Vibratory grizzly screens improve productivity by separating coarse material.
Screening dissimilar-sized material for efficient downstream processing.
Vibratory grizzly screens separate oversized material from smaller, on-spec particles. The grizzly fingers allow on-spec particles to pass through, sending over-sized material into downstream processes. They can be installed under truck unloading stations, hoppers, or downstream of vibratory feeders and belt conveyors.
JVI grizzly screens are a heavy-duty solution for efficiently screening dissimilar sized material. Separating oversized particles from the desired sized particles allows for efficient downstream processing of the oversized particles.
Grizzly fingers separate the on-spec particles, sending over-sized material into downstream crushers.
Heavy-duty construction.
For over 30 years, JVI has been delivering grizzly screens to customers across North America and around the world. JVI vibratory grizzly screens are used widely across several industries, including mining & aggregates, steel, recycling, and more.
JVI vibrating grizzly screens are built for continuous operation and durability.
Grizzlies handle high volumes of material, making them suitable for large-scale processing at high throughput rates.
Each grizzly screen is driven by two heavy-duty electromechanical unbalanced motors or optional exciter drive gear boxes short-coupled to a single AC motor. JVI grizzly screens are versatile and can be configured to handle a wide range of applications.
BACKED BY OVER
30 YEARS
OF EXCELLENCE
Founded in 1991, JVI Vibratory Equipment is field-proven for delivering low-maintenance, reliable equipment solutions for bulk material processing.
Our in-house team of engineers with extensive process knowledge, combined with stringent manufacturing and product testing procedures, delivers quality products that meet the exact requirements of each application. Let us know how we can help you:
Coarse screening for heavy-duty applications. Custom-designed to fit each application.
Every application presents its own challenges. The type and amount of material to be screened and environmental conditions vary for each JVI customer.
Our engineering team works closely with customers to provide a completely custom vibrating grizzly screen solution designed to handle your exact material and environmental conditions.
From grizzly bar spacing to liner materials, JVI ensures that every grizzly screen delivered meets the specific heavy-duty demands of each application.
JVI grizzly screens driven by two electromechanical unbalanced motors.
The JVI Material Testing Lab allows for testing of the bulk material properties in a customer’s application.
With this data, JVI engineers evaluate the screen-ability of the bulk material and optimize for screening efficiency.
Vibratory Grizzly Screen in Action
This video shows the grizzly separator bars separating coal by size into different types: course “overs” that feed across the screen and the fines that fall through.
Cascading grizzly “fingers” turn over material and separate it by size.
Grizzly screens and crushers: a perfect pair.
A vibrating grizzly screen upstream from a crusher reduces wear and extends the crusher’s operating life. Grizzly screens feed material across the complete width of the crusher’s inlet, eliminating uneven wear of the crusher. It also separates out “thru” material, ensuring the crusher only processes the “overs.”
This provides two valuable benefits. First, it extends the operating life by reducing the amount of material it processes. Second, it allows for a smaller sized crusher to be used, saving on initial capital investment and operating costs.
Dual-deck grizzly screen for the recycling industry.
Vibrating grizzly fingers screen and feed materials efficiently.
Grizzly screens use a series of cascading grizzly bars or “fingers” to turn material over (for more efficient screening) and separate it by size into different types: course “overs” that feed across the screen and “thrus,” that fall through.
Grizzlies are a heavy-duty solution to efficiently screen and feed dissimilar-sized material. After removing the fines for processing, oversized material is fed into downstream equipment.
Simple, single mass design. High quality manufacturing.
Hallmarks of JVI vibrating grizzly screens:
Single mass technology eliminates natural frequency tuning issues, minimizes moving parts, and ensures the ability to handle wet, sticky, or frozen material.
Robust design and rugged construction for handling abrasive products with continuous operation in harsh conditions.
Minimal Part Design = Higher Run Time
By engineering a simple design with fewer moving parts, JVI grizzly screens keep working continuously, even in the harshest industrial environments.
Single mass design simplifies construction for a more durable, longer life that is also easier to maintain.
Process Flexibility
JVI vibrating grizzly screens typically run on a variable frequency drive (VFD), which provides starter and braking functions for smooth shutdown, local keypad operation, or remote interface with PLC. Additionally, the feed rate can be electronically adjusted to dial in the optimal throughput for the process and downstream equipment.
Wear Liners and Trough Covers
JVI grizzly screens are available with various types of abrasion-resistant and corrosion-resistance liners. Depending on the application, JVI engineers will recommend the optimal wear liner product. Common offerings include heat treated mild steel, chrome carbide overlaid, UHMW, rubber, and ceramic wear liners. All are available in bolted arrangements for ease of replacement.
Explosion-Proof Certification
JVI vibrating grizzly screens can be supplied with CSA certification for Class II, Division I, Groups E, F & G dust explosion areas or ATEX certified unbalanced motors.
JVI Project Gallery
