Module assembly type industrial electric furnace

Abstract

The utility model belongs to a module assembly type industrial electric furnace, which comprises a shell, an electric group belt and an insulator, the module assembly type industrial electric furnace is composed of the shell, a heating element module and a top cover module structure, the heating element module is arranged at the lower end of the top cover module structure, and the insulator is arranged on the shell. The heating element module is located in the inner space of the shell through heating element inlets of the shell, the upper end face of the shell is provided with a plurality of heating element inlets at intervals, and the heating element inlets are communicated with the inner space of the shell; a supporting frame of the heating piece module is a rectangular frame, and frame lifting lugs are arranged at the four corners of the top end of the supporting frame. By adopting a module assembly type structure, the heating device can be changed according to the change of the heating quantity required by a user, and has the advantages of high energy heat utilization rate, high repair and replacement speed, simplicity in operation, easiness in transportation and assembly, safety, reliability and good use effect.

Description

Technical Field

[0001] This utility model relates to a modular assembly industrial electric furnace. Background Technology

[0002] In industrial production processes such as acid production, fertilizer production, and benzene production, reactants need to be heated to reach their optimal reaction state. For example, in the sulfuric acid production process, the reaction temperature of the vanadium catenary catalyst used in the converter must be above 400℃ to achieve the optimal state; otherwise, production efficiency will be directly affected. This initial temperature increase requires heating equipment. Traditional electric heating equipment consists of a metal outer shell and multiple sets of heating elements suspended inside the furnace. Resistance wires are typically used as heating elements, wound on upper and lower wire frames. There are a total of 12 upper and lower wire frames in two sets, with each set consisting of 6 resistance wires from the upper and lower wire frames connected in parallel to form a power supply circuit. Currently, industrial electric furnaces are manufactured in one piece at the factory, with a fixed heating capacity that cannot be adjusted according to the user's heating requirements. Furthermore, if the resistance wire breaks or the heating element is damaged, the furnace must be shut down for disassembly and repair, which can take several days. This excessively long repair time severely impacts industrial production. Moreover, the assembly and transportation of the entire machine are inconvenient, affecting user experience and resulting in low energy and thermal utilization rates. Summary of the Invention

[0003] The purpose of this invention is to design a modular industrial electric furnace. It adopts a modular assembly structure, which can be adapted to changes in the heating capacity required by the user. It has the advantages of high energy and heat utilization rate, fast repair and replacement speed, simple operation, easy transportation and assembly, safety and reliability, and good performance.

[0004] Therefore, this utility model includes a shell, an electric belt, and an insulator. The modular industrial electric furnace consists of a shell, a heating element module, and a top cover module structure. The heating element module is located at the lower end of the top cover module structure. The heating element module is located within the shell through the heating element inlet.

[0005] The shell is rectangular and cylindrical. One end of the shell is an air inlet and the other end is an air outlet. The inner wall of the shell is provided with a heat insulation layer. The upper surface of the shell has several heating element inlets at intervals, which are connected to the space inside the shell.

[0006] The heating element module has a rectangular support frame with frame lifting lugs at the four corners of the top of the support frame. Inside the support frame are four sets of positioning plates arranged side by side. Several insulators are fixed at intervals on the positioning plates. The resistance strip is M-shaped after being shaped at high temperature. The resistance strip wraps around each adjacent insulator from top to bottom. The wiring terminals of the resistance strip are located at the top of the support frame.

[0007] The top cover module structure has an area larger than that of a heating element inlet. The lower end face of the top cover has a top cover insulation layer that matches the size of the heating element inlet. The top cover has several metal sleeves that penetrate the cover, and an insulating sleeve is installed inside the metal sleeve. A terminal block is installed inside the insulating sleeve, and the two ends of the terminal block are fixed to the two ends of the insulating sleeve by nuts. The lower end face of the top cover has a top cover lifting lug corresponding to the frame lifting lug. The top cover has screw holes for fixing to the shell.

[0008] As a preferred embodiment of this utility model, the top area of ​​the support frame is smaller than the inlet area of ​​the heating element.

[0009] As a preferred embodiment of this utility model, the housing around the inlet of the heating element is provided with screw holes.

[0010] As a preferred technical solution of this utility model, the heating element module is suspended on the top cover lug of the top cover plate by frame lugs and connecting screws.

