JP5880846B2 - Sorting device - Google Patents

Description

  The present invention relates to a sorting apparatus that sorts objects by size, size, or shape (simply referred to as size).

Conventionally, this type of technology has been described in Patent Document 1.
This comprises a cylindrical sorting drum (sorting cylinder) having small to large sorting holes on the circumferential surface from the top to the bottom. Then, the sorting object such as fruit is introduced from the upstream side of the sorting drum, and the drum is dropped (leaked) from the sorting hole while rotating the drum around the central axis (rotating shaft). This is a separate sorting device. The sorting drum is provided with a restraining plate (a restraining spiral) for preventing the object to be sorted from running too much.

JP 2007-054814 A

  However, in the above prior art, it is necessary to incline the central axis of the sorting drum in order to move the object to be sorted.

  An object of the present invention is to provide a sorting apparatus that can move and sort an object to be sorted without inclining the central axis (rotating shaft) of a sorting drum.

The said subject is solved by making a sorting device into the structure of each following aspect.
As with the claims, each aspect is divided into sections, each section is numbered, and is described in a form that cites the numbers of other sections as necessary. This is merely for the purpose of facilitating the understanding of the present invention, and the technical features described in this specification and combinations thereof should not be construed as being limited to those described in the following sections. . In addition, when a plurality of items are described in one section, it is not always necessary to employ the plurality of items together, and it is also possible to take out only a part of the items and employ them.

Of following sections (1) term in claim 1, (2) term in claim 2, (3) terms to claim 3, each corresponding.

(1) central axis comprising a plurality of drums of overlapping disposed a frustoconical tubular in common, each drum sorting hole of different sizes for each drum is formed on each peripheral surface, each said drum Sorting holes of different sizes are set smaller as they go from a drum closer to the center axis to a farther drum, and each of the objects to be sorted is rotated into the drum and positioned in the innermost drum. Is a sorting device that sorts objects to be sorted depending on whether or not they fall from the sorting holes of each drum,
The sorting apparatus according to claim 1, wherein the drums are arranged such that directions in which a cross-sectional area in a direction perpendicular to the central axis of each drum gradually increases are opposite to each other.
(2) the central axis comprises a plurality of drums of overlapping disposed a frustoconical tubular in common, each drum is formed sorting hole of different sizes for each drum, each circumferential surface, each said drum Sorting holes of different sizes are set smaller as they go from a drum closer to the center axis to a farther drum, and each of the objects to be sorted is rotated into the drum and positioned in the innermost drum. Is a sorting device that sorts objects to be sorted depending on whether or not they fall from the sorting holes of each drum,
Each drum is disposed so that the direction in which the cross-sectional area in the direction perpendicular to the central axis of each drum increases gradually becomes the same direction;
Between each of the drums, each drum has a truncated cone-shaped mantle that has a common central axis and no selection hole, and each drum has a direction in which a cross-sectional area in a direction perpendicular to the central axis gradually increases. A sorting device characterized by being arranged in the reverse direction.
(3) The sorting apparatus according to claim 1 or 2, wherein a weir is provided in a direction intersecting a drum central axis direction in the drum.

(1) According to the invention described in claim, the direction in which the cross-sectional area in a direction orthogonal to the central axis of each drum is gradually increased, by which is disposed a respective drum so as to be opposite to each other, closest to the central axis The object to be sorted put into the drum positioned inside is sorted by whether or not it falls from the drum sorting hole while moving in the direction in which the cross-sectional area in the direction perpendicular to the central axis of the drum gradually increases, A sorting hole set to be smaller than the sorting hole of the drum while the object to be sorted that has fallen from the sorting hole of the drum moves in the direction opposite to the drum inside the drum located outside the drum. Therefore, the sorting capacity and the number of sort types can be increased without increasing the overall length of the apparatus in the drum central axis direction.
According to the invention described in item (2), each drum is disposed so that the direction in which the cross-sectional area in the direction perpendicular to the central axis of each drum gradually increases is the same direction, and each drum is By arranging the frustoconical outer jacket having a common central axis and no selection hole, so that the direction in which the cross-sectional area in the direction orthogonal to the central axis gradually increases is opposite to each drum, Whether to-be-sorted material put into the drum located closest to the center axis and located on the innermost side falls in a direction in which the cross-sectional area in a direction perpendicular to the center axis of the drum gradually increases and falls from the drum selection hole Then, the object to be sorted that has been sorted and dropped from the sorting hole of the drum is moved in the opposite direction to the drum by the outer jacket, and is put into the drum located outside the drum. In the same direction as the drum Et al., Since that would be selected by whether or not dropped from the sorting hole smaller set sorting hole than the drum, without increasing the overall length of the drum central axis of the apparatus, sorting capacity, sorting type The number can be increased. In addition, since all the objects to be sorted that have fallen from the sorting hole of the first drum are guided and moved to the vicinity of the opening (upstream end portion) on the small diameter side of the second drum, the sorting time can be extended.
According to the invention described in the item (3), since the time for moving the object to be discharged to the discharge side is increased by the weir, the selection time can be extended.

