CN110560647A - Vertical casting machine, and molten alloy iron granulating system and method - Google Patents
Vertical casting machine, and molten alloy iron granulating system and method Download PDFInfo
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- CN110560647A CN110560647A CN201910898506.1A CN201910898506A CN110560647A CN 110560647 A CN110560647 A CN 110560647A CN 201910898506 A CN201910898506 A CN 201910898506A CN 110560647 A CN110560647 A CN 110560647A
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- 238000005266 casting Methods 0.000 title claims abstract description 201
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 180
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 90
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 65
- 239000000956 alloy Substances 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000000843 powder Substances 0.000 claims abstract description 61
- 238000005469 granulation Methods 0.000 claims abstract description 19
- 230000003179 granulation Effects 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000012216 screening Methods 0.000 claims abstract description 17
- 235000013312 flour Nutrition 0.000 claims abstract description 10
- 238000011068 loading method Methods 0.000 claims abstract description 6
- 239000003566 sealing material Substances 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 24
- 239000003638 chemical reducing agent Substances 0.000 claims description 19
- 239000007921 spray Substances 0.000 claims description 18
- 238000003860 storage Methods 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000008859 change Effects 0.000 claims description 13
- 238000005096 rolling process Methods 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 230000005571 horizontal transmission Effects 0.000 claims 3
- 238000007873 sieving Methods 0.000 abstract description 4
- 229910001021 Ferroalloy Inorganic materials 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 239000011819 refractory material Substances 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 238000007373 indentation Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
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- 210000004907 gland Anatomy 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000010298 pulverizing process Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- PTVDYARBVCBHSL-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu] PTVDYARBVCBHSL-UHFFFAOYSA-N 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 230000017105 transposition Effects 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 241001025261 Neoraja caerulea Species 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Inorganic materials [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000005552 hardfacing Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D37/00—Controlling or regulating the pouring of molten metal from a casting melt-holding vessel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/06—Ingot moulds or their manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/12—Appurtenances, e.g. for sintering, for preventing splashing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D9/00—Machines or plants for casting ingots
- B22D9/003—Machines or plants for casting ingots for top casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a vertical casting machine, an alloy molten iron granulating system and a method, wherein the vertical casting machine comprises a rack, a top groove, a casting mold platform, a casting mold, a bottom groove, a slewing bearing and a variable speed driver; the alloy molten iron granulating system comprises a multi-flow bag, a granulating machine, a screening machine, a flour mill, a lifter, a flour feeder and the vertical casting machine; the alloy molten iron granulation method comprises the following steps: the powder is used as the bottom seal of a casting mould, and molten iron is continuously cast into an ingot by the casting mould on a horizontal rotating vertical casting machine; demoulding the cast ingot at the temperature of 600-1300 ℃, continuously crushing the cast ingot into granular alloy in a granulator, and sieving the granular alloy by a sieving machine; directly crushing the powder on line by using undersize; the powder is sent to a powder feeder on line and then enters the bottom of a casting mould of a vertical casting machine to be used as a bottom laying sealing material or a multi-flow bag to be remelted; and (5) loading the oversize materials into a bucket in an off-line mode. The vertical casting machine, the molten alloy iron granulating system and the method improve the granulating efficiency of molten alloy iron, and the yield and quality of molten iron.
Description
Technical Field
The invention relates to the technical field of steel smelting, in particular to a vertical casting machine, an alloy molten iron granulating system and an alloy molten iron granulating method.
Background
The grain size of the ferroalloy used in the steel making process is generally 10 to 60 mm. The current production methods of ferroalloys with such particle sizes include the following:
(1) Casting pit layer casting: the two casting pits are used in turn, and the casting pits are surrounded by thick and large cast iron blocks. After the first casting pit is full, the ferroalloy is shoveled by a loader and is transported to a transport vehicle to be transferred to a jaw crusher for crushing and screening, and the particles meet the contract requirements of bagging and packaging and are not qualified or are sold at low cost or are remelted in a furnace. The smaller ferroalloy enterprises adopt a large ingot mould or a sand pit to cast liquid ferroalloy into a large iron ingot with the single weight of about 2000kg, and after cooling, the liquid ferroalloy is manually deslagged, impurity removed and crushed into particles with the particle size of 10-60 mm. There are five major problems: firstly, the alloy has high pulverization rate, and the unqualified powder is usually 5 to 20 percent; secondly, the process is long, the labor productivity is low, and the quality is difficult to control; secondly, the time from tapping to packing lasts for more than 2 days, and an enterprise producing 1000 tons of alloy per day needs about 500 persons to carry out finishing and crushing, so that the labor cost is high, and the time consumption is long; thirdly, the environmental pollution is serious, and the iron alloy forms a big mushroom cloud direct-flushing blue sky along with high-temperature heat waves due to high-concentration dust generated by the contact of the ingot mold coating and high-temperature molten iron during casting, so that the environmental pollution and the atmosphere are serious; fourthly, the casting workshops are dirty, messy and hot, the whole workshop is a ladle, refractory materials, a sand mold or an ingot mold, coating and the like which are used all at present, and most of the casting workshops of enterprises have no qualified safety channel and have serious potential safety hazards; fifthly, in the processes of slag skimming, casting and finishing, workers must work at the environmental temperature of 1500-300 ℃, and the working environment is severe.
(2) Casting by a belt casting machine: the molten iron was continuously cast using a belt caster and then manually crushed. The method is that a flat plate type ingot mould for casting is arranged on a belt type machine, a motor drives a chain to rotate after speed reduction, and the mould arranged on a transmission belt continuously moves along with the chain. When the device is used, the belt casting machine is started, the crane is used for hoisting and conveying the molten iron to a casting station or a tipping device, the molten iron in the ladle is slowly injected into an ingot mould on a continuously moving transmission belt or is introduced into the casting mould through a flow divider and a slag decanter by manual control, finally, cast ingots with the length and the width of 500-1000mm and the thickness of 50-70mm are obtained, and the cast ingots are demolded and cooled and then are manually crushed into the granularity of 10-60 mm. The mode has certain effects of improving the production efficiency and reducing the labor intensity. The problems that it has: firstly, high-temperature molten iron is continuously flushed to the mold wall and the mold bottom, so that the mold is seriously damaged, and the cost of the mold of a unit product is high; secondly, in the casting process, molten iron directly rushes to the die wall, the die edge and the die bottom, so that the splashing is serious, and a gap between the dies has more iron leakage, so that the yield of the molten iron is low; thirdly, the length of the belt casting machine is usually as long as 50-100m, the weight of the equipment is large, and the occupied area is large; fourthly, the alloy pulverization rate is high, and the yield is low; fifthly, casting dust and smoke are difficult to capture, and the environmental pollution is serious.
