JP2020151637A - Sorting device - Google Patents

Abstract

To provide a sorting device which can efficiently sort a product and a non-product at low cost by using air intake action.SOLUTION: A sorting device comprises a transport device 1 including a first pulley arranged on an upstream side and a second pulley 11 arranged on a downstream side, and a conveyor belt 17 which is endlessly bridged between the first pulley and the second pulley 11 and is rotatably arranged. The conveyor belt 17 is so configured as to be capable of ventilating from a front surface side, which becomes a conveyance surface 19, to a rear surface side. The second pulley 11 has a side peripheral surface contacting the conveyor belt 17 which is so configured as to be capable of ventilating, and the second pulley 11 comprises a suction port 31 which performs suction action by air intake operation of an air intake device 27 and which is so provided as to face the conveyance surface 19 of a folding area A3 on a downstream side of the conveyor belt 17 contacting the second pulley 11 via the second pulley 11.SELECTED DRAWING: Figure 10

Description

The present invention relates to a sorting device, for example, a device that automatically sorts foods such as green soybeans that can be provided as commercial products from non-commodities such as stems / leaves and garbage that are carried together.

For example, green soybeans and other pods are harvested from the field with branches or stems, and after removing the branches, stems, leaves or dust, they are divided into predetermined amounts and shipped as individual packages. There is.
Green soybeans such as green soybeans usually contain two or more beans in the pod, but there is one that contains only one or one that has the pod torn during transportation. Or there are things that have all fallen. Such items are treated as "waste (non-commodity)" and are not distributed to the market as commodities. In addition, leaves, stems, branches, etc. must be treated as "waste (non-commercial)", so workers try to remove them manually in advance as much as possible, but a large amount of green soybeans are processed in a short time. In doing so, some leaves and stems may be transported to a processing plant or the like in a mixed state.
Even if the worker removes the "waste (non-commodity)" in advance in this way, about 40% of the "waste" is contained in the transported items, so about 40% of the items can be shipped as products. It is 60%. That is, about 40% of these "wastes" must be selected and removed.

Conventionally, such sorting / removing work has been performed manually by each worker. Such work requires a great deal of labor, and has poor workability and a large time loss.
In addition, since food comes into direct contact with the hands of workers, it is necessary to pay sufficient attention to hygiene management, and there is also a problem of HACCP.
In order to solve such a problem, it has been desired to provide an apparatus capable of automatically and efficiently sorting.

Therefore, various sorting devices for automatically sorting products and waste (non-commodities) are provided (see Patent Document 1).

The apparatus disclosed in Patent Document 1 includes a edamame carrier (belt conveyor) for transporting edamame and a sorter provided on the downstream side (terminal side) of the edamame carrier.
In the edamame transport body, a plurality of transport guides protruding in the edamame transport direction are juxtaposed to form a predetermined gap (called a first gap), and in this first gap, a plurality of beans are firmly placed in the sheath. The interval is such that the green soybeans (commodity) containing the above can be transported in a fitted state. Therefore, a product (commodity) in which a plurality of beans are firmly contained in the sheath is fitted in the first gap and transported to the downstream side, but only a sheath containing no beans (commodity). The non-commodity) is not fitted in the first gap, but falls downward from the first gap and is collected.
In addition, short-length products (non-commercial products) that do not fall from this first gap but contain only one bean in the sheath are transported to the downstream side, but between the edamame carrier and the sorter. It is configured to fall downward from the second gap formed in the above and be collected.

However, in the case of such prior art, edamame or the like may be fitted exactly in the first gap, and the edamame continues to rotate together with the edamame carrier while the edamame is fitted in the first gap. There is a risk of inconvenience, and depending on the frequency, it is necessary to remove the pinched green soybeans, and the work must be stopped each time, resulting in a decrease in work efficiency. Further, depending on the size of the leaves, there is a risk that the leaves may get over the second gap and be collected together with the product.
In addition, there are some that use wind pressure to remove only the pods and leaves (see Patent Document 2), but this causes a large amount of pods and leaves to be scattered on the floor, which takes time and effort for cleaning. It is not preferable because it hangs extra.

Further, there is also provided a device that automatically sorts products and non-products transported on a belt conveyor via a color sensor, an image discrimination sensor, or the like. However, such a device has an inconvenience that the price of the entire device is increased because it has various sensors and a sorting mechanism that collects and operates in response to a signal from the sensor.

