CN205217322U

CN205217322U - Coke screening process units

Info

Publication number: CN205217322U
Application number: CN201520926726.8U
Authority: CN
Inventors: 徐吉国; 马银华; 马富刚
Original assignee: Angang Steel Co Ltd
Current assignee: Angang Steel Co Ltd
Priority date: 2015-11-19
Filing date: 2015-11-19
Publication date: 2016-05-11
Anticipated expiration: 2025-11-19

Abstract

The utility model relates to a coke screening plant in coking technology field is arranged by one -level single layer structure grate, second grade individual layer cantilever screen mesh vibration sieve and tertiary double -deck cantilever screen mesh vibration screen sizing to be connected through belt conveyor, chute between, compared with the prior art, the beneficial effects of the utility model are that: 1 )Solve the burnt system of sieve fortune steady operation problem, can provide stable coke supply for the iron -smelting process, 2 )Reduce equipment failure rate, improved shale shaker life, shortened maintenance duration, improved screening efficiency, reduced cost of maintenance, 3 )Because leaning angle of screen increases, make the mobile speed of material accelerate, thickness of bed reduces, the layering is effectual, the bed of material is thin simultaneously, has also reduced unit area load, messenger vibrating motor is fallen for 5.5kW by former 15kW, greatly reduced power consumption, reduced the running cost.

Description

A kind of coke-screening arrangement division technique device

Technical field

The utility model relates to the sieve burnt technology of fortune and the equipment in coking technology field, particularly relates to a kind of coke-screening arrangement division technique device.

Background technology

Coking portion of certain steel enterprise, the design of coke-screening arrangement division technique is divided into Pyatyi to sieve, and is provided with 2665 vibratory sieves (single-deck screen), 2148 vibratory sieves (single-deck screen) and 1836 vibratory sieves (double deck screen).Coke is after 2665 vibratory sieves, oversize is large lump coke, screenings carries out regrading through 2148 vibratory sieves again, oversize is middle lump coke, and screenings sieves through 1836 vibratory sieves again, and upper strata oversize is nut coke, lower floor's oversize is that granule is burnt, screenings is coke breeze, and after screening, each kind coke is admitted to corresponding coke bin respectively, is finally transported outward to be sold to client or to transport ironmaking portion outward through belt by automobile and goes ironmaking.

Traditional individual layer, double-deck screen shale shaker all adopt closed screen cloth, in actual production process, there is following defect:

1) 2665 vibratory sieves (single-deck screen) be screen size 65 × 26mm (front), the common material of 67 × 28mm (reverse side) sieve, not wear-resisting, coefficient of friction is large, coke drops to sieve from the free landing of strap end and easily causes cloth inequality, compass screen surface blocking, and noise is large, dust pollution large, screening efficiency is low;

2) 2148 vibratory sieves (single-deck screen) are screen size 44 × 27 (front)/46 × 29 (reverse side) common sieve; 1836 vibratory sieves (double deck screen) are upper strata sieve aperture 41 × 15 (front)/43 × 17 (reverse side), lower floor's sieve aperture 41 × 12 (front)/43 × 15 (reverse side) common sieve, screen angle little (15 °), therefore the fault such as the blocking of frequent generation coke or sieve damage, maintenance of equipment frequency is high, maintenance time is long, can not meet Production requirement, the stable operation of impact sieve coke transport system;

3) vibratory sieve is short for service life, and maintenance of equipment cost is high;

4) vibrating motor power is large, and energy consumption is high, and operating cost is high.

Summary of the invention

For overcoming prior art defect, the technical problem that the utility model solves is to provide a kind of coke-screening arrangement division technique device, sieve coke transport system stable operation problem can be solved, reduce equipment failure rate, improve vibratory sieve service life, shorten maintenance time, improve screening efficiency, reduce maintenance cost, reduce energy consumption and operating cost.

