CN215844053U - Raw ball screening device and trolley - Google Patents
Raw ball screening device and trolley Download PDFInfo
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- CN215844053U CN215844053U CN202121457654.9U CN202121457654U CN215844053U CN 215844053 U CN215844053 U CN 215844053U CN 202121457654 U CN202121457654 U CN 202121457654U CN 215844053 U CN215844053 U CN 215844053U
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Abstract
The utility model belongs to the field of green ball screening, and particularly relates to a green ball screening device and a trolley. The device includes the frame, first roller sieve layer and second roller sieve layer, wherein, first roller sieve layer and second roller sieve layer parallel arrangement, second roller sieve layer sets up in first roller sieve layer below, first roller sieve layer includes the first roller that a plurality of equidistant set up, second roller sieve layer includes the second roller that a plurality of equidistant set up, a plurality of first roller and a plurality of second roller all rotationally set up in the frame, interval between the adjacent first roller is first interval, adjacent second and interval between the roller are second and interval, first interval is greater than the second interval. The application provides a pair of green ball screening plant and platform truck, because this green ball screening plant divides qualified green ball according to the diameter, be about to qualified green ball and realize hierarchical cloth, improved the inside air permeability of pelletizing, solved the problem of lower floor's inhomogeneous quality on the finished product pellet.
Description
Technical Field
The utility model belongs to the field of green ball screening, and particularly relates to a green ball screening device and a trolley.
Background
With the development of the steel technology towards the direction of energy conservation and high efficiency, the belt type roasting machine has advantages in the aspect of producing fluxed pellets, the belt type roasting machine technology is paid attention to, in the production technology of the pellets of the belt type roasting machine, the pellets are subjected to five stages of drying, preheating, roasting, soaking and cooling, in the prior art, a roller type distributor is arranged at the head of the belt type roasting machine, green pellets with diameters not meeting the standard can be screened out by the roller type distributor, the screened green pellets are arranged on a trolley, burners of the belt type roasting machine are symmetrically arranged on two sides above the trolley, and heat is brought into the pellets by means of negative pressure of process air to be preheated and roasted.
Because the roller-type distributing device of the prior belt type roasting machine can not realize the function of grading distribution, after screening, all qualified green pellets are mixed and arranged on a trolley, the diameter difference of each qualified green pellet is larger, the gap between the pellets is small, the ventilation rate is low, the heat transmittance in the roasting process is low, so that the green pellets stacked on the upper layer are fully roasted, but the green pellets stacked on the lower layer are low in roasting temperature, and the green pellets with larger diameter are insufficiently preheated and roasted, so that the quality of the upper layer and the lower layer of the roasted finished pellet ore of the belt type roasting machine is uneven, and the blast furnace smelting is influenced.
SUMMERY OF THE UTILITY MODEL
The application provides a green ball screening plant and platform truck has solved among the prior art calcination finished product pellet ore lower floor quality inhomogeneous, influences the technical problem that blast furnace was smelted.
In one aspect, the application provides a raw ball screening device, which comprises a rack, a first roller screening layer and a second roller screening layer, wherein the first roller screening layer and the second roller screening layer are arranged in parallel, the second roller screening layer is arranged below the first roller screening layer, the first roller screening layer comprises a plurality of first rollers arranged at equal intervals, the second roller screening layer comprises a plurality of second rollers arranged at equal intervals, the first rollers and the second rollers are both rotatably arranged on the rack, the interval between every two adjacent first rollers is a first interval, the interval between every two adjacent second rollers is a second interval, and the first interval is larger than the second interval;
one end of the first roller screen layer in the direction perpendicular to the axis of the first roller is a first feeding end, and the other end of the first roller screen layer is a first discharging end; one end of the second roller screen layer in the direction perpendicular to the axis of the second roller is a second feeding end, the other end of the second roller screen layer is a second discharging end, the first feeding end is aligned with the second feeding end, and the length of the first roller screen layer is larger than or equal to that of the second roller screen layer.
Further, the first roller screen layer and the second roller screen layer are both obliquely arranged, the first feeding end is higher than the first discharging end, and the second feeding end is higher than the second discharging end.
Further, an impact roller is arranged at the first feeding end, and the impact roller and the first roller screen layer are arranged side by side.
