The design specifications and standards of activated carbon adsorption bed combine with the size of the existing exhaust fan unit, place as much activated carbon as possible according to the design standard of filtration wind speed, increase the adsorption saturation period of activated carbon, try to meet the filtration wind speed required in the design specifications, reduce the number of periodic desorption, and improve the service life of activated carbon.

Internal circulation is adopted in the desorption of catalytic combustion regeneration system. Based on our experience for many years, the desorbed hot gas and decomposed exhaust gas are recycled by heat exchange, and then discharged when the desorption is completed. A concentration detection device is set in the hot air pipeline after the decomposition of waste gas to ensure that the desorbed hot gas is clean thermal air and will not cause secondary pollution to the activated carbon when it is recycled to the adsorption bed for desorption. Greatly improve the utilization of heat and reduce the loss of heating energy.

The activated carbon with high typical value shall be selected to ensure the adsorption effect of the activated carbon and improve the adsorption efficiency and service life of the activated carbon. The honeycomb activated carbon with typical value ≥ 800 shall be selected as the concentration medium.

The catalytic combustion furnace is equipped with flame arrester, fire damper and other devices, which are controlled by PLC to realize interlocking control with each electrical system and interlock with the control system of the original roll coating room. When there is a fault, the alarm will be given. The overall adsorption bed is equipped with a nitrogen fire fighting system to further avoid potential safety hazards caused by fire.

Noise reduction room shall be added for all fans, and silencing facilities shall be provided to control the noise ≤ 80D

The overall design complies with the design specifications of energy conservation, environmental protection and safety.

It is a rectangular groove, and the groove body is composed of δ It is made of 3mm sus steel plate structure, and the bottom of the tank is designed as a slope (3% inclination), which is convenient for slag discharge and flushing; The inlet and make-up pipes are set at the groove mouth, the bottom of the groove is provided with a discharge port, and the discharge valve is set at the bottom of the groove to facilitate the clean discharge of water. The tank body shall be coated with heavy anti-corrosion coating for anti-corrosion.

The water capacity of the pre degreasing tank is 1.92m3/h, the power distribution heating power is 25kW, the water capacity of the degreasing tank is 3.84m3/h, the power distribution heating power is 50KW, and the first heating time is 5 hours. After continuous production, the tank temperature will not drop below 40 degrees every day, and the tank temperature rise time will not be more than 1 hour. Direct heating mode: stainless steel electric heater is directly installed in the water tank.

The spray pipe is composed of main pipe, spray pipe, water pump, nozzle, interceptor, filter and other components. The spray pipe is SUS304 pipe, and the spacing between each spray pipe is 300mm. Flange connection is adopted to facilitate maintenance and cleaning. The spacing between the nozzles on each spray pipe is 300mm, and the nozzle with adjustable angle is selected. The water pump is a pipeline pump. Valves are set at the inlet and outlet of the water pump to facilitate the maintenance of the water pump. A filter is set at the inlet of the water pump.

The bath temperature is controlled automatically by the original platinum thermistor temperature sensor imported from Japan and the original intelligent temperature controller imported from Japan with PID adjustment (wherein the temperature controller is equipped with over temperature protection). The electric heater is automatically switched on or off according to the set value of the bath temperature, so as to achieve automatic detection, automatic display and automatic control of the bath temperature.

The separation treatment was carried out by heating and static separation. The degreasing liquid is pumped to the oil-water separation tank (size 1700 × eight hundred × 1000mm) is heated in the oil-water separation tank at a temperature of 80 ° C. by taking advantage of the physical property that oil is lighter than water, oil molecules float to the upper part to be stored in a certain amount, and then flow into the oil collecting drum through the oil collecting tank for manual collection and removal. A return pipeline is set at the bottom of the tank, and the tank liquid automatically flows back to the treatment tank.

It is composed of water tank, spray washing pipeline and filter; The water tank is rectangular, and the tank body is composed of δ It is made of 3mm sus steel plate structure, and the bottom of the tank is designed as a slope (3% inclination), which is convenient for slag discharge and flushing; The inlet and make-up pipes are set at the groove mouth, the bottom of the groove is provided with a discharge port, and the discharge valve is set at the bottom of the groove to facilitate the clean discharge of water. The tank body is provided with an overflow port. If the water level is too high, it can overflow into the nearby drainage ditch. The water washing tank is composed of two tanks. The reverse washing process is adopted to save water

The stainless steel plate assembly combined structure is adopted, with a plate thickness of 1.5mm. The wall plate and the top plate are assembled plates with outward folded edges, which are connected by bolts. All plate joints are treated with sealant. The surface of the chamber is flat, clean, easy to remove powder, and easy to change color; The top of the chamber is an arc plate to prevent electrostatic powder deposition; The bottom of the chamber adopts self-cleaning design, which can effectively prevent dust deposition and automatically recover accumulated dust; The indoor lighting device is equipped to meet the national requirements for illumination in the powder room. It is installed on the glass on the top of the outside of the powder spraying cabinet, and there is no shadow in the visual direction; The suction port of the powder room is equipped with a guide plate to improve the suction wind speed and the powder loading rate, and at the same time, the large particle powder that will sink to the bottom is recovered in time to maintain the indoor cleanliness.

