CN215668067U

CN215668067U - Oxygen blowing lance

Info

Publication number: CN215668067U
Application number: CN202121430045.4U
Authority: CN
Inventors: 吉万刚; 于海新; 王磊; 宋跃辉
Original assignee: TONGHUA STEEL LLC
Current assignee: TONGHUA STEEL LLC
Priority date: 2021-06-26
Filing date: 2021-06-26
Publication date: 2022-01-28
Anticipated expiration: 2031-06-26

Abstract

The utility model relates to blast furnace smelting auxiliary equipment, namely an oxygen blowing lance. The oxygen lance comprises a sleeve which is sleeved with the oxygen lance head in the front part, and an oxygen outlet tube which is butted with the oxygen lance is arranged in the sleeve. The oxygen lance and the oxygen lance are in plug-in fit through the conical pipe, the matching is tight, the problem that the oxygen lance and the oxygen lance fall off in the using process is well solved, the situation that the oxygen lance is tempered to cause personnel burn is avoided, and the safety accident rate is reduced. The waste of oxygen is avoided, and the energy cost is reduced. The service life of the oxygen blowing lance is prolonged.

Description

Oxygen blowing lance

Technical Field

The utility model relates to blast furnace smelting auxiliary equipment, namely an oxygen blowing lance.

Background

In the prior art, when an iron notch is drilled in front of a blast furnace, a tapping machine cannot directly drill the iron notch sometimes, so that molten iron flows out smoothly, and the operation of burning the iron notch by using an oxygen lance manually is needed. The joint of the oxygen lance and the oxygen lance is characterized in that the oxygen lance is inserted into a sleeve and fixed by fastening bolts, and a quarter-pipe welding part with the same diameter as the oxygen lance is arranged inside the sleeve (see figure 2). Such oxygen lance has drawbacks: 1. the gap between the oxygen lance and the sleeve of the oxygen lance is overlarge, and the butt joint of the two quarter pipes is arranged at the butt joint part inside the sleeve, so that the poor contact easily causes tempering, and the oxygen is wasted seriously. 2. In the using process, the oxygen lance is easy to fall off due to poor bolt fastening, the oxygen lance is easy to damage due to frequent falling, and the falling is often accompanied with the phenomenon that the oxygen lance is tempered, so that personnel can be burnt due to improper operation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide the oxygen lance with good butt joint effect with the oxygen lance aiming at the defects.

The technical solution of the utility model is as follows: the oxygen blowing lance comprises a sleeve which is sleeved with an oxygen blowing pipe at the front part of a lance head, an oxygen outlet pipe which is butted with the oxygen blowing pipe is arranged in the sleeve, and the oxygen blowing lance is characterized in that the front end of the oxygen outlet pipe is a conical pipe which can be inserted into the oxygen blowing pipe, and a gap between the sleeve and the oxygen blowing pipe forms sliding connection.

The utility model has the advantages that: the oxygen lance and the oxygen lance are in plug-in fit through the conical pipe, the matching is tight, the problem that the oxygen lance and the oxygen lance fall off in the using process is well solved, the situation that the oxygen lance is tempered to cause personnel burn is avoided, and the safety accident rate is reduced. 2. The waste of oxygen is avoided, and the energy cost is reduced. 3. The service life of the oxygen blowing lance is prolonged.

Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is a schematic diagram of a modified structure of the present invention.

Detailed Description

Referring to fig. 1 and 2, the names of the components are as follows: the oxygen lance comprises a sleeve 1, an oxygen outlet pipe 2, an oxygen lance 3, a fastening bolt 4 and an improved front oxygen outlet pipe 5.

Referring to fig. 1, the oxygen lance comprises a sleeve 1 with a front part sleeved with an oxygen lance 3, and an oxygen outlet pipe 2 butted with the oxygen lance 3 is arranged in the sleeve 1. The front end of the oxygen outlet pipe 2 is a conical pipe which can be inserted into the oxygen lance 3, and the gap between the sleeve 1 and the oxygen lance 3 forms sliding connection. The conical pipe can be inserted into the oxygen lance 3, and the clamping is tighter and tighter in the using process, the gap between the sleeve 1 and the oxygen lance 3 is almost eliminated, oxygen cannot be wasted, and the oxygen lance 3 and the oxygen lance cannot fall off to cause tempering.

The foregoing description is only exemplary of the utility model and is not intended to limit the spirit of the utility model.

Claims

1. The oxygen lance comprises a sleeve (1) which is sleeved with an oxygen lance (3) at the front part of a lance head, an oxygen outlet pipe (2) which is butted with the oxygen lance (3) is arranged in the sleeve (1), and the oxygen lance is characterized in that the front end of the oxygen outlet pipe (2) is a conical pipe which can be inserted into the oxygen lance (3), and a gap between the sleeve (1) and the oxygen lance (3) forms sliding connection.