JP2013052316A - Exchange device for reverse osmosis membrane element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an exchange device for a reverse osmosis membrane element, which can automate charge operation of a reverse osmosis membrane element for a pressure container and maintain operation safety.SOLUTION: The exchange device for a reverse osmosis membrane element includes a mounting platform 12 on which a roll-shaped RO membrane element 80 is mounted so as to be laid down in the longitudinal direction, a lifting means for raising and lowering the mounting platform 12, a parallel moving means for moving the mounting platform 12 parallel to the mounting direction of the RO membrane element 80, and a pushing means 15 for pushing the RO membrane element 80 mounted on the mounting platform 12 into the pressure container (a vessel 92), and the pushing means 15 has the pushing length equal to or more than the longitudinal direction length of the RO membrane element 80.

Description

  The present invention relates to a device used for replacement of a reverse osmosis membrane element, and more particularly to a reverse osmosis membrane element exchange device suitable for loading a reverse osmosis membrane element into a long vessel.

  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 loaded from the other opening.

  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 permeate 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 loaded in the vessel are replaced, there are the following problems. In recent years, seawater desalination facilities have been increasing the diameter of the reverse osmosis membrane element and increasing the number of loaded vessels 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 loading the reverse osmosis membrane element with respect to the vessel is increased, and there is a problem that the loading operation and the extracting operation are difficult by human power.

  On the other hand, Patent Document 2 discloses means for reducing sliding resistance when a reverse osmosis membrane element is loaded. 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.

  In addition, Patent Document 3 discloses a means for automating the replacement work of the reverse osmosis membrane element with a view to reducing the work burden on the operator. The means disclosed in Patent Document 3 is to arrange a vessel in a vertical direction in a seawater desalination facility and load a reverse osmosis membrane element to the vessel by a lifting method or a pushing method. 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.

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

  Certainly, if the replacement work is performed by an automated means as disclosed in Patent Document 3, it is conceivable that the work burden on the worker is reduced and the work efficiency is improved. However, in the means disclosed in Patent Document 3, since the vessel is arranged vertically, the load applied to the lifting or pushing increases as the number of reverse osmosis membrane elements 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.

  Accordingly, an object of the present invention is to provide a reverse osmosis membrane element exchange device capable of automating the loading operation of the reverse osmosis membrane element to the vessel and maintaining the safety of the operation.

  A reverse osmosis membrane element exchanging device according to the present invention for achieving the above object includes a mounting table for mounting a reverse osmosis membrane element formed in a roll shape in the longitudinal direction, and raising and lowering the mounting table. Elevating means, parallel moving means for moving the placing table parallel to the placement direction of the reverse osmosis membrane element, and pushing means for pushing the reverse osmosis membrane element placed on the placing table into a pressure vessel. The pushing means is configured to have a pushing amount equal to or longer than the length in the longitudinal direction of the reverse osmosis membrane element.

  Moreover, in the reverse osmosis membrane element exchange apparatus having the above-described features, it is preferable that the reverse osmosis membrane element exchange device is provided with a moving unit that enables movement while the reverse osmosis membrane element is placed on the mounting table.

  By providing such a configuration, even when the distance between the place where the reverse osmosis membrane element is stored and the place where the pressure vessel where the reverse osmosis membrane element is loaded is far away, the transport operation of the reverse osmosis membrane element can be performed. It becomes easy.

  In the reverse osmosis membrane element exchanging device having the above-described features, it is desirable that the mounting table includes a frictional resistance reducing means in the support portion of the reverse osmosis membrane element.

  According to such a feature, the frictional resistance when pushing out the reverse osmosis membrane element mounted on the support portion of the mounting table is reduced. For this reason, the driving force of the pushing means can be reduced. In addition, damage to the outer periphery of the reverse osmosis membrane element due to frictional resistance can be suppressed.

