JP5704538B2 - Reverse osmosis membrane element exchange device, reverse osmosis membrane filtration device - Google Patents

Description

  The present invention relates to a reverse osmosis membrane element exchange device and a reverse osmosis membrane filtration device including the reverse osmosis membrane element exchange device, and more particularly to a reverse osmosis membrane element efficiently even when there are a plurality of pressure vessels containing the reverse osmosis membrane element. The present invention relates to a reverse osmosis membrane element exchange device and a reverse osmosis membrane filtration device.

  As a method for replacing a reverse osmosis membrane element in a seawater desalination facility using a reverse osmosis membrane element, a method disclosed in Patent Document 1 is known. Specifically, among the plurality of reverse osmosis membrane elements loaded in the pressure vessel (vessel), the used reverse osmosis membrane element is extracted from one opening (supply water side or permeate water side) of the vessel. At the same time, a new reverse osmosis membrane element is inserted from the other opening and accommodated in the vessel.

  However, the method for replacing the reverse osmosis membrane element disclosed in Patent Document 1 is to shorten the maintenance period (in the embodiment, one year unit) and replace only the end reverse osmosis membrane element. Such a method has a problem that the maintenance frequency increases and the operation efficiency is poor. In addition, in the method disclosed in Patent Document 1, since workers are required on both the supply water side and the filtrate water side in the opening of the vessel, a plurality of workers are necessarily required for replacement work. There is also a problem that work efficiency is poor.

  However, in consideration of the operation efficiency of the seawater desalination facility, when all the reverse osmosis membrane elements housed in the vessel are replaced, there are the following problems. In recent years, seawater desalination equipment has been increasing the diameter of the reverse osmosis membrane element and increasing the number of accommodations by increasing the length of the vessel for the purpose of increasing the amount of treated water. For this reason, the sliding resistance (friction resistance) at the time of reverse osmosis membrane element insertion with respect to a vessel increases, and the problem that the insertion operation | work to a vessel and the taking-out operation | work become difficult by human power has arisen.

  Patent Document 2 discloses a means for automating the reverse osmosis membrane element replacement operation with a view to reducing the workload of such an operator. The means disclosed in Patent Document 2 is to arrange a vessel in a vertical direction in a seawater desalination facility, and accommodate a reverse osmosis membrane element in a lifting manner or a pushing manner with respect to the vessel. According to such a means, it is not necessary for the operator to perform operations such as lifting, rotating, and pushing the reverse osmosis membrane element, and the work load is reduced.

  However, in the means disclosed in Patent Document 2, since the vessel is arranged vertically, the load applied to pulling up or pushing in increases as the number of reverse osmosis membrane elements accommodated increases. It is clear that this load is greater than the sliding resistance (friction resistance) when pushing the reverse osmosis membrane element placed in a horizontal state because gravity acceleration is added to the weight of the reverse osmosis membrane element. is there.

  In addition, the work of loading a heavy reverse osmosis membrane element on a vessel arranged in a vertical state involves a risk of dropping the reverse osmosis membrane element, which raises concerns about the safety of the operation.

  On the other hand, Patent Document 3 discloses a means for reducing the sliding resistance when the reverse osmosis membrane element is inserted. Specifically, the frictional resistance reduction process between the inner peripheral surface of the vessel and the reverse osmosis element is performed. Here, the specific means of the frictional resistance reduction processing is not particularly limited, but may be a method of installing convex portions and concave portions, a highly slippery member, a rotating body, etc. on the inner peripheral surface of the vessel. That's good. If such means is applied to reduce the sliding resistance of the reverse osmosis membrane element, it is considered that the reverse osmosis membrane element can be easily replaced and the workability can be improved.

JP-A-6-114239 International Publication No. 2011/007326 International Publication No. 2009/104750

  However, in a seawater desalination facility using a reverse osmosis membrane element, the pressure vessel that accommodates the reverse osmosis membrane element is horizontally arranged, and the opening of the vessel into which the reverse osmosis membrane element is inserted faces the same surface. A module structure in which a plurality of bundles are bundled. Therefore, the openings are arranged in both the horizontal direction and the vertical direction, and the replacement of the reverse osmosis membrane element involves a work at a high place. In this case, conventionally, an arm lift holding a reverse osmosis membrane element to be replaced is placed on a forklift or the like to lift the reverse osmosis membrane element to the height of the opening, and the operator inserts the reverse osmosis membrane element from the opening. For this reason, there was a limit to the improvement of work efficiency, and there was a problem in work safety because it involved work at a high place by workers.

  Therefore, in the present invention, a reverse osmosis membrane element exchanging apparatus capable of improving the efficiency of insertion and removal operations of reverse osmosis membrane elements with respect to a plurality of pressure vessels and maintaining the safety of the operation, and reverse osmosis including the same. An object is to provide a membrane filtration device.

A reverse osmosis membrane element exchanging device according to the present invention for achieving the above object includes a plurality of pressure vessels for accommodating a reverse osmosis membrane element wound with a reverse osmosis membrane, and the reverse osmosis membrane element is inserted therein. A reverse osmosis membrane element exchange device for exchanging the reverse osmosis membrane element from a reverse osmosis membrane module in which a plurality of the openings are arranged on the same surface by arranging the bundles so that the openings of the pressure vessel face the same direction. The reverse osmosis membrane element is placed with the end of the reverse osmosis membrane element facing in the direction of pushing the reverse osmosis membrane element from the opening into the pressure vessel. a mounting table which is location, a first moving means for moving in a first direction a horizontally placing table a perpendicular to the direction of pushing the, the mounting table the push write A second moving means for moving in a direction perpendicular to the direction and the first direction, and the reverse mounted on the mounting table by moving a rod facing the opening to the pressure vessel side. The reverse osmosis membrane element is pushed by pushing the osmosis membrane element into the pressure vessel and moving the rod connected to the reverse osmosis membrane element accommodated in the pressure vessel via a connecting means in a direction away from the pressure vessel. The reverse osmosis membrane element arranged on the mounting table by controlling the amount of movement of the driving means for taking out from the pressure vessel, the first moving means and the second moving means to any one of the plurality of openings are opposed have a, and a control unit for driving said drive means, said first moving means comprises a rail extending in the first direction, the mounting table before being placed on the rail and the front A frame portion standing in a state of supporting the second moving means and traveling on the rail, a rolling roller disposed on the upper portion of the frame portion, and an upper direction of the frame portion and the direction of pushing by the rolling roller And a guide rail that is sandwiched and extends in the first direction .
With the above configuration, the reverse osmosis membrane element can be exchanged quickly and safely for the reverse osmosis membrane module.

The mounting table includes a third moving unit capable of adjusting a position of the reverse osmosis membrane element mounted on the mounting table in the first direction and the second direction, the mounting table, and the opening. A relative position adjusting means for adjusting a relative position with respect to the portion using a target disposed in the opening is provided.
With the above configuration, the relative position deviation between the mounting table and the opening after being moved by the first moving means and the second moving means is adjusted by the relative position adjusting means that adjusts using the target disposed in the opening. Therefore, the reverse osmosis membrane element can be reliably inserted into the opening, and the reverse osmosis membrane element accommodated in the pressure vessel can be reliably taken out.

