As urban and rural sanitation standards continue to rise, the variety of specialized road-cleaning vehicles is constantly expanding. Currently, four mainstream types dominate the market: street sweepers, vacuum sweepers, combination sweeper-scrubbers, and dry-wet dual-mode sweepers—each differing significantly in functionality and operational mode. This often leads to confusion among municipal authorities, sanitation service operators, and industrial park procurement departments during vehicle selection. As a manufacturer operating directly from its original equipment factory, Chengli Special Purpose Vehicle Co., Ltd. draws upon years of experience in sanitation equipment manufacturing and project implementation to comprehensively analyze and compare the structural design, operational principles, applicable road surfaces, and respective advantages and disadvantages of these four core sanitation vehicle types—enabling government agencies and enterprise purchasers to make informed, needs-based procurement decisions. I. Brief Overview of Operating Principles for the Four Sanitation Vehicle Types 1. **Street Sweeper**: A conventional dry-type cleaning vehicle that uses wear-resistant side brushes to gather surface litter, combined with a centrifugal blower generating negative pressure for dust suction. It features a basic water-spraying system for dust suppression but lacks high-pressure washing capability—primarily designed for routine sweeping of general road surfaces. 2. **Vacuum Sweeper**: Features no external brushes or water-spraying components. Equipped with a high-power negative-pressure filtration fan, it performs purely dry, vacuum-based dust collection. Multi-stage filter cartridges capture fine particulates, making it ideal for controlling floating dust and industrial powders (e.g., coal dust, cement powder) with zero secondary dust generation. 3. **Combination Sweeper-Scrubber**: An integrated solution combining curb-side sweeping, high-pressure road washing, and wastewater/garbage recovery. It includes a high-pressure pump, large-capacity clean-water tank, wastewater recovery tank, and lateral spray nozzles. Side brushes sweep debris while high-pressure jets clean curbs and stubborn road grime; all wastewater is recovered on-site—delivering the highest level of cleaning performance. 4. **Dry-Wet Dual-Mode Sweeper**: A versatile, multi-functional vehicle enabling seamless, driver-cabin one-button switching between dry vacuuming and wet scrubbing modes. Dry mode is used on dry, sunny days for dust removal; wet mode activates mist-spray-assisted sweeping during rainy or muddy conditions—ensuring year-round adaptability across variable weather and road conditions. II. Comparative Table of Core Technical Parameters | Vehicle Type | Primary Operation Mode | Key Configurations | Suitable Road Surfaces | Primary Waste Types Targeted | |--------------------------|----------------------------------------------|------------------------------------------------------------------------------------|-----------------------------------------------------|----------------------------------------------------------------| | Street Sweeper | Dry sweeping + water-spray dust suppression | Side brushes, centrifugal blower, small dust-suppression water tank | Urban arterials, industrial parks, scenic areas, smooth asphalt roads | Leaves, gravel, plastic bags, paper scraps, general household waste | | Vacuum Sweeper | Pure negative-pressure dry vacuuming | High-power fan, dust-filter cartridges, suction ducts, no brushes | Coal yards, concrete batching plants, factories, cement-hardened surfaces | Coal dust, sand-lime powder, airborne industrial dust, ultrafine suspended particles | | Combination Sweeper