JPS63143981A - 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] [Field of Industrial Application] The present invention is directed to a horizontal rotating sorting cylinder having a number of recesses on the inner circumferential surface, which separates brown rice from the rice that has been removed from the rice after hulling by a misbehaving mechanism. This invention relates to a grain sorting device that sorts grains by rotating the grains.

[Conventional technology]

A rotary sorting device that has been developed in recent years to sort and extract brown rice from rice that has fallen into disrepair after misbehaving is equipped with a brown rice receiving trough inside a horizontally cylindrical rotary sorting barrel with a number of recesses formed on its inner circumferential surface. As the rotary sorting cylinder rotates, the fallen rice is scraped up to a certain height and then falls to the bottom, forming a fluidized bed that repeats the flow while moving to the discharge side of the rotary sorting cylinder.
Utilizing the phenomenon that the brown rice that has fallen into the recess is raked up to a high position and then falls, and the paddy can only be raked up to a lower height than the brown rice, the paddy is raked up to a higher position and then falls. The brown rice is received in the brown rice receiving trough and taken out of the machine.

Among the prior art, Japanese Patent Application Laid-open No. 60-106545 discloses that one end of the rotary sorting cylinder is provided with a supply section for scraping brown rice and paddy, and the other end is provided with a paddy discharge section. on the other hand,
The thickness of the fluidized bed, which is proportional to the amount of dropped rice in the rotary sorting cylinder (the amount inside the cylinder), is maintained within an appropriate range to increase the amount of brown rice that enters the brown rice receiving gutter, thereby improving sorting performance. At the same time, in order to maintain the mixing rate of paddy entering the brown rice receiving trough below a certain level and increase the sorting volume, the amount in the barrel is kept approximately constant according to the detection results of the fluidized bed sensor plate installed inside the rotating sorting barrel. Proposals have been made to improve the sorting performance by increasing or decreasing the amount of paddy supplied to the delinquent mechanism or by controlling the rotational speed of the rotary sorting cylinder.

[Problem that the invention seeks to solve]

In this type of sorting device, as the rotary sorting cylinder rotates, the fallen rice that has entered the supply section is scraped up to a higher position by the brown rice that is stuck in the recess on the inner circumferential surface, and the brown rice is collected in the brown rice receiving trough. This fluidized bed moves toward the discharge section while repeating a flow in which the paddy that is received by the recess and incompletely fits into the recess is only scraped up to a low height and returns to the bottom of the rotary sorting river. .

Therefore, the thickness of the fluidized bed is thick in the rotary sorting cylinder near the supply section, and the brown rice in the fluidized bed is taken into the brown rice receiving gutter as it moves toward the discharge section. In this case, a large amount of paddy remains and the thickness of the fluidized bed tends to become thinner.

Moreover, on the lower surface side, the fluidized bed moves upward as it tries to be scraped up by the recesses on the inner circumferential surface of the rotary sorting cylinder. The rice falls downward, but since the fluidized bed sensor plate is disposed below it, the fallen rice slips into the underside of the fluidized bed sensor plate.

For this reason, in the fluidized bed at the point sandwiched between the inner peripheral surface of the rotary sorting cylinder and the lower surface of the fluidized bed sensor plate, the scraped rice moving upward and the scraped rice moving downward flow in opposite directions. I will have it.

Therefore, the lowest position of the fluidized bed ends at a position considerably higher than the bottom of the rotary sorting cylinder, so that the brown rice in the fluidized bed moves upward along the inner circumferential surface of the rotary sorting cylinder. The purpose of the present invention is to solve the problem that there is a problem that the sorting efficiency is not very high because there are fewer chances of the object trying to fit into the recess on the inner periphery.

Means for Solving Problem c] In order to achieve this object, the present invention provides a brown rice receiving trough in a rotary sorting cylinder for stacking, which has a number of recesses formed on its inner circumferential surface, and One end is provided with a supply section for scraped brown rice and paddy, and the other end is provided with a paddy discharge section. In a rotary grain sorting device that controls sorting by providing a fluidized bed sensor plate for detecting grain size, the fluidized bed sensor plate is disposed longitudinally from the supply section to the discharge section along the axial direction of the rotary sorting cylinder, The upper end of the fluidized bed sensor plate is rotatably supported at a position close to the top of the sowing side of the fallen rice, while a suitable length of the plate is placed near the top of the fluidized bed sensor plate near the feeding section. A passage window is drilled to allow the flow of the fallen rice to fall from the top of the raking side! A part of the IJ layer is returned from the upper surface of the temporary fluidized bed sensor to the bottom side of the rotary sorting cylinder through the passage window.

