Energy-saving aluminum bar heating system

Abstract

The application discloses an energy-saving aluminum bar heating system and relates to the technical field of aluminum profile production. The energy-saving aluminum bar heating system comprises a gas furnace, a power frequency furnace and a heat preservation chamber arranged between the two. An inclined slide is arranged in the heat preservation chamber, a rotating wheel and a polishing assembly are arranged on the slide, and a driving mechanism is further arranged on the slide. After being preheated by the gas furnace, the aluminum bar slides along the inclined slide, the driving mechanism converts the gravitational potential energy of the aluminum bar into mechanical energy of the rotating wheel, and the polishing assembly is driven to automatically remove the oxide skin on the surface of the aluminum bar. Meanwhile, the waste heat of the gas furnace is recovered by a waste heat recovery mechanism to heat preserve the aluminum bar. The application automatically polishes the oxide skin by using the weight of the aluminum bar, and no additional power is needed, thereby effectively solving the problems of the oxide skin hindering power frequency induction heating, high energy consumption and coarse aluminum bar grains in the prior art, improving the heating efficiency, reducing the production energy consumption, guaranteeing the quality of aluminum profile products and being applicable to continuous extrusion production of aluminum profiles.

Description

Technical Field

[0001] This invention belongs to the field of aluminum profile processing technology, specifically relating to an energy-saving aluminum rod heating system. Background Technology

[0002] In the aluminum profile manufacturing industry, extrusion molding is one of the key processes. To ensure the smooth progress of the extrusion process and the mechanical properties of the profiles, the aluminum bars must be fully heated before entering the extruder. In existing technologies, to balance heating efficiency and energy consumption, a combined heating mode of "gas furnace preheating + industrial frequency induction furnace heating" is usually adopted.

[0003] Specifically, the aluminum rod is first preheated using a gas-fired furnace, and then transferred to an industrial frequency induction furnace for final heating (heating and holding). While this segmented heating method utilizes the cost advantage of gas heating to some extent, it still has significant drawbacks in practical applications: When aluminum rods are heated in the high-temperature environment of a gas furnace, their surface readily reacts with oxygen to form an alumina (Al2O3) oxide scale. Because the physical properties of this scale differ from those of the aluminum matrix—aluminum is an excellent conductor, while alumina (Al2O3) is an insulator with high resistivity—the subsequent induction heating process requires the generation of eddy currents within the aluminum rod to achieve heating. However, the oxide scale covering the surface is not only non-conductive but also forms a "magnetic shielding layer." This makes it difficult for the electromagnetic induction current to effectively penetrate into the aluminum rod, weakening the efficiency of induction heating. Consequently, manufacturers are forced to extend the heating time or increase equipment power, resulting in additional energy waste.

[0004] Therefore, there is an urgent need for an energy-saving aluminum rod heating system that can avoid high energy consumption and wasted electricity due to the presence of oxide scale. Summary of the Invention

[0005] The purpose of this invention is to provide an energy-saving aluminum rod heating system that does not have at least one of the disadvantages mentioned above.

[0006] To achieve the above objectives, the present invention discloses an energy-saving aluminum rod heating system, comprising: Gas-fired furnace, used for preheating billets; An industrial frequency furnace is used to heat preheated billets; An insulated chamber is located between the gas furnace and the industrial frequency furnace; The heat preservation chamber is equipped with a slide, one end of which is connected to the outlet of the gas furnace and the other end is connected to the inlet of the industrial frequency furnace. A rotating wheel is rotatably connected to the slide, and a grinding component is provided inside the rotating wheel for grinding the surface of the blank in the slide. The slide rail is inclined downward from the gas furnace to the industrial frequency furnace; a drive mechanism is provided on the slide rail, which is connected to the rotating wheel and the billet located inside the slide rail, so that when the billet slides inside the slide rail, the drive mechanism converts the gravitational potential energy of the billet into the rotational mechanical energy of the rotating wheel.

[0007] As an optional implementation, the gas furnace is equipped with a waste heat recovery mechanism, the upper part of the heat insulation chamber is provided with a number of hot air nozzles pointing towards the slide, and the lower part of the heat insulation chamber is provided with a number of air outlets. The hot air nozzle is connected to the air outlet pipe of the waste heat recovery mechanism.

[0008] As an optional implementation, the gas outlet pipe between the hot gas nozzle and the gas furnace is coiled around the inner wall of the gas furnace to achieve heat exchange between the gas outlet pipe and the interior of the gas furnace.

[0009] As an optional implementation, a support frame is fixedly connected to the bottom of the slide rail. The slide rail includes a sliding cavity, on which the blank slides. The driving mechanism includes a sliding rod slidably connected to the slide rail, an abutment rod connected to the sliding rod and located in the sliding cavity, a wire rope connected to one end of the sliding rod away from the abutment rod, a pulley assembly provided on the slide rail and / or the support frame, and a drive wheel rotatably connected to the support frame. One end of the abutment rod abuts against one end of the blank located inside the sliding cavity. The drive wheel and the rotating wheel are provided with mutually meshing external gear rings. One end of the drive wheel is fixedly connected to a drum for winding the wire rope. The wire rope in the drum is connected to the sliding rod through the traction of the pulley assembly, so that when the sliding rod slides, the wire rope drives the drum to rotate, causing the drive wheel and the rotating wheel to rotate.

[0010] As an optional implementation, a spring box is fixedly connected to the end of the drive wheel away from the drum. A spring is installed inside the spring box. The outer end of the spring is fixedly connected to the spring box, and the inner end of the spring is fixedly connected to the support frame to realize the resetting of the drum.

