Wire feeding guide pipe of wire feeder of refining furnace

Abstract

The utility model relates to the technical field of ferrous metallurgy, and provides a refining furnace wire feeder wire feeding guide pipe which comprises an inner pipe, an outer pipe and a wire outlet pipe, the outer pipe is arranged on the inner pipe in a sleeving mode, an air cavity is formed between the outer pipe and the inner pipe, an inflation pipe is arranged on the outer pipe, and the wire outlet pipe is detachably installed at the lower end of the inner pipe. According to the wire feeding device, the outer pipe is arranged, after the gas cavity is filled with the inert gas through the gas filling pipe, the inert gas forms a gas curtain in the gas cavity, in the wire feeding process, the inert gas can isolate contact between air and wires, the wires are prevented from being oxidized in the wire feeding process, the yield of alloy elements is increased, when the wire outlet pipe is damaged, only the wire outlet pipe needs to be replaced, and the wire feeding efficiency is improved. Therefore, the production cost is reduced.

Description

Technical Field

[0001] This application relates to the field of iron and steel metallurgy technology, and more specifically, to a wire feeding guide for a refining furnace wire feeder. Background Technology

[0002] In the iron and steel metallurgical process, wire feeding technology in refining furnaces is an important process. Various alloy wires or additives are fed into molten steel through a wire feeder to adjust the composition and properties of the molten steel. Since the molten steel contains a variety of chemical elements and compounds, it is easy to cause corrosion and cracking of the wire exit tube. External air can enter the interior of the wire exit tube through the cracks and oxidize the wire, reducing the recovery rate of alloying elements. Utility Model Content

[0003] The purpose of this application is to provide a wire feeding guide for a refining furnace wire feeder to prevent the oxidation of the wire during the wire feeding process and improve the recovery rate of alloying elements.

[0004] This application provides a wire feeding guide for a refining furnace wire feeder, adopting the following technical solution:

[0005] A wire feeding guide tube for a refining furnace wire feeder includes an inner tube, an outer tube, and a wire outlet tube. The outer tube is sleeved on the inner tube, and an air cavity is formed between the outer tube and the inner tube. An air inlet tube is provided on the outer tube, and the wire outlet tube is detachably installed at the lower end of the inner tube.

[0006] Preferably, the lower end of the wire outlet tube is constricted.

[0007] Preferably, the lower end of the inner tube has an internal thread, the upper end of the wire outlet tube has an external thread, and the wire outlet tube is threadedly connected to the inner tube.

[0008] Preferably, a sealing ring is fitted onto the upper end of the wire outlet tube.

[0009] Preferably, the inflation tube is equipped with a control valve and a pressure gauge.

[0010] Preferably, a quick connector is provided at the end of the inflation tube away from the outer tube.

[0011] Preferably, a flow meter is installed on the inflation pipe.

[0012] Preferably, a heat exchange tube is provided inside the air cavity, the heat exchange tube is spirally wound on the inner tube, and the end of the heat exchange tube passes through the outer tube.

[0013] Compared with the prior art, the beneficial effects of this application are as follows:

[0014] This application sets up an outer tube, and after inert gas is injected into the air chamber through the air filling pipe, the inert gas forms an air curtain in the air chamber. During the wire feeding process, the inert gas can isolate the air from the wire, prevent the wire from oxidizing during the wire feeding process, and improve the recovery rate of alloying elements. When the wire exit tube is damaged, only the wire exit tube needs to be replaced, instead of replacing the whole tube, thereby reducing production costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is an exploded view of the present invention.

[0018] The reference numerals in the attached figures are as follows:

[0019] 1. Inner tube; 2. Outer tube; 3. Outlet tube; 4. Air chamber; 5. Inflation tube; 6. Internal thread; 7. External thread; 8. Sealing ring; 9. Control valve; 10. Pressure gauge; 11. Quick connector; 12. Flow meter; 13. Heat exchange tube. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] Example

[0027] like Figure 1 and Figure 2 As shown in the embodiment of this application, the wire feeding guide of the refining furnace wire feeder includes an inner tube 1, an outer tube 2 and a wire outlet tube 3. The outer tube 2 is sleeved on the inner tube 1, and an air cavity 4 is formed between the outer tube 2 and the inner tube 1. An air filling pipe 5 is provided on the outer tube 2. The wire outlet tube 3 is detachably installed at the lower end of the inner tube 1.

