JP2009113042A - Header components and its connection structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a header components and its connection structure with good work efficiency in extension of filtration membrane modules, composing a header with an inexpensive material such as resin. <P>SOLUTION: In the header components 6 of the filtration membrane module 2 with a main pipe 8 in communication with branch pipes 7 respectively connected to juxtaposed multiple filtration membrane modules 2, split into a plurality of pieces, a large diameter part 8a is formed at one end of the main pipe 8, a small diameter part 8b is formed at the other end of the main pipe 8, the small diameter part 8b formed in the main pipe 8 of the other header components 6 is fit to the large diameter part 8a formed in the main pipe 8 of the header components 6 to connect each main pipe 8. At least a part of an outer periphery of the main pipe 8 is formed rectangularly, and an air introducing port 7a having an orifice hole 7a1 for air bubbling is integrally formed at a part of the branch pipe 7. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a header part of a filtration membrane module in which a main pipe communicating with a branch pipe connected to each of a plurality of filtration membrane modules arranged in parallel is divided into a plurality of parts, and a connection structure thereof.

  In filtration devices that use river water, lake water, groundwater, seawater, etc. as raw solutions for microfiltration and water treatment that purifies in large quantities using an ultrafiltration device, a plurality of filtration membrane modules are connected in parallel to a main pipe called a header. Are arranged.

  The header is provided with a branch pipe branched at a predetermined position of a long stainless steel pipe, and a filtration membrane module is erected and connected to the branch pipe.

International Publication No. 99/55447 Japanese Patent Laid-Open No. 10-180050 Japanese Patent Laid-Open No. 10-225625 International Publication No. 00/18498 Japanese Patent Laid-Open No. 11-239719

  However, in the above-mentioned conventional example, when adding a filtration membrane module, it is necessary to replace the header. Therefore, after each removal of the filtration membrane module from the header to be removed, it is extended by the amount of the additional filtration membrane module. There is a problem that workability is poor because it is necessary to attach the previously removed filtration membrane module to the new header.

  Further, when seawater is handled as raw water, it is necessary to manufacture a header with an expensive material such as a stainless steel pipe having a two-phase structure such as SUS329J4 or a stainless steel pipe such as SUS354N in order to ensure durability.

  On the other hand, resins such as PVC (polyvinyl chloride) and ABS (acrylic, butadiene, styrene copolymers or blends thereof) are also resistant to seawater, but a long main pipe is provided with a plurality of branch pipes. Despite being difficult to connect, durable against seawater, and inexpensive, it is currently impossible to use resin as a header.

  The present invention solves the above-mentioned problems, and the object of the present invention is to improve the workability when adding a membrane filter module, and to make a header part that can constitute a header with an inexpensive material such as a resin, and The connection structure is intended to be provided.

A header component according to the present invention for achieving the above object is a header component of a filtration membrane module in which a main pipe communicating with a branch pipe connected to each of a plurality of filtration membrane modules arranged side by side is divided into a plurality. A large diameter portion is formed at one end of the main pipe of the header component, and a small diameter portion is formed at the other end of the main pipe. The main pipes can be connected to each other by inserting a small-diameter portion formed in the main pipe, and at least a part of the outer periphery of the main pipe is formed in a rectangular shape, and an orifice hole for air bubbling is formed in a part of the branch pipe and wherein the integrally molded air inlet with.

Also, a feature in that a indicator for alignment on the end portion outer peripheral portion of the flange portion provided at the base end outer peripheral portion and a small diameter portion formed in the main pipe of large diameter portion formed in the main pipe To do .

  The header part connection structure according to the present invention is a header part connection structure for connecting the header part and the filtration membrane module described above, and the branch pipe of the header part and the filtration membrane module are connected to each other in a predetermined manner. It is characterized by being connected by flexible joint means that can be connected flexibly with a degree.

  Since the present invention has the above-described configuration and operation, the small diameter part formed in the main pipe of the other header part is inserted into the large diameter part formed in the main pipe of the header part to connect the main pipes to each other. Since multiple header parts can be connected, it is possible to connect and add header parts according to the number of filtration membrane modules to be added, and it is only necessary to attach filtration membrane modules as much as the added header parts. Good sex.

  Thereby, it is possible to connect and add header parts in accordance with the number of additional filtration membrane modules, and workability is improved because it is only necessary to attach the filtration membrane modules as much as the added header parts.