[0011] As a preferred embodiment of this utility model, the insulation layer and the top cover insulation layer are made of one of slag wool, ceramic fiber and aluminum silicate fiber felt.

[0012] As a preferred embodiment of this utility model, the screw hole and the screw hole are provided in a corresponding manner.

[0013] As a preferred embodiment of this utility model, a hook is provided in the middle of the upper end surface of the top cover plate.

[0014] Compared with the prior art, the beneficial effects that this utility model can achieve are:

[0015] (1) This utility model can change the number of heating element modules inside the shell according to the change of the user's heating amount, so as to achieve the purpose of changing the heat supply according to the change of the user's heating amount. It has a high energy heat utilization rate. This utility model improves the heat utilization rate by more than 10% compared with the traditional industrial electric furnace, and has a good energy-saving effect.

[0016] (2) This utility model is a modular component composed of a shell, a heating element module, and a top cover module. The heating element module is located at the lower end of the top cover module structure. The heating element module is located within the shell through the heating element placement inlet, which allows for fast repair and replacement. Typically, the time for repairing or replacing faulty components can be reduced to less than one hour, minimizing the impact on industrial production and simplifying operation. The modular component of this utility model is easy to transport and assemble, safe, reliable, and performs well.

[0017] (3) This utility model has a simple structure, is easy to use, has low cost, and has good effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure between the heating element module and the top cover module of this utility model;

[0020] Figure 3 This is a structural schematic diagram of the top cover module of this utility model;

[0021] Figure 4 This is a schematic diagram of the top surface of the shell of this utility model. Detailed Implementation Plan

[0022] To facilitate understanding of the technical means, creative features, objectives, and effects of this utility model, the following detailed embodiments further illustrate the invention. Unless otherwise specified, all materials and reagents used in these embodiments are commercially available. Furthermore, unless explicitly stated or limited otherwise, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and 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] Example 1: As Figures 1 to 4 As shown, a modular industrial electric furnace includes a shell 17, an electric belt 12, and an insulator 9. The modular industrial electric furnace is composed of a shell, a heating element module, and a top cover module structure. The heating element module is located at the lower end of the top cover module structure. The heating element module is located within the shell through a heating element inlet 7.

[0024] The housing is a rectangular cylindrical housing with an air inlet 1 at one end and an air outlet 8 at the other end. The inner wall of the housing is provided with a heat insulation layer 3. The upper surface of the housing has three heating element placement inlets 7 at intervals. Each heating element placement inlet 7 is connected to the inner space 10 of the housing. Each heating element placement inlet is provided with screw holes 19 on the housing around it for fixing the top cover plate 6 of the top cover module with screws.

[0025] The heating element module has a rectangular support frame 13 with frame lugs 14 at its four corners. Four sets of positioning plates 16 are arranged side-by-side inside the support frame, with each set of positioning plates 16 fixed to the corresponding part of the support frame at both ends. Several insulators 9 are fixed at intervals on the positioning plates. A resistance strip 12, after high-temperature setting, is M-shaped and wraps around each adjacent insulator from top to bottom. The terminals of the resistance strip are located at the top of the support frame. In this embodiment, the heating element module can be configured with three heating element placement inlets. The top area of ​​the support frame 13 is smaller than the area of ​​the heating element placement inlets to facilitate the insertion of the heating element module into the housing space 10 through the heating element placement inlets.

[0026] The top cover module structure has a top cover plate 6 with an area larger than the area of ​​a heating element inlet. The heating element inlet is rectangular, and the top cover plate 6 is also rectangular. A top cover insulation layer 5, adapted to the size of the heating element inlet, is located in the center of the lower end face of the top cover plate. When the top cover plate closes the heating element inlet 7, the periphery of the top cover insulation layer supports the sidewalls of the insulation layer around the heating element inlet, thus sealing the inlet. The top cover plate has several metal sleeves 4 penetrating the cover plate. Insulating sleeves are installed inside the metal sleeves 4, and terminals 2 pass through the insulating sleeves. The two ends of the terminals are fixed to the outside of the insulating sleeves by nuts. In use, the upper end of the terminal connects to the power supply, and the lower end connects to the terminal of the resistor strip. A top cover lifting lug 11 is provided on the lower end face of the top cover plate corresponding to the frame lifting lug 14. The top cover plate has screw holes 18 for fixing to the housing. The screw holes and screw posts are correspondingly arranged for fixing the top cover plate to the housing around the heating element inlet using screws. A hook 20 is provided in the middle of the upper end face of the top cover plate to facilitate the lifting of the top cover module with the heating element module.

