Silicon nitride positioning ring of reduction furnace

Abstract

The utility model discloses a reduction furnace silicon nitride positioning ring which comprises a positioning ring body, a positioning ring is integrally formed in the middle of the bottom end of the positioning ring body, a positioning groove is formed in the middle of the positioning ring, and a positioning assembly and an insulation sealing gasket are positioned between the positioning ring and the positioning groove. The insulation sealing gasket is located on the surface of the positioning assembly, a reinforcing rib frame is fixed to the position, connected with the positioning assembly, of the interior of the positioning ring body, a quick adhesion gasket is positioned on the surface of the bottom of the positioning ring body, the positioning groove is the inner diameter of the positioning ring body, the inner diameter is 87 mm, and the outer diameter of the positioning ring body is 124 mm. The silicon nitride positioning ring of the reduction furnace is composed of a silicon nitride structure, the inner diameter of the silicon nitride positioning ring is 87mm, the silicon nitride positioning ring is tightly attached to an insulation sleeve, the outer diameter of the silicon nitride positioning ring is 124mm, the silicon nitride positioning ring is tightly attached to a heat insulation cover, the heat insulation cover is fixed and cannot move to touch and approach graphite to cause grounding lacking, and the qualified rate of finished products produced by the reduction furnace is improved.

Description

Technical Field

[0001] The utility model relates to the field of reduction furnaces, in particular to a silicon nitride positioning ring of a reduction furnace. Background Art

[0002] The silicon nitride positioning ring of the reduction furnace is a supporting device used for positioning inside the reduction furnace. It reduces metal oxides into metals and is usually used to refine steel, ferroalloys, manganese alloys, etc. The reduction reaction requires high temperature, high pressure and a certain reducing agent. A silicon nitride heat shield is installed inside for protection. With the continuous development of science and technology, people have higher and higher requirements for the manufacturing process of silicon nitride positioning rings for reduction furnaces.

[0003] The existing silicon nitride positioning ring for reduction furnace has certain drawbacks when in use. During the operation of the reduction furnace, a large number of furnaces run for about 20 hours, and there are individual grounding items that lead to missing items. After investigation, it was found that the silicon nitride heat insulation cover was placed eccentrically, closer to graphite or touching graphite. After operation, silicon was formed, resulting in missing grounding items. When placed manually, there is still a bias, which brings certain adverse effects to the actual use process. For this reason, we propose a silicon nitride positioning ring for reduction furnace. Utility Model Content

[0004] Technical problem solved: In view of the shortcomings of the prior art, the utility model provides a silicon nitride positioning ring for a reduction furnace, which is composed of a silicon nitride structure, has an inner diameter of 87 mm and is close to the insulating sleeve, and an outer diameter of 124 mm and is close to the heat insulation cover, so that the heat insulation cover is fixed and cannot move to touch the graphite to cause a grounding defect, thereby improving the qualified rate of finished products produced by the reduction furnace, and can effectively solve the problems in the background technology.

[0005] Technical solution: To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a reduction furnace silicon nitride positioning ring, including a positioning ring body, a positioning ring is integrally formed in the middle of the bottom end of the positioning ring body, a positioning groove is opened in the middle of the positioning ring, a positioning assembly and an insulating sealing gasket are positioned between the positioning ring and the positioning groove, the insulating sealing gasket is located on the surface of the positioning assembly, a reinforcing rib frame is fixed at the position where the positioning assembly is connected inside the positioning ring body, and a quick-sticking pad is positioned on the bottom surface of the positioning ring body.

[0006] Preferably, the positioning groove is the inner diameter of the positioning ring body, and the inner diameter is 87 mm, and the outer diameter of the positioning ring body is 124 mm.

[0007] Preferably, the inner diameter of the positioning ring body is in close contact with the insulating sleeve, and the outer diameter of the positioning ring body is in close contact with the heat insulation cover, and locates the position of the heat insulation cover.

[0008] Preferably, the positioning ring body is a silicon nitride structure, the insulating sealing pad is bonded and positioned with the positioning assembly, the bottom of the positioning ring body is quickly fixed by a quick-adhesive pad, and the positioning ring body and the positioning ring are integrally formed by die-casting.

[0009] Preferably, the positioning ring body includes a thermal insulation sheet, a silicon nitride sheet, a metal fiber sheet, a graphite sheet and a positioning spacer, the graphite sheet is located on the surface of the positioning spacer, the metal fiber sheet is located on the surface of the graphite sheet, the silicon nitride sheet is located on the surface of the metal fiber sheet, and the thermal insulation sheet is located on the surface of the silicon nitride sheet.

