What it does is
1.Ventilation and exhaust air: Negative pressure fan can effectively eliminate indoor waste gas, hot gas, dust and other harmful substances by generating a negative pressure environment, and improve air quality.
2, dust removal function: in industrial production, negative pressure fan is often used in dust removal system. It draws out the air with dust by generating negative pressure, thereby reducing the indoor dust concentration and maintaining a clean working environment.
3, temperature regulation: the ventilation effect of negative pressure fan helps to adjust the indoor temperature. In the high temperature environment, by discharging the hot air, the indoor temperature can be effectively reduced and the working comfort can be improved.
4, dehumidification function: In some cases, the ventilation effect of the negative pressure fan also helps to exclude humid air, play the role of dehumidification, and maintain the indoor humidity within the appropriate range.
5, air update: negative pressure fan can introduce fresh air, promote indoor air circulation, keep the air fresh, is conducive to personnel health and production efficiency.
6, harmful gas emissions: In some environments that need to deal with harmful gases, negative pressure fans can discharge harmful gases to the outside to ensure indoor air quality.
| Technical Data: | |||||||
| Model | Drive | Blades Diameter(mm) | Blades Rotational Speed(rpm) | Motor Rotational Speed(rpm) | Air Flow (m³/h) | Input Power (W) | Noise (db) |
| 750 | Direct | 600(24in) | 960 | 960 | 10600 | 370 | <70 |
| 1000 | Belt | 910(36in) | 500 | 1400 | 21000 | 550 | <64 |
| 1100 | Belt | 1000(40in) | 470 | 1400 | 31600 | 750 | <64 |
| 1380 | Belt | 1270(50in) | 458 | 1400 | 44000 | 1100 | <64 |
Negative pressure fans play a key ventilation and exhaust role in industry, manufacturing and some special environments, helping to maintain a safe, clean and comfortable working environment,
Negative pressure fans are usually composed of the following parts: air intake, air outlet, blade, motor and housing. The inlet and outlet are the two key parts of the negative pressure fan, which determine the ventilation efficiency and suction force of the negative pressure fan.
The wind blade is the core component of the negative pressure fan, and its shape and quantity directly determine the exhaust air volume and wind pressure of the fan. The motor is the power source that drives the wind blade to rotate, usually using a DC motor or an AC motor. The casing is the shell of the negative pressure fan, which is mainly used to protect the internal parts and reduce noise.
Suitable for high temperature or smelly workshop: such as heat treatment plant, casting factory, plastic factory, aluminum profile factory, shoe factory, leather factory, electroplating factory, various chemical plants. Suitable for labor-intensive enterprises: such as garment factories, various assembly workshops, Internet cafes. Horticultural greenhouse cooling ventilation, livestock pasture cooling. It is especially suitable for places that require cooling and humidity.
Applicable to the field of warehousing and logistics. Negative pressure fan can be installed alone, can also be used together with environmental protection air conditioning and industrial large fan, high temperature environment combination of environmental protection air conditioning, or industrial large fan will be better, cooling ventilation faster and more significant.
Maintenance of negative pressure fan
- Clean up the impurities of the protective net, check the softness of the belt, if it is found to be loose, immediately arrange adjustment and reset.
- Whether the bearing of the motor has abnormal noise, if there is check whether the lubricating oil on the motor is still there! First, disconnect the host power supply and check whether the ground cable is well grounded. Check that screws and coupling shafts are tight.
- Check whether the insulation resistance of the motor meets the requirements according to the instructions and check the contact of the main loop. If the contact is seriously ablated or worn, replace the contact immediately.
- Adjust the tightness of the belt, rotate the wind wheel by hand, and observe whether the rotation is smooth. Check and replace gaskets and sealing fillers between joints.
- Clean the motor wind wheel, filter and inside the casing. In order to prevent rust, the paint should be brushed in time. In order to ensure the flexibility and stability of the coupling and bearing, lubricating oil should be added to the rotating part. Whether the mechanical opening and closing action of the regulating valve is flexible and reliable, and whether the opening and closing Angle mark is clearly visible.
- Whether the indicator light and voltmeter and ammeter are normal. All parts of the fan operate with no noise, and whether the three-phase current value is balanced. Check whether the components in the control box of each remote control point are normal. Perform continuous start-stop operation to check whether the remote control at each point is correct and reliable
