JPH0417695B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an overuse device using hollow fibers, and particularly to an overuse device in which a hollow fiber cartridge can be easily attached and detached.

(Prior Art) Conventionally, there has been known a filtering device using a hollow fiber cartridge in which the open ends of a large number of hollow fibers each having one end open and the other end fixed together with an adhesive (Japanese Patent Application Laid-Open No. 1983-1999- 149587 etc.). However, in such a filtration device, the inlet for the liquid to be treated and the outlet for the permeated liquid are provided in the casing and the lid, which has a header chamber, so once the inlet and outlet of the device are piped and the device is fixed, It is difficult to replace hollow fiber cartridges. In order to eliminate the above-mentioned drawbacks, the present applicant proposed a hollow fiber cartridge in Utility Model Application No. 56-73501, in which one end of the hollow fiber is closed and the other end is open, and the open end is bundled and fixed with adhesive. We have proposed a filter device that includes a housing having an inlet for a liquid to be treated and an outlet for a permeated liquid, and a lid having a header chamber. Since such a device has an inlet for the liquid to be treated and an outlet for the permeated liquid in the housing,
Even after piping the device, the hollow fiber cartridge can be pulled out to the top of the housing by removing the lid having the header chamber.

(Problems to be Solved by the Invention) In the above-mentioned apparatus, in order to extract the hollow fiber cartridge to the upper part, it is necessary to provide a space at the upper part of the apparatus sufficient to extract the cartridge. However, it is practically difficult to provide such a space in a narrow site. Furthermore, when a cartridge with cake or the like adhered thereto is removed, the permeate side becomes contaminated, and the vicinity of the apparatus is also contaminated.

(Means for Solving the Problems) The present inventors have arrived at the present invention as a result of intensive studies to provide a device that solves the above-mentioned problems. That is, in the present invention, a large number of hollow fibers with their tips sealed are housed in a porous cylindrical body, and the other ends are bundled and fixed with adhesive so that each hollow fiber is open, thereby forming a porous cylindrical body. A hollow fiber cartridge which is integrated with the body and has a cap body having a small diameter protrusion at the tip of the convergence fixing part of the plurality of hollow fibers, and a hollow fiber cartridge having support means for supporting the lower end of the hollow fiber cartridge on the bottom wall. It has a housing for storing the thread cartridge, a treated liquid inlet and a permeated liquid outlet on the side wall, and a permeated liquid outlet (or treated liquid inlet) in the center of the bottom wall.
a lid body provided with a first opening that communicates with the first opening and a second opening that communicates with the inlet of the liquid to be treated (or the outlet of the permeated liquid) at a position apart from the first opening, and the focusing of the hollow fiber cartridge. A small-diameter protrusion provided on the cap body connected to the fixed part is liquid-tightly inserted into a first opening provided on the bottom wall of the lid body,
and an overuse device characterized in that the upper end opening of the housing is liquid-tightly attached to the lid, and the lower end of the hollow fiber cartridge is engaged with support means provided on the bottom wall of the housing. It is.

(Function) In the present invention, by providing the inlet of the liquid to be treated and the outlet of the permeated liquid in the lid, it is easy to attach the device to the piping line, and when replacing the hollow fiber cartridge, the casing and the hollow fiber Since the cartridges are attached and removed in the same direction, only a small amount of space is required for attachment and detachment, and the permeate side is less likely to be contaminated when the hollow fiber cartridge is replaced, which is an excellent effect. In particular, if the inlet of the liquid to be treated and the outlet of the permeated liquid are provided in a straight line (in-line), arrangement of the apparatus and piping will be further facilitated.

(Example) Next, an example of the apparatus of the present invention will be described with reference to the drawings. As shown in FIG. 1, the apparatus of the present invention comprises a hollow fiber cartridge 3, a casing 1 for housing the cartridge, and a lid 2 for attaching the casing. As shown in FIG. 2, the hollow fiber cartridge 3 is constructed by storing a large number of hollow fibers 3' inside a porous cylindrical body 6, and fixing both ends of the hollow fibers 3' together with an adhesive. There is.

