JP2000229267A - Sorting conveyor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a device by which foreign matters mixed in soft and light food such as dried small sardines and dried strips of radish are effectively removed and the removed foreign matters can be easily taken out. SOLUTION: A suction port 32 is opened on one side of a negative pressure chamber 30 communicating with a fan, and on the rear of the suction port, a gas permeable belt conveyor 12a moving between two rollers arranged in the vertical direction is arranged. The return side of the conveyor belt 12a is wound on a draw-out roller provided on the other side of the negative pressure chamber 30, and near the draw-out roller, a blow-off port 22 of pressure air directed to the rear of the conveyor belt is arranged and in front of it, a foreign matter receiver 23 is arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor suitable for conveying small, soft and watery foods, such as raw materials for shirasu fish and dried radish, and more particularly to those conveyors attached to a conveyor belt. The present invention relates to an apparatus for easily separating conveyed food.

[0002]

2. Description of the Related Art Heretofore, the applicant has previously provided a suction surface constituted by a permeable conveyor belt moving vertically, and opened a suction port of a negative pressure chamber leading to a blower at the back of the suction surface. The dried fish is dropped on the adsorption surface, the heavy fish is dropped by its own weight, and the contaminants such as prawns, mustaches, seaweed stalks, and sometimes human hair are transported upward by a conveyor belt. Was proposed (Japanese Patent Application No. 9-252869).

[0003]

However, since the return portion of the conveyor belt is provided in the negative pressure chamber, foreign matter (contaminants) separated from the shirasu fish and adhered to the conveyor belt is generated in the negative pressure chamber. In order to remove it from the inside of the negative pressure chamber, it must be performed while the machine is stopped, which causes a problem that the operation rate of the equipment is reduced.
In addition, in order to increase the amount of processing per unit of time, it is preferable to increase the suction port to suction foreign substances in a large area.However, when the conveyor belt passes through the front surface of the suction port, suction is performed. Conventionally, the belt is deformed by being sucked into the mouth, so that the conveyor belt is made of a material having high rigidity. However, there is a limit to increasing the size of the suction port. Furthermore, even if the selected material is not boiled or boiled, the suction power of the conveyor belt is appropriately adjusted according to the fish species, the shape of the foreign matter contained therein, and the change in specific gravity. Need to be done.

[0004]

An object of the present invention is to provide a box-shaped frame having a negative pressure chamber whose interior communicates with the suction side of a blower, and a permeable conveyor belt supported by the frame. Opening a suction port on one side of the negative pressure chamber,
On the inner surface of the side plate provided with the suction port, guide rollers are provided above and below the suction port, while a draw-out roller is provided on the outer side of the side plate facing the side plate provided with the suction port, and these guide rollers are provided. The conveyor belt is wound between the conveyor belt and the draw-out roller, and an outlet for compressed air directed toward the back surface of the conveyor belt drawn out of the negative pressure chamber is provided, and a foreign object receiver is provided at the end of the outlet. It is solved by. In this case, it is preferable that a plurality of support rods for supporting a conveyor belt are provided in the suction port so as to cross the suction port. Further, it is preferable that the negative pressure chamber is provided with an exhaust means for exhausting indoor air to the outside of the room, and an adjusting means for adjusting the exhaust wind to a large or small size. Further, it is preferable to provide a vibrating means for vibrating the conveyor belt in the surface direction on the back surface of the suction surface.

[0005]

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, a negative pressure in the negative pressure chamber acts on the sorted food supplied to the suction port through the conveyor belt. Among the sorted foods, foods having a large bulk specific gravity (heavy foods) fall downward by their own weight despite the action of the negative pressure, and foreign substances having a small bulk specific gravity (light foods) receive the action of the negative pressure. Adsorbed on the outer surface of the conveyor belt. As a result, the food and the foreign matter are separated. The conveyor belt is bent backward by the upper roller while foreign matter is adhered, and is drawn out of the negative pressure chamber by the drawer roller.
The effect of the negative pressure on the foreign matter disappears. After that, the foreign matter is blown off from the conveyor belt by the airflow ejected from the outlet, and is received by the foreign matter receiver on the other side. [Claim 2] The conveyor belt receives an atmospheric pressure on the front surface and a negative pressure on the back surface. However, the conveyor belt is supported by a plurality of support rods, and the gap between the suction port and the conveyor belt is kept to a minimum. [Claim 3] By changing the amount of air exhausted by the exhaust means, it is possible to adjust the level of separation of foreign matters and products adsorbed on the surface of the conveyor belt. [Claim 4] When the conveyor belt vibrates in the surface direction, products or foreign substances clogged in the mesh of the conveyor belt come off.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 10 denotes a sorting conveyor device according to 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 prepares the product m and the foreign substance c by using the freshly boiled and dried chicken, which is the sorted food.
And transferred to the sorting conveyor 20 which is separated. The take-out 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 1
Reference numeral 2 has net-like transfer belts 11a and 12a made of thin synthetic resin wires having a diameter of about 0.5 mm, and the selection belt 21 has the same belt. These transfer belts 11a, 12
a and the selection belt 21 have air permeability between the front and back.

