JP2012183470A - Hanging jig of membrane module, membrane module, and method of using hanging jig of membrane module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hanging jig of a membrane module in which the membrane module group laminated in two or more steps can be integrally transferred without depending on manpower.SOLUTION: The hanging jig 40 of a membrane module 20 used for a membrane separator 10 in which the membrane modules 20 of two or more steps are incorporated to be installed to be laminated in a frame 11, includes: a long base member 41; and two or more engaging parts 42 to freely engage and release to the engagement holes provided to the each membrane module 20 laminated/installed in two or more steps, wherein the each engaging parts 42 is installed in the base member 41 so as to have an interval wider than the laminating interval of the each membrane module 20.

Description

  The present invention relates to a membrane module suspending jig, a membrane module, and a method of using the membrane module suspending jig used in a membrane separation apparatus in which a plurality of stages of membrane modules are stacked and installed in a frame.

  Conventionally, in sewage treatment and wastewater treatment employing a membrane separation activated sludge method, an immersion type membrane separation apparatus has been used for solid-liquid separation.

  Patent Document 1 discloses an immersion-type membrane separation apparatus having a crane-type moving means for moving a membrane module between a biological reaction tank in which the membrane module is immersed and a cleaning tank for cleaning the membrane module. Proposed.

  In the membrane separation apparatus, a washing tank capable of immersing the membrane module on the ground next to the biological reaction tank is provided, and a gate-shaped frame that crosses the biological reaction tank and the washing tank in series is erected on the ground. An electric hoist is movably provided along the upper horizontal beam of the portal frame. A portal frame and an electric hoist serve as moving means for moving the membrane module between the biological reaction tank and the washing tank, and a suspension rope having a hook is attached to the electric hoist.

  According to the crane-type moving means described in Patent Document 1, a membrane separation apparatus in which a plurality of membrane modules are incorporated is integrally suspended without relying on human hands, so that the biological reaction tank and the washing tank are separated from each other. Can be transported.

  In Patent Document 2, a large number of membrane units are arranged in the aeration tank so as to be immersed in the raw water in the aeration tank, and the outlet of the filtrate water pipe of each membrane unit is connected to a suction pipe. A water treatment facility is disclosed in which filtered water is recovered through the suction pipe.

  Then, an automatic detachable joint is interposed between the outlet of the filtrate water pipe and the suction pipe with the outlet of the filtrate water pipe facing downward, and between the aeration tank and the washing tank installed in the vicinity of the aeration tank. A rail for running the hoist is arranged in the upper part of the hoist, and equipped with an automatic locking clamp device for suspending the membrane unit on the hoist, and further for clamping to each membrane unit with the clamp device There has been proposed a membrane unit attaching / detaching transport apparatus to which a suspension piece is attached.

  According to the membrane unit attaching / detaching / conveying device described in Patent Document 2, a plurality of membrane modules accommodated in the membrane separation device can be individually lifted and washed without relying on human hands during operation of the aeration tank. become able to.

JP 09-108548 A Japanese Patent Laid-Open No. 11-309350

  Since the crane-type moving means described in Patent Document 1 is for lifting a membrane separation device together, it cannot selectively lift individual membrane units incorporated in the membrane separation device.

  In the membrane unit attaching / detaching and conveying apparatus disclosed in Patent Document 2, since a plurality of membrane units are arranged in the horizontal direction along the frame so that the filtration membrane is in a vertical posture, any membrane accommodated in the frame Although the unit can be easily lifted, it may be difficult to selectively lift individual membrane units depending on the accommodation posture of the membrane unit.

  For example, in a membrane separation apparatus that employs a structure in which a plurality of membrane units containing a plurality of membrane modules are stacked in a frame, it is difficult to lift only individual membrane modules.

  Membrane separation devices adopting such a structure cannot be manually and collectively housed in a frame with membrane modules stacked in multiple stages, or manually removed from the frame due to their weight. Therefore, it is necessary to carry out an extremely complicated process of manually stacking or removing individual membrane modules one by one.

  Even if the uppermost membrane module is lifted using the above-described hanging rope provided with the conventional hook, it is separated from the lower membrane module, resulting in extremely poor working efficiency.

  In view of the above-described problems, an object of the present invention is to provide a membrane module suspension jig, a membrane module, and a membrane module suspension treatment capable of integrally transferring a group of membrane modules stacked in a plurality of stages without human hands. It is in providing a method of using the tool.

  In order to achieve the above-described object, the first characteristic configuration of the membrane module suspension jig according to the present invention is that a plurality of membrane modules are stacked and installed in a frame as described in claim 1 of the claims. Is a membrane module suspension jig used in a membrane separation apparatus incorporated in this manner, and is freely detachable with respect to a long base member and an engaged portion provided in each of the membrane modules stacked in multiple stages. A plurality of engaging portions, and each engaging portion is attached to the base member so as to have an interval equal to or larger than the stacking interval of the membrane modules.

