JPH0214785A - Detecting and controlling device for grain layer in grain sorter - Google Patents

Abstract

PURPOSE:To improve sorting precision and to improve sorting efficiency by detecting the build-up state of a fluidized bed for a rotary sorting drum and thereby sensing the sorting state and furthermore controlling the sorting state in the rotary sorting drum on the basis thereof. CONSTITUTION:A final rice gutter 16 for receiving unpolished rice is provided in a rotary sorting drum 11 which is formed with many recessed holes on the inner peripheral surface and rotated around a horizontal shaft. A pair of upper and lower detectors 30, 31 for detecting both the upper end side position and the lower end side position of the fluidized bed 32 of grain to be sorted which is formed to the dipping up side being rotated to the upper part from the lower part of this rotary sorting drum 11 are provided. Both the detectors 30, 31 and a controlling means for the fluidized bed of grain to be sorted in the rotary sorting drum 11 are correlatively joined. As a result, improvement of sorting precision and improvement of sorting efficiency can be contrived.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a grain sorting device for sorting mixed rice of paddy and brown rice using a rotating sorting cylinder having a large number of pot holes on its inner circumferential surface. This invention relates to a grain layer detection and control device.

[Prior art]

There is a grain sorting device that sorts a mixed rice of paddy and brown rice by rotating a rotary sorting tube, which has a large number of pot holes on its inner circumferential surface, around a horizontal axis. Inside this rotary sorting cylinder, a finishing rice gutter for receiving brown rice is installed horizontally, and brown rice with short grain length is pumped up high through the pot hole of the rotating sorting cylinder, falls into the finishing rice gutter, and is also pumped up low. Paddy rice with long grain length is sorted as it falls into a rotating sorting tube. When sorting in the pot hole of this rotary sorting tube, the amount of grains to be sorted in the rotary sorting tube is detected by a plate-shaped layer thickness detector, and the thickness of the layer is determined depending on the amount of grains to be sorted. Detected, and based on this detection result,
There is one that increases or decreases the amount of grains to be sorted that is supplied to the rotary sorting tube.

[Problems to be Solved by the Invention] This conventional device detects the flow state based on the layer thickness of grains to be sorted in the rotary sorting cylinder, so it is difficult to maintain a predetermined layer thickness. However, due to differences in the moisture content or variety of grains to be sorted, the fluidized bed is formed with dust raised higher than in the standard state, and unhulled rice is mixed with the brown rice in the finishing rice trough, reducing sorting accuracy. There was a problem.

Therefore, when detecting the flow state of grains to be sorted in a single-rotation sorting tube, this invention does not detect the amount of grains to be sorted based on the layer thickness of the grains to be sorted. By detecting where the upper and lower end positions of the fluidized bed formed by the rotation of the cylinder are on the rotating sorting cylinder, that is, by detecting the rising state of the fluidized bed with respect to the rotating sorting cylinder, the sorting state can be determined. The present invention aims to improve sorting accuracy and sorting efficiency by detecting and controlling the sorting state in the rotary sorting cylinder based on this detection.

[Means to solve the problem]

The technical means of the invention of item 1 for solving such technical problems is to receive brown rice in a rotary sorting cylinder 11 which has a large number of pot holes in its inner circumferential surface and rotates around a horizontal axis. A rice gutter 16 is installed, and a fluidized bed 3 of grains to be sorted is formed on the pumping side of the rotary sorting cylinder 11, which rotates from the bottom to the top.
The grain fluidized bed detection device of the grain sorting device is configured to include a pair of upper and lower detectors 30 and 31 for detecting the upper end side position and the lower end side position of item 2, and the technology of the invention of item 2 The means is to install a finishing rice gutter 16 for receiving brown rice in a rotary sorting cylinder 11 which has a large number of pot holes on its inner circumferential surface and rotates about a horizontal axis, and to rotate the rotary sorting cylinder 11 from the bottom to the top. A pair of upper and lower detection tools 30 and 31 are provided to detect the upper and lower end positions of the fluidized bed 32 of the grains to be sorted formed on the pumping side. A grain fluidized bed control device for a grain sorting device is configured in such a manner that a fluidized bed regulating means for sorted grains is connected in a related manner.

