Stopper rod of continuous casting machine

Abstract

The utility model discloses a stopper rod of a continuous casting machine, which comprises a stopper rod body, a cross arm and a stopper head, the stopper head is vertically connected with a high-temperature-resistant air pipe, a high-temperature-resistant sleeve is arranged on the outer side of the high-temperature-resistant air pipe, a gap is arranged between the high-temperature-resistant sleeve and the high-temperature-resistant air pipe, and a heat insulation packing layer is arranged in the gap. The stopper rod body is composed of multiple sections of stopper rod sleeves, the stopper rod sleeves are arranged on the high-temperature-resistant sleeve in a sleeving mode, the stopper rod sleeve located on the top layer is covered with a stopper rod sleeve top cover, studs are fixedly arranged on the two sides of the stopper rod sleeve top cover, the studs penetrate through the cross arm upwards and are fixed through nuts, and the high-temperature-resistant air pipe penetrates through the stopper rod sleeve top cover and the cross arm upwards. The utility model aims to provide a stopper rod of a continuous casting machine, which is expected to save the replacement cost of the stopper rod.

Description

Technical Field

[0001] The utility model relates to a stopper rod of a continuous casting machine, in particular to a stopper rod of a continuous casting machine. Background Art

[0002] The tundish is a refractory container used in short-process steelmaking. It first receives the molten steel poured from the ladle, and then distributes it to each crystallizer through the tundish nozzle. In order to control the steel flow to stabilize continuous casting, a stopper rod is installed above the tundish nozzle. By adjusting the gap between it and the nozzle, the purpose of controlling the flow rate of molten steel is achieved. When the stopper rod is inserted into the tundish, it will be corroded and impacted by the molten steel, causing the stopper rod to fall off and be damaged. After damage, the stopper rod needs to be replaced, but when replacement is needed, the entire tundish needs to be replaced. For example, the utility model with the publication number CN 210435358 U records a tundish that is easy to replace the stopper rod, belonging to the technical field of tundish equipment. The utility model includes a tundish, a stopper rod, a first cross arm, and a second cross arm. The stopper rod includes a stopper rod body and a nested body, and the nested body is sleeved on the outside of the stopper rod body; the first cross arm is connected to the stopper rod body, and the second cross arm is connected to the nested body; a dam is provided on the inner lining of the tundish, and the dam is located at the entrance of the submerged water inlet. In this device, once the nested body or the stopper rod body is damaged, the entire nested body or the stopper rod body needs to be replaced, resulting in unnecessary waste and increased costs. For this reason, the utility model provides a stopper rod for a continuous casting machine to overcome this technical problem. Utility Model Content

[0003] The utility model aims to provide a stopper rod for a continuous casting machine, so as to save the replacement cost of the stopper rod.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A stopper rod for a continuous casting machine comprises a stopper rod body, a cross arm and a plug head, wherein a high temperature resistant air pipe is vertically connected to the plug head, a high temperature resistant sleeve is arranged on the outside of the high temperature resistant air pipe, a gap is arranged between the high temperature resistant sleeve and the high temperature resistant air pipe, and a heat insulating filler layer is arranged in the gap, the stopper rod body is composed of a plurality of stopper rod sleeves, the stopper rod sleeves are arranged on the high temperature resistant sleeves, a stopper rod sleeve top cover is arranged on the top cover of the stopper rod sleeve, studs are fixedly arranged on both sides of the stopper rod sleeve top cover, the studs pass upward through the cross arm and are fixed by nuts, and the high temperature resistant air pipe passes upward through the stopper rod sleeve top cover and the cross arm.

[0006] Furthermore, the high temperature resistant casing is also provided with an end sheath, and the end sheath is located between the two stopper rod sheaths.

[0007] Furthermore, a vent hole is provided at the center of the plug, and the vent hole is connected to the high temperature resistant air pipe.

[0008] Furthermore, an external thread is provided above the outer wall of the high temperature resistant air pipe, and the top cover of the stopper rod sleeve is connected to the external thread of the high temperature resistant air pipe.

[0009] Furthermore, a heat insulating sleeve is provided on the cross arm.

[0010] Furthermore, the thermal insulation filler layer is a compacted zirconium oxide powder layer.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model is provided with a high temperature resistant sleeve and a high temperature resistant air pipe. The high temperature resistant air pipe is connected with the air vent of the plug head so as to blow argon into the molten steel. The stopper rod body is composed of a plurality of stopper rod sleeves. A plurality of stopper rod sleeves are sleeved on the outer side of the high temperature resistant sleeve. Therefore, when a section of the stopper rod sleeve is damaged and slag falls off, only the section of the stopper rod sleeve needs to be replaced, thereby eliminating the need to replace the entire stopper rod, thus saving replacement costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model.

