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SCREW CONVEYORS - M.C.Schroeder

CATALOG 2006 All rights reserved WAMGROUPISSUEADATE OF LATEST DATECIRCULATION1002002 Engineering Guide & Parts CatalogueSCREW CONVEYORSThe history of the SCREW conveyor -one of man s simplestand most efficient tools for the conveying of bulk materials -can be traced back more than 2,000 years to ancient Greeceand the development of the "Archimedean SCREW ."About 240 , Archimedes, a renowned Greek math-ematician and inventor, perfected a spiraled tubular de-vice for removing water from the hold of a large ship.

SCREW CONVEYORS WAM, Inc. SCREW CONVEYORS ARE DESIGNED AND FABRICATED TO ESTABLISHED INDUSTRY STANDARDS Equipment for Processing & Transporting all Bulk Materials

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Transcription of SCREW CONVEYORS - M.C.Schroeder

1 CATALOG 2006 All rights reserved WAMGROUPISSUEADATE OF LATEST DATECIRCULATION1002002 Engineering Guide & Parts CatalogueSCREW CONVEYORSThe history of the SCREW conveyor -one of man s simplestand most efficient tools for the conveying of bulk materials -can be traced back more than 2,000 years to ancient Greeceand the development of the "Archimedean SCREW ."About 240 , Archimedes, a renowned Greek math-ematician and inventor, perfected a spiraled tubular de-vice for removing water from the hold of a large ship.

2 Indoing so, he became the first man to put the SCREW con-veyor principle into practical the SCREW conveyor plays an important role in awide variety of industries. Because it is compact, versatileand economical, it has become one of the most usefulmechanisms for the transport and distribution of bulk from its utility as a means of moving materials,the SCREW conveyor , with certain modifications and/or varia-tions in mechanical arrangement, may also be used toperform, a number of other important can be used to mix, blend or agitate.

3 In applicationswhere close control of material flow is critical, the screwconveyor may be used as a highly accurate metering de-vice. Operating in a jacketed housing it may be used as aheating or cooling device. Because it can be effectivelysealed, it is extremely valuable in applications where dustor fumes must be confined inside the conveyor or wheremoisture or contaminants must be kept the company was first established, WAM, Inc.,has specialized in the design and manufacture of screwconveyor equipment and has built its reputation in this matter what your requirements, you may be assuredthat WAM, Inc.

4 , is always a dependable source for qualityand reliability in SCREW conveyor equipment and CONVEYORSWAM, Inc. SCREW CONVEYORS ARE DESIGNED AND FABRICATED TOESTABLISHED INDUSTRY STANDARDSE quipment for Processing &Transporting all Bulk MaterialsCATALOG 2006 SCREW CONVEYORS4 The following section is designed to present the necessary engineering infor-mation to properly design and lay out most conveyor applications. The informa-tion has been compiled from many years of experience in successful design andapplication and from industry hope that the information presented will be helpful to you in determiningthe type and size of SCREW conveyor that will best suit your SCREW conveyor Design Procedure on the following page gives tenstep-by-step instructions for properly designing a SCREW conveyor .

5 These steps,plus the many following tables and formulas throughout the engineering sectionwill enable you to design and detail SCREW CONVEYORS for most your requirements present any complications not covered in this section, weinvite you to contact our Engineering Department for recommendations and OF CONTENTSENGINEERING Material Material Characteristics Table of conveyor Size and Horizontal SCREW CONVEYORS Table Size Factor Ratings of conveyor SCREW SCREW and Hand of 1011 2122232425262728293031323334 COMPONENT SECTIONPageNumerical Designation System for Standard and Design & Installation Data Design & Installation Data Bolt Design & Installation Data

6 Industry SCREW conveyor weld and and safety 3738 4344 4647 5455 5758596061 6970 7172 7778 808182 838485 8687 8889 9091 9293949596 CATALOG 2006 SCREW CONVEYORS5 DESIGNSCREW conveyor DESIGN PROCEDURESTEP 1 Establish Known Factors1. Type of material to be Maximum size of hard Percentage of hard lumps by Capacity required, in Capacity required, in Distance material to be Any additional factors that may affect conveyor or 2 Classify MaterialClassify the material according to the system shown in Table 1-1.

7 Or, if thematerial is included in Table 1-2, use the classification shown in Table 3 Determine Design CapacityDetermine design capacity as described on pages 22 - 23 STEP 4 Determine Diameter and SpeedUsing known capacity required in , material classification, and %trough loading (Table 1-2) determine diameter and speed from Table 5 Check Minimum SCREW Diameter for Lump SizeLimitationsUsing known SCREW diameter and percentage of hard lumps, checkminimum SCREW diameter from Table 6 Determine Type of BearingsFrom Table 1-2, determine hanger bearing group for the material to beconveyed.

8 Locate this bearing group in Table 1-11 for the type of 7 Determine HorsepowerFrom Table 1-2, determine Horsepower Factor Fm for the material to beconveyed. Refer to Page 29 and calculate horsepower by the 8 Check Torsional and/or Horsepower ratings ofConveyor ComponentsUsing required horsepower from step 7 refer to page 30 to checkcapacities of conveyor pipe, shafts and coupling 9 Select ComponentsSelect basic components from Tables 1-8, 1-9, and 1-10 in accordancewith Component Group listed in Table 1-2 for the material to be balance of components from the Components Section 10 conveyor LayoutsRefer to pages 85-86 for typical layout 2006 SCREW CONVEYORS6A study has been made to define the characteristics of bulk materials in terms which are readily recognized.

9 These characteristics and termsare indicated in the Material Classification Code Chart (Table 1-1). It can be seen that different materials having the same classification codenumber may be handled with SCREW CONVEYORS having the same specifications. Also, should it be desired to handle a material not given in theMaterial Table, in some cases it is possible to make at least a preliminary selection of material code number by comparing the material withsimilar listed should be borne in mind that because of the peculiar action of a conveyor SCREW in moving bulk materials, the condition of the material intransit may be quite different from the condition at , first of all, are classified according to particle size.

10 It is important to have a screen analysis made of the material, if at all example if a material is said to consist of inch and under, it may be similar to granules of plastic. Or it may have only 10% of particle size,with 90% fines grading to micron sizes. Some materials may require use of cover gaskets and/or seals; others may not, depending upon materials must be checked against the Lump Size Table (Table 1-7). Very often larger SCREW CONVEYORS must be used solely toaccommodate the lumps than otherwise would be required from a standpoint of normal , stringy, and interlocking materials that mat or cling together require special consideration.


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