CN217313749U

CN217313749U - Broken sorting device of steel scrap for steelmaking

Info

Publication number: CN217313749U
Application number: CN202221148651.1U
Authority: CN
Inventors: 陈锋
Original assignee: Yunnan Qujing Iron And Steel Group Fenghuang Iron And Steel Co ltd
Current assignee: Yunnan Qujing Iron And Steel Group Fenghuang Iron And Steel Co ltd
Priority date: 2022-05-13
Filing date: 2022-05-13
Publication date: 2022-08-30
Anticipated expiration: 2032-05-13

Abstract

The utility model discloses a broken sorting device of steel scrap for steelmaking, including broken jar and the magnetic drum conveyer that is located broken jar below, the center department at broken tank deck portion is provided with the charge door, the charge door below is provided with the top and divides the flitch, the below of two blanking ends of top branch flitch respectively is provided with one and goes up lower extreme open-ended cracker, the interval is provided with two broken axles about in the cracker, all be provided with broken sword on the every broken axle, all be provided with the air intake on the broken jar lateral wall of every cracker below one side, bottom interval in the broken jar is provided with two risers, the height that highly is less than the air intake of riser, space between two risers is light miscellaneous material save area, the below of magnetic drum conveyer blanking end is provided with letter sorting jar and heavy matter miscellaneous material save area respectively. The utility model discloses impurity is clear away totally, and crushing effect is good, and work efficiency is high, has apparent economic value and social value.

Description

Broken sorting device of steel scrap for steelmaking

Technical Field

The utility model relates to a steel smelting technical field, concretely relates to broken sorting device of steel scrap for steelmaking.

Background

In our country, the mainstream production process of steel can be divided into two flows, one is a long flow from iron ore and coke to pig iron and then to steel, and the other is a short flow from iron-containing waste resources to steel, the former flow is longer, and needs to use iron ore as a raw material, while iron ore is a nonrenewable resource, and with the shortage of supply of ordinary iron ore at home and abroad, the price is gradually increased, and the use of a large amount of iron ore will obviously increase the production cost of iron making, so that the use of iron-containing waste resources to make steel becomes the choice of the steel making industry.

Before adopting iron-bearing waste resources to make steel, need sort earlier the scrap steel, it is broken, preceding stage processing such as preheat, quality and efficiency for guaranteeing follow-up electric stove steelmaking, the purpose of letter sorting is according to the size of scrap steel, requirements such as weight are graded, be convenient for subsequent transportation and smelting, and detach the plastics that mix with in the scrap steel, paper, wood, impurity such as stone, prevent that these impurity from influencing the quality of follow-up steel, broken purpose then is the volume that reduces the scrap steel, be convenient for improve the smelting efficiency of scrap steel. In the prior art, sorting work after part of scrap steel is recovered is still carried out manually, so that the labor intensity is high, time and labor are wasted, the sorting efficiency is low, the sorting efficiency is poor, and the impurity removing effect is poor; secondly, the prior art has poor crushing performance on the scrap steel and low crushing efficiency, and can not well meet the requirements of the prior scrap steel making. Therefore, it is objectively needed to develop a crushing and sorting device for steel-making scrap steel, which can clean impurities, has a good crushing effect and high working efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an impurity is clear away totally, and crushing effect is good, and the broken sorting device of steel scrap is used in steelmaking that work efficiency is high.

The utility model aims at realizing like this, including broken jar and the magnetic drum conveyer that is located broken jar below, the center department at broken tank top is provided with the charge door, it divides the flitch to be provided with the top that is down the V-arrangement in the broken jar of charge door below, the top divides the below of two blanking ends of flitch to respectively be provided with one and goes up lower extreme open-ended cracker, the interval is provided with two broken axles about in the cracker, all be provided with broken sword on the every broken axle, all be provided with the air intake on the broken jar lateral wall of every cracker below one side, bottom interval in the broken jar is provided with two risers, the height that highly is less than the air intake of riser, space between two risers is light miscellaneous material storage area, bottom between every riser and the corresponding broken jar lateral wall all is provided with the blanking mouth, the below of magnetic drum conveyer blanking end is provided with letter sorting jar and heavy matter miscellaneous material storage tank respectively.

Further, two screen cloth are arranged in the sorting tank at intervals from top to bottom, the cross-sectional shape of the screen cloth is in the shape of an arc with a concave middle part, a discharging pipe is arranged at the center of each screen cloth, and the discharging end of each discharging pipe stretches out of the sorting tank after being bent.