[0011] As an optional implementation, the slide rail has a groove inside, the sliding rod is slidably connected to the groove, and the sliding rod is square. The groove has an outlet at one end near the wire rope. The pulley assembly includes a first pulley rotatably connected to the outlet, a support rod fixed to the support frame, and a second pulley rotatably connected to the support rod. The rotation axes of the first pulley and the second pulley are perpendicular to each other, and the second pulley is parallel to the rotation axis of the drum. After the wire rope comes out of the drum, it is wound sequentially on the second pulley and the first pulley, and the output direction of the wire rope in the first pulley is consistent with the sliding direction of the sliding rod.

[0012] As an optional implementation, one end of the abutment rod used to abut against the billet is provided with an abutment plate. In the initial state before abutting against the billet, the abutment plate is located on the side of the grinding assembly away from the industrial frequency furnace, so that the rotating wheel rotates before the billet comes into contact with the grinding assembly.

[0013] As an optional implementation, the lower end of the sliding cavity is provided with a baffle, and the distance between the baffle and the rotating wheel is greater than the length of the blank.

[0014] As an optional implementation, a transfer assembly is provided between the slide and the industrial frequency furnace, and the slide between the baffle and the rotating wheel is provided with several grooves to facilitate the transfer assembly to transfer the billet located on the slide to the industrial frequency furnace.

[0015] As an optional implementation, the slide rail is provided with a boss, which is located on the side of the baffle away from the sliding cavity. The sliding rod is slidably connected to the boss to increase the sliding distance of the sliding rod. A stop rod is fixedly connected between the sliding rod and the abutting rod. In the initial state, the stop rod abuts against the boss.

[0016] As an optional implementation, a transfer frame is hinged to one end of the slide rail connected to the outlet of the gas furnace. A telescopic member is provided on the support frame. One end of the telescopic member is hinged to the support frame, and the other end is hinged to the bottom of the transfer frame. The extension and retraction of the telescopic member can align the transfer frame with the outlet of the gas furnace or align the transfer frame with the sliding cavity.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention sets up a grinding mechanism after the gas furnace preheats and before the industrial frequency furnace heats up, so as to remove the aluminum oxide scale on the surface of the aluminum rod in advance, eliminate the "magnetic shielding layer", ensure that the industrial frequency induced current effectively penetrates into the interior of the aluminum rod, improve the efficiency of induction heating, and avoid the waste of electrical energy caused by extending the heating time and increasing the power of the equipment; at the same time, by using the inclined structure of the slide, the gravitational potential energy of the sliding aluminum rod is converted into the rotational mechanical energy of the rotating wheel, which drives the grinding component to work. At this time, the grinding component does not need an external motor or other power source, further reducing energy consumption and achieving energy saving requirements. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal slide and support frame of the insulation chamber; Figure 3 for Figure 2 A partial sectional view of the structure; Figure 4 for Figure 3 A magnified view of a portion of the image.

[0020] Explanation of key figure labels: 1. Gas furnace; 2. Insulated chamber; 201. Support frame; 202. Pulley assembly; 2021. Steel wire rope; 2022. First pulley; 2023. Support rod; 2024. Second pulley; 2025. Drum; 203. Drive wheel; 204. Spring box; 205. Sliding rod; 206. Stop bar; 207. Abutment rod; 2071. Abutment plate; 3. Industrial frequency furnace; 4. Telescopic components; 5. Transfer frame; 6. Billet; 7. Rotating wheel; 701. External gear ring; 8. Slide; 801. Groove; 802. Outlet; 803. Boss; 804. Baffle. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated device, element, or component to include a specific orientation, or to be constructed and operated in a specific orientation.

[0023] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0024] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0025] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0026] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0027] Please see Figures 1-4As shown in the figure, this application embodiment provides an energy-saving aluminum rod heating system, including a gas furnace 1 and an industrial frequency furnace 3. The gas furnace 1 adopts a conventional gas heating structure, which can flexibly adjust the preheating temperature according to the specifications, material and subsequent extrusion process requirements of the aluminum rod, to ensure that the billet 6 can be initially heated to the preset preheating range, which not only lays the foundation for the final heating of the industrial frequency furnace 3, but also makes full use of the advantage of low gas heating cost, reducing the energy consumption of the early preheating stage. Its discharge port is connected to the feeding end of the subsequent insulation chamber 2 to ensure that the aluminum rod can be transported smoothly after preheating. The industrial frequency furnace 3 is used for the final heating and heat preservation treatment of the preheated billet 6. It adopts a mature industrial frequency induction heating structure and relies on the electromagnetic induction principle to generate eddy currents inside the aluminum rod, thereby achieving uniform heating. It can control the temperature of the aluminum rod to the standard temperature required for aluminum profile extrusion molding, ensuring that the aluminum rod has good mechanical properties and meets the requirements for the smooth progress of subsequent extrusion processes. Its feeding end is set to correspond to the discharge end of the heat preservation chamber 2. Under normal circumstances, the aluminum rod is heated to about 400° in the gas furnace 1 and to about 500° in the industrial frequency furnace 3.

[0028] In this embodiment, a heat-insulating chamber 2 is provided between the gas furnace 1 and the industrial frequency furnace 3, which can effectively reduce heat loss of the aluminum rod during the transfer process and avoid excessive temperature drop of the aluminum rod leading to increased reheating energy consumption of the industrial frequency furnace 3. A slide rail 8 is fixedly installed inside the heat-insulating chamber 2. The slide rail 8 is made of high-temperature resistant metal, and its structural strength can meet the force requirements when the aluminum rod slides. One end of the slide rail 8 is connected to the outlet of the gas furnace 1, and the other end is connected to the inlet of the industrial frequency furnace 3 via an adapter. At least one rotating wheel 7 is rotatably connected to the slide rail 8, and the number of rotating wheels 7 can be adjusted according to the aluminum rod. The length of the rotating wheel 7 is flexibly set and evenly distributed on the conveying path of the slide rail 8. A grinding component is embedded inside the rotating wheel 7. The grinding component uses a high-temperature resistant and wear-resistant hard grinding disc or steel wool. The end of the grinding disc extends out of the inner wall of the rotating wheel 7 and is adapted to the sliding trajectory of the aluminum rod in the slide rail 8. When the rotating wheel 7 rotates, it can fully contact the surface of the aluminum rod to achieve the grinding and removal of the oxide scale, thereby eliminating the "magnetic shielding layer", ensuring that the power frequency induced current can effectively penetrate into the interior of the aluminum rod, improving the induction heating efficiency, and avoiding the waste of electricity caused by extending the heating time and increasing the power of the equipment.