The reverse osmosis membrane element has a center pipe around which the reverse osmosis membrane is wound and filtered water filtered by the reverse osmosis membrane is discharged, and the rod can be inserted through the center pipe. The connecting means is disposed at the tip of the rod and can be inserted into the center pipe, and is connected to the center pipe and the rod by expanding by air pressure or hydraulic pressure and crimping to the center pipe. It is a hollow elastic member, and the control section can control the rod to be pulled out from the pressure vessel through the driving means, and the rod is connected to the central pipe and the rod by the connecting means. It is possible to take out the reverse osmosis membrane element from the pressure vessel by performing control to draw out the pressure vessel from the pressure vessel.
With the above configuration, the reverse osmosis membrane element accommodated in the pressure vessel can be taken out with a simple configuration.

Further, the pressure vessel is configured such that a plurality of the reverse osmosis membrane elements can be inserted, and the reverse osmosis membrane elements are connected in series in the pressure vessel, and the reverse osmosis membrane element has the reverse osmosis membrane around it. A central pipe from which the filtered water wound and filtered by the reverse osmosis membrane is discharged is disposed, and the adjacent reverse osmosis membrane elements in the pressure vessel are adjacent to each other by a hollow joint that can be fitted into the central pipe. The central pipes are connected to each other, a protruding portion protruding from the inner wall is disposed on the inner wall of the joint, the rod can be inserted through the central pipe, and the connecting means includes the rod The control unit has a shape that is disposed at the tip of the projection and engages with the protrusion, and the control unit pulls the rod from the pressure vessel through the driving unit. Control is made possible, and the reverse osmosis membrane element can be taken out from the pressure vessel together with the joint by performing control to pull out the rod from the pressure vessel after engaging the connecting means with the engaging portion. It is characterized by that.
With the above configuration, the reverse osmosis membrane element accommodated in the pressure vessel can be taken out with a simple configuration.

The driving means is a multistage hydraulic cylinder having a telescopic structure with the rod as a tip and capable of extending and contracting in the insertion direction of the reverse osmosis membrane element.
With the above configuration, the drive means can push the reverse osmosis membrane element into the depth of the pressure vessel, and the drive means is shortened when the rod is contracted, so the area occupied by the reverse osmosis membrane element exchange device is reduced. be able to.

Further, the drive means is characterized in that an encoder for calculating a feed amount of the rod is arranged.
With the above-described configuration, the actual feed amount of the rod can be detected, so that the reverse osmosis membrane element can be reliably inserted and removed.

The mounting table is provided with loading means loaded with a plurality of the reverse osmosis membrane elements, and the loading means places the reverse osmosis membrane element mounted on the mounting table on the pressure vessel. After the insertion, the new reverse osmosis membrane element can be mounted on the mounting table.
With the above configuration, since the reverse osmosis membrane element can be continuously inserted into the pressure vessel, the working efficiency can be improved.

On the other hand, the reverse osmosis membrane filtration device according to the present invention is characterized in that the above-mentioned reverse osmosis membrane element exchange device is arranged at a position facing the plurality of openings of the reverse osmosis membrane module.
With the above configuration, a reverse osmosis membrane filtration device capable of quickly and safely replacing a reverse osmosis membrane element housed in a pressure vessel.

  According to the reverse osmosis membrane element exchange device and reverse osmosis membrane filtration device having the above-described features, the reverse osmosis membrane element exchange operation for the pressure vessel, which has conventionally required the most labor, can be automated to speed up the operation. And safety. Further, even if the pressure vessel is arranged at a high place, the reverse osmosis membrane element can be automatically inserted into the pressure vessel, or the used reverse osmosis membrane element accommodated in the pressure vessel can be taken out.

It is a front view of the reverse osmosis membrane module used as the application object of the reverse osmosis membrane element exchange apparatus of this embodiment, and the reverse osmosis membrane element apparatus of this embodiment. FIG. 2 is a perspective view of FIG. 1 (the mounting table is omitted). The schematic diagram of the reverse osmosis membrane element of this embodiment is shown. It is a side view of the mounting base of this embodiment. It is a top view of the mounting base of this embodiment. It is a schematic diagram of the drive means of 1st Embodiment. It is a schematic diagram of the drive means of 2nd Embodiment. It is a schematic diagram which shows operation | movement (before pushing) of the reverse osmosis membrane element exchange apparatus of this embodiment. It is a schematic diagram which shows operation | movement (after pushing) of the reverse osmosis membrane element exchange apparatus of this embodiment. FIG. 10A is a schematic diagram of a driving unit according to a third embodiment, FIG. 10A is a schematic diagram during contraction, and FIG. 10B is a schematic diagram when extended. It is a schematic diagram which shows operation | movement (at the time of contraction) of the drive means of 3rd Embodiment. It is a schematic diagram which shows operation | movement (at the time of 1st expansion | extension) of the drive means of 3rd Embodiment. It is a schematic diagram which shows the operation | movement (at the time of 2nd expansion | extension) of the drive means of 3rd Embodiment. It is a figure which shows the process of taking out RO membrane element using the connection means of 1st Embodiment. It is a figure which shows the case where RO membrane element is taken out using the connection means of 2nd Embodiment. It is AA sectional view taken on the line of FIG. It is the BB sectional drawing of FIG. FIG. 16 is a view as viewed in the direction of the arrow C in FIG. 15, showing a time when the engaging portion of the connecting means passes. FIG. 16 is a view taken in the direction of the arrow C in FIG. 15 and shows an arrangement when the connecting means rotates through the engaging portion and then the RO means is taken out. It is a schematic diagram of the loading means of the first embodiment. It is a schematic diagram of the loading means of the second embodiment. It is a schematic diagram of the loading means of 3rd Embodiment.

  Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the components, types, combinations, shapes, relative arrangements, and the like described in this embodiment are merely illustrative examples and not intended to limit the scope of the present invention only unless otherwise specified. . In the figure, the X axis (horizontal direction), the Y axis (horizontal direction), and the Z axis (vertical direction) are orthogonal to each other.

  FIG. 1 shows a front view of a reverse osmosis membrane element exchange device of the present embodiment and a reverse osmosis membrane module 100 to which the reverse osmosis membrane element device of the present embodiment is applied, and FIG. 2 is a perspective view of FIG. The description of the table is omitted). The reverse osmosis membrane module 100 to which the present embodiment is applied extracts, for example, fresh water from seawater, and the reverse osmosis membrane filtration device includes the reverse osmosis membrane module 100 and the reverse osmosis membrane element exchange device 10 of the present embodiment. Is formed.

  The reverse osmosis membrane module 100 is fixed in such a manner that a plurality of cylinder-shaped pressure vessels 102 (vessels) arranged so that the longitudinal direction is horizontal (Y-axis direction) is bundled, and the reverse osmosis membrane element is attached to each pressure vessel 102. (Hereinafter simply referred to as RO (Reverse Osmosis) membrane element)). In the reverse osmosis membrane module 100, the opening 104 of the pressure vessel 102 for inserting or removing the RO membrane element 108 (FIG. 3) forms the same surface (the surface on the −Y axis side of the reverse osmosis membrane module 100). Are arranged as follows. That is, as shown in FIGS. 1 and 2, the pressure vessel 102 is supported by a frame 106 and arranged in an array in the horizontal direction (X-axis direction) and the vertical direction (Z-axis direction), and the openings 104 are arranged on the arrangement surface ( XZ plane).

