bucket elevator for feed

bucket elevator manufacturer | bulk material processing equipment

One of the most efficient ways to elevate bulk materials vertically is with a bucket elevator. A Bucket Elevator consists of a series of buckets attached to a belt or chain with pulleys or sprockets located at the top and bottom of the unit. The buckets are located in a casing or housing to contain the material. Bulk materials are loaded into each bucket as the bucket moves past an inlet point. KWS designs and manufactures a wide variety of bucket elevators based on the characteristics of the bulk material and the process requirements.

KWS Bucket Elevators are custom designed for your application. Bulk material characteristics, capacity and overall height are considered when designing Bucket Elevators. KWS is an ISO 9001:2015 certified manufacturer. Every component and assembly is manufactured in the USA by highly skilled craftsmen. All KWS welders are certified in accordance with American Welding Society (AWS) Codes. KWS Bucket Elevators are manufactured to rigid quality standards.

problems with bucket elevators - biomass engineering & equipment

Manufacturers often choose continuous bucket elevators because these machines seem like the obvious choice. Manufacturers need to handle material gently, they need to move materially vertically; they have limited space to do so; they need to move material quickly; and theyre using a belt conveyor to move product. A bucket elevator will accomplish these things. But it will do so with major drawbacks.

Out of the reasons why manufacturers choose continuous bucket elevators, their use of a belt conveyor typically drives their choice. But belt conveyors are notoriously bad at elevating product. They can only angle up 15 or 16 degrees before product begins rolling back down the belt. Thus, when manufacturers have to elevate product, they either have to use a long conveyor that takes up lots of floorspace (which is neither economical nor fast) or install some type of elevating equipment, such as bucket elevators.

There are two types of bucket elevators: centrifugal and continuous. Centrifugal elevators are commonly used to move grains and other non-fragile materials that weight up to 50lb/sq. ft. With these elevators, buckets dig into a pile of grain and throw the grain at the top of the elevator.

Continuous bucket conveyors dont dig material. The material is conveyed to the bucket elevator and is gravity fed into the buckets, which are commonly attached to a belt. The buckets elevate the product and discharge the product using gravity on the descending side of the elevator.

As said, bucket elevators come with a set of problems. Simply put, they can be a maintenance (and production) nightmare. Theyre complex. They increase the number of gears and parts to keep track of and replace. Theyre hard to clean, difficult to get aligned and flowing at the correct speeds, require tensioning, and on and on.

There are a lot of little things that can go wrong and, when not caught early, can quickly lead to big problems. Manufacturers who use bucket elevators rely on plastic buckets bolted onto rubber belting. As the machines collect material and elevate it, a lot of force is placed on those bolts. If these bolts begin to fail and maintenance doesnt catch it, the buckets can rip off the belt and do a lot of damageand a lot of downtime.

Another small issue is belt tracking. If the belt gets off track a little bit, the belt and the buckets can begin to wear. As the belt wears, it loses its integrity. As the buckets wear, they dont hold material as well. This leads to excess material falling into the bottom of the bucket elevator, which manufacturers either have to discard (waste) or manually feed shovel back into the system (a waste of time).

Jams are one of the most common problems with bucket elevators. Moving products can interlock or catch on the equipment frame, causing it to freeze. The production line must then be shut down and the elevator opened and the jammed material removed before production can continue. Jams can also occur when material builds up inside the bucket elevator shell or housing and eventually clogs the machine.

The good news is that this client knew about another choice: SMART Conveyors. Our drag conveyors eliminate the problems associated with bucket elevators and can replace belt conveyor systems altogether. For one, drag conveyors are easier to maintain than bucket elevators. They have fewer parts, they dont use belts, they wont jam from material buildup, they dont have worn buckets that stop interlocking start catching frame members, they dont employ a belt-drive system that can slip or mistrack

Weve even designed our conveyor for easy maintenance. Maintenance technicians can replace our curve wear strips externally, and our head sections are split, so crews can access the 3-piece, split sprockets with ease. (3-piece, split sprockets let maintenance crews change the sprockets without breaking the chain.)