  According to the above-described configuration, the engaging portions attached to the long base member are individually engaged with the engaged portions provided in the membrane modules stacked in multiple stages, and the base member If the upper end is lifted by a crane device or the like, a plurality of stacked membrane modules can be transferred in a state of being lifted integrally.

  At this time, since each engagement portion is attached to the base member so that the interval is equal to or greater than the stacking interval of each membrane module, each membrane module is individually suspended by each engagement portion. The module can be lifted in a stable posture. Furthermore, since it is sufficient that each engaging portion has a strength sufficient to withstand the weight of a single membrane module, it is possible to configure the engaging portion with an inexpensive material without using an expensive material having a high strength.

  In addition to the first feature configuration described above, the second feature configuration has a length that is a natural number times the stacking interval of each membrane module, in addition to the first feature configuration described above. An interval obtained by adding a length equal to or less than a predetermined allowable length, and the predetermined allowable length is an insertion length of a convex portion formed on the other side into a concave portion formed on one side of an adjacent membrane module. It is a point that is set to.

  When forming a concave part in one of the vertically adjacent membrane modules, forming a convex part in the other, and inserting the convex part into the concave part, the membrane modules are stacked in multiple layers. In addition to accurately positioning the membrane module to be performed, the stacking posture of the membrane module can be stabilized.

  Each engaging part of the hanging jig adds a length equal to or less than a predetermined allowable length to the base member to a length that is a natural number times the stacking interval of each membrane module, for example, 1 time the stacking interval. Since it is attached at intervals, when the membrane module is lifted up, even if the membrane modules adjacent to each other are separated from each other in the state of being lifted up, the insertion state of the concave portion and the convex portion can be maintained, so that the positioning state is maintained. become able to.

  In addition, each engaging portion of the hanging jig has a length that is a natural number times the stacking interval of each membrane module on the base member, for example, a length that is equal to or less than a predetermined allowable length to be twice the stacking interval. If it is the added interval, a two-stage membrane module can be suspended from each engaging portion. That is, since the plurality of stages of membrane modules can be suspended from the engaging portion according to the interval at which the engaging portions are attached, the number of engaging portions provided in the base member can be reduced. By reducing the number of engaging portions, engagement and disengagement work can be reduced, and workability is improved.

  In addition to the first feature configuration described above, the third feature configuration has a length that is a natural number times the stacking interval of each membrane module, in addition to the first feature configuration described above. This is an interval obtained by adding a length longer than a predetermined allowable length, and the predetermined allowable length is the insertion length of the convex portion formed on the other side into the concave portion formed on one side of the adjacent membrane module. It is in the point set to.

  When forming a concave part in one of the vertically adjacent membrane modules, forming a convex part in the other, and inserting the convex part into the concave part, the membrane modules are stacked in multiple layers. In addition to accurately positioning the membrane module to be performed, the stacking posture of the membrane module can be stabilized.

  Each engaging portion of the hanging jig has a length that is a natural number times the stacking interval of each membrane module on the base member, for example, an interval that is longer than a predetermined allowable length to a length that is 1 times the stacking interval. Therefore, when the membrane module is lifted, the fitting state of the concave portion and the convex portion can be released together with the separation of the membrane modules adjacent in the vertical direction. Therefore, in the case where the membrane module is provided with a water collection case for collecting permeated water, and the membrane modules adjacent to each other in the upper and lower sides are fitted in the concave portion and the convex portion, the water collection cases communicate with each other. When suspended outside the tank, the permeated water inside the membrane module is likely to flow out of the membrane module. Furthermore, not only the lowermost stage of the membrane module lifted by the lifting jig, but also, for example, all the membrane modules can be lifted at once, and the membrane module located in the middle stage can be replaced.

  Further, each engaging portion of the hanging jig adds a length that is a natural number times the stacking interval of each membrane module to the base member, for example, a length longer than a predetermined allowable length to a length that is twice the stacking interval. If the distance is within the range, a two-stage membrane module can be suspended from each engaging portion. That is, since the plurality of stages of membrane modules can be suspended from the engaging portion according to the interval at which the engaging portions are attached, the number of engaging portions provided in the base member can be reduced. By reducing the number of engaging portions, engagement and disengagement work can be reduced, and workability is improved.

  In the fourth feature configuration, as described in claim 4, in addition to any of the first to third feature configurations described above, the base member is configured by a belt sling, An engagement ring; and a ring portion that is fitted into the engagement ring at one end and a sling piece that is sewn to the base member at the other end and engaged with the engaged portion, and The engagement ring is fixed to the sewn portion of the sling piece to the base member.

  If a metal wire or chain that is harder than the membrane module is used as the long base member, the base member and the membrane module may rub against each other while being lifted and transferred, resulting in damage such as scratches. However, if a sling is used, the risk of such damage occurring can be greatly reduced. Usually, at least two suspension jigs are used so as to engage with the membrane module in at least two places, but even if the intervals between the engagement portions of the suspension jigs are slightly different, at least in the sling. If there is, the membrane module can be expected to grow somewhat in weight, so that the membrane module can be stably held in a substantially horizontal posture when the membrane module is lifted.

