Steel slag thermal crushing and cooling equipment

Abstract

The invention relates to the technical field of steelmaking equipment, in particular to steel slag thermal crushing and cooling equipment which comprises a portal frame and a control case connected with the portal frame and further comprises a compression roller assembly, a transmission assembly, a cooling assembly and a slag discharging assembly. The time for molten steel slag to enter the slag pool is prolonged through the slag discharging assembly, the molten steel slag can make full contact with the external environment in the falling process to be rapidly cooled, meanwhile, cooling water is sprayed to the surface of the falling steel slag, the falling steel slag can be rapidly converted into a hard-shell steel slag state when falling into the slag pool, the cooling speed of the steel slag is increased, and then the working efficiency is improved. And meanwhile, the slag discharging position is kept in the advancing direction of the pressing roller assembly, so that the pressing roller assembly can crush the hard-shell steel slag falling into the slag pool in time, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of steelmaking equipment, in particular to a steel slag thermal crushing and temperature reduction cooling device. Background Art

[0002] my country is a major steel producer, and steel slag is a solid waste composed of steelmaking desulfurizers, smelting chemical reaction products, etc., and is a by-product of the steelmaking process. If these steel slags cannot be used, there will be a huge waste of resources. At the same time, large-scale dumping of steel slag will occupy land resources and cause serious pollution to the environment. Since a large amount of lime is added during the steelmaking process and the slag making time is short, this will cause a large amount of CaO and MgO to be unable to be completely melted and be wrapped in the steel slag in a free state. In order to turn the steel slag into a usable resource again, the steel slag needs to be treated.

[0003] The most commonly used method for treating steel slag is hot stewing, which is mainly divided into two steps. The first step is called "roller crushing", which is mainly for the preliminary crushing and cooling of the molten steel slag; the second step is called "pressurized hot stewing", which is mainly for the stabilization of the steel slag after roller crushing. The waste heat of the steel slag is combined with water vapor or other media to cause hydration reaction of the steel slag, so that the free calcium oxide and free magnesium oxide in the steel slag expand in volume, thereby achieving the crushing and stabilization of the steel slag.

[0004] Among them, the "roller crushing" stage is mainly to provide the appropriate slag temperature and particle size for the "pressurized hot stewing" stage, thereby providing favorable conditions for the rapid self-decomposition of the slag in the second stage. Specifically, the slag is first poured into the slag pool, and then the cooling spray device is started to cool the molten slag with cooling water to form a hard shell on its surface. At the same time, the pressure roller is started to rotate and move back and forth along the slag pool to crush the slag in the slag pool. However, the hard shell is usually only formed on the surface of the molten slag, and the slag under the hard shell is still in a molten state. When the pressure roller crushes the hard shell slag, the roller teeth on the surface of the pressure roller will also press the hard shell slag into the molten slag. This makes the crushed hard shell slag mixed with the molten slag that has not formed a hard shell under the stirring and crushing of the pressure roller. The two are easy to stick together and re-form larger pieces of slag, so that the pressure roller needs to crush it repeatedly, which reduces the work efficiency.

[0005] Therefore, a steel slag thermal crushing and cooling device is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a steel slag thermal crushing and temperature reduction cooling equipment, which solves the problem that the hard-shell steel slag is mixed and adhered to the molten steel slag during roller crushing, the volume is increased and repeated crushing is required, thus affecting the work efficiency. The slag is continuously dropped into the slag pool by the slag discharge component, and the cooling water is sprayed on the surface of the steel slag in the falling state by the cooling component, so that it is quickly solidified into a hard shell state when it falls into the slag pool, thereby avoiding the situation that the crushed hard-shell steel slag is mixed with the molten steel slag on a large area to increase the volume and need to be repeatedly crushed, thereby improving the work efficiency.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A steel slag thermal crushing and cooling equipment is used in conjunction with a slag pool, comprising a gantry and a control chassis, wherein the control chassis is connected to the gantry, and further comprises a pressure roller assembly, a transmission assembly, a cooling assembly and a slag discharge assembly, wherein the pressure roller assembly is connected to the control chassis, the transmission assembly is connected to the pressure roller assembly, the cooling assembly is connected to the gantry, and the slag discharge assembly is connected to the gantry, the control chassis drives the gantry to move while driving the pressure roller assembly to rotate, the slag discharge assembly is symmetrically arranged on both sides of the pressure roller assembly, and when the pressure roller assembly rotates, the slag discharge assembly on both sides will be opened respectively through the transmission assembly, and the slag discharge position of the slag discharge assembly is always maintained in the forward direction of the pressure roller assembly, and the cooling assembly sprays cooling water on the steel slag falling from the slag discharge assembly.

