JPS6142386A - Rotary type cereal grain selector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a rotary grain sorting device for sorting brown rice from mixed rice after hulling.

[Conventional technology]

A rotary sorting cylinder with a number of recesses formed on its inner circumferential surface is installed horizontally, and one end of the sorting cylinder is configured as a supply side for a mixture of brown rice and paddy, and the other end is configured as a paddy discharge side. On the other hand, a rotary grain sorting machine in which a brown rice receiving trough with an open top surface extending in the axial direction of the sorting barrel is disposed in the sorting barrel is disclosed in Japanese Patent Laid-Open No. 49-24746 as a prior art. It is known from etc.

[Problem that the invention seeks to solve]

However, in this rotary grain sorter, the mixed rice supplied into the sorting barrel is scraped up to a height created by the rotation of the sorting barrel, and then falls to the bottom, forming a fluidized bed while the rice is discharged from the discharge side. During the transfer, the brown rice in the mixed rice fits into the recess and is lifted up to a relatively high position and then falls, and the paddy in the mixed rice falls from a lower position than the brown rice. Since the brown rice that falls from a high position is caught and taken out by the brown rice receiving gutter using movement, in order for this sorting action to be performed correctly,
The fluidized bed requires a certain thickness.

In other words, when the thickness of the fluidized bed inside the sorting barrel is thin, a phenomenon occurs in which the mixed rice dances up inside the sorting barrel and the brown rice cannot fit into the recesses, making the sorting action unstable and the brown rice receiving As the amount of paddy that enters the gutter increases, the sorting accuracy will decrease.

However, in the prior art, the mixed rice of paddy and brown rice is supplied into the supply side at one end of the sorting cylinder, and is discharged from the discharge side at the Ih end, so that it is difficult to start the sorting work. In this case, it takes a certain amount of time from the time when mixed rice is started to be fed to the supply side of the sorting cylinder until a constant fluidized bed is formed in the entire axial direction of the sorting cylinder.

During this time, the sorting action in the sorting barrel is unstable, and there is a problem in that a considerable amount of paddy enters the brown rice receiving trough, and the paddy is mixed in with the brown rice taken out from the brown rice receiving trough, and the end of the sorting process In this method, a considerable amount of brown rice remained in the brown rice receiving trough, and this had to be shaken out by hand.

The present invention enables brown rice and paddy entering the brown rice receiving trough to be returned to the sorting barrel in an unstable state until a certain fluidized bed is formed in the sorting barrel at the beginning of the sorting work. In addition to making it possible to automatically return the brown rice to the brown rice that is taken out from the brown rice receiving trough,
When the sorting work is completed, the remaining brown rice in the brown rice receiving trough can be automatically discharged.

[Means for solving problems]

For this reason, the present invention horizontally installs a rotary sorting cylinder with a number of concave portions formed on its inner peripheral surface, and places one end of the sorting cylinder on the supply side of the mixed rice of brown rice and paddy, and the other end of the sorting cylinder as the side for supplying the mixed rice of brown rice and paddy. In the rotary grain sorting device, an open-face brown rice receiving trough is provided in the sorting barrel and extending in the axial direction of the sorting barrel, respectively, on the discharge side of the sorting barrel. A mixed rice supply gutter is provided in parallel to the brown rice receiving gutter, and the outlet of the mixed rice feed gutter is
While looking into the supply side of the sorting barrel, a bottom of the brown rice receiving gutter is provided with a drop opening extending into the mixed rice feeding gutter in the longitudinal direction of the brown rice receiving gutter,
A bottom valve is provided at the spoiler opening so that it can be opened and closed freely, and a sensor is provided in the sorting barrel to detect the thickness of the fluidized bed of mixed rice in the sorting barrel, and the sensor and the bottom valve are connected to each other. The bottom valve is configured to close when the thickness of the fluidized bed in the sorting barrel exceeds a certain level.

[Effect]

In such a configuration, when a certain fluidized bed is not formed in the sorting barrel at the beginning of the sorting operation, the bottom valve for the drop opening at the bottom of the brown rice receiving trough is open, and the sorting barrel is closed. The brown rice and paddy that enter the brown rice receiving trough as it rotates enters the mixed rice supply trough through the drop opening at the bottom, and is supplied again to the supply side in the sorting cylinder by this mixed rice supply trough, repeating the cycle. Therefore, brown rice with paddy mixed in is not taken out from the brown rice receiving trough during this time.