  The belt sling means a fiber string, and a belt sling made of synthetic fibers such as tetron, nylon, and polyester is preferably used.

  For example, after one end of the sling piece formed with the ring portion is inserted into an engagement hole as an engaged portion formed in the membrane module, the ring portion is engaged with the engagement ring fixed to the base member. The suspension jig and each membrane module can be reliably engaged by an extremely simple operation of combining them. In addition, since only the sling piece comes into contact with the engagement hole of the membrane module, the risk of damage such as scratches is reduced.

  The characteristic configuration of the membrane module according to the present invention is a membrane module supported by being suspended by a membrane module suspension jig having any one of the first to fourth characteristic configurations described above. Each membrane module is supported by being suspended by a suspension jig of the membrane module, and each membrane module has an engagement hole as an engaged portion that engages with an engagement portion of the suspension jig at both ends. However, when the membrane modules are stacked, the upper and lower membrane modules are formed so as to contact with the upper and lower adjacent membrane modules, and the upper and lower adjacent membrane modules are in contact with each other. It is in the point comprised so that each engaging part of a hanging jig could be penetrated and engaged.

  Since the engagement holes of the upper and lower membrane modules are in contact with each engagement portion of the suspension jig, the membrane modules are not separated in the vertical direction while being suspended by the suspension jig. Then, it can be transferred while maintaining the stacked posture.

  The characteristic configuration of the method for using the membrane module suspending jig according to the present invention is the use of the membrane module suspending jig having any one of the first to fourth characteristic configurations described above. In the method, the engagement portion of the hanging jig is placed on the engagement portion of the membrane module of a specific stage and the membrane module stacked above the specific stage of the membrane module group laminated in a plurality of stages. An engagement step for engaging, and a membrane module in which the upper end of the suspension jig is lifted and stacked at a position higher than the membrane module at a specific stage are different from the remaining membrane modules in the membrane module group. A dividing step of placing on the table, and removing the membrane module at the specific stage from the suspension jig, lifting the upper end of the suspension jig and taking out the membrane module at the specific stage on the base And including a process Located in.

  The membrane module group at a specific stage engaged with each engaging portion of the suspension jig in the engagement process and the membrane module laminated above the remaining are left in the membrane module group stacked in a plurality of stages in the division process The membrane module group is separated and placed on the base. In this state, the membrane module at the specific stage can be taken out by engaging / disengaging the lowermost engaging portion of the hanging jig and lifting the hanging jig. Thereafter, only the membrane module at the specific stage can be maintained or replaced. Therefore, it becomes possible to easily separate the membrane module at a specific stage from the membrane modules stacked in a plurality of stages without relying on manual work.

  As described above, according to the present invention, a membrane module suspension jig, a membrane module, and a membrane module suspension jig capable of integrally transferring a group of membrane modules stacked in a plurality of stages without human intervention. It is now possible to provide usage instructions.

Illustration of membrane separator Explanatory drawing of membrane separator and membrane module (A) Explanatory drawing of membrane module, (b) Explanatory drawing of connecting member (A) Explanatory drawing of the connection of a membrane module, (b) is the A section enlarged view of (a), Comprising: Explanatory drawing of a connection member and a lower connection part It is explanatory drawing of the hanging jig by this invention, (a) is schematic, (b) is explanatory drawing of an engaging part. It is explanatory drawing of the usage method of a hanging jig, (a) is explanatory drawing of an engagement process, (b) is explanatory drawing of a lifting process. It is explanatory drawing of the usage method of a hanging jig, (a) is explanatory drawing of a division | segmentation process, (b) is explanatory drawing of an extraction process. (A) is explanatory drawing of the engaging part of the hanging jig by another embodiment, (b) is explanatory drawing of the usage method of the hanging jig by another embodiment. It is explanatory drawing of the usage method of the hanging jig by another embodiment, (a) is explanatory drawing of an engagement process, (b) is explanatory drawing of a lifting process. It is explanatory drawing of the usage method of the hanging jig by another embodiment, (a) is explanatory drawing of a division | segmentation process, (b) is explanatory drawing of an extraction process. (A) is explanatory drawing of the usage method of the hanging jig by another embodiment, (b) is explanatory drawing of the usage method of the hanging jig by another embodiment.

  Hereinafter, a membrane module suspension jig, a membrane module, and a method of using the membrane module suspension jig according to the present invention will be described.

  As shown in FIGS. 1 and 2, the membrane separation apparatus 10 is incorporated in the main body frame 11 so that a membrane module group in which membrane modules 20 are vertically stacked and stacked in eight stages is arranged side by side in five rows. And is immersed in the liquid to be treated in the membrane separation tank.

  A diffuser air supply pipe 12 is installed below the lowermost membrane module 20, and the diffused air supplied from the diffuser air supply pipe 12 is juxtaposed in the horizontal direction in a vertical position on each membrane module 20. A cross-flow flow of the liquid to be treated in the membrane separation tank is generated between the plurality of membrane elements 21, and the permeated water that has permeated the membrane surface of each membrane element 21 is led out of the tank through the water collection pipe 13.