[0014] Figure 2 It is a schematic diagram of the top cover structure of the stopper rod sleeve.

[0015] In the figure, 1-plug, 2-vent, 3-high temperature resistant sleeve, 4-high temperature resistant air pipe, 5-insulating filler layer, 6-plug rod sleeve, 7-end sleeve, 8-plug rod sleeve top cover, 9-cross arm, 10-stud, 11-nut, 12-insulating sleeve. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0017] refer to Figure 1As shown, the utility model provides a continuous casting machine stopper rod, including a stopper rod body, a cross arm 9 and a plug head 1, the plug head 1 is vertically connected with a high temperature resistant air pipe 4, a high temperature resistant sleeve 3 is arranged outside the high temperature resistant air pipe 4, a gap is arranged between the high temperature resistant sleeve 3 and the high temperature resistant air pipe 4, and a heat insulating filler layer 5 is arranged in the gap, thereby reducing heat transfer, the stopper rod body is composed of a plurality of sections of stopper rod sleeves 6, and the stopper rod sleeves 6 are sleeved on the high temperature resistant sleeve 3, so that when a section of the stopper rod sleeve 6 is damaged When slag falls off, it is only necessary to replace this section of the stopper rod sleeve 6, and there is no need to replace the entire stopper rod, thus saving replacement costs. The upper cover of the stopper rod sleeve 6 located on the top layer is provided with a stopper rod sleeve top cover 8, and studs 10 are fixedly provided on both sides of the stopper rod sleeve top cover 8. The studs 10 pass upward through the cross arm 9 and are fixed by nuts 11. The high-temperature resistant air pipe 4 passes upward through the stopper rod sleeve top cover 8 and the cross arm 9. The high-temperature resistant air pipe 4 is used to introduce argon gas. A vent 2 is provided at the center of the plug head 1, and the vent 2 is connected to the high-temperature resistant air pipe 4.

[0018] A further solution of this embodiment is that the high temperature resistant sleeve 3 is also provided with an end sleeve 7, which is located between the two stopper sleeves 6. The end sleeve 7 is made of a high temperature resistant material, and the upper and lower edges of the stopper sleeve 6 are protected by the end sleeve 7 to prevent slag from falling due to impact. An external thread is provided on the outer wall of the high temperature resistant air pipe 4, and the top cover 8 of the stopper sleeve is connected to the external thread of the high temperature resistant air pipe 4. A heat insulation sleeve 12 is provided on the cross arm 9. The heat insulation filler layer 5 is a compacted zirconium oxide powder layer.

[0019] Although the utility model is described herein with reference to a plurality of illustrative embodiments of the utility model, it should be understood that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the disclosure, drawings, and claims of the present application, various modifications and improvements may be made to the components or layout of the subject combination layout. In addition to the modifications and improvements made to the components or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A stopper rod for a continuous casting machine, characterized in that: The invention comprises a stopper rod body, a cross arm (9) and a stopper head (1), wherein a high temperature resistant air pipe (4) is vertically connected to the stopper head (1), a high temperature resistant sleeve (3) is arranged outside the high temperature resistant air pipe (4), a gap is arranged between the high temperature resistant sleeve (3) and the high temperature resistant air pipe (4), and a heat insulating filler layer (5) is arranged in the gap, the stopper rod body is composed of a plurality of stopper rod sleeves (6), the stopper rod sleeves (6) are sleeved on the high temperature resistant sleeves (3), the top cover of the stopper rod sleeve (6) located at the top layer is provided with a stopper rod sleeve top cover (8), studs (10) are fixedly arranged on both sides of the stopper rod sleeve top cover (8), the studs (10) pass upward through the cross arm (9) and are fixed by nuts (11), and the high temperature resistant air pipe (4) passes upward through the stopper rod sleeve top cover (8) and the cross arm (9).

2. A continuous casting machine stopper rod according to claim 1, characterized in that: The high temperature resistant casing (3) is also provided with an end sheath (7), and the end sheath (7) is located between the two stopper rod sheaths (6).

3. A stopper rod for a continuous casting machine according to claim 1, characterized in that: The plug (1) is provided with a vent hole (2) at the center, and the vent hole (2) is connected to the high temperature resistant air pipe (4).

4. A stopper rod for a continuous casting machine according to claim 1, characterized in that: An external thread is provided above the outer wall of the high temperature resistant air pipe (4), and the plug rod sleeve top cover (8) is connected to the external thread of the high temperature resistant air pipe (4).

5. A stopper rod for a continuous casting machine according to claim 1, characterized in that: The cross arm (9) is sleeved with a heat insulating sleeve (12).

6. A stopper rod for a continuous casting machine according to claim 1, characterized in that: The thermal insulation filler layer (5) is a compacted zirconium oxide powder layer.

Images