Month: March 2020

A bucket elevator is a conveyor for carrying bulk materials in a vertical or inclined path. Bucket elevators for the mechanical, vertical transportation of materials have become a crucial link in the production process in many industrial sectors.

Typical elevator consists of:

1. An endless belt,

2. A chain or chains, to which buckets are attached,

3. Necessary loading and discharging terminal machinery,

4. A drive arrangement,

5. Supporting frame or casing.

Material is fed into an inlet hopper. Buckets (or cups) dig into the material, and convey it up to and over the head sprocket/pulley, then throwing the material out the discharge throat. The emptied buckets then continue back down to the boot to continue the cycle.

Industrial Bucket Elevators are made in a variety of shapes, weights and sizes, utilizing centrifugal buckets or continuous buckets. The belt can be made of natural fibres, rubber, plastic or metal.

Centrifugal Bucket Elevators are most commonly used to convey free flowing materials. They operate at high speeds, which throw the materials out the buckets into discharge throat by centrifugal force.

Continuous Bucket Elevators have buckets spaced continuously and operate at slower speeds. The continuous bucket placement allows the force of gravity to discharge their load onto the inverted front of the preceding bucket. The bucket then guides that material into the discharge throat on the descending side of the elevator. They minimize product damage or are used to handle light, fluffy materials where aeration of the product must be avoided.

The motion of belt or chain is un-directional. Bucket elevator is a very simple yet reliable device for lifting of bulk materials. Bucket elevators enjoy a few advantages, which include simplicity of design and fabrication, requires minimum floor space, low initial investment.

Types of bucket elevators:

Often bucket elevators are classified according to the bucket spacing and mode of discharge. They are:

1. Centrifugal discharge elevators

2. Gravity or Continuous discharge elevators

3. Positive discharge elevators

Components of bucket elevators:

The essential components of a bucket elevator are:

1. Buckets

2. Carrying medium

3. Boot arrangement

4. Head arrangement

5. Casings

Application:

Typical average materials which can be conveyed by bucket elevators are:

· Lime stone crushed to 25 to 30 mm size,

· Foundry sand,

· Coal,

· Coke,

· Sugar

· Animal feed

· Chemicals

· Phosphate rock,

· Cement mill clinker

· Friable

· Fragile materials

· Candy

· Snacks

· Coffee

· Rice

· Seed

· Soaps

· Detergents

· Plastic Granules

Limitations:

Limitations of the system include the following points:

· Lump size should be under 100mm

· The material should not be very sticky

· The temperature of the materials should be ambient or slightly above

· The materials should not be excessively corrosive or abrasive

Advantages of belt system over chain system:

The traction element may be either endless belt or endless chain, but belt system is preferred under certain conditions for the following reasons:

· Higher speeds possible

· Quieter operation

· Possess better abrasive resistance to materials like sand, coke etc.

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SolidWorks

Solidworks Basic Tutorial | Solidworks Models For Practise | Solidworks Model Online

By magnaparthi on 31/03/2020

Solidworks Model 1

Mechanical seals are leakage control devices, which are found on rotating equipment such as pumps and mixers to prevent the leakage of liquids and gases from escaping into the environment. A mechanical face seal is an important component of variety of pumps used in chemical, petrochemical and process industry.

The seal is designed to fit around the shaft or some part connecting to the shaft in a way such that the leakage between the two regions is acceptably small under all circumstances of operation.

Wherever the rotating shafts are used, shaft seals find their place with them. Generally rotating shafts either run into fluids where the fluid is sealed by the shaft seal or are supported by bearings, which are in turn sealed by a shaft seal. Thus almost all rotating equipment require a shaft seal.

The various types of mechanical equipment that utilize shaft seals are as follows:

Aerospace industries where motors and engines in rockets and turbo jets.
Water pumps used in irrigation, pumping of fertilizers and insecticides.
Swimming pool pumps and garbage disposal pumps, dishwashers and washing machines use small sealed pumps.
Water turbines, steam turbines, feed pumps, and nuclear reactor cooling pumps.
The petroleum, chemical, textile and drug industries all use pumps extensively in their respective processes.
All automotive engines, compressors, air conditioners.
Ship propeller shafts as well as its auxiliary equipment in ship yards.

Solidworks Model 2

The sliding clamp is manually placed in the T-slot and screwed against the die clamping edge. Once the high-pressure spindle has been adjusted to suit the height of the clamping edge, the clamping force is built up by turning the hexagon nut in a clockwise direction. The clamping force achieved depends on the tightening torque selected with the torque wrench. If the parts are not rigid, tighten the high-pressure spindle using the hexagon nut until there is no play.

Applications:

For clamping and locking dies on press beds and rams
On beds of machine tools
When the available space is limited

Solidworks Model 3

SolidWorks is a 3D solid modelling package which allows users to develop full solid models in a simulated environment for both design and analysis. Designing in a modelling package such as SolidWorks is beneficial because it saves time, effort, and money that would otherwise be spent prototyping the design. SolidWorks software provides users with an intuitive 3D experience that maximizes the productivity of your design and engineering resources to create better products faster, and more cost-effectively.

Today, most manufacturers of automobiles, arm and construction equipment, recreational
vehicles and other gasket-using equipment apply three-dimensional (3D) computer-aided
design (CAD) software to create product models. The technology allows designers to produce engine and ultimately whole vehicle designs solely on computers. By modelling in three dimensions, the designers can do electronically all the spatial fitting of a components with respect to clearances and tolerances, avoiding a lot of rework on actual hardware.

Solidworks Model 4

CAD software supplies the tools for both design and manufacturing to create and explore various shapes, mechanisms, and structures. The software enables all the geometries to effectively communicate together. In turn, you are able to view and troubleshoot a concept without prototyping, cutting, forming, etc. Solid models are characterized by the deﬁnition of 3D volumes, both interior and exterior. In addition to volume and mass property data, Solid models usually provide cross section and interference detection.

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Month: March 2020

Bucket Elevator Part | Bucket Elevator Guide | Bucket Elevator How It Works

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