Combined long nozzle

Abstract

The utility model relates to the technical field of steelmaking continuous casting, in particular to a combined type long nozzle which comprises a long nozzle pipe and a lower butt joint assembly, a bell and spigot is arranged at the top end of the long nozzle pipe, a water outlet portion is arranged at the bottom end of the long nozzle pipe, a plurality of liquid outlet holes are formed in the outer side wall of the water outlet portion at equal intervals, and the lower butt joint assembly comprises a lower cover plate. According to the utility model, through the arrangement of the lower butt-joint assembly, when the long nozzle pipe begins to guide the molten steel downwards, the butt-joint piece is in contact with and blocks the inner wall of the flaring part, so that the molten steel can only flow downwards through the receiving cavity, the ladle filler sand is filtered through the molten steel, and the situation that the ladle filler sand enters a ladle below is reduced; the crystallization influence of the stuffing sand on the steel ladle is reduced, the molten steel diffuses outwards through the liquid outlet hole after passing through the receiving cavity and flows into the steel ladle, the lower butt-joint assembly can be detached from the water outlet part subsequently, and blocking to follow-up flowing of the molten steel is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to continuous casting technology field of steelmaking, specifically is a combined long nozzle. BACKGROUND

[0002] Continuous casting is continuous casting steel, and it is an advanced technology of directly pouring steel into shape, the ladle containing refined molten steel is transported to the rotary table, the rotary table is rotated to the pouring position, the molten steel is poured into the tundish, the tundish is used for distributing the molten steel to each crystallizer through the nozzle, and the drainage sand is added into the molten steel for drainage when the ladle is poured, the direct continuous casting of the drainage sand affects the quality, at present, the long nozzle itself is not easy to filter the drainage sand in the molten steel, the crystallinity of the molten steel is affected, and the filtering assembly cannot be flexibly adjusted. SUMMARY

[0003] The utility model discloses a combined long nozzle, which solves the problems in the background technology.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A combined long nozzle comprises:

[0006] A long nozzle pipe is provided with a socket at the top end, and a water outlet portion is arranged at the bottom end of the long nozzle pipe, a plurality of liquid outlet holes are equidistantly arranged on the outer side wall of the water outlet portion;

[0007] A lower butt joint assembly comprises a lower cover plate, which is used for clamping at the bottom end of the long nozzle pipe and plugging the bottom end of the long nozzle pipe, a butt joint piece is installed above the lower cover plate, a receiving cavity is fixedly installed in the butt joint piece, the receiving cavity is used for trapping drainage sand, and a filter plate is arranged above the receiving cavity in the butt joint piece.

[0008] Further, an expanding portion is arranged above the water outlet portion at the bottom end of the long nozzle pipe, the inner wall of the expanding portion is in the shape of a circular truncated cone, and the top end outer side wall of the butt joint piece is matched with the inner wall of the expanding portion.

[0009] Further, a plugging seat is fixedly connected to the middle position of the inner bottom surface of the lower cover plate, support columns are fixedly connected to the both sides of the bottom end of the butt joint piece, and the plugging seat is used for plugging the bottom end of the water outlet portion.

[0010] Further, the top end inner wall of the butt joint piece converges to the middle from bottom to top.

[0011] Further, a plurality of lower wedge blocks are equidistantly fixedly connected to the outer side wall of the bottom end of the water outlet portion, and upper wedge blocks are equidistantly fixedly connected to the ring-shaped inner side wall of the lower cover plate.

[0012] Further in: one end of the lower wedge block is provided with a protruding part, the top end of the plugging seat is conical, the outer diameter of the bottom end of the plugging seat is the same as the inner diameter of the top end of the water outlet part, and the bending radius of the inner side of the plurality of upper wedge blocks is greater than the radius of the outer side wall of the bottom end of the water outlet part.

[0013] Further in: the outer side wall of the lower cover plate is equidistantly provided with a plurality of guide holes.

[0014] Further in: the outer side wall of the lower cover plate is equidistantly provided with a plurality of guide holes.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. By the setting of the lower butt joint assembly, when the long nozzle pipe starts to guide the molten steel downward, the butt joint contacts and blocks the inner wall of the flared part, so that the molten steel can only flow downward through the receiving cavity, thereby filtering the drainage sand by the molten steel, reducing the drainage sand into the lower ladle, reducing the crystallization influence of the drainage sand on the ladle, and after the molten steel passes through the receiving cavity, it is diffused outward through the liquid outlet hole and flows into the ladle, and the lower butt joint assembly can be removed from the water outlet part, thereby removing the drainage sand and the receiving cavity, and reducing the blockage of the subsequent molten steel flow.

[0017] 2. By the setting of the flared part and the butt joint, the butt joint is conveniently moved upward and attached to the inner wall of the flared part during installation, and the friction between the butt joint and the inner wall of the flared part is reduced, and the bottom end inner wall of the butt joint converges to the middle, so that when the lower cover plate is removed, the impact of the molten steel on the filter plate is reduced, thereby reducing the drainage sand in the butt joint being washed out by the molten steel when the lower cover plate is removed, and facilitating the preservation of the drainage sand in the filter plate.

[0018] 3. By the setting of the plugging seat, the top end of the plugging seat is conical, the outer diameter of the bottom end of the plugging seat is the same as the inner diameter of the top end of the water outlet part, and the bending radius of the inner side of the plurality of upper wedge blocks is greater than the radius of the outer side wall of the bottom end of the water outlet part, the lower cover plate is conveniently sleeved on the bottom end of the water outlet part and moves upward with the rotation of the lower cover plate, the conical setting of the plugging seat makes the lower cover plate centered, the plugging seat blocks the bottom end of the water outlet part, and the butt joint of the lower cover plate and the bottom end of the long nozzle pipe is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 is the overall structure schematic diagram of the utility model;

[0020] Fig. 2 is the structure schematic diagram of the long nozzle pipe in the utility model;

[0021] Fig. 3 is the sectional structure schematic diagram of the water outlet part in the utility model;

[0022] Fig. 4 is a long nozzle pipe bottom structure schematic diagram in the utility model;

[0023] Fig. 5 is a lower butt joint assembly structure schematic diagram in the utility model.

[0024] In the drawing: 100, long nozzle pipe; 110, socket; 120, flared portion; 130, water outlet portion; 131, liquid outlet hole; 140, lower wedge block; 141, protruding portion; 200, lower butt joint assembly; 210, lower cover plate; 211, lead-out hole; 220, upper wedge block; 230, plugging seat; 240, support column; 250, butt joint piece; 251, filter plate; 260, receiving cavity; 270, fixing lug. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0026] Please refer to Figs. 1-5 In the embodiments of the utility model, a combined long nozzle comprises a long nozzle pipe 100 and a lower butt joint assembly 200. The top end of the long nozzle pipe 100 is provided with a socket 110. The bottom end of the long nozzle pipe 100 is provided with a water outlet portion 130. Multiple liquid outlet holes 131 are equidistantly formed in the outer side wall of the water outlet portion 130. The lower butt joint assembly 200 comprises a lower cover plate 210. The lower cover plate 210 is used for being clamped at the bottom end position of the long nozzle pipe 100 and plugging the bottom end of the long nozzle pipe 100. A butt joint piece 250 is installed above the lower cover plate 210. A receiving cavity 260 is fixedly installed inside the butt joint piece 250. The receiving cavity 260 is used for intercepting drainage sand. A filter plate 251 is arranged above the receiving cavity 260 inside the butt joint piece 250.

[0027] Specifically, when the long nozzle pipe 100 starts to guide the molten steel downward, the butt joint piece 250 contacts and plugs the inner wall of the flared portion 120, so that the molten steel can only flow downward through the receiving cavity 260, thereby filtering the drainage sand through the molten steel, reducing the drainage sand into the lower ladle, reducing the crystallization influence of the drainage sand on the ladle, and the molten steel flows out to the ladle through the liquid outlet hole 131 after passing through the receiving cavity 260. The lower butt joint assembly 200 can be subsequently removed from the water outlet portion 130, so as to remove the drainage sand and the receiving cavity 260, thereby reducing the blockage of the subsequent molten steel flow.

[0028] Embodiment one

[0029] As Figs. 3-5 shown in the embodiment, the bottom end of the long nozzle pipe 100 is provided with a flared portion 120 at the upper position of the water outlet portion 130, the inner wall of the flared portion 120 is in the shape of a circular truncated cone, the top end outer wall of the butt joint piece 250 fits the inner wall of the flared portion 120, the inner bottom surface of the lower cover plate 210 is fixedly connected with a blocking seat 230 at the middle position, the blocking seat 230 is fixedly connected with support columns 240 at both sides of the bottom end of the butt joint piece 250, the blocking seat 230 is used to block the bottom end of the water outlet portion 130, and the top end inner wall of the butt joint piece 250 converges to the middle from bottom to top.

[0030] In the embodiment, the circular truncated cone of the flared portion 120 and the top end outer wall of the butt joint piece 250 facilitates the butt joint piece 250 to move up and fit the inner wall of the flared portion 120 during installation, and reduces the friction between the butt joint piece 250 and the inner wall of the flared portion 120, the bottom end inner wall of the butt joint piece 250 converges to the middle, which reduces the impact of the molten steel on the filter plate 251 when the lower cover plate 210 is removed, thereby reducing the molten steel from flushing the drainage sand in the butt joint piece 250 when the lower cover plate 210 is removed, and facilitating the preservation of the drainage sand in the filter plate 251.

[0031] As Figs. 4-5 shown in the embodiment, the bottom end outer wall of the water outlet portion 130 is fixedly connected with a plurality of lower wedge blocks 140 at equal intervals, the ring-shaped inner wall of the lower cover plate 210 is fixedly connected with upper wedge blocks 220 at equal intervals, one end of the lower wedge block 140 is provided with a protruding portion 141, the protruding portion 141 avoids the over-rotation of the lower cover plate 210 when the lower cover plate 210 is rotatably clamped on the water outlet portion 130, the top end of the blocking seat 230 is conical, the bottom end outer diameter of the blocking seat 230 is the same as the top end inner diameter of the water outlet portion 130, and the bending radius of the inner side of the plurality of upper wedge blocks 220 is greater than the radius of the bottom end outer wall of the water outlet portion 130, which facilitates the lower cover plate 210 to be sleeved on the bottom end of the water outlet portion 130, and the lower cover plate 210 moves up by rotation, the conical arrangement of the blocking seat 230 makes the lower cover plate 210 centered, the blocking seat 230 blocks the bottom end of the water outlet portion 130, a plurality of guide holes 211 are provided in the outer wall of the lower cover plate 210 at equal intervals, and the outer wall of the lower cover plate 210 is fixedly connected with fixed ears 270 at both sides. The molten steel remaining in the lower cover plate 210 flows out through the guide holes 211 when the lower cover plate 210 is removed, which reduces the remaining molten steel in the lower cover plate 210, and the fixed ears 270 facilitate the rotation and movement of the lower cover plate 210 by tools in the external environment.

[0032] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0033] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. A combined shroud, characterized in that, The utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the outflow part (130) of the outflow part (130) outside wall equidistance is provided with a plurality of liquid outlet (131), and the utility model relates to a long shuikong tube (100) bottom end position is provided with the outflow part (130) of the long shuikong tube (100) bottom end position is provided with the ​ ​ 2. A combined shroud as claimed in claim 1, wherein ​ 3. A combined shroud as claimed in claim 2, wherein ​ 4. A combined shroud as claimed in claim 3, wherein ​ 5. The combined shroud as defined in claim 3, wherein ​ 6. A combined shroud as claimed in claim 5, wherein ​ 7. A combined shroud as claimed in claim 5, wherein ​ 8. The combined shroud as defined in claim 5, wherein ​

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