JP4700027B2 - Gate section structure of stone extraction equipment - Google Patents

Description

  The present invention relates to a gate structure that discharges foreign substances such as stones separated from selected grains and residual rice to be collected in a stone extraction device for rice polishing pretreatment.

  As shown in Patent Document 1, the grain sorting unit of the stone extraction device is composed of a tilted perforated plate for vibration sorting, a vibration wind tunnel that vibrates the tilted perforated plate from below, and the like. The perforated plate is vibrated while receiving air blown from the wind tunnel, and the foreign matter is vibrated and transferred with a specific gravity difference, whereby the separated foreign matter is discharged from the stone extraction gate at the top of the slope, and the remaining rice formed on the side of the sloped perforated plate is recovered. The remaining rice on the inclined perforated plate can be recovered by opening a recovery gate that communicates with the passage.

These stone extraction gates and recovery gates are equipped with a stone extraction shutter plate that opens and closes each, a recovery shutter plate, and individual actuators, and are configured to be separable from the wind tunnel as a grain sorting unit, so that they can be moved during maintenance. The shutter plate and actuator of the gate part to which the wind dust and the like received from the grain sorting part are attached can be cleaned by removing the stone tunneling apparatus main body while leaving the wind tunnel part of the structure.
Japanese Patent Laid-Open No. 10-146567

  However, since the gate portion includes two shutter plates and respective driving portions within a limited narrow range and is configured close to the gate portion, a large burden is required in terms of manufacturing cost due to its complexity. Not only that, frequent maintenance for cleaning the wind dust collected under the vibration environment required complicated operation, and became an operational bottleneck as a component of unattended automatic rice milling system.

  The object of the present invention is not only to reduce the manufacturing cost with a simple configuration, but also to improve reliability and maintainability, as a component of an unmanned automatic system under severe conditions due to vibration of the grain sorting unit and wind dust. It is an object of the present invention to provide a gate structure of a stone removing device that can ensure compatibility.

The invention according to claim 1 is provided in any one of a grain sorting part formed by tilting the front lower and providing a stone gate at the rear, guide side walls standing on the left and right of the grain sorting part, and left and right guide side walls. A residual rice recovery passage that is adjacent and inclined in the same direction as the grain sorting section, a recovery gate that opens to a guide side wall that partitions between the grain sorting section and the residual rice recovery path, and a rotatable that covers the recovery gate A recovery shutter plate and a stone extraction shutter plate that slides in the left-right direction to open and close the stone extraction gate,
The recovery shutter plate is arranged facing the third operating position range of the stone extraction shutter plate,
The stone extraction shutter plate opens the stone extraction gate at the first operation position, closes the stone extraction gate at the second operation position, and further collects the shutter with the stone extraction gate closed at the third operation position. The collection gate is opened by rotating the plate .

According to a second aspect of the present invention, in the configuration of the first aspect, the second operation position is between the first operation position and the third operation position .

The gate portion structure of the stone removing device according to claim 1 is configured such that the stone removing gate is opened at the first position, closed at the second position, and recovered at the third position by the sliding operation of the stone removing shutter plate. Since the collection gate is opened by acting on the gate, the opening and closing operation of the two gates can be performed by the three-position sliding operation of the stone removing shutter plate. It can be configured simply . Therefore , not only a reduction in manufacturing cost but also an improvement in reliability and maintainability can ensure compatibility as a component of an unmanned automatic system under severe conditions due to vibration of the grain sorting portion and wind dust. .
In addition, the stone-extracted shutter plate is formed so that its sliding movement direction is the left-right direction (transverse direction) of the aircraft, and the recovery shutter plate is pivotally supported so that it can be opened to the outside in response to the sliding operation of the stone-extracting shutter plate. Thus, the recovery shutter plate is unfolded and the recovery gate is controlled to open and close by the sliding operation of the stoned shutter plate in the transverse direction of the aircraft. Therefore, the required slide stroke including the opening / closing operation of the recovery shutter plate can be ensured with a compact configuration without requiring an increase in the longitudinal dimension of the grain sorting portion.

In addition to the effect of the first aspect, the grain selection unit of the stone extraction device according to claim 2 has a second operation position between the first operation position and the third operation position. The shutter plate and recovery shutter plate can be opened and closed with a small slide stroke .

Embodiments specifically configured based on the above technical idea will be described below with reference to the drawings.
FIG. 1 is an internal perspective side view (a) and a front view (b) of a stone remover.
The stone remover 1 includes an input hopper 2 that receives the grain at the upper part of the machine body, a grain sorting unit 3 that sorts foreign matter in the grain, and a drive system 4.

  The grain sorting unit 3 includes a wind tunnel 6 having an inclined perforated plate 5 attached to the lower end position of the charging hopper 2 in an inclined posture, a rotary blade 7 that blows air to the wind tunnel 6, and the like. A stone extraction chute 8 for discharging grain-contaminated foreign matter from the rear of the machine body is provided at the rear of the machine body, and a remaining rice recovery passage by a recovery chute 9 for recovering residual grain from the inclined porous plate 5 is provided on the side of the inclined porous plate 5. The exit of the inclined perforated plate 5 is opened in front of the machine body together with the remaining rice collecting passage 9.

