JPS63158136A - Gluten-removing rate measuring device for rice 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 extracts mixed rice after dehulling using a dehulling roll into a sample gutter, and the sample rice extracted into the sample gutter is poured into the sample gutter. A medium grain sensor distinguishes between brown rice and paddy,
The present invention relates to a dehulling rate measuring device that detects the dehulling rate based on the measurement ratio of the number of brown rice grains and the number of paddy grains in a fixed grain.

"Prior Art" This type of measuring device includes Japanese Patent Laid-Open No. 59-222723 filed by the applicant.

``Problems to be solved by the invention'' With such a method, there is no problem if the dehulling rolls are always supplied with paddy and the grains are always flowing over the sample bridge during the measurement time. but.

Normally, a hulling machine closes the supply shutter when the amount of paddy in the supply tank to the dehulling aar becomes low, and waits until a certain amount of paddy has accumulated again, then opens the shutter and starts the hulling operation. If the amount and emissions are not consistent, the frequency will be extremely high. Therefore, if the shutter closes while the grain sensor is measuring the number of paddy and brown rice, and the object to be detected is interrupted, and the measurement time is kept constant, the number of grains to be measured may be lower than normal and the number of grains may be insufficient. There was a problem in that it was not possible to calculate the demolition rate based on the number of grains, resulting in poor measurement accuracy. Furthermore, even if the removal rate is controlled based on such removal rate, there is a drawback that the removal rate cannot be controlled to an appropriate value.

Therefore, the present invention detects the dehulling rate by sequentially distinguishing sample rice, which is extracted one grain at a time into a sample gutter after dehulling processing, into brown rice and paddy using a grain sensor. In a structure like this,
It is equipped with a paddy supply sensor that detects the supply of paddy to the dehulling rolls, and is configured to perform the dehulling rate detection operation based on the grain sensor only when the paddy supply is detected by the paddy supply sensor.

"Function" According to the present invention, paddy is always normally supplied during the dehulling rate detection operation, and there is no inconvenience such as insufficient number of grains to be measured during the measurement time, and proper measurement can be carried out. It is possible to detect the deboiling rate based on the number of grains, thereby improving measurement accuracy, and when controlling the deboiling rate and floatation rate based on this, the control performance can be maintained stably.

"Example" Hereinafter, an example of the present invention will be described in detail based on the drawings. Figure 1 is a control system diagram of the huller, Figure 2 is an overall sectional view of the huller, and Figure 3 is a partial sectional view of the same.
(2) is a supply hopper installed at the top of the huller 41 (1) to input dried paddy, and (3) is installed at the outlet (2a) of the indicator (2) to open and close the outlet (2a). (4) is an air cylinder for opening and closing the shutter (3); (5) and (6) are the shutters (5) and (6) that open and close the shutter (3);
2a) A pair of dehulling rolls arranged below to separate paddy into brown rice and rice husks, (7) is a variable side dehulling roll (5) supported via a link (8), and a fixed side extrusion. Air cylinders (!3) and (10) are air cylinders for adjusting the demolition pressure (load) of the rolls (5) and (6) that are brought into contact with and separated from the rolls (6), and (!3) and (10) are connected to and separated from the rolls (5) and (6). 8) Provide a lower opening for mixed rice flow (
(11) is a falling chute, (12) is a grain flow board that is attached so that the grain flow angle can be changed freely around the support shaft (13) at the upper end of the inclination, and (14) is a grain flow plate that forms a grain flow from the flow outlet (11). A winnowing fan that sucks and discharges straw waste such as rice husks falling onto the board (12) to the outside of the machine through a sorting air passage (15), and (16) is a mixer of brown rice and paddy that falls from the grain board (12). It is a mixed rice take-out gutter that feeds rice to the grain lifting cylinder (17), and is connected to the flow grain plate (
12) so that the mixed rice is continuously taken out.

In addition, in the figure, (18) is a reflection plate that is an extraction deceleration part that is installed opposite to the lower end of the sloping grain plate (12) and brings the flowing mixed rice into contact; A sample take-out chute (20) is connected to the center of the inclined lower end of the sample gutter (20), which receives the mixed rice flowing down the upper surface of the grain plate (12) and the chute (19) after it hits the reflector plate (18).
1) is a photoconductive grain that irradiates the mixed rice taken out into the sample gutter (20) with detection light, receives the reflected light, and distinguishes the mixed rice into brown rice and paddy based on the difference in the amount of reflected light. The sensor (22) is a sample extraction gutter that feeds the mixed rice detected by the sensor (21) to the frying barrel (17),
The sample rice taken out grain by grain into the V-shaped groove of the sample gutter (20) is distinguished into brown rice and paddy by the sensor (21), and the dehulling roll (5) It is configured to detect the dropout rate in (8).

Note that (23) is a shutter open detection switch that is a paddy supply sensor that detects the opening operation of the shutter (3); It is a paddy tank, and has a shutter (26) that opens and closes the outlet of the tank (24).

In addition, a near compressor (
27) are connected through a pressure control valve (28), and by adjusting the air pressure with the pressure control valve (28), the demolition pressure of the demolition rolls (5) and (6) can be varied as appropriate. are doing.

