JPS5930473B2 - Long article sorting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for separating and removing long objects such as sticks mixed in powder or granules.

If long objects get mixed in with the powder or granules, they can cause problems during transfer and storage, such as bridging in the hopper or jamming in the feeder or discharger, so it is necessary to remove the long objects.

In the conventional continuous sieving operation, as shown in Figs. 1 and 2, the powder and granules supplied to the upper part of the mesh sieve 1 are subjected to vibration, rocking, or rotational motion, and are moved in the transport direction 2. At the same time as being transported, it is separated into powder 3 having a larger particle size than the mesh size and powder 4 having a smaller particle size. If there is a long material 5 mixed in, it will stand up on the surface of the sieve 1 as shown in Figures 3 and 4 even if the length is longer than the mesh interval.
It could pass through the mesh or cause clogging, which was a hindrance to driving. The present invention eliminates the above-mentioned drawbacks of the conventional method by providing a group of parallel rollers at right angles to the transport direction at the bottom of the feeder trough and a group of weir plates parallel to the transport direction. It is an object of the present invention to provide a long article sorting device that has a high efficiency and is free from clogging.

The present invention provides a plurality of weir plates on the bottom plate of a trough of a vibratory feeder for sorting the flow of materials into a plurality of types, and the shear plates are arranged to extend continuously further downstream than the downstream end of the bottom plate. A long product, characterized in that a plurality of rotating rollers are arranged below the extending portion of the weir plate in a direction perpendicular to the extending direction of the weir plate, separately from the vibrating feeder. It is a sorting device.

The present invention will be described with reference to the drawings in accordance with an embodiment. In FIGS. 5 and 6, a trough 6 of a vibrating feeder, such as an electromagnetic type, is provided with a bottom plate 17 and a side wall 18.

In the rear half of the trough 6, the bottom plate 17 is omitted, and a plurality of rollers 13 are arranged on an extension of the bottom plate 17 at right angles to the transport direction and parallel to each other. Although the distance between the mouth rollers 13 is relatively small, wide distances such as L3 and L3' are provided at appropriate locations. These rollers 13 are moved in the same direction (counterclockwise in Fig. 6) by an electric motor or the like.
Rotate to. Inside the trough 6, a plurality of weir plates 8 are provided on the bottom plate 17 of the trough 6 of the vibrating feeder at intervals of L2 for sorting the flow of the material into a plurality of types.

The weir plate 8 is arranged to extend continuously further downstream than the downstream end of the bottom plate 17, and is provided below the extending portion of the weir plate 8 in a direction perpendicular to the extending direction of the weir plate 8. A plurality of rotating rollers are installed separately from the vibrating feeder. The height of each weir plate 8 is the same from the shoulder 12 onwards, but the starting point of each is the center one is the starting point 7, the ones on both sides are the starting point 9, and the outer ones are the starting point 11, As one moves outward from the center, the starting point is gradually delayed, and therefore the slope up to the shoulder 12 becomes gradually steeper. 14 is a long object discharge chute.

When driving, the object to be handled should be marked with an arrow 16 at the top of the trough 6.
It is supplied as follows.

Among the objects to be handled, the powder 10 is distributed appropriately in the width direction of the trough 6 and is gradually transferred in the longitudinal direction by the movement of the trough (only the powder passing through the passage of the outermost weir plate is shown in the figure). However, in reality, the distribution is evenly distributed). Those placed on the roller 13 connected to the bottom plate 17 and larger than the small interval L4 are further transferred, but fall down at the large interval L3. On the other hand, even if the long object 5 is sent at a position perpendicular to the transport direction, it hits the starting points 7, 9, and 11 one after another, rides on the sloped edge, and is transported by the vibration action of the continuously extended weir plate 8. In the meantime, the direction is gradually changed to the transport direction, and finally it falls between the weir plates 8 and is transported.

When it reaches the top of the roller 13, it is transferred by the rotation of the roller 13 and is discharged to the long article discharge shoe opening 4. As can be seen from Figures 7 and 8, the length L of long items that can be separated is as follows:
There is a relationship between the weir plate spacing L2, the roller spacing (at the maximum location) L2, and the roller diameter D, and long objects can be removed based on the diameter of the powder and granules in the object and the length of the long objects contained. Optimum design of the device can be carried out.

FIG. 9 is a graph showing the dimensions of removable long objects due to dimensional changes in the roller spacing L2 when the weir plate spacing L2 and the roller diameter D are constant. Due to the action of the inclined edges starting from the respective starting points 7, 9, and 11 of the weir plate 8, the long articles 5 are transferred without accumulating in the supply section, and the elongated articles 15 with a special shape that do not fit between the weir plates 8 are also transported. The upper edge of the weir plate 8 of the same height, which ascends this inclined edge and extends continuously past the shoulder portion 12, is transferred by the vibration of the weir plate 8 and is discharged to the long article discharge chute 14.

L3 and L! By changing the granules, it is possible to further classify the powder and granules by particle size.

This device not only removes long objects in powder and granular materials, but also removes lumps, long objects, etc. that cannot be crushed to a specified particle size after crushing waste (municipal waste, bulky waste), etc. using a crusher. It can also be used as

In conventional impact type and shear type crushers, long pieces may be discharged without being completely crushed and sized. If applied in this case, it will have a great effect. According to the present invention, long foreign objects mixed in powder and granules can be continuously and reliably removed, and large foreign objects that cannot fit between the weir plates can be sorted, reliably transferred and removed, and the separation accuracy can be improved. It is possible to provide a reliable long article sorting device that improves the quality of the product and is free from clogging, which has an extremely large practical effect.

[Brief explanation of the drawing]

Figure 1 is a conventional sieve sorting device, Figure 2 is its front view,
Fig. 3 is a plan view showing a situation in which a long object passes, Fig. 4 is a front view thereof, Fig. 5 is a plan view of an embodiment of the present invention, Fig. 6 is a sectional view taken along line I-1, and Fig. 7. , FIG. 8 is a plan view and a front view illustrating the relationship between the dimensions of the long object, the distance between the weir plates, the distance between the rollers, and the diameter of the rollers, and FIG. 9 is a graph showing these relationships. 1...Sieve, 2...Transportation direction, 3,
4...Powder, 5...Long material, 6...
... Trough, 7 ... Starting point, 8 ... Weir plate, 9 ... Starting point, 10 ... Powder,
11...Starting point, 12...Shoulder, 13.
...Roller, 14...Long object discharge chute, 15...Long object, 16...Arrow, 17
...Bottom plate, 18...Side wall.

Claims (1)

[Scope of Claims] 1. A plurality of weir plates are provided on the bottom plate of the trough of the vibratory feeder to separate the flow of the material into a plurality of parts, and the weir plates are continuously arranged further downstream than the downstream end of the bottom plate. A plurality of rotary rollers are arranged under the extending portion of the weir plate in a direction perpendicular to the extending direction of the weir plate, separately from the vibration feeder. Long article sorting device. 2. A patent in which the height of the weir plate gradually increases from the starting point of the weir plate toward the transport direction, forming an inclined edge, and the height of the plurality of weir plates remains constant after a predetermined point. An apparatus according to claim 1.