Assembly type tundish cover

Abstract

The utility model discloses an assembly type tundish cover, and aims to provide the assembly type tundish cover which can reduce the deformation probability of the tundish cover caused by the influence of external force. The ladle cover comprises a ladle cover frame and a refractory plate, the section shape of the ladle cover frame and the section shape of the refractory plate are both arc-shaped, the ladle cover frame is provided with a containing groove, a baking hole and a plurality of stopper holes, the refractory plate, the baking hole and the stopper holes are all arranged in the containing groove, the baking hole and the stopper holes are all communicated with the refractory plate, the refractory plate is detachably connected with the ladle cover frame, and the refractory plate is detachably connected with the ladle cover frame. Baffles and reinforcing ribs are installed in the containing groove, the baffles are symmetrically distributed at the front end and the rear end of the baking hole, and the reinforcing ribs are symmetrically distributed at the left end and the right end of the baking hole and connected with the fireproof plate. The utility model has the beneficial effects that the purpose of reducing the deformation probability of the bag cover due to the influence of external force can be achieved; the probability that the protective sleeve shakes left and right and leaves the baffle can be reduced; and the refractory slab is convenient to mount and dismount.

Description

Technical Field

[0001] The utility model relates to the technical field of tundishes, in particular to an assembled tundish cover. Background Art

[0002] The tundish is a refractory container used in short-process steelmaking. It first receives the molten steel poured from the ladle, and then distributes it to each crystallizer through the tundish water outlet. As an important basic raw material, steel has played a vital role in the economic development of countries around the world since the industrial revolution. As a container required for steelmaking, the role and development progress of the tundish cannot be underestimated.

[0003] During the use of the tundish, in order to prevent the temperature in the tundish from dropping too quickly and to protect the molten steel in the tundish from secondary oxidation during the steel pouring process, a tundish cover is added to the tundish. The structural characteristics and materials used in the tundish cover need to be tailored to the conditions of the molten steel, such as the temperature, fluidity and weight of the molten steel. The assembled tundish cover is designed for the tundish to be stored, and the force it needs to withstand should be more clearly understood.

[0004] Chinese patent authorization announcement number: CN204381349U, authorization announcement date June 10, 2015, discloses a tundish cover, including: a hyperbolic flat shell, the hyperbolic flat shell is provided with a reserved hole and an injection hole, and a plurality of anchors are provided on the bottom side; a rectangular frame, the rectangular frame is connected to the bottom of the hyperbolic flat shell, the top side is in contact with the four side edges of the hyperbolic flat shell, and forms a trough structure with the hyperbolic flat shell; and a refractory layer, the refractory layer is cast and formed inside the trough structure by refractory material, and the top side of the refractory layer is in contact with the bottom side of the hyperbolic flat shell. The disadvantage of this technical solution is that the use of the tundish cover is to subject to lateral stress in two directions under the influence of the curved shape of the hyperbolic flat shell, so as to improve the strength of the cover, so that the cover will not be easily deformed. However, if no strong fastening device is provided on the ladle cover or the refractory layer connected to the ladle cover, the ladle cover may be squeezed or pressed down by external force or the gravity of molten steel during use, thereby causing deformation, which is unsafe.

[0005] In summary, a strong fastening device can be added to the bag cover to increase the pressure and tension that the bag cover can withstand, so as to reduce the deformation of the bag cover caused by the force during use. Utility Model Content

