JPS63156575A - Discharger for destoning 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] [Industrial Application Field] This invention relates to a stone removal sorter that removes pebbles contained in grains of rice, wheat, etc. This invention relates to a discharge device for a stone removal sorter for discharging the entire amount of stones.

[Conventional technology]

For conventional stone removal sorting machines, for example,
As shown in the '590 publication (see Fig. 5), a large number of blow holes 101 are provided on the upper edge of a wind turbine box 100 containing a wind turbine.
The sorting board 102 formed with the wind turbine box 10 is placed in an inclined manner.
0 is connected to a camera mechanism to vibrate the sorting W1102, and the grains on the sorting board 102 are discharged from the refined product outlet 103 at the lower end of the slope by the vibration action and the blowing action from the blowhole 101. The stone pieces contained in the grains are discharged from the stone outlet 104 at the lower end of the slope for sorting.

By the way, if the supply of raw material grains is stopped at the end of the work,
The grains on the sorting board 102 no longer flow out from the refined product outlet 103 while being pushed by grains supplied later, and are tilted by the vibration of the sorting board 102, which has a rough surface shape due to the large number of blowholes 101. sent upwards. Then, the stone pieces are discharged from the stone extraction port 104 in an unsorted state together with the stone pieces that remain near both shoulders 102a on the upper side of the slope of the sorter 1102. In this way, discharging the entire amount of grains at the end of the work is extremely troublesome, and there is almost no sorting effect. was left in place. Also,
In rice milling factories, for example, there are two lines, one for uruchi and one for mochi, and a stone-removal sorter for uruchi and a stone-removal machine for mochi are installed, and all the rice is discharged and cleaned. The design was such that there was no need to do so.

[Problems to be solved by the invention] In addition to the sorting board for stone removal sorting machines, there is
There are those shown in Publication No. 03 and those disclosed in Publication Utility Model Publication No. 55-55176.
No. 103 (see Fig. 6) has a narrow stone outlet 107 in the center of one side wall 106 of a perforated screening plate 105 with a rectangular planar shape, and an opening 108 near the side wall 106 is in the direction of Ishikawa Ro 107. It has an opening shaped to blow out the wind. As shown in FIG. 10, in the other Utility Model Publication No. 55-55176, the inside near the partition wall 110 on the high side of the sorting board 109, which has a substantially rectangular planar shape, has a step and is low in height. , and a perforated plate 113 formed with a ventilation port 112 that blows air in the direction of the outlet 111. A stone discharge port 114 is formed at the end of the perforated plate 113, and a stone discharge port 114 is formed in the stone waste discharge direction. It is formed by providing a ventilation hole 115 for blowing wind.

However, the sorting perforated plate 105 or the sorting plate 1
09, the operation is troublesome at the end of the sorting work, and in particular, when the perforated sorting plate 1052 and the sorting plate 102 become sparse, the wind from the windmill escapes, and the openings 1121 The speed of the jet from the ventilation port 115 decreases significantly, and the
．． One stone of grains present on each part of 115 remains in the machine without being transported any further, and it is impossible to expect the entire amount to be discharged.

This invention has been developed in view of the above, and its technical object is to provide a discharge device for a stone removal sorter that can completely discharge the grains inside the machine when the sorting operation is finished.

[Means for solving problems]

In order to solve the above-mentioned problems, this invention has a sorting board formed with a large number of protrusions and blowholes mounted on the top of a fan case that is movably supported within the machine frame at a gentle inclination. In a stone removal sorter in which the upper and lower ends are opened, the slanted lower end is formed as a fine product outlet, and the slanted upper end is formed as a mixed grain falling port, a. A slender secondary sorting board with a large number of protrusions and blowholes connected thereto is installed at a gentle slope.

The lower end of the slope (of the secondary sorting board) is used as the fine product return port, the upper end of the slope is used as the stone outlet, and the stone outlet is provided with an intermittent discharge device to retain stones to some extent.

