JPS60167829A - Granular powder unloading and feeding apparatus - Google Patents

Abstract

PURPOSE:To provide an apparatus for unloading granular powder from a hold and feeding same, which is reduced to a compact size and which can reduce power consumption and stably unload and feed granular powder by providing a feeder on the axis of a rotary drum mounted below a conveyer. CONSTITUTION:A conveyer 22 and a rotor 46 are driven to lower the lower end of the conveyer onto granular powder 14 in a hold 12. Thus, the granular powder 14 is forced to flow in an opened take-in port 50 of a feeder 30 by its gravity, and scraped up by a blade 34 to be carried by the conveyer 22. Subsequently, the take-in port 50 is lowered into the granular powder 14, and the feeder 30 is moved back and forth by a cylinder 62, so that granular powder on the front and rear surfaces are removed by a casing 44 to smooth scooping. In this arrangement, granular powder can be conveyed stably with a small-sized apparatus.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a powder and granular material lifting device that is used primarily when transporting powder and granular material accumulated in a ship's hold or the like.

[Background technology]

Conventionally, this type of apparatus is known as a pneumatic conveyance type or a mechanical type using a packet conveyor or a case conveyor. The former method sucks the granular material through a nozzle provided at the tip of a vertical transport pipe, but it has the disadvantage of extremely high power consumption.

Packet conveyors have a structure in which a plurality of packets are arranged on a conveyor and the powder and granules are pulled up one after another, and they are advantageous in that they consume less power and have less power loss due to friction than pneumatic transport types. However, since the intervals between the buckets are large and the feed rate cannot be increased at all, the device must be enlarged to ensure sufficient conveyance capacity.

A case conveyor lifts powder by running a chain equipped with a scraping device inside a vertical case, and has the advantage that the lifting device can be made more compact because the filling rate in each case can be increased. but.

It has the disadvantage that it cannot be applied to powders with high fluidity.

In addition, there is a disadvantage that the case and chain are subject to severe wear and power loss due to friction is also significant.

In order to solve this problem, the present applicant installed a finned conveyor that revolves in the vertical direction, and directly below this conveyor, the powder and granules are transferred to the conveyor by the rotating centrifugal force of a rotor for scraping up the powder and granules. An application has been filed for a lifting device (% Application No. 57-209972).

Although this prior invention greatly improved the power loss of the lifting device, noda ash has relatively low fluidity.

For granular materials such as cement, it is difficult to remit stable remittances due to the lack of excavation function to insert the lifting device into the granular material and the function to cut through the granular material. Ta.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and its purpose is to provide a powder and granule material lifting device that consumes less power and is compact, yet can demonstrate its full stable lifting capacity. It's about doing.

[Key points of the invention]

The powder and granular material lifting device according to the present invention includes a pair of rotating drums arranged above and below, a finned conveyor installed between the five rotating drums, and a finned conveyor installed directly below the conveyor to transport powder particles by rotational centrifugal force. The present invention is characterized in that it is provided with a feeder for feeding bodies to the conveyor, and that the feeder is swingable about the axial center position of the lower rotating drum of the conveyor as a fulcrum.

[Embodiments of the invention]

FIG. 1 shows a lifting device 10 according to the present invention. Powder material 14 is deposited in the hold [2]. This lifting device 10 is
The upper and lower rotating drums 16 and 18 are provided, and the upper rotating drum 16 is rotated counterclockwise by a driving machine 20. A finned conveyor 22 is installed between the rotating drums 16 and 18 and rotates counterclockwise as the two-rotation drum 16 rotates.

A feeder 30 is arranged directly below the conveyor 22.

The powder 14 that has flowed between the plurality of blades 34 is fed to the feeder 3o.
It is ejected upward by the rotational centrifugal force.

FIGS. 2 and 3 show the detailed structure of the lower part of the lifting device 1o. The conveyor 22 is housed in the casing 36, and the lower end 40 of the casing 36 forms a nine-circumferential surface, a portion of which is an opening 42 through which the powder and granules pass.

A feeder 30 is disposed directly below the casing 36 . The feeder 30 is mainly composed of a casing 44, a rotor 46 housed within the casing 44, and a plurality of blades 34 erected around the outer circumference of the rotor. There are intake ports 50 on both sides of the casing 44 for introducing powder and granules.
is formed.

