Grain Flow Sorting Machine

Abstract

To provide a flow-down sorter in which a sorting net can be easily attached or detached, and therefore, a cleaning work for the sorting net can be performed.SOLUTION: A first sorting net 3, which sorts a grain M1 depending on whether or not the grain passes through, is attached in an upper case 2. A net take-out port 24 is formed in a side face of the upper case 2, and the first sorting net 3 is detached from the upper case 2 by taking out the first sorting net 3 via the net take-out port 24, or is attached to the upper case 2 by pushing the first sorting net 3 into the port. A cover plate 4, which blocks the whole area of the net take-out port 24 in the state the first sorting net 3 is pushed in the net take-out port 24, is fixed to the side face of the first sorting net 3.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a downstream grain sorting machine that sorts grains based on whether or not they pass through a sorting net. [Background technology]

[0002] Conventionally, a flow-down type sorting machine that separates polished grains from foreign matter and the like has been generally known. For example, the flow-down type sorting machine disclosed in Patent Document 1 has a main body case that swings horizontally, and a hopper that supplies polished grains to the inside of the main body case is provided at the top of the main body case. Inside the main body case, an upper sorting net, a middle sorting net, and a lower sorting net are arranged in order from top to bottom. When grains are supplied to the upper sorting net while the main body case is swinging, the upper sorting net separates grains from bran balls and other foreign matter by passing through the mesh while the bran balls and other foreign matter do not pass through the mesh, the middle sorting net separates broken grains from grains by passing through the mesh while the grains do not pass through the mesh, and the lower sorting net separates bran from broken grains by passing through the mesh while the broken grains do not pass through the mesh. A mesh outlet for removing the sorting mesh during cleaning is provided on the side of the main case, and the entire area of ​​the mesh outlet is covered with a cover plate to prevent bran and the like from leaking out from the mesh outlet during sorting work. When cleaning the sorting mesh, the cover plate is removed from the main case to open it, and the sorting mesh is pulled out from the opened mesh outlet and removed from the main case. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 2524650 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in Patent Document 1, when removing the sorting net from the net outlet, it is necessary to remove the cover plate that covers the entire area of ​​the net outlet, and then pull the sorting net out of the net outlet and remove it from the main body case, which causes a problem that cleaning work is troublesome.In addition, when removing the sorting net from the net outlet, it is necessary to reach into the net outlet and grab the sorting net with your hand to pull it out, which causes a problem that it is difficult to remove the sorting net.

[0005] The present invention has been made in consideration of the above points, and its object is to enable the sorting net to be easily attached or removed from a flow-down type sorting machine, thereby making it easy to clean the sorting net. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention is characterized in that the screening screen and the cover plate are integrated together.

[0007] Specifically, the target is a flow-down type grain sorting machine that has a main case with a sorting net attached inside that sorts grains based on whether they pass through the mesh, and is configured so that the sorting net can be pulled out and removed from the main case through a net outlet formed in the main case, or the sorting net can be pushed into the main case and attached thereto, and the following measures have been taken.

[0008] That is, in the first invention, the net outlet is provided on a side surface of the main body case, and a cover plate is fixed to a side surface of the sorting net so as to cover the entire area of ​​the net outlet when the sorting net is pushed into the main body case from the net outlet. The cover plate is provided with a handle that is held by an operator when pulling out or pushing in the sorting net. The handle is provided in a pair at a predetermined interval in the longitudinal direction of the cover plate, and includes a first frame portion extending in a direction intersecting the longitudinal direction of the cover plate, and a second frame portion provided at a predetermined interval from the cover plate and bridging the first frame portions. It is characterized by the fact that

[0009] No. 2 In the present invention, 1In the invention, a pair of extending support portions are provided on both longitudinal sides of the first frame portion, which extend outward from the edge of the cover plate and rotatably support a fastening member, and the cover plate is configured to be fixed to the main body case by screwing and connecting the fastening member to the side of the main body case.

