A metal recovery device

Abstract

The metal recycling device provided in this application includes a waste box, an ultrasonic cleaning tank, a sludge tank, a sludge pump, a distillation reactor, a clean liquid tank, a clean liquid pump, and a control unit. The waste box is equipped with a screen to serve as a support surface for mold cleaning, allowing metal debris to fall into the waste box through the screen when the mold is cleaned with a brush. The outlet at the bottom of the ultrasonic cleaning tank is connected to the sludge tank. The ultrasonic cleaning tank heats an alcohol-based cleaning solvent to a specified temperature and uses it to ultrasonically clean the mold, allowing the sludge to be introduced into the sludge tank through the outlet. The sludge pump pumps the sludge into the distillation reactor. The distillation reactor heats the sludge to its boiling point, causing the alcohol-based cleaning solvent to evaporate into vapor, which is then discharged through the vapor outlet to a condenser, recovering metal residue. The condenser liquefies the vapor and returns it to the clean liquid tank. The clean liquid pump pumps the alcohol-based cleaning solvent from the clean liquid tank into the ultrasonic cleaning tank. The control unit controls the linkage operating parameters of each component.

Description

Technical Field

[0001] This application relates to the field of industrial cleaning and environmental protection technology, and in particular to a metal recycling device. Background Technology

[0002] In the field of industrial cleaning and environmental protection technology, traditional ultrasonic cleaning methods have long been widely used, especially when cleaning parts containing precious metal debris. Ultrasonic cleaning can effectively remove contaminants and debris attached to the surface of parts by generating microbubbles through high-frequency vibration.

[0003] However, traditional ultrasonic cleaning methods have several significant drawbacks, especially when cleaning parts containing precious metals. First, most cleaning agents can only be used once during the cleaning process, resulting in huge consumption and high cleaning costs. Furthermore, during cleaning, metal debris usually dissolves or floats in suspension in the waste liquid, which is often directly discharged after cleaning. Because the waste liquid contains a large amount of metal debris, this not only wastes resources but may also cause environmental pollution problems. Utility Model Content

[0004] In view of this, this application provides a metal recycling device to solve the problems of resource waste and the inability to recycle metal scraps.

[0005] Specifically, this application is implemented through the following technical solution:

[0006] The first aspect of this application provides a metal recycling device, which includes a waste box, an ultrasonic cleaning tank, a sludge tank, a sludge pump, a distillation reactor, a clean liquid tank, a clean liquid pump, and a control unit;

[0007] The waste box is equipped with a screen; the screen serves as a support surface for mold cleaning, so that when the mold is initially cleaned with a brush, the metal debris cleaned out falls into the waste box through the screen.

[0008] The outlet at the bottom of the ultrasonic cleaning tank is connected to the waste liquid tank; the ultrasonic cleaning tank is equipped with an ultrasonic generator and a temperature control unit, which is used to heat the alcohol cleaning solvent to a specified temperature and use the heated alcohol cleaning solvent to perform ultrasonic cleaning on the mold after preliminary cleaning, so as to introduce the waste liquid containing metal fragments into the waste liquid tank through the outlet.

[0009] The sludge tank is connected to the distillation reactor via the sludge pump; the sludge pump is used to pump the sludge in the sludge tank into the distillation reactor.

[0010] The steam outlet of the distillation reactor is connected to the clean liquid tank via a condenser; the distillation reactor is used to heat the waste liquid to above the boiling point of the alcohol cleaning solvent, so that the alcohol cleaning solvent in the contamination evaporates into steam and is discharged through the steam outlet to the condenser, and the metal residue remaining after distillation is recovered; the condenser is used to liquefy the steam and recover it into the clean liquid tank.

[0011] The purified liquid tank is connected to the ultrasonic cleaning tank via the purified liquid pump; the purified liquid pump is used to pump the recovered alcohol cleaning solvent into the ultrasonic cleaning tank.

[0012] The control unit is electrically connected to the ultrasonic generator, the temperature control unit, the sewage pump, and the clean liquid pump, respectively, and is used to control the linkage operation parameters of each component.

