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Paint shop with water curtain. Operating principle of spray booths with a water curtain Example of a paint booth from a furniture production

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Paint booths with water curtain and dry filtration

Paint waste collections

Spray booths with water curtain

Design spray booths with water curtain Made from high quality galvanized sheets, bent under pressure. The chamber is equipped with a folding curtain, which facilitates its maintenance, and cassettes with filters "Paint-Stop" type, immersed in water circulation pump made of stainless steel, intrinsically safe fan And explosion-proof lamps IP 66 . The speed of air movement in the painting area is 0.4–0.5 m/sec.

Equipment: CVA - with a short wheelbase and CVA/G - with an extended base, water floor and grille.

At your request, our specialists will prepare a project overpressure chambers (“clean” room) based on those offered, and will also prepare you an offer for the supply painting complexes based on low pressure systemsHVLP applying paintwork ( compressors , spray guns , incl. HVLP , distillers and etc.).

We recommend that you familiarize yourself with some theses on organizing the work of paint shops at the base spray booths with water curtain in winter and autumn-spring periods.

We also offer to your attention device for purifying water from paint waste V spray booths with water curtain(Collection of waste paints and varnishes).

In addition to supplying Italian spray booths, we also produce our own, domestically produced. The main advantages are low price and fast turnaround time (only 15 days)! Attention! New! Restored to new condition paint lines used from Veneta Revisioni (Italy)!

Paint booths with dry filtration

The structure is made from sandwich panels . The walls of sandwich panels are made of powder-painted galvanized sheets 30 mm thick, the space between which is filled with foam polyurethane foam.

Filtration polluted air is carried out using a set of fiberglass (floor) and labyrinth (in chambers without carbon elements) filters "Paint-Stop" type, 50 mm thick, installed frontally. In order to reduce dust concentrations in painting area And storage and drying areas we recommend using

Basic equipment:

Prefabricated body and settling tank made of galvanized steel with a large number of longitudinal, transverse and vertical stiffeners.

Double cascade of water curtains

The front curtains of both cascades (those through which water flows) have a quick-release design. This not only provides full access to the inside of the chamber for maintenance, but also makes it technically possible to narrow the gap between the bottom edge

curtains and water in the bathroom below. For the upper cascade, this is the bath of the lower cascade, and for the lower cascade, this is the settling bath.

This design has a number of advantages, the main ones being:

due to the absence of long sections of free fall of water, the formation of splashes in both the upper and lower parts of the working area is eliminated;
water rushing off the lower edge of the water curtain creates a dense flow that additionally cleans the air of suspended particles, which eliminates the need to install water sprinklers;
the speed of air flow after entering the painting booth is reduced by 4-5 times, which allows suspensions to settle into the settling bath, increasing the degree of purification of the emitted air.
The location of the bath for placing the pump is universal (to the left or to the right of the chamber). In this way, the service side can be selected during installation.
The location of the service area outside the chamber allows for visual control of operation and avoids external contamination of the pump, which leads to its overheating and premature failure.
Valves located outside make it easy to regulate the water flow in the water curtains, as well as to quickly drain water from the chamber using a standard pump during its scheduled maintenance.
Stainless steel pump,pumps clots of coating sludge with a diameter of up to 35 mm, as well as a built-in overheating protection system.
A system of circulation water lines, including a water circulation valve, an automatic water drain valve, all necessary hoses, passage units, flanges, clamps and other installation materials
Mounting kit including bolts, nuts, washers, sealant, etc. according to camera configuration
Packaging for transportation by road
Passport and instruction manual
CD with diagram and photo illustrations of the assembly

Additional options:

Exhaust fan
Labyrinth of barrier panels
Control panel for placement outside the hazardous area
Control panel in a plastic case
Explosion-proof luminaires with lamps (2x36 W)
Increasing the depth of the working area by 0.5 meters (roof panel and 2 side panels)

Water floor
Supply fan and set of filters for an “economy project”
Placing the pump inside the chamber (to reduce the overall width of the chamber)
The front curtains of both cascades are made of stainless steel instead of galvanized steel

The use of spray booths with a water curtain allows you to improve the quality of finishing and eliminate the impact of harmful substances on humans and the environment, which is determined by various factors related to the size of the products being painted, the volume and type of sprayed material, the duration of use of paint booths, environmental requirements, and workers. costs. For all cases, you can select the appropriate spray booth with a frontal suction system with water filtration, which ensures the sedimentation of solid particles. In this case, the product must be located between the operator and the active camera curtain. When choosing a stand, it is necessary to evaluate the size of the product being painted and the need to use a booth for the simultaneous work of several operators.