In the reverse osmosis membrane element exchanging device having the above-described characteristics, it is preferable that the reverse osmosis membrane element exchange device includes a reaction force receiver that suppresses the movement of the mounting table due to the reaction force when the reverse osmosis membrane element is pushed into the pressure vessel. .
By having such a feature, there is no possibility that the reverse osmosis membrane element exchange device may fall over due to the reaction force or the reverse osmosis membrane element may not be pushed in during the loading operation of the reverse osmosis membrane element.

Further, in the reverse osmosis membrane element exchanging device having the above-described characteristics, the pushing means supports the contact rod that contacts the rear end portion of the reverse osmosis membrane element and the contact rod, A slide plate that slides toward the pressure vessel along the base, and a drive mechanism is provided on the mounting table located under the reverse osmosis membrane element.
By having such a feature, the overall length of the mounting table can be shortened, and the overall size of the reverse osmosis membrane element exchange apparatus can be reduced.

In the reverse osmosis membrane element exchanging device having the above-described characteristics, the pushing means may be a hydraulic cylinder that presses the rear end of the reverse osmosis membrane element.
By having such a feature, it is possible to obtain a large pushing force with a simple configuration as compared with the mechanical pushing means.

Furthermore, in the reverse osmosis membrane element exchanging device having the above-described characteristics, the hydraulic cylinder may be a multistage hydraulic cylinder having a telescopic structure as a rod.
With such a feature, the pushing distance of the reverse osmosis membrane element can be increased.

  According to the reverse osmosis membrane element exchanging device having the above-described characteristics, it is possible to automate the loading operation of the reverse osmosis membrane element to the pressure vessel that has conventionally required the most labor. In addition, since the loading operation is performed with the reverse osmosis membrane element laid in the longitudinal direction, safety can be improved as compared with the conventional technique in which the reverse osmosis membrane element is pushed (pulled up) vertically.

It is a figure which shows the side surface structure of the reverse osmosis membrane element exchange apparatus which concerns on 1st Embodiment. It is a figure showing the front composition of the reverse osmosis membrane element exchange device concerning a 1st embodiment. It is a figure showing the plane composition of the reverse osmosis membrane element exchange device concerning a 1st embodiment. It is a perspective view of the reverse osmosis membrane element exchange device concerning a 1st embodiment. It is a figure which shows the structure of the mounting base in the reverse osmosis membrane element exchange apparatus which concerns on 1st Embodiment, and shows the example at the time of employ | adopting a chain drive system as an extrusion means. It is a figure which shows the structure of the mounting base in the reverse osmosis membrane element exchange apparatus which concerns on 1st Embodiment, and shows the example at the time of employ | adopting a linear guide system for an extrusion means. It is a perspective view which shows the structure of the vessel holding jig as a deformation | transformation form of reaction force receiving. It is a perspective view which shows the structure of the connection rod for connecting a vessel holding jig and a mounting base. It is a perspective view which shows the usage type of a vessel holding jig. It is a perspective view which shows the structure of the floor surface slip prevention jig as a deformation | transformation form of a reaction force receiver. It is a figure which shows the internal structure of the leg part in a floor surface slip prevention jig, (A) is a figure at the time of steady state, (B) is a figure which shows the time of a lock | rock. It is a perspective view which shows the structure of the reverse osmosis membrane element which performs the loading to the pressure vessel by the reverse osmosis membrane element exchange apparatus which concerns on embodiment. It is a perspective view which shows the mode of the loading preparation of the reverse osmosis membrane element by the reverse osmosis membrane element exchange apparatus which concerns on 1st Embodiment. It is a perspective view which shows the mode of the loading state of the reverse osmosis membrane element by the reverse osmosis membrane element exchange apparatus which concerns on 1st Embodiment. It is a figure which shows the structure of the hydraulic cylinder used for the reverse osmosis membrane element replacement | exchange apparatus which concerns on 2nd Embodiment, (A) shows the state which shortened the rod, (B) shows the state which extended the rod, respectively. It is a perspective view which shows the mode of the loading preparation of the reverse osmosis membrane element by the reverse osmosis membrane element exchange apparatus which concerns on 2nd Embodiment. It is a perspective view which shows the state which extended the 1st rod among a mode that a reverse osmosis membrane element replacement | exchange apparatus which concerns on 2nd Embodiment loads a reverse osmosis membrane element. It is a perspective view which shows the state which extended the 2nd rod among a mode that a reverse osmosis membrane element replacement | exchange apparatus which concerns on 2nd Embodiment loads with a reverse osmosis membrane element.

