CN212168943U

CN212168943U - Rotary type drainage device for molten steel drainage sand

Info

Publication number: CN212168943U
Application number: CN202020306806.4U
Authority: CN
Inventors: 钱志友; 伏兆勇; 王雄文; 雷永佳; 李玉环; 王超
Original assignee: Nanjing Iron and Steel Co Ltd
Current assignee: Nanjing Iron and Steel Co Ltd
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-12-18
Anticipated expiration: 2030-03-13

Abstract

The utility model relates to a rotary molten steel drainage device for drainage sand, which comprises a buffering sand hopper (1), wherein the lower part of the buffering sand hopper (1) is connected with a drainage groove (2) which is obliquely arranged, the lower surface of the drainage groove (2) is connected with a supporting block (3), the supporting block (3) is fixed on a rotating device (4), and the lower part of the rotating device (4) is connected with a rotating supporting seat (5); the buffering sand hopper (1) and the drainage groove (2) are both made of steel, and the inner walls of the buffering sand hopper and the drainage groove are made of refractory materials. The utility model has the advantages that guarantee the cleanliness factor of molten steel or other high temperature molten metal continuous casting or die casting processes, improve the quality of molten steel, reduce inclusion in the steel, promote the quality on die casting surface.

Description

Rotary type drainage device for molten steel drainage sand

Technical Field

The utility model belongs to the technical field of continuous casting die casting drainage equipment technique and specifically relates to a rotation type molten steel drainage device for drainage sand.

Background

In the process of continuous casting or die casting, in order to ensure that molten steel in a ladle nozzle is not solidified and can automatically flow out when the nozzle is opened, the general method is that high-melting-point guide sand is poured in advance before the ladle holds the molten steel; when pouring is started, the diversion sand flows out from a large ladle nozzle, molten steel automatically flows out, and ladle gravity flow is realized. The high-melting point induced flow sand does not melt and agglomerate at the temperature of the molten steel, ensures the automatic flow of the molten steel and has great significance for smooth steel-making pouring and quality control. However, the high-melting point drainage sand is injected into a tundish or a die, and the flowing drainage sand pollutes molten steel at the same time, so that certain influence is generated on the production of high-cleanness steel.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is exactly in order to solve the problem that current drainage sand easily pollutes the molten steel, provides a drainage device for rotation type molten steel drainage sand, can draw the drainage sand of pouring into the ladle in advance at the pouring initial stage, avoids drainage sand to flow into pouring basket or mould, guarantees the cleanliness factor of molten steel, improves the quality of molten steel.

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

a rotary type molten steel drainage device for drainage sand comprises a buffering sand hopper, wherein the lower part of the buffering sand hopper is connected with a drainage groove which is obliquely arranged, the lower surface of the drainage groove is connected with a support block, the support block is fixed on a rotary device, and a rotary support seat is connected with the lower part of the rotary device and used for rotation of the drainage groove;

the buffering sand hopper and the drainage groove are both made of steel, and the inner walls of the buffering sand hopper and the drainage groove are made of refractory materials.

The utility model discloses used rotary device is current device, utilizes the cooperation of ball and bearing to realize rotating promptly to it is rotatory to drive the drainage groove who links to each other rather than.

Furthermore, buffering sand fill is cylinder pipe or inverted cone pipe to in carrying drainage sand to the drainage inslot, play the effect of buffering.

Furthermore, a layer of buffering sand is arranged on the inner surface of the buffering sand hopper.

Furthermore, the included angle alpha between the drainage groove and the horizontal direction is 34-50 degrees.

Furthermore, the support block is provided with an arc groove, the radian of the arc groove is the same as that of the lower surface of the drainage groove, and the arc groove and the drainage groove are mutually attached and connected.

The technical scheme of the utility model among, through increasing a rotatable drainage device before the ladle, draw the drainage sand through drainage device earlier at the pouring initial stage, avoid drainage sand to flow into pouring basket or mould in the middle of, guarantee the cleanliness factor of molten steel or other high temperature molten metal continuous casting or die casting processes, improve the quality of molten steel, inclusion in the reduction steel promotes the quality on die casting surface.

