JP2019051463A - Water collection structure - Google Patents

Abstract

To further improve the assembly efficiency and maintainability of the membrane filtration apparatus.SOLUTION: The water collection part 1 as a water collection structure for filtered water obtained by solid-liquid separation comprises a unit water collecting part 10, which is connected with a filtered water outlet part of a membrane element used for solid-liquid separation and to which the filtered water is introduced from the membrane element. The water collecting part 1 is configured by connecting the unit water collecting part 10 in series with other unit water collecting parts 10. The unit water collection part 10 includes: a water collection main body 11, which causes filtered water to pass therethrough; and an insertion unit 12, which is inserted into the water collection main body 11 of another unit water collection unit 10. In the peripheral wall portion of the water collection main body 11, an insertion groove 13, into which the insertion portion 12 of the another unit water collection portion 10 is inserted, is formed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a water collection structure for filtered water obtained by solid-liquid separation.

  As an example of improving the efficiency of the assembly of the membrane filtration device, for example, the immersion membrane filtration device of Patent Document 1 can be cited. By using an elastic tube and a one-touch joint together, Connection with the filter connection port is easy.

  In the membrane module of Patent Document 2, the water collecting part can be divided into a plurality of unit parts, so that the workability when the membrane module is added is improved, and the constituent material of the water collecting part is stainless steel. An inexpensive material such as a resin is applied instead of the product.

JP 2007-83229 A JP 2009-113042 A

  However, the membrane filtration device of Patent Document 1 must release both the water collecting pipe and the tube connected to the membrane element during maintenance (exchange due to membrane damage or the like).

  In the membrane separation apparatus, the interval between the membrane surface of the filtration membrane is important for cleaning the membrane surface, and the membrane elements are arranged at a predetermined interval in order to effectively wash the membrane surface with the cleaning air.

  However, in the membrane module of Patent Document 2, the branch pipe is not formed at the portion where the divided main pipe connection portions of the water collecting portion are overlapped, so that there is a restriction on the interval between the plurality of filtration membrane elements arranged in parallel.

  In view of the above circumstances, an object of the present invention is to further improve the efficiency of assembly of a membrane filtration device and maintainability.

  Therefore, one aspect of the present invention is a water collection structure for filtered water obtained by solid-liquid separation, and is connected to a filtered water outlet of a membrane element used for solid-liquid separation. The unit water collecting part can be connected in series with the other unit water collecting parts.

  In one aspect of the present invention, the unit water collecting portion includes a water collecting main body portion through which the filtered water is circulated, and an insertion portion that is inserted into the water collecting main body portion of the other unit water collecting portion.

  In one aspect of the present invention, an insertion groove into which the insertion portion of the other unit water collecting portion is inserted is formed in the peripheral wall portion of the water collecting main body portion.

  In one aspect of the present invention, an insertion receiving portion that fits into an insertion portion of another unit water collecting portion is formed on the peripheral wall portion of the water collecting main body portion.

  In one aspect of the present invention, the water collection main body includes a connection part in which a first connection hole into which the filtrate extraction part of the membrane element is inserted is provided, and the unit water collection is provided in the insertion part. A second connection hole is formed which communicates with the first connection hole of the connection part of the other unit water collecting part when the part is connected in series with the other unit water collecting part.

  In one aspect of the present invention, a connection member that is fitted and inserted into the connection portion is attached to the filtered water extraction portion, and the connection member and the connection portion are sealed in a liquid-tight manner. A water stop member is further mounted.

  In one aspect of the present invention, the filtered water extraction portion is further equipped with a water stop member that seals between the filtered water extraction portion and the connection portion in a liquid-tight manner.

  In one aspect of the present invention, the connection portion, and the first and second connection holes are symmetrically arranged and formed with the axial direction of the water collection main body portion as a symmetry axis.

  In one aspect of the present invention, the water collection main body is formed of a cylindrical body having a polygonal cross section.

  According to the present invention described above, the assembly efficiency and maintenance of the membrane filtration device are further improved.

