JPS63156580A - 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 relates to a rotary grain sorting device used, for example, to sort brown rice from crushed rice, which is a mixture of paddy and brown rice after hulling. It is something.

[Conventional technology]

A rotary sorting tube with a number of concave portions formed on its inner circumferential surface is installed horizontally, one end of the rotary sorting tube is placed on the supply side for the scraped rice between paddy and brown rice, and the other end is placed on the paddy discharge side. A rotary grain sorting device in which a brown rice receiving trough extending in the axial direction of the rotary sorting tube is arranged in the rotary sorting tube is disclosed in Japanese Patent Application Laid-Open No. 49-24746 as a prior art. has been disclosed.

This rotary grain sorting device repeats a flow in which the fallen rice supplied to the supply side at one end of the rotary sorting tube is scraped up to a height by the rotation of the rotary sorting tube, and then falls to the bottom. During the transfer to the discharge side at the other end while forming a layer, the brown rice among the fallen rice is lifted up to a relatively high position while being stuck in the recess, and then falls, and the unhulled rice among the fallen rice is transferred to the discharge side at the other end. The method utilizes the motion of falling from a lower position than the brown rice to catch and take out the brown rice falling from a higher position into a brown rice receiving gutter. In this case, the sorting device of the prior art It is proposed to tilt the sorting cylinder so that the discharge side of the rotary sorting cylinder is lower than the supply example.

[Problem that the invention seeks to solve]

As in this prior art, if the rotary sorting tube is tilted so that the discharge side of the rotary sorting tube is lower than the supply side, the rotation of the rotary sorting tube is continued for a while at the end of the sorting operation, so that the rotary sorting can be carried out. The fallen rice remaining in the cylinder can be discharged from the discharge side.

However, the inclination angle in the rotary sorting cylinder of the prior art is
Since it is fixed, if you set the angle of inclination to a large value,
While it is possible to shorten the time for discharging the remaining scraped rice in the rotary sorting cylinder at the end of the work, it also increases the speed at which the scraped rice supplied to the supply side of the rotary sorting cylinder during sorting is transferred to the discharge side. As the overall thickness of the fluidized bed of fallen rice in the rotary sorting cylinder becomes thinner, the fallen rice that falls after being scraped up to the height created by the rotation of the rotary sorting cylinder is reduced to the bottom of the rotary sorting cylinder. The scattering and/or dancing phenomenon of brown rice trying to fit into the recesses or brown rice that has been fitted into the recesses being pushed out of the recesses increases, and the number of brown rice that fits into the recesses decreases, so it is difficult to sort brown rice. In addition, if the inclination angle of the rotary sorting tube is set to a gentle angle close to horizontal, the speed at which the rice that has slipped inside the rotary sorting tube is transferred to the discharge side during sorting work will be slow. Although the thickness of the fluidized bed of washed-out rice can be maintained thick, it takes a long time to discharge the remaining washed-off rice in the rotary sorting cylinder at the end of the work.

In other words, the inclination angle of the rotary sorting tube has a conflict between shortening the time for discharging the residual rice in the rotary sorting tube and improving the brown rice sorting ability and sorting consistency. A sorting device cannot satisfy both of these requirements.

The present invention solves this problem.

[Means for solving problems]

For this reason, the present invention horizontally installs a rotary sorting tube with a number of concave portions formed on its inner peripheral surface, and places one end of the rotary sorting tube on the supply side of the scraped rice of paddy and brown rice, and the other end. In a rotary grain sorting device, a brown rice receiving trough is arranged in the rotary sorting tube and extends in the axial direction of the rotary sorting tube. At the end of the process, the rotary sorting cylinder is rotated so that its discharge side is lower than its supply side, so that the M slope can be adjusted.

[Action/effect of the invention]

By arranging the rotary sorting tube so that its inclination can be adjusted by 11 degrees while rotating so that the discharge side is lower than the supply side, the inclination angle of the rotary sorting tube can be adjusted to a gentle angle close to horizontal or horizontal during sorting work. This allows the brown rice sorting ability and sorting accuracy to be maintained at a high level, while the inclination angle of the rotary sorting tube can be increased at the end of sorting work, so that the residue in the rotary sorting tube can be kept high. This means that the fallen rice can be easily discharged in a short period of time.

Therefore, according to the present invention, by adjusting the inclination of the rotary sorting cylinder, it is possible to easily achieve both shortening of the time for discharging the residual rice that has fallen off in the rotary sorting cylinder, and improvement of the brown rice sorting ability and sorting accuracy. Moreover, by configuring the rotary sorting tube so that its inclination can be adjusted so that the discharge side is lower than the supply side, the sorting ability and sorting accuracy of brown rice can be improved depending on the variety and/or moisture content of grains to be handled and the rotary sorting. It has an effect that can be adjusted arbitrarily depending on the amount of rice that has fallen inside the cylinder.

〔Example〕

An embodiment in which the present invention is applied as a brown rice sorting device in a hulling sorting machine will be described below. Fig. 1 shows a side view of the entire hulling sorting machine. A hulling device F having a homper 9 and a culm removal roll 10 and a rotary sorting device C are mounted on the top surface of the box E.

