Product Parameters
Model |
Efficiency of production:T/H |
Dust removal air volume:m³/H |
Motor power:Kw |
L3210 |
10-12 |
5000-8000 |
7.5 |
L3214 |
16-25 |
8000-12000 |
11 |
L3216 |
25-40 |
12000-18000 |
18.5 |
L3218 |
40-60 |
16000-25000 |
30 |
L3220 |
60-80 |
20000-30000 |
37 |
L3224 |
80-100 |
25000-35000 |
45 |
L3226 |
100-140 |
30000-40000 |
55 |
Detailed Photos
Product Description
As the sand box's mold gracefully rotates to a precision height, it elegantly descends into the bottom of the box, guided by gravity's gentle pull. Through harmonious impact and friction, the mold and casting separate gracefully and journey towards the simplified box grid following the spiral plates' path. The sand smoothly transitions into the old sand system, while the casting is seamlessly expelled through the discharge port.
In the sand separation section of the foundry workshop, the seamless extraction of sand molds and castings is pivotal to boosting production speed and ensuring high-quality regeneration of old sand. The spiral guide sand separation system within the sand box heralds a double breakthrough in non-destructive separation of castings and precision recovery of old sand, thanks to its revolutionary structural design and cutting-edge intelligent control technology. This article delves into how this remarkable equipment empowers foundry companies to usher in clean production, minimize costs, and maximize efficiency through its technical principles, process advantages, intelligent control, and industry applications. Boasting three key breakthroughs: optimal utilization of gravitational potential energy, non-destructive casting separation, and smart regeneration of used sand, this technology represents a groundbreaking solution for the modern foundry industry.
1. Technical principle and core component design
Leveraging the intrinsic properties of sand molds (compressive strength 0.8-1.2MPa) and robust castings (weight 50-5000kg), the system achieves superior separation through the combined forces of gravitational impact and spiral guidance:
Rotation and tipping mechanism:
Propelled by a high-performance servo motor, the sand box pivots to a meticulously calculated angle of 45°-75° (precision ±0.5°). As gravity accelerates the castings and sand molds (4.5-6m/s²), they strike the base plate of the simple box, achieving an impressive initial separation efficiency of 98%.
The simple box’s foundation is fortified with an AR450 wear-resistant steel plate (20mm thick), amplifying impact resistance threefold, ensuring a prolonged service life exceeding five years.
Spiral guide system:
Ingeniously designed, multi-layer involute spiral plates (pitch ranging from 300-800mm) channel the sand flow into a captivating vortex motion. With precision, secondary crushing occurs as particles engage in friction (friction angle 32°-35°), leaving a negligible molding sand residual rate of under 0.5kg.
The guide plate's surface is masterfully laser-clad with a tungsten carbide coating (0.2mm thick), significantly minimizing the friction coefficient to μ<0.15, perfectly accommodating diverse molding sands like resin and water glass sands.
Intelligent sorting module:
A double-layer vibrating screen (apertures Φ5mm/Φ0.2mm) at the old sand outlet proficiently separates iron bean impurities (>5mm) and micro powder (<0.2mm), ensuring an impressive old sand regeneration qualification rate of over 95%.
Equipped with a state-of-the-art visual inspection system (5 million pixels), the casting slide continuously monitors casting integrity, automatically directing defective products to the rework line for seamless quality assurance.
2. Process advantages and economic benefits
In stark contrast to traditional vibrating sand-falling machinery, this system signifies a revolutionary leap in efficiency, driven by astute energy optimization and a sophisticated modular design:
Improved separation quality:
With the casting surface retaining less than 0.3g/cm² of residual sand—a remarkable 80% reduction compared to pneumatic impact equipment—the subsequent cleaning costs plummet by an impressive 60%.
By maintaining the loss on ignition (LOI) of old sand at ≤3.5%, the system elevates the reuse rate to a commendable 92%, slashing new sand replenishment needs by an impressive 50%.
Record-breaking low energy consumption:
Harnessing the power of gravitational potential energy to an extraordinary 85% efficiency, the system reduces power consumption per ton of casting separation to a mere ≤1.2kW·h, achieving a remarkable 45% energy saving when set against traditional vibrating sand-falling machines.
Experience the pinnacle of performance with our Customized Drum Sand Dropping Machine, engineered to minimize environmental impact and promote sustainability. Revel in the tranquility of operations with an impressively low impact noise of ≤78dB(A). Coupled with an exceptionally low dust concentration of <5mg/m³, witness a groundbreaking reduction in environmental protection costs by an astonishing 70%.
Immerse yourself in the future of automation with our cutting-edge Intelligent Operation and Maintenance System:
Our advanced predictive maintenance module is at the forefront of innovation, vigilantly monitoring bearing temperatures with a precise alarm threshold of 85ºC. Additionally, it meticulously analyzes vibration spectrums in real-time, providing a proactive, 7-day advance warning of potential faults, ensuring seamless and uninterrupted operations.
Harness the power of precision and accuracy with our state-of-the-art digital twin platform. This revolutionary technology simulates the optimal tipping angle for various casting weights ranging from 100 to 3000kg, achieving a remarkable separation efficiency fluctuation rate of less than 2%, ensuring consistent and superior performance.
Certifications
Factory Panorama

Factory Address
QINGDAO SANZHUJI
With an esteemed legacy of 14 years, Qingdao Sanzhuji Technology Co., Ltd. stands as a beacon of excellence in the realm of sand casting machinery production. Specializing across a wide array of innovative solutions, our portfolio includes the green sand casting production line, furan resin sand casting production line, lost foam casting production line, and the sophisticated coated sand steel sand buried casting production line. Our rich history reflects our commitment to quality and cutting-edge technology.
Contact Us
Address: Proudly located at the North of G204 National Road, Poli Town, West Coast New Area, Qingdao, China, our factory is positioned to serve you with the utmost convenience and accessibility.