How does a rack and pinion work on a gate?

Rack and pinion steering works by using a gear system to translate the steering wheel's circular motion into the linear motion needed to turn the wheels. A metal tube houses the gear set. The tube has openings on each end to allow the rack to attach to an axial rod.

For what purpose the bucket elevator is used?

A bucket elevator unit or grain leg unit features a series of buckets that are attached to a rotating chain or a belt with pulleys at both places – top and bottom. Buckets are filled with bulk materials like grains, fertilizers, woodchips, coal and so on, at the bottom of the elevator and then moved to the desired point. Once the bucket reaches the point, it discharges the content and returns to the initial point. Bucket elevators have low driving power, which give them an edge over other conveyor types. Weight of loaded bucket assembly on either side of conveyor, keeps the system in balance, resulting in low power usage. They’re generally enclosed to protect the internal parts & make use of stainless steel fasteners to prevent rusting & corrosion.

What is the difference between a bucket conveyor and a bucket elevator?

Bucket elevators move bulk material vertically much like the conveyor belt. Buckets are attached to a rotating belt and fill with the material at the bottom of the elevator then move it to a designated point. When the bucket reaches this point, it discharges the contents, returns to the start point, and begins the process again. Buckets prevent spillage with their upright position design. There are three types of bucket elevators to choose from.

Three Types of Bucket Elevators

Configurations for bucket elevators get engineered for different applications. Depending on the kind of material you want the conveyor to move, the horsepower it will take to run it, and how high the elevator will go determines which type of elevator to use. The options open to you are centrifugal bucket elevators, continuous or positive discharge types.

Centrifugal Bucket Elevator rotates at a swift pace and deposits the material at the top of the lift at 'centrifugal force' (objects traveling in a circle behave as if they are experiencing an outward force). Centrifugal Bucket Elevators move at about 4.3 to 11.5 feet per second, with buckets spread further apart. This type of bucket conveyor works great with fine, granular material as it too fast for lumpy material.

Continuous Bucket Elevators are a much gentler process. This process moves much slower at 3.3 to 4.3 feet per second. Continuous Bucket Elevator best handles materials that are fluffy and light and should not be aerated. Buckets are placed side-by-side with no gaps in between so the material does not spill out. This system allows for more material processing per rotation. When using a bulkier material with this method, you will need horizontal or angular assembly.

Positive Discharge Bucket Elevator is a lot like the Centrifugal Bucket Elevator. This process works best on materials that will stick to the sides of the bucket and not allow them to discharge. Positive Discharge Bucket Elevator rotates slower at a rate of approximately 2.7 feet per second. Compensations are made for the slower speeds with the use of larger buckets. Buckets are passed over an extra sprocket to give them a jolt to dislodging stuck material.

Best Uses for Bucket Conveyor

The Bucket Conveyor process works best for dry, dusty material. These machines will also work well for heavier, more challenging material such as those found in mining operations. It is not recommended that you use this system if your material is wet, sticky, or has a sludge consistency. The build-up these materials can create discharge issues during your process.

What is a coal handling plant?

Coal handling refers to all the activities that are necessary to get the coal to the boiler once it has been delivered to the power station.

BTL EPC Ltd. provide turnkey solutions for coke-oven by-product recovery, enabling companies to efficiently manage harmful chemicals released during plant operations that potentially have damaging effects on the environment. This helps companies to not only meet statutory requirements and protect equipment from damage but also to realise the commercial value of these by products. We have a track record of handling projects for coal tar, ammonium sulphate, benzol and other chemicals.

What are the types of Coal Handling?

The Function of coal Handling Plant in thermal power plant is to receive , process, store, feed the coal bunkers consistently over entire life of the power plant.

What is Travelling Tripper?

Travelling tripper is designed for unloading and storage of bulk materials throughout the length of the warehouse. It is used together with belt conveyor.

What is a Tripper Conveyor?

A Tripper Conveyor is a form of conveyor belt used in construction, mining, and other large-scale earth-moving businesses. They are also known as tiered or stepped conveyers, and the term "tripper" is a colloquialism that formed after they came into widespread use. Belt Trippers are short belt conveyors that can be positioned at different points along a main belt conveyor to “trip” or divert the flow of bulk materials off through a chute. Bulk materials discharge off the Belt Tripper to another belt conveyor, to storage or to processing.