(3) Casting by a disc casting machine: the equipment for casting the copper anode plate comprises a disc, a driving system of the disc, a quantitative casting device, a spraying cooling system, a pre-jacking and jacking device, a mold locking device, an extractor, a cooling stacking device, a mold coating system and the like. The copper water flows from a copper outlet of the anode furnace to a tundish through a chute, the tundish is equivalent to a copper water storage device and alternately pours the copper water to casting ladles on two sides, the casting ladles are arranged on an electronic scale and are collectively called as a quantitative casting device, and the weight of a cast anode plate is controlled by the quantitative casting device; in the whole casting process, the disc is in the alternate of operation and stop, when the disc is static, the quantitative casting device pours molten copper into the casting mould, after casting, the disc rotates two mould positions, and the next anode plate is cast; after the anode plate is sprayed and cooled, the anode plate is loosened by pre-jacking, and in order to balance the upward acting force applied to the disc by the pre-jacking device, a mold locking mechanism is arranged above the copper mold corresponding to the pre-jacking position; taking the loosened qualified anode plate away by an extractor, and taking the unqualified anode plate away by a waste anode crane; the anode plates taken away by the extractor are placed into a water tank for cooling again and are automatically arranged into an anode stack, and finally the anode stack is transported away by a forklift. The empty copper mold is transferred to a coating station where the coating system sprays the BaS04 mixture to prevent the anode plate from "sticking". The continuous casting can be realized by continuously repeating the process. The weight of one anode plate is 250-300kg, and the rotation period of the disc is about 30 s. If the casting method and the casting equipment are applied to ferroalloy casting, massive ferroalloy is obtained, and the problem of the massive ferroalloy is basically consistent with that of a belt casting machine.
disclosure of Invention
the invention aims to provide a vertical casting machine, an alloy molten iron granulating system and a method, which are used for solving the problems in the prior art and improving the efficiency of granulating the alloy molten iron and the yield and quality of the molten iron.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a vertical casting machine, which comprises a rack, a top groove, a casting mould platform, a casting mould, a bottom groove, a rotating supporting part and a variable speed driver, wherein the top groove is arranged on the rack; the top groove is fixedly arranged at the top end of the casting mould platform, the top groove is an annular groove body, and a bottom plate of the top groove is provided with a plurality of vertical through holes which are in one-to-one correspondence with mould positions on the casting mould platform; the casting mould platform comprises a top flange, a connecting plate and a bottom plate which are sequentially connected, a plurality of first demoulding holes which are in one-to-one correspondence with mould positions on the casting mould platform are formed in the bottom plate of the casting mould platform, a casting mould is arranged on each first demoulding hole, and the casting mould is clamped between the top groove and the bottom plate of the casting mould platform;
the bottom groove is fixedly arranged on the rack, the top surface of the bottom groove is in sliding fit with the bottom plate of the casting mold platform, an annular groove is formed in the top surface of the bottom groove, and a second demolding hole communicated with the groove is formed in the bottom of the bottom groove; the casting mould platform is rotationally connected with the rack through the rotating support part, and the variable speed driver can drive the casting mould platform to rotate.
Preferably, the variable speed driver comprises an input shaft, a variable speed cam, an output shaft, a rotary disc and a driving gear, the variable speed cam is fixedly arranged on the input shaft, the rotary disc and the driving gear are fixedly arranged on the output shaft, the output shaft is vertical, a plurality of needle roller bearings are uniformly distributed on the rotary disc, the distance from each needle roller bearing to the center of the rotary disc is equal, the outer rings of the needle roller bearings are in rolling contact with the ridges of the variable speed cam, and one end of the input shaft is in transmission connection with external power; the variable speed cam is provided with a deformed sinusoidal wheel ridge and a spiral wheel ridge with a constant lead angle, and the deformed sinusoidal wheel ridge is superposed with the tangent line of the head-tail point of the spiral wheel ridge.
Preferably, the device further comprises a vertical reciprocating mechanism, the vertical reciprocating mechanism comprises a transmission shaft connected with the other end of the input shaft through a coupler, the transmission shaft is coaxial with the input shaft, the transmission shaft is rotatably arranged in the two rolling bearings, one end of the transmission shaft, which is far away from the input shaft, is provided with a first inertia wheel, a rim of the first inertia wheel is rotatably connected with one end of a connecting rod, and the other end of the connecting rod is rotatably connected with the sliding rod; the utility model discloses a sprayer, including the slide bar, the top of slide bar is fixed connection a horizontal pole, spring vibration pole and sprayer spray tube, the slide bar is vertical and by vertical positioning under the effect of two sets of roller trains, the top of slide bar has linked firmly a horizontal pole, still linked firmly spring vibration pole and sprayer spray tube on the horizontal pole, spring vibration pole with the sprayer spray tube is also respectively by two sets of roller train vertical positioning.
preferably, the variable speed driver comprises a worm, a turbine, an output shaft and a driving gear, the turbine and the driving gear are fixedly arranged on the output shaft, the output shaft is vertical, the turbine is meshed with the worm, one end of the worm is connected with the output shaft of the speed reducer, and the input shaft of the speed reducer is connected with the output shaft of the servo motor.
preferably, the vertical reciprocating mechanism comprises a crankshaft connected with the other end of the worm through a coupler, the crankshaft is coaxial with the worm, one end of the crankshaft, which is far away from the input shaft, is connected with one end of a connecting rod, and the other end of the connecting rod is connected with a sliding bearing; the sliding bearing is fixedly connected with a cross rod, the cross rod is further fixedly connected with a spring vibrating rod and a sprayer spray pipe, and the spring vibrating rod and the sprayer spray pipe are vertically positioned by two groups of roller groups respectively.
Preferably, the rotating support part is a slewing bearing, a driven gear which is fixedly connected with the casting mould platform and is coaxial with the casting mould platform is arranged on the slewing bearing, and the driven gear is horizontally meshed with a driving gear in the variable speed drive.
Preferably, the rotation support part comprises a pin wheel and at least three roller supports, and the casting mould platform is fixedly connected with the pin wheel; the roller is supported and fixed on the bracket; the bottom surface of the pinwheel is in rolling contact with the roller supported by the roller.
