JPH07308638A - Screening stabilizing apparatus of pot-hole type screening huller - Google Patents

Abstract

PURPOSE:To prevent the deterioration of screening accuracy by the mixture of unhulled rice into unpolished rice caused by the activation of lifting action of a pot hole by the increase in the rotational speed of a screening cylinder due to the reduction in the load of a motor and to keep the screening accuracy good by closing a shatter to a hulling roll during or after hulling work. CONSTITUTION:In a pot-hole type screening huller composed of a hulling part A, a pneumatic screening part B for screening dropped matters, and a rotary screening part C for screening mixed rice after pneumatic screening by a pot- hole type screening cylinder 1, the rotational speed of the screening cylinder 1 is shifted to a low speed side through a rotational speed shifting mechanism S by closing a shutter 4 for opening/closing a unhulled rice supply passage 3 to a hulling roll 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating section for selecting a depulling section, a wind-selecting section for wind-selecting sludge from the removing section, and selecting mixed rice after wind-selection with a jar-type selection cylinder. The present invention relates to a sorting stabilizing device in a pothole type sorting huller including a sorting unit.

[0002]

2. Description of the Related Art Conventionally, in such a pothole type screening huller, when the shutter for the removing roll is closed during the hulling work or at the end of the work, the prime mover is operated. The load is reduced, the rotation speed of the sorting cylinder is also increased, and the lifting effect by the pot hole is enhanced, and the paddy is mixed into the brown rice and the sorting accuracy deteriorates.

[0003]

DISCLOSURE OF THE INVENTION The present invention is directed to, in a pothole type sorting huller, a sorting and stabilizing device which eliminates the phenomenon of poor sorting accuracy in the above cases and always keeps good sorting accuracy. It was created for the purpose of providing.

[0004]

SUMMARY OF THE INVENTION In order to achieve the object described in the preceding paragraph, the present invention provides a stripping section, a wind selecting section for wind selecting sludge from the removing section, and mixing after wind selecting. In a pot-hole type sorting huller consisting of a rotary sorting unit that sorts rice by a pot-hole type sorting cylinder, a rotary transmission mechanism is operated by closing a shutter that opens and closes a paddy supply path to a derolling roll. It is characterized in that the rotation speed of the sorting cylinder is changed to a low speed.

[0005]

[Function] As a result, the mixed rice of brown rice and paddy after the removal of the wind is supplied into the sorting cylinder of the rotary sorting section, and the upward rotation of the sorting cylinder is displaced by the rotation of the sorting cylinder to the fluidized bed. Flying in the form of a parabola while forming a pot, it is selected by the difference in flight distance between brown rice and paddy.

When the shudder is closed during the hulling work or at the end of the work, the hull supply to the removing roll is interrupted, the load on the prime mover is reduced, and the rotation speed of the sorting cylinder is increased. The flying distance between the unpolished rice and the paddy becomes longer, and the unblended rice becomes mixed in the unpolished rice.At this time, the rotation speed of the sorting cylinder is changed to a low speed through the rotary speed change mechanism by closing the shutter. Since the rotation speed does not increase with the decrease of the load on the prime mover, the flying distance between brown rice and paddy does not change, and the paddy is prevented from being mixed into the brown rice to maintain good sorting accuracy.

[0007]

The present invention will be described below with reference to the drawings. This pothole type sorting huller is provided with a wind selecting section (B) on a machine base (5), and a removing section (A) is rotated to the rear side on the front side on the wind selecting section (B). The sorting unit (C) is provided, and the grain elevator (D) is erected upright over the sides of the wind sorting unit (B) and the rotary sorting unit (C) to remove the dewetting unit (A) and the wind sorting unit ( B)
The rotary sorting section (C) and the grain elevator (D) are integrally configured.

The depulping section (A) is composed of a paddy tank (6), a pair of depulling rolls (2), etc., to dehull the paddy, and a wind sorting section (B)
Is equipped with a suction dust removal fan (7) and a compressed air fan (8), and is provided with a slidable matter sorting air passage (9) and a brown rice sorting wind between the compressed air fan (8) and the suction dust discharging fan (7). The path (10) is formed to wind-select the sludge from the removing unit (A) and finish-wind the brown rice selected by the rotation selection unit (C).

The grain elevator (D) lifts the mixed rice of brown rice and paddy after wind selection to the rotary sorting section (C) in the sludge sludge sorting air passage (9), and at the same time in the brown rice sorting air passage (10). The finish-selected brown rice is lifted and taken out.

The rotary sorting section (C) rotatably lays a sorting cylinder (1) having an innumerable vase hole (11) formed on its inner peripheral surface,
A brown rice gutter (12) is placed in the selection barrel (1), and a mixed rice transfer gutter (13) is installed side by side in the grain receiving gutter of the gutter (12), and a grain lifting machine ( The mixed rice to be lifted up by D) is supplied into the sorting cylinder (1), and the lifting of the pot (11) by the rotation of the sorting cylinder (1) raises the parabola to cause the mixed rice to flow. It is sorted into brown rice and paddy.

