Aluminum ingot uniform heating preheating device

Abstract

The utility model provides a kind of aluminum ingot uniform heating preheating device, it is related to aluminum processing heating technical field, comprising: support frame, the upper position of support frame is equipped with one protective shell, the outer side of protective shell is equipped with an installation plate in bottom position, the upper position of installation plate is equipped with one circulating pump, the outer side of protective shell is equipped with one stable frame.The hidden installation of heater by protective shell bottom hidden groove, reduce the direct radiation of heat to outside, improve heat utilization efficiency;At the same time, the closed circulation system formed by circulating pump, drainage pipe, backflow hole and air inlet hole can reimport the waste heat at guide vane into smelting shell interior, realize hot air circulation utilization, greatly reduce heat waste.

Description

Technical Field

[0001] This utility model relates to the field of aluminum processing heating technology, and in particular to a uniform heating and preheating device for aluminum ingots. Background Technology

[0002] In the aluminum processing industry, preheating devices are currently used to melt aluminum ingots. The preheating treatment of aluminum ingots is a key step to ensure the quality of subsequent processing, and the performance of the heating device directly affects the preheating effect of the aluminum ingots. Currently, traditional aluminum ingot heating and preheating devices have many shortcomings in practical applications: Traditional heaters are mostly exposed, and heat is easily radiated and diffused directly into the external environment, resulting in a lot of energy waste. At the same time, the hot air generated during the heating process lacks an effective recycling mechanism and is often directly discharged into the air, which not only further aggravates energy loss, but also causes the temperature of the working environment to rise, affecting the comfort of operation. The hot airflow has a short and disordered flow path inside the device, which makes it difficult to make full contact with the surface of the aluminum ingot. This can easily cause local areas of the aluminum ingot to heat up too quickly, while other areas are not hot enough. Especially at the bottom of the aluminum ingot, where it is in direct contact with the support structure, heat transfer is blocked, and obvious low temperature areas often appear. This results in uneven temperature distribution of the aluminum ingot as a whole, which seriously affects the accuracy of subsequent processing and product quality. Summary of the Invention

[0003] This utility model relates to a uniform heating and preheating device for aluminum ingots. Through the coordinated operation of various components, it achieves uniform heat distribution and efficient utilization during the heating process of aluminum ingots. It also has the functions of smoke collection and impurity filtration, which not only improves the preheating quality of aluminum ingots, but also improves the working environment and reduces energy consumption.

[0004] This utility model provides a device for uniform heating and preheating of aluminum ingots, specifically including: a support frame, a protective shell installed on the upper part of the support frame, an installation plate provided on the bottom of the outer side of the protective shell, a circulating pump installed on the upper part of the installation plate, a stabilizing frame provided on the outer side of the protective shell, the stabilizing frame having a U-shaped structure, a push cylinder installed on the inner side of the stabilizing frame, a sealing cover installed on the upper part of the smelting furnace, the push rod of the push cylinder being connected to the bottom of the sealing cover, a hidden shell provided on the outer side of the protective shell, and a filter screen installed on the inner side of the hidden shell.

[0005] Furthermore, a positioning plate is installed on the upper part of the support frame. The positioning plate has an arc structure, and the bottom of the protective shell corresponds to the positioning plate. The bottom of the protective shell is installed on the inner side of the positioning plate.

[0006] Furthermore, the bottom of the protective housing has a hidden groove on the inner side, and a heater is installed on the inner side of the hidden groove.

[0007] Furthermore, the outer side of the smelting shell is provided with a set of guide plates. The guide plates are circular ring structures, and each side of the guide plate is provided with a notch. The notches are intersecting and symmetrically distributed.

[0008] Furthermore, a set of evenly distributed support plates are provided at the bottom of the smelting shell. The support plates have an arc structure, and a notch is opened on one side of each support plate. With the cooperation of the notches, the set of support plates and the guide plate are interconnected.