C. Connect the mixed grain dropping port and this secondary sorting board by a cross-feeding gutter.

2. Furthermore, a forced discharge gutter whose sloping lower end serves as a forced discharge port is provided along the secondary sorting board with a gentle slope.

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

This technical measure was taken.

(Function) During normal operation, most of the refined grains supplied to the sorting board, which is accompanied by blowing air and vibration, are discharged from the grain outlet at the lower end of the slope, and the remaining refined grains are The mixed grains with stone fall into the horizontal feed gutter from the mixed grain inlet at the upper end of the slope and are conveyed to the secondary sorting board. Among the mixed grains of the secondary sorting board, fine grains are transported through the fine product return port at the lower end of the slope. The stone is ejected by an intermittent ejector at the top of the incline after it has accumulated to some extent.

At the end of the operation, when the raw material supplied to the sorting plate is exhausted, the grains on the sorting plate are sent to the secondary sorting plate by the cross-feeding trough to be sorted.

After the stones are discharged by the intermittent discharge device, the on-off valve is opened to send the fine grains to the forced discharge gutter, and all the grains are discharged from the forced discharge port.

[Embodiments of the invention]

A preferred embodiment of the present invention will be described based on the drawings.

The stone removal sorter 1 is formed by a box-shaped machine frame 2,
A supply hopper 3 is provided approximately in the center of the upper 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 to protrude outside the machine frame 2. Further, near the bottom of the supply hopper 3, a vibrating level sensor 7, for example, is provided as a grain presence/absence detector.

A fan case 8 is provided in the machine frame 2 so as to be swingable. That is, the wall support shafts 9 and 10 of the fan case 8 are welded together, and both ends of the support shaft 9 are supported by a pair of bearings 11, and these bearings 11 are each fixed to one end of a pair of swing arms 12, so that the support shafts 9 and 9 are welded together. The other end of the movable 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, each of which is fixed to one end of a pair of swinging arms 16, and the other end of the swinging arm 16 is fixed to a support shaft 17. Both ends of the support shaft 17 are fixed to a pair of bearings 18 fixed to both side walls of the machine frame 2.

A vibration mechanism for imparting a vibration effect to the fan case 8, which is swingably supported within the machine frame 2 in this manner, will be described. The crankshaft 2o, which receives rotational force from the crank pulley 19, is rotatably supported by one side wall of the machine frame 2 and a bearing plate 21. 23, and as a result, the fan case 8 can be moved diagonally up and down as shown by the arrow W using the support shafts 13 and 17 as fulcrums.

The upper part of the fan case 8 is opened, and a sorting board 24 is mounted on the upper part. Further, air intake ports 25 are formed on both side walls of the fan case 8, and the fan shaft 26 passes through the air intake ports 25 and is rotatably supported on both side walls of the machine frame 2. A fan 27 is fixed to the fan shaft 26, and a fan pulley 28 is fixed to one end of the fan shaft 26, and the fan pulley 28 and the crank pulley 19 are rotated by an electric motor 29. The pulley 30, crank pulley 19, and 7-amp pulley 28 are interlocked and connected by a V-belt 31.

Next, the sorting board 24 and the like will be explained with reference to FIGS. 2 to 4. The sorting board 24 is mounted on the upper part of the fan case 8 with a gentle slope, and is connected to a large number of blowholes 32 over the entire board surface of the sorting board 24 to the lower side of the blowholes 32 and is inclined. A protrusion 33 formed to have a rocking effect is provided above. In addition, side walls 34° 34 are erected on both sides of the sorting board 24 in the direction of inclination, and the upper end and the lower end of the inclination are opened so that the upper end serves as a mixed grain falling port 35 and the lower end serves as a fine product outlet. It is formed in 36.

A cross-feeding gutter 37 is provided at a position closer to the mixed grain falling port 35 and communicating with the fan case 8.
The cross-flow gutter 37 is provided with a large number of blowholes 38 facing toward the cross-flow gutter outlet 37a.