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 take-out conveyor is constituted by a front leg 13 and a rear leg 14. And foreign matter c, such as small shrimp and shrimp beard, which is supported by the twelve frames 12b and is mixed with the boiled dried food f, such as shrimp and shrimp.
Is provided for separating and removing the G is an electric motor with a speed reducer for driving the transfer belt 12a.

The box-shaped frame 31 has a suction port 32 on the front side facing the supply conveyor 11, and has exhaust ports 33 on both sides. The exhaust port 33 has a lid 34 supported by the pivot 31 on the frame 31 so as to be openable and closable.
Is attached. 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.

The box-shaped frame 31 is connected to the front legs 13.
By interposing the connecting rod 18 between the suction port 32 and the rear leg 14, as shown in FIG. By intervening, it can be brought forward as shown in FIG.

Reference numeral 15 denotes a first air nozzle provided at the rear end of the supply conveyor 11, and reference numeral 16 denotes a take-out conveyor 12.
Is a second air nozzle provided at the front end of the second air nozzle. The two air nozzles 15 and 16 open toward the back surfaces of the transfer belts 11a and 12a, and open through the suction ports 32 provided in the sorting conveyor 20 through the air nozzles. F is a blower communicating with both air nozzles 15 and 16 via an air duct D. Reference numeral 17 denotes a scattering prevention net provided to cover the side of the sorting conveyor 20.

As described above, the boiled dried f sent from the supply conveyor 11 is taken out from the rear end of the supply conveyor 11 and falls on the conveyor 12 while the first dried f is being dried.
The air is blown out toward the sorting conveyor 20 by the air blown out from the air nozzle 15. Also, take-out conveyor 1
2 is blown up toward the suction port 32 of the sorting conveyor 20 located above by the second air nozzle 16 provided on the take-out conveyor 12.

The blower 35 has adjusting means (not shown) for adjusting the amount of exhaust air to be large or small as necessary.
Is provided. The adjusting means is configured as, for example, an inverter power supply for driving the blower 35,
By controlling the frequency of the alternating current that drives the
The pressure in the negative pressure chamber 30 is adjusted by varying the rotation speed.

The sorting conveyor 21 comprises two sorting belts 21 provided vertically above and below the suction port 32 and two guides arranged on the rear side of the box-shaped frame 31. It is wound between a roller 37 and a pull-out roller 38. The draw-out 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 necessary, and is configured to be able to change its rotation speed.

The sorting conveyor 20 is provided with a compressed air outlet 22 which is located in the vicinity of the draw-out roller 38 and is directed toward the back surface of the sorting belt 21, and a box-shaped foreign matter receiver 23 having an open upper surface is provided in front of the outlet 22. Have been. Therefore, the foreign matter c adhering to the outer surface of the sorting belt 21 is blown off and removed by the compressed air blown out from the outlet 22. The blown foreign matter enters the foreign matter receiver 23 on the other side and is prevented from scattering around.

A large number of support rods 42, 42 extending in the vertical direction are provided inside the suction port 32. The support rod 42 is a box-shaped sorting belt 21 that moves between the upper and lower guide rollers 37, 37. The negative pressure in the frame 31 prevents it from being drawn inward. 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 attached to the horizontal shaft 45 rotates, By hitting the inner surface of the support bar 42, the sorting belt 21 supported by the support bar is vibrated in the surface direction. Therefore, even if the sorting belt 21 is clogged by a part of the spray-dried fried f, it is eliminated by the vibration.