[0010] No. 3 In the present invention, 1 or No. 2nd shot In the present invention, the handle is fixed to the cover plate by welding.

[0011] In a fourth invention, in a downstream grain sorting machine that has a main body case with a sorting net attached inside, which sorts grains based on whether they pass through the mesh, and is configured so that the sorting net can be pulled out and removed from the main body case through a net outlet formed in the main body case, or the sorting net can be pushed into the main body case and attached, the net outlet is provided on a side of the main body case, and a cover plate is fixed to the side of the sorting net, which covers the entire area of ​​the net outlet when the sorting net is pushed into the main body case from the net outlet, and a handle is attached to the cover plate to be held by an operator when pulling out or pushing in the sorting net, and the handle is fixed to the cover plate by welding. Effect of the Invention

[0012] In the first invention, when the cover plate is pulled away from the main case by hand, the sorting net is pulled out from the main case through the net outlet together with the cover plate, whereas when the cover plate is pushed toward the main case by hand, the sorting net is pushed into the main case through the net outlet together with the cover plate. In this way, by performing the detachment and attachment operations of the cover plate to the main case, the sorting net can be pulled out and pushed into the main case at the same time, so that the sorting net can be easily attached to or removed from the main case. Also, when the cover plate is pulled away from the main case, the sorting net is pulled out from the main case through the net outlet together with the cover plate, so that the worker does not need to reach into the net outlet to grab and pull out the sorting net. Therefore, the sorting net can be efficiently removed and cleaning work can be performed. In the first invention, when cleaning the sorting net, the worker can grasp the handle and pull the sorting net out of the main case or push it into the main case. Therefore, the worker can hold the sorting net in a stable state and can safely clean the sorting net. In addition, the worker can grasp the handle and carry the sorting net removed from the main case, so the sorting net can be easily moved. In the first invention, compared to a simple plate-like cover plate, the pair of first frames provided at a predetermined interval increases the section modulus around each first frame part in the cover plate, so that the rigidity around each first frame part in the cover plate is increased, and it is possible to prevent the cover plate from deforming and generating a gap between the cover plate and the main case. In addition, the handle is configured by assembling three parts with a relatively simple shape, so that the manufacturing cost and parts cost can be kept low.

[0013] No. 2 In the invention, since there is no part of the cover plate that is fastened to the main case by a fastening member, the area where the cover plate overlaps with the main case can be narrowed. This improves material yield and allows for a low-cost sorting machine.

[0014] No. 3 and 4In the invention, since no hole for fixing the handle is formed in the cover plate, it is possible to prevent bran and the like from leaking out from inside the main case through the hole formed for fixing the handle to the cover plate. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a front view of a downstream sorting machine according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a side view of a flow-down type sorting machine according to an embodiment of the present invention. [Diagram 3] FIG. 3 is a view taken along the arrow III in FIG. 2. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. [Diagram 5] FIG. 4 is a view equivalent to FIG. 3 and shows the state in which the sorting net has been removed from the sorting machine. [Figure 6] FIG. 6 is an enlarged view of a portion VI in FIG. 5. [Figure 7] FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. [Figure 8] FIG. 3 is a schematic cross-sectional view taken along line VIII-VIII in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, in which: It should be noted that the following description of the preferred embodiments is merely exemplary in nature.

[0017] 1 and 2 show a flow-down sorting machine 1 for grain M1 according to an embodiment of the present invention. The sorting machine 1 separates polished grain M1 from foreign matter and the like, and is composed of an upstream sorting section 1A that sorts the grain M1 from bran balls F1 and other foreign matter F2 while causing the grain M1 to flow diagonally downward, and a downstream sorting section 1B that is provided below the upstream sorting section 1A and separates the grain M1 from broken grains F3, bran, and other powder F4.