The imported Jinma manual powder spraying equipment is adopted, including one set of electrostatic control box, one set of built-in high-voltage electrostatic generator, one detachable stainless steel powder supply barrel (matched with manual gun), one set of powder pump, powder pipe and low-voltage cable. The gun system is the best powder spraying equipment in the world at present, with reliable performance and extremely light weight. It has a detachable high-voltage module (the high-voltage module is close to the nozzle, with low voltage loss and convenient modular maintenance). The powder supply barrel and compact controller have good electrostatic shielding effect, and can ensure the best spraying effect and uniform spraying quality. The powder supply bucket can be disassembled without tools, which is clean, convenient and fast.

Multi pipe small cyclone dust collector + filter element filter combination mode is adopted, which is two-stage dust removal. It has automatic powder recovery, high recovery rate and complete purification. The recovered powder is returned to the powder supply bucket of the powder supply system through the lower part of the multi tube small cyclone. The powder can be reused after it falls into the powder supply bucket and passes through the screen. The inner walls of the large cyclone and the return air duct are very smooth to ensure that the recovered powder will not adhere to the inner walls. The wind speed in the air duct shall be controlled so that the dust is always suspended, and no dust will be accumulated, so manual cleaning is not required; It can effectively separate the fine dust in the powder and make it enter the second stage recovery device. The dust removal efficiency of the second stage filter element recovery device is 99%.

The filter element is manufactured by Donaldson of the United States, with long service life and good filtering effect. The back blowing control device inside the filter element can effectively and completely remove the powder attached to the surface, ensuring the quality of powder recovery and the utilization rate of powder. The efficiency of powder recovery can reach 99%. The main body of the box is made of cold rolled carbon steel plate Q235A, with a thickness of 2mm; The back blowing device is composed of a pulse controller and a back blowing electromagnetic pulse valve. The automatic control is realized after the setting of the pulse controller. The pulse controller adopts CMOS digital integrated circuit, which greatly improves the anti-interference performance. It consumes less power, has no noise, no spark, no mechanical vulnerable parts, small volume, light weight, long service life, reliable operation and convenient maintenance.

The fan adopts 4-72no4.5a 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 is made of bite, and the pipeline is formed without deformation; A damper 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. The air duct adopts δ The 1.2mm high-quality galvanized steel plate is made of bite, and the connection between pipelines adopts flange connection, and asbestos rope is filled between flanges as sealing material.

The column, beam and purlin of the framework of the room are made of profile steel. All framework materials are subject to anti-corrosion treatment, with good thermal insulation performance and large bearing capacity; The thickness of wall plate in the chamber is δ 0.5mm color steel plate, the thickness of outer wall plate is δ 0.50mm corrugated color steel plate with intermediate filling δ 100mm thick rock wool sandwich (rock wool density is 120kg / m3) insulation board, and the material of the chamber body is δ 1.5mm cold plate, so that the temperature of the outer wall plate is not higher than 5 ° C of the room temperature; The insulation wall panel is of tongue and groove type structure; Imitation door openings are set at both ends of the chamber, and the size of the door openings is (W × H)：400 × 2900mm

In order to ensure the adhesion between the paint film and the workpiece substrate in winter, it is generally required that the ambient temperature should be ≥ 15 ゜ C. the added heating device ensures the spraying effect of the operation at low temperature in winter and is integrated into the air supply 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

4-72 / 4-73 centrifugal fan, no temperature resistance requirement, belt pulley drive, low energy consumption, high efficiency and strong stability; The fan base adopts channel steel, angle steel and industrial profiles welded into a frame, which is firm and durable; Multi blade impeller, made of 16Mn, with noise no more than 85dB (a); The air volume, air pressure and other parameters of the fan meet the design requirements

Outdoor part of air duct adopts δ 50mm rock wool insulation material for insulation and reuse δ Wrapped with 0.5mm galvanized steel plate, it is easy to install and beautiful in appearance. In order to promote the strong circulation of hot air in the room and make it evenly distributed, regulating butterfly valves are set at the inlet of air supply pipe, return pipe, fresh air makeup pipe and exhaust gas discharge pipe; The air supply and return pipes in the drying room are all made of δ 1.2mm galvanized plate undercut production, without welding, to ensure the beauty of the pipeline; Flange connection is adopted for connection between pipelines, and asbestos rope is filled between flanges as sealing material; The air duct is arranged in the whole length direction of the drying room to ensure uniform air supply and return.

