Industrial resistance furnace

Abstract

The application discloses an industrial resistance furnace, and relates to the technical field of metal hot processing, which comprises a base, wherein the base is provided with a furnace shell with an internal cavity; a heat insulation wall, a heating ring plate and a heat conduction wall are sequentially and radially arranged in the furnace shell in a center-outside mode; a positioning seat for placing the heating ring plate is arranged between the heat insulation wall and the heat conduction wall; an electric heating element is arranged on the inner side wall of the heating ring plate; a conductive column electrically connected with the electric heating element is arranged below the heating ring plate; a conductive slot is arranged above the positioning seat; a ring-shaped frame is arranged on the side of the heating ring plate away from the base; a plurality of supporting plates are arranged on the ring-shaped frame; a connecting buckle facilitating hoisting is arranged on each supporting plate; and an openable furnace cover is arranged on the top of the furnace shell; the heating ring plate can be conveniently taken out from the furnace shell in a hoisting and connecting buckle mode, the heating ring plate and the ring-shaped frame can be conveniently disassembled and cleaned, and the working efficiency of the resistance furnace is improved.

Description

Technical Field

[0001] This application relates to the field of metal heat treatment technology, and in particular to an industrial resistance furnace. Background Technology

[0002] An industrial 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 to process metal parts placed inside the resistance furnace.

[0003] Existing methods typically involve placing metal parts requiring tempering or annealing into a furnace lining, sealing the furnace lid, and installing a heating ring plate inside the resistance furnace. This heating ring plate is equipped with heating elements such as resistance wires to heat the metal parts. After processing, the furnace lid is opened, and the metal parts are removed using a metal arm. Regarding the aforementioned technologies, the inventors believe that the heating efficiency of the heating ring plate in a resistance furnace decreases after prolonged use, requiring cleaning and maintenance. However, common resistance furnaces fix the heating ring plate inside the furnace chamber, making disassembly and cleaning inconvenient and affecting the furnace's operating efficiency. Utility Model Content

[0004] The purpose of this application is to provide an industrial resistance furnace to improve the problem of inconvenient disassembly of the heating ring plate.

[0005] The gravity casting machine provided in this application adopts the following technical solution:

[0006] An industrial resistance furnace includes a base with a furnace shell containing a built-in cavity. Inside the furnace shell, a heat-insulating wall, a heating ring plate, and a heat-conducting wall are arranged radially from the center inwards at intervals. A positioning seat is provided between the heat-insulating wall and the heat-conducting wall on the base for engaging the heating ring plate. An electric heating element is provided on the inner wall of the heating ring plate. A conductive post electrically connected to the electric heating element is provided below the heating ring plate. A conductive slot for engaging the conductive post is provided above the positioning seat. A ring frame is provided on the side of the heating ring plate away from the base, and the ring frame has several support plates, each equipped with a connecting buckle for easy hoisting. An openable furnace cover is provided on the top of the furnace shell.

[0007] By adopting the above technical solution, an annular frame is set on the heating ring plate, and the heating ring plate is removed from the furnace shell by means of hook lock hoisting the connecting buckle on the annular frame, which facilitates the disassembly and cleaning of the heating ring plate and improves the working efficiency of the resistance furnace.

[0008] Optionally, the positioning seat is provided with positioning plates that fit against the side walls of the heating ring plate, and the top surface of the positioning plates is inclined with a guide slope to facilitate the installation of the heating ring plate.

[0009] By adopting the above technical solution, the positioning plate assists in the positioning of the heating ring plate. The guide slope set on the positioning plate makes it easier for the heating ring plate to engage with the positioning seat.

[0010] Optionally, the heating ring plate is provided with a number of fixing blocks on the side near the ring frame, the ring frame is provided with a number of fixing slots for the fixing blocks to be inserted, and the side wall of the fixing slot is provided with a fixing screw threadedly connected to the fixing block.

[0011] By adopting the above technical solution, the fixing block on the heating ring plate and the fixing groove on the ring frame are connected by heat-resistant screw threads, which facilitates the disassembly and separation of the heating ring plate and the ring frame.

[0012] Optionally, the heat insulation wall and the heat conduction wall have a support groove on the side near the annular frame for mounting the support plate.

