Electric furnace for the thermal regeneration of molten ceramic sand

Abstract

This utility model discloses an electric furnace for the thermal regeneration of molten ceramic sand, comprising a furnace body. Inside the furnace body are a first heating component, a second heating component, and a third heating component. A door is hinged to one side of the furnace body. A slide rail is fixedly connected to the inner wall of the furnace body, and the slide rail is symmetrically distributed about the bisector of the furnace body. The third heating component and the first heating component have the same structure as the second heating component. The first, second, and third heating components are located on three sides of the inner wall of the furnace body, respectively. A material rack is fixedly connected between the third heating component and the first heating component. The second heating component includes a mounting box slidably connected to the inner wall of the furnace body. A heating rod is threadedly connected to the inner wall of the mounting box, and the mounting box is movably connected to the inner wall of the furnace body. This device allows for the maintenance and replacement of individual heating rods, thereby reducing the maintenance cost of the heating rods.

Description

Technical Field

[0001] This utility model relates to the field of ceramic sand regeneration technology, specifically to an electric furnace for the thermal regeneration of molten ceramic sand. Background Technology

[0002] Ceramic sand is commonly used in casting processes as molding sand or core sand, favored for its good heat resistance and chemical stability. However, during use, ceramic sand can become contaminated with various impurities, such as resins and metal oxides, which reduces its performance and reusability. To restore its performance and reduce waste generation, recycling is particularly important.

[0003] The thermal regeneration method is a process that cleans and revitalizes waste ceramic sand through high-temperature treatment. The process requires the use of an electric furnace. Existing electric furnaces typically have an integrated heating element design, which is prone to damage during use. Therefore, when replacing the heating element, the entire furnace needs to be replaced, resulting in high maintenance costs and necessitating improvement. Utility Model Content

[0004] The purpose of this invention is to provide an electric furnace for the thermal regeneration of molten ceramic sand, in order to solve the problem of high replacement and maintenance costs of heating elements in electric furnaces mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an electric furnace for the regeneration of molten ceramic sand using a thermal method, comprising an electric furnace body, wherein a first heating component, a second heating component, and a third heating component are provided inside the electric furnace body, the third heating component and the first heating component are structurally identical to the second heating component, the first heating component, the second heating component and the third heating component are respectively located on three sides of the inner wall of the electric furnace body, and a material rack is fixedly connected between the third heating component and the first heating component;

[0006] The second heating component includes a mounting box that is slidably connected to the inner wall of the electric furnace body. A heating rod is threadedly connected to the inner wall of the mounting box, and the mounting box is movably connected to the inner wall of the electric furnace body.

[0007] Preferably, a door is hinged to one side of the electric furnace body, and a slide rail is fixedly connected to the inner wall of the electric furnace body. The slide rail is symmetrically distributed about the bisector of the electric furnace body.

[0008] Preferably, sliders are fixedly connected to both sides of the mounting box, and the sliders and slide rails form a sliding connection.

[0009] Preferably, the heating rods are distributed at equal intervals in the horizontal direction about one end of the mounting box, and the other end of the mounting box is integrally connected with a connector.

[0010] Preferably, the outer wall of the connector is fitted with a connecting screw sleeve, one end of which is connected to a fixing head. The connecting screw sleeve, the fixing head, and the connector all form a threaded connection. One end of the fixing head is fixedly connected to the electric furnace body.

[0011] Preferably, the mounting box, fixing head, and connector are all hollow structures used for cable laying.

[0012] Preferably, the top of the electric furnace body is provided with a fan mechanism and an exhaust mechanism, with the exhaust mechanism located on one side of the fan mechanism.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This device can realize the maintenance and replacement of a single heating rod, thereby reducing the maintenance cost of the heating rod.

[0015] (2) This device slides an installation box on the inner wall of the electric furnace body. The installation box can slide out from inside the electric furnace body. At the same time, multiple heating rods are installed on the installation box, which makes it convenient to replace the damaged heating rods and reduces the maintenance cost of the heating rods.

[0016] (3) This device connects a connector, a connecting screw and a fixing head to one end of the mounting box. The connector, connecting screw and fixing head facilitate the laying of cables, thereby facilitating the movement of the mounting box while laying cables. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the electric furnace structure for the regeneration of molten ceramic sand using the thermal method according to this utility model;

[0018] Figure 2 This utility model relates to an electric furnace for the thermal regeneration of molten ceramic sand. Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a top view of the connection between the slide rail and the mounting box of the electric furnace used for the thermal regeneration of molten ceramic sand according to this utility model.

[0020] Figure 4 This is a top view of the material rack of the electric furnace used for the thermal regeneration of molten ceramic sand according to this utility model.

