The stirring arm is made of alloy cast steel with long service life; Aggregate cumulative measurement, powder and asphalt are measured separately to ensure the accuracy and reliability of ingredients; Hot aggregate and mineral powder adopt bucket double-chain hoist with automatic tensioning device. The combustion system is equipped with: light oil/heavy oil/coal burner. Dust removal system includes gravity dust removal, cyclone dust removal, water dust removal and bag dust removal; The finished silo has various combinations of side loading and bottom loading (30, 60, 80, 100, 120. 150, 200 tons) for users to choose from.
HLB5000 environmental protection asphalt mixture mixing equipment is a new product developed on the basis of introducing similar foreign products. Its key components, burners and sensors, are imported equipment. The control system adopts Siemens PLC centralized control, professional control computer and dynamic display of the whole production process. The mixing cylinder liner, mixing arm and blades are made of special materials, with long service life. Advanced electronic scales are used for aggregate, mineral powder and asphalt to ensure the accuracy and reliability of batching. Hot aggregate and mineral powder are lifted by bucket elevator with automatic tensioning device. Combustion system: 1) heavy oil combustion system: automatic ignition and automatic temperature control; 2) Diesel combustion system: automatic ignition and automatic temperature control. The first stage dust removal system adopts gravity dust removal.
LBY series mobile asphalt mixing station is suitable for special pavement operations such as airport runways, docks, roads and bridges and ordinary pavement construction. And rush to repair and rush to build. The whole set of equipment is compact in structure, and the whole set of equipment for asphalt concrete production is integrated on several trailer units; The man-machine interface is concise, stable and reliable, and suitable for all kinds of harsh environments. The design of the whole machine meets the requirements of environmental protection and has excellent maneuverability. Adopt double horizontal axis forced mixer, which has strong continuous working ability and uniform and fast mixing, and is especially convenient for pavement reconstruction and maintenance.
First, the batching system
Modular structure, reasonable layout and convenient disassembly.
There are three standards for underground bucket: 5 cubic meters, 8 cubic meters, 15 cubic meters. The top of each silo is equipped with an isolation grid to prevent the entry of oversized aggregate.
Belt conveyor is equipped with shaft-mounted deceleration motor, which has compact and simple structure and low failure rate; There is a shortage alarm device at the outlet.
All conveyor belts adopt endless belts without joints, which have stable operation, low noise and long service life.
An isolation screen is arranged at the entrance of the feeding conveyor, which can reject large stones into the drying drum, effectively reducing the waste of the system and saving various costs.
Both aggregate conveyor and feeding conveyor adopt shaft-mounted reducer, which has simple structure and extremely low maintenance rate.
Second, the drying system
Internal structure of drying drum
The scientific and reasonable design of the lifting plate makes the material in the best state, and the good end seal, the outer wall insulation material of the cylinder and the stainless steel plate insulation layer effectively improve the thermal efficiency of the drying cylinder.
The drying drum is connected with a supporting wheel made of high-temperature resistant nylon (or steel wheel) by a high-performance reduction motor through a universal joint coupling, and the drying drum runs by friction, and the elastic expansion washer can reduce the transmission wear of the drying drum, reduce the noise and prolong the service life;
Imported oil burner
Select high-performance burners of internationally renowned brands. This product is manufactured by the latest patented flame control technology in the world, and can burn various brands of heavy oil and residual oil in any refinery in China. The automatic switching and separate control of air-fuel ratio of light and heavy fuel are realized. The advanced oil supply system enables heavy oil and residual oil to be well atomized and fully burned, and the fuel saving rate is 7~ 15%. The flame adjustment ratio can reach 10: 1.
LCD monitors and modifies system parameters, as well as Chinese fault alarm information. All working parts are controlled and executed by PLC, and the operation is convenient and simple. Compared with the traditional burner, the burner has the following remarkable characteristics: advanced technology, reasonable structure, high degree of intelligence, high safety and high cost performance; Low energy consumption, low wear, low noise and low pollution.
Three, hot aggregate lifting, screening, storage, weighing system
Hot aggregate hoist
The hot aggregate hoist is a chain-type high-efficiency hoist: the casing roller chain used in the supporting project adopts alloy structural steel, which has the advantages of flexible and stable operation, low friction resistance, low noise, low failure rate and long service life; At the same time, it is equipped with automatic chain tensioner and high-performance electromagnetic braking deceleration motor to prevent reverse rotation and ensure safe, reliable and efficient hot stripping.
vibrating screen
Equipped with high-efficiency vibrating screen: the screen is fixed by quick hook device, so it is quick and convenient to replace the screen. The whole screen body is connected by locking bolts, which has good integrity and durability. The vibrating screen is also equipped with a motor reverse braking device, which can eliminate the jumping and irregular movement when the vibrating screen is about to stop but has not stopped. The whole screen body is enclosed in a dust cover, and the dust cover is provided with a feed port and a dust removal port, which is an ideal environmental protection device.
