Device for preheating die by utilizing waste gas of die-casting smelting furnace

Abstract

The utility model discloses a device for preheating a die by utilizing waste gas of a die-casting smelting furnace, which relates to the technical field of die preheating and is technically characterized by comprising a die-casting smelting furnace body, a waste gas eduction tube is fixedly mounted at the top of the die-casting smelting furnace body, and a purification mechanism is arranged on the right side of the die-casting smelting furnace body. The waste gas treatment device has the technical effects that by means of the ingenious design of a baffle, an air circulation hole, a snake-shaped bent pipe and other parts in the heat recovery mechanism, waste gas forms complex turbulent flow in a recovery box; and the contact area and time of the waste gas and the snake-shaped bent pipe are greatly increased, so that the heat energy recovery efficiency is improved. And meanwhile, the air can fully exchange heat with the high-temperature waste gas under the action of the fan, so that the recovery effect of heat energy is further improved. And not only is the energy consumption of die-casting production reduced, but also remarkable economic benefits are brought to enterprises.

Description

Technical Field

[0001] The utility model relates to the technical field of mold preheating, in particular to a device for preheating a mold by utilizing waste gas from a die-casting furnace. Background Art

[0002] During the die-casting process, the mold temperature has a crucial impact on the quality of the casting. Too low a mold temperature will lead to problems such as loose internal structure of the casting, difficulty in air discharge, and difficulty in molding. Therefore, the mold needs to be fully preheated before die-casting production.

[0003] Currently, heating the mold typically requires external energy sources such as gas and electricity, increasing costs. The high-temperature exhaust gases produced by the die-casting furnace during metal melting contain a significant amount of heat energy, which is often discharged out of the die-casting machine through pipes, resulting in energy waste. Therefore, we propose a novel device that utilizes the exhaust gases from the die-casting furnace to preheat the mold. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the shortcomings of the existing technology, the utility model provides a device for preheating the mold using the exhaust gas of the die-casting furnace, which solves the problem that the high-temperature exhaust gas generated by the die-casting furnace when melting metal is directly discharged out of the die-casting machine, causing energy waste.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a device for preheating a mold using exhaust gas from a die-casting furnace, comprising a die-casting furnace body, an exhaust gas outlet pipe being fixedly installed on the top of the die-casting furnace body, a purification mechanism being provided on the right side of the die-casting furnace body, and a heat recovery mechanism being provided on the right side of the purification mechanism.

[0008] The heat recovery mechanism includes a support platform, a recovery box is fixedly installed on the top of the support platform, a baffle is fixedly installed in the inner cavity of the recovery box, an air circulation hole is opened on the outer side of the baffle, a serpentine elbow is fixedly installed inside the baffle, an exhaust pipe is fixedly installed on the right side of the recovery box, and a fan is fixedly installed on the left side of the recovery box.

[0009] Preferably, the number of the baffles is four, wherein the air circulation holes on the four baffles are generally distributed in an up-and-down staggered manner.

[0010] Preferably, the right side of the serpentine elbow extends out of the recovery box.

[0011] Preferably, the purification mechanism includes a purification box fixedly mounted on the top of the exhaust gas outlet pipe, an activated carbon filter plate fixedly mounted inside the purification box, and a hot gas guide pipe fixedly mounted on the right side of the purification box.

[0012] Preferably, the right end of the hot gas guide pipe is fixedly connected to the left end of the serpentine bend pipe.

[0013] Preferably, the number of the activated carbon filter plates is three, and the three activated carbon filter plates are evenly distributed inside the purification box.

[0014] Preferably, a mold preheating mechanism is provided on the right side of the heat recovery mechanism, and the mold preheating mechanism includes a right-angle tube fixedly installed on the right end of the exhaust pipe, a switch valve fixedly installed on the lower end of the right-angle tube, a main pipe fixedly installed on the right end of the switch valve, a diversion pipe fixedly installed on the bottom of the main pipe, a conical wind hood fixedly installed on the lower end of the diversion pipe, a mold preheating chamber is provided on the outside of the diversion pipe, an insulation frame fixedly installed on the inner cavity of the mold preheating chamber, a mold placement table fixedly installed on the bottom of the inner cavity of the insulation frame, a mold body movably installed on the top of the mold placement table, and a temperature sensor fixedly installed on the inner wall of the insulation frame.

