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[Concept]
Filter paint objects in a room spray, also known as the paint room.
The painting room is to provide a dedicated environment for painting equipment, painting operations to meet the requirements of temperature, humidity, light intensity, air cleanliness; mist and organic exhaust restriction can paint job and deal with emissions, is environmentally friendly type of coating equipment.
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[Calendar history]
Chinese painting room is the first in the 1990s in Chengdu area.
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[Sub class]
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[To the airflow direction division]
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(1) cross-flow
Airflow to the other side of one end of the flow from the room.
Such models, low cost, easy to install.
The drawback is that the mist move along the body side, and the mist can not be removed from the operator's face around the working environment unsatisfactory.
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2 under side flush
Air through the ceiling of the filter device into the paint room, and discharge the foot of the wall by the side of the room.
This is the painting room of the mid-range price.
As the mist away from the body of the object itself, and can from around the operator to remove the fog, and thus paint effects and working environment than ideal.
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3 undershoot ceremony
Embodies the most advanced technology.
The air from the ceiling into the pit or basement emissions to the outside.
Exhaust available cleaner spray process and a safe working environment. But its high cost, large space.
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[Divided by heating]
(1) diesel-type
(2) electric heating
3 steam heating
(4) infrared paint room
(5) of waste oil type, and so on.
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[Divided mist handling]
(1) dry-type
(2) wet (water treatment)
Normal use of the paint room most used dry process, so the filtration system (mainly refers to the primary filter cotton and secondary filter cotton, etc.) to regularly check and replace, or ranging from affecting the quality of the paint, while possible cause a fire.
With the further development of science and technology, more and more advanced way to deal with the excess paint mist.
Use water treatment in many high-end automotive paint room, the excess paint mist dissolved in water treated, has made considerable progress in the way of handling paint mist.
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[The earliest painting room]
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[Key]
(1) ventilation ---- ventilation, painting rooms the key
2 filter ---- small and medium-sized particles of filtered air
(3) Exhaust ---- the discharge of waste air and air to enter
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Original rationale
Air (outdoor air) - paint the door filter cloth - paint - spray equipment splash paint - exhaust fan (discharge generated mist)
The weakness of this painting room still exists:
A filter cloth is easy to scratch, dust, easy access to
(2) easy to clean outdoor air into the
3 is not environmentally friendly, waste paint
(4) requires more frequent cleaning to remove dirt on the filter cloth on a regular basis
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New painting room]
Total pressure spray room
Basic principles and ventilation painting room is the same, but use of the orientation of the pressure, the pressure is taken off from the previous vertical painting, so that the painting is more accurate.
In terms of hardware, computer room, the "multi-layer cotton filters instead of filter cloth, clean air and high;
The use of infrared heat lamp, saving drying time;
To flush out excess paint mist, use curtain is more environmentally friendly.
Rework probability is almost zero, and also saves paint, improve work efficiency.
The use of infrared heat lamp, so people also called the paint room.
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[Structure]
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(1) air filtration systems
2 workpiece hanging (transportation, rotation) device
(3) curtain system
(4) washing system
(5) exhaust system
6. Sink
7 lighting fixtures
8 chamber body
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A whole spray barn for the assembled structure, the housing body with a picture-plug insulation spray wall panels, sealing, thermal insulation properties, aluminum edging the door, the door Central equipped with observation windows, they can always observe the room dynamic;
Side of the housing body is equipped with working doors, to facilitate staff out of
(3) high quality stainless steel heat exchanger, heat transfer efficiency, long life
Selection of imported cotton filters, low noise and high air flow fan, to ensure the perfection of the paint effect.
The painting room for the workpiece spray:
(1) clean work environment;
(2) to collect the mist.
Painting room configuration according to the workpiece size, shape, weight and production program may have a variety of ways:
Open, closed;
Continuous, intermittent;
Workpiece rotation, fixed;
Unilateral spray bilateral spray.
In recent years, development of oil curtain spray booth, under the painting room.
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The original rationale
The principle of the mist recovery
The mist recovery can be divided into two parts:
First, spray the workpiece when the collision mixing of Mist and curtain, the curtain will be integrated into the part of the mist falling into the sink;
Is not integrated into the curtain of mist upon the bottom of the curtain plate gap to enter the washing room, fully mixed with the mist atomizing nozzle, gas and water flow into the sink after the separation settlement.
Periodically added to mist condensation agent to form the paint residue in the sink.
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[Performance]
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① [brightness]
Brightness of the paint room needs to 800-1000 lux, and need to use the lights close to the D65 light source, while the room wall matte white;
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② [air traffic]
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③ The filtering effect]
It depends on the paint the model of the roof of cotton, general repair shop, EU5 and EU6 two models, you can paint room in the room with the upper part of the solar light irradiation, usually per square meter of very fine dust should be less than 5
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④ The wall sealing effect]
Paint room must be sealed, and should not paint dust accumulation in the joints
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⑤ The guarantee positive pressure]
Paint room into the wind should be slightly larger air volume, paint room maintained at a positive pressure state
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⑥ The heating system of the sealing effect
Around burner and chimney should be sealed, not burning after the putty
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⑦ heating rate]
The time of the paint room from 20 ℃ to 60 ℃ about the l0-l5min, should pay attention to some of the paint room thermometers are not allowed to paint the room the temperature of the metal body of the subject, when the measured temperature.
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[Design elements]
1, determine a reasonable configuration form.
2, determine a reasonable spray booth average horizontal air flow rate.
3, the air supply, exhaust system, a reasonable match to ensure that the paint indoor slight positive pressure.
Curtain thickness should be uniform, should pay attention to the sink form and structure of water supply pipe distribution.
5, the lower part of the curtain plate to the sink surface distance should be reasonable.
6, washed atomizing nozzles and piping should be easy to disassemble, replace and clean-up.
7, the gas-water separation settlement should be adequate and easy to clean.
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[Note]
1, during the before spraying must first check the spray pressure is normal, while ensuring that the filtration system clean;
2, check the air compressor and the oil-water dust separator, so that the spray hose to keep clean.
3, the spray gun, spray hose and paint cans to be stored in a clean place;
4, in addition to the use of hair gun and sticky dust cloth dust, all before spraying process should be completed in the paint room;
5, only in the paint room spray and bake process, and paint room door can only open when the vehicle access must start spraying when the air circulation system to produce a positive pressure, open the door, to ensure that outside the room dust can not enter the room;
6, must wear the specified paint clothing and wear safety protective equipment to enter the paint room to operate;
7, during the baking operation, you must paint the room flammable items out outside the room;
8, non-essential personnel may not enter the paint room.
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[Maintenance]
A daily clean room walls, glass and floor base, in order to avoid the accumulation of dust and paint dust
2 per week to clean into the wind the dust filters, check the exhaust filters plot plug, such as the increase of the room air pressure for no reason, you must replace the exhaust filters of the;
3, each work 150h replacement of floor dust fiber cotton;
4, each work 30oh should be replaced into the wind the dust filters.
5, monthly cleaning floor basin of water, and clean the burner diesel filter device;
6, for each quarter should check the air intake and exhaust motor drive belt is slack.
7, every six months should be clean and the paint room and the ground station network, check the circulating air valve, air intake and exhaust fan bearings, check the burner exhaust gas channel, the clean fuel tank within the sediments, cleaning paint room water-based protective film and re-spraying.
8, should be cleaned every year the entire thermal energy converter, including the combustion chamber and exhaust channel, every year or every work 1200h should be replaced paint the roof of cotton.
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【Article is excerpted from: Baidu Encyclopedia】
【Network reprint / Just reference】
【Translation is by Goolge】
