The key to a good pump head is to pay special attention to the following places

The key to a good pump head is to pay special attention to the following places

The working principle of the pump head: Manually press down the pressure handle, the volume in the spring chamber decreases, the pressure rises, the liquid enters the nozzle cavity through the hole of the valve core, and then sprays the liquid out through the nozzle, then release the pressure handle, the volume in the spring chamber increases, forming a negative pressure, the ball opens under the negative pressure, the liquid in the bottle enters the spring chamber, at this time there is a certain amount of liquid in the valve body, and when the handle is pressed again, it is stored in the valve The liquid in the body will rush up and spray out through the nozzle;

The key to a good pump head is to pay special attention to the following places:

1. The glass ball or steel ball under the spring, the seal here is very important, it is related to the strength of the liquid in the spring cavity rushing up, if there is leakage here, when the pressure handle is pressed, part of the liquid will leak into the bottle And affect the effect of liquid to spray;

2. It is the sealing ring at the upper end of the valve body. If there is a leak here, when the pressure handle is released, the upward force of the liquid will be reduced, resulting in a small amount of liquid stored in the valve body, which will also affect the spray effect;

3. The fit between the pressure handle and the valve core. If the fit is loose and there is leakage, there will be a certain resistance when the liquid rushes up to the nozzle, and the liquid will flow back. If the leak here 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, please refer to the next page to explain the nozzle design in detail;

Therefore, the function of the general pump head is to detect these four positions, and other appearance and coordination problems are detected according to the routine.