Seven key indicators for laser workshop dust removal systems

It provides a detailed explanation of the seven key requirements for dust-collection systems in laser-cutting workshops, including air volume, filtration efficiency, and noise control. The guide helps companies quickly grasp the key points of the inspection, and ensure that their production environment meets national environmental standards.

Why is the dust removal system so important for environmental inspection?

The dust and harmful gases produced by laser cutting and welding processes not only affect the air quality of the workshop, but also may attract environmental protection penalties.A dust-removal system that meets standards directly determines whether a workshop can pass inspection by the environmental authorities.Today we will talk about the seven hard indicators that need to be closely monitored during the acceptance inspection.

Seven key indicators of an effective dust removal system.

1. Airflow capacity must match equipment power.

Let's take a practical example: for a 2000W laser cutting machine, we recommend a dust collector with at least 3000m3 / h airflow.If the airflow is too low, it's as if you're trying to drink a milk tea with large tapioca pearls through a straw--you just can't suck up the big particles of metal dust.When accepting delivery, remember to check the equipment's parameters to avoid being misled by "exaggerated air volume ratings.

2. The filtration efficiency must be at least 99 %.

The most popular HEPA filters on the market now have a filtration efficiency of 99.9 %, but it's important to understand the difference between "pre-filters" and "high-efficiency filters.Some manufacturers will give the efficiency of two layers of filtration, which may be as low as 95 % for a single layer.It would be more reliable to check third-party inspection reports when accepting the goods.

3. Noise level below 85 decibels.

Factory workers come into contact with the equipment for eight hours a day, so if noise levels are too high, not only will the equipment fail inspection, it may also be the subject of complaints from workers.When testing, don't just test the equipment itself; measure the noise levels at the worker's operating position. The combined noise levels of the fan, the cutting machine, and the dust collector are the true data.

4. Don't ignore the pressure difference alarm.

A clogged filter will reduce suction, but workers will often not discover a problem until they can see dust with the naked eye.All modern dust collectors come with pressure differential sensors. When they are being inspected, a test is carried out to determine whether the alarm will go off when the filter is clogged up.

5. The emission concentration must be below 20 mg / m3.

This is a hard and fast environmental standard. The key is to check the data from the air outlet.There's a little trick to this: ask the testing agency to take the sample after the equipment has been running for four hours. At this point, the filters are nearly saturated, and the results are the true emission levels.

6. The dust collector should be easy to clean.

I've seen too many workshops where workers simply don't bother to empty the ash pans on time because it's such a hassle.At the time of acceptance, the most important point is to make sure that the ash hopper has enough capacity for eight hours of use, and that the ash discharge valve does not get stuck with ash. The drawer design is much more practical than the one with screws.

7. The energy consumption of equipment must be calculated.

You have to look at more than just the purchase price. The annual electricity bill for a 11-kilowatt wind turbine can be over NT $ 20,000 more than that for a 15-kilowatt model.New variable frequency dust collectors can adjust power output automatically according to the amount of dust in the air. Although they are more expensive, in the long run they are more economical.When accepting a new building, remember to ask for the energy efficiency test report.

Three things to check before you move in.

On-site testing.

Don't believe the data from no-load testing. You absolutely must use a dust detector to take samples at different workstations under normal production conditions.

Check the equipment's credentials.

Check that the three necessary certifications (explosion-proof certification, fireproof filter material report, and environmental protection certification) are complete, especially for workshops that handle flammable metals.

Retain evidence.

When using a mobile phone to record the inspection process, the focus should be on recording the nameplate of the equipment, the readings of the detection instruments, and the process of taking samples at the discharge pipe.