JPH04358577A - Removing equipment for chip of stone in grain - Google Patents

Abstract

PURPOSE:To obtain an equipment for smoothly removing chips of stone from grain. CONSTITUTION:A removing equipment for chips of stone from grain is equipped with a sorting frame 10 which has numberless air injected holes 16 and projections 17, a takeout port 37 of grain and a connection port 48, a blowing device 8 and a storage chamber 49 of chips of stone connected to the connection port 48. The base of this storage chamber is formed of a controlling base face 20 having many air injecting ports 45. A falling port 24 of chips of stone is formed to the tip of the controlling base face. An auxiliary windmill 29 different from the blowing device 8 is provided to the lower part of the controlling base face 20. A changeover valve 31 is provided to a blowout port 34. While grain is supplied and operation of removing chips of stone is performed, the changeover valve supplys all parts of wind sent from the auxiliary windmill toward the air injecting ports 45 of the controlling base face 20. When the supplied grain is absent, one part of wind sent from the auxiliary windmill is blown to both the falling port 24 of chips of stone and the opening part side of the front end of a return pipe 36. Furthermore after a specified time lapses, all parts of wind sent from the auxiliary windmill are blown to both this falling port and this opening part side of the front end of the return pipe. Thereby the change-over valve is freely changed over so that the residual grain falling from the falling port of chips of stone is returned to the takeout port of grain by the return pipe.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for removing stone debris from grain.

0002

[Prior Art] Conventionally, a sorting frame has a bottom surface in which numerous blowholes and protrusions are formed, a grain outlet at the rear end, and a communication port at the front end, and the grains supplied to the upper surface of the bottom are kept constant. In the device for removing stone debris from grains, which is comprised of a blower installed at the bottom of the sorting frame that floats to a high height, the bottom surface has a V-shaped structure that narrows from the center to the front end when viewed from above. A small communication port is formed at the front end, a stone waste storage chamber is connected to the communication port, the bottom of the stone waste storage chamber is an adjustment bottom surface having a large number of blowholes, and a stone waste storage chamber is formed at the tip of the adjustment bottom surface. Those in which a drop opening is formed are known.

0003

[Problems to be Solved by the Invention] The above-mentioned known stone waste removal device has almost no problems during operation, but when the work is finished, the grains remaining on the bottom are discharged from the connection port at the front end and are stored in the stone waste box. There is a problem of contamination. During the stone waste removal process, the grains fed onto the bottom of the sorting frame are automatically taken out from the grain outlet at the rear end, but the last grain is removed by blowing air from the bottom of the adjustment frame to remove the remaining stone waste. If it is weakened, it will move upward along with the stone debris.

0004

[Means for Solving the Problems] Therefore, the present invention provides numerous blowholes 16 and protrusions 17 and a grain outlet 37 at the rear end.
and a sorting frame 10 having a bottom surface 15 formed with a communication port 48 at the front end thereof, and the sorting frame 10 which levitates the grains b supplied to the upper surface side of the bottom surface 15 to a constant height 19.
In the device for removing stone debris from grains, the bottom surface 15 has a V-shaped structure that narrows from the center to the front end when viewed from above, and has a small width at the front end. A communication port 48 is formed, and a stone waste storage chamber 49 is connected to the communication port 48. The bottom of the stone waste storage chamber 49 is an adjustment bottom surface 20 having a large number of blowholes 45.
A return pipe 36 is provided with a stone waste fall port 24 at the tip of the sorting frame 10, and has a front end opened in the stone waste fall port 24 at an upper position of the sorting frame 10, and a rear end opened in the vicinity of the grain removal port 37. An auxiliary windmill 29 separate from the blower 8 is provided at a lower position of the adjustment bottom surface 20, and a switching valve 31 is provided at the outlet 34 of the auxiliary windmill 29. During the stone debris removal work when grains b are being supplied, all of the wind from the auxiliary windmill 29 is supplied toward the blowhole 45 on the adjustment bottom surface 20; The air volume of the auxiliary windmill 29 is reduced to discharge the stone debris a on the adjustment bottom surface 20, and after a certain period of time, the wind supply to the blowhole 45 is stopped and the remaining grains b on the sorting frame 10 are removed from the adjustment bottom surface 20. This is a device for removing stone debris from grains which can be freely switched so that the remaining grains b are passed through and dropped from the stone debris drop port 24 and the fallen residual grains b are returned to the grain outlet 37 via a return pipe 36.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described. Reference numeral 1 denotes the entire case, which is formed in a substantially sealed state. The shape of the case 1 is such that the longitudinal section is a long rectangle long in the front and back sides, and the cross section is also a long rectangle long in the front and back sides. The case 1 is divided into two parts, a lower case 2 and an upper case 3. A trash can 4 for storing rice bran, etc. is detachably attached to the lower front side of the lower case 2. The top surface of the trash can 4 is open, and during stone removal work, blown-in dust such as bran powder is guided by a guide plate 5 and flows into the trash can 4.