[Action/effect of the invention]

In this way, in the present invention, a passage window is provided near the top of the fluidized bed sensor plate that detects the amount of fallen rice in the rotary sorting cylinder, so that scraping is performed on the scraping side of the rotary sorting cylinder. A part of the fluidized bed formed by the fallen rice that is raised and falls without entering the brown rice receiving trough flows down along the upper surface of the fluidized bed sensor plate through the passage window, and flows down to the rotating sorting cylinder of the fluidized bed. This rotation reduces interference with the upward flow that is being lifted up. Moreover, the fallen rice flowing down the upper surface of the fluidized bed sensor plate reaches the bottom side of the rotary sorting cylinder below the lower edge of the fluidized bed sensor plate.
An opportunity is given to contact the recess in the inner circumferential surface of the rotary sorting cylinder from the bottom part.

In other words, the contact length of the fluidized bed with the inner circumferential surface of the rotary sorting cylinder along the rotational direction becomes longer, and the performance of rotary sorting is improved.

In particular, since the rate of contamination of brown rice in the fluidized bed is high on the side where the dropped rice is fed, the length of contact between the fluidized bed and the inner peripheral surface of the rotary sorting cylinder on the side of the feed side is increased to further increase the rate of contamination. This makes it possible to improve the sorting performance.

Furthermore, even if the fluidized bed sensor plate is formed longitudinally from the supply section to the discharge section, the fluidized bed sensor plate will detect the thickness of the fluidized bed at a position closer to the supply section where it is thicker. However, by passing a part of the thick fluidized bed to the upper surface of the fluidized bed sensor plate through a passage window drilled in the fluidized bed sensor plate, it is possible to connect the fluidized bed to the thinner discharge side of the fluidized bed. The thickness of the fluidized bed at the stable thickness point in the middle can be detected by the fluidized bed sensor slope.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The rice hulling sorting machine includes a horizontally long box-shaped wind sorting device 1, a hulling mechanism 2 placed on the upper left surface of the wind sorting device 1, and the grain sorting machine 1. The entire apparatus is composed of a rotary sorting mechanism 3 placed on the upper right side of the apparatus l.

The hulling mechanism 2 includes a case 4 with a paddy supply hopper 5;
A pair of misbehaving rolls 6.7 provided in the case 4, a manually openable shutter 8 provided between the misbehaving rolls 6.7 and the paddy supply hopper 5, and a paddy supply full control valve 9; and a lead roll 10, and the paddy supply amount adjustment valve 9.
is configured to be rotated by the first actuator 11, and can increase or decrease the amount of dropped rice supplied to the rotary sorting cylinder 24.

The wind selection device 1 is equipped with a suction dust exhaust fan 12 at its left end, an atmospheric air intake port I3 at its right end side, and a cross-flow fan 14 approximately at the center, and from the atmospheric air intake port I3. An air path 15° 16 is formed that passes through the cross-flow fan 14 and reaches the suction dust removal fan 12, and the cross-flow fan 1
In the middle of the air passage 16 from 4 to the suction dust exhaust fan 12,
Wind sorting unit 17 for the fallen rice falling from the hulling mechanism 2
However, air selection units 18 for brown rice from the rotary sorting mechanism 3 are provided in each of the air passages 15 extending from the atmospheric air intake port 13 to the cross-flow fan 14.

The fallen rice after the rice husks have been wind-sorted by the fallen rice wind sorting section 17 is transferred from the fallen rice gutter 19 with a spiral conveyor to the rotary sorting mechanism 3 by the grain lifting tube 20 of a packet type or a thrower set.
On the other hand, the brown rice that has been finished and sorted in the brown rice sorting section 18 is taken out of the machine from a brown rice gutter 21 with a spiral conveyor by a grain lifting cylinder 22 of a packet type or a thrower set.

On the other hand, the rotary sorting mechanism 3 includes a rotary sorting cylinder 24 horizontally disposed in upper and lower stages in a box-like case 23. It is rotatably supported by rollers 25, 25, and by rotationally driving these rollers 25 by a variable rotation speed motor 26, the re-rotating sorting cylinder 24 is moved in the left direction as shown by the arrow in FIG. It is configured to rotate at an appropriate speed.

The re-rotating sorting cylinder 24 has one end farther from the hulling mechanism 2 formed as an open type supply side 24a, and the other end closer to the hulling mechanism 2 formed as an open type discharge side 24b. A large number of recesses 27 are formed on the inner surface of each of the rotary sorting cylinders 24, and the recesses 27 are large enough to fit brown rice.

