Mobile Public Toilet Urinal
The types, materials, and designs of mobile public toilet urinals vary depending on the sewage treatment method. Common types include flush-type, waterless suction-type, recirculating flush-type, and dry-packing-type. The materials are mostly corrosion-resistant plastics or stainless steel, with designs focusing on splash prevention, easy cleaning, and water conservation.
1. Flush-Type Urinal
Flush-type mobile toilets use water from a tank or municipal water supply system to flush the urinal. The urinal design is similar to that of traditional fixed toilets but requires optimization for water conservation. Materials typically include high-density polyethylene (HDPE) or stainless steel. HDPE is corrosion-resistant and lightweight, while stainless steel is durable and easy to clean. Design features include sloped bowl walls to reduce residue, splash-proof edges, and drainage filters to prevent clogging from debris. Some models are equipped with foot-pedal or sensor-activated flushing mechanisms to reduce contact contamination risks.
2. Waterless Suction-Type Urinal
Waterless suction-type toilets rely on vacuum pumps or negative pressure systems to suction feces and urine into sealed storage tanks, requiring urinal structures adapted to negative pressure environments. Materials are mostly reinforced fiberglass or engineering plastics to ensure airtightness and pressure resistance. Design features include a flattened bowl body to reduce residue space, a sealed rubber ring at the bowl opening to prevent odor leakage, and some models use disposable plastic bag liners to simplify cleaning. These urinals do not require flushing and are suitable for water-scarce areas or temporary events.
3. Recirculating Flush-Type Urinal
Recirculating flush-type toilets purify sewage through biological degradation or chemical treatment for reuse, requiring urinals to be designed in coordination with the treatment system. Materials are typically corrosion-resistant PVC or stainless steel to withstand prolonged contact with treatment fluids. Design features include a double-layer bowl structure with an inner anti-stick coating to reduce dirt adhesion, drainage filters to intercept solid waste, and some models are equipped with liquid level sensors to automatically control flush volume. These urinals require regular maintenance of the treatment system to ensure water quality standards are met.
4. Dry-Packing-Type Urinal
Dry-packing-type toilets use biodegradable plastic bags or solid adsorbents to collect excreta, requiring urinal designs that simplify cleaning steps. Materials are mostly lightweight plastics or aluminum alloys for easy mobility and component replacement. Design features include a detachable bowl body for direct replacement of packing bags, a sealed lid at the bowl opening to prevent odor diffusion, and some models use foot-pedal opening mechanisms to reduce hand contact. These urinals do not require water or electricity support and are suitable for wilderness or disaster emergency scenarios.
Summary: The design of mobile public toilet urinals must balance functionality and practicality, with material selection focusing on corrosion resistance and easy cleaning. Types are differentiated based on sewage treatment methods. Flush-type and recirculating flush-type urinals emphasize water conservation and purification, while waterless and dry-packing-type urinals highlight waterless operation and convenience, collectively meeting sanitation needs in various scenarios.