The upper ends of the hollow fibers are opened, and the lower ends are closed with adhesive. Further, both ends of the cylindrical body 6 are embedded and fixed in the upper focusing and fixing part 5 and the lower focusing and fixing part 5' of the hollow fibers. The lower ends of many hollow fibers may be bundled and buried in adhesive 5' as shown in Fig. 2 to seal the tip openings, or the lower end openings of many hollow fibers may be sealed one by one with adhesive. A hollow fiber that is closed or bent into a U-shape may be housed inside the cylindrical body. In that case, it is not necessary to bundle and fix the lower ends of the hollow fibers with adhesive. Therefore, as shown in FIG.
does not need to be provided. Further, as shown in FIG. 2, the upper end of the cylindrical body may be embedded and fixed in the hollow fiber convergence fixing part 5, or the hollow fibers may be converged and fixed inside the cylindrical body and integrated with the hollow fibers. . In the former case, the cap body is connected to the focusing and fixing part of the hollow fiber, whereas in the latter case, the cap body is usually connected to the tip of the cylindrical body.

Figure 3 is an example of a hollow fiber cartridge in which a non-self-supporting wire-like material is used as the porous cylindrical body. When such a net-like material is used, a hollow or Core 8
is provided, and the hollow fibers are supported by the core 8. In the hollow fiber cartridge shown in Fig. 3, hollow fibers 3' are wound around the core in a crosswise manner, both ends of which are bundled and fixed with adhesive 5, 5', the upper ends of the hollow fibers are opened, and the lower ends are opened. It's blocked.

When the hollow fiber cartridge 3 is sealed with an O-ring, it is necessary to form an annular groove (not shown) in the small-diameter protrusion 9 provided at the tip of the cap 4 to accommodate the O-ring. In order to ensure a reliable seal, it is preferable to provide a plurality of annular grooves, usually two. In the case of sealing with a flat packing, the above-mentioned annular groove is not necessary.

The casing 1 that houses the hollow fiber cartridge 3 has an opening at its upper end, and a support means 36 for supporting the lower part of the hollow fiber cartridge, a support stand in FIG. 1, at its bottom wall. For example, if a spring is used as the support base, it is advantageous when the hollow fiber cartridge is urged upward and the hollow fiber cartridge and the lid are sealed.

The lid body 2, in which the open end of the housing 1 is liquid-tightly absorbed, is
At the center of its bottom wall is a first port communicating with the permeate outlet 13.
An opening is provided. Further, a second opening is provided spaced apart from the first opening and communicating with the liquid to be treated inlet 14 . In an in-line type device, the first
The second opening is opened on the same straight line (inline) with a 90° flow path changed in the lid body, and is connected to the permeate outlet pipe (not shown) and the to-be-treated liquid inlet pipe (not shown), respectively. Connected.

The treated liquid inlet 14 and the permeated liquid outlet 13 may be provided in the same direction on the top wall or side wall of the lid body 2, if necessary. A small-diameter protrusion 9 of the cap body 4 connected to the upper focusing fixing part 5 of the hollow fiber cartridge 3 is inserted into the first opening communicating with the permeate outlet 13 . The protrusion 9 and the first opening provided in the lid are sealed by two O-rings 15. Treated liquid inlet 14 and permeated liquid outlet 1
If 3 is reversed and used, it can be used as an internal pressure filter. Further, a leakage liquid outlet 16 is bored in the outer wall of the lid body 2 and opens between the O-rings 15 housed in the two annular grooves of the conical projection 9 of the cap body inserted into the first opening. has been done. 17 is housing 1
This is a band coupling that liquid-tightly connects the lid body 2 and the lid body 2 through a gasket 18. These packskin 1
8 and the O-ring 15, the treated liquid chamber 19 and the permeated liquid chamber 20 have a liquid-tight structure by separating the wall membrane of the hollow fiber. In other words, the liquid to be treated is at the liquid to be treated inlet 14.
It enters the processing chamber 19 outside the hollow fiber 3. The permeate that has permeated through the hollow fiber passes through a passage inside the hollow fiber, is collected in a permeate chamber 20, passes through a conical cap 4, and is taken out from a permeate outlet 13. On the other hand, components that do not pass through the hollow fibers are appropriately taken out from the lower discharge port 21 of the housing 1.