[0009] Through the above scheme, the original scheme of dumping all the slag into the slag pool is changed to pouring it into the slag discharge assembly, and the slag is continuously dropped into the slag pool through the slag discharge assembly. The molten slag is rapidly cooled by the external ambient temperature during the falling process, and at the same time, the cooling water is continuously sprayed on the surface of the slag in the falling process through the cooling assembly, so that it quickly forms a hard shell when falling into the slag pool, and then the slag with the hard shell is crushed by the pressure roller assembly, thereby avoiding the situation in the traditional scheme that the crushed hard-shell slag is re-mixed with the molten slag under the stirring of the pressure roller assembly, thereby increasing the volume and requiring repeated crushing; in addition, the slag discharge positions of the slag discharge assembly are respectively arranged on the left and right sides of the pressure roller assembly, and the openings of the slag discharge positions on both sides are controlled by the rotation direction of the pressure roller assembly to ensure that the slag discharge position is always maintained in the forward direction of the pressure roller assembly, so that the pressure roller assembly can timely crush the hard-shell slag that falls into the slag pool, reducing the number of repeated crushing times and improving work efficiency.

[0010] Preferably, the pressure roller assembly includes a roller and roller teeth, the roller is connected to a control cabinet, a plurality of rows of roller teeth are arranged on the surface of the roller, and each row of roller teeth is arranged in an inverted "V" shape.

[0011] Through the above scheme, it is possible to form multi-point force when the roller teeth contact the hard-shell steel slag, thereby increasing the contact area and shear force of the crushing, and then efficiently crushing large pieces of hard-shell steel slag into smaller particles, thereby improving the crushing effect.

[0012] Preferably, the transmission assembly includes an active bevel gear, a mounting rod, a driven bevel gear, a transmission gear, a main tooth plate, a secondary tooth plate, a connecting rod, a return spring and a push rod, the active bevel gear is connected to the roller, the mounting rod is connected to the gantry, the driven bevel gear is connected to the mounting rod, the active bevel gear and the driven bevel gear are meshed, the transmission gear is connected to the driven bevel gear, the main tooth plate is connected to the cooling assembly and meshed with the transmission gear, the connecting rod is connected to the main tooth plate, the secondary tooth plate is slidably connected to the connecting rod, the return spring is sleeved on the connecting rod, and its two ends are respectively connected to the main tooth plate and the secondary tooth plate, and the two ends of the push rod are respectively connected to the main tooth plate and the slag discharge assembly.

[0013] Through the above scheme, since the two driven bevel gears are respectively meshed with the left and right sides of the active bevel gear, when the active bevel gear rotates with the roller, the rotation directions of the driven bevel gears on both sides are opposite, thereby driving the two main tooth plates on both sides to move in opposite directions. Because the push rods are respectively connected to the main tooth plates and the slag discharge assembly, the slag discharge positions on both sides of the slag discharge assembly can be controlled to be in an open and closed state respectively through the movement of the main tooth plates, thereby ensuring that the slag discharge position is always maintained in the forward direction of the pressure roller assembly, thereby ensuring the crushing efficiency of the hard-shell steel slag falling into the slag pool.

[0014] Preferably, the cooling assembly includes a water tank and a spray pipe, the water tank is connected to the lower side of the gantry, and multiple rows of spray pipes are connected to the lower side of the water tank. The inner spray pipe is set vertically downward, and the outer spray pipe is set inclined toward the position where the slag falls.