Then, as time passes and a fluidized layer of a certain thickness is formed inside the sorting barrel, the sorting action becomes stable and no paddy enters the brown rice receiving trough, and the detection signal from the sensor is In response to this, the bottom valve for the drop opening at the bottom of the brown rice receiving gutter automatically closes, so that from then on, the brown rice that enters the brown rice receiving gutter is taken out of the machine from the brown rice receiving gutter.

When the sorting work is finished and the supply of mixed rice to the sorting cylinder is stopped, the thickness of the fluidized bed in the sorting cylinder becomes thinner, and a sensor automatically opens the bottom valve for the bottom passage in the brown rice receiving gutter. Therefore, by continuing to rotate for a while in this state, all of the remaining brown rice in the brown rice receiving trough will be discharged from the drop opening through the mixed rice supply trough and into the sorting barrel.

〔Effect of the invention〕

Therefore, according to the present invention, when the sorting action is unstable at the beginning of the sorting work, the brown rice and paddy entering the brown rice receiving trough are circulated within the sorting barrel, and when the sorting action is stabilized, the brown rice enters the brown rice receiving trough. Since it is possible to automatically take out the brown rice outside the machine and to release the remaining brown rice in the brown rice receiving trough at the end of the sorting process according to the sensor, no manual labor is required for these operations. Therefore, work efficiency can be improved.

Furthermore, in the present invention, when the sorting operation is in an unstable state at the beginning, the brown rice and paddy entering the brown rice receiving trough are circulated only within the sorting barrel via the mixed rice supply trough. , compared to the case where the brown rice and paddy entering the brown rice receiving trough are taken out of the sorting barrel at the beginning of sorting work and then returned to the sorting barrel, the sorting action inside the sorting barrel is stabilized. This has the effect of shortening the time it takes to process the rice and reducing damage to the brown rice during the circulation.

〔Example〕

Below, we will explain an example in which the present invention is applied to a double-barrel type rotary sorting device for brown rice in a hulling machine.
The figure shows the entire Ishin front view of the rice huller, and this rice huller is
A horizontally long box-shaped wind speed value f1, a de-sexing device 2 placed on the upper left surface of the wind selection device 1, and a double-barrel type rotary sorting device 3 placed on the upper right surface of the wind selection device 1 The whole is composed.

The de-sexing device 2 includes a case 4 with a paddy supply hopper 5;
It consists of a pair of stripping rolls 6.6 provided in the case 4, and a manually opened/closed shutter 7 provided between the stripping rolls 6.6 and the paddy supply hopper 5.

The wind sorting device 1 has a suction dust exhaust fan 8 at its left end.
An atmospheric air intake port 9 is provided on the right side surface, and a cross-flow fan 10 is provided approximately in the center, and air paths II, 12 extend from the atmospheric air intake port 9 to the suction dust removal fan 8 via the cross-flow fan 10. In the air passage 12 from the cross-flow fan 0 to the suction dust removal fan 8,
A wind selection unit 13 for mixed rice falling from the rotary sorting device 3 is provided in the air passage 11 extending from the atmospheric air intake port 9 to the cross-flow fan IO, and a wind selection unit 14 for brown rice from the rotary sorting device 3 is provided, respectively. At the lower part of the mixed rice wind sorting section 13, there are a mixed rice trough 15 with a spiral conveyor and a shina rice trough 16 with a spiral conveyor, into which the mixed rice after the rice husks have been wind-selected from the desiliconized rice are placed.
Furthermore, a brown rice gutter 17 with a spiral conveyor is provided at the lower part of the brown rice winding section 14, and a small rice gutter 18 with a spiral conveyor is provided in the middle of the air path 11.

and both desiliconization rolls 6.6 in the desiliconization device 2,
The suction and dust removal fan 8, the cross-flow fan 10, and the spiral conveyors in the various troughs are rotationally driven by a belt (not shown) transmitted from a motor 19 provided at the bottom of the air passage 11 to the cross-flow fan 10. Furthermore, a bucket-type conveyor 20 is installed at one end of the mixed rice trough 15 to transport the mixed rice in the mixed rice trough 15 in a substantially vertical manner.

On the other hand, the multi-body type rotary sorting device 3 has a box-like case 23
No. 1 i installed horizontally in two levels, upper and lower! A separate cylinder 21 and a second sorting cylinder 22 are provided, and both the sorting cylinders 21.22 have a pair of left and right rollers 24, 24.2 protruding from the inner surface of the box-shaped case 23.
5.25 is rotatably supported, and these rollers 24
．． 25 is rotationally driven by the motor 19, so as to rotate at an appropriate speed in the left direction indicated by arrow A in FIGS. 2 and 4.

