Bucket elevators are comprised of three main assemblies: head terminal, boot terminal, and intermediate sections complete with components.

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2 To obtain a more efficient elevator, we are furnishing industry standard chains, or using readily available multiple ply, allsynthetic carcass belting. We are also increasing speeds where applicable and eliminating unnecessary duplication of elevator sizes. The purpose of a bucket elevator is to lift material from one level to another and discharge it into a chute or container. This is accomplished by buckets that are attached to and lifted by a belt or chain arrangement. Bucket elevators are comprised of three main assemblies: head terminal, boot terminal, and intermediate sections complete with components. The head is the top section of the elevator and contains the head shaft, shaft seal, bearings, discharge chute, adjustable throat plate and drive assembly. The drive assembly could be either a shaft-mounted reducer or coupled gear motor reducer. Other drives can be used but these are the most common. The boot is the section anchored to the foundation that supports the rest of the structure. It contains the foot shaft, the feed chute or loading leg, the take-ups (internal gravity or screw type) and if necessary, a curved bottom plate. The sections between the head and boot are called the intermediate sections. The standard intermediate section is 12 ft. long. The required elevator height would be obtained by using a head, a boot, and the correct amount of intermediate sections, whether it be standard or odd lengths. Standard Elevators are designed to cover practically every need in elevating loose bulk material. For every material there is a choice of one or more types and sizes which will serve. Should there be any doubt in selecting the type elevator, we will gladly assist you in selecting the proper unit. Selection of a Standard Elevator insures lower cost and more prompt delivery as it is constructed of standard parts. Centrifugal discharge bucket elevators can have buckets mounted at intervals on chain or on belt. This type of elevator is used to handle bulk materials which can be picked up by spaced buckets as they pass under foot wheel and discharge by centrifugal force as the buckets pass over the head wheel. See Type CDC and CDB Elevators on pages 76, 77, 78, and 79. Continuous bucket elevators have buckets mounted continuously on chain or on belt. The material is directed to the buckets through a loading leg and is discharged over the face of the preceding bucket while passing around the headwheel. These elevators may be used to handle the same kinds of material as the centrifugal type, however, they are recommended especially for handling materials that are difficult to pick up in a boot, or friable materials. See Type CEC and CEB listed on pages 80, 81, 82, and 83. BUCKET ELEVATORS-75

3 (8)* (9) 76-BUCKET ELEVATORS

4 BUCKET ELEVATORS-77

5 (8) 78-BUCKET ELEVATORS

6 BUCKET ELEVATORS-79

7 (8)* (9) 80-BUCKET ELEVATORS

8 BUCKET ELEVATORS-81

9 (9) 82-BUCKET ELEVATORS

10 BUCKET ELEVATORS-83

11 84-BUCKET ELEVATORS

12 See Type SC Elevators on pages 88 and 89. See Type CM Elevators on pages 86 and 87. BUCKET ELEVATORS-85

13 (8) *Critical traction values are reached with this elevator when used with >75 PCF material at max. centers. In many cases sprockets are recommended. Consult the Engineering Dept. before applying this elevator. 86-BUCKET ELEVATORS

14 BUCKET ELEVATORS-87

15 - 88-BUCKET ELEVATORS

16 BUCKET ELEVATORS-89

17 Malleable Iron and Pearlitic Malleable Iron 90-BUCKET ELEVATORS

18 BUCKET ELEVATORS-91

19 Type D Continuous is used very extensively for handling broken stone, sand, gravel, coal, etc. The continuous bucket is a two-piece bucket the ends and back formed from one piece, with the bottom welded in place. Continuous welded construction is standard. Idler wheels are usually used to carry buckets and chain or belt, when elevators are inclined. Guide angles, carrying rollers and wearing blocks can be furnished, when desired, for inclined elevators with runways. All continuous buckets 26 inches and over are strengthened by the addition of a center brace. Type DH Continuous is used for handling materials that are sluggish in nature, such as light soda ash, etc. The steeper lip permits the material to slide off faster as it discharges onto the preceding bucket. A filler in the bottom prevents the clogging of material between the front and back plates. Continuous welded construction is standard. This bucket is also ideal for use where materials tend to level off in the bucket. Products such as cement or other light, fluffy, free-flowing materials can be carried higher in the bucket, increasing capacity. Salem Steel buckets are made in standard gauges for flour, grain, seeds, etc.; in medium gauges for coal, lime, cement, etc.; in heavy gauges for gravel, broken stone, etc.; and in extra heavy gauges for ashes, sand, coke and ores. Super-Capacity Steel elevator buckets are of the continuous type, designed for mounting between two strands of chain, permitting the bucket to extend back of the chain centerline. This design provides a much greater capacity and makes possible the handling of larger size lumps than ordinary continuous type buckets. Continuous welded construction is standard. These buckets are used in Super-Capacity Bucket Elevators. 92-BUCKET ELEVATORS

20 BUCKET ELEVATORS-93

21 94-BUCKET ELEVATORS

22 BUCKET ELEVATORS-95

23 96-BUCKET ELEVATORS

24 Unless otherwise specified, Malleable Iron Buckets Types A, AA, AA-RB, SC, and Salem Steel Buckets, when ordered Punched for Belt, will be punched according to the following tables. BUCKET ELEVATORS-97