  The water collecting pipe 13 communicates with a permeated water outlet pipe (not shown) that reaches a treated water tank installed outside the membrane separation tank, and a pump device is interposed in the middle of the pipe line. An air supply source such as a blower or a compressor communicates with the air supply pipe 12 for air diffusion.

  As shown in FIG. 3A, each membrane module 20 includes a pair of front and rear water collecting cases 22 at both ends in the depth direction of the main body frame 11, and a pair of water collecting cases 22 disposed between the pair of water collecting cases 22. In the space defined by the side plate 23, a plurality of membrane elements 21 are arranged in parallel in a vertical posture in the horizontal direction.

  The membrane element 21 is configured such that filtration membranes are arranged on both sides of a flat filter plate, and treated water that has passed through the filtration membrane is guided into each water collection case 22 through a water collection channel formed in the filter plate. Has been. The filter plate is formed of an ABS resin or the like, and the filter membrane is obtained by impregnating a porous resin into a nonwoven fabric serving as a base material. The water collection case 22 is made of polypropylene or the like so as to have translucency so that the inside of the water collection case 22 can be easily confirmed.

  Each water collecting case 22 is formed in a hollow shape having a water collecting space therein, and connecting portions 25 and 26 communicating with the water collecting space are formed on upper and lower surfaces, respectively.

  The upper connecting portion 25 is configured to be attached with a connecting member 30 fitted into a lower connecting portion 26 formed in the water collecting case 22 of the membrane module 20 stacked immediately above.

  As shown in FIG. 3 (b), the connecting member 30 is formed with a base portion 32 fitted to the fitting claw of the upper connecting portion 25 on one end side of the cylindrical portion 31 and an O-ring 33 on the other end side. Installed and configured.

  The cylindrical portion 31 and the base portion 32 are integrally formed of resin. The O-ring 33 is made of a synthetic rubber such as nitrile rubber or ethylene propylene rubber.

  As shown in FIG. 4A, the cylindrical portion 31 of the connecting member 30 provided in the lower membrane module 20 is fitted into the lower connecting portion 26 of the water collecting case 22 of the membrane module 20 stacked immediately above. With this configuration, when the membrane modules 20 are stacked in a plurality of stages, the adjacent membrane modules 20 can be positioned accurately and the stacking posture of the membrane modules can be stabilized. Furthermore, by configuring the connecting member 30 with a hollow cylindrical portion 31, the permeated water that has passed through the membrane element 21 is led to the water collecting pipe 13 through the adjacent water collecting case 22.

  The connecting member 30 is attached to the water collecting case 22 so as to be slidable in the horizontal direction so that the distance between the water collecting cases 22 of the membrane module 20 can be absorbed and connected when the membrane modules 20 are stacked and installed. However, if there is no need to worry about errors, the connecting member 30 may be provided integrally with the water collection case 22.

  Returning to FIG. 2, the water collecting pipe 13 is connected to the upper connecting portion 25 of the uppermost membrane module 20 on the left side in the drawing and the lower connecting portion 26 of the lowermost membrane module 20 on the right side in the drawing, respectively. The lower connecting portion 26 of the uppermost membrane module 20 on the middle left side and the upper connecting portion 25 of the lowermost membrane module 20 on the right side in the drawing are sealed with a sealing member (not shown). In FIG. 2, the description of the upper connecting portion 25 and the lower connecting portion 26 is omitted, and the direction of the permeated water flow is indicated by a broken line arrow.

  As shown in FIG. 3B, the cylindrical portion 31 of the connecting member 30 is formed with an appropriate length, so that the connecting member inserted into the lower connecting portion 26 as shown in FIG. If the 30 O-rings 33 are not longer than the insertion length d so as not to be removed from the lower connecting portion 26, the sealing state of the lower connecting portion 26 can be maintained even if there is a gap between the membrane modules 20. ing.

  Returning to FIG. 3A, the upper and lower surfaces of the water collection case 22 are respectively formed with engagement holes 24 as a pair of left and right engaged portions. The engagement holes 24 are formed vertically so as to come into contact with the engagement holes 24 of the membrane modules 20 adjacent in the vertical direction when the membrane modules 20 are stacked, and the engagement holes of the membrane modules 20 adjacent in the vertical direction are formed. Each engagement portion 42 of a suspension jig 40 to be described later is penetrated in a state where the contact 24 is in contact with each other. The edge of the engagement hole 24 functions as a handle 27 for an operator to hold the membrane module. That is, the handle 27 is configured to come into contact with the handle 27 of the membrane module adjacent in the vertical direction.

  The suspension jig 40 of the membrane module 20 configured as described above will be described.

  As shown in FIG. 5A, the suspension jig 40 includes a plurality of base members 41 and a plurality of suspension jigs 40 that can be freely engaged with and disengaged from the engagement holes 24 provided in each membrane module 20 stacked in a plurality of stages. The engaging part 42 is provided. In the present embodiment, the base member 41 is provided with eight engaging portions 42. The number is the same as the number of stacking stages in the main body frame 11 of the membrane separation apparatus 10 of the membrane module 20. An annular portion 47 is formed at the upper end of the base member 41, and the hanging jig 40 is used in a state where the annular portion 47 is engaged with a hook or the like.

