Roady Brand New 90t/H Asphalt Mixing Station
|Items ||Plant||Mixer||Weighing Accuracy||Installed||Fuel|
|Capacity(t/h) ||Capacity(kg) ||Power(kw) ||Consumption(kg/t) |
| Aggregates|| Fillers|| Bitumen|
1, Cold aggregate supply system
Four aggregate hoppers and four belt feeders, Aggregate belt conveyer. Tilted belt conveyer, middle filter.
aggregate belt feeder:
hopper volume:4*6.5m³;hopper width:3.2m;
Loading height: 3.0m; Vibrators on the hopper wall: 2×0.25kw;Belt width:500mm
Ring feeding unit Motor Power(Frequency conversion timing): 4×1.5kw;
Aggregate belt conveyer:
Belt width:500mm; Motor power: 4kw
middle filter:No vibration in middle filter and slanting
the tilted belt conveyer:
Belt width: 500mm; Motor power: 4kw
the aggregate belt feeder is featured with frequency conversion timing with credible capability, modularized design will be convenient for conveyance and erection;
it's equipped with pre-lubricating long-life bearings, tightening device and deflection block wheel on all rollers of belt conveyer, which will adjust tightness deflection of conveying belt; the cleaning device on conveying belt will prevent aggregates scratching belts;
Belt conveyer is equipped with urgent stop switch.
The tilted slanting middle filter will prevent oversize aggregates from entering the drying drum, which will reduce heat loss, prevent jam in aggregate elevator or vibrating screen
2. Drying drum
Drum diameter: 1.5m,
Drum length: 6.6m;
Drum obliquity: 4° ;
Motor power: 4×7.5kW
The drying drum is driven by four friction wheel, smoothly and evenly, universal joint; outside the drum is equipped with 50mm heat preservation layer to reduce heat loss; inside the drum is fixed with diversified blades for lifting aggregates to improve heat exchange efficiency and reduce fuel consumption; discharging outlet is placed with temperature detection device.
3.Light Oil burning system
A set of oil burner (fuel: diesel oil); the diesel tank will be supplied by client, a set of oil pipes;
Oil consumption: 600kg/h;
Wind fan power: 15kw
Oil pump motor: 3kw
(3)The burner characteristics:
Burner: the burner is equipped with
gas ignition device;
Oil burning adjust method:
automatic adjust; Adjust ratio: 1:3;
4.Hot aggregate elevator
Motor power: 5.5kw
Hopper reinforced material: 65Mn
Single rows of chains with double dowels, special structure in inlet, outlet and elevating hopper to reduce the abrasion and noises.
5. Wet dust catcher system
Gravity dust catcher, A set of six-drum cyclone dust catcher, a set of water dust catcher, threes screw conveyer make up of dust recycling system.
The power of drawing fan: 45kw
Water pump power: 2×3KW;
Screw conveyer power: 3*4kW
Three-grade dust removal system features with good dust collecting effect; larger-size dust from gravity dust catcher will be conveyed into aggregate elevator for recycling, smaller-size fillers from six-cyclone dust catcher will be conveyed into filler elevator for recycling.
6.Mixing tower assembly
(1) The vibrating screen with four layers. (single shaft outside)
Motor Power: 11kw
Mesh size:37.5×37.5,25×25,12×12,5×5 for a set in all;
Attention: The screen mesh can be chosen according to the clients' requirement, and the client must indicate when order the plant; or we will execute according to this configuration.
(2) Hot material bins
Components and specifications:
Four separated bins with seal cover; overflowing device equipped will prevent exceeding aggregate blocking the screen mesh;
(3) Weighing bins
1) aggregate weighing hopper:
Model: single hopper, suspending by three upholding points, with transportation fixed part;
Rated capability: 1000kg
2) Filler weighing hopper:
Model: single filler, suspending by three upholding points, with transportation fixed part;
Rated capability: 150kg
Filler conveying screw conveyer:4kw.
3) Asphalt weighing hopper:
Model: single filler, heat preservation, suspending by three upholding points, with transportation fixed part.
Rated capability: 70kg
The weighing sensor will be famous TOLEDO brand which is featured with accurate computation, offset could be compensated automatically.
Rated mixing capacity: 1100 kg/batch;
Installed power: 2×18.5kw;
1). Mixers are made from European advanced techniques and equipped with synchronizing gear and pneumatic turning door;
2). Double shafts will contrarotate, which makes the aggregate turning up and down, and ensure the mixture mixed evenly.
(5) Asphalt spraying system
Motor power of asphalt pump: 75kw
It's equipped with high pressure shower spraying deive with patent which will spray asphalt quickly and evenly by pressure, good for shortening the mixing time and improving the output.
7.Filler supply system
Components and specification
(1) Filler elevator:
filler temporarily storage silo volume:
Screw conveyer 4KW
Outlet of screw conveyer is placed with a butterfly valve to control impulse. Filler silo will equip with air pressure to explode agglomeration, which will ensure the filler could be supplied evenly and continuously.