The two sorting cylinders 21, 22 have one end far from the desexing device 2 connected to an open supply side 2'', 22', and the other end close to the desexing device 2 connected to an open discharge side 21'', 22''. A large number of recesses 26 and 27 are formed on the inner surface of each of the recesses 26 and 27, each having a size large enough to fit brown rice.

Further, in both sorting cylinders 21 and 22, various receiving troughs such as brown rice receiving troughs are arranged so as to extend in the axial direction of the sorting cylinders.

That is, inside the first sorting cylinder 21, there is a spiral conveyor 2.
9 is installed between the face plates 30 and 31 which are removably attached to the box-shaped case 23, and the brown rice receiving channel 28 is installed on the right side of the brown rice receiving channel 28, that is, in the 1iI separate barrel 21. A mixed rice supply gutter 32, which also has a spiral conveyor 33 therein, is installed parallel to the brown rice receiving gutter 28 between the face plates 30 and 31 on the side where the rice is thrown up. Further, inside the second sorting cylinder 22, a brown rice receiving trough 34 having a spiral conveyor 35 inside is mounted between face plates 36 and 37 which are detachably attached to the box-shaped case 23. On the right side of the brown rice receiving gutter 34, that is, on the upper side of the second sorting cylinder 22 where the mixed rice is mixed, there is a mixed rice supplying gutter 38, which also has a spiral conveyor 39 therein, and is connected to the face plate 36 in parallel with the brown rice receiving gutter 34. It is mounted between 37 spaces. In addition, the spiral conveyor 29 in each of these receiving troughs 2B, 32, 34, 38
, 33.35.39 also has a heald (
(not shown) is rotatably driven by a power transmission to transport grains in the trough from left to right in FIG.

An adjustment plate 40.41 is provided at the upper end of the side plate on the side for scraping up mixed rice in the sorting cylinder among the left and right side plates of the brown rice receiving trough 28.34 in both the sorting cylinders 21.22, and is provided with an adjusting plate 40.41 that is freely movable in the rotational direction of the sorting cylinder. Double-sided plates 30, 31, 36, 37 so as to swing to
The mixed rice supply gutter 32 in both sorting cylinders 21, 22 is attached via an adjustment shaft 42, 43 rotatably mounted between
．． Adjustment plates 44 are also installed at the two ends of the side plate on the side for scraping up mixed rice in the sorting cylinder among the left and right side plates in 38.
．． 45 is mounted via adjustment shafts 46, 47 rotatably mounted between the double-sided plates 30, 31, 36, 37 so as to freely swing in the rotational direction of the sorting cylinder.

A supply passage 48 is provided on the side surface of the packet-type conveyor 20 for the mixed rice, through which the mixed rice lifted by the bucket-type conveyor 20 flows vertically, and the supply passage 48 has a midway portion. and a distribution supply chute 49.5 at its lower end that extends into the other end of the sorting cylinder discharge side 21'', 22' of the mixed rice receiving troughs 32, 3B.
0, while in this supply passage 48, the first
The upper distribution supply chute 49 to the sorting cylinder 21 is connected to the supply passage 4.
A distribution valve 51 having a pivot 52 is provided at the lower edge of the opening 49' in the interior of the distribution valve 51, and by rotating the distribution valve 51,
The sorting cylinder supply side 21' in both the mixed rice fIt supply troughs 32, 3B is arranged so that the mixed rice flowing down in the supply passage 48 is distributed approximately equally to the redistribution supply chute 49,50.

At the other end of 22' there is a supply side 21' of the sorting cylinder 21.22.
, 22' are provided with mixed rice supply ports 53, 54, respectively.

Further, the other end of the sorting cylinder supply side 21' of the brown rice receiving trough 28 in the first sorting cylinder 21 is connected to the sorting cylinder supply side 21' of the brown rice receiving trough 34 in the second sorting cylinder 22 via the outlet chute 55.
The other end of the sorting cylinder supply side 22' of the brown rice receiving gutter 34 in the second sorting cylinder 22 is connected to the feed gutter 57 to the brown rice winding section 14 through the outlet chute 56. Communicate.

Annular weir plates 58 and 59 protruding inward are provided on the inner circumferential surface of the discharge side 21# of the first sorting cylinder 21 and the inner circumferential surface of the discharge side 22'' of the second sorting cylinder 22, respectively. At the bottom of the discharge side 21# of the sorting cylinder 21, there is a chute 60 for receiving the paddy.
On the other hand, a raking cylinder 61 having a plurality of blades 62 on the inner surface is connected to the end of the discharge side 22# of the second sorting cylinder 22, and a chute is installed in the upper part of the sowing cylinder 61. After the chutes 60 and 63 are merged into one merging gutter 64, these paddy receivers are connected to the dehulling device 2.
It is connected to the paddy supply hopper 5 at .