[0006] A motor 6 is installed behind the trash can 4 . A wind turbine case 7 is provided behind the motor 6,
A blower device 8 consisting of an axial flow type turbo fan is installed inside the wind turbine case 7 . The wind turbine case 7 is surrounded on the periphery parallel to the axis, and has a suction port 47 opened only on one side of the side (FIG. 1). In the embodiment, since a small axial flow type turbo fan with a diameter of about 10 cm is assumed, two turbo fans are installed.

[0007] The wind turbine case 7 expands in the front and back direction as it reaches the top, but the opening 9 on the top surface of the wind turbine case 7 is
The width is tapered from the center to the front end. The opening 9 is horizontal in the left-right direction, but has a slope that is low on the rear side and high on the front side in the front-back direction.

A sorting frame 10 is provided on the upper surface of the opening 9 and vibrates violently in front and rear diagonal directions. The sorting frame 10 is
A rod 13 of an eccentric cam 12 whose lower end is pivoted to the upper end of the inclined support rods 11, 11 which are pivoted to the upper side of the windmill case 7, and which is attached to the windmill case 7 side.
The upper end of is attached. The eccentric cam 12 is rotated by the rotation of the motor 6 and vibrates the sorting frame 10 via the rod 13, but the vibration of the sorting frame 10 in the embodiment of the present invention is a small vibration of about 2 mm or 3 mm. is assumed. The conventional one is 10mm as shown in Figure 8.
Because of the large oscillation of 15mm, during the stone removal work, the stone chips A were thrown too strongly as shown by the arrow (A), colliding with the lower surface E of the floating grain layer and being reflected diffusely, reducing the flight distance. In fact, the time required for the stone chips to reach the outlet was delayed, resulting in inefficiency. In the embodiment of the present invention, regarding the amplitude,
Since the vibration is small, such as 2 mm or 3 mm, the stone chips a do not collide with the lower surface E of the floating grain layer, so that the flying distance increases as shown by the arrow (b). In addition, Figure 8
, A is a blowhole, B is a protrusion, C is a bottom surface, D is a constant flying height, and F is a space.

As shown in FIG. 3, the sorting frame 10 has side walls 14 narrowing in a C-shape at the front on both left and right sides, and numerous blowholes 16.
All the blowholes 16 are shaped like a bottom surface 15 having a
The front side is turned up to form a high protrusion 17 on the front side.

The two blowers 8 rotate at high speed so that the wind blows up from the blowholes 16.
When the grains b are dropped from the supply hopper 18 above, the grains are lifted by the wind blowing up the blowhole 16 and float to the surface at a constant height 19 as shown in FIG.
The lower surface 46 of the floating grain does not contact the projections 17. The front and rear inclination angles of the bottom surface 15 are the same as those of the opening 9, and the inclination angles are not adjustable.

As mentioned above, the bottom surface 15 is tapered into a V-shape as it approaches the front side, and there is a small communication hole 4 at the front end.
8 is formed to connect a stone debris storage chamber 49 to the front side of the communication port 48. The stone debris storage chamber 49 includes an adjustment bottom surface 20 having a large number of blowholes 45 connected to the front end of the bottom surface 15 via a shaft attachment part 25, left and right side walls 21, 21 of the adjustment bottom surface 20, and A cover 22 provided on the upper part of the bottom surface 20, a curved wall 23 provided integrally on the front side of the cover 22, and the curved wall 2.
3 and the tip of the adjustment bottom surface 20 is formed with a stone debris drop opening 24. The stone debris falling port 24 communicates with a stone falling part 35. 36 is a return pipe disposed above the sorting frame 10, one end opening of which faces the front position of the drop port 24, and the other end opening facing the grain outlet 3 of the sorting frame 10.
7.

