How the emulsion pump head works

Update:01 Nov 2019
Summary:

1. First press--------When we press the head (ACTUATOR) […]

1. First press--------When we press the head (ACTUATOR) for the first time, press the head through the connected main column (STEM) to drive the sub-column (SUB-STEM) together with the compression spring (SPRING); During the process, the outer wall of the piston (PTSTON) rubs against the inner wall of the body to urge the piston to open the discharge hole of the sub-column (SUB-STEM); when the piston (PTSTON) slides down, the body (HOUSING) Air is discharged through the secondary sub-column (SUB-STEM) discharge opening;
2. Reciprocating multiple presses ------- all the air in the body (HOUSING) is discharged;
3. Aspiration ------- Press the head (ACTUATOR) through the main column (STEM), the secondary column (SUB-STEM), the piston (PTSTON), the common compression spring (SPRING) to the body (HOUSING) After the air inside is discharged, release the actuator (ACTUATOR), the spring (SPRING) moves back (up) due to the loss of pressure. At this time, the piston (PISTON) also moves downward through the inner wall of the friction body (HOUSING), and the secondary column The discharge hole of (SUB-STEM) is closed; at this time, the liquid storage chamber in the body (HOUSING) forms a vacuum suction state, sucks the glass ball (BALL) upward, and sucks the liquid in the bottle through the suction pipe (DIPTUBE). The body (HORSING) in the reservoir.
4. Storage of liquid ------ Press the head several times, and store the liquid to the body by multiple aspirations until the liquid is full.
5. Discharge----------- When the liquid in the HOUSING reservoir is full, press the ACTUATOR again and the liquid passes through the discharge hole directly from the nozzle (ACTUATOR). ejection.

 

https://www.jdfsprayer.com/product/lotion-pump/