CN210996472U

CN210996472U - Tundish sizing nozzle structure

Info

Publication number: CN210996472U
Application number: CN201921987209.6U
Authority: CN
Inventors: 朱永军; 朱银; 李晓伟
Original assignee: Shanghai Yandong New Material Technology Co ltd
Current assignee: Shanghai Yandong New Material Technology Co ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-07-14
Anticipated expiration: 2029-11-18

Abstract

The utility model discloses a middle package sizing mouth of a river structure, including mouth of a river body, mouth of a river body is including tolerating dustcoat, interior stopper stick fixed wall and the seat of shocking resistance, and tolerates four side outer wall homogeneous connections in the bottom of dustcoat and have a side leakage fluid dram, four the bottom outer wall body coupling of side leakage fluid dram has connection bracket, and forms the joint cooperation between connection bracket's bottom inner wall and the tip outer wall of the seat of shocking resistance, the inner wall middle part body coupling of the seat of shocking resistance has branch liquid awl, and all leaves the cluster groove between four side outer walls of branch liquid awl and four side inner walls of connection bracket. The utility model discloses a side leakage fluid dram replaces traditional tributary export, because the steel stream flows out from the side opening, flows the steel stream direction change in the crystallizer, changes the bevel connection entering direction into by the vertical direction, has shortened inclusion come-up distance, also can not lose too much runoff speed, is favorable to the come-up of inclusion, is favorable to improving the casting blank cleanliness factor.

Description

Tundish sizing nozzle structure

Technical Field

The utility model relates to a steel smelting technical field especially relates to a tundish sizing mouth of a river structure.

Background

The tundish is a refractory container used in steel making, and firstly receives molten steel poured from a ladle, and then the molten steel is distributed into each crystallizer through a tundish nozzle, the lower end of the tundish nozzle extends into the crystallizer, and the molten steel is cooled in the crystallizer.

The water gap that present tundish adopted has following defect: firstly, the lower part of a tundish nozzle extends into a crystallizer, molten steel is cooled in the crystallizer by electromagnetic stirring, the penetration capacity and the stirring strength of the cooling mode are realized by changing the frequency and the current of a coil, and the cooling mode is easily influenced by the fluctuation of a power grid, so that the casting blank is easily subjected to intergranular looseness and central shrinkage cavity, and the structure state of the casting blank is influenced; secondly, the tundish nozzle is of a hollow structure, and particles of non-metallic inclusions are difficult to float upwards, so that the non-metallic impurities are difficult to remove; thirdly, the temperature of the molten steel is concentrated in the middle of the water gap, which is not beneficial to the rapid crystallization of the molten steel.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a tundish fixed diameter water gap structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a middle package sizing mouth of a river structure, includes the mouth of a river body, the mouth of a river body is including tolerating dustcoat, interior stopper stick fixed wall and the seat that shocks resistance, and tolerates four side outer wall homogeneous connections in the bottom of dustcoat and have a side leakage fluid dram, four a bottom outer wall body coupling bracket of side leakage fluid dram, and forms the joint cooperation between the bottom inner wall of coupling bracket and the tip outer wall of the seat that shocks resistance, the inner wall middle part body coupling of the seat that shocks resistance has a liquid separating cone, and all leaves the cluster groove between four side outer walls of liquid separating cone and four side inner walls of coupling bracket, the inner wall in cluster groove and the inner wall homogeneous phase intercommunication of side leakage fluid dram, the bottom inner wall body coupling of side leakage.

Preferably, a circular truncated cone-shaped water gap inner diameter is reserved at the central axis of the inner wall of the inner stopper rod fixing wall and the inner wall of the tolerance outer cover, and the bottom end of the water gap inner diameter is communicated with the serial flow groove and the side liquid discharge hopper.

Preferably, the liquid separating cone is of a rectangular pyramid structure, and the liquid separating surface of the liquid separating cone is parallel to the port of the side liquid discharging hopper.

Preferably, the inner wall of the side drain funnel is L-shaped, and the bending angle of the inner wall of the side drain funnel is the same as the inclination angle of the liquid dividing surface of the liquid dividing cone.

Preferably, the spinning device comprises a sealing outer cover, an inner inclined grid plate and a fixing frame, the fixing frame is welded on the inner wall of the sealing outer cover, and the inner inclined grid plate is in annular pressing and welding at equal intervals on the outer walls of the four sides of the fixing frame.

Preferably, the shock-resistant seat comprises a seat body and an inner filling grid, and the inner filling grid is uniformly filled in the seat body.

The utility model has the advantages that:

1. the bottom end of the metering nozzle replaces a traditional branch outlet through a side liquid discharge hopper, and as steel flows flow out of the side hole, the direction of the steel flow flowing into the crystallizer is changed from the vertical direction to the inclined port entering direction, so that the floating distance of inclusions is shortened, excessive runoff rate can not be lost, the floating of the inclusions is facilitated, and the cleanliness of a casting blank is improved;

2. the bottom end of the sizing nozzle is provided with an impact-resistant seat, molten steel is divided into four strands by a liquid separating cone and is thrown into a side liquid discharging hopper, shunting and depressurization are realized, the impact of the molten steel is reduced, the impact problem on the wall of a traditional nozzle is solved, meanwhile, a self-rotating device is arranged at the bottom end of the side liquid discharging hopper, the molten steel is rotated at an initial speed when being discharged out of the hopper through self-rotating, the same steel flow direction with a crystallizer is ensured, the impact of the entering molten steel on internal crystallization molten steel is reduced, and meanwhile, the work load of electromagnetic rotation in the crystallizer is reduced.

