Manually press down on the pressing handle, the volume […]
Manually press down on the pressing handle, the volume in the spring chamber is reduced, the pressure is increased, the liquid enters the nozzle cavity through the hole of the valve core, and then the liquid is ejected out through the nozzle. At this time, the pressing handle of the Foam Pump(KEXON) is released, and the spring cavity is released. The volume increases, a negative pressure is formed, the sphere opens under the action of negative pressure, and the liquid in the bottle enters the spring chamber. At this time, there is already a certain liquid in the valve body, and the liquid stored in the valve body when the handle is pressed again Rush up and spray through the nozzle.
From the above working principle, a good foam pump head is particularly important in the following places: 1. Glass beads or steel balls under the spring, the seal here is very important, which is related to the liquid in the spring cavity. Strength, if leaking here, when the presser is pressed, the liquid will leak to the inside of the bottle and affect the effect of the liquid spray; 2. It is the seal ring at the upper end of the valve body. If it leaks, when the pressure handle is released When the liquid draws upward, the force is reduced, and the amount of liquid stored in the valve body is small, which also affects the spray effect; 3. The cooperation between the pressure handle and the valve core, if the loose fit and leakage, When the liquid rushes up to the nozzle, there will be some resistance, and the liquid will flow back. If it leaks here, it will also affect the spray effect. 4. The design of the nozzle, the design of the nozzle is directly related to the effect of the spray. The next page explains the nozzle design problem in detail; Therefore, the function of the general pump head also detects these four positions, and other appearances and problems in coordination are detected by routine.