Road sweepers have adopted a variety of technologies and operating methods to reduce dust pollution. The following are their main measures:
1. **Spray dust suppression function**
Road sweepers are equipped with a spray system, which uses a high-pressure spray device to atomize water and spray it on the cleaning area, so that dust particles in the air combine with water mist and settle on the ground, thereby reducing dust. For example, Zoomlion Environmental's multifunctional dust suppression vehicle uses a two-stage impeller combination to increase wind pressure and wind speed, with good atomization effect and wide coverage, which can effectively suppress dust. In addition, some sweepers are also equipped with tail spray devices to continuously spray moisture during operation to further reduce dust.
2. **Wet sweeping operation**
Wet sweeping is to flush the road with a sprinkler or a washing and sweeping vehicle, so that dust and garbage are moisturized before sweeping, reducing the generation of dust during the sweeping process. For example, the Yuquan District Sanitation Service Center adopts a joint operation mode of "sprinkler + washing and sweeping vehicle", which keeps the road surface moist through uninterrupted sprinkling and washing and sweeping, effectively suppressing dust.
3. **Combination of high-pressure cleaning and vacuuming**
Some sweepers adopt an integrated design of high-pressure cleaning and vacuuming. First, the road surface is washed with high-pressure water flow, and then the sewage and garbage are sucked into the garbage bin with strong suction to prevent sewage and dust from flying again. For example, Yutong Environmental Sanitation's washing and sweeping vehicles have multiple functions such as high-pressure cleaning, vacuum recovery, and spray dust reduction, which can effectively reduce dust.
4. **Wet and dry operation mode**
Some advanced sweepers have wet and dry functions, and can choose the operation mode according to different road conditions. In a dry environment, the vacuuming mode is used to remove dust; in slippery or waterlogged areas, switch to the wet operation mode, and prevent dust from flying by combining water spraying and vacuuming.
5. **Enclosed garbage bin design**
In order to prevent garbage and dust from leaking during transportation, the garbage bin of the sweeper adopts a closed design to ensure that the garbage and sewage after cleaning will not overflow and reduce secondary dust.
6. **Intelligent operation management**
Some road sweepers are equipped with intelligent operating systems, which can automatically adjust the cleaning mode and spray volume according to road conditions to achieve precise dust reduction. For example, Hongyu vacuum cleaners use intelligent monitoring systems to monitor the operation status in real time, optimize the cleaning route and time, and improve operation efficiency.
7. **Multi-machine linkage and refined operation**
In actual applications, road sweepers are often used in conjunction with other sanitation equipment (such as sprinklers, high-pressure washing vehicles, dust suppression fog cannons, etc.) to form a "multi-machine linkage" operation mode. This mode uses multiple processes such as sprinkling, washing, sweeping, and dust reduction to work together to comprehensively reduce road dust.
Through the above technologies and operation methods, road sweepers have played an important role in reducing dust pollution and provided strong support for the improvement of the urban environment.