JP3975021B2 - Sorting conveyor device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a conveyor suitable for transporting small, soft and moisture-rich foods such as shirasu fish and dried radish, and in particular, easily separates these transported foods attached to the conveyor belt. It is related with the apparatus for making it.
[0002]
[Prior art]
Conventionally, the applicant previously provided a suction surface constituted by a breathable conveyor belt that moves in the vertical direction, and opened a suction port of a negative pressure chamber leading to the exhaust fan on the back surface of the suction surface, so A device that separates the fish by dropping it onto the adsorption surface, dropping a heavy fish body under its own weight, and transferring impurities such as shrimp beard, seaweed stalks, and sometimes human hair upward by a conveyor belt. Proposed (Japanese Patent Application No. 9-252869).
[0003]
[Problems to be solved by the invention]
However, since the return part of the conveyor belt is provided in the negative pressure chamber, the shirasu fish and foreign substances (contaminants) that are separated and adhere to the conveyor belt fall into the negative pressure chamber. In order to eliminate it from the inside of the room, it must be performed while the machine is stopped, and there is a problem that the operating rate of the equipment is lowered.
Also, in this type of equipment, in order to increase the processing amount per hour, it is preferable to increase the suction port and suck foreign matter over a wide area. However, when the conveyor belt passes through the front surface of the suction port, suction is performed. Since the suction belt is deformed by being sucked into the mouth, conventionally, the conveyor belt is made of a material having high rigidity. However, there is still a limit to increasing the suction mouth.
Furthermore, even if the object to be sorted is not boiled or boiled, the suction force of the conveyor belt is adjusted appropriately according to changes in the fish species, the shape of foreign matter contained therein, and the specific gravity. It became necessary to do.
[0004]
[Means for Solving the Problems]
The above-described problem includes a box-shaped frame having a negative pressure chamber communicating with the suction side of the blower, and a breathable conveyor belt supported by the frame, and one side of the negative pressure chamber The suction port is opened, and guide rollers are provided on the inner surface of the side plate provided with the suction port on the upper side and the lower side of the suction port, while being drawn out to the outside of the side plate facing the side plate provided with the suction port. A roller is provided, and a conveyor belt is wound between the guide roller and the drawing roller, and a blowout port for the pressure air directed to the back surface of the conveyor belt drawn out to the outside of the negative pressure chamber is provided. This is solved by providing a foreign object receptacle at the front of the machine.
In this case, it is preferable that a plurality of support bars for supporting the conveyor belt are provided across the suction port at the suction port.
Further, it is preferable that the negative pressure chamber is provided with an exhausting means for exhausting the indoor air to the outside, and an adjusting means for adjusting the exhausted wind force to be larger or smaller.
Furthermore, it is preferable to provide a vibration means for vibrating the conveyor belt in the surface direction on the back surface of the suction surface.
[0005]
[Action]
[Claim 1] The suction port provided in the box-shaped frame is covered by a conveyor belt supported by upper and lower guide rollers. As a result, negative pressure in the negative pressure chamber acts on the food to be sorted supplied to the suction port through the conveyor belt. Among the foods to be selected, foods with a high bulk specific gravity (heavy food) fall downward due to their own weight despite the negative pressure action, and foreign substances with a low bulk specific gravity (light food) are affected by the negative pressure action. Adsorbed on the outer surface of the conveyor belt. As a result, food and foreign substances are separated. When the conveyor belt is bent backward by the upper roller while foreign matter is adhered and pulled out of the negative pressure chamber by the drawing roller, the negative pressure action on the foreign matter disappears. Thereafter, the foreign matter is blown off from the conveyor belt by the airflow ejected from the blowout port, and is received by the other foreign matter receiver.
[Claim 2] Although the conveyor belt is subjected to the action of atmospheric pressure on the front surface and negative pressure on the back surface, it is supported by a plurality of support rods, and the gap between the suction port and the conveyor belt is kept to a minimum.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
In FIG. 1, reference numeral 10 denotes a sorting conveyor apparatus that is an embodiment of the present invention. The sorting conveyor device 10 includes a supply conveyor 11, a sorting conveyor 20, a take-out conveyor 12, and the like. The supply conveyor 11 transfers the boiled and dried food that has been picked up to the sorting conveyor 20 that separates the product m and the foreign matter c. The takeout conveyor 12 is provided to take out the food m from which the foreign matter c has been removed. The supply conveyor 11 and the take-out conveyor 12 have net-like transfer belts 11a and 12a made of thin synthetic resin wires having a diameter of about 0.5 mm, and the sorting belt 21 has the same belt. The transfer belts 11a and 12a and the sorting belt 21 have air permeability between the front and back sides.
