A lead alloy melting furnace for lead-acid batteries

Abstract

This utility model discloses a lead-acid battery lead alloy melting furnace, relating to the technical field of lead-acid battery processing equipment. Specifically, it is a lead-acid battery lead alloy melting furnace, including a furnace body and purification components. A support frame is fixedly installed below the furnace body. By setting up a purification box, a filter assembly, and a leaching assembly, the harmful gases generated during the melting process are treated in multiple stages. First, the leaching assembly uses an alkaline solution to spray the flue gas, causing lead fumes, lead dust, and other particulate matter to settle under the action of the alkaline solution. At the same time, acidic gases, such as sulfur dioxide, are removed through an acid-base neutralization reaction. Second, the filter assembly further filters the particulate matter in the flue gas, ensuring that the flue gas meets environmental standards before emission. This design effectively solves the problem of insufficient flue gas treatment in existing technologies, significantly reduces the emission of harmful gases, reduces environmental pollution, and protects the health and safety of operators.

Description

Technical Field

[0001] This utility model relates to the technical field of lead-acid battery processing equipment, specifically a lead alloy melting furnace for lead-acid batteries. Background Technology

[0002] In the production process of lead-acid batteries, the smelting of lead alloys is one of the key steps. Existing technologies have made some progress in the design and application of lead alloy melting furnaces for lead-acid batteries. For example, Chinese patent (CN 218155466 U) discloses a lead alloy melting furnace for lead-acid batteries. This furnace uses a three-layer lead pot design, with a spiral baffle in the middle layer. Combined with a negative pressure fan, this effectively improves the heating speed and energy utilization rate, while solving problems such as uneven heating, gas waste, and lead pot leakage in traditional furnaces. However, this existing technology still has certain limitations.

[0003] In actual production, the smelting of lead alloys for lead-acid batteries generates a large amount of harmful gases, such as lead fumes, lead dust, sulfur dioxide, and acid mist. Direct emission of these gases causes serious environmental pollution and harms the health of operators. While existing furnace technologies improve smelting efficiency to some extent, their measures for treating the harmful gases generated during the smelting process are relatively inadequate. For example, traditional furnaces typically rely on simple ventilation equipment for gas emission, which is insufficient to effectively remove pollutants from the harmful gases. Furthermore, the lack of effective purification devices for the flue gas after smelting during operation means that harmful substances in the flue gas cannot be adequately treated, thus affecting the company's compliance with environmental emission standards.

[0004] Therefore, in the existing technology, furnace flue gas treatment mainly relies on simple filtration and adsorption devices. These devices are not effective in treating flue gas with complex components and cannot achieve deep purification of the flue gas. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a lead alloy melting furnace for lead-acid batteries, which solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a lead-acid battery lead alloy melting furnace, comprising a furnace body and a purification component for the exhaust gas after lead alloy melting of lead-acid batteries; a support frame is fixedly installed below the furnace body; the purification component includes a purification chamber, a filter assembly, a leaching assembly, and a first conveying pipe; the purification chamber has a leaching chamber and a treatment chamber respectively; the leaching chamber contains an alkaline solution, and the treatment chamber contains another alkaline solution; the filter assembly is installed on the upper inner wall of the treatment chamber of the purification chamber; the leaching assembly... The components are installed on the purification box and near the filtration chamber, with the spray end of the filtration assembly located at the top of the filtration chamber of the purification box; the inflow end of the first conveying pipe is fixedly installed to the top wall of the furnace body and the two are connected, the outflow end of the first conveying pipe is fixedly installed to the purification box and is connected to the middle of the filtration chamber, a second conveying pipe is fixedly installed on the purification box, the inflow end of the second conveying pipe is connected to the upper middle part of the filtration chamber, and the outflow end of the second conveying pipe is connected to the middle of the processing chamber; an exhaust pipe is fixedly installed on the top wall of the purification box and the inflow end of the exhaust pipe is connected to the processing chamber.

[0009] Optionally, the filtration assembly includes a water pump, a spray pipe, and multiple wide-angle nozzles. The inflow end of the water pump is connected to the bottom of the filtration chamber of the purification box. The spray pipe is fixedly installed in the upper part of the filtration chamber of the purification box, and each of the wide-angle nozzles is fixedly installed on the spray pipe, and the spray pipe is connected to each of the wide-angle nozzles respectively.

