SBS Modified Asphalt Waterproof Material Production Line

SBS Modified Asphalt Waterproof Material Production Line usually includes the following main parts:

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Batching system

· Batching tank: used to mix raw materials such as base asphalt, SBS modifier, filler (such as stone powder), rubber powder and other additives in a certain proportion. The size and number of batching tanks are determined according to the production scale and process requirements. Generally, it includes 1 or more main batching tanks and auxiliary batching tanks for storing and adding specific raw materials.

· Measuring device: accurately measure the amount of various raw materials added. Common ones include electronic scales, flow meters, liquid level meters, etc. to ensure accurate batching ratios to ensure stable product quality.

· Mixing equipment: installed in the batching tank, the stirring blade is driven by a motor to fully stir and mix the raw materials in the tank, so that the SBS modifier is evenly dispersed in the asphalt to form a modified asphalt mixture. The shape, speed and installation position of the stirring blade will affect the stirring effect.

Modified asphalt preparation system

· Swelling tank: The prepared mixture is transported to the swelling tank. Under certain temperature and time conditions, the SBS modifier is fully swelled in the asphalt to form a modified asphalt with good performance. Swelling tanks are usually equipped with heating devices and stirring devices to control temperature and promote the swelling process.

·Colloid mill or high-speed shearing machine: It is one of the core equipment for modified asphalt production. The colloid mill shears, grinds and disperses the swollen asphalt mixture through the gap between the high-speed rotating grinding disc and the stator, further refines the SBS modifier and evenly disperses it in the asphalt to form a stable colloid structure; the high-speed shearing machine uses the high-speed rotating rotor and stator to strongly shear the material to achieve a similar effect.

Conveying system

·Asphalt delivery pump: It is used to transport the base asphalt from the storage tank to the batching tank, swelling tank, colloid mill and other equipment, and to transport the prepared modified asphalt to the coil forming production line. Common ones include gear pumps, screw pumps, etc., and the appropriate pump type is selected according to the viscosity of the asphalt and the conveying distance.

·Pipelines and valves: Connect various production equipment to form a channel for material transportation. The pipeline needs to have good corrosion resistance and thermal insulation properties to prevent the asphalt from solidifying or deteriorating during transportation; the valve is used to control the flow direction and flow rate of the material to ensure the smooth progress of the production process.

Coil forming system

· Base unrolling device: Unroll the base material (such as polyester base, glass fiber base, etc.) from the reel and maintain a certain tension and speed to provide a stable base for the subsequent impregnation and coating process.

· Impregnation and coating equipment: Impregnate the modified asphalt evenly into the base material and apply a certain thickness of modified asphalt coating on both sides of the base, which can be achieved through equipment such as impregnation tanks, coating heads, scrapers, etc.

· Sanding or covering device: According to product requirements, fine sand, mineral particles (sheets) or polyethylene film and other covering materials are spread on the upper surface of the coil to improve the anti-slip, weather resistance and waterproof performance of the coil; the lower surface can also be treated accordingly as needed. ·Cooling and shaping device: Cool the coated coiled material to solidify and shape the modified asphalt coating to form a waterproof coiled material with certain strength and flexibility. Common cooling methods include air cooling, water cooling or natural cooling.

·Coiling machine: Automatically roll the cooled and shaped coiled material into a roll for easy storage, transportation and use. The coiling speed and tension control of the coiling machine have an important impact on the quality and appearance of the coiled material. An automatic control system is usually used to ensure a smooth and neat coiling process.

Control system

·Temperature control system: Monitor and control the temperature of each production link, such as asphalt heating temperature, swelling temperature, colloid mill working temperature, and baking temperature during coil forming. By installing thermometers, temperature sensors and heating or cooling equipment, precise temperature regulation is achieved to ensure the stability of the production process.

·Pressure control system: Monitor and control the pressure in pipelines and equipment to prevent excessive or low pressure from affecting the equipment and production process. For example, during asphalt transportation, the output pressure of the pump is controlled by pressure sensors and regulating valves to ensure smooth asphalt transportation.

·Liquid level control system: used to monitor the liquid level in containers such as batching tanks and swelling tanks to ensure that the amount of raw materials added and the amount of materials stored are within a reasonable range. Through the liquid level meter and control valve, automatic liquid replenishment or material discharging is realized to avoid production accidents caused by too high or too low liquid level.

·Electrical control system: Programmable logic controller (PLC) or distributed control system (DCS) is used to centrally control and monitor the operation of the entire production equipment. It realizes the functions of equipment start and stop, setting and adjustment of operating parameters, fault alarm and diagnosis, and improves the automation and reliability of the production process.

Auxiliary equipment

·Heat transfer oil furnace: provides heat energy for asphalt heating, swelling and other processes, and transfers heat to each device that needs heating through the heat transfer oil circulation system.

·Flue gas treatment equipment: Fumes and waste gas will be generated during asphalt heating and production. Equipped with flue gas treatment equipment, such as activated carbon adsorption device, catalytic combustion device, etc., to purify the waste gas and meet environmental emission standards 2.

·Laboratory testing equipment: used to test the quality of raw materials, semi-finished products and finished products, such as asphalt softening point tester, needle penetration tester, ductility tester, tensile testing machine, etc., to ensure that product quality meets relevant standards and requirements.