In order to achieve the above object, the utility model realizes by the following technical solutions:

A kind of coke-screening arrangement division technique device, comprises one-level sieve, secondary sieve and three grades of sieves, it is characterized in that, described one-level sieve, secondary sieve, three grades of sieve classifications are arranged, between by belt conveyer, chute connection.

Described one-level sieve is the castor bar grizzl(e)y of single layer structure, and the lower interval of its grating spacing employing is expand formula design gradually, grating material selection diabase than upper interval increasing 0-5mm's from top to bottom, and employing metallurgical casting forms.

Described secondary sieve is the Therefore cantilever rod deck vibrating of single layer structure, and three grades of sieves are double-deck Therefore cantilever rod deck vibrating.

Compared with prior art, the beneficial effects of the utility model are:

1) solve sieve coke transport system stable operation problem, can be the coke supply that Iron-smelting provides stable;

2) reduce equipment failure rate, improve vibratory sieve service life, shorten maintenance time, improve screening efficiency, reduce maintenance cost;

3) because screen angle strengthens, the flowing velocity of material is accelerated, thickness of feed layer reduces, layered effect is good, and the bed of material is thin simultaneously, also reduces unit are load, make vibrating motor can change 5.5kW into by former 15kW, greatly reduce power consumption, reduce operating cost.

Accompanying drawing explanation

Fig. 1 is the schematic flow sheet that the utility model process unit is arranged;

Fig. 2 is the structural representation of individual layer compass screen surface;

Fig. 3 is the effect schematic diagram of N number of individual layer compass screen surface superposition back boom vibration screen.

In figure: 1-one-level sieve 2-secondary sieve 3-tri-grades sieve

Detailed description of the invention

Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described further:

See Fig. 1-3, the utility model relates to a kind of coke sieving device, comprises one-level sieve 1, secondary sieve 2 and three grades of sieves 3, described one-level sieve 1, secondary sieve 2, three grades of sieve 3 hierarchical arrangement, between connected by belt conveyer, chute.

Described one-level sieve 1 is the castor bar grizzl(e)y of single layer structure, the lower interval of its grating spacing employing is expand formula design gradually than upper interval increasing 0-5mm's from top to bottom, both alleviated the resistance of material in screening process, and prevented again compass screen surface from blocking, and guaranteed to produce smoothly, coke freely slips over the level and smooth compass screen surface be made up of grating from strap end, be evenly distributed, screening efficiency is high, does not need any additionaling power equipment, and noise is low, dust pollution is few; Grating material selection diabase is primary raw material, adopts metallurgical casting to form, has the characteristics such as wearability is high, intensity is high, wearing coefficient is little.

Described secondary sieve 2 is the Therefore cantilever rod deck vibrating of single layer structure, and three grades of sieves 3 are double-deck Therefore cantilever rod deck vibrating.

Described Therefore cantilever rod deck vibrating is formed by stacking (see Fig. 3) by the individual layer compass screen surface (see Fig. 2) of N number of strip opening, sifting-bed inclination A is designed to 25 °-30 °, be greater than common sifting-bed inclination, the flowing velocity of material is accelerated, thickness of feed layer reduces, layered effect is good, the bed of material is thin simultaneously, also reduces unit are load, makes vibrating motor can change 5.5kW into by former 15kW, economize energy, reduces operating cost.

Claims

1. a coke-screening arrangement division technique device, is characterized in that, comprises one-level sieve, secondary sieve and three grades of sieves, and described one-level sieve, secondary sieve, three grades of sieve classifications are arranged, between by belt conveyer, chute connection; Described one-level sieve is the castor bar grizzl(e)y of single layer structure, and the lower interval of its grating spacing employing is expand formula design gradually, grating material selection diabase than upper interval increasing 0-5mm's from top to bottom, and employing metallurgical casting forms; Described secondary sieve is the Therefore cantilever rod deck vibrating of single layer structure, and three grades of sieves are double-deck Therefore cantilever rod deck vibrating.