JPH0734896B2 - Exhaust device of stone removing sorter - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a stone removing and sorting machine for removing pebbles contained in grains such as rice and wheat, and particularly to a grain removing machine which remains in the machine at the end of operation. The present invention relates to a discharging device of a stone removing and sorting machine for discharging all stones.

[Conventional technology]

In a conventional stone removing sorter, for example, Japanese Patent Publication No. 58-53590
As shown in FIG. 5 (see FIG. 5), a sorting board 102 having a large number of blowholes 101 is placed on the upper edge of a windmill box 100 having a built-in windmill in an inclined manner, The sorting board 102 is vibrated by connecting a vibration mechanism, and the grain on the sorting board 102 is discharged from the refined product discharge port 103 at the lower end of the slope by this vibration action and the blowing action from the blowhole 101, and The stone pieces contained therein are discharged from the stone removing port 104 at the upper end of the slope to perform sorting.

By the way, if the supply of raw material grains is stopped at the end of work,
The grain on the sorting board 102 has no effect of flowing out from the refined product discharge port 103 while being pushed by the grain to be supplied later, and the sorting board 1 has a rough surface shape due to a large number of blow holes 101.
It is sent to the upper part of the slope by the vibration of 02. And the sorting board
The stone fragments that have stagnated near both shoulders 102a on the upper side of the slope of 102 are discharged from the stone removing port 104 without sorting. In this way, the total discharge of the grains at the end of the work is very troublesome, and there is almost no sorting effect, so if you plan to sort grains of the same type next time, the grains on the sorting board 102 Remained. Also, in rice mills, etc., for example, there are two series of lines, a line for glutinous rice and a line for lanterns, and a stone removing and sorting machine dedicated to urushi and a stone removing and sorting machine dedicated to glutinous rice are provided to discharge the entire amount. It was designed so that it would not need to be cleaned.

[Problems to be solved by the invention]

Other examples of sorting boards for stone removing sorters include those disclosed in Japanese Examined Patent Publication No. 54-36103 and those disclosed in Japanese Examined Publication No. 55-55176. (See FIG. 6), a narrow stone outlet 107 is provided at the center of one side wall 106 of the perforated plate 105 having a rectangular long plane.
The eye 108 near is formed so as to open in the direction of the stone outlet 107 so as to blow out the wind. On the other hand, in Japanese Utility Model Publication No. 55-55176, as shown in FIG.
Inside the vicinity of the partition wall 110 on the higher side of 9 is a perforated plate 113 having a step and a low height and having a ventilation port 112 for blowing air toward the outlet 111, and at the end of the perforated plate 113. Is stone outlet 11
4 is formed, and this stone discharge port 114 is formed by providing a ventilation port 115 for blowing wind in the stone dust discharge direction.

However, even in the sorting perforated plate 105 or the sorting board 109, the operation is troublesome at the end of the sorting work, and in particular, when the grains on the sorting perforated panel 105 and the sorting board 109 become sparse, The wind has escaped, and the eye 108 and the vent 11
2, the velocity of the air blast from the ventilation port 115 is significantly reduced, and the grains existing on the eyes 108, the ventilation ports 112 and 115,
The stone remains in the plane without being transported anymore, and it is not possible to discharge the entire stone.

The present invention was developed in view of the above, and it is a technical object to provide a discharging device of a stone removing sorter capable of completely discharging the grain in the machine at the end of the sorting work.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention mounts a sorting board, which has a large number of projections and blowout holes, on the upper part of a fan case that is oscillatingly supported in a machine frame with a gentle inclination, In a stone removing / sorting machine in which each end is opened and the slanted lower end is formed as a refined product outlet and the slanted upper end is formed as a mixed grain dropping port, a. A slender secondary sorting board having a large number of projections and blow holes is provided so as to be gently inclined along with one side of the sorting board and in communication with the fan case.

B. The inclined lower end (of the secondary sorting board) is used as a refined product return port, the inclined upper end is used as a stone removing port, and an intermittent discharging device for retaining stones to some extent is provided at the stone removing port.

C. The mixed grain dropping port and the secondary sorting board are connected by a lateral gutter.

D. Further, a forced discharge trough having a lower inclined end serving as a forced discharge port is provided along the secondary sorting board with a gentle inclination.