[0006] The utility model aims to overcome the deficiency that the bag cover in the prior art is not designed with a reinforced force effect, and provides an assembled intermediate bag cover which can reduce the probability of deformation of the bag cover due to the influence of external force.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] An assembled intermediate ladle cover comprises a ladle cover frame and a refractory plate, the cross-sectional shapes of the ladle cover frame and the cross-sectional shapes of the refractory plate are both arc-shaped, a storage groove, a baking hole and a plurality of plug rod holes are provided on the ladle cover frame, the refractory plate, the baking hole and the plug rod hole are all placed in the storage groove, the baking hole and the plug rod hole are both connected to the refractory plate, the baking hole is placed at the center of the storage groove, a plurality of plug rod holes are symmetrically distributed around the baking hole, the refractory plate is detachably connected to the ladle cover frame, a baffle plate and a reinforcing rib are installed in the storage groove, a plurality of baffle plates and a plurality of reinforcing ribs are included, a plurality of baffle plates are evenly distributed from the front end to the rear end of the storage groove, the baffle plates are symmetrically distributed at the front and rear ends of the baking hole, a plurality of reinforcing ribs are symmetrically distributed at the left and right ends of the baking hole, and the reinforcing ribs are connected to the refractory plate.

[0009] With this design, the refractory plate can be installed through the ladle cover frame. The cross-sectional shape of the ladle cover frame and the cross-sectional shape of the refractory plate are both arc-shaped, which is not only convenient for covering the tundish, but also allows the molten steel in the tundish to be stably placed, so that the temperature in the tundish will not drop too quickly, and protects the molten steel in the tundish from secondary oxidation during the steel pouring process, with good protection effect. The ladle cover frame is provided with a storage groove, a baking hole and a plurality of stopper rod holes. The refractory plate, baking hole and stopper rod hole are all placed in the storage groove, thereby further enhancing the protection effect of the molten steel. The refractory plate is resistant to high temperatures, reducing the probability of deformation of the ladle cover frame, that is, the ladle cover, caused by high-temperature heating of the high-temperature molten steel. The baking hole and the stopper rod hole are commonly used structures of the tundish cover in the prior art. The baking hole is convenient for extending the argon blowing tube into the tundish, and the stopper rod hole is convenient for installing the stopper rod. In addition, baffles and reinforcing ribs are installed in the storage slot. There are several baffles and reinforcing ribs here. The baffles are evenly distributed from the front end to the rear end of the storage slot. The baffles are symmetrically distributed at the front and rear ends of the baking hole, that is, the left and right ends of the cover frame can be well connected through the baffles, which increases the stress of the cover in the left and right directions. The reinforcing ribs are symmetrically distributed at the left and right ends of the baking hole, and the reinforcing ribs are connected to the refractory board, which means that the reinforcing ribs can be distributed in the front and rear directions of the cover frame, which increases the stress of the cover in the front and rear directions. In this way, with the cooperation of the baffles, reinforcing ribs, the cross-sectional shape of the cover frame and the cross-sectional shape of the refractory board, the force that the cover can withstand is increased, which means that the purpose of reducing the probability of deformation of the cover due to external force is achieved.

[0010] Preferably, the reinforcing ribs include reinforcing rib 1, reinforcing rib 2, reinforcing rib 3, reinforcing rib 4 and reinforcing rib 5, and the reinforcing rib 1, reinforcing rib 3 and reinforcing rib 5 are symmetrically distributed at the left and right ends of the stopper rod hole, the front end of the reinforcing rib 1 and the front end of the reinforcing rib 3 are connected to the fire-resistant board, the rear end of the reinforcing rib 1 and the rear end of the reinforcing rib 5 are connected to the baffle, the position of the rear end of the reinforcing rib 3 corresponds to the position of the front end of the stopper rod hole, the position of the front end of the reinforcing rib 5 corresponds to the position of the rear end of the stopper rod hole, the reinforcing rib 2 and the reinforcing rib 4 are symmetrically distributed at the left and right ends of the baking hole, the front and rear ends of the reinforcing rib 2 are respectively connected to two baffles, one end of the reinforcing rib 4 is connected to the baffle, and the position of the other end of the reinforcing rib 4 corresponds to the position of the baking hole. This design divides the reinforcing ribs 1, 2, 3, 4 and 5 into the reinforcing ribs. Here, the reinforcing ribs 1, 3 and 5 are symmetrically distributed at the left and right ends of the plugging rod hole, that is, they mainly bear the force around the plugging rod hole. The front end of the reinforcing rib 1 and the front end of the reinforcing rib 3 are connected to the fireproof board, the rear end of the reinforcing rib 1 and the rear end of the reinforcing rib 5 are connected to the baffle, and the position of the rear end of the reinforcing rib 3 is connected to the plugging rod hole and the rear end of the reinforcing rib 5 is connected to the baffle, the position of the rear end of the reinforcing rib 3 corresponds to the position of the front end of the plugging rod hole, and the position of the front end of the reinforcing rib 5 corresponds to the position of the rear end of the plugging rod hole. In this way, the left and right forces and the front and rear forces felt by the plugging rod hole can be borne by the cooperation of the reinforcing ribs 1, 3, 5, the baffle and the fireproof board to reduce the deformation caused by the force around the plugging rod hole. Similarly, reinforcing ribs 2 and 4 are symmetrically distributed at the left and right ends of the baking hole, the front and rear ends of reinforcing rib 2 are respectively connected to the two baffles, one end of reinforcing rib 4 is connected to the baffle, and the position of the other end corresponds to the position of the baking hole. In this way, the left and right forces and the front and rear forces felt at the baking hole can be borne by the cooperation of reinforcing ribs 2, rib 4, baffles and refractory plates to withstand external forces and reduce deformation caused by the force around the baking hole.

