Main Functions
🛡️
Filter and remove impurities such as sand, rust, oxidized lumps, and woven fabric debris from the asphalt, protecting downstream equipment.
⚙️
Protect the equipment from being worn down by impurities, which could damage the asphalt pump, damage the flow meter, clog the spray gun, coil pipe and mold.
📊
Stabilize production and prevent supply interruption, uneven spraying and product defects due to impurity blockages.
✨
Improve quality and enhance the purity of the asphalt, especially showing significant effects on modified asphalt, emulsified asphalt, and carbon-based asphalt.
Common Structures and Types
Basket Filter (Cylinder Filter)
Vertical cylindrical structure, with stainless steel filter baskets inside. Easy to disassemble and assemble, large capacity for holding contaminants, most commonly used.
Y-type Filter
Small in size, low in resistance, mostly used for branch pipes and before pumps for simple filtration.
Double-tube Switching Filter
Two filter tubes connected in parallel, capable of switching and cleaning without production halt. Suitable for continuous production lines (mixing stations, modified asphalt, carbon plants).
Self-cleaning Asphalt Filter
Automatically scrapes off impurities on the filter screen, no need for manual disassembly and cleaning, suitable for systems with high automation levels.
Frequently Asked Questions
Q1: Why is heating essential for an asphalt filter?
Asphalt solidifies at lower temperatures. Heating ensures the asphalt remains in a liquid state, preventing the filter screen from becoming blocked by hardened material.
Q2: What is the typical filtration accuracy for asphalt processing?
Most asphalt filters use a mesh size between 20 and 80 mesh, depending on the specific requirements of the downstream equipment and the type of asphalt used.
Q3: When should I use a Double-tube Switching Filter?
This type is ideal for continuous production lines where you cannot stop the flow for cleaning. It allows you to switch to a clean filter without halting the process.
Q4: Can these filters be used for modified asphalt?
Yes, they are highly effective for modified, emulsified, and carbon-based asphalt, significantly improving the purity and quality of the final product.
Q5: What materials are the filters made of?
To withstand high temperatures and wear, the main cylinder is typically made of carbon steel, while the internal filter screen or basket is made of durable stainless steel.
Q6: Where is the best place to install the filter?
It is most effective when installed before critical components like asphalt pumps, metering devices, and spray systems to prevent damage and clogging.