In the above device, the part where the liquid to be treated leaks to the permeate side is the permeate outlet 1 provided on the bottom wall of the lid body 2.
3 and the small-diameter protrusion 9 of the cap body 4 connected to the upper focusing fixing part 5 of the hollow fiber cartridge 3 inserted into the first opening. , the gap is between two O-rings 1
5 and is completely sealed. However, if the O-ring is damaged and the sealing performance is lost, the liquid to be treated on the pressurized side will flow out from the leakage liquid outlet 16, which is open to the atmosphere and is drilled in the side wall of the lid, so that the liquid to be treated will be on the permeated liquid side. It will not leak. Furthermore, since the liquid to be treated flows out from the leakage liquid outlet, leakage can be detected by an operator or an appropriate measuring device. When three O-rings are attached to the cap, it is preferable to provide a leakage liquid outlet communicating with each O-ring. By providing such a plurality of leakage liquid outlets, it is possible to immediately detect which O-ring has lost its sealing properties. When the hollow fibers deteriorate or become clogged, the liquid to be treated inside the housing is first drawn out from the discharge port 21, and then the band coupling 17 is removed from the lid 2 to separate the lid 2 and the housing 1. Then, the hollow fiber cartridge 3 is removed from the housing. After that, a new hollow fiber cartridge 3
After inserting into the first opening provided in the lid body 2,
By attaching the housing 1 to the lid, the lower focusing fixing part 5' of the hollow fiber cartridge is engaged with the support base 36 provided at the lower part of the housing. The support stand 36
By placing the lower focusing fixing part 5' of the hollow fiber cartridge on top, the small-diameter protrusion 9 provided at the tip of the cap body 4 is fluid-tightly attached to the first opening provided in the lid body. be able to.

The above device is normally used with the lid placed on the top of the housing as shown in FIG. 1, but depending on where the device is installed, it may be used in an inverted or horizontal position. In this case, it is preferable to provide a discharge port for the liquid to be treated in the housing in the liquid to be treated pipe.

As the hollow fibers used in the device of the present invention, commonly known materials such as polysulfone, polyacrylonitrile, cellulose such as cellulose acetate, polyamide, polycarbonate, and polyvinyl alcohol can be used. It has excellent chemical resistance such as heat resistance, acid resistance, alkali resistance, and oxidation resistance, so it is resistant to oxidizing agents,
It is preferably used because the membrane can be regenerated by chemical cleaning with acids, alkalis, etc.

Further, as the adhesive for converging and fixing the hollow fibers, a polyurethane-based adhesive, a silicone-based adhesive, an epoxy-based adhesive, or the like can be used. In particular, in applications requiring heat resistance and chemical resistance, imidazole-based cured epoxy resins are preferably used.

The housing and lid that house the above hollow fiber cartridge are usually made of acrylic, polycarbonate, hard PVC,
Resins such as polysulfone are used, but when processing high-temperature liquids using polysulfone hollow fibers, which have excellent heat and chemical resistance as hollow fiber cartridges, the housing and lid must be heat and chemical resistant. It is preferable to use polysulfone resin, which has excellent properties. Of course, metal such as stainless steel may be used.

(Effects of the Invention) According to the present invention, when it is desired to replace the hollow fiber cartridge, it can be easily replaced by removing the housing. Furthermore, in this case, even if the apparatus is fixed with a pipe, it is not necessary to remove the inlet pipe for the liquid to be treated and the outlet pipe for the permeated liquid, making it extremely easy to replace the hollow fiber cartridge.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the apparatus of the present invention, and FIGS. 2 and 3 are perspective views of a hollow fiber cartridge used in the apparatus of the present invention. 1... Housing, 2... Lid, 3... Hollow fiber cartridge, 4... Cone-shaped cap, 5, 5'...
Focusing fixing part, 9...Protrusion part.

Claims (1)

[Scope of Claims] 1 A large number of hollow fibers with their tips sealed are housed in a porous cylindrical body, and the other ends are bundled and fixed with an adhesive so that each hollow fiber is open. A hollow fiber cartridge is integrated with a cylindrical body and has a cap body having a small-diameter protrusion at the tip of the convergence fixing part of the plurality of hollow fibers, and a support means for supporting the lower end of the hollow fiber cartridge on the bottom wall. It has a housing for storing a hollow fiber cartridge, a treated liquid inlet and a permeated liquid outlet on the side wall, and a permeated liquid outlet (or treated liquid inlet) in the center of the bottom wall.
a lid body provided with a first opening that communicates with the first opening and a second opening that communicates with the inlet of the liquid to be treated (or the outlet of the permeated liquid) at a position apart from the first opening, and the focusing of the hollow fiber cartridge. A small-diameter protrusion provided on the cap body connected to the fixed part is liquid-tightly inserted into a first opening provided on the bottom wall of the lid body,
and an overuse device characterized in that the upper end opening of the housing is liquid-tightly attached to the lid, and the lower end of the hollow fiber cartridge is engaged with support means provided on the bottom wall of the housing. .