Further, in the re-rotating sorting cylinder 24, various receiving troughs such as a brown rice receiving trough are arranged so as to extend in the axial direction of the sorting cylinder. That is, in the re-rotating sorting cylinder 24, a brown rice receiving trough 28 having a spiral conveyor 29 inside is connected to the box-shaped case 23.
The mixed rice receiving channel 30, which also has a spiral conveyor 31 therein, is provided on the right side of the brown rice receiving channel 28, that is, on the side on the side where the fallen rice is scraped up inside the rotary sorting cylinder 24. It is mounted parallel to the brown rice receiving trough 28. The spiral conveyors 29, 31 in each of these receiving troughs 2B, 30 are also rotationally driven by the motor 26 to transfer the grains in the troughs from left to right in FIG.

The right side plate of the left and right side plates 28a and 28b in the brown rice receiving trough 28 in the re-rotating sorting cylinder 24, that is, the upper end of the front plate 28a located on the side of scraping up the fallen rice in the rotating sorting cylinder 24, and the mixing Finish adjustment plates 32.
32' are respectively attached via shafts 33 so as to freely swing in the direction of rotation of the rotary sorting cylinder 24, and both finishing adjustment plates 32 are rotated by the second actuator 34, and the brown rice receiving trough 28 It is configured to be able to control the swinging posture so as to control the degree to which grains enter the mixed rice receiving trough 30. On the other hand, the left rear side plate 28b of the brown rice receiving trough 28 extends so as to approach the inner circumferential surface of the rotary sorting cylinder 24.

A supply passage 35 is provided on the side surface of the grain lifting cylinder 20 for the fallen rice, through which the fallen rice lifted by the grain lifting cylinder 20 flows vertically. A distribution supply chute 1- extending into one end of the mixed rice receiving trough 30 in each of the re-rotating sorting cylinders 24 is connected to the upper and lower ends of the re-rotating sorting cylinder 24. By providing a distribution control valve in a portion opening into the passage 35, the rice scraped from the grain lifting tube 20 is distributed to both mixed rice receiving troughs 30 in approximately equal amounts. It should be noted that a switching valve is provided at the lower end of the supply passage 35 to switch to discharge the front part of the fallen rice to the outside.

Further, at the other ends of both mixed rice receiving troughs 30, mixed rice supply ports 30a into the supply side 24a of the rotary sorting cylinder 24 are provided.

Also, the upper rotary sorting cylinder 2 of the re-rotating sorting cylinder 24
The other end of the brown rice catcher 28 in the outlet chute 40
The brown rice receiver 112 in the lower rotary sorting cylinder 24
One end of the brown rice receiving trough 28 in the lower rotary sorting cylinder 24 is communicated with the supply trough 42 to the brown rice sorting section 18 via the outlet chute 41.

An annular weir plate 43 projecting inward is provided on the inner peripheral surface of the discharge side 24b of the re-rotating sorting cylinder 24, and a paddy tray is provided at the lower end of the discharge side 24b of the upper rotating sorting cylinder 24. While the chute 44 is provided, the lower rotary sorting cylinder 2
A raking cylinder 46 having a plurality of blades 45 on the inner surface is connected to the end of the discharge side 24b in 4, and a paddy chute 47 is disposed in the upper part of the sowing cylinder 46. The receiver connects the chutes 44 and 47 into one return passage 48
After that, it communicates with the paddy supply hopper 5 in the hulling mechanism 2.

Further, in the re-rotating sorting cylinder 24, a flow wJlii sensor plate 49 is rotatably provided at its upper end via a shaft 50, and the cross-sectional shape of the fluidized bed sensor plate 49 is set in accordance with the shaft 5.
The fluidized bed sensor plate 49 has a shaft 50 which is formed in a shape such that the side closer to zero is away from the inner periphery of the rotary sorting cylinder 24 and the lower end edge is closer to the inner periphery. An in-cylinder amount sensor 5 detects the thickness of the fluidized layer of dropped rice in the sorting cylinder 24, that is, the amount of dropped rice in the rotary sorting cylinder 24 (the amount in the cylinder) based on the rotation angle of the plate 49.
1.

An electrical control circuit (not shown) which receives the output signal from the in-shell quantity sensor 51 controls the opening/closing operation of the finishing adjustment plates 32, 32', the rotational speed of the rotary sorting cylinder 24, and the amount of dropped rice to be fed.

