1.First press ——– when we press the head for the first time, the head drives the auxiliary column to compress the spring together through the main column connected;In the process of compressing the spring, the outer wall of the piston is rubbed with the inner wall of the body to promote the piston to open the discharge hole of the auxiliary column.When the piston moves down, the air in the piston body is discharged through the discharge hole of the auxiliary column that has been opened.
2.Repeatedly press ——- to discharge all the air in the body;
3.Suction ——- press the head by hand through the main column, auxiliary column, piston, the common compression spring will exhaust the air in the body, loosen the head, the spring due to the loss of pressure, back (up) motion, this time the piston also through the friction body wall down the movement, the auxiliary column discharge hole closed;At this time, the liquid storage chamber in the body forms a vacuum suction state. The glass ball is sucked upward, and the liquid in the bottle is sucked into the body liquid storage chamber through a straw.
4.Storage of liquid —— Press the head several times and store the liquid to the body through multiple suction until the liquid is full.
5.Outlet ———– when the body liquid storage cavity is full of liquid, press the head again, then the liquid through the discharge hole directly from the mouth;