A molten steel slag pretreatment device

Abstract

The present invention relates to a molten steel slag pretreatment device, belonging to the technical field of steel slag treatment. The molten steel slag pretreatment device comprises a slag bed, a rake car and a dust removal car; the rake car comprises a car body, a rake and a first running device, the first running device is connected to the car body, the rake is connected to the car body and the rake is located above the slag bed, the dust removal car comprises a dust removal hood, a sprayer and a second running device, the second running device is connected to the dust removal hood, and the sprayer is arranged in the dust removal hood. When the slag tank car dumps the molten steel slag onto the slag bed, the dust removal car moves to the dumping position of the slag tank car, and the dust removal hood collects the dust generated in the process of the slag tank car dumping the molten steel slag, and when the rake car crushes the molten steel slag, the dust removal car moves to the position of the rake car, and the dust removal hood collects the smoke and dust generated in the process of the rake car crushing the molten steel slag and the sprayer cooling the molten steel slag. After the rake car divides the molten steel slag, it can increase the surface area of ​​the molten steel slag and improve the efficiency of processing the molten steel slag into small slag blocks.

Description

Technical Field

[0001] The invention belongs to the technical field of steel slag treatment, and in particular relates to a molten steel slag pretreatment device. Background Art

[0002] When recycling molten steel slag, it is usually dumped into a slag bed through a slag tank truck, and then processed into block slag with a particle size that meets certain requirements through a pre-treatment device, and then water is pumped, heated, and digested. The digested slag is then crushed, screened, and magnetically separated.

[0003] At present, the pretreatment processes of molten steel slag include water quenching, air quenching, mechanical crushing, hot pouring, hot stuffing, etc. However, these processes all have the problem of long cycle and low efficiency in processing molten steel slag into slag blocks. In addition, smoke and dust will be generated when the slag tank truck dumps the molten steel slag and processes the molten steel slag into slag blocks. The current pretreatment device can only effectively remove dust in the process of processing the molten steel slag into slag blocks, and cannot effectively remove dust from both the places where smoke and dust are generated, that is, when the slag tank truck dumps the molten steel slag and processes the molten steel slag into slag blocks. Summary of the invention

[0004] In view of this, the purpose of the present invention is to overcome the deficiencies of the prior art and provide a pretreatment device for molten steel slag to solve the technical problems of poor dust removal effect of the pretreatment device in the prior art and low treatment efficiency of the molten steel slag.

[0005] The present invention is achieved through the following technical solutions:

[0006] A molten steel slag pretreatment device, comprising:

[0007] A slag bed, wherein molten steel slag is carried on a bed surface of the slag bed, and the slag bed has a length direction and a width direction;

[0008] A rake vehicle, the rake vehicle comprising a vehicle body, a rake and a first traveling device, the rake being arranged above the slag bed along the width direction of the slag bed, the first traveling device being connected to the vehicle body and driving the rake to move along the length direction of the slag bed; and,

[0009] A dust removal vehicle, comprising a dust removal hood, a sprayer and a second walking device, wherein the second walking device is connected to the dust removal hood and is configured to move the dust removal hood along the length direction of the slag bed, the sprayer being arranged in the dust removal hood; and entrances and exits for avoiding the slag bed and the rake vehicle are provided at opposite ends of the dust removal hood.

[0010] Optionally, in order to better implement the present invention, the rake includes a first crossbeam and a plurality of rake teeth connected to the first crossbeam, and the plurality of rake teeth are arranged at intervals and face the slag bed.

[0011] Optionally, in order to better realize the present invention, the rake teeth include first rake teeth and second rake teeth, a plurality of the first rake teeth are arranged at intervals along the length direction of the first beam to form at least one row of first rake tooth units, a plurality of the second rake teeth are arranged at intervals along the length direction of the first beam to form at least one row of second rake tooth units, the first rake tooth units and the second rake tooth units are alternately arranged along the length direction of the slag bed, and the first rake teeth are opposite to the gap between the two adjacent second rake teeth.

[0012] Optionally, in order to better implement the present invention, the projection of the first rake tooth on the slag bed has a first angle with the length direction of the slag bed, the projection of the second rake tooth on the slag bed has a second angle with the length direction of the slag bed, 0°<the first angle<90°, 90°<the second angle<180°.

[0013] Optionally, in order to better implement the present invention, a first slide groove is provided on the vehicle body, the bottom of the first slide groove is close to the slag bed, the top of the first slide groove is away from the slag bed, the first crossbeam is slidably installed in the first slide groove, and the rake teeth are provided with a first inclined surface facing the slag receiving port for avoiding large slag lumps.