[0021] In the diagram: 1. Electric furnace body; 2. First heating component; 3. Second heating component; 31. Slide rail; 32. Slider; 33. Heating rod; 34. Mounting box; 35. Fixing head; 36. Connecting screw sleeve; 37. Connecting head; 4. Fan mechanism; 5. Exhaust mechanism; 6. Door; 7. Third heating component; 8. Material rack. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4This utility model provides a technical solution: an electric furnace for the thermal regeneration of molten ceramic sand, comprising a furnace body 1, inside which are arranged a first heating component 2, a second heating component 3, and a third heating component 7. A door 6 is hinged to one side of the furnace body 1. A slide rail 31 is fixedly connected to the inner wall of the furnace body 1, and the slide rail 31 is symmetrically distributed about the bisector of the furnace body 1. A fan mechanism 4 and an exhaust mechanism 5 are arranged on the top of the furnace body 1, with the exhaust mechanism 5 located on one side of the fan mechanism 4. This fan mechanism 4 is composed of an intake fan, a filter screen, and a heating tube. By heating the external air and inputting it into the furnace body 1, the furnace body 1 achieves temperature control while simultaneously controlling the temperature difference. The exhaust mechanism 5, composed of an exhaust pipe and an exhaust valve, assists in the flow of gas. The third heating component 7 and the first heating component 2 have the same structure as the second heating component 3. The first heating component 2, the second heating component 3, and the third heating component 7 are located on three sides of the inner wall of the electric furnace body 1. A material rack 8 is fixedly connected between the third heating component 7 and the first heating component 2. The two sides of the material rack 8 are fixed to the inner walls of the slide rails 31 of the third heating component 7 and the first heating component 2, respectively. The second heating component 3 includes a mounting box 34 that is slidably connected to the inner wall of the electric furnace body 1. Slider blocks 32 are fixedly connected to both sides of the mounting box 34, and the sliders 32 and the slide rails 31 form a slidable connection. The structure allows the mounting box 34 to move via slider 32 and slide rail 31, facilitating the movement of the heating rods 33 on the mounting box 34 to the outside of the electric furnace body 1 for inspection and replacement. This also improves the stability of the mounting box 34's movement. The mounting box 34, fixing head 35, and connector 37 are all hollow structures used for cable routing. This structure facilitates cable routing while preventing high-temperature damage to the cables. The mounting box 34, fixing head 35, and connector 37 are all high-temperature resistant ceramic structures. Heating rods 33 are threaded onto the inner wall of the mounting box 34. Multiple heating rods 33 are evenly spaced laterally about one end of the mounting box 34. The other end of the mounting box 34 is integrally connected to the connector 37. This structure utilizes multiple... The heating rod 33 can be replaced individually when it is damaged, reducing the maintenance cost of the heating rod 33. The outer wall of the connector 37 is fitted with a connecting screw sleeve 36. One end of the connecting screw sleeve 36 is connected to a fixing head 35. The connecting screw sleeve 36, the fixing head 35 and the connector 37 are all threaded. One end of the fixing head 35 is fixedly connected to the electric furnace body 1. This structure can separate the mounting box 34 from the fixing head 35 by rotating the connecting screw sleeve 36 onto the fixing head 35, which facilitates the movement of the position of the mounting box 34. The mounting box 34 is movably connected to the inner wall of the electric furnace body 1. The uniformity of heating of the material is ensured by the first heating component 2, the second heating component 3 and the third heating component 7.

[0024] Working principle: When using this electric furnace for the thermal regeneration of molten ceramic sand, if it is necessary to replace the heating rods 33 of the third heating component 7, the first heating component 2, and the second heating component 3, the connecting screw sleeves 36 at one end of the mounting box 34 of the corresponding third heating component 7, the first heating component 2, and the second heating component 3 can be rotated to rotate the connecting screw sleeves 36 onto the fixing head 35 and separate them from the connecting head 37. Then, the mounting box 34 is pulled so that it slides outward from inside the slide rail 31 via the sliders 32 on both sides until the heating rods 33 on the mounting box 34 are completely moved to the outside of the electric furnace body 1. Then, the damaged heating rod 33 is rotated separately to separate it from the mounting box 34 for disassembly and replacement. After replacement, the mounting box 34 is pushed back into the electric furnace body 1, and then the connecting screw sleeves 36 are rotated to connect with the connecting head 37 to complete the replacement of the heating rod 33.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electric furnace for smelting ceramic sand old heat method regeneration, comprising an electric furnace body (1), characterized in that: The electric furnace body (1) is provided with a first heating component (2), a second heating component (3) and a third heating component (7). The third heating component (7) and the first heating component (2) have the same structure as the second heating component (3). The first heating component (2), the second heating component (3) and the third heating component (7) are located on three sides of the inner wall of the electric furnace body (1). A material rack (8) is fixedly connected between the third heating component (7) and the first heating component (2). The second heating component (3) includes a mounting box (34) that is slidably connected to the inner wall of the electric furnace body (1). A heating rod (33) is threadedly connected to the inner wall of the mounting box (34). The mounting box (34) and the inner wall of the electric furnace body (1) are movably connected.

2. The electrically heated furnace for smelting ceramic sand old heat method regeneration according to claim 1, characterized in that: A door (6) is hinged to one side of the electric furnace body (1), and a slide rail (31) is fixedly connected to the inner wall of the electric furnace body (1). The slide rail (31) is symmetrically distributed about the bisecting line of the electric furnace body (1).

3. The electrically heated furnace for smelting ceramic sand old heat method regeneration according to claim 1, characterized in that: The mounting box (34) is fixedly connected to two sides of a slider (32), and the slider (32) and the slide rail (31) form a sliding connection.

4. The electrically heated furnace for smelting ceramic sand old heat method regeneration according to claim 1, characterized in that: The heating rods (33) are distributed horizontally at equal intervals at one end of the mounting box (34), and the other end of the mounting box (34) is integrally connected to the connector (37).

5. The electrically heated furnace for smelting ceramic sand old heat method regeneration according to claim 4, characterized in that: The outer wall of the connector (37) is fitted with a connecting screw sleeve (36), and one end of the connecting screw sleeve (36) is connected to a fixing head (35). The connecting screw sleeve (36), the fixing head (35), and the connector (37) all form a threaded connection. One end of the fixing head (35) is fixedly connected to the electric furnace body (1).

6. The electrically heated furnace for smelting ceramic sand old heat method regeneration according to claim 1, characterized in that: The mounting box (34), fixing head (35) and connector (37) are all hollow structures used for laying cables.

7. The electrically heated furnace for smelting ceramic sand old heat method regeneration according to claim 1, characterized in that: The top of the electric furnace body (1) is provided with a fan mechanism (4) and an exhaust mechanism (5), with the exhaust mechanism (5) located on one side of the fan mechanism (4).

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