JPH09108628A - Grain sorter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To separate and sort supplied grains to three kinds; large, middle and small, by the sizes of the grains, to adjust the removal rate of small rice without adjusting the rotating speed of the sorting nets and to enhance sorting efficiency and accuracy without increasing the size of the sorting nets. SOLUTION: This grain sorter is provided with a sorting section which separates and sorts the grains supplied into the sorting nets by the rotating and revolving motion of the cylindrical vertical type rotary sorting nets 3 to the grains passing the meshes of the sorting nets and the grains failing to pass these meshes and a driving section having a driving source for the sorting section. An inside partition plate 43 for vertically partitioning the circumference of the sorting nets is disposed in the sorting section and is disposed adjustably in the mounting height of the inside partition plate. The sorting sections are disposed by stacking these sections vertically in multiple stages. The driving section is disposed below the sorting section of the lowermost part and the bottom end of the moving spindle shaft 6 of the sorting section of the upper stage is cooperatively connected to the top end of the moving spindle shaft of the sorting section of the lower stage. The bottom end of the moving spindle shaft in the sorting section of the lowermost stage is cooperatively connected to the driving source of the driving section.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain selection device for performing rough selection before hulling work or rice selection after hulling work.

[0002]

2. Description of the Related Art Conventionally, there is a planetary sorting type rice sorter, which sorts while the supplied brown rice flows through a cylindrical vertical rotary sorting net. Fine brown rice and small rice are taken out separately by separating the rice into small rice and small rice by the centrifugal force of the revolution, and the removal rate of small particles is adjusted by adjusting the rotation speed of the sorting net. It was

On the other hand, the increase in the processing capacity has been carried out mainly by increasing the size of the sorting net.

[0004]

Since the conventional grain selection device of the planetary selection type can only select two types of fine brown rice and fine rice, the sorting work is performed again in order to take out the good brown rice in the small rice. It was necessary, and a speed change mechanism was necessary for adjusting the removal rate of small rice.

On the other hand, if the increase in the processing capacity depends on the larger size of the sorting net, the sorting capacity per one sorting net is limited, and the accuracy is lowered. To compensate for this, the removal rate of small rice is reduced. The higher the ratio, the lower the recovery rate of good brown rice and the lower the efficiency.

[0006]

SUMMARY OF THE INVENTION Therefore, according to the present invention, in a grain selection apparatus of a planetary selection system, by disposing an intermediate partition plate for vertically partitioning the periphery of the selection net in this selection unit, Some pass through the mesh and some do not.
Furthermore, it is separated and sorted into those that passed above the middle partition and those that passed below, and with this three types of separation and selection of good brown rice, almost good brown rice and small rice, it is possible to remove good brown rice from small rice like in the past. It is possible to adjust the removal rate of small rice without using the conventional speed changing mechanism of the rotating speed of the sorting net by eliminating the need for re-sorting and adjusting the mounting height of the partition plate. .

On the other hand, according to the present invention, in a grain selecting apparatus of a planetary selecting system, the selecting units are arranged in a vertically stacked manner, and the drive unit is arranged below the lowermost selecting unit, and the upper stage is arranged. The lower end of the driving shaft of the sorting unit of the above is interlockingly connected with the upper end of the driving shaft of the lower sorting unit, and the lower end of the driving shaft of the lowermost sorting unit is interlockingly connected with the drive source of the driving unit, and the multistage grain By configuring a grain sorting device and increasing the processing capacity by increasing the number of sorting nets, it is possible to prevent the sorting accuracy from decreasing due to excessive throughput per sorting net, and to reduce the collection rate of good brown rice. Also prevent.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side sectional view of a sorting unit, FIG. 2 is an overall front view of a rice sorting machine of a planetary sorting system, in which (1) is a vertically long rectangular tubular machine frame, and (2) is a machine frame (1 ) Which is fitted and fixed to the upper end of), (3) is a cylindrical vertical rotary sorting net with a mesh of the same size installed inside the hopper (2), and (4) is stretched below the sorting net (3). The bottom plate of the sorting section to be fixedly installed, (5) is an electric motor installed inside the bottom of the machine frame (1), and the driving section is formed at the bottom of the machine frame (1), and the sorting section is formed above the driving section. doing.

As shown in FIGS. 3 to 6, a main shaft (6) is vertically provided at the center of the selecting section, and the main shaft (6) is provided.
4 sorting nets (3) around the
They are arranged at 0 ° intervals.

