JPH0573477B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial Application Field The present invention is directed to a sorting cylinder that has a number of pot holes formed in its inner circumferential surface and is rotatably hung horizontally. This invention relates to an automatic grain stabilizing device in a grain rotary sorter that sorts mixed grains of brown rice and paddy.

In particular, the present invention automatically increases or decreases the rotating speed of the sorting cylinder when the amount of mixed grains supplied into the sorting cylinder increases or decreases, thereby adjusting the amount of grains selected into the receiving trough. By doing so, the flow rate of the mixed grains flowing inside the sorting cylinder is always stabilized.

(b) Conventional technology As mentioned above, a mixed grain of brown rice and paddy is collected by inserting a receiving trough into the sorting barrel, which is rotatably hung horizontally and has many pot holes formed in its inner circumferential surface. The grain rotary sorter to be sorted is combined with the husking section and wind sorting section to constitute a huller, and the grain rotation sorter changes its posture by increasing or decreasing the amount of mixed grains supplied into the sorting barrel. For example, in the conventional technology, there are
There is one as shown in the -115647 publication.

However, the system disclosed in this publication adjusts the amount of paddy supplied into the sorting barrel by increasing or decreasing the amount of paddy supplied to the shredding section by changing the posture of the sensing plate. It is not possible to immediately correct and stabilize the flow rate of mixed grains flowing in the barrel, which not only has a negative effect on sorting accuracy, but also has drawbacks such as clogging in the machine if too much is supplied. It was.

(c) Problems to be Solved by the Invention As described above, in the conventional technology, the amount of paddy supplied to the sorting barrel is adjusted by increasing or decreasing the amount of paddy supplied to the husking section. Therefore, it is impossible to immediately correct the flow rate in the sorting cylinder to stabilize it, which has the disadvantage of adversely affecting sorting accuracy.

Therefore, the present invention has developed a system in which, when the amount of mixed grains supplied into the sorting cylinder increases or decreases, this change in increase or decrease is reliably sensed and the rotating speed of the sorting cylinder is automatically increased or decreased. The aim is to actively stabilize the flow rate in the sorting cylinder by adjusting the selection amount and immediately responding to the problem, which was once considered a drawback in the conventional method.

(d) Means for Solving the Problems Therefore, the present invention provides a method for separating unpolished rice by inserting a receiving gutter into a sorting cylinder which is rotatably hung horizontally by forming a number of pot holes in its inner circumferential surface. In a grain rotary sorter for sorting mixed grains of paddy, a sensing plate is provided to detect an increase or decrease in the amount of mixed grains fed into the sorting barrel, and
The sensing plate has a bent dogleg shape at the lower part of the plate so that it can swing freely using the upper end as a fulcrum, and the contact surface of the lower part is the upper surface of the fluidized bed of mixed grains formed on the inner peripheral surface of the sorting cylinder. The rotating speed of the sorting cylinder is automatically increased or decreased based on the sensing plate's detection of an increase or decrease in the amount of mixed grains.

(E) Effect With this structure, the mixed grains supplied into the sorting barrel flow from the inlet side to the outlet side, and the flow is deflected toward the grain receiving side and causes a rise. The brown rice flows while forming a layered fluidized bed, and is selected into the receiving channel by the scooping action of the pot hole, but as the amount of mixed grains supplied into the sorting barrel increases, the fluidized bed increases. The upheaval state increases, and decreases as the volume decreases.Following the fluctuations in size of the fluidized bed, the sensing plate swings and changes its posture using its upper end as a fulcrum, and this change in posture increases the rotating speed of the sorting cylinder. speed up or slow down. In other words, when the amount increases, the sensing plate senses it and automatically increases the rotating speed of the sorting cylinder, and the scooping action by the pot hole becomes more active, increasing the amount of material selected into the receiving gutter.
On the other hand, if the weight is reduced, the rotating speed of the sorting cylinder will slow down and the amount of material selected into the receiving gutter will be reduced.

The sensing plate that detects the increase or decrease in the amount of mixed grains has its lower side bent into a dogleg shape to form a contact surface on the lower side, and the contact surface is attached to the upper surface of the fluidized bed in contact with the upper surface of the fluidized bed. As a result, the abutment surface comes into close contact with the upper surface of the fluidized bed, and the swinging motion that follows the fluctuations in size of the fluidized bed is ensured, and the rotational speed of the sorting cylinder can be accurately adjusted.

In this way, the amount of mixed grains fed into the sorting cylinder is adjusted in accordance with the increase or decrease in the amount of mixed grains supplied into the receiving trough, and the flow rate of the mixed grains flowing inside the sorting cylinder is immediately corrected and stabilized.

(f) Examples The present invention will be explained below with reference to examples, and these examples are shown in which a grain rotary sorter according to the present invention is incorporated as a huller. This grain rotary sorter C is disposed on the wind sorting section B adjacent to the husking section A, and constitutes a huller.

