JPH04110075A - Foreign matter ejector for stone extractor - Google Patents

Abstract

PURPOSE:To improve the efficiency in separating stone chips and unhulled rice by extending one side end of an ejection hole in its longitudinal direction upward to provide a protrusion, flattening the upper surface, staggeringly arranging the ejection holes and providing a stone chip outlet on one end of a screen and an unhulled rice outlet on the other end. CONSTITUTION:Small stone chips are oscillated and transferred by the protrusion 6 of the screen 3, discharged into a discharge chute 14 from a stone chip outlet 17 at the front end of the screen 3 and transiently stored. A discharge valve 18 closing the outlet 15 of the chute 14 is pushed by an opening and closing roller 22 and opened, and the small chips are discharged to the outside of a frame 1 from the outlet 15 through an outlet cylinder 23. The large chips are supplied on sorting wires 13 from an unhulled rice outlet 8 at the rear end of the screen 3 and discharged to the outside of the frame 1 from the outlet 17. The unhulled rice is transferred to the rear end over the screen 3, supplied on the wires 13 from the outlet 8 at the rear end of the screen 3, dropped from a gap between the wires 13 into an outlet funnel 16 and discharged to the outside of the frame 1. Consequently, the chips are efficiently transferred and separated.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a foreign matter removal device for a stone removal machine.

Conventional technology Conventionally, the brown rice fed onto the sorting net of the oscillating sorting device of a de-stoning machine was ventilated by air from a blower through the perforated holes in the sorting net to float the brown rice on the sorting net. Meanwhile, this unpolished rice and the stone chips mixed in this unpolished rice are oscillatedly sorted by the rocking sorter, and the sorted stone chips are discharged out of the machine from the stone chips outlet at the front end of the sorting net. The sorted brown rice is discharged out of the machine from the brown rice discharge port at the rear end of the sorting net using a foreign matter removal device. The end portion protrudes upward, and this protruding convex portion has a shape that slopes downward to the left and right sides with the central portion of the longitudinal side as the apex, and the perforation hole has the foreign matter removal hole having the sorting net arranged in a staggered manner. It was a device.

Problems to be solved by the invention The brown rice fed onto the sorting net of the oscillating sorting device of the stone removal machine is
The air from the blower passes through the perforated holes in the sorting net, causing the brown rice on the sorting net to float while being shaken to separate the brown rice from stone chips mixed in the brown rice. The sorted stone waste is discharged from the camera body from the stone waste outlet at the front end of the sorting net, and the sorted brown rice is discharged from the camera body from the brown rice outlet at the rear end of the sorting net. be discharged.

During this stone removal work, the convex parts of the perforations are in an inclined state with the central part as the apex, so that the stone chips are not oscillated and transferred to the stone waste outlet, but are formed between the convex parts in a staggered manner. In some cases, stone debris flows down the valley where the brown rice is discharged and is discharged from the brown rice discharge port, but this sorting method separates stone debris from brown rice by preventing this and improving the transport performance of stone debris. This is an attempt to improve performance.

Means for Solving the Problems The present invention provides air from a blower 5 to the perforated holes 4 of the sorting net 3 provided in the oscillating sorting device 2 in the machine body 1 and supplying the air onto the sorting net 3. In a de-stoning machine that floats brown rice and shakes it to sort it into this brown rice and stone chips mixed in this brown rice, one longitudinal edge of the perforation hole 4 is made to protrude upward. A convex portion 6 is provided to form a flat upper surface, and the perforations 4 are arranged in a staggered manner, and one end of the sorting net 3 has a stone waste discharge port 7 for discharging the sorted stone waste, and the other end thereof has a stone waste outlet 7. A foreign matter removal device is provided with a brown rice discharge port 8 for discharging the sorted brown rice.

Function of the Invention The brown rice fed onto the sorting net 3 of the oscillating sorting device 2 of the de-stoning machine is cleaned by air from the blower 5 passing through the perforations 4 of the sorting net 3. The brown rice is floated and sorted by shaking to separate the brown rice and the stone chips mixed in the brown rice, and the sorted stone chips are shaken to the front end by the convex part 6 of the sorting net 3. The stone chips are transferred and discharged from the machine body 1 through the stone waste outlet 7 of the sorting net 3.

The sorted brown rice is oscillatedly transferred over the convex portion 6 of the sorting net 3 to the rear end, and is discharged from the brown rice discharge port 8 of the sorting net 3 to the outside of the machine body 1.

