The asphalt distributor truck is the core equipment of modern road construction. It is like a "precision brush" for roads. By precisely controlling the spraying of 160-180℃ high-temperature asphalt (with an accuracy of 0.3~3.5L/m²), it provides a uniform and reliable bonding layer for every inch of road surface, whether it is the modified asphalt synchronous sealing layer of highways or the micro-surfacing maintenance of urban roads. Its three-layer insulation tank (heat loss ≤1.5℃/h) and 36-nozzle intelligent spraying system ensure zero material waste and zero construction faults, directly increasing the service life of the road surface by more than 30%, while reducing labor costs by 3 times. It can be called the invisible guardian of road quality and durability, and the technical cornerstone of the infrastructure efficiency revolution.
♦ The core working principle and key technology of asphalt distributor are the focus of many customers. Let's learn about it today.
◊ First of all, we need to know the three key components of the Howo asphalt distributor truck:
◊ After knowing the key components, the core working principle of the Howo Bitumen Asphalt Spreader is as follows:
Asphalt heating: burner (diesel/G20) heats the heat transfer oil → the heat transfer oil circulates in the coil in the tank → indirectly heats the asphalt to 160-180℃ (avoiding coking caused by direct fire heating).
Insulation maintenance: 50mm insulation layer + stainless steel shell → temperature drop ≤2℃/hour (no need for repeated heating during construction breaks).
Power source: chassis power take-off (PTO) → drive hydraulic pump → provide high-pressure hydraulic oil → drive asphalt pump (flow rate 680L/min).
Intelligent control: cab or rear console adjustment → nozzle solenoid valve independent switch/flow rate → achieve 0.3~3.5L/m² precise spraying.
During operation: asphalt is pumped out from the bottom of the tank → sprayed through the nozzle → excess asphalt returns to the top of the tank through the oil return pipe (to avoid pipe cooling and blockage).
When shut down: turn on the circulation mode → asphalt continues to flow in the tank (to prevent sedimentation and stratification).
◊ In order to provide our customers with a more perfect Emulsion Asphalt Bitumen Distributor Truck, CEEC factory selects the equipment with the best materials for the corresponding parts:
1. Tank system (asphalt storage and insulation core)：
|
Structural layer |
Material/process |
Function |
|
Inner tank |
4mm boiler steel plate |
High temperature resistance (＞200℃) |
|
Insulation layer |
50mm rock wool/polyurethane |
λ≤0.035W/(m·K) Ultra-low thermal conductivity |
|
Outer Shell |
304 stainless steel plate |
Anti-corrosion + mechanical protection |
|
Reinforced design |
Vacuum negative pressure molding |
Anti-external pressure deformation (tank pressure＞0.1MPa) |
2. Operation system (spraying actuator)
Spraying rod: foldable design (working width 4.5m → transport width 2.5m), built-in 36 nozzles (15cm spacing).
Asphalt pump: high viscosity gear pump (QGB680 model) → temperature resistance 200℃ + shear resistance (adaptable to modified asphalt).
Control terminal: semi-intelligent panel (preset flow/speed linkage)
3. Auxiliary system (functional guarantee)
Heating system: Italian imported burner + thermal oil furnace (thermal efficiency > 85%).
Power system: 6kW diesel generator → independent power supply (avoid consuming chassis battery).
Cleaning system: diesel flushing pipeline → prevent asphalt residue from solidifying.
Whatsapp : +86 13647297999
Email : tom@ceectrucks.com
Tel : +86 13647297999