In the grain rotary sorter C, a sorting barrel 2 having a large number of pot holes 1 formed in its inner circumferential surface is supported by a plurality of drive wheels 3 and 4 and horizontally mounted so as to be rotatable. Gutter 5
and the circulation gutter 6 are inserted horizontally.

A screw conveyor 7 is installed inside the receiving gutter 5 to transport the grains from the inlet side A screw conveyor 8 for transport is housed inside, and a drop port 9 is opened on the entrance side X.

Several grain-lifting blades 10 are attached to the inner circumferential surface of the exit side Y end of the sorting cylinder 2 at equal intervals, and the grain-lifting blades 10 are positioned at the upper part of the rotational locus of the grain-lifting blades 10 so that the grains are lifted up by the grain-lifting blades 10. It is provided with a reducing gutter 11 which receives the grains and causes them to flow into the threshing section A.

In addition, 12 is a thrower that lifts the mixed grains of brown rice and paddy obtained by wind sorting to the outlet side Y of the circulation gutter 11, and 13 communicates the outlet side Y of the receiving gutter 5 and the wind sorting section B. It is a guide cylinder.

Further, 14 and 15 indicate that the sorting cylinder 2 rotates in the direction of arrow A, and the lower edge is attached to the receiving gutter 5 part and the circulation gutter 6 part of the grain receiving side Z where the grains are scooped up through the pot hole 1. This is a partition plate that can be used to change the degree of inclination.

Next, 16 is a sensing plate made of a wide plate, which rotates in the direction of arrow A and is located on the grain receiving side Z and is connected to the circulation gutter 6.
The upper end is fixed to a support shaft 17 diagonally downward, and the support shaft 17 is used as a fulcrum to swing freely in the direction in which the sorting cylinder 2 rotates. The contact surface 16a of the lower side is shifted toward the grain receiving side Z in the sorting cylinder 2 and brought into contact with the upper surface of the fluidized bed flowing in a raised state, so that it follows the fluctuations in size of the fluidized bed. The support shaft 17 is rotatably installed from the inlet side X to the outlet side Y, and has an arm rod 18 extending downward from the end projecting from the outlet side Y.

Reference numeral 19 is a power take-off shaft taken out from inside the gear case 20 of the removal section A, and the drive pulley 21 is attached thereto. Further, a driven pulley 24 is attached to the end of one of the shafts 22 and 23 of the drive wheels 3 and 4 that protrudes from the exit side Y, and this driven pulley 24 and the drive pulley A transmission band 25 is wrapped around 21. Driven pulley 2
Reference numeral 4 denotes a variable diameter pulley that changes the effective diameter to large or small depending on the strength of the tension of the transmission band 25, and changes the effective diameter depending on the displacement of a tension wheel 27 attached to a tension rod 26 that rotates around the power take-off shaft 19. In this way, the tension of the transmission band 25 is made stronger or weaker, thereby changing the effective diameter. The lower end of the tension rod 26 and the lower end of the arm rod 18 are connected by a connecting rod 28.

Therefore, the mixed grains of brown rice and paddy obtained by wind sorting by the thrower 12 are transferred to the outlet side Y of the circulation gutter 6.
The brown rice is lifted up and supplied into the sorting cylinder 2 from the drop port 9 on the entrance side X, and while flowing inside the sorting cylinder 2 from the entrance side The paddy is picked up in the receiving trough 5, reaches the outlet side Y, is lifted by the grain lifting blade 10, and is transferred to the return trough 11.
A part of the brown rice and a part of the paddy are discharged into the husking section A, and fall into the circulation gutter 6, and are again supplied into the sorting cylinder 2 through the drop port 9.

Further, the brown rice selected in the receiving trough 5 passes through the guide cylinder 13 from the outlet side Y, and is taken out of the machine after removing small rice in the wind selection section B.

In this case, the mixed grains flowing inside the sorting cylinder 2 are deviated to the grain receiving side Z to form a fluidized bed B in a raised state as shown in FIG. The tension force in the band 25 is balanced and the driven pulley 2
The effective diameter of 4 is kept constant, and the sorting cylinder 2 is rotated in the direction of arrow A via drive wheels 3 and 4.

Now, if the amount of mixed grains supplied from the drop port 9 increases, the fluidized bed B will exhibit a large bulge as shown in C, and the tension of the transmission band 25 will be overcome and the sensing plate 1
6 is pushed up. This causes the sensing plate 16 to touch the support shaft 1 at the upper end.
The posture is changed by swinging with 7 as the fulcrum,
This posture change is achieved by moving the arm rod 18 to the fourth position via the support shaft 17.
As it is rotated as shown by arrow D in the figure, the tension force of the transmission band 25 is increased by the interlocking of the connecting rod 28, tension rod 26, and tension wheel 27, so the effective diameter of the driven pulley 24 becomes small. By increasing the number of rotations transmitted from the power take-off shaft 19 and increasing the rotating speed of the sorting cylinder 2, the scooping action by the pot hole 1 is increased and the receiving trough 5 is increased.
By increasing the amount of mixed grains in the sorting cylinder 2 and decreasing the flow rate of mixed grains in the sorting cylinder 2, the fluidized bed returns to its original state and becomes stable.

