Oil smoke suction system for wet-process battery diaphragm production

Abstract

The utility model discloses an oil fume suction system for wet-process battery diaphragm production, which is mainly used for effectively recovering and treating oil fume generated in the wet-process battery diaphragm production process. The system comprises an oil smoke cover, an electrostatic oil removal cooler, an electrostatic oil removal filter, a smoke exhaust fan, a smoke exhaust chimney and the like. The oil fume cover is located at an oil fume generation source and used for capturing and guiding oil fume, the electrostatic oil removal cooler cools the oil fume to liquefy the oil fume, and the electrostatic oil removal filter removes oil drops according to the electrostatic adsorption principle, so that it is ensured that discharged air reaches the environmental protection standard. And the smoke exhaust fan and the smoke exhaust chimney act together to ensure that the treated air is discharged smoothly and meets the environmental protection requirement. The design of the system aims at reducing air pollution of a workshop and improving the cleanliness of a production environment by efficiently recovering oil smoke. The oil fume treatment device has good environmental protection property and high efficiency, can effectively improve the air quality of a workshop, and ensures effective treatment of oil fume in the production process.

Description

Technical Field

[0001] This utility model relates to the technical field of lithium battery separator production equipment, and more specifically, to an oil fume extraction system for wet-process battery separator production. Background Technology

[0002] The production process of wet-process battery separators involves high-temperature processing, which releases corresponding organic matter and polymer fumes, forming sticky oil stains. In the high-temperature and continuous production environment, oil fumes easily adhere to the main body of the equipment and disperse in the air. The separator production workshop has extremely high requirements for cleanliness. The stable operation of the oil fume extraction system is conducive to maintaining cleanliness, avoiding secondary pollution, and improving production stability.

[0003] Existing fume extraction systems use centrifugal fans and suction ducts to adsorb fumes before direct discharge, resulting in low space purification rates. After the fumes condense, oil tends to accumulate in the ducts, requiring regular disassembly and cleaning.

[0004] Therefore, how to provide a fume extraction system that can continuously and stably recover oil fumes has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] The purpose of this invention is to provide an oil fume extraction system that can continuously and stably recover oil fumes.

[0006] This utility model provides an oil fume extraction system for wet-process battery separator production, including an oil fume hood, an electrostatic oil removal cooler, an electrostatic oil removal filter, an exhaust fan, and an exhaust chimney connected in sequence along the flue gas flow direction;

[0007] The fume extraction system also includes an oil collection tray, which is used to receive the oil collected by the electrostatic precipitator.

[0008] The air inlet of the fume hood is located at the source of the oil fume generation in the battery separator production line, and is used to collect and introduce the oil fume.

[0009] Optionally, the electrostatic oil removal cooler and the electrostatic oil removal filter are connected by a duct, and a fire damper is provided on the connecting duct.

[0010] Optionally, a wind speed sensor is connected to the top of the fume hood, and the exhaust fan is a variable frequency fan;

[0011] The fume extraction system also includes a control system, and the variable frequency fan and wind speed sensor are all electrically connected to the control system.

[0012] Optionally, the bottom of the oil collection tray is provided with an inclined guide channel, and the end of the guide channel is connected to an automatic oil discharge valve. The oil discharge valve is linked with the liquid level sensor. When the liquid level reaches the set threshold, the oil discharge valve can be triggered to discharge the oil to an external oil storage container.

[0013] Optionally, a composite filter layer is provided at the exhaust chimney outlet, including glass fiber filter cotton and activated carbon adsorption layer, and the filter cotton is removable and replaceable.

[0014] Optionally, the coverage area of ​​the fume hood extends to the high-temperature roller section of the diaphragm production equipment, and a transparent observation window is provided on the side of the fume hood to monitor the fume adsorption status.

[0015] Optionally, the high-voltage electrode plates of both the electrostatic oil removal cooler and the electrostatic oil removal filter adopt a segmented power supply design, with each segment's voltage independently adjustable to adapt to different oil fume concentrations.

[0016] Based on the technical content disclosed in this utility model, the following beneficial effects are achieved:

[0017] This utility model provides an oil fume extraction system for wet-process battery separator production. Through components connected sequentially along the flue gas flow direction, including an oil fume hood, an electrostatic precipitator cooler, an electrostatic precipitator filter, an exhaust fan, and an exhaust chimney, it effectively achieves the recovery and treatment of oil fumes during production, improving the cleanliness of the workshop environment. The oil fume hood is located at the source of oil fume generation, effectively capturing and introducing the fumes to ensure they do not diffuse into the workshop air. The electrostatic precipitator cools the oil fumes, liquefying the oil mist into oil droplets, enhancing waste oil recovery efficiency. The electrostatic precipitator filter uses the principle of electrostatic adsorption to remove oil droplets from the liquid oil fumes, ensuring that the emitted air meets environmental standards. This system design efficiently removes oil fumes generated during production, reducing environmental pollution and helping to improve the air quality of the production workshop. Furthermore, through effective oil fume collection and filtration, the system avoids waste oil accumulation, reduces the frequency of equipment cleaning and maintenance, and improves production efficiency.