[0007]
As shown in FIG. 2, the sorting conveyor 20 has a substantially cubic box shape in which a part of a box-shaped frame 31 forms a negative pressure chamber 30, and the frame of the take-out conveyor 12 is constituted by a front leg 13 and a rear leg 14. 12b is provided to separate and remove foreign substances c that degrade the quality of the food to be selected f, such as small shrimp and shrimp mushrooms mixed in the boiled and dried food f. G is an electric motor with a speed reducer for driving the transfer belt 12a.
[0008]
The box-shaped frame 31 has a suction port 32 on the front side facing the supply conveyor 11, and air exhaust ports 33 and 33 are provided on both side surfaces. The air exhaust port 33 has a lid 34 that is supported on the frame 31 by a pivot shaft P so as to be openable and closable, and a blower 35 is attached to the lid 34. Therefore, when the blower 35 is operated, the air in the box-shaped frame 31 is discharged and the inside is maintained at a negative pressure. Further, the inside can be cleaned by opening the lid 34.
[0009]
The box-shaped frame 31 can be brought into a state of being tilted backward with the suction port 32 facing obliquely upward as shown in FIG. 5 by interposing a connecting rod 18 between the front leg 13 or By inserting the connecting rod 18 between the rear leg 14 and the rear leg 14, as shown in FIG.
[0010]
Reference numeral 15 denotes a first air nozzle provided at the rear end of the supply conveyor 11, and reference numeral 16 denotes a second air nozzle provided at the front end of the take-out conveyor 12. Both the air nozzles 15 and 16 are opened toward the back surfaces of the transfer belts 11a and 12a, and are opened toward the suction port 32 provided in the sorting conveyor 20 through the air nozzles 15 and 16. F is a blower communicating with both air nozzles 15 and 16 through an air duct D. Reference numeral 17 denotes a scattering prevention net provided to cover the side of the sorting conveyor 20.
[0011]
As described above, the sashimi f sent by the supply conveyor 11 falls from the rear end of the supply conveyor 11 onto the take-out conveyor 12 and is sorted by the air blown from the first air nozzle 15. Blowed away. Further, the remaining portion that has dropped to the front end of the takeout conveyor 12 is blown up by the second air nozzle 16 provided in the takeout conveyor 12 toward the suction port 32 of the sorting conveyor 20 located above.
[0012]
The blower 35 is provided with adjusting means (not shown) for adjusting the exhaust wind force to a larger or smaller size as required. The adjusting means is configured as, for example, an inverter power source for driving the blower 35, and by controlling the frequency of the alternating current that drives the blower 35, the rotation speed thereof is changed to a large or small value, and the inside of the negative pressure chamber 30 is controlled. It is configured to adjust the pressure.
[0013]
The sorting belt 21 constituting the sorting conveyor 20 includes two guide rollers 37 disposed on the upper and lower sides of the suction port 32 and two guide rollers 37 disposed on the rear side of the box-shaped frame 31. The winding roller 38 is wound around. The drawing roller 38 is driven by a motor 41 with a speed reducer via a drive chain 39. The electric motor 41 is driven by using an inverter as a power source as required, and is configured to be able to change its rotation speed.
[0014]
The sorting conveyor 20 is provided with a blow-out port 22 of pressurized air that is positioned in the vicinity of the drawing roller 38 and is directed to the back surface of the sorting belt 21, and is provided with a box-shaped foreign material receptacle 23 having an upper surface opened at the tip. . Therefore, the foreign substance c adhering to the outer surface of the sorting belt 21 is blown off and removed by the pressurized air blown out from the outlet 22. The blown-out foreign matter enters the front foreign matter receptacle 23 so as not to be scattered around.
[0015]
A large number of support bars 42, 42 extending in the vertical direction are provided inside the suction port 32, and the support bar 42 includes a sorting belt 21 that moves between the upper and lower guide rollers 37, 37 in a box-shaped frame 31. It is prevented from being pulled in by the action of negative pressure. Further, a horizontal shaft 45 is rotatably mounted just inside the support rod 42, and when the horizontal shaft 45 rotates, a striking plate 46 made of a strip-shaped plate material attached to the horizontal shaft 45 rotates. The sorting belt 21 supported by the support bar is vibrated in the surface direction by hitting the inner surface of the support bar 42. Therefore, even if the sorting belt 21 is clogged by a part of the sprayed fried dried f, it is eliminated by vibration.
