CN218425576U

CN218425576U - Tundish dry material baking and vibrating device

Info

Publication number: CN218425576U
Application number: CN202221443604.XU
Authority: CN
Inventors: 王艳丽; 崔新华; 古海云
Original assignee: Hebei Xinda Iron and Steel Group Co Ltd
Current assignee: Hebei Xinda Iron and Steel Group Co Ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2023-02-03
Anticipated expiration: 2032-06-09

Abstract

The utility model belongs to the technical field of steel making, in particular to a tundish dry material baking and vibrating device, which comprises a tundish cladding and a mould positioned in the tundish cladding, wherein a gap for accommodating dry materials is formed between the tundish cladding and the mould; the mould comprises a mould outer shell and a mould inner shell positioned in the mould outer shell, wherein a heat channel is formed between the outer peripheral wall of the mould inner shell and the inner peripheral wall of the mould outer shell, and the heat channel comprises an annular combustion channel positioned on the periphery of the mould inner shell and a smoke discharge channel positioned at the lower part of the mould inner shell; the circumference has arranged the burning pipeline of a plurality of downwardly extending in the annular combustion passageway, has seted up a plurality of burning spout on the burning pipeline, and the jet direction of burning spout is towards the mould shell. The utility model discloses a set up heat channel in the mould, the heat that makes the burning spout on the combustion duct spray out can closely contact with the dry-type material uniformly, reaches better stoving effect, makes the dry-type material reach higher hardening strength in the short time.

Description

Tundish dry material baking and vibrating device

Technical Field

The utility model belongs to the technical field of the steelmaking, specifically be a pouring basket dry-type material toasts vibrator.

Background

The continuous casting process of a steel plant in an iron and steel enterprise generally uses a tundish to contain molten steel for transferring and pouring the molten steel, a high-temperature resistant refractory material called dry material is used in the tundish, the construction of the dry material is generally carried out by using a fixed mould, the mould plays a role in fixing the dry material and also plays a role in vibration, and meanwhile, after the construction and the vibration are finished, a baking nozzle is arranged at the central part of the mould to send heat into the centre of the mould (the inner part of the mould is hollow) to play a role in baking the dry material at the periphery of the mould, so that the dry material is hardened to have strength.

In the prior art, a general dry material is baked after construction is finished, the center of a mould is hollow, 3-5 baking burners are arranged at the upper part of the mould, heat is sent into the inner hollow area of the mould through the baking burners, and the heat is transferred to the dry material through a side wall steel structure of the mould, so that the baking purpose of the dry material is achieved, the baking mode adopts blast furnace gas to burn and convey the heat, and the baking process has the following defects:

firstly, the method comprises the following steps: the burner is arranged at the central part of the mould, the burning heat can reach the steel structure of the mould after going down through the hollow area of the mould, and the loss is large when the heat is transferred to the dry material;

secondly, the method comprises the following steps: the burner adopts a common burner, oxygen combustion supporting or air combustion supporting is generally adopted, the length of flame is 200-400 mm, the height of a mould is generally 800-1200 mm, the heat of the flame reaches the lower part (bottom) of the mould less, and the heat can be increased only by prolonging the baking time;

thirdly, the method comprises the following steps: the whole baking time of the mould is 4-8 hours, in winter, because the moisture in the coal gas is more, the pressure is unstable, the baking temperature is unstable, the baking quality is unstable, after the mould is started after the baking is finished, the dry material has insufficient strength, the side wall collapses, and the bottom has no strength, so that the cost of the baking material and the construction time and cost are increased.

Fourthly: in order to increase the bottom baking effect, the use amount of coal gas can only be increased for baking, so that the pressure in the mould is increased, the concentration of the coal gas exceeds the standard, and potential safety hazards exist;

fifth: after baking, the clamping fixture needs to be cooled for 4-5 hours to be lifted out due to expansion of the clamping fixture, and the tundish can be baked online for use, so that time is wasted, and particularly when the tundish is used in quick change, an insufficient jiong surface exists in the tundish; if the mold is early, the gap between the mold and the dry material is small, and the dry material is damaged.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one technical problem among the above-mentioned background art, the utility model provides a vibration device is toasted to middle package dry-type material through set up heat channel in the mould, makes the heat that the burning spout on the burning pipeline jetted out can closely contact with the dry-type material uniformly, reaches better toasting effect, makes the dry-type material reach higher hardening strength in the short time.

