JPH1159784A - Hopper for preserving powder and granular substance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow deposits of powder and granular substance to be removed by including a slide plate sliding on a gradient wall face and wiper blades bridged independently from the slide plate while being fixed. SOLUTION: A lower part of a hopper is shaped in an approximate pyramid which is inverted, wherein powder and granular substance is put in from above, and after it is once preserved, it is discharged from a lower side as needed. A slide plate 2 is placed while being linked with a cylinder 4 along a gradient wall face on the gradient wall face on a lower part inside the hopper 1 for preserving powder and granular substance and it is slid up and down. The slide plate 2 is shaped in an inverted trapezoid wherein a vertex of an inverted triangular shape is cut by a width of a discharge port. A plurality of wiper blades 3 are fixed and placed in parallel on an upper part of the slide plate. Thus deposit attaching onto the slide plate can be scraped out by the wiper blades by vertical movement of the slide plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hopper for storing powder and granules which is particularly suitable for storing and discharging powder which contains water and adheres to an inner wall surface of the hopper and is liable to be suspended. It is.

[0002]

2. Description of the Related Art When processing powder ore such as chromium ore used in metal refining and powder or the like such as smelting dust, the powder usually contains a large amount of water. There is a problem that the powders have poor fluidity and tend to be hardened, adhere to the inner wall surface of the hopper, become a so-called shelving state, and stay in the hopper.

Conventionally, in a hopper for storing powders and granules, an air knocker or a vibrator that vibrates the powders or granules is provided in order to prevent the hoppers from being piled up in the hopper and hung from the shelf and dispensed. Attached. In some cases, an aeration mechanism may be provided to blow air into the hopper and to easily discharge the suspended particles.

[0004]

However, the above-mentioned air knocker, vibrator and aeration mechanism are not always sufficient, and there is a problem that the deposits on the inner wall of the hopper cannot be sufficiently removed. The inventor conducted a detailed investigation on the reason why the deposits could not be sufficiently removed. As a result, even if vibration is applied by the above-mentioned means in the powdery material containing a large amount of water, the vibration inside the solidified powdery material is greatly attenuated, so that the vibration is hardly propagated to the entire attached matter. It became clear. in addition,
It has been found that, in the powders containing metal or metal oxide, a highly sticky hydroxide is formed on the surface of the powders due to the attached moisture, and the adhesion between the powders cannot be cut off even by vibration.

[0005] It has also been found that the effect of aeration is completely abolished because the air outlet is blocked by the attached matter.

[0006]

Accordingly, the present inventor has repeatedly studied to solve the powdery material adhering to the inner wall of the hopper by a method other than vibration or air blowing, and conceived to physically scrape off the adhering matter. Thus, the present invention has been achieved. That is, in the granular material storage hopper having an inverted polygonal pyramid-shaped inclined wall at the lower portion, a slide plate that slides up and down along the inclined wall surface on each of the inner lower inclined wall surfaces, The above problem was solved by providing a wiper blade fixed and connected independently of the slide plate.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1A is a sectional view of a hopper for storing granular material according to the present invention. The lower part of the hopper has a shape in which a substantially quadrangular pyramid is inverted, and the granular material is carried in from the upper part, temporarily stored, and then discharged from the lower side as necessary. A slide plate 2 is installed on the inclined wall surface at the lower inside of the hopper 1 for storing powder and granules along the inclined wall surfaces of the hopper 1 so as to be linked to a cylinder 4 provided outside the hopper, so as to slide up and down. It has become. The slide plate 2 has an inverted trapezoidal shape in which the apex of the inverted triangular shape is cut off by the width of the payout opening. Slide plate 2
Immediately above, a plurality of wiper blades 3 are fixedly arranged. The attached matter on the slide plate is scraped off by the wiper blade by the vertical movement of the slide plate.

Here, in order to make it easier to understand the installation state of the slide plate and the wiper blade, FIG. 1B shows only one of the four surfaces of the hopper and the inner surface thereof. The mounting pitch L of the wiper blade 3 is
In order to completely remove the deposits on the slide plate, the stroke of the cylinder 4 (that is, the slide plate 2
Is preferably smaller than the vertical momentum (S). In addition, since the wiper blade 3 needs to minimize the adhesion of the granular material to the wiper blade itself,
It is preferable to make the width as narrow as possible as long as the strength of the wiper blade is allowed.

Here, the wiper blades 3 are arranged in a direction parallel to the direction perpendicular to the vertical movement direction of the slide plate 2 in the present embodiment, but are arranged so as to have a certain angle. Is also good. It goes without saying that the wiper blade may be directly moved up and down instead of the slide plate.

[0010]

According to the present invention, it is possible to completely remove the adhered substance of the granular material which was liable to remain in the hopper because the removal was incomplete so far, and the hopper dispensing efficiency was improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a powder / granule storage hopper of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Powder storage hopper 2 Slide plate 3 Wiper blade 4 Cylinder

Claims (1)

[Claims] 1. A powder storage hopper having an inverted polygonal pyramid-shaped inclined wall at a lower portion thereof, a slide plate which slides up and down along the inclined wall surface on each of the inner lower inclined walls, A hopper for storing powder and granular material, comprising: a wiper blade directly above the plate and fixed and connected independently of the slide plate.