A new type of baking-free immersion electric holding furnace for aluminum alloy

Abstract

The utility model belongs to the technical field of heat -preserving stove, disclose a kind of novel baking-free immersion type aluminum alloy electric heat preservation stove, including furnace body, furnace body includes metal shell, ceramic fiber brick is piled up to form ceramic fiber heat insulation layer in metal shell inside, the inner wall of the four around ceramic fiber heat insulation layer is all provided with nanometer partition, and the middle part of the heat insulation space surrounded by each nanometer partition is provided with graphite inner bag, and backer pouring material is filled between the inner wall of graphite inner bag in heat insulation space, the novel baking-free immersion type aluminum alloy electric heat preservation stove provided by the utility model, five-layer composite heat insulation structure, which is composed of metal shell, ceramic fiber brick, nanometer partition and the like, greatly reduces heat loss, and the surface temperature of furnace body is low;Immersion heater is matched with temperature control system, silicon-carbon rod directly heats aluminum liquid, temperature control is accurate, and the sealing structure of heating cover cooperates with folding heat insulation cotton to reduce heat loss, and heating efficiency is high.

Description

Technical Field

[0001] This utility model belongs to the field of heat preservation furnace technology, specifically relating to a novel non-baking immersion aluminum alloy electric heat preservation furnace. Background Technology

[0002] In the field of aluminum alloy casting and insulation, traditional electric insulation furnaces generally suffer from problems such as high heat loss, low heating efficiency, and insufficient insulation performance. In existing technologies, some insulation furnaces use a single insulation material or a simple layered structure, resulting in high furnace surface temperatures and significant energy waste. Simultaneously, traditional inner liner materials (such as ordinary refractory materials) require prolonged baking before use, increasing energy consumption and affecting production flexibility. Furthermore, traditional heating methods often employ indirect heating, resulting in a small contact area between the heating element and the molten aluminum, low temperature control precision, and easy fluctuations in molten aluminum temperature, leading to increased oxidation loss and affecting aluminum alloy quality. Some insulation furnaces have complex structural designs and unreasonable zoning, resulting in significant heat loss when the molten aluminum level is low, and inconvenient maintenance and replacement, making it difficult to meet the demands of high-efficiency production. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a new type of non-baking immersion aluminum alloy electric heat preservation furnace to solve the problems existing in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A novel non-baking immersion-type aluminum alloy electric heat preservation furnace includes a furnace body comprising a metal outer shell. Inside the metal outer shell, a ceramic fiber insulation layer is formed by stacking ceramic fiber boards. Nano-partitions are arranged on the inner walls of the ceramic fiber insulation layer. A graphite inner liner is located in the center of the insulation space formed by each nano-partition. A backing casting material is filled between the insulation space and the outer wall of the graphite inner liner. A metal cover is located on the top of the metal outer shell, with a central perforation exposing the graphite inner liner. An insulation baffle is located in the center of the graphite inner liner, dividing it into a molten material extraction zone and a heating zone. A heating hood is located on the top of the heating zone, and an immersion heater is fixedly installed vertically in the center of the heating hood. The immersion heater extends into the heating zone and is immersed in the molten aluminum.

[0005] In a preferred embodiment of this utility model, the graphite inner liner is configured as a feed inlet at the opening of the molten material extraction zone.

[0006] In a preferred embodiment of the present invention, the heating cover includes a cover body, which is fixedly installed on the top surface of the heating zone, and a sealing structure is provided at the bottom of the cover body to achieve a seal with the top surface of the heating zone.

[0007] In a preferred embodiment of this utility model, the sealing structure includes an L-shaped mounting groove, which is fixedly installed on the bottom of the inner wall of the cover. A sealing ring is snapped into the mounting groove, and the sealing ring is tightly attached to the top surface of the high-temperature insulation cotton. The high-temperature insulation cotton is fixedly installed on the top surface of the heating zone.

[0008] In a preferred embodiment of this utility model, the immersion heater includes a temperature controller, which is fixedly installed on the top of the cover. A silicon carbide rod is provided at the bottom of the temperature controller, and a protective tube is sleeved on the outside of the silicon carbide rod. The protective tube is fixedly installed on the bottom of the outer shell of the temperature controller.

[0009] In a preferred embodiment of this utility model, the interior of the cover and the protective tube are filled with folded thermal insulation cotton.

[0010] In a preferred embodiment of the present invention, the temperature controller includes a PLC controller, a temperature sensor, and an interactive display, wherein the interactive display is fixedly mounted on the surface of the housing of the temperature controller.