(A) The front view of the unit water collection part of the water collection part in Embodiment 1 of this invention, (b) is a side view of the said unit water collection part, (c) The assembly example of the said water collection part. 1 is a front view of a membrane element according to Embodiment 1. FIG. (A) Connection example of membrane element of first embodiment and water collecting section, (b) Cross sectional view of the water collecting section to which the membrane element is connected. The cross-sectional view of the water collection part to which the membrane element in Embodiment 1 was connected. (A) The front view of the unit water collection part in Embodiment 2 of this invention, (b) is a side view of the said unit water collection part. (A) Application example of a water collection unit connected to the header and footer of the membrane element, (b) Application example of a water collection unit to which the membrane element is connected in pairs.

  Embodiments of the present invention will be described below with reference to the drawings.

[Embodiment 1]
A water collecting portion 1 of the present embodiment shown in FIG. 1 is an aspect of the water collecting structure of the present invention, and is connected to a membrane element 2 used for solid-liquid separation exemplified in FIG. The number of membrane elements 2 can be increased according to the number.

(Configuration example of the water collecting unit 1)
As shown in FIG. 3, the water collecting unit 1 includes a unit water collecting unit 10 to which a membrane element 2 is connected and filtered water is introduced from the membrane element 2.

  The unit water collecting section 10 is produced by injection molding using a resin material such as polyethylene, polypropylene, polyvinyl chloride, a composite material of polyvinyl chloride and fiber reinforced plastic, a composite material of polyethylene and fiber reinforced plastic, or the like. Is done.

  The unit water collecting unit 10 illustrated in FIG. 1 is formed of a cylindrical body having a polygonal cross section, and can be connected in series with other unit water collecting units 10 as shown in FIG. .

  Furthermore, the unit water collection part 10 has the water collection main-body part 11 which distribute | circulates filtered water, and the insertion part 12 inserted in the water collection main-body part 11 of the other unit water collection part 10. FIG. An insertion groove 13 into which the insertion portion 12 of another unit water collection portion 10 is inserted is formed in the peripheral wall portion of the water collection main body portion 11.

  In addition, as shown in FIG. 3, a connection portion 14 is provided on the outer peripheral portion of the water collection main body portion 11 so that the filtrate extraction portion 24 of the membrane element 2 is inserted and connected via a connection member 25. . A connection hole 15 is formed in the connection part 14 as a first connection hole into which the filtrate extraction part 24 of the membrane element 2 is fitted. And this connection part 14 will be in the state which protruded from the outer peripheral part of the water collection main-body part 11 by the moderate length by which the filtrate extraction part 24 of the membrane element 2 is connected liquid-tight with respect to the water-collection main body part 11. ing.

  Further, also in the insertion portion 12, a connection hole 16 is formed as a second connection hole into which the filtrate outlet portion 24 of another membrane element 2 arranged in parallel with the one membrane element 2 is inserted and connected. . The connection hole 16 of the insertion portion 12 communicates with the connection hole 15 of the water collection main body 11 of the other unit water collection unit 10 when the unit water collection unit 10 is connected in series with the other unit water collection unit 10. Formed as follows.

  As shown in FIG. 1, the water collecting unit 1 described above has a cross section of the unit water collecting unit 10 so that the mounting direction (angle) of the membrane element 2 with respect to the unit water collecting unit 10 can be easily aligned in one direction. The shape is a substantially square shape, but may be a substantially polygonal shape other than the substantially square shape. In addition, when the shape of the cross section is circular, if marks such as protrusions and cuts are provided on the outer peripheral portion of the insertion portion 12 of the unit water collecting portion 10 and the inner peripheral portion of the water collecting main body portion 11 which will be described later. , Positioning of the unit water collecting section 10 is ensured.

(Configuration example of membrane element 2)
As shown in FIG. 2, the membrane element 2 includes a filtration main body 21 that is subjected to solid-liquid separation, and a header 22 that collects treated water for solid-liquid separation from one end of the filtration main body 21. And a footer 23 for sealing the other end of the filtration main body 21 in a liquid-tight manner.

