Simple fire barrier for heating furnace
Through the design of horizontally superimposing and filling insulation cotton and fiber blanket refractory bricks in ceramic tubes, the problem of the reduction of strength of traditional ceramic fiberboards at high temperatures is solved, and the effect of fire blocking, airflow and temperature uniformity is achieved, providing a safe and durable firewall solution.
Patent Information
- Application Number
- CN202323637441.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2033-12-29
AI Technical Summary
The oxidation of traditional hard ceramic fiberboard at high temperatures leads to a decrease in strength, which may lead to safety hazards such as breakage, fall off of the fire barrier beam and fire penetration of the furnace, making it difficult to effectively adjust the airflow and temperature uniformity in the furnace.
The ceramic tube horizontal superposition method is used to set up a fire wall in the kiln, and the heat insulation cotton and fiber blanket fire bricks are filled between the kiln wall and the ceramic tube. The inner cavity of the ceramic tube is filled with 1500℃ zirconium-containing fiber cotton, and the blind plate and flange are fixed by bolts. Ensure structural stability.
Effectively form a fire wall, regulate airflow, reduce heat dissipation, avoid breakage and drop of fire beams, ensure safe use, and have simple structure, easy loading and unloading and durability.
Smart Images
Figure CN222257676U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of thermal equipment, and in particular relates to a simple fire retaining wall of a heating furnace with a ceramic tube placed horizontally. Background Art
[0002] For continuous production kilns, such as roller kilns, roller hearth furnaces, walking beam furnaces, ring furnaces, etc., the reasonable setting of upper and lower fire beams is of great auxiliary effect in regulating the airflow, furnace pressure, and temperature uniformity in the furnace. Traditional continuous kilns often use hard ceramic fiberboard as fire beams, mainly because the hard ceramic fiberboard has a low density and can withstand a certain high temperature. However, the hard ceramic fiberboard is generally formed by wet method, and organic silicon binders and inorganic binders (such as cationic starch) are added during forming. It has a certain strength in the cold state. When used for fire beams in the furnace, the strength of organic binders oxidized at high temperature is greatly reduced, which will cause erosion of the airflow in the furnace and its own weight, resulting in fragmentation and falling off, causing the fire beam to lose its function and there is a safety hazard of fire in the furnace. Utility Model Content
[0003] The utility model aims to provide a simple fire retaining wall for a heating furnace with horizontally placed ceramic tubes, which is simple in structure, easy to load and unload, safe to use, durable and low in cost, in view of the above-mentioned deficiencies and defects in the prior art.
[0004] The technical scheme of the utility model is: it includes kiln wall, kiln top, kiln bottom and fire retaining wall, etc., which are usually divided into preheating section, roasting section and cooling section according to product production process requirements, and a fire retaining wall composed of horizontally stacked ceramic tubes is set between the kiln temperature sections. That is, a mounting groove is set on the upper inner wall of one side of the kiln wall, a slot hole is set at the upper part of the kiln wall on the other side corresponding to the mounting groove, and a fixing plate and a blind plate for mounting a closed flange are set on the outer wall surface of the slot hole, the ceramic tube is inserted into the slot hole set on the kiln wall, and the end is placed in the mounting groove set on the inner wall of the kiln wall, and horizontally stacked to the bottom of the kiln top, the gap between the mounting groove of the inner wall of the kiln wall and the end of the ceramic tube is filled with thermal insulation cotton, the slot hole and the end of the ceramic tube are filled with fiber blanket refractory bricks, and the end face is fixedly mounted on the closed flange by bolts.
[0005] Furthermore, according to the process requirements of the temperature range in which the kiln is located, ceramic tubes, thermal insulation cotton and fiber blanket refractory bricks with materials corresponding to the temperature zone can be selected.
[0006] Furthermore, the inner cavity of the ceramic tube is filled with thermal insulation cotton. The thermal insulation cotton is 1500°C zirconium-containing fiber cotton, forming a closed fire wall in the width direction. The ceramic tube has good corrosion resistance, thermal stability, oxidation resistance, and high temperature resistance.
[0007] The beneficial effect of the utility model is that since the ceramic tube is installed on the kiln wall in a horizontally stacked manner, a fire-blocking wall is formed in the furnace, which plays the role of fire blocking and airflow regulation, and the corresponding insulation cotton and fiber blanket refractory bricks are filled between the kiln wall and the ceramic tube to effectively reduce heat dissipation. It has the advantages of simple structure, easy loading and unloading, safe use, and durability, and effectively solves the problem of hard ceramic fiberboard being broken and dropped as a fire-blocking beam. Its promotion and application will bring good economic and social benefits to enterprises.