[0013] The metal recycling device provided in this application first places the mold on a screen and uses a brush for preliminary cleaning. The removed metal fragments are collected in a waste box, which allows for the initial recovery of metal fragments, avoiding waste of metal resources and improving recycling efficiency. Furthermore, an ultrasonic cleaning tank, using an ultrasonic generator and temperature control unit, performs a more thorough cleaning of the mold. It utilizes heated alcohol-based cleaning solvents under ultrasonic waves to more efficiently remove metal fragments, resulting in a wastewater containing metal fragments. This wastewater enters a wastewater tank and is pumped into a distillation reactor for heating. This allows the volatilized alcohol-based cleaning solvent and metal residue to separate, enabling further collection of metal fragments. The volatilized alcohol-based cleaning solvent is then condensed and returned to a clean liquid tank, achieving the recycling of the alcohol-based cleaning solvent and effectively reducing its consumption and environmental pollution. The control unit connects the various components electrically to precisely control the operating parameters of the ultrasonic generator, temperature control unit, waste liquid pump, and clean liquid pump, ensuring that the entire metal recycling process can achieve efficient, stable, and automated operation, achieving the purpose of mold cleaning and metal recycling, and the alcohol cleaning solvent can be recycled. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of Embodiment 1 of the metal recycling device provided in this application;

[0015] Figure 2 This is a schematic diagram of Embodiment 2 of the metal recycling device provided in this application. Detailed Implementation

[0016] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application.

[0017] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used herein are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0018] It should be understood that although the terms first, second, third, etc., may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0019] The following specific embodiments are given to illustrate the technical solution of this application in detail.

[0020] Figure 1 This is a schematic diagram of Embodiment 1 of the metal recycling device provided in this application. Please refer to... Figure 1 The metal recycling device provided in this embodiment includes a waste box, an ultrasonic cleaning tank, a sludge tank, a sludge pump, a distillation reactor, a clean liquid tank, a clean liquid pump, and a control unit.

[0021] The waste box is equipped with a screen; the screen serves as a support surface for mold cleaning, so that when the mold is initially cleaned with a brush, the metal debris cleaned out falls into the waste box through the screen.

[0022] The outlet at the bottom of the ultrasonic cleaning tank is connected to the waste liquid tank; the ultrasonic cleaning tank is equipped with an ultrasonic generator and a temperature control unit, which is used to heat the alcohol cleaning solvent to a specified temperature and use the heated alcohol cleaning solvent to perform ultrasonic cleaning on the mold after preliminary cleaning, so as to introduce the waste liquid containing metal fragments into the waste liquid tank through the outlet.

[0023] The sludge tank is connected to the distillation reactor via the sludge pump; the sludge pump is used to pump the sludge in the sludge tank into the distillation reactor.

[0024] The steam outlet of the distillation reactor is connected to the clean liquid tank via a condenser; the distillation reactor is used to heat the waste liquid to above the boiling point of the alcohol cleaning solvent, so that the alcohol cleaning solvent in the contamination evaporates into steam and is discharged through the steam outlet to the condenser, and the metal residue remaining after distillation is recovered; the condenser is used to liquefy the steam and recover it into the clean liquid tank.

[0025] The purified liquid tank is connected to the ultrasonic cleaning tank via the purified liquid pump; the purified liquid pump is used to pump the recovered alcohol cleaning solvent into the ultrasonic cleaning tank.

[0026] The control unit is electrically connected to the ultrasonic generator, the temperature control unit, the sewage pump, and the clean liquid pump, respectively, and is used to control the linkage operation parameters of each component.

