Spiroflow's Spirostore flexible silos are tailor-made to accommodate bulk solids storage

Spiroflow Systems Inc. introduces a range of flexible silos that provide tailor-made solutions for quickly and efficiently storing bulk solids and ingredients in most industries. Unlike steel or aluminum silos, the ‘Spirostore’ Flexible Silos are made of durable, flexible polyester fabric, which is supported on a steel frame. The silos can store up to 7,000 cubic feet of dry bulk material and can support weights up to 90,000 pounds.

The flexible silos are manufactured like custom-made suits in terms of shape, size and type of polyester fabric selected. The silos are adapted to suit each customer’s specific requirements in terms of space available, product specifications and how the product should be discharged.

The silos are suitable for almost any indoor or other weatherproof location and can be connected to any type of Spiroflow flexible screw, aero mechanical, pneumatic and vacuum conveyor systems to fill and/or empty the stored material. The silos can accommodate a variety of materials, from trouble-free peas and polystyrene balls to interlocking materials such as baking flour and color pigments and clumping materials such as tea leaves, fiberglass and shredded wool.

Customizing a ‘Spirostore’ Flexible Silo involves determining how much space is available to erect the system, selecting the type of polyester fabric that meets space and product requirements and selecting from a multitude of possible variations in the outlet area for safe and efficient discharge of the material.

Unlike typical cylindrical silos, the ‘Spirostore’ Flexible Silos' square/rectangular dimensions help optimize space. This allows for easy placement in tight-fit areas and also allows assembly in locations normally deemed inaccessible. The silo adapts to space height requirements for added flexibility. The lightweight design of the silos also means that no complex foundations are required to support the system.

The main part of the ‘Spirostore’ Flexible Silos is the high strength, durable polyester fabric supported by a steel frame. The fabric is custom designed to meet the exact characteristics of the customer’s product and to maximize the storage capacity in the available space. A variety of other fabric options are available to meet product requirements. These include a breathable fabric that prevents condensation, air-tight versions, coated and uncoated versions, fabrics for use in food applications, electrically conducting versions for safe discharge of electrostatic charges and numerous others.

A multitude of variations for the outlet area are also available, including outlet diameter, cone angle and discharge aids. These needs are adapted to fit the requirements of the stored material. The flexibility of the polyester walls provide excellent discharge characteristics in that they assure almost total discharge of the material and provide optimum flow out characteristics.

Discharge aids are adapted to suit the shape of the existing bin. Discharge aids guarantee safe discharge of contents, are gentle to the stored material, are easily cleaned and maintained and use minimum power. They can be retrofitted to existing metal, wooden or concrete containers.

Four different types of discharge aids are available: SpiroSlip, SpiroAir, SpiroFlex and Super SpiroFlex. SpiroSlip ensures that outlet walls have the highest degree of smoothness; SpiroAir is used to re-introduce air into the bulk goods thus enhancing flow; SpiroFlex flexes the cone section; and SuperSpiroFlex with its large hoses constantly change the form and outlet angle of the silo cone.

The ‘Spirostore’ Flexible Silo has high rigidity values and load capabilities, with sevenfold safety for seams and fabric; a robust and durable construction for a long service life; and low operating and maintenance costs.

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