The utility model adopts the following technical scheme: a dry material baking and vibrating device for a tundish comprises a tundish shell and a mould positioned in the tundish shell, wherein a gap for accommodating a dry material is formed between the tundish shell and the mould;

the mould comprises a mould outer shell and a mould inner shell positioned in the mould outer shell, wherein a heat channel is formed between the outer peripheral wall of the mould inner shell and the inner peripheral wall of the mould outer shell, and the heat channel comprises an annular combustion channel positioned on the periphery of the mould inner shell and a smoke discharge channel positioned at the lower part of the mould inner shell; the circumference has arranged the burning pipeline of a plurality of downwardly extending in the annular combustion passageway, has seted up a plurality of burning spout on the burning pipeline, and the jet direction of burning spout is towards the mould shell.

Further, gas pipeline and air conduit have been arranged to the top of mould, and gas pipeline and air conduit communicate with a plurality of combustion line respectively, and gas pipeline is connected with the coal gas trunk line, is equipped with first valve on the coal gas trunk line, and air conduit is connected with the air trunk line, is equipped with the second valve on the air trunk line.

Furthermore, the middle part of the clamping fixture inner shell is provided with at least two smoke exhaust pipelines which vertically run through the clamping fixture inner shell, one end of each smoke exhaust pipeline is communicated with the smoke exhaust channel, and the other end of each smoke exhaust pipeline is communicated with the outside.

Furthermore, an exhaust fan used for assisting the exhaust of smoke of the smoke exhaust pipeline is further arranged on the inner shell of the clamping fixture.

Further, the clamping fixture inner shell, the clamping fixture outer shell and the combustion pipeline are connected through steel structure welding.

Furthermore, a supporting base for supporting the inner shell of the clamping fixture is arranged at the bottom of the inner shell of the clamping fixture.

Furthermore, a plurality of vibration motors for compacting the dry materials are arranged on the top surface of the mould.

Furthermore, two rows of combustion nozzles are arranged along the circumferential direction of the combustion pipeline, and each row of combustion nozzles are arranged in an array along the length direction of the combustion pipeline; the two rows of combustion nozzles are arranged on the combustion pipeline at an angle of 45 degrees, and the two rows of combustion nozzles are arranged in a staggered manner.

Furthermore, the aperture of each combustion nozzle is 6-8mm, and the distance between two adjacent combustion nozzles in each row is 80-110mm.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) The utility model discloses a pouring basket dry-type material toasts vibrator forms heat channel between the periphery wall of mould inner shell and the interior perisporium of mould shell, makes the heat that the burning spout on the burning pipeline jetted out can closely contact with the dry-type material uniformly, reaches better toasting effect, makes the dry-type material reach higher hardening strength in the short time.

(2) The utility model discloses a heat circulation that vibrations device is toasted to middle package dry-type material toasts to the fume emission passageway of the lower part of mould inner shell to discharge through the exhaust pipe at mould inner shell center, at the in-process that the heat passed from the bottom, can more effectual dry-type material of toasting the bottom, make the dry-type material of bottom absorb the heat fast, reach higher sclerosis intensity in the short time.

(3) The utility model discloses a pouring basket dry-type material toasts vibrator can only supply cold wind to the heat passageway after toasting to cool off the mould rapidly and make its cold shrink, for rapid move the mould provide convenience, guaranteed the timely supply of pouring basket.

(4) The utility model discloses a middle package dry-type material toasts vibrator's exhaust pipe sets up the central point at the mould, and the emission of coal gas is more concentrated, has eliminated the excessive potential safety hazard of coal gas.