A secondary sorting plate 39 having an elongated shape is provided on the side of the sorting plate 24 along with the side wall 34 . In other words, the secondary sorting board 3
9 is connected to the cross-feeding gutter outlet 37a, and is attached to the sorting plate 24 at a lower position than the cross-feeding gutter outlet 37a and at approximately the same inclination as the sorting plate 24. Similar to the sorting board 24, the secondary sorting board 39 is formed with a large number of protrusions 33 and blowholes 32 that have a rocking effect on the upward slope (Fig. 4), so that the wind generated by the fan 27 flows through the blowholes. As if gushing from 32,
The upper part of the fan case 8 and the back surface of the secondary sorting board 39 are airtightly connected.

In addition, the lower end of the secondary sorting board 39 is opened to form a fine product return port 40, and the upper end of the slope is extended beyond the horizontal gutter 37 to form a stone takeout port 41. An intermittent discharge device 42 is provided to allow some retention.

To explain the intermittent discharge device 42 (Fig. 3), a rotating shaft 43 is provided on the back side of the board surface of the secondary sorting board 39, and
A rotary valve 44 whose tip is bent into an arc shape is pivotally mounted on a rotary shaft 42 in order to open and close the stone outlet 41. As a result, the rotary valve 44 rotates as the rotary shaft 42 rotates, and the rotary valve 44 rotates as the rotary shaft 42 rotates.
The tip opens and closes the stone outlet 41. A lever 45 is fixed to the end of the rotor 142, and the end of the lever 45 and the solenoid 46 are connected by a connecting fitting 47. In addition, a stone detector 4 consisting of a light emitting element and a light receiving element is located slightly below the stone extraction port 41 on the surface of the secondary sorting plate 39.
8 is buried, and the stone detector 48 is configured such that the solenoid 46 is energized by a signal that the stone detector 48 detects the presence of a stone.
and solenoid 46 are electrically connected.

A forced discharge gutter 49 is attached to the secondary sorting plate 39 at a position lower than the secondary sorting plate 39 and along the secondary sorting plate 39 with a gentle slope. The inclined lower end of the strong Y1 discharge gutter 49 serves as a forced discharge port 50 for refined products, and the forced discharge port 50 is provided at the bottom of the gutter.
The back surface of the forced discharge gutter 49 and the upper part of the fan case 8 are airtightly connected so that the wind generated by the fan 27 is blown out from the blow holes 51.

A communication port 52 leading to the forced discharge gutter 49 is opened in the side wall near the stone outlet 41 of the secondary sorting board 39, and an on-off valve 53 is provided in the communication port 52 so as to be rotatable by a shaft 54. 54 is directly connected to a rotary solenoid 55, and the rotary solenoid 55 is connected to the supply hopper 3.
The level sensor 7 is electrically connected to the level sensor 7 via a timer (not shown).

Furthermore, on the upper side of the machine frame 2, there is an inspection door 5 for inspecting the inside.
6 is provided below the stone outlet 41, and a stone discharge gutter 57 having a discharge portion protruding outside the machine frame 2 is fixed to the machine frame 2. On the other hand, the fine product outlet 36, the fine product return hole 40. Forced discharge port 50
A precision product discharge FA is installed below the fan case 8.
5B, and the machine frame 2 is provided with five openings for projecting the fine product discharge gutter 58 to the outside of the machine.

Next, the operation of this embodiment will be explained.

Rice grains discharged from a rice mill or the like (not shown) are fed into the supply hopper 3 through a shoe 1 through a pipe, etc., the electric FJ% 29 is activated, the operating rod 6 is pulled, the shutter plate 5 is slid, and the opening 4 is opened.

The sorting board 24 vibrates together with the fan case 8, and
? The wind generated by the wind blower 27 flows from the blowhole 32 to the sorting plate 2.
4 (Fig. 4), the rice grains tend to rise slightly from the surface of the board due to this jet, and are pushed by the rice grains falling from the supply hopper 3 to the refined product outlet 36.
It flows down to the side and is eventually discharged to the outside of the machine via the fine product discharge gutter 58.