  Further, since a branch pipe can be provided for each of the header parts divided into a plurality of parts, the header can be made of an inexpensive material by integrally molding resin or the like.

  In addition, since the air inlet having an orifice hole for air bubbling is integrally formed in a part of the branch pipe, there is no need to separately prepare parts such as an orifice for air bubbling, and the number of parts can be reduced and assembled. Costs can be reduced by reducing man-hours.

  In addition, if an alignment index is provided on the outer periphery of the end of the large diameter portion formed on the main pipe and the outer periphery of the end of the flange portion provided at the base of the small diameter portion formed on the main pipe, It is easy to align the header parts in the circumferential direction, and it is possible to easily and reliably align the filtration membrane module that is erected and connected to the branch pipe.

  Further, according to the connection structure of the header part according to the present invention, the branch pipe of the header part and the filtration membrane module can be flexibly connected with a predetermined degree of freedom by the flexible joint means. The position of the filtration membrane module that is erected and connected can be easily adjusted, and even if it is a resin header part, there is no possibility of breakage.

It is the front view and side view which show the structure of the filtration membrane module connected by connecting the header components which concern on this invention. It is the front view and side view which show the structure of the filtration membrane module connected by connecting the header components which concern on this invention. (A), (b) is sectional explanatory drawing and side surface explanatory drawing which show the structure of 1st Embodiment of header components. It is sectional explanatory drawing which shows a mode that the header component of 1st Embodiment was connected. It is decomposition | disassembly explanatory drawing which shows the structure of a flexible joint means. It is decomposition | disassembly explanatory drawing which shows the other structure of a flexible joint means. (A), (b) is sectional explanatory drawing and side surface explanatory drawing which show the structure of 2nd Embodiment of the header component based on this invention. It is sectional explanatory drawing which shows a mode that the header component of 2nd Embodiment was connected.

An embodiment of a header component and its connection structure according to the present invention will be specifically described with reference to the drawings. 1 and 2 are a front view and a side view showing a structure of a filtration membrane module connected by connecting header part according to the present invention, FIG. 3 (a), (b) is the first embodiment of the header part FIG. 4 is a sectional explanatory view showing a state in which the header parts of the first embodiment are connected, and FIGS. 5 and 6 are exploded explanatory views showing the configurations of various flexible joint means. .

  1st Embodiment of the header component which concerns on this invention, and its connection structure is described using FIGS. 1 and 2, reference numeral 1 denotes a cross-flow type filtration device that performs filtration while circulating a stock solution, and is equipped with a filtration membrane module 2 that is appropriately adapted for microfiltration or ultrafiltration according to filtration accuracy. The

  In addition, although this embodiment demonstrates an example at the time of applying the header components based on this invention to the crossflow type | mold filtration apparatus which filters while circulating a stock solution, as another structure, without circulating a stock solution. The header component according to the present invention can also be applied to an all-filtration type filtration device that filters all the supplied stock solution through a filtration membrane.

  3 is a stock supply header for supplying the stock solution to the filtration membrane module 2, 4 is a filtrate discharge header for discharging the filtrate filtered by the filtration membrane module 2, and 5 is a stock return header for discharging the return stock solution. is there.

  Each of the stock solution supply header 3, the filtrate discharge header 4, and the stock solution return header 5 has a number of header parts 6 shown in FIG. 3 corresponding to the number of the plurality of filtration membrane modules 2 arranged in parallel, and is sequentially connected. It has been done.

As shown in FIGS. 3 and 4 , the header component 6 includes a main pipe 8 that communicates with branch pipes 7 respectively connected to the raw liquid supply flow path, the filtrate discharge flow path, and the raw liquid return flow path of the filtration membrane module 2. The main pipe 8 has a large-diameter portion 8a formed at one end thereof, and the main pipe 8 has a small-diameter portion 8b formed at the other end thereof.

  The diameter of the inner peripheral surface 8a1 of the large-diameter portion 8a is set to be slightly larger than the diameter of the outer peripheral surface 8b1 of the small-diameter portion 8b, and the other large diameter portion 8a of the main pipe 8 of one header component 6 By inserting the small diameter portion 8b of the main pipe 8 of the header part 6, the main pipes 8 are connected to each other.

