JPS6323778A - Controller in rice-hulling selector - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a hulling sorting machine that weighs paddy using a weighting mechanism, and then sorts and extracts only brown rice from the scraped rice after desiliconization. The present invention relates to the control device.

[Conventional technology]

A swing-type sorting mechanism was often used to sort brown rice from the scraped rice after desiliconization, but this swing-type sorting mechanism was large and produced large vibrations and noise. Due to these drawbacks, recently, a rotary sorting mechanism has been used in which a brown rice receiving trough is provided in a horizontal rotary sorting cylinder with a number of recesses formed in its inner peripheral surface.

In this rotary sorting mechanism, the fallen rice (a mixture of paddy and brown rice) supplied to the supply side of the rotary sorting cylinder is raised to a height created by the rotation of the rotary sorting cylinder, and then falls to the bottom. As it moves to the discharge side while forming a fluidized bed, the brown rice among the tM fallen rice is stuck in the recess and is lifted up to a high position and then falls, and the brown rice among the IN fallen rice is Utilizing the fact that even if the paddy gets stuck in a recess, it falls from a lower height than the brown rice, the brown rice falling from a higher position is caught in the brown rice receiving trough and taken out. The fluidized bed of washed-out rice in the rotary sorting cylinder must have a certain thickness.In other words, a certain amount of washed-off rice is required in the rotary sorting cylinder.

In other words, the amount of rice that has fallen off inside the rotary sorting cylinder is small;
If the fluidized bed is thin, a phenomenon occurs in which the rice that has fallen off the ground rises due to the rotation of the rotary sorting cylinder, resulting in a decrease in the sorting ability and accuracy of brown rice. When the amount of fluid is large and the fluidized bed is thick,
Since the amount of sloughed rice flowing back from the rotary sorting barrel to the culling mechanism increases, not only does the load for deweighing increase, but also the brown rice in the sloughed rice is often crushed during the process.

Therefore, Japanese Patent Application Laid-Open No. 60-187344 as a prior art discloses a rice hulling sorting machine using a rotary sorting mechanism.
When the amount of dropped rice in the rotary sorting cylinder increases, the rotation speed of the rotary sorting cylinder is increased and the amount of paddy supplied to the shedding mechanism is decreased. It is proposed to control the amount of rice that has fallen off in the rotary sorting cylinder to a substantially constant level by slowing down the rotation of the sorting cylinder and increasing the amount of rice supplied to the removal mechanism.

[Problem that the invention seeks to solve]

However, of the left and right side plates of the brown rice receiving trough in this rotary sorting mechanism, there is a gap between the upper end of the rear plate located on the opposite side to the scraping up side of the fallen rice in the rotary sorting barrel and the rotary sorting barrel. Since there is a gap, as in the prior art, the amount of rice that has fallen off in the rotary sorting cylinder is
In the control to increase the rotational speed of the rotary sorting cylinder, depending on the rotational speed of the rotary sorting cylinder, brown rice may jump over the brown rice receiving gutter through the gap, and the amount of brown rice entering the brown rice receiving gutter decreases. As a result, the sorting ability deteriorated.

The present invention automatically controls the amount of dropped rice in the rotary sorting drum of a rotary sorting mechanism used in a hulling sorter by increasing or decreasing the rotational speed of the rotary sorting drum and the amount of paddy supplied to the f7 mechanism. The purpose of this invention is to prevent the sorting ability from decreasing as described above.

[Means to solve the problem]

In order to achieve this object, the present invention includes a culling mechanism and a rotary sorting mechanism in which a brown rice catcher is provided in a horizontal rotary sorting cylinder with a large number of recesses formed on the inner circumferential surface, and When the amount of rice that has fallen off in the rotary sorting cylinder is large, the rotation speed of the rotary sorting cylinder is increased and the supply of paddy to the culling mechanism is reduced, so that the amount of rice that has fallen off in the rotary sorting cylinder is small. In a hulling sorting machine comprising an in-shell amount control means configured to reduce the rotation of the rotating sorting cylinder and increase the amount of paddy supplied to the culling mechanism, in a brown rice receiving trough in the rotating sorting cylinder, A grain detection sensor is installed on the upper end of the back side plate, which is located on the opposite side (Jll) of the left and right side plates to the sowing side of the fallen rice in the rotary sorting cylinder. In this case, the present invention is configured to include means for reducing the rotational speed of the rotary sorting cylinder in priority to the control by the cylinder quantity control means.