[0014] Optionally, in order to better implement the present invention, a side wall of the first sliding groove is a second inclined surface, and the inclination direction of the second inclined surface is opposite to the inclination direction of the first inclined surface.

[0015] Optionally, in order to better implement the present invention, the rake truck also includes a slag pushing plate and a lifting device, one end of the lifting device is fixed to the vehicle body, and the other end of the lifting device is connected to the slag pushing plate to drive the slag pushing plate close to or away from the slag bed, and a slag receiving port is provided at one end of the slag bed in the length direction.

[0016] As an option, in order to better realize the present invention, the slag pushing plate includes a second cross beam and a push plate connected to the second cross beam, the push plate faces the slag bed, and the slag pushing plate is provided with bending portions at both ends of the slag bed in the width direction, the bending direction of the bending portion is along the length direction of the slag bed toward the slag receiving port, the bending angle of the bending portion is less than 90°, and the length of the push plate in the width direction of the slag bed is adapted to the width of the slag bed.

[0017] Optionally, in order to better realize the present invention, the first walking device and the second walking device have the same structure, both including walking wheels and walking tracks, the walking wheels cooperate with the walking tracks, the walking tracks are parallel to the length direction of the slag bed, the walking wheels in the first walking device are connected to the vehicle body, and the walking wheels in the second walking device are connected to the dust hood.

[0018] Optionally, in order to better implement the present invention, the sprayer includes a spray pipe and a plurality of nozzles connected to the spray pipe, the plurality of nozzles are arranged at intervals along the width direction of the slag bed, and the dust collector is arranged on the top of the dust hood.

[0019] As an option, in order to better implement the present invention,.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention provides a slag bed, a rake car and a dust removal car. The rake car and the dust removal car can move along the length direction of the slag bed. The dust removal car can be respectively / simultaneously covered outside the slag bed and the rake car through an inlet and outlet arranged on a dust removal cover. When the slag tank truck is dumping molten steel slag, the dust removal truck can move to the dumping position of the slag tank truck and move synchronously with the dumping direction of the slag tank truck, and cover the molten steel slag dumped by the slag tank truck through the dust removal hood to reduce the pollution to the environment caused by the dust generated when the slag tank truck dumps the molten steel slag. After the slag tank truck has finished dumping, the rake truck enters the dust removal hood of the dust removal truck through the first walking device, and the rake truck and the dust removal truck move synchronously. During the process of the rake of the rake truck dividing the molten steel slag, the sprayer is turned on, and the molten steel slag divided by the rake is sprayed and cooled at the same time, so that the molten steel slag is quickly cooled and broken into small slag blocks that meet the particle size requirements. The smoke and dust generated in the process of spraying the molten steel slag to cool down and in the process of the rake crushing the molten steel slag are collected and processed through the dust removal hood, thereby reducing the pollution to the environment caused by the smoke and dust generated in the process of spraying the molten steel slag to cool down and in the process of the rake crushing the molten steel slag. At the same time, since the rake truck divides the molten steel slag and the sprayer sprays and cools the divided molten steel slag at the same time, the reflux of the molten steel slag after separation can be avoided, and the molten steel slag after division can have a larger contact area with the cooling liquid sprayed by the sprayer, thereby further improving the efficiency of processing small slag blocks of molten steel slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0024] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle rake car and slag bed;

[0025] Figure 3 yes Figure 2 A top view of the medium rake truck;

[0026] Figure 4 yes Figure 2 Schematic diagram of the structure of the middle rake;

[0027] Figure 5 yes Figure 2 Schematic diagram of the structure of the middle rake teeth and push plate;

[0028] Figure 6 yes Figure 2 Side view of

[0029] Figure 7 yes Figure 6 Schematic diagram of the internal structure;

[0030] Figure 8 yes Figure 7 A partial enlarged view of .