Jitsufuku No. 4-6859 Japanese Unexamined Patent Publication No. 2001-239215

The present invention has been made to solve such a problem, and an object of the present invention is to provide a sorting device capable of efficiently sorting commodities and non-commodities at low cost by utilizing an intake action. It is in.

In order to achieve such an object, the first invention presents the first pulley arranged on the upstream side and the second pulley arranged on the downstream side.
A transport device including a transport belt that is rotatably distributed between the first pulley and the second pulley in an endless manner, and a product and a non-commodity transported by the transport device are provided. It is a sorting device that sorts
The transport belt is configured to be able to ventilate from the front surface side to the back surface side, which is the transport surface.
The second pulley is configured so that the side peripheral surface in contact with the transport belt can be ventilated.
The second pulley faces a suction port that performs a suction action via the second pulley on the transport surface of the folded region on the downstream side of the transport belt that is in contact with the second pulley by the intake operation of the intake device. It is a sorting device characterized by being equipped with.

According to the present invention, it has been possible to provide a sorting device capable of efficiently sorting products and non-commodities at low cost by utilizing the intake action.

It is a schematic diagram which shows one Embodiment of the sorting apparatus of this invention, (a) is a schematic plan view, (b) is a schematic front view, (c) is a schematic side view. (A) is a schematic plan view of the transport device, and (b) is a schematic front view. In a partially enlarged schematic side view of the transport device viewed from the downstream side, (a) partially indicates that the transport belt is ventilable, and (b) partially indicates that the second pulley is ventilable. Shown. A partially enlarged schematic perspective view of the transfer device as viewed from the downstream side, (a) shows a state in which the transfer belt is removed, and (b) shows a state in which the transfer belt is provided. It is a schematic perspective view which shows a brackish water separation box and a blower. (A) is a schematic side view of the vertical section of the brackish water separation box, and (b) is a schematic front view of the vertical section. In the schematic perspective view of the exhaust muffling box, the flow of air sent from the blower is shown by an arrow and the box part is shown by a virtual line. (A) is a schematic perspective view of the exhaust muffling box, the direction of air suction from the air-water separation box is indicated by an arrow and the box portion is indicated by a virtual line, and (b) is from the direction indicated by the arrow in (a). In the schematic plan view of the exhaust muffling box seen, the box part is shown by a virtual line. It is a schematic perspective view which shows disassembled the component parts in an exhaust muffling box. It is a schematic explanatory drawing which expands and shows the sorting state of the product and non-commodity by the sorting apparatus of this invention.

Hereinafter, an embodiment of the sorting device of the present invention will be described. In this embodiment, edamame is assumed as an example of the food (commodity) to be sorted, and the edamame (commodity) and the beans contained in the sheath are only one, or the beans fall from the sheath. An embodiment of the present invention will be described below as an embodiment of the present invention, which comprises a edamame sorting apparatus that sorts edamame soybeans that have been removed or scraps (non-commodities) that cannot be shipped as commercial products such as branches, leaves, and stems.
It should be noted that the present embodiment is merely an example of the present invention and is not construed as being limited thereto, and the design can be changed within the scope of the present invention.
In addition to the green soybeans described in the present embodiment, the products to be sorted by the sorting apparatus of the present invention include all kinds of green soybeans such as green peas, green beans, green beans, broad beans, and leaves, branches, or garbage. It goes without saying that other foods (vegetables) that may be mixed and brought in are also targeted, and various foods are targeted within the scope of the present invention.

In the present embodiment, an example of an edamame sorting device configured to include a transport device 1 rotatably arranged from the upstream side to the downstream side and an intake device 27 for applying a suction action to the transport device 1. Shown.
In the present invention, the upstream side means the left side in FIGS. 1 (a) (b) and 2 (a) (b), and the downstream side means the left side in FIGS. 1 (a) (b) and 2 (b). (A) Refers to the right side in (b). Further, in FIGS. 1 and 2, the arrow R1 indicates the rotation direction of the transport belt 17.

The transport device 1 is rotatably supported by a gantry 3, and has a first pulley (drive pulley) 5 arranged on the upstream side, a second pulley (driven pulley) 11 arranged on the downstream side at the end, and a second pulley. It is composed of a transport belt 17 that is hung endlessly between the one pulley 5 and the second pulley 11.
The first pulley 5 employs a motor pulley. The first pulley 5 may be in the form of being communicated with the power source via a belt, and the design can be changed within the scope of the present invention.
In the present embodiment, the tensioner burry 7 is provided so as to be movable in the vertical direction and fixed at a predetermined position in order to apply a predetermined tension to the transport belt 17. In the figure, 9 is a snap pulley.

