The structure, performance characteristics and selection principles of several mature vibrating screen panels in production and use are as follows:
1.All polyurethane vibrating screen panels
The all polyurethane vibrating screen panels is welded from the flat steel frame, of which the frame tooling is a design difficulty and belongs to a new type of fine separation product, gradually replacing the stainless steel sieve panels in recent years. The all polyurethane sieve plate is mainly applicable to places such as coal mine, iron mine, copper mine, gold mine, etc..
As the screen plate is used under very harsh conditions, which requires corrosion resistance, wear resistance and aging resistance, the screen slot is used.
The size needs to be small enough.
Disadvantages: inflexible change of product dimensions and high production cost. Selection principle: dehydration, disintermediation and desliming of various linear vibrating screens.
2.Polyurethane composite vibrating screen panels
This vibrating screen panels is a kind of roller resistance welding machine, which uses the resistance heat energy generated by the current passing through the it and weld it to a screen surface, and then carries out assembly processing to make it firm. The screen plate is made of stainless steel as the screen surface, and the frame and support bars are assembled and welded by Q235-A carbon steel flat iron as the material frame.
Advantages: narrow screen bar can be selected, with high opening rate, sound absorption and shock absorption, and it is not easy to run rough and easy to disassemble. Disadvantages: the screening rate is low, the holes are blocked, and the screen bars are easy to break and wear. Selection principle: dehydration, disintermediation and desliming of various linear vibrating screens and coal slime curved screen.
3.Welded slot vibrating screen panels
The welded seam screen plate is a kind of old screen panel with relatively mature technology. The welding of is carried out by roller resistance welding machine. Wedge shaped screen bars and convex shaped back bars with different sections and the same section are rolled and welded by resistance heat and current. It belongs to contact resistance welding process.
Advantages: high rigidity of working surface, narrow screen strip, high opening rate, flexible size change, easy processing and molding. Disadvantages: Selection principle: dehydration, disintermediation and desliming of various linear vibrating screens and coal slime curved screen.