  FIG. 3 shows a schematic diagram of the reverse osmosis membrane element. As shown in FIG. 3, the RO membrane element 108 used in this embodiment includes a reverse osmosis membrane 112 formed in a bag shape on the outer periphery of a central pipe 110 and a mesh spacer for allowing raw water (salt-containing water) to pass therethrough. 114 is layered and wound into a roll. Inside the reverse osmosis membrane 112 formed in a bag shape, a flow path material 116 is disposed as a spacer for allowing permeated water to pass therethrough. In the RO membrane element 108 having such a configuration, raw water (salt-containing water) is supplied from the opening 104 at one end (on the −Y axis side) to the mesh spacer 114 disposed between the reverse osmosis membranes 112. ) Flows in. By applying a pressure equal to or higher than the osmotic pressure to the raw water flowing into the mesh spacer 114, the water in the raw water permeates the reverse osmosis membrane 112 to the channel material 116 inside the reverse osmosis membrane 112 formed in a bag shape. Flows in. The water (filtrated water) that has flowed into the flow path material 116 flows into the center pipe 110, and is provided in the center of the other end (+ Y axis side) (filtrated water side) (hole connected to the center pipe 110). Discharged from. The concentrated water remaining in the mesh spacer 114 without being filtered is discharged from the mesh spacer 114 on the other end side.

  A plurality of the RO membrane elements 108 are accommodated in the pressure vessel 102 and pressurized with raw water in the pressure vessel 102, and by this pressurization, the raw water is separated into filtered water and concentrated water in the reverse osmosis membrane. Here, the adjacent RO membrane elements 108 are connected in series in a state where the central pipes 110 are accommodated in the pressure vessel 102 by connecting the central pipes 110 to each other by a hollow joint 118 fitted into the end of the central pipe 110. Connected (see FIG. 15). Therefore, the filtered water filtered by each RO membrane element 108 is discharged to the outside of the pressure vessel 102 through the central pipe 110 connected to one RO membrane element 108. The concentrated water discharged from the previous RO membrane element 108 is supplied to the next RO membrane element 108 and separated into filtered water and concentrated water, and the concentrated water discharged from the last RO membrane element 108 is pressure vessel. 102 is discharged to the outside.

  As shown in FIGS. 1 and 2, the reverse osmosis membrane element exchange device 10 of the present embodiment is mainly configured by a stacker crane 12, a mounting table 38 (not shown in FIG. 2), and a control unit 36. The stacker crane 12 is attached to the frame portion 14 in which a rectangular frame portion 14 (first moving means) that can move in the horizontal direction in a state where it is erected in the vertical direction (Z-axis direction), and a mounting table 38 are arranged. The outer shape is formed by the load receiving table 22 (second moving means) that moves in the vertical direction together with the mounting table 38 along the frame portion 14. The frame portion 14 is disposed so as to face the opening 104 (array plane: XZ plane) of the pressure vessel 102 of the reverse osmosis membrane module 100. A rail 16 on which the frame portion 14 travels is disposed on the floor surface on which the frame portion 14 is disposed, and the longitudinal direction of the rail 16 is parallel to the direction in which the pressure vessels 102 are arranged in the horizontal direction (first direction). : X direction). And the traveling wheel 18 arrange | positioned at the lower end of the frame part 14 moves on the rail 16, and the frame part 14 can move now to the both ends of the horizontal direction (X direction) of an arrangement surface (XZ surface). Yes.

  Therefore, even if the frame portion 14 travels on the rail 16 and the opening portion 104 facing the frame portion 14 is replaced, the distance between the frame portion 14 and the opening portion 104 (array surface) facing the frame portion 14 is constant. Further, the rail 16 is further extended from a position facing the end portion in the horizontal direction (X-axis direction) of the arrangement surface (XZ surface) of the reverse osmosis membrane module 100, and the frame portion 14 is opposed to the arrangement surface (XZ surface). It is possible to move to the preparation area 122 (FIG. 2) that is located away from the position. As a result, the RO membrane element 108 can be easily placed on the placement table 38 in the preparation area 122, or the used RO membrane element 108 arranged on the placement table 38 can be easily taken out from the preparation area 122.

  A coaxial gear (not shown) is disposed on the traveling wheel 18 and can travel on the rail 16 by receiving power from the traveling motor 20 meshing with the gear (not shown). The traveling motor 20 can control the rotation direction and the rotation amount by the control unit 36, and the frame 14 is rotated by rotating the traveling wheel 18 in an arbitrary direction with an arbitrary rotation amount corresponding to the rotation direction and the rotation amount. It can be moved to any position.

  The load receiving platform 22 is arranged in a manner of sandwiching the frame portion 14 from the thickness direction, and the rolling roller 24 disposed on the load receiving platform 22 contacts the frame portion 14 from the thickness direction (Y-axis direction), It is suspended by a chain 26. The chain 26 can move in the vertical direction (second direction: Z direction) under the power from the lifting motor 28. The lifting / lowering motor 28 can be controlled by the control unit 36 in the rotation direction and the rotation amount, and by controlling the feeding direction and the feeding amount of the chain 26 corresponding to the rotation direction and the rotation amount, the load receiving platform 22 can be moved to an arbitrary height. It can be moved to the position.

  Further, as shown in FIG. 2, an insulating trolley 30 for supplying power to the stacker crane 12 side is arranged on the floor surface in parallel with the rails 16, and the stacker crane 12 and the control unit 36 (mounting table 38) are always insulated. Electric power is supplied from the trolley 30. A guide rail 32 is disposed at a position where the upper end of the frame portion 14 passes horizontally and in the same direction as the rail 16, and a rolling roller 34 disposed at the upper end of the frame portion 14 abuts on the guide rail 32, thereby The fall of the part 14 is prevented.

  The control unit 36 controls the rotation direction and the rotation amount of the driving motor 70 that drives the traveling motor 20, the lifting motor 28, and driving means 58 and 72 described later. In addition, the control unit 36 moves the mounting table 38 to a position facing any one of the openings 104 of the plurality of pressure vessels 102 arranged in an array, and the RO membrane element 108 disposed on the mounting table 38 is moved. Control is performed to insert (push in) the pressure vessel 102 or take out the used RO membrane element 108 accommodated in the pressure vessel 102. In the present embodiment, the stacker crane 12 is disposed under the stacker crane 12, but may be separated from the stacker crane 12.

  The control unit 36 includes a position where the opening 104 of each pressure vessel 102 constituting the reverse osmosis membrane module 100 and the mounting table 38 face each other, and the traveling motor 20 when the mounting table 38 is disposed in the preparation area 122, ascending and descending. Rotation amount information obtained by converting the rotation amount of the motor 28 into data with a constant angular resolution (information about a rotation angle based on a certain rotation position and including a circulation component) is held. The control unit 36 always acquires rotation amount information obtained by converting the current rotation amounts of the travel motor 20 and the lifting motor 28 into data. Further, the control unit 36 can select the rotation amount information corresponding to the position information of the opening 104 of each pressure vessel 102 and the mounting table 38 and the position information of the preparation area 122.

  When the position information of the opening 104 as a new movement destination is input by a key operation or the like, the control unit 36 rotates the rotation amount information corresponding to the current position information and the position information of the movement destination. The difference with the amount information is calculated, and output signals corresponding to the rotation direction and the rotation amount corresponding to the difference are output to the traveling motor 20 and the lifting motor 28, respectively, and the mounting table 38 is opened as a new moving destination opening 104. It can be moved to a position or the like opposite to.

  The stacker crane 12, the guide rail 32, and the mounting table 38 are used when the mounting table 38 inserts the RO membrane element 108 into the pressure vessel 102 as described later, or the used RO membrane element accommodated in the pressure vessel 102. When removing 108, rigidity is maintained against the reaction force received due to the weight of the RO membrane element 108 and the frictional resistance between the RO membrane element 108 and the pressure vessel 102, and the RO membrane element 108 can be taken in and out reliably. It is designed to be

  FIG. 4 shows a side view of the mounting table of this embodiment, and FIG. 5 shows a plan view of the mounting table of this embodiment. The mounting table 38 is a table for placing and fixing the RO membrane element 108 on the cargo receiving table 22. The mounting table 38 is attached to the first member 40 having a longitudinal direction in the horizontal direction (X-axis direction) and the first member 40 having a columnar shape standing on the cargo receiving table 22. The second member 46 is slidable in the vertical direction (Z-axis direction) and is attached to the second member 46, and the relative position between the second member 46 is horizontal (X-axis direction). The whole is constituted by the third member 50 that can slide.

