shaped groove of (20) into brown rice and paddy, and based on the discriminating operation by the sensor (21), the de-salting is performed at regular intervals. It is configured to detect the removal rate of the rolls (3) and (4).

Further, the rocking sorter (6) includes a rocking sorter plate (24) which is provided in the rocker sorter unit (10) in multiple stages and swings, and a swinging sorter (24) on the left swinging side. A brown rice partition plate (25) that separates and separates the brown rice layer and the mixed rice layer that are separated from each other, and separates the paddy layer and the mixed rice layer that are separated and biased to the right sway side on the sorting plate (24). A brown rice gutter (11a) and a mixed gutter (11) of the brown rice and the paddy rice (25) (26), which are separated and picked up by the brown rice and the paddy partition (25) (26). It is configured to be taken out to the lower delivery chute (12) through the rice gutter (11b) and the rice gutter (11c). Furthermore, below the brown rice gutter (11a), an impact line flow meter type brown rice skin misalignment sensor (2) that allows the potentiometer (28) to detect changes in the flow rate of brown rice flowing down from the quantitative detection container (27)
9), which is configured to be detected by the sensor (29) when the brown rice has a skin slippage due to an increase in the depressurization of the derolling rolls (3) and (4) and its fluidity decreases. is doing. That is, the sensor (29) is configured to detect the occurrence of skin misalignment of brown rice based on the change in the flow rate.

FIG. 3 shows a depressurization control circuit for the derolling rolls (3) and (4), and a main switch (32) for applying a power supply (31) to each part of the control circuit (30) composed of a microcomputer. And the potentiometer (28) of the sensor (29) and the automatic switch (33) are connected, and the de-sensor (21) and a reference de-rate that is a reference value of the sensor (21) are set. Remove rate setting device (34)
And a brown rice flow rate setting device (3) for setting the reference flow rate of good brown rice with no skin deviation, which is the reference value of the potentiometer (28).
5) and an initial depressurization setting device (36) for setting depressurization immediately after the start of work are connected to the control circuit (30). The air cylinder (15) is connected to the step drive circuit (3
It is connected to the control circuit (30) via 7), and a manual adjustment switch (38) for manually operating the air cylinder (15) and a display circuit (39) are used to display the removal rate during work. The removal rate indicator (40) is connected to the control circuit (30), and a brown rice skin shift sensor (29) for detecting the skin shift state of unbrown rice is provided, and the sensor (29).
Is configured to widen the derolling gaps (3) and (4) to a limit position for detecting the occurrence of skin deviation of debrown rice.

The present embodiment is configured as described above, and the de-sensor (21) detects the desorption rate of the mixed rice deaerated by the de-rolling (3) and (4), and separates and sorts from the mixed rice. The brown rice skin misregistration state is detected by a change in the flow rate detected by the brown rice skin misregistration sensor (29), and the depressurization of the derolling rolls (3) (4) is based on the detection value of the sensor (29). Control it.

This operation will be described below with reference to the flowchart shown in FIG.

At the beginning of work, when the automatic switch (33) is turned on and the brown rice skin shift sensor (29) detects no brown rice flowing or a certain amount or less, the stored reference flow rate value of the sensor (29) is reset (1 It is reset for each lot), and the depressurization of the derolling rolls (3) and (4) is set and adjusted to an initial depressurization (a pressure that does not cause skin shift in brown rice) which is lower than the normal depressurization by a constant pressure. Then, the flow rate of the selected brown rice in the mixed rice removed under these conditions is detected by the brown rice skin shift sensor (29), and the detected flow rate value at this time is used as a reference value of good brown rice without skin shift in the control circuit. The input is stored in (30) and the control is started thereafter. Thus, when the sensor (29) detects the flow rate of brown rice and the detected flow rate value is substantially equal to or more than the above-mentioned stored flow rate value (large), that is, when skin deviation does not occur, the air flow The cylinder (15) is extended by one step to adjust the depressurization of the derolling rolls (3) and (4) to one step higher to increase the desorption rate, while the flow rate detected by the sensor (29) is When it is less than or equal to the stored flow rate value (small) (when skin slippage occurs), the air cylinder (15) is contracted by one step to reduce the depressurization of the derollers (3) and (4) by one step. Regulates and reduces brown rice blemishes.

As described above, in the above-mentioned embodiment, the deworking is started under the depressurization that is lower than the normal work depressurization at the start of work and does not cause skin shift in brown rice, and at this time, it is detected by the sensor (29). The flow rate value of brown rice is stored in the control circuit (30) as a reference value of good brown rice with no skin shift, and thereafter, the roll is derolled under the maximum depressurization condition above this reference flow rate value (3) (4)
By adjusting, it is possible to carry out deworking under optimum conditions with no skin shift, work efficiency with maximum removal rate, and good quality.

[Advantages of the Invention] As is apparent from the above examples, the present invention is provided with a brown rice skin shift sensor (29) for detecting the skin shift state of unbrown rice, and the sensor (29) detects the occurrence of skin shift of unbrown rice. The gap between the rolls (3) and (4) is expanded to the limit position where it is possible to perform the optimal work removal under the maximum removal rate condition that does not cause skin shift, and improve the work efficiency. In addition to being able to do so, the quality of brown rice can be stably maintained.

[Brief description of drawings]

FIG. 1 is an overall side view showing an embodiment of the present invention, FIG. 2 is an explanatory view of essential parts, FIG. 3 is a decontrol circuit diagram, and FIG. 4 is a flowchart thereof. (3) (4) …… Roll removal (29) …… Brown rice skin misalignment sensor

Claims (1)

[Claims] 1. A brown rice skin shift sensor (29) for detecting a skin shift state of debrown rice, and derolling (3) to a limit position where the sensor (29) detects a skin shift of debrown rice.
(4) A de-control device for a huller, which is characterized by expanding the gap.