Weve had conveyors run for years with only routine maintenance performed. Our wear strips rarely need replaced, even on curves. Typically, all maintenance crews have to do to our conveyors is lubricate them.

Elevating materials at steep angles isnt a problem for our conveyors. The conveyors can elevate materials at angles up to verticalwith minimal support structure required. This means that valuable floor space wont be taken up.

Drag conveyors also eliminate the mess associated with bucket elevators. There wont be anything to clean up on the floor or in the conveyor itself. Also, because our conveyors are enclosed, we can make them dust tight. This eliminates debris in the air which workers must breathe, and it makes the conveyor better from a safety point of view, as its easier to prevent and contain fires.

Drag conveyors also handle material gently. Our paddles are designed with fingers that rake the product and keep it from packing together, so it runs smooth through our machine and doesnt get crushed. Its no rougher than transferring the material and dumping it. And unlike an auger/screw conveyor, it also wont chop up or otherwise decompose material.

Material also wont face the constant, harsh grinding from a center-line chain in our conveyor. We use dual chains to pull the paddles through our system that are placed on the conveyor sides outside the path of the material.

Drag conveyors are far superior to bucket elevators for elevating material. If youre tired of your bucket system or are simply weighing your options for material handling, give us a call. Find out for yourself the meaning of our slogan: Superior Engineering. Superior Performance.

Ill need additional information before I can answer the question you posted on our website (Im looking for a conveyor to move sand): Tons per hour of material you need moved Description and density of the material

bucket elevators | guttridge

Over 50 years of experience has equipped us with the knowledge and expertise to be able to offer advice and solutions for any aspect of bulk materials handling across a wide range of industries and a diverse assortment of materials.

Bucket Elevators are a simple but effective method of elevating free flowing and semi-free flowing bulk materials. Their inherent simplicity makes them a popular choice for bulk material handling and processing applications. Guttridge bucket elevators operate across the world in a wide variety of markets, from grains, feeds and foods to oilseeds, biomass, waste and minerals.

Guttridge bucket elevators are capable of handling most free flowing materials as well as many materials with poor flow characteristics. The specification of the Guttridge standard range of bucket elevators is also easily tailored to suit:

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Guttridge is committed to protecting and respecting your privacy. Any personal data we collect will be processed by us, please read thisprivacy policycarefully to understand your rights regarding your personal data.

belt bucket elevator, bucket elevator, belt type bucket elevator henan excellent machinery co.,ltd

The hopper picks up the material from the underlying storage, and as the conveyor belt is lifted to the top, it rolls over the top wheel and then flips down. The bucket elevator pours the material into the receiving tank. The drive belt of the belt bucket elevator with belt drive is generally equipped with rubber belt, which is mounted on the lower or upper drive roller and the upper and lower redirection rollers. Belt bucket elevator: suitable for lifting from low place to high place. The supply material is automatically transported upwards and continuously after the material is put into the hopper through the vibrating table.

The standard configuration adopts the orthogonal shaft reducer and the fluid coupling, and is equipped with a backstop device. The transmission structure is compact and the flexible transmission is realized. It can not only stabilize the operation, but also protect the motor, reducer and traction parts.

Here are mainly steel buckets and high molecular polyethylene buckets, as well as shallow buckets, deep buckets, guide buckets, combination buckets, dewatering buckets, etc., which can be selected according to material characteristics and unloading methods. The bucket elevator can be equipped with a tear-resistant steel cord conveyor belt as the traction member, which has good toughness and high strength.

