Resistance furnace with good heat preservation effect

Abstract

The utility model relates to resistance furnace technical field provides a resistance furnace with good heat preservation effect, including resistance furnace shell, resistance furnace shell front end fixedly connected with front seal board, resistance furnace shell is fixed in the heat -insulating layer of heat preservation, the heat -insulating layer both ends side wall all install a plurality of resistance sheet, the ceramic rotation disc of rotation disc bottom -end middle part rotatory connection has, rotation disc lower fixedly connected with connecting shaft, the heat -insulating layer with resistance furnace shell between be provided with drive mechanism, drive mechanism with connecting shaft transmission connection. The utility model discloses, can pass through the rotation of rotation disc, makes the material multi -surface even heating, improves the heating evenness, avoided the product quality defect because of the uneven heating.

Description

Technical Field

[0001] This utility model relates to the field of resistance furnace technology, and in particular to a resistance furnace with good heat preservation effect. Background Technology

[0002] An electric resistance furnace is an industrial furnace that uses electric current to heat the heating elements or heating medium inside the furnace, thereby heating the workpiece or material. It is a heating furnace that uses electric current to generate heat energy by passing through a resistance material. In the machinery industry, electric resistance furnaces are used for heating metals before forging, heating metals for heat treatment, brazing, powder metallurgy sintering, glass and ceramic calcination and annealing, melting low-melting-point metals, drying sand molds and paint films, etc.

[0003] In traditional resistance furnaces, the material remains stationary during heating, and the heat source direction of the resistance heating element is relatively unidirectional. This heating mode causes the heated surface of the material in direct contact with the heat source to absorb more heat, resulting in uneven heating of the material as a whole. Long-term operation can easily lead to localized overheating, which, for green billets, can result in inconsistent sintering degrees, affecting product quality and production stability. Utility Model Content

[0004] The purpose of this invention is to address the problems in existing technologies where, during the heating process in traditional resistance furnaces, the material remains stationary, and the heat source direction of the resistance heating element is relatively unidirectional. This heating mode causes the heated surface of the material in direct contact with the heat source to absorb more heat, resulting in uneven heating of the material as a whole. Long-term operation can easily lead to localized overheating, and for green billets, this can result in inconsistent sintering degrees, affecting product quality and production stability.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a resistance furnace with good heat preservation effect, comprising a furnace shell, a front sealing plate fixedly connected to the front end of the furnace shell, a heat insulation layer fixedly disposed inside the furnace shell, multiple resistance plates installed on both side walls of the heat insulation layer, a ceramic rotating disk rotatably connected to the bottom center of the heat insulation layer, a connecting shaft fixedly connected to the lower end of the rotating disk, and a driving mechanism disposed between the heat insulation layer and the furnace shell, the driving mechanism being connected to the connecting shaft for transmission. The rotation of the rotating disk allows the material to be heated evenly from multiple sides, improving heating uniformity. Furthermore, the rotating disk is made of ceramic, which reduces heat damage caused by thermal bridging due to the rotating connection, thus improving the internal heat preservation capacity of the furnace shell.

[0006] In a preferred embodiment, the rotating disk surface is provided with uniformly distributed rectangular grooves. By setting the rectangular grooves, the contact friction is increased, making the heated material more stable.

[0007] In a preferred embodiment, the drive mechanism includes a motor mounting bracket installed at the bottom of the electric resistance furnace shell. A drive motor is installed inside the motor mounting bracket. A drive gear is fixedly connected to the output shaft of the drive motor. A driven gear is fixedly connected to the lower end of the connecting shaft. The driven gear meshes with the drive gear for transmission. Through the rotation output of the drive motor, the drive gear and the driven gear can cooperate to drive the rotation of the connecting shaft.

[0008] In a preferred embodiment, a closed door is hinged to the front end face of the front sealing plate. A connecting block for pressing is provided at the end of the closed door. The closed door functions as a closed electric resistance furnace shell. Mechanical pressing can be provided at the connecting block, such as by designing a threaded rod that is threadedly connected to the front sealing plate to press the closed door. Alternatively, a hydraulic mechanism can be connected to the connecting block to press the closed door onto the front sealing plate. The design of the connecting block is to reserve installation space for the pressing mechanism.

