CN215313734U - Integrated equipment for simultaneously dispersing, screening and grading green pellets for conveying - Google Patents

Abstract

The utility model discloses integrated equipment for diffusing, screening and simultaneously carrying out graded conveying on green pellets, which comprises a rack, a screening roller, a screening box body, a base, a green pellet conveying belt, a qualified green pellet conveying belt, a material returning conveying belt and a speed regulating motor, wherein the screening roller is arranged on the rack; the method is characterized in that: an upper screen roller set, a reverse screen roller set and a lower screen roller set which are matched with the lower opening of the feeding hopper are arranged in the cavity of the screening box body, and the upper screen roller set is provided with six screen rollers; the reverse screen roller group is provided with seven screen rollers; the lower screen roller group is provided with five screen rollers; the rotating directions of the screen rollers in the upper screen roller group and the lower screen roller group are consistent with the running direction of the green pellets, and the rotating directions of the screen rollers in the reverse screen roller group are opposite to the running direction of the green pellets; the qualified green pellet conveying belt is positioned below the upper screen roller group, the reverse screen roller group and the lower screen roller group; the material returning conveying belt is positioned below the rear end of the lower screen roller group. The roller screen device has the advantages of full screening diffusion, improved grading and screening effects and easiness in improvement on the basis of the conventional roller screen device.

Description

Integrated equipment for simultaneously dispersing, screening and grading green pellets for conveying

Technical Field

The utility model relates to an improvement of green pellet screening equipment for the metallurgical industry, in particular to integrated equipment for diffusing, screening and grading conveying of green pellets.

Background

The pellets are produced by adding an appropriate amount of additives into fine ground iron fine powder or other iron-containing fine powder, adding water for mixing, and pelletizing by a pelletizer according to a set specification with the granularity of 8-16 mm, and are generally called green pellets; the green pellets are dried, roasted and consolidated into a spherical iron-containing raw material with certain strength and metallurgical performance, and the raw material is used for steel smelting. In the actual pelletizing process, although the pellet particle size specification is set, because the operation of equipment has errors, the green pellets produced by the pelletizing machine also have particle size errors, while the green pellets used for steel smelting require that the particle size is 8-16 mm, and the green pellets exceeding 16mm are often burnt to cause certain influence on steel smelting due to insufficient burning during roasting, so that the metallurgical index is reduced, therefore, the green pellets with the particle size larger than 16mm need to be screened out, and the green pellets with the particle size smaller than 8mm can be screened out together with the green pellets smaller than 16mm due to the absence of burning-proof problem. At present, the used equipment of green pellet screening adopts the shale shaker greatly, including putting screen cloth and vibrator to one side, the mesh of putting the screen cloth to one side is 16mm, from the green pellet of pelletizer output, carry to put the screen cloth to one side, through vibrations, the granule leaks down through the green pellet that is less than 16mm, and the particle diameter is greater than 16 mm's green pellet, exports from the lower extreme of putting the screen cloth to being less than 16 mm's green pellet with being greater than 16 mm's green pellet separation with the particle diameter, adopt the not enough of this kind of equipment screening green pellet to lie in: due to the adoption of vibration, the pellet crushing rate is high, the powder is more, and the qualified green pellets and the unqualified green pellets cannot be respectively conveyed, so that the labor efficiency is low.

It can be known through the retrieval, in order to improve the not enough of reciprocating sieve screening mode, there have been many reports about green pellet screening, for example chinese utility model patent "roller screening machine" that wangrun is sensitized in 2005.12.23, patent number is CN200520135475.8, it discloses including components such as screen frame support, lower screen frame, go up the screen frame, the screen roller, gear motor, oversize baffle, crushing roller support, the tile box, movable bearing seat, fixed bearing seat, spring, every screen roller all is equipped with a gear motor rather than the soft hookup, the screen frame comprises double-deck screening structure of last screen frame and lower screen frame, the screen roller end on the upper screen frame is provided with two crushing rollers of reverse operation, terminal crushing roller passes through tile box suspension type and installs on the crushing roller support fixed with the upper screen frame, its movable bearing seat is connected with the fixed bearing seat of another crushing roller with the spring. The beneficial effect of this design lies in: the oversize green pellets can be separated and crushed; the defects are as follows: because the crushing roller is added and the motors are increased, the energy consumption is improved and the content of powder is increased; because the rotating directions of the roller bodies are the same, the green pellets cannot be fully dispersed in the screening process, so that a large amount of qualified green pellets are mixed with unqualified green pellets to be screened out and enter a pelletizer to be pelletized again, and the production load of the pelletizer is increased; because the angle of the screen roller is difficult to adjust and belongs to a fixed type, when the treatment capacity is larger, the mixing phenomenon of qualified green pellets and unqualified green pellets is serious, and the screening effect is difficult to improve; because the speed regulating motor is arranged at the end of each screen roller shaft, the power consumption is increased, the difficulty of unified adjustment of the rotating speed is increased, and in addition, the classified conveying can not be realized.