Distinctive characteristics:

The camera is the leader in sales in Russia in this segment, occupying more than 40% of the market.
Possessing all the necessary technical parameters, painting booths have a price that is 15-20% lower than their analogues.
They have all the necessary certificates for use in the Russian Federation.
Long experience in operating this equipment in the Russian Federation (the first deliveries were made more than 5 years ago) indicates the high quality of the metal and the low level of corrosion of the components.
The optimal design of the chamber allows in the future to aggregate it with air injection and filtration systems to upgrade it into an overpressure chamber.
The constant availability of equipment in the warehouse and all necessary spare parts allows you to immediately begin operating this type of equipment and minimize the risks associated with its downtime.
A wide product range allows you to select it most optimally depending on the width of the product being processed, or (if the product is much smaller than the width of the chamber) to use it simultaneously when working with several operators.
To automate the painting process, the painting booth can be supplied with an automatic workpiece feeding conveyor (optional), which increases productivity by 2-3 times.

Basic equipment of the DF spray booth

Price of a spray booth with pump Composition of the spray booth:

supporting structure of the chamber, made of galvanized sheet metal.
adapter flange for mounting the fan on the roof of the chamber
a set of special dry filters for the aspiration unit.
drainage type hydraulic pump.
hydraulic pump engine (Italy).
connecting pipes and components for water circulation inside the chamber.
frontal water curtain.
a small raised settling vessel located at the bottom of the chamber.
fluorescent lamp – 2 pieces
Electrical control panel
Supply voltage 380V/3/50Hz.
set of installation equipment.
electrical equipment in special design
further connection of an external air injection system is provided

The camera can be supplied with or without a fan. You can use your own fan of similar airflow capacity.

Compound: air aspiration unit with brass deflectors and standard motor (Italy)

Rear wall of cascade type – maximum spreading of water, i.e. no splashing.
Possibility of adaptation to room dimensions and non-standard design.
Fast delivery time - no more than a month.
Constant availability of all components in stock - instant replacement in case of failure - increased warranty.
The best prices on the market.

Convenient replacement of dry filters located above the water curtain.

The ability to quickly clean the camera in an easily accessible manner, since the lower rear part opens like a car hood.

A special drainage pump in a special design that allows you to work even with water with large clumps of paint.

Powerful explosion-proof fan, i.e. you can work at a distance of 0.5 meters from the working area of the cabin, 100% capture of all paint vapors, preventing water dust from entering the product, the operator can work even without a mask. Even if you spray paint with a nozzle down from a meter height, the paint does not reach the floor and is completely caught by the water stand.

Operating principle of water cabins:

With the help of a fan installed on the roof of the chamber, a vacuum is created, which ensures air suction; with the help of a water curtain (item 1), solid paint pigments are deposited. Water rinsing and additional dry filtration (D) allow aerosols to be captured and deposited in the collection bath. The pump (item 2) circulates water through the baths (A, B, C), the overflow from which forms water curtains. Some versions have two additional side curtains to optimize the first stage of filtration. The chamber consists of galvanized metal panels connected to each other by bolts. The side panels and partitions are load-bearing, and a centrifugal fan is mounted on the roof. Execution in various modifications: only a suction front, a suction front with additional walls and an extended roof, plus lower baths equipped with a grate, and there are also two height options. For fine purification of the chemical composition of the air, it is recommended to use an autonomous KARB coal installation.

Accessories for water spray booths available on request:

Increase in engine power from 3 to 4 hp
Explosion-proof motor Italy
Active floor (depth 280 mm, width – 1120 mm)
Side water curtains (for 2 pcs)
Freestanding water filtration unit
Lamp version IP 55
Version without roof, discount
Version without side walls, discount for each
Explosion and fireproof design of the control panel
Option “Ecological” (additional water curtain)
Increase in working depth from 1.22 m to 1.5 m
Increase in working depth from 1.22 m to 2 m

Technical specifications of the DF water curtain spray booth

Characteristic name

Characteristic value

External dimensions:
Length, mm
Width, mm
Height, mm

2 600
2 000
3 200

3 100
2 000
3 200

4 100
2 000
3 200

4 400
2 000
3 200

4 600
2 000
3 200

Working height, mm

Diameter of the exhaust hole on the roof of the chamber, mm

Hood capacity, m3/hour

Fans required, pcs.