Hot aggregate bin and continuous level gauge
The equipment is equipped with a large-capacity hot bin, which can effectively ensure the continuity of finished product discharge; The insulation layer is wrapped outside the silo to reduce heat loss, save fuel consumption and reduce manufacturing cost; Each hot bin is equipped with a continuous material level meter to continuously display the change of material level; The aggregate bin is also equipped with a thermal resistance thermometer for measuring the temperature of the aggregate in the hot bin; Each bin can realize accurate measurement of aggregate; The material gate adopts a unique structural design to prevent jamming; The hot aggregate bin is provided with an overflow pipe and a waste pipe.
The equipment is equipped with three metering hoppers:
Gravel weighing funnel
The unique eccentric feed inlet structure design makes the feed inlet open flexibly and stably, eliminating the jamming phenomenon; The increase of pressure relief channel eliminates the adverse effect of floating scale.
Mineral powder metering hopper
Mineral powder metering hopper: equipped with pneumatic arch-breaking device, which can feed stably and quickly; The special screw conveyor for ore separation makes the mineral powder enter the mixer quickly and evenly, which effectively ensures the quality of the finished product. Adopt frequency conversion and speed regulation metering screw conveyor (small diameter, high speed) to ensure high powder metering accuracy.
Asphalt metering hopper
Asphalt metering hopper: heated by heat-conducting oil, insulated by insulation layer, covered with stainless steel plate, beautiful and energy-saving; The unique design reduces the amount of residual asphalt, and the cooperation of electromagnetic brake asphalt pump and one-way valve improves the metering accuracy; Asphalt spraying adopts the form of asphalt pump spraying, which can evenly cover the surface of aggregate in the mixing tank, which is helpful to improve the quality of finished products and reduce mixing time; Electronic control over-scale detection device to prevent scale overflow; On the basis of ensuring the measurement accuracy, the asphalt-aggregate ratio is strictly controlled in the floating measurement of asphalt reduction.
Weighing module
Weighing hopper adopts internationally famous brand weighing module, equipped with high precision and high sensitivity resistance strain sensor, and fully sealed. It can adapt to any harsh environmental conditions without affecting the accuracy, and has strong reliability: the weighing module is a whole module structure, which can eliminate the influence of horizontal force and effectively improve the measurement accuracy of the whole scale.
Fourthly, hybrid system.
blender
The whole machine adopts square frame structure, heavy design, stable operation, safety and reliability, and elegant appearance.
The liner and blade slurry head are made of high chromium white wear-resistant cast iron, which has long service life.
The material gate adopts an inclined discharge gate operated by two cylinders, which has short discharge time, good sealing effect, flexible opening and closing, and eliminates the phenomenon of jamming.
The filling rate is less than 60%, which can fully mix stone and asphalt and shorten the mixing time.
Reliable lubrication system: 380V high-power motor is used in the application of automatic lubrication system, which can quickly pump lubricating oil to all lubricating points, and the computer can set a program to quantitatively pump lubricating oil to all lubricating points on time; As a backup system, manual lubrication can complete the lubrication of all components in time and reliably.
Verb (abbreviation of verb) Heat transfer oil heating and asphalt supply system
The equipment adopts fully automatic horizontal heat transfer oil heating system (modular transportation and installation). The burner is an imported brand. It has the functions of automatic ignition and automatic monitoring of working state, and the burner can work under big fire or small fire according to the temperature of heat transfer oil.
Six, dust removal system
Gravity dust collector, the dust removal effect of the dust collector can reach about 80%, and the dust removal object is more than 75 μ m. All the dust in the first stage of dust removal is fine aggregate particles, and all of them are sent to the hot aggregate elevator by screw conveyor for recycling.
Seven, powder supply and dust recovery system
The dust recovered after dust removal is sent to the dust recovery tank by the bucket elevator of the screw conveyor. When the recovered powder is not used, it can be discharged by an external screw conveyor, and the end of the discharged powder is equipped with a well-designed spray dust-proof screw conveyor, which can wet the powder and prevent the dust from flying.
The whole main building is in a negative pressure sealing state, which prevents leakage and improves the environmental protection performance of the whole equipment.
The powder tank is equipped with an efficient material level meter, the top of the tank is equipped with a bag dust collector, and the cones at the lower parts of the two tanks are equipped with air hammers or pneumatic arch-breaking pads to prevent the cones from arching; Overpressure protection system is installed at the top of the new powder tank and recovery tank to prevent the tank top from collapsing. The stone powder in the new powder tank and the dust in the recovery tank can be transported to the powder weighing hopper in proportion by the screw conveyor.
Eight, gas control system
The gas path control system of this equipment is equipped with a well-known imported or domestic air compressor, which works safely and reliably. Adopt imported solenoid valve. The integrated installation of air valve system avoids the soaking of dust and rain and ensures long-term operation.
Nine, electrical control system and central control room
The control system adopts computer control, screen display, keyboard input, Siemens S7 300 high-performance programmable controller, PROFINET bus control technology, distributed I/O, industrial Ethernet transmission and computer dual-screen control technology. Reliable working performance, convenient operation, intuitive display, high degree of automation, spacious and bright central control room, split air conditioning and lifting lighting, making the environment for operators and staff comfortable and beautiful.