CN2298258Y - Weighing funnel - Google Patents

Abstract

The utility model relates to an improvement on the double-layer vibration weighing funnel used for sieving and discharging, which is below the sinter bin of the blast furnace. The utility model comprises a hollow housing, and a conic hopper that is connected below the housing. The utility model is characterized in that a helicoidal surface baffle is arranged in the housing. The upper edge of the baffle separates the upper opening of the housing into the left and the right parts, whereas the lower edge separates the lower opening into the front and the back parts. The baffle extends downward and separates the conic hopper into the front and the back parts. The front and the back walls of the conic hopper have gates respectively. The utility model is used for replacing the existing weighing funnel and has the advantages of grading the sinter into a furnace when used, evenly mixing the blocks, making the distribution of coal gas stable, reducing the thickness of the belly.

Description

A kind of Weighing funnel

The parts that the utility model relates in the blast furnace feeding device improve, specifically to accepting the improvement of the Weighing funnel of double-deck screen shale shaker discharging under the agglomerate groove that blast furnace disposed.

From the fifties later stage in this century, blast furnace adopts the self-fluxed sinter smelting to obtain good volume increase and saves burnt effect, but agglomerate produces about powder of about 10% in transit, and these powder make the permeability of stock column variation after being loaded into blast furnace, has limited the further raising of furnace processor from face.

Blast furnace from external introduction had the device that secondary sieves under the agglomerate groove in 1985, this device makes agglomerate unload to double-deck screen shale shaker by vibro-feeder, agglomerate is divided into three grades, be that granularity is greater than 15 millimeters, 5 to 15 millimeters and less than 5 millimeters, be returned sintering plant less than 5 millimeters parts, granularity is discharged in the Weighing funnel greater than 15 millimeters and 5 to 15 millimeters parts, is unloaded on belt conveyor through weighing again and sends in the stove.Because the upper sieve net height and sift out leave vibratory screening apparatus greater than 15 millimeters big lump ores the time the initial velocity height, throw far, then thrown nearerly by 5 to 15 millimeters the little lump ore that lower screen sifts out, therefore the side away from vibratory screening apparatus has been assembled big lump ore in Weighing funnel, has assembled little lump ore near a side of vibratory screening apparatus.When the gate of opening Weighing funnel, agglomerate unloads when falling within on the belt conveyor, and it is inhomogeneous to form size-grade distribution, and promptly the big lump ore of belt one side is many, and the little lump ore of opposite side is many.Behind the blast furnace of packing into, big lump ore is on the high side on some zone in furnace throat cross section, and little lump ore is on the high side on other zones, and this will have a strong impact on the distribution of coal gas stream in the blast furnace.So use the blast furnace of secondary sieving equipment under the above-mentioned groove almost all to have a problem, every about 20 days, coal gas begins to occur inclined to one side row, will cause the change of soft heat layer position if deal with improperly, it is thick to form the furnace bosh knot, and need expend a large amount of coke and carry out prepurging and cause the underproduction this moment.

The best approach that addresses the above problem is that big or small lump ore is gone into stove respectively, the imagination that stove is gone in this agglomerate classification is had it long ago, but equipment is huge, occupation of land is many, in screening with have bad luck in the process and will produce powder again, dephasing weighing apparatus may not be worthwhile, thereby classification is gone into stove and is only limited to indivedual manual small furnaces of packing at present.

Task of the present utility model is to utilize existing Weighing funnel, improves a little and just can realize that the agglomerate classification goes into stove, makes globule size even, and coal gas distributes in the blast furnace stablize, and the minimizing furnace bosh is tied thick.

Design of the present utility model is: a kind of Weighing funnel, top is a hollow box body, the bottom connects a taper bucket, it is characterized in that: be provided with a dividing plate in the casing, this dividing plate upper edge is with casing left and right sides two portions that are separated into suitable for reading, two portions before and after the lower edge of dividing plate is separated into the casing end opening, face in the shape of a spiral between the upper edge of dividing plate and the lower edge, dividing plate extends to taper bucket bottom downward vertically the taper bucket also is separated into front and back two portions from the lower edge, the front and rear wall of taper bucket is offered gate respectively.

The exhaust end that the left side of above-mentioned Weighing funnel or right side are installed on double-deck screen shale shaker substitutes original Weighing funnel, unloading the big or small lump ore that falls from vibratory screening apparatus can fall respectively in the left and right sides of dividing plate, be subjected to the effect of dividing plate helicoidal surface then, be contained in respectively by in two portions before and after the separated taper bucket of dividing plate, the front and back gate of taper bucket can be opened and closed by sequence controller control, fall on the belt conveyor before and after big lump ore and the fritter ore deposit in heapsly respectively from the taper bucket, move by the chute of back station and to realize that classification goes into stove; Also big or small lump ore layering can be stacked, have bad luck size granularity uniform mixing behind the stove by the back station.Above-mentioned two kinds of stacking forms on conveying belt have all changed the defective of original size-grade distribution inequality, stablize the distribution of coal gas in the stock column in the stove, prevent that the furnace bosh knot is thick.

Accompanying drawing is the structural representation of the utility model embodiment Weighing funnel.

Present embodiment top is a hollow box body 1, the bottom connects a taper bucket 2, be provided with a dividing plate 5 in the casing 1, the upper edge 6 of dividing plate 5 is with casing left and right sides two portions that are separated into suitable for reading, two portions before and after the lower edge 4 of dividing plate 5 is separated into the casing end opening, be a helicoidal surface between the upper edge 6 of dividing plate 5 and the lower edge 4, dividing plate 5 from the lower edge 4 extend to downward vertically taper bucket 2 bottoms with taper bucket 2 also be divided into before and after two portions, the front and rear wall of taper bucket 2 is offered gate 3 respectively.

Claims (1)

1. A kind of Weighing funnel, top is a hollow box body, the bottom connects a taper bucket, it is characterized in that: be provided with a dividing plate in the casing, this dividing plate upper edge is casing left and right sides two portions that are separated into suitable for reading, two portions before and after the lower edge of dividing plate is separated into the casing end opening, face in the shape of a spiral between the upper edge of dividing plate and the lower edge, dividing plate extends to taper bucket bottom downward vertically the taper bucket also is separated into front and back two portions from the lower edge, the front and rear wall of taper bucket is offered gate respectively.