Fan power, hp

Outlet hole, mm (L x W)

Outlet fastener, mm

Pump power, hp

Dimensions of the chamber disassembled for transportation, mm:

2600mm
1500mm
1500mm

3100mm
1500mm
1500mm

4100mm
1500mm
1500mm

4400mm
1500mm
1500mm

4600mm
1500mm
1500mm

Fan dimensions, m

1.2 x 1.2 x 1.2 m

How does a water curtain sprayer work?

The task of any paint booth is to ensure that the air in the spray zone is cleared of paint mist and solvent vapors.

Water spray booths have several levels of air purification from paint.

Level 1- frontal water curtain - this is the visible part of the spray booth with a water curtain. A stream of water flows down it in a continuous and continuous stream. It must be uniform and completely cover the entire front area (surface) of the curtain.

Level 2 -internal air purification - perhaps the main filtration and purification of air from paint waste is carried out here. Depending on the design of the spray booth and the manufacturer, there are various internal air purification systems.

Level 3 - dry filtration - carries out final cleaning of the air from remaining paint particles and protects the fan blades from paint sticking. Depending on the manufacturer, dry filtration is carried out in Italian painting booths with a water curtain, in Russian painting booths - in others, such as China, there is no filtration at all.

Below are diagrams of the structure of Italian and Russian paint booths:

1) Scheme of a water spray booth ZINCOVELO ZA Italy
2) Video of the painting booth in Italy

3) Scheme of a water spray booth made in Russia

4) Video of the Russia paint booth in operation (built into a clean room, overpressure chamber)

The operating principle of a spray booth with a water curtain is as follows.

When spraying the material, a paint mist is formed. The fan, which is installed on the roof of the spray booth, creates a vacuum and draws contaminated air through the opening in the paint booth at the bottom of the front curtain.

Also, particles of paint and dust are deposited on the front front surface, which are captured and carried away in a continuous stream into the bathtub of the paint booth and settle in the water.

Contaminated air, which entered the internal cavity of the painting water chamber with the air flow, is subject to additional cleaning. In Italian painting booths there are several water cascades, in Russian painting booths there is filtration by an irrigation system. The air is purified from spray waste.

Final cleaning - dry filtration installed in front of the fans (or)

Water spray booths can be of various modifications: with a floor, with side walls, without a floor and without walls. The choice of model depends on the painting technology and the product, as well as the requirements for the quality of the coating.

Painting booths perform the function of air extraction and purification.

When creating a painting area, it is very important to ensure the correct microclimate in the spraying area (the desired temperature regime), and also the incoming air must be cleaned of dust and dirt, this allows you to achieve excellent conditions for obtaining high quality coatings.

Let's figure out what types of cameras there are for painting furniture parts. Depending on how many and what sizes the parts will be painted, what paint and varnish materials you will use, the required one is selected spray booth.

2.

water spray booth without side walls and floor (front curtain only)
water spray booth with active water floor
water spray booth without floor with side walls
water spray booth with active water floor and side walls
water spray booth with active water floor and active water walls
small painting booths, otherwise small-sized or laboratory ones for painting small products in piece production, instrument making, 1 and 2 meters long.

Spray booth with dry filters

Due to its design, when painting in a dry spray booth, excess paint mist and contaminated air are removed from the paint application area, while cleaning it. All this works with the correct selection of the fan.

What happens when using a spray booth with dry filters?

When operating a dry spray booth, the following processes occur:

removing paint particles and dust from the spray area
removal of paint aerosol, while preventing its spread into adjacent rooms
conditions are provided for obtaining high quality paintwork
the air that is removed from the painting area is cleared of mechanical paint particles that remain in the filters and released into the atmosphere.

How is air filtered in a dry spray booth?

The air flow, which is contaminated with paint and varnish products, with the help of a fan moves by inertia into the opening of the chamber where it is installed one or two filters.

What types of filters are there for a dry spray booth?

Filters for dry spray booths are:

Cardboard filter

The principle of operation of a cardboard filter is as follows: particles of paint and varnish hit the inner wall of the filter several times and settle there, and the air continues to move by inertia, with no loss of air speed during suction.

An example of calculating the filtering capacity of a dry filter

For example, you have a dry spray booth 2 meters long with a suction area of 3.6 sq.m. This area corresponds to two pieces of cardboard filter 0.9 meters high and 2 meters wide.