[0018] 3 and 4, the upstream sorting section 1A is provided with an upper case 2 (main case) having a sorting space S1 therein, which is shaped to extend obliquely upward from the front side to the rear side of the sorting machine 1, and the upper case 2 is substantially triangular in side view and is supported from below by a pair of support frames 2a provided at a predetermined interval in the width direction of the upper case 2 (the horizontal direction intersecting with the direction in which the grains M1 flow obliquely downward). Note that, for convenience, the upper case 2 is shown without its top lid in FIG. 3.

[0019] A grain feeding section 21 having an approximately box shape with an inlet 21a at its upper end for feeding the raw grain M1 is provided at the upper upstream portion of the upper case 2, and on both sides of the inlet 21a in the grain feeding section 21, there are duct connection sections 21b for connecting a duct (not shown) that draws in air from inside the upper case 2 to prevent condensation.

[0020] As shown in Figure 4, inside the grain feeding section 21, two guide plates 21c extending diagonally downward are provided alternately from the top on the front and back sides of the upper case 2, and each guide plate 21c allows the grain M1 fed into the feed opening 21a to fall in a serpentine manner inside the upper case 2 and move to the sorting space S1.

[0021] A chute section 22 extending diagonally downward toward the front side of the sorting machine 1 is disposed at the top of the sorting space S1, and the chute section 22 is configured to guide the grain M1 that has passed through the grain feeding section 21 to the downstream side of the sorting space S1.

[0022] A resistance plate 23 is provided above the downstream side of the chute section 22 and is rotatable around a rotation axis extending horizontally and intersecting the chute section 22. The resistance plate 23 is configured to change its position in blocking the passage section 22a of the chute section 22 by rotating around the rotation axis.

[0023] A weight 23a is detachably attached to the back side of the resistance plate 23 (the downstream side in the direction in which the grain M1 flows) to apply a force to rotate the resistance plate 23 to the side that blocks the passage portion 22a. By changing the weight of the weight 23a, the attitude of the resistance plate 23 blocking the passage portion 22a changes, and the amount of grain M1 passing through the passage portion 22a changes.

[0024] A net outlet 24 having a generally band-like shape extending obliquely downward toward the downstream side of the upper case 2 is formed in the middle of one side surface of the upper case 2 .

[0025] In the sorting space S1, there are arranged an upper slide rail 25a having an inverted U-shaped cross section that extends in a straight line in the width direction of the upper case 2 from a position below the upstream edge of the net outlet 24, and a lower slide rail 25b having an approximately L-shaped cross section that extends in a straight line in the width direction of the upper case 2 from a position below the downstream edge of the net outlet 24.

[0026] In addition, in the sorting space S1, a pair of mounting frames 26 each having an L-shaped cross section extending linearly in the width direction of the upper case 2 from a position above the middle part of the net outlet 24 are provided at a predetermined distance in the longitudinal direction of the net outlet 24.

[0027] The upper edge of a flexible resin sheet 27 having a rectangular shape when viewed from above is attached to each mounting frame 26, and the resin sheet 27 hangs down so as to cover from above the area corresponding to the mesh outlet 24 in the sorting space S1.

[0028] A first guide tube portion 28 is formed in the lower center of the upper case 2 and has a shape that gradually reduces in diameter as it extends downward.

[0029] Further, a first discharge tube portion 29 is formed in the lower downstream portion of the upper case 2 and has a shape that gradually reduces in diameter as it extends downward.

[0030] A first sorting net 3 having a substantially rectangular plate shape is disposed in a region of the sorting space S1 corresponding to the net outlet 24.

[0031] As shown in Figure 6, the first sorting net 3 has a rectangular main frame 31 which extends along the longitudinal direction of the net outlet 24 and includes a pair of side frames 31a arranged side by side at a predetermined interval in the width direction of the upper case 2, an upper frame 31b bridging the upstream ends of the two side frames 31a, and a lower frame 31c bridging the downstream ends of the two side frames 31a.

