CN213951247U

CN213951247U - Anti-abrasion structure of oxygen lance nitrogen sealing sieve

Info

Publication number: CN213951247U
Application number: CN202023119095.9U
Authority: CN
Inventors: 娄正余; 苏虎; 石立泉; 邓继彬
Original assignee: Tangshan Yanshan Iron And Steel Co ltd
Current assignee: Hebei Yanshan iron and Steel Group Co.,Ltd.
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-08-13
Anticipated expiration: 2030-12-22

Abstract

The utility model relates to a converter steelmaking equipment technical field specifically is an abrasionproof of oxygen rifle nitrogen seal sieve decreases structure. The nitrogen sealing sieve comprises a nitrogen sealing sieve, a plurality of equal-diameter annular convex blocks are arranged on the inner wall of the nitrogen sealing sieve at intervals, and a plurality of vent holes are formed in the wall of the nitrogen sealing sieve between every two adjacent annular convex blocks. The utility model discloses seal the direct annular lug and oxygen rifle contact that change nitrogen into on the sieve inner wall with the oxygen rifle contact of nitrogen seal sieve inner wall to on sealing the sieve wall of sieve with the nitrogen of air vent setting between two adjacent annular lugs, reduced the degree of wear of nitrogen seal sieve inner wall surface, simultaneously, also played the guard action to the air vent, can guarantee the result of use that nitrogen sealed the sieve, increase of service life.

Description

Anti-abrasion structure of oxygen lance nitrogen sealing sieve

Technical Field

The utility model relates to a converter steelmaking equipment technical field specifically is an abrasionproof of oxygen rifle nitrogen seal sieve decreases structure.

Background

With the increasing environmental protection situation, the requirements on the relevant environmental protection equipment are also more and more strict; but the oxygen lance nitrogen sealing sieve used at present still adopts the prior structural form: namely, the inner surface of the nitrogen sealing sieve is smooth and is directly contacted with the oxygen lance body; the oxygen rifle is lifting the rifle from top to bottom, rifle in-process down, and nitrogen seals sieve internal surface and oxygen rifle friction, causes internal surface gas pocket wearing and tearing, and the gas flow direction changes, influences nitrogen seal effect, can't use, reduces life cycle, consequently, in order to guarantee nitrogen seal effect, must change spare parts, based on the cost control angle, guarantees nitrogen seal effect, and extension life becomes the problem that awaits the solution urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above problem to a wear-resisting structure of oxygen rifle nitrogen seal sieve is provided, seal the sieve inner wall with nitrogen and directly change into the annular lug and oxygen rifle contact on the sieve inner wall with the oxygen rifle contact, and set up the air vent on the sieve wall of nitrogen seal sieve between two adjacent annular lugs, reduced the degree of wear that nitrogen seal sieve inner wall surface, simultaneously, also played the guard action to the air vent, can guarantee the result of use that nitrogen sealed the sieve, increase of service life.

The utility model provides a problem, the technical scheme who adopts is:

the utility model provides an anti-abrasion structure of oxygen rifle nitrogen seal sieve, includes the nitrogen seal sieve, and interval arrangement has a plurality of equal footpath annular lug on the inner wall of nitrogen seal sieve, is provided with a plurality of air vent on the nitrogen seal sieve wall between two adjacent annular lugs.

Adopt above-mentioned technical scheme the utility model discloses, compare with prior art, its outstanding characteristics are:

the utility model discloses seal the direct annular lug and oxygen rifle contact that change nitrogen into on the sieve inner wall with the oxygen rifle contact of nitrogen seal sieve inner wall to on sealing the sieve wall of sieve with the nitrogen of air vent setting between two adjacent annular lugs, reduced the degree of wear of nitrogen seal sieve inner wall surface, simultaneously, also played the guard action to the air vent, can guarantee the result of use that nitrogen sealed the sieve, increase of service life.

Drawings

Fig. 1 is a schematic view of a front view structure of an embodiment of the present invention;

fig. 2 is a schematic view of a front sectional structure of an embodiment of the present invention;

fig. 3 is a schematic diagram of a top view structure of an embodiment of the present invention;

in the figure: nitrogen sealing sieve 1; an annular boss 2; a vent hole 3.

Detailed Description

The following description of the embodiments will help the public to understand the present invention, but the specific embodiments given by the applicant should not be considered as limiting the technical solution of the present invention, and any changes in the definition of the components or technical features and/or in the form of the overall structure rather than substantial changes should be considered as the protection scope defined by the technical solution of the present invention.

Referring to fig. 1 to 3, the technical solution of the present invention is as follows:

the utility model provides an oxygen rifle nitrogen seals abrasionproof decreases structure of sieve, includes that nitrogen seals sieve 1, its characterized in that: six equal-diameter annular lugs 2 are arranged on the inner wall of the nitrogen sealing sieve 1 at intervals, and sixteen vent holes 3 are formed in the sieve wall of the nitrogen sealing sieve 1 between every two adjacent annular lugs 2; annular boss 2 on the inner wall of nitrogen seal sieve 1 contacts with the oxygen lance body, and the oxygen lance is carrying the rifle from top to bottom, lower rifle in-process, can directly not take place the friction with air vent 3, plays the guard action to air vent 3 and can guarantee the result of use of nitrogen seal sieve 1, prevents that air vent 3 from warping, extension life.

The utility model discloses directly change the inner wall of nitrogen seal sieve 1 into nitrogen seal sieve 1 inner wall with oxygen rifle contact annular lug 2 and oxygen rifle contact to on the sieve wall of sieve 1 is sealed to nitrogen with air vent 3 setting between two adjacent annular lug 2, reduced the degree of wear that nitrogen seal sieved 1 inner wall surface, simultaneously, also played the guard action to air vent 3, can guarantee the result of use that nitrogen seal sieved 1, increase of service life.

The above description is only a preferred and practical embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent variations made by using the contents of the specification and the drawings are included in the scope of the present invention.

Claims

1. The utility model provides an oxygen rifle nitrogen seals abrasionproof decreases structure of sieve, includes nitrogen and seals the sieve, its characterized in that: a plurality of annular convex blocks with the same diameter are arranged on the inner wall of the nitrogen sealing sieve at intervals, and a plurality of vent holes are formed in the wall of the nitrogen sealing sieve between every two adjacent annular convex blocks.