The lower end of the main shaft (6) is rotatably supported by a lower bearing (7) fixed to the bottom plate (4), and the upper end of the main shaft (6) is connected to the hopper (2) by the cylindrical brown rice supply port (8). It is rotatably supported by an upper bearing (9) fixedly supported therein, and the lower end of this driving shaft (6) projects to the drive portion and is rotatably supported by the lower surface of the bottom plate (4). The rotary shaft (10) of the transmission motor (5) and the counter shaft (11) that are interlockingly connected by belt transmission are interlockingly connected by gear transmission.

Further, a flat-shaped brown rice distributor (12) is provided below the hopper (2) to uniformly distribute and supply the brown rice to each sorting net (3). This distributor (12) is formed in a hollow structure by a flat bottom plate (13) and a cover (14) that covers the bottom plate (13), and the distributor (12) is attached to the driving shaft (6) via the bottom plate (13). The distributor (12) is integrally rotatably fixedly supported, and a circular hole (1) opened in the center of the cover (14).
The end of the supply port (8) of the hopper (2) rushes into 5), and at the end of the cylindrical brown rice input port (16) opened on the outer periphery of the bottom plate (13), each sorting net (3) The upper net flange (17) fitted and fixed to the upper end of the upper net is rotatably fitted, and the upper support shaft (18) is suspended from the cover (14) at the center of each inlet (16) to fix the upper net. Flange (1
The upper end of each sorting net (3) is rotatably supported by each upper support shaft (18) through a bearing (19) integrally formed at the center of (7).

Further, a disc-shaped good brown rice receiving plate (20) and a middle receiving plate (21) are provided at the bottom of the sorting section. The good brown rice receiving plate (20) and the middle receiving plate (21) are fixedly supported on the main shaft (6) so as to be able to rotate integrally, and the middle receiving plate (21) is provided above the good brown rice receiving plate (20) with a spacer ( 22) and they are integrally connected to each other with a predetermined gap therebetween. And a lower mesh flange (23) fitted and fixed to the lower end of each sorting mesh (3)
Project downward from the lower end of the sorting net (3),
1) The lower net flange (23) protruding downward from the sorting net (3) is passed through the circular hole (24), and the lower net flange (23) of the lower brown flange (23) is provided on the upper surface side of the good brown rice receiving plate (20). A lower support shaft (25) for each sorting mesh (3) is rotatably supported on the good brown rice receiving plate (20) while the lower end is open, and a bearing (which is integrally formed at the center of the lower mesh flange (23) ( Two
The lower end of each sorting net (3) is rotatably supported by each lower support shaft (26) via 6).

Further, a planetary motion mechanism (27) of each screening net (3) is provided on the lower surface of the good brown rice receiving plate (20). This planetary motion mechanism (27) is a lower bearing (7) of the driving shaft (6).
Sun gear (28) integrally fixed to the lower support shaft (25)
A planetary gear (29) integrally fixed to the lower end of the same and a good brown rice receiving plate (20) are rotatably supported via a shaft (30) and always mesh with the sun gear (28) and each planetary gear (29). It is composed of an idle gear (31), and the rotation of the main shaft (6) causes the respective sorting nets (4) to revolve around the main shaft (6), and the lower support shaft (25).
Rotation of the lower support shaft (25) and the upper support shaft (18) on the same axis as the center of rotation of the respective sorting nets (3),
A planetary motion in which the direction of revolution and the direction of rotation are opposite to each other is configured to be performed on each of the sorting networks (3).

Further, a good brown rice gutter (3) fixed integrally to the upper surface of the bottom plate (4) and arranged on the outer peripheral side of the good brown rice receiving plate (20).
2) is provided, and a good brown rice scraping blade (33) that is fixed to the outer edge of the good brown rice receiving plate (20) and circulates inside the good brown rice gutter (32) is provided, and also in the machine frame (1). A center gutter (36) fixed integrally and arranged on the outer peripheral side of the center support plate (21) is provided, and fixed to the outer peripheral edge of the center support plate (21) to circulate inside the center support gutter (36) A scraping blade (37) is provided, and a good brown rice outlet (38) and a medium outlet (39) are vertically stacked on the front of the machine frame (1) at a position corresponding to the bottom of the sorting section. The good brown rice outlet on the side (38) is good brown rice gutter (3
2) is connected to the discharge port (40) provided on the bottom surface, and the upper middle outlet (39) is connected to the discharge port (41) provided on the bottom surface of the middle trough (36). .