(Wind tunnel)
The wind tunnel 6 will be described in detail. As shown in a plan view (a) and a side view (b) of FIG. 2, the left and right guide side walls 11, 11 are extended to the air blowing port 6 a, and the left and right guide side walls 11, 11 is attached to the inclined perforated plate 5 over the entire width W, and a gate frame 12 having a stone-extracted gate 12g and the like formed on the inclined upper portion is provided.

  The inclined perforated plate 5 is a perforated plate that receives the sorting air from the rotary blades 7 and has projections and recesses for sending foreign substances such as stones upwardly in response to the vibration of the wind tunnel 6, and the upper end of the slope is directed toward the stone extraction gate 12g. A narrowing sorting passage is formed. Further, by providing slide guides for restricting the vertical movement by the guide rail 13 and the holding rail 13a on the inner surfaces of the left and right guide side walls 11, 11, the inclined perforated plate 5 is supported so as to be slidable in the longitudinal direction of the inclined surface. To do.

  A recovery chute 9 as a remaining rice recovery passage is disposed on the outer side of one of the left and right guide side walls 11, 11 of the wind tunnel 6 (right in the figure), and this recovery chute 9 is an inclined upper end of the inclined perforated plate 5. Step portions 9a and 9b are formed at intermediate positions so as to form a slope suitable for discharge from the collection gate 14g formed on the side of the plate and to ensure a discharge speed without being affected by the stay of the discharge end.

  As shown in the enlarged plan view (a) and side view (b) of FIG. 3, the inclined perforated plate 5 has left and right side plates 21 and 22 standing on both sides, and on the inclined upper side (right hand in the figure). The left and right top plates 21a and 22a are connected to each other and narrow toward the stone extraction gate 12g. The top plates 21a and 22a are fitted with pins 15 and 16 projecting from the gate frame 12 at the upper end of the slope. The matching positioning holes 21h and 22h are formed. Moreover, buckle type fixing tools 23 and 23 for fixing to the guide side wall 11 by one-touch operation are provided at the lower end portion of the inclined perforated plate 5.

  As shown in FIG. 4, a guide rail 13 provided on the left and right guide side walls 11 of the wind tunnel 6, as shown in FIG. The side plate 21 of the inclined perforated plate 5 is regulated up and down by 13 a and is supported by slide, and the opening end is positioned and fixed to the guide side wall 11 of the wind tunnel 6 by the buckle type fixture 23.

(Gate part)
As shown in FIG. 5, an enlarged plan view of the main part of the gate frame 12 of the gate portion opens a stone extraction gate 12g at the inclined upper end of the inclined perforated plate 5, and can be opened and closed by a sliding operation. In addition, a recovery shutter plate 14s is provided on the guide side wall 11 that partitions the inclined perforated plate 5 and the recovery chute 9 so that the recovery gate 14g is opened and can be opened and closed. Further, a shutter driving unit 31 that opens and closes both shutter plates 12s and 14s is provided below the stone-extracted shutter plate 12s.

The stone-extracted shutter plate 12s is supported so as to be slidable in the transverse direction of the machine body, and is engaged and connected to the shutter drive unit 31 by forming an elongated hole-like engagement portion 12r for driving the slide. The sliding movement range of the stone extraction shutter plate 12s includes first and second positions A and B that open and close the stone extraction gate 12g, and interferes with the recovery shutter plate 14s at a portion that is separated from the stone extraction gate 12g in the sliding operation. A possible action part 12a is formed, and the action part 12a acts as a slide lever 12t that can slide to the third position C where the action shutter 12s acts on the recovery shutter plate 14s to open the recovery gate 14g.

  As shown in FIGS. 6A and 6B, an enlarged plan view and a side view of the main part of the collection gate 14g, and an enlarged view taken along arrow F in FIG. 6B are shown in FIG. The upper end is supported in the recovery chute 9 so as to be able to roll over by the hinges 14h and 14h, and is arranged in a range where it can interfere with the stone-extracted shutter plate 12s. On the recovery shutter plate 14s, an arm portion 14a is bent in an L shape, and biasing mechanisms 14p and 14p by a spring with guide are interposed between the arm portion 14a and the top plate 9t of the recovery chute 9. Thus, the recovery gate 14g is elastically closed.

(Shutter drive)
As shown in a development view of the shutter drive unit 31 in FIG. 8, an eccentric pin 34 is provided on a rotation arm 33 supported by a geared motor 32 so as to be rotatable at a low speed. Three position sensors 35, 36, and 37 for position selection are attached by a sensor attachment frame 38 having a predetermined shape. The eccentric pin 34 engages with the engaging portion 12r so as to slide the stone-extracted shutter plate 12s.

