CN111250383A

CN111250383A - Rolling screen for screening iron works raw materials

Info

Publication number: CN111250383A
Application number: CN202010127703.6A
Authority: CN
Inventors: 张鑫军; 曾道龙
Original assignee: Pingxiang Xingfeng High Tech Industrial Co ltd
Current assignee: Pingxiang Xingfeng High Tech Industrial Co ltd
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2020-06-09

Abstract

The invention discloses a rolling screen for screening raw materials of an iron-making plant, which belongs to the field of screening devices and comprises a horizontal beam, a power device, a rack and a screen roller set; a rack is supported above the horizontal beam, a screen roller group for screening materials is arranged on the surface of the rack, and the screen roller group comprises a plurality of screen rollers; the screen roller is including setting up in inside seamless pipe and setting up in the non-metallic material that seamless pipe surface was used for preventing the sizing. According to the invention, the non-metal material layer is arranged on the outer surface of the screen roller which is originally made of the metal material, so that the metal in the screen roller can not directly contact with the ironmaking raw material through the isolation of the non-metal material, and the non-metal material has no magnetism, thereby avoiding the adhesion of the ironmaking raw material due to the magnetism after the ironmaking raw material is directly contacted with the metal screen roller, enabling the ironmaking raw material to be smoothly screened, and improving the efficiency and the screening precision of the rolling screen.

Description

Rolling screen for screening iron works raw materials

Technical Field

The invention relates to the field of screening devices, in particular to a rolling screen for screening raw materials of an iron works.

Background

The raw materials that iron works used are because whole size differs, and freeze into the bold easily when winter, make the batching disc take place to block up easily when putting into use, so need screen before putting into use, common among the prior art sieving mechanism is the shale shaker, however, owing to there is comparatively bold raw materials when adopting the shale shaker, lead to the condition that the card sieve appears in the shale shaker easily, the problem of card sieve is solved through adopting the roll screen to present technique for this reason, transport the bold raw materials to the afterbody and prevent the card sieve phenomenon through the rotation of roll screen roller on the roll screen. However, when the rolling screen is adopted, the screen roller is made of a metal material, so that the raw material is easily adsorbed on the screen roller due to magnetism in the process of contact friction with the raw material, the raw material is accumulated on the screen roller, the screening effect of the rolling screen is poor, some fine materials are screened out as large coarse materials, the screening efficiency of the rolling screen is reduced, the coarse materials are greatly increased, and a factory needs to consume more manpower and material resources to process the raw material; in order to solve the problems, a factory needs to regularly stop the rolling screen for maintenance, the screen rollers are cleaned to improve the precision and the efficiency of the rolling screen, and the frequent stop maintenance greatly reduces the production efficiency.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a rolling screen for screening iron-making plant raw materials, which has the function of preventing the raw materials from being adsorbed on the screen rollers and can prevent the raw materials from being accumulated due to the adsorption of the raw materials on the screen rollers in the process of screening the iron-making raw materials.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a rolling sieve for screening iron works, which comprises a horizontal beam, a power device, a rack and a sieve roller group, wherein the horizontal beam is connected with the power device;

the horizontal beam is fixed on the ground, the rack for mounting the screen roller group is supported above the horizontal beam, the screen roller group for screening materials is arranged on the surface of the rack, the screen roller group comprises a plurality of screen rollers which are horizontally arranged on the surface of the rack, the screen rollers are parallel to each other, and the end part of the screen roller group is connected with the power device for providing power to enable the screen roller group to rotate; the sieve roller including set up in inside seamless pipe and set up in seamless steel pipe surface is used for preventing the non-metallic material of sizing.

Preferably, the non-metallic material disposed on the outer surface of the screen roller may be polyurethane or ceramic.

Preferably, each screen roller in the screen roller group is separately connected with a power device through a transmission device.

Preferably, the spacing between the screen rollers can be adjusted, and the spacing between the screen rollers is 60 mm-150 mm.

Preferably, one end of the horizontal beam is connected with the rack through an adjustable screw rod, the other end of the horizontal beam is connected with the rack through a hinge, and the inclination of the rack can be adjusted by adjusting the screw rod.

Preferably, the inclination of the rack is 20 to 30 °.

Preferably, the shielding steel plate is further included;

the shielding steel plates perpendicular to the upper surface of the rack and used for preventing the edge flash of the rolling screen are arranged at the upper end, the left end and the right end of the rack.

Preferably, the surfaces of the metal exposed out of the rolling screen device are all provided with paint for rust prevention.

The invention has the beneficial effects that:

according to the rolling sieve for screening the raw materials in the iron-making plant, the sieve roller of the rolling sieve is improved on the basis of the rolling sieve, the outer surface of the sieve roller which is originally made of a metal material is additionally provided with a layer of non-metal material, and the metal in the sieve roller cannot be directly contacted with the iron-making raw material through the isolation of the non-metal material, so that the condition that the iron-making raw material is adsorbed on the sieve roller due to the magnetism because the iron-making raw material is directly contacted with the metal sieve roller is avoided, the iron-making raw material can be smoothly screened, the condition that the raw material is adsorbed on the sieve roller and then is accumulated on the rolling sieve is avoided, and the efficiency and the screening precision of the rolling sieve are improved.

Drawings

FIG. 1 is a schematic structural view of a rolling screen for iron mill feedstock screening provided in the present invention;

FIG. 2 is a schematic structural view of a rolling screen roller for iron mill feedstock screening provided in the present invention;

in the figure:

1. a horizontal beam; 2. a power plant; 3. a frame; 4. a screen roller; 5. a screw rod; 6. a shielding steel plate; 41. seamless steel pipes; 42. a non-metallic material.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1 and 2, the rolling screen for screening raw materials in iron works provided by the present invention comprises a horizontal beam 1 as a base for fixing the whole rolling screen device, a power device 2 for giving power to the rolling screen, a screen roller set for rotating the screening, and a frame 3 for supporting the screen roller set. Wherein horizontal beam 1 is fixed in the level subaerially, horizontal beam 1's top is fixed with frame 3 through horizontal beam 1, frame 3 is certain inclination setting, and frame 3 the top all is parallel with the horizontal plane with the lower extreme, frame 3's surface is provided with the sieve roller group, the sieve roller group is on a parallel with frame 3, the sieve roller group includes many sieve rollers 4, be parallel to each other and all be on a parallel with horizontal ground between every sieve roller 4, still be provided with on one side of frame 3 and be used for providing sieve roller group power 2 that rotates, power device 2 is the combination of reduction gear and motor. The screen roller 4 includes a seamless steel pipe 41 at a central portion and a non-magnetic non-metallic material 42 wrapped on a surface of the seamless steel pipe 41. This embodiment can avoid appearing the card sieve phenomenon that appears easily when adopting the mesh screen through the sieving mechanism who adopts the roll screen as ironmaking raw materials, and wrap up non-metallic material 42 on the metal screen roller 4 surface at the roll screen, make ironmaking raw materials and sieve roller 4 contact time can not take place to make ironmaking raw materials adsorb on the surface of sieve roller 4 and lead to the accumulational phenomenon of ironmaking raw materials because of magnetic reason, and avoid some fines material to become little and filtered away because ironmaking raw materials adsorb on sieve roller 4 surface and make the clearance between the sieve roller 4, thereby improve the screening efficiency of roll screen and the precision of screening.

Further, the non-metallic material 42 disposed on the outer surface of the screen roller 4 in this embodiment may be polyurethane or ceramic, and the ceramic itself is a non-magnetic substance, and has high hardness and good wear resistance, so as to adapt to the friction between the screen roller 4 and the ironmaking raw material when rotating; the polyurethane itself is also a non-magnetic substance, which has the same physical properties of high hardness and wear resistance as the ceramic, so that the same can be applied to the non-metallic material 42 on the surface of the screen roller 4.

In order to facilitate maintenance and replacement of the screen rollers 4 in the rolling screen, further, the screen rollers 4 are arranged in a single transmission mode, that is, each screen roller 4 is independently provided with one group of power devices 2 for driving, and power control of each group of power devices 2 is arranged in the same integrated electronic box and can independently control the start and stop of each group of power devices 2. Make when needs maintain certain sieve roller 4 in the sieve roller group through the mode that adopts single drive, only need be directed against operate to that sieve roller 4 can to the work load of maintenance has been reduced by a wide margin, has saved the time.