[0010] Optionally, the filter assembly includes a filter plate and a slide frame. The slide frame is fixedly installed on the four periphery of the filter plate and slidably installed in the processing chamber of the purification box, and the slide frame penetrates one side wall of the purification box.

[0011] Optionally, a first drain pipe and a second drain pipe are fixedly installed on the purification box. One end of the first drain pipe is connected to the filtration chamber of the purification box, and a first control valve is installed on the first drain pipe. One end of the second drain pipe is connected to the processing chamber of the purification box, and a second control valve is installed on the second drain pipe.

[0012] Optionally, a sliding frame is longitudinally slidably installed inside the filtration chamber of the purification box, and the four periphery of the sliding frame abuts against the inner sidewall of the filtration chamber of the purification box.

[0013] Optionally, a motor is fixedly installed on the outer wall of the purification box, and the motor is connected to the sliding frame and the sliding plate frame respectively; the motor drives the sliding frame to slide longitudinally; the motor drives the sliding plate frame to slide laterally.

[0014] Optionally, multiple floats are fixedly installed on the sliding frame, and each float drives the sliding frame to rise or fall under the action of buoyancy.

[0015] (III) Beneficial Effects

[0016] This utility model provides a lead alloy melting furnace for lead-acid batteries, which has the following beneficial effects:

[0017] This lead-acid battery lead alloy melting furnace employs a multi-stage treatment process for harmful gases generated during smelting, incorporating a purification chamber, a filter assembly, and a leaching assembly. First, the leaching assembly sprays an alkaline solution onto the flue gas, causing lead fumes, lead dust, and other particulate matter to settle under the influence of the alkaline solution. Simultaneously, acidic gases, such as sulfur dioxide, are removed through an acid-base neutralization reaction. Second, the filter assembly further filters particulate matter from the flue gas, ensuring that the flue gas meets environmental standards before emission. This design effectively solves the problem of insufficient flue gas treatment in existing technologies, significantly reducing the emission of harmful gases, minimizing environmental pollution, and protecting the health and safety of operators. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a lead alloy melting furnace for lead-acid batteries according to the present invention.

[0020] Figure 2 This is a three-dimensional structural diagram of a purification box in a lead alloy furnace for lead-acid batteries according to this utility model.

[0021] Figure 3 This is a cross-sectional view of a purification box in a lead alloy furnace for lead-acid batteries according to this utility model.

[0022] Figure 4 This is a top-view cross-sectional structural diagram of a purification box in a lead alloy furnace for lead-acid batteries according to this utility model.

[0023] Figure 5 This is a three-dimensional structural schematic diagram of a lead alloy melting furnace for lead-acid batteries according to Embodiment 2 of the present invention;

[0024] Figure 6 This is a cross-sectional view of the purification box in Embodiment 2 of the lead alloy furnace for lead-acid batteries according to this utility model.

[0025] In the diagram: 1. Support frame; 2. Furnace body; 3. Cover plate; 4. First conveying pipe; 5. Purification box; 6. Water pump; 7. Spray pipe; 8. Mounting plate; 9. Motor; 10. Gear; 11. Rack; 12. Limiting plate; 13. Connecting rod; 14. Sliding shaft; 15. Guide shaft; 16. Sliding frame; 17. Second conveying pipe; 18. Threaded rod; 19. Slide plate frame; 20. Filter plate; 21. Float. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying anything.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0028] Example 1, please refer to Figures 1 to 4 This utility model provides a technical solution: a lead alloy melting furnace for lead-acid batteries is used to melt lead alloys in batteries and to purify the flue gas generated after melting. The harmful gases generated after melting lead alloys in lead-acid batteries mainly include: lead fumes, lead dust, sulfur dioxide, and acid mist.

[0029] A lead-acid battery lead alloy melting furnace includes a furnace body 2 and a purification component for the exhaust gas after the lead alloy of the lead-acid battery is melted. A support frame 1 is fixedly installed below the furnace body 2.

