JPH026585B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention mainly relates to an oscillating grain sorting device and a hulling device that separate mixed grains of unhulled rice and brown rice into unhulled rice and brown rice, respectively. It is.

(Object of the Invention) The object of the present invention is to directly separate hulled rice into unhulled rice and brown rice by using the simplest horizontal left-right swing or tilted left-right swing without taking out intermediate rice. .

(Prior Art) Harvested unhulled rice is hulled by a huller to become brown rice, and then polished by a rice miller. When hulling with a huller, if you hull the rice so that it becomes 100% brown rice all at once, there is a risk that the action will be too strong and cause broken rice. 3
The splitting is adjusted so that the rice becomes unhulled rice. Therefore, a device for separating the mixed rice of unhulled rice and brown rice is always attached to the hulling device.

However, what kind of conventional sorting equipment was there? Generally, commercially available sorting equipment that has been put into practical use does not separate mixed grains (1)...unhulled rice (2)...brown rice (3)... This is a method of separating unhulled rice, brown rice, and intermediate rice into three types: (1) the unhulled rice is returned to the hulling device to be re-hulled, and (2) the unhulled rice is taken out as finished rice and is usually Polished rice (3)
The intermediate rice is returned to the supply section of the sorting device and subjected to the circulation sorting action again.

Conventional sorting equipment separates as described above, but
For the purpose of facilitating understanding of the present invention, the structure of a known example will be explained as follows. Figures 1 and 2
The figure shows a prior art technique that separates the screen into the three types described above, in which numerous protrusions B are formed on the surface of the sorting plate A, and the entire surface is formed into a rough surface. Grain C is placed on the rough surface of the sorting plate A, and when the sorting plate A is moved diagonally left and right and up and down as shown by the arrow W, the grain C
is subjected to flow friction resistance by protrusion B group, and arrow D
gradually swayed in the direction of This known sorting plate A is attached to an underframe E as shown in FIG.
F is a diagonal rod, the lower end of the diagonal rod F is pivoted on the underframe E, and the upper end of the diagonal lever F is pivoted to the sorting plate A. G is an eccentric wheel, H is a rod, and when the eccentric wheel G rotates, the sorting plate A is moved through the rod H by the arrow W.
reciprocate in the direction of. The sorting plate A has a rectangular shape when viewed from above, one side is the supply side I, the other side facing the supply side I is the discharge side J, and the lower side in the lateral direction with respect to the direction connecting the supply side I and the discharge side J is the swinging side. lower K,
The higher side is the swinging side L and is inclined at an α angle.
M is a supply funnel, and grains C are supplied from the corners of the supply side I and the shaking side L. The discharge side J is opened over the entire width, and an unhulled rice outlet N is provided on the swinging side K of the discharge side J, a brown rice outlet P is provided on the swinging side L of the discharge side J, and an intermediate extractor is provided in the middle. Exit Q is provided.

However, if the structure is large and efficiency is not an issue, a device that can directly separate hulled rice into unhulled rice and brown rice without producing intermediate rice is disclosed in Japanese Patent Application Laid-Open No. 55-152576. It is stated in the official gazette.

(Problems to be Solved by the Invention) In the known example shown in FIGS. 1 and 2, when a mixed rice of unhulled rice and brown rice is fed from a feeding funnel M onto a sorting plate A, and an eccentric wheel G is rotated, the rice is sorted. Plate A swings in the direction of arrow W to swing the mixed rice on sorting board A. Therefore, as a primary sorting phenomenon, brown rice with a heavy specific gravity sinks to the lower layer on the surface of the sorting plate, and unhulled rice floats to the upper layer of brown rice and is first divided into upper and lower layers. The brown rice that has sunk to the lower layer comes into contact with the sorting plate A and is stirred up, and as a result, as a secondary phenomenon, the brown rice group drifts along the shaking side L with a trajectory like T1 in Figure 2 and is removed. It is taken out to exit P. Paddy rice, which has a specific gravity lighter than brown rice, floats above the brown rice, then slides over the brown rice group and gathers on the lower side, drifts to the shaking side K as shown in T2, and is taken out to the unhulled rice outlet N, and in the middle, Unseparated intermediate rice like T3 is distributed and taken out to intermediate rice outlet Q. The intermediate rice taken out following this T3 trajectory needs to be returned to the sorting plate A for re-sorting, so the known examples shown in Figures 1 and 2 always required an intermediate rice returning device. . If we were to create a sorting device that does not discharge intermediate rice, there would be no need for a device to return intermediate rice, which would definitely reduce the cost.