In the present embodiment , the adhesive 10 is interposed between the inner peripheral surface 8a1 of the large diameter portion 8a of the main pipe 8 of one header component 6 and the outer peripheral surface 8b1 of the small diameter portion 8b of the main pipe 8 of the other header component 6. By connecting them together, they are connected in a state of maintaining watertightness and airtightness.

The outer peripheral shape of the main pipe 8 of the header part 6 of the present embodiment is formed in a square shape, and each stock solution supply header 3 in which the header part 6 is connected to the leg base 32a and the arm base 32b of the support housing 32, the filtrate discharge The header 4 and the stock solution return header 5 can be stably placed and fixed.

In this embodiment , the inner peripheral surface 8a1 of the large-diameter portion 8a of the main pipe 8 of the header component 6 and the outer peripheral surface 8b1 of the small-diameter portion 8b are constituted by flat circumferential surfaces. It is also possible to form a screw portion on the inner peripheral surface 8a1 of the large diameter portion 8a and the outer peripheral surface 8b1 of the small diameter portion 8b and connect them by screwing with a seal tape or the like interposed therebetween.

  An air introduction port 7 a having an orifice hole 7 a 1 for air bubbling is integrally formed on a part of the branch pipe 7 of the header part 6. Ribs 9 and 9 a are integrally formed between the outer peripheral surface of the branch pipe 7 and the outer peripheral surface of the main pipe 8, and the end outer peripheral portion of the large-diameter portion 8 a formed in the main pipe 8 and the main pipe 8 An alignment index is provided on the outer peripheral portion of the end portion of the flange portion 8c provided at the base of the formed small diameter portion 8b.

In the present embodiment , the rib 9a also serves as an indicator provided on the outer peripheral portion of the end of the flange portion 8c provided at the base of the small diameter portion 8b formed in the main pipe 8, and the large diameter portion 8a formed in the main pipe 8 is used. A protrusion 8d serving as an index is integrally formed on the outer peripheral portion of the end portion.

  And as shown in FIG. 4, the small diameter part 8b formed in the main pipe 8 of the other header components 6 is inserted in the large diameter part 8a formed in the main pipe 8 of the header part 6, and the main pipes 8 are connected to each other. When the rib 9a and the protrusion 8d are aligned, the adjacent header components 6 can be easily aligned in the circumferential direction. Positioning can be done easily and reliably.

  The header parts 6 are PE (Poly Ethylene), PP (Poly Propylene), PVC (Poly Vinyl Chloride), PA (Polyamide), POM (Poly Oxymethylene), polysulfone. , PES (Poly Ether Sulfones), PTFE (Poly-tetrafluoroethylene), FRP (Fiber Reinforced Plastics), PEEK (Poly Ether Ether Ketone)・ Ether ketone, or composite material of PVC (polyvinyl chloride) and FRP (fiber reinforced plastic), composite material of PE (polyethylene) and FRP (fiber reinforced plastic), PP (polypropylene) and FRP (fiber reinforced) Plastics and other composite materials It can be created integrally by extrusion molding or vacuum molding.

  For example, when the header part 6 is made of PA (polyamide resin), the wear resistance is excellent. Abrasion resistance can be increased by adding molybdenum disulfide, graphite, polyethylene powder, or polytetrafluoroethylene powder. Further, by adding oil to various oil-resistant resins, the wear resistance is several times to 10 times or more that of oil-free plastics. In addition, it is hard to be attacked by hydrocarbon solvents and has particularly strong resistance to gasoline and lubricating oil. The alloy special nylon / PO (polyolefin) alloy improves the heat resistance of PO (polyolefin) in addition to the oil resistance.

  Moreover, when the header part 6 is manufactured by POM (polyacetal), it is excellent in fatigue resistance, particularly against repeated impacts. The creep property is also at a sufficiently high level for practical use, is a highly reliable component material, and has excellent moldability. The creep property is a property in which a temporal element is added to the two properties of strength and stiffness, and exhibits excellent shape stability under various temperature and load conditions over a long period of time. In addition, the resistance to repetitive stress is high, and the material is less likely to break due to fatigue. In addition, it is highly resistant to organic chemicals, oils and fats and synthetic detergents, and is hardly affected. Although there are problems with strong acids and strong alkalis, copolymers have relatively good alkali resistance. In addition, since polyacetal causes hydrolysis, its hot water resistance is not good.