[0030] The furnace body 2 has a cover plate 3 installed at its feed inlet. A purification unit is used to purify and vent the fumes generated during the lead alloy smelting process in the furnace body 2. A support frame 1 is used to support and fix the furnace body 2. The furnace body 2 may include, but is not limited to, an electric furnace (such as the Chuangmeiwei CMWRQL series, YC's 100-type electric furnace, etc.) or a gas furnace. The furnace body 2 is used to smelt the lead alloy in the battery.

[0031] The purification components include a purification chamber 5, a filter assembly, a filtration assembly, and a first conveying pipe 4. The purification chamber 5 has a filtration chamber and a treatment chamber. The filtration chamber of the purification chamber 5 contains an alkaline solution, and the treatment chamber of the purification chamber 5 contains another alkaline solution.

[0032] The alkaline solution contained in the filtration chamber of purification tank 5 includes, but is not limited to, sodium hydroxide solution. The treatment chamber of purification tank 5 contains another alkaline solution, including but not limited to limestone slurry, calcium hydroxide, and sodium hydroxide.

[0033] A filter assembly is installed on the upper inner wall of the treatment chamber of the purification chamber 5. A filtration assembly is installed on the purification chamber 5 near the filtration chamber, with the spray end of the filtration assembly located at the top of the filtration chamber of the purification chamber 5. The inflow end of the first conveying pipe 4 is fixedly installed and connected to the top wall of the furnace body 2, and the outflow end of the first conveying pipe 4 is fixedly installed to the purification chamber 5, and the outflow end of the first conveying pipe 4 is connected to the middle of the filtration chamber. A second conveying pipe 17 is fixedly installed on the purification chamber 5, with the inflow end of the second conveying pipe 17 connected to the upper middle part of the filtration chamber, and the outflow end of the second conveying pipe 17 connected to the middle of the treatment chamber. An exhaust pipe is fixedly installed on the top wall of the purification chamber 5, and the inflow end of the exhaust pipe is connected to the treatment chamber.

[0034] In this process, the flue gas generated during the lead alloy smelting of lead-acid batteries in furnace 2 flows sequentially through the first conveying pipe 4, the filtration chamber, the second conveying pipe 17, and the treatment chamber, before being discharged through the exhaust pipe. The filtration assembly is used to filter the flue gas in the filtration chamber. The filtration assembly atomizes an alkaline solution (such as sodium hydroxide solution) and sprays it out, ensuring it fully contacts the lead fumes and lead dust, causing them to settle. The alkaline solution can neutralize the acidic components in the lead fumes and lead dust, generating corresponding salts and water. Simultaneously, the wetting effect of the water causes the dust particles to adhere to each other, increasing their weight and causing them to settle, thus achieving the purpose of treating the lead fumes and lead dust in the flue gas. The alkaline solution (one of limestone slurry, calcium hydroxide, sodium hydroxide, etc.) contained in the purification box 5 is used to absorb sulfur dioxide. Sulfur dioxide is an acidic gas that can neutralize with alkaline substances, generating corresponding salts and water, thus achieving the purpose of removing sulfur dioxide. The filter assembly is used to dissolve and absorb acid mist and to perform secondary filtration of particulate matter in the gas.

[0035] Specifically, the filtration assembly includes a water pump 6, a spray pipe 7, and multiple wide-angle nozzles. The inflow end of the water pump 6 is connected to the bottom of the filtration chamber of the purification box 5. The spray pipe 7 is fixedly installed in the upper part of the filtration chamber of the purification box 5, and each wide-angle nozzle is fixedly installed on the spray pipe 7, with the spray pipe 7 connected to each wide-angle nozzle respectively.

[0036] The water pump 6 draws the alkaline solution from the filtration chamber of the purification tank 5 and atomizes it through the spray pipe 7 and various wide-angle nozzles. A filter screen is installed at the inlet of the water pump 6 to filter the drawn alkaline solution and prevent particulate matter in the solution from clogging the wide-angle nozzles. The atomized alkaline solution is then sprayed onto the flue gas through the wide-angle nozzles.

[0037] Specifically, the filter assembly includes a filter plate 20 and a slide frame 19. The slide frame 19 is fixedly installed on the four periphery of the filter plate 20 and slidably installed in the processing chamber of the purification box 5, and the slide frame 19 penetrates one side wall of the purification box 5.