[0011] Preferably, the position of the rear end of the reinforcing rib three corresponds to the position of the front end of the reinforcing rib five, and the reinforcing rib four is symmetrically distributed front and back with the baking hole as the center. In this design, by making the position of the rear end of the reinforcing rib three correspond to the position of the front end of the reinforcing rib five, and the reinforcing rib four is symmetrically distributed front and back with the baking hole as the center, the front and back direction of the plug hole can be under the action of the reinforcing rib three and the reinforcing ribs to withstand external forces. And the front and back direction of the baking hole is under the action of the reinforcing rib four corresponding to the front and back position to withstand external forces.

[0012] Preferably, the baffle is covered with a protective cover, the protective cover matches the baffle, and the protective cover is detachably connected to the baffle. In this design, the protective cover is covered on the baffle, and the protective cover matches the baffle, that is, the protective cover can be covered on the baffle, thereby reducing the damage to the baffle caused by the contact of foreign objects, and the protective cover is detachably connected to the baffle, that is, the protective cover can be installed and removed in time, which is convenient for the inspection, maintenance or replacement of the baffle.

[0013] Preferably, the protective sleeve is provided with a plurality of slots, the width of the slots is greater than the width of the reinforcing ribs, and the positions of the slots correspond to the positions of the reinforcing ribs. This design is achieved by providing a plurality of slots on the protective sleeve, where the width of the slots is greater than the width of the reinforcing ribs, and the positions of the slots correspond to the positions of the reinforcing ribs, that is, when the protective sleeve is fitted onto the baffle, the reinforcing ribs can be smoothly fitted into the slots, even if the width of the slots is greater than the width of the reinforcing ribs, that is, it can reduce the probability of the protective sleeve shaking left and right and thus leaving the baffle.

[0014] Preferably, the fireproof board is equipped with a plurality of screws, and the cover frame is provided with a plurality of screw holes, the screws correspond to the screw holes one by one, and the plurality of screw holes are evenly distributed in the storage slot. In this design, a plurality of screws are installed on the fireproof board, and the cover frame is provided with a plurality of screw holes, the screws correspond to the screw holes one by one, and the plurality of screw holes are evenly distributed in the storage slot, so that the fireproof board and the cover frame can be well connected through the cooperation of the screws and the screw holes, and the disassembly of the fireproof board is also convenient.

[0015] The beneficial effects of the utility model are: the purpose of reducing the probability of deformation of the cover due to external force can be achieved; the probability of the protective cover shaking left and right and leaving the baffle can be reduced; and the installation and disassembly of the fire-resistant board are convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the working state of the protective cover of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the utility model.

