An anti-nodulation immersed water outlet

Abstract

The utility model discloses an anti-nodule immersion nozzle, including a nozzle body, which is cylindrical in design, the upper end of the nozzle body is fixedly connected with a feed bowl mouth, the lower end of the nozzle body is provided with a discharge flow channel, the interior of the nozzle body is provided with a variable diameter flow cavity, the inner wall of the variable diameter flow cavity is provided with an anti-nodule limit block, the ground surface of the discharge flow channel is fixedly connected with a diversion support block, and the side surface of the nozzle body is provided with an opening. The anti-nodule immersion nozzle is provided with an anti-nodule limit block and the nozzle body, so that when the device is working, the raw material is introduced to make the raw material flow in the variable diameter flow cavity, so that the raw material is blocked by the anti-nodule limit block when passing through the anti-nodule limit block, thereby changing the flow direction, and the blocking of a number of anti-nodule limit blocks is convenient to effectively change the movement trajectory of the raw material, and to reduce the occurrence of nodules, thereby effectively ensuring the efficiency of the raw material flow and improving the practicality of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of refractory material processing, in particular to an anti-nodulation immersed nozzle. Background Art

[0002] The submerged nozzle is a refractory sleeve for pouring that is installed at the bottom of the intermediate tank in continuous steel casting equipment and inserted below the steel liquid level of the crystallizer. The main functions of the submerged nozzle are to prevent secondary oxidation of the intermediate tank injection flow and splashing of molten steel; to prevent the mold protective slag from being drawn into the molten steel; to improve the flow state and heat flow distribution of the injection flow in the crystallizer, and thereby promote the uniform growth of the billet shell in the crystallizer, which is beneficial to the removal of gas and inclusions in the steel. Since the submerged nozzle has significant effects on improving the quality of the billet, improving working conditions, stabilizing the continuous casting operation, and preventing surface defects of the billet, both slab continuous casting and large square billet continuous casting use this nozzle for casting. The basic requirements for the material of the submerged nozzle are good resistance to molten steel dissolution, strong resistance to slag erosion and good thermal shock resistance.

[0003] The manufacturing process of the submerged nozzle is as follows: various raw materials are mixed to become a uniformly mixed composite powder, which is isostatically pressed to become a green billet of the required shape, and then sintered at high temperature to form a product with a certain strength, which is then shaped and processed into the required size. Finally, after flaw detection, it is packaged and shipped out. Since the main material of the bottom of the submerged nozzle has a certain adsorption capacity for impurities in the molten steel, as the pouring time increases, slag and nodules are easily formed at the bottom of the nozzle, and the nodules will continue to increase, resulting in a blocked flow channel for the molten steel, thereby affecting the quality of the continuous casting billet. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-nodule immersed nozzle to solve the problem raised in the above-mentioned background technology that as the pouring time increases, slag and nodules are easily formed at the bottom of the nozzle, and the nodules will continue to increase, causing the flow channel of the molten steel to be blocked, thereby affecting the quality of the continuous casting billet.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-nodule immersion nozzle, comprising a nozzle body, which is a cylindrical design, the upper end of the nozzle body is fixedly connected with a feed bowl mouth, the lower end of the nozzle body is provided with a discharge channel, the interior of the nozzle body is provided with a variable diameter flow cavity, the inner wall of the variable diameter flow cavity is provided with an anti-nodule limit block, the ground surface of the discharge channel is fixedly connected with a diversion support block, the side surface of the nozzle body is provided with an opening, and one end of the opening of the nozzle body is provided with a heating and receiving cavity, and the interior of the heating and receiving cavity is provided with a heating mechanism, which energizes the electric heating tube through a current-carrying wire to generate heat, and finally collects and dissipates the heat through a heat-conducting baffle.

[0006] Preferably, the water inlet body is connected to the feed bowl mouth, and the inner wall of the opening on the surface of the feed bowl mouth is designed to be arc-shaped.

[0007] By adopting the above technical solution, when using the device, the water inlet body is connected with the feed bowl mouth to guide the movement of the raw materials, and the arc-shaped design of the opening on the surface of the feed bowl mouth is used to reduce the flow speed of the raw materials for buffering.