[0015] Through the above scheme, the inclined spray pipe can spray cooling water directly on the surface of the molten slag in the falling process, so that it can cool down quickly and form a hard shell, thereby improving its cooling and crusting efficiency; and the vertical spray pipe directly sprays cooling water on the roller surface. On the one hand, it can cool the roller and the roller tooth surface to ensure their service life, and on the other hand, it can cover the dust generated when the slag is crushed and optimize the working environment. In addition, the cooling water on the roller surface flows downward to the crushed slag surface as the roller rotates, so that it is further cooled. At the same time, the cooling water remaining on the surface of the crushed hard-shell slag can have a certain isolation effect on the subsequent falling slag, preventing the slag from sticking together again at high temperature, thereby ensuring the crushing effect of the slag.

[0016] Preferably, a spray plate is provided at the end of the spray pipe, and fine water outlets are opened on the spray plate.

[0017] Through the above scheme, the cooling water sprayed from the spray pipe is formed into a structure similar to a shower head through the spray plate, thereby increasing the coverage of the cooling water and ensuring that the molten steel slag in a falling state can fully contact the cooling water, thereby quickly forming a hard shell, thereby ensuring the cooling efficiency and effect of the steel slag.

[0018] Preferably, the slag discharge assembly includes a slag storage tank, a slag discharge port, a mounting groove, a baffle and a push plate, the slag storage tank is connected to the gantry, the slag discharge port is arranged at the bottom of the slag storage tank, the mounting groove is opened on the side wall of the slag storage tank, the baffle is slidably connected to the slag storage tank, the push plate is connected to the baffle, and the push plate extending to the outside of the slag storage tank is connected to the push rod.

[0019] Through the above scheme, the molten slag is poured into the slag storage tank, so that it continues to fall from the slag outlet into the slag pool, extending the time it takes to enter the slag pool, so that the molten slag can be quickly cooled to form a hard shell when entering the slag pool, thereby facilitating the roller assembly to crush it, avoiding the situation where the hard shell slag and the molten slag are mixed and need to be crushed repeatedly, thereby ensuring the crushing efficiency of the slag.

[0020] Preferably, the length of the push plate is greater than the length of the mounting groove, and the mounting groove is inclined.

[0021] Through the above solution, the push plate can completely cover the installation groove when moving, and the inclined installation groove can also increase the difficulty of slag flowing out, thereby preventing molten slag from flowing out of the installation groove.

[0022] Preferably, a plurality of slag outlets are provided, and their positions correspond to the positions of the spray pipes.

[0023] Through the above scheme, the molten steel slag flowing out of the slag outlet can fully contact with the cooling water sprayed from the spray pipe, so that it can be quickly cooled to form a hard shell, thereby improving its cooling efficiency.

[0024] Preferably, the bottom of the slag storage tank is provided with a plurality of groups of fixed convex strips, the fixed convex strips are in a "7" shape, and the baffle is provided with a plurality of groups of movable convex strips, and the movable convex strips are staggered with the fixed convex strips.

[0025] Since the molten steel slag in the slag storage tank is in a slow flow state, a layer of hard-shell steel slag will also form on its upper surface. Through the above scheme, the slag discharge position is controlled by controlling whether the baffle plate blocks the slag discharge port. When the baffle plate is moved when the slag discharge position is switched, the movable convex strips and the fixed convex strips will be interlaced with each other, thereby breaking the hard-shell steel slag formed in the slag storage tank so that it can fall smoothly from the slag discharge port into the slag pool.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. A steel slag thermal crushing and temperature reduction cooling device of the present invention prolongs the time for molten steel slag to enter the slag pool through a slag discharge assembly, so that it can fully contact the external environment and cool quickly during the falling process, and at the same time, cooling water is sprayed on the surface of the falling steel slag, so that it can quickly transform into a hard-shell steel slag state when falling into the slag pool, thereby improving its cooling speed and further improving work efficiency; at the same time, by keeping the slag discharge position in the forward direction of the pressure roller assembly, the pressure roller assembly can timely crush the hard-shell steel slag falling into the slag pool, thereby improving work efficiency.

