Embedded electric heating device
By embedding electric heating components on both side walls of the roller kiln, the problem of uneven product heating in traditional roller kilns is solved, product temperature uniformity and simplified maintenance of the device are achieved, and heating efficiency and safety are improved.
Patent Information
- Application Number
- CN202423134518.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-12-19
AI Technical Summary
Products in traditional roller kilns are heated unevenly, especially the temperature difference between the middle and the two ends is obvious, which cannot meet production needs.
Additional heating installation holes are added on both side walls of the kiln, and electric heating components are embedded, including heating bricks, mounting flanges, end face grooves, heating resistance wires and wires, to form a uniform heating structure and ensure uniform heating of the product.
The uniformity of product heating temperature is achieved, the installation and maintenance of the device are simplified, and the safety and energy saving of the heating device are improved.
Smart Images
Figure CN223425689U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of kiln temperature control, in particular to an embedded electric heating device for a roller kiln. Background Art
[0002] A roller hearth kiln is a highly efficient kiln. Traditional roller hearth kilns typically utilize rollers inserted between the two side walls of the kiln, which transport the product to be fired and fire it within the kiln, eliminating the need for a kiln cart or other similar equipment. Multiple electric heating rods are positioned above and below the rollers, inserted between the two side walls and extending horizontally through the kiln chamber. As the rollers transport the product to be fired, the electric heating rods heat it. However, in reality, the product to be fired is relatively long, and this heating method can result in uneven temperatures between the center and ends of the product. Therefore, roller hearth kilns are in urgent need of a heating device that can ensure uniform heating of the product to meet the needs of manufacturers. Utility Model Content
[0003] The utility model aims to provide an embedded electric heating device with reasonable structure, simple assembly and disassembly, convenient maintenance and uniform furnace temperature.
[0004] The technical solution of this utility model is as follows: it includes a metal frame, kiln walls, a kiln bottom, a kiln roof, rollers, electric heating rods, and electric heating components. Supplemental heating installation holes are evenly spaced on the kiln walls between the rollers and the upper and lower electric heating rods, and the electric heating components are inserted into the supplemental heating installation holes provided on the kiln walls on both sides. A transport roller assembly is inserted between the two side walls of the kiln and extends horizontally through the kiln chamber. Multiple rollers are arranged along the width of the kiln chamber, with gaps remaining between adjacent rollers. Multiple electric heating rods are arranged above and below the rollers along the width of the kiln chamber, with gaps remaining between adjacent electric heating rods. The electric heating components are inserted between the rollers and the upper and lower electric heating rods on the two side walls of the kiln.
[0005] Furthermore, the electric heating component is composed of a heating brick, a mounting flange, an end face groove, a heating resistance wire, a wire and a terminal. The heating resistance wire is installed in the groove on the end face of the heating brick and cannot leak out of the end face of the heating brick. The wire connecting the heating resistance wire passes through the preset wire holes on both sides of the heating brick and is connected to the terminal set on the mounting flange.
[0006] The beneficial effect of the present invention is that it solves the problem of uneven heating of products when heating them. Since the electric heating components are embedded on the two side walls of the kiln, they are equivalent to a supplementary heating device. When heating the product to be fired, the heating temperature of the middle part and the two ends is uniform, without temperature difference. Compared with the traditional heating method, the present invention makes the heating temperature of the product more uniform, and the supplementary heating device is easier to disassemble and install. If the supplementary heating device is damaged and needs to be replaced later, the supplementary heating resistance wire can be taken out from the side wall of the kiln together with the supplementary heating brick for replacement. It has the advantages of reasonable structure, simple operation, safe operation, energy saving and environmental protection, and can be widely used in roller kiln heating equipment.
[0007] The present invention will be further described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 This is a schematic diagram of the main structure of the utility model;
[0009] Figure 2 This is a schematic diagram of the top view of the structure of the utility model;
[0010] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model;
[0011] Figure 4 This is the front view of the electric heating component of the utility model;
[0012] Figure 5 This is a left view of the electric heating component of the utility model;
[0013] Figure 6 This is a top view of the electric heating component of the present utility model.
[0014] In the figure: 1 is a metal frame, 2 is a kiln wall, 3 is a kiln bottom, 4 is a kiln roof, 5 is a roller, 6 is an electric heating rod, 7 is a heat supplement installation hole, 8 is an electric heating component, 9 is a heat supplement brick, 10 is a mounting flange, 11 is a groove, 12 is a heat supplement resistance wire, 13 is a wire, and 14 is a terminal. DETAILED DESCRIPTION
[0015] like Figure 1 、 Figure 2 、 Figure 3As shown, the embedded electric heating device includes a metal frame 1, a kiln wall 2, a kiln bottom 3, a kiln top 4, rollers 5, electric heating rods 6 and electric heating components 8, etc. Supplementary heat installation holes 7 are evenly spaced on the kiln wall 2 between the rollers 5 and the upper and lower electric heating rods 6, and the electric heating components 8 are inserted into the supplementary heat installation holes 7 provided on the kiln walls 2 on both sides. A plurality of rollers 5 are arranged along the width direction of the kiln chamber. The rods 5 are inserted between the two side walls of the kiln and pass through the kiln chamber horizontally. A certain gap is left between adjacent rollers among the multiple rollers. According to the actual working temperature conditions, suitable materials are selected for the rollers, which have thermal stability, high temperature resistance, mechanical strength, wear resistance, corrosion resistance, and oxidation resistance to meet production needs. A certain gap is left between adjacent electric heating rods among the multiple electric heating rods, and resistance wires are wrapped on them. According to the on-site process requirements, suitable materials are selected for the electric heating rods, which have good conductivity, high temperature resistance, oxidation resistance, and corrosion resistance. As Figure 4 、 Figure 5 、 Figure 6 As shown, the electric heating assembly 8 is composed of a heating brick 9, a mounting flange 10, an end face groove 11, a heating resistor 12, a wire 13, and a terminal 14. The heating resistor 12 is installed in the groove on the end face of the heating brick 9. The end face of the heating resistor 12 cannot be higher than the end face of the heating brick. The wire 13 connecting the heating resistor 12 passes through the pre-set wire holes on both sides of the heating brick 9 and is connected to the terminal 14 set on the mounting flange. If the electric heating assembly is damaged and needs to be replaced later, the heating resistor can be pulled out from the side wall of the kiln together with the heating brick for replacement. It has the advantages of reasonable structure, simple assembly and disassembly, convenient maintenance, and uniform furnace temperature. It can be widely used in various types of roller kiln heating equipment.
Claims
1. An embedded electric heating device, comprising a metal frame (1), a kiln wall (2), a kiln bottom (3), a kiln top (4), a roller (5), an electric heating rod (6) and an electric heating assembly (8), characterized in that: Heat supplement installation holes (7) are evenly spaced apart on the kiln wall (2) between the roller rod (5) and the upper and lower electric heating rods (6), and the electric heating components (8) are inserted into the heat supplement installation holes (7) provided on the kiln walls (2) on both sides.
2. The embedded electric heating device according to claim 1, characterized in that: The electric heating assembly (8) is composed of a heating brick (9), a mounting flange (10), an end face groove (11), a heating resistance wire (12), a wire (13) and a terminal (14). The heating resistance wire (12) is installed in the groove of the end face of the heating brick (9). The wire (13) connected to the heating resistance wire (12) passes through the preset wire holes on both sides of the heating brick (9) and is connected to the terminal (14) provided on the mounting flange.