Flip valve filter tank water and air distribution pipe

Flip valve filter tank water and air distribution pipe

1. Introduction: The water and air distribution system of the flap valve filter is a special type of perforated pipe, which is commonly known as a noodle wrapped pipe due to its cross-sectional shape resembling bread. The principle of water and air distribution is that there are air distribution holes on both sides, water distribution holes at the bottom, and exhaust holes at the top. During backwashing, air and water enter the bread tube through two vertical pipes (usually stainless steel pipes) in the middle channel. Due to the high air pressure, an air cushion layer is formed in the upper part of the bread tube, and air is supplied from the side holes; The lower part is the water layer, and water is distributed through holes at the bottom. 2. The technical parameters of the bread tube water and gas distribution system include uniform backwashing, convenient construction, and simple structure, which have been widely used in recent years. The bread tube material produced by our company is HDPE (high-density polyethylene), and the holes are simultaneously drilled by a self-developed drilling machine. The sealing plates at both ends are welded by a hot melt machine, which has the advantages of accurate hole position, small aperture error, and firm and beautiful appearance. The inlet and outlet risers for bread tubes are generally made of stainless steel material and drilled according to design requirements. During construction, the riser is welded and positioned with the positioning plate, and then pre embedded on the top plate of the middle channel.