Preferably, the casting mold is in a hollow oblate arc upright column shape, a hollow rectangular upright column shape, a hollow circular upright column shape, a hollow elliptic upright column shape or a hollow polygonal upright column shape; a partition plate, a riding wheel group and powder are arranged in the groove of the bottom groove, and the riding wheel group is in rolling contact with the bottom surface of the bottom plate of the vertical casting machine platform; the shapes of the cross sections of the vertical through hole, the first demolding hole and the second demolding hole are matched with the shape of the cross section of the ingot.
The invention also provides an alloy molten iron granulating system which comprises a multi-flow bag, a granulating machine, a screening machine, a powder making machine, a lifting machine, a powder adding device and the vertical casting machine, wherein the multi-flow bag is arranged above the top groove of the vertical casting machine, a gap is formed between the multi-flow bag and the top groove, a plurality of vertical direct-current holes are formed in the bottom surface of the multi-flow bag, the direct-current holes can be coaxial with the casting mold, and the distance between every two adjacent direct-current holes is equal to the distance between every two adjacent mold positions on the casting mold platform; perpendicular casting machine the granulator divide the screen (ing) machine the cornmill the lifting machine reaches the powder feeder links to each other in proper order, the powder feeder set up in the top of perpendicular casting machine, the powder feeder includes storage silo and feeder, the overflow chute on storage silo upper portion stretches into many streams package, the bottom of storage silo is provided with the push-pull valve, the feeder set up in the bottom of storage silo.
Preferably, the multi-flow ladle casting device further comprises a liquid level detector for detecting the liquid level of the molten iron in the multi-flow ladle or the casting mold, and whether the molten iron is injected into the multi-flow ladle or not is judged according to a signal of the liquid level detector.
Preferably, the granulator comprises a motor, a speed reducer, a driving roller, a driven roller and a granulator frame, wherein a shaft of the motor drives an input shaft of the speed reducer, an output shaft of the speed reducer drives the driving roller to rotate, the driving roller and the driven roller are both rotatably arranged on the granulator frame, and the minimum distance between the roller surface of the driving roller and the roller surface of the driven roller is 1-50mm smaller than the thickness of the cast ingot.
the invention also provides an alloy molten iron granulation method which comprises the following steps: sealing the bottom of the casting mold by using powder, and continuously casting molten iron into an ingot on a vertical casting machine which circularly and horizontally rotates; demoulding the cast ingot at the temperature of 600-1300 ℃, directly conveying the cast ingot to a granulator on line after demoulding, and continuously crushing the cast ingot into granular alloy; conveying the granular alloy to a screening machine on line for screening; directly crushing the undersize materials into powder on line through a flour mill; the powder is sent to a powder feeder on line and then enters the bottom of a casting mold cavity of a vertical casting machine to be used as a bottom laying sealing material or a multi-flow bag to be remelted; and (5) loading the oversize materials into a bucket in an off-line mode.
compared with the prior art, the vertical casting machine and the molten alloy iron granulating system and method have the following technical effects:
Firstly, the pulverization rate is low: the cast ingot is cracked under high temperature and light pressure by an impression roller to prepare granular alloy, and the undersize material is directly returned to the casting mould on line or remelted by a multi-flow package, so that nearly 100% of the cast molten iron becomes qualified granules, and the problem of high crushing and pulverizing rate (5-20%) in the industry is solved. Secondly, the yield of the molten iron is high: the molten iron is mainly injected into the model cavity at the stage of slow displacement without splashing loss, a small amount of splashed molten iron is collected by the annular top groove and flows into the mould during rapid transposition, and the splashing loss is very small, so that the molten iron is approximately 100 percent and is converted into an alloy cast ingot, and the problems of serious splashing, large iron leakage at a machine head and low yield of 2 to 5 percent of molten iron loss caused by the two in the traditional technology are solved. And the consumption cost of the unit product mould is low: the high-temperature molten iron does not directly wash the mold wall and is cast under the protection of the coating, so the service life of the mold is long, the mold cost of a unit product is low, and the mold cost of the unit product is reduced by more than 50 percent compared with the mold cost of the unit product in the existing method. Fourthly, the production efficiency is high: the time from the casting of molten iron to the off-line of the product is less than 5 minutes, which is increased by several times compared with the traditional process from several hours to tens of hours. Fifthly, environmental protection and cleaning: the molten iron is relatively stable, the small flow is stable, the mold is filled, and the generated smoke is small and easy to capture. Sixthly, the automation degree is high, the operation is stable, the mould positions are more, and the load is large; the equipment is compact, the occupied area is small, the investment of a factory building is reduced, the problem of labor tension is solved, and intelligent manufacturing and safe production are realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in 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, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a flowchart illustrating a method for granulating molten alloy iron according to the present invention;
FIG. 2 is a first schematic structural diagram of a first exemplary system for granulating molten alloy iron according to the present invention;
FIG. 3 is a schematic structural diagram of a first exemplary system for granulating molten alloy iron according to the present invention;
FIG. 4 is a top plan view of the molten alloy iron granulation system of FIG. 3 in accordance with the present invention;
FIG. 5 is a cross-sectional view of a casting mold in accordance with an embodiment of the molten alloy iron granulation system of the present invention;
FIG. 6 is a schematic structural view of a bottom trough of an embodiment of the molten alloy iron granulation system according to the present invention;
FIG. 7 is a schematic structural diagram of a transmission driver according to an embodiment of the molten alloy iron granulation system of the present invention;
FIG. 8 is a first schematic structural diagram of a granulator in accordance with an embodiment of the present invention;
FIG. 9 is a top view of a granulator according to an embodiment of the molten alloy iron granulation system of the present invention;
FIG. 10 is a schematic view showing a pin wheel according to a second embodiment of the molten alloy iron granulation system of the present invention
FIG. 11 is a schematic view illustrating a structure of a roller support according to a second embodiment of the molten alloy iron granulation system of the present invention;
FIG. 12 is a cross-sectional view of a casting mold in a second embodiment of the molten alloy iron granulation system according to the present invention;
Wherein, the device comprises a 1-liquid level detector, a 2-multi-stream pack, a 3-frame, a 4-powder feeder, a 5-vertical casting machine, a 6-refractory material or alloy powder and graphite powder mixture, a 5.1-vertical reciprocating mechanism, a 5.1.1-cross bar, a 5.1.2-roller group, a 5.1.3-slide bar, a 5.1.4-spring vibrating bar, a 5.1.5-sprayer spray pipe, a 5.1.6-cross slide block coupler, a 5.1.7-bearing seat, a 5.1.8-transmission shaft, a 5.1.9-first inertia wheel, a 5.1.10-connecting bar, a 5.2-top groove, a 5.3-casting mould platform, a 5.4-casting mould, a 5.5-bottom groove, a 5.5.5.1-first fixed shaft, a 5.5.2-bearing gland, a 5.5.3-first bearing, a 5.5.4-roller, a 5.5.5.5-sealing ring, a 5.6-rotary bearing, a 5.7-variable speed driver, a 5.7-speed variable speed driver, 5.7.1-driving gear, 5.7.2-output shaft, 5.7.3-rotary disc, 5.7.4-needle bearing, 5.7.5-speed change cam, 5.7.6-input shaft, 5.11-pin wheel, 5.11.1-panel, 5.11.2-pin column, 5.11.3-connecting plate, 5.11.4-bottom plate, 5.11.5-rib plate, 5.12-roller support, 5.12.1-supporting frame, 5.12.2-roller, 5.12.3-second fixed shaft, 5.12.4-gland, 5.12.5-second bearing, 6.1-motor, 6.2-reduction box, 6.3-second inertia wheel, 6.4-granulator frame and 6.5-indentation roller.
