How lotion pump heads work

Update:29-11-2019
Summary:

1. The first press -------- When we press the actuator […]

1. The first press -------- When we press the actuator for the first time, the actuator pushes the sub-stem (SPRING) together with the main post (STEM) through the connected main post (STEM); During the process, the outer wall of the piston (PTSTON) frictions with the inner cavity wall of the body (HOUSING), causing the piston to open the discharge hole of the sub-stem (SUB-STEM); when the piston (PTSTON) slides down, the inner part of the body (HOUSING) Air is discharged through the discharge hole of the sub-stem that has been opened;
2. Press it back and forth multiple times ------- exhaust all the air in the body (HOUSING);
3. Liquid absorption ------- Press the actuator (ACTUATOR) by hand to pass the main column (STEM), sub column (SUB-STEM), piston (PTSTON), common compression spring (SPRING) and the body (HOUSING) After the air inside is released, 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) to move the auxiliary column. The discharge hole of (SUB-STEM) is closed; at this time, the liquid storage cavity in the body (HOUSING) forms a vacuum suction state, suck up the glass ball (BALL), and suck the liquid in the bottle through the suction tube (DIPTUBE) to suck the liquid Inside the body (HORSING) reservoir.
4. Store the liquid ------- Press the head several times and absorb the liquid several times to store the liquid in the body until the liquid is full.
5. Dispensing liquid ----------- When the liquid in the HOUSING storage chamber is full, press the ACTUATOR again, and the liquid passes through the discharge hole directly from the ACTUATOR. ejection.

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