JPH01189377A - Device for detecting thickness of grain layer in grain sorter - Google Patents

Abstract

PURPOSE:To prevent the hindrance of flowing by setting a plate for detecting the thickness of a layer in contact with the top of a fluidized layer of grains to be sorted in a direction along the inner surface of a rotating sorting tube. CONSTITUTION:Sorted unhulled rice sent to the discharge end of a rotating sorting tube 11 enters a scooping tube 21, is scooped by the tube 21, dropped on an upper chute 22 for restoring unhulled rice, restored to a hulling part 1 and hulled. Even when the amt. of grains to be sorted increases abnormally, a plate 24 for detecting the thickness of a layer moves up and down in accordance with the vertical movement of a fluidized layer of grains to be sorted while in contact with the top of the layer formed by the rotation of the tube 11 and fluidized while in contact with the inner surface of the tube 11, so the plate 24 enables accurate detection.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention is implemented in a hulling machine that sorts mixed rice of paddy and brown rice using a rotating sorting tube that has a large number of pot holes on its inner circumferential surface. can do.

[Prior Art] A grain sorting device that sorts mixed rice of paddy and brown rice by rotating a rotary sorting tube having a large number of pot holes on its inner circumferential surface around a horizontal axis, and It is equipped with a plate-shaped layer thickness detector that detects the amount of grains to be sorted, and the layer thickness detector detects the grains to be sorted while controlling the amount of rice that has fallen off at the shedding part. Japanese Patent Laid-Open No. 60-406545 discloses a method that performs sorting work.

[Problems to be Solved by the Invention] In the device disclosed in JP-A-60-106545, a plate-shaped layer thickness detecting device is disposed below the grain receiving gutter, and one rotation of the sorting cylinder is Since the upper surface is in contact with the lower part of the fluidized bed of grains to be sorted that flow due to rotation, it is possible to detect the amount of grains to be sorted that increases or decreases under normal conditions, but if the amount of grains to be sorted exceeds the normal state and is abnormal. If the amount of grains to be sorted increases, the amount detected by the layer thickness detector will be smaller than the amount of grains to be sorted, and the supply amount of grains to be sorted to the rotary sorting tube will be insufficiently controlled, and in the worst case, Separation was sometimes impossible due to grain clogging. In addition, in this conventional device, since the upper surface contacts the lower part of the fluidized bed of the grains to be sorted that flow due to the rotation of the rotary sorting cylinder, the grains may sink into the grains to be sorted.
Accurate detection was not possible, and the grains to be sorted could be obstructed from flowing from the supply side to the discharge side of the rotary sorting cylinder.

Therefore, the present invention solves these problems and accurately detects the amount of grains to be sorted even when the amount of grains to be sorted in the rotary sorting cylinder increases abnormally beyond the normal state. The present invention aims to realize a layer thickness detecting tool that can be used for sorting and does not impede the flow of grains to be sorted from the supply side to the discharge side.

[Means to solve the problem]

The technical means of the present invention for solving such technical problems is that grains are picked up in a rotary sorting tube 11 which has a large number of pot holes in its inner circumferential surface and rotates around a horizontal axis. In a grain sorting device equipped with a grain receiving trough 16 for receiving grains, the grains come into contact with the upper end of a fluidized bed of grains to be sorted generated by the rotation of the rotary sorting tube 11 and are moved up and down in the direction along the inner circumferential surface of the rotary sorting tube 11. The grain layer thickness detection device of the grain sorting device is characterized in that a movable layer thickness detection plate 24 is provided.

[Function and effect of the invention]

During sorting work, even if the amount of grains to be sorted in the rotary sorting tube 11 increases or decreases under normal conditions, or if it increases more than the above, it will occur due to the rotation of the rotary sorting tube 11, and the amount of grains to be sorted in the rotary sorting tube 11 will change. The layer thickness detection plate 24 moves up and down in response to the up and down movement of the fluidized bed that occurs while in contact with the upper end portion of the fluidized bed of grains to be sorted, which flows while contacting the inner peripheral surface of the plate.
It moves up and down without sinking into the fluidized bed of grains to be sorted, and can accurately detect the amount of grains to be sorted.