[0031] Reference numerals:

[0032] 100-slag bed; 110-slag receiving port; 120-slag bed surface;

[0033] 200-rake car; 210-car body; 2101-first chute; 2102-second chute; 2103-second inclined plane; 220-rake; 221-first crossbeam; 2211-baffle; 222-rake teeth; 2221-first rake teeth; 2222-second rake teeth; 2223-first inclined plane; 223-buffer pad; 230-slag pusher plate; 231-second crossbeam; 232-push plate; 2321-bending part; 233-rib plate; 240-lifting device; 241-hydraulic system; 250-first walking device; 2501-walking track; 2502-walking wheel;

[0034] 300 - dust removal vehicle; 310 - dust removal hood; 320 - sprayer; 3201 - spray head; 3202 - spray pipe; 330 - second walking device. DETAILED DESCRIPTION

[0035] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0036] Embodiment 1:

[0037] like Figures 1 to 8 As shown, a molten steel slag pretreatment device includes: a slag bed 100, a rake vehicle 200 and a dust removal vehicle 300, wherein:

[0038] like Figure 1 As shown, the slag bed 100 is used to carry molten steel slag, and the molten steel slag carried on the slag bed surface 120 is transported by a slag tank truck and poured and laid on the slag bed surface 120. The slag bed 100 has a length direction and a width direction perpendicular to the length direction, and a slag receiving port 110 is provided at one end of the slag bed 100 in the length direction.

[0039] like Figures 1 to 8 As shown, the rake vehicle 200 includes a vehicle body 210, a rake 220 and a first walking device 250, wherein:

[0040] like Figure 1 As shown, the vehicle body 210 is a gantry structure, the middle part of the vehicle body 210 is erected above the slag bed 100, and the two ends of the vehicle body 210 are erected on both sides of the length direction of the slag bed 100. The first walking device 250 includes walking wheels 2502 and walking tracks 2501. The two walking tracks 2501 are respectively arranged on both sides of the slag bed 100 along the length direction of the slag bed 100, that is, a walking track 2501 is provided on each side of the slag bed 100, and the walking track 2501 is parallel to the length direction of the slag bed 100.

[0041] like Figure 6 and Figure 7As shown, each traveling track 2501 is provided with at least two traveling wheels 2502 matched with the traveling track 2501, and the traveling wheels 2502 of the first traveling device 250 are rotatably connected to the lower ends of both ends of the vehicle body 210, thereby driving the vehicle body 210 to move along the traveling tracks 2501. Of course, the vehicle body 210 can also be a cantilevered structure, and the two traveling tracks 2501 of the first traveling device 250 are arranged on the same side of the length direction of the slag bed 100, and the cantilevering direction of the vehicle body 210 extends in the width direction of the slag bed.

[0042] like Figures 1 to 3 As shown, the rake 220 is arranged above the slag bed 100 along the width direction of the slag bed 100 and connected to the vehicle body 210. Specifically, the rake 220 includes a first crossbeam 221 and a plurality of rake teeth 222. Both ends of the first crossbeam 221 are connected to the vehicle body 210, so that the middle of the first crossbeam 221 is above the slag bed 100 and there is a gap between the first crossbeam 221 and the slag bed 100. The rake teeth 222 are long strip structures, and a plurality of rake teeth 222 are arranged in the gap between the first crossbeam 221 and the slag bed 100, and one end of the rake teeth 222 is detachably connected to the first crossbeam 221 by bolts, so that the severely worn rake teeth 222 can be replaced separately to reduce the replacement cost; the other end of the rake teeth 222 faces the slag bed 100 and is as close to the slag bed surface 120 as possible without scratching the slag bed surface 120, and a plurality of rake teeth 222 are arranged at intervals along the width direction of the slag bed 100 to divide and crush the molten steel slag, and the number of rake teeth 222 and the spacing between the plurality of rake teeth 222 are set accordingly according to the width of the slag bed 100 and the particle size required to be achieved after the molten steel slag is crushed. Preferably, the length of the rake teeth 222 is equal to the spacing between the first crossbeam 221 and the slag bed surface 120, and the rake teeth 222 are perpendicular to the slag bed surface 120. Driven by the first walking device 250 , the rake teeth 222 can cut and separate the molten steel slag laid on the slag bed 100 .

[0043] It should be noted that, in addition to being detachably connected to the first cross beam 221 by bolts, the rake teeth 222 can also be detachably connected to the first cross beam 221 by a snap structure or other locking structure. Of course, when necessary, the rake teeth 222 can also be directly welded to the first cross beam 221 by welding. The rake teeth 222 are made of alloy steel with wear resistance.