The second pulley 11 is configured such that the cylindrical side peripheral surface (shell) 13 in contact with the transport belt 17 can be ventilated. In the present embodiment, a net pulley is adopted in which the entire area of the peripheral surface 13 on the cylindrical side is formed in a mesh shape. The size and shape of the mesh 15 of the second pulley 11 may be opened to such an extent that air can be ventilated, but in the present embodiment, it is wider than the mesh 21 of the transport belt 17. Therefore, it is possible to apply a strong suction action to the transport surface 19 located in the folded region A3 of the transport belt 17 in contact with the second pulley 11.

The transport belt 17 is configured in a mesh shape so that the entire belt can be ventilated from the front surface side to the back surface side, which is the transport surface 19.
The size and shape of the mesh 21 of the transport belt 17 need only be open to the extent that air can be ventilated, and fine leaf debris (part of leaves, etc.) and branch debris (part of branches, etc.) are sucked in. The size should not be large.

In the second pulley 11, the intake device 27 applies a suction action to the transfer surface 19 located in the folded region A3 of the transfer belt 17 in contact with the second pulley 11 via the second pulley 11 by the intake operation of the intake device 27. Suction ports 31 are provided facing each other.

In the present embodiment, a sorting portion 23 is provided at a position lower than the folded area A3 in the vertical direction by providing a predetermined gap L1 at the tip of the folded area A3 on the downstream side of the transport device 1. ..

The sorting unit 23 has a gap L1 with the folded-back region A3, and this gap L1 has a size through which non-commodities can pass.
In the case of this embodiment, the sorting unit 23 is a third pulley (motor pulley) that rotates in the direction opposite to the second pulley 11 (counterclockwise direction).
In FIGS. 1 and 2, the arrow R2 indicates the rotation direction of the third pulley 23.
In the present embodiment, the third pulley 23 employs a motor pulley having a diameter smaller than that of the first pulley 5 and the second pulley 11 (see FIGS. 1 to 4).

Large branches, stems, etc. may not be attracted to the transport belt 17 and may be released to the green soybean collection area (commodity collection area) A1.
According to the present embodiment, since the third pulley 23 as the sorting portion is provided at the tip of the folded-back region A3, the branches and stems released from the downstream (termination) side of the transport belt 17 collide with the third pulley 23. Or hang (see Figure 10).
Since the third pulley 23 is rotating in the direction indicated by the arrow R2, the third pulley 23 collides with or involves hanging branches or stems, and an empty pod or beans contained in the pod are present. A non-commodity collection conveyor 25 provided in the non-commodity collection area A2, which is discharged to the non-commodity collection area A2 together with non-commodities such as only one item or a bean that has fallen from the pod, or not shown It is collected in the collection box.

The intake device 27 has a first vacuum duct (inner duct) 29 arranged so as to face the second pulley 11 and the suction port 31, and a second vacuum duct (outer duct) attached in communication with the first vacuum duct 29. ) 37, a steam separation box 49 attached in communication with the second vacuum duct 37, and an exhaust muffling box 69 attached in communication with the steam separation box 49.

The first vacuum duct 29 is provided inside the transport belt 17 on the gantry 3, and the suction port 31 at the tip thereof is brought close to the second pulley 11 so as not to come into contact with the second pulley 11 (see FIGS. 2 and 4). .).

In the first vacuum duct 29, a communication port attached in communication with the second vacuum duct 37 is provided facing the suction port 31 toward the first pulley 5 direction, and between the suction port 31 and the communication port 33. A duct main body 35 for communication is integrally provided (see FIG. 2).

The suction port 31 has an arcuate shape with a diameter slightly larger than that of the second pulley 11, and is opened with substantially the same length as the cylindrical peripheral surface 13 of the second pulley 11. That is, the intake operation is applied to substantially the entire length direction of the cylindrical side peripheral surface 13 of the second pulley 11 facing each other (see FIGS. 2 and 4).

The communication port 33 is formed in a cylindrical shape having a diameter larger than that of the suction port 31, and the duct main body 35 is formed in a rectangular shape having the same width as the suction port 31 (see FIG. 2).