[0029] Furthermore, the slide 8 is tilted downwards from the side of the gas furnace 1 towards the side of the industrial frequency furnace 3. This tilt angle ensures that the aluminum rod slides smoothly along the slide 8 under its own weight, eliminating the need for additional conveying power and reducing energy consumption. It also prevents the aluminum rod from sliding too fast, which could lead to insufficient grinding or damage from collisions. A drive mechanism is installed on the slide 8 corresponding to the position of the rotating wheel 7. One end of the drive mechanism is connected to the rotating wheel 7, and the other end is in contact with the billet 6 located inside the slide 8. Its function is to convert the gravitational potential energy generated by the billet 6 sliding inside the slide 8 into the rotational mechanical energy of the rotating wheel 7 through a mechanical transmission structure. This drives the rotating wheel 7 and the internal grinding components to rotate synchronously, thereby improving the quality of oxide scale removal from the aluminum rod surface, further improving the efficiency of subsequent induction heating, shortening the heating time, and reducing the power of the industrial frequency furnace 3. It also eliminates the need for external motors or other power sources, achieving energy-saving drive for oxide scale grinding. This ensures that the grinding operation is synchronized with the aluminum rod conveying process, saving electricity and improving production efficiency.

[0030] In one embodiment, to fully utilize the waste heat generated during the heating process of the gas furnace 1 and reduce overall energy consumption, the gas furnace 1 is specially equipped with a waste heat recovery mechanism. This waste heat recovery mechanism adopts a mature flue gas waste heat recovery structure and mainly consists of a waste heat collection hood, heat exchange tubes, filter components, and conveying pipes. The waste heat collection hood is set corresponding to the exhaust port of the gas furnace 1 and can efficiently collect the high-temperature flue gas emitted during the combustion process of the gas furnace 1. The filter components are used to filter dust and impurities in the flue gas to prevent impurities from clogging subsequent pipes and nozzles, ensuring the long-term stable operation of the waste heat recovery system. Several hot air nozzles are evenly fixedly installed on the upper inner wall of the heat preservation chamber 2. All hot air nozzles point towards the surface of the slide rail 8, and the nozzle outlets correspond to the sliding trajectory of the aluminum rod on the slide rail 8, ensuring that the sprayed hot air can evenly cover the surface of the aluminum rod and achieve all-round heat preservation. Several air outlets are opened on the lower side wall of the heat preservation chamber 2. The air outlets are evenly distributed on both sides of the bottom of the heat preservation chamber 2, forming an upper and lower convection structure with the hot air nozzles above. This facilitates the circulation of hot air in the heat preservation chamber 2, timely discharge of cooled waste gas, and avoids excessive pressure in the chamber, ensuring the safe operation of the equipment.

[0031] To further improve waste heat utilization efficiency and enhance insulation, the exhaust pipe between the hot gas nozzle and the gas furnace 1 is made of high-temperature resistant metal. This exhaust pipe is coiled around the inner wall of the gas furnace 1, with the number of coils designed according to the inner wall dimensions and waste heat requirements of the gas furnace 1. This ensures sufficient heat exchange contact area between the exhaust pipe and the high-temperature environment inside the gas furnace 1. When the high-temperature flue gas collected by the waste heat recovery mechanism flows through this coiled exhaust pipe, it exchanges heat again with the high-temperature heat inside the gas furnace 1, further increasing the flue gas temperature. When the flue gas is sprayed onto the surface of the aluminum rod through the hot gas nozzle, it can better maintain the temperature of the aluminum rod, reduce the temperature drop loss of the aluminum rod during the transfer process, further reduce the subsequent supplementary heating energy consumption of the industrial frequency furnace 3, and also reduce the waste of waste heat, thus enhancing the energy-saving effect of the entire system. In addition, the low oxygen content in the flue gas after waste heat recovery is not conducive to the oxidation of the aluminum rod. This characteristic can further help protect the surface of the aluminum rod and reduce the occurrence of secondary oxidation. Specifically, during the combustion process of the gas furnace 1, the fuel consumes a large amount of oxygen. After being collected, filtered, and transported by the waste heat recovery mechanism, the oxygen content in the flue gas is significantly reduced, far lower than the oxygen content in the air. When this low-oxygen waste heat flue gas is injected into the insulation chamber 2 through hot gas nozzles and covers the surface of the aluminum rod, a low-oxygen protective atmosphere is formed around the aluminum rod, effectively isolating the surface of the aluminum rod from contact with oxygen in the air. Since the aluminum rod is still at a high temperature after being preheated by the gas furnace 1, if it comes into contact with air, the surface is very easy to oxidize again and form a new aluminum oxide scale. The coverage of low-oxygen flue gas can significantly inhibit this secondary oxidation process, preventing the formation of an oxide layer on the freshly polished aluminum rod surface. This ensures that the aluminum rod is in a clean state when it enters the industrial frequency furnace 3, further ensuring the efficiency of industrial frequency induction heating. At the same time, there is no need to introduce inert gas for isolation, maximizing the use of waste gas.