[0027] Specifically, the metal recycling device operates on the following principle: First, the mold contaminated with metal scraps is manually moved onto the screen of the waste bin. A brush is used to clean the mold, and the removed metal scraps fall through the screen gaps into the waste bin below, thus initially collecting some of the metal scraps. Next, the pre-cleaned mold is manually placed into an ultrasonic cleaning tank. An alcohol-based cleaning solvent is injected into the ultrasonic cleaning tank, and the ultrasonic generator is activated. The temperature control unit heats the alcohol-based cleaning solvent to a specified temperature, and the heated solvent is used to ultrasonically clean the pre-cleaned mold. After cleaning, the wastewater containing metal scraps is discharged through the outlet into a wastewater tank, transferring the wastewater from the ultrasonic cleaning tank to the wastewater tank. Then, a wastewater pump is activated, pumping the wastewater containing metal scraps from the wastewater tank into a distillation reactor. Inside the distillation reactor, the wastewater is heated to a temperature exceeding the boiling point of the alcohol-based cleaning solvent. The solvent evaporates into vapor, which is then discharged through the vapor outlet to the condenser. Metal residues, due to their high boiling point, remain in the distillation reactor. The metal residues are then separated from the alcohol-based cleaning solvent, and metal fragments are further collected. Additionally, the steam generated during distillation enters a condenser, liquefies, and flows into a purified liquid tank, completing the recovery of the alcohol-based cleaning solvent. The purified liquid pump then pumps the recovered alcohol-based cleaning solvent from the purified liquid tank back to the ultrasonic cleaning tank, achieving the recycling of the alcohol-based cleaning solvent.

[0028] Specifically, the waste bin is used to collect metal scraps generated during the metal recycling process, and its overall shape is an open cuboid or trapezoidal structure. The waste bin is equipped with a screen made of iron and has a perforated structure. In practice, for example, the inner side of the waste bin near the open end has a raised ring, and the screen is placed on this raised ring.

[0029] The screen is used as a support surface for mold cleaning. In practice, the mold is placed on the screen and brushed with a brush to clean the mold initially. During the initial cleaning process, due to the perforated structure of the screen, the cleaned metal debris falls into the waste box.

[0030] It is understood that the waste box can be made of wear-resistant, corrosion-resistant and strong metal materials (such as 304 stainless steel), or high-strength engineering plastic materials (such as PP or PE materials). In this embodiment, no limitation is made.

[0031] Preferably, in one possible implementation, the waste container is made of plastic with a corrosion-resistant coating on its inner wall. This coating can be a polytetrafluoroethylene (PTFE) coating or a ceramic coating. By providing a corrosion-resistant coating, the durability and safety of the waste container are effectively improved. Specifically, firstly, the coating prevents chemicals from corroding the container material, extending its service life; secondly, the coating has excellent resistance to chemical reactions, preventing adverse reactions between the waste and the container, ensuring the stability of the waste during storage. Furthermore, the smooth surface of the coating makes it less prone to dirt adhesion, making cleaning and maintenance of the waste container easier and reducing the difficulty of cleaning work.

[0032] It should be noted that the mold can be any type of mold, and this embodiment is not limited to it. Optionally, in a preferred implementation, the mold is an indium sheet, and the metal recycling device provided in this embodiment is used to recycle indium.

[0033] Specifically, the ultrasonic cleaning tank is the core component of the metal recycling device, responsible for further cleaning of the molds, and is used to perform ultrasonic cleaning on the molds after the initial cleaning. The waste liquid tank is a storage device used to temporarily store and transfer waste liquid containing metal debris, playing a role in centralized collection and pretreatment buffering of waste liquid. The inner walls of both the ultrasonic cleaning tank and the waste liquid tank are also equipped with corrosion-resistant coatings, which are polytetrafluoroethylene coatings or ceramic coatings.

[0034] Specifically, the ultrasonic cleaning tank is equipped with an ultrasonic generator and a temperature control unit. The ultrasonic generator is an electronic device that converts electrical energy into high-frequency mechanical vibration energy. Through specialized circuit design, it generates a high-frequency electrical signal and transmits this signal to a transducer at the bottom or side wall of the ultrasonic cleaning tank. Upon receiving the signal, the transducer emits high-frequency vibrations, which are then transmitted to the alcohol-based cleaning solvent within the tank. This causes numerous microbubbles to form within the solvent. These microbubbles continuously generate instantaneous high-pressure impacts during vibration, effectively removing any metal debris remaining after the initial cleaning.

[0035] Furthermore, the temperature control unit is used to precisely heat the alcohol-based cleaning solvent in the ultrasonic cleaning tank to a specified temperature. For example, when the alcohol-based cleaning solvent is isopropanol, the specified temperature is 40℃-60℃. The temperature control unit can then heat it to the corresponding temperature. In practice, the temperature control unit can use a heater to heat the alcohol-based cleaning solvent, ensuring that the temperature reaches the specified cleaning effect.