[0016]
When the sorting conveyor device 10 according to the embodiment configured as described above is operated and the dried food f to be sorted is transferred by the supply conveyor 11, the dried air f is a first air nozzle 15 and a second air nozzle. 16 is blown off toward the suction port 32 of the negative pressure chamber 30 and sucked to the outer surface of the sorting belt 21 of the sorting conveyor 20 disposed on the inner surface of the suction port 32.
[0017]
Due to the negative pressure in the negative pressure chamber 30 acting through the mesh, foreign matter having a small bulk specific gravity (light) is adsorbed on the outer surface of the sorting belt 21, and the large (heavy) dried f fish body is taken out under its own weight. Drop onto the conveyor 12. When the fish body of boiled dried f drops, foreign matter adsorbed on the mesh may be scraped off, so that the size of the negative pressure in the negative pressure chamber 30 can be adjusted according to the type of food to be sorted, It is necessary and adjustable to change the inclination angle of the frame 31.
[0018]
【The invention's effect】
According to this invention, the foreign matter adsorbed on the surface of the conveyor belt is drawn out of the negative pressure chamber with a conveyor belt, from being eliminated by gas blown out from the blowing port outside the negative pressure chamber, to be sorted food Maintenance work such as removal and cleaning of foreign matter separated from the product is easy. In addition, the conveyor belt receives the negative pressure in the negative pressure chamber at the portion facing the suction port, but is prevented from being drawn into the negative pressure chamber because the back surface is supported by the support rod. There is a Do any effect.
[Brief description of the drawings]
FIG. 1 is a side view of a sorting conveyor device according to an embodiment of the present invention.
FIG. 2 is an enlarged cross-sectional view of the main part.
FIG. 3 is a plan view of FIG. 2 with a part broken away.
4 is an arrow IV view in FIG. 3;
FIG. 5 is a cross-sectional view corresponding to FIG. 2 illustrating an example of a posture during operation.
FIG. 6 is a cross-sectional view corresponding to FIG. 2, illustrating another example of the posture during operation.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Sorting conveyor apparatus 11 ... Supply conveyor 11a ... Transfer belt 12 ... Extraction conveyor 12a ... Transfer belt 12b ... Frame 13 ... Front leg 14 ... Rear leg 15 ··· First air nozzle 16 ··· Second air nozzle 17 ··· Scatter prevention net 18 ··· Connection rod 20 ··· Sorting conveyor 21 ··· Sorting belt 22 ··· Air outlet 23 ··· Foreign object receptacle 30 ··· Negative pressure chamber 31 ··· Box-shaped frame 32 ··· Suction port 33 ··· Air outlet 34 ··· Lid Body 35 ... Blower 37 ... Guiding roller 38 ... Drawer roller 39 ... Drive chain 41 ... Electric motor 42 with reduction gear ... Support rod 45 ... Horizontal axis 46 ... Tapping plate D ... Air duct F ... Blower G ... Reducer-equipped motor P · · · · pivot axis c · · · · foreign object f · · · · be sorted food (anchovy)
m ・ ・ ・ ・ Product

Claims (1)

It has a box-shaped frame that communicates with the suction side of the blower and forms a negative pressure chamber, and a breathable conveyor belt that is supported by the frame, and is sucked to one side of the side plate that constitutes the negative pressure chamber A plurality of support bars for opening the mouth and supporting the conveyor belt at the suction port are provided across the suction port, and on the inner surface of the side plate provided with the suction port, the upper side and the lower side of the suction port A guide roller is provided on the outer side of the side plate facing the side plate provided with the suction port, and a conveyor belt is wound between the guide roller and the draw roller and bent backward by the upper roller. is, the drawer outward of the negative pressure chamber by pulling rollers, its withdrawn the outlet of gas directed to the rear surface of the conveyor belt is provided with, the air outlet formed by providing a foreign matter receiving the other party of the sorting conveyor In addition, the food to be sorted mixed with foreign matter is supplied to the vicinity of the suction port by the supply conveyor, the foreign matter having a small bulk specific gravity is sucked into the suction port, and provided near the suction port and below the box-shaped frame. The sorting conveyor apparatus, wherein the food to be sorted moved from the supply conveyor onto the transfer belt is transferred by a transfer belt .

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