JPS644748Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a granular material lifting device for lifting granular material stored in bulk in a ship's hold or the like.

[Background of the idea]

This type of device has a rotor equipped with a plurality of blades located directly below a conveyor with fins extending in the vertical direction, and the powder and granules taken in between the blades of the rotor are transferred to the fins by centrifugal force of rotation of the rotor. It is known that the powder is fed to a conveyor with an attached conveyor for transport. In addition, in order to reduce the power consumption of the rotor of the above device, the blades of the rotor are provided so as to extend in the longitudinal direction beyond the width of the rotor, the rotor is surrounded by a case, and powder particles are placed in the axial direction of the rotor in the case. Attempts have been made to provide a side opening for taking the body into the case. This type of apparatus is illustrated in FIGS. 1 to 3.

In the figure, powder and granular materials 12 are stacked in bulk in a ship hold 10. The lifting device 14 has a finned belt 22 installed between rotating drums 16 and 18 arranged above and below, drives an electric motor 20 to rotate the upper rotating drum, and rotates the finned belt 22 in a counterclockwise direction. let The outside of the finned belt 22 is covered by a casing 24, and the casing 24 has a powder discharge port 26 at the upper part and a powder reception port 28 at the lower part. Further, a rotor 30 is disposed at the receiving opening in the lower part of the casing. The outer periphery of the rotor 30 has a plurality of blades 34 extending in the longitudinal direction beyond the width of the rotor.

The rotor shaft 36 is supported from the casing 24 or the like via a suitable support member 38, and is rotated by a suitable transmission means 40. The rotor 30 is surrounded by a case 44. A side opening 46 is provided in the case 44 at a position in the rotor axial direction. This side opening 46 is formed in a circular shape centered on the shaft 36 and coincides with the outer periphery of the rotor, in other words, the inner periphery of the blades 40, and allows bulk powder and granules to be transferred to the case 4.
It functions as an inlet for powder and granular material to be taken into the 4.

This device takes in the powder from the side opening 46, so there is no friction loss between the accumulated powder and the transported powder, and it has the excellent effect of reducing power consumption. have however,
Due to its construction, the above device has the disadvantage that the support member 38 and the transmission means 40 must be located in front of the side opening 46, which obstructs the smooth inflow of powder and granules. Similarly, the rotor shaft 36 has a side opening 46
Because of the central location of , there was a tendency for the inflow of powder into the side openings to be inhibited.

[Purpose of invention]

The purpose of the present invention is to take advantage of the low power consumption of the device equipped with the side opening, and
It is an object of the present invention to provide a powder and granular material lifting device that allows powder and granular material to flow more smoothly into a side opening.

[Summary of the idea]

The powder and granular material lifting device according to the present invention is characterized in that the rotor is divided into two parts, each rotor is arranged in a cantilever structure at both ends of a common rotating shaft, and the driving force transmission means of the rotor is installed in the middle part of the common rotating shaft. A plurality of blades are provided on the outer periphery of each rotor, and each rotor is provided with a plurality of blades extending in the longitudinal direction than the width of the rotor. It is characterized by providing a side opening at an outer position for taking the powder into the case.

[Example of idea]

Hereinafter, embodiments of the present invention will be described based on the drawings. 4 and 5 are drawings showing an embodiment of the present invention, and in the drawings, the same reference numerals as in FIGS. 1 to 3 indicate the same configurations.

At the lower end of the casing 24 are cases 44A, 44.
B is attached with a gap g, and rotors 30A and 30B are housed in each case.
A plurality of blades 34A, 34B are attached to the outer periphery of each rotor, extending in the longitudinal direction beyond the width of the rotor. These rotors are disposed on both ends of a common rotating shaft 50 in a cantilevered structure. Common rotation axis 5
0 is supported by bearings 52A, 52B installed inside the cases 44A, 44B, and is transmitted via a gear mechanism 54, an intermediate shaft 56, and a transmission means 58 as the lower rotating drum of the finned conveyor rotates. Rotate. One end of the transmission means 58 engages the common rotating shaft 50 at an intermediate position, which position is within the gap g between the cases 44A, 44B.

Side openings 46A, 46B are provided on the outer sides of the cases 44A, 44B in the axial direction of the common rotating shaft. The side openings 46A, 46B are circles having a diameter that substantially matches the inner diameter of the blades 34A, 34B, and function as openings for taking the powder into the case. On the other hand, side openings 46A, 4
Auxiliary openings 60A, 60B are provided inside the cases 44A, 44B, facing the openings 6B. These auxiliary openings 60A, 60B are basically circular like the side openings, but the bearings 52A,
52B and its support member, the upper portion is not open and the overall shape is V-shaped.

Next, the operation of the apparatus of this embodiment will be explained.

This device suspended from a crane or the like is pushed into a layer of powder and granule material 12, and the powder and granule material enters the side opening 46.
A, 46B flows into the cases 44A, 44B. Belt with fins 22 and rotors 30A, 30
B are both rotating counterclockwise, so the powder and granules that have flowed into the spaces between the blades 34A and 34B of each rotor are as follows:
It is scraped up and released upward by the rotational centrifugal force of the rotor. The released powder is received by the finned belt 22 and transported. Side opening 46
There is no member in front of A and 46B that prevents the inflow of powder and granular material. Therefore, the powder material smoothly flows into the case. Further, a small amount of powder or granules flows into the gap g between the cases 44A and 44B, and when the device is pushed down, the powder or granules in the lower layer enters into the gap g. However, since these powders and granules are taken into the case through the auxiliary openings 60A and 60B, the gap g is not filled with or clogged with powders and granules.

In the above embodiment, an auxiliary opening is provided, but in order to prevent powder from flowing into the gap g,
For example, if a surrounding member is provided, the auxiliary opening may be omitted. Further, the rotor drive device is not limited to one that transmits the rotational force of the lower rotating drum, and other drive sources may be used.

[Effect of idea]

Since the lifting device according to the present invention takes in powder and granules from the side opening, it consumes less power than conventional devices that take in powder and granules from outside the rotor blades, and the powder is placed in front of the side opening. Since there is no member that obstructs the inflow of the granules, the granules can be smoothly taken into the case surrounding the rotor.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view showing a schematic configuration of a conventional granular material lifting device, Fig. 2 is a side view showing the lower structure of Fig. 1, and Fig. 3 is a view taken from the - arrow in Fig. 2. 4 is a longitudinal sectional view showing an embodiment of the present invention, and FIG. 5 is a sectional view taken in the direction of the - arrow in FIG. 4. 12... Powder, 22... Belt with fins, 30
A, 30B...Rotor, 34A, 34B...Blade, 44A, 44B...Case, 46A, 46B
...Side opening, 50...Common rotation axis, 52A, 5
2B...Bearing, 58...Transmission means, 60A, 60
B...Auxiliary opening.

Claims (1)

[Scope of utility model registration request] A rotor equipped with a plurality of blades is placed directly below the finned conveyor that extends in the vertical direction, and the powder and granules taken in between the blades of this rotor are supplied to the finned conveyor by the rotational centrifugal force of the rotor. The rotor is divided into two parts, and each of the rotors is arranged in a cantilevered structure at both ends of a common rotating shaft. , a plurality of blades are provided on the outer periphery of each rotor that protrude in the longitudinal direction from the width of the rotor, and each rotor is surrounded by a case, and the axial direction of the common rotation axis of this case is A powder and granular material lifting device characterized in that side openings for taking powder and granular material into a case are provided at positions on the outside of both sides.