Drawings

FIG. 1 is a schematic structural view of a rotary molten steel drainage device for sand drainage according to the present invention;

fig. 2 is a schematic structural view of the pallet.

Detailed Description

Example 1

In order to make the present invention more clearly understood, the following description is made with reference to the accompanying drawings, and the embodiments described herein are only used for explaining the present invention, and are not used for limiting the present invention.

Referring to fig. 1 and 2, a rotary molten steel drainage device for sand drainage is characterized in that:

the sand bucket comprises a buffering sand bucket 1, wherein the lower part of the buffering sand bucket 1 is connected with a drainage groove 2 which is obliquely arranged, the included angle alpha between the drainage groove 2 and the horizontal direction is 34 degrees, the lower surface of the drainage groove 2 is connected with a supporting block 3, an arc groove 3a is arranged on the supporting block 3, the radian of the arc groove 3a is the same as that of the lower surface of the drainage groove 2, the supporting block 3 and the drainage groove are mutually attached and connected, the supporting block 3 is fixed on a rotating device 4, and a rotating supporting seat 5 is connected below the rotating device 4 and used for rotating the drainage groove;

the buffering sand hopper 1 is an inverted conical pipe so as to convey the drainage sand into the drainage groove conveniently and play a role in buffering;

buffering sand fill 1 and drainage groove 2 all adopt steel preparation, and its inner wall is refractory material, and the internal surface of buffering sand fill 1 is equipped with one deck buffering sand.

The utility model discloses used rotary device 4 is current device, utilizes the cooperation of ball and bearing to realize rotating promptly to it is rotatory to drive the drainage groove who links to each other rather than.

When the die casting is started, firstly, 150 tons of ladle drainage sand is successfully led out through a buffering sand hopper, then a rotating device drives the whole drainage device to rotate 90 degrees on line, and the whole drainage device is connected into a long water gap for full-protection die casting; when the die casting is finished, no drainage sand remains on the surface and inside of the cast ingot, the purity and the surface quality of the cast ingot are greatly improved, and the surface quality and the fatigue performance of subsequent steel products are obviously improved.

The utility model discloses in, increase a rotatable drainage device before the ladle, draw the drainage sand through drainage device earlier at the pouring initial stage, avoid the drainage sand to flow into pouring basket or mould, guarantee the cleanliness factor of molten steel or other high temperature molten metal continuous casting or die casting processes, improve the quality of molten steel, reduce inclusion in the steel, promote the quality on die casting surface.

In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.

Claims

1. The utility model provides a sand drainage device is used in rotation type molten steel drainage which characterized in that:

the sand bucket comprises a buffering sand bucket (1), wherein the lower part of the buffering sand bucket (1) is connected with an obliquely arranged drainage groove (2), the lower surface of the drainage groove (2) is connected with a supporting block (3), the supporting block (3) is fixed on a rotating device (4), and a rotating supporting seat (5) is connected below the rotating device (4);

the buffering sand hopper (1) and the drainage groove (2) are both made of steel, and the inner walls of the buffering sand hopper and the drainage groove are made of refractory materials.

2. The rotary molten steel drainage device for sand drainage according to claim 1, wherein:

the included angle alpha between the drainage groove (2) and the horizontal direction is 34-50 degrees.

3. A rotary molten steel tapping device for sand drainage according to claim 1 or 2, characterized in that:

the inner surface of the buffering sand hopper (1) is provided with a layer of buffering sand.

4. A rotary molten steel tapping device for sand drainage according to claim 1 or 2, characterized in that:

the buffering sand hopper (1) is a cylindrical pipe or an inverted conical pipe.

5. A rotary molten steel tapping device for sand drainage according to claim 1 or 2, characterized in that:

the support block (3) is provided with an arc groove (3 a), the radian of the arc groove (3 a) is the same as that of the lower surface of the drainage groove (2), and the arc groove and the drainage groove are mutually attached and connected.