The device described in JP-A No. 55-152576 solves this problem and is a sorting device in which intermediate rice is not discharged, but since it is a device that sorts by moving the whole in a circular motion, it has the defect that the whole becomes larger. If the rice is rotated quickly to improve efficiency, the centrifugal force will cause the rice to fly out, making it impossible to rotate the rice quickly enough to increase efficiency.

Therefore, the present invention is designed to directly separate hulled rice into unhulled rice and brown rice by either the simplest horizontal left-right swing or tilted left-right swing, without taking out the intermediate rice.

(Means for Solving the Problems) Accordingly, the present invention forms upright walls on the front and rear edges of a sorting plate, which is rectangular in shape when viewed from above, and on either the left or right side of the sorting plate. An unhulled rice outlet is formed on one side and a brown rice outlet is formed on either side, and a device for horizontal or inclined reciprocating rocking in the front-rear direction is attached to the sorting plate, and the plate surface of the sorting plate Divided into 4/5 and rear approximately 1/5, approximately 4/5 of the front side has a group of inclined protrusions whose tips are inclined in the direction of the brown rice outlet, and approximately 1/5 of the rear side has a group of inclined protrusions that have the tip inclined in the direction of the brown rice outlet, and approximately 1/5 of the rear side has a group of inclined protrusions that have the tip inclined in the direction of the brown rice removal port. This is an oscillating grain sorting device formed by a group of inclined protrusions each having a tip inclined in the direction of the take-out port.

(Example) The oscillating grain sorting device of the present invention will be explained with reference to the drawings. In FIG. 3 and after, 21 is a sorting plate;
As shown in FIG. 7, the left-right width 23 is longer than the front-back width 22, and the bird's-eye view shape is a rectangular shape that is long on the left and right sides. At the front edge of the sorting plate 21,
A rising wall 24 is formed over the entire width, and a rising wall 25 is similarly formed over the entire width. Therefore, on the plate surface of approximately the front 4/5 of the sorting plate 21, the tip is
A group of 26 inclined protrusions for moving brown rice facing leftward is formed on the entire plate surface, and on the plate surface approximately 1/5 behind the sorting plate 21, a group of 27 inclined protrusions for moving unhulled rice whose tips are directed toward the right. is formed on the entire board surface. Although it is stated that the ratio of this value is approximately 4/5 or approximately 1/5, this is a conclusion that was finally reached as a result of various experiments, and strictly speaking, the front side is 65cm The optimal effect was obtained with the width of 15 cm on the rear side, so I decided to use 65/70.
The ratio of 15/70 is expressed as approximately 4/5 and approximately 1/5.

When viewed from the left and right sides, the upright wall 24 at the front edge of each of the inclined protrusions 26 and 27 is formed higher, as is clear from the sectional view of FIG.

There is a brown rice outlet 2 in the left front part of the sorting plate 21.
8 and the rest are closed off by the left wall 29. An unhulled rice outlet 30 is formed in the right rear part of the sorting plate 21, and the rest is closed by the right wall 31.