When the sorting conveyor device 10 of the embodiment configured as described above is operated and the food to be sorted, boiled f, is transferred by the supply conveyor 11, the boiled f is fed to the first air nozzle 15, 2. The air is blown off by the air nozzle 16 toward the suction port 32 of the negative pressure chamber 30, and the suction port 32
Is suctioned to the outer surface of the sorting belt 21 of the sorting conveyor 20 disposed on the inner surface of the sheet.

On the outer surface of the sorting belt 21, foreign matter having a small bulk specific gravity (light) is adsorbed by the negative pressure in the negative pressure chamber 30 acting through the mesh, and the large (heavy) boiled dried f
Fall on the take-out conveyor 12 below by its own weight. When the fish body of the dried fish f falls, foreign substances adsorbed on the mesh may be scraped off, so that the magnitude of the negative pressure in the negative pressure chamber 30 is adjusted depending on the type of the selected food,
It is necessary and adjustable to change the inclination angle of the box-shaped frame 31 and it is configured to be possible.

[0018]

According to the first aspect of the present invention, the foreign matter adsorbed on the surface of the conveyor belt is drawn out of the negative pressure chamber together with the conveyor belt, and is eliminated by the compressed air blown out from the outlet outside the negative pressure chamber. Therefore, maintenance work such as removal and cleaning of foreign matter separated from the sorted food is easy. According to the second aspect of the invention, the portion of the conveyor belt facing the suction port receives the negative pressure in the negative pressure chamber, but since the back surface is supported by the support rod, it is prevented from being drawn into the negative pressure chamber. You. According to the invention of claim 3, the negative pressure in the negative pressure chamber can be adjusted to be large or small by the adjusting means, and even when the types and sizes of the sorted food and the foreign matter are different, the two can be efficiently separated. it can. According to the fourth aspect of the present invention, the conveyor belt is vibrated in the surface direction by the vibrating means provided on the back surface, so that sorted foods and foreign substances clogged in the mesh can be separated without human power. High productivity. And so on.

[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 sectional view of a main part thereof.

FIG. 3 is a plan view of FIG. 2 with a part cut away.

FIG. 4 is an IV view in FIG. 3;

FIG. 5 is a sectional view corresponding to FIG. 2, showing an example of a posture during operation.

FIG. 6 is a sectional view corresponding to FIG. 2, showing another example of the posture during operation.

[Explanation of symbols]

 10 ··· Sorting conveyor device 11 ··· Supply conveyor 11a ··· Transfer belt 12 ··· Take-out conveyor 12a ··· Transfer belt 12b ··· Frame 13 ··· Front legs 14 ··· Rear leg 15 ··· First air nozzle 16 ··· Second air nozzle 17 ··· Splash prevention net 18 ··· Connecting rod 20 ··· Sorting conveyor 21 ··· Sorting belt 22 ··· Outlet 23 ··· Foreign matter receiving 30 ··· Negative pressure chamber 31 ··· Box-shaped frame 32 ··· Suction port 33 ··· Exhaust port 34 ··· Lid Body 35 ··· Blower 37 ··· Guide roller 38 ··· Extraction roller 39 ··· Drive chain 41 ··· Electric motor with reduction gear 42 ··· Support rod 45 ··· Horizontal axis 46: Tap plate D: Air duct F: ... blower G ···· reduction gear with an electric motor P ···· pivot axis c ···· foreign matter f ···· be sorted food (anchovy) m ···· products

Claims (4)

[Claims] 1. A box-shaped frame having a negative pressure chamber whose interior communicates with a suction side of a blower, and a permeable conveyor belt supported by the frame, and one side of the negative pressure chamber. The suction port is opened at the inner surface of the side plate provided with the suction port,
A guide roller is provided above and below the suction port, while a drawer roller is provided outside the side plate opposite to the side plate provided with the suction port, and a conveyor belt is wound between the guide roller and the drawer roller. A sorting conveyor device, comprising: an air outlet for turning the air, which is directed toward the back surface of the conveyor belt drawn out of the negative pressure chamber, and a foreign matter receiver provided ahead of the air outlet. 2. A sorting conveyor device according to claim 1, wherein a plurality of support rods for supporting a conveyor belt are provided at said suction port across said suction port. 3. The sorting conveyor according to claim 1, wherein said negative pressure chamber is provided with air exhaust means for exhausting indoor air to the outside of said room, and adjusting means for adjusting the exhaust air power to a large or small size. apparatus. 4. The sorting conveyor device according to claim 1, wherein a vibrating means for vibrating the conveyor belt in a surface direction is provided on a back surface of the suction surface.