[0015] Preferably, the conical air hood is located directly above the mold body, and the conical air hood and the mold body are in a one-to-one correspondence.

[0016] Preferably, the lower end of the diversion pipe extends to the inside of the mold preheating chamber.

[0017] (3) Beneficial effects

[0018] Compared with the prior art, the present invention provides a method with the following beneficial effects:

[0019] 1. This utility model utilizes a purification mechanism to efficiently purify the high-temperature exhaust gas generated by the die-casting furnace. Three activated carbon filter plates within the purification mechanism effectively absorb harmful substances in the exhaust gas, such as particulate matter and hazardous gases, thereby significantly improving the exhaust gas quality and providing a clean, reliable exhaust gas source for subsequent heat recovery. This design not only effectively prevents environmental pollution from exhaust gas but also ensures the safety and stability of the heat recovery process.

[0020] 2. This utility model fully recovers and utilizes the heat energy in the die-casting furnace exhaust by incorporating a heat recovery mechanism. The ingenious design of the heat recovery mechanism's internal components, including the baffle, air circulation holes, and serpentine bends, creates a complex turbulent flow within the exhaust gas recovery tank, significantly increasing the contact area and duration between the exhaust gas and the serpentine bends, thereby improving heat recovery efficiency. Simultaneously, the fan allows for sufficient heat exchange between the air and the high-temperature exhaust gas, further enhancing heat recovery. This design not only reduces energy consumption in die-casting production but also brings significant economic benefits to the company.

[0021] 3. The utility model realizes precise preheating and temperature control of the mold by providing a mold preheating mechanism. The synergistic effect of the right-angle tube, switch valve, main pipe, diverter pipe, conical wind hood and other components inside the mold preheating mechanism enables hot air to be blown evenly and concentratedly toward the mold body, ensuring that all parts of the mold can be fully preheated. At the same time, the real-time monitoring and adjustment of the temperature sensor and control system ensure that the preheating temperature of the mold is always maintained within the optimal range, thereby improving the efficiency and quality of die-casting production. In addition, the design of the insulation frame also effectively reduces heat loss, further improving the preheating efficiency and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the temperature sensor structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the purification mechanism structure of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the activated carbon filter plate of the utility model;

[0026] Figure 5 This is a schematic diagram of the recycling box structure of the utility model;

[0027] Figure 6 This is a schematic diagram of the air circulation hole structure of the present utility model.

[0028] In the picture:

[0029] 1. Die-casting furnace body; 11. Exhaust gas outlet pipe;

[0030] 2. Purification mechanism; 21. Purification box; 22. Activated carbon filter plate; 23. Hot gas guide pipe;

[0031] 3. Heat recovery mechanism; 31. Support platform; 32. Recovery box; 33. Baffle; 34. Air circulation hole; 35. Serpentine elbow; 36. Exhaust pipe; 37. Fan;

[0032] 4. Mold preheating mechanism; 41. Right-angle pipe; 42. On-off valve; 43. Main flow pipe; 44. Diverter pipe; 45. Conical air hood; 46. Mold preheating chamber; 47. Insulation frame; 48. Mold placement table; 49. Mold body; 410. Temperature sensor. DETAILED DESCRIPTION

[0033] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0034] The utility model provides a technical solution:

[0035] See also Figures 1 to 6 A device for preheating a mold using waste gas from a die-casting furnace includes a die-casting furnace body 1, an exhaust gas outlet pipe 11 is fixedly installed on the top of the die-casting furnace body 1, a purification mechanism 2 is provided on the right side of the die-casting furnace body 1, and a heat recovery mechanism 3 is provided on the right side of the purification mechanism 2.