[0032] An adjustment frame 32 is disposed on the inside of the main frame 31 near the upper frame 31b, extending along the upper frame 31b and bridging the two side frames 31a.

[0033] A large number of metal wires 33 are wound between the adjustment frame 32 and the lower frame 31c, and the tension state of each metal wire 33 can be changed by moving the adjustment frame 32 toward the upper frame 31b or the lower frame 31c.

[0034] The metal wires 33 are arranged in the width direction of the upper case 2 with gaps large enough to allow the grains M1 to pass through but not the bran balls F1 or foreign objects F2. The first sorting net 3 allows the grains M1 guided by the chute section 22 and falling onto the first sorting net 3 to pass between the metal wires 33, thereby separating them from the bran balls F1 and foreign objects F2 that do not pass between the metal wires 33.

[0035] That is, the first sorting net 3 is configured to sort the grains M1 based on whether or not the grains M1 pass through gaps between the metal wires 33.

[0036] When the grains M1 are sorted in the first sorting net 3, each resin sheet 27 prevents the grains M1 falling from the chute section 22 to the first sorting net 3 from bouncing back without passing through the first sorting net 3 and scattering inside the upper case 2.

[0037] The grains M1 that have passed through the first sorting net 3 are guided by the first guide tube portion 28 to the downstream sorting section 1B.

[0038] On the other hand, bran balls F1 and foreign matter F2 that do not pass through the first sorting net 3 roll along the upper surface of the first sorting net 3, then drop toward the first discharge tube portion 29 and are guided by the first discharge tube portion 29 to be discharged outside the upper case 2.

[0039] The lower frame 31c of the first sorting net 3 has a slider portion 31d which has an approximately L-shaped cross-section corresponding to the cross-sectional shape of the lower slide rail 25b and extends along the extension direction of the lower frame 31c, and the slider portion 31d is capable of being fitted into the lower slide rail 25b from above.

[0040] On the other hand, the upper frame 31b is placed on the upper surface of the upper slide rail 25a with the slider portion 31d fitted into the lower slide rail 25b.

[0041] The first sorting net 3 can be pulled out through the net outlet 24 and removed from the upper case 2, or the first sorting net 3 can be pushed in and attached to the upper case 2, as shown in Figure 5, by sliding the upper frame 31b and the lower frame 31c along the upper slide rail 25a and the lower slide rail 25b.

[0042] A roughly band-shaped cover plate 4 extending along one of the side frames 31a of the first sorting net 3 is fixed to the side frame 31a, and the cover plate 4 is configured to cover the entire area of ​​the net outlet 24 when the first sorting net 3 is pushed into the net outlet 24.

[0043] The upper edge 4a of the first sorting net 3 on the cover plate 4 is folded back toward the surface of the cover plate 4 in an L-shaped cross section over the entire longitudinal direction of the cover plate 4, while the lower edge 4b ​​of the first sorting net 3 on the cover plate 4 is folded back toward the surface of the cover plate 4 in an L-shaped cross section except for the portions corresponding to the upstream and downstream sides of the upper case 2.

[0044] A handle 5 is attached to the surface of the cover plate 4 (the surface opposite to the surface to which the first sorting net 3 is fixed) to be held by an operator when pulling out or pushing in the first sorting net 3.

[0045] The handle 5 includes a first frame portion 51 that extends over the entire surface of the cover plate 4 in a direction intersecting the longitudinal direction and has a generally hat-shaped cross section.

[0046] The first frame portions 51 are provided in pair at a predetermined interval in the longitudinal direction of the cover plate 4, and are each fixed to the surface of the cover plate 4 by welding.

[0047] In addition, at a position spaced a predetermined distance from the surface of the cover plate 4, a second frame portion 52 is provided which has a U-shaped cross section that opens to the opposite side of the surface of the cover plate 4 and extends linearly in the longitudinal direction of the cover plate 4.