[0019] In the figure: 1. cover frame, 2. fireproof board, 3. baffle, 4. protective cover, 5. reinforcing ribs, 6. screws, 7. baking hole, 8. plug rod hole, 9. slot, 10. storage slot. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0021] like Figure 1 and Figure 2 In the illustrated implementation case, an assembled intermediate ladle cover comprises a cover frame 1 and a refractory plate 2, the cross-sectional shapes of the cover frame 1 and the refractory plate 2 are both arc-shaped, a storage groove 10, a baking hole 7 and a plurality of plug rod holes 8 are provided on the cover frame 1, the refractory plate 2, the baking hole 7 and the plug rod hole 8 are all placed in the storage groove 10, the baking hole 7 and the plug rod hole 8 are all connected to the refractory plate 2, the baking hole 7 is placed at the center of the storage groove 10, a plurality of plug rod holes 8 are symmetrically distributed around the baking hole 7, the refractory plate 2 is detachably connected to the cover frame 1, a baffle 3 and a reinforcing rib 5 are installed in the storage groove 10, a plurality of baffles 3 and a plurality of reinforcing ribs 5 are included, a plurality of baffles 3 are evenly distributed from the front end to the rear end of the storage groove 10, the baffles 3 are symmetrically distributed at the front and rear ends of the baking hole 7, a plurality of reinforcing ribs 5 are symmetrically distributed at the left and right ends of the baking hole 7, and the reinforcing rib 5 is connected to the refractory plate 2.

[0022] like Figure 1 and Figure 3 As shown, the reinforcing rib 5 includes reinforcing rib 1, reinforcing rib 2, reinforcing rib 3, reinforcing rib 4 and reinforcing rib 5. Reinforcing rib 1, reinforcing rib 3 and reinforcing rib 5 are symmetrically distributed at the left and right ends of the plug rod hole 8. The front end of reinforcing rib 1 and the front end of reinforcing rib 3 are both connected to the fireproof board 2, the rear end of reinforcing rib 1 and the rear end of reinforcing rib 5 are both connected to the baffle 3, the position of the rear end of reinforcing rib 3 corresponds to the position of the front end of the plug rod hole 8, the position of the front end of reinforcing rib 5 corresponds to the position of the rear end of the plug rod hole 8, reinforcing rib 2 and reinforcing rib 4 are symmetrically distributed at the left and right ends of the baking hole 7, the front and rear ends of reinforcing rib 2 are respectively connected to the two baffles 3, one end of reinforcing rib 4 is connected to the baffle 3, and the position of the other end of reinforcing rib 4 corresponds to the position of the baking hole 7. The position of the rear end of reinforcing rib 3 corresponds to the position of the front end of reinforcing rib 5, and reinforcing rib 4 is symmetrically distributed front and back with the baking hole 7 as the center. The baffle plate 3 is provided with a protective sleeve 4, which matches the baffle plate 3 and is detachably connected to the baffle plate 3. The protective sleeve 4 is provided with a plurality of slots 9, the width of the slots 9 is greater than the width of the reinforcing ribs 5, and the positions of the slots 9 correspond to the positions of the reinforcing ribs 5. The fireproof board 2 is provided with a plurality of screws 6, and the cover frame 1 is provided with a plurality of screw holes, the screws 6 correspond to the screw holes one by one, and the plurality of screw holes are evenly distributed in the storage slot 10.

[0023] First, fit the refractory board 2 against the cover frame 1. The cross-sectional shapes of the cover frame 1 and the cross-sectional shapes of the refractory board 2 are both arc-shaped, and a storage groove 10, a baking hole 7 and a plurality of plug rod holes 8 are provided on the cover frame 1. The baking holes 7 and the plug rod holes 8 are all placed in the storage groove 10, so that the refractory board 2 can be placed against the storage groove 10 and inserted into the storage groove 10. Of course, the refractory board 2 also needs to be provided with a socket. When the refractory board 2 is inserted into the storage groove 10, the baking holes 7 and the plug rod holes are 8 can be connected with the jack, of course, the baking hole 7 and the plug rod hole 8 are also separated, and the baking hole 7 and the plug rod hole 8 are not connected to each other, so the screw 6 on the refractory board 2 is controlled to match the screw hole on the cover frame 1, so that the refractory board 2 and the cover frame 1 can be smoothly connected. The screw hole is provided with thread one, and the screw 6 is provided with thread two, and the thread two matches the thread one, so the connection and disassembly work of the refractory board 2 and the cover frame 1 can be carried out smoothly, so as to carry out the maintenance or replacement of the refractory board 2.

