Polyurethane
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One of the most pressing problems of the elevator complex is the wiping and wear of gravity equipment.
Dry grain, passing through steel gravity feeds, quickly wipes the walls of pipes and transitions, which leads to grain crushing, spilling, and also that expensive repairs of these elements are required again and again, and, as a result, the entire elevator as a whole. This results in millions of dollars in losses for the elevator.

In practice, grain pipelines are wiped first, especially at the peak moment of the elevator operation. The wear of gravity equipment leads to an increase in grain breakage, technological downtime, an increase in the enterprise’s costs for receiving and cleaning grain.

To solve this problem ZEO “Sokol” offers polyurethane lining for gravity and transport equipment, as well as for any surfaces subject to abrasive wear.

The use of polyurethane for the repair of elevator equipment

Polyurethane is a polymer, a versatile material that, depending on its composition, can be viscous, liquid, high or low elastic. It consists of isocyanate and polyol, as well as auxiliary substances: catalysts, foaming agents and stabilizers. Currently, polyurethane is used almost everywhere: industry, food and construction industries and others.

Polyurethane lining is gaining popularity in the elevator industry. Due to its high wear resistance, polyurethane lining is used in a gravity system (grain lines, sectors (corner grain flows), separators, adders), as well as in places with intensive grain movement – elevator heads, elevator shoe receiving trays, any equipment surfaces subject to abrasion. Lining is a finishing of the working surface of the equipment with a material resistant to chemical, mechanical, thermal, physical stress. Lining with a polyurethane sheet is made using an adhesive, bolts or a combination method. The material well replaces milling products made of steel, rubber or polyethylene. Due to its long service life and cost, polyurethane becomes the optimal solution for solving problems with wiping equipment surfaces.

Equipment polyurethane lining has significant advantages:

  • increased durability of equipment;
  • increased chemical resistance of surfaces;
  • noise and vibration isolation;
  • mechanical strength, high creep resistance;
  • is tasteless and odorless;
  • undersized;
  • radiation resistance;
  • does not freeze;
  • dielectric properties;
  • resistance to deformation;
  • UV and microbial resistance.

The lining of elevators at ZEO “Sokol” with polyurethane with these advantages is more relevant than ever and economically profitable.
Specialists of ZEO “Sokol” have developed different methods of lining metal surfaces and grain pipes:

  • lining of grain pipes, sectors and equipment with ready-made polyurethane inserts. The advantage of this method is to save production time and speed of installation of inserts;
  • lining by gluing polyurethane sheets of various thicknesses and sizes on the worn out surface of the equipment. This is a fairly versatile method that makes it possible to lining non-standard equipment and “complex” surfaces;
  • Combined lining that combines the use of finished polyurethane products, gluing sheets or fixing with special bolts.

Gravity lining with polyurethane, due to its properties, will reduce grain losses due to mechanical damage during its passage through pipes. The high durability of polyurethane protects pipes from wear and corrosion.

Let’s outline the main advantages of repairing an elevator with polyurethane:

  • Polyurethane-lined pipes, elbows, surfaces last ten times longer than steel ones.
  • Maintenance and operating costs are significantly reduced, downtime is virtually eliminated.
  • There is an increase in profits due to a decrease in grain losses and an improvement in its grade.
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