[0008] 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 described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;
[0010] Figure 2 This is a schematic diagram of a partially enlarged structure of the slot hole of the utility model;
[0011] Figure 3 This is a partial enlarged structural diagram of the installation slot of the utility model;
[0012] Figure 4 It is a schematic diagram of the side structure of the utility model.
[0013] In the figure: 1 is the furnace wall, 2 is the furnace roof, 3 is the ceramic tube, 4 is the insulation cotton, 5 is the fixing plate, 6 is the flange, 7 is the blind plate, and 8 is the fiber blanket refractory brick. DETAILED DESCRIPTION
[0014] like Figure 1 , Figure 4 As shown, the simple fire retaining wall of the heating furnace is composed of a kiln wall 1, a kiln roof 2, a kiln bottom and a fire retaining wall. A fire retaining wall composed of horizontally stacked ceramic tubes 3 is set between the temperature sections of the kiln, that is, a mounting groove is set on the upper inner wall of one side of the kiln wall 1, and a slot hole is set at the upper part of the kiln wall 1 on the other side corresponding to the mounting groove, and a fixing plate 5 and a blind plate 7 for mounting a closed flange 6 are set on the outer wall surface of the slot hole. The ceramic tube 3 is inserted into the slot hole set on the kiln wall 1, and the end is placed in the mounting groove set on the inner wall of the kiln wall 1, and is horizontally stacked under the kiln roof 2 to form a closed fire retaining wall in the width direction. The gap between the mounting groove on the inner wall of the kiln wall 1 and the end of the ceramic tube 3 is filled with thermal insulation cotton 4 (such as Figure 3As shown), the slots and the ends of the ceramic tubes 3 are filled with fiber blanket refractory bricks 8, and the blind plate 7 is fixedly installed on the closed flange 6 by bolts on the end face. According to the requirements of the temperature section in which it is located, select the ceramic tube 3, thermal insulation cotton 4 and fiber blanket refractory bricks 8 of the material corresponding to the temperature zone. Thermal insulation cotton can also be filled in the inner cavity of the ceramic tube 3. When implementing the utility model, according to the temperature requirements of the kiln in the product production process, a suitable material can be selected for the ceramic tube 3 to ensure that it can meet the process requirements. The ceramic tube has suitable strength and heat resistance, and is not prone to deformation, cracking and the like in a high temperature environment. At the position where there is a gap between the kiln wall 1 and the ceramic tube 3, fill it with the corresponding thermal insulation cotton 4 and fiber blanket refractory bricks 8 to make it have stable fire-resistant and heat-insulating properties and thermal shock resistance. According to the requirements of the temperature section in which it is located, the ceramic tube 3 of the material corresponding to the temperature zone and the thermal insulation cotton 4 of the corresponding material, and the fiber blanket refractory bricks 8 of the corresponding material can be selected to ensure its temperature resistance. As Figure 2 As shown, the flange fixing plate 5, flange 6 and blind plate 7 can all be welded by a steel plate with a thickness of 5 mm and a material of Q235. The fixing plate 5 is welded to the outside of the kiln wall, the flange 6 is welded to the end face of the flange fixing plate 5, and the blind plate 7 is fixed to the end face of the flange 6 by screws. The utility model has the advantages of reasonable structure, easy disassembly, safe use, durability, etc., and has a very broad application prospect.
[0015] The above description is only a detailed description of a specific embodiment of the utility model, but the structural features of the utility model are not limited thereto. Any changes or modifications made by any technician in the field of the utility model are covered by the scope of the utility model patent.
Claims
1. A simple fire retaining wall for a heating furnace, comprising a kiln wall (1), a kiln top (2), a kiln bottom and the fire retaining wall, characterized in that: A fire retaining wall composed of horizontally stacked ceramic tubes (3) is provided between the temperature sections of the kiln, that is, a mounting groove is provided on the upper inner wall of one side of the kiln wall (1), a slot hole is provided at the upper part of the kiln wall (1) on the other side corresponding to the mounting groove, and a fixing plate (5) and a blind plate (7) for mounting a closed flange (6) are provided on the outer wall surface of the slot hole. The ceramic tube (3) is inserted into the slot hole provided on the kiln wall (1), and the end is placed in the mounting groove provided on the inner wall of the kiln wall (1), and is horizontally stacked to the bottom of the kiln top (2). The gap between the mounting groove on the inner wall of the kiln wall (1) and the end of the ceramic tube (3) is filled with thermal insulation cotton (4), and the slot hole and the end of the ceramic tube (3) are filled with fiber blanket refractory bricks (8). The end face is fixedly mounted on the closed flange (6) by bolts.
2. A simple fire retaining wall for a heating furnace according to claim 1, characterized in that: The inner cavity of the ceramic tube (3) is filled with thermal insulation cotton.