The drying temperature can be adjusted and set as required to meet the needs of coating production development and different coatings; The temperature in the furnace is displayed and automatically controlled by the digital temperature controller. The collected signal is sent to the temperature controller of the control cabinet. The temperature controller automatically controls the work of the burner according to the set drying temperature value to ensure that the temperature in the chamber meets the completion of the drying task; It has the function of overtemperature sound and light alarm and automatic interlock shutdown

A filter device is set at the air outlet to ensure the cleanliness of circulating air. 3001gg high-temperature resistant coarse effect flat filter is selected. It is made of alkali free glass fiber filaments. The fiber layer is thin to dense from the windward side to the leeward side, effectively blocking dust. It has the characteristics of large air volume, small resistance, flame retardancy, chemical corrosion resistance and excellent radiation resistance.

The waste gas is directly introduced into the hot-air furnace through the manual butterfly valve and traction fan, and then discharged at high altitude after incineration.

In order to block the heat loss when the door of the drying room is opened and reduce the energy consumption, the air curtain device is designed at the inlet and outlet of the drying room. The air curtain flow direction adopts the side supply and side suction structure. According to the calculation, the air volume of the air curtain air supply system is determined to be 5064m3 / h.

The framework of the strong cooling section and the rigid frame of the conveying system are common structures. In order to ensure sufficient supporting rigidity, the column is made of profile steel. All framework materials are sandblasted and painted, with good thermal insulation performance and large bearing capacity; For wall plate of strong cold section δ 50mm thick rock wool color steel sandwich plate is assembled. The outer plate is 0.6mm color steel plate, and the inner plate is 1.0mm galvanized steel plate. The structure is firm, the seal is reliable, the color is dignified, and the flame retardant.

320 air nozzles are arranged in the strong cooling chamber 1, 640 air nozzles are arranged in the strong cooling chamber 2. The framework of the blower cover plate is welded with L40 * 3 angle steel, and the cover plate is Q235 δ 2.0 steel plate production, blowing nozzle diameter φ 50。 The blower cover is firmly connected with the inner wall of the chamber.

The air supply pipes of the air cooling room are all made of δ 1.2mm galvanized plate undercut fabrication, no welding required. Ensuring the appearance of the pipeline; Flange connection is adopted for connection between pipelines, and asbestos rope is filled between flanges as sealing material.

The profile steel f80x4 rectangular steel pipe is used as the framework, and the surface is laid δ 50mm thick rock wool sandwich plate, inner wall plate material is δ 1mm galvanized steel plate, the thickness of the outer wall plate is δ 0.6mm corrugated color steel plate, filled with rock wool.

The whole electrical system adopts centralized control. The core components are controlled by PLC and HMI. The PLC adopts Siemens series products. The HMI adopts PWS products of Taiwan hitech. All equipment is controlled by PLC. The temperature control system adopts RKC digital intelligent temperature controller; Each system has manual and automatic operation modes; The air supply and exhaust fans in the paint booth adopt interlocking circuit; The circulating fan and heater in the drying room are equipped with interlocking devices.

The transmission device with planetary reducer V-belt structure is adopted. The standard number of teeth of the driving wheel is 10. If the user has special needs, the red driving wheel with the number of teeth of 13 and 16 can also be provided. The speed range is 0.5 ~ 10m / min. considering the stability and service life of the line transportation, it is recommended that the linear speed is 2 ~ 6m / min within the allowable range of the transportation volume.

The chain is the traction part of the conveyor. The xt-100 ordinary hanging conveyor adopts a die forged detachable chain, which has greatly improved the comprehensive mechanical performance of the chain after heat treatment. The chain can rotate freely in the horizontal direction in addition to the linear movement. The maximum angle of each section in the vertical plane is 9 °; Chain pitch: T = 76.20mm, breaking load: 110kN, allowable chain tension: 10kN, weight per meter: 3.8kg/m

The trolley frame is made of precision casting, with high strength and long service life. The maximum single point lifting weight of the load carriage is 125kg. The carriage is equipped with rolling bearings and a pressure injection type oil cup is also installed at the end of the carriage to ensure good lubrication and small running resistance. The maximum service temperature is 180 ℃ ~ 200 ℃. If the service temperature exceeds 200 ℃

The crane is a tool hanging on the load carriage and the heavy-duty carriage to carry goods. Its structural form is determined by the shape and process requirements of the workpiece. The customer provides the shape data or actual samples of the workpiece. The specific design and manufacture can be undertaken by the factory.

The rotary device is a horizontal direction changing device that guides the chain and the carriage to smoothly turn along the track. It is installed on the horizontal turning rail section of the line. The rotary device can be divided into three structural forms: sprocket rotation, smooth wheel rotation and roller row rotation.

In order to prevent the workpiece on the high-altitude conveyor from falling and damaging the machine or pedestrians, the safety net shall be installed in the passage and operation place of the conveyor, especially in the lifting section. In order to make the objects on the conveyor pass through the safety net smoothly, the working edge shall also keep sufficient clearance (≥ 150mm) with the safety net.