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Typical solutions from our work with dust extraction, told simply. The customers are anonymous.

6typical solutions

4industries

Describe your task Find a dust collector in five answers

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Cases01Typical solutionsFood production, pharma and medical devices.3cases Cases02How we approach a taskBuilding chemicals, food production and pharma.3cases

Customers are anonymous. No prices.

Typical solutions

Dust we have caught.

Three typical solutions, told simply. The customers are anonymous.

2 monthsfrom the first enquiry to the machine standing in the factory

Food productionATEX zone 22Stainless steel

The spice room in a new food factory

The taskAn engineering company built a new food factory in Central Europe. In the spice room, flour, starch and spices are tipped into dosing systems. The area at the filling openings is classified as ATEX zone 22. The customer needed a mobile, explosion-protected dust collector in stainless steel.

SolutionA Tiger-Vac CD-1200 EX in stainless steel with automatic filter cleaning and conductive cartridge filters. Instead of two small arms, one large stainless extraction arm, so one operator can move the capture point to where the bag is emptied. A differential pressure gauge shows when the filter needs cleaning, and two spare filter cartridges came with the machine.

DocumentsThe customer received ATEX, IECEx, material and ISO documentation for the building permit and HACCP.

“Prompt and professional.”The customer about our first reply

2,000 m³/hArm Ø200 mm × 3 mATEX II 1/2GD

2 suction pointson a custom-built, mobile suction table, with a HEPA filter after the blower

PharmaFine plastic dustCustom-built

A suction table that cleans small filters

The taskA pharma producer had to clean small vacuum filters that sit in plastic tubes. Both the filter medium and the inside of the tube had to be clean. The dust was fine plastic dust.

Our testBefore we made an offer, we tested it ourselves with an ordinary vacuum cleaner and a small nozzle, and the filters became visibly clean. For daily use a 3-phase blower with pressure relief was needed, because a 230 V motor does not last.

SolutionA custom-built, mobile suction table from Depureco with a funnel with grid and a suction nozzle. Side channel blower, cartridge filter, HEPA filter after the blower, collection in a paper bag in a pull-out container, and a vacuum gauge.

After useAfter six months the grid proved too coarse, so the smallest filters were sucked down. Later we fitted a fine mesh, raised the table to a better working height and led the exhaust air away through a stainless pipe and a diffuser.

2.2 kW side channel blower250 mbar380 m³/h (manual)Filter area 0.88 m²CE, not ATEX

150,000springs a day, each giving off almost no dust

Medical devicesFine metal dustLow noise

Metal dust from 150,000 springs a day

The taskA producer of medical devices sorts small metal springs in a machine. The springs are lifted into a sorting sieve and fall through a drop tube. Each spring gives off almost no dust, but at 150,000 springs a day, fine, slightly oily metal dust builds up in the machine. The extraction had to be quiet, and the unit should preferably stand inside the machine cabinet.

SolutionWe looked at several machines, but they were either too large or too weak. The solution was two small suction funnels inside the drop tube, at most 15 × 25 cm, because there was no more room. A local metalworker built them to our measurements. They connect to a Depureco extractor with an extra silencer through a Y-branch and electrically conductive Ø40 hoses with antistatic sleeves and nozzles.

FeedbackThe customer has since told us about a positive development after the installation.

2 suction points in the drop tubeHoses Ø40Y-branch 70-40-40Depureco DF22, 2.2 kW

How we approach a task

From the source, not from the catalogue.

Three typical tasks and how we solve them.

01

Building chemicals

Dust hangs in the air at the weighing station

Move the suction to the source

A dust extractor behind a screen, with two fixed extraction arms at the weighing station.

Technical description

Bags are filled with powder by hand at a scale, and dust hangs in the air around the weighing station. The existing vacuum cleaner did not remove it, because it is built for dust on surfaces, not dust in the air.

The solution is an ATEX dust extractor for zone 22 behind a screen, fixed pipes on brackets and two fixed extraction arms at the weighing station. The air can be returned to the room through a HEPA filter, so no exhaust over the roof is needed. The manufacturer pointed out that the extractor cannot carry two arms itself, so the arms sit on a wall bracket with a collecting pipe.

Depureco DF 40 DEX 1/3DATEX zone 22Two armsHEPA filterCollection in plastic bags

02

Food production

Fine dust and mist from grinding crab shells

Adjust on site

Two extraction arms, at the lid opening and at the spill area, adjusted on site at commissioning.

Technical description

Cooked crab shells are ground in a bowl cutter. Even with the lid closed, fine particles and mist escape and can cause respiratory problems for the staff. The material is wet, and there were no ATEX requirements.

We advised against building the extraction into the machine. Instead we use two extraction arms, one at the lid opening and one at the spill area, adjusted on site at commissioning. Two solutions fit: a Delfin CUBE 20 PN ACD with 2,500 m³/h, H14 filter and automatic filter cleaning, or a Tiger-Vac CD-595 EX HEPA VOC with carbon filters if the odour also had to be removed.

Two arms2,500 m³/h, H14Carbon filters as an option

03

Pharma

Mobile extraction in a clean pharma environment

See the machine before you choose

A stainless steel Depureco dust collector with HEPA H13 and an extraction arm.

Technical description

Quality assurance required that no dust escapes during filter cleaning, and that the HEPA filter is integrity tested every time it is changed.

We compared several machines with the customer and let them see the machine before choosing. The customer chose to do without automatic filter cleaning to keep the installation simple. The solution: a Depureco dust collector in stainless steel with a manual shaker, an antistatic PTFE main filter, HEPA H13, a bag system and a stainless extraction arm. Bag collection and the large main filter were decisive for the customer. The manufacturer integrity tests the HEPA filter before the machine is shipped.

Stainless steelHEPA H13Bag system

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Source: our own case files. Customers are anonymised, and no prices are shown.