A Tripper Conveyor is a form of conveyor belt used in construction, mining, and other large-scale earth-moving businesses. They are also known as tiered or stepped conveyers, and the term "tripper" is a colloquialism that formed after they came into widespread use. Belt Trippers are short belt conveyors that can be positioned at different points along a main belt conveyor to “trip” or divert the flow of bulk materials off through a chute. Bulk materials discharge off the Belt Tripper to another belt conveyor, to storage or to processing.

Which core industries does BTL provide turnkey solutions?

Bengal Tools Limited, established in 1966, provides one-stop solution from concept to commissioning in Bulk Material Handling and Coal/Mineral Beneficiation plant, Oil and Gas sector, Shop Fabricated Equipment, Defence Equipment, Ship Hull Blocks, Ship Repairs etc.

Who are the key clients of Shrachi BTL EPC?

Shrachi BTL EPC caters to clients like BHEL, SAIL, NALCO, NTPC, Oil India Limited, CESC, Vizag Steel, Coal India Limited, Mecon, Indian Oil, TATA, NCC, Ministry of Defense, EIL, SMS Siemag, IISCO, JSW, SCCL, BGR Energy, etc. Consultants include CET, EIL, Lurgi, Mecon, TATA, Dasturco, CMPDI, Jacobs' Consultancy, Foster Wheeler, Mott MacDonald, etc. Inspection agencies include EIL, TUV India, ABS, ISO Bureau Veritas, LLoyd's Register Quality Assurance. BTL is currently engaged into commissioning of projects in IOCL Paradip, Hinduja NPCL (Vizag), BHEL Baurani, BHEL Bokaro, Tata Chemicals, NCC and NALCO, Damanjodi for MHPD and Rourkela Steel Plant, Vishakhapatnam Steel Plant, Durgapur Steel Plant and Bokaro Steel Plant for CCD.

What is the full form of BTL EPC?

Bengal Tools Limited Engineering Procurement & Construction

What are the advantages to go with BTL EPC?

The in-house Design & Engineering team consists of state of the art equipment and infrastructure and a team of highly qualified and experienced team of engineers and managers. The Project management team stands beyond 150 experienced engineers and managers and is equipped with a robust infrastructure

BTL EPC Ltd. is an ISO: 9001, ISO: 14001, OHSAS: 18001 certified company and registered with IBR and ABS. Our Quality Assurance Programme operates under guidelines which meet the most stringent quality requirements. The uniqueness of BTL EPC Ltd. is in its in-house manufacturing facilities. Over the last five decades, BTL EPC Ltd. has acquired four manufacturing & fabrication facilities

We have well-equipped modern Machine Shops, which include Heat Treatment, Precision Grinding, and Fabrication facilities of all descriptions including Sheet Metalwork. Our product line is equally diverse. In our endeavour to broaden the horizon, we have signed up MOUs with many global leaders in their respective fields.

Who are the board of directors of BTL EPC?

Mr Ravi Todi (MD), Mr Sunil Kumar Mitra(Chairman), Mr Amitava Guin (Executive Director), Ms Ruchi Todi (Director), Mr Subrata Paul (Independent Director), Mr Sourav Das Patnaik (Independent Director), Mr Ketan Sanghavi (Independent Director)

What are the Current Projects at BTL EPC?


Chemical Coal Division- SAIL BOKARO

Strategic Business Division- MSF ICHAPORE

Power Transmission Division- PTCUL, Uttarakhand

Water Management Division- Septage Treatment plants

What are the different divisions of BTL EPC?

Bulk Material Handling and Coal/Mineral Beneficiation plant, Oil and Gas sector, Shop Fabricated Equipment, Defence Equipment, Ship Hull Blocks, Ship Repairs, Strategic Business, Underground Mining, Power Transmission, Water Treatment, Solar Energy, Defence Sector, Manufacturing Division, Operation & Maintenance, etc.

Where is the manufacturing unit of BTL EPC?

BTL with its six factories (workshops), five in Kolkata (West Bengal), one in Durgapur (West Bengal), one upcoming facility in Bokaro (famous as Steel City in Jharkhand) and has presence in all regions of India with its four offices at New Delhi, Ranchi, Raipur, Chennai and various project sites across the country.