32 is a supply hopper, which is provided on the front side of the side where the unhulled rice outlet 30 is provided. The lower end of the front support rod 34a is pivoted 47 to the front side of the support 33. Abutment 33
A left-right adjustment rotation shaft 37 is freely rotatably attached to the rear side of the housing. As shown in FIG. 3, the adjustment rotation shaft 37 has opposite screw grooves 42a on both left and right sides from the center.
42b are respectively carved, and the screw grooves 42a, 42
The pieces 38a and 38b are screwed into the pieces b, respectively. A vertically movable rod 4 is located below the adjustment rotation shaft 37.
0 is provided vertically movably, and a boss 4 is provided on the vertically movable rod 40.
1a and 41b are provided, and an arm 39a is attached to the top 38a and the boss 41a, and an arm 39b is attached between the top 38b and the boss 41b. Also,
The lower end of the rear support rod 34b is pivotally attached to the vertically movable rod 40, and the mounting base 45 is pivotally attached to the upper ends of the front support rod 34a and the rear support rod 34b.

Thus, the sorting plate 21 is pivotally attached to the upper surface of the left side of the mounting base 45 via the shaft attachment part 43, and a block 44 is fixed to the right end of the mounting base 45, and an adjustment screw 46 perpendicular to the frame 44 is fixed to the right end of the mounting base 45. are screwed together, and the upper end of the adjusting screw 46 is engaged with the lower end of the sorting plate 21.

35 is an eccentric wheel, and 36 is a rod. The upper end of the rod 36 is pivotally attached to the upper position of the support rod 34a, and the angle θ between the rod 36 and the support rod 34 is smaller than a right angle, and the rod 36 is a rod. Form on return. FIG. 6 is a perspective view of the rod 36, and the rod 36 is formed wider toward the top.

13 and 14 show a rice hulling device incorporating the above-mentioned sorting device, and 51 is an elevator, with guide rolls 52 and 53 attached above and below, and a bucket belt 54 running around it. . A loading port 55 is formed at the lower end of the elevator 51.
Attach the staking hopper 56 to 5. Elevator 51
A discharge port 57 is opened at the side of the upper end, and a fixed hopper 58 is directly attached to the outside of the discharge port 57. The fixed hopper 58 is usually made of plastic, but the elevator 51 and the fixed hopper 58 may be integrally made of plastic. The fixed hopper 58 is fixed and does not move up and down, so the discharge port 57
It is fixed directly to the outside of the body with a set screw, etc., and
The lower end of the fixed hopper 58 is fixed to the upper surface of the outer case 60 of the hulling section 59 provided at its lower position.

An overflow hole 61 is formed in the midsection of the fixed hopper 58. 62 is an on-off valve. Inside the hulling section 59, a pair of hulling rolls 63 and 64 are rotatably mounted with shafts 65 and 66 in a diagonally vertical relationship. The axial direction of the shafts 65, 66 is the same as the axial direction of the guide rolls 52, 53. Immediately below the on-off valve 62, a feed roll 67 is provided. A sink plate 68 is provided at the bottom of the feeding roll 67, and the lower end of the sink plate 68 is connected to the hulling rolls 63 and 6.
It is coming between 4 and 4.

A blower 69 is provided outside the sink plate 68. The blower 69 is long in the width direction and spans almost the entire width. An air passage 70 of the air blower 69 blows air into the wind selection section 71 through the lower side of the hulling rolls 63 and 64. A swinging type spreading device 72 is provided on the discharge side of the hulling rolls 63 and 64.
The grains discharged from 3 and 64 are spread in the width direction.

That is, 73 is a suction blower attached to the side of the wind selection section 71, an eccentric wheel 75 is attached to its rotating shaft 74, a rod 76 is fixed to the eccentric wheel 75, and a swing type blower is attached to the other end of the rod 76. Fix the diffuser 72.

The swing type diffuser 72 has a lower end elastically supported by a plate spring 77, and a lower end opening 78 is formed to become wider toward the tip. The lower end opening 78 violently vibrates obliquely up and down when the eccentric wheel 75 rotates, and spreads the hulled material hulled by the hulling section 59 in the width direction.

