SU1407515A1 - Apparatus for dehydration of loose materials - Google Patents

Abstract

The invention relates to the treatment of industrial wastewater of metallurgical industry. The purpose of the invention is to simplify the design and improve the quality of the dehydrated material. The device comprises a rectangular in plan vertical bunker 1 with a pyramidal bottom 2 equipped with a paddle gate 3. Inside the bunker case along its contour at a distance from the walls of the section. A drainage mesh 4 with a cavity (P) 5 is formed. In the bunker height, the trays (L) 6 are triangular in shape in staggered order, with the ends of L 6 communicating with P 5 and the base L 6 elements 7 in the form of grids. 2 Il. i SL

Description

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The invention relates to the field of purification of industrial wastewater of metallurgical industry, namely, dewatering and compaction of scale, formed during the hot rolling of metal, and can be used in the circulating water supply system of the rolling mill after the first secondary sedimentation tanks.

The purpose of the invention is to improve the quality of the dehydrated material and forgiveness of the structure.

FIG. 1 shows a bunker, top view, in FIG. 2 - the same, a view of a flaw, a section.

The proposed device consists of 3 rectangular in plan vertical bunker 1 with a pyramidal bottom 2, equipped with a paddle gate. A drainage net 4 is placed inside the bunker housing 1 along its periphery at a distance from the walls to form cavity 5. According to the height of the bunker

in staggered order, the trays 6 are triangular in shape, set with their top upwards. The ends of the lots are communicated with cavity 5, since

At the junctions of the trays 6 with the drainage grid 4, the latter has gaps, corresponding to the section of the trays, the basis of the trays 6 are filtering elements 7 in the form of grids. The feed to the bunker of the initial scum is produced through a pipe. 8 liters of drainage water is removed. For the bunker, there is a pipe 9, equipped with a valve 10. A pipe 11, equipped with a valve 12, is supplied with warm air to drain the scale. The filter elements 7 and the screen C are flushed through pipe 13, equipped with a valve 14. The compacted scale from the bunker is inserted through the loading nozzle 15 and the loading nozzle 16 of the blade. 3

A device for dewatering slush materials such as scale, works as follows.

Initial scale-containing pulp and | 3 secondary clarifiers are fed into the bunker by a grab through pipe 8. When a stream of pulp falls, it encounters the tops of triangular trays

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In the process of settling and compaction of the scale, the water that penetrates from it, penetrates well through the filtering elements 7 into the trays 6, flows through the ends of the trays, as well as through the grid 4 into the cavity 5 formed by the bunker body 1 and the grid 4 from which the pipe

9 with the open valve 10 is removed from the hopper.

After the hopper is filled with pulp, it is stopped and the pulp is allowed to stand for 3-5 days depending on its characteristics.

After stopping the entry of drainage water into the drain pipe 9, the valve 10 is closed, opened behind the slider 12, and pipe 11 is supplied with warm air to dry the scale and simultaneously flush the filter elements. From the conical part of the pyramidal bottom 2, water is descaled -. goes up and out. removed by trays 6.

The compacted and dried scale is removed from the hopper through the paddle gate 3. A vibrator can be installed if necessary.

The filter elements 7 and the drainage grid 4 are washed (after emptying the bunker) with pressurized water supplied through pipe 13. With the valve 14 open and valves 10 and 12 closed, the water after washing is discharged through the paddle gate 3.

The proposed device for the dewatering of bulk materials has

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A simple design solution that does not require highly qualified personnel services reduces the duration of the dewatering process and compaction of the scale and reduces the quality of the dehydrated material. In addition, it is possible to flush the filter elements to remove a predetermined amount of scale by applying a paddle gate, as well as drying the scale by applying a warm, compressed air.

The form of the invention

A device for dewatering bulk materials containing direct

6 about which it breaks, raslag a coal bunker with pyramidal days

 and dissolve, changing with the structure of the pulp due to the disruption of H1 (1I sv between scale and water. After 12 and 14 at this time are closed.

filter element placed inside the bunker, which is i4To different, in order to improve the quality of the dehydrated material and

the corner bunker with pyramidal days -

filter element placed inside the bunker, which is i4To different, in order to improve the quality of the dehydrated material and

31407515

simplifying the design, it is equipped with a drainage grid, the filtering element is made in the form of triangular trays, installed vertically upwards and placed by Rus in the height of bun15 6

Compiled by T. Ledneva Editor A. Techred M. Didyk Proofreader E. Lonchakova

Order 3238/6

Circulation 642

 VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

staggered in a staggered order, with the ends of the chutes communicating with the cavity formed by the walls of the bunker and the drainage grid located along its

contour.

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Subscription

Claims (1)

Claim A device for dewatering bulk materials, containing a rectangular hopper with a pyramidal bottom and a filter element located inside the hopper, characterized in that> in order to improve the quality of the dehydrated material and simplify the design, it is equipped with a drainage mesh, the filter element is made in the form of triangular shape trays Installed with the top up and placed in tiers along the height of the bunker in a checkerboard pattern, while the ends of the trays are in communication with the cavity formed by the walls of the bunker and a drained mesh, laid along its contour. Figure 1