Vertical 4-Stage Mechanical Oil Mist Filter - Compact Stand-Mounted Unit

Description

Key Features

Format: function word + one quantified or scenario-based description.

• Four-stage mechanical filtration - Labyrinth baffle, stainless-steel wire mesh, medium-efficiency bag filter and HEPA element purify in series, each stage removing the band the previous stage has left behind.
• True vertical footprint - Only 700 x 750 mm on YS-OFP-M20, so the unit stands beside the machine or in a workshop corner instead of consuming a separate plant room.
• 2,000-8,000 m3/h in three models - YS-OFP-M20, YS-OFP-M40 and the twin-fan YS-OFP-M80 cover single machines up to small machining cells.
• No high-voltage components - Mechanical operation removes the power pack, insulator and arc-protection maintenance that electrostatic units require.
• Washable and reusable elements - The labyrinth baffle and wire mesh are washed and returned to service, and the bag and HEPA elements are changed on condition rather than to a fixed schedule.
• Quick-access maintenance door - Elements can be removed and replaced without dismantling ductwork, keeping downtime to a minimum.
• Low running cost - Optimised fan and airway design with a slow pressure-drop build-up keeps both electricity and consumable spend low.

Technical Specifications

Model comparison table:

General specifications (common to the range):

Materials & Finish

• Labyrinth baffle: corrugated metal baffle plate that impinges the air stream and throws the largest droplets onto a drainage surface, removing the heaviest fraction before it reaches the filter media.
• Wire mesh stage: 304 stainless-steel woven wire mesh. Washable, reusable and resistant to metalworking-fluid chemistry; it also protects the bag filter from chips and swarf carried through the duct.
• Bag filter: medium-efficiency synthetic bag element, sized for a long service interval and low initial pressure drop.
• Final element: HEPA-grade glass-fibre media that removes the sub-micron aerosol remaining after the mechanical stages.
• Cabinet: powder-coated cold-rolled steel sheet, with a quick-access door for element change and lifting points on the larger model.
• Material and surface-treatment certificates, together with filtration test reports, are available on request.

Assembly & Installation

The OFP-M Vertical Series is delivered as a factory-tested vertical cabinet with the fan and the full filter train installed. Installation is a straightforward one-day task on all three models.

1. Site preparation - Provide a level floor area of at least 700 x 750 mm (YS-OFP-M20) or 1,400 x 1,600 mm (YS-OFP-M80), with clearance in front of the access door and a 380 V / 50 Hz three-phase supply with earth.

2. Positioning - Stand the unit beside the machine tool, in a workshop corner, or on a fabricated platform where floor space is limited. Level and, where required, anchor the base.

3. Hood and duct connection - Connect the inlet to the machine enclosure, canopy hood or side-draft duct above the machining zone. Keep the duct run as short and straight as possible, and maintain duct velocity so that oil does not condense inside the duct.

4. Discharge connection - Route the outlet either to a return-air grille in the workshop or to an outdoor discharge point. On recirculating installations, verify that the HEPA final element is fitted and correctly seated.

5. Electrical connection and commissioning - Wire the fan through an isolator, confirm rotation direction and running current, and measure the airflow at the capture point. Record the initial pressure drop so that element replacement can be triggered by pressure, not by guesswork.

6. Operator training and handover - Demonstrate element removal, washing and replacement, drain emptying and fault indication, and hand over the maintenance schedule and spare-element list.

Tools required: standard hand tools and ducting materials; lifting equipment recommended for YS-OFP-M80 (400 kg). Typical installation time: 1 working day, excluding ductwork fabrication.

Applications

• CNC machine tools - Filters oil mist from lathes and machining centres using neat oil or water-miscible coolant.
• Grinding - Captures fine grinding oil mist and coolant aerosol close to the wheel.
• Machining centres - Removes oil smoke and mist from enclosed machining cells, allowing the cleaned air to be returned to the shop.
• Die casting - Filters release-agent mist and lubricant smoke over die-casting machines.
• Cold heading and forming - Captures lubricant mist from cold headers and forming presses.
• Centralized small systems - Several YS-OFP-M units can serve a machining bay where individual capture is preferred to a single large central plant.
• Quenching oil fume - mesh-belt furnaces, quenching oil tanks, bogie-hearth furnaces, pit furnaces and vacuum quenching furnaces
• Metal machining - hardening machines, cutting machines and other machine tools
• Foundry industry - all types of die-casting machines
• Rubber and plastics - pelletising, blown film, extrusion and asphalt product manufacturing
• Agricultural and food processing - frying, boiling, steaming and baking lines in food plants

Customization Options

• Airflow - Three standard models at 2,000, 4,000 and 8,000 m3/h; larger requirements are covered by the horizontal OFP-M range or a central system.
• Filter grade - HEPA final element as standard; alternative grades on request to match the required discharge cleanliness.
• Cabinet material - Powder-coated carbon steel as standard; 304 stainless steel on request.
• Voltage and frequency - 380 V / 50 Hz as standard; other voltages and frequencies for export markets.
• Colour - Standard machine grey; any RAL colour available on request.
• Mounting and ducting - Inlet and outlet orientations adapted to the site layout; supporting frame or wall-mount bracket on request.
• Branding - OEM nameplate, logo and packaging to buyer specification.