Disclosure of Invention

The utility model aims to provide the integrated equipment for diffusing, screening and grading conveying of the green pellets, which not only can screen the green pellets according to the requirement of the granularity specification, but also can fully diffuse the green pellets and improve the grading efficiency, and simultaneously can respectively convey the qualified green pellets and the unqualified green pellets, has good screening effect and excellent dispersion performance, and is easy to improve on the basis of roller screening equipment.

In order to achieve the above purposes, the technical scheme adopted by the utility model is as follows: the integrated equipment for diffusing, screening and simultaneously carrying the green pellets in a grading manner comprises a rack, a screen roller, a screening box body, a base, a green pellet conveyor belt, a qualified green pellet conveyor belt, a material returning conveyor belt and a speed regulating motor, wherein the rack and the screening box body are fixedly arranged on the base; the method is characterized in that: two first support columns, two second support columns and two third support columns which are mutually symmetrical are fixedly arranged in the cavity of the screening box body; an upper screen roller set matched with a lower opening of the feeding hopper is fixedly arranged between the first support column and the inner wall of the front end of the screening box body, a reverse screen roller set is fixedly arranged between the second support column and the first support column, a lower screen roller set is fixedly arranged between the third support column and the second support column, a first speed regulating motor is fixedly arranged at the upper end of the first support column, a second speed regulating motor is fixedly arranged at the upper end of the second support column, and a third speed regulating motor is fixedly arranged at the upper end of the third support column; the upper screen roller group consists of two symmetrical screen roller mounting plates and six mutually parallel screen rollers, the screen rollers are rotatably arranged between the two screen roller mounting plates, and a first speed regulating motor is connected with the screen rollers of the upper screen roller group for transmission through a coupler and a transmission chain; the reverse screen roller group consists of two symmetrical screen roller mounting plates and seven mutually parallel screen rollers, the screen rollers are rotatably arranged between the two screen roller mounting plates, and a second speed regulating motor is connected with the screen rollers of the reverse screen roller group for transmission through a coupler and a transmission chain; the lower screen roller group consists of two symmetrical screen roller mounting plates and five screen rollers which are parallel to each other, the screen rollers are rotatably arranged between the two screen roller mounting plates, and a third speed regulating motor is connected with and drives the screen rollers of the lower screen roller group through a coupler and a transmission chain; the distance between two adjacent screen rollers in the upper screen roller group, the reverse screen roller group and the lower screen roller group is 16-17 mm, the upper screen roller group and the reverse screen roller group are positioned in the same plane, the included angle between the upper screen roller group and the horizontal plane is 12 degrees, the included angle between the lower screen roller group and the horizontal plane is 10 degrees, the rotation directions of the screen rollers in the upper screen roller group and the lower screen roller group are consistent with the operation direction of the green pellets, and the rotation directions of the screen rollers in the reverse screen roller group are opposite to the operation direction of the green pellets; the qualified green pellet conveying belt is positioned below the upper screen roller group, the reverse screen roller group and the lower screen roller group, and the running direction of the qualified green pellet conveying belt is opposite to that of the green pellets; the material returning conveying belt is positioned below the rear end of the lower screen roller group, and the running direction of the material returning conveying belt is consistent with the running direction of the green pellets.

The inner wall of the rear end of the screening box body is provided with a sliding chute, a sliding plate is arranged in the sliding chute, an inclined baffle is fixedly arranged on the inner side wall of the sliding plate, and the front end of the inclined baffle is positioned at the front part of the lower screening roller set.

The automatic conveying device is characterized in that two upper long plates which are symmetrical to each other are fixedly arranged on the upper portion of the rack, a green pellet conveying motor and a carrier roller which is arranged in parallel are fixedly arranged on the upper long plates, the green pellet conveying motor is connected with the carrier roller through a coupler for transmission, and a green pellet conveying belt is arranged on the carrier roller.