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.
The invention aims to provide a vertical casting machine, an alloy molten iron granulating system and a method, which are used for solving the problems in the prior art and improving the granulating efficiency of the alloy molten iron, the yield of the molten iron and the quality of the molten iron.
in order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
As shown in fig. 1-9, the present embodiment provides a vertical casting machine 5 comprising a frame 3, a top trough 5.2, a mold platform 5.3, a mold 5.4, a bottom trough 5.5, a slewing bearing 5.6, a variable speed drive 5.7 and a vertical reciprocating mechanism 5.1.
the top groove 5.2 is a circular groove body arranged on a circular steel plate, the top groove 5.2 is coaxial with the circular steel plate, the circular steel plate is fixedly arranged at the top end of the casting mould platform 5.3, the top groove 5.2 is provided with a horizontal annular bottom plate, a large circular ring and a small circular ring are arranged on the bottom plate, the two circular rings are concentric and have a height of 50-500mm, a plurality of first bolt holes are formed in a circle with a diameter larger than the outer diameter of the large circular ring, the first bolt holes are used for connecting a long bolt with the bottom plate of the casting mould platform 5.3 to tightly press the casting mould 5.4, a plurality of second bolt holes are formed in the bottom plate with a diameter smaller than the inner diameter of the small circular ring, and the second bolt holes are used for fixing the top groove 5.2 on a flange on the top. Fillets or chamfers are arranged at the joints of the large and small circular rings and the horizontal bottom plate; 29-301 vertical through holes (the specific number is consistent with the number of the mold platform 5.3 mold positions) are formed in the bottom plate at the bottom of the groove, and in the embodiment, the size and the shape of the vertical through holes are similar to the cross section of an ingot (molten iron flowing out of the multi-flow bag 2 straight-flow hole enters a mold cavity 5.4 of the mold from the vertical through holes.
The casting mould platform 5.3 comprises a top flange, a connecting plate and a bottom plate which are connected in sequence, and the top flange is provided with a plurality of bolt holes for fixing the top groove 5.2 on the casting mould platform 5.3; 29-301 first demoulding holes (the shape is similar to the cross section of the ingot and is slightly larger, and the number is consistent with the number of mould positions) are arranged on the bottom plate of the casting mould platform 5.3 and are used as a channel for separating the ingot from the casting mould 5.4, and powder is added into the first demoulding holes when the casting mould platform is used, so that the molten iron is prevented from leaking outside and the bottom groove 5.5 is protected; the bottom plate is also provided with a plurality of bolt holes for fixing the casting mould platform 5.3 on the slewing bearing; the connecting plate is in a barrel shape and is used for connecting the flange on the top surface of the casting mould platform 5.3 with the bottom plate, and the rib plate is welded with the barrel wall, the flange and the bottom plate together.
Each first demoulding hole is provided with a casting mould 5.4; the casting mould 5.4 is in a hollow oblate arc upright column shape, the cross section of a cavity of the casting mould is formed by 4 circular arcs R1, R2, R3 and R4 closed loops, the outer wall of the casting mould is also formed by 4 circular arcs R5, R6, R7 and R8 closed loops, the inner wall of the casting mould is smooth, the outer wall of the casting mould is smooth or is provided with heat dissipation plates which are staggered horizontally and vertically, the material of the heat dissipation plates is copper or steel or ductile iron, and the casting mould is arranged at the position of a demoulding hole of the; the casting mould 5.4 is pressed by the top groove 5.2 on the bottom plate of the casting mould platform 5.3 through bolts.
The bottom groove 5.5 is fixedly arranged on the frame 3 through bolts, the top surface of the bottom groove 5.5 is in sliding fit with the bottom plate of the casting mould platform 5.3, a circular groove is arranged on the top surface of the bottom groove 5.5, and a second demoulding hole communicated with the groove is arranged at the bottom of the bottom groove 5.5; the size of the second stripping hole is not smaller than the contour size of an inner hole of the casting mould 5.4, a partition plate is arranged in the groove, and except the position of the second stripping hole, the rest of the groove is filled with a refractory material or alloy powder and graphite powder mixture 6; the mixture 6 of the refractory material or the alloy powder and the graphite powder has the function of ensuring that the molten iron in the casting mould 5.4 does not leak; the graphite powder is used as a lubricant for reducing the rotation resistance of the casting mould platform 5.3, and is used for filling gaps of refractory materials or alloy powder to increase the bulk density and ensure that molten iron cannot penetrate into the refractory materials or the alloy powder; the groove is internally provided with a riding wheel group, the riding wheel group comprises a roller 5.5.4, a first bearing 5.5.3, a first fixed shaft 5.5.1, a bearing gland 5.5.2 and a sealing ring 5.5.5, the bearing gland 5.5.2 is in running fit with the first fixed shaft through balls, the riding wheel group has the functions of keeping powder in the groove in a static state and not running along with the rotation of the casting mould platform 5.3 and assisting the vertical support of the rotary bearing to the casting mould platform 5.3.
Slewing bearing 5.6 sets firmly on frame 3, is provided with on slewing bearing 5.6 and fixes firmly and coaxial driven gear with casting mould platform 5.3, and driven gear and the driving gear 5.7.1 horizontal meshing in the variable speed drive 5.7.
