Clean circulating water system for aluminum casting production

Abstract

The utility model discloses a clean circulating water system for aluminum casting production. The clean circulating water system comprises a circulating water purification unit, a heat energy recovery unit, a mold heating unit, a cooling unit and a control and monitoring system, through an efficient clean circulating water system, waste water generated in the production process is purified and reused, and meanwhile heat energy in the waste water is recycled through a heat pipe or a heat exchanger or other structures and used for heating a mold. According to the system, the utilization efficiency of water resources can be improved, waste heat in the production process can be effectively recycled and utilized, and the purposes of energy conservation and emission reduction are achieved. The system design comprises primary filtration, precise filtration, deep purification, heat energy recovery, heat energy storage, mold heating, temperature control, cooling treatment and remote monitoring and control, and automatic control and efficient management of the production process are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum smelting and casting production, in particular to a clean circulating water system for aluminum smelting and casting production. Background Art

[0002] In aluminum foundries, clean circulating water systems play a crucial role, particularly during the cooling of ingots. A clean circulating water system primarily refers to a system specifically designed to recycle cooling water that undergoes appropriate treatment and filtration to ensure its cleanliness meets specific process requirements. Specifically, a clean circulating water system typically includes the following key components: a water source and water treatment unit, a circulation pump, a cooler or heat exchanger, filtration and purification equipment, and a monitoring and control system. With such a complete clean circulating water system, aluminum foundries can effectively manage the water resources required for cooling ingots, improve production efficiency, reduce energy consumption, and minimize environmental impact.

[0003] Traditional circulating water systems typically lack effective heat recovery mechanisms. Heat generated during the production process is directly discharged, resulting in significant energy waste. This not only increases production costs but also has adverse environmental impacts. Traditional systems lack effective utilization of wastewater heat, resulting in low overall energy efficiency.

[0004] Traditional circulating water systems suffer from low cooling efficiency, primarily due to suboptimal design of the cooling device and cooling medium, resulting in a slow cooling rate. This not only prolongs the cooling time of the ingot but can also affect its quality and performance. Furthermore, the cooling water temperature is difficult to reduce quickly, which reduces the recycling efficiency of the circulating water. In light of these issues, research and improvements are being conducted to address these existing issues, providing a clean circulating water system for aluminum casting production. This technology aims to address these issues and improve their practical value. Utility Model Content

[0005] The utility model aims to solve the technical problems existing in the prior art or related technologies.

[0006] Therefore, the technical solution adopted by this utility model is: A clean circulating water system for aluminum smelting and casting production, including:

[0007] a. Circulating water purification unit, used to purify wastewater generated during the production process, including primary filtration, precision filtration and deep purification;

[0008] b. A heat recovery unit, including a heat pipe or heat exchanger and a heat storage device, for recovering and storing heat from the circulating water to supply the mold heating system;

[0009] c. Mold heating unit, including a heat exchange system and temperature control system, used to heat the mold using recovered heat energy and monitor and adjust the mold temperature in real time;

[0010] d. Cooling unit, including a cooling tower or heat exchanger and a cooling water circulation system, used to cool the circulating water after being heated by the mold;

[0011] e. Control and monitoring system, including PLC control system and remote monitoring platform, used to realize automatic control and remote monitoring of the entire system.

[0012] In a preferred embodiment, the present invention can be further configured as follows: the circulating water purification unit includes:

[0013] Primary filtration device, used to remove large particles of impurities in water;

[0014] Precision filtering device to further intercept tiny particles;

[0015] The deep purification device uses ion exchange and reverse osmosis technology to remove soluble salts, heavy metal ions and organic matter in the water.

[0016] In a preferred embodiment, the present invention can be further configured as follows: the heat recovery unit includes:

[0017] Heat pipes or heat exchangers are used to transfer heat energy from circulating water to a heat transfer medium;

[0018] Thermal energy storage device, used to store recovered thermal energy so that it can be supplied to the mold heating system when needed

[0019] In a preferred embodiment, the present invention can be further configured as follows: the mold heating unit includes:

[0020] Heat exchange system for heating the mold using recovered heat energy;

[0021] The temperature control system, including temperature sensors and automatic controllers, is used to detect and adjust the mold temperature, monitor the mold temperature in real time, and automatically adjust it according to production needs.

[0022] In a preferred embodiment, the present invention can be further configured as follows: the cooling unit includes:

[0023] Cooling tower or heat exchanger, used to cool the circulating water after being heated by the mold;

[0024] The cooling water circulation system is used to return the cooled water to the circulating water purification unit to achieve water recycling.

[0025] In a preferred embodiment, the present invention can be further configured as follows: the control and monitoring system includes:

[0026] PLC control system is used to realize the automation control of the whole system, including the purification of circulating water, recovery and utilization of heat energy, heating and cooling of molds, etc.