Further, in the middle of the sorting section, a disk-shaped medium is formed in which the driving shaft (6) penetrates through the center and each sorting net (3) penetrates through the circular hole (42) in the outer side. A small rice receiving plate (43) which is a partition plate is provided, and a small rice gutter (44) is arranged on the outer peripheral side of the small rice receiving plate (43) and is fixed to the outer peripheral edge of the small rice receiving plate (43). A small rice scraping blade (45) that circulates inside the small rice gutter (44) is provided, and a discharge port (46) opened on the bottom of the small rice gutter (44) is a machine frame (1).
A small rice outlet (47) opening to the outside of the front of the unit is provided integrally with the small rice gutter (44).

In the rice ball support plate (43), a central boss portion (43a) which slidably penetrates the driving shaft (6) is integrally fixed to the driving shaft (6) by a set screw (48). A small number of mounting holes for the rice ball support plate (43), which has a multi-staged screw hole (49) for the driving shaft (6) into which the setscrew (48) is screwed and is integrally rotatably fixed to the driving shaft (6), is several. It is adjustable in stages.

In addition, a vertically elongated guide hole (50) is formed in the central portion of the front wall of the machine casing (1) to allow the rice ejecting port (47) to move up and down, and other than the front face of the machine casing (1). At the center of the three side walls, the small rice gutter (4
4) The guide screw shaft (51) protruding and fixed from the side wall of 4) is provided with a vertically elongated guide hole (52) through which the guide screw shaft (51) is vertically movable, and the small rice gutter (44) is provided so as to be vertically movable. Fix the small rice gutter (44) and the small rice outlet (47) to the machine frame (1) at the height position corresponding to the mounting height of the small rice receiving plate (43) by the lock nut (53) tightened to (51). It is configured to support.

Further, there is provided means for closing the guide holes (50) (51) formed in the machine casing (1). This means comprises a screen (55) made of a magnetic sheet wound in a roll around a core (54) elastically biased in the winding direction of each guide hole (50) (51) of the machine frame (1). Provided on the upper side and the lower side, the ends of the upper and lower screens (55) are connected to the small rice outlet (47) and the washers (56) of each lock nut (51), and the mounting height of the small rice gutter (44) is set. The upper and lower screens (55) are extended in accordance with the above, and each guide hole (50)
Each guide hole (50) is closely attached to the outer surface of (51).
(51) is configured to be closed.

This embodiment is constructed as described above, and the brown rice after hulling is supplied to the hopper (2) and the electric motor (5) is operated to operate the distributor (12) and the rice paddle (4).
3), the middle supporting plate (21) and the good brown rice receiving plate (20) are rotated integrally with the main shaft (6), and each sorting net (3) is caused to make a planetary motion to start the rice selection work.

The brown rice in the hopper (2) is supplied from the supply port (8) to the inside of the center of the distributor (12), is sent to the outside of the distributor (12) by centrifugal force, and is sent to each sorting net ( It is thrown into this inside from the upper end of 3).

The brown rice introduced into each of the sorting nets (3) clings to the inner peripheral surface by the revolution of the sorting nets (3), and is agitated by the rotation of the sorting nets (3).
While flowing down inside the sorting net (3), small rice with small grains first passes through the mesh of the sorting net (3) to be separated and removed to the outside of the sorting net (3), and finally the sorting net (3). The non-fine brown rice with large grains that do not pass through the mesh and are not separated and removed to the outside is discharged downward from the lower end of the sorting mesh (3).

The fine brown rice discharged downward from the lower end of the sorting net (3) falls on the upper surface of the good brown rice receiving plate (20) at the bottom of the sorting section and is subjected to centrifugal force to the outside of the good brown rice receiving plate (20). Sent to the good brown rice receiving gutter (32), this good brown rice receiving gutter (3
2) It is sent to the discharge port (40) by the fine brown rice scraping blade (33) circulating inside and is discharged to the outside from the good brown rice take-out port (38).

On the other hand, the small rice separated and removed to the outside of the sorting net (3) is the small rice that has passed through the mesh of the sorting net (3) above the small rice receiving plate (43). Small rice (almost good brown rice) that has fallen on the upper surface and has passed through the mesh of the sorting net (3) below the small rice receiving plate (43) falls on the upper surface of the middle receiving plate (21) at the bottom of the sorting section.

The small rice dropped on the upper surface of the small rice receiving plate (43) is
It is sent to the outside of the small rice receiving plate (43) by centrifugal force, dropped into the small rice gutter (44), and is discharged by the small rice scraping blade (45) circulating inside the small rice gutter (44). (4
6) and is discharged to the outside from the small rice outlet (47).

