Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Conveyors bucket elevators

Materials-handling equipment is logically divided into continuous and batch types, and into classes for the handling of liquids, solids, and gases. Liquids and gases are handled by means of pumps and blowers in pipes, flumes, and ducts and in containers such as drums, cylinders, and tank cars. Solids may be handled by conveyors, bucket elevators, chutes, lift trucks, and pneumatic systems. The selection of materials-handling equipment depends upon the cost and the work to be done. Factors that must be considered in selecting such equipment include ... [Pg.101]

Although waste is considered as a material, in fact it is a mixture of materials, each one having its own handling characteristics, somehmes entirely different than those of the other components. There are several handling systems used to convey solid waste. The most widely used are steel plate, belt and vibrating conveyors, bucket elevators, and pneumatic systems. [Pg.345]

Belt conveyors, bucket elevators, and screw feeders,... [Pg.23]

Advice shall be given whether the material (product) can be moved in the premises by belt conveyors/bucket elevators or screw feeders, etc. It will depend on... [Pg.30]

The major uses of the four types of chain fisted above are in drives (power transmission), conveyors, bucket elevators, and tension hnkages. Each of these applications is discussed in detail in subsequent chapters. Some standard chains are designed for use in only one of these application. However, some chains are designed so that they can be adapted to more than one use. [Pg.20]

Many different types of engineering steel chains are used in a wide variety of apphcations. Most engineering steel chains are used in conveyors, bucket elevators, and tension linkages. Only a few are used in drives. Space does not permit a discussion of all the different types of engineCTing steel chains mentioned in chapter 2. Only straight sidebar chains, with and without rollers, for conveyors and bucket elevators, and offset sidebar chains for drives will be discussed. Welded steel chains and block and bar chains are beyond the scope of this chapt. ... [Pg.71]

LUBRICATION OF CONVEYOR, BUCKET ELEVATOR, AND TENSION LINKAGE CHAINS... [Pg.351]

It is often difQcult to lubricate chains used in conveyors, bucket elevators, and tension linkages. They normally cannot be enclosed in a chain casing or protective housing. They have to work in the open and they are exposed to spillage of the product being carried. [Pg.351]

Many hundreds of years passed before the need arose to handle other than water in a continuous mechanical manner. The demand to process large quantities of grain from the newly exploited vast American plains led to the mechanisation of flour mills, an early type of which is thought to have been made by Evans around 1742. His grandson, Oliver Evans, built a fully mechanised mill in 1785 that included belt conveyors, bucket elevators and a... [Pg.197]

Cmshed stone is conveyed by a mbber-belt conveyor and bucket elevator. Fine stone and dust are conveyed by enclosed screw conveyors, air slides, or pneumatic air systems into storage bins and tank tmcks for shipment. For screening, changeable vibratory screens predominate for all sizes from 23 cm to 0.074 mm (200 mesh). Most stone is stored uncovered on the ground in conical stockpiles, suppHed by radial belt conveyors. Such a conveyor can maintain four stockpiles of different sized stone. Large commercial plants typically stockpile stone in 10 sizes ... [Pg.170]

Continuous Percolators Coarse sohds are also leached by percolation in moving-bed equipment, including single-deck and nmlti-deck rake classifiers, bucket-elevator contactors, and horizontal-belt conveyors. [Pg.1673]

Lift can usually be handled most economically by vertical or inclined bucket elevators, but when lift and horizontal travel are combined, other conveyors should be considered. Conveyors that combine several directions of travel in a single unit are generally more expensive, but since they require only a single drive, this feature often compensates for the added base cost. [Pg.1912]

The most common chain conveyor is the bucket elevator already discussed, but there are a wide variety of special chain conveyors which are used so infrequently that they shoiild be selected only on the specific recommendation of a quahfied materials-handhng engineer. [Pg.1922]

