CN214842482U

CN214842482U - Combined material flattening device with adjustable sintering machine material level

Info

Publication number: CN214842482U
Application number: CN202120692222.XU
Authority: CN
Inventors: 戚义龙; 凌明生; 黄足兵; 阿中
Original assignee: Maanshan Iron and Steel Co Ltd
Current assignee: Maanshan Iron and Steel Co Ltd
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2021-11-23
Anticipated expiration: 2031-04-06

Abstract

The utility model discloses a flat material device of combination with adjustable sintering machine charge level relates to metallurgical sintering technical field. The combined material leveling device with the adjustable sintering machine material level comprises a sintering trolley, a sintering multi-roller distributor and a layer thickness meter, wherein a sintering mixture is arranged on the sintering trolley. This flat material device of combination with adjustable sintering machine charge level realizes the first compaction of sintering cloth charge level through once thick flat material device, carries out the fine setting again through the fine flat material device of secondary after, optimizes the compaction regulation, realizes the accurate control of the reasonable degree of compaction of sintering cloth charge level to this flat material device of combination can adapt to the adjustment in the sintering bed of material certain extent, thereby guarantees good flat material quality state. Further promoting the stable development of the subsequent sintering process and realizing the promotion of the sintered mineral quality index. After the sintering, the drum index is improved by 0.46 percent, the sintering yield is improved by about 0.56 percent, the sintering solid consumption is reduced by about 0.39 kg/ton ore, and the return rate of the blast furnace is reduced by about 0.61 percent.

Description

Combined material flattening device with adjustable sintering machine material level

Technical Field

The utility model relates to a metallurgical sintering technical field specifically is a flat material device of combination with adjustable sintering machine charge level.

Background

In the sintering process, various powdery iron-containing raw materials, flux, fuel and return ores are uniformly mixed according to the proportion, are granulated and are tiled on a sintering machine trolley for air draft ignition sintering, and the material distribution thickness of the sintering mixture on the sintering machine trolley can reach 700-plus-material 1100 mm.

The sintering and flattening process is a process before ignition of the sintering machine, and aims to uniformly scrape and reasonably compact the mixed raw materials distributed on a trolley of the sintering machine. Generally, the quality of the material distribution and the material leveling directly influences the subsequent sintering airflow distribution, the development process and sintering consolidation strength of each sintering belt, the main sintering power consumption and the like, and further influences the key indexes of the finished product rate of the sintering ore, the sintering consumption, the quality of the sintering ore and the like.

At present, the sintering trolley material distribution in China commonly uses an integral type material pressing roller and an integral type or sectional type material flattening device, but the devices can not accurately control and adjust the compaction degree of the sintering material distribution surface, and only are used for flattening materials in a passive or driven state, so that the requirements of the subsequent sintering process for smooth development are difficult to adapt, the stability of parameter control in the sintering process is negatively influenced, and further the sintering economic and technical indexes are restricted.

Through patent search, a part of related technical schemes are disclosed. Such as: chinese patent application No. CN205245795U discloses a material leveling device for a sintering pallet, which is composed of a plurality of middle material leveling plates and a plurality of side material leveling plates, wherein the left and right sides of the material surface central line are symmetrically arranged, the adjacent material leveling plates are staggered back and forth, the lower ends of the material leveling plates are kept at the same level, and the higher ends are fixed by hinges or hooks. The balance material leveling device has the defects that balance of the compaction degree of a leveling material can not be kept by timely adjusting the balance weight in real time in the production process, and meanwhile, the mixture bulges easily formed between adjacent leveling plates at the material surface of a sintering trolley due to incomplete compaction, so that the air permeability of the material in the width direction of the trolley is inconsistent, and further the subsequent surface ignition and sintering processes are influenced.