[0018] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0020] Figure 1 This is a structural diagram of the oil fume extraction system for wet-process battery separator production according to this utility model.

[0021] Explanation of reference numerals in the attached diagram: 1. Fume hood; 2. Electrostatic precipitator cooler; 3. Fire damper; 4. Oil collection tray; 5. Electrostatic precipitator filter; 6. Exhaust fan; 7. Exhaust chimney. Detailed Implementation

[0022] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0023] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0024] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0025] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0027] This utility model relates to an oil fume extraction system for wet-process battery separator production, which aims to ensure a clean workshop environment and improve the recycling efficiency of waste oil by efficiently recovering and treating oil fumes generated during the production process.

[0028] See Figure 1 This utility model discloses an oil fume extraction system for wet-process battery separator production, comprising an oil fume hood 1, an electrostatic oil removal cooler 2, a fire damper 3, an electrostatic oil removal filter 5, an exhaust fan 6, and an exhaust chimney 7, etc., connected sequentially along the direction of flue gas flow.

[0029] Specifically, the fume hood 1 is installed at the source of oil fumes on the battery separator production line. An air inlet is located inside the hood to collect the generated oil fumes and guide them into the system. The hood is designed with good sealing and a large coverage area to ensure effective capture of all oil fumes and prevent them from spreading into the workshop air. A wind speed sensor is installed on the top of the hood to monitor the oil fume flow rate in real time, ensuring efficient adsorption. Preferably, the fume hood 1 covers the high-temperature roller area of ​​the separator production line, with the air inlet facing the source of oil fume generation. A transparent observation window (made of high-temperature resistant tempered glass) is located on the side of the hood for real-time monitoring of the oil fume adsorption status.

[0030] The electrostatic precipitator cooler 2 is located downstream of the fume hood 1 and is responsible for cooling the fumes, condensing the oil mist in the fumes into liquid oil droplets. The cooler is equipped with multiple cooling components, and by adjusting the temperature, it ensures that the oil mist in the fumes can be liquefied quickly.

[0031] The electrostatic oil removal filter 5 employs the principle of electrostatic adsorption, using high-voltage electrode plates to charge liquid oil fumes, adsorbing oil droplets onto the electrode plates and removing fine particles. The high-voltage electrode plates all feature a segmented power supply design, with each segment's voltage independently adjustable to adapt to different oil fume concentrations. This filter effectively removes oil droplets and harmful substances from oil fumes, ensuring that emitted air meets environmental standards.

[0032] The oil collection tray 4 is located below the electrostatic oil removal filter 5 and is used to collect the condensed and filtered liquid oil fumes. An inclined guide channel is provided at the bottom of the oil collection tray 4 to guide the oil flow to the drain valve. The drain valve is linked to a liquid level sensor; when the oil level reaches a set threshold, the liquid level sensor triggers the drain valve to discharge the waste oil to an external oil storage container for easy processing and recycling.

[0033] The exhaust fan 6 is driven by a variable frequency drive, which monitors airflow in real time and automatically adjusts the fan speed to ensure efficient adsorption and emission of fumes. The exhaust fan delivers the filtered air to the exhaust chimney 7. The exhaust chimney 7 is equipped with a composite filter layer at its outlet, including glass fiber filter cotton and an activated carbon adsorption layer, to further purify harmful components in the gas and ensure that the emitted gas meets environmental protection standards.

[0034] To ensure system safety, this invention incorporates a fire damper 3 located at the duct connection between the electrostatic oil separator 2 and the electrostatic oil filter 5. The fire damper 3 automatically closes the duct in case of fire or abnormally high temperatures, preventing the spread of flames and thus preventing fire propagation. When the temperature reaches a set threshold, the fire damper 3 automatically closes, ensuring safe system operation.

[0035] The fire damper 3 is designed to ensure the system responds quickly to the presence of a source of ignition or high temperature, protecting the system and the surrounding environment from damage. The fire damper's installation location is carefully designed to ensure the most effective interruption of potential fire risks within the fume recovery path.

[0036] The working principle of this system is to collect, cool, filter, recycle waste oil, and treat emissions of oil fumes through a series of efficient devices and automatic control systems.