[0032] In one embodiment, the slide 8 adopts an adjustable tilt angle structure (the adjustment method can be a common one, which will not be elaborated in detail here). The tilt slope can be flexibly adjusted according to aluminum billet 6 of different specifications and weights to adapt to the grinding and conveying operations of different aluminum billets. This avoids the industry problem that a single fixed tilt angle cannot adapt to multiple specifications of billets 6 and is prone to excessively fast sliding or sliding jamming. In the actual production process, the weight and diameter of aluminum billets vary. The heavier the aluminum billet, the greater the gravitational component of its own sliding force and the faster the sliding acceleration. If a fixed large tilt angle is used, the heavy aluminum billet will slide at high speed in the slide 8, and the contact time with the grinding components will be too short. This can easily lead to incomplete oxide scale grinding and local residue. At the same time, high-speed impact can also cause deformation of the aluminum billet end and excessive wear of the grinding disc, reducing the service life of the equipment and the processing accuracy of the product. Based on the principle of mechanical balance, this system is equipped with an adaptive tilt angle adjustment logic. When the weight of the aluminum rod increases, the tilt angle of the corresponding slide 8 is appropriately reduced. By reducing the gravitational component of the downward sliding force, the sliding speed of the heavy aluminum rod is slowed down, effectively extending the contact time between the aluminum rod and the grinding components, ensuring that the oxide scale is removed in all directions and evenly. For lighter, smaller aluminum rods, the tilt angle of the slide 8 can be appropriately increased to compensate for the deficiencies of insufficient weight, sliding jamming, and insufficient driving force of the light aluminum rods. This ensures that the light aluminum rods can slide smoothly, providing sufficient power to the drive mechanism and ensuring the normal operation of the grinding components. This adjustable tilt angle structure allows the slide 8 to adapt to aluminum rod blanks 6 of different diameters and weights, taking into account the conveying stability and grinding uniformity of various blanks 6, greatly improving the versatility and adaptability of the equipment, further optimizing the working effect of gravity self-driven grinding, and adapting to the needs of large-scale, multi-specification aluminum profile continuous production.

[0033] In one embodiment, to ensure the slide rail 8 is securely installed and can stably bear the weight and force of the sliding aluminum rod, while providing a reliable installation support foundation for the drive mechanism, a support frame 201 is fixedly connected to the bottom of the slide rail 8. The support frame 201 is made of high-strength steel and has an overall frame structure. Its height is designed to maintain the slide rail 8 at a preset tilt angle and ensure the stability of the center of gravity of the entire system, preventing the slide rail 8 from shifting or the equipment from shaking due to the impact force generated when the aluminum rod slides. The slide rail 8 has an integrally formed sliding cavity inside. The cross-section of the sliding cavity is an arc-shaped structure that matches the shape of the aluminum rod, ensuring that the billet 6 (i.e., the aluminum rod) slides smoothly on the inner wall of the sliding cavity and remains in contact with the inner wall of the sliding cavity during the sliding process, ensuring the stability of the sliding trajectory.

[0034] The drive mechanism, as a transmission structure that converts gravitational potential energy into rotational mechanical energy, includes a sliding rod 205 slidably connected to the slide rail 8, an abutment rod 207 fixedly connected to the sliding rod 205 and located inside the sliding cavity, a steel wire rope 2021 fixedly connected to one end of the sliding rod 205 away from the abutment rod 207, a pulley assembly 202 mounted on the slide rail 8 and the support frame 201, and a drive wheel 203 rotatably connected to the support frame 201. These components work together to achieve stable power transmission. The abutment rod 207 is located inside the sliding cavity, and its extension direction is consistent with the sliding direction of the aluminum rod, ensuring it abuts against the end of the aluminum rod. This allows the thrust generated when the aluminum rod slides to be transmitted to the abutment rod 207, thereby driving the sliding rod 205 to slide synchronously. Both the drive wheel 203 and the rotating wheel 7 have meshing external gear rings 701 on their outer circumferences. The external gear rings 701 are made of high-strength gear steel and can efficiently transmit the rotational mechanical energy of the drive wheel 203 to the rotating wheel 7, causing the rotating wheel 7 to rotate synchronously. One end of the drive wheel 203 is coaxially fixed to a drum 2025 for winding the wire rope 2021 via a key connection. The drum 2025 rotates synchronously with the drive wheel 203. The surface of the drum 2025 is provided with spiral grooves to regulate the winding trajectory of the wire rope 2021, prevent the wire rope 2021 from becoming tangled or loose, and ensure that the wire rope 2021 can be stably wound and released.

[0035] The wire rope 2021 in the drum 2025 is fixedly connected to the sliding rod 205 through the guide traction of the pulley assembly 202. The pulley assembly 202 changes the direction of the tension of the wire rope 2021 and reduces the wear of the wire rope 2021, ensuring that the tension generated when the sliding rod 205 slides can be transmitted to the drum 2025. The specific transmission logic is as follows: When the aluminum rod slides down along the sliding cavity, the end of the aluminum rod pushes the abutment rod 207. The abutment rod 207 drives the sliding rod 205 to slide down synchronously along the slide rail 8. The sliding rod 205 pulls the steel wire rope 2021 connected to it. Under the guidance of the pulley assembly 202, the steel wire rope 2021 drives the drum 2025 to rotate. The drum 2025 is coaxially fixed with the drive wheel 203, which in turn drives the drive wheel 203 to rotate synchronously. Since the drive wheel 203 and the rotating wheel 7 mesh with each other through the external gear ring 701, the rotation of the drive wheel 203 will drive the rotating wheel 7 to rotate synchronously, and finally drive the grinding component inside the rotating wheel 7 to rotate, realizing the grinding operation of the oxide scale on the surface of the aluminum rod. The entire transmission process does not require any external power source and is driven entirely by the gravitational potential energy of the aluminum rod. It is energy-saving and can ensure that the grinding operation and the aluminum rod conveying process are synchronized. It improves production efficiency and does not require an additional motor to drive the grinding component, saving energy.