[0044] like Figure 1As shown, the dust removal vehicle 300 includes a dust removal hood 310, a sprayer 320, a dust collector 330 and a second travel device 330, wherein an entrance and exit for avoiding the slag bed 100 and the rake vehicle 200 is opened on the side wall of the dust removal hood 310, and the entrance and exit penetrate the opposite side walls of the dust removal hood 310 and communicate with the internal cavity of the dust removal hood 310; the second travel device 330 is connected to the dust removal hood 310, and is used to drive the dust removal hood 310 to move. In this embodiment, the second travel device 330 has the same structure as the first travel device 250, and also includes travel wheels 2502 and travel tracks 2501. The two travel tracks 2501 of the second travel device 330 are arranged on both sides of the slag bed 100 along the length direction of the slag bed 100, that is, a travel track 2501 of the second travel device 330 is arranged on each side of the slag bed 100. Furthermore, the distance between the second traveling device 330 and the slag bed 100 is greater than the distance between the first traveling device 250 and the slag bed 100. Specifically, taking the traveling track 2501 on one side of the length direction of the slag bed 100 as an example, the distance between the traveling track 2501 in the second traveling device 330 and the slag bed 100 is greater than the distance between the traveling track 2501 in the first traveling device 250 and the slag bed 100, so that the rake vehicle 200 can enter the dust removal vehicle 300 during the movement. The traveling track 2501 is parallel to the length direction of the slag bed 100. The traveling wheel 2502 in the second traveling device 330 is rotatably connected to the lower end of the dust removal hood 310, thereby driving the dust removal hood 310 to move along the traveling track 2501 in the second traveling device 330, so that the dust removal hood 310 can be moved to any position on the slag bed 100 where dust removal is required. The sprayer 320 is arranged in the dust hood 310 and fixed to the dust hood 310. The sprayer 320 includes a spray pipe 3202 and a plurality of spray heads 3201 arranged on the spray pipe 3202 and connected to the spray pipe 3202. The spray pipe 3202 is connected to an external cooling water source. The cooling water sprayed by the spray heads 3201 can cool the molten slag. The top of the dust hood 310 is connected to an external dust removal device through a dust removal pipeline to collect and discharge the smoke and dust inside the dust hood 310. The pipeline here is a hose.

[0045] When the slag tank truck dumps and lays the molten steel slag on the slag bed 100, the dust removal truck 300 can move to the dumping position where the slag tank truck is located, and move synchronously with the dumping direction of the slag tank truck along the length direction of the slag bed 100, and cover the molten steel slag dumped by the slag tank truck through the dust removal cover 310, collect the dust generated when dumping the molten steel slag, and enter the external dust removal equipment through the pipeline to reduce the dust pollution to the environment generated when the slag tank truck dumps the molten steel slag. After the slag tank truck is dumped, the rake truck 200 enters the dust removal cover 310 of the dust removal truck 300 through the first walking device 250, and the rake truck 200 moves synchronously with the dust removal truck 300. Since the molten steel slag has fluidity, the sprayer 320 is turned on during the process of the rake teeth 222 of the rake vehicle 200 dividing the molten steel slag, and the nozzle 3201 sprays the cooling liquid to immediately spray and cool the molten steel slag after the rake 222 divides it, so that the molten steel slag after the division is quickly cooled and broken into small slag blocks that meet the particle size requirements and no longer flows. The smoke and dust generated during the process of the nozzle 3201 spraying the molten steel slag to cool it and the process of the rake 222 crushing the molten steel slag are collected by the dust hood 310 and enter the external dust removal equipment through the pipeline, thereby reducing the pollution of the environment by the smoke and dust generated during the process of spraying the molten steel slag to cool it and the process of the rake 222 crushing the molten steel slag. At the same time, since the rake truck 200 divides the molten steel slag and the sprayer 320 sprays and cools the divided molten steel slag at the same time, the reflux of the molten steel slag after separation can be avoided, and the molten steel slag after division can have a larger contact area with the cooling liquid sprayed by the sprayer 320, thereby further improving the efficiency of processing small slag blocks of molten steel slag.

[0046] After the molten steel slag is processed into small slag blocks, the small slag blocks on the slag bed 100 need to be transported to other equipment for the next step of processing. In the prior art, the small slag blocks are mostly transported by special forklifts or transport vehicles. It takes a lot of time for the forklifts or transport vehicles to transport the small slag blocks back and forth. During this period, the pretreatment device cannot process new molten steel slag. In this regard, in this embodiment, a slag receiving port 100 is set at one end of the length direction of the slag bed 100, one end of the slag receiving port 100 is connected to the slag bed surface 120, and the other end of the slag receiving port 100 is connected to other downstream equipment or connected to the ground. A slag pushing plate 230 for pushing the small slag blocks on the slag bed 100 into the slag receiving port 120 and a lifting device 240 for driving the slag pushing plate 230 to move are also set on the rake 200. One end of the lifting device 240 is fixedly mounted on the vehicle body 210 , and the other end of the lifting device 240 is fixedly connected to the slag pushing plate 230 to drive the slag pushing plate 230 to move toward the slag bed 100 or to drive the slag pushing plate 230 to move away from the slag bed 100 .