79 is a distribution supply gutter provided below the lower end opening 78. A large number of feed protrusions 80 are provided on the bottom surface of the distribution supply gutter 79. The distribution supply gutter 79 is fixed to the upper surface of the sorting plate 21 described above. The sorting plate 21 has a structure in which multiple stages are stacked. 87 is a port for returning unhulled rice, 88 is a brown rice drain, 89 is a lift for finished rice, 90 is a storage tank for finished rice, 91 is a swing type sorting unit, and 92 is a mangoku.

(effect) Next, we will discuss the effect.

Referring to FIG. 13, to first describe the general operation, unhulled rice a supplied to the elevator 51 rises and is supplied to the hulling section 59, where it is divided into unhulled rice a, brown rice b, and unhulled grains. c, and these are fed into the wind sorting section 71 on the side, where the paddy c is wind-selected, and only the unhulled rice a and brown rice b flow into the swing-type sorting section 91 and are sorted. Rice a is returned to the elevator 51, and brown rice b is excluded from the system.

To describe the specific operation, when the raw material, unhulled rice a, is supplied to the loading port 55, it is raised in the elevator 51 by the bucket belt 54 and stored in the fixed hopper 58 through the discharge port 57. When the stored amount exceeds, it flows out from the overflow hole 61 and is returned to the filling port 55. By opening the on-off valve 62, the grain stored in the fixed hopper 58 is fed out by the feed roll 67, and flows on the inclined sink plate 68 to the huller which is diagonally above and below the lower end of the sink plate 68. Supplied between rolls 63 and 64,
The rice is hulled and flows into the swinging type diffusion device 72. Therefore, since the rotating shaft 74 of the suction blower 73 is rotated and the eccentric ring 75 is fitted to the rotating shaft 74, when the rotating shaft 74 rotates, the eccentric ring 75
5 rotates, and the rod 76 whose upper end is fixed to the eccentric wheel 75 vibrates diagonally up and down.
2 vibrates diagonally up and down. During this time, the leaf spring 77 elastically supports the swinging diffuser 72.

Therefore, when the hulled rice in the swinging type diffusion device 72 flows out from the lower end opening 78,
It falls in a state where it is uniformly dispersed in the width direction and is supplied into the distribution supply gutter 79. The air sucked by the blower 69 passes through the air passage 70 and below the rocking type diffusion device 72, passes through the grains of rice grains falling from the lower end opening 78, and passes through the wind selection section 71.
When rising inside, the light rice grains c are blown away and sorted, and the rice grains c are sucked by the suction blower 73 and removed from the system.

The mixed grains flowing down from the swinging type diffusion device 72 are supplied to the special sorting plate 21 from the distribution supply gutter 79 and are sorted.The function of the sorting plate 21 will be described as follows. When the eccentric wheel 35 is rotated, the angle between the rod 36 and the support rod 34 is smaller than the θ right angle, so the selection plate 21 is in the range of 1:1.01 to 1.2.
When moving from the front side to the rear side, it moves quickly, and when moving from the back side to the front side, it moves slowly.
Therefore, the mixed rice of unhulled rice a and brown rice b was sorted on the sorting board 21.
As shown in Figure 10, unhulled rice a and brown rice b are initially in a state of intermediate rice, but in this state they are subjected to horizontal or inclined swinging in the front-rear direction.
As a primary phenomenon, brown rice b, which has a heavy specific gravity, sinks to the lower layer, and unhulled rice a, which has a lighter specific gravity, floats to the upper layer of the brown rice group B, and the brown rice b, which has sunk to the lower layer, moves to the brown rice movement inclined protrusion 2.
6 and the paddy rice moving inclined protrusion 27.

In this way, the brown rice b in the lower layer that has come into contact with the brown rice moving inclined projection 26 and the paddy rice moving inclined projection 27 is affected by the moving inclined projections 26 and 27, and as a secondary phenomenon, the front edge of the sorting plate 21 gradually rises. It moves toward the upper wall 24 and is deposited relatively thickly on the front half of the sorting plate 21. As a result, the rear half of the sorting plate 21 becomes relatively thin. In this way, the brown rice b accumulates relatively thickly on the front half of the sorting plate 21, and the brown rice b accumulates on the front half of the sorting plate 21.
When it becomes relatively thin in the rear half, the unhulled rice a floating on the surface of the brown rice b in the front half of the sorting plate 21 slides on the surface of the brown rice b that is tilted and moves toward the rear half of the sorting plate 21. do.