BTL manufactures process equipments like Pressure Vessels, Heat Exchangers, Process Column, Stack, Digester, Primary Gas Cooler, Decanter etc. BTL is capable of providing turnkey solutions and execution of projects on EPC basis by providing Engineering, Procurement, Supply, Manufacturing, Erection, Testing, Commissioning Services, Project Management and Site Construction Management.

How to apply for a job at BTL EPC?

For full job description, visit page.

Interested candidates may send your CV at OR Candidates have to mention the job title in the subject line of the email.

What is a flap gate and the purpose of it?

Flap gate is simply a thick plate hinged by one side and the other end is free. It is operated by actuator or rack and pinion. In a Y chute the leg which is need to be closed is covered by this gate while the other gate is open and materials can flow.

These are used to channelize the route of coal through another belt in case the former is broken or unhealthy. The flap gates open let the coal pass and if closed stop its movement.

What is a pipe conveyor and what are the two types of conveyors?

PIPE CONVEYOR is a modern and environmentally friendly transport system solving numerous problems associated with conventional conveyor system, i.e. spillage of materials, limitations with regard to steep incline and curve layout, etc.

PIPE CONVEYOR also manages to transport difficult materials, i.e. powder and/or materials that are similar to liquid.

BRIDGESTONE is the pioneer of the PIPE CONVEYOR system since acquiring patents and rights from Japan Pipe Conveyor Co. Ltd. in 1987 and has around 1000 supply records worldwide since the 1980's.

How do conveyors work?

A conveyor system is a fast and efficient mechanical handling apparatus for automatically transporting loads and materials within an area. This system minimizes human error, lowers workplace risks and reduces labor costs — among other benefits. They are useful in helping to move bulky or heavy items from one point to another. A conveyor system may use a belt, wheels, rollers, or a chain to transport objects.

What is conveyor idler?

A conveyor idler is a small round part of a conveyor belt that is similar to a gear or pulley. Pulleys and idlers are very similar items. In general, the idler is designated as a pulley that does not bear a primary load, or primarily drive a motor or component of a conveyor system.

Idlers are fitted to different sections of the conveyor belt depending on the purposes of their use. There is a wide variety of idlers available; however, the four most common idlers each have particular benefits. Some of these benefits include impact absorption, support for the carry and return sides of the belt or maintaining correct tracking of the belt.

What is idler pulley for conveyor belt?

The 4 Most Common Idlers are as follows:-

Trough Idlers
Trough idlers are the most common type of carry idler, which are typically designed with 3 or 5 idler rollers and are fitted to the carry-side of the conveyor belt. The 5-roll idler offers more uniform cross section, resulting in a greater net carrying capacity. The 3-roll design has a centre idler roll and wing idlers on either side.
The benefit of using a trough idler is that they help to ensure the load-bearing capacity of the conveyor belt is the same along the length of the belt. With a more even distribution of load-bearing, the maximum capacity of material at the loading point won’t fall off of the belt.

Flat Return Idlers
Flat return idlers are the most common idler on the return side of a conveyor with single steel mounted on two drop brackets. Although a one roller design for flat return idlers is the most common, they are also available with two rollers.
The purpose of using a flat return idler is to support the belt from the return side to prevent stretching, sagging and failure of the belt, which increases the service life of the conveyor belt.

Impact Idlers
Impact idlers are designed for loading areas of the belt, where belt damage is common due to the falling material and consistent impacts. Impact rollers absorb impact forces helping prevent damage to the conveyor belt, idler frame and surrounding structure from occurring.
The key benefit of using impact idlers is the prevention of damage to the belt as belts are costly to repair and replace. Therefore, they help improve productivity and decrease maintenance costs.

Training Return Idlers
Training return idlers detect belt misalignment and correct it, ensuring the belt tracks accurately at the tail end of the conveyor during operations.
If the belt misaligns and rubs against a fixed structure, the head chute or conveyor component, severe damage to the belt can occur as well as damage to anything the belt makes contact with. Therefore, using a training return idler helps to reduce belt damage and the associated repair costs to the belt, structure and components.