Flap valve with opening-closing and anti-blocking structure

Abstract

The invention discloses a flap valve with an opening-closing and anti-blocking structure. The flap valve is characterized in that a flow guide sleeve is arranged in a box body; the flow guide sleeve is in a tetragonal form with a large upper opening and a small lower opening; the upper opening of the flow guide sleeve is embedded in an upper connecting surface of the box body; the lower opening ofthe flow guide sleeve is a crossed conical surface of 90 to 100 degrees; the lower opening part of the flow guide sleeve is a valve plate; the upper ends of a left valve plate and a right valve plateare welded to a left valve plate sleeve and a right valve plate sleeve respectively; the left valve plate sleeve and the right valve plate sleeve are fixedly connected with a first rotating shaft anda second rotating shaft respectively; the first rotating shaft and the second rotating shaft are fixed to the interior of the box body through bearing seats; the first rotating shaft and the second rotating shaft rotate to drive the corresponding valve plates to rotate to be opened or closed; the first rotating shaft and the second rotating shaft are connected with a valve plate control system; and a negative pressure meter is arranged on the lower part of an air box. The flap valve has the effects of saving energy and being safe and reliable in operation.

Description

technical field [0001] The invention relates to a bellows flap valve of a pulverized coal sintering machine. Background technique [0002] The existing flap valve for the air box of pulverized coal sintering machine adopts the structure of adding a flap in the bellows. Due to structural reasons, the area of ​​the flap is large, the negative pressure difference between the upper and lower sides is large, and it is difficult to turn the flap, which is flexible. The temperature is poor, and the flap is often blocked by the falling charge, which seriously affects the normal production. Contents of the invention [0003] The object of the present invention is to provide a flap valve with opening and closing and anti-blocking structure which can conveniently control the opening and closing of the valve and effectively prevent the valve plate from being blocked by the falling furnace material. [0004] Technical solution of the present invention is: [0005] A flap valve with a...

AI Technical Summary

Problems solved by technology

[0002] The existing flap valve for the air box of pulverized coal sintering machine adopts the structure of adding a flap in the bellows. Due to structural reasons, the area of ​​the flap is large, the negative pressure difference between the upper and lower sides is large, and it is difficult to rotate the flap. The degree is poor, and the flap is often blocked by the falling charge, which seriously affects the normal production

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