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
Witness the seamless marvel of modern casting with Qingdao Sanzhuji Technology Co., Ltd.'s Customized Knockout Barrel. As the sand box mold gracefully ascends to a designated height, it descends smoothly into the streamlined box, aided by its own weight. This gentle ballet of impact and friction ensures an impeccable separation of sand molds from castings. Guided by spiral plates, the sand is efficiently allocated to the old sand system, while the castings make their grand exit through the discharge port, ensuring a flawless operation that embodies precision and expertise.
In the bustling heart of the foundry workshop's sand-falling section, the artful separation of sand molds from castings is key to maintaining productivity and the pristine quality of old sand. The sand box's spiral guide system is a testament to innovation, achieving dual breakthroughs in non-destructive separation and precise old sand recovery, all thanks to its avant-garde structural design and intelligent control technology. Delve into how this advanced equipment empowers foundries to pursue immaculate production, slash costs, and enhance efficiency, powered by three pivotal breakthroughs: harnessing gravitational potential energy, achieving lossless casting separation, and pioneering intelligent old sand regeneration. This cutting-edge solution sets the new standard for modern foundries.
1. Technical principle and core component design
Harnessing the inherent properties of sand molds (compressive strength 0.8-1.2MPa) and castings (weight 50-5000kg), this system masterfully employs the synergy of gravity impact and spiral guidance to achieve remarkable separation efficiency:
Rotation and tipping mechanism:
Driven by a precise servo motor, the sand box gracefully rotates to a precise angle of 45°-75° (error ±0.5°), allowing castings and sand molds to impact the simple box's bottom at an accelerated gravity speed of 4.5-6m/s², boasting an impressive initial separation efficiency of 98%.
The simple box's bottom is fortified with AR450 wear-resistant steel (20mm thick), tripling the impact resistance and extending the service life beyond 5 years, fortifying durability and longevity.
Spiral guide system:
The multi-layer, involute spiral plates (pitch 300-800mm) orchestrate a vortex motion of the sand flow, achieving secondary crushing through inter-particle friction (friction angle 32°-35°), with molding sand residue minimized to less than 0.5kg.
The guide plate's surface is adorned with a laser-clad tungsten carbide coating (thickness 0.2mm), ingeniously reducing the friction coefficient to μ<0.15, making it versatile for various molding sands like resin and water glass sand.
Intelligent sorting module:
The old sand outlet is equipped with a dynamic double-layer vibrating screen (aperture Φ5mm/Φ0.2mm), efficiently separating iron impurities (>5mm) and micropowder (<0.2mm), ensuring an impressive old sand regeneration qualified rate of over 95%.
The casting slide is enhanced with a state-of-the-art visual inspection system (5 million pixels), continuously monitoring casting integrity in real-time, with defective items automatically rerouted to the rework line.
2. Process advantages and economic benefits
Setting a new benchmark in efficiency, this system outshines traditional vibrating sand-falling machines with its energy-optimized and modular design, heralding a leap forward in operational performance:
Improved separation quality:
The casting surfaces boast a residual sand amount of less than 0.3g/cm², an impressive 80% reduction compared to pneumatic impact systems, drastically cutting subsequent cleaning costs by 60%.
With the loss on ignition (LOI) of old sand tightly controlled at ≤3.5%, the reuse rate soars to 92%, and new sand replenishment needs are halved, demonstrating significant cost savings.
Record-breaking low energy consumption:
Achieving an exceptional gravitational potential energy utilization rate of 85%, the system's power consumption per ton of casting separation is ≤1.2kW·h, delivering a remarkable 45% energy saving compared to its vibrating sand-falling counterparts.
Experience unparalleled tranquility with our Customized Knockout Barrel, as its impact noise remains impressively at or below 78dB(A). Breathe easy with a dust concentration meticulously maintained at less than 5mg/m³, all while cutting down environmental protection costs by a remarkable 70%.
Revolutionize your operations with our Intelligent Operation and Maintenance System:
Our state-of-the-art predictive maintenance module vigilantly monitors bearing temperature, alerting you with an 85ºC alarm threshold, and closely observes the vibration spectrum in real time. Rest assured with advanced warnings of potential faults, delivered a full 7 days in advance, allowing you to act proactively.
Unleash the power of precision with our cutting-edge digital twin platform, which meticulously calculates the optimal tipping angle for various casting weights ranging from 100 to 3000kg. Enjoy remarkable efficiency, with fluctuation rates in separation efficiency finely honed to less than 2%.
Certifications
Factory Panorama

Factory Address
QINGDAO SANZHUJI
With over 14 years of expertise, Qingdao Sanzhuji Technology Co., Ltd. excels in crafting top-of-the-line sand casting machinery. Our diverse portfolio includes green sand casting production lines, furan resin sand casting production lines, innovative lost foam casting production lines, and advanced coated sand steel sand buried casting production lines.
Contact Us
Address: Nestled in the vibrant West Coast New Area of Qingdao, China, you will find us at the north side of G204 National Road, Poli Town - a hub of innovation and excellence.