[0009] In a preferred embodiment, the heat insulation layer is made of alumina hollow spherical bricks, and the inner wall is lined with stainless steel foil. The alumina hollow spherical bricks have high heat resistance and low thermal conductivity, and the stainless steel foil can reflect heat radiation and reduce heat loss.

[0010] In a preferred embodiment, a control panel is installed at the lower front end of the resistance furnace shell. The control panel is electrically connected to the resistance element and the drive motor. The electrical appliances inside the device can be controlled through the control panel, making the control more convenient. A temperature sensor can also be installed inside the resistance furnace shell to monitor the temperature inside the furnace shell.

[0011] As a preferred embodiment, the inner wall of the closed box door is provided with graphite sealing strips on all four sides to improve the sealing performance of the closed box door and reduce heat loss.

[0012] In one preferred embodiment, support feet are fixedly connected to the four corners of the bottom of the electric resistance furnace shell, which serve to support the device.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] This invention allows materials to be heated evenly from multiple sides by rotating the rotating disc, improving heating uniformity and avoiding product quality defects caused by uneven heating. Furthermore, the rotating disc is made of ceramic, which has low thermal conductivity, reducing heat damage caused by thermal bridging effects due to rotational connections and improving the internal heat preservation capacity of the resistance furnace shell. Attached Figure Description

[0015] Figure 1A three-dimensional structural diagram of a resistance furnace with good heat preservation effect provided by this utility model;

[0016] Figure 2 A partial structural schematic diagram of a resistance furnace with good heat preservation effect provided by this utility model;

[0017] Figure 3 A partial cross-sectional view of a resistance furnace with good heat preservation effect provided by this utility model;

[0018] Figure 4 This utility model provides a resistance furnace with good heat preservation effect. Figure 3 Enlarged view of a portion of point A in the middle.

[0019] Legend:

[0020] 1. Electric resistance furnace shell; 2. Support feet; 3. Front sealing plate; 4. Closed door; 5. Connecting block; 6. Control panel; 7. Rotary disc; 8. Resistance element; 9. Heat insulation layer; 10. Motor mounting bracket; 11. Drive motor; 12. Driven gear; 13. Drive gear; 14. Connecting shaft. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-4 This utility model provides a technical solution: a resistance furnace with good heat preservation effect, including a furnace shell 1, a front sealing plate 3 fixedly connected to the front end of the furnace shell 1, a heat insulation layer 9 fixedly installed inside the furnace shell 1, multiple resistance plates 8 installed on both side walls of the heat insulation layer 9, a ceramic rotating disk 7 rotatably connected to the bottom center of the heat insulation layer 9, a connecting shaft 14 fixedly connected to the lower end of the rotating disk 7, and a driving mechanism provided between the heat insulation layer 9 and the furnace shell 1. The driving mechanism is connected to the connecting shaft 14 for transmission. Through the rotation of the rotating disk 7, the material can be heated evenly from multiple sides, improving the heating uniformity. Moreover, the rotating disk 7 is made of ceramic, which can reduce heat damage caused by the thermal bridge effect due to the rotation connection and improve the internal heat preservation capacity of the furnace shell 1.

[0023] like Figures 1-4 As shown, the rotating disk 7 has evenly distributed rectangular grooves on its surface. The rectangular grooves increase the contact friction, making the heated material more stable.

[0024] like Figures 1-4 As shown, the drive mechanism includes a motor mounting bracket 10 installed at the bottom of the electric resistance furnace shell 1. A drive motor 11 is installed inside the motor mounting bracket 10. The output shaft of the drive motor 11 is fixedly connected to a drive gear 13. A driven gear 12 is fixedly connected to the lower end of the connecting shaft 14. The driven gear 12 meshes with the drive gear 13 for transmission. Through the rotation output of the drive motor 11, it can cooperate with the drive gear 13 and the driven gear 12 to realize the rotation drive of the connecting shaft 14.

[0025] like Figures 1-4 As shown, a closed box door 4 is hinged to the front end face of the front sealing plate 3. A connecting block 5 for pressing is provided at the end of the closed box door 4. The closed box door 4 functions as a closed electric resistance furnace shell 1. Mechanical pressing can be provided at the connecting block 5, such as by designing a threaded rod, which is threadedly connected to the front sealing plate 3 to achieve the function of pressing the closed box door 4. Alternatively, a hydraulic mechanism can be connected at the connecting block 5 to press the closed box door 4 onto the front sealing plate 3. The design of the connecting block 5 is to reserve installation space for the installation of the pressing mechanism.

