臥式泡沫泵的葉輪運行原理是利用葉輪將液體吸入泵體，然后將其壓縮并推出泡沫出口。在此過程中，氣體從氣體進口進入泵體，與液體混合形成泡沫。

當液體被吸入到葉輪中時，由于葉輪的旋轉，液體被迫跟隨葉輪一起旋轉。同時，氣體也被吸入到液體中，與液體充分混合。由于氣體的存在，液體中的泡沫量增加，從而提高了泡沫的產生效率。

在葉輪的作用下，液體和氣體混合后形成的泡沫被推向泵體的出口。泡沫通過出口排出，供給到需要的地方。在這個過程中，泡沫的壓力和流速都會影響其產生效果。因此，在設計和使用臥式泡沫泵時，需要考慮泡沫的產生效率、壓力和流速等因素，以達到最佳的使用效果。

The operating principle of the impeller of the horizontal foam pump is to use the impeller to suck the liquid into the pump body, then compress it and push it out of the foam outlet. In this process, the gas enters the pump body from the gas inlet and mixes with the liquid to form foam.

When the liquid is sucked into the impeller, due to the rotation of the impeller, the liquid is forced to rotate along with the impeller. At the same time, the gas is also sucked into the liquid and fully mixed with the liquid. Due to the presence of gas, the amount of foam in the liquid increases, thus improving the production efficiency of foam.

Under the action of the impeller, the foam formed after the liquid and gas are mixed is pushed to the outlet of the pump body. The foam is discharged through the outlet and supplied to the place where it is needed. In this process, the pressure and flow rate of foam will affect its effect. Therefore, when designing and using horizontal foam pumps, factors such as foam production efficiency, pressure and flow rate need to be considered to achieve the best use effect.