[0010] Preferably, the heat insulation sheet, silicon nitride sheet, metal fiber sheet, graphite sheet and positioning spacer are integrally formed into a positioning ring body by die-casting.

[0011] Beneficial effects: Compared with the prior art, the utility model provides a silicon nitride positioning ring for a reduction furnace, which has the following beneficial effects: the silicon nitride positioning ring for a reduction furnace is composed of a silicon nitride structure, with an inner diameter of 87 mm and close to the insulating sleeve, an outer diameter of 124 mm and close to the heat insulation cover, so that the heat insulation cover is fixed and cannot move to touch the graphite to cause a grounding defect, thereby improving the qualified rate of finished products produced by the reduction furnace, the inner diameter of the positioning ring body is close to the insulating sleeve, the outer diameter of the positioning ring body is close to the heat insulation cover, and the position of the heat insulation cover is positioned, the positioning ring body is a silicon nitride structure, the insulating sealing gasket and the positioning assembly are bonded and positioned, the bottom of the positioning ring body is quickly fixed by a quick-sticking pad, the positioning ring body and the positioning ring are integrally formed by die-casting, the heat insulation sheet, silicon nitride sheet, metal fiber sheet, graphite sheet and positioning spacer are integrally formed by die-casting into a positioning ring body, thereby increasing the use strength of the positioning ring body, the entire reduction furnace silicon nitride positioning ring has a simple structure, is easy to operate, and has better use effect than the traditional method. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a schematic diagram of the overall structure of a silicon nitride positioning ring for a reduction furnace.

[0013] Figure 2 The utility model is a schematic structural diagram of a cross-section of a positioning ring body in a silicon nitride positioning ring for a reduction furnace.

[0014] Figure 3 This is a structural schematic diagram of an enlarged view of point A in a silicon nitride positioning ring of a reduction furnace of the utility model.

[0015] Figure 4 The utility model is a schematic diagram of the structure of the decomposed positioning ring body in a silicon nitride positioning ring of a reduction furnace.

[0016] In the figure: 1. Positioning ring body; 2. Positioning ring; 3. Positioning groove; 4. Insulating sealing gasket; 5. Reinforcing rib frame; 6. Quick-adhesive pad; 7. Positioning assembly; 8. Thermal insulation sheet; 9. Silicon nitride sheet; 10. Metal fiber sheet; 11. Graphite sheet; 12. Positioning spacer. DETAILED DESCRIPTION

[0017] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments, but those skilled in the art will understand that the embodiments described below are part of the embodiments of the utility model, rather than all of the embodiments, and are only used to illustrate the utility model, and should not be considered to limit the scope of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the utility model. If the specific conditions are not specified in the embodiments, they are carried out according to conventional conditions or conditions recommended by the manufacturer. If the manufacturer is not specified for the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0018] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] like Figure 1-4As shown, a silicon nitride positioning ring for a reduction furnace comprises a positioning ring body 1, a positioning ring 2 is integrally formed in the middle of the bottom end of the positioning ring body 1, a positioning groove 3 is opened in the middle of the positioning ring 2, a positioning component 7 and an insulating sealing gasket 4 are positioned between the positioning ring 2 and the positioning groove 3, the insulating sealing gasket 4 is located on the surface of the positioning component 7, a reinforcing rib frame 5 is fixed at the position where the positioning component 7 is connected inside the positioning ring body 1, a quick-sticking pad 6 is positioned on the bottom surface of the positioning ring body 1, which is composed of a silicon nitride structure, has an inner diameter of 87 mm and is close to the insulating sleeve, and has an outer diameter of 124 mm and is close to the heat insulation cover, so that the heat insulation cover is fixed and cannot move to touch the graphite to cause grounding deficiency, thereby improving the qualified rate of finished products produced by the reduction furnace.

[0021] Furthermore, the positioning groove 3 is the inner diameter of the positioning ring body 1, and the inner diameter is 87 mm, and the outer diameter of the positioning ring body 1 is 124 mm.

[0022] Furthermore, the inner diameter of the positioning ring body 1 is in close contact with the insulating sleeve, and the outer diameter of the positioning ring body 1 is in close contact with the heat insulation cover, thereby locating the position of the heat insulation cover.

[0023] Furthermore, the positioning ring body 1 is a silicon nitride structure, the insulating sealing pad 4 is bonded and positioned with the positioning assembly 7, the bottom of the positioning ring body 1 is quickly fixed by the quick-adhesive pad 6, and the positioning ring body 1 and the positioning ring 2 are integrally formed by die-casting.