  As shown in FIG. 5 (b), the engaging portion 42 includes an engaging ring 43 and a sling piece in which a ring portion 44 fitted into the engaging ring 43 is formed at one end and the other end is sewn to the base member 41. 45, and the engagement ring 43 is fixed to a sewing portion 46 to the base member 41 of the sling piece 45.

  The base member 41 and the sling piece 45 are configured by a belt string. The belt string means a fiber string, and a belt string composed of synthetic fibers such as Tetron (trademark), nylon (trademark), and polyester is preferably used.

  As the long base member 41, a metal wire or chain that is harder than the hardness of the membrane module 20 may be used. However, the base member 41 and the membrane module 20 rub against each other while being lifted and transported. Damage may occur. However, it is preferable to use a belt sling because the risk of occurrence of such damage can be greatly reduced.

  The engaging portion 42 is formed on the lower surface side of the upper membrane module 20 from below the engaging hole 24 of the handle 27 portion formed on the upper surface side of the lower membrane module 20 among the adjacent membrane modules 20. The membrane module 20 is supported at the center of the sling piece 45 by inserting the ring portion 44 into the engagement ring 43 so that the ring portion 44 passes through the engagement hole 24 of the handle 27 portion. Will be.

  Thus, since the engaging part 42 engages with both the engaging holes 24 of the membrane modules adjacent vertically, each engaged membrane module 20 is vertically lifted by the lifting jig 40. Without being separated in the direction, the stacked postures can be transferred while being stably maintained.

  After inserting one end of the sling piece 45 in which the ring part 44 is formed into the engagement hole of the membrane module 20, the ring part 44 is engaged with the engagement ring 43 fixed to the base member 41. Thus, the suspension jig 40 and each membrane module 20 can be reliably engaged. In addition, since only the sling piece 45 comes into contact with the engagement hole of the membrane module 20, the risk of damage such as scratches is reduced.

  Normally, at least two suspension jigs 40 are used so as to engage with the membrane module 20 at least at two locations, but even when the intervals between the engagement portions 42 of the suspension jigs 40 are slightly different. By using a belt sling for the base member 41 and the engaging portion 42, it is expected that the membrane module 20 is slightly stretched due to the weight of the membrane module 20, so that the membrane module 20 is stably held in a substantially horizontal posture when the membrane module 20 is lifted. be able to.

  Returning to FIG. 5B, each engagement portion 42 has a lower end portion of the sling piece 45 that is turned back when the ring portion 44 is fitted into the engagement ring 43, with an interval H equal to or greater than the stacking interval of each membrane module. It is attached to the base member 41 so that it may become.

  As shown in FIG. 4A, the interval H is a length that is a natural number times the stacking interval h of each membrane module 20, for example, a length h that is 1 time, and a length that is equal to or less than a predetermined allowable length. It is set to the interval that is added. As shown in FIG. 4B, the predetermined allowable length is the insertion length of the convex portion formed in the other into the concave portion formed in one of the adjacent membrane modules 20, this embodiment. Then, the insertion length d is such that the O-ring 33 of the connecting member 30 inserted into the lower connecting portion 26 does not come out of the lower connecting portion 26. That is, the interval H is set to satisfy h ≦ H ≦ h + d.

  The engaging portions 42 attached to the long base member 41 are inserted and engaged with the engaging holes 24 provided in the membrane modules 20 stacked in a plurality of stages, and the upper end of the base member 41 is engaged. If it is lifted by a crane device or the like, it becomes possible to transfer a plurality of stacked membrane modules in a state of being integrally lifted.

  At this time, each membrane module 20 is individually suspended by each engaging portion 42 and lifted in a stable posture. Even if the vertically adjacent membrane modules 20 are separated from each other in the suspended state, the fitting state of the connecting portion can be maintained, so that the positioning state can be maintained. Furthermore, each engaging portion 42 and each engaging hole 24 need only have sufficient strength to withstand the weight of the single membrane module 20, so that they can be made of inexpensive materials without using expensive and strong materials. It is also possible to reduce the thickness of the material.

  Next, the usage method of the hanging jig 40 by this invention is demonstrated.

  The membrane module 20 can be replaced by removing the membrane separation device 10 from the membrane separation tank, or lowering the level of water to be treated in the membrane separation tank, and collecting the water collecting pipe 13 provided in the upper part of the membrane module group or the main body frame. 11 is removed, and the membrane module group is exposed to the atmosphere.

  Here, as shown in FIG. 6 (a), the membrane module 20e stacked in the fifth layer from the top of the group of membrane modules (20a to 20h) stacked in eight layers is replaced as a specific-stage membrane module. Will be explained. First, on the left and right sides of the membrane module group, the engagement portions 42 of the suspension jig 40 are engaged with the engagement holes 24 of the membrane modules from the uppermost membrane module 20a to the specific membrane module 20e. A joint process is performed. In the present embodiment, the suspension beam 48 suspended on a crane (not shown) is provided with four hooks 49 so that the membrane module 20 can be lifted from a square, and the suspension jig 40 is engaged with each hook 49. ing. Since the membrane module 20 to be lifted has five stages, five engaging portions 42 are used from the bottom of each lifting jig 40.