1.Which material to be handling:______ 2.Handling capacity:______t/h. 3.Lifting height of bucket elevator = : ______m 4.Bulk Material Density: ______t/m3 5.Max. granule size of the material: ______mm 6.Max. granules percentage in whole material:______ % 7.Material temperature:______ 8.What equipment is used to feed the material into the belt bucket elevator:______ 9.What equipment is used to discharge the material from the belt bucket elevator:______ 10.Working power supply: ______V ______HZ 11.Quantity:______ 12.As everyone knows, the belt bucket elevator work with other equipment to form a process system, therefore, we will appreciate if you can provide us the preliminary design or hand-drawn sketch of the process system for our engineers reference.

bucket elevators / grain legs / elevator legs - commercial and ag duty

Sudenga Industries employs the latest advances in manufacturing technology and production methods to produce solid, reliable bucket elevator systems that are available for both commercial and on-farm applications. Our grain legs have many features that set them apart. Just compare ours to others. Jigged and robotically welded components, pre-welded platforms for ease of assembly, high quality double-row spherical and tapered roller pillow block bearings, drum style slatted boot pulleys, rubber leg belt and heavy gauge construction all come standard. Sudenga bucket elevators offer the value added features that you and your operation demand. Our finish is an attractive, durable blue enamel, with other colors available on request. Hot dipped galvanized finish is available for ultimate long term resistance to the elements.Available with discharge heights exceeding 200 feet and with capacities up to 40,000 BPH.

Contact us for assistance in selecting and pricing a complete bucket elevator system. Our experienced, knowledgable staff is available to help guide you though the selection process. Whether you have been thinking about your material handling system for years or days, give us a call, we can provide assistance which will help you avoid common pitfalls and mistakes that cost time and money.

Sudenga is your one stop source for complete grain leg systems. Support equipment includes: elevator leg support towers in all common sizes, super span catwalk, 40 degree and 60 degree flat back and full round distributors, spouting and truss kits, rack and pinion gates, elbows, transitions, hoppers, deadheads, and more. Contact our team of specialists to learn more or find a dealer near you to get started on your bucket elevator project.

Sudenga bucket elevator systems, or grain legs, are designed and built to exacting specifications giving the owner a system that will provide more years of service, with less downtime and repair. We offer:

Receive from both hoppers of a trailer at the same time with Sudengas patented Shallow Double Drive Over Receiving Pit. Capacities up to 17,500 BPH and the low-profile design make this conveyor system a versatile solution.Read more

Field tested and proven to perform. From high capacity u-trough power sweeps to simple under floor tube and auger systems, Sudenga sets the standard in bin unloading systems. Specify Sudenga for your next bin sweep.Read more

Horizontal drag chain conveyors feature low horsepower requirements per bushel compared to an auger. Minimal long term maintenance and durability are characteristics of a drag conveyor. Overhead, on-grade or underground, drag chain conveyors are a great choice.Read more

Incline drag chain conveyors are ideal for conveying grain from pits to legs, underground or overhead... wherever high capacities are required. Drag conveyors feature low-maintenance and low horsepower requirements per bushel compared to an auger. Galvanized construction and multiple inlet/outlet configurations ensure ease of installation and use for years to come.Read more

The Double Barrel chain conveyors have the benefits of a traditional chain conveyor (durability, low horsepower consumption and great capacity), but can be installed anywhere a traditional auger, air system or drag chain conveyor might be installed. Available with capacities up to 10,000 bushels/hr. The system is totally modular so lengths can be tailored to the specific application.Read more

Capacities up to 17,500 BPH. Sudengas innovative low-profile conveyors feature big capacity with the advantage of minimized installation cost and the long-term durability of drag conveyors. Great in retrofit applications where space or ground water is an issue. Originally developed to feed bucket elevators from shallow drive over pits, thousands of applications later these units can be found loading out to semi-trailers or returning grain to the leg from a low clearance loadout.Read more

bucket elevators

Bucket elevators are used for the elevation of dry or pulped ore. They consist of an endless chain or beltcarrying the buckets vertically or at a steep angle. On reaching the top pulley they should turn at sufficient speed to fling their contents out with a measure of centrifugal force. The feed is directed into a gathering boot or to buckets rising from a boot. Wet ore can be drained through perforations in the buckets. A rod can be so suspended as to rap the discharging bucket and so help to shake out packing sludge.