Furthermore, a scraping mechanism is arranged above each screen, the scraping mechanism comprises a motor and an inverted U-shaped connecting rod arranged at the end part of an output shaft of the motor, two scraping plates are respectively arranged at two end parts of the inverted U-shaped connecting rod, and the lower surfaces of the scraping plates are matched with the upper surfaces of the screens.

Furthermore, an exhaust pipe is arranged on the side wall of the crushing tank above the crusher, and a gas purifier is arranged on the exhaust pipe.

Further, a plurality of blanking holes are processed on the top distributing plate, a lower distributing plate in an inverted V shape is arranged below the two breakers, and two blanking ends of the lower distributing plate are respectively located above the two blanking ports.

Furthermore, the upper end slope of cracker is provided with anticollision baffle.

Furthermore, a plurality of spikes are arranged on the side surface of the anti-collision baffle plate facing the crusher.

Furthermore, the two crushing shafts in the same crusher rotate in opposite directions.

When the utility model is used for crushing and sorting the scrap steel, firstly, the scrap steel is sent into a crushing tank from a feeding port, the scrap steel is divided into two parts by a top material dividing plate and respectively falls into two crushers, a crushing shaft is started, the crushing shaft drives a crushing cutter to rotate, the crushing cutter crushes the scrap steel in the rotating process, the scrap steel sequentially falls under the action of gravity after being crushed twice, and simultaneously ventilates an air inlet to control the air volume, so that when air blows towards the falling scrap steel, light impurities such as plastics, paper, wood and the like mixed in the scrap steel are taken away by the air and fall into a light impurity storage area, the scrap steel with relatively heavy quality continuously falls down, falls onto a magnetic roller conveyor from a falling port, the scrap steel runs along with the magnetic roller conveyor, when the scrap steel reaches a blanking end of the magnetic roller conveyor, the scrap steel with magnetism is adsorbed on the conveyor belt of the magnetic roller conveyor and continuously moves for a distance, then the waste steel falls into a sorting tank for sorting to obtain the waste steel with various specifications, and the nonmagnetic substances directly fall into a heavy miscellaneous material storage tank. In the process, the scrap steel is sequentially subjected to air separation and magnetic separation to respectively remove light impurities and heavy impurities mixed in the scrap steel, the impurities are thoroughly and cleanly removed, and the scrap steel with higher purity can be obtained; secondly, the two-stage crushing mode is adopted to crush the scrap steel, so that the scrap steel is better crushed, the crushing effect is better, the whole treatment process can automatically and smoothly run continuously, and the working efficiency is higher. The utility model discloses impurity is clear away totally, and crushing effect is good, and work efficiency is high, has apparent economic value and social value.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

in the figure: 1-a crushing tank, 2-a magnetic roller conveyor, 3-a feeding port, 4-a top material distributing plate, 5-a crusher, 6-a crushing shaft, 7-a crushing cutter, 8-an air inlet, 9-a vertical plate, 10-a light sundry storage area, 11-a blanking port, 12-a sorting tank, 13-a heavy sundry storage tank, 14-a screen, 15-a discharging pipe, 16-a motor, 17-an inverted U-shaped connecting rod, 18-a scraping plate, 19-an exhaust pipe, 20-a gas purifier, 21-a lower material distributing plate, 22-an anti-collision baffle and 23-a sharp spine.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, but the present invention is not limited in any way, and any changes or improvements based on the present invention are all within the protection scope of the present invention.

As shown in figure 1, the utility model comprises a crushing tank 1 and a magnetic drum conveyor 2 positioned below the crushing tank 1, the magnetic drum conveyor 2 is the existing equipment and can separate magnetic materials from non-magnetic materials, a feed inlet 3 is arranged at the center of the top of the crushing tank 1, a reversed V-shaped top material distributing plate 4 is arranged in the crushing tank 1 below the feed inlet 3, a crusher 5 with an upper end and a lower end open is respectively arranged below two blanking ends of the top material distributing plate 4, two crushing shafts 6 are arranged in the crusher 5 at intervals up and down, a crushing knife 7 is arranged on each crushing shaft 6, the structures of the crushing shafts 6 and the crushing knives 7 are the prior art, when in operation, a driving device is arranged on the crusher 5 to drive the crushing shafts 6 to rotate, the crushing knives 7 are used for crushing waste steel, an air inlet 8 is arranged on the side wall of the crushing tank 1 at one side below each crusher 5, the bottom interval in broken jar 1 is provided with two risers 9, the height that highly is less than air intake 8 of riser 9, space between two risers 9 is light miscellaneous material storage area 10, during the in-service use, set up the bin outlet door on the broken jar 1 lateral wall of light miscellaneous material storage area 10 one side, when impurity in light miscellaneous material storage area 10 piles up to certain degree, discharge it through arranging the bin outlet door, the bottom between every riser 9 and the corresponding broken jar 1 lateral wall all is provided with blanking mouth 11, the below of 2 blanking ends of magnetic drum conveyer is provided with letter sorting jar 12 and heavy miscellaneous material storage tank 13 respectively, letter sorting jar 12 and heavy miscellaneous material storage tank 13 are the open existing equipment in upper end, letter sorting jar 12 is used for sorting the scrap steel, obtain the scrap steel of various specifications, and non-magnetic substance then directly falls heavy miscellaneous material storage tank 13.