The second vacuum duct 37 has a cylindrical first mounting port 39 that is continuously attached to the communication port 33 of the first vacuum duct 29, and a first cylindrical portion that is provided in a horizontal direction from the first mounting port 39. 41, a second cylindrical portion 43 provided vertically downward from the first cylindrical portion 41, a third cylindrical portion 45 provided in a downwardly inclined manner from the second cylindrical portion 43, and a third. At the end of the cylindrical portion 45, it is composed of a cylindrical second mounting port 47 that is continuously attached to the mounting duct 61 of the air-water separation box 49 (see FIG. 1).
The second vacuum duct 37 is not limited to the configuration of the present embodiment as long as it is continuously connected from the first vacuum duct 29 to the air-water separation box 49, and is within the scope of the present invention. The design can be changed.

The air-water separation box 49 is provided at the box main body 51 formed in a hollow vertically long cubic shape, a plurality of baffle plates 53, 55, 57 provided in the box main body 51, and the lowermost end in the box main body 51. It is composed of an inclined floor surface 59 (see FIGS. 1, 5 and 6).

A mounting duct 61 that is vertically attached to the second mounting port 47 of the second vacuum duct 37 is provided at an arbitrary position on the side wall surface 63 that is vertically higher than the inclined floor surface 59 (FIGS. 5 and 5). See FIG. 6).
The mounting duct 61 protrudes from the side wall surface 63 in an inclined manner, and the connection port at the tip is opened in a cylindrical shape. The mounting duct 61 communicates with the side wall surface 63.

At an arbitrary position on the inner surface of the uppermost end of the side wall surface 63, a blower connection duct 65 connected to the blower 73 in the exhaust muffling box 69 is provided so as to communicate with each other in the horizontal direction. The blower connection duct 65 projects in a cylindrical shape, and the connection port 67 at the tip thereof is opened in a cylindrical shape (see FIG. 6A).

Inside the box, three baffle plates 53, 55, 57 formed to be about half the horizontal width of the box are spaced vertically at a predetermined distance, and are alternately placed on opposite inner walls. It is installed.
The baffle plates 53, 55, 57 are designed so that their respective tip portions 53a, 55a, 57a overlap in the vertical direction, thereby blocking the straight flow of air in the vertical direction and increasing moisture and dust with the air. Is blocking the rise. The arrows shown in FIGS. 5 and 6 schematically show the flow of air.

In the present embodiment, the first baffle plate 53 is provided near the mounting duct 61, the second baffle plate 55 is provided above the first baffle plate 53, and the third baffle plate 57 is further above the mounting duct 61 (FIGS. 5 and 5). See 6.).

The first baffle plate 53 is provided in close contact with the side wall surface 63a provided with the mounting duct 61 and the side wall surfaces 63b and 63c on both sides thereof, and is provided between the side wall surface 63d provided with the blower connecting duct 65. A gap L2 is formed.
The second baffle plate 55 is provided in close contact with the side wall surface 63d provided with the blower connecting duct 65 and the side wall surfaces 63b and 63c on both sides thereof, and is provided between the side wall surface 63a provided with the mounting duct 61. A gap L3 is formed.
The third baffle plate 57 is provided in close contact with the side wall surface 63a provided with the mounting duct 61 and the box inner wall surfaces 63b and 63c on both sides thereof, and is provided between the side wall surface 63d provided with the blower connecting duct 65. A gap L4 is formed in the space.

By alternately attaching the three baffle plates 53, 55, 57 to the side wall surfaces 63a, 63d facing each other in this way, a meandering air passage (meandering air passage) is formed in the box. (See FIGS. 5 and 6).

Further, in the present embodiment, the filter cassette 67 is provided in the uppermost region in the box. The filter cassette 67 is for removing moisture, dust, and the like, and is inside the box so that no gap is formed between the side wall surfaces 63a and 63d in front of the opening provided with the blower connection dust 65. It is provided in an inclined shape so as to block the air passage of the blower 73 to prevent moisture, dust, etc. from being sent to the blower 73.

That is, for example, when moisture is attached to what is carried in after cleaning and sent out on the transport belt 17 (including the branches, stems, leaves, etc. which are not commercial products together with the commercial edible beans), or is transported. When the belt 17 is washed with water, water is sucked together with air through the first vacuum duct 29 and the second vacuum duct 37 and sent into the air-water separation box 49.
Since the air sent into the air-water separation box 49 rises while colliding with the baffle plates 53, 55, 57, the water sucked up with the air is sucked into the blower 73 before being sucked into the baffle plates 53. Moisture falls down by colliding with, 55, 57.
Then, in the lowermost end region (the region where the inclined floor surface 59 is located) in the box, a water collecting portion (not shown) for collecting the dropped water is provided.
The number of baffle plates arranged is arbitrary, and the design can be arbitrarily changed from one to a plurality of baffle plates.