E. A communication port leading to the forced discharge gutter is provided near the upper slope of the secondary sorting board, and an on-off valve is provided at the communication port.

I took the technical means.

[Work]

During normal operation, most of the refined products among the grains that are supplied to the sorting board accompanied by the blast and the vibration action are discharged from the refined product outlet at the lower end of the slope to the outside of the machine, and the remaining refined products and stones. The mixed grains fall from the mixed grain dropping port at the upper end of the slope into the lateral feeding trough and are conveyed to the secondary sorting board. During the mixed grain of the secondary sorting board, the refined product is discharged from the refined product return port at the lower end of the slope, and the stone is accumulated after being accumulated to some extent by the intermittent discharge device at the upper end of the slope.

At the end of the operation, when there is no more raw material to be supplied to the sorting board, all the grains on the sorting board are sent to the secondary sorting board by the horizontal transfer gutter and selected. After the stones are discharged by the intermittent discharge device, the on-off valve is opened to send the refined product to the forced discharge trough, and the whole amount of the grain is discharged from the forced discharge port.

Example of Invention

 A preferred embodiment of the present invention will be described with reference to the drawings.

The stone removing sorter 1 is formed by a box-shaped machine frame 2,
A supply hopper 3 is provided at a substantially central portion of an upper surface wall of the machine frame 2 (see FIG. 1). An opening 4 is opened at the lower end of the supply hopper 3, and a shutter plate 5 for opening and closing the opening 4 is slidably provided, and an operating rod 6 for operating the shutter plate 5 is provided so as to project outside the machine frame 2. A vibrating level sensor 7, for example, is provided near the bottom of the supply hopper 3 as a grain presence / absence detector.

A fan case 8 is swingably provided in the machine frame 2.
That is, the wall support shafts 9 and 10 of the fan case 8 are welded, and both ends of the support shaft 9 are supported by a pair of bearings 11. The bearings 11 are fixed to one end of a pair of swing arms 12, respectively. The other end of the moving arm 12 is fixed to a support shaft 13, and both ends of the support shaft 13 are pivotally supported by a pair of bearings 14 fixed to both side walls of the machine frame 2. Similarly, both ends of the support shaft 10 are supported by a pair of bearings 15, the bearings 15 are fixed to one ends of a pair of swing arms 16, and the other end of the swing arms 16 are fixed to a support shaft 17, Both ends of the support shaft 17 are fixed by a pair of bearings 18 fixed to both side walls of the machine frame 2.

A vibrating mechanism for imparting a vibrating action to the fan case 8 swingably supported in the machine frame 2 in this manner will be described. A crankshaft 20, which receives a rotational force by the crank pulley 19, is rotatably supported by one side wall of the machine frame 2 and a bearing plate 21, and an eccentric portion of the crankshaft 20 and a mounting plate 21 of the fan case 8 are connected to a crank arm 23. The fan case 8 vibrates diagonally up and down as shown by an arrow W with the support shafts 13 and 17 as fulcrums.

An upper part of the fan case 8 is opened and a sorting board 24 is mounted on the upper part. Further, intake ports 25 are opened on both side walls of the fan case 8, and the fan shaft 26 penetrates the intake ports 25 and is rotatably supported by both side walls of the machine casing 2. The fan 27 is fixed to the fan shaft 26, and the fan shaft 26
A fan pulley 28 is attached to one end of the fan pulley 28, and the crank pulley 19 and the fan pulley 28 are rotated by an electric motor 29. The motor pulley 30, the crank pulley 19, and the fan pulley 28 of the electric motor 29 are interlocked by a V belt 31. It is connected.

Next, the sorting board 24 and others will be described with reference to FIGS. The sorting board 24 is mounted on the upper part of the fan case 8 with a gentle inclination, and is connected to a large number of blow holes 32 ... A protrusion 33 formed so as to have a rocking action is provided. Further, side walls 34, 34 are erected on both sides of the sorting board 24 in the slanting direction, the slanted upper end and the lower end are opened, the upper end is the mixed grain drop port 35, and the lower end is the refined product outlet. It is formed into 36. Then, at a position closer to the mixed grain drop port 35 than the mixed grain drop port 35, and in the fan case 8
A lateral sending gutter 37 that communicates with the lateral sending gutter 37 is attached, and the lateral sending gutter 37 is formed with a large number of blow holes 38 facing the lateral sending gutter discharge port 37a.

