JPS60223734A - Floating transport device for powdery and granular material - Google Patents

Abstract

PURPOSE:To lessen the power consumption of the rotor as well as facilitate plunging of the tip of a lift transport device into a layer of powdery and granular material by furnishing a casing surrounding the rotor having vanes with openings at the casing sides for taking in the material, and by installing a material digging means at the lower outside. CONSTITUTION:A rotor 36 is equipped with vanes 40 hanging over with a large width, and the periphery of the vanes is enclosed by a casing 44 having a side opening 46. A fixed member 50 having a sharp head part 48 is mounted to the lower outside of this casing 44. When the lower part of the casing 44 is plunged gradually into a layer of powdery and granular material 12, the portion directly under the casing 44 is shoved aside by said sharp head 48 of the member 50 so as to facilitate the plunging opertion. When further plunging buries the side opening 46 in the layer of the material 12, the material 12 is sent from this opening 46 to the rotor vane 40 in the casing 44 driven by natural flow, and accelerated by rotation of the rotor and released to be then lift transported by a fillet-equipped belt 22, which will suppress the power consumption of the rotor.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention has been attempted using a device shown in FIG. 1 as a device of this type for handling powder and granular materials stored in bulk in a ship's hold or the like. Hold 1
Powder material 12 is piled up in bulk inside the container. Lifting device 14
A belt 22 with fins is installed between the rotating drums 16 and 18 arranged above and below.

The electric motor 2o is driven to rotate the upper rotating drum and rotate the finned belt 22 counterclockwise. 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 top. It has a powder receiving port 28 at the bottom. Further, a rotor 30 is disposed at the receiving opening in the lower part of the casing.

This rotor has a plurality of blades 34 attached to its outer periphery.

It rotates counterclockwise to apply the centrifugal force to the granular material, thereby supplying the granular material to the finned belt. When the level of the bulk powder layer decreases, the lifting device 14 is gradually lowered by its own weight and thrust into the powder layer. At this time, since the above operation is performed while rotating the rotor 3o, the lifting device 14 can be lowered easily.

However, in the above-mentioned apparatus, the intake of the granular material by the rotor 30 is performed on the left side (back section) in FIG. 1, while the discharge of the granular material is performed on the right side (front section).

For this reason, the distance from the intake of the granular material to the discharge in this rotor 3o becomes long, and during this time, the granular material between the blades 34 as a sent object and the granular material existing at the outer circumferential position of the blade as a deposit. The friction loss caused by the loss of strength.

There is a drawback that the power consumption of the rotor 30 is large. [Object of the Invention] An object of the present invention is to reduce the power consumption of the rotor.

Another object of the present invention is to provide a powder and granular material lifting device in which the operation of lowering the lifting device and plunging its tip into the powder and granular material layer is easy.

[Summary of the invention]

The present invention has rotating drums arranged above and below, a belt with fins arranged between these rotating drums, and a rotor equipped with a plurality of blades directly below the belt with fins. In the apparatus for feeding the finned belt to transport the powder and granules taken in between them by the centrifugal force of rotation of a rotor.

The blades of the rotor are provided on the outer periphery of the rotor with the width of the rotor extending in the longitudinal direction. The present invention is characterized in that a side opening is provided for taking in the powder, and a means for excavating powder and granular material is attached to the lower outer part of the case.

As the excavation means, a fixed member having a pointed head or a screw drive unit is preferably used.

[Embodiments of the invention]

Hereinafter, nine embodiments of the present invention will be described based on the drawings.

Embodiments of the present invention are shown in FIGS. 2 and 3. In the figure, the same reference numerals as in FIG. 1 shown above indicate the same configuration as in FIG. 1. A plurality of blades 40 are attached to the outer periphery of the rotor 36 and extend in the longitudinal direction beyond the width of the rotor.

The rotor shaft 42 is supported from the casing 24 or the like via a suitable support member 3B, and is rotated by a suitable transmission means 39. The outer periphery of the rotor 36 is surrounded by a case 44. A side opening 4 is provided at the position of the case 44 in the rotor axial direction.
6 is provided. This side opening 46 is formed in a circular shape around the shaft 42 and coincides with the outer periphery of the rotor 36, in other words, the inner periphery of the blades 40. Functions as a powder inlet. Also, on the lower outer side of the case 44.

A fixing member 50 having a pointed head 48 is attached.

The operation of the nine embodiments will be explained below.