  The filtration main body 21 is composed of a flat filter member. Inside the filter member, a flow passage or a flow gap is formed as a space for flowing the filtered water obtained by solid-liquid separation. Specific examples of the filtering member include those in which a filtration membrane is formed on a water-permeable flat plate-like support. However, the filtering member is not limited to a specific mode as long as it has a filtering function.

  As a constituent material of the filtration main body 21, header 22, and footer 23, known inorganic materials exemplified by metals, ceramics and the like applied to solid-liquid separation technology, and known organic materials exemplified by polymer resins, etc. Is mentioned. If the constituent material has such a strength that it is not damaged by the gas-liquid mixed flow for cleaning the filtration main body 21 when the filtration main body 21, header 22 and footer 23 are incorporated as a membrane separator. Since it is good, it does not specifically limit.

  The header 22 and the footer 23 are fixed in a liquid-tight manner to one end and the other end of the filtration main body 21 by, for example, bonding, welding, or molding.

  At the upper end of the header 22, a filtered water extraction part 24 connected to the water collecting part 1 is provided. As the constituent material of the filtered water extraction part 24, the same constituent material as the filtration main body part 21, the header 22, and the footer 23 is applied. As the filtered water extraction part 24, a cylindrical form is mentioned, but a polygonal form exemplified by a triangle or a quadrilateral whose cross section is not circular may be applied.

  As another aspect of the membrane element 2, a frame made of the inorganic material or the organic material provided at the peripheral portion of the filtration main body 21, and a filtered water extraction portion provided integrally with one end surface of the frame 24 may be adopted.

  As shown in FIG. 3, a cylindrical connection member 25 that is fitted into the connection portion 14 of the water collection main body portion 11 is attached to the filtered water extraction portion 24. The connection member 25 is made of the same material as that of the water collecting portion 1.

  A water-stopping member (not shown) is attached to the inner peripheral surface of the connecting member 25 to ensure liquid-tightness with the filtered water outlet 24. Further, a water stop member 26 that seals between the connection member 25 and the water collecting portion 1 in a liquid-tight manner is further mounted on the outer peripheral surface of the connection member 25. The water stop member 26 may be a known elastic member exemplified by an O-ring or the like employed in water treatment technology.

(Assembly procedure example)
The assembly procedure of the water collecting unit 1 will be described with reference to FIGS.

  First, the same number of unit water collecting units 10 as the membrane elements 2 used in the membrane separator are prepared. Subsequently, the insertion part 12 of the other unit water collection part 10 is inserted in the insertion groove 13 of one unit water collection part 10 shown by Fig.1 (a) (b). Subsequently, the insertion part 12 of the other unit water collecting part 10 is further inserted into the insertion groove 13 of the other unit water collecting part 10. By repeating the above operation, the same number of unit water collecting units 10 are connected in series, whereby the water collecting unit 1 is assembled.

  In the water collecting section 1 shown in FIG. 2C, at least six unit water collecting sections 10 are connected in series. Moreover, the connection hole 16 in the insertion part 12 of one unit water collection part 10 among the adjacent unit water collection parts 10 is the state connected with the connection hole 15 in the water collection main-body part 11 of the other unit water collection part 10. It has become. Furthermore, the insertion part 12 of the one unit water collecting part 10 and the insertion groove 13 of the other water collecting main body part 11 are in a state of being bonded with liquid tightness secured by an adhesive. Any adhesive may be used as long as it can adhere the material of the water collecting portion 1.

  Moreover, when sealing the unit water collection part 10 of the both ends or one end of the water collection part 1, it fits with either the insertion part 12 or the insertion groove 13 of the unit water collection part 10, and the opening part of the said both ends or one end is made. A sealing member (not shown) that can be sealed in a liquid-tight manner is attached to the unit water collecting portion 10.