Hereinafter, embodiments according to the reverse osmosis element exchange device of the present invention will be described in detail with reference to the drawings.
First, a reverse osmosis membrane element exchange device according to a first embodiment will be described with reference to FIGS. 1 to 6. 1 is a diagram showing a side configuration of the reverse osmosis membrane element exchange device according to the first embodiment, FIG. 2 is a diagram showing the same front configuration, FIG. 3 is a diagram showing the same planar configuration, FIG. 4 is a perspective view of the same. FIG. 5 and FIG. 6 are each a diagram showing a configuration example of a mounting table, which is a partial configuration of the reverse osmosis membrane element exchange device. A reverse osmosis membrane element exchanging device (hereinafter simply referred to as an exchanging device 10) according to the present embodiment is configured based on a mounting table 12 and a base 40 that supports the mounting table 12.

The mounting table 12 is a table for mounting a reverse osmosis membrane element (hereinafter simply referred to as RO (Reverse Osmosis) membrane element 80).
As shown in FIG. 12, the RO membrane element 80 used in the present embodiment is a mesh for allowing the osmotic membrane 84 formed in a bag shape and the raw water (salt-containing water) to pass through the outer periphery of the center pipe 82. The spacer 88 is wound in a roll shape so as to form a layer. Inside the osmotic membrane 84 formed in a bag shape, a flow path material 86 is disposed as a spacer for allowing permeated water to pass therethrough. In the RO membrane element 80 having such a configuration, raw water (salt-containing water) flows from the opening in one end plate 90 (supply water side) into the mesh spacer 88 disposed between the osmosis membranes 84. By applying a pressure higher than the osmotic pressure to the raw water flowing into the mesh spacer 88 portion, the water in the raw water permeates the osmotic membrane 84 and flows into the channel material 86 inside the osmotic membrane 84 formed in a bag shape. . The water (permeated water) that has flowed into the flow path member 86 flows into the center pipe 82 and is discharged from a hole (hole connected to the center pipe 82) provided at the center of the other end plate 90 (permeate water side). . The concentrated water remaining in the mesh spacer 88 portion without being permeated is discharged from the mesh spacer 88 portion on the other end plate side.

  The mounting table 12 on which the RO membrane element 80 having such a configuration is mounted includes at least a support portion 14 and a pushing means 15. Since the RO membrane element 80 used in the embodiment has a cylindrical shape as shown in FIG. 12, the RO membrane element 80 is placed on the mounting table 12 in a horizontal state, that is, in a state of being laid in the longitudinal direction. This is because, by adopting such a mounting form, it is possible to load the vessel (pressure vessel) 92 (see FIGS. 13 and 14) arranged in a horizontal state.

  For this reason, the support portion 14 is disposed along the mounting direction of the RO membrane element 80. In the case of this embodiment, the support part 14 is provided in the width direction edge part side of the mounting base 12 in the shape of a line of 2 rows along a longitudinal direction. In order to stably support the columnar RO membrane element 80, at least two support points are required in a cross-sectional view. On the other hand, by increasing the support points, it is possible to stabilize the support state of the RO membrane element 80, but the sliding resistance (friction resistance) when pushing the RO membrane element 80 increases. . For this reason, the effect of both reduction of frictional resistance and stabilization of a support state can be acquired by making the support part 14 into line form of 2 rows.

