JPS59115754A - Apparatus for measuring dehulling rate of dehulling machine - 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 The present invention includes, for example, a pair of deweighing rolls that separate paddy into brown rice and rice husks, and a deweighing adjustment mechanism that controls the unbalanced load between the rolls. Regarding the hulling machine that takes out mixed rice, it is equipped with a reflective grain sensor and a transmission grain sensor with a photoconductive structure that distinguish and detect brown rice and paddy in the mixed rice that is removed from the dehulling roll. It detects the same grain almost simultaneously and adds these outputs, so even when the difference in detected light level between brown rice and paddy is small, brown rice and paddy can be accurately distinguished from each other based on the difference in light level. , a rice huller σ) Deweighing rate that can be simply configured by eliminating the need for multiple sensors of the same type, either reflective type or transmissive type, and can quickly calculate an appropriate deweighing rate. An embodiment of the less-than-zero tree invention intended to provide a measuring device will be described in detail based on the drawings. Fig. 1 is an overall cross-sectional view of the huller, and Fig. 2 is a partial cross-sectional view of the same. (1) A feed roll installed at the outlet and causing a fixed amount of y to flow down;
(3) is a shutter that changes the amount of paddy being fed out by the roll (2), (4) is a screw that adjusts the opening/closing of the shutter (3), and +51 tel is a screw that is installed below the feeding roll (2) to remove the paddy. A pair of deweighing rolls (7) separate rice into brown rice and rice husks, and the variable-side late-weighing roll (6) supported via a link (8) is brought into contact with and separated from the fixed-side deweighing roll (6). An air cylinder is a deweighing adjustment mechanism that changes the deweighing field (load) of each roll +51 +61.
), and (12) is a general grain cone centered around the support shaft (13) on the upper end of the slope.

The grain flow plate (f+41) whose lower angle can be changed freely selects straw waste such as rice husks that fall from the flow outlet (11) onto the grain flow board (12), and sucks and discharges it to the outside of the machine via the 911 air passage (15). The fan (16) is a mixed rice take-out hopper that feeds the mixed rice of brown rice and paddy that falls from the grain board (12) to the yangyu tube (171), and The mixed rice is continuously taken out through the feeder.

In the folded figure, (18) is a reflection plate that is a deceleration member that is installed opposite to the 4@ diagonal end of the grain grain board (12) and brings the flowing mixed rice into contact with it, and Q9) is a reflector plate that is a deceleration member that is placed opposite to the slanted end of the grain grain board (12). 12) is connected to the center of the inclined lower end of the sample take-out chute, (20) is the sample gutter that receives the mixed rice flowing down the upper surface of the grain plate (12) and the shoe) after it comes into contact with the reflector plate (181); 1
2Il is a reflective grain sensor with a photoconductive structure that irradiates the mixed rice falling from the sample gutter 4 with detection light and detects the amount of reflected light from the mixed rice by receiving the reflected light, and i2Z is the reflective grain sensor. A transmission-type grain sensor with a photoconductive structure that receives the detection light of the grain sensor 1211 and detects the amount of light transmitted through the mixed rice, FIG.
The mixed rice detected by the sensor 1211 +221 is fixedly supported and shaken through the hopper (23 is attached to the upper part) +241 as shown in the hopper αη. -y 'f ツ) v
Support arm (24a x 24
b) Each of the sensors 1211 + 22) (i7)
, the respective sensors 1211 +22] are arranged oppositely on substantially the same straight line.

Further, the sample gutter (
20) forms this end face into a V shape, and has a small reduction part (?oa) with an inclination angle of (5) on the inclination upper end side of the chain gutter (2o), and a large increase in inclination angle of 03) on the inclination lower end side. Fast section (20b)
In addition, a convex curved part (20c) connecting each part (20a) and (20b) is provided in the middle of the same, and the speed increasing part The width of the V-shaped groove (12) in the part (20b) is made larger so that the grain interval (old) flowing down the speed-up part (20a) is larger than that in the speed-up part (20a).
0b) is configured so that the grain interval (H2) flowing down the grain is large.

The light receiving part (21a) of the reflective grain sensor (21) is positioned diagonally above the lower end of the sample gutter (20), and the transmission grain sensor +22 is placed approximately in front of the light receiving part (21a). The light receiving part (22a) of each sensor 2+1 +221 is positioned, and the detected light from the light emitting part (21b) of the reflective grain sensor 1211 is transmitted to the light receiving part (21a) (22a)K of each sensor 2+1 +221.
Therefore, it is configured so that the light is received almost simultaneously and the same grains are detected almost simultaneously by each of the sensors Q221, and the brown rice (25a) and '
gl (25b) grain length (DI) (D2) phase 1 (DI:
D2=2:8) detection time and its brown rice (25a)
and the amount of reflected and transmitted light from the paddy (25b) by each sensor (2
These are detected by the old 2z, and as shown in Figure 8), I
IIIF Each sensor with the same characteristics 1211 +22
) of ffl (25b) is larger than the detection time (T2) and voltage of reflected and transmitted light (V2) of brown rice (25a), and Detection time (TIXT2) and reflected and transmitted light amount voltage (Vl) (V2) are different from paddy (25
b) and brown rice (25, 11), they are detected as deformed grains by the sensors 12+1 +221, respectively, and the time (TI !:
It is formed so that f(Vl)(V2) is doubled and added.

