Green Sand System-Screening

The permanent-magnetic separator produced by our factory is widely used in industries such as metallurgy, mining, power generation, combustion, building materials, ceramics, flour, casting, etc. It can be used to separate strong magnetic substances mixed in loose materials including iron nails, iron beans, cold iron, core bones, and sprues from the materials to protect process equipment and transportation equipment for crushing, screening, lifting, feeding, mixing, and shaping. It can also be used to recycle scrap iron and be used for magnetic raw materials such as powder metallurgy and selected iron oxide scales.

S Type Fine Hexagonal Screen Mechanical is used for fine screening of old sand in the sand processing department of the casting workshop. During working, the old sand enters the screen through the feeding port. The spiral blades in the feeding section and the rotation of the screen allow the materials to rise, fall, and move forward to achieve crushing and fine screening. At the same time, under the action of the ventilation and dust removal system, the old sand has a certain cooling effect, and the screened residue is discharged from the waste port.

This series of shakeout machines are suitable for manual molding, mechanized and semi-automatic molding and pouring of small and medium-sized casting molds in the casting workshop, and separating the sand from the mold box and castings. The separated sand pellets are further crushed and pass through the grid holes to fall onto the vibrating conveyor or belt conveyor. According to the weight of the workpiece and the size of the sand box, two or four units can be installed in parallel.

This machine is mainly used for shakeout cleaning of batch production of cast iron, cast copper, and cast aluminum parts, as well as for slow cooling of the workpieces. It is equipped with a dust removal sheet with a recommended dust removal capacity of 10000～12000m3/h. It can improve the cooling effect, capture the ash powder content in the low old sand, increase the wet compressive strength and air permeability of the molding sand, and thus improve the casting yield. Its overall performance is relatively good. The size of the cleaned workpiece should be less than 1/4～1/5 of the diameter of the inner drum.
The workpiece and sand entering the inner drum can quickly sieve the scattered sand at the inlet end. During the turnover of the casting, it not only rubs off the adhered particles, but also crushes and screens the unbroken particles. There is always a small amount of sand retained in the inner drum as a cushion layer for the workpiece, which solves the problem of collision and damage to thin-walled parts. On the entire length of the inner drum, the screened sand that enters between the inner and outer drums are guided by spiral blades and returns to the inlet end for discharging.