  Here, the support portion 14 of the present embodiment is provided with frictional resistance reducing means 14a. The frictional resistance reducing means 14a may be any means that can reduce the frictional resistance when the RO membrane element 80 is pushed out toward the vessel 92, and the configuration thereof is not limited. For example, in the example shown in FIGS. 1 to 4, a plurality of rollers are arranged at the tip of the support portion 14 as the frictional resistance reducing means 14a. This is because the frictional resistance between the support portion 14 and the RO membrane element 80 can be reduced if the rolling direction of the roller and the extrusion direction of the RO membrane element 80 are matched. Further, even when a resin rail is arranged at the tip of the support portion 14 instead of the roller, the body as the frictional resistance reducing means 14a is formed. This is because a resin having good slipperiness (for example, polyethylene resin) can reduce the frictional resistance when the RO membrane element 80 is extruded.

  In the case of this embodiment, the pushing means 15 is comprised on the basis of the contact | abutting rod 18 and the slide board 16. FIG. The contact rod 18 is in contact with the rear end portion of the RO membrane element 80 placed on the support portion 14 and has a role of pushing the RO membrane element 80 into the vessel 92 by pushing out by the slide plate 16 described later in detail. Bear. In the present embodiment, a contact plate 18 a for distributing the pressing force on the RO membrane element 80 is provided at the tip of the contact rod 18. As a specific configuration, the plane area of the contact plate 18a may be larger than the plane area of the tip portion of the contact bar 18 and smaller than the plane area of the end plate 90 of the RO membrane element 80.

  The slide plate 16 is a plate piece that supports the rear end side of the above-described contact rod 18 and slides along a groove provided along the longitudinal direction of the mounting table 12. The sliding of the slide plate 16 is realized by a drive mechanism provided in the lower portion of the slide plate 16, that is, in the mounting table 12. The drive mechanism method is not particularly limited, and examples thereof include a chain drive method as shown in FIG. 5 and a linear guide method as shown in FIG.

  As shown in FIG. 5, the chain drive system basically includes a chain 26 that is wound around the drive gear 20 and the driven gear 22, and a slider 28 that is fixed to the chain 26. The slide plate 16 is fixed on the slider 28 so that the slide plate 16 is slid as the drive gear 20 rotates. Here, a slide guide 24 for improving the stability of the slider 28 is preferably provided below the slider 28. The drive gear 20 is provided with drive means (not shown) such as a motor.

  The linear guide system is basically composed of a ball screw 34 spanned between two bearings 30 and 32 and a slider 36 that moves on the ball screw 34 according to the rotation of the ball screw 34. As described above, by arranging the slide plate 16 on the slider 36, the slide plate 16 slides as the ball screw 34 rotates. A driving means 38 for rotating the ball screw 34 is provided on either one of the bearings.

  Thus, by providing the inside of the mounting table 12 with the drive mechanism of the pushing means 15, it is not necessary to arrange the drive mechanism on the extended line of the mounting space of the RO membrane element 80. For this reason, the mounting table 12 can be shortened, that is, the exchange device 10 can be reduced in size.

  In this embodiment, as shown in FIGS. 13 and 14, a reaction force receiver 94 that engages with the tip of the vessel 92 is provided on the tip side of the mounting table 12. By hooking the reaction force receiver 94 on the tip of the vessel 92 and loading the RO membrane element in this state, the exchange device 10 is separated from the opening of the vessel 92 by the reaction force when pushing out the RO membrane element 80. Can be avoided. The form of the reaction force receiver 94 is not particularly limited. For example, the reaction force receiving form may be a jig as shown in FIG. 7 (hereinafter referred to as a vessel gripping jig 94a). That is, one end of the two arcuate jig main bodies 95a and 95b is connected by a hinge 95c, and a lock mechanism 95d for holding and fixing is provided at the other end. When a vessel gripping jig 94a as shown in FIG. 7 is used as a reaction force receiver, a connecting rod 96 as shown in FIG. 8 is preferably provided between the vessel holding jig 94a and the mounting table 12. . As for the connection between the vessel gripping jig 94a and the connecting rod 96, various forms can be taken, and examples thereof include the following.