  As shown in FIG. 6 (b), after the lifting process of lifting the suspension beam 48 engaged with the four suspension jigs 40, as shown in FIG. 7 (a), from the uppermost membrane module 20a. A dividing step is performed in which the membrane module 20e up to a specific stage is placed on a base 50 different from the remaining membrane modules 20f, 20g, and 20h. The base 50 may be a separate body from the ground, or may be integral with the ground, or the ground itself.

  Next, as shown in FIG. 7B, after the membrane module 20 e at the specific stage is detached from the hanging jig 40, the upper end of the hanging jig 40 is lifted up, and the membrane module at the specific stage on the base 50 is A take-out step of taking out 20e is performed.

  As described above, the plurality of stages of membrane modules 20a to 20e engaged with the respective engaging portions 42 in the engagement step lift the suspension jig 40 in the division step, whereby the remaining membrane modules 20f to 20m in the membrane module group. It is separated from 20h and placed on the base 50. In this state, the membrane module 20e at a specific stage is detached from the hanging jig 40, and the hanging jig 40 is lifted, whereby only the membrane module 20e at the specific stage can be taken out.

  After the membrane module 20e is taken out, the new membrane module 20 is placed on the base 50 and the hanging jig 40 is suspended by a procedure reverse to the removal of the membrane module 20e. The connecting member 30 is inserted into the lower connecting portion 26 of the membrane module 20d, and the engaging jig 24 is engaged with the engaging hole 24 of the membrane module 20d and the engaging hole 24 of the new membrane module 20 in contact with each other. Engage with the mating portion 42.

  Thereafter, the uppermost membrane module 20a to the new membrane module 20 are stacked on the membrane module 20f remaining in the membrane separation apparatus 10, and the main body frame 11 and the water collecting pipe 13a are attached. Is returned to the membrane separation tank, or the water level of the water to be treated in the membrane separation tank is returned to the operating water level of the membrane separation apparatus 10.

  Thus, by using the hanging jig according to the present invention, it is possible to easily separate the membrane module at a specific stage from the membrane modules stacked in a plurality of stages without relying on manual work, and to perform replacement work and maintenance. It becomes like this.

  Hereinafter, another embodiment of the hanging jig and the membrane module according to the present invention will be described.

  In the above-described embodiment, the attachment interval H to the base member 41 of each engaging portion 42 of the hanging jig 40 is set to an interval obtained by adding a length shorter than the insertion length d to the stacking interval h. Although explained, it is not limited to this.

  As shown in FIG. 8 (a), the attachment interval H ′ of each engagement portion 42 of the suspension jig 40 to the base member 41 is a natural number times the stacking interval h of each membrane module 20, for example, It may be set to an interval obtained by adding a length shorter than a predetermined allowable length d to a length 2h that is twice. That is, it is set so as to satisfy 2h ≦ H ′ <2h + d. In addition, about the structure same as FIG. 5 (a), (b), the same code | symbol is attached | subjected and description is abbreviate | omitted.

  With this configuration, as shown in FIG. 8 (b), each engaging portion 42 has an engaging hole 24 in the handle 27 portion formed on the upper surface side of the lower membrane module 20 among the adjacent membrane modules 20. Is inserted into the engagement ring 43 through the ring portion 44 so that the ring portion 44 passes through the engagement hole 24 of the handle 27 formed on the lower surface side of the upper membrane module 20. As a result, the two-stage membrane module 20 is lifted at the center of the sling piece 45.

  The usage method of the hanging jig 40 by this another embodiment is demonstrated. As shown in FIG. 9 (a), a case will be described in which the membrane module 20e stacked in the fifth level from the top of the group of membrane modules (20a to 20h) stacked in eight levels is replaced as a specific level membrane module. . First, on each of the left and right sides of the membrane module group, each engagement portion 42 of the hanging jig 40 is inserted into the engagement hole 24 of each membrane module from the uppermost membrane module 20a to the membrane module 20f including the specific-stage membrane module 20e. An engaging step for engaging is performed.

  Here, the case where the lowermost engaging portion 42 engages two stages of the membrane module 20e and the membrane module 20f will be described, but only the membrane module 20e may be engaged.

  As shown in FIG. 9 (b), after the lifting step of lifting the suspension beam 48 engaged with the four suspension jigs 40, as shown in FIG. 10 (a), from the uppermost membrane module 20a. A dividing step of placing up to the membrane module 20f including the membrane module 20e at the specific stage on the base 50 different from the remaining membrane modules 20g and 20h is performed. The base 50 may be a separate body from the ground, or may be integral with the ground, or the ground itself.

