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 mold ascends gracefully to a designated height, it elegantly descends, propelled by its own weight, to the base of the streamlined box. A harmonious interplay of impact and friction guides the sand mold and casting to a perfect separation, channeling them efficiently along the spiral plates towards the simplified box grid. The sand transitions smoothly into the old sand system, while the casting is efficiently dispatched through the discharge port.
In the bustling sand-falling section of the foundry workshop, the seamless separation of sand molds from castings is crucial for maintaining the production flow and ensuring the superior quality of regenerated old sand. The ingenious spiral guide sand-falling system of the sand box has achieved remarkable advancements, enabling the non-destructive separation of castings and the precise recovery of old sand through its cutting-edge structural design and smart control technology. This article will offer an in-depth exploration of how this equipment empowers foundry companies to achieve pristine production environments, reduce costs, and boost efficiency by delving into its technical principles, process advantages, intelligent control, and industry applications. With three pivotal breakthroughs—efficient exploitation of gravitational potential energy, seamless lossless separation of castings, and intelligent regeneration of used sand—this equipment stands as a revolutionary technical solution for modern foundry operations.
1. Technical principle and core component design
Leveraging the physical properties of sand molds (compressive strength 0.8-1.2MPa) and castings (weight 50-5000kg), this system delivers unparalleled separation efficiency through the harmonious synergy of gravitational impact and spiral guidance:
Rotation and tipping mechanism:
Empowered by a precision servo motor, the sand box rotates effortlessly to a predetermined angle between 45°-75° (with a precision error of ±0.5°), ensuring that castings and sand molds impact the simplified box's bottom plate under the influence of gravity acceleration (4.5-6m/s²), achieving an impressive initial separation efficiency of 98%.
The base of the simplified box is fortified with AR450 wear-resistant steel plate (20mm thick), enhancing its impact resistance threefold and promising a robust service life exceeding 5 years.
Spiral guide system:
Ingeniously designed multi-layer involute spiral plates (with pitches ranging from 300-800mm) skillfully guide the sand flow into a dynamic vortex motion, facilitating secondary crushing through particle friction (friction angle 32°-35°). The residual molding sand is minimized to less than 0.5kg.
The guide plate's surface is enhanced with a laser-clad tungsten carbide coating (0.2mm thick), reducing the friction coefficient to a remarkable μ<0.15, making it versatile for various molding sands, including resin sand and water glass sand.
Intelligent sorting module:
The old sand outlet boasts a sophisticated double-layer vibrating screen (aperture Φ5mm/Φ0.2mm) that meticulously separates iron bean impurities (>5mm) and micro powder (<0.2mm), achieving an impressive old sand regeneration qualified rate of over 95%.
The casting slide is equipped with a state-of-the-art visual inspection system (5 million pixels) to accurately assess the integrity of the casting in real time, with defective products being automatically redirected to the rework line.
2. Process advantages and economic benefits
Compared to traditional vibrating sand-falling machines, this innovative system marks a quantum leap in efficiency through its energy-optimized and modular design:
Improved separation quality:
The residual sand on the casting surface is reduced to an impressive less than 0.3g/cm², representing an 80% reduction compared to pneumatic impact equipment, significantly lowering subsequent cleaning costs by 60%.
The loss on ignition (LOI) of old sand is meticulously controlled to ≤3.5%, boosting the reuse rate to an impressive 92%, and reducing the need for new sand replenishment by 50%.
Record-breaking low energy consumption:
The system boasts an outstanding utilization rate of gravitational potential energy, reaching 85%, and the power consumption per ton of casting separation is impressively low at ≤1.2kW·h, delivering a remarkable 45% energy savings compared to traditional vibrating sand-falling machines.
Experience a breakthrough in noise reduction with our cutting-edge design, ensuring impact noise levels remain at a subtle ≤78dB(A). Revel in a cleaner environment, as our system maintains dust concentrations at less than 5mg/m³. Additionally, enjoy significant savings as our environmental protection costs are slashed by a remarkable 70%.
State-of-the-Art Intelligent Operation and Maintenance System:
Our advanced predictive maintenance module is a game-changer, providing real-time monitoring of bearing temperature, with an alarm threshold of 85ºC, and a comprehensive analysis of the vibration spectrum. This sophisticated system ensures that potential faults are detected and addressed up to 7 days in advance, offering unparalleled peace of mind and operational efficiency.
Embrace the future with our innovative digital twin platform that precisely simulates the optimal tipping angle for varying casting weights ranging from 100 to 3000kg. This ensures that the separation efficiency fluctuation rate is exceptionally low, at less than 2%. This advanced technology guarantees superior performance and reliability in every operation.
Certifications
Factory Panorama

Factory Address
QINGDAO SANZHUJI
Pioneers in sand casting machinery, Qingdao Sanzhuji has been at the forefront for 14 remarkable years. We are masters in crafting comprehensive solutions, encompassing the green sand casting production line, advanced furan resin sand casting, innovative lost foam casting, and specialized coated sand steel sand buried casting production line.
Contact Us
Address: Nestled north of the G204 National Road, amidst the innovative hub of Poli Town, West Coast New Area, Qingdao, China, our facility epitomizes convenience and strategic accessibility.