  That is, a recess (arc-shaped recess 95e in the example shown in FIG. 7) having a width slightly larger than the diameter of the connecting rod 96 is formed on the outer periphery of the jig body 95b of the vessel gripping jig 94a. On the other hand, the connecting rod 96 is provided with a pair of flanges 96a. The arrangement width of the paired flanges 96a is made slightly wider than the thickness of the jig body 95b. By adding such a configuration to the vessel gripping jig 94a and the connecting rod 96, the connecting rod 96 is fitted into the arc-shaped concave portion 95e of the jig main body 95b, and the axial direction (the pushing direction of the RO membrane element 80) is caused by the flange 96a. Can be prevented (see FIG. 9). In the present invention, the connecting rod 96 itself can be applied as a reaction force receiver. Specifically, the flange 96a of the connecting rod 96 may be hooked on a frame (shelf: not shown) for fixing the vessel 92 itself. This is because even with such a configuration, an effect as a reaction force receiver can be obtained.

  The reaction force receiver used in the embodiment is not only for fixing the mounting table 12 to the vessel 92 but also for obtaining the effect of preventing the exchange device 10 itself from moving away from the vessel 92. Can be applied. Specifically, even if a thing like the floor slip prevention jig 94b shown in FIG. 10 is arranged under the carriage unit 68 of the exchange device 10 described in detail later, this is used as a reaction force receiver. be able to. The floor slip prevention jig 94b is configured based on a jig frame 98a and leg portions 98b. In the embodiment shown in FIG. 10, the jig frame 98a has a U shape, and the leg portions 98b are provided at both ends of the jig frame 98a having a U shape. With such a configuration, when the floor slip prevention jig 94 b is placed on the floor surface, an inclined surface is formed on the jig frame 98 a, and it is easy to dispose in the gap formed at the lower portion of the carriage unit 68.

In the example shown in FIG. 10, the leg portion 98b has a floor stopper mechanism. Specifically, an elastic sheet 98d such as a rubber plate is provided on the lower surface of the leg portion 98b, and the stopper lever 98c is lowered to pull up the central portion of the elastic sheet 98d, thereby sucking the seating surface (floor surface). (See FIGS. 11A and 11B). Thereby, the slip prevention effect with respect to a floor surface can be heightened.
In addition, it is good also as a structure which presses the elastic body sheet | seat 98d against a floor surface by raising the stopper lever 98c, and obtains a slip prevention effect.

  The base 40 plays a role of supporting the mounting table 12 whose details are described above. The base 40 is configured based on a vertical frame 42, a horizontal frame 54, and a carriage unit 68. The vertical frame 42 is a support frame that is erected in the vertical direction with a carriage 68, which will be described in detail later, as a base. The vertical frame 42 is provided with elevating means for elevating a horizontal frame 54, the details of which will be described later, and a handle 50 used when an operator moves the exchange device 10.

  The lifting means may be of a linear guide type, for example. That is, it is only necessary to have a ball screw 44 arranged along the longitudinal direction (vertical direction) of the vertical frame 42 and a slider 48 that can be moved up and down as the ball screw 44 rotates. In the lifting and lowering means having such a basic configuration, a ball motor 44 has a bearing 46 at one end (the upper end in the present embodiment) and a driving motor 46 at the other end (the lower end in the present embodiment). Etc. may be provided. With this configuration, the slider 48 can be moved up and down along the vertical frame 42 by driving the motor 46 and rotating the ball screw 44. An operation panel (not shown) is provided on the side of the vertical frame 42 where the handle 50 is disposed. The operation panel is a control unit for outputting control signals for performing the raising / lowering operation of the mounting table 12, horizontal movement, and pushing operation by the pushing means 15 to a motor or the like that is each driving unit. In the present embodiment, slide rails 52 are provided at both ends in the width direction of the vertical frame 42 so as to stabilize the lifting operation of the mounting table 12.