Patent CN208505022U discloses a device for improving the air permeability of a sintering machine charge level, which comprises two triangular supports arranged oppositely, wherein the top ends of the two triangular supports are both hinged with one end of a bearing arm, the other ends of the two bearing arms are connected with the same roller bearing, a steel-structured roller is sleeved outside the roller bearing, and the outer surface of the steel-structured roller is provided with a plurality of rows of short teeth; the air permeability of the charge level of the sintering machine can be improved, the resistance of air passing through the charge level is reduced, particularly after the charge level of the trolley is ignited and crusted, the air permeability of the charge level can be effectively improved through the device, and the power consumption of a fan is reduced; the upper limit of ignition temperature control can be properly released in production, the quality of the sintered ore at the upper part of a material layer of the sintering machine is improved, the return rate of the sintered ore is reduced, and the proportioning and consumption of the sintered solid fuel are reduced. According to the scheme, the air permeability is improved only by forming the air holes in the material surface in a driven mode after sintering ignition, if the front-end cloth is uneven, the air permeability in the width direction of the trolley is prone to being caused artificially, unbalance of the sintering speed in the subsequent width direction is directly affected, and the sintering end point position is prone to being inconsistent and the quality of sintering ores is prone to being reduced.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The not enough to prior art, the utility model provides a flat material device of combination with adjustable sintering machine charge level, it is integral nip roller to have solved present internal sintering platform truck cloth universal use, the flat material device of integral or sectional type, but these devices all exist and can not carry out the accurate control adjustment to the compactness of sintering cloth charge level, only be passive or the flat material under the driven state, the difficult demand that adapts to follow-up sintering process and go forward the development of event, and produce negative effects to the stability of sintering process parameter control, and then lead to the problem of further promotion of restriction sintering economic technology index.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a combined material leveling device with adjustable sintering machine charge level comprises a sintering trolley, a sintering multi-roller distributor and a layer thickness meter, wherein the sintering trolley is provided with a sintering mixture, the layer thickness meter is used for detecting the thickness of the sintering mixture from the multi-roller distributor to the sintering trolley, the combined material flattening device also comprises a primary coarse material flattening device and a secondary fine material flattening device, wherein the primary coarse material flattening device comprises a supporting beam, a fixed supporting vertical plate is fixed on the supporting beam, the fixed supporting vertical plate is hinged with a flattening plate through a hinge supporting plate, a hydraulic push rod device is arranged on the flattening plate, a fixed base is fixedly connected on the hydraulic push rod device, the flattening plate realizes the height adjustment of the flattening plate through the action of the hydraulic push rod device, the hydraulic push rod device can be self-locked at any position within a specified stroke range, the thickness of a material layer is set according to requirements, and further the coarse material flattening compaction of a sintering mixture is realized;

the secondary fine leveling device comprises a circular arc leveling plate, a supporting platform, an electric roller and a fixed beam, wherein the upper part of the circular arc leveling plate is fixedly hung on the fixed beam through a movable hanger, a longitudinal reinforcing rib plate and a transverse reinforcing rib plate are arranged at the tail part of the circular arc leveling plate, a hanging rod is arranged on the longitudinal reinforcing rib plate, the circular arc leveling plate is connected with the electric roller above the circular arc leveling plate through a hanging steel wire rope, a weighing device is arranged between the electric roller and the supporting platform, and a weighing signal of the weighing device participates in the action of the electric roller to realize reasonable control of the stress degree of the circular arc leveling plate on a charge level, so that the uniformity of the compaction degree of a sintering mixture after secondary fine leveling is ensured.

Preferably, the height of a breast board of the sintering trolley is 910mm, the width of the breast board is 5m, and sintering mixture is distributed on the sintering trolley through a multi-roller distributor for subsequent leveling and sintering.

Preferably, the width of the material flattening plate is set to be 4.8m, the material flattening plate is made of stainless steel, and the surface of the lower end face of the material flattening plate is covered with a silicon nitride ceramic layer.

Preferably, the fixed stay riser passes through the hinged-support board and sets up for bilateral symmetry, and concrete position setting is in the 3/4 department of flat flitch width direction, and the distance that is apart from flat flitch both sides limit is 1.2m promptly, and on the unable adjustment base and hydraulic push rod device are the symmetry setting, concrete position setting is in the 3/4 department of flat flitch width direction, and the distance apart from flat flitch both sides limit is 1.2m promptly.