[0009] Furthermore, a set of vent holes is provided at the bottom of the sealing cover, and the vent holes are connected to the notch of the guide plate of the smelting shell. A return hole is provided on one side of the sealing cover, and the vent holes and the return hole are connected.

[0010] Furthermore, a drain pipe is installed at the top and bottom of the concealed shell, and an air inlet is opened at the bottom of the protective shell. The air inlet is connected to the guide plate at the bottom of the melting shell. A docking sleeve is provided on one side of the return hole and the air inlet. The upper drain pipe is connected to the docking sleeve of the return hole, and the lower drain pipe is connected to the docking sleeve of the air inlet. A circulation pump is installed between the two drain pipes. The protective shell, mounting plate, heater, melting shell, air inlet, and concealed shell cooperate with each other to form a melting furnace.

[0011] This utility model provides a device for uniform heating and preheating of aluminum ingots, which has the following beneficial effects: The concealed installation of the heater in the hidden groove at the bottom of the protective shell reduces direct heat radiation to the outside and improves heat utilization efficiency. At the same time, the closed circulation system composed of the circulating pump, the diversion pipe, the return hole, and the air inlet can reintroduce the waste heat at the guide plate into the melting shell, realize the circulation of hot air, and greatly reduce heat waste. Compared with the traditional open heating structure, energy loss is significantly reduced.

[0012] The annular guide plate on the outside of the smelting shell forms a spiral airflow channel through staggered symmetrical notches, guiding the hot airflow to flow evenly and prolonging the contact time to ensure that all areas of the shell are heated uniformly. The notch design of the bottom arc support plate is connected to the guide plate, allowing the hot airflow to cover the bottom of the aluminum ingot, avoiding local low temperature at the bottom of the aluminum ingot due to contact with the support structure, realizing synchronous heating of the entire aluminum ingot, and ensuring the preheating quality required for subsequent processing.

[0013] The annular guide plate on the outside of the smelting shell forms a spiral airflow channel through staggered symmetrical notches, guiding the hot airflow to flow evenly and prolonging the contact time to ensure that all areas of the shell are heated uniformly. The notch design of the bottom arc support plate is connected to the guide plate, allowing the hot airflow to cover the bottom of the aluminum ingot, avoiding local low temperature at the bottom of the aluminum ingot due to contact with the support structure, realizing synchronous heating of the entire aluminum ingot, and ensuring the preheating quality required for subsequent processing. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0015] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0016] In the attached diagram: Figure 1 A schematic diagram of the axial structure of the heating and preheating device of this utility model after assembly is shown; Figure 2 This utility model illustrates Figure 1 A schematic diagram of the axonal structure from the rear view; Figure 3 This diagram shows a cross-sectional view of the axial structure of the heating and preheating device of this invention. Figure 4 A schematic diagram of the axial structure of the heating and preheating device of this utility model after further cross-section is shown; Figure 5 This invention provides a schematic diagram of the axial side structure of a partially disassembled heating and preheating device. Figure 6 This utility model illustrates Figure 5 A schematic diagram of the axonal structure from an elevation viewpoint; Figure 7 A schematic diagram of the axial side structure of the smelting furnace section of this utility model is shown; Figure 8 The diagram shows an axial side view of the protective housing and sealing cover of this utility model.

[0017] List of reference numerals 1. Support frame; 2. Smelting furnace; 201. Protective shell; 202. Mounting plate; 203. Heater; 204. Smelting shell; 205. Air inlet; 206. Concealed shell; 3. Sealing cap; 301. Vent hole; 302. Return hole; 4. Circulating pump; 5. Push the cylinder; 6. Filter screen. Detailed Implementation

