JPS644750Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of application of the invention] The present invention relates to a powder lifting device installed at the tip of the boom of an unloader and applied to land transportation of powder and granular materials from a ship's hold, and in particular, the present invention relates to a powder lifting device that is installed at the tip of the boom of an unloader and is applied to land transport of powder and granular materials from a ship's hold. The present invention relates to a powder and granular material lifting device that can save power when lifting particles.

[Background of the invention] Conventionally, as a lifting device for difficult-to-flow powder and granular materials, a rotating body that rotates coaxially with the conveyor is installed around the lower end intake of a vertical conveyor, and the rotating body is used for cutting the powder. Some have blades.

By the way, in the conventional device, the rotating body is constituted by a cylinder having an opening and a blade element integrally protruding from the outer periphery of the cylinder. In a device having such a blade, the blade element breaks down the powder around the vertical conveyor, the broken powder is taken in through the opening, and a guide plate formed inside the cylinder is used to cut the powder around the vertical conveyor. It is designed to lead to the lower end intake.

However, in such a structure using a cylinder, the powder and granules around the vertical conveyor solidify into a wall inside the cylinder and may not reach the intake port of the vertical conveyor. Therefore, until now, the rotational power of the blade has been increased so that a large amount of granular material always flows through the opening of the cylindrical body, and a large inward pushing force has been obtained. However, such means have the disadvantage that a very large amount of rotational power is required to increase the amount of cutting, and an improvement has been desired.

[Purpose of invention]

The present invention was developed based on these circumstances, and it is possible to guide the cut powder and granular material to the intake port at the bottom end of the vertical conveyor with low power, thereby improving the efficiency when transporting difficult-to-flow powder and granular material. It is an object of the present invention to provide a powder and granular material lifting device that can save power consumption.

[Summary of the idea]

In the powder and granular material lifting device according to the present invention, the blade that rotates around the lower end of the vertical conveyor is constituted by a plurality of rotating shafts and a blade element having an articulated link structure that rotates in conjunction with the rotating shafts. That is, when one end of a multi-articulated link that can freely rotate on a plane is rotated, the other end of the link always moves in the centripetal direction due to the interlocking rotation. The present invention is based on this principle, and by using a blade element with a free link structure, the powder once scraped off is naturally guided toward the intake side by the rear end of the element. . In other words, it is possible to eliminate the need to push in new powder from the outside and save the power involved.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show the structure of a powder and granular material lifting device. A ring-shaped rotary body 4 is provided around a lower end intake port 2a of a vertical conveyor 2 having a screw conveyor or the like built into a cylinder, and is rotationally driven by a drive device 6 such as a motor. A plurality of shafts 10 constituting blades 8 for cutting down powder and granule material are disposed on the rotating body 4 at intervals in the circumferential direction. Note that the shaft 10 has a portion 10a that is inclined toward the outer circumferential side of the rotating body.
and a portion 10b falling vertically from its tip.

A plurality of blade elements 12 are connected to the falling portion 10b of the shaft 10 with their lower ends aligned. This blade element 12 is
A plurality of vertical plates 16 of different heights are extended like a folding screen through vertical pin pivot parts 14 as nodes, and one end is connected to the shaft 10 and the other end is free. . Note that each vertical plate 16 gradually becomes shorter from one end toward the other end.

Further, at the lower end of the shaft 10, an edge member 18 is provided which extends radially from the axis of the vertical conveyor.
are connected to the shaft 10 so as to be integrally rotatable, and an edge portion 18a is formed on the lower side of each edge member 18, and is inclined at a predetermined angle with respect to the rotating surface thereof. Note that 20 is a rotor that supports the edge member 18, and 22 is a vertical rib.

Next, the action will be explained. FIG. 4 shows a state in which the blade 8 is stopped, FIG. 5 shows a state in which the blade 8 has started rotating, and FIG. 6 shows a state in which the blade 8 is rotating. That is,
When the blade 8 rotates in one direction (the direction of arrow A in FIG. 5), the blade element 12 connected to the shaft 10 in a freely rotating state gradually leaves behind the blade element 12 and shifts toward the center of rotation. I'm going to rank. As the rotation progresses further, as shown in Figure 6,
The vertical plate 16 on the rear end side of the blade element 12 approaches near the axis of the vertical conveyor 2 .