When the utility model is used for crushing and sorting the scrap steel, firstly, the scrap steel is sent into a crushing tank 1 from a feed inlet 3, the scrap steel is divided into two parts by a top material dividing plate 4 and respectively falls into two crushers 5, a crushing shaft 6 is started, the crushing shaft 6 drives a crushing cutter 7 to rotate, the crushing cutter 7 crushes the scrap steel in the rotating process, the scrap steel sequentially falls under the action of gravity after being crushed twice, and simultaneously ventilates an air inlet 8, the air quantity is controlled, so that when the air blows towards the falling scrap steel, light impurities such as plastics, paper, wood and the like mixed in the scrap steel are carried away by the air and fall into a light impurity storage area 10, the scrap steel with relatively heavy quality continuously falls down and falls onto a magnetic roller conveyor 2 from a material falling port 11, the scrap steel runs along with the magnetic roller conveyor 2, when the scrap steel reaches the material falling end of the magnetic roller conveyor 2, the scrap steel with relatively heavy quality is adsorbed on the conveyor 2 to continuously move for a distance, then fall into a sorting tank 12 for sorting to obtain scrap steel with various specifications, and the nonmagnetic substances directly fall into a heavy sundry material storage tank 13. In the process, the scrap steel is subjected to wind separation and magnetic separation in sequence to respectively remove light impurities and heavy impurities mixed in the scrap steel, the impurities are thoroughly and cleanly removed, and the scrap steel with higher purity can be obtained, so that the quality of subsequent electric furnace steelmaking is improved; secondly, the two-stage crushing mode is adopted to crush the scrap steel, so that the scrap steel is better crushed, the crushing effect is better, the whole treatment process can automatically and smoothly run continuously, and the working efficiency is higher.

Two screen cloth 14 are provided with at the upper and lower interval in the letter sorting jar 12, and screen cloth 14's cross sectional shape is middle recessed arc, and every screen cloth 14's center department all is provided with one and arranges material pipe 15, arranges the discharge end of material pipe 15 and bends the outside of stretching out letter sorting jar 12 back, and the steel scrap gets into letter sorting jar 12 back, successively obtains large granule steel scrap, well granule steel scrap and tiny particle steel scrap, the subsequent transportation and the use of the steel scrap of being convenient for respectively.

Every screen cloth 14's top all is provided with scraping mechanism, scraping mechanism includes motor 16 and the shape of falling U connecting rod 17 of setting at motor 16 output shaft tip, two tip of the shape of falling U connecting rod 17 respectively are provided with a scraper blade 18, the lower surface of scraper blade 18 is identical with the upper surface of screen cloth 14, motor 16 drives scraper blade 18 after starting and rotates, drive the steel scrap motion when scraper blade 18 rotates, promote the mesh whereabouts of tiny particle steel scrap from screen cloth 14, improve the letter sorting efficiency of steel scrap, prevent that the steel scrap from piling up on screen cloth 14, and the large granule steel scrap is then followed row material pipe 15 and is discharged.

Be provided with blast pipe 19 on the broken jar 1 lateral wall of cracker 5 top, be provided with gas purifier 20 on the blast pipe 19, gas purifier 20 is current equipment for purify gas and remove dust, prevent the atmosphere pollution, the scrap steel can produce a large amount of dusts at the in-process of breakage and selection by winnowing, and these dusts pass through blast pipe 19 and get into gas purifier 20, discharge after removing dust.

A plurality of blanking holes are processed on the top material distributing plate 4, a lower material distributing plate 21 in an inverted V shape is arranged below the space between the two crushers 5, two blanking ends of the lower material distributing plate 21 are respectively positioned above the two blanking holes 11, a certain amount of fine particles are contained in the scrap steel, the fine particles can be directly used without being crushed, when the scrap steel falls on the top material distributing plate 4, the fine particles in the scrap steel fall through the blanking holes, the working load of the follow-up crushers 5 is reduced, the working efficiency is improved, and after the fine particles fall on the lower material distributing plate 21, the fine particles fall from the two blanking ends of the lower material distributing plate 21 and are blown by wind in the falling process to remove light impurities.

