Side opening door furnace arc flow guiding device

Abstract

The utility model discloses a kind of side opening door hearth arc flow guide devices, it solves the flame direction difficult to control in prior art hearth, high-temperature flue gas circulation flow is not smooth and the like problems, it is characterized by: burner is installed on hearth side wall, evenly distributed along hearth length direction, material rack is arranged between burner and the gap of burner, flow guide pile is additionally arranged between furnace bottom and furnace door, the flow guide pile is formed by high-temperature castable pouring, it is through structure along hearth length direction, bottom is embedded between furnace bottom refractory brick, exposed part in hearth is circular arc shape, facing burner fire-facing surface, effectively guide the flame and high-temperature flue gas flow direction of burner, promote hearth atmosphere circulation, strengthen furnace door sealing, reduce furnace gas leakage.With the advantages of reasonable structure, convenient installation, energy saving and consumption reduction, safe use and the like, application prospect is very broad.

Description

Technical Field

[0001] This utility model belongs to the field of thermal equipment technology, specifically relating to a side-opening furnace arc flow guiding device. Background Technology

[0002] Side-opening box furnaces are a common type of intermittent heating equipment used in industry. They are mainly used for heat treatment of long, large steel pipes, billets, castings, etc. The furnace door is located on the side for easy material loading and unloading, while the burners are located on the other side. The furnace body is typically constructed using refractory bricks or high-temperature resistant fiber folded blocks, resulting in a generally rectangular shape within the furnace chamber. However, a rectangular furnace chamber can cause problems such as the burner flame or high-temperature flue gas impacting the furnace chamber or door, turbulent flow of high-temperature flue gas within the furnace, and poor circulation. This is detrimental to temperature uniformity within the furnace, affecting the heat treatment of the workpiece, increasing fuel consumption costs, and also impacting the service life of the refractory materials or the furnace door. Utility Model Content

[0003] The purpose of this utility model is to address the structural defects of existing side-opening box-type furnaces by providing a scientifically designed, atmosphere-stable, energy-saving, and safe-to-use arc-shaped flow guiding device for side-opening furnaces.

[0004] The technical solution of this utility model is as follows: It includes burners, furnace walls, furnace bottom, furnace door, material rack, material and flue gas outlet, etc. The burners are installed at equal intervals along the length of the furnace on the furnace wall at the bottom of the furnace. The material rack is placed along the length of the furnace in the gap between the burners, leaving a flow channel for the flame and flue gas. The bottom is fixedly installed on the refractory bricks of the furnace bottom. A flow guide pile is set between the furnace bottom and the furnace door. The flow guide pile is located at the corner of the furnace. The upper part of the flow guide pile faces the burner in an arc shape, and the lower part is embedded in the furnace bottom. The furnace door and the flow guide pile are pressed and sealed.

[0005] Furthermore, the material of the diversion pile should be selected according to the actual use, using a castable material that is resistant to high temperature, flame, wear and erosion. It should be made by casting in place after the refractory bricks at the bottom of the furnace are laid.

[0006] Furthermore, the arc angle and arc radius of the guide pile towards the burner can be adjusted according to the actual flue gas velocity and flow rate emitted by the burner.

[0007] Furthermore, the bottom of the guide pile needs to be embedded in the furnace bottom, and the height of its arc surface protruding from the furnace bottom is determined by the height of the forklift used to load and unload materials and the size of the furnace door.

[0008] The beneficial effects of this invention are as follows: the flame and high-temperature flue gas generated by the burner still possess a certain flow velocity and impact force after passing through the channel. The arc-shaped guide pile's fire-facing surface effectively counteracts the impact of the high-temperature flue gas, acting as a guide and buffer, allowing the flue gas to smoothly and evenly transition from horizontal to vertical upward flow, forming a process of flue gas circulating around the material within the furnace, which is beneficial for the uniformity of the furnace temperature. Simultaneously, the guide pile prevents the furnace door from being directly impacted by the burner flame, preventing high temperatures from damaging the furnace door structure and extending its service life. Furthermore, the bottom of the guide pile is embedded in the furnace bottom, ensuring a tight bond between the heat-resistant bricks and the guide pile, effectively preventing pressure from being applied to the guide pile when the furnace door is pressed inward, thus preventing the guide pile from tilting or falling over. The guide pile, made of castable refractory, forms a sealing surface when pressed tightly against the furnace door, reducing furnace gas leakage.

