Four-corner flange center line-type butterfly valve body

The utility model discloses a quadrangular flange center line butterfly valve body which comprises a valve body and flanges on the two sides of the valve body. The valve body is characterized in that four right-angle-shaped anchor blocks are arranged at the center line of the valve body between the flanges on the two sides in the circumferential direction, and threaded holes are formed in the right-angle face of the outer side of each anchor block and can be used as anchor mounting holes and hoisting holes. A traditional anchor design mode is changed, the actual requirements for horizontal and vertical installation of the butterfly valve are met, compared with an existing flange provided with an anchor, the structure is simpler, machining and clamping of the flange are not affected, and in addition, the anchor is arranged on the waist portion, so that connection and arrangement of pipelines are facilitated. Meanwhile, the strength of the outer wall of the valve cavity of the valve body is improved, and the si