A screw tube 26 is provided on the upper surface of the cover 22, and the tip of an adjustment screw 27 provided on the sorting frame 10 side is screwed into the screw tube 26. Reference numeral 28 denotes a sub-wind turbine case provided below the adjustment bottom surface 20. Inside the sub-wind turbine case 28, a sub-wind turbine 29 for the adjustment bottom surface 20 is provided. 30 is the secondary wind turbine case 2
8, and opens at the lower surface of the adjustment bottom surface 20.

Reference numeral 31 denotes a switching valve which is configured to be rotatable as a part of the outer wall of the air passage of the auxiliary wind turbine 29, and the upper end of the switching valve 31 is pivotally supported by a shaft 32. An arm 33 is fixed to the shaft 32, and when the arm 33 is moved up and down, the direction of the wind from the auxiliary wind turbine 29 is changed.

That is, the pinion 42 fixed to the motor 41
When the rack 43 is moved upward to the maximum by rotating the arm 33, the arm 33 loosely connected to the rack 43 rotates upward around the shaft 32, and the switching valve 31 rotates to the left around the shaft 32. ,
As shown in FIG. 4, all of the wind from the auxiliary windmill 29 is blown toward the upper opening 30 and onto the adjustment bottom surface 20. Then, sorting frame 1
Of the grains b and stone chips a that have moved from the bottom surface 15 of the 0 to the adjustment bottom surface 20, the stone chips a remain, and the grains b are moved to the bottom surface 15 of the sorting frame 10 as shown by the arrow (c) due to the wind blowing up from the blowhole 45. It is returned to the top (see Figure 7). 38 is an upper switch, and when the arm 33 moves upward, it hits the upper switch 38 and stops the motor 41.

When the arm 33 is in a horizontal position halfway between the upper and lower sides, the lower end of the switching valve 31 is located at the center of the outlet 34 of the auxiliary wind turbine case 28, and half of the air from the auxiliary wind turbine 29 is directed to the upper opening 3.
0 to the adjustment bottom surface 20, and the remainder blows up the front side of the switching valve 31. Since the front side of the switching valve 31 is the stone falling part 35 that is connected to the stone waste falling port 24 side, in this state, the grains b on the regulating bottom surface 20 are blown back to the bottom surface 15 and are falling on the regulating bottom surface 20. Since the wind blowing up through the blowhole 45 becomes weaker, the stone chips a move toward the stone chip drop port 24 and are automatically discharged from the stone chip drop port 24. Further, if there are grains that are about to fall from the stone falling part 35, they are returned. 39 is a central switch, and when the arm 33 becomes horizontal, it hits the central switch 39 and stops the motor 41.

When the arm 33 moves downward, the switching valve 31 fully opens the air outlet 34 in the direction of the stone falling section 35. Then, the air does not blow up towards the upper opening 30, but only towards the stone falling area 35. If the wind does not blow up from the upper opening 30, the grains b on the adjustment bottom surface 20 will not be blown back, so they will advance to the stone waste outlet 24 and fall into the stone falling part 35. This grain b is blown up by the stone falling part 35, enters the return pipe 36, and is returned to the grain outlet 37.

41 is a motor, 42 is a pinion, and 43 is a rack, and the rack 43 and the arm 33 are engaged with each other. A sensor 51 is provided in the supply hopper 18 and is connected to the motor 41. 44 is a stone waste storage box.

[0018]

[Effect] Next, the effect will be described. Rotate the adjustment screw 27 to adjust the stone debris storage chamber 49 to an approximately appropriate angle (determined by feel at first). When the arm 33 is in the non-supply state, it moves upward as shown in FIG. 4, and the arm 33 presses the upper switch 38 to turn it on. Since the center switch 39 and the lower switch 40 are not pressed by the arm 33, they are off.

When the supply hopper 18 is filled with grain b containing stone chips a while the upper switch 38 is on, the sensor 51 senses this and energizes the motor 6 to turn on the blower 8.
Then, the eccentric cam 12 and the auxiliary windmill 29 are rotated. Therefore, the blower device 8 blows the air sucked in from the side suction port 47 through the opening 9 from the blowhole 16 on the bottom surface 15 of the sorting frame 10, and the entire amount of air from the subwindmill 29 is sent from the blowout port 34 through the top opening. The air is blown up from the blower port 45 of the adjustment bottom surface 20 via the portion 30 .