In the embodiment shown in FIG. 1, the fluidized bed sensor plate 49 is formed long from the supply section 24a to the discharge section 24b, but according to the present invention, the fluidized bed sensor plate 49 has an appropriate length extending from the supply section 24a toward the discharge section 24b. You can also set only A passage window 52 having an appropriate length L) is formed in the vicinity of the supply section 24a and below the shaft 50 of the fluidized bed sensor plate 49 toward the discharge section 24b. At this time, it is preferable that the passage window 52 is formed so as to straddle the bent portion having the "H"-shaped cross section above and below.

Due to the existence of this passage window 52, the fallen rice that is sown by the rotation of the rotary sorting cylinder 24 and which did not enter the brown rice catcher 28 and the mixing bed receiver fi30 falls into the rotary sorter cylinder 24. Next, a part of the fluidized bed A (indicated by the one-dot chain line and two-dot chain line in FIG. 2) formed by the rotation of the rotary sorting cylinder 24 flows down the upper surface of the fluidized bed sensor plate 49 and flows from its lower edge to the corresponding part. It is guided to the bottom of the rotary sorting cylinder 24.

Further, the passage window 52 is provided on the upper surface of the fluidized bed sensor plate 49, that is, the surface facing the radially inner side of the rotary sorting cylinder 24.
A plurality of glue-drip plates 53 are provided in a protruding position at a lower position, and a portion of the fluidized bed indicated by the two-dot chain line in FIG. Sometimes, the tendency of the fluidized bed A to move toward the discharge section 24b is adjusted. Each lead rib plate 53 has an upper end close to the supply section 24a and a lower end close to the discharge section 24b (if it is arranged obliquely and the inclination angle is small with respect to the shaft 50, it will not move toward the discharge section 24b side). On the other hand, when the inclination angle is approximately right angle, or when the lead rib plate 53 is tilted so that the lower end side approaches the supply section 24a, the tendency of the floating material to move toward the discharge section 24b is reduced. It is possible to increase the chances of brown rice fitting into the recesses 27 on the inner circumferential surface of the rotary sorting cylinder 24 by suppressing this and increasing the residence time of the fluidized bed A within the rotary sorting cylinder 24.

With this configuration, when paddy is fed into the paddy supply hopper 5 in the hulling mechanism 2 during the de-sexing and sorting work of paddy, the scraped rice that has been misbehaved in the hulling mechanism 2 will be transferred to the scraped rice winding section immediately below it. After the rice husks are removed in step 17, the rice husks are removed.
From there, a vertical feeding chute 3 is sent to the grain lifting cylinder 20.
5, and as it flows down the supply chute 35, it is distributed by a distribution valve so that substantially equal amounts enter both distribution and supply chutes.

In this way, the fallen rice distributed to both distribution and supply chutes is
After entering the other end of the mixed rice receiving trough 30 in both sorting cylinders 24, the mixed rice is supplied from the mixed rice supply port 30a at one end of both mixed rice receiving troughs 30 to the supply side 24a in both sorting cylinders 24.

The fallen rice supplied into both sorting cylinders 24 is scraped up to a height by the rotation of the sorting cylinders in the left direction, and then falls to the bottom repeatedly, forming a fluidized bed with the same thickness as the rice is discharged. It is transferred toward the side 24b. During this fluid transfer, the brown rice in the fallen rice is lifted up to a relatively high position while fitting into the recess 27 and then falls, and the paddy among the fallen rice undergoes a movement of falling from a position lower than the brown rice. By doing this, only brown rice will enter the brown rice receiving trough 28, and some paddy will enter the mixed rice receiving trough 30 along with the brown rice.

The brown rice that has entered the brown rice receiving channel 28 is sent to the outlet chute 40.41.
The brown rice is then sent to the brown rice sorting section 18 via the supply gutter 42, where it is finished and sorted to remove small grains, and then taken out of the machine by the grain lifting cylinder 22, while being sent to the mixed rice receiving gutter 30. Some of the unhulled brown rice that has entered is supplied to the supply side 24a in both sorting cylinders 24 again, together with the scraped rice from the hulling mechanism 2, and is sorted and cultivated again.