[0036] Heat recovery mechanism 3 includes a support platform 31, with a recovery box 32 fixedly mounted on its top. A baffle 33 is fixedly mounted within the inner cavity of recovery box 32. Air holes 34 are formed on the outer side of baffle 33, and a serpentine elbow 35 is fixedly mounted within baffle 33. An exhaust pipe 36 is fixedly mounted on the right side of recovery box 32, and a fan 37 is fixedly mounted on the left side of recovery box 32. Through the coordinated action of support platform 31, recovery box 32, baffle 33, its air holes 34, serpentine elbow 35, exhaust pipe 36, and fan 37, efficient heat recovery is achieved from the exhaust gas of the die-casting furnace. This design prolongs the contact time between the exhaust gas and the serpentine elbow 35, improves heat recovery efficiency, and uses the recovered heat energy for mold preheating, reducing energy consumption.

[0037] Furthermore, there are four baffles 33, and the air circulation holes 34 on the four baffles 33 are generally distributed in an up-and-down staggered manner. Through the four baffles 33 and the air circulation holes 34 distributed in an up-and-down staggered manner, the exhaust gas forms complex turbulence in the recovery box 32, increasing the contact area and time between the exhaust gas and the serpentine bend 35, thereby improving the heat recovery efficiency and ensuring that more heat energy is recovered and used for mold preheating.

[0038] Furthermore, a recovery box 32 is extended from the right side of the serpentine bend 35. The recovery box 32 is extended from the right side of the serpentine bend 35 to ensure that the exhaust gas after heat exchange can be discharged smoothly, avoiding affecting the heat recovery efficiency, while ensuring smooth airflow inside the device and improving the overall operation effect.

[0039] Furthermore, the purification mechanism 2 includes a purification box 21 fixedly installed on the top of the exhaust gas outlet pipe 11, an activated carbon filter plate 22 fixedly installed inside the purification box 21, and a hot gas guide pipe 23 fixedly installed on the right side of the purification box 21. The purification box 21 and the activated carbon filter plate 22 can effectively remove harmful substances in the exhaust gas of the die-casting furnace, thereby ensuring the quality of the exhaust gas recovered by heat energy; the hot gas guide pipe 23 ensures that the purified high-temperature exhaust gas smoothly enters the heat recovery mechanism 3, providing a reliable heat source for mold preheating.

[0040] Furthermore, the right end of the hot gas guide tube 23 is fixedly connected to the left end of the serpentine bend 35. The fixed connection between the hot gas guide tube 23 and the serpentine bend 35 ensures that the purified high-temperature exhaust gas can smoothly enter the heat recovery mechanism 3. The heat exchange area and time are increased through the serpentine bend 35, thereby improving the heat energy recovery efficiency and providing sufficient heat source for mold preheating.

[0041] Furthermore, there are three activated carbon filter plates 22, which are evenly distributed inside the purification box 21. The three activated carbon filter plates 22 are evenly distributed, which enhances the purification effect, ensures that harmful substances in the high-temperature exhaust gas are fully removed, provides high-quality gas for heat recovery, and ensures the stable operation of the device and the safety of the preheating mold.

[0042] Furthermore, a mold preheating mechanism 4 is provided on the right side of the heat recovery mechanism 3. The mold preheating mechanism 4 includes a right-angle tube 41 fixedly installed at the right end of the exhaust pipe 36, a switch valve 42 is fixedly installed at the lower end of the right-angle tube 41, a main pipe 43 is fixedly installed at the right end of the switch valve 42, a diversion pipe 44 is fixedly installed at the bottom of the main pipe 43, a conical wind hood 45 is fixedly installed at the lower end of the diversion pipe 44, a mold preheating chamber 46 is provided on the outside of the diversion pipe 44, an insulation frame 47 is fixedly installed in the inner cavity of the mold preheating chamber 46, a mold placement platform 48 is fixedly installed at the bottom of the inner cavity of the insulation frame 47, a mold body 49 is movably installed on the top of the mold placement platform 48, and a temperature sensor 410 is fixedly installed on the inner wall of the insulation frame 47. Through the fine design of the mold preheating mechanism 4, the hot air is precisely controlled and blown evenly to the mold. At the same time, the insulation frame 47 reduces heat loss, and the temperature sensor 410 monitors the temperature in real time to ensure the best mold preheating effect, achieve full utilization of energy and reduce costs.

