From cleaning to personal beauty, many people use spray bottles every day, but few people know how they work. The spray bottle is designed to draw liquid from the bottle using a one-way valve. A pump powered by a trigger forces liquid through a nozzle that ruptures the flow of liquid, turning it into a fine mist or stream of water.
bottle
The bottle is a reservoir from which the pump draws liquid when the user presses the trigger onto the spray bottle. The liquid is moved from the bottle to the tube. Spray bottles and other types of pumps (such as pumps in soap dispensers) are similar to tubes and reservoirs. For thinner liquids (such as cleaning products), thinner tubes can be used, but for thicker liquids (such as hand sanitizers), thicker tubes are needed to pump the liquid.
Water pump
The pump is the main working part of the spray bottle. The pump consists of a trigger mechanism, a piston, a cylinder and a check valve. When the user presses the trigger, it forces the piston into the cylinder, forcing the liquid to flow through the nozzle as a concentrate. When the trigger is released, the piston moves back and pulls the liquid back into the cylinder. The liquid is forced to leave the nozzle the next time the trigger is pressed. The check valve at the bottom of the pump only allows liquid to flow up the tube to the pump and not to the bottle.
nozzle
The nozzle of the spray bottle concentrates the liquid into a liquid by forcing it through a small hole. The spray bottle nozzle also has a check valve that prevents air from flowing back into the pump and allows suction in the pump to draw liquid up into the tube. Without this valve, the pump will draw air back into the tank instead of drawing it out of the bottle.
Other design elements
Some nozzles have a built-in screen with a number of fine holes that allow the liquid to emerge like a mist, and some of the nozzles can be tightened to lock the bottle and prevent liquid from escaping. Some of the tubes on the spray bottle also have a wider portion at the bottom to facilitate liquid absorption. Sometimes there is a screen on the wider tube end to prevent solid material from being drawn into the tube.
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