At the side of the sorting board 24, an elongated secondary sorting board 39 is provided along with the side wall 34. That is, the secondary sorting board 39 is connected to the lateral-feeding gutter outlet 37a and is attached to the sorting board 24 at a position lower than the lateral-feeding gutter outlet 37a and at substantially the same inclination as the sorting board 24. The secondary sorting board 39, like the sorting board 24,
A large number of projections 33 and jet holes 32 having a rocking action on the upper side of the slope.
And (Fig. 4), the wind generated by the fan 27 is
The upper part of the fan case 8 and the secondary sorter so that it spouts from 32
The back side of 39 is airtightly connected. In addition, the inclined lower end of the secondary sorting board 39 is opened to form a refined product return port 40, and the inclined upper end is extended from the lateral transmission gutter 37 to form a stone removing port 41. Intermittent discharge device for staying to some extent
42 is provided.

Explaining the intermittent discharge device 42 (Fig. 3), a rotary shaft 43 is provided on the back side of the surface of the secondary sorting board 39, and the tip end is bent in an arc to open and close the stone removing opening 41. The valve 44 is mounted on the rotary shaft 42. As a result, the rotary valve 44 rotates with the rotation of the rotary shaft 42, and the tip end of the rotary valve 44 moves toward the stone removing port.
Open and close 41. A lever 45 is fixed to the end of the rotary shaft 42,
The end of the lever 45 and the solenoid 46 are connected by a connecting fitting 47. In addition, the stone removing port 41 on the surface of the secondary sorting board 39
A stone detector 48 consisting of a light emitting element and a light receiving element is buried slightly below the inclination, and the stone detector 48 and the solenoid are activated so that the solenoid 46 is excited by a signal that the stone detector 48 detects the presence of stone. It is electrically connected to 46.

A forced discharge gutter 49 is attached to the secondary sorting board 39 at a position lower than that of the secondary sorting board 39 and along with the secondary sorting board 39 with a gentle inclination. The inclined lower end of the forced discharge gutter 49 is used as a forced discharge port 50 for the refined product, and a blowhole 51 facing the forced discharge port 50 is provided on the bottom of the gutter.
A large number of ... Are provided, and the back surface of the forced exhaust gutter 49 and the fan case 8 are arranged so that the wind generated by the fan 27 is ejected from the blowhole 51.
The upper part of is connected airtightly.

On the side wall near the stone removal opening 41 of the secondary sorting board 39, a forced discharge gutter
A communication port 52 leading to 49 is opened, and an opening / closing valve 53 is provided in the communication port 52.
A rotary solenoid 55 is directly connected to the shaft 54, and the rotary solenoid 55 is electrically connected to the level sensor 7 of the supply hopper 3 via a timer (not shown). To be done.

Furthermore, an inspection door 56 for inspecting the inside is provided on one side of the upper portion of the machine frame 2.
Below the stone removing port 41, a stone discharging gutter 57 having a discharging portion projecting outside the machine frame 2 is fixed to the machine frame 2. On the other hand, below the purified product outlet 36, purified product return port 40, and forced discharge port 50, a purified product discharge gutter 58 integrated with the fan case 8 is provided, and the purified product discharge gutter 58 is projected to the outside of the machine frame 2. Opening 59 to let
Is provided.

Next, the operation of this embodiment will be described.

Rice grains discharged from a rice polishing machine (not shown) are put into the supply hopper 3 by a chute pipe or the like, the electric motor 29 is started, the operating rod 6 is pulled, and the shutter plate 5 is slid to open the opening 4.

Since the sorting board 24 vibrates integrally with the fan case 8 and the wind generated by the fan 27 blows out from the blast holes 32 onto the sorting board 24 (Fig. 4), rice grains are slightly blown by this blast. The rice tends to float from the surface of the board, and while being pushed by the rice grains falling from the supply hopper 3, it flows down to the side of the refined product outlet 36, and is eventually discharged to the outside of the machine through the refined product discharge gutter 58.