Further, the included angle between the first roller screen layer and the horizontal plane and the included angle between the second roller screen layer and the horizontal plane are 18-22 degrees.
Further, first discharge end and second discharge end department all is equipped with the ejection of compact elephant trunk, the contained angle of ejection of compact elephant trunk and horizontal plane is 50 ~ 55.
Furthermore, two ends of each first roller along the axis direction are provided with a first motor, and the first rollers rotate through the first motors; every both ends along the axis direction of second roller all are equipped with the second motor, the second roller passes through the second motor rotates.
Furthermore, two sides of the first roller screen layer along the axial direction of the first roller are provided with first material baffle plates; and second baffle plates are arranged on the two sides of the second roller screen layer along the axis direction of the second roller.
Further, a wet return belt conveyor is arranged right below the second roll screen layer.
On the other hand, this application still provides a platform truck, its characterized in that, be equipped with on the platform truck above a green ball screening plant.
Further, be close to on the platform truck first feed end and one side of second feed end is the feed side, be close to first discharge end and one side of second discharge end is the ejection of compact side, the feed side is equipped with the bed charge device, the ejection of compact side is equipped with the edge-laying material device, wherein:
the raw ball screening device comprises a raw ball screening device and a raw ball distributing device, wherein the raw ball screening device comprises a raw ball distributing device and a raw ball distributing device, the raw ball distributing device comprises a first chute and two first electric fan-shaped valves, the two first electric fan-shaped valves are oppositely arranged at the top of the first chute, the two first electric fan-shaped valves are communicated with the first chute, and the raw ball screening device is arranged between the two first electric fan-shaped valves;
the edge material paving device comprises two second chutes and two second electric fan-shaped valves, the second chutes and the second electric fan-shaped valves are arranged in a one-to-one correspondence mode, each second electric fan-shaped valve is arranged at the top of the corresponding second chute, each second electric fan-shaped valve is communicated with the corresponding second chute, and the green ball screening device is arranged between the two second chutes.
The beneficial effect of this application is as follows:
the utility model provides a trolley, including green ball screening plant, because in this green ball screening plant, the first interval between the adjacent first roller is greater than the second interval between the adjacent second roller, after a plurality of green balls that wait to sieve got into from first feed inlet, the diameter was greater than or equal to first interval's green ball rolls on the first roller sieve layer along with the first roller that rotates and drops from first discharge end, piles up and forms first qualified green ball group; the green balls with the diameter smaller than the first interval fall into the second roller screen layer, wherein the green balls with the diameter larger than or equal to the second interval roll on the second roller screen layer along with the rotating second roller and fall from the second discharge end to be stacked to form a second qualified green ball group, and the unqualified green balls with the diameter smaller than the second interval fall from the interval in the second roller screen layer to be stacked to form an unqualified green ball group.
The utility model provides a pair of trolley, including green ball screening plant, because this green ball screening plant has divided into first qualified green ball group and the qualified green ball group of second according to the diameter with qualified green ball, be about to qualified green ball realization hierarchical cloth, pile up all qualified green balls together among the prior art, in this application, because each green ball diameter difference in the green ball group after dividing is little, the inside air permeability of pelletizing has been improved, the problem of lower floor inhomogeneous quality has been solved to finished pellet ore, better satisfied the requirement of blast furnace smelting to pellet ore.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is a schematic structural diagram of a green ball screening device provided in this embodiment;
FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. 1;
FIG. 3 is a cross-sectional view taken along line 1-1 of FIG. 1;
fig. 4 is a cross-sectional view of 3-3 of fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The present embodiment provides a raw ball screening device, fig. 1 is a schematic structural diagram of the raw ball screening device provided by the present embodiment, and with reference to fig. 1, the raw ball screening device provided by the present embodiment includes a frame 20, a first roller screen layer 4 and a second roller screen layer 8, wherein the first roller screen layer 4 and the second roller screen layer 8 are arranged in parallel, the second roller screen layer 8 is arranged below the first roller screen layer 4, the first roller screen layer 4 includes a plurality of first rollers arranged at equal intervals, the second roller screen layer 8 includes a plurality of second rollers arranged at equal intervals, the plurality of first rollers and the plurality of second rollers are all rotatably arranged on the frame 20, an interval between adjacent first rollers is a first interval, an interval between adjacent second rollers is a second interval, and the first interval is greater than the second interval.
