Water treatment apparatus

Abstract

To provide a water treatment apparatus capable of comparatively easily executing pump replacement work.SOLUTION: The water treatment apparatus comprises: an RO module for separating raw water into RO water and RO drain; an RO pump for supplying the raw water to the RO module; an RO tank for accumulating the RO water; a water pump for pumping the RO water from the RO water tank; and a frame body surrounding the periphery of the RO module, the RO pump, the RO water tank, and the water pump. The water pump is installed on a first slidable floor retractable with respect to a first external surface of the frame body.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a water treatment device for producing artificial dialysis water or the like used in dialysis treatment. [Background technology]

[0002] A conventional apparatus for producing water for artificial dialysis will be described with reference to Fig. 11. As shown in Fig. 11, water for artificial dialysis is typically produced from raw water, such as tap water or well water.

[0003] First, raw water is stored in a raw water tank 51. A heater 51h is provided inside the raw water tank 51, and the temperature of the raw water is generally heated to 25° C. If the temperature of the raw water remains lower than 25° C., silica components and the like in the raw water may precipitate in the subsequent equipment, causing problems.

[0004] The raw water heated to 25°C is then sent to a pre-treatment unit 53 by a raw water pump 52. The pre-treatment unit 53 has a raw water filter 53a, a water softener 53b, and a carbon filter 53c, in that order. The raw water filter 53a mainly filters out impurities (garbage) in the raw water, and the water softener 53b mainly filters out calcium ions (Ca 2+ ) and magnesium ions (Mg 2+ ), and the carbon filter 53c mainly removes residual chlorine (total chlorine: free chlorine + combined chlorine) in the raw water.

[0005] The raw water that has been pretreated in the pretreatment unit 53 is sent to an RO unit 54 (reverse osmosis membrane treatment device). The RO unit 54 uses an RO pump 54p to supply the pretreated raw water to an RO module 54m. The RO module 54m removes all inorganic ions contained in the raw water. The RO water (about 50-75% of the raw water) that has been treated in the RO module 54m is sent to an RO water supply unit 55, and a portion of the RO wastewater generated by the treatment in the RO module 54m (also called "circulating water") is re-introduced into the RO module 54m via the RO pump 54p, and the other portion (about 25-50% of the raw water, also called "concentrated water") is treated as wastewater.

[0006] The RO water supply unit 55 has an RO water tank 55t in which RO water is stored. An ultraviolet sterilizer 55u is provided inside the RO water tank 55t so that the RO water can be subjected to UV irradiation treatment. The RO water tank 55t is also provided with an air filter 55f to remove bacteria and debris suspended in the outside air that flows in depending on changes in the level of the RO water in the RO water tank 55t.

[0007] The RO water stored in the RO water tank 55t is sent to the UF 57 (ultrafilter, also called "ultrafiltration membrane") via the water supply pump 56. The UF 57 removes biological impurities from the RO water. The RO water from which the biological impurities have been removed by the UF 57 is sent to various medical devices for dialysis treatment as dialysis water. Typically, in these medical devices, the dialysis water is heated to around 36°C and used for various dialysis treatments. The dialysis water is then used in the medical devices, and the unused portion returns to the UF 58 (ultrafilter, also called "ultrafiltration membrane") and is then returned to the RO water tank 55t.

[0008] The dialysis water production apparatus as shown in FIG. 11 and described above has already been put into practical use and is used to stably produce dialysis water for dialysis treatment.

[0009] Additionally, Patent Document 1 proposes a method and purification device that can efficiently remove bacterial-derived DNA fragments from water for artificial dialysis using simple equipment and operations. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Patent Publication No. 2010-279461 Summary of the Invention [Problem to be solved by the invention]

[0011] The present applicant is a manufacturer that produces the artificial dialysis water producing apparatus shown in Fig. 11. The present inventor has been earnestly studying ways to further improve the artificial dialysis water producing apparatus shown in Fig. 11.