〔Example〕

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

First, the structure of the embodiment will be described. Reference numeral 1 denotes a husking section, and this husking section 1 is connected to a paddy tank 2. A pair of undressing rolls 3
, 3 etc. Reference numeral 4 denotes a sloughed rice wind sorting path, in which the sloughed rice from the shedding section 1 is sorted by the sorting wind generated by the suction fan 5 in front, and the rice husks are passed from the suction fan 5 to the dust exhaust pipe 6 and then taken out of the machine. The mixed rice of brown rice and paddy falls into the sliding rice receiving trough 7 below, and the mixed rice that has fallen into the sliding rice receiving trough 7 is passed through the mixed rice hopper 9 by the mixed rice lifting machine 8. The mixed rice is configured to be conveyed to the starting end of the supply gutter 14 which also serves as a receiving gutter.

Reference numeral 10 denotes a sorting case, and inside this sorting case lo, there is a supply side end (Fig. on the right)
and the discharge side end (left side in Figure 3) of the drive roller
It is rotatably supported by 12, 12. Inside this rotary sorting cylinder 11, a supply @ 14 with a supply helix 13 and a finishing rice trough 16 with a finishing rice helix 15 are installed horizontally.

In 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 @ 116 is placed on the side of the rotary sorting tube 11 that rotates from the top to the bottom, and the mixed rice drawn up through the pot hole of the rotary sorting tube 11 falls into the supply gutter 14;
The rice is transferred to the terminal end of the supply gutter 14 by the supply helix 13, 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 cylinder 17 and the finishing rice grain plate 18, and the finished rice is transferred to the finishing rice flow lower cylinder 17 and the finishing rice grain plate. The brown rice that is wind-selected while falling from the plate 18 to the finished rice receiving gutter 19 and flows down to the finished rice barley M19 is transferred to the finished rice grain lifting machine 20.
It is taken out of the machine via the

A pumping cylinder 21 is connected to the discharge side end of the rotary sorting cylinder 11. 22 is the paddy reduction gutter, and this paddy reduction @ 2
The upper end portion of 2 extends to a position below the pumping of the pumping cylinder 21 on the side of the rotary sorting cylinder 11, and has a function of returning the paddy pumped upward by the pumping cylinder 21 to the husking part 1.

The lower part of the front end of the sorting case 10, that is, the lower part on the side of the shedding part 1,
It is pivotally supported by a horizontal shaft, and supports the rear part of the sorting case 10 and the rotary sorting tube 11 so as to be rotatable in the vertical direction.
is an inclination adjusting means for adjusting the inclination of the sorting case 10.

24 is located on the lateral side of the supply gutter 14.

The rotary sorting cylinder 11 is in contact with the upper end of the fluidized bed of grains to be sorted.
The layer thickness detection plate 24 is a plate-shaped layer thickness detection plate that is displaced in the rotation direction or counter-rotation direction on the inner circumferential surface of the plate. is attached to the rotary sorting tube 11 via an arm 26, and moves up and down while contacting the upper end of the fluidized bed of grains to be sorted along the inner circumferential surface of the rotary sorting tube 11. It detects increases and decreases in quantity. This layer thickness detection plate 24 is connected to a layer thickness detection shaft 25. It is interlocked and connected to a paddy supply control valve 28 on the side of the shedding section 1 via an interlocking member 27.

Note that the layer thickness detection plate of this embodiment has a long hole 24a in the middle part.
However, the elongated hole 24a may not be formed and the plate-like structure may be used, or it may be a net-like structure through which not many grains to be sorted pass through.

In addition, the rotation state of the one-layer thickness detection plate 24 is detected by an angle detector 30 such as a potentiometer, and the paddy supply control valve 28 is electrically detected.
may be controlled.

Next, the operation of the embodiment will be explained. When carrying out the hulling operation, the rice grains are supplied to the rice tank 2, and each rotating part of the hulling machine is driven. Then, the paddy supplied from the paddy tank 2 to the phusher section 1 is subjected to the dehulling action, the scraped rice is sorted in the lower scraped rice wind sorting path 4, and the rice husks are discharged from the dust exhaust pipe 6 to the outside of the machine. Ru.

The mixed rice of brown rice and paddy falls into the sliding rice receiving trough 7, and is lifted and supplied to the starting end side of the supply trough 14 on the rotary sorting cylinder 11 side via the mixed rice hopper 9 in the mixed rice lifting machine 8. The feed helix 13 in the feed gutter 14 supplies the feed to the feed side end of the rotary sorting tube 11 .