On the other hand, the stones mixed in the rice grains have a high specific gravity, so the sorting board 2
The mixed grains do not float from the rice grains 4 and are pushed up toward the mixed grain drop port 35 side by the protrusions 33, and finally fall into the horizontal feed gutter 36 along with a few rice grains. In addition, the mixed grain falling port 35
The nearby plate surface (indicated by the two-dot chain line) can be bent upward, so that raw rice grains can be quickly transferred to the sorting plate 24 at the start of operation.
It may also encourage it to spread throughout the body.

The stones that fell into the cross-feeding gutter 36 in this way
The mixed grains of stones and rice grains do not return to the top and are conveyed into the three secondary sorting boards from the horizontal gutter outlet 37 by the jet from the blowhole 38. When the mixed grains are spread over the entire secondary sorting board 39, like the sorting board 24, the refined products fall from the refined product return port 40 into the refined product discharge gutter 58, and the stones are swung upward toward the stone take-out port 41 side. It will be done. In this way, when stones accumulate to some extent near the stone extraction port 41 and a change occurs in the amount of light received by the stone detector 48, this change is converted into an electrical signal, amplified by an amplifier (not shown), and relay actuating circuit (
(not shown), the solenoid 46 is energized, the rotary valve 44 is retracted from the stone outlet 41 via the lever 451, and the stone outlet 41 is opened. are dropped into the stone discharge gutter 57 and discharged outside the machine. Once the stones are discharged, a second sorting takes place! The mixed grains in 139 are shaken up to the stone extractor 41 side by that amount, and the stone detector 48
receives the light from the mixed grains again, so this stone detector 4
The solenoid 46 is demagnetized by the signal from 8, and the rotary valve 44 rotates about the rotating shaft 43 to protrude upward from the surface of the three secondary sorting plates and close the stone outlet 41. and,
When a certain amount of stones accumulate near the stone outlet 41, the above operation is repeated to intermittently discharge the stones.

The above is the operation during so-called steady operation, and the operation at the end of operation will be described below.

When the rice grains in the supply hopper 3 run out during steady operation, the rice grains on the sorting board 24 are not pushed by the rice grains falling from the supply hopper 3, so they are sent upward to the mixed grain drop port 35 side and It is conveyed to the secondary sorting board 39 by the feed gutter 37. On the other hand, the level sensor 7 provided near the bottom of the supply hopper 3 detects "no rice grains", and this signal is amplified to start a timer (not shown). And the secondary sorting board 39
Towards the end of the sorting, when the timer times up, this signal is input to the relay operating circuit (not shown), and the rotary solenoid 55 is energized to close the on-off valve 53. Open the mouth 52. When the communication port 52 opens, the rice grains that are swung up the slope fall from the communication port 52 into the forced discharge gutter 49, and are forced and rapidly flowed down by the jet of air directed toward the forced discharge port 50. 50 and is discharged to the outside of the machine via a fine discharge gutter 58.

In the above embodiment, a large number of blowholes facing the rice grain conveying direction were formed at the bottom of the horizontal feed gutter 37 and the forced discharge gutter 49 to promote the conveyance of rice grains. In some cases, the cross-feed gutter 37 and the forced discharge gutter 49 may simply be tilted, or other suitable conveying means may be used. Furthermore, instead of using a rotary valve as an intermittent discharge device, the bottom of the gutter near the stone outlet may be bendable to block stones.

〔Effect of the invention〕

Since the present invention takes the above technical measures, the following remarkable effects are achieved.

A. At the end of the operation, the grains transported to the secondary sorting board are transferred to the forced discharge gutter, and all ω can be quickly discharged.

No stones are mixed into the grains discharged from the B8 force side,
Only the finest products.

Since the mixed grains containing C1 stone are quickly dropped into the cross-feeding gutter from the mixed grain drop opening having a step, the separated stones do not return to the refined product.

D. There is no need for cleaning after the operation is completed, so when installed in a rice milling plant, etc., unmanned operation is possible, and one line can sequentially sort and process grains of different types.