The fixed two lower part rectangular shaped plates that are equipped with mutual symmetry of frame lower part, be equipped with the bearing roller that is parallel to each other between two lower part rectangular shaped plates, be equipped with qualified green pellet conveyer belt and returning charge conveyer belt on the bearing roller respectively, qualified green pellet conveyer belt and returning charge conveyer belt are driven by the gear motor of looks adaptation respectively.

The utility model has the beneficial effects that: compared with the existing green pellet screening equipment, the green pellet screening equipment has the advantages that the rotation directions of the adjacent screen roller sets are different, so that the green pellets roll quickly and rapidly, and the diffusion effect is promoted; because each screen roller group is driven by the same speed regulating motor, the energy consumption is reduced, and the screen rollers rotate at the same speed; because the conveyer belts for respectively conveying the qualified green pellets and the unqualified green pellets to the corresponding processes are added, the integration degree of the equipment is improved, the quick operation is convenient, and the labor efficiency is improved.

Drawings

FIG. 1 is a schematic side view, partially in section, of the structure of the present invention;

in the figure: 1. a frame; 2. a screen roller; 3. screening the box body; 4. a base; 5. a first speed regulating motor; 6. a baffle plate is obliquely arranged; 7. a slide plate; 8. qualified green pellet conveyer belts; 9. a return conveyer belt; 10. a green pellet conveyor belt; 11. a green pellet conveying motor; 12. a feed hopper; 13. a screen roller mounting plate; 14. a support pillar; 15. a lower strip plate; 16. an upper strip plate; 17. a second speed regulating motor; a number 18 third speed regulating motor; 19. a lower screen roller set; 20. a reverse screen roller set; 21. an upper screen roller set.

Detailed Description

The utility model is further illustrated with reference to fig. 1.

The integrated equipment for diffusing, screening and simultaneously carrying the green pellets in a grading manner comprises a rack 1, a screen roller 2, a screening box 3, a base 4, a green pellet conveyor belt 10, a qualified green pellet conveyor belt 8, a return conveyor belt 9 and a speed regulating motor, wherein the rack 1 and the screening box 3 are fixedly arranged on the base 4, the green pellet conveyor belt 10 is arranged at the upper part of the rack 1, the qualified green pellet conveyor belt 8 and the return conveyor belt 9 are arranged at the lower part of the rack 1, a feeding hopper 12 matched with the front end of the green pellet conveyor belt 10 is fixedly arranged at the top of the front end of the screening box 3, and the green pellets conveyed by the green pellet conveyor belt 10 fall into the feeding hopper 12; the method is characterized in that: two first support columns 23, two second support columns 14 and two third support columns 22 which are mutually symmetrical are fixedly arranged in the cavity of the screening box body 3; an upper screen roller set 21 matched with the lower opening of the feeding hopper 12 is fixedly arranged between the first support column 23 and the inner wall of the front end of the screening box body 3, a reverse screen roller set 20 is fixedly arranged between the second support column 14 and the first support column 23, a lower screen roller set 19 is fixedly arranged between the third support column 22 and the second support column 14, a first speed regulating motor 5 is fixedly arranged at the upper end of the first support column 23, a second speed regulating motor 17 is fixedly arranged at the upper end of the second support column 14, and a third speed regulating motor 18 is fixedly arranged at the upper end of the third support column 22; the upper screen roller group 21 consists of two symmetrical screen roller mounting plates 13 and six screen rollers 2 which are parallel to each other, the screen rollers 2 are rotatably arranged between the two screen roller mounting plates 13, and the first speed regulating motor 5 is connected with the screen rollers 2 of the upper screen roller group 21 through a coupler and a transmission chain for transmission; the reverse screen roller group 20 is composed of two symmetrical screen roller mounting plates 13 and seven mutually parallel screen rollers 2, the screen rollers 2 are rotatably arranged between the two screen roller mounting plates 13, and a second speed regulating motor 17 is connected with the screen rollers 2 of the reverse screen roller group 20 through a coupler and a transmission chain for transmission; the lower screen roller group 19 is composed of two symmetrical screen roller mounting plates 13 and five screen rollers 2 which are parallel to each other, the screen rollers 2 are rotatably arranged between the two screen roller mounting plates 13, and a third speed regulating motor 18 is connected with the screen rollers 2 of the lower screen roller group 19 through a coupler and a transmission chain for transmission; the distance between two adjacent screen rollers 2 in the upper screen roller group 21, the reverse screen roller group 20 and the lower screen roller group 19 is 16-17 mm, the upper screen roller group 21 and the reverse screen roller group 20 are positioned in the same plane, the included angle between the upper screen roller group 21 and the horizontal plane is 12 degrees, the included angle between the lower screen roller group 19 and the horizontal plane is 10 degrees, the rotation direction of the screen rollers 2 in the upper screen roller group 21 and the lower screen roller group 19 is consistent with the operation direction of the green pellets, and the rotation direction of the screen rollers 2 in the reverse screen roller group 20 is opposite to the operation direction of the green pellets; the qualified green pellet conveyer belt 8 is positioned below the upper screen roller group 21, the reverse screen roller group 20 and the lower screen roller group 19, and the running direction of the qualified green pellet conveyer belt 8 is opposite to that of the green pellets; the return conveyer belt 9 is positioned below the rear end of the lower screen roller group 19, and the running direction of the return conveyer belt 9 is consistent with the running direction of the green pellets.