  Further, when the header part 6 is made of polysulfone, the natural color is light amber and transparent, and exhibits an aesthetic appearance. Good workability, easy coloring and filling, and metal plating. It is amorphous and has very little molding shrinkage, low warpage, high dimensional accuracy, and suitable for precision molding. Strong and excellent mechanical properties. Excellent electrical properties over a wide range. Good dimensional stability and creep resistance. It is a material with extremely high heat resistance (combustion test; UL continuous use temperature 15). Excellent hot water resistance to withstand heated steam and boiling water. It is an excellent flame retardant (UL94V-0 to V-2) material.

  Polysulfone undergoes very little change in physical properties due to water, and does not whiten or hydrolyze with hot water or heated steam. High safety, approved by Ministry of Health and Welfare No. 434, 178, other US FDA, NSF, 3-ASSC, and US pharmacy law standards, and many food related and medical device related Used. Withstands many chemicals without being attacked by acids and alkalis. It withstands repeated use in pressurized steam at 132 ° C, which is an autoclave condition.

  Further, when the header part 6 is manufactured by PES (polyethersulfone), it is excellent in reliability with respect to a rapid temperature change and reliability over a long period of time at a high temperature. In terms of heat resistance, H.H. D. T.A. (Heat deformation temperature) is 200 ° C. to 210 ° C., and the rigidity hardly decreases to nearly 200 ° C. Moreover, it has solder resistance. As long-term heat resistance, UL temperature index (heat aging property) is 180 ° C., and the half life of tensile strength at 180 ° C. is 20 years. Even at 200 ° C., there is almost no dimensional change and excellent dimensional stability. Sufficient creep resistance even at 180 ° C. It has excellent electrical characteristics and the characteristics are maintained up to a high temperature range. The flame resistance is UL-94V-0 even at a thickness of 0.5 mm. In addition, the generation of smoke is slight during combustion. Despite its excellent heat resistance, it can be molded sufficiently with ordinary molding machines.

  Incidentally, natural PES (polyethersulfone) is not so good in weather resistance, so it is necessary to add carbon black for outdoor use. Although the water resistance is good, it is slightly water-absorbing and needs to be dried before molding. Since the notch dependence of impact strength is large, a design that avoids sharp notches is necessary.

  In addition, PES (polyethersulfone) has excellent resistance to aqueous chemicals such as hot water, steam, acid, and alkali, as well as oils, grease, gasoline, alcohols, aliphatic hydrocarbons, and the like. It is also resistant to oxidizing agents, and no change is observed even if it is left at 150 ° C. for one month in a 100% oxygen atmosphere. However, as with most organic compounds, it is attacked by concentrated sulfuric acid and concentrated nitric acid. On the other hand, since PES (polyethersulfone) is amorphous, it may be attacked by strong polar solvents such as esters, ketones, and trichlorethylene. The chemical resistance varies slightly depending on the brand of PES (polyethersulfone), and the GF (glass fiber) reinforced brand is considerably superior to the natural brand. Moreover, chemical resistance can be improved by annealing at 200 ° C.

  Further, when the header part 6 is made of PTFE (polytetrafluoroethylene) which is a fluororesin, the continuous maximum use temperature is extremely high and non-combustion. Excellent low temperature characteristics, chemical resistance, and electrical characteristics. Non-adhesive and flexible resin with excellent mechanical properties. Low friction characteristics with the lowest friction coefficient in solids. Excellent weather resistance. It is extremely inert to organic and inorganic chemicals. In particular, PTFE (polytetrafluoroethylene), PFA (Perfluoroalkoxyethylene), and FEP (Fluoro Ethylene Propylene) have a structure in which F surrounds the C—C bond without a gap. Moreover, since the C—F bond energy is as high as 107 kcal / mol, resistance to chemicals is extremely excellent. Compared to these resins, PCTFE (Poly Chloro Tri Fluoro Ethylene), ETFE (Ethylene tetrafluoroethylene), ECTFE (Ethylene and Chlorotrifluoroethylene; Ethylene) Chlorotrifluoroethylene copolymer), PVDF (Poly Vinylidene Fluoride), etc. are somewhat inferior.

  Further, the header component 6 may be integrally formed of a stainless material or the like by die molding or the like.