[0011] In a preferred embodiment of this utility model, the temperature sensor, the interactive display, and the silicon carbide rod are all electrically connected to the PLC controller via wires.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This utility model provides a novel, no-bake immersion-type aluminum alloy electric heat-preserving furnace. Through a five-layer composite heat insulation structure consisting of a metal shell, ceramic fiber board, and nano-partitions, it significantly reduces heat loss and maintains a low furnace surface temperature. The graphite inner liner requires no baking, shortening the production cycle, extending service life, and improving production mobility. The molten metal receiving area and heating area are designed separately, and the heat-insulating baffles prevent heat loss when the aluminum temperature is too low. Replacement is convenient, and the structure is compact with a small footprint. The immersion heater, combined with a temperature control system, allows silicon carbide rods to directly heat the molten aluminum, ensuring precise temperature control. The sealing structure of the heating hood, along with folded insulation cotton, reduces heat loss and increases heating efficiency. Compared to traditional electric heat-preserving furnaces, it results in lower aluminum molten metal loss, improved quality, and easier operation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 for Figure 2 A magnified structural diagram at point A; Figure 4 This is a top view structural flowchart of the present invention; Figure 5This is a flowchart of the control structure of this utility model.

[0014] In the diagram: 100, furnace body; 101, metal outer shell; 102, ceramic fiber board; 103, nano-partition; 104, backing casting material; 105, metal cover plate; 200, graphite inner liner; 300, immersion heater; 301, silicon carbide rod; 302, protective tube; 303, thermostat; 400, heating cover; 401, cover body; 402, folded insulation cotton; 403, sealing ring; 404, mounting groove; 405, high-temperature insulation cotton; 500, heat insulation baffle. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] Please refer to Figure 1-5 As shown, an embodiment of this application provides a novel non-baking immersion aluminum alloy electric heat preservation furnace, including a furnace body 100. The furnace body 100 includes a metal outer shell 101. The interior of the metal outer shell 101 is formed by stacking ceramic fiber boards 102 to form a ceramic fiber heat insulation layer. The inner walls of the ceramic fiber heat insulation layer are provided with nano-partitions 103. A graphite inner liner 200 is provided in the center of the heat insulation space formed by each nano-partition 103. The space between the interior of the heat insulation space and the outer wall of the graphite inner liner 200 is filled with a backing casting material 1. 04. A metal cover plate 105 is provided on the top of the metal outer shell 101. The middle of the metal cover plate 105 is hollowed out to expose the graphite inner liner 200. A heat insulation baffle 500 is provided in the center of the graphite inner liner 200. The heat insulation baffle 500 divides the graphite inner liner 200 into a molten material receiving area and a heating area. A heating cover 400 is provided on the top of the heating area. An immersion heater 300 is fixedly installed in the middle of the heating cover 400 along the vertical direction. The immersion heater 300 extends into the heating area and is immersed in the molten aluminum.

[0018] In a preferred embodiment of this utility model, the graphite inner liner 200 is further configured as a feed inlet at the opening of the molten material extraction zone.

[0019] In a preferred embodiment of the present invention, the immersion heater 300 further includes a thermostat 303, which is fixedly installed on the top of the cover 401. A silicon carbide rod 301 is provided at the bottom of the thermostat 303, and a protective tube 302 is sleeved on the outside of the silicon carbide rod 301. The protective tube 302 is fixedly installed on the bottom of the outer shell of the thermostat 303.

[0020] Specifically, the sidewall of the furnace body 100 consists of five layers from the outside to the inside: a surface metal shell 101, an outer ceramic fiber insulation layer, a middle nano-partition 103, a backing casting 104, and a graphite inner liner 200. With this arrangement, the outer surface temperature of the furnace body 100 is low and the heat loss is small. Furthermore, the use of the graphite inner liner 200 results in a short baking time, a long service life, and good mobility in daily production. This holding furnace is divided into a molten metal feeding area and a heating area by a heat insulation baffle 500. The molten metal feeding area can also be used as a feeding port. The overall structure of the holding furnace is compact and occupies little space. The heat insulation baffle 500 is mainly made of high-strength castable material. During the production process, when the aluminum content is too low, it can effectively isolate the heat loss in the heating area. The baffle is easy to replace. The heating cover 400 is arranged above the heating zone, and the immersion heater 300 is vertically inserted in the middle to directly heat the molten aluminum. The immersion heater 300 uses silicon carbide rod 301 as the heating source. The immersion heater 300 is connected to the touch screen electrical control through the input of the molten aluminum temperature and the temperature inside the heater sleeve to control the electric heating output power and accurately control the molten aluminum temperature. Compared to traditional electric heating furnaces, this method significantly improves heating efficiency, reduces aluminum molten material loss, and further enhances the quality of molten aluminum.

[0021] In a preferred embodiment of the present invention, the heating cover 400 further includes a cover body 401, which is fixedly installed on the top surface of the heating zone, and a sealing structure is provided at the bottom of the cover body 401 to achieve a seal with the top surface of the heating zone.

[0022] In a preferred embodiment of the present invention, the sealing structure further includes an L-shaped mounting groove 404, which is fixedly installed on the bottom of the inner wall of the cover 401. A sealing ring 403 is snapped into the mounting groove 404, and the sealing ring 403 is tightly attached to the top surface of the high-temperature insulation cotton 405. The nano-cover plate high-temperature insulation cotton is fixedly installed on the top surface of the heating zone.