[0036] Understandably, the cleaning effect of alcohol-based cleaning solvents is closely related to temperature. Appropriately increasing the temperature can reduce the viscosity of alcohol-based cleaning solvents, enhance their fluidity, and make them easier to penetrate into the fine structure of the mold surface. At the same time, increasing the temperature can increase the molecular motion rate, enhance the effect of ultrasonic cleaning, and improve cleaning efficiency.

[0037] Optionally, in one possible implementation, the ultrasonic cleaning tank includes a cleaning basket for placing the mold, with perforated structures on its bottom and side walls. Specifically, the cleaning basket holds the mold and prevents it from directly contacting the bottom of the ultrasonic cleaning tank, while ensuring that metal debris flows freely with the alcohol-based cleaning solvent. The perforated structure ensures that the alcohol-based cleaning solvent can penetrate the cleaning basket without obstruction and act on the mold surface, allowing the metal debris on the mold surface to be thoroughly cleaned, avoiding the problem of insufficient cleaning caused by the mold directly contacting the bottom of the ultrasonic cleaning tank.

[0038] Furthermore, by coating the inner wall of the ultrasonic cleaning tank with a corrosion-resistant coating such as polytetrafluoroethylene or ceramic, it is possible to resist long-term erosion by solvents.

[0039] Optionally, in one possible implementation, the top of the ultrasonic cleaning tank is provided with an openable and closable sealing cover with an observation window. This reduces the evaporation of alcohol-based cleaning solvents and facilitates observation of the cleaning status. In this way, the operator can monitor the ultrasonic cleaning process in real time, which is convenient for management.

[0040] It is understood that the waste tank can be a sealed cuboid structure or a bottle-shaped structure, and this embodiment does not limit it.

[0041] Furthermore, the sludge tank is connected to the distillation reactor via a sludge pump. The sludge pump, as the power unit in the metal recovery device, is used to stably and efficiently pump the sludge containing metal fragments temporarily stored in the sludge tank into the distillation reactor. The distillation reactor is the device in the metal recovery device that achieves separation and purification. It separates the alcohol-based cleaning solvent from the metal residue through the principle of heating distillation, and is a key step in recovering metal residue and regenerating the solvent.

[0042] In practice, distillation reactors are typically supported by fixed brackets or floor-mounted supports to ensure stability during high-temperature heating and material flow, reducing steam leakage or temperature fluctuations caused by shaking.

[0043] In one possible implementation, a conical slag hopper is provided at the bottom of the distillation reactor, and a slag discharge valve is provided at the bottom outlet of the conical slag hopper. The inner wall of the conical slag hopper is coated with a non-stick coating for collecting and conveniently discharging the metal residue remaining after distillation.

[0044] Specifically, the slag discharge valve is used to control the discharge of metal residues and can be supported by flange connection or fixed by welding. During specific implementation, it is necessary to match the support structure of the slag discharge valve with the load-bearing capacity of the conical slag collection hopper to ensure the smoothness of the slag discharge channel. In addition, through morphological optimization, the conical structure of the conical slag collection hopper can achieve high efficiency, convenience and low residue rate, reducing the recovery omission caused by residue dispersion.

[0045] It can be understood that through the distillation reactor, resource regeneration can be promoted, enabling efficient recovery of metal residues and recycling of alcohol cleaning solvents, ensuring the environmental protection and economy of the metal recovery device.

[0046] Specifically, the steam outlet of the distillation reactor is connected to the net liquid tank through a condenser tube. The condenser tube is a component in the metal recovery device that liquefies steam. It liquefies the steam generated by the distillation reactor into recycled alcohol cleaning solvent through the principle of heat exchange. The net liquid tank is a component in the metal recovery device for storing the recycled alcohol cleaning solvent. One end of it is connected to the condenser tube, and the other end is connected to the ultrasonic cleaning tank, for supplying the recycled alcohol cleaning solvent to the net liquid tank.