  The 1st member 40 and the 2nd member 46 are connected via the raising / lowering moving means (3rd moving means). The up-and-down moving means is a linear guide that slides the relative position of the second member 46 with respect to the first member 40 in the vertical direction, and is attached to the first member 40 and rotates in the longitudinal direction with the vertical direction as the longitudinal direction. A ball screw 42 that rotates as a shaft, a motor 44 that rotates the ball screw 42, and a slider (not shown: integrated with the second member 46) that is attached to the second member 46 and screwed with the ball screw 42. Have. Therefore, the second member 46 can slide the vertical position relative to the first member 40 depending on the rotation direction and the rotation amount of the ball screw 42.

  The second member 46 and the third member 50 are connected via a horizontal moving means (third moving means). The horizontal moving means is a linear guide that slides the relative position of the third member 50 with the second member 46 in the horizontal direction, and is attached to the second member 46, and the horizontal direction (X-axis direction) is the longitudinal direction. And a ball screw 48 that rotates about its longitudinal direction as a rotation axis, a motor (not shown) that rotates the ball screw 48, and a slider (not shown: third member) that is attached to the third member 50 and screwed into the ball screw 48. 50). Therefore, the third member 50 can slide the horizontal relative position with the second member 46 depending on the rotation direction and the rotation amount of the ball screw 48.

  The third member 50 includes a support portion 52 that horizontally supports the RO membrane element 108, and the RO membrane element 108 disposed on the support portion 52 is pushed into the pressure vessel 102 or is used in the pressure vessel 102. Using the driving means 58 and 72 (see FIGS. 6 and 7) for taking out the RO membrane element 108 and the target disposed in the opening 104 of the pressure vessel 102, the opening 104 and the mounting table 38 (on the support 52) Relative position adjusting means (not shown) for adjusting a relative position shift (a shift in the X-axis direction and the Z-axis direction) with respect to the disposed RO membrane element 108 is disposed.

  The relative position adjusting means (not shown) is driven by the control unit 36 after the control unit 36 moves the mounting table 38 to a position facing the opening 104 of the predetermined pressure vessel 102. The relative position adjusting means is disposed on the third member 50, for example, and is a camera (not shown) that captures image data of a subject reflected in the direction in which the optical axis is directed in the direction in which the RO membrane element 108 is inserted into the pressure vessel 102. And a target (not shown) arranged at a predetermined position of the opening 104 of the pressure vessel 102 from the image data, and the motor 44 of the lifting and lowering means so that the target (not shown) is at a predetermined position in the image. And a relative position adjustment unit (not shown) that controls the amount of rotation of a motor (not shown) of the horizontal movement means.

  Further, for example, a transmission unit (not shown) that emits laser light toward a target (not shown) that is arranged on the third member 50 and arranged at a predetermined position of the opening 104 of the pressure vessel 102, and a third member 50, receiving a laser beam (not shown) that receives a laser beam reflected by a target (not shown), and controlling the amount of rotation of the motor 44 of the elevating and lowering movement means and the motor (not shown) of the horizontal movement means. It is good also as a structure which has a relative position adjustment part (not shown) which receives a laser beam from a transmission part (not shown) in a part (not shown).

  In the former configuration, when the target (not shown) is at a predetermined position (for example, the center) in the image, the central axis of the pressure vessel 102 and the central axis of the RO membrane element 108 are arranged in advance so as to be coaxial. It needs to be adjusted. In the latter configuration, the target (not shown) uses, for example, a mirror having a high reflectance of laser light, and when the receiver (not shown) receives the reflected light of the laser light (or the reflected light has the maximum intensity). It is necessary to adjust in advance so that the central axis of the pressure vessel 102 and the central axis of the RO membrane element 108 are arranged coaxially.

  As described above, the displacement of the relative position between the mounting table 38 and the opening 104 after the movement by the frame portion 14 (first moving means) and the load receiving table 22 (second moving means) is changed to the opening 104 (opening portion). Since it can be adjusted by a relative position adjusting means (not shown) that adjusts using a target (not shown) arranged at a place other than 104, the reverse osmosis membrane element is surely inserted into the opening 104. Further, as will be described later, the RO membrane element 108 accommodated in the pressure vessel 102 can be reliably taken out. The relative position adjusting means (not shown) finely adjusts a small positional deviation of the mounting table 38 in the X-axis direction and the Z-axis direction, but is controlled by the above-described relative position adjusting unit (not shown). The control unit 36 may perform this directly.

  The support portion 52 includes a rolling contact roller 52 a that is in rolling contact with the side surface of the RO membrane element 108, and the support portion 52 is configured such that the rolling contact position of the rolling contact roller 52 a with the RO membrane element 108 follows the side surface of the RO membrane element 108. Is arranged. The support 52 is arranged so that the RO membrane element 108 is supported at two points by the rolling roller 52a (see FIG. 1) when viewed from the end surface direction of the RO membrane element 108 (may be more than three-point support) The RO membrane elements 108 are arranged side by side in the insertion direction (Y-axis direction) into the pressure vessel 102. The rotating shaft of the rolling roller 52a is directed in a direction perpendicular to the direction in which the RO membrane element 108 is pushed in (+ Y axis direction) or the direction in which it is taken out (−Y axis direction), and the RO membrane element 108 is pushed in by the rod 56. When moving on 38, the rolling roller 52a is rotated by the frictional force with the RO membrane element. Thereby, the frictional resistance when the rod 56 pushes in the RO membrane element 108 (when pulling it in) can be reduced. A material having a small frictional resistance with the RO membrane element 108 may be disposed instead of the rolling roller 52a.

  FIG. 6 shows a schematic diagram of the driving means of the first embodiment. The drive means 58 of 1st Embodiment drives the rod 56 by chain drive. In order to arrange the driving means 58, an internal space 50 a is arranged in the third member 50, and the third member 50 is long in the Y-axis direction at a position between the support portions 52 on the surface on the + Z-axis side of the third member 50. A slit 50b (see FIG. 5) that has a direction and opens the internal space 50a is arranged. The driving means 58 of the first embodiment is basically configured in this internal space 50 a based on a chain 64 that is looped between the driving gear 60 and the driven gear 62 and a slider 66 that is fixed to the chain 64. . The slider 66 is exposed to the outside through the slit 50b, and a rod 56 having a longitudinal direction in the direction (+ Y-axis direction) in which the RO membrane element 108 is inserted is connected to the exposed portion of the slider 66. Here, the drive motor 70 (not shown in FIG. 6) of the drive means 58 is arranged to drive the drive gear 60. Note that the length between the drive gear 60 and the driven gear 62 (the feed amount of the rod 56) is designed in consideration of the length in the longitudinal direction of the pressure vessel 102 and the length of the RO membrane element 108. With the above configuration, the slider 66 and the rod 56 can slide in the Y-axis direction by the rotation of the drive gear 60 driven by the drive motor 70 (not shown in FIG. 6).