[0012] A schematic plan view of the artificial dialysis water producing apparatus shown in Fig. 11 is shown in Fig. 12. The upper side of Fig. 12 corresponds to the front side of the apparatus, and the lower side of Fig. 12 corresponds to the back side of the apparatus. As shown in Fig. 12, all of the main components of the apparatus (raw water tank 51, raw water pump 52, raw water filter 53a, water softener 53b, carbon filter 53c, RO module 54m (two RO modules 54m connected in series (arranged in parallel)), RO pump 54p, RO water tank 55t, and water supply pump 56) are surrounded by a frame body 60.

[0013] During normal operation, corresponding panel plates are attached to the front, left, right, back and top of the frame 60, which, in addition to improving the design, reduces noise from the pump, etc. On the other hand, during equipment maintenance, the left, right and back panel plates are removable.

[0014] As shown in FIG. 12, the three pumps (one raw water pump 52 and two water supply pumps 56) are collectively arranged on the back side of the device and fixed onto a floor board 61 fixed to a frame body 60.

[0015] 13 to 15 show the vicinity of the three pumps 52, 56. As shown in Fig. 13 to 15, the space around the pumps 52, 56 is relatively narrow. For this reason, for example, in order to replace each pump 52, 56, it is not easy to remove (attach) the pumps 52, 56 from the connecting piping and further remove (attach) the pumps 52, 56 from the floor board 61.

[0016] The present invention has been made based on the above findings, and an object of the present invention is to provide a water treatment device in which the pump replacement work can be carried out relatively easily. [Means for solving the problem]

[0017] The present invention is a water treatment device comprising an RO module that separates raw water into RO water and RO wastewater, an RO pump that supplies the raw water to the RO module, an RO water tank that stores the RO water, a water supply pump that sends out the RO water from the RO tank, and a frame body that surrounds the RO module, the RO pump, the RO water tank, and the water supply pump, wherein the water supply pump is installed on a first slidable floor that can be recessed into and out of a first outer surface of the frame body.

[0018] According to the present invention, the water supply pump is mounted on a first slidable floor that can be recessed into and out of a first outer surface (e.g., a part of the back surface) of the frame body. Therefore, when performing maintenance work (e.g., replacement work) on the water supply pump, the maintenance work can be more easily performed by pulling out the first slidable floor from the first outer surface of the frame body.

[0019] In the present invention, it is preferable that the RO module is installed on a second slidable floor that can appear and disappear from a second outer surface different from the first outer surface of the frame body.

[0020] According to this, since the RO module is installed on a second slidable floor that can be recessed into and out of a second outer surface (e.g., another part of the back surface) different from the first outer surface of the frame body, when performing maintenance work (e.g., replacement work) on the RO module, the maintenance work can be more easily performed by pulling out the second slidable floor from the second outer surface of the frame body.

[0021] In addition, the water treatment device of the present invention further includes a raw water tank for temporarily storing the raw water, a water softener for softening the raw water, and a raw water pump for supplying the raw water from the raw water tank to the water softener, and it is preferable that the raw water pump is also installed on the first slidable floor.

[0022] According to this, even when performing maintenance work (e.g., replacement work) on the raw water pump, the maintenance work can be performed more easily by pulling out the first slidable floor from the first outer surface of the frame body.

[0023] Further, it is further preferable that the water softener is installed on a third slidable floor that can be recessed into and out of a third outer surface of the frame body that is different from the first outer surface.

[0024] Alternatively, it is further preferable that the water softener is installed on a third slidable floor that can appear and disappear from a third outer surface different from the first outer surface and the second outer surface of the frame body.

[0025] According to this, when performing maintenance work (e.g., replacement work) on the water softener, the maintenance work can be performed more easily by pulling out the third slidable floor from the third outer surface (e.g., the right or left surface) of the frame body. Effect of the Invention

[0026] According to the present invention, when performing maintenance work (eg, replacement work) on the water pump, the maintenance work can be performed more easily by pulling out the first slidable floor from the first outer surface of the frame body. [Brief description of the drawings]