It is a perspective view which shows the outline of the basic composition of the sorting device by this invention. It is a perspective view which shows the outline of a 1st application structure (multiple drum structure) similarly. It is a perspective view which shows the outline of a 2nd application structure (multiple drum structure provided with the mantle) similarly. It is a side view which cuts and shows 1st Embodiment of the sorting device by this invention. It is a front view of the end surface plate 42 in FIG. It is a front view of the end surface plate 43 in FIG. It is a front view of the end surface board 44 in FIG. It is a front view of the end surface board 45 in FIG. It is a figure which shows the roller in FIG. 4 from the upper direction of a rotation tank. FIG. 10 is a left side view of FIG. 9. It is a side view which cuts and shows the outline of 2nd Embodiment of this invention apparatus. It is a front view of the dam plate 81A in FIG. It is a front view of the dam plate 81B in FIG. It is a front view of the dam plate 81C in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol shows the same or an equivalent part between each figure.
FIG. 1 is a perspective view showing an outline of a basic configuration of a sorting apparatus according to the present invention.
As shown in this figure, the device of the present invention basically rotates a first drum 2A having a sorting hole 1A formed on its peripheral surface around its central axis (drum central axis) 3, and the first drum The object to be sorted 5 is introduced into the 2A from the inlet 4. Then, depending on whether or not each of a large number of inputted sorting objects 5 falls from the sorting hole 1A opened in the middle of reaching the discharge port 6A, the size (size / size) of each of the sorting objects 5 is determined. This is a sorting device for sorting dimensions or shapes).
One or more selection holes 1A on the peripheral surface of the first drum 2A are formed, usually a large number in the direction of the central axis 3 over the entire circumference of the first drum 2A.

  That is, the object to be sorted 5 smaller than the size of the sorting hole 1A falls from the sorting hole 1A, and the object to be sorted 5 larger than the size of the sorting hole 1A is discharged from the discharge port 6A without dropping from the sorting hole 1A. Sorting of the sizes of the multiple sorting objects 5 put in the first drum 2A is performed.

In the illustrated example, since the mesh material 7A is used as the peripheral member of the first drum 2A, a large number of objects to be sorted 5 that are input to the input port 4 depending on whether the mesh material 7A is larger or smaller than the mesh opening. Each size is sorted. In the case where the mesh material 7A is used as the peripheral member of the first drum 2A, one opening thereof forms one sorting hole 1A.
1 is a motor that rotates the first drum 2A around the central axis 3.

In such a configuration, in order to efficiently perform the above-described sorting by feeding a large number of objects to be sorted 5 into the first drum 2A from the charging port 4, and particularly continuously charging them, Is effectively moved to the discharge port 6 </ b> A side without staying immediately below the input port 4. It is further effective to make this movement by utilizing the weight of the object to be sorted 5.
For this purpose, the inner peripheral lower surface of the first drum 2A may be inclined downward from the inlet 4 side toward the outlet 6A. However, as a method for this, the central shaft 3 of the first drum 2A is selected. In general, the object 5 is inclined downward from the inlet 4 side toward the outlet 6A.
In the present invention, the first drum 2A is formed in the shape of a truncated cone whose sectional area in the direction perpendicular to the central axis 3 gradually increases from the inlet 4 side to the outlet 6A side of the object 5 to be sorted. The inner peripheral lower surface of the first drum 2A is inclined downward from the inlet 4 side toward the outlet 6A.