The upper end slope of cracker 5 is provided with anticollision baffle 22, produce the striking with broken sword 7 when the scrap steel whereabouts, under the striking effect of broken sword 7, part scrap steel can upwards fly, collide with the jar wall and the tank deck of broken jar 1, can cause the damage to jar wall and tank deck, shorten the life of broken jar 1, and through anticollision baffle 22's setting, can avoid the emergence of above-mentioned condition, can receive stopping of anticollision baffle 22 after the scrap steel flies to improve the life of broken jar 1.

Be provided with a plurality of spines 23 on the anticollision baffle 22 side towards knapper 5, the point portion of spine 23 is thinner, and when the tip contact of steel scrap and spine 23, area of contact between the two is less, and spine 23 is great to the effort of stress point on the steel scrap, promotes the breakage of steel scrap, improves the crushing efficiency of steel scrap.

Two broken axle 6 rotation direction in same knapper 5 are opposite, broken axle 6 rotation direction is opposite, then the broken sword 7 rotation direction that sets up on two broken axles 6 is also opposite, after the scrap steel falls into corresponding knapper 5 from top branch flitch 4, the broken sword 7 that is located the top can produce violent collision with the scrap steel, reach the broken purpose of scrap steel, fall afterwards, collide once more with broken sword 7 of below, and because broken sword 7 rotation direction is opposite, can change the atress direction when the scrap steel receives the collision, thereby promote the crushing efficiency of scrap steel.

Claims

1. A crushing and sorting device for steelmaking scrap comprises a crushing tank (1) and a magnetic drum conveyor (2) positioned below the crushing tank (1), and is characterized in that a feeding port (3) is arranged at the center of the top of the crushing tank (1), an inverted V-shaped top material distributing plate (4) is arranged in the crushing tank (1) below the feeding port (3), a crusher (5) with an upper end and a lower end opened is respectively arranged below two blanking ends of the top material distributing plate (4), two crushing shafts (6) are arranged in the crusher (5) at intervals from top to bottom, a crushing knife (7) is arranged on each crushing shaft (6), an air inlet (8) is arranged on the side wall of the crushing tank (1) on one side below each crusher (5), two vertical plates (9) are arranged at intervals at the bottom in the crushing tank (1), and the heights of the vertical plates (9) are lower than the heights of the air inlets (8), the space between two risers (9) is light miscellaneous material reservoir (10), and the bottom between every riser (9) and corresponding broken jar (1) lateral wall all is provided with blanking mouth (11), the below of magnetic drum conveyer (2) blanking end is provided with letter sorting jar (12) and heavy miscellaneous material reservoir (13) respectively.

2. The steel-making scrap crushing and sorting device according to claim 1, wherein two screens (14) are arranged in the sorting tank (12) at intervals up and down, the cross section of each screen (14) is in an arc shape with a concave middle, a discharging pipe (15) is arranged at the center of each screen (14), and the discharging end of each discharging pipe (15) is bent and then extends out of the sorting tank (12).

3. The steel-making scrap crushing and sorting device according to claim 2, wherein a scraping mechanism is arranged above each screen (14), the scraping mechanism comprises a motor (16) and an inverted U-shaped connecting rod (17) arranged at the end part of an output shaft of the motor (16), two scraping plates (18) are respectively arranged at two end parts of the inverted U-shaped connecting rod (17), and the lower surfaces of the scraping plates (18) are matched with the upper surfaces of the screen (14).

4. The steel-making scrap crushing and sorting device according to claim 1, wherein the side wall of the crushing tank (1) above the crusher (5) is provided with an exhaust pipe (19), and the exhaust pipe (19) is provided with a gas purifier (20).

5. The steel-making scrap crushing and sorting device according to claim 1, wherein a plurality of blanking holes are formed in the top material distributing plate (4), a lower material distributing plate (21) in an inverted V shape is arranged below the space between the two crushers (5), and two blanking ends of the lower material distributing plate (21) are respectively positioned above the two blanking ports (11).

6. The steel-making scrap crushing and sorting device according to claim 1, wherein the upper end of the crusher (5) is provided with an anti-collision baffle plate (22) in an inclined manner.

7. The device for crushing and sorting the steel-making scraps according to claim 6, wherein a plurality of spikes (23) are provided on the side of the anti-collision baffle (22) facing the crusher (5).

8. The steel-making scrap crushing and sorting device according to claim 1, wherein the two crushing shafts (6) in the same crusher (5) rotate in opposite directions.