[0047] Optionally, in a possible implementation manner, the condenser tube is a serpentine condenser tube or a double-pipe condenser tube, and a cooling water jacket is provided outside the condenser tube. The condenser tube adopts a serpentine or double-pipe structure and uses a cooling water jacket, which can improve the space utilization rate of the condenser tube, fully recover the alcohol cleaning solvent, and ensure safe and stable operation.

[0048] Optionally, in a possible implementation manner, the inner wall of the net liquid tank is also provided with a corrosion-resistant coating, and the corrosion-resistant coating is a polytetrafluoroethylene coating or a ceramic coating.

[0049] Optionally, in a possible implementation manner, a liquid level detection unit is provided on the net liquid tank, and the liquid level detection unit is used to detect the liquid level of the net liquid tank.

[0050] Specifically, the liquid level detection unit is used to monitor the height of the alcohol cleaning solvent liquid level in the net liquid tank in real time, and realizes dynamic control of the stock of the alcohol cleaning solvent by accurately sensing the liquid level change, providing support for the automatic operation of the metal recovery device and the recycling of the alcohol cleaning solvent. According to the different precision requirements of the metal recovery device, different types of liquid monitoring units can be adopted. For example, a float-type liquid level detection unit, an ultrasonic liquid level detection unit or a capacitive liquid level detection unit. Further, the control unit can perform linkage control on the net liquid pump according to the liquid level. For example, when the liquid level is low, increase the power of the hydraulic pump, and when the liquid level is high, reduce the power of the hydraulic pump.

[0051] Specifically, the control unit is electrically connected to the ultrasonic generator, temperature control unit, wastewater pump, and clean water pump, respectively, to control the coordinated operating parameters of each component. These coordinated operating parameters refer to the operating parameters used by the control unit to collaboratively regulate each core component (such as the ultrasonic generator, temperature control unit, wastewater pump, and clean water pump) through electrical connections, ensuring that each stage of the metal recycling device operates efficiently according to preset logic. For example, in practical implementation, the control unit first controls the temperature control unit in the ultrasonic cleaning tank to heat the alcohol cleaning solvent to a specified temperature. Further, when the specified temperature is reached (for example, a temperature sensor is installed in the ultrasonic cleaning tank to provide real-time temperature feedback), the control unit further controls the ultrasonic generator to start working. After the ultrasonic generator has been working for a specified period, the control unit stops the ultrasonic generator and temperature control unit, and opens the outlet to introduce wastewater into the wastewater tank. Simultaneously, the control unit starts the wastewater pump to pump the wastewater into the distillation reaction pump. Further, at this point, the control unit starts the distillation reaction vessel, and when there is liquid in the clean water tank, or when the liquid level in the ultrasonic cleaning tank is detected to be low, the control unit starts the clean water pump.

[0052] Referring to the preceding description, the metal recycling device provided in this embodiment has at least the following beneficial effects:

[0053] (1) High-efficiency metal recovery

[0054] The screen inside the waste bin can effectively collect the metal scrap generated during the initial cleaning process, preventing the metal scrap from accumulating in other parts, thus ensuring the efficiency and purity of metal recycling.

[0055] Furthermore, ultrasonic cleaning technology can efficiently remove metal residues from the mold surface, and by combining it with a distillation reactor, the metal in the wastewater can be further recovered.

[0056] (2) Efficient utilization and recovery of solvents

[0057] The wastewater is heated in a distillation reactor to above the boiling point of the alcohol-based cleaning solvent, causing it to evaporate into vapor. The vapor is then cooled and recovered via a condenser. The recovered solvent is then pumped back into the ultrasonic cleaning tank for reuse. This process effectively recovers the cleaning solvent, reduces waste, lowers operating costs, and meets environmental protection requirements.

[0058] (3) Automated control and intelligent management

[0059] The key components (ultrasonic generator, temperature control unit, waste liquid pump, and clean liquid pump) are automatically linked through a control unit. The control unit can precisely adjust the operating parameters of each component, ensuring that the device maintains optimal performance under different operating conditions.

[0060] (4) Environmental friendliness

[0061] By recycling alcohol-based cleaning solvents and metal scraps, not only is the generation of chemical waste reduced, but environmental pollution is also decreased, which aligns with the concept of green environmental protection.

