Spacing member, membrane element, and immersed membrane separation device
A technology for holding members and membrane elements, which is applied to the fields of membrane elements, immersed membrane separation devices, and spacer holding members, and can solve the problems that the cleaning effect of the membrane surface cannot be fully obtained, and the central part is weakened.
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no. 1 Embodiment approach
[0058] Below, refer to Figure 1 to Figure 5A , Figure 5B The first embodiment of the present invention will be described.
[0059] Such as figure 1 As shown, reference numeral 31 is an immersion-type membrane separation device for performing membrane filtration. The immersion-type membrane separation device 31 is immersed in a liquid 33 to be treated such as organic waste water and installed in a treatment tank 32 . The submerged membrane separation device 31 is composed of a plurality of membrane modules 34 stacked in the vertical direction A.
[0060] Such as Figure 2 ~ Figure 4 As shown, each membrane module 34 has a pair of left and right water collection boxes 35a, 35b and a plurality of membrane elements 36 arranged and fixed between the water collection boxes 35a, 35b. The water collection boxes 35a and 35b are each a quadrangular box-shaped member, and has a water collection space 43 inside.
[0061] The respective membrane elements 36 are arranged in parallel...
no. 2 Embodiment approach
[0079] Next, refer to Figure 6 , Figure 7A , Figure 7B A second embodiment of the present invention will be described.
[0080] The spacer 60 of the aforementioned first embodiment has a pair of two spacers 61a, 61b, and in the second embodiment, as Figure 7A , Figure 7B As shown, the spacer member 60 is formed in a comb-tooth shape having two or more spacers 61a to 61f. The upper ends of the respective spacers 61 a to 61 f are connected to each other in the thickness direction B of the membrane element 36 by the long connection part 62 .
[0081] The fixing device 63 has a bolt 64 spanned between the lower ends of the respective partitions 61 a to 61 f , and a nut 65 screwed to the bolt 64 . Among them, the bolts 64 are freely inserted and removed in the thickness direction B of the membrane element 36 with respect to the bolt holes 66a to 66f formed in the lower end portions of the respective spacers 61a to 61f.
[0082] Hereinafter, the operation of the above con...
no. 3 Embodiment approach
[0088] Next, refer to Figure 8 , Figure 9A , Figure 9B A third embodiment of the present invention will be described.
[0089] The spacer member 60 is divided into upper and lower parts of an upper (one) spacer 70 and a lower (other) spacer 71 . The upper spacer 70 is formed in a comb-tooth shape having a plurality of upper spacers 72a to 72f. The upper ends of the respective upper spacers 72 a to 72 f are connected to each other in the thickness direction B of the membrane element 36 by the long upper connecting portion 73 . Protrusions 76 protruding downward are formed at the lower ends of the respective upper partitions 72a to 72f.
[0090] The lower spacer 71 is formed in a comb-tooth shape having a plurality of lower spacers 74 a to 74 f in the same manner as the upper spacer 70 , and the lower ends of the lower spacers 74 a to 74 f are connected to each other by the lower connecting portion 75 . link. Recesses 77 are formed at the upper ends of the respective lo...
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