[0024] Then you can see clearly that the baffle 3 and the reinforcing rib 5 are installed on the fireproof board 2, and the baffle 3 and the reinforcing rib 5 here include several baffles 3, and the several baffles 3 are evenly distributed from the front end to the rear end of the storage groove 10. The baffle 3 is symmetrically distributed at the front and rear ends of the baking hole 7, and the reinforcing rib 5 includes reinforcing rib 1, reinforcing rib 2, reinforcing rib 3, reinforcing rib 4 and reinforcing rib 5. Reinforcing rib 1, reinforcing rib 3 and reinforcing rib 5 are symmetrically distributed at the left and right ends of the plug rod hole 8. The front end of reinforcing rib 1 and the front end of reinforcing rib 3 are connected to the fireproof board 2, and the rear end of reinforcing rib 1 and the rear end of reinforcing rib 5 are connected to the baffle 3. The position of the rear end of reinforcing rib 3 corresponds to the position of the front end of the plug rod hole 8, the position of the front end of reinforcing rib 5 corresponds to the position of the rear end of the plug rod hole 8, and the position of the rear end of reinforcing rib 3 corresponds to the position of the The front and rear ends of the five front ends correspond to each other. At the same time, the two reinforcement ribs and the four reinforcement ribs are symmetrically distributed at the left and right ends of the baking hole 7. The front and rear ends of the two reinforcement ribs are respectively connected to the two baffles 3. One end of the four reinforcement ribs is connected to the baffle 3. The position of the other end of the four reinforcement ribs corresponds to the position of the baking hole 7. The four reinforcement ribs are symmetrically distributed front and back with the baking hole 7 as the center. Then, the one reinforcement rib, the three reinforcement ribs and the five reinforcement ribs cooperate with the refractory board 2 and the baffle 3 to withstand the left and right forces and the front and back forces felt at the plug rod hole 8, and the cooperation of the two reinforcement ribs, the four reinforcement ribs and the baffle 3 can withstand the left and right forces and the front and back forces felt at the baking hole 7. In this way, the force that the baking hole 7 and the plug rod hole 8 can withstand is enhanced, so as to reduce the probability of deformation due to the influence of force. Finally, the protective sleeve 4 can be put on the baffle 3. The protective sleeve 4 matches the baffle 3. The position of the slot 9 on the protective sleeve 4 corresponds to the position of the reinforcing rib 5. That is, when the protective sleeve 4 is put on, the reinforcing rib 5 can be inserted into the slot 9. The width of the slot 9 is greater than the width of the reinforcing rib 5. The structural design is convenient for the reinforcing rib 5 to be smoothly inserted into the slot 9 when the protective sleeve 4 is put on. Even if the width of the slot 9 is greater than the width of the reinforcing rib 5, it can also reduce the probability of the protective sleeve 4 shaking left and right, thereby leaving the baffle 3. The protective sleeve 4 and the baffle 3 here can be connected by screws to facilitate the installation and removal of the protective sleeve 4, which is convenient for the inspection, maintenance or replacement of the baffle 3.

[0025] In this way, the tundish cover can be used on the tundish, and the tundish and the tundish cover are determined according to the amount of molten steel that needs to be injected, that is, the data are all budgeted in advance, so such an assembled tundish and assembled tundish cover can be used smoothly. The cross-sectional shape of the cover frame 1 and the cross-sectional shape of the refractory board 2 here are both arc-shaped, which means that the demand for sintering materials close to the wall of the tundish is relatively small, and some castables can be saved when the maximum height is the same. And this cover, with the cooperation of the baffle 3, the reinforcing rib 5, the cross-sectional shape of the cover frame 1 and the cross-sectional shape of the refractory board 2, increases the force that the cover can withstand, that is, it achieves the purpose of reducing the probability of deformation of the cover due to external force.