[0024] Furthermore, the positioning ring body 1 includes a thermal insulation sheet 8, a silicon nitride sheet 9, a metal fiber sheet 10, a graphite sheet 11 and a positioning spacer 12. The graphite sheet 11 is located on the surface of the positioning spacer 12, the metal fiber sheet 10 is located on the surface of the graphite sheet 11, the silicon nitride sheet 9 is located on the surface of the metal fiber sheet 10, and the thermal insulation sheet 8 is located on the surface of the silicon nitride sheet 9.

[0025] Furthermore, the heat insulation sheet 8 , the silicon nitride sheet 9 , the metal fiber sheet 10 , the graphite sheet 11 and the positioning spacer 12 are integrally formed into the positioning ring body 1 by die-casting.

[0026] Working principle: The utility model includes a positioning ring body 1, a positioning ring 2, a positioning groove 3, an insulating sealing pad 4, a reinforcing rib frame 5, a quick-adhesive pad 6, a positioning assembly 7, a heat insulation sheet 8, a silicon nitride sheet 9, a metal fiber sheet 10, a graphite sheet 11, and a positioning spacer 12. When in use, the inner diameter of the positioning ring body 1 is in close contact with the insulating sleeve, the outer diameter of the positioning ring body 1 is in close contact with the heat insulation cover, and the position of the heat insulation cover is positioned. The positioning ring body 1 is a silicon nitride structure, the insulating sealing pad 4 is bonded and positioned with the positioning assembly 7, and the positioning ring body 1 is The bottom is quickly fixed by the quick-adhesive pad 6, the positioning ring body 1 and the positioning ring 2 are integrally formed by die-casting, and the heat insulation sheet 8, silicon nitride sheet 9, metal fiber sheet 10, graphite sheet 11 and positioning spacer 12 are integrally formed by die-casting to form the positioning ring body 1, thereby increasing the use strength of the positioning ring body 1. It is composed of a silicon nitride structure, with an inner diameter of 87 mm and close to the insulating sleeve, and an outer diameter of 124 mm and close to the heat insulation cover, so that the heat insulation cover is fixed and cannot move to touch the graphite to cause grounding deficiency, thereby improving the qualified rate of finished products produced by the reduction furnace.

[0027] It should be noted that, in this article, relational terms such as first and second (number one, number two), etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0028] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A silicon nitride positioning ring for a reduction furnace, comprising a positioning ring body (1), characterized in that: A positioning ring (2) is integrally formed in the middle of the bottom end of the positioning ring body (1), a positioning groove (3) is provided in the middle of the positioning ring (2), a positioning component (7) and an insulating sealing gasket (4) are positioned between the positioning ring (2) and the positioning groove (3), the insulating sealing gasket (4) is located on the surface of the positioning component (7), a reinforcing rib frame (5) is fixed at a position connected to the positioning component (7) inside the positioning ring body (1), and a quick-adhesive pad (6) is positioned on the bottom surface of the positioning ring body (1).

2. The silicon nitride positioning ring for a reduction furnace according to claim 1, characterized in that: The positioning groove (3) is the inner diameter of the positioning ring body (1), and the inner diameter is 87 mm. The outer diameter of the positioning ring body (1) is 124 mm.

3. The silicon nitride positioning ring for a reduction furnace according to claim 1, characterized in that: The inner diameter of the positioning ring body (1) is in close contact with the insulating sleeve, and the outer diameter of the positioning ring body (1) is in close contact with the heat insulation cover, and locates the position of the heat insulation cover.

4. The silicon nitride positioning ring for a reduction furnace according to claim 1, characterized in that: The positioning ring body (1) is a silicon nitride structure, the insulating sealing pad (4) and the positioning assembly (7) are bonded and positioned, the bottom of the positioning ring body (1) is quickly fixed by a quick-adhesive pad (6), and the positioning ring body (1) and the positioning ring (2) are integrally formed by die-casting.

5. The silicon nitride positioning ring for a reduction furnace according to claim 1, characterized in that: The positioning ring body (1) comprises a heat insulating sheet (8), a silicon nitride sheet (9), a metal fiber sheet (10), a graphite sheet (11) and a positioning spacer (12); the graphite sheet (11) is located on the surface of the positioning spacer (12); the metal fiber sheet (10) is located on the surface of the graphite sheet (11); the silicon nitride sheet (9) is located on the surface of the metal fiber sheet (10); and the heat insulating sheet (8) is located on the surface of the silicon nitride sheet (9).

6. The silicon nitride positioning ring for a reduction furnace according to claim 5, characterized in that: The heat insulation sheet (8), the silicon nitride sheet (9), the metal fiber sheet (10), the graphite sheet (11) and the positioning spacer (12) are integrally formed into a positioning ring body (1) by die-casting.

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