JP5454907B2 - Stone extraction sorter - Google Patents

Description

  The present invention relates to a stone extraction and sorting machine that selectively removes pebbles mixed in grains.

  Conventionally, as this kind of stone extraction sorter, what was indicated by patent documents 1 is known, for example. FIG. 6 is a side cross-sectional view of the stone extraction and sorting machine disclosed in Patent Document 1, in which a sorting case 117 having a porous sorting member 118 on the bottom surface is disposed in an inclined state in the machine frame 111. A blower 126 is disposed below, the sorting case 117 is swung, and the pebbles supplied into the sorting case 117 are sent from the blower 126 through the porous sorting member 118 and sent into the sorting case 117. In the sorting part on the porous sorting member 118, the grain containing the cereal is subjected to specific gravity sorting, and the sorted grain is taken out from the grain outlet 117b of the sorting case 117, and the sorted pebbles are collected in the pebbles collecting part of the sorting case 117 It is the composition which collects in 117c.

  In the machine frame 111, first and second support rollers 115 and 116 are disposed at a predetermined interval, and the lower surface of the sorting case 117 is inclined with respect to the bottom surface of the sorting case 117, and each support First and second inclined support surfaces 119 and 120 that are supported in contact with the rollers 115 and 116 are formed, and a reciprocating motion is given to the sorting case 117 between the machine frame 111 and the sorting case 117 along the tilt direction. And the inclination angle of each inclined support surface 119, 120 with respect to the bottom surface of the sorting case 117 is such that the first inclined support surface 119 located on the grain outlet 117b side is closer to the pebbles collection part 117c side. It is formed to be larger than the second inclined support surface 120 located.

  With the above configuration, when the sorting case 117 is urged forward along the inclination direction by the compression spring 124, the contact plate 121 is pressed against the eccentric ring 122, and when the eccentric ring 122 is rotated, the sorting case 117 On the other hand, a backward movement force is applied along the tilt direction, and a swinging motion is performed. At the time of stone extraction, the pebbles sorted by the sorting section of the sorting case 117 are returned to the grain outlet 117b and mixed again into the grains, or the sorted grains are fed to the pebbles collecting section 117c. It is possible to prevent the particles from being returned and mixed into the pebbles, and there is an effect that the selection of the grains and the pebbles can be performed with high accuracy in a short time.

  However, in the support structure of the sorting case 117 of the conventional stone extraction sorter described above, the contact plate 121 is eccentrically moved by urging the short side of the rectangular sorting case 117 by a single compression spring 124. It was pressed against 122 and applied to a relatively small sorting case 117. That is, to improve the processing capacity of sorting, it is conceivable to increase the area of the sorting case 117. In this case, however, the weight of the sorting case 117 becomes heavy, and the short side of the sorting case 117 is attached by the compression spring 124. In the above-described configuration, the pressing force against the eccentric ring 122 becomes weak, and there arises a problem that the swinging motion becomes insufficient. Then, due to the weight of the sorting case 117, rolling occurs during the swinging motion, and there is a problem that adversely affects the sorting of grains and pebbles.

Japanese Patent No. 3310921

  In view of the above problems, it is a technical object of the present invention to provide a stone extraction machine that does not deteriorate the accuracy of selecting grains and pebbles even when the area of the selection case is increased. .

  In order to solve the above problems, the invention according to claim 1 is characterized in that a sorting case equipped with a perforated sorting plate is disposed in an inclined state in a machine frame, and a blower is disposed below the sorting case, and the sorting case is provided. In the stone extraction sorter formed so as to sort the grains supplied on the porous sorting plate by sending air from the blower to the porous sorting plate, the sorting case includes the sorting case. An inclined lower roller and an inclined upper roller are disposed at a predetermined interval in the long side direction of the machine, while the machine frame is inclined with respect to the bottom surface of the sorting case, and the inclined lower roller and the inclined upper roller A drive mechanism for forming a tilted lower support plate and a tilted upper support plate for contacting and supporting the screen, and for providing a swinging motion along the tilt direction with respect to the sorting case between the machine frame and the sorting case Further, the tilted lower support plate and the tilted upper support plate are each provided with a roll prevention roller that prevents the roll from coming into contact with the left and right rising walls in the long side direction of the sorting case. Measures were taken.