[Action/effect of the invention]

With this configuration, the rotational speed of the rotary sorting cylinder and the amount of paddy supplied to the culling mechanism are increased or decreased depending on the amount of fallen rice in the rotary sorting cylinder. When the amount of brown rice is controlled to be approximately constant, if a large amount of brown rice jumps over the brown rice receiving gutter, the brown rice attempting to jump over the brown rice receiving gutter will end up on the upper edge of the back side plate of the brown rice receiving gutter. Since the rotational speed of the rotary sorting cylinder is reduced by the output of the provided grain sensor in priority to the amount control in the cylinder,
The amount of brown rice that jumps over the brown rice catcher can be reduced or eliminated.

Therefore, according to the present invention, although the accuracy of sorting brown rice is improved by controlling the amount in the barrel, the phenomenon of brown rice jumping over the brown rice receiving gutter is prevented from occurring during the control of the amount in the barrel, and the sorting ability is significantly improved. It has the effect of

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The rice hulling sorting machine includes a horizontally long box-shaped wind sorting device 1, a dehulling mechanism 2 placed on the upper left surface of the wind sorting device 1, and the wind sorting device 1. The entire system is composed of a rotary sorting mechanism 3 placed on the upper right side of the mechanism 1.

The malleability mechanism 2 includes a case 4 with a paddy supply hopper 5;
Inside the case 4, there are a pair of left and right stripping rolls 6.7, a manual opening/closing type shack 8 provided between the two stripping rolls 6.7 and the paddy supply hopper 5, and a paddy supply amount. It is equipped with a control valve 9 and a lead roll 10, and both of the de-culling rolls 6.7 are rotationally driven by a motor 11, one of which is a fixed-position type, while the other one is of a fixed position type. The stripping roll 7 is configured to move toward or away from the one stripping roll 6 by an interval joint mechanism 13 driven by an actuator 12, and the paddy supply amount regulating valve 9 is also moved by the actuator 14. It is configured so that it can be rotated at.

The air selection device 1 includes a pressure fan 15 that sucks the atmosphere;
It consists of a dust exhaust fan 16, a sliding Yonekawa wind return section 17 and a brown rice wind selection section 18 provided between the two fans 15 and 16,
The husked rice wind sorting section 17 is located almost directly below the dehulling mechanism 2, and wind-sorts the chaff from the husks after dehulling, and the husks are removed by this wind selection. ,! a! The rice is sent to the rotary sorting mechanism 3 by a bucket conveyor 21 from the sliding rice gutter 19 with a rotating conveyor 20. Further, the brown rice wind sorting section 18 further performs finishing wind sorting on the brown rice sorted by the rotary sorting mechanism 3, and the finished brown rice after wind sorting is
The brown rice is taken out of the machine by a bucket conveyor 24 from a brown rice gutter 22 with a spiral conveyor 23. Note that both fans 1
5.16 and each spiral conveyor 20.23 and both packet conveyors 21.24 are driven by a motor 25.

On the other hand, the rotary sorting mechanism 3 includes a rotary sorting cylinder 27 horizontally disposed in upper and lower stages in a box-shaped case 26, and the re-rotating sorting cylinder 27 has a pair of left and right sorting cylinders protruding from the inner surface of the box-shaped case 26. Each roller 28.28 is rotatably supported, and these rollers 28.28 are rotated in the direction shown by the arrow in FIG. 3 by a variable rotation speed motor 29 provided in the wind selection device 1. being driven.

This re-rotation sorting cylinder 27 has one end farther from the tax culm mechanism 2 formed as a supply side 27a, and the other end closer to the stripping mechanism 2 formed as a discharge side 27b, and on the inner surface of each of them, A large number of recesses 30 are formed, the size of which allows brown rice to fit into them.

Furthermore, inside the re-rotating sorting cylinder 27, there is a rice receiving trough 31 with an Ia' rotary conveyor 32, whose both ends are connected to the box-shaped case 2.
6, and the brown rice receiving gutter 3.
A fallen rice receiving trough 33 with a spiral conveyor 34 is located on the left side of 1, that is, on the side of scraping up the fallen rice in the rotary sorting cylinder 27.
are arranged side by side. Note that the spiral conveyors 32, 34 in these valleys 31, 33 are connected to the re-rotating sorting cylinder 2.
7 and 7 are rotated at the same time by a motor 29.

The scraped rice sent from the bucket conveyor 21 is
Approximately equal amounts of rice enter the both sliding rice receiving channels 33 through the chute 35, and after being sent by the both sliding rice receiving channels 33, from the supply port 33a at the end thereof, the feed side in the re-rotating sorting cylinder 27 27a, the brown rice that has entered the brown rice receiving trough 31 in the re-rotating sorting cylinder 27 is configured to flow down to the brown rice winding section 18 after joining the chute 36.