Further, based on the detection by the sensor (21), the dehulling rate is calculated from the number of paddy and brown rice within a certain sample time, and the dehulling rate is compared with the standard dehulling rate set by the dehulling weight setting device (28). The circuit (30) is equipped with a demolition rate control circuit (30) that performs
0) to the pressure control valve (28) and the demolition rate indicator (31).
The output connection is made to display the demolition rate calculated by the control circuit (30) on the display (31), and when a significant difference occurs between the detected demolition rate and the standard demolition rate, the The pressure control valve (28) is configured to be controlled and operated.

The present embodiment is constructed as described above, and its operation will be explained below with reference to the flowchart of FIG. 4.

Then, when the control is switched to automatic and the reference demolition rate is set with the setting device (2e), the compressor (adjusted to the initial air pressure by the control valve (28) in accordance with this demolition rate) Air from 27) is supplied to the air cylinder (7), and the demolition rolls (5) and (8) are brought into pressure contact. Then shutter (
3) is opened and the hulling work is started, the sensor (21) starts to distinguish between paddy and brown rice in the sample rice extracted on the sample gutter (20), and these discrimination signals The number of paddy and brown rice within a predetermined time (for example, 90 seconds) is measured based on
) is calculated. The calculated demolition rate is digitally displayed on the display (31), and the control circuit (30) compares the demolition rate with the standard demolition rate. When the difference is above a certain level, the air pressure is adjusted to be large or small depending on the difference, thereby varying the demolding pressure of the demolding rolls (5) and (8) in order to maintain a constant demolition rate.

Meanwhile, during measurement work using such a sensor (21).

When the amount of paddy in the supply tank (2) is below a certain level and the shutter (3) is automatically closed, the control circuit (
30) interrupted the measurement of the number of paddy and brown rice and stood by while memorizing the number of paddy and brown rice during the measurement time up to the interruption, and the shutter (3) was opened again and the hulling work was started. The dehulling rate is calculated by adding the number of paddy and brown rice during the remaining measurement time to the data on the number of paddy and brown rice before the interruption. For this reason, there is no inefficiency, such as having to repeatedly correct the air pressure in addition to properly removing the air pressure, which would occur if the control is terminated and restarted from the initial value each time the shutter (3) closes, and the object to be detected is This eliminates problems such as inaccurate dehulling rate calculations due to insufficient grain count when measurement continues even after interruption, and the supply of paddy to the dehulling rolls (508) stops and the hulling operation is interrupted. Even if the system is interrupted, the operation to detect the demolition rate can continue to be performed effectively before the interruption, and the demolition rate can always be accurately detected, making it possible to control the demolition rate with high precision. .

In the above-mentioned embodiment, the measurement operation by the grain sensor (21) is interrupted when the shutter (3) is closed, but for example, as shown in FIG. An electromagnetic switching valve (32) for expanding and contracting the cylinder (7) is interposed between the shutter (3) and the switching valve (3).
2), and when the shutter (3) is closed, the de-wall roll (
5) (8) may be opened after a certain period of time, and the dehulling rolls (5) and (6) may be closed again when the shutter (3) is opened; in this case, during the suspension of the hulling operation. Since the de-wall rolls (5) and (8) also do not come into contact with each other, drying of these rolls (5) and (8) can be prevented and wear can be reduced.

"Effects of the Invention" As is clear from the above examples, the present invention has the following advantages: After the dehulling process, the sample rice extracted to the grains is transferred to the sample gutter (20).
In a structure in which a grain sensor (21) sequentially distinguishes between brown rice and paddy and detects the dehulling rate, the dehulling roll (5
) (El) is provided with a paddy supply sensor (23) that detects the supply of paddy to (El), and only when the paddy supply sensor (23) detects the paddy supply, the grain sensor (21) determines whether the paddy is removed or not. This is because it allows I rate detection.

The dehulling rate is detected only when paddy is normally supplied, and the dehulling rate can be detected based on the appropriate number of measured grains, which improves the measurement accuracy, and the dehulling rate based on this. It has remarkable effects such as being able to maintain stable control.

[Brief explanation of the drawing]

The drawings also show one embodiment of the present invention, and Fig. 1 is a control system diagram of the hulling machine, Fig. 2 is an overall side view of the hulling machine, and Fig. 3 is a general side view of the hulling machine.
The figure is a partial sectional view, and FIG. 4 is a flowchart. (5) (6)... Dehulling roll (20)... Sample gutter (21)... Grain sensor (23)... Paddy supply sensor Applicant: Seirei Kogyo Co., Ltd. Figure 3 Procedural amendment (formality) Mr. Kunio Ogawa, Commissioner of the Patent Office, Indication of the case Relationship to Patent Application No. 291109 of 1986
Application: Col. Address: 428 Ike, Enami, Okayama City, Okayama Prefecture, Agent: 5, Date of amendment order: January 26, 1986, 6: Subject of amendment: Fence of ``Brief explanation of drawings'' in the specification. 7. Contents of the amendment ・ "G desu." on page 10, line 8 of the specification is corrected as follows. ``T, FIG. 5 is an explanatory diagram showing another example of a modified structure.''

Claims (1)

[Claims] The structure is such that the sample rice that is extracted one by one into the sample gutter after the de-dealing process is sequentially differentiated into brown rice and paddy by a grain sensor, and the de-defecting rate is detected, and the supply of paddy to the de-destructing rolls is detected. The paddy supply sensor is equipped with a paddy supply sensor to detect paddy supply, and only when the paddy supply is detected by the paddy supply sensor, the dehulling based on the grain sensor is performed.
A dehulling rate measuring device for a rice huller, characterized in that it is configured to detect the rate.