[0062] (5) High applicability and convenient maintenance

[0063] Each component (such as the sludge tank, distillation reactor, ultrasonic cleaning tank, etc.) is designed separately, which facilitates later maintenance and replacement, and improves the service life and maintenance efficiency of the equipment.

[0064] The metal recycling device provided in this application first places the mold on a screen and uses a brush for preliminary cleaning. The removed metal fragments are collected in a waste box, which allows for the initial recovery of metal fragments, avoiding waste of metal resources and improving recycling efficiency. Furthermore, an ultrasonic cleaning tank, using an ultrasonic generator and temperature control unit, performs a more thorough cleaning of the mold. It utilizes heated alcohol-based cleaning solvents under ultrasonic waves to more efficiently remove metal fragments, resulting in a wastewater containing metal fragments. This wastewater enters a wastewater tank and is pumped into a distillation reactor for heating. This allows the volatilized alcohol-based cleaning solvent and metal residue to separate, enabling further collection of metal fragments. The volatilized alcohol-based cleaning solvent is then condensed and returned to a clean liquid tank, achieving the recycling of the alcohol-based cleaning solvent and effectively reducing its consumption and environmental pollution. The control unit connects the various components electrically to precisely control the operating parameters of the ultrasonic generator, temperature control unit, waste liquid pump, and clean liquid pump, ensuring that the entire metal recycling process can achieve efficient, stable, and automated operation, achieving the purpose of mold cleaning and metal recycling, and the alcohol cleaning solvent can be recycled.

[0065] Figure 2 This is a schematic diagram of Embodiment 2 of the metal recycling device provided in this application. Please refer to... Figure 2 Based on the above embodiments, a first filter assembly is provided between the sewage tank and the sewage pump. The first filter assembly includes a detachable metal filter screen for intercepting impurities in the sewage.

[0066] Filters typically employ a mesh structure to increase surface area and improve filtration efficiency. Furthermore, filters may be designed in circular, rectangular, or other shapes to suit the space and flow requirements of the equipment. Additionally, filter materials are usually chosen from corrosion-resistant and high-temperature-resistant metals, such as stainless steel or alloys. These materials can withstand the chemical properties of alcohol-based cleaning solvents and are highly durable and resistant to corrosion by impurities.

[0067] Furthermore, depending on the size of the impurities in the wastewater, the pore size of the metal filter screen is typically designed between 0.5mm and 5mm. A pore size that is too small may cause clogging, while a pore size that is too large will not effectively intercept all impurities.

[0068] Understandably, through physical screening, metal filters can capture and accumulate solid particles, preventing them from clogging pipes or damaging pumps and other equipment.

[0069] Furthermore, the metal filter screen in the first filter assembly features a detachable design, allowing for easy installation between the wastewater tank and the wastewater pump. The interface between the filter screen and the first filter assembly typically uses a threaded, snap-fit, or quick-connect design, facilitating disassembly, cleaning, or replacement by operators.

[0070] The metal recycling device provided in this embodiment uses a first filter assembly between the wastewater tank and the wastewater pump. The metal filter screen of the first filter assembly intercepts impurities in the wastewater through physical filtration, protecting other components of the system from damage. Furthermore, the detachable design simplifies operation and maintenance, improving the efficiency and reliability of the metal recycling device.

[0071] Furthermore, a second filtration assembly is provided between the purified liquid tank and the purified liquid pump. The second filtration assembly includes an activated carbon filter element and a filter membrane, which is used to finely filter the recovered alcohol cleaning solvent.

[0072] Specifically, activated carbon filter elements can have granular, honeycomb, or columnar structures, while filter membranes are porous and separate particles from liquids through their microporous structure.

[0073] Specifically, the recovered alcohol-based cleaning solvent first enters an activated carbon filter, where larger organic matter, odors, and other contaminants are removed through physical and chemical adsorption. Further, after passing through the activated carbon filter, the solvent enters a membrane filter assembly. The membrane, based on its pore size, removes tiny particles, suspended solids, and microorganisms from the solvent, further refining the impurities. After two stages of filtration, the purified solvent enters a clean liquid tank and is then pumped back to the ultrasonic cleaning tank for reuse.

