Atmosphere protection heating rod type heating furnace

Abstract

The utility model relates to an atmosphere protection heating rod type heating furnace, and belongs to the technical field of heating furnaces for metal target production, the atmosphere protection heating rod type heating furnace comprises a furnace body, a combined furnace tube and a heating rod, the furnace body is rectangular, the combined furnace tube is arranged in the middle of the furnace body, and a heating channel is formed in the combined furnace tube; the combined furnace tube comprises an upper plate, a lower plate and two side plates, mounting holes are uniformly formed in the upper plate and the lower plate side by side, the heating rods are detachably mounted in the mounting holes in a sealing manner, a plurality of vent holes which are formed side by side are communicated between the adjacent mounting holes, and the vent holes are communicated with the heating rods. And air inflation holes are formed in the positions, close to the discharge hole of the furnace body, of the upper plate and the lower plate. In the working process of the heating rods, the mounting holes and the vent holes are filled with protective gas, the heating rods are not prone to oxidative fracture and long in service life, meanwhile, each heating rod is independently mounted and can be independently replaced when damaged, the maintenance period is short, and after maintenance is completed, the furnace body can be rapidly heated and put into use.

Description

Technical Field

[0001] The present application relates to the technical field of heating furnaces for producing metal targets, and in particular to an atmosphere-protected heating rod-type heating furnace. Background Art

[0002] In the production of metal targets, target heating and heat treatment are crucial steps, making the stability and reliability of the heating furnace particularly crucial. Existing technologies typically use molybdenum wire wrapped around furnace tubes as resistance heating wires. However, these molybdenum wire-wrapped furnace tubes, lacking gas shielding, are prone to oxidation and fracture. These fractures require the furnace to be shut down and cooled, requiring the entire tube to be replaced, resulting in long maintenance cycles and high costs.

[0003] Therefore, it is urgent to develop a heating furnace with short maintenance cycle and low cost. Utility Model Content

[0004] The purpose of this application is to provide an atmosphere protection heating rod type heating furnace to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present application provides an atmosphere protection heating rod type heating furnace adopting the following technical solutions:

[0006] An atmosphere-protected heating rod type heating furnace comprises a furnace body, a combined furnace tube and a heating rod. The furnace body is rectangular in shape. The combined furnace tube is arranged in the middle of the furnace body, and a heating channel is formed inside the combined furnace tube. The combined furnace tube comprises an upper plate, a lower plate and two side plates. Mounting holes are evenly arranged side by side in the upper plate and the lower plate respectively. The heating rod is detachably sealed and mounted in the mounting hole. Several ventilation holes arranged side by side are connected between adjacent mounting holes. Inflation holes are provided at the ends of the upper plate and the lower plate near the furnace body discharge port, and air outlet holes are provided at the positions of the upper plate and the lower plate near the furnace body feed port.

[0007] The protective gas is introduced into the inflation hole, and the protective gas is hydrogen.

[0008] The heating rod is a silicon-molybdenum rod heating rod.

[0009] Preferably, there are a plurality of air outlet holes, which are arranged side by side, and an igniter is installed on the upper plate near the air outlet holes.

[0010] By adopting the above technical solution, the igniter can ignite the hydrogen discharged from the gas outlet, and multiple gas outlet holes arranged side by side can form a flame curtain, thereby preheating the metal target.

[0011] Preferably, in order to facilitate the measurement of the temperature inside the furnace, a temperature measuring couple extending into the interior of the combined furnace tube is connected to the side of the furnace body.

[0012] To sum up, the present application includes at least one of the following beneficial technical effects: the combined furnace tube in the atmosphere-protected heating rod heating furnace is composed of an upper plate, a lower plate and two side plates, and mounting holes for installing the heating rod are respectively opened in the upper plate and the lower plate, and there are also air vents between adjacent mounting holes. During the operation of the heating rod, the mounting holes and the air vents are filled with protective gas, the heating rod is not easy to oxidize and break, and has a long service life. At the same time, each heating rod is installed independently and can be replaced separately when damaged, with a short maintenance cycle. After the maintenance is completed, the furnace body can be quickly heated up and put into use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic side cross-sectional structure diagram of an embodiment of the present application.

[0014] Figure 2 It is a schematic diagram of the front cross-sectional structure of an embodiment of the present application.

[0015] Figure 3 It is a schematic diagram of a top-view cross-sectional structure of an embodiment of the present application.

[0016] Explanation of the accompanying reference numerals: 1. furnace body; 2. combined furnace tube; 21. upper plate; 22. lower plate; 23. side plate; 24. mounting hole; 25. vent hole; 26. charging hole; 27. air outlet; 3. temperature measuring couple. DETAILED DESCRIPTION

[0017] The following is combined with Figure 1-3 This application is described in further detail.

[0018] The present application discloses an atmosphere protection heating rod type heating furnace, referring to Figure 1-3 , including a furnace body 1, a combined furnace tube 2 and a heating rod (not shown in the figure). The furnace body 1 is rectangular in shape, and the furnace body 1 is filled with high-temperature resistant furnace charge. The combined furnace tube 2 is arranged in the middle of the furnace body 1, and a heating channel is formed inside the combined furnace tube 2. The combined furnace tube 2 includes an upper plate 21, a lower plate 22 and two side plates 23. Mounting holes 24 are respectively and evenly arranged side by side in the upper plate 21 and the lower plate 22. The heating rod is detachably sealed and installed in the mounting hole 24. The heating rod is a silicon-molybdenum rod heating rod. The end of the heating rod located outside the furnace body 1 is connected to a copper bus. The heating rod is connected to the external electrode in series through the copper bus. Several vents 25 arranged side by side are connected between adjacent mounting holes 24. Insulation holes 26 are provided at the ends of the upper plate 21 and the lower plate 22 near the discharge port of the furnace body 1. Gas outlet holes 27 are provided at the positions of the upper plate 21 and the lower plate 22 near the feed port of the furnace body 1. Protective gas is introduced into the gas hole 26, and the protective gas is hydrogen.

[0019] Reference Figure 1 and Figure 3There are multiple air outlet holes 27 , which are arranged side by side. An igniter (not shown in the figure) is installed near the air outlet holes 27 on the upper plate 21 .

[0020] The igniter can ignite the hydrogen discharged from the gas outlet 27, and a plurality of gas outlet holes 27 arranged side by side can form a flame curtain, thereby preheating the metal target.

[0021] Reference Figure 3 In order to facilitate the measurement of the temperature inside the furnace, a temperature measuring couple 3 is connected to the side of the furnace body 1 and extends into the interior of the combined furnace tube 2.

[0022] The implementation principle of an atmosphere protection heating rod type heating furnace in the embodiment of the present application is:

[0023] The combined furnace tube 2 is composed of an upper plate 21, a lower plate 22 and two side plates 23. The upper plate 21 and the lower plate 22 are respectively provided with mounting holes 24 for mounting the heating rods. Adjacent mounting holes 24 are also connected with vent holes 25. When the heating rods are working, the mounting holes 24 and the vent holes 25 are filled with protective gas, which makes the heating rods not easily oxidized and broken, and has a long service life.

[0024] When one or more heating rods are damaged, there is no need to stop the furnace to cool down. You only need to take out the damaged heating rod and replace it with a new one. The maintenance cycle is short. After the maintenance is completed, the furnace body 1 can be quickly heated up and put into use.

[0025] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An atmosphere protection heating rod type heating furnace, characterized in that: The invention comprises a furnace body (1), a combined furnace tube (2) and a heating rod, wherein the furnace body (1) is rectangular in shape, the combined furnace tube (2) is arranged in the middle of the furnace body (1), and a heating channel is formed inside the combined furnace tube (2), the combined furnace tube (2) comprises an upper plate (21), a lower plate (22) and two side plates (23), the upper plate (21) and the lower plate (22) are respectively and evenly provided with mounting holes (24), the heating rod is detachably sealed and installed in the mounting holes (24), a plurality of vent holes (25) arranged side by side are connected between adjacent mounting holes (24), the ends of the upper plate (21) and the lower plate (22) close to the furnace body (1) discharge port are provided with inflation holes (26), and the upper plate (21) and the lower plate (22) are close to the furnace body (1) feed port are provided with air outlet holes (27).

2. The atmosphere protection heating rod type heating furnace according to claim 1, characterized in that: The protective gas is introduced into the gas filling hole (26), and the protective gas is hydrogen.

3. The atmosphere protection heating rod type heating furnace according to claim 1, characterized in that: The heating rod is a silicon-molybdenum rod heating rod.

4. The atmosphere protection heating rod type heating furnace according to claim 1, characterized in that: There are a plurality of air outlet holes (27), which are arranged side by side. An igniter is installed on the upper plate (21) near the air outlet holes (27).

5. The atmosphere protection heating rod type heating furnace according to claim 1, characterized in that: The side of the furnace body (1) is connected to a temperature measuring electric couple (3) extending into the interior of the combined furnace tube (2).

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