[0048] The second frame portion 52 bridges the middle portions of both first frame portions 51 and is fixed to the first frame portions 51 by welding.

[0049] As shown in Figure 7, on both longitudinal sides of each first frame portion 51, a pair of approximately plate-shaped extending support portions 51a are provided which extend outward beyond the upper or lower edge of the first sorting net 3 on the cover plate 4, and each extending support portion 51a rotatably supports the screw portion 53a of the fastening member 53.

[0050] A screw hole 2b is formed at a position corresponding to each extended support portion 51a on the side of the upper case 2, and the first sorting screen 3 is pushed in through the screen outlet 24 to close the screen outlet 24 with the cover plate 4, and the screw portion 53a of the fastening member 53 on each extended support portion 51a is screwed into each screw hole 2b to fix the cover plate 4 to the upper case 2.

[0051] As shown in Figures 1 and 2, the downstream sorting section 1B has a lower case 6 of approximately rectangular parallelepiped shape extending horizontally from the front side to the back side of the sorting machine 1, and the lower end side of the first guide tube portion 28 faces from above at the upper inner part on one longitudinal side of the lower case 6, as shown in Figure 8.

[0052] On the other hand, at the upper part of the other longitudinal side of the lower case 6, a second discharge tube portion 61 is provided which has a shape that gradually reduces in diameter as it goes downward, with the middle part opening sideways from the upper end and communicating with the interior of the lower case 6, while the lower end opens downward.

[0053] In addition, below the second discharge tube portion 61, there is provided a third discharge tube portion 62 which has a shape that gradually reduces in diameter as it goes downward, with its upper end opening upward and communicating with the interior of the lower case 6, and its lower end opening downward.

[0054] A sieve box 7 is disposed inside the lower case 6. The sieve box 7 has a generally rectangular parallelepiped shape extending in generally the same direction as the lower case 6 and has a sorting space S2 therein.

[0055] A grain introduction portion 70a is formed at an upper portion on one longitudinal side of the sieve box 7, for introducing the grain M1 guided by the first guide tube portion 28 into the sorting space S2.

[0056] In addition, a second guide tube portion 70b that guides the grain M1 to the second discharge tube portion 61 is provided at the upper portion of the other longitudinal end of the sieve box 7, and a third guide tube portion 70c that guides the crushed grains F3 to the third discharge tube portion 62 is provided below the second guide tube portion 70b.

[0057] Further, on the lower surface of the sieve box 7, a fourth discharge tube portion 70d is provided, which has a shape that gradually decreases in diameter as it goes downward and discharges powder F4 such as bran.

[0058] The upper end of a crankshaft 7a is rotatably attached to one lower side of the sieve box 7 in the longitudinal direction.

[0059] A horizontally extending crank arm 7b is disposed below the crank shaft 7a, and the lower end of the crank shaft 7a is attached to one end of the crank arm 7b.

[0060] Further, a drive shaft 7c driven by a driving means (not shown) is disposed below the crank arm 7b, and the upper end of the drive shaft 7c is fixed to the center of the crank arm 7b.

[0061] On the other hand, a leaf spring (not shown) is attached between the other longitudinal side of the sieve box 7 and the bottom surface of the lower case 6, and when the drive shaft 7c is rotated, the crank shaft 7a moves in a circular motion in a planar view via the crank arm 7b, causing the sieve box 7 to swing horizontally.

[0062] In the sorting space S2, a second sorting net 8, a third sorting net 9, and a fourth sorting net 10 each having a substantially rectangular plate shape are arranged in sequence from above.

[0063] The second screening net 8 and the third screening net 9 have the same structure, and their mesh portions are configured to allow the broken grains F3 to pass through but not the grains M1.

[0064] The mesh portion of the fourth screening net 10 is configured to allow powder F4 such as bran to pass through but not allow crushed particles F3 to pass through.

