An electric heating furnace for molten aluminum

Abstract

This utility model discloses an electric heating furnace for molten aluminum, belonging to the technical field of electric heating furnaces. It includes a furnace body, a heating mechanism, and a stirring mechanism. A detachable mounting cover is installed on the top of the furnace body. The heating mechanism is used to heat and maintain the temperature inside the furnace body. The stirring mechanism includes a rotary motor, a stirring shaft, and stirring rods. The rotary motor is fixedly mounted at the center of the top of the mounting cover, and its output end is connected to the stirring shaft. Several stirring rods are mounted on the stirring shaft, and a scraper is installed at one end of each stirring rod near the inner wall of the furnace body, with the scraper contacting the inner wall. This utility model ensures uniform molten aluminum temperature, preventing localized overheating or undercooling, thus avoiding a decline in molten aluminum quality due to uneven temperature and improving product qualification rate.

Description

Technical Field

[0001] This utility model relates to the field of electric heat preservation furnace technology, and in particular to an electric heat preservation furnace for molten aluminum. Background Technology

[0002] A holding furnace is an instrument designed to overcome the drawback of the material surface being suddenly exposed to the atmosphere after being ignited and burned at high temperatures. This rapid cooling of the red-hot material surface results in a significant increase in glassiness and a decrease in strength in the mineral composition of the surface sintered ore. It is an important component of low-pressure casting furnaces. Existing electric holding furnaces use localized heating, which is uneven and causes localized temperature differences within the furnace. This leads to inaccurate temperature readings from temperature sensors, affecting the quality of the molten aluminum.

[0003] Chinese patent CN213713931U discloses an electric heating furnace for molten aluminum. This utility model, by setting up a feeding pipe and a thin pipe, allows the added molten aluminum to flow directly into the lower part of the box. With the help of components such as a stirring plate and a spiral fan blade, the molten aluminum forms a circulation, and the annular heating rod circulates and heats all the molten aluminum, ensuring uniform heating and guaranteeing the quality of the molten aluminum.

[0004] However, this patent also has the following problems: the annular heating rod is in direct contact with the molten aluminum, resulting in uneven temperature. During the feeding process, the temperature of the molten aluminum near the annular heating rod is higher than that at the edge, which affects the processing quality. Utility Model Content

[0005] This invention provides an electric heating furnace for molten aluminum, which can solve the problem in the prior art where the annular heating rod is in direct contact with the molten aluminum, resulting in the temperature of the molten aluminum near the annular heating rod being higher than that at the edge, causing uneven temperature distribution.

[0006] An electric heating furnace for molten aluminum includes a furnace body, a heating mechanism, and a stirring mechanism. The furnace body has a detachable mounting cover on its top. The heating mechanism is used to heat and maintain the temperature inside the furnace body. The stirring mechanism includes a rotary motor, a stirring shaft, and stirring rods. The rotary motor is fixedly mounted at the center of the top of the mounting cover, and its output end is connected to the stirring shaft. The stirring shaft has a plurality of stirring rods, and a scraper is provided at one end of each stirring rod near the inner wall of the furnace body, and the scraper is in contact with the inner wall of the furnace body.

[0007] According to one embodiment of the present invention, the heat preservation mechanism includes a controller and a heating wire. A heating chamber is provided inside the furnace body, and the heating wire is disposed inside the heating chamber. The controller is fixedly disposed on the outside of the furnace body and is used to control the heating of the heating wire.

[0008] According to one embodiment of the present invention, a support is provided on the top of the furnace body, and a limiting block is slidably provided on the support. The limiting block is used to limit the top of the mounting cover.

[0009] According to one embodiment of the present invention, a slide rail is provided on the support, a threaded rod is provided on the slide rail, a slider is provided at the bottom of the limiting block, the slider is slidably engaged with the slide rail, a guide groove is provided on the limiting block, the guide groove is slidably engaged with the threaded rod, and a matching nut is provided on the threaded rod.

[0010] According to one embodiment of the present invention, the mounting cover is provided with a feed inlet, which is connected to the interior of the furnace body.