[0027] The insulation layer and the top cover insulation layer are made of one of the following: slag wool, ceramic fiber, and aluminosilicate fiber felt.

[0028] In use, the shell, heating element module, and top cover module are manufactured separately in the factory. After successful assembly, they are disassembled and transported to the chemical user company. The air outlet and air inlet of the shell are connected to the heating pipeline of the factory that needs to be heated. The number of heating element modules in the shell is determined according to the user's heating needs. If, in this embodiment, the user's heating needs are calculated to require the heat output of two heating element modules, then the two heating element modules are suspended on the top cover lifting lugs of the two top cover plates by the frame lifting lugs and connecting screws 15. The lower end of each terminal is connected to the terminal of each resistor band, forming a top cover module with heating element modules. The top cover plate is lifted by a crane using the hook at the top of the top cover plate, and the heating element module at the lower end of the top cover plate is placed into the inner space 10 of the shell through a heating element placement port on the shell. The top cover plate is then sealed to the shell by screws. The next top cover plate with heating element modules is installed repeatedly. The third heating element placement port is sealed with a top cover plate without heating element modules. The upper end of each terminal of the heating element module is connected to the power supply. This allows the present invention to heat the reactants.

[0029] If the heating element module is damaged, simply remove the damaged heating element module and replace it with a new one.

[0030] Example 2: Unlike Example 1, the shell of this utility model can be lengthened, and 4 to 6 heating elements are placed in the inlet 7 and 4 to 6 top cover module structures and heating element modules are provided to increase the heating amount. The rest is the same as Example 1, so it will not be described again.

[0031] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A modular assembled industrial electric furnace comprising a housing, an electrical assembly and an insulator, characterised in that: The module assembled industrial electric furnace is composed of a shell, a heating element module and a top cover module structure, the heating element module is located at the lower end of the top cover module structure, the heating element module is located in the space in the shell through a heating element placing entrance of the shell, wherein, The shell is a rectangular cylindrical shell, one end of the shell is an air inlet and the other end is an air outlet, an inner wall of the shell is provided with a heat preservation layer, an upper end surface of the shell is provided with a plurality of heating element placing entrances at intervals, and the heating element placing entrances are communicated with the space in the shell; The heating element module is provided with four groups of positioning plates arranged in parallel from top to bottom in the support frame, the positioning plates are fixed with a plurality of insulators at intervals, the resistance belt is shaped as M after high-temperature shaping, the resistance belt is wound around the adjacent insulators from top to bottom, and the wiring ends of the resistance belt are located at the upper end of the support frame; The top cover module structure is provided with a plurality of metal sleeves penetrating the top cover plate, the metal sleeves are provided with insulating sleeves, the insulating sleeves are provided with wiring columns, the wiring columns are fixed at the outer ends of the insulating sleeves through nuts, the lower end surface of the top cover plate is provided with top cover lifting lugs corresponding to the frame lifting lugs, and the top cover plate is provided with screw rod holes for being fixed to the shell.

2. A modular packaged industrial electric furnace as claimed in claim 1, wherein: The top area of the support frame is smaller than the area of the heating element placing entrance.

3. A modular packaged industrial electric furnace as claimed in claim 1, wherein: The shell around the heating element placing entrance is provided with screw holes.

4. A modular packaged industrial electric furnace as claimed in claim 1, wherein: The heating element module is hung on the top cover lifting lugs of the top cover plate through the frame lifting lugs and connecting screw rods.

5. A modular packaged industrial electric furnace as claimed in claim 1, wherein: The heat preservation layer and the top cover heat preservation layer are made of one of slag wool, ceramic fiber and aluminum silicate fiber felt.

6. A modular packaged industrial electric furnace as claimed in claim 1 or 3 wherein: The screw rod holes are correspondingly arranged with the screw holes.

7. A modular packaged industrial electric furnace as claimed in claim 1, wherein: The upper end surface of the top cover plate is provided with a lifting hook in the middle.

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