[0038] The filter plate 20 includes, but is not limited to, a type of stainless steel wire mesh or fluoride fiber filter. A layer of alkaline adsorption material, such as calcium carbonate or magnesium hydroxide, is installed on the filter plate 20 to remove acid mist through acid-base neutralization reactions. For example, CaCO3 reacts with sulfuric acid mist to produce calcium sulfate and CO2. The sliding frame 19 facilitates installation and disassembly for subsequent maintenance.

[0039] Specifically, a first drain pipe and a second drain pipe are fixedly installed on the purification chamber 5. One end of the first drain pipe is connected to the filtration chamber of the purification chamber 5, and a first control valve is installed on the first drain pipe. One end of the second drain pipe is connected to the processing chamber of the purification chamber 5, and a second control valve is installed on the second drain pipe.

[0040] Both the first and second drain pipes are used for draining and injecting solutions, facilitating the removal of solutions from the filtration and treatment chambers of the purification tank 5 and the injection of solutions into these chambers, thus achieving the purpose of solution drainage or replenishment. A first control valve controls the opening and closing of the flow channel within the first drain pipe. A second control valve controls the opening and closing of the flow channel within the second drain pipe.

[0041] More specifically, a sliding frame 16 is longitudinally slidably installed inside the filtration chamber of the purification box 5, and the four periphery of the sliding frame 16 abuts against the inner sidewall of the filtration chamber of the purification box 5.

[0042] The sliding frame 16 is used to slide and wipe the inner wall of the filtration chamber of the purification box 5 by longitudinal sliding, so as to ensure the cleanliness of its inner wall and remove the particles adhering to the inner wall.

[0043] More specifically, a motor 9 is fixedly installed on the outer wall of the purification box 5, and the motor 9 is connected to the sliding frame 16 and the sliding plate frame 19 respectively. The motor 9 drives the sliding frame 16 to slide longitudinally. The motor 9 drives the sliding plate frame 19 to slide laterally.

[0044] A mounting plate 8 is fixedly installed on the outer wall of the purification chamber 5, and a motor 9 is fixedly installed on the mounting plate 8. A sliding shaft 14 and a guide shaft 15 are fixedly connected to the sliding frame 16, and the sliding shaft 14 and guide shaft 15 are arranged in parallel. Both the sliding shaft 14 and guide shaft 15 longitudinally penetrate the top wall of the purification chamber 5, and the top wall of the purification chamber 5 is slidably connected to the sliding shaft 14 and guide shaft 15, respectively. A gear 10 is fixedly installed on the output shaft end of the motor 9. A limit plate 12 is fixedly installed on the outer wall of the purification chamber 5, and a rack 11 is slidably installed on the limit plate 12. A connecting rod 13 is fixedly connected to the upper end of the rack 11, and the end of the connecting rod 13 away from the rack 11 is fixedly connected to the sliding shaft 14. The rack 11 meshes with the gear 10. In use, after the motor 9 starts, it drives the gear 10 to rotate. The gear 10 drives the connecting rod 13 and the sliding shaft 14 to move up and down through the rack 11, thereby driving the sliding frame 16 to move up and down. The motor 9 may include, but is not limited to, a servo motor or a stepper motor.

[0045] A threaded rod 18 is rotatably mounted on the purification chamber 5. One end of the motor 9 is connected to one end of the threaded rod 18, and the motor 9 drives the threaded rod 18 to rotate. The other end of the threaded rod 18 passes through the slide frame 19 and the two are threadedly connected. When the threaded rod 18 rotates, it pushes the slide frame 19 to slide laterally, thereby allowing the slide frame 19 to slide laterally into or out of the purification chamber 5, thus realizing the disassembly or installation of the slide frame 19 and the filter plate 20.

[0046] In practical implementation, due to the high temperature of the exhaust gas, all components in this technical solution are made of materials with high internal temperature and relatively stable performance. To avoid the impact of high temperature and other factors on the alkaline solution, this technical solution can also use similar products suitable for high temperatures as a substitute; or, by increasing the volume of the purification chamber and increasing the solution content, thereby expanding the heat absorption range, etc., to achieve the purpose of practical implementation.