[0011] According to one embodiment of the present invention, a discharge pipe is provided on the outer wall of the furnace body, the discharge pipe is connected to the interior of the furnace body, and a valve is provided on the discharge pipe.

[0012] According to one embodiment of the present invention, the mounting cover is provided with a plurality of slots, and the top of the furnace body is provided with an elastic block, which is disposed in the slots.

[0013] According to one embodiment of the present invention, the top of the furnace body is provided with an installation groove, and the bottom of the installation cover is provided with an annular block, which is disposed in the installation groove.

[0014] According to one embodiment of the present invention, the outer wall of the furnace body is made of heat-insulating material.

[0015] According to one embodiment of the present invention, the inner sidewall of the furnace body is made of a heat-conducting material.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model uses a starter controller to adjust the heating power of the heating wire, heating and maintaining the interior of the furnace to keep the molten aluminum in a liquid state. Simultaneously, a rotary motor is started, driving the stirring shaft to rotate. The stirring rod on the shaft stirs the molten aluminum, ensuring a uniform temperature and preventing localized overheating or undercooling. This ensures even temperature distribution and avoids quality degradation due to uneven temperature, thus improving product yield. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a three-dimensional structure of an electric heating furnace for molten aluminum.

[0019] Figure 2 This is a cross-sectional view of an electric heating furnace for molten aluminum.

[0020] Figure 3This is a schematic diagram for installing the cover.

[0021] The attached diagram is labeled as follows: 1. Furnace body; 11. Discharge pipe; 12. Valve; 13. Mounting groove; 2. Mounting cover; 21. Feed inlet; 22. Annular block; 3. Rotary motor; 31. Stirring shaft; 32. Stirring rod; 33. Scraper; 4. Controller; 41. Heating wire; 5. Support; 51. Slide rail; 52. Threaded rod; 6. Limiting block; 61. Sliding block; 62. Guide groove; 63. Nut; 7. Elastic locking block; 71. Locking groove. Detailed Implementation

[0022] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0023] like Figures 1 to 3 As shown, an aluminum liquid electric heat preservation furnace includes a furnace body 1, a heat preservation mechanism, and a stirring mechanism. The furnace body 1 is detachably equipped with a mounting cover 2. The heat preservation mechanism is used to heat and preserve the interior of the furnace body 1. The stirring mechanism includes a rotary motor 3, a stirring shaft 31, and stirring rods 32. The rotary motor 3 is fixedly installed at the center of the top of the mounting cover 2, and its output end is connected to the stirring shaft 31. A plurality of stirring rods 32 are provided on the stirring shaft 31. A scraper 33 is provided at one end of the stirring rod 32 near the inner wall of the furnace body 1, and the scraper 33 is in contact with the inner wall of the furnace body 1.

[0024] The heat preservation mechanism includes a controller 4 and a heating wire 41. A heating chamber is provided inside the furnace body 1, and the heating wire 41 is disposed inside the heating chamber. The controller 4 is fixedly disposed on the outside of the furnace body 1 and is used to control the heating wire 41 to heat.

[0025] The controller 4 controls the on / off state and power of the heating wire 41 according to the set temperature. When the internal temperature of the furnace body 1 is lower than the set value, the controller 4 activates the heating wire 41, which generates heat in the heating chamber and transfers it to the molten aluminum through the heat-conducting material on the inner wall of the furnace body 1. When the temperature reaches the set value, the controller 4 adjusts the heating wire 41 to reduce its power or stop working, maintaining a stable internal temperature of the furnace body 1. This achieves precise control of the internal temperature of the furnace body 1, meeting the temperature requirements of different production processes for molten aluminum. Compared with traditional holding furnaces that cannot accurately control temperature, this effectively ensures the quality of molten aluminum, reduces product defects caused by temperature fluctuations, and improves production efficiency and product quality.

[0026] A support 5 is provided on the top of the furnace body 1, and a limiting block 6 is slidably provided on the support 5. The limiting block 6 is used to limit the top of the mounting cover 2.