  The invention according to claim 2 is characterized in that the drive mechanism includes an eccentric wheel rotatably supported in the machine frame, a contact plate projecting from the sorting case so as to contact the eccentric wheel, and the contact plate. A tension spring disposed between the machine frame that is pressed against the eccentric ring and the sorting case is provided.

  The invention according to claim 3 is characterized in that the perforated sorting plate and the sorting case are mounted by hand-tightened fasteners.

The stone removal sorter of the present invention has a sorting case equipped with a perforated sorting plate disposed in an inclined state in the machine frame, and a blower is disposed below the sorting case to swing the sorting case. In the stone extraction sorter formed so as to sort the grains supplied on the porous sorting plate by sending air from the blower to the porous sorting plate,
The sorting case is provided with an inclined lower roller and an inclined upper roller at a predetermined interval in the long side direction of the sorting case, while the machine frame is inclined with respect to the bottom surface of the sorting case, and An inclined lower support plate and an inclined upper support plate for contacting and supporting the inclined lower roller and the inclined upper roller are formed, and swinging motion is performed in the inclination direction with respect to the sorting case between the machine frame and the sorting case. Further, the tilting lower support plate and the tilted upper support plate are provided with a roll prevention roller that prevents the roll from coming into contact with the left and right rising walls in the long side direction of the sorting case. Since they are each provided, if grains containing foreign objects such as pebbles are supplied, foreign objects such as pebbles with heavy specific gravity will not rise, but will be swung up by a rocking motion, and the pebbles will move to the tilt information side. Ri can be separated. At this time, the roll prevention roller disposed on the inner wall of the machine frame is pressed in contact with the rising wall of the sorting case that supports the porous sorting plate, thereby preventing the occurrence of lateral rolling with respect to the sorting case. In order to improve the processing capacity of the sorting, even if the area of the perforated sorting plate is increased, the rolling can be prevented during the rocking motion, and the sorting accuracy between the grains and the pebbles is not deteriorated.

  The drive mechanism includes an eccentric wheel that is rotatably supported in the machine frame, a contact plate that projects from the sorting case so as to contact the eccentric wheel, and the pressure plate that presses the contact plate against the eccentric wheel. Since the tension spring disposed between the machine frame and the sorting case is provided, a pair of tilted lower rollers of the sorting case are contacted and supported on the tilted lower support plate on the machine frame side, and the sorting case A tension spring between the machine frame and the sorting case is installed so that the pair of inclined upper rollers are in contact with and supported on the inclined upper support plate on the machine frame side, and the contact plate on the lower surface of the sorting case is in contact with the eccentric ring. Therefore, the detachment between the machine frame and the sorting case is facilitated by removing the tension spring or attaching the tension spring. As a result, if the sorting case is removed from the machine frame, cleaning of the blades of the blower to which the soot has adhered, maintenance of the worn eccentric wheel, and the like can be easily performed.

  Further, when the perforated sorting plate and the sorting case are attached by a hand-tightened fastener, after the sorting operation is finished, the hand-tightened fastener is loosened by hand to remove the perforated sorting plate from the sorting case and clean it. It is possible to remove the crushed rice or pebbles clogged in the small holes by jetting compressed air from the air nozzle for cleaning. As a result, the porous sorting plate can be easily removed from the sorting case without the need for a tool, and maintenance is facilitated.

It is a schematic perspective view which shows the whole stone extraction sorter which concerns on embodiment of this invention. It is the schematic longitudinal cross-sectional view which fractured | ruptured the AA line of FIG. FIG. 3 is a cross-sectional view seen from the B direction with a part broken along line BB in FIG. 2. FIG. 3 is a cross-sectional view seen from the C direction with a part broken along the line CC in FIG. 2. It is a schematic longitudinal cross-sectional view at the time of mounting | wearing a selection case with a machine frame. It is a sectional side view of the conventional stone extraction sorter.

  A mode for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view of a stone extraction and sorting machine according to an embodiment of the present invention, and FIG. 2 is a schematic longitudinal sectional view when the line AA in FIG. 1 is broken.

