High current efficiency magnesium alloy sacrificial anode
By installing activated carbon filters and a first filter in the exhaust gas filter box of the magnesium alloy sacrificial anode, and utilizing alkaline spraying neutralization reaction, the problem of direct emission of untreated exhaust gas was solved, achieving purification and safe emission of exhaust gas.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIAOZUO HUAYU MAGNESIUM CO LTD
- Filing Date
- 2025-09-04
- Publication Date
- 2026-07-31
AI Technical Summary
In the current production process of magnesium alloy sacrificial anodes, waste gas is emitted directly without treatment, leading to air pollution and health hazards.
An activated carbon filter and a first filter are installed in the exhaust gas filter box of the magnesium alloy sacrificial anode. The filter is detachable through a sliding design. Combined with a water pump and nozzles, alkaline solution is sprayed into the exhaust gas to neutralize the acidic pollutants and purify the exhaust gas through multi-layer filtration.
It effectively removes odors, volatile organic compounds and acidic pollutants from exhaust gases, reducing environmental pollution and health hazards, and achieving exhaust gas purification.
Smart Images

Figure CN224580754U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of magnesium alloy sacrificial anode technology, specifically a high current efficiency magnesium alloy sacrificial anode. Background Technology
[0002] Magnesium alloy sacrificial anodes are electrode materials used in cathodic protection engineering. They exhibit strong resistance to seawater corrosion, high current efficiency, and can provide long-term protection for subsea pipelines from salt spray and marine organism adhesion. The refining furnace is a crucial component of the magnesium alloy sacrificial anode production process, used to refine the molten magnesium alloy.
[0003] Chinese utility model patent CN215413232U discloses a refining furnace for producing magnesium alloy sacrificial anodes. The furnace includes a furnace body with a first chamber and a second chamber. A crucible is located in the first chamber. An electric heating layer and an insulation layer are located between the crucible and the first chamber. A geared motor is mounted on the top of the crucible. A rotating shaft and a temperature sensor are located inside the crucible. The top of the rotating shaft is connected to the output shaft of the geared motor. A stirring slant and a stirring crossbar are mounted on the rotating shaft. A scraper is fixedly installed at the end of the stirring slant, and a cylindrical connector with stirring claws is fixedly connected to the end of the stirring crossbar. A cooling chamber is located in the second chamber. A water storage chamber is located between the cooling chamber and the second chamber. A cooler is located outside the water storage chamber and is connected to the water storage chamber via a circulation pipeline. The crucible and the cooling chamber are connected by a connecting pipe. This device has the advantages of precise temperature control, high production efficiency, and pure product.
[0004] To expel waste gas from the furnace's cooling chamber, the aforementioned refining furnace has an exhaust port installed at the top of the chamber. However, this refining furnace lacks the function of filtering the exhaust gas. If harmful substances in the exhaust gas are directly released into the atmosphere, it will not only cause air pollution but may also endanger human health. Utility Model Content
[0005] This invention provides a high current-efficiency magnesium alloy sacrificial anode to solve the problems in the prior art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a high current efficiency magnesium alloy sacrificial anode, comprising a furnace body and an exhaust gas filter box, wherein an exhaust port is fixedly provided on one side of the top of the furnace body, and an exhaust gas filter box is fixedly provided at one end of the exhaust port; a first concave frame is fixedly provided on both sides of the inner wall of the exhaust gas filter box, and an activated carbon filter screen is slidably connected between the two first concave frames; a second concave frame is fixedly provided on both sides of the inner wall of the exhaust gas filter box, and a first filter screen is slidably connected between the two second concave frames. A water pump is fixedly installed on one side of the exhaust gas filter box. A first delivery pipe is fixedly installed on the top of the water pump, and a second delivery pipe is fixedly installed on the bottom of the water pump. One end of the first delivery pipe passes through one side of the exhaust gas filter box and extends into the interior of the exhaust gas filter box. A nozzle is fixedly installed at the bottom of the first delivery pipe.
[0007] Furthermore, a negative pressure fan is installed on the top of the exhaust gas filter box.
[0008] Furthermore, a discharge pipe is fixedly installed on one side of the exhaust gas filter box, and a control valve is installed on the surface of the discharge pipe.
[0009] Furthermore, the exhaust gas filter box has an access door connected to its front hinge.
[0010] Furthermore, a collection hopper is fixedly installed inside the exhaust gas filter box, and a collection chamber is provided below the collection hopper.
[0011] Furthermore, a bolt is provided on one side of the inspection door.
[0012] Compared with the prior art, this utility model provides a high current efficiency magnesium alloy sacrificial anode, which has the following beneficial effects: 1. This high current efficiency magnesium alloy sacrificial anode, by setting an activated carbon filter and a first filter, can intercept larger particulate impurities carried in the exhaust gas, while the activated carbon filter has a strong adsorption capacity and can effectively adsorb odors and volatile organic compounds in the gas, thereby purifying the exhaust gas and reducing its pollution to the environment and harm to human health.