According to the basic configuration described above, since the shape of the first drum 2A itself (conical truncated cone shape) moves using the weight of the object to be sorted 5 toward the discharge port 6A, the center of the first drum 2A is obtained. It is no longer necessary to tilt the axis 3. Accordingly, the degree of freedom in setting the direction of the drum central shaft 3 when the first drum 2A is installed is increased.
In particular, if the proper inclination angle of the first drum 2A necessary for the movement of the object to be sorted 5 using its own weight toward the discharge port 6A is set to the truncated cone shape of the first drum 2A, The following effects can be demonstrated. That is, the above-described downward inclination can be appropriately set by simply turning in the horizontal direction without fine adjustment of the direction of the drum center shaft 3 when the first drum 2A is installed.
In the selection, the first drum 2A may be rotated after the material 5 to be selected is put into the first drum 2A.

FIG. 2 is a perspective view showing an outline of the first applied configuration of the sorting apparatus according to the present invention with a part thereof broken or omitted.
In this first application example, a plurality of drums 2 having a sorting hole 1 formed on the peripheral surface, here three drums 2 (first drum 2A, second drum 2B, third drum 2C) are provided. .
In this case, the second drum 2B is disposed on the outer periphery of the first drum 2A, and the third drum 2C is disposed on the outer periphery of the second drum 2B so as to overlap each other with a predetermined central interval. .
The sorting holes 1 (1A to 1C) on the peripheral surfaces of the drums 2 (2A to 2C) are arranged with the size set for each drum 2, but the drums with the sorting holes 1 set to be large. The two are disposed so as to be located on the inner peripheral side. That is, the sizes of the sorting holes 1A to 1C are set to 1A>1B> 1C. In FIG. 2, only a part of the sorting holes 1A to 1C is shown.

Each of the drums 2 (2A to 2C) is formed in a truncated cone shape, but the direction in which the cross-sectional area in the direction orthogonal to the drum central axis 3 gradually increases (hereinafter referred to as the cross-sectional area gradually increasing direction). , Are set alternately.
That is, the cross-sectional area gradually increasing direction of the second drum 2B is directed in the direction opposite to the cross-sectional area gradually increasing direction of the first drum 2A, and the cross-sectional area gradually increasing direction of the third drum 2C is the cross-sectional area gradually increasing direction of the second drum 2B. It is directed in the reverse direction (the same direction as the cross-sectional area gradually increasing direction of the first drum 2A).
And the opening of each large diameter part side of the 1st, 2nd, 3rd drum 2A, 2B, 2C was formed in those peripheral surfaces in the 1st, 2nd, 3rd drum 2A, 2B, 2C. The outlets 6A, 6B, and 6C of the object to be sorted 5 that did not fall from the sorting holes 1A, 1B, and 1C are used.

  In the illustrated example, mesh members 7 (7A to 7C) are used for the peripheral members of the respective drums 2 (2A to 2C), and the meshes become finer in the order of the first drum 2A → the second drum 2B → the third drum 2C. It is set so that the opening size is small. When the mesh material 7 (7A to 7C) is used for the peripheral surface member of each drum 2 (2A to 2C), one opening forms one sorting hole 1.

With the above configuration, when the first to third drums 2A to 2C are rotated, four types of sorting are performed with respect to the sizes of the multiple objects to be sorted 5 introduced into the first drum 2A from the insertion port 4. Is called.
That is, among the objects to be sorted 5 put into the first drum 2A, the large objects to be sorted 5 with respect to the openings (the sorting holes 1A) of the mesh material 7A of the first drum 2A are discharged from the first drum 2A. The small object to be sorted 5 discharged from the outlet 6A falls from the sorting hole 1A of the first drum 2A to the lower surface of the inner periphery of the second drum 2B.
Of the objects to be sorted 5 that have fallen on the inner peripheral lower surface of the second drum 2B, the larger objects to be sorted 5 are larger than the openings (the sorting holes 1B) of the mesh material 7B of the second drum 2B. The small object to be sorted 5 discharged from the outlet 6B falls from the sorting hole 1B of the second drum 2B to the lower surface of the inner periphery of the third drum 2C.
Of the objects to be sorted 5 that have fallen on the inner peripheral lower surface of the third drum 2C, the objects to be sorted 5 that are larger than the mesh openings (sorting holes 1C) of the mesh material 7C of the third drum 2C are the third drum 2C. The small object to be sorted 5 is discharged from the outlet 6C, and falls from the sorting hole 1C of the third drum 2C directly below the third drum 2C.