[0027] [Figure 1] 1 is a schematic explanatory diagram of a water treatment device according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a schematic front view of the water treatment device of FIG. [Diagram 3] 2 is a schematic perspective view of the back side of the water treatment device of FIG. 1. [Figure 4] FIG. 4 is a schematic perspective view corresponding to FIG. 3 with the right and rear panel plates removed. [Diagram 5] FIG. 5 is a schematic perspective view corresponding to FIG. 4, showing a state in which each sliding movable floor is pulled out. [Figure 6] FIG. 2 is a schematic plan view of the water treatment device of FIG. [Figure 7] 6 is an enlarged perspective view of the vicinity of the pump in FIG. 5 (a perspective view obliquely viewed from above as viewed from the rear surface side). [Figure 8] 6 is an enlarged perspective view of the vicinity of the pump in FIG. 5 (a perspective view obliquely from the left as viewed from the back side). [Figure 9] 6 is an enlarged perspective view of the vicinity of the pump in FIG. 5 (a perspective view obliquely from the right as viewed from the back side). [Figure 10] Photographs of an example of a sliding floor, with FIG. 10(a) showing it in the retracted position and FIG. 10(b) showing it in the extended position. [Figure 11] FIG. 1 is a schematic explanatory diagram of a conventional artificial dialysis water producing apparatus. [Figure 12] FIG. 12 is a schematic plan view of the water treatment device of FIG. [Figure 13] 12 is an enlarged perspective view of the vicinity of the pump of the water treatment device of FIG. 11 (a perspective view obliquely viewed from above as viewed from the rear surface side). [Figure 14] 12 is an enlarged perspective view of the vicinity of the pump of the water treatment device of FIG. 11 (a perspective view obliquely from the left as viewed from the rear side). [Figure 15]12 is an enlarged perspective view of the vicinity of the pump of the water treatment device of FIG. 11 (a perspective view obliquely from the right as viewed from the rear surface side). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0029] (Basic configuration) Fig. 1 is a schematic diagram of a water treatment device according to one embodiment of the present invention. As shown in Fig. 1, a water treatment device 10 of this embodiment includes a raw water tank 11 in which raw water is stored and a heater 11h for heating the raw water is provided, a pretreatment unit 13 for pretreatment of the raw water whose temperature has been adjusted in the raw water tank 11, and an RO module 14m (two RO modules 14m are connected in series (arranged in parallel)) for separating the raw water pretreated by the pretreatment unit 13 into RO water and RO wastewater using a reverse osmosis membrane (RO membrane).

[0030] In this embodiment, tap water is used as the raw water. The raw water, which is tap water, is stored in a raw water tank 11. The raw water tank 11 is provided with a raw water tank temperature sensor 11s.

[0031] The raw water whose temperature has been adjusted to 25°C to 33°C is sent to a pre-treatment unit 13 by a raw water pump 12. The pre-treatment unit 13 has a raw water filter 13a, a water softener 13b, and a carbon filter 13c, in that order. The raw water filter 13a is mainly for filtering out impurities (garbage) in the raw water, and the water softener 13b is mainly for filtering out calcium ions (Ca 2+ ) and magnesium ions (Mg 2+ ), and the carbon filter 13c is designed to mainly remove residual chlorine (total chlorine: free chlorine + combined chlorine) in the raw water.

[0032] The raw water that has been pretreated in the pretreatment unit 13 is sent to an RO unit 14 (reverse osmosis membrane treatment device). The RO unit 14 uses an RO pump 14p to supply the raw water that has been pretreated to an RO module 14m. The RO module 14m is configured to remove all inorganic ions contained in the raw water. The RO water (about 50 to 75% of the raw water) that has been treated in the RO module 14m is sent to an RO water supply unit 15, and a portion of the RO wastewater generated by the treatment in the RO module 14m (also called "circulating water") is re-introduced into the RO module 14m via the RO pump 14p, and the other portion (about 25 to 50% of the raw water, also called "concentrated water") is treated as wastewater.

[0033] The RO water supply unit 15 has an RO water tank 15t in which RO water is stored. An ultraviolet sterilizer 15u is provided inside the RO water tank 15t so that the RO water can be irradiated with UV light. The RO water tank 15t is also provided with an air filter 15f to remove bacteria and debris suspended in the outside air that flows in depending on changes in the level of the RO water in the RO water tank 15t.