The rotor shaft 4-8 passes through the intake port 50.

It protrudes on both sides and is pivotally supported by a bell crank 54 via a bearing 52. Further, the casing 44 is also fixed to the bell crank 54 by a fixing member 56, and its upper end 5
8 is a concave circumferential surface, and the lower end 40 of the casing 36
and form a sliding surface.

A cylinder 62 is connected to the other end 60 of the bell crank 54, and by driving the cylinder 62, the bell crank 5
4 is capable of swinging about the axial center position of the lower rotary drum 18 (see FIG. 1) as a fulcrum. This bell crank 54
As the feeder 30 opens, the feeder 30 swings together. Also,
A pulley (or sprocket) 64 is fixed to one end of the shaft 48 of the rotor, and is rotated in conjunction with the rotation of the pulley (or sprocket) 680 provided on the shaft 66 of the lower rotating drum 18 via a belt (or chain). be done.

The lifting device 10 configured as described above operates as follows. First, the lifting device 10 is lifted up by a crane or the like (not shown), the conveyor 22 and the rotor 46 are started to rotate, and then the lower end is lowered to the granular material 14 in the hold 12. Since the intake port 50 of the feeder 30 is open,
The granular material 14 flows into the intake port 50 by gravity. The powder 14 is accelerated by the blades 34 of the rotating rotor 46 and is sent between the fins of the conveyor 22 by centrifugal force. The powder 14 between the fins is conveyed upward by the conveyor 22 and is discharged to the outside from a discharge port 38 provided at the upper part of the casing 36 .

Thereafter, the intake port 50 is lowered so that it is buried in the powder 14. However, if the fluidity of the granular material 14 is relatively low, it is impossible to excavate directly below the feeder 50, and the amount of granular material 14 taken into the intake port 50 is stable. cannot be secured.

Therefore, when the cylinder 62 is operated to swing the feeder 30 back and forth, the powder and granules on the front and rear surfaces are removed by the casing 44, and as shown in FIG. be able to.

Furthermore, by performing a similar operation while moving the lifting device 10 in the lateral direction, as shown in FIG. A stable intake amount can be ensured.

Since the feeder 30 swings around the axial center position of the lower rotary drum 18, the distance between the two is constant; the feeder discharges the powder and granules upward, and the conveyor 22 receives the powder and granules. The spacing between the bottom edges of can also be kept constant. Therefore, the rotational drive and swinging operation of the feeder 30 can be performed in parallel, and efficient operation can be performed in which the powder and granular material is lifted, excavated, and chipped at the same time.

FIGS. 6 and 7 show an embodiment in which a scraper is provided below the casing. During the swinging, the scraper ξ7o acts to scrape off the powder 14.
It can enhance the effectiveness of drilling and cutting.

〔Effect of the invention〕

As described above, in the present invention, the feeder installed below the conveyor is made swingable under predetermined conditions.

Even powders with low fluidity can be excavated and crushed, allowing stable lifting.

[Brief explanation of the drawing]

Fig. 1 is a simplified sectional view showing the entire lifting device according to the present invention, Fig. 2 is a side view showing the feeder section, Fig. 3 is a side view of Fig. 2, and Fig. 4 is an explanation of the excavation operation. FIG. 5 is an explanatory diagram of the shovel breaking operation, FIG. 6 is a side view showing another embodiment, and FIG. 7 is a side view of FIG. 6. 10... Lifting device 16... Upper rotating drum 18.
・・Lower rotating drum 22 ・・Finned conveyor 30
...Feeder 54...Bell crank 62...7 cylinder. Figure 1 Figure 2 Figure 3 Figure 54) Figure 4 Figure 6 Figure 5 Figure 7

Claims (1)

[Claims] A pair of rotating drums arranged above and below, a finned conveyor installed between the two rotating drums, and a feeder disposed directly below this conveyor for supplying powder and granules to the conveyor by rotational centrifugal force. 1. A powder and granule material lifting device comprising: a powder and granule material lifting device, characterized in that the feeder is swingable about the axial center position of a lower rotating drum of the conveyor as a fulcrum.