[Operation and effect of the invention]

In the invention of item 1, during the sorting work of mixed rice in the rotary sorting tube 11, brown rice with a short grain length that is pumped up high into the pot hole of the rotary sorting tube 11 among the grains to be sorted is removed from the finished rice above. The long grain rice that falls into @16 and is drawn up low falls into the rotary sorting cylinder 11 and is sorted.

During this sorting operation, when detecting the fluid sorting state of the grains to be sorted in the rotary sorting tube 11, the rotary sorting tube 11
Since the upper and lower end positions of the fluidized bed 32 of the grains to be sorted formed on the pumping side rotating from the bottom to the top are detected by a pair of upper and lower detectors 30.31,
By accurately detecting the position of the grains to be sorted with respect to the rotating sorting tube 11 of the fluidized bed, that is, by detecting the lower end position of the rising side of the fluidized bed 32, it is possible to detect unhulled rice among the grains being pumped up through the pot hole. It is possible to know the limit position at which brown rice does not enter the upper finished rice gutter 16, and by detecting the lower end position of the rising side of the fluidized bed 32, it is possible to detect the position where brown rice fits well into the pot hole. , it is possible to accurately detect the sorting accuracy and sorting efficiency during sorting work.

In addition, in the invention of item 2, the upper and lower positions of the fluidized bed 32 of the grains to be sorted formed on the pumping side rotating from the bottom to the top of the rotary sorting cylinder 11 are detected by a pair of upper and lower ends. Detection by means 30 and 31, and based on the detection result, a means for regulating the fluidized bed of grains to be sorted in the rotary sorting cylinder 11, for example, adjusting the supply amount of grains to be sorted to increase or decrease; Alternatively, since the rotation speed of the rotary sorting tube 11 is adjusted, the position of the lower end of the rising side of the fluidized bed 32 is prevented from shifting upward or downward from the standard position, and the flow of unhulled rice to the finishing rice gutter 16 in the upper part is prevented. It can prevent pumping up and improve sorting accuracy, and by detecting the lower end position of the rising side of the fluidized bed, it prevents the lower end position of the rising side of the fluidized bed from deviation from the standard position. do,
It is possible to maintain a state in which the brown rice fits well into the pot hole of the rotary sorting cylinder 11, thereby improving the sorting efficiency.

〔Example〕

Embodiments of the invention shown in the drawings will be described below.

First, the configuration of the embodiment will be explained. 1 is a paddy hopper 2. A pair of lecture rolls 3,
It is made up of 3rd grade. 4 is a sliding rice wind selection path, in which the separating air generated by the suction fan 5 in front of the rice sloughing section 1
The rice husks are discharged from the machine through a suction fan 5 through a dust exhaust pipe 6, and the mixed rice of brown rice and paddy is dropped and supplied to a droplet receiving trough 7 below. The mixed rice that has fallen into the fallen rice receiving gutter 7 is fried by the mixed rice lifting machine 8 into the mixed rice hopper 9, and the fried mixed rice is sent to the feed gutter 1 on the rotary sorting tube 11 side.
It is configured to be sent to the starting end of No. 4.

Reference numeral 10 denotes a sorting case, and inside this sorting case 10, there is a rotary sorting cylinder 11 having a large number of pot holes on its inner circumferential surface.
In order to be able to rotate around the horizontal axis, the feed side end (right side in Figure 1) which is the sorting start side and the discharge side end (left side in Figure 1) which is the sorting end side are rotated by drive rollers 12, 12. freely supported. A supply gutter 14 with a feed helix 13 and a finishing rice gutter 16 with a finished rice helix 15 are horizontally suspended within the rotary sorting cylinder 11.