[0027] The support 5 is provided with a slide rail 51, and a threaded rod 52 is provided on the slide rail 51. The bottom of the limiting block 6 is provided with a slider 61, which slides in cooperation with the slide rail 51. The limiting block 6 is provided with a guide groove 62, which slides in cooperation with the threaded rod 52. A matching nut 63 is provided on the threaded rod 52.

[0028] When installing the mounting cover 2, place it on top of the furnace body 1, slide the limiting block 6 to position it at a suitable position on top of the mounting cover 2, and then tighten the nut 63 on the threaded rod 52. The nut 63 and the threaded rod 52 engage to fix the limiting block 6, thus limiting the mounting cover 2 and preventing displacement during use. To disassemble, loosen the nut 63, and slide the limiting block 6 to release the restriction on the mounting cover 2, allowing for quick and easy fixing and disassembly of the mounting cover 2, improving the ease of equipment operation. The limiting block 6 enhances the stability of the mounting cover 2 after installation, ensuring it will not loosen during heat preservation and stirring, guaranteeing normal equipment operation, and also facilitating quick disassembly and maintenance of the mounting cover 2.

[0029] The mounting cover 2 is provided with a feed inlet 21, which is connected to the interior of the furnace body 1.

[0030] A discharge pipe 11 is provided on the outer wall of the furnace body 1. The discharge pipe 11 is connected to the interior of the furnace body 1, and a valve 12 is provided on the discharge pipe 11.

[0031] The feed inlet 21 is used to inject molten aluminum into the furnace body 1. During production, the molten aluminum enters the furnace body 1 quickly and smoothly through the feed inlet 21. The discharge pipe 11 is connected to the interior of the furnace body 1. When it is necessary to discharge molten aluminum for subsequent processing, the valve 12 on the discharge pipe 11 is opened, and the molten aluminum flows out from the discharge pipe 11 under the action of gravity or other external forces. The design of the feed inlet 21 and the discharge pipe 11 makes the entry and exit of molten aluminum more convenient and optimizes the production process. The control of the valve 12 can precisely regulate the outflow of molten aluminum to meet different production needs, while preventing molten aluminum from flowing out when not needed, avoiding waste and safety hazards, and improving the controllability and safety of production operations.

[0032] The mounting cover 2 is provided with a plurality of slots 71, and the top of the furnace body 1 is provided with an elastic locking block 7, which is disposed in the slots 71. The top of the furnace body 1 is provided with a mounting groove 13, and the bottom of the mounting cover 2 is provided with an annular block 22, which is disposed in the mounting groove 13.

[0033] When installing the mounting cover 2, align the annular block 22 at the bottom of the mounting cover 2 with the mounting groove 13 at the top of the furnace body 1 and lower it. At the same time, align the slot 71 on the mounting cover 2 with the elastic block 7 at the top of the furnace body 1. The elastic block 7, under its own elasticity, engages with the slot 71, achieving initial fixation between the mounting cover 2 and the furnace body 1. When disassembling, lift the mounting cover 2 upwards. The elastic block 7 will be squeezed back and disengaged from the slot 71, thus separating the mounting cover 2 from the furnace body 1. This facilitates cleaning, inspection, and maintenance of the interior of the furnace body 1. Furthermore, the cooperation between the slot 71 and the elastic block 7, and between the mounting groove 13 and the annular block 22, ensures a tight connection between the mounting cover 2 and the furnace body 1, preventing heat loss and aluminum leakage, and improving the insulation performance and safety of the equipment.

[0034] The outer wall of the furnace body 1 is made of heat-insulating material, and the inner wall of the furnace body 1 is made of heat-conducting material. The heat-insulating material on the outer wall of the furnace body 1 effectively prevents heat loss to the outside, reduces energy consumption, and lowers the temperature of the outer wall of the furnace body 1, preventing accidental burns to operators. The heat-conducting material on the inner wall of the furnace body 1 has good thermal conductivity, which can quickly transfer the heat generated by the heating wire 41 to the molten aluminum, improve heating efficiency, and enable the molten aluminum to quickly reach and maintain the required temperature.