On the other hand, when the flow rate of the mixed grains supplied into the sorting cylinder 2 decreases, the fluidized bed B forms a smaller bulge than this, so the sensing plate 16 changes its posture by swinging, and the arm rod 18 ( The driven pulley 2 rotates in the e) direction.
The effective diameter of 4 becomes large and the rotating speed of the sorting cylinder 2 in the direction of arrow A is reduced, so the scooping action is slowed down and the amount picked up into the receiving gutter 5 is reduced to return the fluidized bed to the state of B. This stabilizes the flow rate of the mixed grains flowing inside the sorting cylinder 2 at all times.

In this case, the sensing plate 16 has a dogleg shape by bending its lower side to form a contact surface 16a on the lower side, and the contact surface 16a is in contact with the upper surface of the fluidized bed. From, contact surface 1a 6a
comes into close contact with the upper surface of the fluidized bed, and the swinging motion that follows the fluctuations in size of the fluidized bed becomes reliable, and the rotational speed of the sorting cylinder 2 can be adjusted accurately.

In this embodiment, the effective diameter of the driven pulley 24 is changed by increasing or decreasing the tension of the transmission band 25 by changing the attitude of the sensing plate 16.
The rotational speed of the sensor plate 16 is increased or decreased, and a variable speed motor measures the flow rate of the mixed grains using a potentiometer according to the degree of change in the attitude of the sensing plate 16, and drives the drive wheels 3 and 4 via a controller. The rotating speed of the sorting cylinder 2 may be controlled by increasing or decreasing the speed.

(G) Effects of the Invention As described above, the present invention is capable of mixing unpolished rice and paddy by inserting a receiving gutter into the sorting barrel which is horizontally suspended by forming a number of pot holes in its inner peripheral surface so as to be rotatable. In a grain rotary sorter for sorting grains, a sensing plate is provided to detect an increase or decrease in the amount of mixed grains fed into the sorting barrel,
In addition, the sensing plate has the lower part of the plate bent in a dogleg shape so that it can swing freely using the upper end as a fulcrum, and the contact surface of the lower part of the plate detects the flow of mixed grains formed on the inner circumferential surface of the sorting cylinder. The sensor plate is attached in contact with the upper surface of the layer, and the rotating speed of the sorting cylinder is automatically increased or decreased according to the detection of increase or decrease in the amount of mixed grains by the sensing plate, so that the grains are supplied into the sorting cylinder. If the flow rate of mixed grains increases or decreases, this is sensed and the rotating speed of the sorting cylinder is automatically increased or decreased. In addition, the sensing plate that detects the increase or decrease in the amount of mixed grains has a bent dogleg shape at the bottom and uses the upper end as a fulcrum. The lower part of the contact surface is in contact with the upper surface of the fluidized bed of mixed grains formed on the inner peripheral surface of the sorting cylinder, so that it can swing to follow the fluctuations in size of the fluidized bed. This makes it possible to reliably detect increases and decreases in the flow rate of mixed grains, making it possible to accurately adjust the rotating speed of the sorting cylinder, thereby maintaining good sorting accuracy regardless of the amount of feed, and It has the advantage of not causing clogging inside the machine.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is an external side view of the entire hulling machine incorporating the grain rotary sorter according to the invention, and Fig. 2 is a side view taken along the - line in Fig. 1. 3 is a sectional view taken along the same line, FIG. 4 is an extracted view that allows the main parts to be enlarged, and FIG. 5 is an explanatory view of the operation. 1... Pot hole, 2... Sorting barrel, 5... Receiving gutter, 16
...Sensing plate, C...Grain rotary sorter, 16a...
contact surface.

Claims (1)

[Claims] 1 A grain rotary sorting machine that separates mixed grains of brown rice and paddy by inserting a receiving gutter 5 into a sorting barrel 2 which has a number of pot holes 1 formed on its inner peripheral surface and which is rotatably hung horizontally. At C, a sensing plate 16 is provided to detect an increase or decrease in the amount of mixed grains supplied into the sorting cylinder 2, and the sensing plate 16 has a bent dogleg shape at the lower part of the plate, and an upper end. The sensing plate 16 is swingable with the sensing plate 16 as a fulcrum, and its lower contact surface 16a is in contact with the upper surface of the fluidized bed of mixed grains formed on the inner peripheral surface of the sorting cylinder 2. Alternatively, an automatic grain stabilizing device in a grain rotary sorting machine is characterized in that the rotating speed of the sorting cylinder 2 is automatically increased or decreased by detecting weight loss.