  Note that a slide guide 68 for improving the stability of the slider 66 may be provided below the slider 66. When inserting the RO membrane element 108 into the pressure vessel 102 using the rod 56 (pushing it in), the RO membrane element 108 is larger than the inner diameter of the central pipe 110 of the RO membrane element 108 at the + Y-axis end of the rod 56. It is assumed that a contact plate 56a that is smaller than the end portion is disposed.

  FIG. 7 shows a schematic diagram of the driving means of the second embodiment. The driving means 72 of the second embodiment drives the rod 56 with a linear guide, similarly to the above-described lifting movement means and horizontal movement means. The driving means 72 is disposed in the internal space 50 a of the third member 50, and a ball screw 74 that rotates with the Y-axis direction as the longitudinal direction and the longitudinal direction as the rotation axis, a drive motor 70 that rotates the ball screw 74, and the ball screw 74. The slider 76 is disposed on the extension line in the insertion direction of the RO membrane element 108 and is exposed from the slit 50b. The rod 56 is attached to a portion of the slider 76 exposed from the slit 50b. The feed amount of the driving means 72 (the length of the ball screw 74) is designed in consideration of the length in the longitudinal direction of the pressure vessel 102 and the length of the RO membrane element 108.

  The above-described control unit 36 converts the rotation amount of the drive motor 70 when the rod 56 is extended to the + Y axis side in order to drive the drive units 58 and 72 of the first and second embodiments. Rotation amount information and rotation amount information obtained by converting the rotation amount of the drive motor 70 when the rod 56 is most extended to the −Y axis side are held. Further, the control unit 36 constantly acquires rotation amount information obtained by converting the current rotation amount of the drive motor 70 into data. Further, the control unit 36 can extract the rotation amount information corresponding to the position information when the rod 56 is extended most to the −Y axis side and the position information when the rod 56 is extended most to the + Y axis side. It has become.

  Therefore, when the position information when the rod 56 is most extended to the + Y-axis side by the key operation or the position information when the rod 56 is most extended to the -Y-axis side is input by a key operation or the like, the corresponding rotation amount is input. The difference between the information and the current rotation amount information of the drive motor 70 is calculated, an output signal corresponding to the rotation direction and the rotation amount corresponding to the difference is output to the drive motor 70, and the rod 56 is moved to a predetermined position. Can be made. In other words, the RO membrane element 108 placed on the placement table 38 can be pushed into the pressure vessel 102, or the RO membrane element 108 housed in the pressure vessel 102 can be pulled out and taken out from the pressure vessel 102 as described later.

  FIG. 8 shows the operation (before pushing) of the reverse osmosis membrane element exchange device of the present embodiment, and FIG. 9 shows the operation (after pushing) of the reverse osmosis membrane element exchange device of the present embodiment. Operation | movement of the reverse osmosis membrane element exchange apparatus 10 of this embodiment is demonstrated. Here, a case where the RO membrane element 108 is inserted (pushed) into the pressure vessel 102 will be described.

  First, when the reverse osmosis membrane element exchange device 10 is activated, it is assumed that the stacker crane 12 is in a position facing the preparation area 122 and the mounting table 38 is in the lowest position. In addition, it is assumed that the driving motors 70 of the driving units 58 and 72 arranged on the mounting table 38 have a rotation amount when the rod 56 is slid to the most -Y axis side.

  First, in the preparation area 122, an operator mounts the RO membrane element 108 on the mounting table 38 (supporting portion 52) using a lift or the like (see FIG. 1). At this time, the contact plate 56a disposed at the tip of the rod 56 on the + Y axis side faces or contacts the end portion of the RO membrane element 108 on the −Y axis side.

  Then, the operator inputs information on the position of the opening 104 of the pressure vessel 102 into which the RO membrane element 108 is inserted in the control unit 36 by key operation or the like, and the control unit 36 has the mounting table 38 facing the opening 104. Output signals are output to the traveling motor 20 and the lifting / lowering motor 28 so as to be positioned. Then, after the mounting table 38 is moved to a position facing the opening 104, the control unit 36 is relative to each other so that the central axis of the RO membrane element 108 and the central axis of the pressure vessel 102 are coaxial (FIG. 8). The position adjusting means (not shown) is driven to perform fine adjustment of the mounting table 38 in the X-axis direction and the Z-axis direction.

  Then, the worker inputs position information when the rod 56 is extended most on the + Y axis side to the control unit 36 by a key operation or the like. Then, the control part 36 outputs an output signal to the drive motor 70 of the drive means 58 and 72, drives the drive motor 70, and moves the rod 56 to the + Y-axis side. As a result, the rod 56 moves to the + Y axis side (pressure vessel 102 side), and the rod 56 pushes the RO membrane element 108 toward the pressure vessel 102 side. Then, the drive of the drive motor 70 is stopped when the rod 56 reaches the position where it is most extended to the + Y axis side (FIG. 9).

  Next, the worker inputs position information when the rod 56 is extended most to the −Y axis side to the control unit 36, and the control unit 36 outputs an output signal to the drive motor 70 to move the rod 56 to the −Y axis side. Further, the worker inputs position information on the position where the mounting table 38 faces the preparation area 122 to the control unit 36, and the control unit 36 outputs an output signal to the traveling motor 20 and the lifting motor 28. The crane 12 (the frame portion 14 and the cargo receiving platform 22) is moved to a position facing the preparation area 122.

  As described above, since a plurality of RO membrane elements 108 are accommodated in one pressure vessel 102, the above-described steps are repeated and the operation of inserting the RO membrane elements 108 into the same pressure vessel 102 is repeated. At this time, joints 118 (see FIG. 15) that are fitted into the center pipe 110 at both ends in the longitudinal direction are fitted in advance into the end portion on the + Y-axis side of the center pipe 110 of the RO membrane element 108 to be newly inserted. When the new RO membrane element 108 is inserted into the pressure vessel 102 into which the RO membrane element 108 has already been inserted, the joint 118 is attached to the end of the central pipe 110 of the RO membrane element 108 into which the RO membrane element 108 has already been inserted. While being inserted (see FIG. 15), the rod 56 is pushed into the pressure vessel 102 together with the RO membrane element 108 into which the rod 56 has already been inserted. This operation is repeated until the inside of the pressure vessel 102 is completely filled with the RO membrane element 108. After the predetermined number of RO membrane elements 108 are accommodated in one pressure vessel 102, the above operation is performed in the other pressure vessel 102. Will repeat.

  As described above, the reverse osmosis membrane element exchange device 10 of the present embodiment includes an opening portion of each pressure vessel 102 in the reverse osmosis membrane module 100 having the pressure vessels 102 arranged in an array in the X-axis direction and the Z-axis direction. The RO membrane element 108 is reliably moved by the stacker crane 12 to a position opposed to 104 without depending on human power, and the relative position adjusting means (the central axis of the RO membrane element 108 and the central axis of the pressure vessel 102 are coaxial). (Not shown), the positional deviation between the mounting table 38 and the opening 104 is corrected without relying on human power, and the RO membrane element 108 is driven without driving human power by driving the rod 56 arranged on the mounting table 38 in the + Y-axis direction. The reverse osmosis membrane element can be inserted into the pressure vessel 102 with certainty (push-in), and the reverse osmosis membrane element can be quickly and safely inserted into the reverse osmosis membrane module 100. It can be carried out in.

  FIG. 10 shows a schematic diagram of the driving means of the third embodiment, FIG. 10 (A) shows a schematic diagram during contraction, and FIG. 10 (B) shows a schematic diagram during expansion. FIG. 11 shows the operation of the driving means of the third embodiment (during contraction), FIG. 12 shows the operation of the driving means of the third embodiment (during the first stage expansion), and FIG. The operation of the driving means of the third embodiment (when the second stage is extended) is shown.