Effects of the Invention According to the present invention, the upper surface of the convex portion 6 of the perforation 4 portion of the sorting net 3 is formed flat, so that the convex portions 6 formed in a staggered manner overlap each other in the oscillating transfer direction. ,
Therefore, the stone chips are not transported downward toward the rear end and are not discharged from the brown rice discharge port 8, and at the same time, the convex portion 6, which has a flat upper surface, ensures that the stone chips are removed from the stones at the front end. By being oscillated and transferred to the waste discharge port 7, the transfer performance of the stone waste is improved, and at the same time, the sorting performance is also improved.

Example Hereinafter, one embodiment of the present invention will be described based on the drawings.

In the zoning system, a ship-shaped swinging sorting device 2 is installed in the upper part of the fuselage l with the front end sloping upward, and a removable blower 5 is installed below the swinging sorting device 2. li5
A stone cutter 1110 provided with a prime mover 9 is shown on the lower side.

The stone removal machine 10 is configured to receive brown rice supplied from a huller (not shown) and separate it into the brown rice and stone chips mixed in the brown rice.

The oscillating sorting device 2 includes a sorting net 3 that oscillates to sort brown rice supplied downstream from the huller and stone chips mixed in this brown rice. It consists of each sorting wire 13 provided at a predetermined gap on the left and right side wall plates 11 and 11 and the sorting wire rod holder 12 below this sorting net 3, and this sorting net 3 has perforations of a predetermined length and width. 4, and a convex portion 6 that projects upward from one longitudinal edge of the eye hole 4. The upper surface of this convex portion is formed flat, and the eye hole 4 is formed in the front-rear direction and left and right directions. They are arranged at predetermined intervals in both directions.

Small stone chips mixed in the supplied brown rice on the sorting net 3 are oscillatedly transferred on the sorting net 3 to the front end and are discharged from the stone debris discharge port 7 to the discharge port 15 of the discharge chute 14. Valve 1
8 is in the open state, it is ejected out of the body 1. Large stones are removed from the brown rice outlet 8 at the rear end of the sorting net 3.
The stone is supplied onto each of the sorting wires 13 from above, swung rearward, and discharged from the stone discharge port 17 of the discharge funnel 16 to the outside of the body 1. The sorted brown rice is supplied from the brown rice discharge port 8 at the rear end of the sorting net 3 onto the sorting wire 13 and leaks between the sorting wires 13 while swinging backward. The brown rice is supplied into a grain raising machine (not shown) through the outlet 19 of the discharge funnel 16.

On the back side of the sorting net 3, the stone waste discharge port 7 is provided with the ""-shaped discharge chute 14, and the discharge chute 14 is provided with the discharge port 15. The discharge valve 18, which opens and closes, is pivotally supported along the swinging direction of the sorting net 3.

A solenoid 20, a rotating arm 21, etc. are provided on the outer surface of the front wall plate of the body 1, and when the solenoid 20 operates, the rotating arm 21 rotates, and the opening/closing roller provided on the rotating arm 21 rotates. The discharge valve 18 is opened by pushing the discharge valve 18 at 22, and when the discharge valve 18 is opened, the stone debris temporarily stored in the discharge chute 14 is removed from the discharge chute 14. It is configured to be discharged from the discharge port 15 to the outside of the body 1 via the discharge pipe 23.

The blower 5 includes a blower case 24 that can be attached to and removed from the swing sorting device 2, a small mouth-shaped wind guide 25 fixed to the blower case 24, and a blower rotatably supported between the left and right wall plates. It is composed of a blade 26 and the sorting net 3
On the lower side, a U-shaped large wind guide 32 is fixed to the small wind guide 25 in an overlapping state at its rear end on the lower side of the small wind guide 25.

The blower case 24 is supported in a suspended state by respective support fittings 27, and an eccentric cam 2 is provided between the left and right wall plates.
The eccentric cam 28 and the blower case 24 are connected to each other, and the swinging sorting device 2 is driven to swing and rotate by the rotation of the eccentric cam 28. .

The air generated by the air blower blades 26 of the air blower Wa, 5 is guided by the air blower case 24, passes through the perforations 4 of the sorting net 3 of the oscillating sorting device 2, and is removed from the air blower case 24. The small wind guide 25 and the large wind guide 3
2 and pass through the perforated holes 4 simultaneously.While the brown rice supplied onto the sorting net 3 is floated, the brown rice and stone chips mixed in the brown rice are removed by the oscillating sorting process. The structure is such that it performs oscillating sorting.