[0027] The remote monitoring platform, including a data acquisition module, a communication module and a cloud server, is used to realize remote monitoring and data analysis of the system. Through the Internet of Things technology, production data is transmitted to the cloud server in real time, allowing managers to grasp the system operation status at any time and conduct remote monitoring.

[0028] In a preferred example, the present invention can be further configured as follows: the deep purification device includes an ion exchanger and a reverse osmosis membrane device, which are used to remove ions and tiny particles in water respectively.

[0029] In a preferred example, the present invention can be further configured as follows: the heat energy storage device of the heat energy recovery unit includes a hot water storage tank or a heat storage oil tank.

[0030] The beneficial effects achieved by the utility model are:

[0031] 1. In the present invention, by integrating a heat recovery unit, the system can effectively recover the heat energy generated during the production process, store it and use it for mold heating, greatly improving energy utilization, reducing energy waste, lowering production costs, and achieving the goal of energy conservation and emission reduction. The integrated heat energy storage device can store the recovered heat energy and supply it to the mold heating system at any time as needed, thereby optimizing energy use and improving the efficiency of the production process.

[0032] 2. In the present invention, by optimizing the design and using high-efficiency heat pipes and heat exchangers for heat transfer, part of the heat energy is used for mold heating, which significantly improves the cooling efficiency, accelerates the cooling rate of the circulating water, shortens the ingot cooling time, and ensures the continuity of production and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the overall system structure of an embodiment of the present utility model. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features therein can be combined with each other unless there is any conflict.

[0035] It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention.

[0036] The following describes, in conjunction with the accompanying drawings, a clean circulating water system for aluminum smelting and casting production provided by some embodiments of the present invention.

[0037] Combine Figure 1 As shown, the aluminum smelting and casting production clean circulating water system provided by the utility model includes:

[0038] a. Circulating water purification unit, used to purify wastewater generated during the production process, including primary filtration, precision filtration and deep purification;

[0039] b. A heat recovery unit, including a heat pipe or heat exchanger and a heat storage device, for recovering and storing heat from the circulating water to supply the mold heating system;

[0040] c. Mold heating unit, including a heat exchange system and temperature control system, used to heat the mold using recovered heat energy and monitor and adjust the mold temperature in real time;

[0041] d. Cooling unit, including a cooling tower or heat exchanger and a cooling water circulation system, used to cool the circulating water after being heated by the mold;

[0042] e. Control and monitoring system, including PLC control system and remote monitoring platform, used to realize automatic control and remote monitoring of the entire system.

[0043] In this embodiment, the circulating water purification unit includes: a primary filtration device for removing large particle impurities in the water; a precision filtration device for further intercepting tiny particles; and a deep purification device that uses ion exchange and reverse osmosis technology to remove soluble salts, heavy metal ions and organic matter in the water.

[0044] Specifically, primary filtration devices are primarily used to remove large impurities from the water, such as suspended solids, silt, and plant debris. Water flows through multiple layers of filter media or screens, trapping larger particles on the surface of the media or screens. The clean water then enters the next stage of precision filtration, ensuring system efficiency and equipment life. Precision filtration devices further intercept smaller particles, ensuring further improved water quality. Water flows through fine filter elements or microporous membranes, trapping tiny particles. The purified water then enters the deep purification device, which removes fine silt, rust, and microorganisms. The deep purification device utilizes ion exchange and reverse osmosis technologies to remove dissolved salts, heavy metal ions, and organic matter from the water, ensuring high standards of water purification for the circulating water. Ion exchange resins exchange dissolved salts and heavy metal ions in the water, removing these impurities and achieving a high level of water purity. Deep filtration through reverse osmosis membranes removes organic matter, bacteria, viruses, and dissolved salts, ensuring pure water quality.

[0045] In this embodiment, the heat recovery unit includes: a heat pipe or heat exchanger for transferring heat energy from circulating water to a heat transfer medium; a heat storage device for storing the recovered heat energy so as to supply the mold heating system when needed.

[0046] In this embodiment, the mold heating unit includes: a heat exchange system for heating the mold using recovered heat energy; a temperature control system including a temperature sensor and an automatic controller for detecting and adjusting the mold temperature, monitoring the mold temperature in real time, and automatically adjusting it according to production requirements.

[0047] In this embodiment, the cooling unit includes: a cooling tower or a heat exchanger for cooling the circulating water heated by the mold; and a cooling water circulation system for returning the cooled water to the circulating water purification unit to achieve water recycling.

[0048] In this embodiment, the control and monitoring system includes: a PLC control system for realizing automatic control of the entire system, including purification of circulating water, recovery and utilization of heat energy, heating and cooling of molds, etc.; a remote monitoring platform, including a data acquisition module, a communication module and a cloud server, for realizing remote monitoring and data analysis of the system. Through the Internet of Things technology, production data is transmitted to the cloud server in real time, so that managers can grasp the system operation status at any time and conduct remote monitoring.