[0018] 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, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Example 1: Please refer to Figures 1 to 8 : This utility model proposes a uniform heating and preheating device for aluminum ingots, comprising: a support frame 1, a protective shell 201 installed on the upper part of the support frame 1, an mounting plate 202 provided on the bottom of the outer side of the protective shell 201, a positioning plate installed on the upper part of the support frame 1, the positioning plate having an arc structure, the bottom of the protective shell 201 corresponding to the positioning plate, the bottom of the protective shell 201 being installed on the inner side of the positioning plate, specifically, through the fitting installation of the arc structure positioning plate with the bottom of the protective shell 201, both a stable support can be formed for the protective shell 201, and its horizontal displacement can be restricted, ensuring the overall structural stability of the smelting furnace 2 during the heating operation, a hidden groove is provided on the inner side of the bottom of the protective shell 201, a heater 203 is installed on the inner side of the hidden groove, the heater 203 is specifically selected according to the actual needs of metal smelting using common structures and installation steps, specifically, the hidden installation method can reduce the direct radiation of heat to the outside of the protective shell 201, improve heat utilization efficiency, and reduce the temperature influence of the surrounding environment of the device; In this embodiment, a set of guide plates is provided on the outer side of the melting shell 204. The guide plates are circular ring structures, and each guide plate has a notch on one side. The notches are staggered and symmetrically distributed. With the cooperation of the notches, the set of guide plates are interconnected. Specifically, the staggered and symmetrical notch design makes the guide plates form a continuous spiral airflow channel, guiding the hot airflow to flow evenly on the outside of the melting shell 204, prolonging the contact time between the hot airflow and the shell, ensuring that the heating of each area of ​​the melting shell 204 is uniform, and thus enabling the aluminum ingot inside to heat up synchronously. A set of evenly distributed support plates is provided at the bottom of the melting shell 204. The support plates are arc structures, and each support plate has a notch on one side. With the cooperation of the notches, the set of support plates and guide plates are interconnected. Specifically, the arc structure of the support plates can stabilize the melting shell 204, and the notch design makes the support plates and guide plates form a through airflow path, allowing the hot airflow to flow from the bottom upwards, covering the bottom area of ​​the aluminum ingot, avoiding the problem of local low temperature at the bottom of the aluminum ingot due to contact with the support plates, and improving the heating uniformity. In this embodiment, a set of exhaust holes 301 are provided at the bottom of the sealing cover 3. The exhaust holes 301 are connected to the notch of the guide plate of the smelting shell 204. A return hole 302 is provided on one side of the sealing cover 3. The exhaust holes 301 and the return hole 302 are connected. When the exhaust holes 301 generate negative pressure, the hot airflow flowing through the guide plate enters the exhaust holes 301 at the edge. Then, the hot airflow enters the interior of the smelting shell 204 through the other exhaust holes 301. The smoke generated in the smelting shell 204 also enters the exhaust holes 301 and the return hole 302 under the cooperation of negative pressure. Specifically, through the connection structure of the exhaust holes 301 and the return hole 302, the hot airflow can be recycled, and the residual heat at the guide plate can be reintroduced into the interior of the smelting shell 204 to improve the heat utilization rate. At the same time, the smoke generated during smelting can be collected under the action of negative pressure to prevent the smoke from directly spreading and polluting the environment, and to prevent the smoke from adhering to the surface of the aluminum ingot and affecting the heating effect. In this embodiment, a circulating pump 4 is installed above the mounting plate 202. A stabilizing frame with a U-shaped structure is provided on the outer side of the protective shell 201. A push cylinder 5 is installed on the inner side of the stabilizing frame. A sealing cover 3 is installed above the melting furnace 2. The push rod of the push cylinder 5 is connected to the bottom of the sealing cover 3. The push rod and the sealing cover 3 are stably connected according to a conventional connection structure. A hidden shell 206 is provided on the outer side of the protective shell 201. A filter screen 6 is installed on the inner side of the hidden shell 206. A drain pipe is installed at the top and bottom of the hidden shell 206 respectively. The drain pipe is made of a high-temperature resistant stretchable material. An air inlet 205 is opened at the bottom of the protective shell 201. The air inlet 205 is connected to the guide plate at the bottom of the melting shell 204. A docking sleeve is provided on one side of the return hole 302 and the air inlet 205 respectively. The upper drain pipe and the return hole 302 are docked. The sleeve connection connects the lower drain pipe and the connecting sleeve of the air inlet 205. The circulating pump 4 is installed between the two drain pipes. With the cooperation of the drain pipes, the return hole 302, the air inlet 205 and the circulating pump 4 are connected. The protective shell 201, the mounting plate 202, the heater 203, the melting shell 204, the air inlet 205 and the concealed shell 206 work together to form the melting furnace 2. Specifically, the high-temperature resistant stretchable drain pipe and the connecting sleeve ensure that the circulating pump 4 can stably drive the hot airflow to form a closed loop between the return hole 302, the air inlet 205 and the guide plate, improving the flow of hot airflow and the uniformity of heat distribution. The concealed shell 206 protects the filter screen 6. The filter screen 6 can filter impurities in the circulating airflow and prevent impurities from entering the melting shell 204 to contaminate the aluminum ingot or block the guide channel, ensuring the long-term stable operation of the equipment. In addition, the high-temperature resistant stretchable drain pipe facilitates the opening and closing of the sealing cover 3.