Inside the elongated wind sorting box E, there are a suction dust remover 3, a second conveyor 4, a rice scraping conveyor 5, a brown rice conveyor 6, and a motor M.
A wind sorting section consisting of a brown rice conveyor 6 is provided at one end of the rice conveyor 5, and a rice thrower 7 is provided at one end of the rice conveyor 5.
Brown rice throwers 8 are connected to each other on the other end side, and a belt 13 is transmitted from a pulley 11 fitted to the output shaft of the motor M to a pulley 12 on the culling roll 10, and a belt 13 is transmitted to the other end on the culling roll 10. The belt 18 is configured to be transmitted from a pulley (not shown) to a pulley 14 in the suction dust remover 3 and pulleys 15, 16, and 17 in the various conveyors.

The rotary sorting device C includes a primary rotary sorting wIA and a secondary rotary sorting tube a, which are horizontally arranged in upper and lower stages in a box-shaped case C'. It is an open type, and has a number of recesses 1 large enough to fit brown rice in its inner peripheral surface, and an inner rotating sorting cylinder A;
A is configured such that the side closer to the hulling device F is the discharge side Y, and the side farther from the hulling device F is the supply side X. Also,
Among the inner rotating sorting tubes, the primary rotating sorting tube A is connected to its supply side X.
The lower outer periphery of is placed on a pair of rollers 31 and 31 protruding from the inner surface of the box-shaped case C', while the discharge side Y is fixed to a rotating shaft 19 mounted approximately horizontally on the box-shaped case C'. The secondary rotary sorting tube a is supported by a lower part of its outer periphery on the discharge side Y on a pair of rollers 31 31 protruding from the inner surface of the box-shaped case C', while is supported by being fixed to a rotating shaft 20 mounted substantially horizontally on a box-shaped case C'.

Inside the secondary rotary sorting tube A, an open-top brown rice quantity tmI3 extending in the axial direction of the rotary sorting tube is provided with both ends fixed to the box-shaped case C'. A spiral conveyor 21 formed on the rotating shaft 19 is provided in the gutter B. Further, in the secondary rotary sorting tube a, there is a brown rice receiving trough with an open top surface extending in the axial direction of the rotary sorting tube, and both ends thereof are provided so as to be fixed to the box-shaped case C', Inside this brown rice tray,
A spiral conveyor 22 formed on the rotating shaft 20 is provided. Note that both brown rice receivers FAB and b are provided with rotatable adjustment partition plates 23 and 24, respectively.

A hopper 25 is provided on the outer surface of the supply side X of the box-shaped case C' to supply the scraped rice from the mixed rice thrower 7 into the primary rotating sorting section A. A gutter 26 is provided on the discharge side Y of the primary rotary sorting cylinder A for guiding the rice discharged from the discharge side Y of the primary rotary sorting cylinder A to the hopper 9 of the hulling device F. Also,
The outlet end of the brown rice receiving trough B in the secondary rotary sorting section A communicates with the inside of the supply side X of the secondary rotary sorting tube a via the sudo-27, and furthermore, the outlet end of the brown rice receiving trough B in the secondary rotary sorting tube A communicates with the inside of the supply side X of the secondary rotary sorting tube a, IIJ
The outlet end of the brown rice catcher in the secondary rotary sorting tube a is
The brown rice conveyor 6 via the passage 29 and the chute 30
are connected to each other.

A transmission case 32 is fixed to the lower surface of the supply side X of the box-shaped case C', and both ends of a transmission shaft 33 that passes through the transmission case 32 and is pivotally supported are connected to the wind selection box E.
The box-shaped case C' is configured such that the discharge side Y moves up and down about the transmission shaft 33 by being pivotally supported on the left and right side plates 2, 2 of the box via bearings 34, 35. A mechanism for adjusting the inclination angle of the rotary sorting cylinder is provided between the discharge side Y of the mold case C' and the hopper 9 of the huller 2F, and this adjustment mechanism is constructed as shown in Fig. 4. ing.

That is, a support frame 45 is fixed to the upper surface of the hopper 9 of the hulling device F with bolts 46, and a shaft rod 48 having a slot 47 at one end is attached to the support frame 45 so as to align the axis of the rotary sorting cylinder A, a. A truncated conical stopper pin 49 is fixed to the other end of the shaft rod 48, and the stopper pin 49 is rotated by a spring 50 fitted into the shaft rod 48. The side plate 51 on the discharge side Y of the box-shaped case C' of the rotary sorting device C has a plurality of bottle holes 52 into which the stopper pins 49 fit. ... are bored at appropriate intervals in the vertical direction, and when the stopper pin 49 is fitted into the lowermost bottle hole 52 among the respective bottle holes 52, the inner rotating sorting cylinders A, a become approximately horizontal, and the upper stage When fitted into the bottle hole 52 of the inner rotating sorting cylinder A,
a is configured to be inclined such that its discharge side Y is lower than the supply l1lX.