Furthermore, the dropped rice moving inside the two sorting cylinders 24 toward the discharge side 24b is sorted along the way so that the brown rice enters the brown rice receiving gutter 28 and the mixed rice receiving gutter 30 as described above. , as it approaches the discharge side 24b, it becomes almost only paddy, and the discharged paddy from the discharge side 24b of the upper sorting cylinder 24 overflows the annular weir plate 43, and then the paddy receiver flows into the chute 44; The paddy enters the paddy supply hopper 5 in the hulling mechanism 2 through the recirculation passage 48, while the discharged paddy from the discharge side 24b of the lower sorting cylinder 24 overflows the annular weir plate 43 and passes through the plurality of scraping blades. 45, the paddy receiver enters the chute 47, and this paddy receiver enters the paddy supply hopper 5 in the hulling mechanism 2 from the chute 47 via the recirculation passage 48. The act of obscenity is carried out again.

The rotation angle of the shaft 50 is determined when the fluidized bed sensor plate 49 disposed in both rotary sorting cylinders 24 is in contact with the amount of dropped rice in the rotary sorting cylinders 24, that is, the upper surface of the fluidized bed A. By detecting the change in the fluidized bed, the thickness of the fluidized bed is detected, and this is detected by the output signal of the in-shell amount sensor 51 via an electric control circuit (not shown) to the finishing adjustment plate 32, 32'. The opening/closing operation of the rotary sorting cylinder 24 is controlled, the rotational speed of the rotary sorting cylinder 24 is controlled, and the first actuator 11 in the paddy supply amount control valve 9 is rotated to adjust the amount of dropped rice supplied to the rotary sorting cylinder 24. It is possible.

At this time, part of the portion of the fluidized bed that falls toward the bottom of the rotary sorting cylinder 24 passes through the passage window 52 in the fluidized bed sensor slope 49 and flows down the upper surface of the fluidized bed sensor plate 49. , interference with the upward flow portion of the flow JEA that is about to be scraped up by the rotation of the rotary sorting cylinder 24 is reduced.

In addition, the fallen rice that has flown down the upper surface of the fluidized bed sensor plate 49 reaches the bottom side of the rotary sorting cylinder 24 below the lower edge of the fluidized bed sensor temporary 49, so that from the bottom part to the inner circumference of the rotary sorting cylinder. An opportunity will be provided to contact the recesses in the surface. In other words, the contact length of one flow layer with the inner circumferential surface along the rotational direction of the rotary sorting cylinder becomes longer, and the performance of rotary sorting is improved.

In particular, since the mixing rate of brown rice in the fluidized bed A is high on the side of the supply section 24a of dropped rice, the length of contact between the fluidized bed A and the inner peripheral surface of the rotary sorting cylinder 24 on the side of the supply section 24a is lengthened. By that,
This makes it possible to further improve the sorting performance.

In addition, in the present invention, a mixed rice receiving trough 30 is provided in the rotary sorting cylinder 24.
Needless to say, it can also be applied to a type that does not have a .

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional front view of a rice huller and sorter, FIG. 2 is a sectional view cut along nn in FIG. 1, and FIG. FIG. 1... Wind sorting device, 2... Hulling mechanism, 3...
Rotary sorting mechanism, 24...Rotary sorting cylinder, 24a...
... Supply section, 24b ... Discharge section, 26 ... Motor, 27 ... Recess, 28 ... Brown rice receiving gutter, 30.
...mixed rice catcher, 32.32'...finish adjustment plate,
49... Fluidized bed sensor handling, 51... In-body amount sensor, 52... Passing window, 11... First actuator, 34... Second actuator, 53...・
Read and write board.

Claims (1)

[Claims] (1) A brown rice receiving trough is provided in a horizontal rotating sorting cylinder with a number of recesses formed on the inner circumferential surface, and a feeding section for the scraped rice of brown rice and paddy is provided at one end of the rotating sorting cylinder. , a rotary grain type is provided with a paddy discharge part at the other end, and a fluidized bed sensor plate is installed in the rotary sorting drum to detect the thickness of the fluidized bed of the rice that has been washed away inside the rotary sorting drum for sorting control. In the grain sorting device, a fluidized bed sensor plate is arranged longitudinally along the axial direction of the rotary sorting cylinder from the supply section to the discharge section, and the upper end of the fluidized bed sensor plate is placed on the side where the scraped rice is scraped up. While the fluidized bed sensor plate is rotatably supported at an upper position, a passage window of an appropriate length is bored near the supply section at an upper position of the fluidized bed sensor plate, and a passage window of an appropriate length is provided at an upper position of the fluidized bed sensor plate, so that a passage window of an appropriate length is formed at an upper position of the fluidized bed sensor plate. A rotary grain sorting device characterized in that a part of the falling fluidized bed is returned from the upper surface of the fluidized bed sensor plate to the bottom side of the rotary sorting cylinder through the passage window.