Further, a plurality of paddy seeding blades 37 are provided on the inner surface of the discharge side 27b of the re-rotating sorting cylinder 27, and a paddy chute 38 is provided between the paddy feed hopper 5 in the dehulling mechanism 2. The structure is such that the paddy sown by the paddy seeding blades 37 is returned to the paddy supply hopper 5. In addition, a sensor plate 39 for detecting the amount of tM fallen rice in the rotary sorting cylinder 27 is rotatably provided in the re-rotating sorting cylinder 27. An internal cylinder amount sensor 43 is connected to detect the thickness of the flow IJ of the fallen rice in the rotary sorting cylinder 27, that is, 9 of the fallen rice in the rotary sorting cylinder 27, depending on the rotation angle of the plate 39.

Furthermore, a finishing adjustment is provided at the upper end of the left side of the left and right side plates of the brown rice receiving trough 31 in the rotary sorting cylinder 27, that is, on the upper end of the front plate 31a located on the side where the fallen rice is scraped up in the rotary sorting cylinder 27. A plate 40 is attached via a shaft 41 so as to freely rotate in the circumferential direction of the rotary sorting cylinder 27, and each refinishing adjustment plate 40 is configured to be rotated by an actuator 42. ing. Further, among the left and right side plates of the brown rice receiving trough 31, the left side, that is, the rear side plate 31b located on the opposite side from the side where the fallen rice is sown in the rotary sorting cylinder 27 approaches the inner surface of the rotary sorting cylinder 27. A grain sensing sensor 44 such as a piezoelectric element or the like is provided at the upper end.

Reference numeral 45 in the figure indicates the rotational speed of the driving motor 29 of the rotary sorting cylinder 27 and the rotational speed of the rotary sorting cylinder 27 by inputting the signals from the in-shell amount sensor 43 and the grain detection sensor 44. , and the paddy supply tHI control valve 9
This is a control circuit for controlling the amount of paddy supplied and the rotation angle of the finishing adjustment plate 40.

During the desiliconization and sorting work of paddy, when the paddy is supplied to the paddy supply hopper 5 for the deculmation mechanism 2 and the manual shutter 8 is opened, the paddy in the paddy supply hopper 5 is transferred between the desilting rolls 6 and 7. After flowing down and being de-sexed, the husks are removed from the husks of the husks of the de-husked rice in the husks rice sorting section 17 directly below it, and then the husks are removed through the packet conveyor 21, the chute 35, and the slushy rice receiving gutter 33. It is supplied to the supply side 27a in the dual rotary sorting cylinder 27.

In this way, the supply side 27 in the double rotary sorting cylinder 27
The scraped rice supplied to a is transferred toward the discharge side 27b in a state where it forms a fluidized bed that repeats the flow, which is scraped up to a height created by the rotation of the rotary sorting cylinder 27 and then falls to the bottom surface. In the course of this fluid transfer, the brown rice in the sliding rice is lifted up to a relatively high position and falls while it is stuck in the recess 30, and the paddy among the sliding rice falls from a lower position than the brown rice. By doing exercise, brown rice catcher 31
In this case, only brown rice will be placed in the trough 33, and both brown rice and paddy will be placed in the rice receiving trough 33.

The brown rice that has entered the brown rice receiving trough 31 joins the chute 36 and then flows down to the brown rice wind sorting section 18, where it is finished and sorted to remove small rice, and then transferred to the packet conveyor 2.
It is taken out of the aircraft at 4.

On the other hand, the brown rice and paddy that have entered the fallen rice receiving trough 33 are returned to the rotary sorting cylinder 27 together with the fallen rice from the fallen rice sorting section 17, where they are sorted again.

In addition, the fallen rice that moves inside the double rotary sorting cylinder 27 toward its discharge side 27b is removed so that the brown rice enters the brown rice receiving trough 31, and as it approaches the discharge side 27b, it becomes almost only paddy. After being raked up by the paddy sowing blades 37, the paddy is returned to the paddy supply hopper 5 in the deculling mechanism 2 through the paddy chute 38, and the deculling action is performed again.

During this desiliconization sorting work, the rotary sorting cylinder 2
The rotational speed of the driving morph 29 of 7 and the rotational sorting cylinder 2
The rotational speed of 7, the amount of paddy supplied by the paddy supply amount adjusting valve 9, and the rotation angle of the finishing adjustment plate 40 are determined by inputting the signals from the in-shell amount sensor 43 and the grain detection sensor 44, as shown in FIG. Each is controlled based on the flowchart shown in .

That is, in step S1 following the start, it is determined whether or not the brown rice attempting to jump over the brown rice receiving gutter 31 has hit the grain detection sensor 44, and if the brown rice has not hit the grain detection sensor 44, step S1 is performed. S
In step 2, it is determined whether the amount of dropped rice in the rotary sorting cylinder 27 (the amount in the cylinder) is greater than the appropriate value iQ set in advance in the control circuit 45, and if it is greater than the appropriate value Q, Step S3)
At the same time, the paddy supply amount is reduced by closing and rotating the paddy supply amount control valve 9 (step S4), thereby reducing the amount of recirculation from the discharge side 27a of the re-rotating sorting cylinder 27 to the culling mechanism 2. do.