In this state, the grains b falling from the supply hopper 18 are placed on the bottom surface 15 through each blowhole 16, as shown in FIG.
Under the influence of the stronger wind, it floats to a certain height 19 and is balanced, and in this state, the leading grain b remains balanced and does not move either to the front or to the rear.

Subsequently, when the succeeding grain b is supplied from the supply hopper 18, the succeeding grain b pushes the preceding grain b to the front and rear sides, and the leading grain b pushed to the rear side passes through the grain outlet 37.
The preceding grain b, which is discharged from the
8, it moves onto the adjustment bottom surface 20, but at the adjustment bottom surface 20, the wind from the auxiliary windmill 29 that is stronger than the wind from the blower 8 is blowing up, and because there is a cover 22 and a curved wall 23, the preceding grain b is It is blown back like an arrow.

Since the stone chips a contained in the grains b have a heavy specific gravity, after falling from the supply hopper 18, they are raised to a certain height 19.
It passes through the grain layer in the position, falls directly onto the bottom surface 15, contacts the protrusion 17, and hits the protrusion 17, which is vibrating violently with a width of 2 to 3 mm due to the eccentric cam 12 and rod 13 on the bottom surface 15. It penetrates the space 50 in the lower surface 46 of the floating grain and reaches above the adjustment bottom surface 20. This stone debris a is also subjected to the force of the strong wind blowing up the blowhole 45, but because of its heavy specific gravity, it does not float up and remains there. The accumulated leading stone debris a gradually moves forward as it is pushed by the trailing stone debris a, and finally reaches the stone debris falling port 2.
It is extracted from 4.

When the grain in the supply hopper 18 runs out, the state shown in FIG. 5 occurs. Then, the sensor 51 detects this, and the motor 41 is energized via the upper switch 38, which is turned on by being pressed by the arm 33, and the pinion 42 is turned on.
The rack 43 is moved down through the lever, the arm 33 is made horizontal, and the central switch 39 is pressed to turn it on. When the central switch 39 is turned on, the motor 41 temporarily stops. When the motor 41 stops, the switching valve 31 half closes the air outlet 34, so the force of the wind blowing up the air outlet 45 is weak, and the last stone debris a that has reached the top of the adjustment bottom surface 20 does not float much, so it continues to move forward. , taken out from the drop port 24.

When the central switch 39 is turned on, the motor 41 is reenergized via the timer, and as shown in FIG. turn on. When the lower switch 40 is turned on, the motor 41 is stopped again. In this state, the air does not blow up toward the upper opening 30, but only toward the stone falling portion 35. If the wind does not blow up from the upper opening 30, the grains b on the adjustment bottom surface 20 will not be blown back, so they will move forward to the stone debris drop opening 24 and fall. This grain b receives the wind blowing up from the blower outlet 34, enters the return pipe 36, and is returned to the grain outlet 37.

When the lower switch 40 is turned on, the motor 41 is similarly energized again after a certain period of time via the timer.
Return the arm 33 to the state shown in FIG.

[0026]

[Effect] The known stone debris removal device is capable of
There was a problem in that the grains remaining on the bottom surface were discharged from the communication port at the front end and mixed into the stone waste box. However,
The present invention provides a sorting frame 10 having a bottom surface 15 in which numerous blowholes 16 and protrusions 17, a grain outlet 37 at the rear end, and a communication port 48 at the front end are formed, and the bottom surface 15
In a device for removing stone debris from grains, which comprises a blower device 8 installed at a lower position of the sorting frame 10 to levitate the grain b fed to the upper surface side to a certain height 19, the bottom surface 15 has a structure seen from above. A small communication port 48 is formed at the front end, and a stone waste storage chamber 49 is connected to the communication port 48. The bottom is an adjustment bottom surface 20 having a large number of blowholes 45, and a stone debris fall port 24 is formed at the tip of the adjustment bottom surface 20, and the front end is opened to the stone waste fall port 24 at the upper position of the sorting frame 10. A return pipe 36 whose end is open near the grain outlet 37 is provided, and an auxiliary windmill 29 separate from the blower 8 is provided at a lower position of the adjustment bottom surface 20.
A switching valve 31 is provided at the outlet 34 of the
During the stone debris removal work when grain b is being supplied, all of the wind from the auxiliary windmill 29 is supplied toward the blowhole 45 on the adjustment bottom surface 20;
By reducing the air volume of the subwind turbine 29 supplied to the adjustment bottom surface 2
Discharge the stone debris a above 0, and after a certain period of time,
5, the remaining grains b on the sorting frame 10 are allowed to pass through the adjustment bottom surface 20 and fall from the stone waste drop port 24,
The fallen residual grains b are transferred to the grain outlet 37 through the return pipe 36.
Since this is a device for removing stone debris from grains that can be switched freely to return to
When the wind to the adjustment bottom surface 20 is stopped and the grain is discharged from the stone waste outlet 24, it is blown by the wind of the auxiliary windmill 29 and returned to the grain outlet 37 through the return pipe 36, so that the remaining grain can be recovered. play.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view of the present invention.