Belt bucket elevators are by far the most common appliance for elevating ore, whether wet or dry. For wet work, they have the advantage over chain-bucket elevators of requiring no difficult and expensive lubrication and of having fewer wearing and friction-producing surfaces. The capacity of a given belt, however, is limited by its adhesion to the head pulley; this can be augmented by a wrapping of less slippery material around the pulley. As compared with inclined conveyors, they occupy much less floor space, and can also elevate thin pulps. It is important to provide means for emptying the boot of an elevator when repairs are needed; so placed that the discharged material can be sluiced or easily transferred by other means to an adjoining elevator.

A Bucket Elevator Conveyor compared to classic belt conveyors which can handle the bulk of the dry ore moved through the modern plant, have a system including a tripper. The belt conveyor obviously includes the belt, the carrying and return idlers (B and E), the take-up (F), the tripper and shuttle belts if used, the drive (C), the belt cleaner (near D).

The standard rubber belt has a cotton foundation which must be strong enough to withstand the driving pull and the loading strains. The weight of duck in ounces, refers to a single thickness or ply 36 x 42. Plies are bonded together with rubber, and the pull needed to separate two plies in a strip one inch thick is termed the friction. It is between 12 lb. and 24 lb. and chosen for required duty and flexibility. The plies must not separate under the worst conditions (i.e. when rounding the end pulleys). This carcass (plies) is protected above and below by rubber, of the specified tensile strength (800-4000 PSI). Covers vary in thickness from 1/16 to . For severe service, a breaker strip of open mesh fabric may bind cover the carcass and confine any tear arising in use. Cord belts have additional longitudinal cords embedded in rubber.

A bucket elevator consists of a number of buckets (d) fastened to an endless chain or belt (a) running respectively on two sprockets or pulleys (b, c) at different elevations. Material is fed at (e) directly into the buckets or is scooped up from the BOOT (f) and carried up and discharged into a receiving hopper (g) as the buckets pass over the upper (HEAD) wheel. The line joining the centers of the pulleys or sprockets may be inclined at any angle between 65 or 70 and the vertical. Bucket elevators are called continuous if the buckets are spaced practically touching and centrifugal discharge if the buckets are spaced say one or more bucket-depths apart. The height of lift in concentrating mills is seldom over 75 ft. but there is no definite limit in the ordinary range of requirements.

The drive is usually by a spur gear on the head shaft and pinion on a jackshaft belt-driven from a motor or line shaft. Direct belt drive from a line shaft to the head shaft is sometimes used; also direct connection of a motor to the pinion shaft. Gear drive is better than belt drive because it permits higher drive-belt speed and belt drive is better than direct connection because the belt will slip in case of a sudden jam and possibly save breakage of the bucket line.

The Head shaft should be extra heavy and as short as possible. The greatest stress is due to the weight of the loaded bucket line and to sudden shocks arising from obstruction to the free motion of the line; a shaft strong enough to support this loading is more than large enough to transmit the necessary power. A light shaft that bends under load causes uneven and excessive wear on bearings.

Size of the head shaft. Let w = total load in lb. of shaft, pulley, bucket line and ore; l = length in inches of the shaft between bearings; d = diameter of shaft in inches; z = section modulus = d/32; s = permissible working stress in lb. per sq. in. = say 5000 lb. Then wl/4 = sz = 5000 d/32 and d = wl/1963.5.

Bearings may be of the standard pattern but preferably ball-and-socket, grease lubricated. Special collars with an interlocking rim to cover the end of the bearing are sometimes used to exclude grit; closed ends aid exclusion. Shafting is frequently turned down on the ends to permit the use of smaller-sized bearings.

A rubber belt is a usual medium for carrying buckets in American concentrating-mill practice; balata belts have been widely used in South Africa. Rubber elevator belts are usually made with 32-oz. duck; for heavy work, 36- or 42-oz.; with a 1/32- to 1/8-in rubber cover on the pulley side for protection against pulley slip and some cover on the bucket side also, to provide for the wear of entering feed; for wet materials, the cover on the pulley side is usually twice as thick as on the bucket side and ranges up to 1/8-in. The edges usually have an extra-heavy covering. The belt should be two to four in. wider than the bucket to prevent the buckets from catching on the housing or any other projection. Elevator belts are subject to heavy loads; surface wear is severe both on account of loading conditions and slip and creep at the head pulley; the perforations for bolts allow access of grit and water, and this in conjunction with acute bending around small boot pulleys, and frequent bending due to short length disintegrates the internal bond (friction). (Creep is a change in belt length, due to difference in tension on the two sides of the head pulley, so that the belt shrinks in passing from the upside to the downside and this causes relative movement between the surface of the pulley and the belt).

