Blocking device and rectangular crystallizer

Abstract

The utility model discloses a blocking device and a rectangular crystallizer, and relates to the technical field of slab continuous casting, the blocking device comprises a blocking assembly, the blocking assembly comprises at least one blocking plate located above the liquid level of molten steel, and when the number of the blocking plates is larger than one, the at least two blocking plates are detachably connected in sequence in the narrow edge direction of a feeding port; the plate face, close to the molten steel, of at least one blocking plate forms a blocking face used for blocking the molten steel in the crystallizer from splashing, and the size of the blocking face in the narrow edge direction of the feeding port is smaller than or equal to the size of the narrow edge of the feeding port. The two lap joint plates are fixed to the upper end of the blocking plate or the upper end of the blocking face, and the blocking plate or the blocking face is in lap joint with the upper edge of the feeding port through the lap joint plates. The moving assembly is connected with the lap joint plate and used for moving the lap joint plate and the blocking assembly. And the production requirements of different widths of the on-site crystallizer feed port are met, the reserve of the prepared materials is reduced, and the production cost is saved.

Description

Technical Field

[0001] This application belongs to the technical field of slab continuous casting, and particularly relates to a blocking device and a rectangular mold. Background Art

[0002] The steel blocking plate is used to block the splashing molten steel of the rectangular mold. At present, the used steel blocking plates are mainly made of integral wooden rectangular plates. In the production of continuous casting slabs, a continuous casting machine corresponds to multiple molds with different narrow-side width specifications. Therefore, different specifications of steel blocking plates need to be equipped, which increases the on-site material reserve, cost, and management cost. Secondly, when a large amount of a certain type of steel billet is continuously produced, the inventory of other specifications of steel blocking plates will be overstocked, which not only occupies a large amount of inventory space but also affects the flexibility and efficiency of the production plan, and is not conducive to cost reduction and efficiency improvement. Finally, this type of steel blocking plate has limited effect in preventing molten steel at the feeding port. The splashing steel flowers cause great damage to the thermocouple on the narrow side of the mold and also have an adverse impact on the mold corner gap, which not only affects the product quality but also increases the workload of maintenance and repair. In severe cases, it will lead to the leakage of molten steel during the start of casting. Summary of the Utility Model

[0003] The purpose of this application is to provide a blocking device and a rectangular mold, aiming to solve at least to a certain extent the technical problems of the large number of size specifications of the steel blocking plate, inconvenient use, and poor splash-proof effect.

[0004] To solve the above technical problems, this application adopts the following technical solutions:

[0005] In the first aspect of the embodiment of this application, a blocking device is provided for blocking the splashing molten steel at the feeding port of a rectangular mold. The blocking device includes: a blocking component, including at least one blocking plate located above the molten steel level. When the number of blocking plates is greater than one, at least two of the blocking plates are detachably connected in sequence along the narrow side direction of the feeding port; the plate surface of at least one of the blocking plates close to the molten steel forms a blocking surface for blocking the splashing molten steel in the mold, and the size of the blocking surface along the narrow side direction of the feeding port is less than or equal to the size of the narrow side of the feeding port; two overlapping plates are fixed to the upper end of the blocking plate or the blocking surface, and the blocking plate or the blocking surface is overlapped on the upper edge of the feeding port through the overlapping plates; a moving component is connected to the overlapping plates and is used to move the overlapping plates and the blocking component.

[0006] In some embodiments, the blocking assembly includes arc-shaped plates formed by bending rectangular plates. The number of the arc-shaped plates is the same as that of the blocking plates. The concave surfaces of the arc-shaped plates face the molten steel. The arc-shaped plates are connected to the corresponding baffle plates on the side close to the molten steel. When there are at least two arc-shaped plates, at least two of the arc-shaped plates are butt-jointed in sequence along the narrow side direction of the feed inlet; the concave surface of at least one arc-shaped plate forms a blocking surface for blocking the splashing of the molten steel in the mold; or, the blocking plate is an arc-shaped plate with a concave surface facing the molten steel.