When arranging the supply gutter 14 and the finished rice gutter 16 inside the rotary sorting cylinder 11, the supply gutter 14 is placed on the pumping side rotating from the bottom to the top of the rotary sorting cylinder 11, as shown in FIG. The finished rice gutter 16 is arranged on the side of the rotary sorting cylinder 11 that rotates from above to below, and the mixed rice drawn up low by the pot hole of the rotary sorting cylinder 11 falls into the supply gutter 14 and is supplied by the supply helix 13. The rice is conveyed to the terminal end of the gutter 14, and the feed gutter 14 also functions as a mixed rice receiving gutter.

The discharge side end of the finishing rice trough 16 is connected to the finishing rice receiving trough 19 via the finishing rice flow lower tube 17 and the finishing rice grain board 18, and the finished rice is transferred from the finishing rice grain board 18 to the finishing rice receiving trough 19. The brown rice that has been wind-selected while falling into the receiving trough 19 and has flowed down to the finished rice receiving trough 19 is taken out of the machine by a finished rice lifting machine 20.

Below the sorting end side of the rotary sorting tube 11, there is a paddy receiver fI! 2
1 is disposed, and the grains mainly composed of brown rice after sorting and falling into the paddy receiving machine 21 are configured so that they are returned to the return paddy hopper 23 of the hulling section 1 by the paddy lifting machine 22. .

Further, from the end of the sorting case 10 on the side of the scraping section 1, there are the shaft end 15a of the finished rice helix 15, the shaft end 13a of the supply helix 13, and the drive roller shafts 24, 24 that drive the drive rollers 12, 12. Shaft end 24a.

24a are extended to the side of the removal section 1, and pulleys 25, 25. Install these pulleys 25,
25. The transmission belt 26 is hooked to and rotated. This pulley 25, 25. Among these, the pulley 25 attached to the shaft end 15a of the finishing helix 15 is configured as a continuously variable speed pulley 25a that expands and contracts with a spring, and as the tension pulley 28 of the tension arm 27 moves, The effective diameter of the continuously variable speed pulley 25a is adjusted, and the rotation speed of the rotary sorting cylinder 11 is adjusted to increase or decrease by the transmission belt slippage.

Incidentally, reference numeral 29 shown in FIG. 1 is an inclination adjusting means for adjusting the inclination of the rotary sorting tube 11 by vertically moving the rear portion of the rotary sorting tube 11 in the longitudinal direction, that is, the right side portion in FIG.

Reference numerals 30 and 31 denote a ball detector and a lower detector that detect the upper end position and lower end position of the grains to be sorted in the fluidized bed formed on the pumping side that rotates from the bottom to the top inside the rotary sorting cylinder 11. . As shown in FIG. 2, the upper detector 30 is placed in the pot hole of the rotary sorting tube 11 at a position directly beside the pumping side of the rotary sorting tube 11, that is, at a position corresponding to the upper end of the fluidized bed 32 in the standard state. Finishing rice gutter 15 with stuck rice stuck above
The upper detector 30 is provided at a position that is far enough to fall before reaching the upper end of the detector 30, and the upper detector 30 is composed of a light emitting element and a receiving element. Further, the lower detector 31 is located directly below the rotary sorting cylinder 11, that is, at a position corresponding to the lower end of the fluidized bed 32 in the standard state.

Open! II C1114Rg 11/7'l Deer bI-
'* 輛－Q Q ＋－７P→S I The brown rice in the lower part of the embroidery part is provided at a position that fits well into the pot hole of the rotary sorting tube 11, and the detector 31 also emits light. It consists of an element and a receiving element.

Moreover, the detector 30. The detection information detected by the lower detector 31 is transmitted to the amplifier 33, 33 and the input interface 34.
．． 34, the comparison control unit 3 has a built-in CPU.
5. Further, a forward rotation drive circuit 37 and a reverse rotation drive circuit 38 are connected to the comparison control section 35 via output interfaces 36 , 36 . Adjustable and current setting reference information in the comparison control section 35 and the upper detector 30. The detection information of the lower detector 31 is compared, and the following control is performed.