Furthermore, a brown rice receiving trough 28 in both the sorting cylinders 2] and 22;
．． 34 is provided with a droplet 65° 66 that opens into the mixed rice supply gutter 32, 38, and is connected to the brown rice receiving gutter 2.
8. Provided along the length of 34, the opening 65.
66 are provided with bottom valves 67.6B whose openings 65.66 are opened and closed by rotating valve shafts 69, 70, respectively.

Also, in both the sorting cylinders 21 and 22, there is a mixed rice supply gutter 3.
Sensor shafts 78 and 79 extending parallel to the axial direction of the sorting cylinder are located on the scraping side of the sorting cylinder with respect to 2 and 3B.
are rotatably supported between the double-sided plates 30, 31.36°37, and the sorting cylinder supply side 2
1' and 22' have an appropriate length l) in the axial direction of the sorting cylinder.
Sensor plates 80.81 each having a width of 2 are suspended so that the mixed rice flowing down in the fluidized bed comes into contact with the surfaces of both sensor plates 80.81 on the fluidized bed side.

The sensor shaft 78 in the first sorting barrel 21 and the valve shaft 69 for the bottom valve 67 are connected when the bottom valve 67 is open and the sensor plate 80 rotates to the right when the sensor plate 80 is hanging down approximately vertically. While the bottom valve 67 is connected via a related mechanism 82 so as to be closed, the sensor plate 81 hangs down approximately vertically to connect the sensor shaft 79 in the second sorting barrel 22 and the valve shaft 70 for the bottom valve 68. When the bottom valve 68 is open and the sensor plate 81 is rotated to the right, the bottom valve 68 is connected via a related mechanism 83 so as to close the bottom valve 68.

Incidentally, drop lowers 3.74 having bottom valves 75.76 that can be opened and closed are also provided at the bottoms of both mixed rice supply troughs 32.38, and these bottom valves 75.76 can be operated individually or simultaneously by manual operation. It is opened and closed.

During the de-sexing and sorting work of paddy, when the paddy is fed into the paddy supply hopper 5 in the de-sexing device 2, the mixed rice de-sexed in the de-sexing device 2 is cleaned of rice husks in the mixed rice wind sorting section 13 immediately below it. After that, the rice enters the mixing gutter 15, from where it is sent to the upper end of the vertical supply passage 48 by the packet type conveyor 20, and as it flows down in this supply passage 48, it passes through the distribution valve 5.
1, it is distributed so that approximately equal amounts are entered in both distribution and supply shoes) 49.50.

The mixed rice distributed approximately equally to both the distribution and supply chutes 49.50 in this way is distributed to the other ends of the sorting cylinder discharge sides 21'' and 22# of the mixed rice supply gutter 32.38 in both the sorting cylinders 21.22. After entering, the mixed rice is supplied to the supply side in both sorting cylinders 21, 22 from mixed rice supply ports 53, 54 at one end of both mixed rice supply troughs 32, 38.

The mixed rice supplied into both sorting cylinders 21 and 22 is scraped up to a height created by the leftward rotation of the sorting cylinders, and then falls to the bottom while repeating the flow until it reaches the discharge sides 21", 22.
In the course of this fluid transfer, the brown rice in the mixed rice is lifted up to a relatively high position while fitting into the recesses 26 and 27, and then falls, and the paddy in the mixed rice is By performing the movement of falling from a position lower than the brown rice, only brown rice enters the brown rice receiving trough 28.34, and some paddy along with brown rice enters the mixed rice receiving trough 32.3B.

In this case, at the beginning of the sorting operation, both sorting cylinders 21 and 22
If a certain fluidized bed is not formed within the brown rice receiving trough 28.34, paddy will also enter the brown rice receiving trough 28.34, but in this state both sensor plates 80, 111 in the re-sorting river
As shown by the solid line in the figure, the bottom valves 67 and 68 are approximately vertical, so the bottom valves 67 and 68 are open, so both brown rice receiving channels 2B and
All of the brown rice and paddy entering 34 flow out from the droplet 65.66 to the mixed rice (HA feed gutter 32.38), and then are supplied to the mixed rice feed gutter 32, 38 through the mixed rice feed gutter 32, 3B. feed side 21' in the sorting cylinder 21.22 with mixed rice;
Since the circulation supplied to 22' is repeated, brown rice is not taken out of the machine.