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26 TO OUR CUSTOMERS: It is our objective to provide products that are safe. User safety is a primary consideration in product design; we maintain high quality manufacturing standards; and we take a leadership position in the promotion of safety in our industry. Safety Precautions In its usual application, a bucket elevator is enclosed within a housing or casing and is fundamentally a safe machine. Most accidents are usually the result of someone s carelessness or negligence. Certain precautions should be exercised to insure that the natural safety provisions of an elevator assembly are utilized. Bucket elevators are neither manufactured nor designed to handle materials hazardous to personnel. Such materials would include those which are explosive, flammable, toxic or in some way dangerous to people. The following should be considered as minimum provisions in order to avoid unsafe or hazardous conditions: 1. Use good, sound judgment when working around an elevator (walking on covers, guards, etc., poking at material in an operating elevator, or putting ones arms or legs inside elevator should be avoided). 2. Maintain periodic safety equipment operation/maintenance programs for personnel. 3. Maintain good and routine housekeeping practices, as well as adequate lighting about the elevator area. 4. Safety devices and controls must be provided by purchaser/owner as required by local, state, and federal codes, statutes, and laws. 5. All operating personnel should be kept aware of the location and operation of emergency controls. Frequent inspections of these controls as well as covers, guards, and other equipment are required to ensure proper working conditions and correct positioning. 6. Bucket elevators should not be operated unless the elevator housing completely encloses the elevator s moving elements and power transmission guards are in place. If the inspection door or housing is to be open, lock out the motor electrically in such a manner that it cannot be restarted by anyone (either in the same vicinity or from a remote location). 7. If, because of application, the elevator must require an open housing, separate the entire elevator from personnel areas by a fence and warning signs posted. 8. Open feed hoppers, spouts for shovel, end loader, or other loading means must incorporate a grating. If such conditions exist that a grating cannot be used, the exposed portion of the elevator must be guarded by a fence or warning signs posted. 9. All rotating equipment (drives, gears, couplings, etc.) must be guarded as required by applicable codes, statutes and laws. 10. Inlet and discharge openings shall be connected such that all moving parts of the elevator are completely enclosed. 11. Upon arrival, all equipment should be checked for damage. Damaged equipment should not be installed. 12. It is the responsibility of contractor, installer, owner, and user to supplement the materials furnished to result in a safe elevator installation and to comply with Williams-Steiger Occupational Safety and Health Act, state or local laws and ordinances, and the American National Standard Institute Safety Code. For bulk materials from fines to 8 lumps, capacities as much as 600 tons per hour and centers up to 100 feet, a Standard Bucket Elevator can be found in this catalog to meet most requirements. BUCKET ELEVATORS-99

27 BUCKET ELEVATOR INSTALLATION 1. Elevator boot section must be installed with top flanges as level as possible. Each casing section thereafter should be installed individually, leveled, and plumbed during installation. The completed casing assembly must be plumb without twist. Maximum out-of-plumb tolerance should not exceed ¼. 2. Lateral bracing should be within 4 feet of the head shaft and located at approximately 20 to 24 feet intervals on the casing at the casing joints. 3. Head and boot shafts must be level and parallel to each other. 4. Throat plate must be adjusted to within 1 inch or less to the bucket lip after initial run-in. 5. Stop bolts must be in place on the internal gravity takeups. Bolts should be located to allow approximately 2 inches of take-up upward movement. 6. Backstop must be installed after drive rotation is confirmed as being correct direction. On units with external backstops which have been factory mounted, direction of rotation must be determined before connecting drive to the head shaft. 7. Slap guides, if required, should be adjusted for approximately 1 inch clearance behind belt or chain. 8. Gear boxes and chain casings must be filled with lubricant, bearings greased and all assembly hardware tightened prior to start-up. 9. Listen for any unusual noise or banging during run-in. 100-BUCKET ELEVATORS

28 BUCKET ELEVATOR TROUBLESHOOTING Problem: Cause: Possible Solutions: Problem: Cause: Solution: Cause: Solution: Cause: Solution: Cause: Solution: Problem: Cause: Solution: Cause: Solution: Cause: Solution: Cause: Solution: Cause: Solution: Material falling down the up leg. Buckets are being overfilled causing dribble, as well as premature discharge. Open inspection door and use strobe light while elevator is running to see if buckets are being overfilled. Buckets should be near full but not overflowing. Check head pulley speed and capacity of piece of equipment feeding the leg. Material falling down the down leg. Obstruction in the head discharge. Check the head discharge for foreign materials; check for missing bucket; it can usually be found in the discharge transition. Throat plate is out of adjustment. Remove hood and adjust throat plate. Spouting too small, plugged, sharp bends, or too flat an angle for material to flow. Check spouting and clean or modify as needed. Pressure buildup in bins and spouting. Add roof vents to bins or bin or tank too full. Belt is not tracking in center of pulley and/or belt is not tracking in center of pulleys. Head or boot pulley improperly adjusted. Adjust take-up screws or shim as needed to level pulleys. Material build-up on pulleys. Check pulleys and clean if necessary. Worn bearings. Replace bearings if worn. Head pulley lagging is worn unevenly; belt will run to low side. Replace worn lagging. Casing is out of plumb or twisted. Check and correct. BUCKET ELEVATORS-101

29 BUCKET ELEVATOR TROUBLESHOOTING Problem: Excessive belt slippage or burning of belt. Cause: Head pulley lagging worn or loose. Solution: Replace with factory recommended lagging. Cause: Normal belt stretch (especially a new belt). Solution: Adjust belt tension using the boot take-up if possible. Problem: Possible Solutions: Problem: Possible Solutions: Elevator is being overloaded. Check volume of product being fed to the bucket elevator vs. rated capacity. Check density of the handled product. Check bucket speed for too slow or too fast. Drive motor too small. Power source to motor incorrect. Elevator is not getting capacity. Bucket speed too fast or too slow. Insufficient feed of product to the bucket elevator. Product density changed. Product is fluidized. Missing buckets. 102-BUCKET ELEVATORS

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