As shown in FIG. 1 and FIG. 2, the stone extraction and sorting machine 1 includes a box-like machine frame 2, and an opening 4 through which grains such as rice are put on the porous sorting plate 3 at the upper part of the machine frame 2. And a refined product discharge basket 5 for projecting grains from which pebbles and the like have been separated protrudes from the front wall 2a of the machine frame 2 (the left front direction in FIG. 1, the left side in FIG. 2). On the other hand, a debris discharge rod 6 for discharging separated pebbles and the like protrudes from a wall 2b on the rear surface (right depth direction in FIG. 1, right side in FIG. 2) of the machine casing 2.
The perforated sorting plate 3 has a large number of small holes 3a for receiving the sorting wind, and has a concavo-convex shape so that foreign matters such as pebbles are sent to the upper side of the slope, and the plate surface is surrounded by the rising walls 3b and 3c. The And the upright walls 3c and 3c on the inclined upper end side have a shape narrowed toward the debris discharge gutter 5 (see FIG. 1).

  The machine casing 2 is provided with a sorting case 7 that supports the porous sorting plate 3 in an inclined manner. That is, the porous sorting plate 3 and the sorting case 7 are configured to be removable, and the porous sorting plate 3 can be cleaned after the grain sorting operation is completed. For example, as shown in FIG. 1, the sorting case 7 and the perforated sorting plate 3 are screwed together using hand-tightened fasteners such as butterfly bolts 8. Thereby, the porous sorting plate 3 can be easily detached from the sorting case 7 without using a tool.

  Further, a pair of inclined lower support plates 9a and 9b are fixed to the inner frame of the machine frame 2 on the side of the precision product discharge basket 5 to support the sorting case 7 (see FIGS. 2 and 3). Inclined upper support plates 10a and 10b are fixed to the inner wall of the machine frame 2 on the side of the stone waste discharge basket 6 (see FIGS. 2 and 4). If the inclined lower support plates 9a and 9b and the inclined upper support plates 10a and 10b are at different heights (for example, the inclined lower support plates 9a and 9b are lower and the inclined upper support plates 10a and 10b are higher). ), The tilting support of the sorting case 7 and the perforated sorting plate 10 with respect to the machine frame 2 becomes possible. The inclined upper support plates 10a and 10b may be fixed to the left and right side inner walls of the machine frame 2, respectively. However, as shown in FIG. 4, the inclined upper support plates 10a and 10b are bridged by the beam portion 10c. If integrated, the strength of the side wall of the machine casing 2 can be improved.

On the other hand, in the sorting case 7, a pair of inclined lower rollers 11a and 11b and a pair of inclined upper rollers 12a and 12b, which are pivotally supported by the support shafts 23a and 23b with respect to the wall surfaces of the rising walls 7a and 7b, respectively rotate. It is provided at a predetermined interval as possible. The inclined lower roller 11a is in contact with and supported on the inclined lower support plate 9a on the machine frame 2 side, and the inclined lower roller 11b is in contact with and supported on the inclined lower support plate 9b on the machine frame 2 side. 12a contacts and supports the inclined upper support plate 10a on the machine frame 2 side, and the inclined upper roller 12b supports and supports the inclined upper support plate 10b on the machine frame 2 side. As a result, when the sorting case 7 is inserted into the machine casing 2, the sorting case 7 is supported in a state of being inclined forward and downward (see FIG. 5).
Furthermore, as shown in FIG. 2, a drive mechanism 13 is provided between the machine casing 2 and the sorting case 7 for reciprocating the sorting case 7 along the inclination direction. That is, the rotary shaft 14 is horizontally mounted on the machine frame 2 so as to be rotatable, and an eccentric wheel 15 is attached to the rotary shaft 14 so that the eccentric case 15 can be contacted with the lower surface of the sorting case 7 as a contact member. The contact plate 16 is projected. When the tension spring 17 is disposed between the machine frame 2 and the sorting case 7, the contact plate 16 is pressed against the eccentric ring 15, and the sorting case 7 is disposed in an inclined manner without the contact plate 16 and the eccentric ring being separated from each other. be able to.

  As shown in FIGS. 2 and 5, a blower 18 is disposed in the machine frame 2 so as to blow air from below the sorting case 7 and the perforated sorting plate 3. The blower 18 includes a fan case 19 and a fan 20 that is rotatably supported in the fan case 19.

