Concrete Mixing Plant
The main use for concrete mixing station mixing concrete, also called concrete mixing station. Mainly by the mixing console, material weighing system, material handling systems, material storage and control systems and other five major systems and other ancillary facilities components. It is used to concentrate the joint means mixed concrete, precast concrete, also known as field. Because of its mechanization, high degree of automation, so productivity is high, and to ensure the quality of concrete and cement savings, commonly used in concrete large projects, long duration, the site focused on large and medium-sized water conservancy, electricity, bridges and other projects. With the development of municipal construction, centralized mixing, provides commercial concrete mixing station has a lot of advantages, which have developed rapidly, and for the promotion of Mobile concrete mixing plants china manufacturers Concrete Pumping achieve mixing, transport, pouring machine to create conditions for joint operations. Since the Aggregate Aggregate measuring and metering stations as compared to reduce the four intermediate links, and is a vertical cutting measure, saving measurement time, thus greatly improving the efficiency of production. Now the concrete mixing station mostly by international popular computer control Fast assembly modular structure, high performance mixers, Twin-controlled, noise, anti-dust pollution, environmental design, is a new generation of cement concrete mixing equipment, suitable for urban commercial ready-mixed concrete, bridge, water conservancy , airports, ports and other large infrastructure projects and concrete demand Great place. Concrete mixing station consists of mixing system, electrical control systems (mainframe computers, monitors, printers, communication cables, weighing instruments, bridge, etc.), to enhance the system components. Specifically:
Mixing console, material weighing system, material handling systems, material storage system, the control system of the five components of the system and other ancillary facilities composition; divided into the gravel to feed, powder feed, water and feed additives, mixing and transport storage of four parts. Mixing station can be divided into single station and double station, by definition, that is, each single station mixing station has a mixing console, dual-station has two mixing console, mixing console each corresponds to a discharge port, so dual-stirring station is a stand-alone mixing station production capacity of 2 times.
Mixer stirring their way into forced mixing and self-loading mixing. Compulsory mixer is mixing station at home and abroad mainstream use, it can be stirred liquidity, semi-rigid and rigid and other dry concrete. Since the fall mixing console main stirring fluidity concrete, rarely used in the 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.
Material weighing system is concrete mixing station affect the quality of concrete and concrete production cost of key components, divided into aggregate weighing, powder weighing and liquid weighing three parts. Under normal circumstances, 20 cubic meters per hour or less 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 were weighed and then put into the water, said liquid additive premixed infighting. In more than 50 cubic meters per hour, mixing station, said the use of various materials weighing separate ways, all have adopted electronic weighing scales and computer control. Aggregate weighing accuracy of ± 2%, weighing accuracy cement, powder, water and admixtures reached ± 1%.
Material Handling consists of three parts: Aggregate conveying: conveying mixing station has a hopper and belt conveyor transport 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 the temporary storage of mixing station, mixing station to increase productivity. Powder conveying: concrete available powder mainly cement, fly ash and slag. Powder conveying screw conveyor is used by general transport, large mixing floor there is the use of pneumatic conveying and the AFC. Advantages of the screw conveyor is simple in structure, low cost, and reliable. Liquid delivery: mainly refers to water and liquid additives, which are respectively delivered by the pump.
Substantially the same concrete materials portable concrete pump machine available for storage. Aggregate open dumps (and there are large-scale urban commercial concrete mixing station with a closed silo); powders with fully enclosed steel silo storage; admixture steel container.
Mixing station control system is the central nervous system equipment package. Control system according to the different requirements of users and the size of the mixing station and have different functions and preparation, construction of small mixing plant control system simpler site available under normal circumstances, but the system is relatively large mixing station complex.
According to work can be divided into:
Continuous (the market mostly intermittent mixing station project which process is:... It really is greater than the first with the production capacity mixer mixing raw materials, and then put into a blender stirring After stirring well before unloading into the trailer), and intermittent formula
Troubleshooting Air supply failure
(1) air compressor failure are: non-return valve is damaged, badly worn piston rings, intake valves become damaged and the air filter blockage. To determine the non-return valve is damaged, the compressor automatically shut down after just ten seconds, turn off the power, the hand plate moving big belt wheel, if you can more easily turn a week, then the check valve is not damaged ; on the contrary, the non-return valve has been damaged; Alternatively, you can switch the exhaust vent of the case following pressure from the automatic to be judged, generally should be automatically shut down after the compressor stops after ten seconds or so exhaust, If you have been in the exhaust when the compressor is started again until it stops, then the check valve is damaged, replace. When the compressor pressure rise slowly and accompanied by a string of oil phenomenon, show piston ring compressor badly worn and should be replaced. When the intake valve damaged or clogged air filter, air compressor pressure will also rise slowly (but no train oil phenomenon). Inspection can be put onto the palm of the air filter inlet, if there is heat outside the top, then the intake valve is damaged and must be replaced; if suction is small, usually caused by dirty air filter, Filters should be cleaned or replaced. (2) The valve failure are: pressure adjustment is not high, or pressure rise and slow. The pressure regulator is not high, often because of spring break or regulator diaphragm rupture caused to be renewed; pressure rise slowly, usually is caused because the filter is clogged, and should be removed for cleaning. (3) The line faults are: pipe joints leak, hose rupture condensate aggregation. Pipe joints leak and hose rupture can leak from the sound up to judge the site, should be repaired or replaced; if the accumulation of condensation water pipe, should be drained, and there is winter in the north of condensate and easy to knot Ice clogged air line. (4) Compressed air processing unit (triplets) faults are: oil and water separator fault, regulator and lubricator malfunctions. Water separator failure is divided into, Mobile concrete mixing plants for sale filter clogging, breakage, drain valve moving parts of the movable member is not flexible and so on. Work should always clean the filter, remove sewage within the oil and impurities. Regulator failure and "(2) The valve failure," above. Symptom lubricator are: not drip, oil deposited on the bottom of the cup of water, oil cup seal damage. When the mist does not drip, you should check the inlet gas flow rate is below the fog flow, leaks, fuel adjustment needle is blocked and the like; if deposited at the bottom of the oil cup of water, should be immediately removed; when When the seal is damaged, it should be replaced.