Hopper Silos

SIMEZA offers a wide range of possibilities in Hopper Silos

HOPPER SILOS

SIMEZA corrugated steel sheet Hopper Bottom Silos are designed for agricultural and industrial plants such as drying plants, seed processing plants, storage plants, daily bins, dosing bins, bulk outload bins, industrial plants continuously fed with cereals such as flour mills, feed mills, rice mills, oil mills, and biofuel facilities.

They are used for the short/medium term storage of cereals, maize, soya, paddy, oil seeds and any other granulated free flowing materials.

They can be designed according to either ASAE/ANSI American or Euro-Code European norms as per tender specifications or client choice and are manufactured to withstand stress caused by continuous use, extreme temperatures, high winds, heavy snow and seismic loads. They also offer greater resistance to corrosion through thicker galvanization on the steel sheets.

SIMEZA conical base silos cover a wide range of models from 2.5 to 12.2 metres in diameter and from 8 to 2,500 m3 individual capacity.

Innovation and advantages

  • Simplified and more reliable static calculation.
  • Easier foundation with slab.
  • Use of crane or framework not needed.
  • Assembly always from the ground.
  • Availability of space under the silo.
  • Electrical equipment installed in a closed space.

DETAILS

ROOF
  1. 30° conical shape.
  2. The roof panels are manufactured with S-350GD - Z 600 high tensile steel sheets or can be pre-painted galvanized steel sheet upon request.
  3. The static calculation is performed by the finite element method for:
    • Each individual local wind, snow and seismic load.
    • Additional heavy duty loads of the catwalks on the roof.
    • Temperature probe loads.
  4. The roof is a self-supporting structure.
  5. Roof panels are assembled with galvanized steel bolts and plastic seal washers. Stainless steel bolts can be delivered upon request.
  6. The roof is equipped with:
    • A) d = 500 mm or d = 600 mm inlet flange.
    • B) Air vents allowing for the circulation of the existing air in the silos with the incoming grain.
    • C) Inspection hatch, located at the silo eave which allows for:
      • Visual control of the stored product.
      • Taking samples.
      • Maintenance of the maximum level indicator.
  7. This inspection hatch is equipped with a rest platform which can be reached either by a ladder fixed on the silo wall starting from ground level or by a drop down ladder from the catwalk fixed to a relevant post.
CYLINDER
  1. The wall panels are manufactured with S-350GD - Z600 hot dip Sendzimir galvanized high tensile steel sheets which can be painted upon request.
  2. The static calculation is performed using an in-house developed software for each individual grain density as well as any local wind, snow and seismic loads.
  3. Wall sheet:
    • A) Shape is 104 mm corrugation which reduces friction and product residues.
    • B) Assembly by 2 or 3 rows of bolts according to the thickness and acting loads.
  4. Vertical stiffener:
    • A) Standard omega section and junction.
    • B) Reinforced wide omega section and junction.
  5. Wind rings, if necessary, according to the static calculation.
HOPPER
  1. 45° or 60º with d = 400 mm standard outlet flange and from 750 mm to 1400 mm outlet height.










SUPPORTING STRUCTURE
  1. STANDARD SOLUTION (“with skirt”), consisting of:
    • A) Self-supporting inner hopper (for diameters up to 5.30 meters).
    • B) Inner hopper with support structure for diameters from 6.10 to 12.20 meters.
    • C) Inner hopper and support structure manufactured with S-350GD steel, hidden by the silo wall itself.
    • D) Extended cylindrical wall of the silo itself, reinforced with double stiffeners.
    • E) Quick assembly, without crane.
INSPECTION DOORS

Hopper silos are equipped with a flanged access door located in the hopper which can be reached by a short mobile ladder or directly from the ground level.










BOLTING
  1. Roof panels are assembled with galvanized steel bolts and plastic seal washers. Stainless steel bolts can be delivered upon request.
  2. Wall sheets are assembled by high tensile steel 8.8 or 10.9 quality hot dip galvanized bolts with double steel and plastic seal washers.
  3. Wall sheets are assembled by 2 or 3 rows of bolts, according to the thickness and acting loads.