The classification purpose of the liquid pump

1. Tightly fixed liquid pump

The tight -type pump is usually used for low -voltage direct pipelines. The sealing performance depends entirely on the good or bad of the condensation between the plug and the plug. Generally used for PN ≤ 0.6MPa.

Second, the pump of the filler liquid

The pump of the filler solution is sealed by compressing the filling. Because of the filler, the sealing performance is better. Generally, the pump under this fluid has a filler cover. The plug does not need to extend the valve body, which reduces the leakage path of a working medium. This liquid pump is used in a large amount of PN≤1MPa pressure.

Third, self -sealing solution pump

The pump of the self -sealing solution is tightly sealed by the pressure of the plug and the plug through the pressure of the medium itself. The small head of the plug stretching out of the body, the medium enters the plug head through the small holes in the import, and press the plug upwards. This structure is generally used in the air media.

Fourth, oil sealing liquid pump

Oil sealing pumps with mandatory lubrication appear. Due to the forced lubrication, a layer of oil film is formed between the cover of the plug and the plug. In this way, the sealing performance is better.

The special liquid pumps used in industrial enterprises are mainly high temperature pumps, that is, the medium transported by the pump under the liquid pump is high temperature liquid. If the high -temperature medium is transported is high -temperature liquid melting salt, this pump is pump under the salt liquid, referred to as melt salt pump. For high temperature pumps, the pump is required to be high to resist, so it has its particularity in the structure design and material selection of the pump.