Product Parameters
| Model |
Mating belt width:mm |
Loose wheel diameter:mm |
1# Loose Sand RPM:R/min |
2# Loose Sand RPM:R/min |
Motor speed:R/min |
Motor power:Kw |
| S355 |
500 |
480 |
682 |
800 |
1440 |
4 |
| S357 |
650 |
580 |
682 |
800 |
1440 |
7.5 |
| S358 |
800 |
580 |
573 |
679 |
1440 |
15 |
| S3510 |
1000 |
580 |
573 |
679 |
1440 |
18.5 |
Detailed Photos
Product Description
Installed above the sand conveying belt, it breaks up the green sand into loose state after mixing.
Used in green sand casting mechanized sand recycling production line, to loosen the mixed wet sand, or crushing the old sand after the separation of falling sand, used for the old sand crushing need to be docked dust removal pipeline.In the mechanized foundry sand recycling production line, the agglomeration of wet sand after sand mixing and the agglomeration of old sand at the sand drop station directly affect the air permeability of the molding sand (>80cm³/min) and the surface quality of the casting. As the core equipment of the sand processing system, the sand loosening machine is reshaping the sand processing process of the modern foundry workshop with its strong loosening, efficient crushing and intelligent dust removal capabilities. This article will deeply analyze how the sand loosening machine can help foundry companies achieve efficient regeneration and clean production of sand resources from the dimensions of technological innovation, process adaptability, environmental protection efficiency and intelligent control.
1. Process pain points and technological innovation
In response to the compaction problem of wet sand (water content 3-5%) after sand mixing and the crushing demand of old sand (containing core bone, iron bean impurities), the loose sand machine achieves technological breakthroughs through dual-mode crushing structure and modular design:
Wet sand loosening mode:
Rotary knife crushing system: 304 stainless steel staggered blade group (hardness HRC55-60) is used to cut sand blocks at a speed of 1200r/min, with a processing capacity of 60t/h. The bulk density of the loosened molding sand is ≤1.4g/cm³, and the air permeability is increased by 40%.
Dynamic screening module: Built-in Φ8mm aperture grid, synchronous separation of unbroken large particles (return rate <2%), to ensure the uniformity of the molding sand entering the conveyor belt (particle size standard deviation <0.15mm).
Old sand crushing mode:
Hammer impact mechanism: equipped with high manganese steel hammer head (impact toughness ≥120J/cm²), it can crush old sand groups containing iron beans (diameter ≤20mm), with a crushing efficiency of 45t/h and an iron impurity separation rate of >98%.
Magnetic pre-separation: A permanent magnetic roller (magnetic induction strength ≥1500Gs) is installed on the top to adsorb ferromagnetic impurities in advance and reduce the wear rate of the hammer head by 70%.
Intelligent switching technology:
One-button switching of wet sand/old sand processing mode through PLC control, the conversion time is less than 3 minutes, and it is suitable for intermittent and continuous production line layout.
2. Integrated solution for foundry sand processing line
The collaborative operation of the loose sand machine, conveyor belt and dust removal system builds an efficient sand processing ecosystem:
Space optimization design:
Adopting an inverted installation structure, it is directly erected above the B=800-1400mm belt conveyor, with a net height of ≤1.2m, saving 30% of the vertical space in the workshop.
The standard design of the inlet and outlet flanges (ISO 5211) allows seamless connection with the sand mixer and the old sand screening machine (connection error ±2mm).
Easy maintenance:
The quick-detachable cutter head and hammer bracket design allows the tool replacement to take less than 20 minutes;
The observation window and inspection door are opened with gas spring assistance, so a single person can complete daily maintenance.
3. Core advantages and economic benefits
The loose sand machine achieves a qualitative leap in foundry sand processing through material innovation and intelligent control:
Wear-resistant and long-lasting design:
The blade surface is laser-clad with tungsten carbide coating (thickness 0.3-0.5mm), which extends its life by 4 times that of ordinary blades;
The box lining can be replaced with ARQ wear-resistant steel plate (hardness HB450), reducing annual maintenance costs by 65%.
Energy consumption optimization:
The 55kW permanent magnet synchronous motor + variable frequency drive system saves 25% of electricity compared to asynchronous motors;
The power consumption of crushing 1 ton of molding sand is ≤0.8kW·h, which is 40% lower than that of traditional roller crushers.
Quality improvement data:
The compaction rate of the loosened sand fluctuates ≤2%, and the porosity defect rate of the castings is reduced from 3.8% to 0.5%;
The recycling rate of old sand is increased to 95%, and the amount of new sand added is reduced by 60%.
Certifications
Factory Panorama
Factory Address
QINGDAO SANZHUJI
Specializing in the production of sand casting machinery, including green sand casting production line, furan resin sand casting production line, lost foam casting production line, coated sand steel sand buried casting production line, the company has a history of 14 years since its establishment.
Contact Us
Address:North of G204 National Road, Poli Town, West Coast New Area, Qingdao, China
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