[0047] like Figures 2 to 8As shown, the slag pushing plate 230 is arranged above the slag bed 100 along the width direction of the slag bed 100. Specifically, the slag pushing plate 230 includes a second crossbeam 231 and a push plate 232. The second crossbeam 231 is connected to the lifting device 240. The push plate 232 is a rectangular straight plate. One end of the push plate 232 is detachably connected to the second crossbeam 231 by bolts, so that the push plate 232 can be replaced when the push plate 232 is severely worn. The spacing between the two ends of the push plate 232 along the width direction of the slag bed 100 is adapted to the width of the slag bed 100, and the push plate 232 is directly opposite to the slag bed 100, so as to ensure that the crushed steel slag can be pushed into the slag receiving port 110 along the length direction of the slag bed 100.

[0048] like Figure 7 and Figure 8 As shown, further, a plurality of ribs 233 are provided on the push plate 232, and the plurality of ribs 233 are fixed on the push plate at intervals, and one end of the rib 233 is welded and fixed to the second cross beam 231, and the rib 233 can enhance the anti-deformation ability of the push plate 232. The rib 233 is provided on the side of the push plate 232 facing away from the slag receiving opening 110.

[0049] like Figure 5 As shown, in addition, further, bending portions 2321 are provided at both ends of the push plate 232 along the width direction of the slag bed 100, and the bending direction of the bending portion 2321 is bent along the length direction of the slag bed 100 and toward one end of the length direction of the slag bed 100 where the slag receiving port 110 is located, and the bending angle of the bending portion 2321 is less than 90°, so that the push plate 232 forms a flared structure, so that in the process of pushing the slag, the slag can be gathered in the middle part of the push plate 232, thereby reducing the defect of the slag leaking from the edge of the push plate 232.

[0050] It should be noted that, in addition to being detachably connected to the second cross beam 231 by bolts, the push plate 232 can also be detachably connected to the second cross beam 231 by a snap structure or other locking structure. Of course, when necessary, the push plate 232 can also be directly welded to the second cross beam 231 by welding. In addition, in addition to being a rectangular plate, the push plate 232 can also be a structure of other shapes such as a bent plate, an arc plate, etc., as long as the steel slag can be pushed into the slag receiving port 110.

[0051] like Figure 1 and Figure 6As shown, the lifting device 240 is a telescopic oil cylinder, and the slag pushing plate 230 will not contact the molten steel slag and the crushed steel slag. When the lifting device 240 drives the slag pushing plate 230 to approach the slag bed 100, the slag pushing plate 230 can push the crushed steel slag. The lifting device 240 drives the slag pushing plate 230 to move in a direction close to the slag bed 100 or away from the slag bed 100. In this embodiment, the lifting device 240 drives the slag pushing plate 230 to move in a direction perpendicular to the slag bed surface 120 to achieve approaching the slag bed 100 or away from the slag bed 100. When the lifting device 240 drives the slag pushing plate 230 to rise to the highest height (the maximum distance between the slag pushing plate 230 and the slag bed surface 120), the maximum distance between the lower end of the push plate 232 and the slag bed surface 120 is greater than the highest height of the molten steel slag laid on the slag bed surface 120, so that the push plate 232 will not contact the molten steel slag. This state is mainly used in the process of rake dividing the molten steel slag; when the lifting device 240 drives the slag pushing plate 230 to descend to the lowest height (i.e., the minimum distance between the slag pushing plate 230 and the slag bed surface 120), the lower end of the push plate 232 is in contact with the slag bed surface 120, thereby pushing all small slag blocks on the slag bed into the slag receiving port 110.

[0052] When the rake 220 is needed to split the molten slag, the slag pusher plate 230 of the rake vehicle 200 rises to the highest height. After the molten slag is formed into small slag blocks by the rake 220 and the sprayer 320, the slag pusher plate 230 is driven by the lifting device 240 to descend, so that the slag pusher plate 230 can push the crushed slag into the slag receiving port 110, and then directly enter other subsequent processes, or be transported to other processes by a transport vehicle.