  Next, the roll prevention mechanism which is a main part of the present invention will be described. As shown in FIGS. 2, 3 and 4, the inclined lower support plates 9a and 9b and the inclined upper support plates 10a and 10b have a short side direction perpendicular to the long side direction of the sorting case 7 (see FIG. 1). Roll prevention rollers 21a, 21b, 22a, and 22b are provided to prevent shaking in the direction of arrow y-y). That is, the pair of inclined lower support plates 9a and 9b in the machine frame 2 are supported by the support shafts 25a and 25b with respect to the plate surfaces, and the sorting case 7 is raised in the long side direction. A pair of roll-preventing rollers 21a and 21b sandwiching the walls 7a and 7b are rotatably provided (see FIG. 4). Similarly, the pair of inclined upper support plates 10a and 10b in the machine frame 2 are supported by the support shafts 26a and 26b with respect to the plate surfaces, and the rising wall in the long side direction of the sorting case 7 is used. A pair of roll prevention rollers 22a and 22b sandwiching 7a and 7b is rotatably provided (see FIG. 5).

  According to the roll prevention rollers 21a and 21b and the roll prevention rollers 22a and 22b having the above-described configuration, the vibration direction when the drive mechanism 13 for reciprocating movement along the inclination direction is started and stopped is stable. Even when it is not, the original linear vibration direction (arrow XX direction in FIG. 1) is oriented, and there is an effect of preventing the lateral rolling of the sorting case 7 from occurring. Thereby, even if the area of the perforated sorting plate 3 is increased in order to improve the sorting processing capability, the rolling is prevented during the swinging motion, and the sorting accuracy between the grains and the pebbles is not deteriorated. In addition, it is necessary to manufacture with extremely tight dimensional accuracy of the gap between the rising walls 7a and 7b in the long side direction of the sorting case 7 and the machine frame 2 by the roll preventing rollers 21a and 21b and the roll preventing rollers 22a and 22b. No, the sorting case 7 can be easily processed.

  A drive shaft 27 connected from a motor is disposed in the machine frame 2, and a drive pulley 28 is attached to the drive shaft 27, while a driven pulley 31 is attached to the rotary shaft 14 with the eccentric wheel 15 attached thereto. It has been. A tension pulley 29 is disposed in the machine casing 2, and a fan pulley 30 is attached to the end of the rotating shaft of the fan 20. A belt 32 is wound between the drive pulley 28, the driven pulley 31, the tension pulley 29 and the driven pulley 30, and the fan 20 and the rotary shaft 14 are rotated by the rotation of the drive shaft 27. While the wind is sent through the small holes 3a of the perforated sorting plate 3, the sorting case 7 is reciprocally swung in the oblique direction (the xx direction in FIG. 1) by the eccentric ring 15.

  Grains containing pebbles supplied on the perforated sorting plate 3 are sorted by specific gravity by swinging the sorting case 7 and blowing from the blower 18. The selected grain is taken out from the refined product discharge basket 5 below the front end of the perforated sorting plate 3, and the sorted pebbles are collected by the pebble collecting unit 33 above the rear end of the perforated sorting plate 3.

  The pebbles collection part 33 is formed in the vicinity of the rising walls 3c, 3c on the upper side of the inclination of the porous sorting plate 3, and an opening 34 for discharging stones is opened at the upper end of the inclination of the porous sorting board 3. The opening 34 is provided with a lid-shaped stone discharge valve 35 for closing the opening, and the opening 34 is always closed by a spring (not shown) or the like. Further, if the operation lever 36 for opening and closing the stone discharge valve 35 is turned upward by hand, the opening 34 is opened, and the pebbles are taken out through the stone waste discharge rod 6.

Next, the foreign substance removal operation of the stone extraction and sorting machine of the present invention will be described. Grains mixed with foreign matter such as pebbles are introduced from the opening 4 at the top of the machine frame 2 and fall onto the swinging porous sorting plate 3. The fallen grains and the like pass through the small holes 3 a of the perforated sorting plate 3, and only the light grains of specific gravity are lifted by the airflow of the sorting wind blown upward. The foreign matter such as pebbles having a high specific gravity does not float up and is swung up by the swinging motion and collected in the vicinity of the pebbles collection unit 33. In this case, the roll prevention rollers 21a and 21b and the roll prevention rollers 22a and 22b arranged on the inner wall of the machine frame 2 are in contact with the rising walls 7a and 7b of the sorting case 7 that supports the porous sorting plate 3 in an inclined manner. By being pressed, it is possible to prevent the lateral rolling with respect to the sorting case 7 from occurring. Thereby, even if the area of the perforated sorting plate 3 is increased in order to improve the sorting processing capability, the rolling is prevented during the swinging motion, and the sorting accuracy between the grains and the pebbles is not deteriorated.
The grains that have flowed down to the fine product discharge basket 5 side are taken out of the machine as grains that have been separated and sorted out of foreign matters such as pebbles, while foreign matters such as pebbles that have accumulated in the vicinity of the pebbles collection unit 33 are removed from the operation lever 36. Can be taken out of the machine by pivoting upward by hand and opening the stone discharge valve 35.