The filter holds about 15 kg of paint per 1 sq.m. It turns out that the filter of our spray booth will hold 54 kg of waste paint. To calculate, we simply multiply the holding capacity of the filter by its area: 15 kg/sq.m.*3.6 sq.m. = 54 kg.

Glass fiber filter

The fiberglass filter is made of fluffy interwoven glass fiber that is impregnated with a special compound. The filter retains paint mist particles.

The fiberglass filter can be used as the only or second level of air purification from paint mist.

In the version of the second level of filtration, this filter is installed behind the cardboard filter. Often, a fiberglass filter in a roll is installed on the floor of car cameras, hence its second name – “floor”.

The service life of such filters is short, only 60 hours of coloring.

How long does a dry spray booth filter last?

This question, undoubtedly, in addition to the technological part, also has an economic component.

The basis for calculating the “lifetime” of a dry filter is the following components:

how many kilograms of paints and varnishes do you spray per day?
what kind of paint guns do you use, that is, what losses of paint materials occur due to fogging?
what products are painted
how they monitor the cleaning of spray booths and replacement of filters.

Example of calculating the lifetime of a dry filter

For example, you again have a 2-meter dry painting booth, paint consumption per shift is 20 liters per day (excluding solvent), you use a paint sprayer with a traditional spray system, the material transfer coefficient is 40-45%, that is, 8 liters out of 20 liters of paint flies into the fog.

Ours showed that it can hold up to 54 kg of paint. It turns out that one filter replacement will last 54/8 = 6.8 days, that is, about a week of work. And if you bought a roll of filter, then it will last for a month, you can figure out how much money it will be for yourself.

Spray booth with water curtain

A spray booth with a water curtain ensures maximum cleanliness and dust removal in the painting area. All this allows you to create ideal conditions for obtaining a high-quality glossy paint finish.

The frontal water curtain captures paint mist, and the air flow created by the fan additionally draws in contaminated air.


Video. 2. Spray booth with water curtain

What happens when a spray booth operates with a water curtain?

When operating a water spray booth, the following processes occur:

removing paint particles and dust from the spray area
removal of paint aerosol and eliminating the possibility of its spread to surrounding areas
providing ideal conditions for creating high quality coatings
the removed air is cleaned of mechanical particles of paint and part of aerosol vapors and released into the atmosphere.

How to care for a spray booth with a water curtain?

The first thing to do when operating a chamber with a water curtain is replacing the water. They change it depending on the degree of contamination in the cabin.

How quickly the chamber gets dirty depends both on the intensity of painting, that is, how much paintwork is applied per shift, and on the paint guns used. For spray guns with a low material transfer coefficient, a lot of paint is spent on fogging, which means more paint settles in the cabin. If the water is dirty, it will be less able to capture paint mist and dust.

How do you clean water from paint in a spray booth with a water curtain?

In small factories, water is simply poured into the sewer, which is basically impossible, and the accumulated paint at the bottom is scooped out with shovels and other available means.

“Advanced” companies use coagulants and a collection of paint waste to remove paint. The addition of a coagulant allows the paint to turn into flocs, which precipitate or float to the surface as flakes. Flakes are removed manually or using a waste collector.

How is air purified in a spray booth with a water curtain?

Water spray booths have three levels of air purification from paint:

At the first level, air purification is carried out using a frontal water curtain. A stream of water flows down this part of the chamber in a continuous and continuous stream.
At the second level, internal air purification occurs; here the main filtration and purification of the air from paint waste takes place. Depending on the design of the spray booth and the manufacturer, there are various internal air purification systems.
At the third level, dry filtration is carried out - the air is cleaned of remaining paint particles and protects the fan blades from paint sticking.

Water chamber design diagrams

Different manufacturers of spray booths have different filtration systems; for example, here are several diagrams of water spray booths.

What length and width should I choose for a spray booth?

If the maximum length of the parts to be painted is 2.7 meters, then the required length of the cabin is 3 meters, and if it is 1.8 meters, then 2 meters are needed.

If you want two painters to work in the booth, then multiply the numbers by two, at least.

The depth of the cabin depends on the size of the room in which the painting will be carried out. If the painter will be inside the cabin, then focus on the maximum dimensions of the parts to be painted.

If the room is, for example, 4 meters, and the cabin is 3 meters, then the cabin can be installed without side walls. Again, if two booths are installed side by side, then side walls are required so that there is no spray from the adjacent chamber.

Example of a paint booth from furniture production

Here are photos of a paint booth that were taken during a tour at a real operating enterprise.

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