Screening box 3's rear end inner wall on be equipped with the spout, be equipped with slide 7 in the spout, fixed being equipped with on slide 7's the inside wall puts baffle 6 to one side, the front end that puts baffle 6 to one side is located lower part sieve roller group 19 front portion, adjust the distance between putting baffle 6 and the lower part sieve roller group 19 to one side through slide 7, block the green pellet of bounceing at the whereabouts in-process through putting baffle 6 to one side, prevent that the green pellet from breaking into pieces, when the green pellet volume is great, put baffle 6 to one side and can contact with lower part sieve roller group 19, block completely that the green pellet continues to get into lower part sieve roller group 19, prevent that partial surplus qualified green pellet from getting into returning charge conveyer belt 9.

The upper portion of frame 1 fixed be equipped with two upper portion rectangular plates 16 of mutual symmetry, fixed being equipped with green pellet conveying motor 11 and the bearing roller of parallel arrangement on the rectangular plate 16 of upper portion, green pellet conveying motor 11 passes through the shaft coupling and is connected the transmission with the bearing roller, is equipped with green pellet conveyer belt 10 on the bearing roller.

The fixed two lower part rectangular shaped plates 15 that are equipped with mutual symmetry in frame 1 lower part, be equipped with the bearing roller that is parallel to each other between two lower part rectangular shaped plates 15, be equipped with qualified green pellet conveyer belt 8 and returning charge conveyer belt 9 on the bearing roller respectively, qualified green pellet conveyer belt 8 and returning charge conveyer belt 9 are driven by the gear motor of looks adaptation respectively.

When the green pellet mill is used, green pellets produced by the pelletizer are conveyed to the feeding hopper 12 through the green pellet conveyor belt 10 and fall on the upper screen roller group 21 from the lower opening of the feeding hopper 12, at the moment, the rotation direction of the screen rollers 2 of the upper screen roller group 21 is consistent with the rolling direction of the green pellets, so that the screen rollers 2 of the upper screen roller group 21 can push the green pellets to accelerate to roll downwards, the green pellets are enabled to rapidly flow, the diffusion speed of the green pellets is improved, as the space between the adjacent screen rollers 2 is 16-17 mm, part of the green pellets with the particle size smaller than the space between the adjacent screen rollers 2 fall through the upper screen roller group 21, and the green pellets with the space larger than the space between the adjacent screen rollers 2 and the remaining green qualified pellets are mixed together to continuously roll downwards; after the green pellets roll on the reverse screen roller group 20, because the rotation direction of the screen rollers 2 of the reverse screen roller group 20 is opposite to the rolling direction of the green pellets, the rolling speed of the green pellets is reduced, the rotation of the green pellets is promoted, the diffusion of the green pellets is further promoted, the green pellets with the residual quantity smaller than the distance between the adjacent screen rollers 2 fall through the reverse screen roller group 20, so far, the qualified green pellets basically and completely fall, and the unqualified green pellets with the distance larger than the distance between the adjacent screen rollers 2 continue to roll downwards; when the green pellets roll to the lower screen roller group 19, the rotation direction of the screen rollers 2 of the lower screen roller group 19 is consistent with the rolling direction of the green pellets again, so that unqualified green pellets can be promoted to roll downwards at an accelerated speed, the unqualified green pellets are promoted to be rapidly rolled and output, and the purposes of high-efficiency dispersion and improvement of screening efficiency are achieved; qualified green pellets falling from the upper screen roller group 21, the reverse screen roller group 20 and the lower screen roller group 19 fall on a qualified green pellet conveyer belt 8, and qualified finished products are input into a drying and roasting process through the qualified green pellet conveyer belt 8; because the lower part of the output end of the lower screen roller group 19 is provided with the return conveyer belt 9, the output end of the return conveyer belt 9 is connected to the pellet production process, and the large green pellets output from the lower screen roller group 19 and the trace qualified pellets which are not screened are returned to the pellet production process again through the return conveyer belt 9.

