The automatic candle filter combines advanced filtration technology with intelligent automation, offering efficient and continuous solid - liquid separation solutions. Engineered for high - performance and reliability, it is the ideal choice for diverse industrial applications where precision and uninterrupted operation are crucial.
I. Product Introduction
The automatic candle filter is a state - of - the - art filtration equipment designed to separate solids from liquids with high efficiency. Its core component is a set of cylindrical “candle” - shaped filter elements, typically made of high - quality stainless steel, sintered metal, or high - performance filter cloth. These filter elements are vertically installed in a pressure - resistant vessel. When the fluid mixture enters the filter, the liquid passes through the pores of the filter elements while the solids are retained on the surface, achieving solid - liquid separation. With an integrated automatic control system, the filter can complete processes such as filtration, cake formation, backwashing, and cake discharge automatically, reducing manual intervention and improving operational efficiency. This makes it widely applicable in industries like chemical, pharmaceutical, food, and environmental protection.
Filtration Phase
Fluid Inflow: The fluid to be filtered, a mixture of liquid and solid particles, enters the filter vessel through the inlet. Driven by pressure (either from a pump or gravity, depending on the system design), the fluid uniformly distributes around the outer surfaces of the filter elements.
Solid - Liquid Separation: As the fluid permeates from the outside to the inside of the filter elements, the porous structure of the elements acts as a barrier. Solid particles larger than the pore size are retained on the outer surfaces of the filter elements, gradually forming a filter cake. Meanwhile, the clarified liquid passes through the elements and collects at the bottom of the vessel, then flows out through the outlet for subsequent use or processing.
Cake Formation and Monitoring
Continuous Filtration: As the filtration continues, the filter cake on the surface of the filter elements gradually thickens. During this process, sensors within the filter continuously monitor parameters such as differential pressure across the filter elements and the level of the liquid in the vessel. These real - time monitoring data are crucial for determining the appropriate time to start the cleaning process.
Self - Cleaning Trigger
Differential Pressure Trigger: When the filter cake reaches a certain thickness, it increases the resistance to fluid flow, causing the differential pressure between the inlet and outlet of the filter to rise. Once this differential pressure reaches a pre - set value (usually 0.3 - 0.5 MPa, depending on the application and filter design), it signals the start of the self - cleaning process.
Time - Based Trigger: In addition to the differential pressure, the filter can also be set to initiate cleaning based on a pre - determined operation time. For example, in applications with relatively stable fluid properties, the filter may start the cleaning process every 8 - 24 hours to ensure consistent filtration performance.
Backwashing and Cake Discharge Phase
Backwashing: First, the inlet valve closes to stop the inflow of the fluid mixture. Then, a reverse flow of clean fluid (such as clean water, compressed air, or a combination of both, depending on the fluid characteristics) is introduced into the filter elements. The high - velocity reverse flow scours the surface of the filter elements, loosening the filter cake.
Cake Discharge: After the backwashing process weakens the adhesion between the filter cake and the filter elements, the bottom discharge valve opens. Under the action of gravity or additional pressure (such as compressed air blowing), the loosened filter cake is discharged from the bottom of the filter vessel. The entire cleaning process can be completed within 5 - 15 minutes, depending on the thickness of the filter cake and the cleaning method.
Filtration Resumption Phase
After the cake discharge is completed, the discharge valve closes, and the inlet valve reopens. The filter then resumes its normal filtration operation, ready to handle the next batch of fluid mixture, ensuring continuous and stable solid - liquid separation.
