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SLUC Double-barrel Oil Filter Cart
1 Product Overview
SLUC Double-barrel Oil Filter Cart is the upgraded version of classic single-barrel LUC filter cart, a mobile two-stage serial pressure filtration equipment.Gear pump draws contaminated oil through inlet strainer to protect pump, then oil flows sequentially into primary and secondary filter vessels for gradient precision filtration. Solid particles are trapped by filter elements layer by layer, and clean oil flows out for tank circulation, oil filling and transfer. Dual-barrel serial design greatly increases total filtration area and dirt holding capacity with gentle differential pressure rise, suitable for medium & long-term continuous filtration. Pressure gauges reflect clogging status in real time; built-in relief valve ensures safe operation.
Classification Reminder
SLUC Double-barrel Oil Filter Cart: dual-barrel serial two-stage design, upgraded LUC model for moderately contaminated oil and long continuous filtration.
PFC Series Oil Purifier: standard single-barrel precision filter cart for general light contamination working conditions.
OUF10 Series Portable Oil Filter Trolley: large-flow single-barrel import alternative model mainly for oil transfer & system flushing.
High Solid Content Oil Purifier: heavy-duty high dirt-holding unit for overhaul with heavy sludge.
Ultra-precision Oil Purifier: submicron polishing unit targeting NAS3～6 ultra-high cleanliness.
Coalescence Dehydration Oil Purifier: coalescing unit with demulsification & water separation capability.
Plate and Frame Oil Filter: plate-frame filter adopting filter paper for bulk pre-filtration.
Vacuum Oil Purifier: integrated vacuum unit for deep water removal, degassing and demulsification.
2 Main Structural Composition
Mobile Base AssemblyPainted steel handcart frame, silent lockable wear-resistant casters, push handle and hose bracket.
Fluid Transfer UnitLow-pulse gear pump, 3-phase motor (explosion-proof optional).
Three-Stage Filtration SystemInlet metal strainer, primary filter vessel, secondary filter vessel and glass fiber precision elements.
Monitoring ComponentsInlet & outlet pressure gauges to monitor clogging differential pressure.
Safety Protection ComponentsBuilt-in relief safety valve and motor thermal overload protector.
Pipe AccessoriesOil-resistant suction & discharge hoses, standard fittings and vent valve.
3 Working Principle
Pre-pump Coarse Filtration & Pump Protection StageOil is sucked into gear pump and firstly passes metal strainer to intercept welding slag, rust and large metal chips to avoid pump abrasion.
Primary Preliminary Filtration StageOil enters the first filter vessel; relatively large solid particles are captured to reduce load and extend service life of secondary elements.
Secondary Deep Polishing StageOil flows into the second filter vessel to further trap micron-sized fine impurities. Oil purified by two-stage gradient filtration is delivered outward.
Oil Circulation & Filling StageClean oil is conveyed to target tank for continuous bypass circulation or direct tank-to-tank transfer and new oil pre-filtration.Contaminant accumulation gradually raises differential pressure. Shut down and replace elements once reaching threshold. Relief valve opens automatically to prevent pipeline overpressure when elements are fully clogged.
Note: Standard version removes solid particles only. Adsorption cartridges optional for free water removal. This unit cannot break emulsions; coalescing purifier shall be adopted for heavily emulsified oil.
4 Basic Technical Parameters
Models: SLUC-16 / 40 / 63 / 100Rated Flow: 16 / 40 / 63 / 100 L/minAccuracy Options: 3 / 5 / 10 / 20 / 30 / 40 μmOutput Cleanliness: NAS Class 6～10Applicable Media: anti-wear hydraulic oil, turbine oil, industrial gear oil, machinery lube oilViscosity Range:10～160 cSt (heater optional for high viscosity fluid)Max Working Pressure:0.6 MPaPower Supply: AC380V 3-phase 50Hz (explosion-proof control optional)Standard Seal: NBR, FKM optionalOperating Temperature:5～80 ℃Net Weight:65～130 kg
5 Core Product Advantages
Dual-barrel two-stage serial layout delivers higher dirt holding capacity than traditional single-barrel LUC filter cart, suitable for long-time uninterrupted circulation filtration.
Three-stage progressive filtration structure traps impurities step by step and lowers risk of fine particle penetration with stable purification effect.
Low-pulse gear pump features excellent self-priming capacity, supporting both offline bypass circulation and direct oil filling & transfer.
Integrated handcart design enables flexible relocation, multi-scenario application for multi-workshop and multi-equipment shift maintenance.
Pressure gauges monitor clogging visually; built-in overflow + motor overload dual protection ensures high operation safety.
Universal filter element specifications with low spare part cost, easy disassembly and single-person maintenance.
Explosion-proof version available to satisfy requirements for chemical, mining and flammable & explosive zones.
Mature reliable structure with low failure rate, widely applied for oil purification in power plants, metallurgy, construction machinery and machine tool industry.
6 Installation, Commissioning & Maintenance Specification
Place trolley on flat ground and lock casters. Lift suction pipe away from tank bottom sludge.Verify motor rotation direction before startup and fully vent air inside filter vessels and pipelines.Monitor pressure differential continuously. Replace complete set of elements timely once reaching replacement threshold to avoid secondary contamination caused by particle penetration.Cut off power and release pressure before element replacement. Clean internal sludge and inspect O-ring integrity.Drain residual oil and clean filter housings before long shutdown to prevent solidified contaminants.Fully flush piping before switching different oil types to avoid cross-contamination.
7 Common Faults & Solutions
Fast differential pressure rise, rapid element cloggingCauses: severe initial system contamination; suction of tank bottom sediment; over-fine element selectedSolutions: shorten circulation interval at early stage; lift suction inlet; match coarser pre-filter elements
Insufficient pump flow & weak suctionCauses: air leakage on suction line; clogged inlet strainer; high viscosity at low temperatureSolutions: tighten hose joints; clean inlet strainer; install pipeline heater for high-viscosity oil
Leakage at filter vessel cover flangeCauses: aged damaged O-rings; uneven bolt tightening torqueSolutions: install brand-new sealing parts; tighten bolts evenly diagonally
Poor filtration effect, cleanliness fails to reach targetCauses: broken filter elements; improper installation leading to oil bypass; insufficient element accuracySolutions: replace full set of elements; reinstall to ensure reliable sealing; adopt higher precision two-stage element combination
Excessive vibration & abnormal noiseCauses: air intake; low oil level; rigid pipeline resonanceSolutions: completely vent trapped air; raise oil level; optimize hose layout to reduce rigid vibration transmission
8 Standard Supply List & Optional Accessories
Standard Supply List
Mobile handcart frame, gear pump & motor assembly, inlet metal strainer, primary & secondary filter housings, glass fiber precision filter elements, relief safety valve, inlet/outlet pressure gauges, suction & discharge oil-resistant hoses, complete sealing set, flow direction nameplate, operation manual.
Optional Accessories
Explosion-proof motor & control cabinet, magnetic coarse filter assembly, fluid sampling valve, pipeline electric heater, extended hoses, quick disconnect couplings, FKM sealing kit and spare element packages.
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