[0007] In some embodiments, when there are at least two arc-shaped plates, the adjacent two arc-shaped plates are sealed with sealant.

[0008] In some embodiments, the blocking assembly further includes blocking side plates with the same number as the blocking plates. The ends of the blocking side plates are perpendicularly connected to the ends of the blocking plates.

[0009] In some embodiments, when the number of the blocking plates is greater than one, the blocking plates are fixedly connected to each other through connecting plates.

[0010] In some embodiments, threaded holes are provided at the upper ends of the blocking plates. The connecting plates and the overlapping plates are both connected to the blocking plates through bolts.

[0011] In some embodiments, the moving assembly includes: a connecting rod, one end of which is fixed to the upper end of the overlapping plate through a pressing plate; a handle, which is connected to the other end of the connecting rod.

[0012] In some embodiments, the connecting rod is a telescopic rod.

[0013] In some embodiments, the blocking assembly includes a first blocking plate and a second blocking plate. The width of the second blocking plate is smaller than that of the first blocking plate. The blocking assembly is formed by splicing one first blocking plate and at least one second blocking plate.

[0014] In the second aspect of the embodiments of the present application, a rectangular mold is provided. The tundish conveys molten steel to the feed inlet through a feed pipe, and the blocking device as described above is arranged at the narrow side of the feed inlet.

[0015] It can be seen from the above technical solutions that the present application has at least the following advantages and positive effects:

[0016] A blocking device in the present application forms blocking devices with different size specifications by splicing a plurality of blocking plates, meets the production requirements of different widths of the feed inlets of on-site molds, reduces the reserve of prepared materials, saves production costs, and can effectively block the molten steel at the feed inlet by arranging arc-shaped plates, avoiding the molten steel and cold materials from rushing out of the mold.

[0017] A rectangular mold in the present application forms a blocking device with different size specifications by arranging multiple blocking plates, meeting the production requirements of different widths of the mold feed inlet on site, reducing the reserve of prepared materials, saving production costs, and effectively blocking the molten steel at the feed inlet by arranging an arc plate to prevent the molten steel and cold materials from flushing out of the mold. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of a blocking device in an embodiment of the present application;

[0020] Figure 2 It is an installation schematic diagram of a blocking device in an embodiment of the present application

[0021] Figure 3 It is a schematic structural diagram of a single shielding component of a blocking device in an embodiment of the present application.

[0022] The description of the reference numerals is as follows: 100, blocking component; 110, blocking side plate; 120, blocking plate; 130, arc plate; 200, overlapping plate; 300, connecting plate; 410, connecting rod; 420, pressing plate; 430, handle; 500, feed inlet; 600, tundish. Detailed Embodiment

[0023] In order to enable those skilled in the art in the technical field to which the present application belongs to understand the present application more clearly, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts belong to the scope of protection of the present application.

[0024] Please refer to Figure 1 and Figure 2 .

[0025] Figure 1 It is a schematic structural diagram of a blocking device in an embodiment of the present application, Figure 2It is a schematic installation diagram of a blocking device in an embodiment of the present application. As shown in the figure, a rectangular feed inlet 500 is provided at the upper end of the crystallizer. When the tundish 600 conveys molten steel to the feed inlet 500 through a feed pipe, molten steel splashing will occur. This device is used to block the molten steel splashing from the feed inlet 500 of the rectangular crystallizer. The blocking device includes: a blocking component 100, which includes at least one baffle 120 located above the molten steel level. When the number of the baffles 120 is greater than one, at least two of the baffles 120 are detachably connected in sequence along the narrow side direction of the feed inlet 500; a blocking surface for blocking the molten steel splashing in the crystallizer is formed on the plate surface of at least one of the baffles 120 close to the molten steel, and the size of the blocking surface along the narrow side direction of the feed inlet 500 is less than or equal to the size of the narrow side of the feed inlet 500; two overlapping plates 200 are fixed to the upper end of the baffle 120 or the blocking surface, and the baffle 120 or the blocking surface is overlapped on the upper edge of the feed inlet 500 through the overlapping plates 200; a moving component is connected to the overlapping plates 200 and is used to move the overlapping plates 200 and the blocking component 100. By arranging a plurality of baffles 120 to be spliced to form blocking devices with different size specifications, the production requirements of different widths of the feed inlet 500 of the on-site crystallizer are met, the reserve of spare materials is reduced, and the production cost is saved. By arranging the arc-shaped plate 130, the molten steel at the feed inlet 500 can be effectively blocked, and the molten steel and cold materials are prevented from rushing out of the crystallizer.

[0026] In some embodiments, the blocking component 100 includes an arc-shaped plate 130 formed by bending a rectangular plate. The number of the arc-shaped plates 130 is the same as the number of the baffles 120. The concave surface of the arc-shaped plate 130 faces the molten steel. The arc-shaped plate 130 is connected to the corresponding baffle on the side close to the molten steel. When there are at least two arc-shaped plates 130, at least two of the arc-shaped plates 130 are butted in sequence along the narrow side direction of the feed inlet 500; a blocking surface for blocking the molten steel splashing in the crystallizer is formed on the concave surface of at least one of the arc-shaped plates 130; or, the baffle 120 is an arc-shaped plate 130 with a concave surface facing the molten steel.

[0027] In some embodiments, when there are at least two arc-shaped plates 130, adjacent two of the arc-shaped plates 130 are sealed with sealant.

[0028] Please refer to Figure 3 , Figure 3 It is a schematic structural diagram of a single shielding component of a blocking device in an embodiment of the present application.

[0029] In some embodiments, the blocking assembly 100 further includes blocking side plates 110 having the same number as the blocking plates 120, and the ends of the blocking side plates 110 are perpendicularly connected to the ends of the blocking plates 120. Specifically, the blocking side plates 110 are in abutment with the inner wall of the narrow side of the feed inlet 500.

[0030] In some embodiments, when the number of the blocking plates is greater than one, the blocking plates 120 are fixedly connected to each other through a connecting plate 300.

[0031] In other embodiments, the connecting plate 300 is fixed at the connection of the blocking side plates 110 to connect the blocking plates 120 to each other.

[0032] In some embodiments, threaded holes are provided at the upper ends of the blocking plates 120, and the connecting plate 300 and the overlapping plate 200 are both connected to the blocking plates 120 through bolts.

[0033] In some embodiments, the moving assembly includes: a connecting rod 410, one end of which is fixed to the upper end of the overlapping plate 200 through a pressing plate 420; and a handle 430, which is connected to the other end of the connecting rod 410.

[0034] In some embodiments, the connecting rod 410 is a telescopic rod.

[0035] In some embodiments, the blocking assembly 100 includes a first blocking plate and a second blocking plate, the width of the second blocking plate is smaller than that of the first blocking plate, and the blocking assembly 100 is formed by splicing one first blocking plate and at least one second blocking plate. By splicing the second blocking plates with different sizes from the first blocking plate, the inner wall of the feed inlet 500 can be better fitted.

[0036] In a second aspect of the embodiments of the present application, a rectangular mold is provided. Molten steel is transported from a tundish 600 to a feed inlet 500 through a feed pipe, and the blocking device as described above is provided at the narrow side of the feed inlet 500. By arranging a plurality of blocking plates 120 to splice and form blocking devices with different size specifications, the production requirements of different widths of the feed inlet 500 of the on-site mold can be met, the reserve of prepared materials can be reduced, and the production cost can be saved. By arranging the arc-shaped plate 130, the molten steel at the feed inlet 500 can be effectively blocked, and the molten steel and cold materials can be prevented from flushing out of the mold.

[0037] It can be seen from the above technical solutions that the present application has at least the following advantages and positive effects:

[0038] A blocking device in the present application forms blocking devices of different size specifications by splicing a plurality of blocking plates, meeting the production requirements of different widths of the feeding ports of on-site crystallizers, reducing the reserve of prepared materials, saving production costs, and effectively blocking the molten steel at the feeding port by arranging arc-shaped plates to prevent the molten steel and cold materials from flushing out of the crystallizer.

[0039] A rectangular crystallizer in the present application forms blocking devices of different size specifications by splicing a plurality of blocking plates, meeting the production requirements of different widths of the feeding ports of on-site crystallizers, reducing the reserve of prepared materials, saving production costs, and effectively blocking the molten steel at the feeding port by arranging arc-shaped plates to prevent the molten steel and cold materials from flushing out of the crystallizer.

[0040] Unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0041] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0042] In the present application, unless otherwise clearly specified and defined, the terms "connection", "fixation", etc. shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0043] In addition, descriptions such as "first" and "second" in this application are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality of" means two or more, unless otherwise specifically defined.

[0044] Although the embodiments of this application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this application. The scope of this application is defined by the claims and their equivalents.

Claims

1. A blocking device for blocking the molten steel splashed at the feeding port of a rectangular mold, characterized in that The blocking device includes: A blocking assembly, including at least one blocking plate located above the molten steel surface. When the number of the blocking plates is greater than one, at least two of the blocking plates are detachably connected in sequence along the narrow side direction of the feeding port; the plate surface of at least one of the blocking plates close to the molten steel forms a blocking surface for blocking the splashing of the molten steel in the mold, and the dimension of the blocking surface along the narrow side direction of the feeding port is less than or equal to the dimension of the narrow side of the feeding port. Two overlapping plates, fixed to the upper end of the blocking plate or the blocking surface, and the blocking plate or the blocking surface is overlapped on the upper edge of the feeding port through the overlapping plates. A moving assembly, connected to the overlapping plates, for moving the overlapping plates and the blocking assembly.

2. The blocking device according to claim 1, wherein: The blocking assembly includes an arc-shaped plate formed by bending a rectangular plate. The number of the arc-shaped plates is the same as the number of the blocking plates. The concave surface of the arc-shaped plate faces the molten steel. The arc-shaped plate is connected to the corresponding baffle plate on the side close to the molten steel. When there are at least two arc-shaped plates, at least two of the arc-shaped plates are butt-jointed in sequence along the narrow side direction of the feeding port; the concave surface of at least one of the arc-shaped plates forms a blocking surface for blocking the splashing of the molten steel in the mold; or, The blocking plate is an arc-shaped plate with the concave surface facing the molten steel.

3. The blocking device according to claim 2, characterized in that: When there are at least two arc-shaped plates, adjacent two arc-shaped plates are sealed with sealant.

4. The blocking device according to any one of claims 1 to 3, characterized in that, The blocking assembly further includes blocking side plates with the same number as the blocking plates, and the ends of the blocking side plates are perpendicularly connected to the ends of the blocking plates.

5. The blocking device according to claim 4, characterized in that, When the number of the blocking plates is greater than one, each of the blocking plates is fixedly connected through a connecting plate.

6. The blocking device according to claim 5, characterized in that, Threaded holes are provided at the upper end of the blocking plate, and both the connecting plate and the overlapping plate are connected to the blocking plate through bolts.

7. The blocking device according to claim 1, characterized in that, The moving assembly includes: A connecting rod, one end of which is fixed to the upper end of the overlapping plate through a pressing plate; A grip, connected to the other end of the connecting rod.

8. The blocking device according to claim 7, wherein The connecting rod is a telescopic rod.

9. The blocking device according to claim 1, wherein The blocking assembly includes a first blocking plate and a second blocking plate. The width of the second blocking plate is smaller than that of the first blocking plate, and the blocking assembly is formed by splicing one first blocking plate and at least one second blocking plate.

10. A rectangular mold, wherein a rectangular feed inlet is arranged at the upper end of the mold, and molten steel is conveyed from a tundish to the feed inlet through a feed pipe, characterized in that, The blocking device as described in any one of claims 1 to 9 is provided at the narrow side of the feeding port.

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