[0053] It should be pointed out that the lifting device 240 is preferably a multi-stage lifting device, that is, the telescopic cylinder is a multi-stage telescopic cylinder. In this way, when it is necessary to push the crushed small slag blocks, the slag pushing plate 230 can be gradually close to the slag bed 100 under the action of the lifting device 240, which can not only reduce the power required to push all the small slag blocks at one time, but also avoid the possibility that the slag height is higher than the height of the second beam 231 due to the continuous accumulation of slag during the pushing process due to pushing all the slag at one time, and some small slag blocks will fall back on the slag bed 100 over the top of the second beam 231, resulting in the defect of poor slag pushing effect. When the lifting device 240 is a telescopic cylinder, the hydraulic system 241 that provides power for the telescopic cylinder is also fixed on the first walking device 250. In addition to being a multi-stage telescopic cylinder, the lifting device 240 can also use other devices such as telescopic cylinders, gear chain mechanisms, etc. that can realize the lifting and lowering of the slag pushing plate 230.

[0054] When the lifting device 240 is a multi-stage lifting device, the lifting device 240 drives the slag pushing plate 230 to descend step by step during the process, that is, the slag pushing plate 230 stops descending after descending a certain distance, the rake car 200 moves toward the slag receiving port 110 once, and pushes a layer of small slag blocks into the slag receiving port 110, then the rake car 200 returns to the end of the slag bed 100 away from the slag receiving port 110 in the length direction, the lifting device 240 drives the slag pushing plate 230 to descend a certain distance again and stops descending, then the rake car 200 moves toward the slag receiving port 110 once again, and pushes a layer of small slag blocks into the slag receiving port 110; and so on, the slag pushing plate 230 descends step by step until the lower end surface of the slag pushing plate 230 is in contact with the slag bed surface 120, and all the remaining small slag blocks are pushed into the slag receiving port 110.

[0055] like Figure 4 and Figure 5 As shown, in this embodiment, the rake teeth 222 include first rake teeth 2221 and second rake teeth 2222, a plurality of first rake teeth 2221 are arranged at intervals along the length direction of the first crossbeam 221 to form at least one row of first rake teeth 2221 units, a plurality of second rake teeth 2222 are arranged at intervals along the length direction of the first crossbeam 221 to form at least one row of second rake teeth 2222 units, the first rake teeth 2221 units and the second rake teeth 2222 units are arranged alternately at intervals along the length direction of the slag bed 100 to form multiple rows of rake teeth 222, and the first rake teeth 2221 are directly opposite to the gap between two adjacent second rake teeth 2222. In this way, after the molten steel slag is cut by the first rake teeth 2221, it will enter the gap between the adjacent first rake teeth 2221, and the second rake teeth 2222 are directly opposite to the gap between the first rake teeth 2221, so that the molten steel slag cut by the first rake teeth 2221 can be cut again, thereby improving the cutting ability and cutting effect of the rake teeth 222 on the molten steel slag. Furthermore, the rake 220 is used to crush the molten steel slag. Since the rake teeth 222 are always in contact with the molten steel slag during the crushing process, the molten steel slag is not easily adhered to the rake 220 .

[0056] like Figure 4 and Figure 5As shown, in addition, the projection of the first rake tooth 2221 on the slag bed 100 has a first angle with the length direction of the slag bed 100, and the projection of the second rake tooth 2222 on the slag bed 100 has a second angle with the length direction of the slag bed 100, 0°<first angle<90°, 90°<second angle<180°, the molten steel slag after being cut by the first rake tooth 2221 will be shoveled in the inclined direction of the first rake tooth 2221, and the molten steel slag after being cut by the second rake tooth 2222 will be inclined in the inclined direction of the second rake tooth 2222. The first rake teeth 2221 and the second rake teeth 2222 are shoveled in opposite directions. Therefore, the molten steel slag is shoveled in opposite directions after being cut by the first rake teeth 2221 and the second rake teeth 2222 in sequence. This can ensure that the cut molten steel slag will not deviate to the edges on both sides of the length direction of the slag bed 100, and at the same time, the first rake teeth 2221 and the second rake teeth 2222 can have a certain cross-cutting effect on the molten steel slag, so that the molten steel slag can be cooled and cut into small pieces of slag faster.

[0057] In addition, during the crushing process of the molten steel slag, there may be large slag lumps that have agglomerated before being crushed. Such large slag lumps cannot be directly crushed by the rake 220. At the same time, directly pushing the large slag lumps into the slag receiving port 110 through the slag pushing plate 230 may cause the slag receiving port 110 to be blocked or unable to be digested in the subsequent digestion process. Therefore, it is necessary to transport the large slag lumps out of the slag bed 100 for additional processing.

