Introduction: A hydraulic lifting vacuum emulsifier changes end-of-batch work on a cosmetic cream line by raising the main tank cover and homogenizing head clear of the vessel.
In a contract cream plant running several 50L to 100L batches in one room, the schedule is usually set less by homogenizer speed than by discharge, wall scraping, and cleaning between formulas. The practical decision is whether the lifting structure, three-tank layout, base type, and control package fit the cream viscosity range, floor layout, headroom, and changeover rhythm of that workshop.
Cream is not a thin lotion. At the higher end of the cosmetic viscosity range, often 200 to 100,000 cP, a finished cream does not flow out of a tank on its own. It clings to the wall, sits on the bottom head, and must be scraped and pushed toward the outlet. That physical behavior turns changeover into the bottleneck. In a workshop with a tight weekly schedule, every extra minute spent reaching into a tank is a minute the homogenizer is not making product, and the same operator often has to weigh and pre-melt the next batch. Fixed-lid machines make this worse. The head, the homogenizing shaft, and the lid all sit over the tank opening, so cleaning happens through a narrow hatch or around the equipment rather than from directly above an open tank. Cosmetic GMP guidance treats accessible, cleanable surfaces as a basic principle because surfaces an operator cannot easily see or reach can carry residue into the next formula. When a plant runs many small batches instead of a few large ones, that residue risk repeats every few hours, and slow changeovers multiply with it. A fixed-lid vessel can save floor space and simplify the frame, while a lifting structure gives faster access at the cost of headroom and a hydraulic maintenance routine.
The PMK-A 50L/100L is a pilot and small-batch hydraulic lifting vacuum emulsifier with three tanks: a main emulsifying tank, a water phase tank, and an oil phase tank. The hydraulic column is mounted on the frame and raises the main tank cover together with the mixing and homogenizing assembly. The lift pump is rated 0.75kW on the 50L model and 1.1kW on the 100L model. These are modest ratings because the pump moves the head assembly, not the tank itself. The mechanical benefit is simple: the equipment clears the operator’s path instead of the operator working around a closed vessel.
With the cover and homogenizing head raised clear of the rim, the full tank opening becomes a working space. An operator can stand over the tank, scrape the wall with a paddle, scoop finished cream into buckets or a transfer container, and rinse the interior from above. Cleaning the wall, the bottom head, and the scraper frame follows the same open path. That access is why lifting structures are common on multi-product pilot lines that change formula often. The 4/3/3 mm shell—inner wall, jacket, and outer cover—gives a rigid, dimensionally stable tank, so repeated scrape-down with a hand tool does not flex the vessel. A changeover from a dense night cream to a lighter lotion benefits because the operator can see the entire wetted surface and direct rinse water to the bottom outlet. The lift unit still needs ordinary preventive care: clean hydraulic oil, periodic seal inspections, and hose checks. That maintenance is a planned task rather than an unexpected repair, and the open tank position also lets one operator inspect the seal area before the next batch is charged.
The lift changes access, while cream stability still comes from controlled mixing and vacuum. Main mixing runs at 0–63 rpm, deliberately slow for thick material, and a separate wall-scraping motor turns in the opposite direction to keep product moving off the wall and back into the batch. This matters once a cream is thick enough to sit still on its own. The high-shear homogenizer handles droplet-size reduction, and the vacuum pulls entrained air out of the batch instead of letting it set into the finished cream as pinholes. Under specific formula and process conditions, the homogenizing system is stated to reach micron-level particle size, down to around 1 μm. The water and oil phase tanks—40L and 20L on the 50L model, 80L and 40L on the 100L model—let operators melt and disperse each phase separately before transfer into the main tank, so the main vessel spends its time emulsifying rather than waiting on pre-melt. This three-tank layout uses more floor space and utility connections than a single tank, but it protects the emulsifying step from the slower preparation work and gives the pilot team a clearer view of phase temperature before the main batch is combined.
Base selection is where plant layout becomes concrete. A fixed bracket is the simplest and most stable option, and it suits a machine that stays in one spot in a dedicated pilot bay. A weighing system with adjustable leveling feet adds batch weight measurement and lets the frame sit level on an uneven floor. Movable casters turn the unit into something that can be rolled between rooms, useful when a workshop shares pilot equipment between an R&D area and a small production area. Each option trades stability and floor space against mobility, so the useful question is how the machine will be used on an average production day. Viscosity and controls drive the rest. A thicker cream needs the wall scraper and the homogenizer working together, and it needs the slow main mix to keep the batch circulating without whipping in more air. The control level—PLC touch screen, pneumatic, semi-automatic, or manual—mainly decides how repeatable each batch and each changeover is. A PLC recipe makes it easier to hit the same ramp and hold points on every run, while a manual panel keeps the operator in charge of each step. Explosion-proof control options are relevant when the formula includes volatile solvents or alcohol-based ingredients. Lifting the cover requires clear vertical travel, so ceiling height, mezzanine beams, and room layout belong in the specification review; final headroom for a selected model is confirmed against the actual bay. The design follows GMP hygienic design principles, and main line equipment carries CE certification. Pre-shipment testing and a one-year free warranty are part of the service package, while cleaning time, final layout, and commercial terms belong to the same project review based on real batch size, viscosity range, and utility supply.
A hydraulic lifting vacuum emulsifier earns its place on a cream line for a plain reason: it moves the equipment out of the operator’s way when the batch ends. Discharge, scrape-down, and cleaning happen over an open tank instead of around a closed one, which is what a workshop running multiple small cream batches needs. To turn that into a configuration direction, send your batch size, the viscosity range of your thickest cream, your floor layout and available headroom, your power supply, and whether you prefer PLC control or a simpler panel. The three-tank layout, base options, and control variants can then be matched to your process before anything is built.
A：The lift raises the cover and homogenizing head away from the tank rim, which turns the full opening into the discharge and cleaning access point. An operator can scrape the wall, move finished cream toward the outlet or into transfer containers, and rinse the interior from above without reaching around a closed lid.
A：These models are configured for thick material: main mixing runs at 0–63 rpm, a separate wall-scraping motor keeps product moving off the wall, and the high-shear homogenizer reduces droplet size. Final particle size and cycle time are set by the formula, viscosity, and validated process settings.
A：Both base types exist. A fixed bracket suits a dedicated pilot bay and gives the simplest stable mounting. A weighing base with adjustable leveling feet adds batch weight data and helps level the frame. Casters fit a shared pilot unit that moves between rooms. The choice follows how often the machine changes location and how much floor stability the process needs.
Good Manufacturing Practice (GMP) Guidelines/Inspection Checklist for Cosmetics | FDA
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