A firing furnace for refractory brick production

Abstract

The utility model provides a kind of firing furnace for firebrick production, including furnace body, the inside of furnace body is provided with firing cavity;The both sides inner wall of firing cavity is fixedly installed with multiple heating components, and multiple the heating components are evenly distributed up and down;The top of furnace body is provided with waste gas treatment mechanism, and waste gas treatment mechanism is communicated with firing cavity;One side of furnace body is provided with furnace door;The bottom of firing cavity is provided with bearing plate.The utility model can guarantee firing temperature stability, to significantly improve the firing quality of firebrick.

Description

Technical Field

[0001] This utility model relates to the field of firing furnace technology, and in particular to a firing furnace for producing refractory bricks. Background Technology

[0002] Refractory bricks, as an indispensable key material in high-temperature industrial fields, are widely used in the construction of high-temperature kilns in industries such as metallurgy, building materials, and chemicals. Their quality directly affects the service life and production safety of the kiln. The firing process is the core process that determines the performance of refractory bricks. It requires precise temperature control and sufficient firing time in a high-temperature environment to allow the brick blanks to complete the transformation of their physical and chemical properties, forming a stable structure and excellent high-temperature resistance.

[0003] The firing furnaces used for refractory brick production in the market still have many shortcomings in practical applications. In terms of temperature control, the heating components of traditional firing furnaces are not rationally arranged, and they often use single-sided or local heating methods, resulting in uneven temperature distribution in the firing chamber. Different parts of the refractory brick blank are heated differently, which can easily lead to local over-firing or under-firing. This seriously affects the key indicators of refractory bricks such as strength and high-temperature resistance, and reduces the product qualification rate. Utility Model Content

[0004] To address the above problems, this utility model provides a firing furnace for refractory brick production.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] A firing furnace for producing refractory bricks includes a furnace body with a firing chamber inside. Multiple heating components are fixedly installed on both inner walls of the firing chamber, and the multiple heating components are evenly distributed vertically. A waste gas treatment mechanism is provided at the top of the furnace body and is connected to the firing chamber. A furnace door is provided on one side of the furnace body. A support plate is provided at the bottom of the firing chamber.

[0007] Preferably, the heating assembly includes heating wires disposed on the inner wall of the firing chamber.

[0008] Preferably, the waste gas treatment mechanism includes a waste gas collection hood, which is fixedly installed on the top of the furnace body and connected to the firing chamber. An exhaust pipe is connected to the top of the waste gas collection hood, and a purification box is connected to the other end of the exhaust pipe.

[0009] Preferably, the furnace door and the furnace body are connected by a sealing assembly; the sealing assembly includes a sealing groove disposed at the opening of the furnace body, and a sealing block that matches the sealing groove is disposed on the edge of the furnace door.

[0010] Preferably, the support plate is horizontally positioned at the bottom center of the firing chamber.

[0011] Preferably, at least three sets of heating components are provided on each side of the inner wall of the firing chamber, and are arranged at equal intervals along the vertical direction.

[0012] Preferably, the bottom opening of the exhaust gas collection hood is directly connected to the top opening of the firing chamber, and the exhaust gas collection hood is fixedly connected to the top of the furnace body by welding or bolts.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The heating components are arranged in multiple groups at equal intervals on both sides of the inner wall of the firing chamber. Combined with the serpentine distribution of heating wires, this makes the temperature distribution in the chamber more uniform and avoids the problem of excessive local temperature difference in refractory bricks. The support plate is made of high-temperature resistant ceramic material and is placed horizontally, which can make the bottom of the brick uniformly heated and reduce local overheating or underfiring. At the same time, the good sealing structure reduces heat loss and ensures stable firing temperature, thereby significantly improving the firing quality of refractory bricks.

[0015] 2. The exhaust gas treatment unit efficiently collects exhaust gas through a conical exhaust gas collection hood. After being treated by the spray layer and activated carbon adsorption layer inside the purification chamber, the exhaust gas can meet the emission standards and reduce environmental pollution. The equipped temperature control system can accurately regulate the temperature, and the high-temperature resistant quartz glass observation window on the furnace door allows operators to observe the internal situation in real time, improving the convenience and safety of operation. Attached Figure Description

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

[0017] Figure 2 This is a side view of the present invention.

[0018] Figure 3 This is a top view of the present invention;

[0019] In the diagram: 1 Furnace body, 2 Firing chamber, 3 Heating components, 4 Waste gas treatment mechanism, 5 Furnace door, 6 Sealing components, 7 Support plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" 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; 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 utility model based on the specific circumstances.

[0023] Reference Figure 1-3 A firing furnace for producing refractory bricks comprises a furnace body 1, a firing chamber 2, a heating assembly 3, a waste gas treatment mechanism 4, a furnace door 5, a sealing assembly 6, and a support plate 7. The furnace body 1, serving as the basic frame of the entire equipment, is forged from high-strength, high-temperature resistant steel, effectively resisting the high-temperature radiation within the firing chamber and providing stable support for the internal components.

[0024] The firing chamber 2, as the core space for refractory brick firing, has precisely calculated internal dimensions to accommodate different quantities and specifications of refractory brick blanks according to actual production needs. The inner wall of the chamber is paved with high-temperature resistant castable, a material with extremely strong high-temperature resistance and heat insulation effect, which can reduce heat loss and ensure stable temperature inside the chamber.