- When the main detector 30 does not detect grains, the upper detector 31 detects grains, and the fluidized bed 32 is in a normal state, no drive signal is output from the comparison control section 35 to the control section; The rotary sorting tube 11 rotates at the same rotation speed.

■When the upper detector 30 detects grains and the upper detector 31 does not detect grains, the flow M32 rises too high for the @S quasi-state, and the paddy rice stuck in the pot hole is pumped up high. The brown rice drips and falls into the finishing rice gutter 16, reducing the sorting accuracy, and the brown rice does not fit properly into the pot hole. In such a case, the setting reference information and the detection information are compared, and the deceleration drive signal is sent from the comparison control section 35 to the forward rotation drive circuit 3.
7, the rotation control motor 39 that adjusts and controls the rotation speed of the rotary sorting cylinder 11 is driven to rotate normally, and the transmission gear 40.
The effective diameter of the continuously variable speed pulley 25a is reduced through the adjustment bolt 41, and the transmission speed of the transmission belt 26 is adjusted to decrease.

■When the upper detector 30 does not detect grains and the upper detector 31 detects grains, the rising state of the fluidized bed 32 is less than the standard state, and the brown rice stuck in the pot hole is high. The brown rice cannot be pumped up, and the amount of brown rice falling into the finishing rice gutter 16 is small, resulting in an insufficient amount of brown rice being pumped up. In such a case, the setting standard information and the detection information are compared, and a speed increasing drive signal is output from the comparison control section 35 to the reversing drive circuit 38 to control the rotation speed of the rotary sorting cylinder 11. When the motor 39 is driven in the reverse direction, the effective diameter of the continuously variable pulley 25a is expanded via the gear 40° adjusting bolt 41, thereby increasing the transmission speed of the transmission belt 26.

■When both the upper detector 30 and the upper detector 31 detect grains, the amount of grains to be sorted is larger than the standard state, and unhulled rice falls into the finishing rice gutter 16 and is mixed, reducing the sorting accuracy. state. In such a case, the setting standard information and the detection information are compared, and an adjustment signal is output from the comparison control unit 35 to the paddy supply amount control motor (not shown) of the paddy supply amount adjustment valve 42 to control the paddy supply. Adjust the amount control valve 42 to the decreasing side.

In addition, when setting the setting standard information in the comparison control unit 35, it may be set artificially and freely, and for example, the grain length of the grain to be sorted.

The water content may be detected by a detector and automatically set based on the detection result.

Further, the rotation speed adjustment means of the rotary sorting cylinder 11 is
Open bond: Stomach U+I 11 Koeishi Shirokomorona
2 may be adjusted and controlled in relation to each other.

Next, the operation of the embodiment will be explained. When carrying out hulling work, raw rice is supplied to the rice hopper 2, and each rotating part of the rice hulling machine is driven. Then, the paddy rolls 3, 3 are removed from the paddy hopper 2.
The paddy supplied to the machine is subjected to a dehulling action, the fallen rice is wind-selected in a lower washed-off rice wind sorting path 4, and the rice husks are discharged from the dust exhaust pipe 6 to the outside of the machine. The mixed rice of brown rice and paddy is dropped and supplied to the sliding rice receiving trough 7, fried by the mixed rice grain lifting machine 8 to the mixed rice hopper 9, and then fed to the starting end side of the supply trough 14 on the rotary sorting cylinder 11 side. ,
Next, the rotating sorting cylinder 1 is
1 is supplied to the supply side end of 1.

Next, the mixed rice is pumped up through the pot hole of the rotary sorting tube 11 that is rotating clockwise, and the brown rice with short grain length is pumped up high and becomes finished rice fiI! ! Falling at 16. In addition, the mixed rice of paddy and some brown rice that has been pumped low is
Fall into the supply gutter 14 and be sorted +I Ushishi 4j: Eyebrow 1/II-Tom]
+μ↓The feed helix 13 supplies the feed 1a14 from the conveyance terminal end into the rotary sorting tube 11 again, where it is re-sorted.