[0036] In one embodiment, to achieve automatic reset of the drive mechanism and ensure continuous and stable aluminum rod grinding operations, preventing the subsequent aluminum rod from failing to properly drive the grinding components due to the drive mechanism's inability to reset, a coil spring box 204 is fixedly connected to the end of the drive wheel 203 away from the drum 2025 by bolts. A coil spring is centrally installed inside the coil spring box 204. The coil spring is made of high-strength elastic alloy material, possessing excellent elastic reset performance and high-temperature resistance, capable of adapting to the high-temperature working environment inside the insulation chamber 2. Its elastic deformation range is calculated to match the sliding stroke of the drive mechanism, ensuring sufficient and stable reset force. The outer end of the coil spring is fixedly connected to the inner wall of the coil spring box 204 by welding, and the connection is reinforced to ensure that the coil spring will not detach from the coil spring box 204 during the process of torsion storage and release of elastic force. The inner end of the coil spring is fixedly connected to the support frame 201 by snap-fit ​​or welding, so that one end of the coil spring is fixed, while the other end rotates synchronously with the coil spring box 204 and the drive wheel 203. When the aluminum rod slides along the sliding cavity and pushes the drive mechanism to work, the drive wheel 203 drives the coil spring box 204 to rotate synchronously, thereby twisting the coil spring to store energy. After the aluminum rod is finished being ground and transferred to the industrial frequency furnace 3 by the transfer component, the pushing force of the aluminum rod on the abutment rod 207 disappears, the coil spring releases the stored elastic potential energy, drives the coil spring box 204 and the drive wheel 203 to rotate in the opposite direction, thereby driving the drum 2025 to rotate in the opposite direction, retracting the wire rope 2021, and finally realizing the automatic reset of the sliding rod 205, the abutment rod 207 and the abutment plate 2071, so that they return to the initial working position and wait for the next aluminum rod to push. This ensures that the entire system can achieve continuous and uninterrupted grinding operations, greatly improves production efficiency, and at the same time reduces manual intervention and lowers labor maintenance costs.

[0037] In one embodiment, to ensure that the sliding rod 205 can slide smoothly along a preset trajectory and avoid deviation or rotation during sliding, thereby ensuring the stability of the drive mechanism transmission, a groove is provided inside the slide rail 8 corresponding to the installation position of the sliding rod 205. The cross-sectional shape of the groove is adapted to the shape of the sliding rod 205, and the length of the groove matches the sliding stroke of the sliding rod 205, ensuring that the sliding rod 205 can slide smoothly throughout the entire groove without any disengagement. The sliding rod 205 and the groove are slidably connected by a clearance fit. The clearance is controlled within a preset reasonable range, which ensures both the flexibility of the sliding rod 205 and prevents the sliding rod 205 from deviating due to excessive clearance, ensuring that the sliding rod 205 always slides along the extension direction of the groove, thereby ensuring the accuracy of the power transmission of the drive mechanism.

[0038] Meanwhile, to further prevent the sliding rod 205 from rotating and deflecting during the sliding process, which would cause the abutment rod 207 to fail to abut against the end of the aluminum rod and the tension direction of the wire rope 2021 to deviate, the sliding rod 205 is designed as a square structure. The square sliding rod 205 forms a limiting fit with the square cross section of the slide groove. By utilizing the limiting effect of the corners of the square structure, the sliding rod 205 is prevented from rotating within the slide groove, ensuring that the sliding rod 205 can only slide in a straight line along the extension direction of the slide groove, thus providing a reliable guarantee for the stable transmission of the drive mechanism. The end of the chute near the wire rope 2021 has a slot 802. The size of the slot 802 is larger than the diameter of the wire rope 2021, allowing the wire rope 2021 to pass through smoothly. The pulley assembly 202, which is a component for changing the direction of the tension of the wire rope 2021 and reducing the wear of the wire rope 2021, specifically includes a first pulley 2022 rotatably connected to the slot 802, a support rod 2023 fixed to the support frame 201, and a second pulley 2024 rotatably connected to the top of the support rod 2023. The three components work together to realize the change of the direction of the tension of the wire rope 2021, ensuring that the tension can be efficiently and stably transmitted to the drum 2025. The first pulley 2022 is rotatably connected to the inside of the outlet 802, and its rotation axis is perpendicular to the extension direction of the outlet 802, which ensures that the first pulley 2022 can rotate flexibly, reduces the friction between the wire rope 2021 and the edge of the outlet 802, and avoids the wire rope 2021 being worn.

[0039] The support rod 2023 is welded to the support frame 201, and the connection is reinforced to withstand the tension of the second pulley 2024 and the wire rope 2021, preventing breakage after long-term use and ensuring the stable installation of the second pulley 2024. The height of the support rod 2023 ensures that the installation position of the second pulley 2024 forms a reasonable transmission trajectory with the first pulley 2022 and the drum 2025, facilitating the winding and traction of the wire rope 2021. The second pulley 2024 is rotatably connected to the top of the support rod 2023 via a bearing. Its rotation axis is perpendicular to the rotation axis of the first pulley 2022, and parallel to the rotation axis of the drum 2025, thereby achieving a 90° reversal of the tension direction of the wire rope 2021, adapting to the power transmission requirements between the linear sliding of the sliding rod 205 and the rotational movement of the drum 2025.