That is, the paddy put into the paddy tank (6) falls through the paddy supply path (3) and is slid off by the removing roll (2). ), The dust such as rice husks is discharged from the suction dust removal fan (7) to the outside of the machine, and the light porridge is taken out from the porridge (14), and the mixture of brown rice and paddy after this taking out The mixed grain gutter (15) causes the grain elevator (D) to laterally feed the rice to be fried.

The mixed rice to be lifted is sent from the supply gutter (16) to the rear side in the selection cylinder (1) by the mixed rice transfer gutter (13) and is sent from the drop opening (17) to the selection cylinder (1). While forming a fluidized bed (P) whose upper rotation is deviated by the sorting cylinder (1) which drops on the inner peripheral surface and rotates in the direction of arrow (a), the jar hole (11) ), The brown rice falls into the brown rice receiving gutter (12), passes through the brown rice removing gutter (18), is led to the rear side of the wind selecting part (B), and is finished wind-selected by the brown rice selecting air passage (10). The good brown rice is taken out through the brown rice gutter (19) to the designated place by the grain elevator (D), and the unprepared rice is discharged by the scrap rice taking gutter (20).
Brown rice and some paddy that do not fall into the brown rice receiving trough (12) fall into the mixed rice transfer trough (13) and are re-sorted by the jar hole (11), and then inside the sorting barrel (1). Leftover paddy is scooped up by the front bucket (21) and the return gutter (2
It is returned from 2) to the paddy tank (6) and removed again.

The outer peripheral surfaces of the front and rear ends of the sorting cylinder (1) are supported by driving wheels (25) ... , The rotary shaft (23) on one side inputs the rotary power taken out from the take-off section (A) through the rotary speed change mechanism (S), and this input can be applied to one belt (26). By rotating the other rotating shaft (24), each screw conveyor shaft installed in the mixed rice transfer gutter (13) and the brown rice receiving gutter (12), the sorting cylinder (1) is moved in the (a) direction. The mixed rice in the mixed rice transfer trough (13) is transferred to the rear side and dropped from the drop opening (17), and the brown rice in the brown rice receiving trough (12) is conveyed to the front side to remove the brown rice. It is derived from (18).

The rotary transmission mechanism (S) is provided with a take-off section (A).
Fixed pulley (28a) pivotally attached to the take-out shaft (27)
And a belt (30) on a variable-diameter pulley (28) composed of a movable pulley (28b) opposite to this and an input pulley (29) pivotally attached to the shaft end of the rotary shaft (23). And the movable pulley (28b) is slid in the axial direction by the operation of the cam (31) to change the effective transmission diameter of the variable diameter pulley (28) to rotate the input pulley (29). I try to change the speed. In addition, (32) is an automatic tension pull.

The paddy tank (6) of the removing section (A)
A shutter (4) for opening and closing the paddy supply path (3) to the removing roll (2) is provided at the bottom of the shutter.
(4) is opened and closed by engaging the upper end of the operating rod (34) coaxially attached to the operating lever (33) with the shutter (4) and rotating the operating lever (33). (34).

The operation lever (33) is a cam lever (31a) integral with the cam (31), and an actuating arm (31) rotatably fitted around the base of the cam lever (31a). 35) and the outer lever by operating the operating lever (33).
The cam lever (31a) is actuated by the wire (36a) and the interval between the movable pulley (28b) and the fixed pulley (28a) is changed by the cam (31) to change the variable diameter pulley (28).
Is adjusted so that the rotation speed of the input pulley (29) is changed to change the rotation speed of the sorting cylinder (1).

When the rotation adjusting rod (37) is pushed, the actuating arm (35) is moved to the inner wire.
The cam lever (31a) is operated via (36b) to adjust the effective transmission diameter of the variable diameter pulley (28).

Therefore, when the operating lever (33) is operated as indicated by the arrow (b) and the shutter (4) is pushed in and closed, the outer lever (36a) causes the cam lever (31a) to move to (c). Rotating in the direction, the variable diameter pulley (2
8) The effective transmission diameter of 8) is reduced to change the rotation speed of the sorting cylinder (1) to a low speed, and the sorting cylinder (1 ) Is prevented from increasing the rotation speed so that paddy will not be mixed in the brown rice gutter (12). When the operation lever (33) is operated in the reverse direction to open the shutter (4) when the work is restarted, the paddy is supplied to the removing roll (2), and the rotation speed of the sorting cylinder (1) is the same. It returns to the state of and selects.