Drawings

Fig. 1 is a schematic view of a main sectional structure of a tundish sizing nozzle structure provided by the present invention;

fig. 2 is a schematic top view of a spinning device of a tundish sizing nozzle structure according to the present invention;

fig. 3 is a schematic view of the structure of the impact-resistant seat of the tundish fixed diameter nozzle structure of the present invention.

In the figure: the device comprises a tolerance outer cover 1, an inner stopper rod fixing wall 2, a water gap inner diameter 3, a side liquid discharge hopper 4, a separating cone 5, an impact resistant seat 6, a spin machine 7, a serial flow groove 8, a sealing outer cover 9, an inner inclined grid plate 10, a fixing frame 11 and a connecting bracket 12.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1-3, a tundish fixed diameter nozzle structure, including the mouth of a river body, the mouth of a river body is including tolerating dustcoat 1, interior stopper stick fixed wall 2 and shock resistance seat 6, and tolerating dustcoat 1's four equal body connections of side leakage fluid dram 4 of bottom four side outer walls, four side leakage fluid dram 4's bottom outer wall body connections have connection bracket 12, and form the joint cooperation between connection bracket 12's bottom inner wall and the tip outer wall that shocks resistance seat 6, the inner wall middle part body connection that shocks resistance seat 6 has branch liquid awl 5, and all leave the cluster chute 8 between the four side outer walls of branch liquid awl 5 and the four side inner walls of connection bracket 12, the inner wall of cluster chute 8 and the inner wall homogeneous phase intercommunication of side leakage fluid dram 4, the bottom inner wall body connection of side leakage fluid dram 4 has from rotating device 7, interior stopper stick fixed wall 2 and tolerating dustcoat 1's inner wall axis department has remaining circular platform type structure's mouth internal diameter 3, and mouth 8, side leakage fluid dram 4 is linked together, divide liquid cone 5 to be the same, and the sealed off the slope of the grid tray is equal angle of the outer wall of the same, and the sealed oblique angle of the sealed rack is equal, and the sealed grid tray 10 that the sealed off the sealed outer wall of the sealed grid tray is filled in the sealed grid tray 10, the sealed outer wall of the sealed grid tray, the sealed outer wall of the sealed grid tray is 10, the sealed grid tray, the sealed outer wall.

The working principle is as follows: when the metering nozzle is used, the metering nozzle is arranged between a crystallizer and a tundish, molten steel enters the inner diameter 3 of the nozzle after being pumped out by a stopper rod inserted into an inner stopper rod fixing wall 2, the molten steel enters a serial flow groove 8 for speed reduction, meanwhile, the liquid steel is divided into four strands by the liquid separating cone 5 and is put into the side liquid discharging hopper 4, the bottom end of the liquid steel replaces the traditional branch outlet by the side liquid discharging hopper 4, because the steel flow flows out from the side holes, the direction of the steel flow flowing into the crystallizer is changed from the vertical direction to the inclined opening entering direction, the floating distance of inclusions is shortened, excessive runoff rate can not be lost, the flow distribution and the pressure reduction are realized, the bottom end of the side drain hopper 4 is provided with a self-rotating device 7, molten steel is rotated at an initial speed when being discharged from the hopper through self-rotation, the direction of the molten steel is ensured to be the same as the direction of the molten steel flow of the crystallizer, the impact of the molten steel entering the crystallizer on internal crystallized molten steel is reduced, and the electromagnetic rotation work load in the crystallizer is reduced.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A tundish metering nozzle structure comprises a nozzle body, and is characterized in that the nozzle body comprises a tolerant outer cover (1), an inner stopper rod fixing wall (2) and an impact resistant seat (6), the outer walls of four sides of the bottom end of the tolerant outer cover (1) are all integrally connected with side liquid discharge hoppers (4), the outer walls of the bottom ends of the four side liquid discharge hoppers (4) are integrally connected with connecting brackets (12), and the inner wall of the bottom end of the connecting bracket (12) and the outer wall of the end part of the impact-resistant seat (6) form clamping fit, the middle part of the inner wall of the impact resistant seat (6) is integrally connected with a liquid separating cone (5), and cross-flow grooves (8) are reserved between the outer walls of the four sides of the separating cone (5) and the inner walls of the four sides of the connecting bracket (12), the inner wall of the serial flow groove (8) is communicated with the inner wall of the side drain hopper (4), the inner wall of the bottom end of the side liquid discharge hopper (4) is integrally connected with a self-rotating device (7).

2. A tundish fixed diameter nozzle structure according to claim 1, wherein a nozzle inner diameter (3) with a truncated cone structure is left at the central axis of the inner wall of the inner stopper rod fixing wall (2) and the tolerance outer cover (1), and the bottom end of the nozzle inner diameter (3) is communicated with the cross flow groove (8) and the side drain hopper (4).

3. The tundish fixed diameter nozzle structure according to claim 1, wherein the separating cone (5) is a rectangular pyramid structure, and the liquid separating surface of the separating cone (5) is parallel to the end of the side drain hopper (4).

4. The tundish fixed diameter nozzle structure according to claim 1, wherein the inner wall of the side drain hopper (4) is L-shaped, and the bending angle of the inner wall of the side drain hopper (4) is the same as the inclination angle of the liquid separating surface of the liquid separating cone (5).

5. A tundish fixed diameter nozzle structure according to claim 1, wherein the spinning device (7) comprises a sealing cover (9), inner inclined grid plates (10) and a fixed frame (11), the fixed frame (11) is welded on the inner wall of the sealing cover (9), and the inner inclined grid plates (10) are in equidistant annular press-fit welding on the outer walls of four sides of the fixed frame (11).

6. A tundish metering nozzle structure according to claim 1, wherein the impact resistant seat (6) comprises a seat body and an inner filling grid, and the inner filling grid is uniformly filled in the seat body.