Nearly good brown rice dropped on the upper surface of the middle receiving plate (21) is sent to the outside of the middle receiving plate (21) by centrifugal force and dropped to the middle receiving gutter (32). (32) It is sent to the discharge port (41) by the inner scraping blade (33) circulating in the inside, and is discharged to the outside from the middle take-out port (39). Since the middle take-out port (39) is provided close to the good brown rice take-out port (38), almost good brown rice can be taken out separately or in a mixture with the good brown rice.

The small rice receiving plate (43) and the small rice receiving gutter (4
By adjusting the mounting heights of 4) and the small rice outlet (47), the removal rate of small rice can be adjusted without changing the rotation (revolution, rotation) speed of the sorting net (3). If the quality of brown rice supplied to 2) is poor and the proportion of small rice is high, the small rice receiving plate (43) and small rice receiving gutter (4)
4) and the mounting height of the small rice outlet (47) is adjusted to a low level to increase the small rice removal rate, so that the sorting net (3) above the small rice receiving plate (43) cannot completely remove the small rice. It is possible to prevent the small rice from flowing through the backing plate (43) and flowing down to the lower side, and to be mixed in the good brown rice or the good brown rice, and conversely, of the brown rice supplied to the hopper (2). If the quality is good and the proportion of small rice is small, the small rice receiving plate (43)
And by setting the mounting height of the small rice gutter (44) and the small rice outlet (47) to a high level and setting the small rice removal rate to a low level, the small mesh removing plate (43) is placed below the sorting net (3). It is possible to prevent good brown rice or good brown rice from passing through the mesh of the sorting net (3) before flowing down and mixing into the small rice. By thus adjusting the removal rate of small rice according to the quality of brown rice supplied to the hopper (2), high selection accuracy and efficiency can be obtained.

FIG. 7 is a side sectional view of a sorting section showing an embodiment of a planetary sorting type multi-stage rice sorting machine, in which a drive section (A) is provided at the bottom of a machine frame (1a) having a vertically long rectangular tube shape. The sorting unit (B1) is configured above the drive unit (A), and the other sorting units (B2) are stacked in multiple layers above the sorting unit (B1). The lower end of the driving shaft (6) of the sorting unit (B2) is the driving shaft (6) of the lower sorting unit (B1).
Of the electric motor (5), which is connected to the upper end of the drive shaft (6) through the shaft coupling (57) and is connected to the lower end of the main drive shaft (6) at the lower drive section (A). 10)
Is configured to be driven by the single electric motor (5) (driving source) to drive the sorting units (B1) and (B2). In addition, the good brown rice outlet (38) of the upper sorting section (B2)
And the middle take-out port (39) are connected to the good brown rice take-out port (38) and the middle take-out port (39) of the lower sorting section (B1) through the chutes (58) (59), respectively. The good brown rice and small rice selected in (B1) and (B2) are taken out of the machine through the good brown rice outlet (38) and the middle outlet (39) at the bottom. Furthermore, the sorting section (B
The hopper (2) of 2) is communicatively connected to the hopper (2) of the lower sorting section (B1) through a chute (62) provided with an equalization valve (61) at the inlet (60), and is connected to the uppermost stage. By supplying brown rice to the hopper (2) of the sorting section (B2), the brown rice is uniformly supplied to the hopper (2) of the lowermost sorting section (B1).

Since the structures of the driving unit (A) and the selecting units (B1) and (B2) other than the above are the same as the structures of the driving unit and the selecting unit shown in FIGS. 1 to 6, the same part numbers are used. Is attached and detailed description is omitted. Also, the sorting section (B1)
In (B2), the small rice receiving plate (43), the small rice gutter (44) and the small rice outlet (47) are omitted, and two kinds of good brown rice and small rice are selected. ) (B
By providing the small rice receiving plate (43), the small rice gutter (44), and the small rice outlet (47) in 2) in the same manner as the sorting section shown in FIGS. 1, 2 and 4, it is almost the same as small rice. It is possible to separate and select brown rice, and it is possible to select three types of good brown rice, almost good brown rice and small rice. In this case, the small rice outlet (47) of the upper sorting section (B2) is connected to the small rice outlet (47) of the lower sorting section (B1) so as to be sorted by each sorting section (B1) (B2). The chute for taking out the small rice from the bottommost small rice taking-out port (47) may be non-expandable, but it is preferable that the chute is expandable in view of simplifying the mounting height adjusting work.

As described above, the sorting sections (B1) (B
By providing 2) and increasing the number of screening nets (3) per rice sorter, it is possible to improve the processing capacity without increasing the throughput per screening net (3). It is not possible to allow it, and unlike the large size of the sorting net (3), it is not necessary to set the removal rate of small rice higher than usual in order to maintain and improve the sorting accuracy, and the sorting accuracy is maintained. Efficiency does not decrease for improvement.

