PFL Series Vertical Compound Crusher (Vertical Composite Fine Crushing Machine)

The PFL Series Vertical Compound Crusher, also known as a vertical composite crusher, is a high-efficiency fine crushing machine that integrates the working principles of hammer crushing and impact crushing into a single compact structure. It is designed to deliver high reduction ratios, stable performance, and excellent cost efficiency, particularly for small and medium-sized crushing projects where investment cost, footprint, and process simplicity are critical considerations.

Through its unique vertical rotor configuration, the PFL Series enables materials to undergo multiple crushing actions within a single machine, including high-speed hammer impact, inter-particle collision, and grinding against impact liners. This compound crushing mechanism significantly improves fine crushing efficiency and makes the machine especially suitable for processing medium to low hardness, brittle materials.

The PFL Series is commonly used as secondary or tertiary crushing equipment, reducing feed sizes typically below 100 mm into fine products in the 0–5 mm range. It is also frequently applied as a small-scale sand making unit or as a pre-grinding machine before milling processes.

The PFL Series Vertical Compound Crusher adopts a vertical shaft design with centrally fed material. Raw material enters the machine from the top and falls into the crushing chamber, where it is immediately subjected to the action of a vertically mounted high-speed rotor.

The rotor is equipped with multiple rows and layers of hammer heads hinged to the rotor discs. During rotation, centrifugal force causes the hammer heads to extend outward radially. As material contacts the hammer heads, it is crushed by strong impact forces and thrown against the surrounding impact liners mounted along the inner wall of the cylindrical housing.

Inside the crushing chamber, material follows a vortex-like movement path, repeatedly colliding with hammer heads, liners, and other particles. This multi-stage crushing process—combining impact, collision, and grinding—continues until the material reaches the required size and exits the crusher by gravity through the discharge zone.

Product size can be adjusted by regulating the gap between the hammer heads and the circumferential impact liners, providing flexible control over final output fineness.

Vertical Cylindrical Frame
The main structural body of the machine, fabricated from welded steel plates and lined internally with wear-resistant liners to withstand continuous impact and abrasion.

Vertical Rotor Assembly
The core working component, consisting of a vertical main shaft, rotor discs, hammer shafts, and multiple rows of hammer heads. The rotor is dynamically balanced to ensure stable operation at high rotational speeds.

Hammer Heads
Hinged wear components mounted on the rotor, responsible for the primary impact crushing of incoming material. Multiple layers increase crushing frequency and efficiency.

Impact Liners
Adjustable liners installed circumferentially along the inner wall of the housing. These liners form a high-efficiency crushing chamber together with the hammer heads and allow output size control.

Vortex Crushing Chamber
A specially designed internal space that promotes material circulation and repeated crushing, improving fine crushing efficiency and reducing oversized particles.

Drive and Lubrication System
The vertical shaft is driven by an electric motor via belt transmission or direct coupling. A dedicated lubrication system ensures reliable operation of the upper bearing under demanding conditions.

Adjustment Mechanism
Allows precise regulation of the clearance between hammer heads and impact liners, enabling flexible control of product size.

The PFL Series Vertical Compound Crusher is primarily intended for small and medium-sized fine crushing projects, particularly where space and investment budgets are limited.

Sand and Aggregate Industry
Fine crushing of limestone, bluestone, and similar materials in small aggregate plants, producing manufactured sand or fine aggregates.

Building Materials and Ceramics Industry
Crushing of clay, shale, coal gangue, and other raw materials used in brick, tile, and ceramic production.

Chemical and Metallurgical Industry
Processing of coke, dolomite, fluorite, and other medium to low hardness industrial materials.

Mining Auxiliary Operations
Fine crushing of non-metallic ores or as an auxiliary fine crusher in small-scale mining applications.

The PFL Series Vertical Compound Crusher is suitable for medium to low hardness, brittle, and non-sticky materials, including:

Limestone

Marl

Gypsum

Coal

Coke

It is not recommended for high hardness materials such as granite or basalt, nor for materials with high abrasiveness or strong stickiness, as these conditions may cause excessive wear or unstable operation.

Low Investment Cost and High Cost Performance
Compared with cone crushers of similar capacity, the PFL Series features a simpler structure and significantly lower purchase cost. The absence of grate bars reduces maintenance complexity compared with traditional hammer crushers.

High Reduction Ratio with Adjustable Output Size
Compound crushing action enables reduction ratios exceeding 30:1. Output fineness can be adjusted by regulating liner clearance or selecting appropriate hammer configurations.

Compact Structure and Small Footprint
The vertical layout minimizes installation space requirements, making it ideal for sites with limited available area.

Stable Operation with Relatively Low Energy Consumption
A higher proportion of inter-particle crushing improves energy utilization compared with conventional hammer crushers.

Improved Tolerance to Moist Materials
The grate-free design reduces the risk of blockage when processing materials with slightly higher moisture content.