Then, a mixed rice fluidized bed of a constant thickness is formed in both sorting cylinders 21 and 22 as shown by the two-dot chain line in Fig. 4, and the sorting action is stabilized, and only brown rice is placed in both brown rice receiving channels 2B and 34. The sensor plate 80.8 comes into contact with this fluidized bed.
1 escapes and rotates to the right as shown by the two-dot chain line, the bottom valves 67 and 68 associated with this automatically close, and from then on, the brown rice receiving troughs 2B, 34. The entering brown rice is sent to the brown rice sorting section 14 via the outlet chute 55, 56 and the supply gutter 57, where it is finished and sorted to remove small rice, and then taken out of the machine by a packet conveyor 77. It is possible.

In addition, the inside of both sorting cylinders 21 and 22 are arranged on the discharge sides 21' and 22.
As the mixed rice moves towards #, on the way, the brown rice passes through the brown rice receiving channels 2g and 34 and the mixed rice receiving channel 32 as described above.
, 3B, the discharge side 21”
, as it approaches 22", it becomes almost only paddy, and the mixed rice on the discharge side 21# of the first sorting 'rR21 is placed in chute 6.
0 into the paddy supply humper 5 in the dehulling device 2 via the merging bridge 64, and the discharge side 22# of the second sorting cylinder 22.
After the mixed rice is once lifted to the upper part by the plurality of raking blades 62 on the inner surface of the raking cylinder 61, the paddy receiver enters the chute 63, and this paddy receiver is transferred from the chute 63 to the merging tank 64.
By entering into the chaff supply hopper 5 of the dehulling device 2 through the dehulling device 2, the dehulling action is performed again in the dehulling device 2.

When the above-mentioned sorting operation is completed and the supply of mixed rice to both sorting cylinders 21.22 is stopped, the thickness of the fluidized bed in both sorting cylinders 21.22 becomes thinner, and accordingly, the sensor plates 80.81 returns to its original position and rotates, opening the bottom valve 67.6B.
will open automatically, and by continuing to rotate for a while in this state, all the remaining brown rice in both brown rice receiving troughs 28.34 will be sorted out from the drop opening 65.66 through the mixed rice supply trough 32.38. It is discharged into the shell 21,22.

In addition, although the above embodiment was applied to a multi-barrel type rotary sorting device using two sorting barrels, the present invention is not limited to this, but can also be applied to a single-barrel rotary sorting device using one sorting barrel. Needless to say, it can be applied to type sorting equipment, and a non-contact type sensor may be used instead of the illustrated contact type sensor for detecting the thickness of the fluidized bed. In this case, the bottom valve of the brown rice receiving trough in each sorting cylinder may be opened and closed by one fluidized bed thickness detection sensor installed in one sorting cylinder, and furthermore, the sensor and the bottom valve may be operated to open and close. The connection is not limited to the mechanical connection in the embodiment, but may also use electric or hydraulic related means.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional front view of a rice huller and sorter, and FIG. 2 is a ll-Tll side view of FIG.
The figure is a mm--m view of FIG. 2, and FIG. 4 is an enlarged view of the main part of FIG. 2. 1... wind selection device, 2... desexing device, 3...
Rotary sorting device, 21.22... sorting cylinder, 21',
22'... Supply side, 21', 22'... Discharge side, 26.27... Concavity, 28.34... Brown rice receiving channel, 32.38... Mixing Rice supply gutter, 65.66・
... drop opening, 67.68 ... bottom valve, 78.79
...sensor axis, 80.81...sensor plate,
82.83...Related organizations.

Claims (1)

[Claims] (1) A rotary sorting cylinder with many recesses formed on its inner circumferential surface is installed horizontally, one end of the sorting cylinder is on the supply side for the mixed rice of brown rice and paddy, and the other end is used for discharging the paddy. In a rotary grain sorting device, a brown rice receiving trough with an open top surface extending in the axial direction of the sorting barrel is arranged in the sorting barrel, and mixed rice is placed in the sorting barrel. A supply gutter is provided in parallel with the brown rice receiving gutter, and the outlet of the mixed rice feeding gutter looks into the supply side of the sorting cylinder, while the bottom of the brown rice receiving gutter includes:
A drop port opening into the mixed rice supply gutter is provided along the longitudinal direction of the brown rice receiving gutter, and a bottom valve is provided in the drop port so as to be openable and closable. A sensor is provided for detecting the thickness of the fluidized bed of mixed rice in the sorting barrel, and the sensor and the bottom valve are connected so that the bottom valve closes when the thickness of the fluidized bed in the sorting barrel exceeds a certain level. A rotary grain sorting device featuring: