Continuous casting ladle bell jar type sleeve

Abstract

The utility model relates to the technical field of large ladle bell-jar-shaped sleeves, in particular to a continuous casting large ladle bell-jar-shaped sleeve which comprises a sleeve body, a long water opening for improving the pouring effect is formed in the inner side of the sleeve body, a one-way valve used for exhausting is fixedly connected to the outer side of the sleeve body, and a connecting ring is fixedly connected to the position, at the output end of the long water opening, of the sleeve body. A connecting ring is fixedly connected to the upper end of the base, a fixing rod used for fixing is fixedly connected to the outer side of the connecting ring, the lower end of the connecting ring is fixedly connected with a base used for lifting and stabilizing, and a fixing groove used for guiding and positioning is formed in the upper end of the base. According to the bell jar type sleeve for the continuous casting ladle, the flowing direction and speed of molten steel can be effectively controlled through the special shape of the bell jar type sleeve, when the molten steel flows out of the ladle, the inner wall of the bell jar can guide the molten steel to form a stable flow beam, and therefore the phenomena of splashing and turbulent flow of the molten steel are reduced, and the bell jar type sleeve for the continuous casting ladle is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a ladle bell type sleeve technical field, especially to a continuous casting ladle bell type sleeve. BACKGROUND

[0002] The secondary oxidation of molten steel can adversely affect the production of clean steel, especially for high-purity steel, if not properly controlled, it can cause steel grade flaw detection unqualified and other problems, seriously affecting the quality of steel grade improvement, especially for the high-end steel such as Nanjing steel plate pipeline steel, nickel-based steel, the molten steel purity is high after the refining process, but due to the ladle - tundish - crystallizer protection is not good, resulting in molten steel secondary oxidation, reflected in the inclusion content of steel increases, [O], [N] content is high.

[0003] During the casting process of thick slab, due to the improper protection of casting measures, the molten steel will be oxidized by contacting with air, thereby polluting the molten steel and reducing the purity of the molten steel, which affects the quality of the final product.

[0004] Therefore, the existing problems are studied and improved, and a continuous casting ladle bell type sleeve is provided, which has reasonable structure design, high stability, and considers all aspects of application, aiming to solve the problems and improve the practical value through the technology. INVENTION CONTENTS

[0005] The utility model discloses a bell type design makes in molten steel transmission process, can utilize its special shape to control the flow direction and speed of molten steel effectively, when molten steel flows out from ladle, the inner wall of bell can guide molten steel to form relatively stable flow beam, thereby reducing the splashing and turbulence phenomenon of molten steel, realize a kind of continuous casting ladle bell type sleeve.

[0006] In order to realize the above-mentioned purpose, the utility model discloses a continuous casting ladle bell type sleeve, which comprises a sleeve, a long nozzle for improving the filling effect is arranged in the inner side of the sleeve, a one-way valve for exhaust is fixedly connected to the outer side of the sleeve, a connecting ring is fixedly connected to the output end of the long nozzle, a fixing rod for fixing is fixedly connected to the outer side of the connecting ring, a base for improving stability is fixedly connected to the lower end of the connecting ring, a fixing groove for guiding and positioning is arranged in the upper end of the base, a connecting block for improving movement stability is movably connected in the fixing groove, a baffle for improving sealing performance is fixedly connected to one side of the connecting block, and a storage groove for storage is arranged in one side of the baffle.

[0007] Preferably, the upper end of the sleeve is a feeding port, the lower end of the feeding port is a straight pipe, the lower end of the straight pipe is a long nozzle, the long nozzle is in the shape of a trumpet mouth, and the inner diameter of the long nozzle increases away from the outlet.

[0008] Preferably, the one-way valves are arranged outside the sleeve, and two groups of the one-way valves are arranged to extend to the inside through the shroud, and the two groups of the one-way valves are made of high-temperature resistant material.

[0009] Preferably, the connecting ring is fixedly connected to the lower end of the sleeve, a through hole is arranged in the inside of the connecting ring, the outer diameter of the connecting ring is matched with the size of the through hole in the inside of the base, the inner diameter of the through hole is matched with the size of the output end of the shroud, and two groups of the fixed rods are fixedly connected to the outside of the connecting ring, and the two groups of the fixed rods are equal in size.

[0010] Preferably, the base is arranged at the lower end of the sleeve, two groups of the fixed grooves are arranged at the outside of the base, the two groups of the fixed grooves extend to one side at the bottom position, and the inner diameters of the two groups of the fixed grooves are matched with the outer diameters of the two groups of the fixed rods.

[0011] Preferably, the connecting blocks are movably connected to the inside of the fixed grooves, and the two groups of the connecting blocks are arranged with the grooves in the inside, and the sizes of the grooves are matched with the outer diameters of the fixed rods.

[0012] Preferably, the baffle is fixedly connected to one side of the connecting block, the baffle is arranged in the receiving groove, the inner size of the receiving groove is matched with the baffle, and the receiving groove is also arranged at the opposite side of the baffle.