  After the sorting operation of the stone extraction sorter is completed, the hand-tightened butterfly bolts 8 are loosened by hand, the porous sorting plate 3 is removed from the sorting case 7, and the compressed air from the cleaning air nozzle is jetted to The crushed rice or pebbles clogged in the hole 3a may be removed and cleaned. Thereby, the perforated sorting plate 3 can be easily removed from the sorting case 7 without using a tool, and maintenance can be easily performed.

  Further, the pair of inclined lower rollers 11a, 11b of the sorting case 7 are contacted and supported on the inclined lower support plates 9a, 9b on the machine frame 2 side, and the pair of inclined upper rollers 12a, 12b of the sorting case 7 are machined. A tension spring 17 between the machine frame 2 and the sorting case 7 so as to contact and support on the inclined upper support plates 10a and 10b on the frame 2 side, and to bring the contact plate 16 on the lower surface of the sorting case 7 into contact with the eccentric wheel 15. Since the tension spring 17 is removed or the tension spring 17 is attached, the machine frame 2 and the sorting case 7 can be easily detached (see FIG. 5). As a result, if the sorting case 7 is removed from the machine frame 2, it becomes possible to easily clean the blades of the blower to which the soot adheres and to maintain the worn eccentric wheel 15.

DESCRIPTION OF SYMBOLS 1 Stone extraction machine 2 Machine frame 3 Porous sorting board 3a Small hole 4 Opening part 5 Fine product discharge basket 6 Stone waste discharge basket 7 Sorting case 8 Butterfly bolt 9a Inclined lower support plate 9b Inclined lower support plate 10a Inclined upper support plate 10b Inclined Upper support plate 10c Beam 11a Inclined lower roller 11b Inclined lower roller 12a Inclined upper roller 12b Inclined upper roller 13 Drive mechanism 14 Rotating shaft 15 Eccentric wheel 16 Contact plate 17 Tension spring 18 Blower 19 Fan case 20 Fan 21a Roll prevention roller 21b Roll prevention roller 22a Roll prevention roller 22b Roll prevention roller 23a Support shaft 23b Support shaft 24a Support shaft 24b Support shaft 25a Support shaft 25b Support shaft 26a Support shaft 26b Support shaft 27 Drive shaft 28 Drive pulley 29 Tension pulley 30 Fan pulley 31 Driven pulley 32 Belt 33 Pebble recovery part 34 Opening part 35 Stone discharge valve 36 Lever

Claims (3)

A sorting case equipped with a perforated sorting plate is disposed in an inclined state in the machine frame, and a blower is disposed below the sorting case to swing the sorting case, and air is blown from the blower to the perforated sorting plate. In the stone extraction sorter formed to sort the grains supplied on the perforated sorting plate by sending
The sorting case is provided with an inclined lower roller and an inclined upper roller at a predetermined interval in the long side direction of the sorting case, while the machine frame is inclined with respect to the bottom surface of the sorting case, and An inclined lower support plate and an inclined upper support plate for contacting and supporting the inclined lower roller and the inclined upper roller are formed, and swinging motion is performed in the inclination direction with respect to the sorting case between the machine frame and the sorting case. Further, the tilting lower support plate and the tilted upper support plate are provided with a roll prevention roller that prevents the roll from coming into contact with the left and right rising walls in the long side direction of the sorting case. A stone punching machine characterized by each.   The drive mechanism includes an eccentric wheel rotatably supported in the machine frame, a contact plate protruding from the sorting case so as to come into contact with the eccentric wheel, and a pressure plate for pressing the contact plate against the eccentric wheel. The stone extraction and sorting machine according to claim 1, further comprising a tension spring disposed between a machine frame and the sorting case.   The stone punching and sorting machine according to claim 1 or 2, wherein the perforated sorting plate and the sorting case are mounted by hand-fastened fasteners.

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