Further, a sensing valve (38) for detecting the flow rate of the mixed rice is provided in the sorting cylinder (1) of the rotary sorting section (C),
The sensing valve (38) swings following the change in the shape of the fluidized bed (P) about the shaft (39) at the upper end as a fulcrum, and the swinging is an arm (40) upward from the shaft (39). And rod (41)
The partition plate (42) standing from the boundary between the mixed rice transfer gutter (13) and the brown rice receiving gutter (12) is tilted via the above, etc., and the downward arm ( 43)
With the shaft (45) as a fulcrum through the rod and the rod (44)
The rod (4) for integrally rotating the arm plate (46) and another arm plate (47) and connecting the arm plate (47) to the tip of the arm plate (47).
8) is connected to the removal rod (A) to the rod (49), and the paddy supply amount control valve (50) provided in the paddy supply path (3) is interlocked to mix the rice in the selection drum (1). Sensing valve for detecting flow rate (3
The paddy supply amount control valve (50) is operated by the swing of (8) to stabilize the flow rate of the mixed rice in the sorting cylinder (1).

In that case, the swing range (α) at which the swing of the sensing valve (38) is appropriate (the hatched portion in FIG. 4).
If it is, the movement of the paddy supply amount control valve (50) is also in the normal operating range (β) (range shown in FIG. 5), and the sorting cylinder (1)
When the flow rate of mixed rice in the plant becomes too large or too small and deviates from the appropriate swing range (α), the paddy supply amount control valve (50)
The operation amount is increased so that the mixing flow rate in the selection cylinder (1) is promptly corrected and returned to within the swing range (α).

That is, as shown in "FIG. 8", the fluctuation of the flow rate of the mixed rice in the sorting cylinder (1) does not fluctuate and the sensing valve (3
When 8) swings within the proper swing range (α),
The tip portion of the rod (44) moves between (d) and (e), and the arm plate (46) and the arm plate (47) move to the shaft (4).
5) as a fulcrum and swings within the range shown by the dotted line, and the tip of the arm plate (47) moves between (f) and (g) and is removed by the rod (48) (A). Gawa Rod (49)
The amount of movement is (a), and the movement of the paddy supply amount control valve (50) is also within the normal operating range (β).

When the mixed rice flow rate in the sorting cylinder (1) fluctuates excessively or excessively and deviates from the proper swing range (α) of the sensing valve (38), the tip of the rod (44). The part moves to (H) or (R) and the arm plate (46)
And the arm plate (47) swings as shown by the phantom line to form an arm.
The tip of the plate (47) moves to (nu) or (ru), and the rod (48) moves the rod (49) of the removing section (A) by the amount (b). > (A),
Therefore, the paddy supply amount control valve (50) operates upward or downward from the normal operating range (β) shown in FIG. 5, and the operating amounts (M) and (N) become large, so that the sorting cylinder is increased. The mixing flow rate in (1) is promptly corrected within the appropriate swing range (α).

[0023]

As described above, according to the present invention, the removing section (A), the wind selecting section (B) for selecting the sludge from the removing section (A), and the wind selecting section In a pot-hole type sorting and hulling machine comprising a rotary sorting section (C) for sorting mixed rice by a pot-hole type sorting cylinder (1), a paddy supply path (3) to a derolling roll (2) is provided. It is characterized in that the closing speed of the shutter (4) for opening and closing causes the rotation speed of the sorting cylinder (1) to be changed to a low speed through the rotation speed change mechanism (S). Shader during or after finishing work
When (4) is closed, the paddy supply to the removal roll (2) is interrupted, the load on the prime mover is reduced, the rotation speed of the sorting cylinder (1) is increased, and the flight distance between the brown rice and the paddy is increased. It becomes a long process and the paddy becomes mixed with brown rice.
By the closing operation of (4), the rotation speed of the sorting cylinder (1) is changed to a low speed through the rotation speed changing mechanism (S), and the rotation speed does not increase with the decrease in load of the prime mover. It is possible to prevent the paddy rice from being mixed into the brown rice without changing the flying distance and to improve the sorting accuracy.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view of a pothole type sorting and hulling machine.

FIG. 2 is a side view showing a rotary transmission mechanism.

FIG. 3 is a rear view of the mechanical portion.

FIG. 4 is a front view of a rotation selection unit.

FIG. 5 is a side view for explaining a removing unit.

FIG. 6 is a front view showing an interlocking portion of a sensing valve and a paddy supply amount control valve.

FIG. 7 is a plan view of the interlocking portion.

FIG. 8 is an explanatory diagram of the same operation.

[Explanation of symbols]

 A removing unit B wind selecting unit C rotating sorting unit 1 sorting cylinder 2 removing roll 3 paddy supply path 4 shutter-S rotational transmission mechanism

Claims (1)

[Claims] 1. A removing section (A), a wind selecting section (B) for selecting the sludge from the removing section (A) by wind, and a mixed-hole rice after the wind selection in a pot-hole type selection cylinder ( In the pothole type sorting huller consisting of the rotary sorting section (C) for sorting by 1), the removing roll (2)
The selection cylinder (1) is rotated through the rotary speed change mechanism (S) by closing the shutter (4) for opening and closing the paddy supply path (3).
A stabilizing device for a pot-hole type sorting and hulling machine, characterized in that the rotation speed of the machine is changed to a low speed.