  The horizontal frame 54 is a frame that supports the mounting table 12 described above, and extends in the horizontal direction with a horizontal frame base 56 connected to the slider 48 provided on the vertical frame 42 described above as a base point. Specifically, the horizontal frame 54 is a fork-shaped frame that extends from the horizontal frame base 56 in a direction away from the vertical frame 42. The horizontal frame 54 is provided with a linear guide 58, a handle 66, an operation panel 64, a manual handle 62, and the like.

  The linear guide 58 is an example of parallel moving means for moving the mounting table 12 described above in parallel with the mounting direction of the RO membrane element 80. In the present embodiment, the linear guides 58 are respectively provided on a plurality of (two in the embodiment) fork portions constituting the horizontal frame 54. By setting it as such a structure, the stability at the time of moving a heavy article and a long thing can be improved. In the case of such a configuration, each motor for driving the ball screw constituting each linear guide 58 is electrically connected so as to be synchronously controlled. This is because the amount of movement of the slider 60 that moves horizontally on each ball screw becomes equal by adopting such a configuration. The mounting table 12 described above is mounted and fixed on the slider 60 of the linear guide 58 provided on the horizontal frame 54. By setting it as such a structure, the mounting base 12 can be moved in parallel with the mounting direction of the RO membrane element 80. FIG.

  The handle 50 is a bar handle (pipe) provided on the front end side of the fork portion constituting the horizontal frame 54. The arrangement form of the handle 50 is such that the tips of a plurality of fork portions constituting the horizontal frame 54 are connected. By providing the handle 50 having such a configuration, the exchange device 10 can be moved even from the front end side of the horizontal frame 54.

  The operation panel 64 is a control unit for outputting control signals for performing the raising / lowering operation of the mounting table 12, the horizontal movement, and the pushing operation by the pushing means 15 to a motor or the like as each driving unit. By disposing the operation panel 64 on the front end side of the horizontal frame 54, it is possible to perform the raising / lowering operation, horizontal movement, and pushing operation of the mounting table 12 even from the front end side of the horizontal frame 54.

  The manual handle 62 is a rotary handle for manually moving the mounting table 12 horizontally. When the mounting table 12 is moved horizontally via the manual handle 62, the manual handle 62 may be rotated. For this reason, it is preferable to use it when finely adjusting the positional deviation from the vessel 92 to be loaded with the RO membrane element 80. This is because in the moving operation based on the control signal, the initial behavior becomes large and fine adjustment of the positional deviation may be difficult.

  The carriage unit 68 is a traveling means for facilitating the movement of the exchange device 10. In order to improve the stability of the exchange device 10, the carriage unit 68 is preferably formed wider than the vertical frame 42 and extends to the side where the horizontal frame 54 extends. The carriage unit 68 is provided with a plurality of (four in this embodiment) wheels 70 and 74 on the surface opposite to the surface on which the vertical frame 42 is erected. When the number of wheels 70 and 74 is four as in the present embodiment, the four wheels 70 and 74 are preferably provided at the four corners when the carriage unit 68 is viewed in plan. By setting it as such a structure, the stability of the exchange apparatus 10 can be improved.

  When the number of wheels 70 and 74 is four, at least two wheels 74 are configured such that a shaft for fixing can be rotated. With this configuration, it is easy to change the traveling direction of the exchange device 10. Further, the at least two wheels 70 are provided with a lock mechanism 72 that stops the rotation of the wheels 70. With such a configuration, the exchange device 10 can be stopped at a predetermined position.