[0040] To ensure the smooth and orderly transmission of tension by the wire rope 2021, after exiting the drum 2025, the wire rope 2021 is sequentially wound around the second pulley 2024 and the first pulley 2022 according to a preset trajectory. During the winding process, the wire rope 2021 is ensured to be tightly fitted with the grooves of the two pulleys, without any loosening or slippage, thus avoiding tension transmission loss or transmission jamming due to improper winding of the wire rope 2021. Simultaneously, after being guided and redirected by the two pulleys, the output direction of the wire rope 2021 in the first pulley 2022 is consistent with the sliding direction of the sliding rod 205. This ensures that the tension generated when the sliding rod 205 slides can be effectively transmitted to the drum 2025 through the wire rope 2021, driving the drum 2025 to rotate, thereby driving the rotating wheel 7 and the grinding assembly to work. This ensures the transmission stability and energy-saving effect of the entire drive mechanism, while minimizing wear on the wire rope 2021 and extending its service life.

[0041] In one embodiment, to optimize the contact transmission effect, improve grinding efficiency and thoroughness, and ensure efficient grinding when the aluminum rod contacts the grinding component, an abutment plate 2071 is provided at one end of the abutment rod 207 used to abut against the blank 6 (aluminum rod). The abutment plate 2071 serves as a transition contact component between the abutment rod 207 and the aluminum rod. It is made of high-temperature resistant and wear-resistant metal sheet with a smooth surface treatment. This increases the contact area with the end of the aluminum rod, ensuring that the thrust generated when the aluminum rod slides can be transmitted evenly and stably to the abutment rod 207. This avoids the aluminum rod end from being subjected to concentrated force and local extrusion deformation due to insufficient contact area. It also prevents the abutment plate 2071 from scratching the surface of the aluminum rod, thus ensuring the surface quality of the aluminum rod.

[0042] In the initial state before contact with the billet 6 (aluminum rod), the abutment plate 2071 is positioned on the side of the grinding assembly away from the industrial frequency furnace 3, i.e., upstream in the sliding direction of the aluminum rod. The distance between the abutment plate 2071 and the grinding assembly is calculated to be slightly smaller than the diameter of the aluminum rod, ensuring that after the aluminum rod slides into the slide 8, it can first contact the abutment plate 2071 and push the abutment plate 2071 to move, and then continue to slide a certain distance before contacting the grinding assembly. Therefore, in this embodiment, the rotating wheel 7 can rotate in advance before the billet 6 (aluminum rod) and the grinding assembly actually come into contact, allowing the grinding assembly to reach a stable rotational speed in advance.

[0043] When the aluminum rod slides down the inclined slide 8, it first contacts the abutment plate 2071 located upstream. The aluminum rod, relying on its own weight, pushes the abutment plate 2071, which in turn drives the abutment rod 207 and sliding rod 205 to slide synchronously along the slide groove. The sliding rod 205 pulls the wire rope 2021, which, through the guide traction of the pulley assembly 202, drives the drum 2025 and drive wheel 203 to rotate. The drive wheel 203, through the engagement of the external gear ring 701, drives the rotating wheel 7 and the internal grinding assembly to rotate synchronously. During the time the aluminum rod continues to slide along the slide 8 until it contacts the grinding assembly, the rotating wheel 7 and the grinding assembly can... Under the continuous thrust of the aluminum rod, the rotation speed is gradually increased. When the aluminum rod comes into contact with the grinding component, the grinding component is already in a high-speed and stable rotation state, which can efficiently grind the oxide scale on the surface of the aluminum rod. This avoids problems such as incomplete grinding and oxide scale residue that occur when the aluminum rod comes into contact with a stationary or low-speed rotating grinding component. At the same time, it also reduces the initial friction loss between the grinding component and the surface of the aluminum rod, extends the service life of the grinding component, and ensures that the oxide scale on the surface of each aluminum rod can be removed evenly and thoroughly, providing a clean aluminum rod surface for subsequent industrial frequency induction heating, and further ensuring heating efficiency and product quality.

[0044] In one embodiment, to prevent the aluminum rod from slipping off the end of the slide rail 8 during grinding and causing damage, and to provide a stable transfer point for the transfer assembly, a baffle 804 is fixedly installed at the lower end of the sliding cavity. This baffle 804 is made of high-strength, high-temperature resistant metal and is welded to the slide rail 8. The connection point is reinforced and stress-relieved to withstand the impact force generated when the aluminum rod slides, preventing deformation after long-term use and ensuring the stability and reliability of the limiting mechanism. The height of the baffle 804 is slightly higher than the inner wall of the sliding cavity, effectively preventing the aluminum rod from continuing to slide without hindering the transfer assembly's gripping or pushing of the aluminum rod.

[0045] The distance between the baffle 804 and the rotating wheel 7 is greater than the length of the billet 6 (aluminum rod), ensuring that the aluminum rod can completely slide out of the grinding area. This allows the entire surface of the aluminum rod to fully contact the grinding components inside the rotating wheel 7, achieving comprehensive and thorough removal of the oxide scale. This prevents localized oxide scale residue caused by the aluminum rod not completely sliding out of the grinding area, which could affect the efficiency of subsequent induction heating. Simultaneously, this distance also provides ample working space for the transfer component, ensuring that it can smoothly extend between the baffle 804 and the rotating wheel 7 to complete the gripping and transfer operation of the aluminum rod. This avoids problems such as transfer jamming or the aluminum rod falling due to insufficient working space.