The state of this secondary phenomenon is adjusted by rotating the adjustment rotation shaft 37. That is, when the adjustment rotation shaft 37 is rotated, the pieces 38a and 38b, which are screwed into the opposite threaded grooves 42a and 42b, move toward and away from each other, so that the arm 39
a and 39b are inclined or vertical. Therefore, the vertically movable rod 40 is moved up and down by the arms 39a and 39b, and the rear support rod 34a is moved up and down, so that the front and rear inclination of the sorting plate 21 is adjusted.

As a tertiary phenomenon, when the above operation is repeated, the brown rice b that has accumulated thickly on the front half of the sorting plate 21 is moved along the front rising wall 24 due to the action of the tip of the brown rice moving inclined projection 26. Start moving to the left. At this time, the brown rice b that is in contact with the inclined protrusions 26 and 27 on the plate surface of the sorting plate 21 continues to be subjected to the above-mentioned sorting action while moving to the left.
The layer of brown rice b gradually increases in thickness as it moves along the rising wall 24, so that a part of the upper layer of brown rice b begins to flow toward the rear half of the sorting plate 21, and the brown rice b When the rice reaches the left side of the sorting plate 21, the purity is further improved and only perfect brown rice b is taken out to the brown rice outlet 28. In this case, the movement of the brown rice b toward the direction of the brown rice outlet 28 is carried out by the tips of the brown rice moving inclined protrusions 26;
has a much larger area than the unhulled rice moving inclined protrusion 27, so that the brown rice b can be transferred reliably.

On the other hand, the unhulled rice a slides on the upper layer of the brown rice b on the slope and is deposited on the rear half of the sorting plate 21, but in the rear half of the sorting plate 21, it is affected by the unhulled rice moving inclined protrusion 27 as a quaternary phenomenon. and transferred to the right side of the sorting plate 21. However, the paddy rice moving inclined projection 2
7, it is advanced to the right side of the sorting plate 21, and since the secondary phenomenon is still being sorted, the purity of the unhulled rice a gradually increases as it advances toward the unhulled rice outlet 30, and finally it becomes complete unhulled rice. The unhulled rice is then taken out from the unloading port 30.

The above tertiary phenomenon, that is, the brown rice outlet 28 of brown rice b
The movement in the direction and the quaternary phenomenon, that is, the movement of the unhulled rice with respect to the unhulled rice outlet 30, are performed by adjusting the left and right inclinations of the sorting plate 21. That is, by rotating the adjusting screw 46, the horizontal inclination of the sorting plate 21 is adjusted, and depending on the degree of inclination, the tertiary phenomenon and the quaternary phenomenon can be finely adjusted.

During this time, the intermediate rice is accumulated in the center of the sorting plate 21 and rotates around, and the newly supplied brown rice b and unhulled rice a are only metabolized and never leave the sorting plate 21.

Therefore, the separated unhulled rice a is sent to the unhulled rice outlet 3.
0 is filtered on the Mangoku 92, large foreign substances are sorted out, and only the unhulled rice a that has passed through the Mangoku 92 is returned to the unhulled rice return port 87, where it is recirculated along with new raw materials by the bucket belt 54. The rice is hulled. On the other hand, the brown rice taken out from the brown rice outlet 28 is transferred to the brown rice flow gutter 88.
The rice then flows into the finished rice elevator 89, is lifted up and stored in the finished rice storage tank 90, is weighed by a weighing and bagging device provided at the bottom, and is transported to a desired position.

