JPH0444233Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a water filtration device that removes impurities from water through an ion exchange resin layer.

[Prior art] Regarding water filtration equipment, for example, Japanese Patent Application Laid-open No. 55-67384
As disclosed in the above publication, a partition plate is attached to divide the inside of a treatment tank having a closed structure into upper and lower parts, and a treatment chamber is formed below the partition plate and a water collection chamber is formed above the partition plate. and a water filtration device comprising a plurality of furnace filtration elements suspended on the partition plate, a treated water supply port opened to the treatment chamber, and a treated water outlet opened to the water collection chamber. was publicly known.

[Problems to be solved by the invention] However, in this known water filtration device, the filtration element is connected to an element receiver fixed to a partition plate so as to communicate the water collection chamber and the treatment chamber, and an element receiver at one end. A perforated cylinder attached to and detachable from the perforated cylinder, a blind plate fixed to the lower end of the perforated cylinder, a material support such as a wire mesh wrapped around the outer circumference of the perforated cylinder, and a material support such as a wire mesh wrapped around the outer circumference of the perforated cylinder. It is composed of an intertwined body of fibrous and granular ion exchange resin pre-coated on the outer periphery, so in the event of a drop in performance, the porous cylindrical body can be removed from the element receiver and the entire set replaced with a new one. For this reason, excessive elements were consumed and it was uneconomical.

Therefore, instead of such a pre-coated filter element, for example, as disclosed in Japanese Utility Model Application Publication No. 60-74789, an ion exchange resin is used in the gap formed by arranging porous cylinders in a double-tube shape. Attempts have been made to install a so-called filled-type over-element filled with.

However, if you install a filling type over-element,
Although this method has the economical effect of only having to replace the ion exchange resin with a new one, it is difficult to perform the replacement automatically without human intervention. This problem was particularly noticeable when a large number of overlapping elements were installed.

Focusing on these issues, and as a result of intensive study from various angles to solve this problem, the present invention was developed by installing a pair of partition plates to divide the interior of the processing tank into three chambers in the vertical direction, and to control the upper material supply. They discovered that it is sufficient to form a water collection chamber between the discharge chamber and the lower processing chamber, and to suspend the overflow element through both partition plates.

[Means for Solving the Problems] That is, the water filtration device according to the present invention includes a pair of partition plates installed above and below to vertically divide the inside of the processing tank having a closed structure, and A material supply/discharge port opened to a material supply/discharge chamber formed on the partition plate, a water supply/discharge port opened to the processing chamber formed below the partition plate, and a material supply/discharge port formed between the two partition plates. a treated water outlet opened to a water collection chamber, and a plurality of over-elements suspended between the partition plates, the over-element communicating the material supply/discharge chamber with the processing chamber. A first porous cylindrical body that penetrates both the partition plates and is fixed to both the partition plates, and a plug body that is screwed to the lower end of the first porous cylindrical body to form a material filling part. a second porous cylinder disposed within the first porous cylinder and having a lower end fixed to the plug; a blind plate fixed to the upper end of the second porous cylinder; and a blind plate inserted into the material filling part. It is characterized by being composed of a bottomed porous retainer and an ion exchange resin filled in the porous retainer.

[Example] Hereinafter, examples will be described based on the drawings.
In FIG. 1 which is a front view and FIG. 2 which is a Z-Z cross-sectional view of FIG. 1, 1 is a processing tank, 2 is an upper partition plate, 3 is a lower partition plate, 4 is a processing chamber, and 5 is a collection Water chamber, 6
7 indicates the passing element, 7 indicates the material supply and discharge chamber,
The processing tank 1 is provided in a closed structure.

Specifically, the processing tank 1 is constructed by sandwiching the upper partition plate 2 between the flange 9 of the processing tank main body 8 and the flange 11 of the lid body 10 and fixing them with bolts to form a material supply/discharge chamber above the upper partition plate 2. At the same time, a lower partition plate 3 is attached to form a water collection chamber 5 between both partition plates 2 and 3.
and a processing chamber 4 is formed below the lower partition plate 3. In addition, the processing chamber 4 has a water supply and discharge port 12,
In addition, the water collection chamber 5 has a treated water outlet 13, and further includes:
Material supply and discharge ports 14 are opened in each of the material supply and discharge chambers 7, and the lower partition plate 3 is fixed to a seat 31 fixed to the processing tank main body 8 with a gasket interposed therebetween. 2 and 3 over element 6
is at stake.

FIG. 3 shows an enlarged view of how the over-element 6 is suspended, and the over-element 6 has two partition plates 2,
3 and welded to both partition plates 2 and 3, and a plug body 16 screwed to the lower end of the first porous cylinder 15 to form a material filling part 17. A second porous cylinder 18 disposed inside the first porous cylinder 15 and whose lower end is welded to the stopper 16 , a blind plate 19 welded to the upper end of the second porous cylinder 18 , and a material filling part 17 A bottomed porous retainer 20 inserted into the
and a fibrous ion exchange resin 21 (generally called ion exchange fiber) filled in this retainer 20.

As shown in FIG. 2, the filter elements 6 are arranged at high density so as to be located on large and small circles concentric with the processing tank body 8, and the porous retainers 20 are arranged in a high density manner as shown in FIG. The porous bottom 22 is inserted so as to face downward as shown in FIG. The fibrous ion exchange resin 21 has a diameter of 5 to 300 μm and a length of 0.1 to 1 mm.
The content is 0.05 to 0.6 g/cm ³ .

According to this passing device, the material supply/discharge port 14
When the valve attached to the pipe connected to
In this case, the impurities contained in the water to be treated that is supplied from the water supply port 12 into the processing chamber 4 are removed by the fibrous ion exchange resin 21 of the filter element 6. be done.