[0023] In a preferred embodiment of the present invention, the interior of the cover 401 and the protective tube 302 are further filled with folded thermal insulation cotton 402.

[0024] Specifically, such as Figure 1-3As shown, by setting a sealing structure at the bottom of the cover 401, and through the cooperation of the high-temperature resistant sealing ring 403, the high-temperature insulation cotton 405 and the folded insulation cotton 402, the heat can be further locked inside the furnace body 100, preventing it from being lost from the top opening, and further improving the performance of this heat preservation furnace.

[0025] In a preferred embodiment of the present invention, the temperature controller 303 further includes a PLC controller, a temperature sensor and an interactive display, the interactive display being fixedly mounted on the surface of the housing of the temperature controller 303.

[0026] In a preferred embodiment of this utility model, the temperature sensor, the interactive display, and the silicon carbide rod 301 are all electrically connected to the PLC controller via wires.

[0027] Specifically, such as Figure 5 As shown, the immersion heater 300 is electrically connected to the interactive display and other devices via sensors that monitor the temperature of the molten aluminum and the temperature inside the heater sleeve, controlled by a control unit such as a PLC controller. This controls the electric heating output power and precisely controls the temperature of the molten aluminum. Compared with traditional electric heating furnaces, the heating efficiency is significantly improved, the loss of molten aluminum is low, and the quality of molten aluminum is further improved. It should be noted that the electronic control unit uses conventional existing technology, which will not be elaborated on here.

[0028] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A novel non-baking immersion-type aluminum alloy electric heat preservation furnace, comprising a furnace body (100), wherein the furnace body (100) includes a metal outer shell (101), characterized in that: The metal outer shell (101) is internally constructed by stacking ceramic fiber boards (102) to form a ceramic fiber insulation layer. Nanoscale partitions (103) are arranged on the inner walls of the ceramic fiber insulation layer. A graphite inner liner (200) is located in the center of the insulation space enclosed by each nanoscale partition (103). Backing casting material (104) is filled between the interior of the insulation space and the outer wall of the graphite inner liner (200). A metal cover plate (105) is located on the top of the metal outer shell (101). The graphite inner liner (200) is exposed through a hollowed-out section in the middle of 105. A heat insulation baffle (500) is provided in the center of the graphite inner liner (200). The heat insulation baffle (500) divides the graphite inner liner (200) into a molten material extraction area and a heating area. A heating cover (400) is provided on the top of the heating area. An immersion heater (300) is fixedly installed in the middle of the heating cover (400) along the vertical direction. The immersion heater (300) extends into the heating area and is immersed in the molten aluminum.

2. The novel non-baking immersion aluminum alloy electric heat preservation furnace according to claim 1, characterized in that: The graphite inner liner (200) is configured as a feed inlet at the opening of the molten material extraction zone.

3. The novel non-baking immersion-type aluminum alloy electric heat preservation furnace according to claim 1, characterized in that: The heating cover (400) includes a cover body (401), which is fixedly installed on the top surface of the heating zone. The bottom of the cover body (401) is provided with a sealing structure to achieve a seal with the top surface of the heating zone.

4. The novel non-baking immersion-type aluminum alloy electric heat preservation furnace according to claim 3, characterized in that: The sealing structure includes an L-shaped mounting groove (404) which is fixedly installed on the bottom of the inner wall of the cover (401). A sealing ring (403) is snapped into the mounting groove (404). The sealing ring (403) is in close contact with the top surface of the high-temperature insulation cotton (405). The high-temperature insulation cotton (405) is fixedly installed on the top surface of the heating zone.

5. The novel non-baking immersion-type aluminum alloy electric heat preservation furnace according to claim 4, characterized in that: The immersion heater (300) includes a temperature controller (303), which is fixedly installed on the top of the cover (401). A silicon carbide rod (301) is provided at the bottom of the temperature controller (303), and a protective tube (302) is sleeved on the outside of the silicon carbide rod (301). The protective tube (302) is fixedly installed on the bottom of the outer shell of the temperature controller (303).

6. The novel non-baking immersion-type aluminum alloy electric heat preservation furnace according to claim 5, characterized in that: The interior of the cover (401) and the protective tube (302) are filled with folded thermal insulation cotton (402).

7. The novel non-baking immersion-type aluminum alloy electric heat preservation furnace according to claim 6, characterized in that: The temperature controller (303) includes a PLC controller, a temperature sensor and an interactive display, the interactive display being fixedly installed on the surface of the housing of the temperature controller (303).

8. The novel non-baking immersion-type aluminum alloy electric heat preservation furnace according to claim 7, characterized in that: The temperature sensor, the interactive display, and the silicon carbide rod (301) are all electrically connected to the PLC controller via wires.

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