  As described above, when the first to third drums 2A to 2C are rotated, the first, second, third drums 2A, Three types of sorting by discharging from the respective outlets 6A, 6B, 6C of 2B and 2C, and one type of sorting by dropping from the sorting hole 1C of the third drum 2C directly below the third drum 2C All four types of sorting are performed. Note that the first to third drums 2 </ b> A to 2 </ b> C may be rotated after the material to be sorted 5 is put into the first drum 2 </ b> A.

According to the first applied configuration described above, in addition to the effect of the basic configuration described above, it is possible to increase the sorting processing capability and the number of sort types without increasing the overall length of the apparatus in the direction of the drum central axis 3. it can.
The sorting is performed depending on whether the sorting object 5 falls from the sorting hole 1 (1A to 1C), and therefore does not necessarily correspond to the size of the sorting object 5 on a one-to-one basis. For example, if there are a plurality of sort objects 5 having a size larger than the sorting hole 1A in the sort objects 5 put into the first drum 2A, all the sort objects 5 of the plural size types are discharged. It is discharged from the outlet 6A. On the other hand, when there are a plurality of sort objects 5 having a size smaller than the sorting hole 1A, all the sort objects 5 of the plural size types fall from the sorting hole 1A. Similarly, when there are a plurality of types of objects to be sorted 5 that are smaller than the sorting holes 1B but larger than the sorting holes 1C, all of the plurality of sizes of the objects to be sorted 5 are discharged from the discharge port 6C. Thus, one sort of sort means such sort and is not necessarily sorted one-on-one with the size of the sorting object 5. The same applies to the following examples.

FIG. 3 is a perspective view schematically showing a second applied configuration of the sorting apparatus according to the present invention, with a part thereof broken or omitted.
In this second application example, a plurality of drums 2 having a sorting hole 1 formed on the peripheral surface, here two drums (first drum 2A, second drum 2B) and an outer mantle 31 are provided. .
In this case, the outer drum 31 is disposed on the outer periphery of the first drum 2A, and the second drum 2B is disposed on the outer periphery of the outer sleeve 31 so as to overlap each other at a predetermined interval with the central shaft 3 in common.
The sorting holes 1 (1A, 1B) on the peripheral surface of each drum 2 (2A, 2B) are aligned with the size set for each drum 2, but the drum with the sorting hole 1 set large. The two are disposed so as to be located on the inner peripheral side. That is, the size of the sorting holes 1A and 1B is set to 1A> 1B. The outer jacket 31 is made of a plate body in which no sorting hole is formed. In FIG. 3, only a part of the sorting holes 1A and 1B is shown.

The first and second drums 2A, 2B and the mantle 31 are all formed in a truncated cone shape, but the direction in which the cross-sectional area in the direction perpendicular to the drum center axis 3 gradually increases (the cross-sectional area gradually increasing direction) is , Are set alternately.
That is, the cross-sectional area gradually increasing direction of the outer cannula 31 is directed in the opposite direction to the cross-sectional area gradually increasing direction of the first drum 2A, and the cross-sectional area gradually increasing direction of the second drum 2B is opposite to the cross-sectional area gradually increasing direction of the outer cannula 31 (first 1 drum 2A is directed in the same direction as the cross-sectional area gradually increasing direction).
The openings on the large diameter side of the first and second drums 2A and 2B did not fall from the sorting holes 1A and 1B formed on the peripheral surfaces of the first and second drums 2A and 2B. The outlets 6 </ b> A and 6 </ b> B for the sorting object 5 are used.