[0008] Preferably, the discharge flow channel is of T-shaped design, and the cavity at the upper end of the discharge flow channel is of a truncated cone design that is narrow at the top and wide at the bottom, and the upper end of the discharge flow channel is connected to the nozzle body.

[0009] By adopting the above technical solution, when using the device, the cavity at the upper end of the discharge flow channel is designed as a truncated cone with a narrow upper part and a wide lower part, so that the discharge flow channel and the diversion support block can cooperate to accelerate the flow speed of the raw materials.

[0010] Preferably, the anti-nodule limit block is symmetrically arranged relative to the center of the nozzle body, the horizontal position of the anti-nodule limit block is staggered, and the vertical cross-section of the anti-nodule limit block is a trapezoidal design that is wide at the top and narrow at the bottom.

[0011] By adopting the above technical solution, when using the device, the trapezoidal design of the anti-nodule limiting block, which is wide at the top and narrow at the bottom, is convenient for blocking the raw material, thereby changing the flow state of the raw material and preventing the raw material from nodulating.

[0012] Preferably, the diverter support block is designed as a truncated cone with a narrow upper part and a wide lower part, and the upper end of the diverter support block is designed as an arc, and the variable diameter flow cavity is designed as a truncated cone with a wide upper part and a narrow lower part.

[0013] By adopting the above technical solution, when using the device, the narrow-upper-wide-lower-truncated cone design of the diversion support block facilitates the diversion of raw materials. At the same time, the diversion support block increases the flow speed of the raw materials, thereby accelerating the discharge and preventing nodules.

[0014] Preferably, the heating storage cavity is of an annular design, and the heating mechanism includes an electric heating tube, which is fixedly mounted on the inner wall of the heating storage cavity, a heat-conducting baffle is fixedly connected to the inner wall of the heating storage cavity, and an energized wire is provided at one end of the electric heating tube.

[0015] By adopting the above technical solution, when the device is used, the annular design of the heating receiving cavity facilitates the installation of the annular electric heating tube and the heat conducting baffle.

[0016] Preferably, the electric heating tube is of annular design, the electric heating tube is fixedly connected to the heat-conducting baffle, the heat-conducting baffle is of circular ring design, and one end of the current-carrying wire passes through the opening on the side surface of the nozzle body.

[0017] By adopting the above technical scheme, when using the present device, the electric heating tube is conducted with electricity through the energized wire, so that the temperature of the electric heating tube is increased. At the same time, the temperature of the electric heating tube will be absorbed by the heat-conducting baffle, and then the heat-conducting baffle will evenly dissipate the heat through the annular inner wall, so that the heat-conducting baffle can evenly heat the raw material in a circular shape, thereby improving the effect of the present device in heating the raw material, preventing the raw material from nodules due to cooling, and improving the practicality of the present device.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the anti-nodulation immersed nozzle:

[0019] 1. Anti-nodule limit blocks and nozzle bodies are provided, so that when the device is working, the raw materials are introduced to flow in the variable diameter flow cavity, so that the raw materials are blocked by the anti-nodule limit blocks when passing through them, thereby changing the flow direction. Through the blocking of several anti-nodule limit blocks, the movement trajectory of the raw materials is effectively changed, and the occurrence of nodules is reduced, thereby effectively ensuring the efficiency of the raw material flow and improving the practicality of the device;

[0020] 2. A discharge flow channel and a diversion support block are provided, so that when the device is working, the raw material is guided to the diversion support block through the discharge flow channel. The inclined design of the outer surface of the upper end of the diversion support block facilitates the cooperation between the diversion support block and the discharge flow channel, thereby reducing the radius of the raw material flow, thereby increasing the efficiency of the raw material flow, facilitating the discharge of the raw material and preventing the accumulation of raw materials and the formation of nodules;

[0021] 3. An electric heating tube and a heat-conducting baffle are provided. When the device is working, the electric heating tube is energized through the power-carrying wire. After the electric heating tube is heated up, the heat is collected by the heat-conducting baffle, which is convenient for the heat-conducting baffle to concentrate the heat and evenly distribute it to the raw materials, so as to reduce the temperature drop of the raw materials during the flow process, which is beneficial to reduce the occurrence of nodules and improve the anti-nodulation effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall front view structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the overall top view structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the connection between the nozzle body and the feed bowl mouth of the utility model;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the connection between the nozzle body and the discharge flow channel of the utility model;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the connection between the nozzle body and the anti-tumor limiting block of the utility model;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the electric heating tube and the heat-conducting baffle connected to the utility model.