[0009] The following structural drawings further illustrate this utility model. Attached Figure Description

[0010] Figure 1 This is a side view sectional structural diagram of the present invention; Figure 2 This is a top view sectional structural diagram of the present invention; Figure 3 This is a schematic diagram illustrating the structure of this utility model in other application areas.

[0011] In the diagram: 1 is the burner, 2 is the furnace wall, 3 is the furnace bottom, 4 is the flow guide pile, 5 is the furnace door, 6 is the material rack, 7 is the material, 8 is the flue gas outlet, and 9 is the regenerative burner.

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only schematic diagrams of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Detailed Implementation

[0013] like Figure 1 , 2As shown, a side-opening furnace arc-shaped flow guiding device consists of burners 1, furnace walls 2, furnace bottom 3, furnace door 5, material rack 6, material 7, and flue gas outlet 8. The furnace walls 2 are typically constructed of refractory bricks or refractory fiber blocks, the furnace bottom 3 is constructed of load-bearing refractory bricks, and the material rack 6 is made of high-temperature castings or prefabricated high-temperature castables depending on the operating temperature and process. The burners 1 are evenly spaced along the length of the furnace, and the material rack 6 is located between the burners, providing a channel for the flame. A flow guiding pile 4 is added between the furnace bottom 3 and the furnace door 5. The flow guiding pile 4 is made of continuous refractory and wear-resistant castable. The bottom of the flow guiding pile 4 is embedded between the refractory bricks of the furnace bottom 3, and the furnace door 5 is pressed tightly against the flow guiding pile 5 for a seal. The radius and angle of the arc face of the guide pile 4 need to be adjusted according to the actual burner usage and furnace temperature. Its embedment depth and protrusion height from the furnace bottom need to be determined based on the height of the forklift and the size of the furnace door. When the high-temperature flue gas generated by the burner 1 is ejected, the guide pile 4 guides the flow direction of the flue gas, promoting its circulation around the material, improving the temperature uniformity within the furnace, and preventing excessively high or low temperatures at any point. Simultaneously, guiding the flue gas flow prevents direct impact from the high-temperature flue gas on the furnace door, effectively extending the furnace door's service life. Furthermore, the furnace door 5 is pressed tightly against the guide pile 4, forming a sealing surface, reducing the risk of furnace gas leakage and lowering fuel consumption. The guide pile 4 is embedded in the furnace bottom 3, preventing it from tilting or falling to the left due to the pressure of the seal when the furnace door 5 is pressed tightly against it. This device has advantages such as reasonable structure, stable atmosphere, energy saving, and safe operation, and can be widely used in side-opening box furnaces.

[0014] like Figure 3 The diagram illustrates different application areas of this utility model. The figure shows a simplified schematic of a regenerative box furnace. When one regenerative burner produces high-temperature flue gas, the other regenerative burner serves as the exhaust port; the two alternate between combustion and exhaust. The high-temperature flue gas produced by one regenerative burner, after passing through the arc-shaped flow guide device, circulates more smoothly and evenly within the furnace, improving temperature uniformity, preventing erosion of the furnace walls, and effectively extending the furnace's service life.

[0015] The above description is only a detailed description of specific embodiments of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the scope of the utility model patent.

Claims

1. A side-opening furnace arc flow guiding device, comprising a burner (1), a furnace wall (2), a furnace bottom (3), a furnace door (5), a material rack (6), material (7), and a flue gas outlet (8), characterized in that: The burners (1) are installed at equal intervals on the furnace wall (2) at the bottom of the furnace along the length of the furnace. The feed rack (6) is placed in the gap between the burners along the length of the furnace and is fixedly installed on the refractory bricks of the furnace bottom (3). A flow guide (4) is set between the furnace bottom (3) and the furnace door (5). The flow guide (4) is located at the corner of the furnace. The upper part faces the burner (1) in an arc shape, and the lower part is embedded in the furnace bottom (3). The furnace door (5) and the flow guide (4) are pressed and sealed together.

2. The arc-shaped flow guiding device for a side-opening furnace according to claim 1, characterized in that: The material of the guide pile (4) should be selected according to the actual use, and the casting material should be high temperature resistant, flame resistant, wear resistant and erosion resistant. After the refractory bricks at the bottom of the furnace are laid, the casting should be carried out in place.

3. A side-opening furnace arc flow guiding device according to claim 1 or 2, characterized in that: The bottom of the guide pile (4) needs to be embedded in the furnace bottom (3), and the height of its arc surface protruding from the furnace bottom should be determined by the height of the forklift for placing and taking materials (7) and the size of the furnace door (5).

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