Asphalt mixing plant

沥青混合料搅拌设备，生产能力30-320吨/小时，整机自动化程度高，计量准确，可靠性高，是高等级公路建设和养护的理想设备。沥青混合料搅拌设备是我单位引进国际先进技术结合国内高速公路特点而研制开发的新型产品。其关键部件燃烧器、传感器等均采用国际一线品牌元件；控制系统采用西门子可编程控制器和控制计算机，可对生产过程中的称量、拌和、放料等进行自动、手动控制；搅拌机衬板、叶片采用高耐磨合金铸件，拌臂采用合金铸钢，使用寿命长；骨料采用累加剂量方式，粉料及沥青均采用单独计量方式，以保证配料精度和可靠性；热骨料、矿粉采用斗式双链提升机，并有自动张紧装置。燃烧系统备有：轻油/重油/燃煤型燃烧器。除尘系统有重力除尘、旋风除尘、水除尘、袋式除尘；成品料仓有旁置式、底置式（30、60、80、100、120、160、240吨）等多种组合形式供用户选择。

3.2.1、 Drying drum interior structure

Scientific and reasonable lifting board make material at perfect condition, good end sealing and heat preserving material outside drum body, and stainless heat preserving layer, all these enhance the thermal efficiency of drying drum.

3.2.2、 Imported oil burner

Using high performance international well-know brand burner, this burner is made by using international latest flame technology, It can use different kinds of heavy oil and residual oil and realize oil and realize automatic switch of light or heavy oil wind and fuel ration. The advanced oil supplying system make heavy oil, residual oil fully atomization and burned. The fuel save ration can reach 7~15%, the flame regulating ration can reach 10:1.
The LCD display realize monitoring and modification for system parameters and fault alarming information. All the component control executing by PLC controller. It is convenient and simple to operate. The burner has the following features comparing normal burner: advanced technology, reasonable structure, intelligent zed, high safely and performance. Low wearing, low noise and low pollution.

3.4、 Mixing system of asphalt mixing plant

The whole machine with a square frame has a feature of stable running, safety, and good sight.
The scale board and blade head made by chrome and white abrade-bearing cast iron have long service life.
Using double cylinder controlled overturning type discharging gate, the hopper have a advanced feature of short time discharging, good seal, easy open and close, avoid clamping stagnation.

The filling rate is no more than 60%, making the stones and asphalt mixing sufficiently, shorten the mixing time.
Raliable lubricating system: when adopting automatic lubricating system, using 380v mightiness motor can pump the lubricant to lubricating point, it can also use computer to set program, and pump the lubricat to lubricating point regularly, the manual lubricating system as stand by syetem, can keep the lubricating in time and reliably.

3.5、 Hot-conducting oil heating and asphalt suppplying system

Adopting automatic horizontal type heat conducting oil heating syetem(modularization transportation and installation) and imported burners, it have function of auto-ignition, auto-monitoring function. The burner can change with conflagration small fire working according to the temperature of the heat conducting oil.

3.6、 Dust catching system of asphalt mixing palnt

Gravity dust collector: the dust collecting effect can reach about 80%, the object is power is power which is more than 75 μm. All the power of primary dust collecting can be sent into elevator by screw conveyor of recycing.

The loculose high pressure impulse dust collector: the bag material use NOMEX, United States, to guarantee the long time running under the high temprature. The service life is long and with good air permeability, the dust collecting object is dust who already finished primary dust collecting but diameter is less than 75 μm. The bag dustcollecting effect can reach more than 99.5%, and meet environmental demand. The bag control is connected with host machine and have temperature protecting syetem.

3.7、 Power supply and recycling system of asphalt mixing plant

The reclaim power after dust collecting is sent into power recycling tank by three blades roots fan or screw conveyor or bucker type elevator, when do not use recycled power, it can be exhausted by exhaust screw conveyor. The exhaust power end is equipped with special design spraying dust proof screw conveyor and avoid dust flying.

The whole main frame under condition of minus press seal condition, avoid leakage, and improved the environment performance.

There is level indicator on the power tank, on top of the tank there is dust collector, the air hammer under come bottom of tank can avoid arching. The new power tank and recycling tank top have over pressuring protection system and avoid breaking. The power in new tank and recycling tank can be conveyed into power weighing hopper bu screw conveyor according to proportion.

3.8、 The pneumatic system of asphalt mixing plant

The pneumatic system is equipped with imported and china famous brand air compressor with safe and reliable work. It use improted electromagnetic valve. The pneumatic value use integration insrallation, this avoid dust and water entering and make sure long time opration.

3.9、 Electrical control system and central control house of asphalt mixing plant

The control system use computer control, screen display and keyboard input. It is equipped with siemens S7 300 high performance programmable controller, PROFINET general line control technology, distributing type I/O, use industrial ethe transferring and computer double screen control technology. The working performance is reliable, with convennient operation and direct display and high automatic. The control house is commodious which makes male the operator feel comfortable.