  In the driving means 58 and 72 of the first embodiment and the second embodiment, the number of RO membrane elements 108 pushed out by the rod 56 increases each time the operation of inserting the RO membrane element 108 into one pressure vessel 102 is repeated. The frictional resistance between the RO membrane element 108 and the pressure vessel 102 increases, and the load on the driving means 58 and 72 increases. Therefore, in this embodiment, in order to enable the RO membrane element 108 mounted on the mounting table 38 to be pushed deep inside the pressure vessel 102 from the beginning, a multistage hydraulic cylinder 78 having a telescopic type cylinder rod is provided. did.

  The multistage hydraulic cylinder 78 used in the present embodiment includes a cylinder 80 having an oil chamber (not shown) therein, a first rod 82 that extends from the cylinder 80 to the + Y-axis side due to the inflow of hydraulic oil into the oil chamber, and an operation. The second rod 84 that extends from the first rod 82 to the + Y-axis side due to the inflow of oil is basically configured. The multistage hydraulic cylinder 78 is connected to a reserve tank (not shown) that stores hydraulic oil via a pump (not shown). The pump (not shown) can be rotated forward and reverse, and the hydraulic oil is supplied to the reserve tank (not shown). The hydraulic oil in the multistage hydraulic cylinder 78 can be sucked with a constant suction force (pressure) and supplied to the preparation tank from the unillustrated side to the multistage hydraulic cylinder 78 side. Therefore, the multistage hydraulic cylinder 78 can be expanded with a constant force in the + Y-axis direction or contracted with a constant force in the -Y-axis direction by forward / reverse rotation of a pump (not shown). The pump (not shown) can be driven by a drive signal from the control unit 36 described above.

  As shown in FIGS. 11 to 13, the multistage hydraulic cylinder 78 is disposed at a position on the −Y-axis side from the support portion 52 of the third member 50 of the mounting table 38, and the tip of the second rod 84 is RO. It abuts on the end of the membrane element 108 on the −Y axis side (FIG. 11). Then, when hydraulic oil is supplied by a pump (not shown), the first rod 82 extends in the + Y-axis direction together with the second rod 84 from the cylinder 80 (FIG. 12), and the first rod 82 moves to the cylinder 80. After the extension, the second rod 84 extends further in the + Y-axis direction from the first rod 82 (FIG. 13). The RO membrane element 108 is inserted into the pressure vessel 102 along with the extension of the first rod 82 and the second rod 84.

  In addition, the cylinder 80 of the multistage hydraulic cylinder 78 (which may be the third member 50) includes a winding mechanism (not shown) of a wire (not shown) and an encoder (not shown) that converts the wire (not shown) feed amount into data. ) Is attached. The tip of the wire (not shown) is attached to the tip of the second rod 84. The encoder (not shown) is configured to output information on the amount of wire (not shown) to be fed to the control unit 36. As a result, the control unit 36 can hold information on the amount of feeding (not shown) of the wire (not shown) when the multistage hydraulic cylinder 78 is most contracted and information on the current amount of feeding that has been most extended. Information on the feeding amount can also be acquired. Therefore, the control unit 36 can control the multistage hydraulic cylinder 78 which is the driving unit of the third embodiment in the same manner as the driving units 58 and 72 of the first and second embodiments.

  With such a configuration, the RO membrane element 108 can be pushed deeper into the pressure vessel 102 than the drive units 58 and 72 according to the first and second embodiments. Therefore, the situation where the RO membrane element 108 pushed in first is pushed by the RO membrane element 108 pushed in later is reduced. For this reason, even when the loading number of the RO membrane element 108 increases, it is possible to suppress an increase in the frictional resistance during pressing according to the loading number of the RO membrane element 108. Further, when the rod 56 is contracted, the first rod 82 and the second rod 84 are accommodated in the cylinder 80, and the length of the multistage hydraulic cylinder 78 in the longitudinal direction (Y-axis direction) is shortened. The occupied area of the apparatus 10 can be reduced. Furthermore, since the actual feed amount of the second rod 84 can be detected by an encoder (not shown), the RO membrane element 108 can be reliably inserted and taken out later.

  FIG. 14 shows a process of taking out the RO membrane element using the connecting means of the first embodiment. The reverse osmosis membrane element exchanging device 10 of the present embodiment not only inserts the RO membrane element 108 into the pressure vessel 102 but also replaces the used RO membrane element 108 accommodated in the pressure vessel 102 with the first to third embodiments. It can take out from the pressure vessel 102 using the drive means of embodiment. In this case, the connecting means 86 is disposed at the tip of the rod 56 described above (the second rod 84 can be applied similarly to the rod 56). The connecting means 86 is an elastic member having a hollow inside, and the hollow inside is connected to the injection tube 88. Then, when air pressure or hydraulic pressure is applied to the inside of the connecting means 86 through the injection pipe 88, the connecting means 86 expands, and the outer wall of the connecting means 86 is crimped to the inner wall of the center pipe 110. Therefore, the rod 56 can be connected to the center pipe 110 by the pressure-bonding force (friction force) of the connecting means 86 to the center pipe 110.

  The connecting means 86 has an outer diameter before application of air pressure or hydraulic pressure that is smaller than the inner diameter of the center pipe 110 so that it can be inserted into the center pipe 110, and air pressure or hydraulic pressure is not inserted into the center pipe 110. When applied, the outer diameter is larger than the inner diameter of the center pipe 110 so that it can contact the inner wall of the center pipe 110. The injection pipe 88 is connected to a compressor (not shown) that supplies air or liquid at a constant pressure, and the controller 36 can control the driving and stopping of the compressor (not shown).

  The process of taking out the RO membrane element 108 from the pressure vessel 102 using the connecting means 86 is as follows. First, as shown in the upper part of FIG. 14, the control unit 36 extends the rod 56 in the + Y-axis direction, and inserts the connecting means 86 before the air pressure or hydraulic pressure is applied into the central pipe 110. Next, as shown in the middle stage of FIG. 14, a compressor (not shown) is driven by the control unit 36, and a liquid such as air or oil is supplied into the connecting means 86 at a constant pressure, thereby connecting the connecting means 86. Inflate. As a result, the outer wall of the connecting means 86 is crimped to the inner wall of the center pipe 110, and the rod 56 and the center pipe 110 are coupled by the crimping force (friction force). Then, as shown in the lower part of FIG. 14, the control unit 36 performs control to pull the rod 56 in the −Y axis direction in a state where the connecting means 86 is crimped to the center pipe 110. Then, due to the frictional force between the connecting means 86 and the central pipe 110, the RO membrane element 108 is pulled in the −Y-axis direction together with the connecting means 86 and taken out from the pressure vessel 102, and the support portion 52 (FIG. 4 etc.) of the mounting table 38. See).

  Note that when the control unit 36 stops driving the compressor (not shown), the air pressure or the hydraulic pressure to the connecting means 86 is released, the pressure bonding between the connecting means 86 and the central pipe 110 is released, and the rod 56 is further removed. By moving in the Y-axis direction, the rod 56 can be pulled out from the RO membrane element 108 placed on the placement portion 38. However, in consideration of safety when the mounting table 38 is moved by the stacker crane 12, it is desirable that the control unit 36 moves the mounting unit 38 to the preparation area 122.