[0013] 2. This high-current-efficiency magnesium alloy sacrificial anode, through the setting of a second concave frame and a first concave frame, and by adopting a sliding design between the second concave frame and the first filter screen, and a sliding design between the first concave frame and the activated carbon filter screen, enables the activated carbon filter screen and the first filter screen to be detachable. After a period of use, the activated carbon filter screen can be removed and replaced, and the first filter screen can be removed and cleaned.
[0014] 3. This high-current-efficiency magnesium alloy sacrificial anode is equipped with a water pump, a first delivery pipe, a second delivery pipe, and a nozzle. The first delivery pipe is connected to an external alkaline solution storage device, and the water pump then delivers the alkaline solution to the nozzle. By spraying the alkaline solution into the exhaust gas, the acidic gases in the exhaust gas undergo a neutralization reaction with the alkaline solution, thereby effectively removing acidic pollutants from the exhaust gas and reducing the filtration burden on the activated carbon filter. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2This is a front view of the structure of this utility model; Figure 3 This is a schematic diagram of the exhaust gas filter box structure of this utility model.
[0016] In the diagram: 1. Furnace body; 2. Exhaust port; 3. Waste gas filter box; 301. Negative pressure fan; 4. First concave frame; 401. Activated carbon filter screen; 5. Second concave frame; 501. First filter screen; 6. Water pump; 601. First conveying pipe; 602. Second conveying pipe; 603. Nozzle; 7. Collection hopper; 701. Collection chamber; 8. Discharge pipe; 801. Control valve; 9. Inspection door. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Please see Figure 1-3 This utility model discloses a high current efficiency magnesium alloy sacrificial anode, including a furnace body 1 and an exhaust gas filter box 3. An exhaust port 2 is fixedly provided on one side of the top of the furnace body 1, and an exhaust gas filter box 3 is fixedly provided at one end of the exhaust port 2. A first concave frame 4 is fixedly provided on both sides of the inner wall of the exhaust gas filter box 3. An activated carbon filter screen 401 is slidably connected between the two first concave frames 4. The activated carbon filter screen 401 is a prior art. The activated carbon filter screen is an air purification material with polyurethane foam as the carrier structure and powdered activated carbon loaded on it, and the carbon content is between 35% and 50%. It employs highly efficient catalytic activated carbon supported in a porous structure, featuring a large specific surface area, high adsorption efficiency, low wind resistance coefficient, and low energy consumption. It can remove volatile organic compounds such as formaldehyde, toluene, and hydrogen sulfide, as well as trace heavy metals. The inner walls of the exhaust gas filter box 3 are fixedly equipped with second concave frames 5 on both sides, and a first filter screen 501 is slidably connected between the two second concave frames 5. The filter screen is a prior art technology, primarily used to intercept impurities to improve material processing or environmental purification effects, and is a core component of industrial filtration devices. Based on material, it can be divided into textile fiber filter screens and metal filter screens. Filter screens are mainly made of stainless steel, nylon, etc., and the filtration precision is defined by mesh size (commonly 20-325 mesh). It possesses characteristics such as high temperature resistance, moisture resistance, and reusability. A water pump 6 is fixedly installed on one side of the exhaust gas filter box 3. The water pump 6 is existing technology. A water pump is a machine that transports or pressurizes liquids. It transfers the mechanical energy of the prime mover or other external energy to the liquid, increasing the liquid's energy. It is mainly used to transport liquids including water, oil, acid and alkali solutions, emulsions, suspensions, and liquid metals. A first delivery pipe 601 is fixedly installed on the top of the water pump 6, and a second delivery pipe 602 is fixedly installed on the bottom of the water pump 6. One end of the first delivery pipe 601 passes through one side of the exhaust gas filter box 3 and extends into the interior of the exhaust gas filter box 3. A nozzle 603 is fixedly installed at the bottom of the first delivery pipe 601.
[0019] Specifically, a negative pressure fan 301 is installed on the top of the exhaust gas filter box 3.
[0020] In this embodiment, by setting up a negative pressure fan 301, a negative pressure environment will be formed inside the exhaust gas filter box 3 when the negative pressure fan 301 is working, so that the exhaust gas can enter the exhaust gas filter box 3 more quickly and smoothly.
[0021] Specifically, a discharge pipe 8 is fixedly installed on one side of the exhaust gas filter box 3, and a control valve 801 is installed on the surface of the discharge pipe 8.
[0022] In this embodiment, by setting up a discharge pipe 8 and opening the control valve 801 set on the discharge pipe 8, the alkaline solution inside the waste gas filter box 3 after neutralization reaction can be smoothly discharged.
[0023] Specifically, the exhaust gas filter box 3 has an inspection door 9 connected to its front hinge.
