Grinding / Milling equipment

Jehmlich (Germany) REKORD B-SSt-ex

REKORD B-SSt-ex Sugar and Salt Milling Plant – Explosion Protected, with ATEX Relief Valve
-For installation and operation in ATEX dust zone 22
-Built entirely in stainless steel AISI 316L
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Compliance:
-EU Machinery Directive 2006/42/EC
-EU ATEX Directive 2014/34/EC
-EU Food Contact Directive EGV 1935/2004

Grinding Stock:
-Product: White crystal sugar or salt (from bags)
-Feed size: ≤ 1.5 mm
-Final size: 95% ≤ 20–30 µm, adjustable by speed and feed rate
-Throughput: 300–500 kg/h, depending on fineness

Pin Mill:
-Design size: 315 mm
-Housing: Pressure shock resistant, swing-out door with safety interlock
-Grinding elements: Pin rotor and stator
-Speed: 12,000 min⁻¹ / 200 m/s
-Drive motor: max. 22.5 kW; IE3
-Bearings: Heavy-duty, auto-lubricated
-Seal: Labyrinth gasket with sealing gas

Loading Hopper with Security Sieve & ATEX Rotary Valve:
-Volume: 100 L
-Stainless steel sieve (3.15 × 0.8 mm) removes lumps and impurities
-Adjustable feed rate, factory set for target throughput
-Pneumatic slide gate for fast outlet control
-Flame-tight rotary valve, ATEX certified
-Magnetic separator under valve
-Pneumatic conveying of sugar/salt to mill

Agitated Buffer Container with Filter:
-Free-fall discharge from mill to 200-L ATEX buffer (70–100 kg capacity)
-Equipped with agitator and level control (auto stop at fill limit)
-Pressure-shock resistant, protected by flame-free relief valve
-Pulse-Jet filter with differential pressure monitoring
-Compressed air system (tanks, tubes, valves) included
-Suction blower for continuous air transport and product flow; purified air vented outside

Discharge System:
-Screw conveyor with frequency-regulated drive
-Flame-tight discharge rotary valve (ATEX)
-Outlet for bag filling up to 55 kg or cart loading

Utilities:
-Power: ≈ 30 kW, 3~400 V, 50 Hz, IP 55, TN-C
-Compressed air (oil/water-free): 12–15 Nm³/h, ≥ 6.1 bar
-Control Unit:
-SIEMENS 15″ HMI and PLC S7-1200
-Ethernet data and error output to master control system
-Remote maintenance capability
-Drives: min. IP55, colour RAL 5017
-DANFOSS frequency inverters
*Control cabinet installed outside explosion zone