  When the branch pipe 7 of the header component 6 and the filtration membrane module 2 are connected, they are connected by flexible joint means 11 and 21 that can be flexibly connected with a predetermined degree of freedom as shown in FIG. 5 or FIG. .

  FIG. 5 shows flexible joint means 11 for connecting the filtration membrane module 2 to the branch pipe 7 of the header part 6 constituting the stock solution supply header 3. FIG. 6 shows the header parts constituting the filtrate discharge header 4 and the stock solution return header 5. This is a flexible joint means 21 for connecting the filtration membrane module 2 to the six branch pipes 7.

  The flexible joint means 11 shown in FIG. 5 includes a pair of housings 12, 13 and a rubber ring 16 having a U-shaped cross section interposed between the branch pipe 7 to be connected and the stock solution supply pipe 14 of the filtration membrane module 2. It is comprised.

  On the outer peripheral surface of the branch pipe 7 of the header part 6 and the end of the stock solution supply pipe 14 are formed recesses 7b, 14a that can be engaged with tapered surfaces 17 provided on the inner peripheral sides of the housings 12, 13. The branch pipe 7 and the stock solution supply pipe 14 are fitted into the rubber ring 16, and the flanges of the housings 12 and 13 are engaged with the tapered surfaces 17 of the housings 12 and 13 engaged with the recesses 7 b and 14 a of the branch pipe 7 and the stock solution supply pipe 14. The bolts 18 are inserted into the bolt holes 12b, 13b provided in the portions 12a, 13a, and the nuts 19 are screwed into the bolts 18 to be fastened. The branch pipe 7 and the stock solution are moved in a state in which the recesses 7b and 14a of the stock solution supply pipe 14 are moved closer to each other and the ribs 16a protruding from the inner wall surfaces of both ends of the rubber ring 16 are pressed against the peripheral surfaces of the end portions of the tubes 7 and 14 The supply pipe 14 is connected in a watertight and airtight manner via the rubber ring 16.

  The bolt 18 has a hexagonal locking portion 18b for rotation prevention formed in two stages inside a hexagonal head portion 18a for tightening, and a short bolt hole 13b made of a long hole formed in the flange portion 13a of the housing 13. The hexagonal locking portion 18b is fitted and locked to the radial side to prevent the rotation of the bolt 18 and prevent the bolt 18 from rotating together when the nut 19 is fastened to the bolt 18.

  In addition, instead of the recesses 7b and 14a formed on the outer peripheral surfaces of the branch pipe 7 and the stock solution supply pipe 14, convex portions that can be engaged with the tapered surfaces 17 of the housings 12 and 13 are provided on the outer peripheral surface of the branch pipe 7 and the stock solution supply pipe 14. With the rubber ring 16 interposed between the bolt holes 12b and 13b provided in the flange portions 12a and 13a of the housings 12 and 13 with the tapered surfaces 17 engaged with the convex portions. It is also possible to adopt a configuration in which a nut 19 is screwed onto the bolt 18 to be fastened and connected.

  The branch pipe 7 of the header component 6 constituting the stock solution supply header 3 and the stock solution supply pipe 14 of the filtration membrane module 2 are connected to each other by using the flexible joint means 11 described above. Is allowed to some extent by the rubber ring 16, so that the position of the filtration membrane module 2 can be easily adjusted. Further, as shown in FIGS. 1 and 2, the stock solution supply pipe 14 of the standing filtration membrane module 2 can be connected to the branch pipe 7 and the weight of the filtration membrane module 2 can be supported.

  The flexible joint means 21 shown in FIG. 6 includes a branch pipe 7 of the header component 6 constituting the filtrate discharge header 4 and the stock solution return header 5, and a filtrate discharge pipe 15 and a stock solution return pipe 20 of the membrane filter module 2, respectively. The upper part of the membrane filter module 2 is attached to the header part 6 constituting the filtrate discharge header 4 and the stock solution return header 5 by being fitted and press-contacted to the outer periphery of the filtrate.

  As shown in FIG. 6, the flexible joint means 21 is screwed into the thread grooves 22a and 22b through a cylindrical main body 22 having thread grooves 22a and 22b formed at both ends, a packing 23 and a packing cover 24. It is configured to have a cap nut 25a, 25b to be obtained.