| Key Advantages | Description |
|---|
| Fully Automatic Operation | Equipped with a PLC - based control system, the filter can automatically complete the entire filtration cycle, including filtration, cleaning, and cake discharge, reducing labor costs and human errors. |
| High - Efficiency Filtration | The unique candle - shaped filter elements provide a large filtration area, enabling high - flow - rate filtration. It can handle fluid volumes ranging from 10 - 500 m³/h, depending on the model, while maintaining excellent separation efficiency. |
| High - Quality Filtration | With filtration precision ranging from 0.5 - 500 microns, the filter can effectively remove a wide variety of solid particles, meeting the stringent requirements of different industries for filtrate clarity and purity. |
| Low - Cost Maintenance | The filter elements are durable and have a long service life. The automatic cleaning system reduces the frequency of element replacement. Additionally, the modular design of the filter makes component inspection and replacement more convenient, lowering overall maintenance costs. |
| Flexible Adaptability | Available in different materials (stainless steel 304/316L, sintered metal, etc.) and sizes, the filter can be customized to adapt to various fluid properties, operating pressures (≤1.0 MPa), and temperatures (5 - 80℃). It also supports multiple installation methods, such as vertical or horizontal. |
| Safe and Reliable | The pressure - resistant vessel and safety interlock devices ensure safe operation under high - pressure conditions. The automatic control system monitors the operation status in real - time and triggers alarms and emergency stop functions in case of abnormal situations, guaranteeing the safety of equipment and personnel. |
| Parameter Category | Specific Parameters |
|---|
| Filter Body Material | Stainless steel 304, Stainless steel 316L, Carbon steel lined with rubber |
| Filter Element Material | Stainless - steel wire mesh, Sintered metal powder, High - performance filter cloth |
| Filtration Precision | 0.5μm, 1μm, 5μm, 10μm, 20μm, 50μm, 100μm, 500μm (customizable) |
| Operating Pressure | ≤1.0 MPa |
| Operating Temperature | 5 - 80℃ |
| Single - unit Treatment Capacity | 10 - 500 m³/h |
| Number of Filter Elements | 10 - 100 (varies by model) |
| Backwash Medium | Clean water, Compressed air, Air - water mixture |
| Backwash Pressure | 0.4 - 0.8 MPa |
| Backwash Time | 5 - 15 minutes |
| Inlet/Outlet Pipe Diameter | DN50 - DN300 (customizable) |
Chemical Industry
Chemical Reaction Filtration: Filters reaction products to separate catalysts, unreacted raw materials, and other solid impurities, ensuring the purity of chemical products and facilitating subsequent processing steps.
Wastewater Treatment: Removes suspended solids, precipitates, and other pollutants from chemical wastewater, helping to meet environmental discharge standards and enabling the recycling of treated water in some cases.
Pharmaceutical Industry
Drug Production Filtration: Filters drug solutions during the production process to remove particles, bacteria, and other contaminants, ensuring the safety and quality of pharmaceutical products. It is also used in the filtration of biological products, such as vaccines and enzymes.
Purification of Intermediate Products: Separates solid - phase substances from intermediate products in pharmaceutical synthesis, improving the yield and purity of the final drugs.
Food and Beverage Industry
Production Water Filtration: Purifies production water by removing suspended solids, microorganisms, and organic impurities, ensuring the safety and hygiene of food and beverage products.
Product Filtration: Filters beverages (such as juice, beer, and wine), edible oils, and other food products to improve clarity, remove sediment, and enhance product quality and shelf - life.
Environmental Protection Industry
Industrial Waste Gas Treatment: In some processes, the filter can be used to remove solid particles from industrial waste gas, reducing air pollution and protecting the environment.
Sludge Dewatering: Separates water from sludge in wastewater treatment plants, reducing the volume of sludge and facilitating subsequent disposal or resource utilization.
How long does the filter element of the automatic candle filter last?
The service life of the filter element depends on various factors, including the nature of the fluid being filtered, filtration precision, and operating conditions. Under normal circumstances, stainless - steel wire mesh elements can last 1 - 3 years, while sintered metal or filter cloth elements may last 0.5 - 2 years. Regular maintenance and proper operation can extend the service life of the elements.
Can the automatic candle filter handle highly viscous fluids?
Yes, the filter can be customized to handle highly viscous fluids. By adjusting parameters such as filtration pressure, filter element material, and pore size, as well as using appropriate pre - treatment methods, the filter can achieve effective solid - liquid separation for viscous fluids. However, it is recommended to consult our technical team for specific customization solutions.
What should I do if the differential pressure of the filter rises abnormally during operation?
First, check whether the inlet and outlet valves are fully open and if there are any blockages in the pipelines. Then, monitor the operation status of the filter elements and the accumulation of the filter cake. If the problem persists, it may indicate that the filter elements are severely blocked or the cleaning system malfunctions. In this case, stop the filter immediately, and contact our technical support team for further inspection and troubleshooting.
The automatic candle filter stands out as a reliable, efficient, and intelligent solid - liquid separation solution. Its advanced features, including full - automation, high - efficiency filtration, and wide adaptability, make it an indispensable equipment for numerous industries. Whether it's ensuring product quality in manufacturing or contributing to environmental protection in wastewater treatment, this filter delivers consistent performance. Choose our automatic candle filter to optimize your filtration processes, improve productivity, and reduce operational costs.
If you are interested in this product or have any questions, please feel free to contact us at any time.
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