CONVEYOR BELT SCRAPER BENEFITS

• Increased profitability by reducing the cost of unnecessary cleanup from spills.
• Less material loss by scraping the belts clean at the head pulley.
• Longer lasting conveyor equipment. Material that is not scraped often ends up inside the conveyor system, damaging rollers and idlers.
• Reduced dust problems and belt maintenance. Fugitive dust is a by-product of material that falls from under the belt on the return trip.

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BELT SCRAPER PRODUCT SPECIFICATIONS

West River Conveyors is proud to offer a wide selection of high-quality primary and secondary belt scrapers from Martin Engineering. These scrapers ensure thorough cleaning of conveyor belts, maximizing efficiency and minimizing maintenance requirements. We offer several models tailored to meet the specific needs of your conveyor system.

Primary Belt Cleaners: Engineered for Optimal Performance

Primary scrapers can accommodate belts up to 120 inches wide and operate at speeds up to 2,000 feet per minute. They’re manufactured out of premium-grade steel and high-performance urethane materials to withstand the rigors of continuous operation in demanding mining environments. Replacing and maintaining blades is also quick and straightforward, thanks to their user-friendly design.

Secondary Belt Cleaners: Finishing the Cleanup Job

Secondary belt scrapers are installed where the belt leaves the discharge pulley. Their purpose is to remove any material the primary cleaner missed. They are positioned close to the primary cleaner, so discharged material falls back into the main flow. Additional secondary cleaners provide final belt cleaning before the return idlers. 

BELT SCRAPER FEATURES

Belt scrapers are essential for keeping conveyor belts clean and optimizing material flow. Proper selection is crucial because the scraper must be tailored to the specific needs of the conveyor system. This includes the type of material transported, the environment in which the conveyor operates, and the characteristics of the belt.

The following specs apply to both primary and secondary scrapers:

Blade Type—The primary scraper is positioned on the head pulley, removing the bulk of material from the belt. The secondary scraper is installed after the primary scraper to clean the belt further and improve cleaning efficiency.

Mounting—Fixed mounting scrapers are stationary and mounted rigidly to the conveyor structure. Floating mounting scrapers are mounted on a flexible arm or tensioner. This allows it to follow the contours of the conveyor belt.

Adjustability—Some scrapers have tension adjustment mechanisms to control the pressure applied to the belt. The blade position adjustment allows for fine-tuning the scraper’s contact with the belt.

Wear Life and Durability—The scraper material should resist wear and abrasion to ensure a longer service life. It should also resist corrosion if the conveyor operates in a corrosive environment.

Temperature Range—The scraper should be suitable for the temperature range of the conveyed material and the operating environment.

Cleaning Efficiency—The design should ensure effective cleaning without causing damage to the conveyor belt.

Compatibility—Ensure the scraper is compatible with the specific conveyor belt and system type.

Installation and Maintenance—Consider ease of installation and maintenance to minimize downtime.

Regulatory Compliance—Ensure the scraper complies with relevant safety and environmental regulations.

Customization—Some applications may require custom-designed scrapers. Check if the manufacturer provides customization options.

Documentation—Product documentation should include installation guidelines, maintenance instructions, and other relevant information.

HOW DO BELT SCRAPERS WORK?

After the main conveying process, the scrapers remove the remaining material on a belt. These scrapers are typically made of highly durable materials to withstand harsh operating conditions. They are installed at strategic points along the conveyor to prevent the material accumulation of material reduced belt damage.

Primary Belt Scrapers—The initial line of defense against carryback is primary scrapers installed at the head pulley, where the belt is most likely to retain material. They aggressively scrape off the bulk of the material adhering to the belt. This helps ensure carryback removal before the belt returns to the loading zone.

Secondary Belt Scrapers—We typically install downstream scrapers after the primary scraper to provide additional cleaning. These scrapers remove any material the primary one misses. Using multiple scrapers works well for sticky, abrasive materials or high-speed conveyors.

Self-Adjusting Mechanisms—Many modern belt scrapers have self-adjusting mechanisms that automatically adjust to changes in belt tension, wear, and other variables. This ensures the scraper maintains optimal contact with the belt, providing consistent cleaning performance.

Application-Specific Design—The need for primary and secondary scrapers can vary depending on the specific application. For instance, they’re both often used in mining and aggregate operations to handle heavy loads and abrasive materials. Properly positioned primary scrapers can prevent cross-contamination in sanitary food processing industries.

Customized Solutions—Conveyor system designers and operators can tailor the use of primary and secondary scrapers based on the specific needs of their operation. For example, a standalone primary scraper works well if the conveyor system is relatively short or the conveyed material does not present a significant carryback risk. On the other hand, long systems or those with sticky materials may need both primary and secondary scrapers to maximize cleanliness and efficiency.

Installing primary and secondary belt scrapers requires considering the material’s nature, conveyor length, and the operating environment. While using both scraper types frequently provides comprehensive cleaning, specific applications may call for using one over the other based on their particular requirements.