Next, the mixed rice is pumped up through the pot hole of the rotating sorting tube 11 which is rotating clockwise in FIG. teeth,
The unsorted mixed rice that has fallen into the supply gutter 14 is sorted, and is fed again into the rotary sorting tube 11 from the conveyance end of the feed gutter 14 by the feed helix 13 and 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 sorted paddy sent to the discharge side end of the rotary sorting cylinder 11 is
The paddy enters the pumping cylinder 21, is pumped up by the pumping cylinder 21, falls into the upper paddy-reducing gutter 22, is returned to the husking section 1, and is again subjected to the husking action in the husking section 1.

The hulling and sorting work is carried out as described above, but during the sorting work, if the amount of grains to be sorted in the rotary sorting cylinder 11 increases or decreases under normal conditions or if it increases abnormally, This is generated by one rotation of the sorting tube 11, and is generated while the layer thickness detection plate 24 is in contact with the upper end portion of the fluidized bed of grains to be sorted, which flows while contacting the inner peripheral surface of the rotating sorting tube 11. Since the layer thickness detection plate 24 moves up and down while being lifted up in response to the up and down movement of the fluidized bed, accurate detection can be performed regardless of the amount of grains to be sorted.
is detected while being lifted in the rotation direction and counter-rotation direction of the rotary sorting tube 11 by the fluidized bed of the grains to be sorted.
The layer thickness detection plate 24 moves up and down without sinking into the fluidized bed of grains to be sorted, and the flow of grains to be sorted from the supply side to the discharge side is not obstructed.

Next, regarding another embodiment shown in FIG. 4, differences from the embodiment shown in FIGS. 1 to 3 will be explained. 24 is a layer thickness detection plate, and the layer thickness detection plate 24 is located below the supply gutter 14 and the finishing rice gutter IG, and is in contact with the lower end of the fluidized bed of the grains to be sorted, and is rotated for sorting. The inner circumferential surface of the cylinder 11 is configured in a plate shape so as to be displaced in the rotation direction or the counter-rotation direction, and this M thickness detection hole 24 is pivotally supported along the front-rear direction on the sorting case 1o. It is attached to the detection shaft 25 via an arm 26, and moves up and down while contacting the lower end of the fluidized bed of grains to be sorted along the inner peripheral surface of the rotary sorting tube 11. It detects the increase or decrease in the amount of sorted grains. This layer thickness detection plate 24 is connected to a layer thickness detection shaft 25. It is interlocked and connected to the paddy supply control valve 28 on the side of the shedding section 1 via an interlocking member (not shown). In addition, 29 receives grains that have been pumped up relatively high among the grains to be sorted, but have not fallen into the finishing rice gutter 16 or the supply gutter 14 above, and flow down to the lower rotation side of the rotary sorting cylinder 11. In the reducing machine for reducing, the above-mentioned layer thickness detection plate 24 is arranged correspondingly to the lower end of the reducing machine 29, and the reduced grains hit the layer thickness detection plate 24 and are displaced to detect the amount of grains to be sorted. You may.

[Brief explanation of the drawing]

The drawings show an embodiment of the invention, and FIG. 1 is a perspective view, FIG. 2 is a cutaway rear view, and FIG. 3 is a cutaway side view.
FIG. 4 is a cutaway rear view showing another embodiment. Explanation of symbols 1 Slipping section 2 Paddy tank 3 Slipping roll 4 Slipped rice wind sorting path 5 Suction fan 6 Dust exhaust tube 7 Slipped rice catcher 8 Mixed rice lifting machine 10 Sorting case 11 Rotating sorting tube 12 Drive roller 1
3 Supply helix 14 Supply gutter 15 Finished rice helix 16 Finished rice gutter (grain receiving gutter) 16a Finished rice adjustment valve 17 Finished rice flow lower pipe 18 Finished rice flow grain plate 19 Finished rice receiving gutter 2o Finished rice grain lifting machine 21 Pumping pipe body
22 Rice reduction value 23 Inclination adjustment means 24 Layer thickness detection plate 24a Long hole 25 Layer thickness detection shaft 26
Arm 27 Interlocking member 28 Paddy supply control valve
29 Reduction machine 30 Angle detector

Claims (1)

[Scope of Claims] [1] A grain receiving trough 16 for receiving grains pumped into a rotary sorting cylinder 11 which has a large number of pot holes in its inner peripheral surface and rotates about a horizontal axis. In the grain sorting device, a layer thickness detection plate 24 is provided which contacts the upper end of the fluidized bed of grains to be sorted generated by the rotation of the rotary sorting tube 11 and moves up and down in a direction along the inner peripheral surface of the rotary sorting tube 11. A grain layer thickness detection device for a grain sorting device, characterized by: