Composite heat insulation layer structure of graphite digestion furnace
By employing a composite insulation layer structure in the graphite digestion furnace, utilizing a combination of aerogel felt, vacuum insulation panels, and glass fiber cotton, the problem of poor insulation performance in traditional graphite digestion furnaces has been solved, thereby improving safety and energy efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-25
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional graphite digestion furnaces have limited heat insulation properties in their outer shells, resulting in excessively high surface temperatures, posing a risk of burns and easy deformation, and also have high energy consumption.
It adopts a composite insulation layer structure, including aerogel felt, vacuum insulation board and glass fiber cotton, combined with heating components and control system to form a three-dimensional insulation system, and can be operated and controlled through touch screen.
It effectively reduces the surface temperature of the casing to below 40°C, avoiding the risk of burns, reducing heat loss, lowering energy consumption, and improving structural stability.
Smart Images
Figure CN224065918U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of graphite digestion furnace technology, and in particular to a composite heat insulation layer structure for a graphite digestion furnace. Background Technology
[0002] A graphite digestion furnace is a laboratory device used for sample pretreatment, primarily for the wet digestion of various samples. It is currently widely used in sample digestion scenarios such as the Kjeldahl method, and must meet requirements such as high-temperature uniform heating, convenient operation, and safety protection.
[0003] Traditional graphite digester furnaces typically use a single layer of asbestos or rock wool for insulation, which has limited overall insulation performance. During prolonged use, the surface temperature of the outer shell can reach over 60°C, posing a risk of burns to workers. Furthermore, prolonged exposure to high temperatures can cause the entire outer shell to deform and internal wiring to age. Utility Model Content
[0004] To solve the above problems, the present invention adopts the following technical solution: a composite heat insulation layer structure for a graphite digestion furnace, comprising: a shell, a heating component, a heat insulation component, and a control system;
[0005] The housing has a placement slot and a receiving cavity. The heating component is partially disposed in the placement slot, and the control system is disposed in the receiving cavity. The control system is used to control the heating component.
[0006] The heat insulation component is disposed in the placement slot and is located outside the heating component.
[0007] Furthermore, the heating assembly includes a heating base, a placement seat, and a heating rod. The heating base is disposed in the placement slot, the placement seat is disposed on the heating base, and the heating rod is used to heat the placement seat. The heating rod is electrically connected to the control system.
[0008] Furthermore, the placement base is a graphite block, and the graphite block has a plurality of placement holes, which are equidistantly spaced.
[0009] Furthermore, there are four heating rods, and each heating rod is partially inserted into the placement seat, while the other part is electrically connected to the control system in the accommodating cavity via a wire.
[0010] Furthermore, the heat insulation component includes an aerogel felt, an insulation board, and fiberglass wool. The aerogel felt is attached to the outside of the heating base and the placement seat. The insulation board is disposed on the other side of the aerogel felt, and the fiberglass wool is disposed on the side of the insulation board away from the aerogel felt.
[0011] Furthermore, the thickness of the aerogel felt is 15 mm.
[0012] Furthermore, the insulation board is a vacuum insulation board, and the edges of the vacuum insulation board are sealed with aluminum foil.
[0013] Furthermore, the thickness of the vacuum insulation panel is 14 mm.
[0014] Furthermore, the control system includes a controller and a display screen, the controller being disposed within the accommodating cavity, and the display screen being rotatably disposed on the outside of the housing.
[0015] Furthermore, the display screen is a touch screen.
[0016] The beneficial effects of this utility model are as follows: When this composite insulation layer structure is used in a graphite digestion furnace, the overall insulation effect is excellent, ensuring that the temperature of the outer surface of the shell does not exceed 40°C, which is lower than the safe temperature for the human body, thus avoiding the risk of burns. It can also effectively reduce heat loss and reduce energy consumption in the same working time. Through the coordinated installation of heating components, insulation components and control system, the overall structure is stable. Attached Figure Description
[0017] The accompanying drawings further illustrate the present invention, but the embodiments in the drawings do not constitute any limitation on the present invention.
[0018] Figure 1 A schematic diagram from one direction of a composite insulation layer structure for a graphite digester furnace provided in one embodiment;
[0019] Figure 2 This is a schematic diagram from another direction of a composite insulation layer structure for a graphite digester furnace provided in one embodiment. Detailed Implementation
[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings of the embodiments. This utility model is not limited to the following specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.
[0021] like Figures 1 to 2 As shown, a composite insulation layer structure for a graphite digester furnace includes: a shell 100, a heating component, an insulation component, and a control system; the shell 100 has a placement groove 101 and a receiving cavity, the heating component is partially disposed in the placement groove 101, the control system is disposed in the receiving cavity, and the control system is used to control the heating component; the insulation component is disposed in the placement groove 101, and the insulation component is located outside the heating component.
[0022] Specifically, the heating assembly includes a heating base, a placement seat 210, and a heating rod 220. The heating base is disposed within the placement groove 101, the placement seat 210 is disposed on the heating base, and the heating rod 220 is used to heat the placement seat 210, and the heating rod 220 is electrically connected to the control system. The placement seat 210 is a graphite block, and the graphite block has several placement holes 211, which are equidistantly spaced. That is, the placement holes 211 are used to place digestive tubes for experiments. Further, there are four heating rods 220, and each heating rod 220 is partially inserted into the placement seat 210, with the other part electrically connected to the control system inside the accommodating cavity via a wire.
[0023] In the above embodiments, the heat insulation assembly includes an aerogel felt 310, an insulation board 320, and fiberglass wool 330. The aerogel felt 310 is attached to the outer side of the heating base and the placement seat 210. The insulation board 320 is disposed on the other side of the aerogel felt 310, and the fiberglass wool 330 is disposed on the side of the insulation board 320 away from the aerogel felt 310. The thickness of the aerogel felt 310 is 15mm. The insulation board 320 is a vacuum insulation board 320, and the edges of the vacuum insulation board 320 are sealed with aluminum foil. The thickness of the vacuum insulation board 320 is 14mm. It is worth mentioning that the control system includes a controller and a display screen 410. The controller is disposed within the accommodating cavity, and the display screen 410 is rotatably disposed on the outer side of the housing 100. The display screen 410 is a touch screen.
[0024] In use, the housing 100 is insulated from the heating base by three layers of insulation: aerogel felt 310, insulation board 320, and fiberglass wool 330. The outermost layer of fiberglass wool 330 has a certain heat dissipation gap with the inner wall of the placement groove 101, meaning the fiberglass wool 330 does not directly contact the inner wall of the placement groove 101. This heat dissipation gap prevents direct contact with the inner wall of the housing 100, avoiding excessive temperature, and also allows air to escape within the insulation gap, effectively preventing hot air from accumulating. In other words, the three layers of insulation—aerogel felt 310 first blocks high-temperature radiation, then the vacuum insulation board 320 blocks conductive heat, and then the fiberglass wool 330 absorbs convective heat—form a three-dimensional insulation system. The insulation gap ensures airflow, reducing heat accumulation within the placement groove 101 and providing excellent heat insulation and dissipation.
[0025] It is worth mentioning that the entire graphite digestion furnace can be operated directly by using a touch screen. That is, the touch screen is connected to the controller, and the controller controls the furnace. For example, the controller controls the heating rod 220 to heat the furnace. In other words, by programming and inputting the data into the controller, the controller can control the entire graphite digestion furnace. This will not be described in detail in this embodiment.
[0026] In summary, the above embodiments are not limiting embodiments of this utility model. Any modifications or equivalent variations made by those skilled in the art based on the substantive content of this utility model are within the technical scope of this utility model.
Claims
1. A composite heat insulation layer structure of a graphite digestion furnace, characterized by comprising: The application relates to a heating device. The heating device comprises a shell, a heating assembly, a heat insulation assembly and a control system. The shell is provided with a placing groove and a containing cavity, the heating assembly is partially arranged in the placing groove, and the control system is arranged in the containing cavity and used for controlling the heating assembly. The heat insulation assembly is arranged in the placing groove and located outside the heating assembly.
2. The composite insulation layer structure of a graphite digestion furnace according to claim 1, characterized by: The heating assembly comprises a heating base, a placing seat and heating rods.
3. The composite insulation layer structure of a graphite digestion furnace according to claim 2, characterized by: The placing seat is a graphite block, and a plurality of placing holes are equidistantly arranged on the graphite block.
4. The composite insulation layer structure of a graphite digestion furnace according to claim 3, characterized by: The number of the heating rods is four, each heating rod is partially inserted into the placing seat, and the other part of the heating rod is electrically connected with the control system in the containing cavity through a wire.
5. The composite insulation structure of a graphite digestion furnace according to claim 4, characterized in that: The heat insulation assembly comprises aerogel felt, a heat insulation plate and glass fiber cotton.
6. The composite insulation layer structure of a graphite digestion furnace according to claim 5, characterized by: The thickness of the aerogel felt is 15 mm.
7. The composite insulation layer structure of a graphite digestion furnace according to claim 6, characterized by: The heat insulation plate is a vacuum heat insulation plate, and the edge of the vacuum heat insulation plate is sealed by an aluminum foil.
8. The composite insulation layer structure of a graphite digestion furnace according to claim 7, characterized by: The thickness of the vacuum heat insulation plate is 14 mm.
9. The composite insulation layer structure of a graphite digestion furnace according to claim 8, characterized by: The control system comprises a controller and a display screen.
10. The composite insulation structure of a graphite digestion furnace according to claim 9, characterized by: The display screen is a touch screen.