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The structural stability of intake and exhaust air towers is tested by structural analysis calculations. Depending on on-site conditions, the towers can be attached to the walls of the building with brackets for extra support. For freestanding intake and exhaust air towers anchor cages are usually used. The anchor cages, designed to be set in concrete, can be delivered prefabricated or, as in the photo here, as a double-flange construct with gusset plates, which are bolted to the existing substructure – Design and drawings “made by LBF Technik”!

Venturi nozzles or Venturi tubes are used in pipe systems, in which the rate of air flow must be continually measured and recorded. At the same time the components and the methods used for measuring must be suitable for the demanding industrial marginal conditions and the media with which they come in contact. The diameters used for the reductions, as well as, where the measurements are taken, conform to the diameters where the tubes connect in the system and with the amount of air that needs to be measured.

Rectifiers are used in pipe and duct systems to ensure an even flow into specific fitted components, such as heat exchangers. Without an appropriately uniform inflow, these components do not reach their level of efficiency and would, therefore, not fulfil their desired function. The assembly is manufactured out of lasered sheet metal and is put together by means of tongue and groove before it is welded. This ensures the exact fit of the pieces and minimizes the distortion of the welding.

Ground surfaces are an element of the design; matt blasted surfaces are a further possibility. Typical grit finishes for ground sheet metal are 120 grit, 180 grit and 240 grit. Ideally, the structures are designed with few or no weld seams, as they would interrupt the grinding pattern. Weld seams and rough sheet metal surfaces must be ground for hygienic reasons particularly in food and beverage technologies, usually using roughness values of Ra < 1,6 µm or Ra < 0,8µm.

Stainless steel custom design – weighing equipment – as per customer drawing. Very strict hygiene requirements apply in the food industry. These must be kept in mind when designing the construction, especially in regards to cleanability and disinfecting capabilities. An even and smooth surface must be achieved; sometimes a maximum roughness is defined. Inaccessible cavities and pores in the weld seam are absolutely not permitted. Pickled surfaces free of grease and completely sealed packaging round out this offer.

Stainless steel custom design as per customer drawing – in slaughter houses all components must be produced of stainless steel in order to meet hygiene requirements (cleaning, disinfecting). The drain structure is a multi-piece, welded or bolted, construction – base frame with mounted feet, drain and cover plates. High demands for surface quality (smoothness, appearance, evenness, pickling, grinding) apply and require the corresponding know-how of the industry.

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