  And this water collection part 1 is installed in the frame of the membrane separation apparatus abbreviate | omitted illustration. Next, as shown in FIGS. 3 (a) and 3 (b), the filtrate extraction part 24 of the membrane element 2 is inserted and connected to the connection holes 15 and 16 of the individual unit water collection parts 10 via the connection members 25. The As described above, the plurality of membrane elements 2 are arranged in parallel in the frame of the membrane separation apparatus.

(Effect of this embodiment)
According to the water collection part 1 of this embodiment as described above, the filtered water extraction part 24 of the membrane element 2 can be directly inserted and connected to the unit water collection part 10, so that a conventional connection tube is not used. The membrane element 2 can be detachably connected to the water collecting portion 1.

  Further, since the water collecting section 1 is formed by connecting an arbitrary number of unit water collecting sections 10 in series, it can be expanded and assembled according to the number of membrane elements 2.

  Furthermore, since the cross section of the unit water collection part 10 of the water collection part 1 is formed in the polygon, when connecting the unit water collection part 10, the mistake of the connection direction of the adjacent unit water collection part 10 is avoided. The connection holes 15 and 16 of both the unit water collecting portions 10 can easily communicate with each other. Therefore, the assembly workability of the water collecting unit 1 is improved.

  And the insertion part 12 of the water collecting main body part of the other unit water collecting part 10 is inserted into the insertion groove 13 of the water collecting main body part 11 of one unit water collecting part 10 among the adjacent unit water collecting parts 10. Thereby, the unit water collecting part 10 is connected in series. Therefore, the restriction on the connection interval of the membrane element 2 to the water collecting portion 1 due to the connecting structure of the unit water collecting portions 10 is eliminated. Therefore, the restriction on the number of membrane elements 2 installed in the membrane separation apparatus is also eliminated, and the throughput of the membrane separation apparatus can be improved.

  Further, a connecting member 25 is attached to the filtered water outlet portion 24 of the membrane element 2, and the connecting member 25 is liquid-tightly connected between the connecting member 25 and the connecting hole 15 of the unit water collecting portion 10. A waterproofing member 26 for sealing is further mounted. Therefore, the liquid-tightness of the connection part of the membrane element 2 and the water collection part 1 is ensured.

  In addition, if the water stop member 26 is directly attached to the filtrate extraction part 24 of the membrane element 2 as shown in FIG. 4, the connection member 25 becomes unnecessary, the number of parts of the membrane separation device is reduced, and the membrane The initial cost and maintenance cost of the separation device can be reduced.

[Embodiment 2]
In the unit water collecting portion 10 of Embodiment 2 of the present invention shown in FIG. 5, the connection portion 14 and the connection holes 15 and 16 are symmetrically arranged and formed with the axial direction a of the unit water collecting portion 10 as the axis of symmetry. It is the same aspect as the water collection part 1 of Embodiment 1 except having.

  According to the water collecting unit 1 formed by connecting a plurality of unit water collecting units 10 of the present embodiment, the pair of membrane elements 2 are attached to the unit water collecting unit 10, and thus the effect of the first embodiment. In addition, the number of membrane elements 2 attached to the water collecting portion 1 increases. Therefore, the amount of treated water in the membrane separator can be increased.

[Embodiment 3]
Further, in the water collection structure illustrated in FIG. 6A, the filtered water outlet 24 provided on both the header 22 and the footer 23 of the membrane element 2 is connected to the unit water collection unit 10 of the first embodiment. It is an aspect. According to this aspect, in addition to the effect of the water collecting unit 1 of the first embodiment, it is possible to increase the discharge flow rate of filtered water out of the system.

  Furthermore, in the water collection structure illustrated in FIG. 6B, the filtered water extraction unit 24 provided in both the header 22 and the footer 23 of the membrane element 2 is connected to the unit water collection unit 10 of the second embodiment. It is an aspect. According to this aspect, in addition to the effect of the water collecting unit 1 of the second embodiment, it is possible to increase the discharge flow rate outside the filtered water system.

[Other Embodiments]
The present invention is not limited to the above embodiments, and can be implemented in various modes within the scope of the claims of the present invention.