  The rotary arm 33 has three position sensors 35, 36, 37 by limit switches or the like that can be detected by sensor action portions 33a, 33b at both ends thereof, and are arranged at three locations within a 180-degree rotation range. The positions of the three position sensors 35, 36, and 37 are arranged in accordance with the rotation positions corresponding to the slide operation positions A to C of the stone extraction shutter plate 12 s engaged with the eccentric pin 34.

  In this case, the sensor 36 corresponding to the second position B for closing the stone extraction gate 12g opens the stone extraction gate 12g as shown in the cross-sectional view taken along line S1-S2-S3 in FIG. In order to reliably detect the position at an intermediate portion between the first position A and the third position C where the recovery shutter plate 14s is opened, a plunger switch is used. Further, since the sensor 37 corresponding to the third position C is close to the second position B, the sensor 37 is arranged with an angular difference of 180 degrees so as to be detectable on the other end 33b side of the rotating arm 33.

  The opening and closing operation of the gates 12g and 14g by the shutter plate is performed by the geared motor 32 corresponding to the detection signals of the three position sensors 35, 36, and 37 as shown in FIG. 33 is positioned, and the stone extraction gate 12g is opened at the first position A, and the stone extraction gate 12g is closed at the second position B in accordance with the rotation control of the shutter driving unit 31, and the third position. At C, the collection gate 14g is opened.

The gate portion having the above configuration has the following effects.
A third operating position C is provided in the sliding range of the stone extraction shutter plate 12s, and the stone extraction gate 12g is closed while the stone extraction gate 12g acts on the recovery shutter plate 14s at the third operation position C. Since the gate 14g is configured to be opened, the two gates can be opened and closed by the sliding operation between the three positions A to C of the stone-extracted shutter plate 12s. The unit 31 can be configured simply. Therefore, not only a reduction in manufacturing cost but also an improvement in reliability and maintainability can ensure compatibility as a component of an unmanned automatic system under severe conditions due to vibration of the grain sorting portion and wind dust. .

  Further, the stone-extracted shutter plate 12s is formed so that its slide operation direction is in the transverse direction of the machine body, and the recovery shutter plate 14s is pivotally supported so that it can be laterally expanded by receiving the slide operation of the stone-extracted shutter plate 12s. Accordingly, the recovery shutter plate 14s is developed to the side by the sliding operation of the stone extraction shutter plate 12s in the transverse direction of the machine body, and the recovery gate 14g is controlled to open and close. Therefore, the required slide stroke including the opening / closing operation of the recovery shutter plate 14s can be ensured with a compact configuration without requiring an increase in the longitudinal dimension of the grain sorting portion.

It is an internal see-through | perspective side view (a) of a stoning machine, and its front view (b). It is the top view (a) and its side view (b) of a wind tunnel. It is an enlarged plan view (a) and its side view (b) of an inclined perforated plate. It is a principal part front view of a selection grain discharge opening. It is a principal part enlarged plan view of a gate unit. It is the principal part enlarged plan view (a) and the side view (b) of a collection gate part. It is F arrow enlarged view in FIG.6 (b). FIG. 3 is a configuration development view of a shutter driving unit. It is the S1-S2-S3 sectional view taken on the line in FIG. It is a corresponding | compatible chart of 3 position operation | movement of a gate unit.

DESCRIPTION OF SYMBOLS 1 Stone extraction machine 3 Grain sorting part 5 Inclined perforated plate 6 Wind tunnel 8 Stone extraction chute 9 Collection chute (remaining rice collection passage)
12 gate frame 12a action part 12g stone extraction gate 12r engagement part 12s stone extraction shutter plate
12t Slide lever 14g Recovery gate 14h Hinge 14s Recovery shutter plate 31 Shutter drive part 33 Rotating arm 33a, 33b Sensor action part 34 Eccentric pins 35, 36, 37 Position sensor A Stone extraction gate opening position B Stone extraction gate closing position C Recovery Gate open position

Claims (2)

A grain sorting section (5) having a low-tilt front and a stone extraction gate (12g) on the back;
Guide side walls (11, 11) standing on the left and right of the grain sorting section (5);
A residual rice recovery passageway (9) that is adjacent to one of the left and right guide side walls (11, 11) and inclined in the same direction as the grain sorting section (5);
A collection gate (14g) opened in the guide side wall (11) separating the grain sorting section (5) and the remaining rice collection passage (9);
A collection shutter plate (14s) that covers the collection gate (14g) and is pivotally supported so as to be opened outward;
A stone extraction shutter plate (12s) for sliding the first to third operation position ranges arranged in the left-right direction to open and close the stone extraction gate (12g);
The recovery shutter plate (14s) is disposed facing the third operating position range of the stone extraction shutter plate (12s),
The stone extraction shutter plate (12s) opens the stone extraction gate (12g) at the first operation position (A), closes the stone extraction gate (12g) at the second operation position (B), and The gate structure of the stone removing device, wherein the collection gate plate (14g) is opened by rotating the collection shutter plate (14s) while the stone removal gate (12g) is closed at the operation position (C) 3. . The gate portion of the stone removing device according to claim 1, wherein the second operation position (B) is between the first operation position (A) and the third operation position (C). Construction.

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