[0037] 1. Collection and introduction of cooking fumes

[0038] When the wet-process battery separator production line starts operating, the generated fumes are drawn into the system through the fume hood 1. The air inlet inside the fume hood draws in the fumes through a negative pressure effect, and the fume hood 1 can fully cover the sources of fumes on the production line.

[0039] 2. Cooling and oil fume liquefaction

[0040] After cooling, the oil fumes pass through the electrostatic precipitator 2. Under the action of the cooling components, the temperature of the oil fumes drops rapidly, and the oil mist is converted into liquid oil droplets.

[0041] 3. Electrostatic adsorption and waste oil collection

[0042] After cooling, the liquid oil fumes are adsorbed and collected in the electrostatic oil removal filter 5, and the collected waste oil is discharged into the oil collection tray 4 for final centralized treatment.

[0043] 4. Waste oil discharge and recycling

[0044] The drain valve at the bottom of the oil collection tray 4 is linked to a liquid level sensor. When the liquid level reaches a set threshold, the liquid level sensor triggers the drain valve to discharge waste oil to an external oil storage container, facilitating waste oil treatment and recycling. This design effectively reduces oil accumulation and improves waste oil recycling efficiency.

[0045] 5. Air emissions

[0046] The treated air is then delivered to the exhaust chimney 7 via the exhaust fan 6. At the outlet of the exhaust chimney 7, a composite filter layer further removes fine particulate matter and harmful substances, ensuring that the emitted gas meets environmental standards. The fiberglass filter is removable and replaceable for easy daily maintenance.

[0047] Furthermore, the wind speed sensor on top of the fume hood 1 monitors the fume flow rate in real time and feeds the data back to the control system. Based on the feedback data, the control system automatically adjusts the wind speed of the variable frequency fan to ensure efficient fume recovery.

[0048] In summary, the oil fume extraction system for wet-process battery separator production of this utility model has the following advantages:

[0049] 1. High-efficiency oil fume recovery: The integrated series design of the oil fume hood 1, the electrostatic oil removal cooler 2, and the electrostatic oil removal filter 5 avoids the accumulation of oil in the pipes.

[0050] 2. Automated control: The system reduces manual intervention and improves the level of automation by controlling wind speed, automatically draining oil, and controlling fire dampers.

[0051] 3. Efficient waste oil recycling: Through the design of the oil collection tray 4 and the automatic oil discharge mechanism, waste oil is effectively recycled and treated.

[0052] 4. High safety: Fire damper 3 can automatically close in abnormal situations to prevent the spread of fire and ensure the safe and stable operation of the system.

[0053] This invention can not only efficiently handle the oil fumes generated during the production of wet-process battery separators, but also achieve automated and intelligent operation, ensuring a clean workshop environment and a safe and stable production process.

[0054] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A fume extraction system for wet cell separator production, characterized in that, The oil fume suction system comprises: an oil fume hood, an electrostatic oil removal cooler, an electrostatic oil removal filter, an exhaust fan and an exhaust chimney connected in sequence along the direction of the flue gas flow; the oil fume suction system further comprises an oil collecting tray for receiving the oil collected by the electrostatic oil removal cooler; the air inlet of the oil fume hood is located at the oil fume source of the battery diaphragm production line for collecting and introducing the oil fume.

2. The fume extraction system according to claim 1, characterized in that The electrostatic oil removal cooler and the electrostatic oil removal filter are connected by an air pipe, and a fireproof valve is arranged on the connecting pipeline.

3. The extraction hood system according to claim 1 or 2, characterized in that The top of the hood body of the oil fume hood is connected with a wind speed sensor, and the exhaust fan is a variable frequency fan. The oil fume suction system further comprises a control system, and the variable frequency fan and the wind speed sensor are electrically connected with the control system.

4. The extraction hood system according to claim 1 or 2, characterized in that The bottom of the oil collecting tray is provided with an inclined flow guide groove, and the end of the flow guide groove is connected with an automatic oil discharge valve.

5. The extraction hood system according to claim 1 or 2, characterized in that The outlet of the exhaust chimney is provided with a composite filter layer comprising glass fiber filter cotton and activated carbon adsorption layer, and the filter cotton is detachably replaced.

6. The extraction hood system according to claim 1 or 2, characterized in that The coverage area of the oil fume hood extends to the high temperature roller shaft part of the diaphragm production equipment, and the side surface of the hood body of the oil fume hood is provided with a transparent observation window for monitoring the oil fume adsorption state.

7. The extraction hood system according to claim 1 or 2, characterized in that The high voltage electrode plates of the electrostatic oil removal cooler and the electrostatic oil removal filter are designed to be supplied with power in a segmented manner, and the voltage of each segment is independently adjustable to adapt to different oil fume concentration conditions.

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