[0058] like Figure 6 and Figure 7As shown, in this regard, the present embodiment is also provided with first chutes 2101 on the upper end surfaces of both ends of the vehicle body 210, the first chutes 2101 are perpendicular to the slag bed surface 120, and the bottom of the first chutes 2101 is close to the slag bed 100, and the bottom of the first chutes 2101 is far away from the slag bed 100, and the two ends of the first crossbeam 221 are respectively slidably connected in the two first chutes 2101, so that the first crossbeam 221 and the rake teeth 222 can move up and down along the first chutes 2101. In addition, a first inclined surface 2223 for avoiding large slag lumps is provided in the direction of the rake teeth 222 toward the slag receiving port 110, and the first inclined surface 2223 is formed by cutting off a corner of the rake teeth 222. When the rake 220 moves toward the slag receiving port 110 to cut the molten steel slag, the first inclined surface 2223 will first contact the molten steel slag, and the molten steel slag will provide an upward thrust to the rake teeth 222 through the first inclined surface 2223. However, due to the weight of the first crossbeam 221 and the rake teeth 222 themselves, when cutting the molten steel slag, the thrust provided by the molten steel slag is less than the self-weight of the first crossbeam 221 and the rake teeth 222. Therefore, the first crossbeam 221 and the rake teeth 222 will not move along the first chute 2101 to the top of the first chute 2101 due to the first inclined surface 2223, so that the rake teeth 222 can cut the molten steel slag. If necessary, a configuration block can be installed on the first crossbeam 221 to increase the overall weight of the first crossbeam 221 and the rake teeth 222. When the rake teeth 222 encounter a large slag lump that has already agglomerated, the rake teeth 222 The large agglomerated slag cannot be cut apart, so that the thrust provided by the large piece of molten slag is greater than the deadweight of the first crossbeam 221 and the rake teeth 222, so that the rake teeth 222 can move toward the first chute 2101 with the help of the thrust generated between the first inclined surface 2223 and the large slag, avoiding the large piece of slag and preventing the large slag from being pushed into the slag receiving port 110. In addition, when the rake vehicle 200 moves away from the slag receiving port 110, the other side of the rake teeth 222 will contact the large slag, and the first inclined surface 2223 is not provided on the other side of the rake teeth 222, and the other side of the rake teeth 222 is perpendicular to the slag bed surface 120. Therefore, there is no thrust that can be provided for the rake teeth 222 to move upward, so that the rake teeth 222 can push the large slag to the other end of the slag bed 100 away from the slag receiving port 110, and then the large slag is specially treated by other processes and equipment. The distance between the two ends of the first inclined surface 2223 in the height direction is greater than the maximum diameter of a large slag lump generated by the molten steel slag, so that the first inclined surface 2223 can adapt to molten steel slag of different diameters.

[0059] like Figure 6As shown, a buffer pad 223 is also provided at the bottom of the first chute 2101, and the buffer pad 223 is made of elastic rubber or hemp rope. When the first crossbeam 221 slides to the bottom of the first chute 2101, the buffer pad 223 can play a buffering role on the first crossbeam 221, preventing the first crossbeam 221 from directly colliding with the bottom of the first chute 2101. In addition, baffles 2211 are respectively provided at both ends of the first crossbeam 221 along the width direction of the slag bed 100. The baffles 2211 are detachably connected or welded to the ends of the first crossbeam 221, and the baffles 2211 at both ends of the first crossbeam 221 jointly restrict the first crossbeam 221 from moving along the width direction of the slag bed 100, thereby preventing the ends of the first crossbeam 221 from falling off from the first chute 2101 during the rising or falling process of the first crossbeam 221.

[0060] like Figure 6 As shown, further, a second inclined surface 2103 is provided on one side wall of the first chute 2101 for facilitating the rake teeth 222 to avoid and slide, and the inclination direction of the second inclined surface 2103 is opposite to the inclination direction of the first inclined surface 2223. In this embodiment, the second inclined surface 2103 is a side surface of the first chute 2101 away from the slag receiving port 110 in the length direction of the slag bed 100, and one side of the first beam 221 is also an inclined surface and is adapted to the second inclined surface 2103, so that when the rake teeth 222 avoid large slag lumps, the first beam 221 can rise along the second inclined surface 2103, and the thrust required for the rise is smaller.