Moreover, FIG. 9 is a deweighing rate control circuit diagram, in which each sensor 1211122117') time ('I'l) (T2)
It is equipped with an adder circuit +261 that adds and outputs the output and voltage (vl) (v2) outputs, respectively, and outputs the time (2TI) (2T2) signal obtained by adding the signal levels of each sensor t2111221, as shown in the addition output in Fig. 8. and electric E (2V
IX2V2) signal is output from the adder circuit (26), and a brown rice time setting device 1271 adjusts the brown rice detection time (T2) according to the grain length (DI) of brown rice (251), and the reflected and transmitted light amount of brown rice +251. Depending on the brown rice detection voltage (v
2) and the addition output of each grain sensor +21+T22) and each setter (2).
7+ +2810 Comparator to compare each output +2
91 (30) and each comparator +291 (30)
A brown rice detector (31) that detects brown rice based on the output of
and is configured to detect brown rice discharged from the sample gutter (2o).

Furthermore, the paddy detection time (
Paddy time setting device (321) that adjusts T1) and paddy +261
a paddy electric field setting device (33) that adjusts the paddy detection voltage (Vl) according to the amount of reflected and transmitted light; and each of the grain sensors 12.
A comparator (3/N (35)) that compares the output of each setter +321 (33), and a paddy detection circuit that detects paddy based on the output of each comparator (341 (35)). (36), and the paddy discharged from the sample gutter (20) is collected so as to be detected.

Next, each grain sensor t2+1 +2';! A sample time setter country that adjusts the mixed rice detection time of brown rice and paddy by I, a counter f3811391 that counts brown rice and paddy within the mixed rice detection time of the setter (37), and brown rice of each of the above-mentioned Karan yZ+381139). A deweighing rate calculation circuit (40
), and a light emitting diode type display (421) that displays the deweighing rate based on the deweighing rate output based on the drive time @(4n, the setting device +37) K. It is configured to display the demolding rate at regular intervals.

In addition, the culm removal roll by the air cylinder (7) +51
Deweighing rate setting device (431) that adjusts the deweighing pressure reference value of +61
and a deweighing rate adjustment circuit (44) that compares the outputs of the respective counters +381 to +391 and the setter (431) and outputs demolding pressure increase and decrease signals, and controls the drive of the air cylinder (7). The electromagnetic solenoid for No. 11 is operated sideways to control the operation based on the rise and fall signals of the circuit (44) via the U1 circuit (46).

The present invention has the above-mentioned tapping structure, and the above-mentioned supply hopper (
1) Weighing rolls (5) and (6) for drying paddy flowing down from
At the same time, rice husks and other straw waste that falls from the flow outlet (11) onto the flow board (12) is removed by a chimney fan (14).
) to the outside of the machine, and the mixed rice of brown rice and paddy that falls from the flow outlet (1j) onto the flow board (12) is collected by the hosonoku- (+6) and the frying shell tube (17). The mixed rice that comes into contact with the reflector (18) from the sample collection shoe 1- (19+) is transferred to the sample gutter (20
) and discharges the mixed rice from the lower end of the gutter (zO) so as to maintain a grain interval (H2), and each grain of mixed rice is sensed almost simultaneously by each grain sensor 121+ +221. The detection time (TI) (T2) and detection voltage (Vl) (V2) of the sensors +211 +221 are
) Counter f381 +391 based on the addition output
Therefore, the number of grains of paddy and brown rice within a certain time m] is counted, and the deweighing rate is displayed via the late weighing rate calculation circuit (40) and the display (42), and the deweighing rate adjustment circuit 1i ( The electromagnetic solenoid (451f) is actuated via the solenoid 441, and the air cylinder (7) is driven and controlled to change the deweighing pressure of the weighing roll +51 (61) to keep the deweighing rate approximately constant.

In addition, by using a reversible electric motor (not shown) in place of the air cylinder +71K and adjusting the gap between the culm removal rolls +51 and +61, it is possible to easily keep the weight and weighing rate approximately constant. detection time (T1) (T2)t or detection voltage (Vl) (
It is also possible to count brown rice and paddy based on the signal obtained by adding either one of V2).

As is clear from the above embodiments, the present invention has a process roll +
51 +6], each of the above-mentioned sensors 211
+221 detects the same grain at almost the same time and adds these outputs (σ), but even when the difference in detected light intensity between brown rice and paddy is small, it is possible to detect the difference between brown rice and paddy due to the difference in light level between them. It is possible to distinguish between the positive and negative types, and the opposite type'! ! One of the same type of multiple sensors 121) of the bamboo transmission type... or (2
2) It can be simply constructed by making the arrangement of this type, and has remarkable effects such as being able to quickly calculate an appropriate deweighing rate and efficiently performing the sliding operation.

[Brief explanation of drawings]

Fig. 1 is an overall sectional view showing an embodiment of the present invention, Fig. 2 is a partial sectional view, Fig. 3 is a front view of the sole, Fig. 4 is a plan view of a sample gutter, and Fig. 5 is a side view of the same cross section. 6 and 7 are cross-sectional end views of the same, FIG. 8 is an output diagram of the grain sensor, and FIG. 9 is a circuit diagram of lucidity and weighing rate control 1. T51 +61...Deculm roll 1211...Reflection type grain sensor 1221...Transmission type grain sensor

Claims (1)

[Claims] A reflective grain sensor 4F having a photoconductive structure and a transmission grain sensor are provided to distinguish and detect brown rice and paddy in the mixed rice flowing down from the scale-removal rolls, and each of the sensors and the transmission grain sensor are provided. A deweighing rate measuring device for a rice huller is characterized in that it is configured to detect the same grain almost simultaneously using sensors and add these outputs.