[0043] Furthermore, the conical wind hood 45 is located directly above the mold body 49, and the conical wind hood 45 and the mold body 49 are in a one-to-one correspondence. The conical wind hood 45 ensures that the hot air is blown evenly and concentratedly toward the mold body 49, so that all parts of the mold are fully preheated, the preheating efficiency is improved, the quality of the casting is guaranteed, and at the same time, energy waste is reduced and costs are reduced.

[0044] Furthermore, the lower end of the diverter pipe 44 extends to the inside of the mold preheating chamber 46, and the hot air is directly blown to the mold body 49 by the diverter pipe 44 extending to the inside of the mold preheating chamber 46, thereby reducing heat loss, improving preheating efficiency, ensuring that the mold is evenly heated, and achieving the best preheating effect.

[0045] When used specifically, the working principle of the utility model is as follows:

[0046] During the die-casting process, the die-casting furnace 1 continuously melts metal, generating high-temperature exhaust gases. These gases are first discharged through the exhaust gas outlet pipe 11 and introduced into the purification mechanism 2. The core of the purification mechanism 2 is the purification box 21, which houses three carefully arranged activated carbon filter plates 22. These activated carbon filter plates 22 have a strong adsorption capacity and can efficiently remove harmful substances such as particulate matter and harmful gases from the exhaust gas, thereby ensuring the purification of the exhaust gas. The quality of the purified high-temperature exhaust gas is significantly improved, providing a strong guarantee for subsequent heat recovery.

[0047] Next, the purified high-temperature exhaust gas is transported to the heat recovery mechanism 3 through the hot gas guide pipe 23. The heat recovery mechanism 3 is cleverly and efficiently designed. It mainly consists of components such as a support platform 31, a recovery box 32, a baffle 33, air circulation holes 34, a serpentine bend 35, an exhaust pipe 36, and a fan 37. Four baffles 33 are carefully arranged inside the recovery box 32. The air circulation holes 34 on these baffles 33 are staggered in an up-and-down manner. This design causes the exhaust gas to form complex turbulence inside the recovery box 32, greatly increasing the contact area and time between the exhaust gas and the serpentine bend 35. The serpentine bend 35 is cleverly arranged inside the baffle 33. Through its winding path, it further prolongs the contact time between the exhaust gas and the pipe wall, thereby improving the heat recovery efficiency.

[0048] At the same time, fan 37 activates, drawing air from the left side of recovery tank 32 and exchanging heat with the high-temperature exhaust gas through the outer side of serpentine pipe 35. This process fully heats the air before it is eventually discharged through exhaust pipe 36. At this point, the heated air already contains a significant amount of heat energy recovered from the die-casting furnace exhaust, which is then used to preheat the mold. Furthermore, the heat-absorbed die-casting furnace exhaust is discharged directly into the atmosphere through the right end of serpentine pipe 35, thus minimizing environmental pollution.

[0049] The right end of the exhaust pipe 36 is connected to the right-angled pipe 41 of the mold preheating mechanism 4. An on-off valve 42, located at the lower end of the right-angled pipe 41, precisely controls the flow of hot air, thereby achieving accurate adjustment of the mold preheating temperature. The right end of the on-off valve 42 is connected to the main pipe 43. Diverter pipes 44 are evenly distributed at the bottom of the main pipe 43. Each diverter pipe 44 has a conical air hood 45 fixedly mounted at its lower end. The unique design of the conical air hood 45 evenly and centrally directs the hot air toward the mold body 49, ensuring that all parts of the mold are fully preheated.

[0050] The mold preheating mechanism 4 also includes a mold preheating chamber 46, which houses a heat preservation frame 47 and a mold placement platform 48. A mold body 49 is placed on the mold placement platform 48, ready for preheating. The lower end of the shunt pipe 44 extends into the mold preheating chamber 46, ensuring that hot air is blown directly toward the mold body 49. The heat preservation frame 47 effectively reduces heat loss, further improving preheating efficiency.

[0051] During the preheating process, temperature sensor 410 monitors the temperature of mold body 49 in real time and feeds this data back to the control system. When mold body 49 reaches the preset preheating temperature, the control system automatically adjusts the opening of on-off valve 42 to precisely control the flow of hot air, ensuring that the mold preheating temperature remains within the optimal range.