The exhaust muffling box 69 is provided by stacking a hollow upper block 75 that is arranged side by side with the blower chamber 71, a hollow middle block 79 that is stacked under the upper block 75, and a hollow middle block 79 that is stacked under the middle block 79. The hollow lower block 83 and the hollow lower block 83 are integrally formed in a three-tiered state in the vertical direction, and the whole has a vertically long cube shape (see FIGS. 7 and 8).
The upper block 75, the middle block 79, and the lower block 83 are each formed in an independent soundproof space with a soundproof material.
The blower chamber 71 is formed by using a soundproof material, and the blower 73 incorporated in the present embodiment is a turbo blower and is controlled by an inverter.

The upper block 75 and the lower block 83, and the lower block 83 and the middle block 79 communicate with each other via the communication cylinders 77, 81, and 85, respectively, and the air blown from the blower chamber 73 is discharged from the communication cylinder. It is configured to pass through each block via 77, 81, and 85, and finally be exhausted to the outside air side.
For example, in the present embodiment, the first communication cylinder portion 77 communicating from the upper block 75 to the lower block 83, and the second communication cylinder portion 81 communicating from the lower block 83 to the middle block 79. It is provided with a third communication cylinder portion 85 that communicates with the outside air from the inside of the middle block 79 through the floor surface of the lower block 83. That is, the upper block 75 and the middle block 79 do not communicate with each other. Also,

The first series cylinder portion 77 has a length that can be arranged in the upper block 75 and the lower block 83, and has an upper end side region 77a and a lower end side region 77b, and an upper end side region 77a and a lower end side region 77b thereof. It is formed in a cylindrical shape integrally formed with the intermediate region 77c existing between the two.
The upper end side region 77a is located in the upper block 75, the lower end side region 77b is located in the lower block 83, and the intermediate region 77c is arranged in the middle block 79. The intermediate region 77c is made of, for example, punching metal in which a large number of through holes 77d are bored, and the upper end side region 77a and the lower end side region 77b do not have through holes (see FIG. 9). A soundproofing material is provided on the outer periphery of the intermediate region 77c.

The second connecting cylinder portion 81 has a length that can be arranged in the middle block 79 and the lower block 83, and is formed in a short cylinder having no through hole (see FIG. 9).

The third communication cylinder portion 85 has a length that can be arranged from the inside of the middle block 79 to the inside of the lower block 83 from the floor surface of the lower block 83 to the outside air side, and is an intermediate region that passes through the lower block 83. The 85c is made of a punching metal having a through hole 85d bored, and has no through hole in the upper end side region 85a located in the middle block 79 and the lower end side region 85b protruding to the outside air side (FIG. See 9.). A soundproofing material is provided on the outer periphery of the intermediate region 85c.

According to the exhaust muffling box 69 of the present embodiment, the air blown from the blower 73 into the upper block 75 collides with the inner wall of the upper block 75, and the collided air circulates in the upper block 75 to pass through the first series. It is sent into the lower block 83 via the tubular portion 77. The air sent into the lower block 83 circulates in the lower block 83 and is sent into the middle block 79 via the second connecting tube portion 81. The air sent into the middle block 79 circulates in the middle block 79 and is exhausted from the floor surface of the lower block 83 to the outside air side via the third communication cylinder portion 85.
In FIG. 7, the “black-filled arrow” indicates the flow of air that blows out from the blower 73 into the upper block 75, circulates in the upper block 75, and is sent out to the first series tube portion 77. The "pear-skin arrow" indicates the flow of air that is sent from the first series tube portion 77 into the lower block 83, circulates in the lower block 83, and is sent out to the second continuous tube portion 81. The “white arrow” indicates the flow of air that is sent from the second connecting cylinder portion 81 into the middle block 79, circulates in the middle block 79, and is sent out to the outside air side through the third connecting cylinder portion 85. There is.

Therefore, according to the exhaust muffling box 69 of the present embodiment, the entire blocks 75, 79, and 83 are formed of the soundproofing material, and the air blown from the blower 73 is inside the blocks 75, 79, and 83. It circulates while colliding with the inner wall, and is formed of punching metal while being sent into other blocks via the communication cylinders 77, 81, 85 and finally to the outside air side. At the same time, since it passes through the communication cylinder part (first series passage part 77, third communication cylinder part 85) provided with a soundproof material on the outer circumference, the sound disappears during the transmission. The muffling effect is high and the working environment can be improved. In addition, the wind that finally blows out to the outside air side is dispersed and becomes a breeze, which further improves the working environment.