The water to be treated flows into the material filling part 17 through the holes 23 of the first porous cylinder 15 and the holes 24 of the stopper 16 located in the treatment chamber 4, and then flows through the holes 25 of the second porous cylinder 18. flows into the cylinder, and then both cylinders 1
5, 18 through the holes 23, 25 at the upper end of the water collection chamber 5.
flows within. In this way, the ion exchange resin 21 flows twice across the part filled with it, so that it can be passed through the water well.
3 is closed, and water for material removal is supplied into the processing chamber 4 from the water supply/discharge port 12. Then, the material removal water flows into the material filling section 17 from the holes 23 of the first porous cylinder 15 and the holes 24 of the stopper 16 located in the processing chamber 4, in the same way as the water to be treated is supplied. , material filling part 17
The material flows upward into the material supply and discharge chamber 7.
For this reason, the ion exchange resin 21 of the material filling part 17
is transported into the material supply/discharge chamber 7 along with this water, and can therefore be transported outside the room via the material supply/discharge port 14.

In this way, the ion exchange resin 21 with degraded performance can be easily taken out, but in this case, it is preferable to diffuse the air from the aeration tube 26, and during aeration, pressurized air is supplied from the tube 27. be done. The aeration pipe 20 is fixed to the processing tank body 8 by suitable means.

It should be noted that the pipes connected to the water supply/discharge port 12 are used to supply water for extracting material from the water supply/discharge port 12, to supply water to be treated, and to discharge water as will be described later. The extraction water supply pipe, the water supply pipe to be treated, and the water discharge pipe branched from the water supply pipe are switched by valve control.

Then, from the material filling part 17, the ion exchange resin 2
1, water in which recycled ion exchange resin (a fibrous ion exchange resin whose superperformance has been increased through regeneration treatment) is dispersed from the material supply/discharge port 14 to the material supply/discharge chamber 7. supply Then, this water flows from the material supply/discharge chamber 7 into the material filling section 17, so that the recycled ion exchange resin can be filled here. Note that this water is transferred to the first porous cylinder 1.
5 through the hole 23 and the hole 24 of the stopper 16 into the processing chamber 4.
and is discharged outside from the water supply/discharge port 12.

As described above, according to the present filtration device, a water collection chamber 5 is formed between the upper material supply/discharge chamber 7 and the lower processing chamber 4, and the structure is such that excess water can be discharged from this chamber 5. Therefore, loading, unloading, and filling can be performed by simple valve control (supply/discharge switching control), and since the upper end of the material filling section 17 is open to the wide material supply/discharge chamber 7, ions can be Filling and removal of the exchange resin can be performed satisfactorily. In particular, it is possible to almost completely prevent any residue from being left upon removal.

An embodiment of the present invention has been described below. However, in the present invention, the ion exchange resin may be in the form of powder or granules other than fibers, and these may be individually Alternatively, suitable materials may be mixed and used, and further, they may be mixed with a resin in the form of fibers, powder, or particles that do not have an ion exchange group.

Further, although it is preferable to provide the hole 24 in the plug body 16, it is not necessary to provide the hole 24. The diffuser pipe 26 may also be provided not only in a linear shape but also in a ring shape. Note that the first and second porous cylinders 15 and 18 can be provided not only in a circular shape but also in other shapes, and correspondingly, the porous retainer 20 can also be provided in various shapes. In Figure 1, 28 is a lug, 29,
Reference numeral 30 indicates a water impingement device.

[Effects of the invention] As described above, according to the invention, it is possible to carry out loading, unloading and filling by simple valve control (supply/discharge switching control), and also to perform filling and unloading satisfactorily. In addition, the overlayer elements can be installed in a high density in the processing chamber, and a water filtration device with a large overlayer area (surface area of the overlayer) can be obtained.

[Brief explanation of the drawing]

Figure 1 is a front view of the water filtration device, Figure 2 is a Z-Z sectional view of Figure 1, Figure 3 is an enlarged view of the suspension part of the filter element, and Figure 4 is a perspective view of the porous retainer. . 1... Treatment tank, 2... Top partition plate, 3... Top partition plate, 4... Processing chamber, 5... Water collection chamber, 6... Excess element, 7... Material supply/discharge room, 12... Water supply/discharge ports 12, 13... Treated water discharge port, 14... Furnace material supply/discharge port, 15... First porous cylinder body, 16... Plug body, 17
...Material filling part, 18...Fourth porous cylinder, 19...
... blind plate, 20 ... porous retainer, 21 ... ion exchange resin, 22 ... porous bottom.

Claims (1)

[Scope of utility model registration request] a pair of partition plates installed above and below to vertically divide the interior of the processing tank having a closed structure; a material supply/discharge port formed on the upper partition plate and opened to a material supply/discharge chamber; A water supply/discharge port opened to a treatment chamber formed below the partition plate at the lower side, a treated water discharge port opened to a water collection chamber formed between both the partition plates, and a water supply/discharge port opened to the water collection chamber formed between the two partition plates, and a first perforated tube, comprising a plurality of perforated elements, the perforated cylinder passing through both the partition plates and being fixed to both the partition plates so as to communicate the material supply/discharge chamber and the processing chamber; a plug screwed onto the lower end of the first porous cylindrical body, and a second porous cylindrical body disposed within the first porous cylindrical body so as to form a material-filled portion and whose lower end is fixed to the plug. Consisting of a porous cylinder, a blind plate fixed to the upper end of the second porous cylinder, a bottomed porous retainer inserted into the material filling part, and an ion exchange resin filled in the porous retainer. A water filter device characterized by: