JPS62186905A - Precision filter - Google Patents

Abstract

PURPOSE:To increase the filtration area per unit area, to prevent clogging, and to easily exchange a filter member by connecting a filter member obtained by inserting a filter element into a housing having a connection to a lid body, and making the filter membrane freely detachable from and attachable to the lid body. CONSTITUTION:The housing 13 having the connection 12 and the filter element 14 using a hollow yarn membrane, etc., are integrally inserted with a potting material 15 at one end, and the other end is integrally fixed with a potting material 16 so that the end part 17 of the filter element 14 is opened to obtain the filter membrane 11. The lid body 23 of the housing having a fluid inlet 24 to the existing cartridge filter and a fluid outlet 25 is liquidtightly connected to the filter member 11 with an O ring 22, and made freely detachable and attachable. The cap body 20 of the filter member 11 is liquid-tightly connected to the holding part 26 of the lid body 23 with an O ring 21, and made freely attachable and detachable. A liq. to be filtered is introduced into the housing 13 from the inlet 24 through a communicating port 19 and passed through the filter element 14 wherein fine particles and microbes are filtered and sterilized. The filtrate is discharged from the outlet 25 through the end part 17 and the cap body 20.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention has a lid having a fluid inlet and a fluid outlet with a filtration member detachably attached thereto for purposes such as sterilization and removal of particulates. This invention relates to precision filtration equipment.

[Prior Art] Conventionally, the filters used in precision filtration devices are disc type filters using membranes (for example, Ball Corporation, FM Inc.,
A cartridge type in which the membrane is incorporated into the membrane support in a pleated manner, or a cartridge filter housing such as Kotton is incorporated into the housing of the cartridge filter that extends from the lid and the casing. (For example, Ball Corporation, FM Incorporated, Millipore Corporation, Sartorius Gesellschaft Mitsut Beschrenchtel Hafrang, German
Cartridge types such as those manufactured by Science Incorporated and Fuji Photo Film Co., Ltd. are the main types. There is also a modular type in which a hollow fiber membrane is integrated into a dedicated housing.

[Problems to be solved by the invention] In precision filtration, disc type filters with high reliability of filtration accuracy easily clog due to the small amount of permeation per unit volume of the filtration body. Cartridge-type filters, which allow a larger amount of permeation per unit volume of the body than disk-type filters, have come to be mainly used. For cartridge type filters, the cartridge filter housing is installed in the production line where the filter is used. In particular, the lid of the housing with the fluid inlet and outlet is connected and fixed to the production line. When the filter inside the housing becomes unusable due to clogging or damage, the work is done by removing the housing from the M body, taking out the filter inside, and replacing it with a new filter. At this time.

In order to prevent the filter from clogging as much as possible, clean the inside of the housing with pure water or a liquid that does not contain any impurities in order to avoid washing away the microorganisms and particulates that have been removed by the filter attached to the lid of the housing. It was washed with etc.

In addition, since conventional filtration devices using hollow fiber membranes are modules in which the hollow fiber bundle and the housing are integrated, when the hollow fibers that form part of the filter become unusable due to clogging or damage, etc. Since the module must be removed from the production line in which the filter is used, replacing the filter is extremely complicated and costly.

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a precision filtration device that has a large filtration area per unit volume, prevents clogging, allows easy replacement of the filtration member, and is capable of sterilization and removal of fine particles. With the goal.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a lid body having a fluid inlet and a fluid outlet;
A filtration element r is inserted into a casing having a connection part that can be connected to the filtration element r, the casing and the filtration element are integrally enclosed at one end, and the end of the filtration element is open at the other end. The housing and the filtration element are integrally fixed to each other, and the opening end of the filtration element is fluid-tightly connected to the inside of one of the openings of the lid. The casing has a structure with a communication opening so that the other opening of the body communicates with the inside of the casing.The casing has a structure with a communication opening so that the inside of the other opening of the body communicates with the inside of the casing. This is a filtration device.

[Example] Next, the present invention will be specifically explained based on the drawings.

FIG. 1 shows a first embodiment of a filter member according to the present invention. A filter member 11 is composed of a housing 13 having a connecting portion 12 and a filter element 14. As shown in FIG. The form of the filter element 14 is as follows:
A pleated membrane, a tube-like membrane, a hollow fiber-like membrane, etc. can be used, but a hollow-fiber membrane is preferable because it can increase the amount of permeation per unit volume of the filter. In the first embodiment of the present invention shown in FIG. 1, a hollow fiber membrane is used as the filtration element 14.