In this embodiment, the speed change driver 5.7 includes an input shaft 5.7.6, a speed change cam 5.7.5, an output shaft 5.7.2, a rotary disc 5.7.3 and a driving gear 5.7.1, the speed change cam 5.7.5 is fixedly arranged on the input shaft 5.7.6, the rotary disc 5.7.3 and the driving gear 5.7.1 are fixedly arranged on the output shaft 5.7.2, the output shaft 5.7.2 is vertical, a plurality of needle bearings 5.7.4 are uniformly arranged on a pitch circle of the rotary disc 5.7.3, the bottom surface of the rotary disc 5.7.3 is slightly higher than the upper edge of a ridge of the speed change cam 5.7.5, and the rotary disc 5.7.3 has a plurality of pin shaft holes for mounting the non-standard needle bearings 5.7.4; the non-standard needle bearing 5.7.4 comprises a pin shaft, a bearing outer ring and a needle roller, wherein one end of the pin shaft is provided with a thread, the other end of the pin shaft is provided with a boss, and the length of the pin shaft is greater than the sum of the length of the bearing outer ring and the thickness of the turntable 5.7.3; the pin shaft is vertically arranged in a pin shaft hole of the rotary table 5.7.3, the thread of the pin shaft is upward and is exposed out of the upper plane of the pin wheel for installing a locking bolt; the outer ring of the needle roller bearing 5.7.4 is in rolling contact with the wheel ridge of the speed change cam 5.7.5, and one end of the input shaft 5.7.6 is in transmission connection with external power. Wherein, the needle bearing 5.7.4 can also be horizontally installed on the outer circle of the turntable 5.7.3.
the speed change cam 5.7.5 is provided with a deformed sinusoidal wheel ridge and a spiral wheel ridge with a constant lead angle, and the deformed sinusoidal wheel ridge coincides with the tangent line of the head-tail point of the spiral wheel ridge. The fast driving angle of the deformed sinusoidal wheel ridge is corresponding to (30-170 degrees), the spiral wheel ridge is corresponding to the slow driving angle (330-190 degrees), and the casting mould platform 5.3 is driven by the deformed sinusoidal wheel ridge to rotate in an accelerating and decelerating way; the casting mould platform 5.3 rotates at a constant speed under the driving of the ridges of the spiral wheel; the speed in the acceleration and deceleration stage is higher than the speed of uniform rotation; for each revolution of the input shaft 5.7.6, the mold platform 5.3 rotates in a "constant speed-acceleration-deceleration" cycle. When a fixed molten iron flow column flowing out of a straight-flow hole of the multi-flow bag 2 is about to contact with a mold wall of a mold 5.4 of a mold platform 5.3 which slowly rotates at a constant speed in the casting process of the casting device, a roller of a rotary table 5.7.3 just moves to the starting point of a deformed sinusoidal wheel ridge of a cam, the mold platform 5.3 is driven by the deformed sinusoidal wheel ridge to rapidly rotate, and the next mold 5.4 is rotated to a casting station; after the transposition is completed, the rollers of the rotary disc 5.7.3 move to the starting point of the spiral line wheel ridge, and the casting mould platform 5.3 slowly rotates at a uniform speed under the driving of the spiral line wheel ridge, so that the liquid has sufficient time to stably fill the mould.
The vertical reciprocating mechanism 5.1 comprises a transmission shaft 5.1.8 connected with the other end of the input shaft 5.7.6 through a cross slide block coupler 5.1.6, the transmission shaft 5.1.8 is coaxial with the input shaft 5.7.6, the transmission shaft 5.1.8 is rotatably arranged in two rolling bearings, the two rolling bearings are arranged on a bearing seat 5.1.7, one end of the transmission shaft 5.1.8, which is far away from the input shaft 5.7.6, is provided with a first inertia wheel, the rim of the first inertia wheel is rotatably connected with one end of a connecting rod 5.1.10, and the other end of the connecting rod 5.1.10 is rotatably connected with a sliding rod 5.1.3; the slide bar 5.1.3 is vertical and is positioned perpendicularly under the effect of two sets of roller groups 5.1.2, the top of slide bar 5.1.3 is linked firmly a horizontal pole 5.1.1, still has linked firmly spring vibrating arm 5.1.4 and sprayer spray tube 5.1.5 on the horizontal pole 5.1.1, and spring vibrating arm 5.1.4 and sprayer spray tube 5.1.5 are also positioned perpendicularly by two sets of roller groups 5.1.2 respectively. The bottom end of the spray pipe is provided with an atomizing nozzle, and the inertia wheel drives the vertical reciprocating motion mechanism 5.1 to do linear motion up and down once through the connecting rod when the driver input shaft 5.7.6 rotates for one circle. The height positions of a spring vibrating rod 5.1.4 and a spray pipe in the vertical reciprocating mechanism 5.1 are right above a casting mould 5.4 of a demoulding and spraying station; the cast casting mould 5.4 is horizontally rotated by 180-355 degrees to reach the demoulding station. When the casting mould 5.4 rotates to the demoulding station, because the bottom groove 5.5 at the position is the second demoulding hole, most of cast ingots automatically fall off through the second demoulding hole under the action of gravity, and a small part of cast ingots abnormally fall off from the casting mould 5.4 under the rapping of the spring vibrating rod 5.1.4 which vertically and linearly moves up and down along with the cross rod 5.1.1. The spray pipe which is parallel to the spring vibrating rod 5.1.4 also moves vertically and linearly along with the cross rod 5.1.1, and the coating is sprayed on the surface of the inner die wall of the casting die 5.4. Because the input shaft 5.7.6 drives the vertical reciprocating mechanism 5.1 to do linear motion up and down once and the mould platform 5.3 to rotate one mould position once per rotation, the spraying pipe and the spring vibrating rod 5.1.4 never interfere with the mould platform 5.3.
the embodiment also provides an alloy molten iron granulating system, which comprises a multi-flow bag 2, a granulating machine, a screening machine, a powder making machine, a lifting machine, a powder adding device 4 and the vertical casting machine 5, wherein the multi-flow bag 2 is arranged above a top groove 5.2 of the vertical casting machine 5, a gap of 0-300mm is formed between the multi-flow bag 2 and the top groove 5.2, a plurality of vertical direct-flow holes are formed in the bottom surface of the multi-flow bag 2, the axes of the direct-flow holes and a casting mold 5.4 are coaxial, the distance between every two adjacent direct-flow holes is equal to the distance between every two adjacent mold positions on a casting mold platform 5.3 corresponding to all the positions of the direct-flow holes, the multi-flow bag 2 is used for distributing molten iron to the plurality of casting molds 5.4 at the same time and preventing the molten iron from splashing loss when the molten iron is poured out.