[0020] Example 2, based on Example 1, such as Figures 1-8As shown, a power cord and plug are provided between the protective housing 201 and the heater 203 according to actual needs and with reference to existing technology, and a matching rotary motor is installed between the sealing cover 3 and the push rod of the push cylinder 5 according to actual needs.

[0021] The working principle of this embodiment: Place the support frame 1 on a horizontal ground, align the bottom of the protective housing 201 with the arc positioning plate above the support frame 1, and embed it into the inside of the positioning plate to complete the installation. On the mounting plate 202 on the outer side of the protective housing 201, fix the circulation pump 4 with bolts, and install the hidden housing 206 at the designated position on the outside of the protective housing 201, ensuring that the filter screen 6 inside the hidden housing 206 is installed in place. Take a high-temperature resistant stretchable drainage tube, connect one end of the upper drainage tube to the mating sleeve of the return hole 302 of the sealing cover 3, and the other end to the inlet of the circulation pump 4; connect one end of the lower drainage tube to the mating sleeve of the air inlet 205 at the bottom of the protective housing 201, and the other end to the outlet of the circulation pump 4. Check the sealing of the pipeline connection to prevent hot air leakage; as required in Embodiment 2, connect the power cord and plug between the protective housing 201 and the heater 203. If the sealing cover 3 needs to be rotated, install a matching rotary motor between the push rod of the push cylinder 5 and the sealing cover 3 to ensure normal electrical connection. When the power supply to heater 203 is turned on, the target temperature is set according to the heating requirements of aluminum ingot. Heater 203 starts to heat up, and the heat is transferred to the aluminum ingot through melting shell 204. At the same time, circulation pump 4 is started. Under the action of circulation pump 4, the hot air flow at the guide plate on the outside of melting shell 204 enters the sealing cover 3 through exhaust hole 301, and then returns to the bottom of melting shell 204 through return hole 302, guide pipe and air inlet 205, forming a closed circulation of hot air flow. During the heating process, the hot air circulation status is observed, and the airflow speed is adjusted by the circulation pump 4 to ensure that the hot airflow flows evenly in the spiral channel of the guide plate, so that all areas of the melting shell 204 are heated evenly, thereby driving the aluminum ingot to heat up synchronously. If a local temperature deviation of the aluminum ingot is found, the speed of the circulation pump 4 or the power of the heater 203 can be finely adjusted to ensure the uniformity of the aluminum ingot heating. At the same time, the negative pressure of the exhaust port 301 and the return port 302 is used to collect the smoke generated by melting and prevent the smoke from spreading. The filter screen 6 simultaneously filters impurities in the circulating airflow to prevent contamination of the aluminum ingot. Once the aluminum ingot temperature reaches the target value, reduce the power of heater 203 to maintain a stable internal temperature of the melting shell 204 and enter the heat preservation stage. During the heat preservation process, keep the circulating pump 4 running at a low speed to ensure continuous circulation of hot air and make the temperature inside and outside the aluminum ingot uniform. The heat preservation time is set according to the size of the aluminum ingot and subsequent processing requirements. During this period, the temperature and smoke collection are continuously monitored. Start the push cylinder 5, control the push rod to extend upward, drive the sealing cover 3 to rise, and use a special tool to take out the heated aluminum ingot from the melting shell 204 and place it in the designated subsequent processing station.