[0028] In the figure: 1. nozzle body; 2. feed bowl; 3. discharge flow channel; 4. anti-nodulation limit block; 5. diversion support block; 6. heating storage cavity; 7. electric heating tube; 8. heat conduction baffle; 9. power-carrying wire; 10. variable diameter flow cavity. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-6 The utility model provides a technical solution: an anti-nodule immersion nozzle, comprising a nozzle body 1, a feed bowl mouth 2, a discharge flow channel 3, an anti-nodule limit block 4, a diversion support block 5, a heating and receiving cavity 6, an electric heating tube 7, a heat-conducting baffle 8, an energized wire 9 and a variable-diameter flow cavity 10. The nozzle body 1 is a cylindrical design, and the upper end of the nozzle body 1 is fixedly connected with the feed bowl mouth 2, the nozzle body 1 is connected with the feed bowl mouth 2, the inner wall of the opening on the surface of the feed bowl mouth 2 is an arc-shaped design, the discharge flow channel 3 is a T-shaped design, and the cavity at the upper end of the discharge flow channel 3 is a truncated cone design with a narrow upper part and a wide lower part, and the upper end of the discharge flow channel 3 is connected with the nozzle body 1. When using this device, first fix this device in the working position, and then receive the raw material through the feed bowl mouth 2, so that the raw material enters the variable-diameter flow cavity 10 of the nozzle body 1 and flows.

[0031] A discharge channel 3 is provided at the lower end of the nozzle body 1, and a variable diameter flow cavity 10 is provided inside the nozzle body 1. The anti-nodule limit block 4 is symmetrically arranged relative to the center of the circle of the nozzle body 1, and the horizontal position of the anti-nodule limit block 4 is staggered. The vertical cross-section of the anti-nodule limit block 4 is a trapezoidal design that is wide at the top and narrow at the bottom. The anti-nodule limit block 4 on the inner wall of the variable diameter flow cavity 10 is convenient for blocking the raw material, so that the anti-nodule limit block 4 changes the direction of the raw material movement. Through a number of anti-nodule limit blocks 4, the flow state of the raw material is conveniently changed, and the adhesion of oxide inclusions to the inner wall is reduced, which effectively solves the occurrence of nodules in the submerged nozzle during continuous casting.

[0032] The inner wall of the variable diameter flow cavity 10 is provided with an anti-nodulation limit block 4, the ground surface of the discharge channel 3 is fixedly connected with a diverter support block 5, the side surface of the nozzle body 1 is provided with an opening, and the end of the opening of the nozzle body 1 is provided with a heating and receiving cavity 6, the diverter support block 5 is a truncated cone design with a narrow upper part and a wide lower part, and the upper end of the diverter support block 5 is an arc-shaped design, and the variable diameter flow cavity 10 is a truncated cone design with a wide upper part and a narrow lower part. The raw material flows into the discharge channel 3 after passing through. Through the cooperation of the inclined inner wall of the discharge channel 3 and the truncated cone on the upper end of the diverter support block 5, it is convenient to reduce the flow cross-sectional area, thereby increasing the efficiency of the raw material flow and further preventing the raw material from nodulating.

[0033] A heating mechanism is provided inside the heating storage cavity 6, which energizes the electric heating tube 7 through the power-carrying wire 9 to generate heat, and finally collects and dissipates the heat through the heat-conducting baffle 8. The heating storage cavity 6 is annular in design, and the heating mechanism includes the electric heating tube 7, which is fixedly mounted on the inner wall of the heating storage cavity 6, and the inner wall of the heating storage cavity 6 is fixedly connected with the heat-conducting baffle 8. One end of the electric heating tube 7 is provided with a power-carrying wire 9, and the electric heating tube 7 is annular in design, and the electric heating tube 7 is fixedly connected to the heat-conducting baffle 8. The heat-conducting baffle 8 is designed as a circular ring, and one end of the power-carrying wire 9 passes through the opening on the side surface of the nozzle body 1. During operation, the anti-nodulation limit block 4 slows down the flow of the raw material, making it easy for the raw material to cool down and form nodules. The device supplies power to the electric heating tube 7 through the power-carrying wire 9, so that the electric heating tube 7 guides the heat to the heat-conducting baffle 8 after the temperature is increased, and the heat is concentrated by the heat-conducting baffle 8, and the annular heat-conducting baffle 8 evenly dissipates the heat to the raw material, thereby heating and keeping the raw material warm, thereby improving the effect of the device in preventing the raw material from forming nodules.