Claims (2)

1. The integrated equipment comprises a rack (1), a screen roller (2), a screening box body (3), a base (4), a green pellet conveying belt (10), a qualified green pellet conveying belt (8), a material returning conveying belt (9) and a speed regulating motor, wherein the rack (1) and the screening box body (3) are fixedly arranged on the base (4), the green pellet conveying belt (10) is arranged at the upper part of the rack (1), the qualified green pellet conveying belt (8) and the material returning conveying belt (9) are arranged at the lower part of the rack (1), and a feeding hopper (12) matched with the front end of the green pellet conveying belt (10) is fixedly arranged at the top of the front end of the screening box body (3); the method is characterized in that: two first support columns (23), two second support columns (14) and two third support columns (22) which are mutually symmetrical are fixedly arranged in the cavity of the screening box body (3); an upper screen roller set (21) matched with a lower opening of the feeding hopper (12) is fixedly arranged between the first supporting column (23) and the inner wall of the front end of the screening box body (3), a reverse screen roller set (20) is fixedly arranged between the second supporting column (14) and the first supporting column (23), a lower screen roller set (19) is fixedly arranged between the third supporting column (22) and the second supporting column (14), a first speed regulating motor (5) is fixedly arranged at the upper end of the first supporting column (23), a second speed regulating motor (17) is fixedly arranged at the upper end of the second supporting column (14), and a third speed regulating motor (18) is fixedly arranged at the upper end of the third supporting column (22); the upper screen roller group (21) is composed of two symmetrical screen roller mounting plates (13) and six mutually parallel screen rollers (2), the screen rollers (2) are rotatably arranged between the two screen roller mounting plates (13), and a first speed regulating motor (5) is connected with and drives the screen rollers (2) of the upper screen roller group (21) through a coupler and a transmission chain; the reverse screen roller group (20) is composed of two symmetrical screen roller mounting plates (13) and seven mutually parallel screen rollers (2), the screen rollers (2) are rotatably arranged between the two screen roller mounting plates (13), and a second speed regulating motor (17) is connected with and drives the screen rollers (2) of the reverse screen roller group (20) through a coupler and a transmission chain; the lower screen roller group (19) is composed of two symmetrical screen roller mounting plates (13) and five screen rollers (2) which are parallel to each other, the screen rollers (2) are rotatably arranged between the two screen roller mounting plates (13), and a third speed regulating motor (18) is connected with and drives the screen rollers (2) of the lower screen roller group (19) through a coupler and a transmission chain; the distance between two adjacent screen rollers (2) in the upper screen roller group (21), the reverse screen roller group (20) and the lower screen roller group (19) is 16-17 mm, the upper screen roller group (21) and the reverse screen roller group (20) are positioned in the same plane, and form an included angle of 12 degrees with the horizontal plane, the lower screen roller group (19) form an included angle of 10 degrees with the horizontal plane, the rotation direction of the screen rollers (2) in the upper screen roller group (21) and the lower screen roller group (19) is consistent with the operation direction of the green pellets, and the rotation direction of the screen rollers (2) in the reverse screen roller group (20) is opposite to the operation direction of the green pellets; the qualified green pellet conveyor belt (8) is positioned below the upper screen roller group (21), the reverse screen roller group (20) and the lower screen roller group (19), and the running direction of the qualified green pellet conveyor belt (8) is opposite to that of the green pellets; the material returning conveying belt (9) is positioned below the rear end of the lower screen roller group (19), and the running direction of the material returning conveying belt (9) is consistent with the running direction of the green pellets.

2. The integrated equipment for the diffusion screening and simultaneous grading transportation of green pellets according to claim 1, characterized in that: the inner wall of the rear end of the screening box body (3) is provided with a sliding groove, a sliding plate (7) is arranged in the sliding groove, an inclined baffle (6) is fixedly arranged on the inner side wall of the sliding plate (7), and the front end of the inclined baffle (6) is positioned at the front part of the lower screening roller set (19).

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