On the other hand, stones mixed in rice grains have a large specific gravity, so
It does not float up from the inside, and the projection 33 ...
It is pushed up to the side and finally with a few rice grains
Drop into 36. The plate surface (shown by the chain double-dashed line) in the vicinity of the mixed grain drop port 35 can be bent upward so that the raw rice grains can be promptly spread over the entire sorting panel 24 at the start of the operation. In this way, the stones that have fallen into the horizontal gutter 36 never return to the sorting board 24, and become a mixed grain flow of stones and rice grains. It is transported into the secondary sorting board 39. When the mixed particles spread over the entire secondary sorting disc 39, the refined product falls from the refined product return port 40 into the refined product discharge trough 58, and the stone is swung toward the stone removing port 41 side above the slope, similarly to the sorting disc 24. . In this way, when a stone accumulates in the vicinity of the stone removing port 41 to some extent and the amount of light received by the stone detector 48 changes, this change is converted into an electric signal and amplified by an amplifier (not shown) to be relayed by a relay operating circuit (see FIG. (Not shown), the solenoid 46 is excited by this, the rotary valve 44 is retracted from the stone removing port 41 via the lever 45 and the rotation shaft 43 to open the stone removing port 41, and the vicinity of the stone removing port 41 is opened. The stone is dropped into the stone discharge gutter 57 and discharged outside the machine. When stones are discharged, the amount of mixed particles in the secondary sorting disc 39 is increased by that amount.
Since the stone detector 48 receives the light from the mixed particles again, the solenoid 46 is demagnetized by the signal from the stone detector 48, and the rotary valve 44 is centered on the rotary shaft 43. It rotates to project upward from the surface of the secondary sorting board 39 and close the stone removing port 41. When the stones are accumulated in the vicinity of the stone removing port 41 to some extent, the above operation is repeated and the stones are intermittently discharged.

The above is the operation at the time of so-called steady operation, and the operation at the end of operation will be described below. If the rice grains in the supply hopper 3 run out during continuous operation, the rice grains on the sorting board 24 will not be pushed by the rice grains falling from the supply hopper 3, and will be sent to the side of the mixed grain drop port 35, where It is conveyed to the secondary sorting board 39 by the gutter 37. Meanwhile, supply hopper 3
The level sensor 7 provided near the bottom detects "no rice grain", and this signal is amplified to activate a timer (not shown). Then, when the timer is timed out when the sorting by the secondary sorting board 39 is completed, this signal is input to a relay operating circuit (not shown), and the rotary solenoid 55 is excited to open the open / close valve 53 ( Fig. 3 two-dot chain line), access port 52
To open. When the communication port 52 opens, the rice grains that are rocked upward on the slope drop from the communication port 52 into the forced discharge gutter 49, and are forcedly and rapidly flowed down by the blast directed toward the forced discharge port 50 and forcedly discharged. 50 is discharged to the outside of the machine through the refined product discharge gutter 58.

In addition, in the above-mentioned embodiment, the lateral transfer gutter 37 and the forced discharge gutter are provided.
To facilitate the transportation of rice grains by forming a large number of air blow holes in the gutter bottom of 49, the horizontal transport gutter 37 and the forced discharge gutter 49 were simply tilted without providing air blow holes. In some cases, an appropriate transporting means may be used. Further, instead of the rotary valve as the intermittent discharging device, the gutter bottom near the stone removing port may be formed to be bendable so as to dam the stone.

〔The invention's effect〕

Since the present invention has taken the above technical means, it has the following remarkable effects.

A. At the end of the operation, the grains transferred to the secondary sorting board can be transferred to the forced discharge trough and the whole amount can be discharged quickly.

B. Stones are not mixed into the grain discharged from the forced discharge gutter, and only refined products are used.

C. Since the mixed grains containing stones are dropped into the traverse trough from the mixed grain drop opening having the step, the stones once separated do not return to the refined product again.

D. Since cleaning is not required after the operation is completed, unmanned operation is possible when installed in a rice polishing plant, etc., and different lines of different types of grain can be sorted and processed sequentially in one line.

