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Industrial Grade Asphalt Filter Strainer Unit

Liquid Asphalt Buffer Tank with Level Control

Vertical asphalt melting device (with stirring mechanism)

Asphalt Filter Strainer Unit from China Suppliers - Industrial Grade Purification Equipment for High-Temperature Asphalt

The asphalt filter is an essential piece of purification equipment in the asphalt transportation and production system. Manufactured in China, this filter effectively removes mechanical impurities, coke particles, and solid lumps from high-temperature liquid asphalt. By preventing these contaminants from obstructing nozzles, pump bodies, valves, and metering instruments, our asphalt filter ensures a seamless flow in the pipeline and maintains the stability of product quality. As trusted suppliers and a leading factory in the industry, we guarantee that our asphalt filters enhance operational efficiency and contribute to superior asphalt production processes

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

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.

Self-cleaning Asphalt Filter

Automatically scrapes off impurities on the filter screen, no need for manual disassembly, suitable for high automation levels.

Working Characteristics

Working Temperature: Usually 130 - 200℃.

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

Insulation: Must be equipped with heating/insulation (thermal oil, steam or electric) to prevent solidification.

Accuracy: Common filtration accuracy: 20 - 80 mesh.

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 modified and emulsified asphalt production equipment.

Differences from a Buffer Tank

Buffer Tank

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

Filter

Specifically designed to remove solid impurities; it does not provide pressure stabilization or material storage functions.

Frequently Asked Questions

Q: Why is heating necessary for asphalt filters?

A: Asphalt can cool and solidify at lower temperatures. Heating systems (thermal oil or electric) prevent the asphalt from blocking the filter screen.

Q: What is the most common type of asphalt filter for general use?

A: The Basket Filter (Cylinder Filter) is the most common due to its large contaminant capacity and ease of maintenance.

Q: Can I clean the filter without stopping the production line?

A: Yes, by using a Double-tube Switching Filter, you can switch flow between tubes to clean one while the other remains in operation.

Q: What filtration accuracy should I choose?

A: Typical accuracy ranges from 20 to 80 mesh, depending on your specific equipment requirements and the type of asphalt being processed.

Q: How does a filter protect an asphalt pump?

A: It removes hard impurities like sand and rust that could otherwise cause mechanical wear or damage to the pump's internal components.

Q: Are self-cleaning filters worth the investment?

A: They are ideal for highly automated systems where manual disassembly is difficult or where continuous operation is critical.