  For example, according to the number of membrane elements required in the membrane separation apparatus, a water collecting portion capable of connecting a plurality of membrane elements can be used as a unit component as a unit component that can be combined.

  Further, the connecting portion 14 of the membrane element 2 in the water collecting portion 1 of the first to third embodiments protrudes from the outer peripheral portion of the water collecting main body portion 11 in order to secure the insertion length in order to connect the membrane element in a liquid-tight manner. It has been installed. Since the filtrate extraction part 24 of the membrane element 2 should just be able to connect liquid-tightly in the water collection part 1, if the insertion length of the filtration water extraction part 24 can be ensured appropriately, it will not be limited to the aspect of Embodiment 1. . Therefore, for example, the connection portion 14 may be protruded from the inner surface portion of the water collection main body portion 11. Or it is good also as an aspect which made the side wall part of the water collection main-body part 11 thick.

  Furthermore, although the unit water collection part 10 of Embodiment 1-3 is an aspect which has the insertion part 12 and the insertion groove | channel 13, it is good also as an aspect which has only the insertion part 12. FIG. In this case, for example, an insertion receiving portion that fits with the insertion portion 12 of another unit water collection portion 10 is formed on the inner peripheral portion of the water collection main body portion 11. And according to the water collection part 1 which has the unit water collection part 10 provided with the water collection main-body part 11 of this aspect, it is clear that the effect similar to the water collection part 1 of Embodiment 1-3 is acquired. is there. In particular, since the water collection main body 11 of this embodiment is not formed with the insertion groove 13, the manufacturing cost of the water collection unit 1 can be reduced.

DESCRIPTION OF SYMBOLS 1 ... Water collection part 2 ... Membrane element, 21 ... Filtration body part, 22 ... Header, 23 ... Footer, 24 ... Filtrated water extraction part 10 ... Unit water collection part, 11 ... Water collection body part, 12 ... Insertion part, 13 ... Insertion groove, 14 ... Connection part, 15 ... Connection hole (first connection hole), 16 ... Connection hole (second connection hole)
a ... Axial direction of the unit water collecting section 10

Claims (9)

A filtered water collection structure obtained by solid-liquid separation,
Having a unit water collecting part to which filtrated water extraction part of a membrane element to be subjected to solid-liquid separation is connected and filtrated water is introduced from the membrane element;
This unit water collecting part can be connected in series with the other unit water collecting parts. The unit water collecting section is
A water collection main body for circulating the filtered water;
The water collection structure according to claim 1, further comprising an insertion portion that is inserted into a water collection main body portion of the other unit water collection portion. The water collecting structure according to claim 2, wherein an insertion groove into which the insertion portion of the other unit water collecting portion is further inserted is formed in the peripheral wall portion of the water collecting main body portion. The water collecting structure according to claim 2, wherein an insertion receiving portion that fits into an insertion portion of the other unit water collecting portion is formed on the peripheral wall portion of the water collecting main body portion. The water collection main body portion includes a connection portion formed with a first connection hole into which the filtrate extraction portion of the membrane element is fitted,
A second connection that communicates with the first connection hole of the connection portion of the other unit water collection unit when the unit water collection unit is connected in series to the other unit water collection unit. The water collecting structure according to any one of claims 2 to 4, wherein a hole is formed. A connection member fitted into the connection portion is attached to the filtered water extraction portion,
The water collecting structure according to claim 5, further comprising a water stop member attached to the connecting member for liquid-tight sealing between the connecting member and the connecting portion. The water collecting structure according to claim 5, wherein a water stop member that seals a liquid-tight seal between the filtered water outlet and the connection portion is further attached to the filtered water outlet.   The said connection part and said 1st and 2nd connection hole are arrange | positioned symmetrically by setting the axial direction of the said water collection main-body part as a symmetry axis, The any one of Claim 5 to 7 characterized by the above-mentioned. The water collection structure described in 1. The water collecting structure according to any one of claims 2 to 8, wherein the water collecting main body portion is formed of a cylindrical body having a polygonal cross section.

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