Infrared carbon-sulfur instrument oxygen lance head

Abstract

The utility model relates to an infrared carbon and sulfur appearance oxygen lance head relates to infrared carbon and sulfur appearance equipment. Including oxygen injection head and connecting piece, oxygen injection head and connecting piece have the oxygen hole of through, oxygen injection head passes through connecting piece and is connected with oxygen lance, the outer surface of oxygen injection head is spiral round groove, when oxygen injection head stretches into infrared carbon and sulfur appearance quartz tube, spiral round groove forms spiral air slit between quartz tube inner wall. The spiral angle of spiral round groove is 45 degrees. The oxygen lance head's modelling is helpful to the high temperature fly ash that sample combustion produces in quartz tube to discharge fast, avoids adhering in oxygen lance head, quartz tube inner wall, prolongs the service life of oxygen lance head and quartz tube.

Description

Technical Field

[0001] This utility model relates to the oxygen lance head structure of an infrared carbon-sulfur analyzer. Background Technology

[0002] The infrared carbon-sulfur analyzer uses a high-frequency induction heating furnace to burn the sample, and infrared absorption method to determine the mass fraction of carbon and sulfur in the sample. The oxygen lance head, along with the oxygen lance itself, is inserted from top to bottom into a cylindrical carbon-sulfur quartz tube. The sample, placed in a crucible, is inserted from bottom to top into the quartz tube, forming a sealed combustion space for high-frequency combustion of the sample within the crucible. The oxygen lance serves to circulate oxygen, which is ejected from a small hole at the bottom of the lance head to aid combustion. Most carbon-sulfur analyzers do not consider ash accumulation in their oxygen lance heads. Since carbon-sulfur sample combustion requires the addition of a flux, such as pure tungsten, tungsten-tin, or pure tin, the high-temperature fly ash produced by these fluxes is substantial. If this fly ash is not removed promptly, it will adhere to the oxygen lance head and the quartz tube, causing severe ash accumulation on their inner walls and clogging the oxygen nozzle at the bottom of the lance head. This significantly reduces the lifespan of both the lance head and the quartz tube. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide an oxygen lance head for an infrared carbon-sulfur analyzer, which is in contrast to the above-mentioned prior art. The shape of the oxygen lance head helps to quickly discharge the high-temperature fly ash generated by the combustion of the sample in the quartz tube, and avoids it from adhering to the oxygen lance head and the inner wall of the quartz tube.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows: an oxygen lance head for an infrared carbon-sulfur analyzer, characterized in that: it includes an oxygen injection head and a connector, the oxygen injection head and the connector have through oxygen holes, the oxygen injection head is connected to the oxygen lance through the connector, the outer surface of the oxygen injection head is a spiral groove, and when the oxygen lance head is placed inside the quartz tube of the infrared carbon-sulfur analyzer, a spiral air gap is formed between the spiral groove and the inner wall of the quartz tube.

[0005] As a preferred embodiment, the spiral angle of the spiral groove is 45°. The 45° spiral air gap formed by the spiral groove at this angle is more conducive to fly ash discharge.

[0006] As a preferred embodiment, the oxygen injection head and the connector are integrally molded parts, and the connector has connecting threads, which are threadedly connected to the oxygen gun.

[0007] As a preferred option, the oxygen nozzle and connector are provided with a fire-resistant coating to protect the oxygen nozzle from being burned by high-temperature fly ash.

[0008] Compared with the prior art, the advantages of this utility model are as follows: In response to the phenomenon of high-temperature fly ash adhering to the oxygen gun head and the inner wall of the quartz tube, this utility model designs the structure of the oxygen gun head, with the outer surface of the oxygen nozzle being a spiral groove, forming a spiral air gap with the inner wall of the quartz tube. Under the negative pressure of the vacuum cleaner, the fly ash in the quartz tube is quickly discharged through the spiral air gap, avoiding retention and adhesion on the oxygen gun head. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the oxygen lance head in an embodiment of this utility model;

[0010] In the picture, 1 is the oxygen spray head and 2 is the connector. Detailed Implementation

[0011] The present invention will be further described in detail below with reference to the accompanying drawings. The embodiments described are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0012] This embodiment relates to an oxygen lance head for an infrared carbon-sulfur analyzer. The oxygen lance head has a through hole in the center for introducing oxygen. The oxygen lance head consists of an oxygen injection head 1 and a connector 2, which are integrally formed. The connector 2 has external threads for threaded connection with the oxygen lance.

[0013] In this embodiment, the outer surface of the oxygen injection head 1 is provided with multiple 45° spiral grooves. When the oxygen injection head is located inside the quartz tube, the spiral grooves and the inner wall of the quartz tube form a spiral air gap. The fly ash is discharged through the spiral air gap. The spiral air gap can form a vortex, which accelerates the discharge of fly ash and prevents it from being retained and attached to the oxygen gun head and the inner wall of the quartz tube.

[0014] In addition, the oxygen lance head has a refractory coating, which makes it less likely for samples from combustion splatter to remain on the oxygen lance head, thus improving the lifespan of the parts and preventing the oxygen nozzle from becoming clogged. In this embodiment, the oxygen lance head uses 310S stainless steel, which can withstand higher temperatures and can stably analyze a range of special samples such as high-temperature alloy steel, manganese alloy, and ferromolybdenum.

[0015] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. An oxygen lance tip for an infrared carbon-sulfur analyzer, characterized in that: It includes an oxygen injection head and a connector. The oxygen injection head and the connector have through oxygen holes. The oxygen injection head is connected to the oxygen lance through the connector. The outer surface of the oxygen injection head is a spiral groove. When the oxygen injection head is inserted into the quartz tube of the infrared carbon-sulfur analyzer, a spiral air gap is formed between the spiral groove and the inner wall of the quartz tube.

2. The infrared carbon-sulfur analyzer oxygen lance head according to claim 1, characterized in that: The spiral angle of the spiral groove is 45°.

3. The infrared carbon-sulfur analyzer oxygen lance head according to claim 1, characterized in that: The oxygen injection head and the connector are integrally formed, and the connector has connecting threads.

4. The infrared carbon-sulfur analyzer oxygen lance head according to claim 1, characterized in that: The oxygen injection head and connector are coated with a fire-resistant coating.

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