[0034] The RO water stored in the RO water tank 15t is sent to UF 17 (also called an ultra filter or ultra filtration membrane) via a water supply pump 16 (two water supply pumps 16 are connected in parallel (also arranged in parallel)). The UF 17 is configured to remove biological impurities from the RO water. The RO water from which the biological impurities have been removed by the UF 17 is sent as dialysis water to various medical devices (not shown) for dialysis treatment. Typically, in these medical devices, the dialysis water is used for various dialysis treatments. The dialysis water is used in the medical devices, and the unused portion is returned to UF 18 (also called an ultra filter or ultra filtration membrane), and then returned to the RO water tank 15t.

[0035] (Layout) Fig. 2 is a schematic front view of the water treatment device 10 in Fig. 1, and Fig. 3 is a schematic perspective view of the back side of the water treatment device 10 in Fig. 1 (e.g., height 1800 mm, width 1270 mm, depth 1000 mm). Fig. 4 is a schematic perspective view corresponding to Fig. 3 with the right and back panel plates 22 removed.

[0036] As shown in Figures 2 to 4, all of the main components of the water treatment device 10 (raw water tank 11, raw water pump 12, raw water filter 13a, water softener 13b, carbon filter 13c, RO module 14m (two RO modules 14m connected in series (arranged in parallel)), RO pump 14p, RO water tank 15t, and water supply pump 16) are surrounded by a frame body 20.

[0037] During normal operation, corresponding panel plates 22 are attached to the front, left, right, back and top of the frame body 20, which not only improves design but also reduces noise from the pump, etc. On the other hand, during equipment maintenance, the panel plates 22 on the left, right and back are designed to be removed.

[0038] As shown in Figure 4, the three pumps (one raw water pump 12 and two water supply pumps 16) are collectively arranged on the right side when viewed from the back side of the back surface of the device, and are installed on a first slidable floor 31 (e.g., width 530 mm x depth 410 mm) that can be recessed into and out of the first outer surface (right side when viewed from the back side of the back surface) of the frame body 20.

[0039] In addition, an RO module 14m (two RO modules 14m arranged in parallel) is arranged on the left side when viewed from the back side of the back surface of the device, and is installed on a second slidable floor 32 that can be retracted into and out of the second outer surface of the frame body 20 (the left side when viewed from the back side of the back surface).

[0040] Furthermore, the water softener 13b is disposed on the right side as viewed from the front of the apparatus, and is installed on a third slidable floor 33 which can be recessed into and out of the third outer surface of the frame 20 (the right side as viewed from the front).

[0041] Fig. 5 is a schematic perspective view corresponding to Fig. 4 in a state in which the sliding movable floors 31 to 33 are pulled out. Fig. 6 is a schematic plan view of the water treatment device 10 in Fig. 1.

[0042] Figures 7 to 9 show the vicinity of the three pumps 12, 16 when the sliding movable floor 31 is pulled out. When the sliding movable floor 31 is stored, the space around the pumps 12, 16 is relatively narrow, as is generally the case with Figures 13 to 15. In contrast, when the sliding movable floor 31 is pulled out, the space around the pumps 12, 16 is relatively wide, as shown in Figures 7 to 9. For this reason, for example, in order to replace each pump 12, 16, it becomes relatively easy to remove (attach) the pumps 12, 16 from the connecting piping and further remove (attach) the pumps 12, 16 from the sliding movable floor 31.

[0043] Similarly, when the sliding movable floor 32 is pulled out, the space around the RO module 14m becomes relatively large, as shown in Fig. 5. Therefore, in order to replace the RO module 14m, it is relatively easy to remove (attach) the RO module 14m from the connecting pipes and further remove (attach) the RO module 14m from the sliding movable floor 32.

[0044] Similarly, when the sliding movable floor 33 is pulled out, the space around the water softener 13b becomes relatively large, as shown in Fig. 5. Therefore, in order to replace the water softener 13b, it is relatively easy to remove (attach) the water softener 13b from the connecting pipes and further remove (attach) the water softener 13b from the sliding movable floor 33.