[0026] like Figures 1-4 As shown, the heat insulation layer 9 is made of alumina hollow spherical bricks, and the inner wall is lined with stainless steel foil. The alumina hollow spherical bricks have high heat resistance and low thermal conductivity, and the stainless steel foil can reflect heat radiation and reduce heat loss.

[0027] like Figures 1-4 As shown, a control panel 6 is installed at the lower front end of the electric resistance furnace shell 1. The control panel 6 is electrically connected to the resistance plate 8 and the drive motor 11. The electrical appliances inside the device can be controlled through the control panel 6, making the control more convenient. A temperature sensor can also be installed inside the electric resistance furnace shell 1 to monitor the temperature inside the electric resistance furnace shell 1.

[0028] like Figures 1-4 As shown, graphite sealing strips are provided on the four sides of the inner wall of the closed door 4 to improve the sealing performance of the closed door 4 when closed and reduce heat loss.

[0029] like Figures 1-4 As shown, support feet 2 are fixedly connected to the four corners of the bottom of the electric resistance furnace shell 1. The support feet 2 provide support for the device.

[0030] Working principle: During the heating process, the rotation output of the drive motor 11, in conjunction with the drive gear 13 and the driven gear 12, drives the rotation of the connecting shaft 14, thereby driving the rotation of the rotating disk 7. When the rotating disk 7 rotates, it drives the material to rotate synchronously, so that the material is heated evenly from multiple sides, improving the heating uniformity. In addition, the inner wall of the heat insulation layer 9 is lined with stainless steel foil, which can reflect heat radiation, reduce heat loss in the resistance furnace, and improve energy utilization. This application can make the heated material evenly heated from multiple sides by rotating the rotating disk 7, improving the heating uniformity and avoiding product quality defects caused by uneven heating.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A resistance furnace with good heat preservation effect, characterized in that, The furnace includes a resistance furnace shell (1), a front sealing plate (3) fixedly connected to the front end of the resistance furnace shell (1), a heat insulation layer (9) fixedly installed inside the resistance furnace shell (1), multiple resistance plates (8) installed on both side walls of the heat insulation layer (9), a ceramic rotating disk (7) rotatably connected to the middle of the bottom end of the heat insulation layer (9), a connecting shaft (14) fixedly connected to the lower end of the rotating disk (7), and a driving mechanism provided between the heat insulation layer (9) and the resistance furnace shell (1). The driving mechanism is connected to the connecting shaft (14) for transmission. The rotating disk (7) has evenly distributed rectangular grooves on its surface. The driving mechanism includes a motor mounting bracket (10) installed at the bottom of the electric resistance furnace shell (1). A drive motor (11) is installed inside the motor mounting bracket (10). The output shaft of the drive motor (11) is fixedly connected to a drive gear (13). The lower end of the connecting shaft (14) is fixedly connected to a driven gear (12). The driven gear (12) meshes with the drive gear (13) for transmission.

2. The electric resistance furnace with good heat preservation effect according to claim 1, characterized in that: The front end face of the front sealing plate (3) is hinged to a closed box door (4), and the end of the closed box door (4) is provided with a connecting block (5) for pressing.

3. The resistance furnace with good heat preservation effect according to claim 1, characterized in that: The heat insulation layer (9) is made of alumina hollow spherical bricks, and the inner wall is lined with stainless steel foil.

4. The resistance furnace with good heat preservation effect according to claim 1, characterized in that: A control panel (6) is installed at the lower front end of the outer shell (1) of the resistance furnace. The control panel (6) is electrically connected to the resistance plate (8) and the drive motor (11).

5. The resistance furnace with good heat preservation effect according to claim 2, characterized in that: The inner walls of the closed box door (4) are provided with graphite sealing strips on all four sides.

6. The resistance furnace with good heat preservation effect according to claim 1, characterized in that: Support feet (2) are fixedly connected to the four corners of the bottom of the electric resistance furnace shell (1).

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