[Brief explanation of the drawing]

Fig. 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. 4 explains the sorting action. FIG. 5 is a sectional view of the conventional example, and FIG. 6 is a perspective view of the conventional example. FIG. 7 is a plan view of a conventional sorting board. 1... Stone removal sorter, 2... Machine frame, 3... Supply hopper, 4... Opening, 5... Shutter plate, 6...
Operating rod, 7...Level sensor, 8...Fan case, 9゜10...Spindle, 11...Bearing, 12...
Swing arm, 13... Support shaft, 14.15... Bearing,
16... Swinging arm, 17... Support shaft, 18... Bearing, 19... Crank pulley, 20... Crank shaft, 21... Support bearing plate, 22... Mounting plate , 23・
...Crank arm, 24...Sorting board, 25...Intake port, 26...Fan shaft, 27...Fan, 28...
...Fan pulley, 29...Electric control, 30...Motor pulley, 31...V belt, 32...Blow hole, 33...Protrusion, 3711...Side wall, 35...
Mixed grain falling port, 36... Essence outlet, 37... Cross-feeding gutter, 7a... Cross-feeding gutter outlet, 38... Blower hole, 39
...Secondary sorting board, 40...Precious product return port, 41...
Stone extraction outlet, 42... Intermittent discharge device, 43... Rotating shaft,
44... Rotary valve, 45... Lever, 46... Solenoid, 47... Connecting fitting, 48... Stone detector,
4... Forced discharge gutter, 50... Forced discharge port, 51.
... Blower hole, 52 ... Connection port, 53 ... Opening/closing valve, 5
4...Axis, 55...Rotary solenoid, 56...
...Inspection door, 57...Stone discharge gutter, 58...Precious product discharge gutter, 59...Opening.

Claims (5)

[Claims] (1) A sorting board with a large number of protrusions and blowholes is placed at a gentle slope on top of a fan case that is supported in the machine frame so that it can vibrate freely, and the top and bottom ends of the slope are opened. In a de-stone sorting machine in which the lower end of the slope is formed as a fine product outlet and the upper end of the slope is formed as a mixed grain falling port, a large number of protrusions and jets are attached to one side of the sorting plate and communicated with the fan case. An elongated secondary sorting board with air holes is installed at a gentle slope, with the lower end of the slope serving as an outlet for returning refined products, and the upper end of the slope serving as an outlet for stone removal, with an intermittent at the stone outlet to allow stones to remain to a certain extent. A discharge device is provided, and the mixed grain falling port and this secondary sorting board are connected by a cross-feeding gutter, and a forced discharge gutter with an inclined lower end serving as a forced discharge port is provided along with the secondary sorting board. A discharging device for a stone removal sorter, characterized in that the secondary sorting board is provided with a gentle slope, and a communication port leading to a forced discharge gutter is provided near the top end of the slope of the secondary sorting board, and an on-off valve is provided in the communication port. (2) A large number of blowholes facing toward the forced discharge port are formed in the bottom of the forced discharge gutter, and the forced discharge gutter is communicated with the fan case.
Discharging device for the stone removal sorter described in section. (3) The above-mentioned intermittent discharge device comprises a rotary valve that shuts off the stone outlet, a solenoid that operates the rotary valve, and a stone detector provided near the stone outlet. 1
) or (2), the discharge device of the stone removal sorter. (4) A number of protrusions and blowholes facing the secondary sorting board are formed on the bottom of the horizontal gutter, and the horizontal gutter is communicated with the fan case. 1st (1st
A discharge device for a stone removal sorter according to any one of items ) to (3). (5) A rotary solenoid is connected to the rotating shaft of the on-off valve, and a grain presence/absence detector is provided at any point leading to the discharge part of the cross-feeding gutter, and the grain presence/absence detector detects the absence of grains. Claims (1) to (4) in which the grain presence/absence detector and the rotary solenoid are electrically connected so that the rotary solenoid is actuated by the detected signal to open the on-off valve. Discharging device of the stone removal sorter described.