1. A floor drain consists of a cover plate, lower filter screen, odor-proof cover bowl, water seal for odor prevention, and drain outlet.

2. The main functions of a floor drain are to prevent odors, backflow, clogging, viruses, cockroaches, and drying out (primarily applied in water-sealed types).

3. The quality of a floor drain is mainly evaluated based on four aspects: drainage speed, odor prevention effectiveness, ease of cleaning, and durability without mechanical action.

4. The odor-proof water seal of a floor drain should not be less than 50mm.

5. Floor drains in workshops must have measures to prevent solid objects from entering. Workshop floor drains should use water-sealed types such as U-shaped or S-shaped to prevent insects and odors.

6. One of the sources of odors in workshops is the dispersion from floor drains to various areas. An ideal floor drain should have a water seal, preferably a disinfectant liquid seal with a height of over 7 cm, to prevent odor backflow, similar to a toilet U-trap. However, pay attention to the liquid level height to avoid failure due to evaporation during prolonged shutdowns. If small flying insects like drain flies appear in the workshop, they likely come from floor drains. It is not recommended to install floor drains at the bottom of equipment. Floor drains that retain water for long periods create high humidity and accumulate residues, making them a significant source of contamination and an ideal breeding ground for microorganisms, especially mold.

7. Floor drains in workshops must have measures to prevent solid objects from entering. Workshop floor drains should use water-sealed types such as U-shaped or S-shaped to prevent insects and odors.

Regarding floor drains, most on the market use inverted water seals, which cause poor drainage when covered (water flow efficiency is too low) and allow pipe odors to escape when uncovered (due to insufficient water seal height). Additionally, the bottom of the drain often accumulates water year-round, making it impossible to clean thoroughly. National standards specify: 1. For water-sealed floor drains, the water seal depth should not be less than 50mm.

Bell-type water seal structures and water seal cores inserted into pipes are strictly prohibited. Mechanical anti-drying components should not replace water seals.

Floor drain composition:

Main drainage well body, removable high-level water diverter, debris separation plate, sealing cover plate.

Floor drain requirements:

Food factory floor drains must comply with HACCP and GMP standards, have good drainage performance, and be suitable for food industry applications.

The material of the floor drain must meet food-grade requirements (304 stainless steel).

The floor drain must have a built-in odor-proof water seal with a height of no less than 50mm.

The floor drain must have a debris separation function and be equipped with a sealing cover plate.

Internal components of the floor drain must be fully removable for thorough cleaning.

Types of floor drains:

Circular: Generally used alone and not connected to trenches.

Square: Used in connection with trenches.

Note: For aesthetic purposes, the style of the floor drain cover plate usually matches the trench cover plate, but it can also be selected separately (grille cover plate/flat cover plate).