Figures 7 to 12 show the powder and granule recovery action based on this.
It is schematically shown in the figure. Figure 7 shows shaft 10.
The movement of the blade element 12 due to the rotation is shown from a broken line to a solid line. If the blade element has a rigid structure, as shown in FIGS. 8 and 9, the blade element 12' will rotate with the rotation of the shaft 10', and the powder 26 will not move toward the center of rotation. Not guided.

On the other hand, when the blade element 12 has a flexible structure as in the present invention, the vertical plate 16 on the rear end side
As the granular material 26 is gradually deviated toward the center of rotation, as shown in FIGS. 10 and 11, the powder 26 is gradually transported toward the center of rotation.

In addition, the granular material 26 guided in this way is
It is cut down by the shaft 10 in advance.

According to the granular material lifting device according to the embodiment having the above configuration and operation, when the blade rotates, the granular material 26 cut down by the shaft 10 takes in and presses another granular material from the outside. It is unnecessary and is guided by natural flow to the rotation center side, that is, to the lower end intake port 2a of the vertical conveyor 2. Therefore, as the driving force for the rotating body 4 by the drive device 6, it is sufficient to apply only the power for cutting down the powder and granular material, and the conventional pushing power is not necessary, so that rotational power can be saved.

Note that, according to the configuration of the embodiment, the edge member 18
Since the edge 18a is formed on the lower side of the apparatus, in addition to guiding the granular material 26 toward the center, scraping of the granular material from the lower part of the apparatus is also carried out, thereby improving efficiency.

As shown in FIGS. 12 and 13, the edge member 18 has an inclined plate structure forming an edge 18a, and as shown in FIGS. 14 and 15, the edge member 18 has a vertical plate structure. The edge 18a can also be formed by forming an uneven portion.

Further, as shown in FIG. 16, if the vertical plate 16a on the rear end side of the blade element 12 is bent inward, it is possible to prevent the powder from escaping to the rear.
The efficiency of taking in powder and granules can be further improved.

[Effect of idea]

As described above, according to the present invention, the blade is composed of a shaft for cutting down powder particles and a centripetal blade element, so that powder particles can be moved on a vertical conveyor without requiring extra power. It can be guided to the intake port at the lower end, saving power.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG.
is a perspective view, Figure 1B is a plan view, Figure 2 is a front view,
Fig. 3 is a bottom view as seen from the arrows in Fig. 2, Figs. 4 to 6 are illustrations of the action of the blade, Figs. 7 to 11 are illustrations of the action of taking in powder and granules, and Fig. 12 is a bottom view of the blade. , FIG. 13 is a side view, FIG. 14 is a bottom view showing a modification of the edge of the blade, and FIG. 15 is a side view.
FIG. 16 is a bottom view showing a modification of the blade rear end shape. 2... Vertical conveyor, 2a... Lower end intake, 4... Rotating body, 8... Blade, 10... Shaft, 12... Blade element, 18...
Edge member, 18a...Edge.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Powder in which a rotating body that rotates coaxially with the conveyor is provided around the lower end intake of a vertical conveyor, and the rotating body is provided with a blade for cutting the powder and granular material. In the body lifting device, the blade includes a plurality of shafts that fall down from the rotating body at intervals in the circumferential direction;
A granular material lifting device comprising a plurality of blade elements rotatably connected horizontally from the lower end of each shaft via nodes. (2) An edge member extending radially from the shaft center of the vertical conveyor is connected to the lower end of the shaft so as to be able to rotate integrally with the shaft, and the edge member has powder inclined at a predetermined angle with respect to the rotating surface of the shaft. A powder and granule material lifting device according to claim 1, characterized in that an edge for cutting down the granule material is formed.