In the present embodiment, an embodiment in which independent upper block 75, middle block 79, and lower block 83 are superposed will be described, but a single vertically long box is formed into a plurality of independent regions. At the same time, there may be one that is configured to communicate between predetermined regions, and the design can be changed within the scope of the present invention.

An operation example of the sorting device of this embodiment will be described.
First, when the switch of the blower 73 is turned on, air is blown from the blower 73 into the upper block 75 of the exhaust muffling box 69.
Then, the air-water separation box 49, the second vacuum duct (outer duct) 37, and the first vacuum duct (inner duct) 29, in which one air passage is formed by the intake operation generated by the air blowing operation of the blower 73. , Air is continuously sucked from the suction port 31.

Then, the carried-in green soybeans are scattered on the transport belt 17 via a supply conveyor (not shown). At this time, the green soybeans brought in include green soybeans that contain only one bean in the sheath, beans that have fallen from the sheath, and leaves, branches, stems, garbage, etc. (non-commodity). It is in a state of being.

Green soybeans (commodities) are carried in order from the upstream side to the downstream side by the transport belt 17 together with leaves, branches, stems, garbage and the like (non-commodities).
At this time, the second pulley 11 arranged on the downstream side faces the suction port 31 of the first vacuum duct 29, and constantly exerts an intake action on the transport surface 19 located in the folded region A3 of the transport belt 17. It is given.

Therefore, the non-commodity (the one lacking beans or the one containing no beans or the light one such as a leaf) that has reached the folded region is attracted to the transport surface 19 via the second pulley 11 by the intake action. Then, when the conveyor belt 17 separates from the second pulley 11, the intake action is also lost, so that the non-commodity attracted to the conveyor surface 19 is separated from the conveyor surface 19 to prepare for the lower non-commodity collection area A2. It falls on the non-commodity collection conveyor 25.
Then, the product (a heavy product having a plurality of beans firmly contained in the sheath) is thrown out from the folded area A3 to the product collection area A1 in front of the product without being attracted to the transport surface 19, and the product is collected. It is collected by a product collection conveyor 87 or the like arranged in the area A1.
Further, branches, stems, etc. may be caught on the third pulley 23, but are caught in the non-commodity collection area A2 by the rotational operation of the third pulley 23 rotating in the direction opposite to the second pulley 11 and released. (See FIG. 10).

In this way, the suction port 31 of the intake device 27 is arranged so as to face the second pulley 11 on the terminal side, and both the second pulley 11 and the transport belt 17 are configured to be ventilated, so that the second pulley 11 can be ventilated. A product (not attracted to the transport surface 19) and a non-product (sucked to the transport surface 19) that have reached the folded-back region A2 of the arranged transport belt 17 are easily and inexpensively sorted by the intake action. be able to.

The strength of the suction force (air suction force) in the folded-back region A3 may be adjusted according to the weight of the target product.

The intake device 27 of the present embodiment has been described with the embodiment composed of the first vacuum duct 29, the second vacuum duct 37, the air / water separation box 49, and the exhaust muffling box 69, but at least the transport belt in contact with the second pulley 11 has been described. It suffices as long as the transport surface 19 of 17 can be sucked through the second pulley 11, and even if the air-water separation box 49 and the exhaust muffling box 69 are not included as components. It is within the scope of the invention and is not a limited interpretation.

The present invention can be used not only for vegetables but also for other foods as long as non-commodities and commodities can be sorted by a suction action in the second pulley region on the downstream side (termination side).

1 Conveyor device 5 First pulley 11 Second pulley 17 Conveyance belt 27 Intake device 31 Suction port

Claims (1)

The first pulley arranged on the upstream side and the second pulley arranged on the downstream side,
A transport device including a transport belt that is rotatably distributed between the first pulley and the second pulley in an endless manner, and a product and a non-commodity transported by the transport device are provided. It is a sorting device that sorts
The transport belt is configured to be able to ventilate from the front surface side to the back surface side, which is the transport surface.
The second pulley is configured so that the side peripheral surface in contact with the transport belt can be ventilated.
The second pulley faces a suction port that performs a suction action via the second pulley on the transport surface of the folded region on the downstream side of the transport belt that is in contact with the second pulley by the intake operation of the intake device. A sorting device characterized by being provided.

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