Preferably, the stroke position of the hydraulic push rod device correspondingly displays the height of the adjusted bottom edge of the leveling plate, namely the height of the primary leveling, and the height of the leveling plate can realize the adjustment of any distance of 600-900mm away from the bottom grate bar of the sintering trolley.

Preferably, the width of the circular arc flat plate is 4.8m, a plurality of equidistant transverse reinforcing rib plates and longitudinal reinforcing rib plates are arranged at the straight section of the tail part of the circular arc flat plate so as to ensure that the circular arc flat plate does not deform under long-term stress and ensure that the material surface after material pressing is uniform, the circular arc flat plate is made of stainless steel, and the lower surfaces of the circular arc section and the tail flat plate section are covered with silicon nitride ceramic layers.

Preferably, the hanging steel wire rope, the electric roller and the weighing device are symmetrically arranged, the specific positions are arranged at 3/4 positions in the width direction of the circular arc-shaped flat plate, namely, the distance between the two sides of the circular arc-shaped flat plate is 1.2m, the structural size and the hanging height of the circular arc-shaped flat plate are arranged, the requirement that the tail section of the circular arc-shaped flat plate can reach the height of 550mm away from the grate bars at the bottom of the sintering trolley in a free state can be met, and the sintering mixture layer can be leveled when the sintering material layer is at any distance position of 600 plus 900 mm.

(III) advantageous effects

The utility model provides a flat material device of combination with adjustable sintering machine charge level. The method has the following beneficial effects: the combined material flattening device with the adjustable sintering machine material level realizes primary compaction of a sintering material distribution material level through a primary coarse material flattening device, and then finely adjusts and compacts through a secondary fine material flattening device, the primary coarse material flattening device can be self-locked at any position within a specified stroke range by adopting a hydraulic push rod device, the material layer thickness is set as required, further the coarse material flattening compaction of a sintering mixture is realized, the function of digitally displaying the set height of a flattening plate according to the stroke position of a hydraulic cylinder is achieved, the secondary fine material flattening device adopts a flexible circular arc-shaped flattening plate structure form, the detection value of a weighing device is set through a tail hanging system, the display of the stress state of the secondary material flattening device on the sintering material distribution material level is realized, and under the condition that the primary material flattening height is constant, the temperature level, such as a burning through point, of a material is controlled according to the relevant process parameters of subsequent sintering, And (3) carrying out program automatic optimization judgment on the drum strength and the internal return rate of the sinter, and the like, and judging the optimal stress state and the corresponding weighing numerical value of the secondary fine flat material of the circular arc flat material plate so as to control the stress degree of the charge level to be reasonably interlocked and adjusted. Thereby ensuring the uniformity and consistency of the compaction degree of the sintering mixture after the secondary fine flattening.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 101. the device comprises a sintering multi-roller distributor, 102 sintered mixture, 103 a sintering trolley, 104 a layer thickness gauge, 105 a flat material plate, 106 a hydraulic push rod device, 107 a fixed base, 108 a hinge support plate, 109 a fixed support vertical plate, 110 a support beam, 111 an arc flat material plate, 112 a movable fixed hanger, 113 a fixed beam, 114 an electric roller, 115 a weighing device, 116 a support platform, 117 a hanger steel wire rope, 118 a hanger rod, 119 a transverse reinforcing rib plate and 120 a longitudinal reinforcing rib plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: a combined material leveling device with adjustable sintering machine charge level comprises a sintering trolley 103, a sintering multi-roller distributor 101 and a layer thickness gauge 104, wherein the height of a breast board of the sintering trolley 103 is 910mm, the width of the breast board is 5m, the sintering mixture 102 is distributed on the trolley 103 through the multi-roller distributor 101 for subsequent leveling and sintering, the sintering mixture 102 is arranged on the sintering trolley 103, the layer thickness gauge 104 is used for detecting the thickness of the sintering mixture 102 from the multi-roller distributor 101 to the sintering trolley 103, the combined material leveling device further comprises a primary coarse material leveling device and a secondary fine material leveling device, the primary coarse material leveling device comprises a supporting beam 110, a fixed supporting vertical plate 109 is fixed on the supporting beam 110, the fixed supporting vertical plate 109 is symmetrically arranged at two sides through a hinge supporting plate 108, the specific position is arranged at 3/4 in the width direction of the material plate 105, namely, the distance from the two sides of the material plate is 1.2m, the fixed base 107 and the hydraulic push rod device 106 are symmetrically arranged, the specific positions are arranged at 3/4 in the width direction of the leveling plate 105, namely, the distance from two side edges of the leveling plate is 1.2m, the fixed supporting vertical plate 109 is hinged with the leveling plate 105 through the hinge supporting plate 108, the width of the leveling plate 105 is 4.8m, the leveling plate is made of stainless steel, the surface of the lower end surface of the leveling plate is covered with a silicon nitride ceramic layer, the hydraulic push rod device 106 is arranged on the leveling plate 105, the stroke position of the hydraulic push rod device 106 corresponds to the adjusted bottom edge height of the leveling plate 105, namely, the one-time leveling height, the leveling plate height can realize the adjustment of any distance of 600 plus 900mm from the bottom grate bar height of the sintering trolley 103, the fixed base 107 is fixedly connected to the hydraulic push rod device 106, the leveling plate 105 realizes the height adjustment of the leveling plate 105 through the action of the hydraulic push rod device 106, the hydraulic push rod device 106 can be self-locked at any position within a specified stroke range, and the thickness of a material layer is set as required, so that the coarse flat material compaction of the sintering mixture 102 is realized;