[0022] Clean the aluminum shavings and impurities remaining inside the melting shell 204 to avoid affecting the next heating; disassemble and clean the high-temperature resistant stretchable drain tube, clean the impurities adsorbed on the surface of the filter screen 6, and replace the filter screen 6 in time if it is damaged; control the push cylinder 5 to reset the sealing cover 3, turn off the main power supply of the equipment, tidy up the power cord and pipeline, complete the equipment reset, and wait for the next use.

Claims

1. A device for uniformly heating and preheating aluminum ingots, characterized in that, include: The support frame (1), protective housing (201) and filter screen (6) are provided. A protective housing (201) is installed on the upper part of the support frame (1). An installation plate (202) is provided on the bottom of the outer side of the protective housing (201). A circulation pump (4) is installed on the upper part of the installation plate (202). A stabilizing frame is provided on the outer side of the protective housing (201). The stabilizing frame has a U-shaped structure. A push cylinder (5) is installed on the inner side of the stabilizing frame. A sealing cover (3) is installed on the upper part of the protective housing (201). The push rod of the push cylinder (5) is connected to the bottom of the sealing cover (3). A hidden housing (206) is provided on the outer side of the protective housing (201). A filter screen (6) is installed on the inner side of the hidden housing (206).

2. The aluminum ingot uniform heating and preheating device according to claim 1, characterized in that, A positioning plate is installed above the support frame (1). The positioning plate has an arc structure. The bottom of the protective shell (201) corresponds to the positioning plate. The bottom of the protective shell (201) is installed on the inner side of the positioning plate.

3. The aluminum ingot uniform heating and preheating device according to claim 1, characterized in that, The bottom of the protective housing (201) has a hidden groove on the inner side, and a heater (203) is installed on the inner side of the hidden groove.

4. The aluminum ingot uniform heating and preheating device according to claim 1, characterized in that, The protective shell (201) has a smelting shell (204) fixedly installed inside. The outer side of the smelting shell (204) is provided with a set of guide plates. The guide plates are circular ring structures. Each side of the guide plate has a notch. The notches are intersecting and symmetrically distributed.

5. The aluminum ingot uniform heating and preheating device according to claim 4, characterized in that, The bottom of the smelting shell (204) is provided with a set of evenly distributed support plates. The support plates are arc-shaped and each side of the support plate has a notch. With the cooperation of the notches, the set of support plates and the guide plate are interconnected.

6. The aluminum ingot uniform heating and preheating device according to claim 1, characterized in that, A set of vent holes (301) is provided at the bottom of the sealing cover (3). The vent holes (301) are connected to the notch of the guide plate of the melting shell (204). A return hole (302) is provided on one side of the sealing cover (3). The vent holes (301) and the return hole (302) are connected.

7. The aluminum ingot uniform heating and preheating device according to claim 1, characterized in that, The hidden shell (206) has a drain pipe installed at the top and bottom respectively. The protective shell (201) has an air inlet (205) at the bottom. The air inlet (205) is connected to the guide plate at the bottom of the smelting shell (204). The return hole (302) and the air inlet (205) are respectively provided with a docking sleeve. The upper drain pipe is connected to the docking sleeve of the return hole (302), and the lower drain pipe is connected to the docking sleeve of the air inlet (205). The circulating pump (4) is installed between the two drain pipes. The protective shell (201), the mounting plate (202), the heater (203), the smelting shell (204), the air inlet (205), and the hidden shell (206) cooperate with each other to form the smelting furnace (2).

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