[Figure 2] A vertical sectional side view.

[Figure 3] The same plan view.

FIG. 4 is a diagram showing the operation state of arm upward movement.

[Fig. 5] A diagram of the working state of the arm horizontally.

[Fig. 6] Diagram showing the operation state of arm downward movement.

FIG. 7 is a diagram showing the enlargement action when the arm is moving upward.

FIG. 8 is a state diagram showing the problems of the known example.

[Explanation of symbols]

1...Case, 2...Lower case, 3...Upper case, 4...Trash can, 5...Guide plate, 6...Motor, 7...Windmill case, 8...
Windmill, 9... Opening, 10... Sorting frame, 11... Inclined support rod, 1
2... Eccentric cam, 13... Rod, 14... Side wall, 15... Bottom surface, 16... Blow hole, 17... Protrusion, 18... Supply hopper, 19
... Constant height, 20 ... Adjustable bottom surface, 21 ... Side wall, 22 ... Cover, 23 ... Curved wall, 24 ... Drop opening, 25 ... Pivoting part, 26 ...
Spiral tube, 27...Adjustment screw, 28...Sub-wind turbine case, 29...Sub-wind turbine, 30...Top opening, 31...Switching valve, 32...Shaft, 3
3... Arm, 34... Outlet, 35... Stone falling part, 36... Return pipe, 37... Grain outlet, 38... Upper switch, 39... Center switch, 40... Lower switch, 41... Motor, 42
...Pinion, 43...Rack, 44...Stone waste storage box, 45...
Blower port, 46... Lower surface of floating grain, 47... Suction port, 48...
Communication port, 49... Stone waste storage room, 50... Space, a... Stone waste, b
…grain.

Claims (1)

[Claims] 1. A sorting frame 10 having a bottom surface 15 in which numerous blowholes 16 and protrusions 17, a grain outlet 37 at the rear end, and a communication port 48 at the front end are formed, and an upper surface side of the bottom surface 15. In the device for removing stone debris in grains, the apparatus includes a blower device 8 installed at a lower position of the sorting frame 10 to levitate the grains b supplied to the bottom surface 15 to a certain height 19.
When viewed from above, the structure has a V-shaped structure that becomes narrower from the center to the front end, and a small communication port 48 is formed at the front end of the structure, and a stone waste storage chamber 49 is connected to the communication port 48. The bottom of the stone debris storage chamber 49 is an adjustment bottom surface 2 having a large number of blowholes 45.
0, and a stone waste falling port 24 is formed at the tip of the adjustment bottom surface 20, and the front end is formed at the upper position of the sorting frame 10.
4 is provided with a return pipe 36 whose rear end is opened in the vicinity of the grain outlet 37, and a subwind turbine 29 separate from the blower device 8 is provided at a lower position of the adjustment bottom surface 20. A switching valve 31 is provided at the air outlet 34 of the wind turbine 29, and the switching valve 3
1 is ■ During the stone waste removal work where grain b is being supplied,
All of the wind from the auxiliary windmill 29 is supplied toward the nozzle 45 of the adjustment bottom surface 20, and when the supplied grain b runs out, the amount of air from the auxiliary windmill 29 that is supplied to the nozzle 45 is reduced, and The upper stone chips a are discharged, and after a certain period of time, the air supply to the blowhole 45 is stopped, and the remaining grains b on the sorting frame 10 are allowed to pass through the adjustment bottom surface 20 and fall from the stone chips drop port 24. A device for removing stone debris in grains which can be switched freely so that the fallen residual grains b are returned to a grain outlet 37 through a return pipe 36.