[Brief description of drawings]

1 is a side sectional view of an embodiment of the present invention, FIG. 2 is a partially enlarged perspective view of FIG. 1, FIG. 3 is a further partially enlarged perspective view of FIG. 2, and FIG. FIG. 5 is a perspective view of a conventional example, and FIGS. 6 and 7 are plan views of a conventional selection board. 1 ... Stone removing sorter, 2 ... Machine frame, 3 ... Supply hopper,
4 ... Aperture, 5 ... Shutter plate, 6 ... Actuating rod, 7 ...
… Level sensor, 8 …… Fan case, 9,10 …… Support shaft, 11 …… Bearing, 12 …… Swing arm, 13 …… Support shaft, 14,1
5 …… Bearing, 16 …… Swinging arm, 17 …… Spindle, 18 …… Bearing, 19 …… Crank pulley, 20 …… Crankshaft, 21…
… Bearing plate, 22 …… Mounting plate, 23 …… Crank arm, 24
…… Sorting panel, 25 …… Intake port, 26 …… Fan shaft, 27 …… Fan, 28 …… Fan pulley, 29 …… Electric motor, 30 …… Motor pulley, 31 …… V belt, 32 …… Just Hole, 33 ...
… Protrusions, 34 …… Sidewalls, 35 …… Mixed grain drop openings, 36 …… Refined product outlets, 37 …… Horizontal feeding gutters, 37a …… Horizontal feeding gutter outlets, 38 ……
Blaze hole, 39 …… Secondary sorting board, 40 …… Refining hole, 41 ……
Stone removal port, 42 ... Intermittent discharge device, 43 ... Rotating shaft, 44 ... Rotating valve, 45 ... Lever, 46 ... Solenoid, 47 ... Coupling metal, 48 ... Stone detector, 49 ... Forced discharge gutter, 50 …… Forced discharge port, 51 …… Blowhole, 52 …… Communication port, 53 …… Open / close valve, 54
…… Axis, 55 …… Rotary solenoid, 56 …… Inspection door,
57 …… Stone discharge gutter, 58 …… Refined product discharge gutter, 59 …… Opening.

Claims (5)

[Claims] 1. A sorting board, which has a large number of projections and air blow holes, is mounted on the upper part of a fan case which is vibratably supported in a machine frame with a gentle inclination, and the upper and lower ends of the tilt are opened. In the stone removing sorter in which the slanted lower end is formed as the refined product outlet and the slanted upper end is formed as the mixed grain dropping port, the slender lower end is attached to one side of the sorting board and communicated with the fan case, and a large number of protrusions and A slender secondary sorting board with blowholes is provided with a gentle slope, the bottom end of the slope serves as a product return port, the top end of the slope serves as a stone removal port, and stones are retained to some extent at the stone removal port. A forced discharge gutter provided with an intermittent discharge device, connecting the mixed grain drop port and this secondary sorting board by a lateral feeding gutter, and further along with the secondary sorting board, the inclined lower end serving as a forced discharge outlet. Is installed with a gentle inclination, and a forced discharge gutter is installed near the upper end of the inclination of the secondary sorting board. Discharge device for stone 抜選 by machine, characterized in that a closing valve for connecting port with communication opening a provided that. 2. A gutter bottom of the forced discharge gutter is formed with a large number of air blow holes facing the forced discharge port side, and the forced discharge gutter is connected to a fan case. ) The device for ejecting a stone removing sorter described in the item. 3. The intermittent discharge device comprises a rotary valve for shutting off the stone removing port, a solenoid for operating the rotary valve, and a stone detector provided near the stone removing port. The ejector of the stone removing sorter according to item (1) or (2). 4. A lateral bottom gutter is provided with a large number of projections and blow holes on the bottom of the trough, and the lateral trough communicates with a fan case. Discharge device of the stone removing sorter according to any one of the ranges (1) to (3). 5. A rotary solenoid is connected to the rotary shaft of the on-off valve, while a grain presence / absence detector is provided at an arbitrary position up to the discharge portion of the lateral gutter, and the grain presence / absence detector is provided with no grain presence. Claims (1) to (4), wherein the grain presence / absence detector and the rotary solenoid are electrically connected so that the rotary solenoid is actuated to open the on-off valve by the signal detecting Discharge device of the stone removing sorter described in the item.