Generally, the parts that constitute this channel are the pressure head and nozzle, and the foam pump will be equipped with a filter tube. The material in the container is acted by the pump core to reach the channel outside the container. The discharge channel will determine the spit state of the material, whether it is mist, liquid, or foam.

    The parts that constitute the suction channel are generally the suction pipe connected to the end of the cylinder. For vacuum pumps, there is no suction pipe. The continuous upward movement of the large piston in the container or the shrinkage of the soft container ensures that the material body continues to contact the cylinder tail hole.

    The pumping system generally consists of cylinders, pistons, ball valves, connecting rods, and plug sleeves (lock covers). Under the action of the force, the piston reciprocates in the cylinder body, and the valve structures arranged at the front and rear ends of the pump body will open and close sequentially. The process of reaching the outside of the container through the discharge channel is a system action completed by the cooperation of multiple parts. The parts that make up the system are generally composed of cylinders, pistons, valves, connecting rods, plug sleeves, and the coordination of the power mechanism.

    The piston needs to be under the action of force to reciprocate in the cylinder. The power source of the downward stroke is applied by the user outside so that the upper-pressure rod drives the piston to overcome the spring force and the friction between the piston and the cylinder to move downward. When the user releases the external force, the piston moves in the opposite direction under the action of the spring force. The main parts that make up the mechanism are the upper-pressure rod and the spring, which must be attached to the structure with the cylinder and other parts as the base to function.