The vertical casting machine 5, the granulating machine, the screening machine, the flour making machine, the lifting machine and the flour adding device 4 are sequentially connected, and the flour adding device 4 is arranged above the vertical casting machine 5.
The granulator is composed of a motor 6.1, a speed reducer 6.2, a second inertia wheel 6.3, an indentation roller 6.5 and a granulator frame 6.4. The motor 6.1 and the speed reducer 6.2 are standard parts, and the granulator frame 6.4 is formed by welding or casting steel or section steel; the indentation roller 6.5 consists of a driving roller and a driven roller, is processed by alloy steel or carbon steel, and is welded with convex nails by a hardfacing electrode in the longitudinal and transverse directions of the surface of a roller skin, wherein the height of the convex nails is 0.5-50 mm, and the distance between the convex nails is 10-300 mm; the distance between the roll surfaces of the two indentation rolls is adjustable, and the minimum distance between the roll surfaces of the two indentation rolls is 1-50mm smaller than the thickness of the cast ingot; the second inertia wheel 6.3 is made of cast steel or cast iron, the purpose of which is to increase the rotational smoothness of the granulator. The screening machine is arranged on the bottom surface of the granulator, and power is directly provided by a driving shaft or a driven shaft of the screening machine. The alloy pressed by the granulator directly falls into a screening machine for screening, oversize materials enter a finished product bin, and undersize materials enter a powder return device.
Powder returning device: comprises a flour mill and a lifter. Undersize from the screening machine (which does not meet the technical requirements of bed charge laying because of too large granularity) is directly slid to a pulverizer to be pulverized, and the pulverized undersize is lifted to a high-level powder feeder 4 by a lifter for use. The cornmill comprises a motor, a speed reducer, a frame, a driving roller and a driven roller, wherein the driving roller and the driven roller are smooth alloy rollers, and the roller surface distance of the driving roller and the driven roller is 0-3 mm.
The alloy molten iron granulation system further comprises two liquid level detectors 1, wherein one liquid level detector 1 is arranged right above the multi-flow bag 2, the other liquid level detector 1 is arranged beside the multi-flow bag 2, and the two liquid level detectors 1 are both blue-ray laser liquid level detectors; and judging whether to continue to inject molten iron into the multi-flow ladle 2 or not according to signals of the two liquid level detectors 1, outputting an electric signal when detecting that the height of the metal liquid level reaches a set schedule, and stopping a hoisting motor of an auxiliary hook of the casting crane for 1-30 seconds.
The powder feeder 4 comprises a storage bin and a feeder, an overflow chute at the upper part of the storage bin extends into the multi-flow bag 2, a gate valve is arranged at the bottom of the storage bin, and the feeder is arranged at the bottom of the storage bin; the powder feeder 4 is installed above the upper plane of the casting mould platform 5.3 and lags behind the spraying station by 1-30 mould positions, the storage bin is made of steel plates, the mould cavity is in an inverted cone shape or an inverted trapezoid shape, the upper part of the storage bin is provided with a powder overflow chute, the lower part of the storage bin is provided with a manual gate valve, and the bottom of the storage bin is provided with a feeder. The powder feeder 4 has the primary function of quantitatively laying a layer of powder consistent with the material of the cast alloy on the upper plane of the bottom groove 5.5 at the lower part of the casting mould 5.4, wherein the thickness of the powder layer is 1-200mm (the powder is used for preventing molten iron from leaking from the bottom and protecting the inner wall of the bottom of the casting mould 5.4); secondly, the rest powder materials spread at the bottom are distributed into the multi-flow bag 2, and after the powder material bin is full, the powder materials on the top directly flow into the multi-flow bag 2 through a chute to be mixed with molten iron and melted.
The alloy molten iron granulation system of the embodiment is used as follows:
After the power supply is switched on, the motor drives the speed reducer, the output shaft 5.7.2 of the speed reducer drives the input shaft 5.7.6 of the speed change cam 5.7.5 driver, on one hand, the input shaft 5.7.6 drives the vertical reciprocating motion mechanism 5.1 to do vertical reciprocating linear motion through the inertia wheel, on the other hand, the speed change cam 5.7.5 drives the needle bearing 5.7.4-the turntable 5.7.3-the output shaft 5.7.2-the driving gear 5.7.1-the slewing bearing (the gear) to drive the casting mould platform 5.3 to do periodic horizontal slewing motion of 'uniform speed-acceleration-deceleration-uniform speed'. The operation sequence of each device is as follows:
(1) before starting up and casting, firstly filling a groove of a bottom groove with a refractory material or an alloy powder and graphite mixture, secondly respectively filling a coating tank and a powder bin with a spray coating and alloy powder, and opening a related manual valve of the sprayer and a manual gate valve at the lower part of a powder feeder 4;
(2) Starting the vertical casting machine 5, and automatically and quantitatively laying sealing powder and coating on the inner wall of the casting mold 5.4 at the bottom of the cavity of the casting mold 5.4 by the powder feeder 4 and the sprayer respectively;
(3) Starting a crane auxiliary hook winch to slowly pour molten iron into the multi-flow bag 2;
(4) Molten iron flows out from a plurality of vertical direct current holes at the bottom of the multi-flow pack 2 at the same time, passes through the vertical through holes on the bottom plate of the top groove 5.2, and is stably, uniformly and continuously injected into the cavities of a plurality of casting molds 5.4 at the same time;
(5) When the liquid level detector 1 detects that the metal liquid level reaches a set height, the detector outputs an electric signal, and the auxiliary hook hoisting motor stops for 1-30 seconds;
(6) demolding: when the cast casting mold 5.4 rotates 180-355 degrees, the casting mold reaches a demolding mold position, the cast ingots are completely solidified and cooled to 600-1300 ℃, most of the cast ingots are separated from the casting mold 5.4 through a second demolding hole of the bottom groove 5.5 under the action of gravity, and a small amount of abnormal cast ingots are demolded under the vibration of a spring vibration rod 5.1.4;
(7) spraying a material: after demoulding, a spray pipe of the vertical linear reciprocating motion mechanism sprays paint on the surface of the mould wall of a cavity 5.4 of the casting mould;
(8) Laying base powder: the sprayed casting mould 5.4 continues to rotate forwards to the station of the powder adding device 4, and the powder adding device 4 quantitatively adds powder to the bottom of the cavity of the casting mould 5.4;
(9) the casting mould 5.4 enters the next working cycle again;
(10) Granulating: the ingot after demoulding is immediately sent to a granulator for granulation in an on-line red way.