Drawings

In order to clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the dry material baking and vibrating device of the tundish of the present invention;

FIG. 2 is a top view of the mold of the dry material baking vibrator of the tundish of the present invention;

FIG. 3 is a view showing the structure of the combustion pipe of the dry material baking and vibrating device for the tundish of the present invention;

wherein: 1-tundish cladding, 2-mould, 21-mould outer shell, 22-mould inner shell, 23-heat channel, 231-annular combustion channel, 232-flue gas discharge channel, 24-steel structure, 3-combustion pipeline, 31-combustion nozzle, 4-gas pipeline, 5-air pipeline, 6-smoke exhaust pipeline, 7-vibration motor and 8-dry material.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present application, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The present invention will be discussed in detail with reference to fig. 1 to 3 and specific embodiments.

As shown in fig. 1-3, the utility model provides a dry material baking and vibrating device for a tundish, which comprises a tundish cover shell 1 and a mould 2 positioned in the tundish cover shell 1, wherein a gap for accommodating the dry material is formed between the tundish cover shell 1 and the mould 2; the mould 2 comprises a mould outer shell 21 and a mould inner shell 22 positioned in the mould outer shell 21, a heat channel 23 is formed between the outer peripheral wall of the mould inner shell 22 and the inner peripheral wall of the mould outer shell 21, the heat channel 23 comprises an annular combustion channel 231 positioned around the mould inner shell 22 and a smoke discharge channel 232 positioned at the lower part of the mould inner shell 22, the annular combustion channel 231 is communicated with the smoke discharge channel 232, the annular combustion channel 231 completely covers the inner wall of the dry material, and the smoke discharge channel 232 completely covers the bottom wall of the dry material; circumferential arrangement has the burning pipeline 3 of a plurality of downwardly extending in annular burning passageway 231, has seted up a plurality of burning spout 31 on the burning pipeline 3, and the injection direction of burning spout 31 is towards mould shell 21, and then makes the heat transmit fast to the lateral wall of dry-type material on, the heat transmits downwards to flue gas emission passageway 232 in simultaneously, toasts the diapire of dry-type material.

By adopting the heat channel 23 and the combustion pipeline 3, the heat sprayed from the combustion nozzle 31 on the combustion pipeline 3 can uniformly and quickly contact with the dry material in a short distance, the time for transferring the heat to the dry material is shortened, meanwhile, the receiving temperature of the dry material is higher, the dry material can reach higher hardening strength in a short time, the baking time of the dry material is saved by about 50-60%, the fuel utilization cost is also reduced, and the quick production organization is ensured.

Specifically, a gas pipeline 4 and an air pipeline 5 are arranged above the mould 2, the gas pipeline 4 and the air pipeline 5 are fixed around the mould 2 through a steel structure support, the gas pipeline 4 and the air pipeline 5 are respectively communicated with a plurality of combustion pipelines 3, a mixture of fuel and air is arranged in the combustion pipelines 3, the gas pipeline 4 is connected to a gas main pipeline, a first valve is arranged on the gas main pipeline and controls the gas supply condition on the gas pipeline, the air pipeline 5 is connected to the air main pipeline, a second valve is arranged on the air main pipeline and controls the air supply condition in the air pipeline; after the dry material is baked, cold air can be supplied into the heat channel through the air pipeline independently, the mould is cooled rapidly, the mould is cooled and shrunk, the dry material is not damaged after the mould is started, and the construction quality of the dry material is guaranteed.

Specifically, the middle part of the inner mould shell 22 is provided with at least two smoke exhaust pipes 6 which vertically penetrate through the inner mould shell, one end of each smoke exhaust pipe 6 is communicated with the smoke exhaust channel 232, and the other end of each smoke exhaust pipe 6 is communicated with the outside; in the process that the flue gas flows to the flue gas discharge channel 232 through the annular combustion channel 231, heat is rapidly transferred, rapid baking of dry materials at the bottom of the tundish is guaranteed, baking quality is good, the arrangement of the smoke exhaust pipeline 6 enables the discharge of coal gas to be concentrated, and the potential safety hazard of coal gas overflow is eliminated.

Specifically, the inner casing 22 of the mold is further provided with a smoke exhaust fan for assisting smoke exhaust of a smoke exhaust pipeline, and the smoke exhaust fan can rapidly exhaust smoke generated by combustion, so that heat can be recycled in a heat channel.

Specifically, the inner mold shell 22, the outer mold shell 21 and the combustion pipe 3 are connected by welding through a steel structure 24.

