Flake Hammer Crusher for Foundry Sand

The S37 Impact Sand Crusher is a high-efficiency spent sand crushing machine specially designed for foundry applications. It is primarily used to break down compacted or lumped spent sand (e.g., clay-bonded, resin-bonded, or sodium silicate sand) discharged from shakeouts, sand bins, or conveyors into loose particles with a size of ≤30 mm, ensuring uniform and free-flowing feed for downstream processes such as cooling, screening, reclamation, and mixing.

Featuring a high-speed rotating impact plate + fixed anvil liner crushing mechanism, the S37 offers compact design, high capacity (30–50 t/h), and reliable operation—widely used in medium-to-large foundries for automotive, rail, ductile iron pipe, and heavy equipment manufacturing.

Feeding: Compacted spent sand enters the crushing chamber through the top inlet.

High-Speed Impact Crushing: The main shaft rotates at 800–1200 rpm, driving multiple high-manganese steel impact plates. Sand lumps are thrown outward by centrifugal force and violently collide with high-chrome cast iron anvil liners fixed on the housing—achieving multi-stage crushing through impact, shear, and rebound.

Particle Size Control: Crushed sand exits through a bottom adjustable grate screen, with particle size controlled by screen aperture (typically Φ20–Φ40 mm) for consistent discharge.

Overload Protection: Equipped with mechanical or hydraulic safety devices—automatically unloads or shuts down upon foreign object entry (e.g., metal pieces, casting scraps), protecting the main shaft and impact plates.

High-Efficiency Crushing, Uniform Granularity
High-speed impact + multi-stage rebound mechanism crushes lumps up to 200 mm into ≤30 mm in one pass, with a crushing ratio up to 6:1—ensuring consistent output and no oversized residues.

Easy Maintenance, Efficient Servicing
Side-opening housing allows quick replacement of impact plates or screens without full disassembly. Centralized lubrication system for main shaft bearings—maintenance interval up to 500 hours.

Stable Operation, Low Noise
Dynamic balance grade G6.3 ensures minimal vibration. Standard sound enclosure keeps noise ≤85 dB(A), meeting workshop environmental standards.

Intelligent Monitoring (Optional)
Optional PLC system monitors motor current, bearing temperature, and vibration—automatically alarms and shuts down on anomaly, with remote data transmission capability.

Clay sand lines: Prevent elevator blockage by crushing large spent sand lumps

Resin sand reclamation: Break hardened lumps for efficient thermal/mechanical reclamation

Pre-cooling treatment: Enhance heat exchange in coolers

Sand bin discharge: Eliminate bridging for consistent feeding

Qingdao Dingli Machinery Co., Ltd. is a company specializing in the production of casting machinery equipment. It mainly manufactures equipment for casting clay sand, resin sand, coated sand, wet sand drying, lost foam casting, sodium silicate sand, etc. It can undertake various turnkey projects, including the design, manufacturing, installation and commissioning of mechanical sand processing. Our factory has strong technical strength and advanced processing equipment. We have long-term and close technical cooperation with many senior experts and scholars from domestic universities and research institutions. We can provide users with high-performance, reliable products and satisfactory services.
Our company adheres to the principles of promoting enterprise development through technology, prioritizing quality, continuous improvement and customer satisfaction. We are willing to sincerely cooperate with friends from all walks of life to achieve common prosperity.
Our company mainly undertakes the following projects:
20-180t/h mechanized clay sand processing production line and single machine equipment turnkey project.
Annual production of 1000 to 20,000 tons of consolidated resin sand casting mechanized production line and single machine equipment turnkey project.
Annual production of 3,000 to 10,000 tons of hot processing coated sand complete equipment and single machine equipment turnkey project.
Annual production of 3,000 to 7,000 tons of hot coating sand regeneration complete equipment and single machine equipment turnkey project.
5-15t/h sodium silicate mechanical production line and single machine equipment turnkey project.
5-30t/h three-stage sand drying equipment and single machine equipment turnkey project.
5-40t/h lost foam casting complete equipment and single machine equipment turnkey project and other types of shot blasting cleaning equipment, lifting equipment, conveying equipment, cooling equipment, magnetic separation equipment, environmental protection dust removal equipment.
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