[0034] Working principle: When using the anti-nodule immersion nozzle, the raw material is received by the feed bowl 2, and a number of anti-nodule limit blocks 4 are used to change the flow state of the raw material to prevent nodules. The raw material passes through the discharge channel 3, and the truncated cone design of the diversion support block 5 is used to reduce the flow cross-sectional area to increase the efficiency of the raw material flow. The flow cross-sectional area is reduced, thereby increasing the efficiency of the raw material flow. The heating mechanism enables the current-carrying wire 9 to supply power to the electric heating tube 7, and the heat is generated by the electric heating tube 7 and collected by the heat-conducting baffle 8. Finally, the annular heat-conducting baffle 8 evenly heats the raw material, thereby increasing the overall practicality.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-nodulation immersion nozzle, comprising a nozzle body (1) of cylindrical design, a feed bowl (2) fixedly connected to the upper end of the nozzle body (1), and a discharge flow channel (3) opened at the lower end of the nozzle body (1), characterized in that: The nozzle body (1) is provided with a variable diameter flow cavity (10) inside, the inner wall of the variable diameter flow cavity (10) is provided with an anti-nodulation limit block (4), the ground surface of the discharge flow channel (3) is fixedly connected with a diversion support block (5), the side surface of the nozzle body (1) is provided with an opening, and one end of the opening of the nozzle body (1) is provided with a heating storage cavity (6), and a heating mechanism is provided inside the heating storage cavity (6), which energizes the electric heating tube (7) through an electric wire (9) to generate heat, and finally collects and dissipates the heat through a heat-conducting baffle (8).

2. The anti-nodulation immersion nozzle according to claim 1, characterized in that: The nozzle body (1) is connected to the feed bowl mouth (2), and the inner wall of the opening on the surface of the feed bowl mouth (2) is designed to be arc-shaped.

3. The anti-nodulation immersion nozzle according to claim 1, characterized in that: The discharge flow channel (3) is of T-shaped design, and the cavity at the upper end of the discharge flow channel (3) is of a truncated cone design that is narrow at the top and wide at the bottom, and the upper end of the discharge flow channel (3) is connected to the nozzle body (1).

4. The anti-nodulation immersion nozzle according to claim 1, characterized in that: The anti-tumor limit block (4) is symmetrically arranged relative to the center of the nozzle body (1), the horizontal position of the anti-tumor limit block (4) is staggered, and the vertical cross-section of the anti-tumor limit block (4) is a trapezoidal design that is wide at the top and narrow at the bottom.

5. The anti-nodulation immersion nozzle according to claim 1, characterized in that: The flow splitting support block (5) is designed as a truncated cone with a narrow top and a wide bottom, and the upper end of the flow splitting support block (5) is designed as an arc, and the variable diameter flow inner cavity (10) is designed as a truncated cone with a wide top and a narrow bottom.

6. The anti-nodulation immersion nozzle according to claim 1, characterized in that: The heating storage cavity (6) is of an annular design, and the heating mechanism comprises an electric heating tube (7), which is fixedly mounted on the inner wall of the heating storage cavity (6), a heat-conducting baffle (8) is fixedly connected to the inner wall of the heating storage cavity (6), and an electric conducting wire (9) is arranged at one end of the electric heating tube (7).

7. The anti-nodulation immersion nozzle according to claim 6, characterized in that: The electric heating tube (7) is of an annular design, the electric heating tube (7) is fixedly connected to the heat-conducting baffle (8), the heat-conducting baffle (8) is of a circular ring design, and one end of the power-carrying wire (9) passes through the opening on the side surface of the nozzle body (1).

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