  A flexible joint means 21 comprising a cylindrical body 22, a packing 23, a packing cover 24, and cap nuts 25a, 25b is inserted into the branch pipe 7 of the header part 6, the filtrate discharge pipe 15 and the stock solution return pipe 20 of the membrane filter module 2. The branch pipe 7, the filtrate discharge pipe 15, and the stock solution return pipe 20 are configured to be movable in the axial direction. Incidentally, the outer peripheral surface of the branch pipe 7 of the header part 6 constituting the filtrate discharge header 4 and the stock solution return header 5 is not formed with a recess 7b, but is constituted by a flat circumferential surface.

  Then, the flexible joint means 21 is integrated by lightly screwing the cap nuts 25a, 25b into the thread grooves 22a, 22b of the cylindrical body 22 with the packing 23 and the packing cover 24 interposed in the assembly arrangement sequence shown in FIG. The filtrate discharge pipe 15 and the concentrate return pipe 20 of the filtration membrane module 2 and the branch pipe 7 of the header part 6 in a state of being fitted to one of the branch pipe 7 of the header part 6 or the filtrate discharge pipe 15 and the concentrate return pipe 20 , The flexible joint means 21 is moved in the axial direction on the outer periphery of the branch pipe 7 of the header part 6, the filtrate discharge pipe 15 and the stock solution return pipe 20, and the branch pipe 7 of the header part 6 is moved. The seal cover 24 presses the packing 23 in the inner diameter direction by screwing the cap nuts 25a and 25b into the thread grooves 22a and 22b in accordance with the approximate middle part of the filter discharge pipe 15 and the stock solution return pipe 20. The packing 23 is connected to the branch pipe 7 of the header part 6 and the filtrate discharge pipe 15. Pressed against the outer peripheral surface of the fine stock return pipe 20 is connected and fixed to airtightness and liquid tightness.

  The connection between the branch pipe 7 of the header part 6 constituting the filtrate discharge header 4 and the concentrate return header 5 and the filtrate discharge pipe 15 and the concentrate return pipe 20 of the membrane filter module 2 is made by using the flexible joint means 21 described above. If connected, the bending of the branch pipe 7, the filtrate discharge pipe 15 and the stock solution return pipe 20 is allowed to some extent by the packing 23, so that the position of the filtration membrane module 2 can be easily adjusted.

  According to the above configuration, the small diameter portion 8b formed in the main pipe 8 of the other header part 6 is fitted into the large diameter part 8a formed in the main pipe 8 of the header part 6 to connect the main pipes 8 to each other. The header parts 6 can be connected.

  As a result, the header parts 6 can be connected and expanded according to the number of additional filtration membrane modules 2, and workability is good because the filtration membrane modules 2 need only be attached to the added header parts 6.

  Further, since the branch pipe 7 can be provided for each of the header parts 6 divided into a plurality of parts, the header can be made of an inexpensive material by integrally molding resin or the like.

  In addition, the air inlet 7a having an air bubbling orifice hole 7a1 is integrally formed in a part of the branch pipe 7, so that it is not necessary to separately prepare parts such as an air bubbling orifice and the number of parts is reduced. At the same time, the assembly man-hours can be reduced and the cost can be reduced.

  In addition, an alignment index is provided on the outer peripheral portion of the end portion of the large-diameter portion 8a formed in the main pipe 8 and the outer peripheral portion of the end portion of the flange portion 8c provided at the base of the small-diameter portion 8b formed in the main pipe 8. In this case, the adjacent header parts 6 can be easily aligned in the circumferential direction, and the filtration membrane module 2 that is erected and connected to the branch pipe 7 can be easily and reliably aligned.

  Further, since the flexible pipe means 11 and 21 can flexibly connect the branch pipe 7 of the header part 6 and the filtration membrane module 2 with a predetermined degree of freedom, they are erected and connected to the branch pipe 7. The position of the filtration membrane module 2 can be adjusted easily, and even the resin header part 6 is not damaged.

Next, the configuration of the second embodiment of the header component according to the present invention will be described with reference to FIGS. FIGS. 7A and 7B are a cross-sectional explanatory view and a side explanatory view showing the configuration of the second embodiment of the header part according to the present invention, and FIG. 8 is a cross-sectional view showing a state in which the header parts of the second embodiment are connected. It is explanatory drawing. In addition, what was comprised similarly to the said 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits description.