Further, one end of the first roller screen layer 4 in the direction perpendicular to the axis of the first roller is a first feeding end, and the other end is a first discharging end; one end of the second roller screen layer 8 in the direction perpendicular to the axis of the second roller is a second feeding end, the other end of the second roller screen layer is a second discharging end, the first feeding end is aligned with the second feeding end, and the length of the first roller screen layer 4 is larger than or equal to that of the second roller screen layer 8.
According to the green ball screening device provided by the embodiment, the green ball screening device is arranged on the trolley, and because the first interval between the adjacent first rollers is larger than the second interval between the adjacent second rollers, after a plurality of green balls to be screened enter from the first feed inlet, the green balls with the diameter larger than or equal to the first interval roll on the first roller screening layer 4 along with the rotating first rollers and fall from the first discharge end, and are stacked to form a first qualified green ball group; the green balls with the diameter smaller than the first interval fall into the second roller screen layer 8, wherein the green balls with the diameter larger than or equal to the second interval roll on the second roller screen layer 8 along with the rotating second roller and fall from the second discharge end to form a second qualified green ball group in an accumulated mode, and the unqualified green balls with the diameter smaller than the second interval fall from the interval in the second roller screen layer 8 to form an unqualified green ball group in an accumulated mode.
The utility model provides a pair of green ball screening plant, owing to can divide into first qualified green ball group and the qualified green ball group of second according to the diameter with qualified green ball, be about to qualified green ball realizes hierarchical cloth, pile up all qualified green balls together among the prior art, in this application, because each green ball diameter difference in the green ball group after the division is little, the inside air permeability of pelletizing has been improved, the problem of lower floor's inhomogeneous quality has been solved finished pellet ore, better satisfied blast furnace and smelt the requirement to pellet ore.
Further, first roller sieve layer 4 and second roller sieve layer 8 all incline to set up in this embodiment, and first feed end is higher than first discharge end, and the second feed end is higher than the second discharge end, increases the rolling speed of green ball, improves production efficiency.
Referring to fig. 1, in this embodiment, a hoisting frame 3 is provided on the top of the frame 20 for hoisting the green ball screening device.
In this embodiment, the green balls with a diameter smaller than 8mm are unqualified green balls, and the diameter of qualified green balls is 8-16mm, so in this embodiment, the first interval is 12.5mm, the second interval is 8mm, the large-diameter green balls with a diameter greater than or equal to 12.5mm form a first qualified green ball group, the small-diameter green balls with a diameter greater than or equal to 8mm and smaller than 12.5mm form a second green ball group, and the green balls with a diameter smaller than 8mm are unqualified green ball groups.
Preferably, the first roller screen layer 4 in this embodiment may include 32 first rollers arranged at equal intervals, and the roller diameter of the first roller is Φ 89 mm; in this embodiment, the second roll screen layer 8 may include 28 second rolls arranged at equal intervals, and the diameter of the second roll is Φ 89mm, and in practical application, the number of the rolls may be set according to the width of the trolley.
Referring to fig. 1, in this embodiment, a feeding belt 12 is disposed at the first feeding end, raw balls to be screened are conveyed to the first feeding end through the feeding belt 12, in order to prevent the raw balls from falling and breaking, and generate powder, in this embodiment, an impact roller 1 is further disposed at the first feeding end to perform a buffering function, the impact roller 1 is disposed side by side with the first roller screen layer 4, and preferably, the roller diameter of the impact roller 1 may be 159 mm.
Further, in the embodiment, the included angle between the first roller screen layer 4 and the second roller screen layer 8 and the horizontal plane may be 18 to 22 °.
Further, because first discharge end and second discharge end have a take the altitude from the platform truck face, for avoiding the raw ball directly to fall and lead to the breakage, first discharge end bottom is equipped with first ejection of compact carriage apron 10 in this embodiment, and second discharge end bottom all is equipped with second ejection of compact carriage apron 11, and first ejection of compact carriage apron 10 and second ejection of compact carriage apron 11 are 50 ~ 55 with the contained angle of horizontal plane.
Specifically, a radar level gauge 6 can be arranged above the first discharging end to calculate the thickness of the green ball cloth.