Certifications

• ISO 9001:2015 - Quality management system
• ISO 14001:2015 - Environmental management system
• ISO 45001:2018 - Occupational health and safety management system
• CE marking on export models
• National High-Tech Enterprise certification (China)
• Third-party inspection available through SGS / BV / Intertek
• Material test reports and filtration test reports available on request

Packing & Logistics

• Unit: wrapped in PE film with corner protection, secured on a wooden pallet or in a plywood case for sea freight.
• Filter elements: bag and HEPA elements packed separately in cartons with foam protection and supplied with each shipment where a spare set is ordered.
• Documentation: packing list, English operation and maintenance manual, and test report supplied with each shipment.
• Port of loading: Qingdao / Tianjin, China.
• Incoterms: FOB / CIF / CFR available.
• Loading reference: TBC - factory to confirm units per 20GP and 40HQ container by model.

FAQ

Q: How does a mechanical oil mist filter differ from an electrostatic one?

A: A mechanical filter removes oil mist by passing the air through progressively finer barrier media and trapping the droplets on the fibres. An electrostatic precipitator charges the particles and collects them on plates instead. Mechanical filtration needs no high-voltage power pack, which makes it simpler and more forgiving in wet, oily duty; electrostatic units handle very large airflows with lower pressure drop.

Q: Where should the unit be positioned?

A: As close to the machine as the layout allows, because short duct runs mean less oil condensing in the duct and less fan static pressure. The vertical layout exists precisely so that the unit can stand in the narrow strip beside a machine tool. Where floor space is genuinely unavailable, the horizontal OFP-M range or a central system is the better answer.

Q: How often do the filters need attention?

A: The labyrinth baffle and the stainless-steel wire mesh are washed and returned to service, typically on a monthly-to-quarterly cycle depending on machine load. The bag and HEPA elements are replaced on condition - the pressure drop measured across the unit tells you when. Always record the initial pressure drop at commissioning so that replacement is triggered by data rather than by guesswork.

Q: Can the filtered air be recycled back into the workshop?

A: Yes. With the HEPA final element fitted, the discharge air is clean enough to return to the shop, which is the main reason for choosing a four-stage mechanical filter on a machine that runs all year. On recirculating installations it is important that the elements are correctly seated and replaced on condition.

Q: Can several machines share one unit?

A: Each YS-OFP-M unit is normally dedicated to one or two machines. For a whole production bay or a larger group of machines, the horizontal OFP-M range or a central multi-station system is more economical - our engineers will compare the options for your layout.

Q: What is the minimum order quantity and lead time?

A: Minimum order quantity is one unit for standard models; customised and OEM configurations are quoted individually. Lead time depends on the model and quantity - please contact us for a confirmed schedule.

Q: What maintenance does the unit need?

A: Wash the baffle and wire mesh, replace the bag and HEPA elements on condition, empty the oil drain, and check the fan for balance and current draw. No high-voltage components mean no insulator or power-pack maintenance. A full schedule is supplied with the English operation and maintenance manual.

Commercial Parameters

Appendix - Shared Category Content

The section below is shared category-level content. It is identical in every product document of this category and only needs to be published once, on the category page.

Category: Oil Mist & Fume Purification Equipment

Category Introduction

Oil mist, coolant aerosol, heat-treatment smoke are the most persistent and least visible hazards in a modern metalworking plant. Every turning, milling, grinding, EDM, cold-heading, die-casting operation discharges a fine aerosol of metalworking fluid, metal oxide and pyrolysis products into the shop air. Most of these particles measure between 0.3 and 5 microns, which is small enough to stay suspended for hours, to travel the full length of a workshop with the general ventilation, and to reach deep into the lungs of operators working dozens of metres from the source. Left uncontrolled, the same aerosol coats machine tools, lighting and roof structure, degrades electrical cabinets, raises cleaning and maintenance costs, and creates a genuine fire and slip risk around the plant. In cold weather the problem becomes worse: as buildings are closed up and fresh-air rates are reduced to save heating energy, oil mist concentration in the breathing zone rises sharply, and the cost of the ventilation solution becomes a production issue rather than a compliance one. That is why oil mist and fume purification equipment has moved from being an optional accessory to a standard part of the machine-tool package in Europe, North America and, increasingly, in the Middle East and South-East Asia.

This product series is designed primarily for oil mist and oil fume with a high water content. Typical operating conditions are the machining industry, where water-miscible cutting fluids and coolants are used, together with the other wet or emulsified aerosol sources found in metalworking plants. Where the aerosol is predominantly water-based, the purification train is selected so that the moisture load does not degrade filtration performance or shorten element life, and so that the collected liquid can be drained and disposed of cleanly. Buyers should state the coolant type and the water-to-oil ratio of their process when requesting a selection, because it determines both the filtration stages and the drainage arrangement of the unit.

