JPH0751160Y2 - Paddy sorting device - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a hulling and sorting device in which a fixed roll and a moving roll are provided in a pair, and the paddy is supplied between the two rolls to remove wind and select the wind. is there.

(B) Conventional technology Conventionally, in a hulling machine, there is a technology configuration that detects a load variation of a motor that drives a roll and adjusts a roll gap to an appropriate value according to the load variation, in Japanese Patent Publication No. 51-1620. It is publicly known as described in JP-A-58-146450.

However, as described in this publication, even if the grains supplied between the rolls are different grains such as paddy or wheat / brown rice, the load fluctuation of the drive motor is always detected regardless of the grain size. The roll gap is adjusted.

(C) Problems to be Solved by the Invention As described above, the conventional hulling machine always adjusts the roll gap in accordance with the load fluctuation of the drive motor regardless of what is supplied between the rolls. Even if different grains such as brown rice are supplied, they are removed and the rolls are uselessly worn. At the same time, especially brown rice causes damage grains such as skin rubbing.

Therefore, in the present invention, for example, in the case where wheat, brown rice, or the like is wind-selected by a hulling machine to remove dust and finish-sort, the machine itself discriminates this and does not remove only wind-selection. It was devised for the purpose of solving the problems in the above-mentioned conventional ones.

(D) Means for Solving the Problems In order to achieve the object described in the preceding paragraph, the present invention is a paddy in which a fixed roll and a moving roll are installed in opposition, and paddy is supplied between the fixed rolls and the moving rolls to remove the wind. The slide sorting device has the configuration described below.

That is, the color sensor for determining what is supplied to the roll, the control motor for adjusting the roll gap, and the current measuring device for measuring the load current value of the drive motor are provided, and the color sensor, the control motor and the current measuring device are provided. Is electrically connected via a control circuit, and only when the color sensor detects paddy, the measured current value of the drive motor and the current value of the drive motor adjusted to the proper roll gap input to the control circuit. The roll gap is adjusted via the control motor based on the difference between the two current values.When the color sensor detects different grains other than the paddy, the roll gap is not adjusted and the roll gap is not removed. The configuration is such that it is opened to the position.

(E) Action In this paddy sorting device, it is detected by the color sensor whether the material supplied between the fixed roll and the moving roll is paddy or different grains such as wheat and brown rice, If the detected one is paddy, the load current value of the drive motor is measured, and the set current value that is previously input and stored in the control circuit and is set in accordance with the proper roll gap of the drive motor is compared. If the two current values are different, the control circuit issues a command to the control motor to adjust the roll gap, and the measured current value of the drive motor is corrected so that it matches the set current value. The rate is controlled.

Further, when the color sensor detects different kinds of grains other than paddy, the control for adjusting the width of the roll gap is not performed and the roll gap is opened to the non-releasing position.

(F) Example Hereinafter, a hulling and sorting apparatus according to the present invention will be described with reference to the accompanying drawings.

First, in FIG. 1, (1) is a fixed roll, and (2) is a movable roll opposite to this, which is rockably supported by an arm (4), and this arm (4) of the control motor screw shaft (5) is supported.
When the control motor (m) is actuated, the roll gap is adjusted by moving the control motor (m) toward or away from the fixed roll (1).

(6) is a funnel containing the shell grains, (7) is this funnel (6)
And a roll (1) (2) between the rolls (1) and (2), a suction fan (8) is connected to the lower side of the rolls (1) and (2) and a suction sorting air passage (9) to blow off the debris. The suction / selection wind to be selected is generated, and (M) is a drive motor through belts (10) and (11) through a fixed roll (1), a moving roll (2), a suction fan (8), and a feeding roll (12). Is driven to rotate.

And (S) is a photoelectric color sensor, which is a funnel (6).
It is attached to the bottom side of the funnel (6) and the shell grains in the funnel (6) are irradiated with the detection light and the reflected light is received, and the shell grains are different grains such as paddy or wheat and brown rice due to the difference in the reflected light amount. It is to determine whether there is.

Reference numeral (13) is a control box containing a control circuit (3), which is incorporated in the color sensor (S) and the control circuit (3) to measure a current value of the drive motor (M) under load. The control circuit (3)
When the shells are stored in the funnel (6), the color sensor (S) detects whether the shell grains are paddy or wheat / brown rice, and the paddy is electrically connected via When detected, the load current value of the drive motor (M) is measured, and this measured current value is compared with the preset current value of the drive motor (M) that is input and stored in advance in the control circuit (3). When they are different, the control circuit (3) issues a command to the control motor (m) to adjust the roll gap to control the removal rate, and when the wheat and brown rice are detected, the control circuit (3) is detected. A command for "opening" the roll gap is issued from and the moving roll (2) is opened.

Incidentally, (14) is a shutter for opening and closing the supply path (7).