(Effects) The present invention forms upstanding walls on the front and rear edges of a sorting plate, which is rectangular in shape when viewed from above, and provides an unhulled rice outlet on either the left or right side of the sorting plate. A brown rice outlet is formed on the other side, and a device for horizontally or inclined reciprocating swinging in the front and rear directions is attached to the sorting plate.
5 and the rear side approximately 1/5, and the front side approximately 4/5 has a group of inclined protrusions whose tips are inclined in the direction of the brown rice outlet, and the rear side approximately 1/5 has the unhulled rice outlet. Since we have created a swing-type grain sorting device consisting of a group of inclined protrusions each having a tip inclined in the direction of Mixed rice can be separated into paddy rice and brown rice without removing the rice.

(b) As a result of the experiment, better results can be expected compared to other ratios.

This effect is achieved.

[Brief explanation of drawings]

Fig. 1 is an enlarged partial cross-sectional view of a known example, Fig. 2 is a front view of the known example, Fig. 3 is a front view of the present invention, Fig. 4 is a side view of the same, and Fig. 5 is a left and right side of the sorting plate. Fig. 6 is a perspective view of the eccentric wheel and rod, Fig. 7 is a plan view of the sorting plate, Fig. 8 is a diagram of its operation, and Fig. 9 is a longitudinal cross-sectional side view of the sorting plate. , FIGS. 10 to 12 are separated state diagrams, FIG. 13 is a schematic diagram of a hulling device incorporating the sorting plate of the present invention, and FIG. 14 is a longitudinal sectional side view thereof. Explanation of symbols, 21... Sorting board, 22... Front and back width, 23... Left and right width, 24... Standing wall, 25...
Standing wall, 26...Left inclined protrusion, 27...Right inclined protrusion, 28...Brown rice outlet, 29...Left wall, 30...
...Unhulled rice outlet, 31... Right wall, 32... Supply hopper, 33... Support stand, 34a... Front support rod, 34
b... Rear support rod, 35... Eccentric wheel, 36... Rod, 37... Spiral rod, 38a... Top, 38b...
Top, 39a...Arm, 39b...Arm, 4
0...Vertical moving rod, 41a...Boss, 41b...Boss, 42a...Thread groove, 42b...Thread groove, 43
...Shaft mounting part, 44...piece, 45...mounting base, 4
6... Adjustment screw rod, 47... Pivoting, 51... Elevator, 52... Guide roll, 53... Guide roll,
54... Bucket belt, 55... Slotting port, 56
...Putting hopper, 57...Discharge port, 58...Fixed hopper, 59...Hulling section, 60...Outer case, 61...Overflow hole, 62...Opening/closing valve, 63...Hulling roll , 64...husking roll,
65...shaft, 66...shaft, 67...feeding roll,
68... Sink plate, 69... Air blower, 70... Air channel, 71... Wind selection section, 72... Rocking type diffuser,
73... Suction blower, 74... Rotating shaft, 75...
...Eccentric wheel, 76...Rod, 77...Spring, 78
... lower end opening, 79 ... distribution supply gutter, 80 ...
Projection, 87...Paddy rice return port, 88...Brown rice flow gutter,
89... Lifting machine for finished rice, 90... Storage tank for finished rice, 91... Swing type sorting section, 92... Mangoku.

Claims (1)

[Claims] 1 Upright walls are formed on the front and rear edges of the sorting plate, which has a rectangular shape when viewed from above, and a paddy rice outlet is provided on either the left or right side of the sorting plate, and a brown rice outlet is provided on the other side. A device is attached to the sorting plate for horizontal or inclined reciprocating swinging in the front and rear directions, and the plate surface of the sorting plate is divided into approximately 4/5 on the front side and approximately 1/5 on the rear side. , a group of inclined protrusions whose tips are inclined in the direction of the brown rice outlet on approximately 4/5 of the front side, and a group of inclined protrusions whose tips are inclined in the direction of the unhulled rice outlet on approximately 1/5 of the rear side. An oscillating grain sorting device formed by forming the following.