The basic composition of concrete mixing station
Concrete mixing station Workflow: After the mixer control system startup, enter the human - machine dialogue interface, system initialization process, including the recipe number, concrete grade, slump, producers amount. Sensors for each hopper, detection, output material empty or material full signal prompts the operator to determine whether to activate the metering gorica truck mounted concrete mixers prices hopper stirrer control program based on. Start sand, stone aggregate weighing belt motor fed into the hopper; open fly ash, cement silo butterfly valve, screw conveyor motor start transporting fly ash, cement to powder weighing hopper; open pump and additive pump to water and additives into the metering hopper. After the measurement meet the set requirements Doudou door open metering, mixing the ingredients into the blender started inside, to set time doors open mixer, concrete mixer entered. Concrete mixing station is mainly made of concrete mixer, material weighing system, material handling systems, material storage and control systems and other five major systems and other ancillary facilities components. 1, mixer: mixer stirring their way into compulsory mixer and self-loading mixer. Compulsory mixer is at home and abroad mainstream use concrete mixing station, which can be stirred liquidity, semi-rigid and rigid and other dry concrete. Self-loading concrete mixers main stirring liquidity, rarely used in mixing station. Compulsory mixer according to the spindle structure is divided into a planetary mixer, single horizontal shaft mixer and twin-shaft mixer. The integrated use of performance especially in the twin-shaft compulsory mixer is best. Our series of concrete mixing station in all twin-shaft compulsory mixer. 2, material weighing system: Material weighing system is affecting the quality of concrete and concrete production cost of key components, divided into aggregate weighing, weighing powder and liquid weighing three parts. Under normal circumstances, 35 cubic meters per hour or less concrete mixing station superposition weighing methods that aggregate (sand and stone) with a pair of scales, a scale with cement and fly ash, water and liquid additive respectively, said amount, and then put into the water, said liquid additive premixed infighting. In more than 50 cubic meters per hour of concrete mixing station, said the use of various materials weighing separate ways, all have adopted electronic weighing scales and computer control. Aggregate weighing accuracy ≤2%, cement, powder, water and additives weighing accuracy have reached ≤1%. 3, material handling systems: conveying material conveyed by aggregate, powder transportation, water and admixtures delivery of three parts. At present there are concrete mixing station aggregate transport conveyor hopper and belt conveyor in two ways. Advantages bucket elevator is a small footprint, simple structure. Advantages belt conveyor is transporting distance, high efficiency, low failure rate. Conveyor belt is mainly used to aggregate concrete mixing station temporary storage, thereby increasing productivity mixing station. Concrete is mainly used for cement powder, fly ash and slag. Mixing station currently widely used is the screw conveyor transport. Advantages of the screw conveyor is simple in structure, low cost, and reliable. Water and liquid additives are fed by pumps. 4, material storage systems: concrete mixing China Brand High quality mobile concrete batch plant station for storage of material used basically the same. Aggregate open dumps (and there are large-scale urban commercial concrete mixing station with a closed silo); powder cement warehouse storage; admixture steel container. 5, the control system: stirrer control station of the central nervous system of the entire device. Control system according to the different requirements of users and the size of the mixing station and have different functions and preparation, the construction site with a small concrete mixing station generally simpler control system, and the system is relatively large mixing station complex.
Stabilized soil mixing station Maintenance Maintenance and operation flow stabilizing soil mixing station:
I. Maintenance 1 reducer (filter) and electric drum performed in the instructions for use of the corresponding provisions. 2 stirrer, aggregate belt conveyor, belt feeding machine, the various ingredients, screw conveyor bearing at every application before starting the grease gun next to the oil lubrication 5-8 cup demolition every 200 hours of operation open examination, put new grease. Should smear a little butter before 3 mixer gear boot every day. 4 opened once a week each drive chain cover and the chain plus a small amount of grease-coated every 300 hours of work cleaning the chain once. 5 Weekly cleaning each belt and the belt tensioning screw feeder once, and apply new grease. 6 stirrer, poor working conditions, when the leaf pulp originally worn to less than 2/3 of the area, should be replaced leaf pulp. After 7 class work, the mixed material storage bin in the material drained, cut off the mains; open agitator cover, check the fastening arm and leaf stirred slurry was found loose nuts should be tightened immediately, in order to avoid leaf Pulp off accident; clean or remove the device throughout the material adhered to avoid hardening bonding material, affect the normal use of the device. When 8 reducer electric drum or leakage occurred, to promptly replace gaskets or seals, to ensure their adequate amount of oil. 9 mixer on the rear cover of the cylinder to be repaired damaged, avoid material flying out of wounding. Maintenance 10 electrical equipment section. Electrical equipment through regular maintenance, will reduce the occurrence of failure can discover hidden to prevent failure of the expansion. Routine maintenance of electrical equipment subject generally include: motors, electrical control cabinet (including contactors, relays and protective equipment) and electrical wiring. (1) dust and grease easily into the motor, new mini mobile concrete batch plant electrical control cabinets and electrical wiring, causing electrical insulation resistance is reduced, the contact is bad, cooling conditions worsen, or even cause a short circuit to ground. Therefore, always clean electrical cabinet dust and oil, with particular attention to remove iron and the like have conductive dust. (2) maintenance checks, should pay attention to electrical cabinet contacts, relays and all electrical terminals for loose, damaged wiring is shedding. (3) Check the electrical cabinet of a variety of electrical components and wires if there is the phenomenon of immersion oil or insulation damage and carry out the necessary treatment. (4) In order to ensure the normal operation of electrical equipment each protective device during maintenance, not allowed to freely change the thermal relay, setting the value of automatic air switch; replace melt, must be required option can not be too large or too small. (5) to strengthen the high temperatures, rainy, cold and other seasonal maintenance and inspection of electrical equipment. (6) regular small motor repair and the repair inspection. (7) Note Check the electrical equipment of the ground or zero must be reliable. (8) for maintenance, you must pay attention to safety.
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