[0028] 2. A slag thermal crushing and cooling device of the present invention, by arranging a spray component to cooperate with the slag dropping method of the slag discharge component, allows cooling water to be directly sprayed on the surface of the slag in a falling state, thereby quickly cooling it and forming a hard shell. At the same time, the coverage of the cooling water is increased by the spray plate, so that the falling slag can fully contact with the cooling water, thereby ensuring its cooling effect. On the other hand, it can cover the dust generated when the slag is crushed, thereby optimizing the working environment; at the same time, the spray pipe in a vertical state will also spray cooling water on the surface of the roller, thereby cooling the roller and ensuring its service life. On the other hand, the spray pipe in the opposite direction of the roller's forward direction will spray cooling water on the surface of the crushed slag, which can have a certain isolation effect on the subsequent falling slag, thereby preventing the slag from re-adhering together at high temperature, avoiding repeated crushing, and ensuring the crushing efficiency and cooling effect of the slag.

[0029] 3. A steel slag thermal crushing and temperature reduction cooling device of the present invention, by arranging a plurality of slag outlets, allows the molten steel slag in the slag storage tank to slowly flow out from the slag outlets, prolonging the time for it to fall into the slag pool, and forming a cylindrical fluid when it falls from the slag outlet, thereby increasing its contact area with the outside air, thereby improving its cooling efficiency; at the same time, the position of the slag outlet corresponds to the position of the spray pipe one by one, so that the molten steel slag flowing out of the slag outlet can fully contact with the cooling water, so that it can quickly form a hard shell when falling into the slag pool, thereby improving its cooling efficiency, and at the same time avoiding the crushed steel slag from being mixed with a large amount of molten steel slag again, resulting in the need for repeated crushing, thereby ensuring the crushing efficiency of the steel slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of the roller and roller teeth of the present invention;

[0032] Figure 3 It is a schematic diagram of the overall structure of the transmission assembly of the present invention;

[0033] Figure 4It is a structural schematic diagram of the main gear plate and the auxiliary gear plate of the present invention;

[0034] Figure 5 It is a schematic diagram of the overall structure of the cooling assembly of the present invention;

[0035] Figure 6 It is a structural schematic diagram of the positional relationship of multiple rows of spray pipes of the present invention;

[0036] Figure 7 It is a schematic diagram of the structure of the slag storage tank of the present invention;

[0037] Figure 8 It is a schematic diagram of the structure of the baffle and the push plate of the present invention;

[0038] Fig. 9 This is a state diagram of the baffle of the present invention covering the slag outlet;

[0039] Fig.10 This is a diagram showing a state in which the baffle of the present invention exposes the slag outlet.

[0040] In the figure: 1. slag pool; 2. gantry; 3. control box; 4. pressure roller assembly; 401. roller; 402. roller teeth; 5. transmission assembly; 501. active bevel gear; 502. mounting rod; 503. driven bevel gear; 504. transmission gear; 505. main gear plate; 506. auxiliary gear plate; 507. connecting rod; 508. reset spring; 509. push rod; 6. cooling assembly; 601. water storage tank; 602. spray pipe; 603. spray plate; 7. slag discharge assembly; 701. slag storage tank; 702. slag discharge port; 703. mounting slot; 704. baffle; 705. push plate; 706. fixed convex strip; 707. movable convex strip. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] See also Figures 1 to 10 The present invention provides a steel slag thermal crushing and cooling equipment, the technical scheme is as follows:

[0043] For details, please refer to Figure 1 and Figure 2A steel slag thermal crushing and cooling device is used in conjunction with a slag pool 1, including a gantry 2 and a control box 3. A plurality of moving wheels are installed at the bottom of the gantry 2, and the moving wheels are also controlled by the control box 3. The control box 3 is connected to the gantry 2, and a driving source such as a motor capable of driving a roller assembly 4 to rotate is also provided inside the control box 3. The roller assembly 4, a transmission assembly 5, a cooling assembly 6 and a slag discharge assembly 7 are also included. The roller assembly 4 is connected to the control box 3. The roller assembly 4 includes a roller 401 The roller 401 is connected to the control box 3, which provides power for the rotation of the roller 401 and can change its rotation direction. Multiple rows of roller teeth 402 are arranged on the surface of the roller 401, and each row of roller teeth 402 is arranged in an inverted "V" shape. This arrangement can form multi-point force when the roller teeth 402 contact the hard-shell steel slag, thereby increasing the contact area and shear force of the crushing, and then efficiently crushing the large pieces of hard-shell steel slag into smaller particles, thereby improving the crushing effect.