The loading operation of the RO membrane element 80 using the exchange device as described above is performed as follows.
First, the RO membrane element 80 is mounted on the mounting table 12 in the exchange device 10. The RO membrane element 80 may be mounted manually by an operator or an existing clamping device may be used.

  Next, the exchange device 10 on which the RO membrane element 80 is mounted is moved to the vicinity of the opening of the vessel 92 to be loaded with the RO membrane element 80. After the exchanging device 10 is moved to the vicinity of the opening of the vessel 92, the longitudinal center axis of the RO membrane element 80 is set to the center position of the opening of the vessel 92 (longitudinal center axis using the lifting and lowering means and the parallel moving means ). Then, with the mounting table 12 (RO membrane element 80) aligned, the reaction force receiver 94 is hooked on the outer periphery of the opening of the vessel 92 (see FIG. 13).

After positioning and installation of the reaction force receiver 94, the pushing means 15 is operated to push the RO membrane element 80 into the vessel and load it (see FIG. 14).
According to the loading operation of the RO membrane element 80 using such an exchange device 10, the loading of the RO membrane element 80 with the most labor can be automatically performed. For this reason, even when the number of RO membrane elements 80 to be loaded is increased by increasing the length of the vessel 92 or when the diameter of the RO membrane element 80 is increased, the loading operation is facilitated. In addition, since the RO membrane element 80 placed horizontally is loaded into the horizontally disposed vessel 92, unlike the prior art, there is little risk of dropping the RO membrane element 80, and safety during operation. Is expensive.

  Next, 2nd Embodiment which concerns on the exchange apparatus of this invention is described with reference to FIGS. Note that most of the configuration of the exchange apparatus according to this embodiment is the same as that of the exchange apparatus 10 according to the first embodiment described above. Therefore, portions having the same configuration are denoted by reference numerals obtained by adding 100 to the drawings, and detailed description thereof will be omitted.

  The difference between the exchange device 10 according to the first embodiment and the exchange device 110 according to the present embodiment is in the form of pushing means. Specifically, in the exchange device 110 according to the present embodiment, the pushing means is a hydraulic (hydraulic) cylinder 115. Furthermore, in this embodiment, in order to enable the RO membrane element 80 mounted on the mounting table 112 to be pushed deep inside the vessel 92, the cylinder rod is a multi-stage (two in the example shown in FIG. 15). Stage) type hydraulic cylinder 115. The hydraulic cylinder 115 used in the present embodiment is basically configured by a cylinder 115a having an oil chamber (not shown) therein, a first rod 115b that extends due to the inflow of hydraulic oil into the oil chamber, and a second rod 115c. .

  With such a configuration, the RO membrane element 80 can be pushed deeper into the vessel 92 than the exchange device 10 according to the first embodiment. Therefore, the situation where the RO membrane element 80 pushed in first is pushed by the RO membrane element 80 pushed in later is reduced. For this reason, even if it is a case where the loading number of RO membrane element 80 increases, it can suppress that the frictional resistance at the time of pushing increases according to the loading number of RO membrane element.

  In the loading operation of the RO membrane element 80 by the exchange device 110 having such a configuration, the RO membrane element 80 is first mounted on the mounting table 112. Next, the exchange device 110 on which the RO membrane element 80 is mounted is moved to the vicinity of the opening of the vessel 92 to be loaded with the RO membrane element 80. After the exchange device 110 is moved to the vicinity of the opening of the vessel 92, the center position of the tip of the RO membrane element 80 is aligned with the center position of the opening of the vessel 92 using the lifting and lowering means and the parallel moving means. With the mounting table (RO membrane element 80) aligned, the reaction force receiver 94 is hooked on the vessel 92 (see FIG. 16).

  After the positioning and the installation of the reaction force receiver 94 are completed, the first-stage rod (first rod 115b) of the hydraulic cylinder 115 is extended as shown in FIG. By this operation, loading of the RO membrane element 80 into the vessel 92 is completed. Next, as shown in FIG. 18, the second stage rod (second rod 115c) of the hydraulic cylinder 115 is extended. As a result, the RO membrane element 80 can be pushed deep inside the vessel 92.