[0046] To ensure a smooth and efficient transfer of the polished aluminum bars to the induction furnace 3, preventing slippage or displacement during the transfer process, a transfer assembly is installed between the slide 8 and the induction furnace 3. This assembly utilizes a mature automated transfer structure and can be equipped with a mechanical gripper, a pushing cylinder, or a chain conveyor, depending on production needs. Its installation position is aligned with the end of the slide 8 and the feed inlet of the induction furnace 3, ensuring the aluminum bars can be smoothly transferred from the slide 8 into the furnace 3. This seamless transfer improves production efficiency and reduces manual intervention. The transfer assembly's stroke and gripping force have been calibrated to accommodate aluminum bars of different specifications, ensuring stable gripping and pushing without causing pressure or scratches on the surface, thus guaranteeing the surface quality of the aluminum bars. To further improve the transfer stability of the transfer component, a number of grooves 801 are evenly provided on the slide 8 between the baffle 804 and the rotating wheel 7. The number of grooves 801 is reasonably set according to the width of the slide 8 and the specifications of the aluminum rod. The spacing between adjacent grooves 801 is kept consistent to ensure that the transfer component can grasp the rod according to the grooves 801, thereby improving the stability and reliability of the transfer.

[0047] In one embodiment, a boss 803 is fixedly provided on the slide rail 8. The boss 803 is located on the side of the baffle 804 away from the sliding cavity, that is, at the end of the slide rail 8 and on the outside of the baffle 804. The length of the boss 803 is designed according to the preset sliding stroke of the sliding rod 205 and the specifications of the aluminum rod. Its function is to extend the sliding distance of the sliding rod 205, so that when the aluminum rod slides along the slide rail 8, it can push the sliding rod 205 to slide on the boss 803. This allows the sliding rod 205 to pull the wire rope 2021 for a longer stroke, driving the drum 2025, drive wheel 203 and rotating wheel 7 to rotate for a longer time. This ensures that the grinding assembly can fully grind the surface of the aluminum rod, avoiding the problem of insufficient grinding area and incomplete oxide scale removal due to insufficient sliding stroke of the sliding rod 205. This further improves the oxide scale removal effect and provides a cleaner aluminum rod surface for subsequent induction heating. Meanwhile, a stop rod 206 is fixedly connected to the sliding rod 205 and the abutment rod 207. The connection between the stop rod 206 and the sliding rod 205 and the abutment rod 207 is reinforced to ensure a firm connection. This connection can withstand the return force of the coil spring in the initial state and the impact force when the aluminum rod is pushed, preventing loosening or breakage after long-term use. In the initial state, when the aluminum rod is not in contact with the abutment plate 2071 and the drive mechanism is in the reset state, the stop rod 206 abuts against the end face of the boss 803. Through the limiting effect of the boss 803 on the stop rod 206, the sliding rod 205, the abutment rod 207, and the abutment plate 2071 are fixed in the preset initial position. This ensures that the abutment plate 2071 is located upstream of the grinding component and maintains a preset distance from the grinding component, preparing for the subsequent rotation of the grinding component after the aluminum rod enters. At the same time, this initial positioning structure can also prevent the sliding rod 205 from moving excessively after the coil spring is reset, prevent the abutment plate 2071 from shifting, and ensure the initial state stability of the entire drive mechanism.

[0048] In one embodiment, in order to achieve a smooth and collision-free connection of the aluminum rod from the outlet of the gas furnace 1 to the sliding cavity of the slide rail 8, and to avoid surface scratches or deformation caused by the aluminum rod falling or colliding during the transfer process, or to avoid affecting the continuity of production due to poor connection, in this embodiment, one end of the slide rail 8 connected to the outlet of the gas furnace 1 is connected to a transfer frame 5 by a hinge. The transfer frame 5 serves as a transition transfer component for the aluminum rod from the gas furnace 1 to the slide rail 8. It is made of high-temperature resistant metal material and has an arc-shaped transfer cavity inside that is adapted to the shape of the aluminum rod.

[0049] A telescopic component 4 is fixedly installed on the support frame 201 at the position corresponding to the transfer frame 5. The telescopic component 4 serves as the power source for adjusting the angle of the transfer frame 5. It adopts a hydraulic telescopic rod or electric telescopic rod with stable structure and high telescopic accuracy. Its selection is determined according to the weight of the transfer frame 5, the weight of the aluminum rod, and the adjustment stroke, ensuring that the telescopic component 4 can provide sufficient driving force to realize the smooth rotation and angle adjustment of the transfer frame 5. One end of the telescopic component 4 is hinged to the support frame 201 through a hinge seat, and the other end of the telescopic component 4 is also hinged to the bottom of the transfer frame 5 through a hinge seat. The connection between the hinge seat and the transfer frame 5 is fixed by welding to ensure a firm connection. This allows the telescopic power of the telescopic component 4 to be smoothly transmitted to the transfer frame 5, driving the transfer frame 5 to rotate flexibly around the hinge point with the slide rail 8 to realize angle adjustment.

[0050] The telescopic movement of the telescopic component 4 can adjust the tilt angle of the transfer frame 5, thereby aligning the transfer frame 5 with the outlet and sliding cavity of the gas furnace 1 to meet different needs of aluminum rod transfer. The specific process is as follows: When the aluminum rod is preheated in the gas furnace 1 and ready to be discharged, the telescopic component 4 extends and retracts according to a preset program, pushing the transfer frame 5 to rotate around the hinge point with the slide rail 8, so that the feeding end of the transfer frame 5 is aligned with the discharge port of the gas furnace 1, and the tilt angle of the transfer frame 5 is adapted to the tilt angle of the discharge port of the gas furnace 1 (e.g., in a horizontal state), ensuring that the aluminum rod can be smoothly moved from the discharge port of the gas furnace 1 into the transfer cavity of the transfer frame 5, avoiding the aluminum rod from falling or colliding; after the aluminum rod has completely fallen into the transfer frame 5, the telescopic component 4 extends and retracts again, adjusting the tilt angle of the transfer frame 5 in the opposite direction, so that the discharge end of the transfer frame 5 is aligned with the sliding cavity of the slide rail 8, and the tilt angle of the transfer frame 5 is consistent with the tilt angle of the sliding cavity, ensuring that the aluminum rod in the transfer frame 5 can rely on its own gravity to smoothly and steadily slide into the sliding cavity of the slide rail 8, realizing the transfer of the aluminum rod from the gas furnace 1 to the slide rail 8.