Belt replacement is the most important item of upkeep in elevator operation so that precautions to extend belt life pay for themselves in short periods. On elevators with buckets spaced some distance apart and run at low speeds, triangular strips of wood are sometimes fastened to the belt between buckets to prevent material from running along the belt and getting caught behind the buckets; this practice is reported to have greatly increased the life belts.

Chain bucket elevators, in spite of their multiplicity of wearing and breaking elements, can be used satisfactorily far dry work but must then be lubricated with heavy grease to minimize the effect of grit; their capacity is limited only by the size of buckets that, can be supported. Certain types have a pronounced advantage in being able to receive or discharge at a number of points in their travel, thus combining the functions of elevator and conveyor.

The advantage of a Chain Bucket Elevator over a conveyor belt is that it can lift material vertically and can handle large quantities of material. The special design of the buckets ensures high stability and reduced risk of spillage.

A Bucket Chain Elevator is designed to lift material from point A to point B by means of buckets. The buckets are pulled by two chains. The Chain Bucket Elevator is typically used to lift the reject material and return it to the main flow in a sampling solution.

The Chain Bucket Elevator consists of an inlet hopper, a vibration feeder, buckets, a gear-motor drive, inspection hatches, and an outlet chute. There is an inlet hopper at the bottom with a VF that provides a consistent flow of the material into the buckets. The buckets are mounted on the chain that continuously pulls the buckets around by a geared motor. At the top of the unit, there is an outlet chute where the buckets are emptied. There is a drawer in the lower section allowing for easy cleaning. The chain is manually adjustable.

The Bucket Belt Elevator (BBE) is designed to lift material from point A to point B by means of buckets. The buckets are attached to a belt that pulls them around. The Belt Bucket Elevatoris typically used to lift the reject material and return it to the main flow.

There is an inlet hopper at the bottom with a VF that provide a consistent flow of the material into the buckets. The buckets are mounted on the belt that continuously pulls the buckets around by a geared motor. At the top of the unit there is an outlet chute where the buckets are emptied. There is a drawer in the lower section allowing for easy cleaning. The belt is manually adjustable.

All sampling equipment and solutions aim for compliance with the principles laid down in the Theory of Sampling (TOS) and gives our customers reliable knowledge of the material properties such as moisture content, particle size distribution, mineral proportions, and content grade essential for commercial, operational, and technical characterization.

The Bucket Lifter (BL) is designed to lift material from A to B by means of one or more buckets. Compared to the Chain Bucket Elevator or the Belt Bucket Elevator, the Bucket Lifter is specifically designed for lifting smaller quantities of material.

The Bucket Lifter consists of a gear motor, bucket(s), a chain/belt and a steel construction. A loading station in the bottom ensure that the bucket(s) is being dosed correctly. The bucket(s) are lifted to the top where it is emptied when it is tilted around. After a preset time, tilted, the bucket reverses and returns to the bottom, ready for the next filling. If the Bucket Lifter has more than one bucket, each bucket is being emptied one after the other before the all the buckets are return to the bottom section.

All sampling equipment and solutions aim for compliance with the principles laid down in the Theory of Sampling (TOS) and gives our customers reliable knowledge of the material properties such as moisture content, particle size distribution, mineral proportions, and content grade essential for commercial, operational, and technical characterization.

Those familiar with mill-practice understand the work required of an average bucket elevator, but I wish to call special attention to the wear on the buckets. I have been studying in what manner the life and service of the bucket might be improved, and I feel that an adjustable lip, attachable to each bucket without the aid of rivets, will be of material advantage.