Further, in order to meet the requirements of different raw material fineness under various conditions, the distance between the screen rollers 4 of the rolling screen provided by the embodiment can be adjusted, and further, the distance between the screen rollers 4 is 60 mm-150 mm. When different demands are made on the size of the raw material, the gap between the screen rollers 4 can be adjusted, so that the rolling screen can be suitable for screening under different raw material conditions.

Furthermore, one end of the horizontal beam 1 is connected with the rack 3 through an adjustable screw rod 5, the other end of the horizontal beam 1 is connected with the rack 3 through a hinge, and the inclination of the rack 3 can be adjusted through the adjustable screw rod 5. Can be according to the inclination of the condition adjustment roll screen of ironmaking raw materials screening, when needs carry out more careful screening to the raw materials, then can make the inclination of roll screen reduce through the adjustment to lead screw 5, the time of extension bold raw materials on the roll screen for the raw materials screening is more careful, can also reduce the resistance that sieve roller 4 met when rotating through the inclination that increases the roll screen. Further, the inclination of the frame 3 in this embodiment is 20 to 30 °

In order to prevent the iron-making raw materials from leaking out of the left end, the right end and the upper end of the rolling screen, the iron-making device further comprises a shielding steel plate 6; the upper end and the left and right ends of the frame 3 are provided with shielding steel plates 6 which are perpendicular to the upper surface of the frame 3 and used for preventing the edge flash of the rolling screen. The shielding steel plates 6 are arranged at the left end, the right end and the upper end, so that the iron-making raw materials can be prevented from leaking out of the rolling screen.

In order to prevent the metal on the rolling screen device from being corroded to reduce the service life, furthermore, the surfaces of the metal exposed out of the rolling screen device are all provided with anti-rust paint, the metal can be isolated from the air by applying the paint on the metal surface, so that the metal on the rolling screen device is prevented from being rusted and corroded, and the service life of the whole device is prolonged.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims

1. A rolling screen for screening raw materials of an iron mill is characterized in that:

comprises a horizontal beam (1), a power device (2), a frame (3) and a screen roller group;

the horizontal beam (1) is fixed on the ground, the frame (3) used for installing the screen roller group is supported above the horizontal beam (1), the screen roller group used for screening materials is arranged on the surface of the frame (3), the screen roller group comprises a plurality of screen rollers (4), the screen rollers (4) are horizontally arranged on the surface of the frame (3), the screen rollers (4) are parallel to each other, and the end part of the screen roller group is connected with the power device (2) used for providing power to enable the screen roller group to rotate; the screen roller (4) comprises a seamless steel pipe (41) arranged inside and a non-metal material (42) arranged on the surface of the seamless steel pipe and used for preventing sticking.

2. The rolling screen for iron and steel plant feedstock screening of claim 1, wherein:

the non-metallic material (42) disposed on the outer surface of the screen roller (4) may be polyurethane or ceramic.

3. The rolling screen for iron and steel plant feedstock screening of claim 1, wherein:

each screen roller (4) in the screen roller group is independently connected with a power device (2) through a transmission device.

4. The rolling screen for iron and steel plant feedstock screening of claim 1, wherein:

the distance between the screen rollers (4) can be adjusted, and the distance between the screen rollers (4) is 60-150 mm.

5. The rolling screen for iron and steel plant feedstock screening of claim 1, wherein:

one end of the horizontal beam (1) is connected with the rack (3) through an adjustable screw rod (5), the other end of the horizontal beam (1) is connected with the rack (3) through a hinge, and the inclination of the rack (3) can be adjusted by adjusting the screw rod (5).

6. The rolling screen for iron and steel plant feedstock screening of claim 5, wherein:

the inclination of the frame (3) is 20-30 degrees.

7. The rolling screen for iron and steel plant feedstock screening of claim 1, wherein:

also comprises a shielding steel plate (6);

the upper end and the left and right ends of the frame (3) are provided with shielding steel plates (6) which are perpendicular to the upper surface of the frame (3) and used for preventing the edge of the rolling screen from overflowing.

8. The rolling screen for iron and steel plant feedstock screening of claim 1, wherein:

and the surfaces of the metal exposed out of the rolling screen device are all provided with antirust paint.