[0013] The utility model has the advantages that when the fixed rod enters the inside of the fixed groove, if the fixed rod does not enter the middle groove of the connecting block, the fixed rod cannot rotate, the sleeve and the base cannot be connected, and the baffle is pulled out synchronously when the fixed rod moves, the gap between the fixed grooves is blocked, the sealing performance during connection is further improved, and the design of the bell-shaped cover can effectively control the flow direction and speed of the molten steel during the transmission of the molten steel, the inner wall of the bell-shaped cover can guide the molten steel to form a relatively stable flow, and the splashing and turbulence of the molten steel are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The utility model provides a kind of overall appearance of continuous casting ladle bell cover sleeve;

[0015] Figure 2 The utility model provides a kind of cross-sectional view of continuous casting ladle bell cover sleeve;

[0016] Figure 3 The utility model provides a kind of cross-sectional view of continuous casting ladle bell cover sleeve;

[0017] Figure 4 The utility model provides a kind of cross-sectional view of continuous casting ladle bell cover sleeve;

[0018] Figure 5 It is the enlarged view of the A of the continuous casting ladle bell cover sleeve.

[0019] Legend:

[0020] 1, sleeve; 2, long nozzle; 3, check valve; 4, connecting ring; 5, fixed rod; 6, base; 7, fixed groove; 8, connecting block; 9, baffle; 10, storage groove. Specific implementation

[0021] 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 belong to the scope of protection of the utility model.

[0022] In the description of the utility model, it should be explained that the directions or position relations indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting" and "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0023] Reference Figures 1-5 The utility model provides an embodiment: a continuous casting ladle bell cover sleeve, including sleeve 1, the long nozzle 2 of lifting perfusion effect is set up in the inside of sleeve 1, the check valve 3 for exhausting is fixedly connected with the outside of sleeve 1, the connecting ring 4 for fixed connection is fixedly connected with the output end of long nozzle 2 in sleeve 1, the fixed rod 5 for fixing is fixedly connected with the outside of connecting ring 4, the base 6 for lifting stability is fixedly connected with the lower end of connecting ring 4, the fixed groove 7 for guiding positioning is set up in the upper end of base 6, the connecting block 8 of lifting movement stability is movably connected in the inside of fixed groove 7, the baffle 9 for lifting sealing property is fixedly connected with one side of connecting block 8, the storage groove 10 for storage is set up in one side of baffle 9.

[0024] In an optional embodiment: the upper end of the sleeve 1 is a feeding port, the lower end of the feeding port is a straight pipe, the lower end of the straight pipe is a long nozzle 2, the long nozzle 2 is in the shape of a trumpet, and the inner cavity diameter of the long nozzle 2 increases at a distance from the outlet, the lower end of the sleeve 1 is in the shape of a trumpet, the inner cavity diameter of the trumpet-shaped long nozzle 2 increases at a distance from the outlet, similar to the shape of a trumpet, the increased volume can accommodate hot air to achieve immersion pouring, thereby avoiding secondary pollution of the molten steel and the involvement of covering agents during the change of the ladle, and the design of the bell-shaped type can effectively control the flow direction and speed of the molten steel during the transmission of the molten steel by using the special shape. When the molten steel flows out of the ladle, the inner wall of the bell can guide the molten steel to form a relatively stable flow beam, thereby reducing the splashing and turbulent phenomena of the molten steel.

[0025] In an optional embodiment: the one-way valve 3 is arranged on the outside of the sleeve 1, the number of the one-way valve 3 is two groups, and the two groups of one-way valves 3 extend to the inside through the long nozzle 2, the two groups of one-way valves 3 are made of high-temperature resistant materials, so that the air in the pipe is discharged through the one-way valve 3 during pouring, thereby preventing excessive hot air from causing subsequent quality problems, and the one-way valve 3 only discharges and does not enter, thereby preventing air from entering and causing oxidation of the molten steel.

[0026] In an optional embodiment: the connecting ring 4 is fixedly connected to the lower end of the sleeve 1, the connecting ring 4 has a through hole in the inside, the inner diameter of the through hole matches the size of the output end of the long nozzle 2, and the outer diameter of the connecting ring 4 matches the size of the inner through hole of the base 6, the two groups of fixed rods 5 are fixedly connected to the outside of the connecting ring 4, the two groups of fixed rods 5 are equal in size, and when the sleeve 1 is connected to the base 6 through the connecting ring 4, the inner diameter of the connecting ring 4 matches the inner diameter of the base 6, so that the isolation effect is further improved during connection, thereby preventing the molten steel from being oxidized during the conveying process.

[0027] In an optional embodiment: the base 6 is arranged at the lower end of the sleeve 1, two groups of fixed grooves 7 are arranged on the outside of the base 6, the two groups of fixed grooves 7 extend to one side at the bottom position, and the inner diameters of the two groups of fixed grooves 7 match the outer diameters of the two groups of fixed rods 5, the base 6 is arranged at the connection between the tundish and the sleeve 1, and the fixed rod 5 needs to enter the inside of the fixed groove 7 during connection, and the fixed rod 5 is sent to the end of the fixed groove 7 by rotating the sleeve 1, so that the sleeve 1 can be fixed, thereby making the connection between them more stable and preventing leakage during the flow of the molten steel.

