Submersed nozzle

Abstract

The utility model discloses a submersed nozzle, which comprises a submersed nozzle body, a sliding surface and a ventilating ring, the sliding surface and the ventilating ring are integrally connected with the top of the submersed nozzle body, the ventilating ring is horizontally embedded in the sliding surface, and the top end surface of the ventilating ring is flush with the top end surface of the sliding surface; the submersed nozzle body is provided with an argon blowing channel, and the ventilation ring is communicated with an argon bottle through the argon blowing channel. Argon is guided into the top of the sliding face through the ventilation ring, so that contact between the sliding face and air is isolated, the sealing effect is achieved, no space for foreign matter to enter exists in the sliding face, the situation that foreign matter enters the groove to affect the sealing effect is avoided, air supply of the ventilation ring is uniform, and the sealing effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of middle-package nozzles, and more specifically to an immersion nozzle. Background Art

[0002] When the submerged nozzle is used in conjunction with the tundish nozzle, there is usually a poor combination between the two working surfaces. Poor combination will result in air absorption, causing oxidation of the tundish nozzle and the submerged nozzle plate surface (working surface). After a long period of oxidation, the strength of the working surface will decrease, resulting in severe scratches when replacing the nozzle, and even steel penetration accidents.

[0003] At present, in order to solve the problem of air suction caused by the poor combination of the immersed nozzle and the middle package upper nozzle, a groove is usually added to the working surface of the middle package upper nozzle, a hole is drilled in the groove, and argon gas is blown to the middle package upper nozzle. The argon gas is introduced into the groove through the drilled channel, thereby isolating the plate surface from the air to a certain extent.

[0004] However, foreign matter can easily enter the groove, and after entering the groove, the foreign matter will adhere to the water inlet, thus affecting the sealing effect.

[0005] Therefore, providing an immersion water outlet with reliable sealing is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the utility model provides an immersion type water outlet, which has stable and reliable sealing and improves the sealing effect.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] An immersion sprue comprises an immersion sprue body and a sliding surface connected to the top thereof as an integral whole, and also comprises an air permeable ring, wherein the air permeable ring is horizontally embedded in the sliding surface, and the top end surface of the air permeable ring is flush with the top end surface of the sliding surface; the immersion sprue body has an argon blowing channel, and the air permeable ring is connected to an argon gas bottle via the argon blowing channel.

[0009] By adopting the above technical solution, the beneficial effects of the utility model are:

[0010] Argon is introduced into the top of the sliding surface through the breathable ring, thereby isolating the sliding surface from contact with the air and achieving a sealing effect. There is no space for foreign matter to enter the sliding surface, which prevents foreign matter from entering the groove and affecting the sealing effect. The breathable ring supplies air evenly, which can improve the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0012] Figure 1 The accompanying drawing is a structural schematic diagram of an immersion nozzle provided by the utility model. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] like Figure 1 As shown, the embodiment of the utility model discloses an immersion type nozzle, including an immersion type nozzle body 1 and a sliding surface 2 connected to the top thereof as an integral whole, and a breathable ring 3. In this embodiment, the breathable ring 3 is substantially a breathable material, in a ring shape, and is horizontally embedded in the sliding surface 2, and the top surface of the breathable ring 3 is flush with the top surface of the sliding surface 2; the immersion type nozzle body 1 has an argon blowing channel 11, and the breathable ring 3 is connected to the argon gas bottle through the argon blowing channel 11. Of course, the argon blowing channel 11 can also be connected to the argon gas bottle through an air pipe. In the utility model, argon gas is introduced into the top of the sliding surface 2 through the breathable ring 3, thereby isolating the sliding surface 2 from contact with the air, achieving a sealing effect, and there is no space for foreign matter to enter the sliding surface 2, thereby avoiding foreign matter entering the groove to affect the sealing effect, and the breathable ring has uniform air supply, which can improve the sealing effect.

[0015] The utility model air permeable ring 3 is composed of white corundum, zirconium mullite, graphite, fused quartz, silicon carbide, phenolic resin powder, and alumina powder, and the binder is liquid thermosetting resin and ethanol. The proportion of each component is: 55-65% white corundum, 4-10% zirconium mullite, 10-15% graphite, 2-7% fused quartz, 1-3% silicon carbide, 1-3% phenolic resin powder, 4-8% alumina powder, and 1-2.5% thermosetting resin and 0.5-1.5% ethanol are added during mixing.

[0016] The process of this utility model is as follows:

[0017] Use a layered tube during molding. The layered tube is higher than 30mm and is placed in the middle of the mold base. Add board surface mud around the layered tube with a thickness of 15mm. Then add a breathable layer mud into the layered tube with a thickness of about 20mm. After the breathable layer mud is flattened, place a 1mm thick paraffin sheet on the top of the breathable layer mud. The size of the paraffin sheet should be slightly smaller than or equal to the breathable layer. After laying the wax sheet, lay the main body mud on top to cover the wax sheet and the smooth surface mud; then install and mold. After the outer rubber sleeve of the mold is fixed, the main body mud, slag line mud, and main body mud at the discharge hole position are filled in turn. After filling, the mold cover is installed, tightened, and then put into the cold isostatic press for molding. After molding, the semi-finished product is taken out, and a hole is drilled at the position where the mold is positioned to the height of the wax sheet to form an airway, and then it is inverted into the kiln for curing operation at a curing temperature of 250°C. The purpose of inversion is to allow the paraffin to heat up to liquid after heating and then flow out of the airway. After firing, a steel shell with an argon blowing hole is installed.

[0018] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0019] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An immersion nozzle, comprising an immersion nozzle body and a sliding surface connected to the top thereof as an integral whole, characterized in that: It also includes a breathable ring, which is horizontally embedded in the sliding surface, and the top surface of the breathable ring is flush with the top surface of the sliding surface; the submerged nozzle body has an argon blowing channel, and the breathable ring is connected to the argon gas bottle through the argon blowing channel.

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