[0044] As an embodiment of the present invention, refer to Figure 3 and Figure 4, the transmission assembly 5 is connected to the pressure roller assembly 4, and the transmission assembly 5 includes a driving bevel gear 501, a mounting rod 502, a driven bevel gear 503, a transmission gear 504, a main tooth plate 505, a secondary tooth plate 506, a connecting rod 507, a return spring 508 and a push rod 509. The driving bevel gear 501 is fixedly connected to the roller 401, the mounting rod 502 is connected to the gantry 2, the driven bevel gear 503 is rotatably connected to the mounting rod 502, and the driving bevel gear 501 is also rotatably connected to the mounting rod 502. There are two driven bevel gears 503, which are respectively meshed on the left and right sides of the driving bevel gear 501. The transmission gear 504 is fixed to the driven bevel gear 503, and the main tooth plate 505 is slidably connected to the lower side of the cooling assembly 6 and meshed with the transmission gear 504. Therefore, when the driving bevel gear 501 rotates with the roller 401, the rotation directions of the driven bevel gears 503 on both sides are opposite, thereby driving the two main bevel gears 501 on both sides. The tooth plate 505 moves in the opposite direction, the connecting rod 507 is connected to the main tooth plate 505, the auxiliary tooth plate 506 is slidably connected to the connecting rod 507, the return spring 508 is sleeved on the connecting rod 507, and the two ends are respectively connected to the main tooth plate 505 and the auxiliary tooth plate 506. Under the continuous rotation of the roller 401, the transmission gear 504 will also rotate continuously. When the transmission gear 504 drives the main tooth plate 505 to move to the specified position, the continuously rotating transmission gear 504 will mesh with the auxiliary tooth plate 506. Because a return spring 508 is connected between the auxiliary tooth plate 506 and the main tooth plate 505, the transmission gear 504 can no longer push the main tooth plate 505 to move; the two ends of the push rod 509 are respectively connected to the main tooth plate 505 and the slag discharge assembly 7, which are used to switch the slag discharge position of the slag discharge assembly 7, thereby ensuring that the slag discharge position is always maintained in the forward direction of the pressure roller assembly 4, thereby ensuring the crushing efficiency of the hard-shell steel slag falling into the slag pool 1.

[0045] As an embodiment of the present invention, refer to Figure 5 and Figure 6 The cooling assembly 6 is connected to the gantry 2. The cooling assembly 6 includes a water tank 601 and a spray pipe 602. The water tank 601 is connected to the lower side of the gantry 2. One side of the water tank 601 is provided with a water inlet pipe for connecting to an external water source. Multiple rows of spray pipes 602 are connected to the lower side of the water tank 601. A spray plate 603 is provided at the end of the spray pipe 602. The spray plate 603 is provided with a fine water outlet, so that the cooling water sprayed from the spray pipe 602 forms a structure similar to a shower head, which increases the coverage of the cooling water, ensures that the molten steel slag in the falling state can fully contact the cooling water, and then quickly forms a hard shell, thereby ensuring the cooling efficiency and effect of the steel slag;

[0046] The inner spray pipe 602 is set in a vertical downward direction, and can directly spray cooling water on the surface of the roller 401. On the one hand, it can cool the surface of the roller 401 and the roller teeth 402 to ensure their service life. On the other hand, it can cover the dust generated when the slag is crushed to optimize the working environment. The outer spray pipe 602 is set in an inclined direction toward the position where the slag falls, so that cooling water can be sprayed directly on the surface of the molten slag in the falling process, so that it can cool down quickly, thereby forming a hard shell, thereby improving its cooling and shelling efficiency.