[0028] When wire feeding is required during production, sufficient inert gas is injected into the air chamber 4 through the air filling pipe 5. After inserting the lower end of the wire exit pipe 3 into the molten steel, the wire feeding operation can begin. During the wire feeding process, the inert gas forms an air curtain in the air chamber 4, which can isolate the air from the wire and prevent the wire from oxidizing during the wire feeding process, thereby improving the recovery rate of alloying elements. When the wire exit pipe 3 is damaged, only the wire exit pipe 3 needs to be replaced, without the need for the entire system to be replaced, thus reducing production costs.

[0029] In this embodiment, the lower end of the wire outlet tube 3 is constricted, and the constricted structure makes it easy to insert the wire outlet tube 3 into the molten steel.

[0030] In this embodiment, the lower end of the inner tube 1 has an internal thread 6, and the upper end of the wire outlet tube 3 has an external thread 7. The wire outlet tube 3 is threadedly connected to the inner tube 1. Since the molten steel contains a variety of chemical elements and compounds, these substances may react with the wire outlet tube 3 at high temperatures, causing the wire outlet tube 3 to corrode. Therefore, the wire outlet tube 3 needs to be replaced regularly. The threaded connection method makes it easy to disassemble and replace the wire outlet tube 3.

[0031] In this embodiment, a sealing ring 8 is fitted on the upper end of the wire outlet tube 3. The sealing ring 8 is used to seal the connection end between the wire outlet tube 3 and the inner tube 1 to prevent external air from entering the inner tube 1 through the thread gap.

[0032] In this embodiment, the inflation tube 5 is equipped with a control valve 9 and a pressure gauge 10. The control valve 9 is used to control the opening and closing of the inflation tube 5. When the pressure gauge 10 reading is too high, a warning signal is issued and the control valve 9 is opened to release some gas. When the pressure gauge 10 reading is too low, an abnormality is indicated, and the inner tube 1 needs to be repaired or replaced.

[0033] In this embodiment, a quick connector 11 is provided at the end of the inflation tube 5 away from the outer tube 2. The quick connector 11 enables the inflation tube 5 to be quickly connected to the inflation tube of an external air source.

[0034] In this embodiment, a flow meter 12 is provided on the air filling pipe 5. When inert gas is filled into the air chamber 4, the flow meter 12 is used to measure the flow rate of the inert gas.

[0035] In this embodiment, a heat exchange tube 13 is provided inside the air cavity 4. The heat exchange tube 13 is spirally wound on the inner tube 1, and the end of the heat exchange tube 13 passes through the outer tube 2. When in use, a heat exchange medium is introduced into the heat exchange tube 13 to cool down the inner tube 1 and the outer tube 2, thereby extending the service life of the inner tube 1 and the outer tube 2.

[0036] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A wire feeding guide tube for a refining furnace wire feeder, characterized in that: It includes an inner tube, an outer tube, and a wire outlet tube. The outer tube is sleeved on the inner tube, and an air cavity is formed between the outer tube and the inner tube. An air inlet tube is provided on the outer tube, and the wire outlet tube is detachably installed at the lower end of the inner tube.

2. The wire feeding guide tube of the refining furnace wire feeder according to claim 1, characterized in that: The lower end of the wire tube is constricted.

3. The wire feeding guide tube of the refining furnace wire feeder according to claim 2, characterized in that: The lower end of the inner tube has an internal thread, and the upper end of the wire outlet tube has an external thread. The wire outlet tube is threadedly connected to the inner tube.

4. The wire feeding guide tube of the refining furnace wire feeder according to claim 3, characterized in that: A sealing ring is fitted onto the upper end of the wire outlet tube.

5. The wire feeding guide tube of the refining furnace wire feeder according to claim 1, characterized in that: The inflation tube is equipped with a control valve and a pressure gauge.

6. The wire feeding guide tube of a refining furnace wire feeder according to claim 5, characterized in that: A quick connector is provided at the end of the inflation tube away from the outer tube.

7. The wire feeding guide tube of a refining furnace wire feeder according to claim 6, characterized in that: A flow meter is installed on the inflation pipe.

8. The wire feeding guide tube of the refining furnace wire feeder according to claim 5, characterized in that: The air cavity is equipped with a heat exchange tube, which is spirally wound around the inner tube, and the end of the heat exchange tube passes through the outer tube.

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