The QMS screening range is engineered to the highest standard manufactured in the UK using heavy-duty, high-quality materials throughout to deliver maximum throughput and strength through its operational lifetime.
The SVI-Inclined and SVH-Horizontal screens are designed for use in applications including sand & gravel, crushed stone, coal, concrete, recycled materials and iron ore. Further enhancing efficiency in producing high quality materials is the ability of the screens to be fitted with bespoke washing systems tailored exactly to the requirements of the user.
Unwashed aggregate often contains contaminants that can weaken concrete mixes, reduce adhesion in asphalt, and cause failure in drainage applications. Through effective washing, screening systems remove impurities and improve grading ensuring that the end product is able to meet the required specification. By removing impurities such as dust, clay, and organic matter, washing enhances the strength and consistency of aggregates used in concrete, asphalt, and other building applications. Hence clean aggregates improve the workability and durability of constructions works, while also supporting efficient drainage and water management systems.
QMS washing plants are bespoke, specialised systems used to separate, clean, and size aggregates, producing high quality materials. The washing systems are used in conjunction with the QMS range of SVI and SH screens that have found a real niche in processing raw materials such as sand, gravel, crushed stone, slag, iron ore and recycled concrete. Their primary functions are to separate materials by size, remove impurities, and optimize production efficiency.
The key components of the QMS washing plants include material feeders to deliver raw materials to the plant that are evenly distributed using vibrating feeders for a consistent flow into the screening system. QMS SVI and SH screens then separate materials by size while scalping screens provide rapid separation and protect downstream equipment. The screens are fitted with sand washers or fine material washers that remove contaminants using water spray systems. These can be configured as inclined or horizontal, with single, double, triple or quad deck screens. Following screening and washing, the material is then stockpiled for use and/or further processing.
Dust proof vibration technology
The SVI-Inclined and SVH-Horizontal Screens drive mechanism consists of two MVU modular vibrators connected with a cardan shaft. These feature the most advanced dust proof cartridge design available. The extremely compact and interchangeable units are designed to make maintenance far easier compared to a conventional shaft design, with two bearings per vibrator, they also provide exceptional long bearing life. The vibratory mechanism is located at the centre of gravity, giving circular motion at all points of the screen.
There are three sizes of modular Vibrators available to cover the range of QMS screens. The standard size of the inclined screens ranges from 1.22 to 3.1m in width and 3.6 to 8m in length and are available in one to four deck arrangements. Available in standard and custom sizes, the horizontal screens feature two to four deck configurations, with sizes up to 7 × 2.4m, making them highly versatile for different applications. Bespoke designed screens can also be made to fit into existing structures.
With the inclined screens, the shaft line is positioned at the centre of gravity resulting in a perfect circular motion at all points of the screen. The screen can be constructed with an angle ranging from 12 to 22o, which combined with the circular motion, delivers enhanced screening efficiency for all types of applications such as primary, secondary, and final size screening. Adjustable counterweights allow for easy eccentric stroke adjustment to fine tune performance specific to the application requirements.
Compared with other circular motion screens, QMS screens provide maximum space between decks. This makes it easier, safer, and more comfortable for operators during maintenance intervals. Also making the screen maintenance friendly is that the QMS vibrating mechanism is an alloy steel shaft fitted with grease labyrinth seals and amplitude adjusted by moveable balance weights. This results in equally balanced forces ensuring that there is no bending movement at the side plate along with lower stress levels in the screen body. Optional high quality modular rubber liners at the feedbox, discharge spouts and shaft further provide optimal service life.
Easy maintenance and quick replacement of screening media, wear liners, and spare parts enable the maximization of uptime and improve the profitability of production. QMS screens also have a V-Belt drive equipped with safety guards and just one centralised conveniently located greasing manifold.
Productive and accurate screening at Cemex Pyford Brook Quarry
Highlighting the efficiency of its screening and washing plants is the QMS installation at the Cemex Pyford Brook Quary. The Pyford Brook Quarry has been built to produce sand and gravel at a relatively high production rate of 250tph. As the quarry is new, and until relatively recently physically did not even exist, this meant that QMS designed, manufactured, installed and commissioned the plant from scratch also incorporating a specialist MEP sand and gravel array. The screening plant had to not only be able to meet Cemex’s production targets, but also consistently produce the sizes required to make the quarry a profitable ongoing concern.
The QMS plant provides an initial feed to the grid along the belt feeder consisting of 150mm+ sand and gravel which is then crushed down by a cone crusher before going to a double deck polyurethane primary screen. A double deck washing screen then further processes the material to produce a -20mm product. The final product is then refined to be used in the manufacture of Ready-Mixed Concrete for use on HS2. QMS also supplied all the conveying and stockpiling equipment which is fully galvanised.
The full plant list QMS installed at the Cemex Pyford Brook Quarry consists of:
- Belt feeder – P/N FHB-20-1000, 20m3
- Cone crusher – P/N 13100_00, model B2
- Primary screen – P/N SVI-B02M, 1.83 x 5m double deck, polyurethane
- Secondary Screen – P/N SVI-G02M, 2.4 x 6.0m double deck, wash screen,
About Quarry Manufacturing & Supplies – Engineering with integrity
QMS has since its inception believed in exceptional engineering, designing, developing and delivering process solutions that support our customers in the quarrying, mining, recycling and demolition industries. QMS is recognised today as Europe’s premier manufacturer of aftermarket crusher spares, wears and bespoke processing equipment. We continue to set an ever-increasing standard, not only meeting the needs of our customers but also exceeding them, advancing a diverse range of industries through extensive product knowledge, innovation and exceptional engineering ability. Operating from our purpose-built facility in the heart of the UK, we have established a robust and efficient network for supporting customers across the globe, direct from our fully equipped manufacturing and repairs workshops. Alongside ongoing investment into new technologies, processes and supplier partnerships, we continue to raise the bar in exceptional service and outstanding value.