[0047] As an embodiment of the present invention, refer to Figures 7 to 10 , the slag discharge assembly 7 is connected to the gantry 2, and the slag discharge assembly 7 includes a slag storage tank 701, a slag outlet 702, a mounting groove 703, a baffle 704 and a push plate 705. The slag storage tank 701 is connected to the gantry 2, and the slag outlet 702 is arranged at the bottom of the slag storage tank 701, and there are multiple slag outlets 702, and their positions correspond to the positions of the spray pipes 602, so that the molten steel slag flowing out of the slag outlet 702 can fully contact with the cooling water sprayed from the spray pipe 602, so that it can be quickly cooled to form a hard shell, thereby improving its cooling efficiency. When in use, the molten steel slag is poured into the slag storage tank 701, so that it continues to fall from the slag outlet 702 into the slag pool 1, and the time for it to enter the slag pool 1 is extended, so that the molten steel slag can be quickly cooled to form a hard shell when entering the slag pool 1, so that it is convenient for the roller assembly 4 to crush it, and avoid the situation where the hard shell steel slag and the molten steel slag are mixed and need to be repeatedly crushed, thereby ensuring the crushing efficiency of the steel slag;

[0048] The mounting groove 703 is provided on the side wall of the slag storage tank 701, the baffle 704 is slidably connected to the slag storage tank 701, the push plate 705 is connected to the baffle 704, the length of the push plate 705 is greater than the length of the mounting groove 703, and the mounting groove 703 is tilted so that the push plate 705 can completely cover the mounting groove 703 when moving, and the tilted mounting groove 703 can also increase the difficulty of slag flowing out, and prevent the molten slag from flowing out of the mounting groove 703, and the push plate 705 extending to the outside of the slag storage tank 701 is connected to the push rod 509;

[0049] A plurality of fixed ridges 706 are provided at the bottom of the slag storage trough 701, and the fixed ridges 706 are in the shape of a "7". A plurality of movable ridges 707 are provided on the baffle 704, and the movable ridges 707 are alternately arranged with the fixed ridges 706. When the baffle 704 is moved to switch the slag discharge position, the movable ridges 707 and the fixed ridges 706 will be interlaced with each other, thereby crushing the hard-shell steel slag formed in the slag storage trough 701, so that it can smoothly fall into the slag pool 1 from the slag discharge port 702.

[0050] The specific working principle is: by changing the form of steel slag entering the slag pool 1, the molten steel slag is fully contacted with the outside air and cooled when falling from the slag discharge component 7 into the slag pool 1, and at the same time, the cooling water is used to fully cool the falling steel slag, thereby ensuring that the steel slag is transformed into a hard shell state when falling into the slag pool 1, so as to facilitate the crushing of the pressure roller assembly 4, and also avoid the steel slag in the hard shell state from mixing with the molten steel slag and adhering together to form a larger volume, which requires repeated crushing, thereby ensuring the efficiency and effect of the steel slag crushing.

[0051] In order to prevent the hard-shell steel slag after the crushing process from mixing with the molten steel slag and requiring re-crushing, the present solution first stores the molten steel slag in the slag discharge assembly 7, and slows down its speed of falling into the slag pool 1, so that it is fully in contact with air and cooling water during the falling process, thereby forming a hard-shell state when falling into the slag pool 1. On the one hand, it can be convenient for the pressure roller assembly 4 to crush it, and on the other hand, it can make all the steel slag in the slag pool 1 in a hard-shell state, avoiding the situation where it is mixed with the molten steel slag and needs to be crushed again; at the same time, the slag discharge assembly 7 has two slag discharge positions, which are located on the left and right sides of the pressure roller assembly 4 respectively. The present solution uses the different rotation directions of the pressure roller assembly 4 to change the slag discharge position, so that the slag discharge position is always maintained in the forward direction of the pressure roller assembly 4;