the secondary fine material flattening device comprises an arc-shaped material flattening plate 111, a supporting platform 116, an electric roller 114 and a fixed beam 113, wherein the width of the arc-shaped material flattening plate 111 is 4.8m, a straight section at the tail part of the arc-shaped material flattening plate 111 is provided with a plurality of equidistant transverse reinforcing rib plates 119 and longitudinal reinforcing rib plates 120 so as to ensure that the arc-shaped material flattening plate 111 does not deform under long-term stress, thereby ensuring that the material surface after material pressing is uniform, the arc-shaped material flattening plate 111 is made of stainless steel, the lower surfaces of the arc section and the tail part material flattening section are covered with a silicon nitride ceramic layer, the upper part of the arc-shaped material flattening plate 111 is hung on the fixed beam 113 through a movable fixed hanger 112, the tail part of the arc-shaped material flattening plate 111 is provided with the longitudinal reinforcing rib plates 120 and the transverse reinforcing rib plates 119, a hanging rod 118 is arranged on the longitudinal reinforcing rib plates 120, and the arc-shaped material flattening plate 111 is connected with the electric roller 114 above through a hanging steel wire rope 117, the hanging steel wire rope 117, the electric roller 114 and the weighing device 115 are symmetrically arranged, the specific positions are arranged at 3/4 positions in the width direction of the circular arc-shaped flat material plate 111, namely, the distance between the hanging steel wire rope and the two side edges of the flat material plate is 1.2m, the structural size and the hanging height of the circular arc-shaped flat material plate 111 are arranged, the requirement that the tail section of the circular arc-shaped flat material plate can reach the grate bar height of 550mm from the bottom of the sintering trolley 103 in a free state can be met, the sintering material layer can be flattened to a sintering mixture at any distance position of 600-900mm, the weighing device 115 is arranged between the electric roller 114 and the supporting platform 116, the weighing signal of the weighing device 115 participates in the action of the electric roller 114 to achieve reasonable control of the stress degree of the circular arc-shaped flat material plate 111 on the material surface, and therefore the uniformity of the compaction degree of the sintering mixture after secondary fine flattening is guaranteed.