[0051] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. An energy-saving aluminum rod heating system, characterized in that, include: A gas furnace (1) is used to preheat the billet (6); The industrial frequency furnace (3) is used to heat the preheated billet (6); A heat-insulating chamber (2) is located between the gas furnace (1) and the industrial frequency furnace (3); The heat preservation chamber (2) is provided with a slide (8). One end of the slide (8) is connected to the outlet of the gas furnace (1), and the other end is connected to the inlet of the industrial frequency furnace (3). A rotating wheel (7) is rotatably connected to the slide (8). The rotating wheel (7) is provided with a grinding component for grinding the surface of the blank (6) in the slide (8). The slide (8) is inclined downward from the gas furnace (1) and points towards the industrial frequency furnace (3); the slide (8) is provided with a driving mechanism, which is connected to the rotating wheel (7) and the billet (6) located inside the slide, so that when the billet (6) slides inside the slide (8), the driving mechanism converts the gravitational potential energy of the billet (6) into the rotational mechanical energy of the rotating wheel (7).

2. The energy-saving aluminum rod heating system according to claim 1, characterized in that, The gas furnace (1) is equipped with a waste heat recovery mechanism, the upper part of the heat insulation chamber (2) is equipped with several hot air nozzles pointing to the slide (8), and the lower part of the heat insulation chamber (2) is equipped with several air outlets. The hot air nozzle is connected to the air outlet pipe of the waste heat recovery mechanism.

3. The energy-saving aluminum rod heating system according to claim 2, characterized in that, The gas outlet pipe between the hot gas nozzle and the gas furnace (1) is coiled around the inner wall of the gas furnace (1) to achieve heat exchange between the gas outlet pipe and the interior of the gas furnace (1).

4. The energy-saving aluminum rod heating system according to claim 1, characterized in that, A support frame (201) is fixedly connected to the bottom of the slide rail (8). The slide rail (8) includes a sliding cavity. The blank (6) slides on the sliding cavity. The driving mechanism includes a sliding rod (205) slidably connected to the slide rail (8), an abutment rod (207) connected to the sliding rod (205) and located on the sliding cavity, a wire rope (2021) connected to one end of the sliding rod (205) away from the abutment rod (207), a pulley assembly (202) provided on the slide rail (8) and / or the support frame (201), and a drive wheel (203) rotatably connected to the support frame (201). One end of the abutment rod (207) is connected to the support frame (201). One end of the blank (6) located inside the sliding cavity abuts against the drive wheel (203) and the rotating wheel (7), which are provided with meshing external gear rings (701). One end of the drive wheel (203) is fixedly connected to a drum (2025) for winding the wire rope (2021). The wire rope (2021) in the drum (2025) is connected to the sliding rod (205) by the traction of the pulley assembly (202), so that when the sliding rod (205) slides, the wire rope (2021) drives the drum (2025) to rotate and causes the drive wheel (203) and the rotating wheel (7) to rotate.

5. The energy-saving aluminum rod heating system according to claim 4, characterized in that, The drive wheel (203) is fixedly connected to a spring box (204) at the end opposite to the drum (2025). A spring is installed inside the spring box (204). The outer end of the spring is fixedly connected to the spring box (204), and the inner end of the spring is fixedly connected to the support frame (201) to realize the reset of the drum (2025).

6. The energy-saving aluminum rod heating system according to claim 5, characterized in that, The slide rail (8) has a groove inside, and the sliding rod (205) is slidably connected to the groove. The sliding rod (205) is square. The groove has an outlet (802) at one end near the wire rope (2021). The pulley assembly (202) includes a first pulley (2022) rotatably connected to the outlet (802), a support rod (2023) fixed to the support frame (201), and a second pulley (2022) rotatably connected to the support rod (2023). 4) The rotation axes of the first pulley (2022) and the second pulley (2024) are perpendicular to each other, and the rotation axis of the second pulley (2024) is parallel to that of the drum (2025). After the wire rope (2021) comes out of the drum (2025), it is wound around the second pulley (2024) and the first pulley (2022) in sequence. The output direction of the wire rope (2021) in the first pulley (2022) is consistent with the sliding direction of the sliding rod (205).

7. The energy-saving aluminum rod heating system according to any one of claims 4-6, characterized in that, One end of the abutment rod (207) used to abut against the blank (6) is provided with an abutment plate (2071). In the initial state before abutting against the blank (6), the abutment plate (2071) is located on the side of the grinding assembly away from the industrial frequency furnace (3) so that the rotating wheel (7) rotates before the blank (6) comes into contact with the grinding assembly.

8. The energy-saving aluminum rod heating system according to claim 7, characterized in that, The lower end of the sliding cavity is provided with a baffle (804), and the distance between the baffle (804) and the rotating wheel (7) is greater than the length of the blank (6).

9. The energy-saving aluminum rod heating system according to claim 8, characterized in that, The slide rail (8) is provided with a boss (803), which is located on the side of the baffle (804) away from the sliding cavity. The sliding rod (205) is slidably connected to the boss (803) to increase the sliding distance of the sliding rod (205).

10. The energy-saving aluminum rod heating system according to any one of claims 4-6, characterized in that, One end of the slide (8) connected to the outlet of the gas furnace (1) is hinged to a transfer frame (5). The support frame (201) is provided with a telescopic member (4). One end of the telescopic member (4) is hinged to the support frame (201), and the other end is hinged to the bottom of the transfer frame (5). The extension and retraction of the telescopic member (4) can make the transfer frame (5) aligned with the outlet of the gas furnace (1) or the transfer frame (5) aligned with the sliding cavity.

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