  In the illustrated example, mesh materials 7 (7A, 7B) are used for the peripheral members of the first and second drums 2A, 2B, and the meshes are finer in the order of the first drum 2A → the second drum 2B (mesh The opening dimension is set to be small). When the mesh material 7 (7A, 7B) is used for the peripheral members of the first and second drums 2A, 2B, one of the openings forms one sorting hole 1.

With the above configuration, when the first and second drums 2A and 2B are rotated, three types of sorting are performed with respect to the sizes of the multiple objects to be sorted 5 introduced into the first drum 2A from the insertion port 4. Is called.
That is, among the objects to be sorted 5 put into the first drum 2A, the large objects to be sorted 5 with respect to the openings (the sorting holes 1A) of the mesh material 7A of the first drum 2A are discharged from the first drum 2A. The small object to be sorted 5 discharged from the outlet 6A falls from the sorting hole 1A of the first drum 2A to the lower surface of the inner periphery of the mantle 31.

The outer mantle 31 receives the object to be sorted 5 that has fallen from the sorting hole 1A of the first drum 2A, and the outer jacket 31 is all on the small diameter side of the second drum 2B regardless of the dropping position in the direction of the central axis 3 in the first drum 2A. Guide and move near the opening (upstream end).
Among the objects to be sorted 5 that have been guided and moved, the larger objects to be sorted 5 are discharged from the discharge port 6B of the second drum 2B and smaller than the openings (the sorting holes 1B) of the mesh material 7B of the second drum 2B. The object to be sorted 5 falls from the sorting hole 1B of the second drum 2B to just below the second drum 2.

  As described above, when the first and second drums 2A, 2B and the mantle 31 are rotated, the first, second drums 2A, Two types of sorting by being discharged from the respective outlets 6A and 6B of 2B, and one type of sorting that has fallen directly below the second drum 2B from the opening (sorting hole 1B) of the mesh material 7B of the second drum 2B All three types of sorting are performed. Note that the first and second drums 2A and 2B and the mantle 31 may be rotated after the material to be sorted 5 is put into the first drum 2A.

  According to the second applied configuration described above, in addition to the effect of the basic configuration described above, it is possible to increase the sorting processing capability and the number of sort types without increasing the overall length of the apparatus in the drum central axis 3 direction. it can.

In particular, the provision of the mantle 31 guides and moves all the objects to be sorted 5 that have dropped from the sorting hole 1A of the first drum 2A to the vicinity of the small diameter side opening (upstream end) of the second drum 2B. Therefore, even if the inclination directions of the first and second drums 2A and 2B are the same, both the drums 2A and 2B can be arranged on the inner and outer circumferences.
Further, the sorting time by the second drum 2B (mesh material 7B) can be made longer than that in the configuration in which the mantle 31 is not provided.

Next, a first embodiment of the sorting apparatus according to the present invention will be described with reference to FIGS.
FIG. 4 is a side view showing the overall configuration of the first embodiment of the device of the present invention, with a part cut. As can be seen from this figure, the first embodiment applies the first applied configuration shown in FIG. 2, and the components shown in FIG. 2 are shown in cross section in FIG.
As shown in FIG. 4, the sorting apparatus according to the first embodiment includes three drums 2 (a first drum 2A, a second drum 2B, and a third drum 2C). In this case, the first to third drums 2A to 2C are arranged so as to overlap each other at a predetermined interval in the order of the first drum 2A → the second drum 2B → the third drum 2C from the inner peripheral side toward the outer peripheral side. It is installed. The drum center shaft 3 is common to the first to third drums 2A to 2C.
The first to third drums 2A to 2C are all formed in a truncated cone shape, but the cross-sectional area gradually increasing direction is set alternately.

Although not shown in FIG. 4 on the peripheral surfaces of the first to third drums 2A to 2C, as shown in FIG. 2, sorting holes 1 (1A, 1B, 1C) are formed. In this case, the sizes of the sorting holes 1A, 1B, and 1C are set to 1A>1B> 1C.
The openings on the large diameter side of the first to third drums 2A to 2C do not fall from the sorting holes 1A, 1B and 1C formed on the peripheral surfaces of the first to third drums 2A to 2C. The outlets 6A, 6B, and 6C of the selection target 5 are selected.

