VOLUTE PUMP

• Main Authors: SHOJI KENTA, SAKAGAMI HIROMI, ISONO MIHO, OBUCHI SHINJI, UCHIDA HIROSHI, KAWAI MASATO
• Format: Patent
• Language: English; Japanese
• Published: 04.11.2016
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

PROBLEM TO BE SOLVED: To provide a volute pump that can prevent fibrous materials released to a volute chamber from accumulating on a tongue part.SOLUTION: An volute pump comprises: an impeller 1 that includes blades 2; and an impeller casing 5 that houses the impeller 1. The impeller casing 5 comprises: a volute chamber 7; a suction port 3 and a discharge port 4 that communicate with the volute chamber 7; and a tongue part 10 that constitutes a winding start part of the volute chamber 7. A groove 18 that extends from the suction port 3 to the volute chamber 7 is formed in an inner surface of the impeller casing 5. As viewed from an axial direction of the impeller 1, an intersection point B at which ends of the blades 2 intersect the groove 18 is located on the side opposite to the tongue part 10 with respect to a center point of the impeller 1.SELECTED DRAWING: Figure 10 【課題】ボリュート室に放出された繊維状物質の舌部への堆積を防止することができる渦巻ポンプを提供する。【解決手段】渦巻ポンプは、翼２を有する羽根車１と、羽根車１を収容する羽根車ケーシング５とを備える。羽根車ケーシング５は、ボリュート室７と、ボリュート室７に連通する吸込口３および吐出口４と、ボリュート室７の巻き始め部を構成する舌部１０とを備える。羽根車ケーシング５の内面には、吸込口３からボリュート室７まで延びる溝１８が形成されている。羽根車１の軸方向から見て翼２の終端が溝１８を横切る交点Ｂは、羽根車１の中心点に関して舌部１０の反対側に位置する。【選択図】図１０