The water curtain sprinkler is a spraying device fixed in the pipe of the water curtain system, which is used to continuously spray water to form a water curtain to protect the surface threatened by fire and form a fire separation.

Water curtain sprinklers are classified according to their use and can be divided into curtain type water curtain nozzles, window type water curtain nozzles and cornice type water curtain nozzles.

1. Curtain type water curtain nozzle

There are two types of curtain type water curtain nozzles: slit type and rain type.

①Slit water curtain sprinkler. It has two types: single slot and double slot. The single-gap water curtain sprinkler has a water outlet gap and the spraying angle is 190°; the double-gap water curtain sprinkler has two parallel water outlet gaps. After the water is sprayed, the water is quickly merged into 150 due to the mutual ejection between the two layers of water. ° plate-shaped water curtain, when the two water curtains merge, they collide to form a good water mist, which enhances the cooling and blocking radiant heat effect.

Slit water curtain sprinklers are suitable for separating the stage and the auditorium at the entrance of the stage, or in the open-air production device area, dividing the open-air production device into several communities, or protecting local individual buildings or equipment.

②Rain shower type water curtain nozzle. The instant-open sprinkler has the same structure as the open sprinkler of the rain shower system. Rain shower nozzles are used to protect large openings, where fire-resistant water curtains are used, such as escalators in public places such as shopping malls, spiral stairs through the openings of the floor, or larger openings opened due to process requirements Locations (These locations are difficult to prevent the spread and expansion of the fire with general water curtain nozzles).

2. Window type water curtain sprinkler

The water curtain sprinklers added to prevent the spread of fire through windows or to enhance the fire resistance of window sashes, fire shutters and fire curtains are generally called window water curtain sprinklers.

3. Cornice type water curtain sprinkler

The cornice type water curtain sprinkler is used to prevent the threat to the eaves or increase the fire resistance of the eaves when a fire occurs in the neighboring buildings.

(2) Classification according to use purpose

Water curtain sprinklers are classified according to their use and can be divided into fire separation water curtain sprinklers and protective cooling water curtain sprinklers.

1. Fire separation water curtain sprinkler: refers to the water curtain sprinkler that forms a water wall or water curtain by intensive spraying to prevent the spread of fire and heat.

2. Protective cooling water curtain sprinkler: refers to the water curtain sprinkler that sprays directly on the protected object to achieve the purpose of cooling and cooling.