[0061] like Figure 6 and Figure 7 As shown, in addition, a second chute 2102 may be selectively provided on the vehicle body 210, and the second chute 2102 is disposed on the slag bed surface 120, and the two ends of the second beam 231 are respectively located in the two second chute 2102. By providing the second chute 2102, the second beam 231 can be closer to the slag bed 100 during the descent process, thereby reducing the distance between the two ends of the push plate 232 in the vertical direction, and reducing the deformation of the push plate 232 caused by the push plate 232 being too long during the process of pushing the crushed steel slag. In addition, a buffer pad 223 is also provided at the bottom of the second chute 2102 to prevent direct collision between the second beam 231 and the second chute 2102.

[0062] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A molten steel slag pretreatment device, characterized in that: include: A slag bed, wherein molten steel slag is carried on a bed surface of the slag bed, the slag bed has a length direction and a width direction, and a slag receiving opening is provided at one end of the length direction of the slag bed; A rake vehicle, the rake vehicle comprising a vehicle body, a rake and a first traveling device, the rake being arranged above the slag bed along the width direction of the slag bed, the first traveling device being connected to the vehicle body and driving the rake to move along the length direction of the slag bed, the vehicle body being a gantry structure; and, A dust removal vehicle comprises a dust removal hood, a sprayer and a second walking device, wherein the second walking device is connected to the dust removal hood and drives the dust removal hood to move along the length direction of the slag bed, the sprayer is arranged in the dust removal hood, and the opposite ends of the dust removal hood are provided with entrances and exits for avoiding the slag bed and the rake vehicle.

2. A molten steel slag pretreatment device according to claim 1, characterized in that: The rake includes a first crossbeam and a plurality of rake teeth connected to the first crossbeam, wherein the plurality of rake teeth are arranged at intervals and face the slag bed.

3. A molten steel slag pretreatment device according to claim 2, characterized in that: The rake teeth include first rake teeth and second rake teeth, a plurality of the first rake teeth are arranged at intervals along the length direction of the first crossbeam to form at least one row of first rake tooth units, a plurality of the second rake teeth are arranged at intervals along the length direction of the first crossbeam to form at least one row of second rake tooth units, the first rake tooth units and the second rake tooth units are alternately arranged at intervals along the length direction of the slag bed, and each of the first rake teeth is directly opposite to the gap between two adjacent second rake teeth.

4. A molten steel slag pretreatment device according to claim 3, characterized in that: The projection of the first rake tooth on the slag bed has a first angle with the length direction of the slag bed, the projection of the second rake tooth on the slag bed has a second angle with the length direction of the slag bed, 0°<the first angle<90°, 90°<the second angle<180°.

5. The molten steel slag pretreatment device according to claim 2, characterized in that: The vehicle body is provided with a first chute, the bottom of which is close to the slag bed, the top of which is far away from the slag bed, the first crossbeam is slidably installed in the first chute, and the rake teeth are provided with a first inclined surface towards the slag receiving port for avoiding large slag lumps.

6. A molten steel slag pretreatment device according to claim 5, characterized in that: One side wall of the first sliding groove is a second inclined surface, and the inclined direction of the second inclined surface is opposite to the inclined direction of the first inclined surface.

7. A molten steel slag pretreatment device according to any one of claims 1 to 6, characterized in that: The rake vehicle further comprises a slag pushing plate and a lifting device, one end of the lifting device is fixed to the vehicle body, and the other end of the lifting device is connected to the slag pushing plate to drive the slag pushing plate to approach or move away from the slag bed.

8. The molten steel slag pretreatment device according to claim 7, characterized in that: The slag pushing plate includes a second cross beam and a push plate connected to the second cross beam, the push plate faces the slag bed, and the slag pushing plate is provided with bending portions at both ends in the width direction of the slag bed, the bending direction of the bending portion is along the length direction of the slag bed toward the slag receiving port, the bending angle of the bending portion is less than 90°, and the length of the push plate in the width direction of the slag bed is adapted to the width of the slag bed.

9. The molten steel slag pretreatment device according to claim 7, characterized in that: The first walking device and the second walking device have the same structure and both include walking wheels and walking tracks. The walking wheels cooperate with the walking tracks. The walking tracks are parallel to the length direction of the slag bed. The walking wheels in the first walking device are connected to the vehicle body, and the walking wheels in the second walking device are connected to the dust hood.

10. The molten steel slag pretreatment device according to claim 1, characterized in that: The sprayer comprises a spray pipe and a plurality of spray heads connected to the spray pipe, and the plurality of spray heads are arranged at intervals along the width direction of the slag bed.

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