Device for removing residual wax through high-temperature roasting

Abstract

The utility model discloses a high-temperature roasting residual wax removing device which comprises a roasting box body, a speed-adjustable rotary workbench is arranged in the roasting box body, the inner wall of the roasting box body is fixedly connected with a resistance heating module, the right wall of the roasting box body is fixedly connected with a microwave heating module, and the microwave heating module is connected with a microwave heating module. An infrared heating module is fixedly connected to the left wall of the roasting box body, a box cover is rotatably connected to the outer wall of the roasting box body, and a waste gas exhaust pipe is fixedly connected to the top of the roasting box body. According to the utility model, the speed-adjustable rotary workbench drives the blank to rotate, and a plurality of heating modules are adopted to cooperatively work, so that the heating efficiency can be improved, and residual wax on the blank can be quickly and uniformly heated in a high-temperature roasting process, thereby more sufficiently removing the residual wax; the multiple layers of composite high-temperature-resistant sealing strips and the gradient heat preservation layer arranged outside the roasting box body are arranged, so that the sealing performance and the heat preservation performance of the device are effectively enhanced, heat loss is reduced, and energy consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the field of precision casting technology, and in particular to a device for removing residual wax by high-temperature baking. Background Technology

[0002] In the field of precision casting, high-temperature roasting is currently the mainstream process for removing residual wax from the surface of metal parts, molds, or anti-permeability molds in industry. Its core is to melt or burn the wax by heating.

[0003] In the stainless steel mold manufacturing process, the dewaxed mold blank needs to be baked at high temperature to remove the residual wax, otherwise it will affect the quality of the stainless steel in the subsequent manufacturing process.

[0004] Existing high-temperature roasting devices for removing residual wax have the following problems: First, the preform is placed in a fixed position during heating, and the temperature inside the device is uneven, which makes the different parts of the preform heated unevenly, and the residual wax cannot be fully removed; Second, the device has poor sealing performance, resulting in serious heat loss, which not only wastes energy, but also affects the roasting effect due to the entry of cold air from the outside, leading to a longer roasting time. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a high-temperature roasting device for removing residual wax, which aims to improve the problem of uneven heating of the blank, while improving the sealing of the device, reducing heat loss and avoiding energy waste.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-temperature roasting device for removing residual wax, comprising a roasting chamber, wherein an adjustable speed rotating worktable is provided inside the roasting chamber, a resistance heating module is fixedly connected to the inner wall of the roasting chamber, a microwave heating module is fixedly connected to the right wall of the roasting chamber, an infrared heating module is fixedly connected to the left wall of the roasting chamber, a chamber cover is rotatably connected to the outer wall of the roasting chamber, and a waste gas discharge pipe is fixedly connected to the top of the roasting chamber.

[0007] As a further description of the above technical solution:

[0008] A smart control panel is provided on one side of the box lid, and a handle is fixedly connected to one side of the box lid.

[0009] As a further description of the above technical solution:

[0010] The box cover is equipped with multi-layer composite high-temperature resistant sealing strips around its perimeter. These multi-layer composite high-temperature resistant sealing strips are made of a woven structure of ceramic fiber and metal wire.

[0011] As a further description of the above technical solution:

[0012] The exterior of the calcining chamber is provided with a gradient insulation layer, which consists of a nano-insulation coating, a ceramic fiber felt, and an aerogel insulation board from the inside out.

[0013] As a further description of the above technical solution:

[0014] The bottom end of the adjustable speed rotary table is fixedly connected to the output end of the drive motor.

[0015] As a further description of the above technical solution:

[0016] Multiple infrared temperature sensors are evenly distributed on the inner wall of the roasting chamber and are connected to the intelligent control panel via anti-interference signal lines.

[0017] As a further description of the above technical solution:

[0018] The resistance heating module, microwave heating module, and infrared heating module are all electrically connected to the intelligent control panel.

[0019] As a further description of the above technical solution:

[0020] The exhaust pipe is connected to an external exhaust gas treatment device.

[0021] As a further description of the above technical solution:

[0022] The microwave heating module is externally equipped with an aluminum alloy metal shield, and the inner layer of the aluminum alloy metal shield is coated with a ferrite coating microwave absorbing material.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, during the roasting process, the adjustable speed rotating worktable drives the embryo to rotate, so that the embryo can be heated evenly in all directions, avoiding the situation of insufficient heating in some areas of the embryo, and further improving the removal effect of residual wax. In addition, the use of multiple heating modules working together can improve heating efficiency and ensure that the residual wax on the embryo is heated quickly and evenly during the high-temperature roasting process, thereby removing the residual wax more thoroughly.

[0025] 2. In this utility model, a multi-layer composite high-temperature resistant sealing strip and a gradient insulation layer set on the outside of the roasting chamber are used to effectively enhance the sealing and insulation performance of the device, reduce heat loss, reduce energy consumption, and prevent cold air from entering and affecting the roasting effect. An exhaust pipe is set up so that the exhaust gas generated by the decomposition of residual wax during the high-temperature roasting process can be discharged in time through the exhaust pipe and professionally treated to avoid harmful exhaust gas being directly emitted into the atmosphere and reduce environmental pollution. Attached Figure Description

[0026] Figure 1This is a perspective view of a high-temperature calcination device for removing residual wax according to the present invention.