[0052] Specifically, firstly, the molten slag is poured into the slag storage tank 701, and then the pressure roller assembly 4 is driven to rotate by the control box 3, and the gantry 2 is driven to drive the pressure roller assembly 4 to move. The moving direction of the pressure roller assembly 4 is opposite to the tangent direction of the roller teeth 402 rotating to the bottom. That is, when the front side is the observation angle, when the roller 401 moves to the left, it rotates counterclockwise; the movement of the transmission assembly 5 is as follows: Figure 3 As shown, the front side is the observation angle, and taking the roller 401 moving to the left as an example, at this time, the roller 401 drives the active bevel gear 501 to rotate counterclockwise, thereby driving the main tooth plate 505 to move backward through the driven bevel gear 503 and the transmission gear 504 on the left side thereof, and at the same time drives the main tooth plate 505 to move forward through the driven bevel gear 503 and the transmission gear 504 on the right side thereof, and uses the push rod 509 connected thereto to push the push plate 705 to drive the blocking piece 704 to move, so that the slag outlet 702 on the left side is in an open state, and the slag outlet 702 on the right side is closed, so that the slag discharge position is maintained in the forward direction of the roller 401;

[0053] When the baffle 704 moves, the movable convex strips 707 on the baffle 704 will be interlaced with the fixed convex strips 706 in the slag storage tank 701, thereby crushing the hard shell steel slag formed in the slag storage tank 701 due to contact with the air, so that it can be smoothly discharged from the slag outlet 702 and fall into the slag pool 1.

[0054] In order to ensure the cooling efficiency of the molten steel slag so that it can quickly form a hard shell when entering the slag pool 1, the present solution is provided with a cooling component 6 to cool the steel slag in a falling state, specifically: the cooling water in the water storage tank 601 is sprayed out from the opening of the spray plate 603 through the spray pipe 602, and the spray pipe 602 is provided with two groups, which are respectively located on the left and right sides of the roller 401, and each group of spray pipes 602 is provided with two rows, wherein the opening direction of a row of spray pipes 602 close to the roller 401 is vertically downwardly arranged, and the opening direction of a row close to the outside is inclined, and the inclined direction is toward the steel slag in a falling state;

[0055] Still taking the front side as the observation angle and the roller 401 moving to the left as an example, the slag outlet 702 on the left side of the roller 401 is in an open state. During the falling process, the steel slag will be covered by the cooling water sprayed from the tilted spray pipe 602, so that the steel slag is cooled and forms a hard shell when falling into the slag pool 1, thereby improving its cooling and crusting efficiency, so that the steel slag in the slag pool 1 is in a hard shell state as much as possible, avoiding the increase in the volume of the crushed steel slag in contact with the molten steel slag and the need for re-crushing;

[0056] At this time, the cooling water sprayed from the spray pipe 602 located on the right side of the roller 401 can be sprayed on the surface of the crushed slag to further cool it down, and the remaining cooling water can also isolate the subsequent falling slag to prevent it from sticking together due to high temperature, thereby ensuring the crushing effect of the slag;

[0057] The spray pipe 602 in a vertical state can directly spray cooling water on the surface of the roller 401. On the one hand, it can cool the surface of the roller 401 and the roller teeth 402 to ensure their service life. On the other hand, it can also clean the steel slag remaining on the surface of the roller teeth 402 to ensure its crushing effect on the steel slag. In addition, the setting of the spray plate 603 can form an effect similar to a shower head, increasing the coverage of the cooling water. On the one hand, it can ensure that the falling steel slag can fully contact with the cooling water to ensure the cooling effect. On the other hand, it can also cover the dust generated when the steel slag is crushed, thereby optimizing the working environment.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel slag thermal crushing and cooling device, used in conjunction with a slag pool (1), comprising a gantry (2) and a control box (3), wherein the control box (3) is connected to the gantry (2), and is characterized in that: The invention also comprises a roller assembly (4), a transmission assembly (5), a cooling assembly (6) and a slag discharge assembly (7); the roller assembly (4) is connected to a control cabinet (3); the transmission assembly (5) is connected to the roller assembly (4); the cooling assembly (6) is connected to a gantry (2); the slag discharge assembly (7) is connected to the gantry (2); the control cabinet (3) drives the gantry (2) to move while driving the roller assembly (4) to rotate; the slag discharge assembly (7) is symmetrically arranged on both sides of the roller assembly (4); when the roller assembly (4) rotates, the slag discharge assembly (7) on both sides is opened respectively through the transmission assembly (5); and the slag discharge position of the slag discharge assembly (7) is always maintained in the forward direction of the roller assembly (4); and the cooling assembly (6) sprays cooling water on the steel slag falling from the slag discharge assembly (7).