[0026] The materials of the refractory plate 2, the baffle 3, the protective cover 4, the reinforcing rib 5, and even the screw 6 can all be made of tantalum-hafnium carbide alloy which is strong, durable, and has excellent heat resistance. This allows the high-temperature molten steel to be stably placed in the tundish, and the tundish cover will not be deformed by the high temperature.

Claims

1. An assembled tundish cover, characterized in that: The invention comprises a covering frame (1) and a refractory plate (2), wherein the cross-sectional shapes of the covering frame (1) and the cross-sectional shapes of the refractory plate (2) are both arc-shaped, the covering frame (1) is provided with a storage groove (10), a baking hole (7) and a plurality of plugging holes (8), the refractory plate (2), the baking hole (7) and the plugging hole (8) are all placed in the storing groove (10), the baking hole (7) and the plugging hole (8) are both connected to the refractory plate (2), the baking hole (7) is placed at the center of the storing groove (10), and the plurality of plugging holes (8) are placed in the storing groove (10). The refractory plate (2) is symmetrically distributed with the baking hole (7) as the center, and is detachably connected to the cover frame (1). A baffle (3) and a reinforcing rib (5) are installed in the storage groove (10). The baffle (3) and the reinforcing rib (5) each include a plurality of baffles (3), and the plurality of baffles (3) are evenly distributed from the front end to the rear end of the storage groove (10). The baffles (3) are symmetrically distributed at the front and rear ends of the baking hole (7), and the plurality of reinforcing ribs (5) are symmetrically distributed at the left and right ends of the baking hole (7). The reinforcing ribs (5) are connected to the refractory plate (2).

2. The assembled tundish cover according to claim 1 is characterized in that: The reinforcing ribs (5) include reinforcing rib 1, reinforcing rib 2, reinforcing rib 3, reinforcing rib 4 and reinforcing rib 5. The reinforcing ribs 1, rib 3 and rib 5 are symmetrically distributed at the left and right ends of the plug rod hole (8). The front end of the reinforcing rib 1 and the front end of the reinforcing rib 3 are connected to the fireproof board (2). The rear end of the reinforcing rib 1 and the rear end of the reinforcing rib 5 are connected to the baffle (3). The position of the rear end of the reinforcing rib 3 corresponds to the position of the front end of the plug rod hole (8). The position of the front end of the reinforcing rib 5 corresponds to the position of the rear end of the plug rod hole (8). The reinforcing rib 2 and the reinforcing rib 4 are symmetrically distributed at the left and right ends of the baking hole (7). The front and rear ends of the reinforcing rib 2 are respectively connected to the two baffles (3). One end of the reinforcing rib 4 is connected to the baffle (3), and the position of the other end of the reinforcing rib 4 corresponds to the position of the baking hole (7).

3. The assembled tundish cover according to claim 2 is characterized in that: The position of the rear end of the third reinforcing rib corresponds front to back to the position of the front end of the fifth reinforcing rib, and the fourth reinforcing rib is symmetrically distributed front to back with the baking hole (7) as the center.

4. The assembled tundish cover according to claim 1 is characterized in that: A protective sleeve (4) is sleeved on the baffle (3); the protective sleeve (4) matches the baffle (3); and the protective sleeve (4) and the baffle (3) are detachably connected.

5. The assembled tundish cover according to claim 4 is characterized in that: The protective sleeve (4) is provided with a plurality of slots (9), the width of the slots (9) being greater than the width of the reinforcing ribs (5), and the positions of the slots (9) corresponding to the positions of the reinforcing ribs (5) in a vertical manner.

6. The assembled tundish cover according to claim 1 is characterized in that: A plurality of screws (6) are installed on the fireproof board (2), and a plurality of screw holes are provided on the cover frame (1). The screws (6) correspond to the screw holes one by one, and the plurality of screw holes are evenly distributed in the storage groove (10).

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