[0024] In this embodiment, by setting up an inspection door 9, the interior of the exhaust gas filter box 3 can be inspected and maintained after opening the inspection door 9.
[0025] Specifically, a collection hopper 7 is fixedly installed inside the exhaust gas filter box 3, and a collection chamber 701 is provided below the collection hopper 7.
[0026] In this embodiment, by setting up a collection chamber 701, the alkaline solution after the neutralization reaction will flow smoothly into the collection chamber 701 with the help of the guiding effect of the collection bucket 7.
[0027] Specifically, a bolt is provided on one side of the inspection door 9.
[0028] In this implementation scheme, the maintenance door 9 can be locked by setting a bolt to prevent it from being opened accidentally.
[0029] In practice, the working principle of the refining furnace used in the production of magnesium alloy sacrificial anodes, disclosed in Chinese Utility Model Patent CN215413232U, has been explained, so this application will not repeat it.
[0030] The exhaust port 2 on the furnace body 1 is used to discharge the waste gas in the cooling chamber of the furnace body 1. The discharged waste gas will enter the waste gas filter box 3. The first conveying pipe 601 is connected to the external alkaline solution storage equipment, and then the alkaline solution is transported to the spray nozzle 603 by the water pump 6. By spraying alkaline solution into the waste gas, the acidic gas in the waste gas is neutralized with the alkaline solution, thereby effectively removing acidic pollutants in the waste gas.
[0031] After neutralization, the exhaust gas passes through a series of filters, including a first filter 501 and an activated carbon filter 401. The first filter 501 intercepts larger particulate impurities in the exhaust gas, while the activated carbon filter 401 has a strong adsorption capacity and can effectively adsorb odors and volatile organic compounds in the gas.
[0032] In summary, this high-current-efficiency magnesium alloy sacrificial anode, by incorporating an activated carbon filter 401 and a first filter 501, effectively purifies the exhaust gas by intercepting larger particulate impurities carried in the exhaust gas. The activated carbon filter 401, with its strong adsorption capacity, effectively adsorbs odors and volatile organic compounds, reducing environmental pollution and harm to human health. The inclusion of a second concave frame 5 and a first concave frame 4, along with sliding designs for both the second and first concave frames, allows for the detachment of both filters. After a period of use, the activated carbon filter 401 can be removed for replacement, and the first filter 501 can be removed for cleaning. By setting up a water pump 6, a first delivery pipe 601, a second delivery pipe 602, and a nozzle 603, the first delivery pipe 601 is connected to an external alkaline solution storage device, and then the water pump 6 delivers the alkaline solution to the nozzle 603. By spraying the alkaline solution into the exhaust gas, the acidic gases in the exhaust gas are neutralized with the alkaline solution, thereby effectively removing acidic pollutants from the exhaust gas and reducing the filtration burden on the activated carbon filter 401.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A high current efficiency magnesium alloy sacrificial anode comprising a furnace body (1) and a fume filter box (3), characterized in that: An exhaust port (2) is fixedly provided on one side of the top of the furnace body (1). An exhaust gas filter box (3) is fixedly provided at one end of the exhaust port (2). A first concave frame (4) is fixedly provided on both sides of the inner wall of the exhaust gas filter box (3). An activated carbon filter screen (401) is slidably connected between the two first concave frames (4). A second concave frame (5) is fixedly provided on both sides of the inner wall of the exhaust gas filter box (3). A first filter screen (501) is slidably connected between the two second concave frames (5). A water pump (6) is fixedly installed on one side of the exhaust gas filter box (3). A first delivery pipe (601) is fixedly installed on the top of the water pump (6). A second delivery pipe (602) is fixedly installed on the bottom of the water pump (6). One end of the first delivery pipe (601) passes through one side of the exhaust gas filter box (3) and extends into the interior of the exhaust gas filter box (3). A nozzle (603) is fixedly installed at the bottom of the first delivery pipe (601).
2. The high current efficiency magnesium alloy sacrificial anode according to claim 1, characterized in that: The top of the exhaust gas filter box (3) is equipped with a negative pressure fan (301).
3. The high current efficiency magnesium alloy sacrificial anode according to claim 1, characterized in that: A discharge pipe (8) is fixedly installed on one side of the exhaust gas filter box (3), and a control valve (801) is installed on the surface of the discharge pipe (8).
4. The high current efficiency magnesium alloy sacrificial anode according to claim 1, characterized in that: The exhaust gas filter box (3) has an inspection door (9) connected to the front hinge.
5. The high current efficiency magnesium alloy sacrificial anode according to claim 1, characterized in that: The exhaust gas filter box (3) is fixedly provided with a collection hopper (7), and a collection chamber (701) is provided below the collection hopper (7).
6. The high current efficiency magnesium alloy sacrificial anode according to claim 4, characterized in that: A bolt is provided on one side of the inspection door (9).