During painting, the external air enters the painting room after passing through the medium and low efficiency filter cotton, enters the dynamic and static pressure chamber, and then enters the painting room. The air flow forms an air curtain around the workpiece to be painted. The air in the room is of full pressure type, and the wind speed can reach above. The paint mist generated during painting rapidly drops with the air flow, shrinks toward the exhaust outlet under the action of the exhaust fan, enters the organic solvent adsorption box after being filtered by the paint mist filter material, and then is discharged at high altitude, The discharged gas complies with GB16297-1996 integrated emission standard of air pollutants. When painting, the air cleanliness in the room is more than 98%, and the incoming air has a certain pressure, which can form a constant airflow around the workpiece to remove excessive paint, so as to ensure the quality of painting to the greatest extent.

In the painting and drying integrated room, natural gas is heated and the circulation mode of upper air supply and lower air return is adopted to realize drying. The heated air enters the drying chamber through the circulating fan and pipe to heat the workpiece. The air after heat exchange is collected by the return air pipe, and then returns to the heating chamber with the supplementary fresh air to form an internal circulation. Through continuous circulation, the surface of the workpiece rises to the specified temperature. When the set value is reached, the heater stops working; The fan continues to work. When the indoor temperature drops to the set value, the heater automatically works to raise the temperature to the set value.

Paint drying integrated room main material: column 200 × two hundred × 5 square steel pipe, inner and outer wall plates are δ 0.6mm thick galvanized and plastic sprayed color steel plate, filled with sandwich insulation layer rock wool in the middle, 100mm thick, so that the temperature of the outer wall plate is not higher than 5 ° C of the room temperature, and the average sound insulation is not less than 21.5r (DB), which is beautiful, sealed and has good thermal insulation effect, strong impact resistance and long service life

Fresh air enters the static pressure chamber and passes through the high-efficiency air filter cotton. The air flow direction to the operation room is more stable to avoid turbulence. The high-efficiency filter cotton adopts the "Filtrair" product imported from the Netherlands, with a filtration level of F5 and an average weight counting efficiency of 98%; It is equipped with a section steel framework and a C-shaped steel structure of the top net. After special rust prevention treatment, it has good rigidity, no rust, and it is easy to replace the top cotton.

The international new roller shutter door is selected, which has good heat preservation effect and strong bending resistance to prevent condensate; The surface of the profile is multi-layer baking paint or film layer, which has excellent scratch resistance, corrosion resistance, non corruption, wear resistance, knock resistance and impact resistance; During startup and operation, it is fast and noiseless (the speed can reach about 0.1m/s and the noise is less than 58db)

An outward opening safety door is set longitudinally in the room, and an anti riot emergency light is installed to facilitate personnel access and evacuation in case of emergency. The size of the safety door can be customized. The safety door is equipped with a mechanical pressure lock and an automatic door closer. When the pressure in the room exceeds 100Pa, it can automatically open the pedestrian door outward to relieve the pressure and play the role of explosion relief.

The pit inside the track of part of the painting and drying integrated room is the operation area for the operators during the bottom painting. Lighting is set on both sides of the passage to facilitate the bottom painting of the workpiece. The grating is laid on the upper part of the pit outside the two tracks according to the floor height, and the paint mist filter glass fiber cotton is arranged in the middle.

40x3mm flat steel and Ø 8 round steel are welded, (its bearing capacity is not less than 500kg / m2). The spacing between loaded flat steel is 30mm, the spacing between cross bars is 150mm, the area of each piece is about 1m2, and the weight is ≤ 25kg / m2, which is convenient for disassembly and cleaning.

Metal mesh is installed at the air inlet to prevent birds and debris from being sucked in. The air inlet is arranged indoors. The exhaust outlet is arranged at a high altitude to ensure that the exhaust gas will not be sucked in again. Air volume regulating valve is set to regulate the air inlet to ensure that it matches the exhaust air volume. The air valve conversion section is to realize the conversion of spraying and baking paint. It is composed of air valve and automatic air valve controller. The automatic air valve controller is Swiss bellmo product, which is sensitive and accurate

The forced draft fan unit adopts a coarse filter device, and the coarse filter material adopts vnf-290 (G3), a series of synthetic fiber filter material produced by the Dutch "Filtrair" company, which has the characteristics of high dust capacity and low pressure drop. It is economical and practical, and can resist the influence of chemical solvents, acid smoke and other chemicals. It can be reused after dust collection or cleaning, and has a long service life.

