The pump body and cover are equipped with replaceable high chromium wear-resistant alloy (or wear-resistant and corrosion-resistant rubber) lining. The pump body and cover are made of gray cast iron or nodular cast iron according to the working pressure. They are vertically split and connected with bolts. The pump body has a stop and is connected with the bracket by bolts. The vane outlet of the pump can be rotated and installed at eight angles. By adjusting the bolts, the relative position of the bearing assembly and the bracket body can be adjusted to change the front and rear clearance of the impeller in the pump body, so that the pump can always operate in an efficient condition.

This series of products are divided into horizontal double pump shell ZM series, horizontal single pump shell ZMS series and vertical liquid single pump shell ZMP series.

The utility model has the advantages of strong abrasion resistance, long trouble free working time and long running time in high efficiency area.