There are many reasons & applications which require variation to standard screw conveyors. These are just some of the factors & conditions that will influence the design & construction of a screw conveyor:
- What material will you be conveying?
- What are the material characteristics?
- What is the bulk density of the material?
- What through put capacity is the screw to be designed for and at what housing loading?
- Where will the material be coming from?
- Is the screw to be a feeder or a conveyor?
- Is the screw horizontal, incline or vertical?
- Is the screw reversing?
- How long will the screw be, centerline of the inlet to the centerline of the discharge?
- Are intermediate hanger bearings for the screw acceptable?
- Housing construction information:
- Material of construction
- Dust tight construction
- Pressure tight construction (i.e. Will the housing have to hold pressure)
- Will the housing require a "code stamp"?
- Will the equipment be in wash down service?
- Hinged covers?
- Tubular or "u" trough housing?
- Type of shaft seals
- Food grade polish
- Welding requirements
- How is the housing supported, etc.
- What is the inlet size that we are connecting to and how many inlets are there?
- What is the discharge size that we are to connect to?
- Is the discharge a drop out, injector style or positive feed?
- Is there more than one discharge called out, and do they have slide gates?
- What style are the slide gates and how are they operated?
- Is the screw service continuos, 8 hr a day, 24 hr a day, batching, intermittent etc.?
- If there is more than one screw to a housing, how many drives?
- Is the screw to be portable?
- Will the screw be required to dewater or drain product?
- Will the screw be required to mix product while conveying?
- Will the product be abrasive?
- What material of construction in product contact?
- What type of welding in product contact?
- What finish or polish is required in product contact?
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