  Mesh members 7 (7A, 7B, 7C) are used for the peripheral members of the first to third drums 2A to 2C, and the openings are in the order of the first drum 2A, the second drum 2B, and the third drum 2C. The dimensions are set to be small. One mesh of the mesh materials 7A, 7B, and 7C forms one sorting hole 1A, 1B, and 1C (see FIG. 2).

The first to third drums 2 </ b> A to 2 </ b> C configured as described above are integrated and housed in the rotary tank 41.
The rotary tank 41 includes a pair of end face plates 42, 43; 44, 45 facing each other on both ends (left and right ends in the figure).
As shown in FIGS. 5 to 8, the end face plates 42, 43; 44, 45 are each formed into an outer shape circular with the same diameter, and are connected and fixed by a plurality of frames 46.
As shown in FIGS. 5 and 6, the left end face plates 42 and 43 are provided with through holes 42 a and 43 a communicating with the opening on the small diameter side of the first drum 2 </ b> A in the center, so that the objects to be sorted 5 The inlet 4 is formed.
The left end face plate 43 and the right end face plate 45 are provided with the first to third drums so that the first to third drums 2A to 2C are integrated and accommodated in the rotary tank 41 while maintaining the positional relationship shown in FIG. The left and right ends of 2A to 2C are supported and fixed (see FIGS. 6 and 8). In the illustrated example, the right end portion of the first drum 2A is fixed to the right end face plate 44 (see FIG. 7).
On the right end face plate 44, the left end face plate 43, and the right end face plate 45 that fix the large diameter portions of the first to third drums 2A to 2C, the positions of the discharge ports 6A to 6C of the sorting object 5 in the drums 2A to 2C are provided. A plurality of windows 43b, 44a, 45b for limiting the size are formed (see FIGS. 6 to 8).

In addition, at the circular central portion of the right end face plate 44, that is, at the position serving as the rotation center of the rotating tub 41, the rotation shaft 47 of the motor M that rotates the first to third drums 2 </ b> A to 2 </ b> C around the central axis 3 has the flange 48. Connected through. Thereby, the rotating tank 41 is configured to be rotatable in a state where the drum center axis 3 and the rotating tank center axis 71 coincide with each other.
The rotating tub 41 is rotated by the motor M as described above. At this time, a pair of rollers 80 that rotatably support the rotating tub 41 are disposed on the left and right ends of the rotating tub 41 ( 9 and 10).

The installation locations of the rotating tub 41 and the motor M are covered with a safety cover 49, and the installation locations of the rotating tub 41 and the motor M are partitioned by a partition wall 50.
The safety cover 49 is provided with a loading chute 51 for loading the object to be sorted 5 into the loading port 4.
In FIG. 4, reference numerals 61 to 64 denote collection chutes for collecting the sorted object 5 after sorting. Specifically, 61 is collected from the discharge port 6A, 62 is collected from the discharge port 6B, and 63 is collected from the discharge port 6C to collect the items to be discharged (indicated by dotted arrows in FIG. 4). Show the shoot. Reference numeral 64 denotes a collection chute for collecting the object to be sorted 5 (shown by a dotted arrow in FIG. 4) falling from the sorting hole 1C of the third drum 2C as shown in FIG.

  In the first embodiment described above, when the motor M in FIG. 4 is rotated, the rotating tub 41 connected to the motor rotating shaft 47 rotates around the central axis 71 and the first to third drums 2A to 2C. Also rotate around the central axis 3 common to the central axis 71.

During the rotation of the first to third drums 2 </ b> A to 2 </ b> C, when the object to be sorted 5 is thrown into the first drum 2 </ b> A through the charging chute 51 and the charging port 4 in order, Four types of sorting are performed.
That is, among the objects to be sorted 5 put into the first drum 2A, the objects to be sorted 5 larger than the mesh of the mesh material 7A of the first drum 2A are discharged from the discharge port 6A of the first drum 2A and are small. The object to be sorted 5 falls from the opening of the first drum 2A to the inner peripheral lower surface of the second drum 2B.
Among the objects to be sorted 5 that have fallen on the inner peripheral lower surface of the second drum 2B, the objects to be sorted 5 that are larger than the mesh openings of the mesh material 7B of the second drum 2B are discharged from the discharge port 6B of the second drum 2B and are small. The object to be sorted 5 falls from the opening of the second drum 2B to the inner peripheral lower surface of the third drum 2C.
Of the objects to be sorted 5 that have fallen on the inner peripheral lower surface of the third drum 2C, the objects to be sorted 5 that are larger than the mesh openings of the mesh material 7C of the third drum 2C are discharged from the discharge port 6C of the third drum 2C. The small object to be sorted 5 falls from the opening of the third drum 2C directly below the third drum 2C.