Specifically, the bottom of the inner casing 22 is provided with a support base (not shown) for supporting the inner casing.

Specifically, a plurality of vibration motors 7 for compacting the dry material are installed on the top surface of the mould 2, and the whole body 2 is driven to vibrate through the vibration motors 7, so that the purpose of vibrating the dry material is achieved.

Specifically, two rows of the combustion nozzles 31 are arranged and arrayed along the length direction of the combustion pipeline 3; two rows of combustion nozzles 31 are arranged on the combustion pipeline at an angle of 45 degrees, the two rows of combustion nozzles 31 are arranged in a staggered manner, the aperture of each combustion nozzle 31 is 6-8mm, and the distance between every two adjacent combustion nozzles 31 on each row is 80-110mm. The combustion nozzles 31 extend from the upper end to the lower end of the combustion pipeline 3, the side wall of the dry material can be fully baked, and the combustion nozzles 31 arranged in a staggered mode enable heat emitted by combustion flame to be uniformly in close contact with the dry material, so that a good baking effect of the side wall of the dry material is achieved, and the dry material can achieve high hardening strength in a short time.

The present invention has been further described with reference to specific embodiments, but it should be understood that the specific description herein should not be construed as limiting the spirit and scope of the present invention, and that various modifications to the above-described embodiments, which would occur to persons skilled in the art after reading this specification, are within the scope of the present invention.

Claims

1. The dry material baking vibration device for the tundish is characterized by comprising a tundish cover and a mould positioned in the tundish cover, wherein a gap for accommodating dry materials is formed between the tundish cover and the mould;

the clamping fixture comprises a clamping fixture outer shell and a clamping fixture inner shell positioned in the clamping fixture outer shell, wherein a heat channel is formed between the outer peripheral wall of the clamping fixture inner shell and the inner peripheral wall of the clamping fixture outer shell, and the heat channel comprises an annular combustion channel positioned around the clamping fixture inner shell and a smoke discharge channel positioned at the lower part of the clamping fixture inner shell; a plurality of combustion pipelines extending downwards are arranged in the annular combustion channel in the circumferential direction, a plurality of combustion nozzles are arranged on the combustion pipelines, and the injection directions of the combustion nozzles face the mould shell.

2. The tundish dry material baking vibration device according to claim 1, wherein a gas pipeline and an air pipeline are arranged above the mould, the gas pipeline and the air pipeline are respectively communicated with a plurality of combustion pipelines, the gas pipeline is connected with a gas main pipeline, a first valve is arranged on the gas main pipeline, the air pipeline is connected with an air main pipeline, and a second valve is arranged on the air main pipeline.

3. The dry material baking and vibrating device for the tundish as claimed in claim 1, wherein the middle part of the inner shell of the mold is provided with at least two smoke exhaust pipes vertically penetrating the inner shell of the mold, one end of each smoke exhaust pipe is communicated with the smoke exhaust channel, and the other end of each smoke exhaust pipe is communicated with the outside.

4. The tundish dry material baking vibrator device according to claim 3, wherein the inner casing of the mold is further provided with a smoke exhauster for assisting the smoke exhaust of the smoke exhaust pipe.

5. The tundish dry material baking vibration device according to claim 1, wherein the inner mold shell, the outer mold shell and the combustion pipe are connected by welding through a steel structure.

6. The vibrating device for baking dry ingredients in a tundish according to claim 5, wherein a supporting base for supporting the inner shell of the mould is arranged at the bottom of the inner shell of the mould.

7. The tundish dry material baking vibrator according to claim 1, wherein a plurality of vibration motors for compacting the dry material are installed on the top surface of the mold.

8. The tundish dry material baking vibrator apparatus of claim 1, wherein the combustion nozzles are arranged in two rows along the circumference of the combustion pipe, and each row of the combustion nozzles are arranged in an array along the length direction of the combustion pipe; the two rows of the combustion nozzles are arranged on the combustion pipeline at an angle of 45 degrees, and the two rows of the combustion nozzles are arranged in a staggered manner.

9. The tundish dry material baking vibrator apparatus of claim 8, wherein the aperture of the combustion nozzles is 6-8mm, and the distance between two adjacent combustion nozzles in each row is 80-110mm.