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Industrial Grade Asphalt Filter Strainer Unit

Liquid Asphalt Buffer Tank with Level Control

Vertical asphalt melting device (with stirring mechanism)

Vertical Solid Asphalt Melting Apparatus

Industrial Grade Asphalt Filter Strainer Unit - China Suppliers & Factory for High-Temperature Purification

The asphalt filter is an essential piece of purification equipment in the asphalt transportation and production process. As a leading manufacturer in China, our factory specializes in supplying high-quality asphalt filters designed to eliminate mechanical impurities, coke particles, and solid lumps from high-temperature liquid asphalt. This crucial filtration system prevents clogs in nozzles, pump bodies, valves, metering instruments, and subsequent production equipment, ensuring the seamless flow of asphalt through pipelines and maintaining the stability of product quality. Trust in our expertise as top suppliers in the industry to enhance your asphalt operations with reliable filtration solutions

Product Details

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.

Working Characteristics

🌡️ Working Temperature: Usually 130 - 200℃.

🏗️ Material: Cylinder made of carbon steel, filter screen made of stainless steel.

🔥 Heating System: It must be equipped with heating/insulation (such as thermal oil, steam or electric heating) to prevent the asphalt from cooling and solidifying and blocking the filter screen.

🎯 Filtration Accuracy: Common accuracy 20 - 80 mesh, selected according to process requirements.

Typical Installation Locations

📍Before the inlet of the asphalt pump.

📍Before the metering device.

📍Before the spraying system and spray gun.

📍At the front end of the modified asphalt and emulsified asphalt production equipment.

Differences from a Buffer Tank

Buffer Tank

Focuses on pressure stabilization, heat retention, degassing, and temporary storage.

Filter

Specifically removes solid impurities; no pressure stabilization or material storage function.

Frequently Asked Questions

Q1: Why is a heating system essential for an asphalt filter? Asphalt solidifies at lower temperatures. Heating via thermal oil or steam prevents the asphalt from clogging the filter screen and ensures smooth flow during filtration.

Q2: What is the most common filtration mesh for asphalt? The common filtration accuracy ranges from 20 to 80 mesh, depending on the specific requirements of the downstream equipment like pumps or spray guns.

Q3: Can I clean the filter without stopping the production line? Yes, by using a Double-tube Switching Filter. It allows you to switch the flow to a clean tube while the other is being serviced, ensuring continuous production.

Q4: What materials are used to construct asphalt filters? Typically, the outer cylinder is made of durable carbon steel to withstand high temperatures, while the internal filter basket is made of stainless steel for corrosion resistance.

Q5: Which filter is best for highly automated systems? A Self-cleaning Asphalt Filter is ideal for automated systems as it automatically removes impurities from the screen without requiring manual disassembly.

Q6: Where should the filter be installed for maximum pump protection? It should be installed directly before the inlet of the asphalt pump to catch any solid debris before it can cause mechanical wear or damage.