  Next, as shown in FIG. 10 (b), after the membrane module 20 e and the membrane module 20 f at a specific stage are detached from the hanging jig 40, the upper end of the hanging jig 40 is lifted up to identify the base module 50. A step of taking out the stage membrane module 20e is performed.

  As described above, when the suspension jig 40 is lifted up from the plurality of membrane modules 20a engaged with the respective engaging portions 42 in the engagement process to the membrane module 20f including the membrane module 20e in the specific stage in the division process. The remaining membrane modules 20g and 20h in the membrane module group are separated and placed on the base 50. In this state, the membrane module 20e and the membrane module 20f at a specific stage are detached from the suspension jig 40 and the suspension jig 40 is lifted, whereby only the membrane module 20e at the specific stage can be taken out.

  After the membrane module 20e is taken out, the new membrane module 20 is placed on the base 50 and the hanging jig 40 is suspended by a procedure reverse to the removal of the membrane module 20e. The engaging part 42 is engaged with the engaging holes 24 of the membrane module 20f in contact with each other.

  Thereafter, the membrane module 20 a including the new membrane module 20 from the uppermost membrane module 20 a is stacked on the membrane module 20 g remaining in the membrane separation apparatus 10. By using the suspension jig 40 in this way, it is possible to easily separate the membrane module at a specific stage from the membrane modules stacked in a plurality of stages without relying on manual work, and to perform replacement work and maintenance. Become.

  Note that the natural number times the stacking interval h of each membrane module described above is not limited to twice, but may be three times or more. In other words, a plurality of stages of membrane modules can be suspended from the engaging portions 42 in accordance with the intervals at which the engaging portions 42 are attached. Therefore, the number of engaging portions 42 included in the base member 41 can be reduced. . By reducing the engagement portion 42, engagement and disengagement work can be reduced, and workability is improved.

  Further, a hanging jig 40 according to another embodiment will be described. In the hanging jig 40, each engaging portion 42 has a lower end portion of the sling piece 45 that is turned back when the ring portion 44 is fitted into the engaging ring 43, with an interval H ″ that is greater than or equal to the stacking interval of each membrane module It is attached to the base member 41 so that it may become.

  The interval H ″ is set to a length obtained by adding a length longer than a predetermined allowable length to a length h that is a natural number times the stacking interval h of each membrane module 20, for example, 1 time. . The predetermined permissible length is the insertion length of the convex portion formed on the other side into the concave portion formed on one side of the adjacent membrane module 20, which is the lower coupling portion 26 in this embodiment. The insertion length d is such that the O-ring 33 of the connecting member 30 does not come out of the lower connecting portion 26. That is, it is set to satisfy H ″> h + d.

  In the laminated state of the plurality of membrane modules 20, the concave portions and the convex portions of the adjacent membrane modules are connected to each other, so that the accurate positioning of the adjacent membrane modules 20 and the stacked posture can be stabilized.

  However, since the respective engaging portions 42 of the hanging jig 40 are attached to the base member 41 at intervals H ″, as shown in FIG. With the separation of the module 20, the insertion state of the concave portion and the convex portion can be released.

  Therefore, when the membrane module 20 is lifted outside the tank, the inside of the membrane module 20 is compared to the configuration in which the recessed portion and the convex portion are kept in the fitted state even in the separated state of the adjacent membrane module 20. In particular, the permeated water inside the water collection case 22 easily flows out from the lower connecting portion 26. Thereby, since the weight when the membrane module 20 is lifted can be reduced, workability such as replacement is improved.

  Furthermore, not only the lowermost stage of the membrane module 20 that is lifted by the lifting jig 40 but, for example, the engaging portion 42 that engages with the membrane module 20 located in the middle stage in a state where all the membrane modules 20 are lifted at once. The membrane module 20 can be exchanged by disengaging.

  In addition, each engaging portion 42 of the hanging jig 40 adds a length equal to or greater than a predetermined allowable length d to a length 2h that is a natural number times, for example, twice the stacking interval of each membrane module 20 to the base member. If it is a space | interval, as shown in FIG.11 (b), the two-stage membrane module 20 can be suspended from each engaging part 42. FIG. That is, since the plurality of stages of the membrane modules 20 can be suspended from the engaging portions 42 according to the intervals at which the engaging portions 42 are attached, the number of engaging portions 42 included in the base member 41 can be reduced. it can. By reducing the engagement portion 42, engagement and disengagement work can be reduced, and workability is improved.

  Note that the natural number times the stacking interval h of each membrane module described above is not limited to twice, but may be three times or more. In other words, a plurality of stages of membrane modules can be suspended from the engaging portions 42 in accordance with the intervals at which the engaging portions 42 are attached. Therefore, the number of engaging portions 42 included in the base member 41 can be reduced. . By reducing the engagement portion 42, engagement and disengagement work can be reduced, and workability is improved.

  In the above-described embodiment, the configuration in which the pair of left and right engagement holes are formed on the upper surface and the lower surface of the water collection case 22 has been described. However, the engagement holes are formed only on the upper surface side of the water collection case 22, You may comprise so that the edge part of an engagement hole may function as a handle.