[0045] Each of the slidable floors 31 to 33 may be configured, for example, by a slide rail 5301-12 manufactured by Sugatsune Kogyo Co., Ltd., a slide rail 5301-14 manufactured by Sugatsune Kogyo Co., Ltd., a slide rail 5301-16 manufactured by Sugatsune Kogyo Co., Ltd., etc. Fig. 10 is a photograph of an example of each of the slidable floors 31 to 33, Fig. 10(a) shows the stored state, and Fig. 10(b) shows the pulled-out state.

[0046] Next, the operation of the water treatment device 10 of this embodiment as described above will be described.

[0047] (During normal operation) First, raw water is stored in a raw water tank 11. A heater 11h is provided inside the raw water tank 11, and heats the temperature of the raw water to about 25°C.

[0048] Raw water heated to about 25° C. is sent to a pretreatment unit 13 by a raw water pump 12. In the pretreatment unit 13, a raw water filter 13a mainly filters and removes impurities (garbage) in the raw water, and a water softener 13b mainly removes calcium ions (Ca 2+ ) and magnesium ions (Mg 2+ ), and the carbon filter 13c mainly removes residual chlorine (total chlorine: free chlorine + combined chlorine) in the raw water.

[0049] The raw water that has been pretreated in the pretreatment unit 13 is sent to an RO unit 14 (reverse osmosis membrane treatment device). The RO unit 14 uses an RO pump 14p to supply the pretreated raw water to an RO module 14m. The RO module 14m performs treatment to remove all inorganic ions contained in the raw water, and the RO water that has been treated in the RO module 14m (about 50 to 75% of the raw water) is sent to an RO water supply unit 15.

[0050] Meanwhile, a portion of the RO wastewater generated by the treatment in the RO module 14m (also called "circulating water") is re-introduced into the RO module 14m via the RO pump 14p, and the other portion (approximately 25 to 50% of the raw water, also called "concentrated water") is treated as wastewater.

[0051] In the RO water supply unit 15, the RO water is stored in an RO water tank 15t. If necessary, UV irradiation treatment is performed by an ultraviolet sterilization device 15u.

[0052] The RO water stored in the RO water tank 15t is then sent to UF 17 (ultra filter) via the water supply pump 16. The UF 17 removes biological impurities from the RO water. The RO water from which biological impurities have been removed by the UF 17 is sent to various medical devices (not shown) for dialysis treatment, for example, as dialysis water. The dialysis water is used in the medical devices, and the unused portion returns to UF 18 (ultra filter), and is then returned to the RO water tank 15t.

[0053] (During maintenance) During maintenance of the device, the right and rear panel plates 22 are removed.

[0054] During maintenance of the pumps 12, 16, the first sliding movable floor 31 is pulled out and the work is carried out while securing space around the pumps 12, 16. After the work is completed, the first sliding movable floor 31 is returned to the stored state.

[0055] During maintenance of the RO module 14m, the second sliding movable floor 32 is pulled out and the work is carried out while securing space around the RO module 14m. After the work is completed, the second sliding movable floor 32 is returned to the stored state.

[0056] During maintenance of the water softener 13b, the third sliding movable floor 33 is pulled out and the work is carried out while securing space around the water softener 13b. After the work is completed, the third sliding movable floor 32 is returned to the stored state.

[0057] After all maintenance work has been completed, the right and rear panel plates 22 are reinstalled.

[0058] In addition, since the RO pump 14p in this embodiment is disposed on the front side (see FIG. 6), maintenance work on the RO pump 14p can be performed relatively easily from the front side. (However, the RO pump 14p may also be installed on a slidable floor that can be inserted and removed from the outer surface (e.g., the front side) of the frame 20.)

[0059] (Summary of effects) As described above, according to the water treatment device 10 of this embodiment, the two water supply pumps 16 are mounted on the first slidable floor 31 which can be inserted and removed from the first outer surface (e.g., the right side when viewed from the back surface of the back surface) of the frame body 20. Therefore, when performing maintenance work (e.g., replacement work) on the two water supply pumps 16, the first slidable floor 31 can be pulled out from the first outer surface of the frame body 20, making it easier to perform the maintenance work.