[0074] The metal recovery device provided in this embodiment provides a second filtration component between the clean liquid tank and the clean liquid pump. The second filtration component uses a combination of activated carbon filter and filter membrane to perform fine filtration on the recovered alcohol cleaning solvent, thereby removing tiny impurities and organic matter from the solvent and ensuring that the recovered solvent can be used again efficiently and safely in the ultrasonic cleaning tank.

[0075] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A metal recovery device, characterized by, The metal recycling device includes a waste box, an ultrasonic cleaning tank, a sludge tank, a sludge pump, a distillation reactor, a clean liquid tank, a clean liquid pump, and a control unit. The waste box is equipped with a screen; the screen serves as a support surface for mold cleaning, so that when the mold is initially cleaned with a brush, the metal debris cleaned out falls into the waste box through the screen. The outlet at the bottom of the ultrasonic cleaning tank is connected to the waste liquid tank; the ultrasonic cleaning tank is equipped with an ultrasonic generator and a temperature control unit, which is used to heat the alcohol cleaning solvent to a specified temperature and use the heated alcohol cleaning solvent to perform ultrasonic cleaning on the mold after preliminary cleaning, so as to introduce the waste liquid containing metal fragments into the waste liquid tank through the outlet. The sludge tank is connected to the distillation reactor via the sludge pump; the sludge pump is used to pump the sludge in the sludge tank into the distillation reactor. The steam outlet of the distillation reactor is connected to the clean liquid tank via a condenser; the distillation reactor is used to heat the waste liquid to above the boiling point of the alcohol cleaning solvent, so that the alcohol cleaning solvent in the contamination evaporates into steam and is discharged through the steam outlet to the condenser, and the metal residue remaining after distillation is recovered; the condenser is used to liquefy the steam and recover it into the clean liquid tank. The clean liquid tank is connected to the ultrasonic cleaning tank via the clean liquid pump; the clean liquid pump is used to pump the recovered alcohol cleaning solvent into the ultrasonic cleaning tank. The control unit is electrically connected to the ultrasonic generator, the temperature control unit, the sewage pump, and the clean liquid pump, respectively, and is used to control the linkage operation parameters of each component.

2. The metal recovery device of claim 1, wherein The ultrasonic cleaning tank is equipped with a cleaning basket for placing the mold, and the bottom and side walls of the cleaning basket have a hollow structure.

3. The metal recovery device of claim 1, wherein A first filter assembly is provided between the wastewater tank and the wastewater pump. The first filter assembly includes a removable metal filter screen for intercepting impurities in the wastewater.

4. The metal recovery device of claim 1, wherein The bottom of the distillation reactor is equipped with a conical slag collection hopper, and the bottom outlet of the conical slag collection hopper is equipped with a slag discharge valve. The inner wall of the conical slag collection hopper is coated with a non-stick coating for collecting and conveniently discharging the metal residue remaining after distillation.

5. The metal recovery device of claim 1, wherein The condenser tube is a serpentine condenser tube or a sleeve-type condenser tube, and a cooling water jacket is provided outside the condenser tube.

6. The metal recovery device of claim 1, wherein A second filtration assembly is provided between the purified liquid tank and the purified liquid pump. The second filtration assembly includes an activated carbon filter element and a filter membrane, which is used to finely filter the recovered alcohol cleaning solvent.

7. The metal recovery device of claim 1, wherein The clean liquid tank is equipped with a liquid level detection unit, which is used to detect the liquid level in the clean liquid tank; The control unit is also used to perform linkage control on the clean liquid pump according to the liquid level.

8. The metal recovery device of claim 1, wherein The top of the ultrasonic cleaning tank is equipped with an openable and closable sealing cover, and the sealing cover is equipped with an observation window.

9. The metal recovery device of claim 1, wherein The inner walls of the waste box, ultrasonic cleaning tank, sewage tank, and clean liquid tank are all provided with a corrosion-resistant coating; the corrosion-resistant coating is a polytetrafluoroethylene coating or a ceramic coating.

10. The metal recovery device of claim 1, wherein The mold is an indium sheet, and the metal recycling device is used to recycle indium.

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