Further, (S1) is a capacitance type proximity switch, one side of the supply path (7) is attached to the alligator, and when the pad of the color sensor (S) is detected, the shutter (14) is opened and the funnel (6) is opened. This is detected by the supply of paddy of the rice pad and turned on, and it is turned off when the shutter (14) is closed.
Regarding the relationship between the paddy detection by 1) and the measurement of the current value when the drive motor (M) is loaded, as shown in Fig. 3, the load current value rises a little at the start of the removal (P) and is averaged thereafter. The current value (Q) when measuring the current value of the drive motor (M) is delayed from the time (0) when the proximity switch (S1) is detected by a certain time (T).

Therefore, as shown in the flowchart of FIG. 2, the color sensor (S) determines whether the shell grains contained in the funnel (6) are paddy or wheat / brown rice, and if paddy is detected, the shutter is released. (14) By opening, the proximity switch (S1) detects the paddy supplied from the funnel (6) and turns it on to start the removal, and a certain time (T) is delayed from (0) when the proximity switch (S1) is detected. The current value of the drive motor (M) is measured, and the measured current value is compared with the preset current value of the drive motor (M) that has been input and stored in advance, and both current values are different by the comparison. If so, the control circuit (3)
Then, a command is issued from the control motor (m) to adjust the roll gap, and the measured current value of the drive motor (M) is corrected so as to match the set current value, and the removal rate is controlled.

If wheat or brown rice is detected by the color sensor (S), the shutter (14) is opened and the rolls (1) and (2) are opened.
However, at this time, the control circuit (3) has already issued a command to the control motor (m) to open the roll gap and pass between the rolls (1) and (2) without passing through the suction sorting air passage (9). It will be selected and finished.

In addition, in order to make the capacity of the funnel (6) effective, the diffusion plates (16a) (16b) (16c) of shell grains supplied from the charging cylinder (15) are provided in several stages in the funnel (6). The diffuser plates (16a) (16b) (16c) have a frustoconical shape, and the hole diameters (D1) (D2) (D3) of the central part are increasing from the upper to the middle and lower stages. Gradually becomes smaller,
Further, the inclination angles are sequentially increased as (α1) (α2) (α3), and the inner diameter (D) of the charging cylinder (15) is made larger than the hole diameter (D1) of the upper diffusion plate (16a). There is.

The hulling / sorting device according to the present invention seems to be small by itself from the exemplary drawings, but it can be used from a small one including a test huller to a large hulling / sorting device such as a hulling plant.

(G) Effect of the Invention As is clear from the above description, the present invention is a paddy sorting device in which a fixed roll and a moving roll are provided in a pair, and the paddy is supplied between the fixed roll and the roll to remove the wind. A color sensor for determining what is supplied to the motor, a control motor for adjusting the roll gap, and a current measuring device for measuring the load current value of the drive motor. The color sensor, the control motor, and the current measuring device are control circuits. Electrically connected via, and only when the color sensor detects the paddy, compare the measured current value of the drive motor with the current value of the drive motor that is input to the control circuit and is adjusted to the proper roll gap. , The roll gap is adjusted via the control motor based on the difference between the two current values, and when the color sensor detects different grains other than the paddy, the roll gap width control is not performed and the roll gap is not adjusted. Since it is configured to open to the position, it is detected by the color sensor whether the material supplied to the roll is paddy or different grains such as wheat and brown rice, and the detected one is paddy. If so, the load current value of the drive motor is measured, and it is compared with the set current value that is input and stored in the control circuit in advance and is adjusted to the proper roll gap of the drive motor. When the control circuit issues a command to the control motor to adjust the roll gap, the removal rate is controlled.When the color sensor detects different grains such as wheat and brown rice, the roll gap is adjusted. The control to open and close the roll gap to the non-releasing position is not performed, so it is possible to use an artificial operation when, for example, barley, brown rice, etc. are ventilated by a huller to remove dust and finish sorting. Without In addition, the machine itself discriminates this and performs only wind selection without removing it, and not only does the roll not wear unnecessarily, but also in brown rice there is no damage grain such as skin rubbing. is there.

[Brief description of drawings]

1 is a longitudinal side view of a hulling / sorting device, FIG. 2 is a flow chart, and FIG. 3 is a hull detection by a proximity switch and a current of a drive motor. It is a figure for explaining a relation with measurement. 1 ... Fixed roll, 2 ... Moving roll S ... Color sensor, m ... Control motor M ... Drive motor, 3 ... Control circuit

Claims (1)

[Scope of utility model registration request] 1. A roll (1) in a paddy-sorting device in which a fixed roll (1) and a moving roll (2) are provided in a pair, and paddy is supplied between the rolls (1) and (2) to remove wind and select wind. ) (2)
A color sensor (S) for determining what is supplied to the motor, a control motor (m) for adjusting the roll gap, and a current measuring device for measuring the load current value of the drive motor (M). S), the control motor (m) and the current measuring device are electrically connected through the control circuit (3), and the current measurement value of the drive motor (M) is detected only when the color sensor (S) detects the paddy. And the current value of the drive motor (M) matched to the proper roll gap input to the control circuit (3) are compared, and the roll gap is set via the control motor (m) based on the difference between the two current values. When the color sensor (S) detects different kinds of grains other than paddy, the roll gap is not adjusted, and the roll gap is opened to the non-releasing position. .