The prime mover 9 is located below the blower 5 in the lower part of the fuselage 1.
A belt 31 was passed between the pulley 29 attached to the shaft end of the drive IiQ and the pulley 30 fixed to the shaft end of the stone removal machine 10 protruding outward from the left wall plate. The structure is such that each part of the stone removing machine 10 is rotationally driven by the rotation of the prime mover 9.

Hereinafter, the operation of the above embodiment will be explained.

The brown rice is fed onto the sorting net 3 of the oscillating sorting device 2 of the one-stone remover 10, and the air from the blower 5 passes through the four perforations of the sorting net 3, causing the brown rice to float while being sorted. The rice is shaken and transferred over the net 3, and is shaken and sorted into brown rice and stone chips mixed in the brown rice.

Small stone debris is oscillatedly transferred to the front end by the convex portion 6 of the sorting net 3, discharged from the stone debris outlet 17 at the front end of the sorting net 3 into the discharge chute 14, and temporarily stored. 20, the opening/closing roller 2 is opened via the rotating arm 21 etc.
2 rotates, and the discharge valve 18, which closes the discharge port 15 of the discharge seat 14, is pushed by the opening/closing roller 22, and the discharge valve 8 is controlled to be in the open position. Ejection shoe 1
-14 is discharged to the outside of the fuselage 1 through the discharge port 15 which is in the open state via the discharge tube 23.

The large stones are supplied onto the sorting wire 13 from the brown rice discharge port 8 at the rear end of the sorting net 3, are oscillated and transferred to the rear end, are supplied into the discharge funnel 16, and are then fed from the filter discharge port 17. It is discharged to the outside of the aircraft 1.

Further, the brown rice is transferred to the rear end on the sorting net 3, and is passed through the brown rice discharge port 8 at the rear end of the sorting net 3 to the sorting wire rod 13.
While being fed upward and being oscillatedly transferred to the rear part, this sorted wire 1
3 and is supplied into the discharge funnel 16, and flows through the discharge funnel 16 to the brown rice flow tank 19 to the machine 1.
Expelled outside.

In addition, FIG. 6 (a), (b), and (c) show that the foreign matter (i) screening test was carried out using the screening net according to the present invention (a), as well as the screening net with arcuate protrusions (b) and triangular protrusions. (c) shows the results obtained by forming each screening net with a thickness (t) of 0 in the figure.
．． 6m, hole island size (a) 1.0m.

The protrusion width (b) is set to 10 cm. Foreign matter (I1)
) was divided into categories a - d as shown in the table, and a total of 51 pieces of brown rice were tested at 250 cm/hour, 350 kg/hour, 4
A method of checking the sorting and removal results by mixing 50 pieces per hour was adopted, and the removal rate of each of these foreign substances (stones) in categories a to d ((number of foreign substances removed (1)/total foreign substances (stones)) was calculated. )X10
0) (%) is calculated and accumulated.

In addition, as shown in Figure 1, the sorting net inclination angle α is the angle formed between the horizontal line and the sorting net direction, and in a steady flow state where a predetermined efficiency can be obtained, the inclination angle α is around 15°. It is.

As is clear from the experimental results, the screening net (a) according to the present invention is advantageous because it has the highest removal rate in the steady state of use with an inclination angle α=15°.

[Brief explanation of drawings]

The figure shows one embodiment of the present invention.
A-A sectional view in the figure, Figure 2 is the overall rear view of the stone removal machine, Figure 3
The figure is an enlarged plan view of a part of the rocking sorting device of the stone removal machine, Figure 4 is an enlarged sectional view taken along line H-B in Figure 3, and Figure 5 is C-c in Figure 3.
The enlarged sectional views and FIGS. 6(a), 6(b), and 6(c) are graphs showing the experimental results. Explanation of symbols 1 Machine body 3 Sorting net 5 Blower 7 Stone waste outlet 2 Shaking oyster sorter; ζ 4 Perforation 6 Convex part 8 Brown rice outlet

Claims (1)

[Claims] Inside the machine body 1, air from a blower 5 is passed through the perforations of the sorting net 3 provided in the oscillating sorting device 2, and the brown rice fed onto the sorting net 3 is floated while being subjected to oscillating sorting. In a stone removal machine that oscillates and separates this brown rice from stone chips mixed in this brown rice, a convex portion 6 is provided on one longitudinal side edge of the perforation hole 4 to make the upper surface flat. The perforations 4 are arranged in a staggered manner, and one end of the sorting net 3 has a stone waste outlet 7 for discharging the sorted stone waste, and the other end has a brown rice outlet 7 for discharging the sorted brown rice. Foreign matter removal device equipped with 8.