The object to be sorted discharged from the discharge port 6A (indicated by a dotted arrow in FIG. 4) passes through the collection chute 61, and the item to be sorted (also indicated by a dotted arrow in the same figure) discharged from the discharge port 6B. After that, the objects to be sorted (also indicated by dotted arrows) discharged from the discharge port 6C are collected through the collection chute 63.
In addition, an object to be sorted (also indicated by a dotted arrow) dropped from the opening of the third drum 2 </ b> C is collected through a collection chute 64.

According to 1st Embodiment described above, the movement using the self-weight to the discharge ports 6A-6C side of the to-be-sorted object 5 is performed by the shape itself (conical truncated cylinder shape) of the first to third drums 2A-2C. Therefore, it is not essential to tilt the central axis 3 of the drums 2A to 2C. Accordingly, the degree of freedom in setting the direction of the drum center shaft 3 when the first to third drums 2A to 2C (the rotation tank 41) are installed is increased.
In particular, an appropriate inclination angle of the first to third drums 2A to 2C necessary for the movement of the object to be sorted 5 toward the discharge ports 6A to 6C is set to a truncated cone of the first to third drums 2A to 2C. If the shape itself is set, the following effects can be exhibited. That is, without making fine adjustment of the direction of the drum center shaft 3 at the time of installation of the first to third drums 2A to 2C, the downward inclination for the above-mentioned movement of the object to be sorted 5 can be performed simply by directing it in the horizontal direction. Can be set appropriately.
Further, it is possible to increase the sorting capacity and the number of sorting types without increasing the overall length of the apparatus in the direction of the drum central axis 3.

FIG. 11: is a side view which cuts and shows the outline of 2nd Embodiment of this invention apparatus. As shown in this figure, the second embodiment applies the basic configuration shown in FIG. 1, and the cross section of the component shown in FIG. 1 is shown in FIG.
As shown in FIG. 11, the sorting apparatus according to the second embodiment rotates a first drum 2A having a sorting hole 1A (see FIG. 1) on its peripheral surface around a central axis 3, and the inside of the first drum 2A. Then, the object to be sorted 5 is introduced from the inlet 4. Then, the size of each of the objects to be selected 5 is selected according to whether or not each of the many objects to be selected 5 falls from the above-described selection hole 1A that opens in the middle of reaching the discharge port 6A. It is a sorting device.
That is, the objects to be sorted 5 smaller than the size of the sorting hole 1A fall from the sorting holes 1A, and the large objects to be sorted 5 are discharged from the discharge port 6A without dropping, and are put into the first drum 2A. The size of each of the objects to be sorted 5 is sorted. In the illustrated example, since the mesh material 7A is used for the peripheral surface member of the first drum 2A, the size of each of a large number of inputted objects 5 to be sorted is determined depending on whether the mesh material is larger or smaller than the opening. Is done.

In the second embodiment, in the basic configuration described above, the weir is provided in the direction intersecting the direction of the drum central axis 3 in the first drum 2A, and the weir plate 81 is provided in the direction orthogonal to the direction of the central axis 3 in the illustrated example. Here, three types (81A, 81B, 81C) of the weir plates 81 are arranged at appropriate intervals in the direction of the drum central axis 3.
The weir plate 81 is a member whose main purpose is to secure the sorting time of the object to be sorted 5 by the mesh material 7A opening (sorting hole 1A: see FIG. 1) longer than the basic configuration shown in FIG.
Further, the weir plate 81 partitions the sorting area in the direction of the drum central axis 3 in the first drum 2A. In the illustrated example, the inside of the first drum 2A is divided into three sorting areas 91, a main sorting area 91A, a first auxiliary sorting area 91B, and a second auxiliary sorting area 91C in order from the inlet 4 side to the outlet 6A side. Partition.