[0047] Example 2, please refer to Figures 5 to 6 The main difference between this embodiment and embodiment one is that multiple floats 21 are fixedly installed on the slide frame 16, and each float 21 drives the slide frame 16 to rise or fall under the action of buoyancy.

[0048] In the purification chamber 5, after water is added or drained, the float 21 moves up and down with the liquid level, and the sliding frame 16 scrapes the inner wall of the purification chamber 5 during the up and down movement, thereby achieving the purpose of cleaning the inner wall of the purification chamber 5.

[0049] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0050] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lead acid battery lead alloy furnace characterized by: It includes a furnace body (2) and a purification component for the exhaust gas after lead alloy smelting of lead-acid batteries. A support frame (1) is fixedly installed below the furnace body (2). The purification components include a purification box (5), a filter assembly, a filtration assembly, and a first conveying pipe (4). The purification box (5) has a filtration chamber and a processing chamber respectively. The filtration chamber of the purification box (5) contains an alkaline solution, and the processing chamber of the purification box (5) contains another alkaline solution. The filter assembly is installed on the upper inner side wall of the treatment chamber of the purification box (5); the filtration assembly is installed on the purification box (5) and close to the filtration chamber, and the spray end of the filtration assembly is located at the top of the filtration chamber of the purification box (5). The inflow end of the first conveying pipe (4) is fixedly installed on the top wall of the furnace body (2) and the two are connected. The outflow end of the first conveying pipe (4) is fixedly installed on the purification box (5) and the outflow end of the first conveying pipe (4) is connected to the middle part of the filtration chamber. A second conveying pipe (17) is fixedly installed on the purification box (5). The inflow end of the second conveying pipe (17) is connected to the upper middle part of the filtration chamber and the outflow end of the second conveying pipe (17) is connected to the middle part of the processing chamber. An exhaust pipe is fixedly installed on the top wall of the purification box (5) and the inflow end of the exhaust pipe is connected to the processing chamber.

2. A lead acid battery lead alloy furnace as claimed in claim 1 characterised in that: The filtration assembly includes a water pump (6), a spray pipe (7), and multiple wide-angle nozzles. The inflow end of the water pump (6) is connected to the bottom of the filtration chamber of the purification box (5). The spray pipe (7) is fixedly installed in the upper part of the filtration chamber of the purification box (5). Each of the wide-angle nozzles is fixedly installed on the spray pipe (7), and the spray pipe (7) is connected to each wide-angle nozzle.

3. A lead acid battery lead alloy furnace as defined in claim 1, characterized in that: The filter assembly includes a filter plate (20) and a slide frame (19). The slide frame (19) is fixedly installed on the four periphery of the filter plate (20). The slide frame (19) is slidably installed in the processing chamber of the purification box (5) and the slide frame (19) penetrates one side wall of the purification box (5).

4. A lead acid battery lead alloy furnace as defined in claim 1, characterized in that: The purification box (5) is fixedly installed with a first drain pipe and a second drain pipe. One end of the first drain pipe is connected to the filtration chamber of the purification box (5), and a first control valve is installed on the first drain pipe. One end of the second drain pipe is connected to the processing chamber of the purification box (5), and a second control valve is installed on the second drain pipe.

5. A lead acid battery lead alloy furnace as claimed in claim 3 wherein: A sliding frame (16) is longitudinally slidably installed in the filtration chamber of the purification box (5), and the four periphery of the sliding frame (16) abuts against the inner side wall of the filtration chamber of the purification box (5).

6. A lead acid battery lead alloy furnace as claimed in claim 5 wherein: A motor (9) is fixedly installed on the outer wall of the purification box (5). The motor (9) is connected to the sliding frame (16) and the sliding plate frame (19) respectively. The motor (9) drives the sliding frame (16) to slide longitudinally and the sliding plate frame (19) to slide laterally.

7. A lead acid battery lead alloy furnace as claimed in claim 5 wherein: Multiple floats (21) are fixedly installed on the sliding frame (16). Each float (21) drives the sliding frame (16) to rise or fall under the action of buoyancy.

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