[0065] Then, as the sieve box 7 is oscillated, the grain M1 introduced into the sorting space S2 by the grain introduction section 70a falls into the second sorting net 8 and the third sorting net 9. The second sorting net 8 and the third sorting net 9 allow the falling broken grains F3 to pass through their meshes, thereby separating them from the grains M1 that do not pass through the meshes.

[0066] The crushed particles F3 that pass through the second screening net 8 and the third screening net 9 fall into the fourth screening net 10.

[0067] On the other hand, the grain M1 that does not pass through the second sorting net 8 and the third sorting net 9 rolls along the upper surfaces of the second sorting net 8 and the third sorting net 9, then falls toward the second discharge tube portion 61, and is guided by the second discharge tube portion 61 to be discharged outside the lower case 6.

[0068] In addition, when the crushed particles F3 that pass through the second sorting net 8 and the third sorting net 9 fall into the fourth sorting net 10, the fourth sorting net 10 allows the falling powder F4 to pass through the mesh, thereby separating it from the crushed particles F3 that do not pass through the mesh.

[0069] The powder F4 that has passed through the fourth screening net 10 is guided to the fourth discharge cylindrical portion 70d and discharged to the outside of the lower case 6.

[0070] On the other hand, the crushed particles F3 that do not pass through the fourth sorting net 10 roll along the upper surface of the fourth sorting net 10, then fall toward the third discharge tube portion 62, and are guided by the third discharge tube portion 62 to be discharged outside the lower case 6.

[0071] One side of the sieve box 7 is formed with a first opening 71 corresponding to the shape of the side of the second sorting net 8, a second opening 72 corresponding to the shape of the side of the third sorting net 9, and a third opening 73 corresponding to the shape of the side of the fourth sorting net 10, and the first opening 71 and the second opening 72 are connected at their midpoints, and the second opening 72 and the third opening 73 are connected at their midpoints.

[0072] A pair of upper slide rails 71a extending in the width direction of the sieve box 7 are disposed in regions corresponding to the respective ends of the first opening 71 in the longitudinal direction of the sorting space S2.

[0073] Each upper slide rail 71a is configured to support the second sorting net 8 so that it can slide horizontally, and is configured so that the second sorting net 8 can be pulled out through the first opening 71 and removed from the sieve box 7, or the second sorting net 8 can be pushed in and attached to the sieve box 7.

[0074] Further, in the regions corresponding to the respective ends of the second opening 72 in the longitudinal direction in the sorting space S2, a pair of middle slide rails 72a extending in the width direction of the sieve box 7 are disposed.

[0075] Each middle stage slide rail 72a is configured to support the third sorting net 9 so that it can slide horizontally, and is configured so that the third sorting net 9 can be pulled out through the second opening 72 to be removed from the sieve box 7, or the third sorting net 9 can be pushed in to be attached to the sieve box 7.

[0076] Furthermore, a pair of lower slide rails 73a extending in the width direction of the sieve box 7 are disposed in regions corresponding to the respective ends of the third opening 73 in the longitudinal direction in the sorting space S2.

[0077] Each lower slide rail 73a is configured to support the fourth sorting net 10 so that it can slide horizontally, and is configured so that the fourth sorting net 10 can be pulled out through the third opening 73 and removed from the sieve box 7, or the fourth sorting net 10 can be pushed in and attached to the sieve box 7.

[0078] Below the grain introducing portion 70a of the sieve box 7, a first knob bolt 74 is attached to one end face in the longitudinal direction of the sieve box 7 so as to be capable of being screwed forward and backward.

[0079] When the first knob bolt 74 is screwed in, the tip of the first knob bolt 74 comes into contact with one longitudinal end of the second sorting net 8 that is pressed into the sieve box 7, and presses the second sorting net 8 toward the other longitudinal end, pressing the second sorting net 8 against the side of the upper slide rail 71a located downstream. This makes it possible to prevent the second sorting net 8 from rattling between the two upper slide rails 71a when the sieve box 7 swings.