  Even with the exchange device 110 having such a configuration, it is possible to automate the loading operation of the RO membrane element 80 and improve the safety of the operation. In the above description, the number of rod stages in the hydraulic cylinder is two, but a hydraulic cylinder extending in multiple stages may be used. In addition, when the hydraulic cylinder is used to achieve the same effect as that of the exchange device according to the first embodiment, the hydraulic cylinder may be a simple backward movement type. When a hydraulic cylinder is used as the pushing means, it is necessary to provide a tank for storing the working oil and a pump for pumping the working oil, but compared to a mechanical pushing means. A large pushing force can be obtained with a simple configuration.

DESCRIPTION OF SYMBOLS 10 ......... Change apparatus, 12 ......... Place, 14 ......... Support part, 14a ......... Friction resistance reduction means, 15 ......... Pushing means, 16 ......... Slide plate, 18 ......... Contact Bar, 18a ... Contact plate, 20 ... Drive gear, 22 ... Driven gear, 24 ... Slide guide, 26 ... Chain, 28 ... Slider, 30 ... Bearing, 32 ......... Bearing, 34 ...... Ball screw, 36 ......... Slider, 38 ......... Driving means, 40 ......... Base, 42 ......... Vertical frame, 44 ......... Ball screw, 46 ...... Motor, 48 ......... Slider, 50 ...... Handle, 52 ......... Slide rail, 54 ......... Horizontal frame, 56 ......... Horizontal frame base, 58 ......... Linear guide, 60 ......... Slider, 62 ......... Manual handle, 64 ... Control panel, 66 ... ... Handle, 68 ......... Carriage part, 70 ......... Wheel, 72 ......... Lock mechanism, 74 ......... Wheel, 80 ......... RO membrane element, 82 ......... Center pipe, 84 ......... Osmosis membrane , 86... Channel material, 88... Mesh spacer, 90 ... End plate, 92 ... Vessel, 94.

Claims (7)

A mounting table for mounting a reverse osmosis membrane element formed in a roll shape in a state of being laid in the longitudinal direction;
Elevating means for elevating and lowering the mounting table;
Translation means for moving the mounting table in parallel with the mounting direction of the reverse osmosis membrane element;
A pushing means for pushing the reverse osmosis membrane element placed on the placing table into a pressure vessel;
With
The reverse osmosis membrane element exchanging device characterized in that the pushing means has a pushing amount equal to or longer than the length in the longitudinal direction of the reverse osmosis membrane element.   The reverse osmosis membrane element exchanging device according to claim 1, further comprising moving means that enables movement while the reverse osmosis membrane element is placed on the mounting table.   The reverse osmosis membrane element exchange device according to claim 1 or 2, wherein the mounting table includes a frictional resistance reducing means in a support portion of the reverse osmosis membrane element.   The reverse osmosis device according to any one of claims 1 to 3, further comprising a reaction force receiver that suppresses movement of the mounting table due to a reaction force when the reverse osmosis membrane element is pushed into the pressure vessel. Membrane element changer.   The pushing means is basically composed of a contact rod that contacts the rear end of the reverse osmosis membrane element, and a slide plate that supports the contact rod and slides toward the pressure vessel along the mounting table. The reverse osmosis element exchanging apparatus according to any one of claims 1 to 4, wherein a driving mechanism is provided in the mounting table located under the reverse osmosis membrane element.   The reverse osmosis membrane element according to any one of claims 1 to 4, wherein the pushing means is a hydraulic cylinder that presses a rear end of the reverse osmosis membrane element. The reverse osmosis membrane element according to claim 6, wherein the hydraulic cylinder is a multistage hydraulic cylinder having a telescopic structure as a rod.

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