For illustration (Fig 1 & 2), consider the feed-elevator of a typical mill in the Coeur dAlene district. The ore is carried by water in a launder from the feed-rolls and dumped in the boot of the elevator, directly in front of the ascending bucket. Middlings from the return-rolls are similarly handled. Under this condition the bucket not only carries the ore, but also picks it up, and this latter requirement determines the life and service of the bucket. It might be said that it would be better practice to convey the feed to the elevator and dump it directly into the bucket, but at one mill at which this plan was tried the results were disappointing and the rubber belt was badly worn.

The wear of the bucket is confined to the lip and the corners which have to pick up the material. When the lip on a corner of a 7- by 12-in. malleable cast-iron bucket is worn down about 3 in., the bucket is of no further value as a carrier and has to be replaced. The worn bucket, containing about three-quarters by weight of the metal of the original bucket, has a scrap value of about 10 per cent, of that of a new bucket. To the cost of the bucket, however, should be added the time-cost of replacing the old bucket by a new one. This time-cost is considerable when the loss per hour, to cease operating the mill.

It is out of the question to put lips on a bucket unless the latter was originally fitted with this device. For if it is attempted to fit lips upon buckets not originally provided with them, it will be necessary to drill holes for rivets and then spend considerable time fitting the lips to the irregular contours of the worn buckets. The improvement suggested is an adjustable attachment which can easily be fastened to, or removed from, the base of a bucket without the use of rivets. This attachment, to be made of a high-grade steel drop-forging or casting, will combine toughness, hardness, and tensile strength. The base of the bucket may be a cheap casting,

possibly ordinary cast-iron. This combination of lip and base will not increase the cost of the improved bucket much, if any, above that of the ordinary bucket now in use, but will increase the life of the bucket, doing the same amount of work, about 400 per cent., with a corresponding decrease in time lost in changing buckets.

This improved bucket is illustrated in Fig. 1, which shows a projection of the bucket with the attachment in place. Two bolts, one on each side of the elevator-belt, pass through the base and attachment and hold both fast to the belt. These end-bolts are 0.25 in. longer than the others. Fig. 2 shows the bucket with part of the lip removed, illustrating the manner in which it is fitted to the base and the opening at A which receives the lug A. There is another opening at B, which is not shown.

I am indebted to Stanley A. Easton, (General Manager of the Bunker Hill & Sullivan mine, for the following data, which bear out my statement, and show that others have been trying to improve the service of elevator-buckets. He says that they use there 7.75- by 17-in. malleable cast-iron buckets, which give approximately 80 days continuous service on middlings-elevators,

(almost) everything you wanted to know about bucket elevators | cdm systems, inc

One of the many types of bulk material handling equipment offered by CDM Systems, bucket elevators specialize in vertical or high-lift conveying of large amounts of material using a series of buckets. They can be found in multiple industries and are effective at handling a variety of materials ranging from heavy iron ore pellets to powdery, dusty, dry material such as sand and fly ash.

But just as this equipment can handle more than one type of material in more than one industry, there is more than one type of bucket elevator: centrifugal and continuous. Our Bucket Elevators Info Sheet goes into more illustrated detail about the differences between the two, but in basic terms:

These differences only tell part of the story.The specific industry in which the equipment will be operating is another important factor in the bucket elevator selection process. Our individual industry pages offer additional insight and equipment recommendations, but here are some general guidelines for the industries we serve:

And there you have it:(almost) everything you wanted to know about bucket elevators. To learn more about why CDM bucket elevators are the ideal vertical conveying solution for a variety of materials, elevations and discharge requirements, contact a CDM expert today. With more than 40 years of experience building bucket elevators in a variety of configurations, we are uniquely qualified to help you make the right equipment decision that will literally take your material handling to the next level.

The CDM story is about recognizing every industrial operation is different, as are their conveying challenges. A custom-engineered conveying system is a cost-effective approach to any operation willing to look at the value of having a partner who is vested in your success and one who stands by their product. CDM has earned more than 91 percent repeat business because were more than just a conveying systems manufacturer were a business partner.