The fan adopts double suction explosion-proof centrifugal fan with good performance, high efficiency, beautiful appearance, compact structure, stable operation and convenient installation; The frame is welded with channel steel and angle steel to ensure its bearing capacity; Air supply pipes are all made of δ 1.2mm high-quality galvanized steel plate undercut production, and the pipeline is formed without deformation; A damping or elastic reducer is installed at the bottom of the fan, and a fan noise reduction room is set to ensure that the system noise is controlled below 75dBA

In order to ensure the adhesion between the paint film and the workpiece substrate in winter, the ambient temperature is usually required to be ≥ 15 ゜ C. The increased heating device ensures the spraying effect of low temperature operation in winter. It is integrated into the air supply system. Combined with the requirements of heating power value in winter, the burner adopts btg28p two-stage fire gas burner of Italian "Baltur" company, which is safe and energy-saving

Gas burner

Air heat exchanger

Insulation chamber body

Temperature control system

According to the requirements of heating power value in winter, btg28p two-stage fire gas burner of Italian "Baltur" company is selected as the burner, which is safe and energy-saving

The inner tank of heat exchanger adopts δ 4mm stainless steel is made by argon arc welding. The two process heat exchange design of the whole machine has reasonable structure, large heat exchange area and high heat exchange efficiency. At the same time, it is equipped with a wind pressure switch to effectively monitor the operation of the system. When it is found that there is no circulating air in the system, immediately cut off the burner and stop heating. So as to ensure the safe and reliable operation of the equipment

The hot blast stove adopts profile steel as the framework and is surrounded by δ 100mm thick rock wool insulation board mask, and an access door is set at one side

A platinum thermistor temperature sensor is set in the paint booth, and the collected signal is sent to the temperature controller of the control cabinet. The temperature controller automatically controls the operation of the burner according to the set temperature value, and the temperature can be set as required. Ensure that the temperature in the room meets the requirements of painting tasks.

The synthetic fiber filter material product vnf-290 (G3) and the bag filter of the filter section of the air supply system can increase the cotton area of the air inlet by 3-4 times with the cloth bag structure. The adoption of this filter form can reduce the wind resistance, increase the dust capacity and reduce the replacement times

The Dutch "arresters" synthetic fiber filter material cc-600g (F5) is selected as the sub high efficiency filter material, which can filter out all particles that can damage the paint quality, and the dust content is 100% removed to ensure that the air flow passing through the paint booth is evenly diffused and forms a laminar flow state, which conforms to the fire classification standards of European din53438-f1 and American ul900-class1.

Activated carbon adsorption + RCO catalytic combustion

The organic waste gas can be adsorbed by using the adsorption characteristics of activated carbon micropores, and the waste gas with low concentration, low temperature and hydrocarbon can be treated. The solvent can be recovered and reused, and the purification efficiency is as high as 90-95%. Activated carbon is a non-polar adsorbent with hydrophobic and organophilic properties. It can adsorb most organic gases, such as benzene, aldehydes and ketones, alcohols, hydrocarbons, etc. and malodorous substances. After adsorption saturation, it can be desorbed and regenerated with hot air and put into use again.

Molecular sieve zeolite runner adsorption + catalytic combustion

The zeolite runner concentration area can be divided into treatment area, regeneration area and cooling area. After collection and pretreatment, VOC organic waste gas enters the zeolite molecular sieve runner system. Through the continuous process of adsorption desorption concentration of zeolite molecular sieve runner, large air volume and low concentration organic waste gas is concentrated into small air volume and high concentration waste gas, and then enters the regenerative oxidation furnace for combustion purification, And effectively utilize the surplus heat released by the combustion of organic matter.

Safety alarm system

The differential pressure detection alarm adopts the sound and light alarm mode, and is interlocked with the air supply and exhaust system to cut off the fan operation and remind the operator to replace the filter material; The combustible gas detection and alarm instrument has a central control system and multiple detection channels, which can connect multiple probes. The probes are placed on each indoor working section to monitor the indoor combustible gas concentration at any time and send out alarm signals.

3D operation platform

The lifting is stable, the transportation is reliable, and the structure is reasonable. The operating staff only need to press the six buttons of lifting, lowering, entering, retreating, front and rear to realize the horizontal, vertical, front and rear movement of the working platform. In order to ensure safety, iron chain guard rails are arranged on both sides of the extended platform; The limit switch in the room is of safe voltage, and the pull tube, junction box and motor are of explosion-proof type, thus ensuring the safety of the three-dimensional trolley

Electric control system

The components of the electronic control system of the spray painting and drying integrated room are well-known brands such as Omron, Siemens and Schneider. The main circuit has protection functions such as overcurrent, overload, short circuit and lack of power, ensuring high reliability of the electrical control system and low failure rate. The circuit design is reasonable, with functions such as short-circuit protection, overload protection and reliable grounding protection system. PLC programming can control the whole equipment; The power distribution control cabinet in the system has a plastic sprayed surface and is beautiful