[0035] The working principle of this utility model is as follows: During use, molten aluminum is injected into the furnace body 1 through the feed inlet 21. The controller 4 is activated, and the heating power of the heating wire 41 is adjusted to heat and maintain the temperature inside the furnace body 1, keeping the molten aluminum in a liquid state. Simultaneously, the rotary motor 3 is activated, driving the stirring shaft 31 to rotate. The stirring rod 32 on the stirring shaft 31 stirs the molten aluminum, ensuring a uniform temperature and preventing localized overheating or undercooling. The scraper 33 on the stirring rod 32, rotating with the stirring shaft 31, scrapes away adhering aluminum slag and impurities from the inner wall of the furnace body 1, preventing them from affecting the quality of the molten aluminum. When it is necessary to discharge the molten aluminum, the valve 12 on the discharge pipe 11 is opened, and the molten aluminum flows out from the discharge pipe 11. When disassembling the mounting cover 2, the nut 63 on the threaded rod 52 is unscrewed, the sliding limit block 6 releases the restriction on the mounting cover 2, and the mounting cover 2 can be easily disassembled using the cooperation of the slot 71 and the elastic block 7, and the mounting groove 13 and the annular block 22, facilitating cleaning and maintenance of the interior of the furnace body 1.

[0036] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. An aluminum liquid electric heat preservation furnace, comprising a furnace body (1), a heat preservation mechanism and a stirring mechanism, wherein a mounting cover (2) is detachably provided on the top of the furnace body (1), and the heat preservation mechanism is used to heat and preserve the interior of the furnace body (1); characterized in that The stirring mechanism includes a rotary motor (3), a stirring shaft (31), and stirring rods (32). The rotary motor (3) is fixedly installed at the top center of the mounting cover (2), and its output end is connected to the stirring shaft (31). Several stirring rods (32) are provided on the stirring shaft (31). A scraper (33) is provided at one end of the stirring rod (32) near the inner wall of the furnace body (1), and the scraper (33) is in contact with the inner wall of the furnace body (1).

2. The aluminum liquid electric heat preservation furnace as described in claim 1, characterized in that, The heat preservation mechanism includes a controller (4) and a heating wire (41). The furnace body (1) is provided with a heating chamber. The heating wire (41) is located inside the heating chamber. The controller (4) is fixedly located on the outside of the furnace body (1) and is used to control the heating of the heating wire (41).

3. The aluminum liquid electric heat preservation furnace as described in claim 1, characterized in that, The furnace body (1) is provided with a support (5) at the top, and a limit block (6) is slidably provided on the support (5). The limit block (6) is used to limit the top of the mounting cover (2).

4. The aluminum liquid electric heat preservation furnace as described in claim 3, characterized in that, The support (5) is provided with a slide rail (51), the slide rail (51) is provided with a threaded rod (52), the bottom of the limiting block (6) is provided with a slider (61), the slider (61) is slidably engaged with the slide rail (51), the limiting block (6) is provided with a guide groove (62), the guide groove (62) is slidably engaged with the threaded rod (52), and the threaded rod (52) is provided with a matching nut (63).

5. An electric heating furnace for molten aluminum as described in claim 1, characterized in that, The mounting cover (2) is provided with a feed inlet (21), which is connected to the interior of the furnace body (1).

6. The aluminum liquid electric heat preservation furnace as described in claim 1, characterized in that, A discharge pipe (11) is provided on the outer wall of the furnace body (1), the discharge pipe (11) is connected to the interior of the furnace body (1), and a valve (12) is provided on the discharge pipe (11).

7. The aluminum liquid electric heat preservation furnace as described in claim 1, characterized in that, The mounting cover (2) is provided with several slots (71), and the top of the furnace body (1) is provided with an elastic block (7), which is located in the slot (71).

8. An electric heating furnace for molten aluminum as described in claim 1, characterized in that, The furnace body (1) has an installation groove (13) at the top and an annular block (22) at the bottom of the installation cover (2), which is located in the installation groove (13).

9. An electric heating furnace for molten aluminum as described in claim 1, characterized in that, The outer wall of the furnace body (1) is made of heat-insulating material.

10. An electric heating furnace for molten aluminum as described in claim 1, characterized in that, The inner wall of the furnace body (1) is made of heat-conducting material.

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