2. The slag thermal crushing and cooling equipment according to claim 1, characterized in that: The pressure roller assembly (4) comprises a roller (401) and roller teeth (402); the roller (401) is connected to a control cabinet (3); a plurality of rows of roller teeth (402) are arranged on the surface of the roller (401), and each row of roller teeth (402) is arranged in an inverted "V" shape.

3. The slag thermal crushing and cooling equipment according to claim 2 is characterized in that: The transmission assembly (5) comprises a driving bevel gear (501), a mounting rod (502), a driven bevel gear (503), a transmission gear (504), a main tooth plate (505), a secondary tooth plate (506), a connecting rod (507), a return spring (508) and a push rod (509); the driving bevel gear (501) is connected to the roller (401); the mounting rod (502) is connected to the gantry (2); the driven bevel gear (503) is connected to the mounting rod (502); the driving bevel gear (501) and the driven bevel gear (503) are meshed. The transmission gear (504) is connected to the driven bevel gear (503), the main tooth plate (505) is connected to the cooling assembly (6) and meshes with the transmission gear (504), the connecting rod (507) is connected to the main tooth plate (505), the auxiliary tooth plate (506) is slidably connected to the connecting rod (507), the return spring (508) is sleeved on the connecting rod (507), and the two ends are respectively connected to the main tooth plate (505) and the auxiliary tooth plate (506), and the two ends of the push rod (509) are respectively connected to the main tooth plate (505) and the slag discharge assembly (7).

4. The steel slag thermal crushing and cooling equipment according to claim 3 is characterized in that: The cooling assembly (6) comprises a water tank (601) and a spray pipe (602), wherein the water tank (601) is connected to the lower side of the gantry (2), and a plurality of rows of spray pipes (602) are connected to the lower side of the water tank (601), wherein the inner spray pipe (602) is arranged vertically downward, and the outer spray pipe (602) is arranged obliquely toward the position where the slag falls.

5. The steel slag thermal crushing and cooling equipment according to claim 4, characterized in that: A spray plate (603) is provided at the end of the spray pipe (602), and a fine water outlet is provided on the spray plate (603).

6. The steel slag thermal crushing and cooling equipment according to claim 4, characterized in that: The slag discharge assembly (7) comprises a slag storage tank (701), a slag discharge port (702), a mounting groove (703), a baffle (704) and a push plate (705); the slag storage tank (701) is connected to the gantry (2); the slag discharge port (702) is arranged at the bottom of the slag storage tank (701); the mounting groove (703) is opened on the side wall of the slag storage tank (701); the baffle (704) is slidably connected to the slag storage tank (701); the push plate (705) is connected to the baffle (704); and the push plate (705) extending to the outside of the slag storage tank (701) is connected to the push rod (509).

7. The slag thermal crushing and cooling equipment according to claim 6, characterized in that: The length of the push plate (705) is greater than the length of the mounting groove (703), and the mounting groove (703) is inclined.

8. The steel slag thermal crushing and cooling equipment according to claim 6, characterized in that: There are multiple slag outlets (702), and their positions correspond to the positions of the spray pipes (602).

9. The slag thermal crushing and cooling equipment according to claim 6, characterized in that: The bottom of the slag storage tank (701) is provided with a plurality of groups of fixed convex strips (706), the fixed convex strips (706) are in the shape of a letter "7", and the baffle (704) is provided with a plurality of groups of movable convex strips (707), the movable convex strips (707) and the fixed convex strips (706) are arranged in an alternating manner.

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