[0080] Below the first knob bolt 74 of the sieve box 7, a second knob bolt 75 is attached to one end face in the longitudinal direction of the sieve box 7 so as to be capable of screwing forward and backward.

[0081] When the second knob bolt 75 is screwed in, the tip of the second knob bolt 75 comes into contact with one longitudinal end of the third sorting net 9 that is pressed into the sieve box 7, and presses the third sorting net 9 toward the other longitudinal end, forcing the third sorting net 9 against the side of the middle-stage slide rail 72a located downstream. This makes it possible to prevent the third sorting net 9 from rattling between the two middle-stage slide rails 72a when the sieve box 7 swings.

[0082] A third knob bolt 76 is attached to a frame located in the central portion of the sieve box 7 in an upwardly threadable manner in approximately the central portion of the sorting space S2.

[0083] When the third knob bolt 76 is screwed forward, the tip of the third knob bolt 76 comes into contact with the lower surface of the third sorting net 9 attached to the sieve box 7 and presses the third sorting net 9 upward, forcing the third sorting net 9 against the upper parts of both middle-stage slide rails 72a. This prevents the crushed grains F3 and powder F4 from getting stuck between the upper parts of both middle-stage slide rails 72a and the third sorting net 9, making it difficult to pull out or push the third sorting net 9 into the sieve box 7. In addition, it prevents the grains M1 from spilling out from between the upper parts of both middle-stage slide rails 72a and the third sorting net 9 and remaining inside the lower case 6.

[0084] As described above, according to the embodiment of the present invention, when the cover plate 4 is held by hand and pulled away from the upper case 2, the first sorting net 3 is pulled out of the upper case 2 together with the cover plate 4 through the net outlet 24, whereas when the cover plate 4 is held by hand and pushed closer to the upper case 2, the first sorting net 3 is pushed into the upper case 2 together with the cover plate 4 through the net outlet 24. In this way, by performing the removal and attachment operations of the cover plate 4 relative to the upper case 2, the first sorting net 3 can be simultaneously pulled out and pushed into the upper case 2, so that the first sorting net 3 can be easily attached to or removed from the upper case 2.

[0085] Furthermore, when the cover plate 4 is pulled away from the upper case 2, the first sorting net 3 is pulled out from the upper case 2 together with the cover plate 4 through the net outlet 24, eliminating the need for the worker to reach into the net outlet 24 to grab and pull out the first sorting net 3. Therefore, the first sorting net 3 can be removed efficiently for cleaning work.

[0086] Furthermore, when performing cleaning work on the first sorting net 3, the worker can grasp the handle 5 and pull the first sorting net 3 out of the upper case 2 or push it into the upper case 2. This allows the worker to hold the first sorting net 3 in a stable state, and safely perform cleaning work on the first sorting net 3. Furthermore, the worker can grasp the handle 5 and transport the first sorting net 3 removed from the upper case 2, so the first sorting net 3 can be easily moved.

[0087] In addition, since each first frame portion 51 extends in a direction intersecting the longitudinal direction of the cover plate 4, the section modulus around each first frame portion 51 in the cover plate 4 is larger than that of a simple plate-shaped cover plate. This increases the rigidity around each first frame portion 51 in the cover plate 4, making it possible to prevent the cover plate 4 from deforming and causing a gap between the cover plate 4 and the upper case 2. In addition, since the handle 5 is constructed by assembling three parts with relatively simple shapes, manufacturing costs and parts costs can be kept low.

[0088] In addition, since there is no portion of the cover plate 4 that is fastened to the upper case 2 by the fastening member 53, it is possible to narrow the area of ​​the cover plate 4 that overlaps with the upper case 2. This improves the material yield and allows the sorting machine 1 to be manufactured at low cost.

[0089] Furthermore, since the handle 5 is attached to the cover plate by welding, no hole for fixing the handle 5 is formed in the cover plate 4. Therefore, it is possible to prevent bran or the like from leaking out from inside the upper case 2 through a hole formed for fixing the handle 5 to the cover plate 4.