  FIG. 15 shows a schematic view when the RO membrane element is taken out using the connecting means of the second embodiment, FIG. 16 shows a cross-sectional view taken along the line AA of FIG. 15, FIG. FIG. 18 is a cross-sectional view taken along the line -B, FIG. 18 is a view as viewed in the direction of arrow C in FIG. 15, shows the time of passing through the engaging portion of the connecting means, and FIG. The arrangement when the connecting means rotates after the connecting means passes through the engaging portion and the RO membrane element is taken out is shown.

  As shown in FIG. 15, the RO membrane element 108 is connected through a joint 118 in the pressure vessel 102 (not shown in FIG. 15). The joint 118 is a hollow member that can be fitted into a hollow pipe, and connects adjacent hollow pipes. In the present embodiment, the RO membrane element 108 is taken out together with the joint 118 using the connecting means 90 attached to the tip (contact plate 56 a) of the rod 56 and the protrusion 120 provided on the joint 118.

  As shown in FIG. 15, the connecting means 90 is a cylindrical member designed so that its outer shape is smaller than the inner diameter of the joint 118, and is attached to the tip of the rod 56 so as to be coaxial with the rod 56. . Further, in the connecting means 90, a groove 92 having a longitudinal direction in the Y-axis direction is arranged on the outer periphery of the connecting means 90 so as to be four times symmetrical about the central axis of the connecting means 90. And as shown in FIG. 16, the convex part 94 engaged with the protrusion part 120 is arrange | positioned in the position between the adjacent groove | channels 92 of the connection means 90. As shown in FIG.

  On the other hand, as shown in FIG. 17, a protrusion 120 protruding from the inner wall is disposed on the inner wall of the joint 118. The projection 120 is designed to have a longitudinal direction in the Y-axis direction, the width narrower than the width of the groove 92, and a height shorter than the depth of the groove 92, similar to the groove 92. Is arranged so as to be four-fold symmetric about the center. In this embodiment, the rod 56 has an outer diameter smaller than the inner diameter of the center pipe 110, and is designed so that the rod 56 does not protrude from the groove 92 when viewed from the direction shown in FIG. It shall be. Here, the rod 56 has a configuration capable of rotating around the central axis in the longitudinal direction, and this rotation control can be performed by the control unit 36. Accordingly, as shown in FIG. 18, when the rotation angle of the rod 56 is adjusted so that the protrusion 120 and the groove 92 face each other, the protrusion 120 and the connecting means 90 do not interfere with each other. The means 90 can pass through the protrusion 120. As shown in FIG. 19, when the rotation angle of the rod 56 is adjusted so that the protrusion 120 and the protrusion 94 face each other, the protrusion 94 and the protrusion 120 engage (contact).

  The process of taking out the RO membrane element 108 using the connecting means 90 and the protrusion 120 is as follows. First, the control unit 36 moves the rod 56 with the connecting means 90 attached to the tip in the + Y-axis direction, and inserts the connecting means 90 and the rod 56 into the center pipe 110. At this time, the rotation angle of the rod 56 is adjusted by the controller 36 so that the arrangement of the connecting means 90 and the protrusion 120 is the arrangement shown in FIG. Then, the rod 56 is further extended to the back side of the center pipe 110, and the rod 56 is extended until the connecting means 90 completely passes through the protrusion 120 of the joint 118. And the control part 36 performs the control which rotates the rod 56 so that arrangement | positioning of the connection means 90 and the projection part 120 becomes arrangement | positioning of FIG. 19, and draws out the rod 56 to -Y-axis direction.

  As a result, the convex portion 94 of the connecting means 90 engages (contacts) with the protruding portion 120, and the connecting means 90 pulls the protruding portion 120 in the -Y-axis direction. Therefore, the RO membrane element 108 arranged on the −Y axis side from the connecting means 90 is pulled in the −Y axis direction together with the joint 118, taken out from the pressure vessel 102, and placed on the support portion 52 of the placement table 38. When the frictional force between the RO membrane element 108 disposed on the + Y-axis side of the connecting means 90 and the joint 118 is smaller than the frictional force between the RO membrane element 108 and the pressure vessel 102, the RO membrane element 108 And the joint 118 are disconnected, and the RO membrane element 108 remains in the pressure vessel 102.

  Also in this embodiment, after the RO membrane element 108 is removed from the pressure vessel 102 and placed on the mounting table 38, the rod 56 is rotated so that the arrangement of the connecting means 90 and the protrusion 120 is the arrangement shown in FIG. It is possible to remove the rod 56 and the connecting means 90 from the RO membrane element 108 by further moving the rod 56 to the −Y axis side. However, in consideration of the above-described safety, it is desirable that the control unit 36 moves the placement unit to the preparation area 122. In addition, although the groove | channel 92 and the projection part 120 which are arrange | positioned at the connection means 90 are each arrange | positioned four, each should just be one or more, and although it is 4 times symmetrical, it becomes another rotational symmetry. An arrangement may be used, and an arrangement without rotational symmetry may be employed.

  The removal process of the RO membrane element 108 by the reverse osmosis membrane element exchange apparatus 10 of the present embodiment using the connecting means 86 of the first embodiment or the connecting means 90 of the second embodiment is as follows. First, the state of the reverse osmosis membrane element exchange device 10 at the time of start-up is the same as that of the above-described RO membrane element 108 insertion process, but the above-mentioned connecting means 86 or connecting means 90 is connected to the rod 56 arranged on the mounting table 38. Install. Then, the mounting table 38 is arranged at a position facing the opening 104 of the pressure vessel 102 to be taken out as in the RO membrane element 108 insertion step described above. Then, the RO membrane element 108 is taken out from the pressure vessel 102 using the connecting means 86 or the connecting means 90 described above, the mounting table 38 is moved to the preparation area 122, and an operator is mounted on the mounting table 38 using a lift or the like. The used RO membrane element 108 is taken out. As described above, since the plurality of RO membrane elements 108 are accommodated in the pressure vessel 102, the above-described steps are repeated until all the RO membrane elements 108 are taken out.

  As described above, the reverse osmosis membrane element exchanging apparatus 10 according to the present embodiment can quickly and safely remove the RO membrane element 108 from the reverse osmosis membrane module 100 in the same manner as the RO membrane element 108 insertion step. it can. Therefore, the RO membrane element 108 in the pressure vessel 102 is replaced with a new RO membrane element 108 by performing the RO membrane element 108 removal step and the RO membrane element 108 insertion step. can do.

  FIG. 20 shows the loading means of the first embodiment, FIG. 21 shows the loading means of the second embodiment, and FIG. 22 shows the loading means of the third embodiment. As shown in FIG. 20, the loading means of the first embodiment arranges a belt conveyor 96 with the carry-out direction horizontally oriented at a portion where the support portion 52 of the third member 50 is arranged, and on the belt conveyor 96. A plurality of RO membrane elements 108 are arranged in the arrangement. The RO membrane element 108 that faces the multistage hydraulic cylinder 78 that is the driving means from the + Y-axis direction is pushed out in the + Y-axis direction and inserted into the pressure vessel 102 by extending the multistage hydraulic cylinder 78 in the + Y-axis direction. The Once the multistage hydraulic cylinder 78 is contracted, the belt conveyor 96 is driven to transport the new RO membrane element 108 to the multistage hydraulic cylinder 78 from the + Y-axis direction. The RO membrane element 108 can be continuously inserted into the pressure vessel 102 by repeating this process.