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CONSIDERATIONS FOR BELT SCRAPER SELECTION

It’s essential to carefully consider your specific use case when choosing a belt scraper. They’re highly effective in industries like mining and cement, where large amounts of material are transported. The right type and size of the scraper depends on the material you’re moving, the conveyor belt width, and the workplace environmental conditions.

Abrasive materials necessitate a durable surface scraper to withstand wear and tear. Sticky materials may require a specially designed blade. Additionally, scraper materials must be rugged enough to resist extreme temperatures or chemical exposure.

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Other factors to consider include:

Material Compatibility—Choose a scraper that matches the nature of the material, whether it’s abrasive, sticky, or standard.

Belt Width Compatibility—Ensure the scraper is appropriate for your conveyor belt’s width for efficient cleaning.

Environmental Resilience—Select materials that can endure the specific environmental challenges of your workplace, like high temperatures or corrosive elements.

Blade Design and Durability—Opt for a blade shape and material that offers both effectiveness in cleaning and longevity.

Maintenance and Cost—Consider how easy it is to maintain and replace parts of the scraper. Balance the initial purchase price with long-term maintenance costs.

Manufacturer Reputation and Compliance—Select a scraper from a reputable manufacturer to guarantee quality and reliability. Ensure it meets industry standards and regulations.

SCRAPERS FOR THE MINING, TUNNELING, QUARRY AND HEAVY-DUTY PROCESSING INDUSTRIES

West River Conveyors is a leader in mining conveyor equipment, including custom remote discharges, conveyor structures, fluid couplings, and more. We offer excellent pricing on primary and secondary scrapers and cleaners. Contact us below to learn more and get a quote.

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CONVEYOR BELT SCRAPER FAQ

Q: HOW DO I CHOOSE BETWEEN PRIMARY OR SECONDARY SCRAPERS?

A: Primary scrapers are for initial cleaning. Secondary scrapers provide additional belt cleaning in a different location on the conveyor.

Q: HOW DO I DETERMINE THE RIGHT SIZE SCRAPER FOR MY SYSTEM?

A: The size of it should match and cover the width of the conveyor belt for maximum cleaning.

Q: HOW OFTEN DO SCRAPERS NEED TO BE CHANGED OUT?

A: It usually depends on the environment; some will wear out a scraper faster than others. You should replace blades when they become ineffective.

Belt scrapers are essential components in conveyor belt systems, used in various sectors to ensure efficient and clean operation. Here’s a breakdown of the different types of belt scrapers, their applications in different sectors, and the features and benefits that make them important:

What are the different types of belt scrapers?

Primary Belt Scrapers:

These belt scrapers are positioned against the belt immediately after the material discharge point. They feature rigid blades for effective scraping used for the initial removal of material adhering to conveyor belt surfaces.

Secondary Belt Scrapers:

Secondary scrapers are located further down the conveyor system. They feature softer, more flexible blades and are designed to remove finer particles that the primary scraper missed.

Tertiary Scrapers:

Employed in situations where extremely clean belts are required and often used in conjunction with secondary scrapers. This is to ensure almost all residual material is removed.

Motorised Belt Scrapers:

Utilise brush-like structures for gentle scraping. Ideal for delicate materials or belts that require a softer touch. Prevents material getting stuck to return belt and material build-up on return rollers.

V-Plow Scrapers:

Positioned at the tail pulley to clean the underside of the belt. It prevents material buildup that could damage the belt or pulleys.

Features and Benefits:

Efficiency
– Improve operational efficiency by reducing material carryback.

Belt Protection
– Reduce wear and tear on the conveyor belt by removing abrasive materials.

Reduced Maintenance Costs
– Decrease downtime and maintenance requirements.

Enhanced Safety
– Minimise risks associated with material buildup and spillage.

Improved Cleanliness
– Keep the work environment cleaner and reduce material loss.

Versatility
– Suitable for various materials and environmental conditions.

Importance of Conveyor Belt Scrapers

Prevent Material Buildup: This is critical for avoiding material buildup that can cause belt misalignment and damage.
Maintain Efficiency: Ensure smooth operation and prevent blockages or slowdowns.
Prolong Belt Life: Removing abrasive materials prolongs the lifespan of the conveyor belt.
In some industries, cleanliness and material handling are regulated for health, safety and environmental reasons.
Cost-Effectiveness: They represent a cost-effective solution to maintain the high performance of conveyor systems.

In summary, conveyor scrapers are crucial for the efficient, clean, and safe operation of conveyor systems across various industries. Their ability to remove residual material from belts not only protects the conveyor system but also maintains operational efficiency and safety standards.

Conveyor Belts Glossary of Terms

Did you know? there are also lots of different types of conveyor belts: So, if you’re struggling with your knowledge of conveyor system terminology, or you just want to brush up (excuse the pun!) on what keeps your conveyors operational, the A-Z of Conveyor Belts is available here to download!

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