[0090] In the embodiment of the present invention, the handle 5 is composed of three parts: two first frame portions 51 and one second frame portion 52. However, this is not limited to this and may be composed of, for example, one part having a wide U-shape.

[0091] Furthermore, in the embodiment of the present invention, a handle may be added to safely operate or transport the first sorting net 3. For example, by adding a handle to the lower part of the lower frame 31c so as to protrude downward, a worker can safely operate the first sorting net 3 by holding the handle 5 with the left hand and the added handle with the right hand.

[0092] In addition, in the embodiment of the present invention, the cover plate 4 is fixed to the upper case 2 by a fastening member 53, but this is not limited thereto. For example, the cover plate 4 may be fixed to the upper case 2 by a snap lock, a toggle clamp, or the like.

[0093] In addition, if the first sorting net 3 is heavy, a support means may be provided extending outward from the net outlet 24 so that the support means supports the first sorting net 3 from below after it is pulled out of the upper case 2.

[0094] In addition, in the embodiment of the present invention, the third sorting net 9 is pressed against the side of the middle-stage slide rail 72a by the second knob bolt 75, while the third knob bolt 76 is pressed against the upper part of the middle-stage slide rail 72a. However, the third sorting net 9 may be pressed against the side and upper part of the middle-stage slide rail 72a simultaneously by a single knob bolt that presses the third sorting net 9 diagonally upward from below toward the other side of its longitudinal direction. [Industrial Applicability]

[0095] The present invention is suitable for a downstream grain sorting machine that sorts grains based on whether or not they pass through a sorting net. [Explanation of symbols]

[0096] 1. Sorting machine 2 Upper case (main case) 3. First sorting net 4 Lid plate 5 Handle 24 Net outlet 51 First frame section 51a Extending support part 52 Second frame section 53 Fastening members M1 Grain

Claims

1. A flow-down type grain sorting machine includes a main body case having a sorting net attached thereto, which sorts grains based on whether they pass through a mesh, and is configured so that the sorting net can be pulled out and removed from the main body case through a net outlet formed in the main body case, or the sorting net can be pushed into the main body case and attached thereto. The net outlet is provided on a side surface of the main body case, A cover plate is fixed to a side of the sorting net so as to cover the entire area of ​​the net outlet when the sorting net is pushed into the main body case from the net outlet, A handle is attached to the cover plate to be held by an operator when pulling out or pushing the sorting net, The handles are provided in a pair at a predetermined interval in the longitudinal direction of the cover plate, and comprise a first frame portion extending in a direction intersecting the longitudinal direction of the cover plate, and a second frame portion provided at a position spaced a predetermined interval from the cover plate and bridging the first frame portions.

2. In the grain flow-down sorting machine according to claim 1, A grain flow-down sorting machine characterized in that a pair of extending support portions are provided on both longitudinal sides of the first frame portion, which extend outward from the edge of the cover plate and rotatably support a fastening member, and the cover plate is fixed to the main body case by screwing the fastening member into the side of the main body case.

3. In the grain flow-down sorting machine according to claim 1 or 2, A grain flow-down sorting machine, characterized in that the handle is fixed to the cover plate by welding.

4. A flow-down type grain sorting machine comprising a main body case with a sorting net attached thereto for sorting grains based on whether they pass through a mesh, the sorting net being configured to be pulled out and removed from the main body case through a net outlet formed in the main body case, or to be attached to the main body case by pushing the sorting net in, The net outlet is provided on a side surface of the main body case, A cover plate is fixed to a side of the sorting net so as to cover the entire area of ​​the net outlet when the sorting net is pushed into the main body case from the net outlet, A handle is attached to the cover plate to be held by an operator when pulling out or pushing the sorting net, A grain flow-down sorting machine, characterized in that the handle is fixed to the cover plate by welding.

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