With reference to fig. 1, in this embodiment, two ends of each first roller along the axial direction are provided with a first motor, and the first rollers are rotated by the first motors; and the two ends of each second roller along the axis direction are respectively provided with a second motor, the second rollers rotate through the second motors, and the first motors and the second motors are respectively subjected to variable frequency speed regulation to control the material flow speed.
Further, first roller sieve layer 4 all is equipped with first striker plate 2 along the both sides of first roller axis direction, and second roller sieve layer 8 all is equipped with second striker plate 5 along the both sides of second roller axis direction to prevent that the green ball from dropping from the middle part edge on first roller sieve layer 4 or second roller sieve layer 8.
Fig. 2 is a sectional view 2-2 of fig. 1, and referring to fig. 1 and fig. 2, a wet returning belt conveyor 16 is arranged right below the second roller screen layer 8 in this embodiment, that is, unqualified raw balls falling from the space of the second roller screen layer 8 are stacked on the wet returning belt conveyor 16 and returned to the raw material system, the width of the wet returning belt conveyor 16 is set according to the length of the second roller screen layer 8, and an electronic belt scale 21 can be arranged below the wet returning belt conveyor to measure the amount of wet returning material.
Further, in this embodiment, in order to prevent the unqualified raw balls dropped at the second feeding end from falling to a position outside the wet returning belt conveyor, the recovery slide carriage 13 is arranged at the second feeding end to play a guiding role, and the bottom of the recovery slide carriage 13 extends to the wet returning belt conveyor.
Example 2
This embodiment provides a platform truck, be equipped with the green ball screening plant among embodiment 1 on the platform truck, because the green ball screening plant should be divided into first qualified green ball group and the qualified green ball group of second with qualified green ball according to the diameter, pile up all qualified green balls together among the prior art, in this embodiment, because each green ball diameter difference in the green ball group after dividing is little, the inside air permeability of pelletizing has been improved, the problem of the upper and lower inhomogeneous quality of finished product pellet has been solved, better satisfied blast furnace smelting to the requirement of pellet.
Because the combustor of belt roasting machine is bilateral symmetry arrangement above the platform truck, in order to avoid the platform truck overburning deformation, before carrying out the screening of green ball, need to spread the bed charge on the platform truck and insulate against heat, green ball after the screening is then piled up on the bed charge that is laid, when preheating roasting to the green ball after the screening, in order to avoid the breast board overburning deformation of platform truck, need to lay the rim charge in accumulational green ball both sides in order to insulate against heat, fig. 3 is 1-1 section view of fig. 1, fig. 4 is 3-3 section view of fig. 1, combine fig. 3 and fig. 4, one side that is close to first feed end and second feed end on platform truck 17 in this embodiment is the feed side, one side that is close to first discharge end and second discharge end is the discharge side, the feed side is equipped with the bed charge device, the discharge side is equipped with the rim charge device, wherein:
the bottom material spreading device comprises a first chute 15 and two first electric fan-shaped valves 14, the two first electric fan-shaped valves 14 are oppositely arranged at the top of the first chute 15, the two first electric fan-shaped valves 14 are communicated with the first chute 15, the green ball screening device is arranged between the two first electric fan-shaped valves 14, the distance between the first chute 15 and the trolley 17 is 80-100mm, the amount of the bottom material is controlled through the first electric fan-shaped valves 14 along with the travelling of the trolley 17, and the bottom material can be uniformly arranged on the trolley 17.
The edge material paving device comprises two second chutes 9 and two second electric fan-shaped valves 7, the second chutes 9 are arranged in a one-to-one correspondence with the second electric fan-shaped valves 7, each second electric fan-shaped valve 7 is arranged at the top of the corresponding second chute 9, each second electric fan-shaped valve 7 is communicated with the corresponding second chute 9, the green ball screening device is arranged between the two second chutes 9, after the green balls are piled on paved bottom materials, the second electric fan-shaped valves 7 are opened, the edge materials flow out of the second chutes 9, and the edge materials are paved on two sides of the piled green balls.
Specifically, the bottom material and the edge material used in this example are both fired pellets.