  In this embodiment, as shown in FIGS. 7 and 8, an air pipe 31 communicating with an air inlet 7a having an orifice hole 7a1 for air bubbling provided in a part of the branch pipe 7 of the header component 6 is a header. The air pipe 31 is integrally formed with a large-diameter portion 31a at one end, a small-diameter portion 31b is formed at the other end, and the air-tube 31 of the header component 6 has a large-diameter portion 31a. The small diameter portion 31b of the air pipe 31 of the header part 6 is inserted and the air pipes 31 are connected to each other.

  Then, an adhesive 10 is interposed between the inner peripheral surface 31a1 of the large diameter portion 31a of the air pipe 31 of one header component 6 and the outer peripheral surface 31b1 of the small diameter portion 31b of the air pipe 31 of the other header component 6. Are connected in a state where airtightness is maintained.

  In this embodiment, when the small diameter portion 8b of the main pipe 8 of the other header component 6 is fitted into the large diameter portion 8a of the main pipe 8 of the header component 6, the air of the other header component 6 is simultaneously inserted into the large diameter portion 31a of the air pipe 31. The small-diameter portion 31b of the pipe 31 is fitted, and the header parts 6 provided adjacent to each other in a state where the main pipe 8 and the air pipe 31 are connected are aligned with each other in the circumferential direction. The membrane membrane module 2 that is erected and connected can be easily and reliably aligned.

In addition, since the air pipe 31 communicating with the air introduction port 7a is integrally formed with the header part 6, it is not necessary to separately prepare an air pipe for air bubbling, thereby reducing the number of parts and the number of assembling steps. Cost can be reduced. Other configurations are the same as those in the first embodiment, and the same effects can be obtained.

As an application example of the present invention, the present invention can be applied to a header part of a filtration membrane module in which a main pipe communicating with a branch pipe connected to each of a plurality of filtration membrane modules arranged in parallel is divided into a plurality of parts, and a connection structure thereof .

DESCRIPTION OF SYMBOLS 1 ... Filtration apparatus 2 ... Filtration membrane module 3 ... Stock solution supply header 4 ... Filtrate discharge header 5 ... Stock solution return header 6 ... Header part 7 ... Branch pipe 7a ... Air inlet
7a1 ... Orifice hole 7b ... Recess 8 ... Main pipe 8a ... Large diameter part
8a1 ... Inner peripheral surface 8b ... Small diameter part
8b1 ... outer peripheral surface 8c ... flange 8d ... projection 9, 9a ... rib
10 ... Adhesive
11 ... Flexible joint means
12, 13 ... Housing
12a, 13a ... Flange
12b, 13b ... Bolt hole
14 ... Stock solution supply pipe
14a ... recess
15 ... Filtrate discharge pipe
16 ... Rubber ring
16a ... rib
17 ... Taper surface
18 ... Bolt
18a ... Hex head
18b ... Hexagon locking part
19 ... Nut
20 ... Stock solution return pipe
21 ... Flexible joint means
22 ... Cylindrical body
22a, 22b ... thread groove
23 ... Packing
24 ... Packing cover
25a, 25b ... Cap nut
31 ... Air tube
31a ... Large diameter part
31a1… Inner peripheral surface
31b ... Small diameter part
31b1… Outer peripheral surface
32 ... Supporting body
32a ... Leg base
32b ... Arm base

Claims (3)

The main part communicating with the branch pipes respectively connected to the plurality of filtration membrane modules arranged in parallel is a header part of the filtration membrane module divided into a plurality of parts,
A large diameter part is formed at one end of the main pipe of the header part, and a small diameter part is formed at the other end of the main pipe, and the main pipe of another header part is formed at the large diameter part formed in the main pipe of the header part. The small diameter part formed in is inserted into each other and the main pipes can be connected,
At least a part of the outer periphery of the main pipe is formed in a square shape ,
A header part, wherein an air inlet having an orifice hole for air bubbling is integrally formed in a part of the branch pipe. An alignment index is provided on the outer peripheral portion of the end portion of the large-diameter portion formed on the main pipe and on the outer peripheral portion of the end portion of the flange portion provided at the base of the small-diameter portion formed on the main pipe. Item 2. The header part according to item 1. A header part connection structure for connecting the header part according to claim 1 or claim 2 and the filtration membrane module,
A header component connection structure characterized in that the branch pipe of the header component and the filtration membrane module are connected by flexible joint means that can be flexibly connected with a predetermined degree of freedom.

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