[0027] Figure 2 This is a schematic diagram of the structure of a high-temperature roasting device for removing residual wax according to the present invention;

[0028] Figure 3 This is a schematic diagram showing the distribution of infrared temperature sensors in a high-temperature calcination device for removing residual wax according to this utility model.

[0029] Figure 4 This is a schematic diagram of the microwave heating module of a high-temperature roasting device for removing residual wax, as proposed in this utility model.

[0030] Legend:

[0031] 1. Calcination chamber; 2. Adjustable speed rotary table; 3. Resistance heating module; 4. Chamber lid; 5. Intelligent control panel; 6. Handle; 7. Exhaust gas exhaust pipe; 8. Microwave heating module; 9. Multi-layer composite high-temperature resistant sealing strip; 10. Infrared heating module; 11. Aluminum alloy metal shielding cover; 12. Infrared temperature sensor. Detailed Implementation

[0032] 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.

[0033] Example 1: Refer to Figure 1 and Figure 2A high-temperature roasting device for removing residual wax includes a roasting chamber 1. An adjustable-speed rotating worktable 2 is installed inside the roasting chamber 1. A resistance heating module 3 is fixedly connected to the inner wall of the roasting chamber 1. A microwave heating module 8 is fixedly connected to the right wall of the roasting chamber 1. An infrared heating module 10 is fixedly connected to the left wall of the roasting chamber 1. A chamber cover 4 is rotatably connected to the outer wall of the roasting chamber 1. A waste gas exhaust pipe 7 is fixedly connected to the top of the roasting chamber 1. During the roasting process, the adjustable-speed rotating worktable drives the blank to rotate, ensuring that the blank is heated evenly from all directions, avoiding uneven heating in certain areas, and further improving the removal effect of residual wax. Infrared temperature sensors 12 distributed on the inner wall of the roasting chamber 1 collect the temperature data inside the chamber in real time and transmit the data to an intelligent control panel 5. The intelligent control panel 5 compares the actual temperature data with the preset temperature and adjusts the power of the three heating modules in real time using PID control algorithms and other adjustment methods to ensure that the temperature inside the chamber is always maintained within the preset ideal range, allowing the residual wax to fully decompose under suitable temperature conditions, thereby more thoroughly removing the residual wax.

[0034] Example 2: Refer to Figure 2 A smart control panel 5 is installed on one side of the lid 4, and a handle 6 is fixedly connected to one side of the lid 4. Multi-layer composite high-temperature resistant sealing strips 9 are installed around the lid 4. The multi-layer composite high-temperature resistant sealing strips 9 adopt a ceramic fiber and metal wire woven layer structure. A gradient insulation layer is installed on the outside of the calcining chamber 1. The gradient insulation layer consists of a nano-insulation coating, ceramic fiber felt, and aerogel insulation board from the inside out. The bottom end of the adjustable-speed rotating worktable 2 is fixedly connected to the output end of the drive motor. The exhaust pipe 7 is connected to an external exhaust gas treatment device. Multi-layer composite high-temperature resistant sealing strips 9 are used. The gradient insulation layer set on the outside of the roasting chamber 1 effectively enhances the sealing and insulation performance of the device, reduces heat loss, lowers energy consumption, and also prevents cold air from entering and affecting the roasting effect. During the high-temperature roasting process, the waste gas generated by the decomposition of residual wax is transported to the external waste gas treatment device through the waste gas discharge pipe 7. The external waste gas treatment device performs a series of treatments on the waste gas, such as condensation, filtration, adsorption, and catalytic oxidation, to convert the harmful components in the waste gas into harmless substances, and finally achieve the emission standard, avoiding the direct emission of harmful waste gas into the atmosphere and reducing environmental pollution.

[0035] Example 3: Reference Figure 3 and Figure 4 To prevent mutual interference between the heating modules within the device, an aluminum alloy metal shield 11 is installed outside the microwave heating module 8. The inner layer of the aluminum alloy metal shield 11 is coated with a ferrite-coated microwave-absorbing material. The aluminum alloy metal shield 11 and the metal frame of the calcining chamber 1 are connected to independent grounding posts, forming a complete electromagnetic shielding network. This effectively suppresses microwave leakage (reducing electromagnetic radiation intensity to <1mW / cm²). 2To avoid interference with the infrared temperature sensor 12 and control circuit, multiple infrared temperature sensors 12 are evenly distributed on the inner wall of the roasting chamber 1 and electrically connected to the intelligent control panel 5. The infrared temperature sensor 12 is a sapphire window type and is equipped with a quartz heat insulation sleeve. The signal line of the infrared temperature sensor 12 is a shielded twisted pair cable and is connected to an opto-isolation module to prevent microwave high-frequency signal crosstalk. The resistance heating module 3 uses ceramic-coated resistance wire. A double-layer heat insulation board (ceramic fiber and aerogel, with a total thickness of 30mm) is set between the intelligent control panel 5 and the roasting chamber 1 to ensure that the panel surface temperature is <60℃. At the same time, the resistance heating module 3 is equipped with a fuse and a solid-state relay to cut off the power supply within 0.1 seconds when the current exceeds the limit. The microwave module 8 integrates a magnetron over-temperature protection switch (operating temperature 85℃) to prevent damage to the device due to standing wave reflection.

[0036] Working Principle: When using this device, the operator opens the lid 4 using handle 6, places the preform to be processed on the adjustable-speed rotary table 2, and then closes the lid 4. The multi-layer composite high-temperature resistant sealing strip 9 ensures the airtightness of the roasting chamber 1. Then, the operator presets parameters such as roasting temperature and heating time via the intelligent control panel 5. After receiving the preset parameters, the intelligent control panel 5 sends start commands to the resistance heating module 3, microwave heating module 8, and infrared heating module 10. The resistance heating module 3 starts working first, providing basic heating for the interior of the roasting chamber 1, while the microwave heating module 8 generates a thermal effect inside the preform. To achieve heating from the inside out, the infrared heating module 10 rapidly heats the surface of the blank. During this process, the drive motor rotates the worktable 2, ensuring that the blank is heated evenly in all directions. Simultaneously, the infrared temperature sensors 12 distributed on the inner wall of the roasting chamber 1 collect the temperature data inside the chamber in real time and transmit the data to the intelligent control panel 5. The intelligent control panel 5 compares the actual temperature data with the preset temperature and adjusts the power of the three heating modules in real time through adjustment methods such as PID control algorithm, ensuring that the temperature inside the chamber is always maintained within the preset ideal range, allowing the residual wax to fully decompose under suitable temperature conditions.

[0037] Once the preset roasting time is reached, the intelligent control panel 5 stops the operation of the resistance heating module 3, microwave heating module 8, and infrared heating module 10. The drive motor also stops rotating the worktable 2. After the temperature inside the roasting chamber 1 drops to a safe range, the operator opens the chamber cover 4 through the handle 6, takes out the processed blank, and completes the entire high-temperature roasting process to remove residual wax.

[0038] During the high-temperature roasting process, the waste gas generated by the decomposition of residual wax is transported to the external waste gas treatment device through the waste gas discharge pipe 7. The external waste gas treatment device performs a series of treatments on the waste gas, such as condensation, filtration, adsorption, and catalytic oxidation, to convert the harmful components in the waste gas into harmless substances, and finally achieve the emission standard, thereby achieving the purpose of environmental protection.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-temperature roasting device for removing residual wax, comprising a roasting chamber (1), characterized in that: The roasting chamber (1) is equipped with a speed-controlled and adjustable rotating worktable (2). A resistance heating module (3) is fixedly connected to the inner wall of the roasting chamber (1). A microwave heating module (8) is fixedly connected to the right wall of the roasting chamber (1). An infrared heating module (10) is fixedly connected to the left wall of the roasting chamber (1). A box cover (4) is rotatably connected to the outer wall of the roasting chamber (1). A waste gas exhaust pipe (7) is fixedly connected to the top of the roasting chamber (1).

2. The high-temperature roasting device for removing residual wax according to claim 1, characterized in that: A smart control panel (5) is provided on one side of the box cover (4), and a handle (6) is fixedly connected to one side of the box cover (4).

3. The high-temperature roasting device for removing residual wax according to claim 1, characterized in that: The box cover (4) is equipped with a multi-layer composite high-temperature resistant sealing strip (9) around its perimeter. The multi-layer composite high-temperature resistant sealing strip (9) adopts a ceramic fiber and metal wire woven layer structure.

4. The high-temperature roasting device for removing residual wax according to claim 1, characterized in that: The exterior of the calcining chamber (1) is provided with a gradient insulation layer, which consists of a nano-insulation coating, a ceramic fiber felt, and an aerogel insulation board from the inside to the outside.

5. The high-temperature roasting device for removing residual wax according to claim 1, characterized in that: The bottom end of the adjustable speed rotary table (2) is fixedly connected to the output end of the drive motor.

6. The high-temperature roasting device for removing residual wax according to claim 1, characterized in that: Multiple infrared temperature sensors (12) are evenly distributed on the inner wall of the roasting chamber (1) and are connected to the intelligent control panel (5) through anti-interference signal lines.

7. The high-temperature roasting device for removing residual wax according to claim 1, characterized in that: The resistance heating module (3), microwave heating module (8) and infrared heating module (10) are all electrically connected to the intelligent control panel (5).

8. The high-temperature roasting device for removing residual wax according to claim 1, characterized in that: The exhaust pipe (7) is connected to an external exhaust gas treatment device.

9. The high-temperature roasting device for removing residual wax according to claim 1, characterized in that: The microwave heating module (8) is provided with an aluminum alloy metal shield (11) on the outside, and the inner layer of the aluminum alloy metal shield (11) is coated with ferrite coating microwave absorbing material.

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