This device is suspended by a crane (not shown),
In this operation, first, the lower end portion of the case 44 is gradually pushed into the layer of the powder and granular material 12. At this time, case 44
Since the fixing member 50 is attached to the lower outer part of the
The powder directly below the case 44 is attached to the pointed head 4 of the fixing member 50.
8. Therefore, the thrusting operation can be performed easily.

When this thrusting operation is performed to a certain extent and the side opening 46 of the case 44 is plunged to the extent that it is buried in the layer of powder and granules, the powder and granules flow naturally due to gravity from the side opening 46 to the case 4.
The liquid reaches between the blades 40 of the rotor 36 in the rotor 4, is accelerated by the rotation of the rotor, and is ejected upward along the inner surface of the case 44. Since the speed of the powder to be discharged is approximately equal to the circumferential speed of the tip of the blade 40, a sufficient discharge speed can be imparted to the powder by appropriately setting the rotation speed of the rotor. The released powder is received by the finned belt 22 and transported. At this time, the powder and granules flow from the inside to the outside of the blades 40 in a natural falling state, so that the average position at which the powder and granules are taken in is the lower part of the rotor. Therefore, the distance from the intake of the powder to the discharge from the rotor 36 is approximately one-half that of the apparatus shown in FIG. 1 above. Therefore, the friction loss between the powder and granular materials during this period is halved, and the power consumption of the rotor and, by extension, the power consumption of the entire lifting device can be reduced.

FIG. 4 shows another embodiment of the invention. In this embodiment t, the rotor is divided into two parts, and a rotor 36A.

, 156B, and each rotor is a case 44A.

44B. Each case has side openings 4e+A, 46. Fixing members 50A and 50B having a point B and a pointed head are provided. Rotor 36A, 3
6B are rotated via a common axis. According to this embodiment, the rotor is divided into two parts, each having a 9° case 44A, 4'4B, and a fixing member 50A.

The width of 50B can be reduced. Therefore, the thrusting operation can be performed more easily. Moreover, the fixing member 50A,
Since the height dimension of 50B can be made relatively small, the lifting device can be inserted into the lower part of the powder layer.

Still other embodiments of the present invention are shown in FIGS. 5 and 6.

Screw feeders 52 are disposed on both sides of a fixing member 50C having a pointed head on the lower outer side of the case 44C, so that the powder and granules located directly below the case 44C can be forcibly removed. Therefore, the thrusting operation becomes easier than in each of the embodiments described above.

〔Effect of the invention〕

As described above, in the powder and granular material lifting and placement according to the present invention, the outer periphery of the rotor placed at the lower position is surrounded by a case, and the granular material is excavated in the side opening of the case and the lower outer part of the case. Since the means is provided, the excavating means functions during thrusting and the thrusting is easily performed.6 When the powder and granules are transported, the powder and granules are taken in from the side opening. Power consumption is low.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing a schematic configuration of a conventional powder and granular material lifting device, Fig. 2 is a front sectional view showing an embodiment of the present invention, Fig. 3 is a side view thereof, and Fig. 4 is a main part of the present invention. FIG. 5 is a front sectional view showing another embodiment of the invention, FIG. 5 is a side view showing still another embodiment of the invention, and FIG. 6 is a front sectional view thereof. 16.18...Rotating drum, 22...Fin belt 3
6.36A, 36B...Rotor, 40...Blade
Root 44.44A, 44B, 44C...Case. 46... Side opening. 50.5OA, 50B, 50C... fixed member. 52...Screw feeder. Figure 1 Figure 2 Figure 3 Figure 4 50A 508 Figure 5 Figure 6

Claims (1)

[Scope of Claims] (1) It has rotating drums arranged above and below, a belt with fins arranged between these rotating drums, and a rotor equipped with a plurality of blades directly below the belt with fins. The powder and granules captured between the blades of this rotor are removed by the rotational centrifugal force of the rotor. In the device for feeding powder and granular material to the finned belt, the blades of the rotor are provided on the outer periphery of the rotor so that the width of the rotor also extends in the longitudinal direction, and the rotor is surrounded by a case, A powder or granular material characterized in that the case is provided with a side opening for taking the powder or granular material into the case at a position in the rotor axial direction, and a powder or granular material digging means is attached to the lower outer part of the case. Lifting device. 12) The powder/grain material lifting device according to claim 1, wherein the powder/grain material excavation means is a fixed member having a pointed head. (3) The powder/grain material lifting device according to claim 1, wherein the powder/grain material excavation means includes a screw drive section.