Preferably, an emergency paving device can be arranged between the second chutes 9, the emergency paving device comprises a third chute 19 and a third electric fan-shaped valve 18, the third electric fan-shaped valve 18 is arranged at the top of the third chute 19 and is communicated with the third chute 19, when the front process is overhauled or an accident occurs, the third electric fan-shaped valve 18 is rapidly opened, the bed charge is fully paved on the whole trolley through the third chute 19, and the trolley 17 is prevented from being damaged due to overburning deformation.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The green ball screening device is characterized by comprising a rack, a first roller screening layer and a second roller screening layer, wherein the first roller screening layer and the second roller screening layer are arranged in parallel, the second roller screening layer is arranged below the first roller screening layer, the first roller screening layer comprises a plurality of first rollers which are arranged at equal intervals, the second roller screening layer comprises a plurality of second rollers which are arranged at equal intervals, the first rollers and the second rollers are both rotatably arranged on the rack, the interval between every two adjacent first rollers is a first interval, the interval between every two adjacent second rollers is a second interval, and the first interval is larger than the second interval;
one end of the first roller screen layer in the direction perpendicular to the axis of the first roller is a first feeding end, and the other end of the first roller screen layer is a first discharging end; one end of the second roller screen layer in the direction perpendicular to the axis of the second roller is a second feeding end, the other end of the second roller screen layer is a second discharging end, the first feeding end is aligned with the second feeding end, and the length of the first roller screen layer is larger than or equal to that of the second roller screen layer.
2. The green pellet screening assembly of claim 1, wherein said first roller screen layer and said second roller screen layer are inclined, said first infeed end is higher than said first outfeed end, and said second infeed end is higher than said second outfeed end.
3. A green pellet screening apparatus as claimed in claim 1, wherein said first feed end is provided with an impingement roller, said impingement roller being positioned side-by-side with said first roller screen layer.
4. The green pellet screening apparatus as claimed in claim 1, wherein the first roller screen layer and the second roller screen layer are both at an angle of 18-22 ° to the horizontal plane.
5. The green pellet screening device as claimed in claim 4, wherein a first discharging slide carriage is arranged at the bottom of the first discharging end, a second discharging slide carriage is arranged at the bottom of the second discharging end, and the included angles between the first discharging slide carriage and the second discharging slide carriage and the horizontal plane are 50-55 degrees.
6. A green pellet screening apparatus as claimed in claim 1, wherein each of said first rollers is provided with a first motor at both ends in the axial direction, said first rollers being rotated by said first motors; every both ends along the axis direction of second roller all are equipped with the second motor, the second roller passes through the second motor rotates.
7. The green ball screening device of claim 1, wherein first material blocking plates are arranged on both sides of the first roller screening layer along the axial direction of the first roller; and second baffle plates are arranged on the two sides of the second roller screen layer along the axis direction of the second roller.
8. A green ball screening apparatus as claimed in claim 1, wherein a wet return belt conveyor is provided directly below said second roller screen layer.
9. A cart characterized in that the cart is provided with a green pellet screening device as claimed in any one of claims 1 to 8.
10. A trolley as claimed in claim 9 wherein the side of the trolley adjacent the first infeed end and the second infeed end is an infeed side and the side adjacent the first outfeed end and the second outfeed end is an outfeed side, the infeed side being provided with a bedding device and the outfeed side being provided with a border device, wherein:
the raw ball screening device comprises a raw ball screening device and a raw ball distributing device, wherein the raw ball screening device comprises a raw ball distributing device and a raw ball distributing device, the raw ball distributing device comprises a first chute and two first electric fan-shaped valves, the two first electric fan-shaped valves are oppositely arranged at the top of the first chute, the two first electric fan-shaped valves are communicated with the first chute, and the raw ball screening device is arranged between the two first electric fan-shaped valves;
the edge material paving device comprises two second chutes and two second electric fan-shaped valves, the second chutes and the second electric fan-shaped valves are arranged in a one-to-one correspondence mode, each second electric fan-shaped valve is arranged at the top of the corresponding second chute, each second electric fan-shaped valve is communicated with the corresponding second chute, and the green ball screening device is arranged between the two second chutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121457654.9U CN215844053U (en) | 2021-06-29 | 2021-06-29 | Raw ball screening device and trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121457654.9U CN215844053U (en) | 2021-06-29 | 2021-06-29 | Raw ball screening device and trolley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215844053U true CN215844053U (en) | 2022-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121457654.9U Active CN215844053U (en) | 2021-06-29 | 2021-06-29 | Raw ball screening device and trolley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215844053U (en) |
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2021
- 2021-06-29 CN CN202121457654.9U patent/CN215844053U/en active Active
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