Pump

A pump housing comprises a circumferential wall forming an outer wall of the pump housing; a pump casing which connects to the circumferential wall on a first outer side to form a first chamber, the pump casing comprising a central opening to form an axial supply of the pump housing for material to be pumped; and pressurizing means to pressurize the first chamber. 一种泵壳体包括形成泵壳体的外壁的周向壁；泵壳，该泵壳在与第一外侧上连接至周向壁以形成第一腔室，该泵壳包括中央开口以形成泵壳的用于待泵送材料的轴向供应部；以及加压装置，该加压装置对第一腔室进行加压。