FIG. 8 shows a distributor (1
It is a side surface sectional view of the upper part of the selection part showing the modified structure of 2),
This distributor (12a) is different from the above-mentioned one that disperses brown rice in a plane, and throws brown rice into each sorting net (3) from the central part that receives brown rice from the supply port (8) of the hopper (2). The bottom plate (13a) and the cover (14a) forming the distributor (12a) are provided with an inclination so that the outer portion is lowered, and the distributor (12a) is formed in a mountain shape. Further, by making the center of the bottom plate (13a) penetrating the main shaft (6) the apex, the supply amount to each of the plurality of sorting nets (3) can be made more effective, and after the hulling When rough rice is fed to the hopper (2) instead of unpolished rice in place of unpolished rice, rough padding is worse than that of unpolished rice. Distributor (1
2) It is possible to prevent clogging inside.

Further, as shown in FIG. 8, the upper bearing (9) of the driving shaft (6) provided inside the supply port (8) of the hopper (2) is provided at the upper part of the hopper (2), and the supply port ( 8)
The screw conveyor (6) that expands the passage of the grain in the section and rotates the supply port (8) integrally with the main shaft (6).
By providing 3) and forcibly discharging the grain from the supply port (8), clogging inside the supply port (8) can be prevented. In addition, reference numeral (63) in the drawing is an intake regulation cover which is mounted above the supply port (8) of the hopper (2) so as to be vertically movable and regulates the amount of injection into the supply port (8). ) And the distributor (12) to prevent clogging.

[0032]

Since the present invention is configured as described above, it has the following effects.

In the grain selection device of the planetary selection system, an intermediate partition plate (43) for partitioning the periphery of the selection net (3) into upper and lower parts is arranged in the selection part, and the size of the grain is large, medium, Since it is separated and sorted into small and three types, re-sorting for taking out good grains in small rice as in the past is not necessary.

Further, the partition plate (43) is provided so that the mounting height can be adjusted, and the removal rate of small rice is adjusted by adjusting the mounting height, so that the rotation speed of the conventional sorting net (3) is adjusted. In comparison with the one that adjusts the removal rate of small rice, the drive unit does not need a speed change mechanism, and the structure of this drive unit can be simplified.

By constructing a multi-stage type grain sorting device and increasing the processing capacity by increasing the number of sorting nets, it is possible to prevent the sorting accuracy from deteriorating due to an excessive amount of processing per sorting net. Also, it is possible to prevent a decrease in the collection rate of good brown rice.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a sorting unit.

FIG. 2 is an overall front view of a rice selection machine.

FIG. 3 is a plan cross-sectional view of a brown rice supply unit of a sorting unit.

FIG. 4 is a plan cross-sectional view of a rice picking unit of the sorting unit.

FIG. 5 is a plan cross-sectional view of a good brown rice removing unit of a sorting unit.

FIG. 6 is a plan view of a planetary motion mechanism unit of the selection unit.

FIG. 7 is a side sectional view of a multi-stage sorting unit.

FIG. 8 is a side sectional view showing a modified example of the grain supply unit of the sorting unit.

[Explanation of symbols]

 (3) Sorting net (5) Electric motor (6) Driving shaft (43) Xiaomi receiving plate (partitioning plate)

Claims (2)

[Claims] 1. A sorting method in which the grains supplied into the sorting net are separated and sorted into those that pass through the mesh of the sorting net and those that do not pass through the rotation and revolution of a cylindrical vertical rotary sorting net. In the grain selection device provided with a drive section and a drive section having a drive source for this selection section, an intermediate partition plate for partitioning the periphery of the selection net into upper and lower parts is arranged in the selection section, and the mounting height of the intermediate partition plate is increased. The grain selection device is characterized in that the height is adjustable. 2. A sorting method in which the grains fed into the sorting net are separated and sorted into those that pass through the mesh of the sorting net and those that do not pass through the rotation and revolution of a cylindrical vertical rotary sorting net. In the grain selection device provided with a drive unit and a drive unit including a drive source for the selection unit, the selection units are arranged in a vertically stacked manner and the drive unit is arranged below the lowermost selection unit. In addition, the lower end of the driving shaft of the upper sorting unit is interlocked with the upper end of the driving shaft of the lower sorting unit, and the lower end of the driving shaft of the lower sorting unit is interlocked with the drive source of the driving unit. A grain selection device.