  FIG. 12, FIG. 13, and FIG. 14 illustrate the dam plates 81A, 81B, and 81C. As shown in FIGS. 12 to 14, the weir plates 81 </ b> A, 81 </ b> B, and 81 </ b> C have a predetermined size (circumferential length) at a predetermined position (position in the radial direction: height position). And a size determined by the width in the radial direction). If the position of the passage hole 82 is increased (closer to the central axis 3), the moving time of the object to be sorted 5 to the discharge port 6A side by the weir plate 81 takes longer, so in the sorting area 91 partitioned by the weir plate 81 The sorting time of the sorting object 5 becomes longer accordingly.

In the example shown in FIG. 11, as can be seen from FIGS. 12 to 14, the height positions of the passage holes 82 of the dam plates 81 </ b> A and 81 </ b> C are higher than the height positions of the passage holes 82 of the dam plate 81 </ b> B. The sorting time in the main sorting area 91A and the second auxiliary sorting area 91C partitioned by 81A and 81C becomes longer. The sorting time in one sorting area 91 can be increased by setting the distance of the sorting area 91 in the direction of the drum central axis 3 longer.
Therefore, by appropriately setting the height position of the passage hole 82 of the barrier plate 81 and the distance of the sorting area 91 in the direction of the drum central axis 3, the sorting processing ability of the sorting object 5 can be set.
In the illustrated example, in the main sorting area 91A, the height position of the passage hole 82 of the weir plate 81A that partitions the main sorting area 91A is high, and the distance in the direction of the drum central axis 3 is long, so that the sorting time is long and the sorting processing capacity is also high. A high sorting area 91 is obtained.
The barrier plate 81 can be applied not only to the basic configuration shown in FIG. 1 but also to the first and second applied configurations shown in FIGS. 2 and 3. When applied to the configuration shown in FIGS. 2 and 3, the weir plate 81 provided other than the innermost drum is formed in an annular shape, and a passage hole 82 is formed in the annular plate surface.

  1 (1A, 1B, 1C): sorting hole, 2 (2A, 2B, 2C): drum (first drum, second drum, third drum), 3: drum central shaft, 4: inlet, 5: covered Sorted item, 6 (6A, 6B, 6C): discharge port, 7 (7A, 7B, 7C): mesh material, 31: jacket, 81 (81A, 81B, 81C): weir plate (weir), M: motor.

Claims (3)

A plurality of frustoconical drums having a common central axis and arranged in an overlapping manner are provided, and each drum has a sorting hole of a different size for each drum , and a different size for each drum. The sorting holes are set to be smaller as the distance from the drum closer to the center axis to the farther drum is reached, the respective drums are rotated around the center axis, and the objects to be sorted placed in the innermost drum are moved to the respective drums. A sorting device that sorts objects to be sorted depending on whether or not they fall from the sorting holes,
The sorting apparatus according to claim 1, wherein the drums are arranged such that directions in which a cross-sectional area in a direction perpendicular to the central axis of each drum gradually increases are opposite to each other. A plurality of frustoconical drums having a common central axis and arranged in an overlapping manner are provided, and each drum has a sorting hole of a different size for each drum , and a different size for each drum. The sorting holes are set to be smaller as the distance from the drum closer to the center axis to the farther drum is reached, the respective drums are rotated around the center axis, and the objects to be sorted placed in the innermost drum are moved to the respective drums. A sorting device that sorts objects to be sorted depending on whether or not they fall from the sorting holes,
Each drum is disposed so that the direction in which the cross-sectional area in the direction perpendicular to the central axis of each drum increases gradually becomes the same direction;
Between each of the drums, each drum has a truncated cone-shaped mantle that has a common central axis and no selection hole, and each drum has a direction in which a cross-sectional area in a direction perpendicular to the central axis gradually increases. A sorting device characterized by being arranged in the reverse direction.   The sorting apparatus according to claim 1 or 2, wherein a weir is provided in a direction intersecting a drum central axis direction in the drum.

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