In this case, at the same time as described above, the finish adjustment plate 40 is
Step S5) of opening and turning as shown by the dashed line in the figure may be performed.

On the other hand, in step S2, when the amount in the rotary sorting cylinder 27 is less than the appropriate value Q, the rotational speed of the rotary sorting cylinder 270 is reduced (step S6), and the paddy supply amount regulating valve 9 is opened and rotated. By moving, the amount of paddy supplied is increased (step S7), thereby increasing the amount of dropped rice in the rotary sorting cylinder 27, that is, collecting the dropped rice in the rotating sorting cylinder 27. In this case, at the same time as described above, the finishing adjustment plate 40 may be closed and rotated as shown by the two-dot chain line in FIG. 3 (step S8).

In step S1, if it is determined that the brown rice that is about to jump over the brown rice receiving gutter 31 is hitting the grain detection sensor 44, this means that the amount of brown rice that is jumping over the brown rice receiving gutter 31 has increased. At this time, the rotational speed of the rotary sorting cylinder 27 is reduced in step S9.

Therefore, by performing control through the above-mentioned routine at appropriate time intervals, the rotation speed of the rotary sorting cylinder 27 can be increased when the amount of fallen rice in the rotary sorting cylinder 27 is increased, and the de-flashing mechanism can be used. control to reduce the rotational speed of the rotary sorting cylinder 27 and increase the amount of paddy supplied to the desiliconization mechanism 2 when the amount of paddy supplied to the desiliconizing mechanism 2 decreases and the amount of fallen rice in the rotary sorting cylinder 27 is small. On the other hand, during this control, if the amount of brown rice that jumps over the brown rice receiving gutter becomes large, the rotation speed of the rotary sorting cylinder can be reduced in priority to the above control, so that the amount of brown rice that jumps over the brown rice receiving gutter can be reduced. By reducing or eliminating the amount of brown rice, it is possible to improve the sorting ability.

In addition, when a piezoelectric element is used as the grain sensor 44, this piezoelectric element may be activated by the contact of brown rice with the rear side plate 31b of the brown rice receiving gutter 31, one rotation of the brown rice receiving gutter 31, etc. However, in order to prevent this, the sensor mounting plate 46 should be attached to the rear IIJ plate 31b of the brown rice receiving gutter 31 with anti-vibration rubber 47 or a spring, etc., as shown in FIGS. 6 and 7. The grain detection sensor 44 using the piezoelectric element may be attached to the back surface of the sensor attachment plate 46 via an elastic body.

[Brief explanation of the drawing]

Fig. 1 is a control circuit diagram of an embodiment control device according to the present invention, Fig. 2 is a longitudinal sectional front view of a huller sorting machine, and Fig. 3 is an in-line diagram of an embodiment of the control device according to the present invention.
-III enlarged sectional view, Figure 4 is an enlarged longitudinal sectional front view of the feeding mechanism, Figure 5 is a diagram showing the control flow sheet, Figure 6 is a diagram showing the installation state of the grain detection sensor, Figure 7 is the 6th
■-■ Side view of the figure. l... wind selection device, 2... desiliconization mechanism, 9...
Paddy supply N control valve, 3... Rotary sorting mechanism, 27...
... Rotating sorting cylinder, 30... Concavity, 31... Brown rice receiving gutter, 31b... Rear side plate of brown rice receiving gutter, 40...
・Finish adjustment plate, 38...Sensor plate, 43...
Body amount sensor, 44. 44a... Grain detection sensor, 45... Control circuit.

Claims (1)

[Claims] (1) A removing mechanism and a rotary sorting mechanism in which a brown rice catcher is provided in a sideways rotating sorting cylinder with a large number of recesses formed in the inner circumferential surface, and When the amount of dropped rice is large, the rotation speed of the rotary sorting cylinder is increased and the amount of paddy supplied to the removing mechanism is decreased, and when the amount of dropped rice in the rotary sorting cylinder is small, the rotation of the rotary sorting cylinder is increased. In a hulling sorting machine equipped with an in-shell amount control means configured to reduce the speed and increase the amount of paddy supplied to the dehulling mechanism, one of the left and right side plates of the brown rice receiving trough in the rotary sorting barrel is rotated. A grain detection sensor is provided at the upper end of the rear plate located on the side opposite to the scraping up side of the fallen rice in the barrel, and when the grain detection sensor detects grains, the amount control in the barrel is performed. 1. A control device for a rice hulling sorting machine, characterized in that a means is provided for reducing the rotational speed of a rotary sorting cylinder in priority to control by the means.