8. Pneumatic system
A set of air compressor, a simple air compressor house, cylinder, electromagnetic valve and pneumatic pipeline;
An air compressor:1.05m3 /min
air compressor power: 7.5kw
The electromagnetic valve and cylinders will be famous Germany FESTO featured with credible capability and long service life;
9. Asphalt supply system
a diesel oil burner, a dump tank(2 m3), a set of diesel oil heated asphalt tank(30m3), pipes, valves and pump.
Conduction oil circulating pump power: 2.2kw;
Asphalt circulating pump:7.5KW
Diesel oil burner:0.75KW;
10.Electric control system
(1) Control house
The figure dimension3x2.2x2.5m; Copy container structure, the walls, door and windows are made of colorized steel plate. It's equipped with fission air conditioner.
The control house is featured with pleasing shape and good seal; easy to hoist and transport. Box type control cabinet, main electric parts are Siemens or Schneider international famous brand, which is equipped with interlock and two-grade protection; the big motor adopt reasonable voltage-reducing start; equipped with manual control device for urgency and displayer for aggregate balance, filler balance and asphalt balance; digital converter for cold aggregate; Japan OMRON colorized touch screen and PLC controller, can operate by automatically, Semi-automatically and manual control; Control is advanced, credible capability and accurate weighing, operation is convenient and obvious.
The technical index
Capability (standard conditions):
2. oil consumption(standard conditions): ≤6.5kg/t
3.Operation mode: automatism control, Semi-automatism control and manual control;
4. finished mixture temperature: 130~160ºC(plain asphalt)
5.The figure dimension:(L×W ×H)32m×27m×16m
6.The total installed power: 217kW
1.The technique requested about capability
It can be made clear that the capability of asphalt mixing plant is that under the standard conditions; it must fulfil the requirements as below simultaneously:
(1)Environment temperature :20°C,1 standard atmospheric pressure; local altitude should be no more than 1000m;
(2)The average humidity of Cold aggregate <5%
(3)The temperature of the hot asphalt mixture <160ºC
(4)The mixture is middle size, the density of stone material in the mixture≥ 1600kg/m3
(5)The content of filler in mixture <35%;
(6) dust content in cold aggregate should be
Less than 3%;
(7)The cold aggregate must be clean, there is no too many oversized aggregates, and it shouldn't include more soil and sundries. The cold aggregate supply should be continuous.
(8) The water content in filler material should < 0.5%, filler proportion in finished mixture≤ 8%; and the filler shouldn't be no conglomeration, agglomeration.
(9)The asphalt should be with well wrapping capability, during standard mixing circle, the aggregate should be completely wrapped by asphalt; the asphalt temperature should be controlled in the scope of 150ºC±5ºC. The using asphalt is normal asphalt .
2.The requirements for fuel:
A. Light oil: diesel oil,heat calorific power is no small than 46055kJ/kg;
B. The heavy oil model is determined according to the following technical standards:
1)heat calorific power ≥9600kcal/kg;
2) kinematic viscosity under50ºC : ≤180cst;
3)mechanical impurities content: ≤0.3%;
4)water content: ≤3%;
C. The customer needs to purchase heavy oil according the oil quality standard, and require the oil supplier to provide oil quality essay or the correlative certificates. The using fuel must have well burning and pulverization capability. Forbid using kinds of causticity fuel or the products from unqualified oil producing factory. (All the burner damage or failure that caused by diesel or heavy oil quality problem, the correlative damaged spare parts and customer oneself should afford the repair expense.
3.The items of the customer equipped oneself
(1) the transformer, the cables between control-room and the transformer, the cables from transformer to conduction oil stove cabinet should be equipped by customers,supplier can provide the type and requirement of the cables.
(2)The customer should build the foundation according to the load requirements and the foundation drawing provided by the supplier. The customer can increase or deepen the foundation concrete or redesign the plant installation foundation and accessory establishments.
(3)The crane, power supply, electric welding equipment and other necessary instruments, material used for installation; the lube and grease for the equipment, the material used for foundation.
(4)The required material during debugging and producing, sand, stone material, asphalt, fuel oil, heat transmitting oil, dumping car, loader and operator etc. the necessary test and assay.
(5)Heat conduction oil should be equipped by the customer, its working temperature is 320ºC;
(6)The power supply system should adopt single loop three phase four wire type, 380V, 50HZ; if there is any special requirement, it should indicate in the contract.
(7)The other required equipment, instrument and work not mentioned in this configuration and specification.
(8)According to the actual situation, the customer should be responsible for the anti-thunder and earthing equipment himself.
IV. Special instruction
Because of the continuous creation and improvement on the technology and manufacturing technics, our company observes rights to change this configuration and specification before the customer ordering our plant without notifying such clients; Such clients are requested to consult our company before ordering. at the premise of guaranteeing the plant's funciton and capability, some specificaiton or power maybe changed in above specificaiton
with the continous improvement of the
product, and we will not infrom the clients
this change again.
2. The wet dust catcher matched with plant is just feasible for some area with low environment protection requirement. If there is high environment protection requirement, user must choose bag dust catcher system