Occupational exposure limits are the main driver of demand. Metalworking fluids are associated with occupational asthma, hypersensitivity pneumonitis and dermatitis, and regulators have responded with progressively tighter limits on total particulate and oil mist in the breathing zone - typically 0.5 to 5 mg/m3 depending on jurisdiction. For welding, the target is usually hexavalent chromium, manganese and nickel compounds rather than the total fume mass, which is why filtration efficiency on the sub-micron fraction matters far more than a headline capture rate. Buyers should therefore expect a supplier to quote efficiency at a stated particle size, to explain how the installed unit is verified, and to provide material and filtration test reports on request. Equipment that merely moves the aerosol from inside the operator's breathing zone to the roof void is no longer acceptable in most markets: the discharge has to be demonstrably clean, and in many cases it also has to be returned to the workshop in order to recover heating energy.

Three purification principles dominate the market, and the best industrial equipment combines them. Mechanical filtration uses progressively finer barrier media: labyrinth or corrugated baffles to knock out the largest droplets, stainless-steel wire mesh, medium-efficiency pocket or bag filters, and finally HEPA/H13-grade glass-fibre media for the sub-micron tail. Mechanical filtration is robust, needs no high voltage and is easy to validate, but the media has to be replaced or washed periodically and deep beds create pressure drop that pushes fan power up. Electrostatic precipitation (ESP) first gives each particle an electric charge in a high-voltage ionising field, then collects it on grounded plates. Because the collecting force acts on the particle itself rather than on a pore, ESP units achieve high efficiency across the 0.1-10 micron oil mist range at very low pressure drop, and the collection cells are metal, washable and effectively permanent. ESP is the technology of choice for high-airflow, heavy-load duty such as heat treatment, die casting and centralised oil mist treatment for multiple machines. Activated carbon adsorption is added downstream when odour, VOC or process gases must be controlled as well as particulate - for example over high-temperature pyrolysis smoke or paint overspray. A properly specified purifier therefore reads as a train: pre-filter, main filter or ESP, final filter, carbon, fan. The order matters, the efficiency of each stage matters, and the pressure-drop budget determines which fan the plant ends up paying for.

Sizing is where most projects succeed or fail. The purification unit must be matched not only to the total airflow of the capture points but to the capture method itself: full enclosure, close-fitting local exhaust, side-draft hood, or push-pull ventilation across a large bay. Enclosure and close-capture designs reach the same protection level with far less airflow, which reduces both capital and running cost. Once airflow is fixed, the design must respect pressure drop, duct velocity - oil mist must stay above roughly 8-10 m/s in horizontal runs or it will condense inside the duct - and the return-air path. Discharging indoors recovers heating energy but requires the air to genuinely meet the relevant cleanliness target; discharging outdoors avoids that burden but wastes energy and may still be regulated. Because these decisions depend on the plant rather than the catalogue, YONGSTA sizes each project from a capture drawing and an airflow calculation, and supplies the purifier as part of a complete system rather than as an isolated box.

Choosing between the two families usually comes down to airflow, load and layout rather than to price. Mechanical oil mist filters are the natural choice for a single machine tool or a small group of machines: they need no high-voltage power pack, the elements can be washed and reused, and the vertical models fit into the narrow strip of floor beside a machine. Electrostatic units take over where the airflow is large or the load is heavy, including commercial kitchen exhaust, heat treatment, die casting, or a ducted network gathering mist from many machines - because they achieve high efficiency on sub-micron aerosol with very low pressure drop and no disposable media in the main stage. Many workshops end up using both: electrostatic purifiers on the high-airflow central systems, and mechanical units on machines that are remote from the central duct or that run intermittently. What matters is that the equipment is sized from a capture drawing and an airflow calculation. For a quotation, send us the machine list or a plan of the workshop, the capture method you intend to use and the installation position or space available for the purification unit, the available supply voltage, the required discharge route (recirculation or outdoor), and any local exposure limit that the purified discharge has to meet. With those five pieces of information our engineers can size the purifier, the fan and the ductwork, and give you a system price rather than a box price.

YONGSTA - Yongsta Environmental Technology (Shandong) Co., Ltd. - designs and manufactures industrial dust, fume and oil mist purification equipment at a 3,000 m2 production base in Shandong, China, supported by a research and manufacturing team whose roots go back to 2015. The company is a National High-Tech Enterprise with more than 30 patents and software copyrights, and operates a quality management system certified to ISO 9001, an environmental management system certified to ISO 14001, an occupational health and safety management system certified to ISO 45001, and holds CE certification on its export models. Products are supplied to more than 30 countries and to industrial customers including Siemens, Sinopec, CNOOC, Baowu Magnesium, China Railway No. 4 Engineering Group and other large manufacturing groups. For export buyers YONGSTA supplies the complete survey-design-manufacture-installation-service chain, English technical documentation, and factory acceptance testing before shipment.