The combined material flattening device with the adjustable sintering machine material level realizes primary compaction of a sintering material distribution material level through a primary coarse material flattening device, and then finely adjusts and compacts through a secondary fine material flattening device, the primary coarse material flattening device can be self-locked at any position within a specified stroke range by adopting a hydraulic push rod device, the material layer thickness is set as required, further the coarse material flattening compaction of a sintering mixture is realized, the function of digitally displaying the set height of a flattening plate according to the stroke position of a hydraulic cylinder is achieved, the secondary fine material flattening device adopts a flexible circular arc-shaped flattening plate structure form, the detection value of a weighing device is set through a tail hanging system, the display of the stress state of the secondary material flattening device on the sintering material distribution material level is realized, and under the condition that the primary material flattening height is constant, the temperature level, such as a burning through point, of a material is controlled according to the relevant process parameters of subsequent sintering, And (3) carrying out program automatic optimization judgment on the drum strength and the internal return rate of the sinter, and the like, and judging the optimal stress state and the corresponding weighing numerical value of the secondary fine flat material of the circular arc flat material plate so as to control the stress degree of the charge level to be reasonably interlocked and adjusted. Thereby ensuring the uniformity and consistency of the compaction degree of the sintering mixture after the secondary fine flattening.

The utility model discloses a thick planishing material device realizes the first compaction of sintering cloth charge level, and the fine setting is carried out through the thin planishing material device of secondary again to the back and is optimized the compaction and adjust, realizes the accurate control of the reasonable compactness of sintering cloth charge level to the adjustment in this combination planishing material device can adapt to the sintering bed of material certain limit, thereby guarantees good planishing material quality state. Further promoting the stable development of the subsequent sintering process and realizing the promotion of the sintered mineral quality index. After the sintering, the drum index is improved by 0.46 percent, the sintering yield is improved by about 0.56 percent, the sintering solid consumption is reduced by about 0.39 kg/ton ore, and the return rate of the blast furnace is reduced by about 0.61 percent.

Wherein, the utility model discloses the concrete implementation effect data table is as follows:

in summary, the combined material flattening device with adjustable material level of the sintering machine realizes the primary compaction of the material level of the sintering material distribution through the primary coarse material flattening device, and then carries out the fine adjustment compaction through the secondary fine material flattening device, the primary coarse material flattening device adopts a hydraulic push rod device to be self-locked at any position within a specified stroke range, the thickness of the material layer is set according to needs, the coarse material flattening compaction of the sintering mixture is further realized, the function of digitally displaying the set height of the material flattening plate according to the stroke position of a hydraulic cylinder is achieved, the secondary fine material flattening device adopts a flexible circular arc-shaped material flattening plate structure form, the detection value of the weighing device is set through the tail hanging system, the display of the stress state of the sintering material distribution surface generated by the secondary material flattening device is realized, and under the condition of certain primary material flattening height, the temperature level, the depth and the like the penetration point of the subsequent sintering material distribution surface are determined according to the parameters and indexes, And (3) carrying out program automatic optimization judgment on the drum strength and the internal return rate of the sinter, and the like, and judging the optimal stress state and the corresponding weighing numerical value of the secondary fine flat material of the circular arc flat material plate so as to control the stress degree of the charge level to be reasonably interlocked and adjusted. Thereby ensuring the uniformity and consistency of the compaction degree of the sintering mixture after the secondary fine flattening.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a combination material flattening device with adjustable sintering machine charge level, includes sintering pallet (103), sintering multi-roller distributing device (101) and bed thickness appearance (104), be provided with sinter mixture (102) on sintering pallet (103), bed thickness appearance (104) are used for detecting the thickness of sinter mixture (102) on multi-roller distributing device (101) to sintering pallet (103), its characterized in that: the combined material flattening device further comprises a primary coarse material flattening device and a secondary fine material flattening device, the primary coarse material flattening device comprises a supporting beam (110), a fixed supporting vertical plate (109) is fixed on the supporting beam (110), the fixed supporting vertical plate (109) is hinged to a flattening plate (105) through a hinge supporting plate (108), a hydraulic push rod device (106) is arranged on the flattening plate (105), a fixed base (107) is fixedly connected to the hydraulic push rod device (106), the flattening plate (105) achieves height adjustment of the flattening plate (105) through action of the hydraulic push rod device (106), the hydraulic push rod device (106) can be self-locked at any position within a specified stroke range, the thickness of a material layer is set according to needs, and coarse material flattening compaction of a sintering mixture (102) is achieved;