[0052] In summary, this device fully utilizes the heat energy from the high-temperature exhaust gas generated by the die-casting furnace. Through purification, heat recovery, and mold preheating, it achieves efficient energy utilization and significantly reduces costs. This innovative design not only improves the efficiency and quality of die-casting production, but also makes a positive contribution to the company's sustainable development.

[0053] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention that solve essentially the same technical problems and achieve essentially the same technical effects are included within the scope of protection of the present invention.

Claims

1. A device for preheating a mold using waste gas from a die-casting furnace, comprising a die-casting furnace body (1), characterized in that: An exhaust gas outlet pipe (11) is fixedly installed on the top of the die-casting furnace body (1), a purification mechanism (2) is provided on the right side of the die-casting furnace body (1), and a heat recovery mechanism (3) is provided on the right side of the purification mechanism (2); The heat recovery mechanism (3) comprises a support platform (31), a recovery box (32) is fixedly mounted on the top of the support platform (31), a baffle (33) is fixedly mounted in the inner cavity of the recovery box (32), an air circulation hole (34) is opened on the outer side of the baffle (33), a serpentine elbow (35) is fixedly mounted inside the baffle (33), an exhaust pipe (36) is fixedly mounted on the right side of the recovery box (32), and a fan (37) is fixedly mounted on the left side of the recovery box (32).

2. The device for preheating a mold using waste gas from a die-casting furnace according to claim 1, characterized in that: The number of the baffles (33) is four, wherein the air circulation holes (34) on the four baffles (33) are distributed in an upper and lower staggered manner as a whole.

3. The device for preheating a mold using waste gas from a die-casting furnace according to claim 1, characterized in that: The right side of the serpentine curved pipe (35) extends out of the recovery box (32).

4. The device for preheating a mold using waste gas from a die-casting furnace according to claim 1, characterized in that: The purification mechanism (2) comprises a purification box (21) fixedly mounted on the top end of the exhaust gas outlet pipe (11), an activated carbon filter plate (22) fixedly mounted inside the purification box (21), and a hot gas guide pipe (23) fixedly mounted on the right side of the purification box (21).

5. The device for preheating a mold using waste gas from a die-casting furnace according to claim 4, characterized in that: The right end of the hot gas guide pipe (23) is fixedly connected to the left end of the serpentine curved pipe (35).

6. The device for preheating a mold using waste gas from a die-casting furnace according to claim 4, characterized in that: The number of the activated carbon filter plates (22) is three, and the three activated carbon filter plates (22) are evenly distributed inside the purification box (21).

7. The device for preheating a mold using waste gas from a die-casting furnace according to claim 1, characterized in that: A mold preheating mechanism (4) is provided on the right side of the heat recovery mechanism (3). The mold preheating mechanism (4) comprises a right-angle tube (41) fixedly mounted on the right end of the exhaust pipe (36). A switch valve (42) is fixedly mounted on the lower end of the right-angle tube (41). A main pipe (43) is fixedly mounted on the right end of the switch valve (42). A diversion pipe (44) is fixedly mounted on the bottom of the main pipe (43). A conical wind hood (45) is fixedly mounted on the lower end of the diversion pipe (44). A mold preheating chamber (46) is provided on the outside of the diversion pipe (44). An insulation frame (47) is fixedly mounted on the inner cavity of the mold preheating chamber (46). A mold placement platform (48) is fixedly mounted on the bottom of the inner cavity of the insulation frame (47). A mold body (49) is movably mounted on the top of the mold placement platform (48). A temperature sensor (410) is fixedly mounted on the inner wall of the insulation frame (47).

8. The device for preheating a mold using waste gas from a die-casting furnace according to claim 7, characterized in that: The conical air hood (45) is located directly above the mold body (49), and the conical air hood (45) and the mold body (49) are in a one-to-one correspondence state.

9. The device for preheating a mold using waste gas from a die-casting furnace according to claim 7, characterized in that: The lower end of the diversion pipe (44) extends to the interior of the mold preheating chamber (46).

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