Further, the finished rice that has fallen into the finishing rice gutter 16 is conveyed to the finishing rice flow lower cylinder 17 by the finishing rice helix 15, and is transferred to the finishing rice flow grain plate 18.
While falling into the finished rice receiving trough 19, the rice is sorted by a sorting wind and taken out of the machine by the finished rice lifting machine 20.

The grains, mainly consisting of paddy, sent to the sorting end of the rotary sorting cylinder 11 fall into the lower paddy receiving trough 21 and are sent to the reduced paddy hopper 23 of the threshing section 1 by the paddy lifting machine 22. Restored 1. She is made to take off her clothes again.

As mentioned above, during the sorting work of mixed rice, the brown rice that has been pumped up high through the pot hole of the rotary sorting tube 11 falls into the finishing rice gutter 16, and the paddy rice that has been pumped up low is dropped into the pot hole of the rotary sorting tube 1.
During such sorting, the upper detector 30 does not detect the grains, and the upper detector 31 detects the grains. When it is detected that the fluidized bed of grains to be sorted is in a normal distribution state, a drive signal is output from the comparison control section 35 to the control section;
The rotary sorting tube 11 continues its work while maintaining its rotational state, and when the main detector 30 detects grains and the upper detector 31 does not detect grains, the grains to be sorted are Since the fluidized bed rises too high compared to the standard state, the number of rotations of the rotary sorting cylinder 11 is reduced to restore the distribution of the fluidized bed to the normal state. When no grains are detected and the upper detector 31 detects grains, the fluidized bed rises less than the standard state, so
The number of rotations of the rotary sorting cylinder 11 is increased to restore the normal distribution state of the fluidized bed. The paddy supply control valve 42 is adjusted to the decreasing side to restore the normal amount of grains to be sorted before carrying out the hulling and sorting work.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a cutaway side view, FIG. 2 is a cutaway rear view, and FIG. 3 is a circuit diagram. Explanation of symbols 3a Slipping section Scraping roll suction fan sliding rice receiving gutter sorting case 1 Drive roller 1 Shaft end 1 Finished rice helix 1 Finished rice gutter 1 Finished rice flow grain board 1 Finished rice lifting machine 2 Paddy fried grain Machine 2 Drive roller shaft 2 Pulley 2 Tension arm Tension arm inclination adjustment means 30 Upper detector 32 Increased IIM paddy hopper Dropped rice wind sorting path Dust exhaust tube Mixed rice grain lifting machine Rotating sorting tube supply helical supply gutter shaft end finish Rice stream lower tube finishing rice receiving trough paddy receiving trough reduction paddy hopper shaft end transmission belt top detector fluidized bed input interface comparison control device output interface forward rotation drive circuit rotation speed control motor adjustment bolt 38 reverse drive circuit 40 speed change gear 42 paddy supply quantity control valve

Claims (1)

[Scope of Claims] [1] Finished rice trough 16 for receiving brown rice in a rotary sorting cylinder 11 which has a large number of pot holes in its inner peripheral surface and rotates around a horizontal axis.
A pair of upper and lower detectors 3 detect the upper and lower end positions of the fluidized bed 32 of the grains to be sorted, which is formed on the pumping side of the rotary sorting tube 11 that rotates from the bottom to the top.
A grain fluidized bed detection device for a grain sorting device consisting of 0.0 and 31. [2] Finished rice trough 16 that receives brown rice in a rotary sorting cylinder 11 that has a large number of pot holes on its inner circumferential surface and rotates around a horizontal axis.
A pair of upper and lower detection tools 3 are installed to detect the upper and lower end positions of the fluidized bed 32 of the grains to be sorted, which is formed on the pumping side of the rotary sorting cylinder 11 that rotates from the bottom to the top.
0 and 31 are provided, and these detection tools 30 and 31 and the rotary sorting cylinder 1
1. A grain fluidized bed control device for a grain sorting device, characterized in that the grain fluidized bed control device for a grain sorting device is associated with fluidized bed regulating means for grains to be sorted.