the secondary fine material flattening device comprises an arc-shaped material flattening plate (111), a supporting platform (116), an electric roller (114) and a fixed beam (113), the upper part of the circular arc flat material plate (111) is hung on a fixed beam (113) through a movable fixed hanger (112), the tail part of the circular arc flat material plate (111) is provided with a longitudinal reinforcing rib plate (120) and a transverse reinforcing rib plate (119), the longitudinal reinforcing rib plate (120) is provided with a hanging rod (118), the circular arc flat plate (111) is connected with an electric roller (114) above through a hanging steel wire rope (117), a weighing device (115) is arranged between the electric roller (114) and the supporting platform (116), the weighing signals of the weighing device (115) participate in the action of the electric roller (114) to reasonably control the stress degree of the arc-shaped material leveling plate (111) on the material surface, so that the uniformity of the compaction degree of the sintering mixture after secondary fine leveling is ensured.

2. The adjustable combined material leveling device for the sintering machine material level according to claim 1, characterized in that: the height of a breast board of the sintering trolley (103) is 910mm, the width of the breast board is 5m, and a sintering mixture (102) is distributed on the trolley through a multi-roller distributor (101) above the sintering trolley (103) for subsequent leveling and sintering.

3. The adjustable combined material leveling device for the sintering machine material level according to claim 1, characterized in that: the width of the material flattening plate (105) is set to be 4.8m, the material flattening plate is made of stainless steel, and a silicon nitride ceramic layer covers the surface of the lower end face of the material flattening plate.

4. The adjustable combined material leveling device for the sintering machine material level according to claim 1, characterized in that: fixed stay riser (109) are bilateral symmetry through hinge support plate (108) and set up, and concrete position setting is in the 3/4 department of flitch (105) width direction of putting down, and the distance apart from flitch both sides limit is 1.2m promptly, unable adjustment base (107) go up and hydraulic push rod device (106) are the symmetry setting, and concrete position setting is in the 3/4 department of flitch (105) width direction of putting down, and the distance apart from flitch both sides limit is 1.2m promptly.

5. The adjustable combined material leveling device for the sintering machine material level according to claim 1, characterized in that: the stroke position of the hydraulic push rod device (106) correspondingly displays the height of the adjusted bottom edge of the leveling plate (105), namely the height of one-time leveling, and the height of the leveling plate can realize the adjustment of any distance of 600-900mm away from the bottom grate bar of the sintering trolley (103).

6. The adjustable combined material leveling device for the sintering machine material level according to claim 1, characterized in that: the width of the circular arc-shaped flat plate (111) is 4.8m, a straight section at the tail part of the circular arc-shaped flat plate (111) is provided with a plurality of equidistant transverse reinforcing rib plates (119) and longitudinal reinforcing rib plates (120) so as to ensure that the circular arc-shaped flat plate (111) does not deform under long-term stress, thereby ensuring that the material surfaces after material pressing are uniform, the circular arc-shaped flat plate (111) is made of stainless steel, and the lower surfaces of the circular arc section and the tail part flat plate section are covered with silicon nitride ceramic layers.

7. The adjustable combined material leveling device for the sintering machine material level according to claim 1, characterized in that: the hanging steel wire rope (117), the electric roller (114) and the weighing device (115) are symmetrically arranged, the specific positions are arranged at 3/4 positions in the width direction of the circular arc-shaped flat material plate (111), namely, the distance between the hanging steel wire rope and two side edges of the flat material plate is 1.2m, the structural size and the hanging height of the circular arc-shaped flat material plate (111) can meet the requirement that the tail section of the circular arc-shaped flat material plate can reach the height of 550mm from a grate bar at the bottom of the sintering trolley (103) in a free state, and the sintering material layer can be leveled to the sintering mixture when the sintering material layer is at any distance position of 600 plus 900 mm.