CN204529890U - Quick-action opening blocking-up device before State of Blast Furnace - Google Patents

Abstract

The utility model discloses a quick plugging device in front of a blast furnace, which comprises a base and a gun lip. 150mm, the wall thickness of the sleeve is 2mm, and its outer port is flush with the front end of the gun lip; the gun lip is an annular plate, the side of the annular plate connected to the sleeve is stepped, and the side connected to the base is wedge-shaped. The device solves the problem of replacing the blast furnace nozzle for a long time under high temperature after the blast furnace nozzle is melted, reduces the labor intensity, and reduces the injury to the workers during the operation process of replacing the nozzle after the blast furnace nozzle is blown.

Description

Quick plugging device in front of blast furnace

technical field

The utility model relates to a quick plugging device in front of a blast furnace, which belongs to the field of machinery.

Background technique

Usually, the plugging of the blast furnace is after the iron hole is blown (a symbolic phenomenon of the blast furnace plugging), and the hydraulic gun is used to drive the mud in the hydraulic gun into the blast furnace iron hole. The strength becomes high rapidly, so that the slag and iron in the blast furnace no longer flow out. However, under special circumstances, such as closing the door without blowing the iron mouth, or there is a foreign object under the iron mouth when closing the door, so that the nozzle of the hydraulic gun cannot be tightly combined with the iron mouth. At this time, the high-temperature slag iron will It will rush out from the gap between the nozzle and the iron nozzle, and the nozzle of the iron nozzle will be melted, eventually causing the blast furnace to fail to plug normally. In this case, the nozzle must be replaced as a whole, but due to the high-temperature expansion of the pin that fixes the nozzle and the bonding effect of slag and iron between the pin and the nozzle body, it is very difficult to remove and replace the nozzle. , At this time, the blast furnace is often forced to greatly reduce the wind (reducing wind is a behavior that seriously damages the forward movement of the blast furnace), and the front workers are forced to replace the nozzle for a long time at high temperature, which is extremely labor-intensive and dangerous.

Contents of the invention

The utility model provides a fast plugging device in front of a blast furnace. When the iron nozzle is blown out and the nozzle is melted by molten iron, the nozzle can be blocked without removing the nozzle and the blast furnace does not need to reduce the wind, thereby reducing the The impact on blast furnace and personnel safety is reduced.

The technical scheme adopted by the utility model is: a quick plugging device in front of a blast furnace, including a base and a gun lip, characterized in that: a sleeve is welded on the inner wall of the gun lip, and the outer diameter of the sleeve is the same as that of the gun lip. The inner diameter is the same, which is 150mm, the wall thickness of the sleeve is 2mm, and its outer port is flush with the front end of the gun lip; The sides are wedge-shaped.

The total length of the sleeve is 150mm, and the material is ordinary carbon steel.

The utility model is used when the iron nozzle is blown out and the nozzle is melted by molten iron, and it is not necessary to unload the nozzle, and directly carry out the plugging operation. The specific implementation method: A. remove the slag and iron in the molten nozzle , dig out the mud;

B. Put the emergency device into the base (hit it in with a sledgehammer), and ensure that the damaged nozzle body is blocked by the sleeve in the emergency device;

C. Perform 3-point electric welding between the emergency device and the base (the angle between the 3 points is 120°);

D. Carry out normal door closing operation.

The utility model provides a new fast plugging device. In the case of no need to replace the nozzle base, the quick plugging device only needs to be directly installed on the melted nozzle, and the nozzle can be fixed by the device. It is blocked by the molten slag and iron, so that it is not necessary to replace the nozzle and achieve the purpose of rapid plugging, thereby reducing various hazards related to production and safety.

The beneficial effects of the utility model: ① Solve the problem of long-term replacement of the blast furnace nozzle at high temperature after the blast furnace nozzle is melted, reduce the labor intensity, and reduce the safety injury of workers in the process of replacing the nozzle after the blast furnace nozzle is blown;

②It avoids that the blast furnace cannot be blocked due to the damage of the nozzle, and the drastic air reduction operation is carried out in order to replace the nozzle, which stabilizes the condition of the blast furnace;

③The common carbon steel sleeve used in the utility model has a total length of 150mm, and the function of the sleeve is to block the melting position of the nozzle; the length of the sleeve is set to 150mm, which is the same as the maximum melting depth of the nozzle.

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the right side view of Fig. 1 .

In the figure, 1 is the sleeve, and 2 is the gun lip.

Detailed ways

Example:

As shown in Figures 1 and 2, a quick plugging device in front of a blast furnace includes a base and a gun lip. The inner diameter of the lip 2 is the same, which is 150 mm, the wall thickness of the sleeve 1 is 2 mm, and its outer port is flush with the front end of the gun lip 2; the gun lip 2 is an annular plate, and the side connecting the annular plate and the sleeve 1 is stepped , the side connected to the base is wedge-shaped.

The total length of the sleeve is 150mm, and the material is ordinary carbon steel.

The specific production method is:

① Immediately clean up the slag, iron and mud inside the melted nozzle, so that the emergency device can be installed smoothly.

②Punch the emergency device into the nozzle base with a sledgehammer.

③ Perform 3-point electric welding (120° included angle between 3 points) between this emergency device and the gun lip of the original gun nozzle to fix it.

④The hydraulic gun feeds mud to make the gun lip full of gun mud.

⑤ Implement the door closing operation.

Claims (2)

1. A fast plugging device in front of a blast furnace, comprising a base and a gun lip, is characterized in that: a sleeve is welded on the inner wall of the gun lip, and the outer diameter of the sleeve is the same as the inner diameter of the gun lip, which is 150mm. The barrel wall thickness is 2mm, and its outer port is flush with the front end of the gun lip; the gun lip is an annular plate, the side of the annular plate connected to the sleeve is stepped, and the side connected to the base is wedge-shaped. 2. The rapid plugging device in front of the blast furnace according to claim 1, characterized in that: the total length of the sleeve is 150 mm, and the material is ordinary carbon steel.