Machine-made sand powder separator is widely used in sand and gravel plants,construction sites,hydropower stations and concrete dam civil engineering,electric poles and large prefabricated pipelines.Casting net sand,oil well backfill pressure sand,glass quartz sand and other production enterprises.
Product features
1.Sorting principle
Breaking through the traditional process principle of water-washed sand and gravel sorting,the V-type separator and the plane eddy current cage separator are combined to greatly increase the system processing capacity.As the V-type separator is a separator,it has no rotating parts and is made of wear-resistant steel plates.It can classify a large amount of original sand once,and particles larger than a certain particle size directly enter the finished product conveyor belt for transportation.The fine powder in the original sand enters the machine-made sand powder separator with the air flow for secondary sorting.Particles smaller than 0.075mm enter the rotor and are collected by the cyclone dust collector,while some particles larger than 0.075mm fall along the gap between the guide blades and the cage rotor and enter the medium and coarse powder cone for collection.Some particles larger than 0.075mm enter the dynamic separator,and the wind speed decreases due to the change of cross section,and enter the coarse powder collection cone under the action of gravity.Sand and gravel with different modulus requirements can be configured according to user needs.
2.Higher classification accuracy
The powder separator adopts the"eddy current rectifier"with national certificate.The airflow in the rectifier only rises but does not rotate relative to the rotor,and the driving power and system wear are significantly reduced.The material is repeatedly cleaned in the sorting area,and the classification accuracy is higher and more accurate.
3.Easy operation
The powder separator adopts stepless speed regulation of the frequency converter,which is convenient,sensitive,reliable and has a wide adjustment range.
4.High classification efficiency
According to the physical and chemical properties of sand and gravel,the lifting area of​​the classification area is enlarged to disperse the material and ensure the classification efficiency.
5.Wear-resistant design and maintenance-free
The main components of the powder selector include:disperser,fine material collector,side wind adjustment plate,main wind adjustment plate,multi-channel distributor and other main parts.It is made of imported wear-resistant steel plate,wear-resistant ceramic and boiler steel,which effectively improves the service life.The whole machine has been dynamically balanced and runs smoothly in the full speed range.
6.The system uses double interlock air valves and internal circulation air to effectively reduce system leakage and reduce dust emission pollution during operation.
Technical features
Under working conditions,the speed regulating motor rotates with the drive shaft through the drive device,and the sand and gravel enter the sorting chamber after being processed by the static V-selection device located at the bottom of the sorting chamber,and then falls on the distributor through the channel between the upper and lower cones of the medium and coarse sand collection cone.The distributor rotates with the vertical drive shaft,and the sand and gravel are evenly dispersed to the surroundings under the action of inertial centrifugal force.The dispersed stone is under the action of the high-speed airflow of the circulating fan entering the sorting chamber,and the coarse and heavy particles in the stone are thrown to the inner wall of the sorting chamber under the action of inertial centrifugal force.After the collision,the sand and gravel particles lose kinetic energy and slide down along the wall,falling into the coarse sand collection cone.The remaining sand and gravel particles are rolled up by the rotating rising airflow and pass through the rotating large wind blades.Another part of the coarse sand particles are thrown to the inner wall of the sorting chamber,and after the collision,they lose kinetic energy and slide down along the wall,falling into the coarse sand collector.
After the medium-coarse sand and fine sand pass through the large wind blades,they continue to rise through the vertical guide blades under the action of the rising airflow and enter the secondary sorting area.Under the action of the strong and stable plane vortex formed by the rotating cage rotor,the sand-containing airflow causes the medium-coarse sand to be thrown to the vertical guide blades under the action of centrifugal force and lose kinetic energy,fall into the medium-coarse sand collection cone,and be discharged into the finished product warehouse through the medium-coarse sand pipe.Unqualified fine sand and gravel pass through the cage rotor into its interior,enter the low-resistance cyclone dust collector with the circulating air,and then slide into the fine sand collection cone.
Compared with the traditional powder separator,the machine-made sand powder separator has the following outstanding advantages:
1.It breaks through the original concept of water washing and sorting,and changes the water washing and sorting to direct sorting of dry materials.
2.Divide the original sand into three parts,namely,coarse sand(d>1.25mm),fine sand(75um<d<1.25mm),and stone powder.The coarse sand returns to the crusher,and the medium-coarse sand goes directly into the finished product warehouse.The fine sand powder goes into the fine sand warehouse.
3.Compared with other types of powder selectors,the machine-made sand powder selector has a much higher output,so it is more suitable for large-scale production.The reasonable structure allows the sorting air volume,output and feed to vary in a large range without affecting the sorting efficiency,and its classification performance is very stable.
4.Professional classification principle.Combining multiple sorting principles,the entire flow field is optimized and designed using aerodynamic analysis methods,which significantly reduces the resistance of the equipment and increases the sorting efficiency.Energy saving and consumption reduction are very obvious.The rotor of the separator is equipped with a vortex rectifier with a national certificate.The airflow in the rotor only rises but does not rotate relative to the rotor.The driving force on the rotor is reduced due to the momentum of the airflow entering the rotor,which saves driving power and reduces wear.The sand and gravel are sorted in two sorting areas,and the sorting accuracy is higher and more accurate.
5.The main shaft of the powder selector adopts stepless speed regulation.The quality adjustment is convenient,sensitive and reliable,and the adjustment range is wide.
6.The space range of the sorting area and the lifting area has been re-optimized and designed,and the main space is fully utilized to increase the material-gas ratio and improve the sorting efficiency.
7.The vulnerable and wear-resistant parts of the powder selector,such as the distributor,the snail horn of the cyclone,the air guide blades and the rotor blades,are made of wear-resistant materials or treated with anti-wear technology,and their wear rate is extremely low.Extend its service life.
8.The lower bearing seal of the main shaft adopts a new design scheme,which effectively solves the two major problems of bearing ash ingress and lubricating oil leakage,and effectively extends the service life of the bearing.
9.When setting the foundation of the powder selector,the mechanical vibration reduction principle is adopted to make the resonance frequency of the foundation of the selector not close to the natural frequency of the selector,which fundamentally solves the resonance problem of the selector that has long troubled the manufacturer.
10.The coarse sand pipe,the medium-coarse masonry pipe and the fine masonry pipe all use double interlocking air valves,which greatly reduces the system leakage rate and overcomes the defect of large dust during the operation of the previous selector.