(11) screening: the granularity of the alloy after granulation is in the range of 0-60mm, and the alloy which meets and does not meet the requirement of a user is separated by a screening machine.
(12) Loading and treating powder: directly loading oversize materials into a hopper and storing, crushing undersize materials into 0-3mm fine powder on line, and conveying the fine powder into a bin of a feeder through a material returning system.
the embodiment also provides an molten alloy iron granulating method based on the molten alloy iron granulating system, which comprises the following steps:
continuously casting molten iron into a circular arc flat ingot with the thickness of 30-200mm, the width of the ingot of 50-1000mm and the length of the ingot of 300-2000mm on a vertical casting machine 5 which circularly and horizontally rotates at a constant speed, demoulding the ingot at the temperature of 600-1300 ℃, then conveying the ingot to a granulator for continuous crushing into 0-60mm granular alloy, sieving the granular alloy by a sieving machine, crushing the sieved substances on line directly by a double-roller powder mill, lifting the crushed substances to a powder feeder 4 by a lifter, feeding the crushed substances to the bottom of a casting mold 5.4 of the vertical casting machine 5 as a bottom paving material or a multi-flow bag 2 for remelting, and loading the sieved substances into a warehouse in an off-line manner.
Example two
as shown in fig. 10 to 12, the present embodiment provides a vertical casting machine, molten alloy iron granulation system and method, which are different from the vertical casting machine, molten alloy iron granulation system and method of the first embodiment only in the following points:
(1) The variable speed driver 5.7 in the vertical casting machine 5 comprises a worm, a turbine, an output shaft 5.7.2 and a driving gear 5.7.1, wherein the turbine and the driving gear 5.7.1 are fixedly arranged on the output shaft 5.7.2, the output shaft 5.7.2 is vertical, the turbine is meshed with the worm, one end of the worm is connected with an output shaft of a speed reducer, and an input shaft of the speed reducer is connected with the output shaft 5.7.2 of a servo motor. The vertical reciprocating mechanism 5.1 comprises a crankshaft connected with the other end of the worm through an Oldham coupling 5.1.6, the crankshaft is coaxial with the worm, one end of the crankshaft far away from the input shaft 5.7.6 is connected with one end of a connecting rod, and the other end of the connecting rod is connected with a sliding bearing; the sliding bearing is fixedly connected with a cross rod 5.1.1, the cross rod 5.1.1 is also fixedly connected with a spring vibrating rod 5.1.4 and a sprayer spray pipe 5.1.5, and the spring vibrating rod 5.1.4 and the sprayer spray pipe 5.1.5 are respectively vertically positioned by two groups of roller groups 5.1.2.
(2) In the using process, the casting crane is changed into a servo motor for directly driving the casting device to cast molten iron; the height of the upper plane of the molten iron ladle on the casting device is higher than that of the upper plane of the multi-flow ladle 2; the casting device comprises a frame, a speed reducer and a servo motor, and the installation position of the casting device is the same as the direction of the axis of the multi-flow bag 2. The casting device has the function of supplying molten iron to the multi-flow ladle 2 at a constant speed (quantitative); the speed control method comprises the following steps: the rotating shaft of the frame is directly driven by the servo motor reducer set to rotate at the speed of 0.25-2 revolutions per hour, and the rotating speeds in different time periods are determined by calculating the volume of the molten iron liquid level unit height in the ladle at different angles through integration, so that the quantity of the poured molten iron is basically consistent every second. A molten iron liquid level laser measuring instrument (which can use ultrasonic waves, an electrode probe and the like) is arranged right above the casting mould platform 5.3, and when the measured liquid level is equal to the set height, the servo motor is stopped for 1-10 seconds, so that the molten iron is ensured not to overflow the casting mould 5.4 to cause accidents.
(3) The pivoting support 5.6 is replaced by a pin wheel 5.11 and a roller support 5.12, and the pin wheel 5.11 is composed of a panel 5.11.1, a cylindrical pin 5.11.2, a connecting plate 5.11.3, a bottom plate 5.11.4 and a rib plate 5.11.5. A plurality of cylindrical pin holes phi 6 are uniformly drilled in the pitch circles phi 4 of the panel 5.11.1 and the bottom plate 5.11.4, and the cylindrical pins 5.11.2 are installed in the phi 6 holes. The periphery of phi 2 of the upper rim is provided with a plurality of through holes phi 8 for fixing the mould platform 5.3 on the pin wheel 5.11. The bottom surface of the lower wheel rim is an inclined plane or a plane, and the bottom surface and the excircle are respectively processed into a smooth plane and a smooth circumference which are used as the positioning reference of the height and the circle center of the pin wheel 5.11. The roller support 5.12 comprises a support frame 5.12.1, a second fixed shaft 5.12.3, a second bearing 5.12.5, a gland 5.12.4 and a roller 5.12.2. The roller supports 5.12 are provided in at least 3 groups and are mounted below the bottom panel 5.11.4 of the peg wheel 5.11 in rolling contact with the bottom plane of the bottom panel 5.11.4 of the peg wheel 5.11.
(4) Only one liquid level detector 1 is arranged in the molten alloy iron granulating system and is positioned beside the multi-flow bag 2.
(5) the double-roller pulverizer is changed into a hammer pulverizer or a ball mill.
In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention; the term "hot metal" refers broadly to a high temperature liquid alloy being cast and is not to be understood as either a steel making hot metal or a cast iron hot metal. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
the principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (11)
1. A vertical casting machine is characterized in that: comprises a frame, a top groove, a casting mould platform, a casting mould, a bottom groove, a rotating supporting part and a variable speed driver; the top groove is fixedly arranged at the top end of the casting mould platform, the top groove is an annular groove body, and a bottom plate of the top groove is provided with a plurality of vertical through holes which are in one-to-one correspondence with mould positions on the casting mould platform; the casting mould platform comprises a top flange, a connecting plate and a bottom plate which are sequentially connected, a plurality of first demoulding holes which are in one-to-one correspondence with mould positions on the casting mould platform are formed in the bottom plate of the casting mould platform, a casting mould is arranged on each first demoulding hole, and the casting mould is clamped between the top groove and the bottom plate of the casting mould platform;
The bottom groove is fixedly arranged on the rack, the top surface of the bottom groove is in sliding fit with the bottom plate of the casting mold platform, an annular groove is formed in the top surface of the bottom groove, and a second demolding hole communicated with the groove is formed in the bottom of the bottom groove; the casting mould platform is rotationally connected with the rack through the rotating support part, and the variable speed driver can drive the casting mould platform to rotate.