[0028] In an alternative embodiment: the connecting block 8 is movably connected inside the fixed slot 7, and two sets of connecting block 8 are provided with recesses inside, the size of which is consistent with the outer diameter of the fixed rod 5, when the fixed rod 5 enters the fixed slot 7, if it does not enter the recess in the middle of the connecting block 8, it cannot be rotated, so that the sleeve 1 cannot be connected with the base 6, and at the same time, the fixed rod 5 will drive the connecting block 8 to move synchronously, and the connecting block 8 will pull the baffle 9 to extend synchronously, thereby blocking the gap between the fixed slots 7, thereby further improving the sealing performance during connection.

[0029] In an alternative embodiment: the baffle 9 is fixedly connected to one side of the connecting block 8, and the baffle 9 is located inside the receiving groove 10, and the inner size of the receiving groove 10 is consistent with that of the baffle 9, and the receiving groove 10 is also provided on the opposite side of the receiving groove 9, and the receiving groove 10 is consistent with the baffle 9, so that when the baffle 9 enters the receiving groove 10, the sealing performance is better, and the baffle 9 is prevented from being limited from moving.

[0030] Working principle and process: the worker connects the sleeve 1 with the base 6 through the connecting ring 4 when pouring, and when the connecting ring 4 is connected with the base 6, the two sets of fixed rods 5 enter the fixed slot 7, and when the fixed rod 5 enters the fixed slot 7 and descends, it enters the empty slot inside the connecting block 8, and then the sleeve 1 is rotated, which drives the two sets of fixed rods 5 to rotate synchronously, and when the fixed rod 5 moves, it drives the connecting block 8 to move synchronously, so that the connecting block 8 pulls out the baffle 9 to seal the gap, and when the molten steel flows in the sleeve 1, the excess heat generated by the molten steel will be discharged through the two sets of one-way valves 3.

[0031] Finally, it should be pointed out that: the above only describes the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions described in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, shall be included in the protection scope of the present application.

Claims

1. A continuous casting tundish bell-type sleeve, comprising a sleeve (1), characterized in that: The sleeve (1) is provided with a long nozzle (2) inside for improving the pouring effect, the sleeve (1) is fixedly connected with a one-way valve (3) outside for exhausting, the sleeve (1) is fixedly connected with a connecting ring (4) at the output end of the long nozzle (2), the connecting ring (4) is fixedly connected with a fixing rod (5) outside for fixing, the connecting ring (4) is fixedly connected with a base (6) at the lower end for improving stability, the base (6) is provided with a fixing groove (7) at the upper end for guiding and positioning, the fixing groove (7) is movably connected with a connecting block (8) inside for improving movement stability, the connecting block (8) is fixedly connected with a baffle (9) on one side for improving sealing performance, and the baffle (9) is provided with a receiving groove (10) on one side for receiving.

2. A continuous casting tundish bell type sleeve according to claim 1, characterized in that: The sleeve (1) is provided with a feeding port at the upper end, a straight-through pipe at the lower end of the feeding port, and a long nozzle (2) at the lower end of the straight-through pipe, wherein the long nozzle (2) is in the shape of a bell mouth, and the inner diameter of the long nozzle (2) increases at a distance from the outlet.

3. A continuous casting tundish bell type bushing according to claim 1, characterized in that: The one-way valve (3) is arranged outside the sleeve (1) and is provided in two groups, and the two groups of one-way valves (3) extend to the inside through the long nozzle (2), wherein the two groups of one-way valves (3) are made of high-temperature-resistant materials.

4. A continuous casting tundish bell bushing according to claim 1, characterized in that: The connecting ring (4) is fixedly connected to the lower end of the sleeve (1), and a through hole is formed in the connecting ring (4), wherein the inner diameter of the through hole matches the size of the output end of the long nozzle (2), and the outer diameter of the connecting ring (4) matches the size of the through hole in the base (6), and two groups of fixing rods (5) are fixedly connected to the outer side of the connecting ring (4), wherein the two groups of fixing rods (5) are equal in size.

5. A continuous casting tundish bell bushing according to claim 1, characterized in that: The base (6) is arranged at the lower end of the sleeve (1), and two groups of fixing grooves (7) are formed in the outer side, wherein the two groups of fixing grooves (7) extend to one side at the bottom position, and the inner diameters of the two groups of fixing grooves (7) match the outer diameters of the two groups of fixing rods (5).

6. A continuous casting tundish bell bushing according to claim 1, characterized in that: The connecting block (8) is movably connected inside the fixing groove (7) and is provided in two groups, wherein recesses are formed in the interiors of the two groups of connecting blocks (8), and the sizes of the recesses match the outer diameters of the fixing rods (5).

7. A continuous casting tundish bell bushing according to claim 1, characterized in that: The baffle (9) is fixedly connected to one side of the connecting block (8), and the baffle (9) is arranged inside the receiving groove (10), wherein the inner size of the receiving groove (10) matches the baffle (9), and the receiving groove (10) is also formed on the opposite side of the baffle (9).

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