This project is for an electric vehicle manufacturer‘s new workshop, including welding area of more than 30,000 square meters, layout of 300 welding robots and 860 manual welding positions, welding workpiece are electric tricycle parts.
Fume collection program: blowing and sucking type centralized dust removal
Treatment workshop: The workshop is divided into 8 spans, with dimensions of 180 meters long, 4 spans of 20 meters wide and 4 spans of 30 meters wide;
The volume of the workshop to be treated is 180m (total length) × 200m (width) × 5m (height of suction outlet arrangement) = 180,000m³.
The national standard specifies that the total dust concentration ≤ 4mg/m³, according to the ventilation manual and the concentration of indoor pollutants, take the number of air exchanges for 8 times per hour, the total air volume is: 180,000 × 8 = 144,000m³/h, taking into account the loss of air volume and pipeline wind resistance, so at least 70 sets of MLWF2000-C blowing and suction dust removal hosts, a single set of air volume of 20,000m ³ / h, the total air volume of 1400000m³/h.
The overall indoor air purification flow is: workshop side by 15 sets of air supply fan as the air supply power blowing to the middle span, the middle span layout dust removal host in the negative pressure inhalation purification, the clean air discharged into the air supply power continue to row to the next span, and so on, the whole workshop air flow to form a wind curtain towards the side, and finally by the last span of 18 dust removal equipment to meet the standards of purification and outdoor chimneys are discharged by the 3 organized emissions; Single exhaust cylinder 16000mm, exhaust air volume 120,000m³/h; total exhaust air volume 360,000m³/h.
The fume purifier uses fine filtration technology, adopting the international leading PTFE film-coated polyester fiber flame-retardant cartridge, which has a high filtration precision, with a filtration efficiency of up to 99.9% for the fume (0.3 μm), and maintains a very high air flow rate. In the ultra-negative pressure fan gravity, welding fume and exhaust gas through our pre-selected different dust suction device to collect, through the pipeline into the equipment inlet, in the equipment inlet is equipped with a deflector plate, to ensure that the fume gas uniformly into the settlement chamber, the use of gravity and the upward airflow, first of all, the coarse particles of dust will be directly down to the cleaning drawer, the diversion of fine dust by the cartridge to intercept the cartridges after the cartridges continue to accumulate on the surface of the Central purification system The control system of the central purification system through the differential pressure sensor, when the wind resistance reaches a certain value, that is to say, affecting the suction air volume, the control system automatically rotates to open the solenoid valve, automatic backblowing dust cleaning. The dust automatically falls into the ash-cleaning bucket. And the clean gas is filtered and purified by the cartridge, and flows into the clean room from the center of the cartridge, and the clean air is discharged through the outlet indoor to meet the standard.
MOLAND blowing and suction dust removal advantages:
1、Energy saving
A. The fan speed is automatically adjusted according to the number of workstations to meet the dust removal effect while reducing direct power consumption B. The automatic cleaning cycle and duration can be automatically adjusted according to the concentration of soot, thus saving compressed air and indirectly saving energy. Consumption (compressed air energy consumption is about 30%-50% of the energy consumption of the dust collector fan)
2、Safety
Pipeline spark detection, automatic spraying, automatic pressure relief of pressure vessels, air inlet and outlet fire damper, host temperature monitoring, all possible injuries to the energy source can be padlocked lock.
3、Stable
All system status detection, cartridge status, fan room temperature, motor temperature, bearing box temperature real-time monitoring, found abnormal immediately alarm, nip the problem in the bud.
4、Well-used
Remote online, manual, automatic three control modes, all operating/alarm parameters can be set (set operator/administrator mode, to prevent arbitrary changes in parameters) and default value prompts
This project is equipped with MOLAND independently developed program programming PLC, touch screen display purification equipment working status and control and detection of purification equipment all function keys. (The company's unique control function: each time the purification equipment stops working, the control system will automatically clean the dust automatically for each filter element one by one in sequence, and the purification equipment will automatically turn off the power after the dust cleaning is completed, to ensure that the efficiency of the purification equipment meets the 95% of the initial use).
