PROBLEM TO BE SOLVED: To provide a filter washing head capable of suppressing difference of easiness of flow of back wash water between a part of a long hole near a center part in the longer direction on an abutting surface and a part of the long hole near an end part in the same direction on the abutting surface.SOLUTION: In a filter washing head 53, according to a view in the axial direction of a head base pipe 54, vacuum holes 401a, 402a each have a long hole shape extending over the inside and the outside of a passage 541 of the head base pipe 54. A suction nozzle 4 has a hollow part 404 for communicating the vacuum holes 401a, 402a with the passage 541 of the head base pipe 54 on a position overlapping with the vacuum holes 401a, 402a, according to the view in the axial direction of the head base pipe 54.SELECTED DRAWING: Figure 5
【課題】当接面の長手方向における中央部分近傍の長孔の部分と、当接面の同方向における端部近傍の長孔の部分と、における逆洗水の流れやすさの差を抑制することができるフィルタ洗浄ヘッドを提供すること。【解決手段】フィルタ洗浄ヘッド53において、吸引孔401a、402aは、ヘッド基管54の軸方向に視た場合に、ヘッド基管54の流路541の内側と外側とに跨がって延びる長孔状である。吸引ノズル4は、ヘッド基管54の軸方向に視た場合に、吸引孔401a、402aと重なる位置に、吸引孔401a、402aとヘッド基管54の流路541とを連通させる中空部404を有する。【選択図】図5
FILTER WASHING HEAD
フィルタ洗浄ヘッド
2017-06-15
Patent
Electronic Resource
Japanese
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