  In this case, each engaging part 42 is engaged with a handle provided only on the upper surface side of the water collecting case of each membrane module 20.

  In the above-described embodiment, the case where the base member 41 of the hanging jig 40 and the sling piece 45 of the engaging portion 42 are formed by a belt sling has been described, but instead of the belt sling, a round sling, a winding chain sling, You may form by a wire rope sling etc.

  In the embodiment described above, the engaged portion included in the membrane module is configured by the engagement hole 24 formed in the water collecting case 22, and each engagement portion 42 provided in the hanging jig is configured in the engagement hole 24. Although the configuration in which the sling piece to be inserted is engaged has been described, the configuration of the engaged portion is not limited to this. Even if each engaging part provided in the hanging jig is configured with a hook-shaped member, the membrane module is provided with a concave part as an engaged part, and the hook-shaped member is fitted into the concave part. Good. In addition, each engaging portion provided in the hanging jig is configured by a ring-shaped member, the membrane module is provided with a columnar member as an engaged portion, and the ring-shaped member is fitted to the columnar member. It may be.

  In the above-described embodiment, the suspension beam 48 is provided with four hooks 49 so that the membrane module 20 can be lifted from a square, and each membrane module 20 is supported by the suspension jig 40 engaged with each hook 49. Although the configuration of suspending the four squares has been described, the configuration may be such that two opposing jigs 40 or two opposing sides of the membrane module 20 are suspended using two suspension jigs 40.

  The suspension jig 40 includes an adjustment mechanism that can adjust the attachment interval of the engagement portion 42 with respect to the base member 41, and each membrane module suspended on the suspension jig by adjusting the attachment interval of the engagement portion 42. You may comprise so that the distance between can be adjusted.

  Each of the above-described embodiments is an example of the present invention, and the present invention is not limited by the description. The specific configuration of each part can be appropriately changed and designed within the range where the effects of the present invention are exhibited. Needless to say.

DESCRIPTION OF SYMBOLS 10: Membrane separator 11: Main body frame 12: Air supply pipe 13 for aeration 13: Water collection pipe 20: Membrane module 21: Membrane element 22: Water collection case 23: Side plate 24: Engagement hole 25: Upper connection part 26: Lower part Connecting part 27: Handle 30: Connecting member 31: Tubular part 32: Base part 33: O-ring 40: Suspension jig 41: Base member 42: Engaging part 43: Engaging ring 44: Ring part 45: Sling piece 46: Sewing part

Claims (6)

A membrane module suspension jig used in a membrane separation apparatus that is assembled so that a plurality of stages of membrane modules are stacked and installed in a frame,
A long base member and a plurality of engaging portions that can be engaged with and disengaged from the engaged portions provided in each membrane module stacked in a plurality of stages, each engaging portion being a stack of each membrane module A membrane module suspending jig attached to the base member so as to have an interval greater than or equal to the interval.   The interval equal to or greater than the stacking interval is an interval obtained by adding a length equal to or less than a predetermined allowable length to a length that is a natural number times the stacking interval of each membrane module, and the predetermined allowable length is adjacent to the membrane. The membrane module suspension jig according to claim 1, wherein the length is set to the insertion length of the convex portion formed on the other side of the concave portion formed on one side of the module.   The interval equal to or greater than the stacking interval is an interval obtained by adding a length longer than a predetermined allowable length to a length that is a natural number times the stacking interval of each membrane module, and the predetermined allowable length is adjacent to the membrane module. The membrane module suspension jig according to claim 1, wherein the length is set to the insertion length of the convex portion formed on the other into the concave portion formed on the other.   The base member is constituted by a belt sling, and the engaging portion is formed with an engaging ring and a ring portion fitted into the engaging ring at one end, and the other end is sewn to the base member. The membrane module according to claim 1, further comprising a sling piece that engages with a joint portion, wherein the engagement ring is fixed to a sewing portion of the sling piece to the base member. Hanging jig. A membrane module supported by being suspended by the membrane module suspension jig according to any one of claims 1 to 4,
Each membrane module has an engagement hole as an engaged portion that engages with the engagement portion of the hanging jig at both ends, and when the membrane modules are stacked and arranged, the engagement holes of the membrane modules adjacent to each other vertically Membranes that are formed so as to be in contact with each other vertically and are configured to be able to engage with each of the engaging portions of the suspension jig in a state in which the engagement holes of the membrane modules adjacent to each other are contacted module. A method for using the membrane module suspension jig according to any one of claims 1 to 4,
Engage the membrane module group stacked in multiple stages to engage the engaging part of the suspension jig with the engaged part of the membrane module of a specific stage and the membrane module stacked above it Process,
A dividing step of lifting the upper end of the hanging jig and placing the membrane module at the specific stage and the membrane module stacked above the same on a base different from the remaining membrane modules of the membrane module group; ,
Hanging the membrane module including: a step of lifting the upper end of the hanging jig after removing the membrane module of the specific stage from the hanging jig and taking out the membrane module of the specific stage on the base. How to use the jig.

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