  As shown in FIG. 21, the loading means of the second embodiment is arranged at a portion where the support portion 52 of the third member 50 is arranged, and stands upright so that the multistage cartridge 98 can move in the vertical direction. It has the structure made to do. The surface of each cartridge 98 that faces the Y axis is opened, the surface of the cartridge 98 that faces the + Y axis faces the pressure vessel 102, and the surface that faces the −Y axis faces the multistage hydraulic cylinder 78. Yes. Each cartridge 98 is provided with an RO membrane element 108. In the above configuration, the RO membrane element 108 arranged in the lowermost cartridge 98 is opposed to the multistage hydraulic cylinder 78, and the RO membrane element 108 is pushed into the pressure vessel 102 by the multistage hydraulic cylinder 78. Then, once the multistage hydraulic cylinder 78 is contracted, the upper cartridge 98 is lowered by one stage so that the next RO membrane element 108 is opposed to the multistage hydraulic cylinder 78, and the above-described pushing process and the cartridge 98 are lowered by one stage. Repeat the process.

  The loading means of the third embodiment shown in FIG. 22 is the same as the loading means of the second embodiment, but the moving direction of the cartridge 98 is opposite to that of the second embodiment. By the loading means of the first to third embodiments, the RO membrane element 108 can be continuously inserted into the pressure vessel 102 in the reverse osmosis membrane element exchange device 10 of the present embodiment, and the processing speed can be improved. Can do. In addition, the drive means can use not only the multistage hydraulic cylinder 78 of the third embodiment but also the drive means 58 of the first embodiment and the drive means 72 of the second embodiment.

10 ......... Reverse osmosis membrane element exchange device, 12 ......... Stacker crane, 14 ......... Frame, 16 ......... Rail, 18 ......... Running wheel, 20 ...... Running motor, 22 ... Base, 24 ......... Rolling roller, 26 ......... Chain, 28 ......... Elevating motor, 30 ......... Insulation trolley, 32 ......... Guide rail, 34 ......... Rolling roller, 36 ......... Control , 38... Mounting table 40... First member 42... Ball screw 44 44 Motor 46 46 Second member 50 Ball screw 50 3 member, 50a... Internal space, 50b... Slit, 52... Support, 52a ... Rolling roller, 56 ... Rod, 56a ... Contact plate, 58 ... Drive means 60... Drive gear 62... Driven gear 64 64 Chain 66 ...... Slider, 68 ... Slide guide, 70 ... Drive motor, 72 ... Drive means, 74 ... Ball screw, 76 ... Slider, 78 ... Multistage hydraulic cylinder, 80 ... Cylinder, 82 ......... first rod, 84 ......... second rod, 86 ......... connecting means, 88 ......... injection tube, 90 ......... connecting means, 92 ......... groove, 94 ......... convex , 96 ......... Belt conveyor, 98 ......... Cartridge, 100 ......... Reverse osmosis membrane module, 102 ......... Pressure vessel, 104 ......... Opening, 106 ......... Frame, 108 ......... RO membrane Element, 110 ......... Center pipe, 112 ......... Reverse osmosis membrane, 114 ......... Mesh spacer, 116 ......... Channel material, 118 ......... Joint, 120 ...... Protrusion, 122 ......... Preparation area.

Claims (8)

By providing a plurality of pressure vessels that accommodate reverse osmosis membrane elements wound with a reverse osmosis membrane, and bundling them so that the openings of the pressure vessels into which the reverse osmosis membrane elements are inserted are oriented in the same direction. A reverse osmosis membrane element exchange device for exchanging the reverse osmosis membrane element from a reverse osmosis membrane module in which a plurality of openings are arranged on the same surface,
The reverse osmosis membrane element is placed with the end of the reverse osmosis membrane element facing in the direction of pushing the reverse osmosis membrane element from the opening into the pressure vessel. A mounting table;
First moving means for moving the mounting table in a first direction that is perpendicular to the pushing direction and horizontal ;
Second moving means for moving the mounting table in a second direction perpendicular to the pushing direction and the first direction;
By moving the rod facing the opening to the pressure vessel side, the reverse osmosis membrane element placed on the mounting table is pushed into the pressure vessel and connected to the reverse osmosis membrane element accommodated in the pressure vessel Drive means for removing the reverse osmosis membrane element from the pressure vessel by moving a rod connected via the means in a direction away from the pressure vessel;
The amount of movement of the first moving means and the second moving means is controlled to drive the driving means with the reverse osmosis membrane element arranged on the mounting table facing one of the plurality of openings. possess and a control unit,
The first moving means includes
A rail extending in the first direction;
A frame portion that is arranged on the rail and stands on the table and the second moving means and that runs on the rail; and
A rolling roller arranged at the top of the frame,
A guide rail sandwiched from the pushing direction by the upper part of the frame part and the rolling roller and extending in the first direction;
A reverse osmosis membrane element exchanging device characterized by comprising: In the table above,
Third moving means capable of adjusting the position of the reverse osmosis membrane element mounted on the mounting table in the first direction and the second direction, and the relative position between the mounting table and the opening is the opening. 2. The reverse osmosis membrane element exchange device according to claim 1, further comprising a relative position adjusting means for adjusting using a target disposed in the section. The reverse osmosis membrane element has a central pipe through which the filtered water filtered by the reverse osmosis membrane is discharged around the reverse osmosis membrane,
The rod can be inserted through the center pipe,
The connecting means includes
A hollow elastic member that is arranged at the tip of the rod and that can be inserted into the center pipe, expands by air pressure or hydraulic pressure, and is crimped to the center pipe to connect the center pipe and the rod. ,
The controller is
It is possible to control the pulling out of the rod from the pressure vessel through the driving means, and the connecting means connects the central pipe and the rod, and then performs the control of pulling out the rod from the pressure vessel. The reverse osmosis membrane element exchange device according to claim 1 or 2, wherein the reverse osmosis membrane element can be taken out from the pressure vessel. In the pressure vessel, a plurality of the reverse osmosis membrane elements can be inserted and the reverse osmosis membrane elements are connected in series in the pressure vessel,
The reverse osmosis membrane element has a central pipe through which the filtered water filtered by the reverse osmosis membrane is discharged around the reverse osmosis membrane,
The reverse osmosis membrane elements adjacent in the pressure vessel are connected by connecting the central pipes adjacent to each other by a hollow joint that can be fitted into the central pipe,
A protrusion protruding from the inner wall is disposed on the inner wall of the joint,
The rod can be inserted through the center pipe,
The connecting means includes
It has a shape that is arranged at the tip of the rod and engages with the protrusion,
The controller is
Control of pulling out the rod from the pressure vessel is possible via the driving means, and the reverse osmosis membrane is controlled by pulling out the rod from the pressure vessel after engaging the connecting means with the engaging portion. The reverse osmosis membrane element exchange device according to claim 1 or 2, wherein an element can be taken out from the pressure vessel together with the joint. The driving means includes
5. The reverse according to claim 1, wherein the reverse is a multistage hydraulic cylinder having a telescopic structure with the rod as a tip and capable of extending and contracting in the insertion direction of the reverse osmosis membrane element. Osmosis membrane element exchange device.   6. The reverse osmosis membrane element exchange device according to claim 5, wherein an encoder for calculating a feed amount of the rod is arranged in the driving means. In the table above,
Loading means loaded with a plurality of the reverse osmosis membrane elements is disposed,
The loading means includes
The new reverse osmosis membrane element can be placed on the mounting table after the drive means has inserted the reverse osmosis membrane element mounted on the mounting table into the pressure vessel. 7. The reverse osmosis membrane element exchange device according to any one of items 1 to 6.   The reverse osmosis membrane element exchange device according to any one of claims 1 to 7, wherein the reverse osmosis membrane element exchange device is disposed at a position facing a plurality of the openings of the reverse osmosis membrane module. apparatus.