[0049] Specifically, the PLC control system uses pre-programmed control programs to monitor and operate each device in real time according to a pre-set logic and sequence. Sensors in the system (such as temperature, pressure, and water quality sensors) transmit monitoring data to the PLC, which then makes decisions and executes corresponding control commands based on the collected data. The PLC control system is highly reliable and flexible, allowing for programming and adjustment based on actual needs to ensure stable and efficient system operation. Various sensors and devices in the system transmit data to the data acquisition module, which in turn transmits the data to a cloud server via a communication module. Administrators can access the cloud server via a computer or mobile device to view the system's real-time operating status, historical data, and analysis reports, and perform remote control and adjustments. This enables comprehensive monitoring and intelligent management of the purified circulating water system, improving system operability and maintenance efficiency, reducing the need for manual intervention, and ensuring efficient and stable system operation.

[0050] In this embodiment, the deep purification device includes an ion exchanger and a reverse osmosis membrane device, which are used to remove ions and tiny particles in water respectively.

[0051] Specifically, an ion exchanger is a device used to remove dissolved ions (such as calcium, magnesium, sodium, and heavy metal ions) from water. Its primary principle is to utilize ion exchange resins, replacing ions in the water with harmless ions bound to the resin through an ion exchange reaction, thereby removing impurities. Ion exchangers effectively remove hardness ions such as calcium and magnesium, as well as heavy metal ions, from water, preventing scaling and corrosion in cooling water systems. Reverse osmosis membrane systems remove dissolved salts, organic matter, bacteria, and viruses, providing a highly purified water source. This multi-level purification process ensures the quality of the circulating water, improving cooling efficiency and system stability during aluminum casting production.

[0052] In this embodiment, the thermal energy storage device of the thermal energy recovery unit includes a hot water storage tank or a thermal oil storage tank.

[0053] Throughout this specification, terms such as "one embodiment," "some embodiments," or "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, illustrative uses of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0054] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. Aluminum casting production clean circulating water system, characterized by: include: a. Circulating water purification unit, used to purify wastewater generated during the production process, including primary filtration, precision filtration and deep purification; b. A heat recovery unit, including a heat pipe or heat exchanger and a heat storage device, for recovering and storing heat from the circulating water to supply the mold heating system; c. Mold heating unit, including a heat exchange system and temperature control system, used to heat the mold using recovered heat energy and monitor and adjust the mold temperature in real time; d. Cooling unit, including a cooling tower or heat exchanger and a cooling water circulation system, used to cool the circulating water after being heated by the mold; e. Control and monitoring system, including PLC control system and remote monitoring platform, used to realize automatic control and remote monitoring of the entire system.

2. The clean circulating water system for aluminum smelting and casting production according to claim 1 is characterized in that: The circulating water purification unit comprises: Primary filtration device, used to remove large particles of impurities in water; Precision filtering device to further intercept tiny particles; The deep purification device uses ion exchange and reverse osmosis technology to remove soluble salts, heavy metal ions and organic matter in the water.

3. The clean circulating water system for aluminum smelting and casting production according to claim 1 is characterized in that: The heat recovery unit comprises: Heat pipes or heat exchangers are used to transfer heat energy from circulating water to a heat transfer medium; Thermal energy storage device, used to store recovered thermal energy so as to supply the mold heating system when needed.

4. The clean circulating water system for aluminum smelting and casting production according to claim 1 is characterized in that: The mold heating unit includes: Heat exchange system for heating the mold using recovered heat energy; The temperature control system, including temperature sensors and automatic controllers, is used to detect and adjust the mold temperature, monitor the mold temperature in real time, and automatically adjust it according to production needs.

5. The clean circulating water system for aluminum smelting and casting production according to claim 1 is characterized in that: The cooling unit comprises: Cooling tower or heat exchanger, used to cool the circulating water after being heated by the mold; The cooling water circulation system is used to return the cooled water to the circulating water purification unit to achieve water recycling.

6. The clean circulating water system for aluminum smelting and casting production according to claim 1 is characterized in that: The control and monitoring system includes: PLC control system is used to realize the automation control of the whole system, including the purification of circulating water, recovery and utilization of heat energy, and heating and cooling of molds; The remote monitoring platform, including a data acquisition module, a communication module and a cloud server, is used to realize remote monitoring and data analysis of the system. Through the Internet of Things technology, production data is transmitted to the cloud server in real time, allowing managers to grasp the system operation status at any time and conduct remote monitoring.

7. The clean circulating water system for aluminum smelting and casting production according to claim 2 is characterized in that: The deep purification device includes an ion exchanger and a reverse osmosis membrane device, which are used to remove ions and tiny particles in water respectively.

8. The clean circulating water system for aluminum smelting and casting production according to claim 1 is characterized in that: The heat energy storage device of the heat energy recovery unit includes a hot water storage tank or a hot oil storage tank.

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