A pulley 36 fitted to one end of the power transmission shaft 33, which is a pivot point for the rotary sorting device C with respect to the wind sorting box E, has a pulley 36 fitted to one end thereof.
Power is transmitted from a pulley 37 in the brown rice conveyor 6 to a belt 38, and from a transmission shaft 33 in the transmission case 32 to a shaft 41 that projects rearward from a transmission case 32 housing the transmission shaft 33, through a worm gear 40. communicate,
From the pulley 39 fitted on this shaft 41, to the pulley 42 at the end of the rotation shaft 19.20 in the re-rotation sorting tube A, a.
．． 43 and a belt 44, the re-rotating sorting tubes A, a are rotated at an appropriate speed in the direction shown by the arrow (A) in FIG. 3.

Therefore, during the culm removal sorting work, by fitting the stopper pin 49 in the inclination angle adjustment mechanism of the rotating sorting tube into the lowermost pin hole 52, the re-rotating sorting tube A, a
The hopper 9 in the hulling device F is placed in a substantially horizontal state.
When paddy is supplied to the husks, the husked rice that has been dehulled in the husking device F is sorted and removed by the suction wind of the suction dust ejector 3 on the way to the husked rice conveyor 5. Rice thrown from rice conveyor 5 and hopper 25
It is then supplied to the supply side X in the -th rotational speed separate cylinder A.

In this way, the fallen rice supplied into the next rotation speed separate cylinder A is lifted up to the height determined by the rotation of the second rotation sorting cylinder A, and then falls to the bottom repeatedly, forming a fluidized bed. As shown by the arrow (b) in Figure 2, the discharge (, l
['J is sequentially transferred toward Y.

During this fluid transfer, the brown rice that is falling off is lifted up to a relatively high place while being stuck in the recess 1, and then it is lifted up to a relatively high place in the recess 1.
Brown rice mainly enters brown rice receiving channel B by falling from the brown rice receiving channel B.

As mentioned above, after the brown rice is removed in the primary rotation speed separate cylinder A so that it enters the brown rice receiving channel B, the amount of paddy increases as it is transferred to the discharge side Y. From Y, the feeder enters the hopper 9 in the hulling device F through the gutter 26, and the culling operation is performed again. On the other hand, the brown rice that has entered the brown rice receiving trough B at the second rotation speed section A is transferred by the spiral conveyor 21 in the direction shown by the arrow (c) in FIG. It is supplied to the supply side X in the speed separation section a, where it is sorted again.

That is, while the brown rice supplied into the secondary rotary sorting tube a is being transferred toward the discharge side Y as shown by the arrow (E) in FIG. 2 while flowing in the same manner as described above, After being sorted so that only brown rice enters the brown rice receiving trough, the discharge side
The brown rice flows out through the grain chute 28 to the scraped rice conveyor 5 and is sent to the secondary sorting tube A again, repeating the cycle, while the brown rice that has entered the brown rice receiving channel is transferred to the spiral conveyor 22 as shown in Fig. 2. After being sent in the direction shown by the arrow (d), the passage 29
and flows down to the brown rice conveyor 6 via the shoe 1-30,
The brown rice is taken out of the machine by a brown rice thrower 8 connected to the brown rice conveyor 6.

When the hulling and sorting work as described above is completed, it is necessary to discharge the scraped rice remaining at the bottom of the cylinders A and a, which are separated by rotational speed. Refit the stopper pin 49 in the tilt angle adjustment mechanism of the sorting cylinder from the pin hole 52 at the bottom to the pin hole 52 at the upper stage, and rotate the re-rotating sorting cylinder A, a so that its discharge side Y is lower than its supply side X. By continuing to rotate the re-rotating sorting tubes A, a for a while, the re-rotating sorting tubes A, a
The scraped rice remaining in the rotary sorting tube A can be discharged from the discharge side Y by moving toward the lower discharge side Y while flowing with the rotation of the rotating sorting tube A. , the remaining scraped rice discharged from the discharge side of a is
Foreign matter such as bran and dirt attached to the inner surface of the rotary sorting cylinder, etc., together with the remaining ground rice, reach the wind sorting section, where they are removed from the ground rice. .

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view of the hulling and sorting machine, FIG. 2 is a longitudinal sectional front view of the hulling and sorting machine, and FIG.
FIG. 4 is an enlarged sectional view of the inclination angle adjustment mechanism of the sorting cylinder, and FIG. 5 is a sectional view taken along V-V in FIG. 2. A, a...Rotating sorting tube, ■...Recess, X...
・Supply side, Y...Discharge side, B, b...Brown rice receiving trough, D...Inclination angle adjustment mechanism of rotating sorting tube. Figure 5

Claims (1)

[Claims] (1) A rotary sorting tube with a number of concave portions formed on its inner peripheral surface is installed horizontally, one end of the rotary sorting tube is placed on the supply side of the scraped rice between paddy and brown rice, and the other end is placed on the supply side of the paddy and brown rice. While each is configured on the discharge side,
In a rotary grain sorting device comprising a brown rice receiving trough extending in the axial direction of the rotary sorting tube in the rotary sorting tube, the rotary sorting tube is rotated at the end of the operation. A rotary grain sorting device characterized in that the inclination can be adjusted so that the discharge side is lower than the supply side.