[0060] The water treatment device 10 of this embodiment further includes a raw water tank 11 for temporarily storing raw water, a water softener 13b for softening the raw water, and a raw water pump 12 for supplying raw water from the raw water tank 11 to the water softener 13b, and the raw water pump 12 is also installed on the first slidable floor 31. As a result, even when performing maintenance work (e.g., replacement work) on the raw water pump 12, the first slidable floor 31 can be pulled out from the first outer side surface of the frame body 20, making it easier to perform the maintenance work.

[0061] Furthermore, according to the water treatment device 10 of this embodiment, the RO module 14m is installed on the second slidable floor 32 that can be inserted and removed from a second outer side (e.g., the left side when viewed from the back side of the back surface) that is different from the first outer side of the frame body 20. As a result, when performing maintenance work (e.g., replacement work) on the RO module 14m, the second slidable floor 32 can be pulled out from the second outer side of the frame body 20, making it easier to perform the maintenance work.

[0062] Furthermore, according to the water treatment device 10 of this embodiment, the water softener 13b is installed on the third slidable floor 33 that can be inserted into and removed from a third outer surface (the right surface as viewed from the front) that is different from the first and second outer surfaces of the frame body 20. As a result, when performing maintenance work (e.g., replacement work) on the water softener 13b, the third slidable floor 33 can be pulled out from the third outer surface of the frame body 20, making it easier to perform the maintenance work. [Explanation of symbols]

[0063] 10 Water treatment equipment 11 Raw Water Tank 11h Heater 11s Raw water tank temperature sensor 12 Raw water pump 13 Pretreatment Unit 13a Raw water filter 13b Water softener 13c Carbon Filter 14 RO unit 14m RO module 14p RO pump 15 RO water supply unit 15f Air Filter 15t RO water tank 15u UV sterilizer 16 Water Pump 17 Ultrafiltration membrane for feeding 18 Return ultrafiltration membrane 20 Frame 22 Panel Board 31 First sliding floor 32 Second sliding movable floor 33 3rd sliding movable floor 51 Raw Water Tank 51h Heater for heating 52 Raw water pump 53 Pretreatment Unit 53a Raw water filter 53b Water softener 53c Carbon filter 54 RO unit 54m RO module 54p RO pump 55 RO water supply unit 55f Air Filter 55t RO water tank 55u UV sterilizer 56 Water Pump 57 Ultrafiltration membrane for feed 58 Return ultrafiltration membrane 60 Frame 61 Floorboards

Claims

1. An RO module that separates raw water into RO water and RO wastewater; an RO pump that supplies the raw water to the RO module; An RO water tank for storing the RO water; A water pump that sends out the RO water from the RO water tank; A frame body surrounding the RO module, the RO pump, the RO water tank, and the water supply pump; Equipped with The water pump is installed on a first slidable floor that can be inserted into and removed from the first outer surface of the frame body. A water treatment device comprising:

2. The RO module is installed on a second slidable floor that can be inserted into and removed from a second outer surface of the frame body that is different from the first outer surface of the frame body. The water treatment device according to claim 1 .

3. A raw water tank for temporarily storing the raw water; A water softening device that softens the raw water; a raw water pump that supplies the raw water from the raw water tank to the water softener; Further comprising: The raw water pump is also mounted on the first slidable floor. The water treatment device according to claim 1 .

4. The water softener is installed on a third slidable floor that can be inserted into and removed from a third outer surface of the frame body that is different from the first outer surface of the frame body. The water treatment device according to claim 3 .

5. A raw water tank for temporarily storing the raw water; A water softening device that softens the raw water; a raw water pump that supplies the raw water from the raw water tank to the water softener; Further comprising: The raw water pump is also mounted on the first slidable floor. The water treatment device according to claim 2 .

6. The water softener is installed on a third slidable floor that can be inserted into and removed from a third outer surface of the frame body, the third outer surface being different from the first outer surface and the second outer surface. The water treatment device according to claim 5 .

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