Track hoppers are needed for some boxcar and bottom-dump-car shipments. Since boxcars discharge to one side, fairly light construction can be used for the hoppers, which are located to one side of the tracks. However, for bottom-dump cars, the hoppers must be located on the centerline of the tracks. This requires heavy track girders over a hopper and feeder conveyor pit, but hopper depth must be set to give sufficient angle for material to flow well. Belts or reciprocating-plate feeders commonly carry the material to the bucket elevator. [Pg.1981]

Bulk alum can be stored in mild steel or concrete bins with dust collector vents located in, above, or adjacent to the equipment room. Recommended storage capacity is about 30 days. Dry alum in bulk form can be transferred or metered by means of screw conveyors, pneumatic conveyors, or bucket elevators made of mild steel. Pneumatic conveyor elbows should have a reinforced backing as the alum can contain abrasive impurities. [Pg.93]

Bins may be located inside or outside and the material transferred by bucket elevator, screw, or air conveyors. Ferric sulfate stored in bins usually absorbs some moisture and forms a thin protective crust which retards further absorption until the crust is broken. [Pg.99]

There are many other different types of solids-handling devices, ranging from dumpsters to screw and belt conveyors and bucket elevators. The range and variety of equipment make this subject too large to be adequately covered by this book. The reader is referred to the voluminous literature on the subject. For sizing equipment the most helpful source is often the manufacturers manuals. [Pg.204]

The main parts of the plant are the following bucket elevator, feed screw conveyor, 4 digester towers, unloader screw for the digested slurry, liquid phase silo, digested slurry conveyor with storage, gas holder, collecting pits, excess liquid collection pit, boiler house (Fig.3.). [Pg.365]

The cattle manure with about 25 p.c. dry matter content and the litter is transported by trailer to the reception hopper for manure and solid organic wastes. From here manure will be delivered by a bucket elevator, with the help of feed screw conveyor into the digester tower made of anticorrosive steel. The slurry and the sewage water mixed with faeces will be pumped into the digester. [Pg.365]

TABLE 5.6. Capacities and Power Requirements of Bucket Elevator Conveyors... [Pg.85]

The choice of appropriate equipment often is influenced by considerations of price. A lower efficiency or a shorter life may be compensated for by a lower price. Funds may be low at the time of purchase and expected to be more abundant later, or the economic life of the process is expected to be limited. Alternate kinds of equipment for the same service may need to be considered water-cooled exchangers vs. air coolers, concrete cooling towers vs. redwood, filters vs. centrifuges, pneumatic conveyors vs. screw or bucket elevators, and so on. [Pg.663]

Conveyors Troughed belt Flat belt Screw, steel Screw, stainless Bucket elevator Pneumatic... [Pg.664]

Conveying equipment. Cost of apron conveyors and bucket elevators. [Pg.569]

Choose a bucket elevator to handle 150 tons/h (136.1 tonnes/h) of abrasive material weighing 50 lb/ft3 (800.5 kg/m3) through a vertical distance of 75 ft (22.9 m) at a speed of 100 ft/min (30.5 m/min). What horsepower input is required to drive the elevator The bucket elevator discharges onto a horizontal conveyor which must transport the material 1400 ft (426.7 m). Choose the type of conveyor to use and determine the required power input needed to drive it. [Pg.246]


See other pages where Conveyors bucket elevators is mentioned: [Pg.170]    [Pg.134]    [Pg.115]    [Pg.2321]    [Pg.2238]    [Pg.548]    [Pg.170]    [Pg.134]    [Pg.115]    [Pg.2321]    [Pg.2238]    [Pg.548]    [Pg.287]    [Pg.415]    [Pg.160]    [Pg.1909]    [Pg.1922]    [Pg.101]    [Pg.154]    [Pg.765]    [Pg.1204]    [Pg.78]    [Pg.86]    [Pg.260]    [Pg.491]    [Pg.461]    [Pg.154]    [Pg.1667]   


SEARCH



Bucket elevators

Bucket elevators buckets

Buckets

Chain conveyors bucket elevators

Conveyor, Bucket Elevator, and Tension Linkage Chains

© 2024 chempedia.info