[0025] Heating assembly 3 is a key component for achieving high-temperature firing, comprising heating wires installed on the inner wall of the firing chamber 2. The heating wires are made of nickel-chromium alloy, a material known for its high-temperature resistance, strong oxidation resistance, and long service life, allowing for stable operation in high-temperature environments. At least three sets of heating assemblies 3 are installed on each side of the inner wall of the firing chamber 2, arranged at equal intervals along the vertical direction. Each set consists of multiple heating wires distributed in a serpentine pattern within the mounting grooves on the inner wall of the chamber. This distribution ensures a more uniform temperature distribution within the firing chamber 2, preventing excessive local temperature differences and guaranteeing uniform heating of the refractory bricks, thus improving firing quality. During operation, the heating wires generate heat through electric heating, which is then transferred to the refractory brick blanks through thermal radiation and conduction, achieving high-temperature firing of the brick blanks.

[0026] The waste gas treatment unit 4 is used to treat the waste gas generated during the firing process to avoid environmental pollution. It includes a waste gas collection hood with a conical structure design. The bottom opening of the hood directly connects to the top opening of the firing chamber 2. This design maximizes the collection of waste gas generated during firing. The waste gas collection hood is fixed to the top of the furnace body 1 by welding or bolting. When welding, the weld seam is continuous and full to ensure connection strength and sealing. When bolting, high-temperature resistant bolts are selected, and high-temperature resistant sealing gaskets are placed at the connection points to further ensure a tight seal. An exhaust pipe is connected to the top of the waste gas collection hood. The exhaust pipe is made of high-temperature resistant stainless steel to ensure smooth discharge of waste gas. The other end of the exhaust pipe is connected to a purification box, which contains a multi-layer purification device, including an activated carbon adsorption layer and a spray layer. The waste gas first enters the spray layer, where it comes into full contact with the spray liquid to remove dust and some harmful gases. Then, it passes through the activated carbon adsorption layer to adsorb the remaining harmful gases. After purification, the waste gas meets emission standards before being released into the atmosphere.

[0027] The furnace door 5 is used for loading and unloading refractory brick blanks and sealing the firing chamber. It is made of the same high-strength, high-temperature resistant steel as the furnace body and filled with insulation material to reduce heat loss. The furnace door 5 is connected to the furnace body 1 by a sealing assembly 6, which includes a sealing groove at the opening of the furnace body 1 and a sealing block on the edge of the furnace door 5 that matches the sealing groove. A high-temperature resistant sealing strip is embedded inside the sealing groove; the sealing block is made of high-temperature resistant silicone rubber and its shape perfectly matches the sealing groove. When the furnace door is closed, the sealing block is tightly embedded in the sealing groove and in close contact with the sealing strip, forming an effective sealing structure that minimizes heat leakage, ensures temperature stability within the firing chamber 2, and prevents exhaust gas from leaking out from the door gaps.

[0028] The support plate 7 is horizontally positioned at the bottom center of the firing chamber 2 to hold the refractory brick blanks. The support plate is made of high-temperature resistant ceramic material, with a smooth and flat surface, possessing excellent high-temperature resistance and load-bearing capacity. The size of the support plate is slightly smaller than the bottom size of the firing chamber 2 to ensure stable placement within the chamber. During firing, the support plate evenly transfers heat, ensuring uniform heating of the bottom of the refractory brick blanks and preventing localized overheating or underfiring.

[0029] In addition, for ease of operation and control, the furnace is equipped with a temperature control system. Thermocouples monitor the temperature inside the firing chamber 2 in real time and transmit the temperature signal to the control system. The control system automatically adjusts the power of the heating components 3 according to the set temperature curve, ensuring precise temperature control during the firing process. Simultaneously, an observation window made of high-temperature resistant quartz glass is installed on the furnace door 5, allowing operators to observe the firing process of the refractory bricks inside the firing chamber at any time, promptly identifying and addressing any problems.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A firing furnace for producing refractory bricks, comprising a furnace body (1), characterized in that: The furnace body (1) is provided with a firing chamber (2) inside; multiple heating components (3) are fixedly installed on both sides of the inner wall of the firing chamber (2), and the multiple heating components (3) are evenly distributed vertically; a waste gas treatment mechanism (4) is provided on the top of the furnace body (1), and the waste gas treatment mechanism (4) is connected to the firing chamber (2); a furnace door (5) is provided on one side of the furnace body (1); a support plate (7) is provided at the bottom of the firing chamber (2).

2. The firing furnace for refractory brick production according to claim 1, characterized in that: The heating assembly (3) includes heating wires disposed on the inner wall of the firing chamber (2).

3. The firing furnace for refractory brick production according to claim 1, characterized in that: The waste gas treatment mechanism (4) includes a waste gas collection hood, which is fixedly installed on the top of the furnace body (1) and connected to the firing chamber (2). The top of the waste gas collection hood is connected to an exhaust pipe, and the other end of the exhaust pipe is connected to a purification box.

4. The firing furnace for refractory brick production according to claim 1, characterized in that: The furnace door (5) is connected to the furnace body (1) by a sealing assembly (6); the sealing assembly (6) includes a sealing groove provided at the opening of the furnace body (1), and the edge of the furnace door (5) is provided with a sealing block that matches the sealing groove.

5. The firing furnace for refractory brick production according to claim 1, characterized in that: The support plate (7) is horizontally positioned at the bottom center of the firing chamber (2).

6. The firing furnace for refractory brick production according to claim 2, characterized in that: The heating components (3) are provided in at least three sets on each side of the inner wall of the firing chamber (2) and are arranged at equal intervals in the vertical direction.

7. The firing furnace for refractory brick production according to claim 3, characterized in that: The bottom opening of the exhaust gas collection hood is directly connected to the top opening of the firing chamber (2), and the exhaust gas collection hood is fixedly connected to the top of the furnace body (1) by welding or bolts.

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