[0013] By adopting the above technical solution, the position of the ring frame is fixed by opening a support groove for the installation of the support plate, making the heating ring plate more stable in the resistance furnace.

[0014] Optionally, the top surface of the furnace cover is provided with a ring handle.

[0015] By adopting the above technical solution, the furnace cover can be easily disassembled and installed by using a hook-lock lifting ring handle.

[0016] Optionally, the furnace shell is provided with a plurality of rotating buckles; the rotating buckles include a fixed straight plate fixedly connected to the outer side wall of the furnace shell and a rotating straight plate connected to the furnace cover, the fixed straight plate and the rotating straight plate being rotatably connected; the rotating straight plate is provided with a fixing bolt threadedly connected to the furnace cover.

[0017] By adopting the above technical solution, the method of connecting the rotating straight plate with the furnace cover by threads allows the fixing bolts to be flexibly installed and removed from the furnace cover, further facilitating the separation and assembly of the furnace shell and the furnace cover.

[0018] Optionally, a fixing plate is provided above the base and inside the heat-conducting wall.

[0019] By adopting the above technical solution, a fixed platform is set up to provide a place for the metal parts being processed, thus protecting the resistance furnace.

[0020] Optionally, the side wall of the fixed disk is provided with an annular baffle.

[0021] By adopting the above technical solution, when the metal parts are heated, the annular baffle reduces the amount of metal chips falling into the base of the resistance furnace, making it easier to clean the resistance furnace.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. A ring frame is provided on the heating ring plate. The heating ring plate can be easily removed from the furnace shell by means of a hoisting connection buckle. The fixing block on the heating ring plate and the fixing groove on the ring frame are connected by heat-resistant screw threads, which facilitates the disassembly and cleaning of the heating ring plate and the ring frame and improves the working efficiency of the resistance furnace.

[0024] 2. The furnace shell and furnace cover are connected and fixed by a rotating buckle. The rotating straight plate is connected to the furnace cover by a thread, which allows the fixing bolts to be flexibly installed and removed from the furnace cover, and facilitates the separation and assembly of the furnace shell and furnace cover; 3. The metal parts are protected by setting a fixing platform and annular baffle, which reduces the amount of metal chips falling into the base of the industrial resistance furnace and facilitates cleaning inside the industrial resistance furnace. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an industrial resistance furnace according to the present application;

[0026] Figure 2 yes Figure 1 Enlarged view of section A in the middle;

[0027] Figure 3 This is a schematic diagram of a cross-sectional view of an industrial resistance furnace according to an embodiment of this application;

[0028] Figure 4 yes Figure 3 Enlarged view of section B in the middle.

[0029] In the diagram, 1. Base; 11. Furnace shell; 12. Insulation wall; 13. Heat-conducting wall; 14. Furnace cover; 141. Ring handle; 15. Fixing plate; 151. Annular baffle; 16. Rotating buckle; 161. Fixing straight plate; 162. Rotating straight plate; 163. Fixing bolt; 2. Heating ring plate; 21. Fixing block; 22. Positioning seat; 221. Positioning plate; 222. Guide slope; 23. Heating element; 24. Conductive column; 25. Conductive slot; 3. Annular frame; 31. Fixing groove; 32. Fixing screw; 33. Support plate; 34. Connecting buckle; 4. Support groove. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 - Appendix Figure 4 This application will be described in further detail below.

[0031] An industrial resistance furnace, reference Figure 1The furnace includes a horizontal base 1, on the upper surface of which a furnace shell 11 with an internal cavity is fixedly welded. The furnace shell 11 has a vertical columnar structure, and an openable furnace cover 14 is provided on the top of the furnace shell 11. The furnace cover 14 has a vertical frustum structure. The outer wall of the furnace cover 14 is tightly fitted with the outer wall of the furnace shell 11. When the furnace shell 11 and the furnace cover 14 are fitted together, a sealed space is formed inside the electric resistance furnace. A ring handle 141 is fixedly welded to the top surface of the furnace cover 14. The ring handle 141 has a circular structure. The furnace cover 14 can be detached from the furnace shell 11 in a vertical direction by using a hook lock to lift the ring handle 141.

[0032] Reference Figure 1 and Figure 2 The outer wall where the furnace shell 11 and the furnace cover 14 meet is provided with a number of rotating buckles 16 by welding. In this embodiment, four buckles are preferred. The rotating buckles 16 include a fixed straight plate 161 that is threadedly fixed to the outer wall of the furnace shell 11 by a fixing bolt 163 and a rotating straight plate 162 that is fixedly connected to the furnace cover 14. Both the fixed straight plate 161 and the rotating straight plate 162 are elongated and are rotatably connected by a pin.

[0033] Reference Figure 3 Inside the furnace shell 11, a heat insulation wall 12, a heating ring plate 2, and a heat-conducting wall 13 are arranged radially from the outside to the inside with the center as the center. The heat-conducting wall 13 is connected to the base 1 by welding. The heat insulation wall 12 is closely attached to the inner side wall of the furnace shell 11 and connected to the base 1 by welding. The heating ring plate 2 is disposed in the gap formed by the heat insulation wall 12 and the heat-conducting wall 13. The heat insulation wall 12, the heating ring plate 2, and the heat-conducting wall 13 are all hollow cylinders. Preferably, in this embodiment, the heat insulation wall 12 is made of ceramic fiber, and the heating ring plate 2 and the heat-conducting wall 13 are made of nickel-chromium alloy.

[0034] Reference Figure 3 and Figure 4 The base 1 is located in the cavity between the heat insulation wall 12 and the heat conduction wall 13 and is fixedly installed by welding with a positioning seat 22 for the heating ring plate 2 to be engaged and placed. The positioning seat 22 is a hollow circular plate. Positioning plates 221 that are closely attached to the two side walls of the heating ring plate 2 are welded to both sides of the upper surface of the positioning seat 22. The top surface of the positioning plates 221 is inclined with a guide slope 222 to facilitate the installation of the heating ring plate 2. A ring frame 3 is provided on the side of the heating ring plate 2 away from the base 1. The ring frame 3 is a hollow circular plate. In this embodiment, the ring frame 3, the positioning seat 22, and the positioning plates 221 are made of nickel-chromium alloy.

[0035] Reference Figure 3 and Figure 4The inner sidewall of the heating ring plate 2 is provided with an electric heating element 23, which is an electric heating wire in this embodiment; a conductive post 24 is provided below the heating ring plate 2, and a conductive slot 25 for connecting the conductive post 24 is provided above the positioning seat 22 by welding; the electric heating element 23 is electrically connected to the conductive post 24; the conductive slot 25 is electrically connected to the power cord of the resistance furnace to realize the power supply and heating of the electric heating element 23.

[0036] Reference Figure 3 Several support plates 33 are fixedly installed on the top of the ring frame 3 by welding. In this embodiment, four support plates 33 are preferred. The support plates 33 are long strips. The upper surface of each support plate 33 is fixedly installed with a connecting buckle 34 by welding. The connecting buckle 34 is a vertical hollow square plate. The connecting buckle 34 is passed through the hook lock for easy disassembly of the heating ring plate 2 in the resistance furnace. Preferably, in this embodiment, the support plates 33 and the connecting buckles 34 are made of nickel-chromium alloy.

[0037] Reference Figure 3 The heat insulation wall 12 and the heat conduction wall 13 are provided with a support groove 4 for the support plate 33 to be installed on the side near the ring frame 3. The support groove 4 is long and narrow. When the support plate 33 and the support groove 4 are fitted together, the conductive post 24 and the conductive slot 25 below the heating ring plate 2 are simultaneously and accurately connected.

[0038] Reference Figure 3 A fixed plate 15 is fixedly installed on the upper surface of the base 1 and inside the heat-conducting wall 13 by welding. The fixed plate 15 is a vertical cylindrical structure. An annular baffle 151 is fixedly installed on the side wall of the fixed plate 15 by welding. The annular baffle 151 is a vertical hollow cylinder. The outer side wall of the fixed plate 15 is flush with the outer side wall of the annular baffle 151 to reduce the occurrence of metal debris falling onto the base 1 during heating, thereby preventing contamination of the resistance furnace. Preferably, in this embodiment, the fixed plate 15 and the annular baffle 151 are made of nickel-chromium alloy.

[0039] Reference Figure 3 A number of fixing blocks 21 are fixedly installed on the side of the heating ring plate 2 near the ring frame 3 by welding. The fixing blocks 21 are long strips. A number of fixing slots 31 for the fixing blocks 21 to be inserted are fixedly installed on the ring frame 3 by welding. A fixing screw 32 that is threadedly connected to the fixing block 21 is provided through the side wall of the fixing slot 31. A locking nut is fitted at the end of the fixing screw 32 after it passes through, so that the connection between the fixing block 21 and the fixing slot 31 is more stable. Preferably, in this embodiment, the fixing blocks 21, fixing slots 31 and fixing screws 32 are made of nickel-chromium alloy.

[0040] The implementation principle of this application embodiment is as follows:

[0041] The furnace cover 14 is opened by lifting the ring handle 141 with a hook lock; the heating ring plate 2 is removed from the resistance furnace by lifting the connecting buckle 34 on the ring frame 3 with a hook lock; when the heating ring plate 2 cools to room temperature, the fixing screw 32 is tightened with a torque wrench to quickly separate the heating ring plate 2 and the ring frame 3. This detachable design facilitates carbon cleaning during maintenance and improves the problem of the heating ring plate 2 being inconvenient to clean, which affects the working efficiency of the resistance furnace.

[0042] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. An industrial resistance furnace, comprising a base (1), characterized in that: The base (1) is provided with a furnace shell (11) with an internal cavity. Inside the furnace shell (11), a heat insulation wall (12), a heating ring plate (2), and a heat-conducting wall (13) are arranged radially from the outside to the inside with the center as the center. A positioning seat (22) for the heating ring plate (2) to be engaged and placed is provided between the heat insulation wall (12) and the heat-conducting wall (13) of the base (1). The inner side wall of the heating ring plate (2) is provided with an electric heating element (23). A conductive post (24) electrically connected to the heating element (23) is provided below, and a conductive slot (25) for docking the conductive post (24) is provided above the positioning seat (22); a ring frame (3) is provided on the side of the heating ring plate (2) away from the base (1), and the ring frame (3) is provided with several support plates (33), and each support plate (33) is provided with a connecting buckle (34) for easy hoisting; and an openable furnace cover (14) is provided on the top of the furnace shell (11).

2. An industrial resistance furnace according to claim 1, characterized in that: The positioning seat (22) is provided with a positioning plate (221) that fits against the side walls of the heating ring plate (2). The top surface of the positioning plate (221) is inclined with a guide slope (222) to facilitate the installation of the heating ring plate (2).

3. An industrial resistance furnace according to claim 1, characterized in that: The heating ring plate (2) is provided with several fixing blocks (21) on the side near the ring frame (3). The ring frame (3) is provided with several fixing slots (31) for the fixing blocks (21) to be inserted. The side wall of the fixing slot (31) is provided with a fixing screw (32) that is threadedly connected to the fixing block (21).

4. An industrial resistance furnace according to claim 1, characterized in that: The heat insulation wall (12) and the heat conduction wall (13) have a support groove (4) for the support plate (33) to be installed on the side of the ring frame (3).

5. An industrial resistance furnace according to claim 1, characterized in that: The top surface of the furnace cover (14) is provided with a ring handle (141).

6. An industrial resistance furnace according to claim 1, characterized in that: The furnace shell (11) is provided with a plurality of rotating buckles (16); the rotating buckles (16) include a fixed straight plate (161) fixedly connected to the outer side wall of the furnace shell (11) and a rotating straight plate (162) connected to the furnace cover (14), the fixed straight plate (161) and the rotating straight plate (162) are rotatably connected; the rotating straight plate (162) is provided with a fixing bolt (163) threadedly connected to the furnace cover (14).

7. An industrial resistance furnace according to claim 1, characterized in that: A fixing plate (15) is provided above the base (1) and inside the heat-conducting wall (13).

8. An industrial resistance furnace according to claim 7, characterized in that: The side wall of the fixed disk (15) is provided with an annular baffle (151).

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