2. The vertical caster of claim 1, wherein: the speed change driver comprises an input shaft, a speed change cam, an output shaft, a rotary disc and a driving gear, the speed change cam is fixedly arranged on the input shaft, the rotary disc and the driving gear are fixedly arranged on the output shaft, the output shaft is vertical, a plurality of needle roller bearings are uniformly distributed on the rotary disc, the distance from each needle roller bearing to the center of the rotary disc is equal, the outer rings of the needle roller bearings are in rolling contact with the ridges of the speed change cam, and one end of the input shaft is in transmission connection with external power; the variable speed cam is provided with a deformed sinusoidal wheel ridge and a spiral wheel ridge with a constant lead angle, and the deformed sinusoidal wheel ridge is superposed with the tangent line of the head-tail point of the spiral wheel ridge.
3. The vertical caster of claim 1, wherein: the variable speed driver comprises a worm, a turbine, an output shaft and a driving gear, wherein the turbine and the driving gear are fixedly arranged on the output shaft, the output shaft is vertical, the turbine is meshed with the worm, one end of the worm is connected with the output shaft of the speed reducer, and the input shaft of the speed reducer is connected with the output shaft of the servo motor.
4. The vertical caster of claim 1, wherein: the spraying device is characterized by further comprising a vertical reciprocating mechanism, wherein the vertical reciprocating mechanism comprises a horizontal transmission shaft driven by an input shaft of the variable speed driver and a bearing system supporting the horizontal transmission shaft to rotate and position, a vertical sliding rod driven by the horizontal transmission shaft, a cross rod driven by the vertical sliding rod and arranged at the top of the vertical sliding rod, and a spring vibrating rod and a sprayer spray pipe are fixedly connected onto the cross rod; the vertical sliding rod is vertically positioned under the action of the two groups of roller groups, and the spring vibrating rod and the sprayer spray pipe are respectively and vertically positioned by the positioning mechanism.
5. the vertical caster of claim 1, wherein: the rotating support part is a slewing bearing, a driven gear which is fixedly connected with the casting mould platform and is coaxial with the casting mould platform is arranged on the slewing bearing, and the driven gear is horizontally meshed with a driving gear in the variable speed driver.
6. the vertical caster of claim 1, wherein: the rotating support part comprises a pin wheel and at least three roller supports, and the casting mould platform is fixedly connected with the pin wheel; the roller is supported and fixed on the bracket; the bottom surface of the pinwheel is in rolling contact with the roller supported by the roller.
7. the vertical caster of claim 1, wherein: the casting mold is in a hollow oblate arc vertical column shape, a hollow rectangular vertical column shape, a hollow circular vertical column shape, a hollow elliptic vertical column shape or a hollow polygonal vertical column shape; a partition plate, a riding wheel group and powder are arranged in the groove of the bottom groove, and the riding wheel group is in rolling contact with the bottom surface of the bottom plate of the vertical casting machine platform; the shapes of the cross section of the vertical through hole, the cross section of the first demolding hole and the cross section of the second demolding hole are matched with the shape of the cross section of the ingot.
8. An alloy molten iron granulation system is characterized in that: the vertical casting machine comprises a multi-flow bag, a granulating machine, a screening machine, a flour mill, a lifting machine, a flour feeder and the vertical casting machine as claimed in any one of claims 1 to 7, wherein the multi-flow bag is arranged above a top groove of the vertical casting machine, a space is arranged between the multi-flow bag and the top groove, a plurality of vertical straight-flow holes are arranged on the bottom surface of the multi-flow bag, the straight-flow holes can be coaxial with a casting mold, and the distance between two adjacent straight-flow holes is equal to the distance between two adjacent mold positions on a casting mold platform; perpendicular casting machine the granulator divide the screen (ing) machine the cornmill the lifting machine reaches the powder feeder links to each other in proper order, the powder feeder set up in the top of perpendicular casting machine, the powder feeder includes storage silo and feeder, the overflow chute on storage silo upper portion stretches into many streams package, the bottom of storage silo is provided with the push-pull valve, the feeder set up in the bottom of storage silo.
9. The molten alloy iron granulation system of claim 8, wherein: the multi-flow ladle casting device further comprises a liquid level detector used for detecting the liquid level of the molten iron in the multi-flow ladle or the casting mould, and whether the molten iron is increased or reduced or stopped being injected into the multi-flow ladle is judged according to the signal of the liquid level detector.
10. the molten alloy iron granulation system of claim 8, wherein: the granulator comprises a motor, a speed reducer, a driving roller, a driven roller and a granulator frame, wherein a shaft of the motor drives an input shaft of the speed reducer, an output shaft of the speed reducer drives the driving roller to rotate, the driving roller and the driven roller are both rotatably arranged on the granulator frame, and the minimum distance between the roller surface of the driving roller and the roller surface of the driven roller is 1-50mm smaller than the thickness of the cast ingot.
11. The method for granulating the molten alloy iron is characterized by comprising the following steps of: sealing the bottom of the casting mold by using powder, and continuously casting molten iron into an ingot on a vertical casting machine which circularly and horizontally rotates; demoulding the cast ingot at the temperature of 600-1300 ℃, directly conveying the cast ingot to a granulator on line after demoulding, and continuously crushing the cast ingot into granular alloy; conveying the granular alloy to a screening machine on line for screening; directly crushing the undersize materials into powder on line through a flour mill; the powder is sent to a powder feeder on line and then enters the bottom of a casting mold cavity of a vertical casting machine to be used as a bottom laying sealing material or a multi-flow bag to be remelted; and (5) loading the oversize materials into a bucket in an off-line mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910898506.1A CN110560647A (en) | 2019-09-23 | 2019-09-23 | Vertical casting machine, and molten alloy iron granulating system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910898506.1A CN110560647A (en) | 2019-09-23 | 2019-09-23 | Vertical casting machine, and molten alloy iron granulating system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114905031A (en) * | 2022-05-27 | 2022-08-16 | 石嘴山市仟一机械制造有限公司 | Automatic production system for rare earth alloy |
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