Materials for the filtration element 14 include polyolefin, fluorine, regenerated cellulose, cellulose derivatives, polyvinyl alcohol, polyacrylonitrile, polymethyl methacrylate-1, polyamide, polyester, polysulfone ring various polymers, and Inorganic materials such as ceramics and metals can be used.

As the material of the casing 13, various polymers such as polyacetal, polysulfone, polycarbonate, polymethacrylate, polyolefin, polyamide, fluorine thread, etc., and metals such as stainless steel can be used.

The housing 13 and the filtration element 14 are coated with botting material I5 at one end.
It is integrally enclosed. On the other hand, the other ends of the casing 13 and the filtration element 14 are fixed together with a botting material 16 such that the end 17 of the filtration element 14 is open. There is. Botting material 15
．． 16 materials include fluorine-based, polyolefin-based,
Various polymers such as polyurethane and epoxy can be used.

A cap body 20 having a cylindrical protrusion is joined to an end surface of the botting material 16. The cap body 20 has an O-ring 21, and can be detached from the lid body of an existing cartridge filter housing or a lid body having a dedicated fluid outlet and fluid inlet for the precision filtration device of the present invention. This allows for a liquid-tight fit.

Further, the housing 13 has a communication port 19, and the liquid to be filtered enters the housing 14 through the communication port 19 and passes through the filtration element 14.
The filtrate is collected in the inner chamber of the cap body 20.

Next, FIG. 2 shows a precision filtration device in which this filtration member 11 is connected to the lid 23 of the housing of an existing cartridge filter. The lid body 23 of the cartridge filter housing is manufactured by Ball Corporation, FM Co., Ltd.
This figure shows one of the lids of the housings of cartridge filters for precision filtration, such as Incoholated, Millibore Corporation, Sartorius Gesellschaft Mitsu1, Beschrenchtel, and Hafrang. The lid body 23 has a fluid inlet 24 and a fluid outlet 25. The lid body 23 and the filtering member 11 are removably connected in a liquid-tight manner by an O-ring 22. Further, the cap body 20 of the filtering member 11 is removably connected to the holding portion 26 of the lid body 23 by an O-ring 21 in a liquid-tight manner.

The liquid to be filtered is led into the housing 13 from the fluid inlet 24 through the communication port 19, and passes through the micropores of the hollow fiber membrane from the outer surface of the hollow fiber membrane, which is the filtration element 14. At this time, particulates and microorganisms contained in the liquid to be filtered are filtered and sterilized. The filtrate passes through the interior of the hollow fiber membrane from the end 17 through the inner chamber of the cap body 20 and is discharged from the fluid outlet 25. However, the flow direction of the liquid to be filtered may also be reversed.

Normally, the lid 23 is built into the production line that uses the filter, so if the filter element 14 becomes clogged or damaged and becomes unusable, the filter member 11 can be removed from the lid 23. A simple replacement job is simply installing a new filtration member.

FIG. 3 shows a second embodiment of a filter member according to the invention.

The filtering member 31 includes a housing 33 having a connecting portion 32 and a filtering element 34 . Various forms of the filter element 34 can be used as in the first embodiment, but in this embodiment, a hollow fiber membrane was used which can increase the amount of permeation per unit volume of the filter body. .

The housing 33 and the filtration element 34 have a botting material 35 at one end.
It is integrally enclosed. On the other hand, the other ends of the casing 33 and the filtration element 34 are fixed together with a botting material 36 such that the end 37 of the filtration element 34 is open. There is. Further, a ring-shaped cap body 40 and a packing material 41 are joined to the end surface of the botting material 36.

Further, the housing 33 has a communication port 39, and the liquid to be filtered enters the housing 33 through the communication port 39 and passes through the filtration element 34.
The filtrate is collected in the inner chamber of the cap body 40.

Next, FIG. 4 shows a precision filtration device when this filtration member 31 is connected to a lid body 43 having a dedicated fluid inlet 44 and a fluid outlet 45. The lid body 43 and the filtering member 31 are removably connected in a liquid-tight manner by an O-ring 42 at the connecting portion 32. Further, the cap body 40 of the filtering member 31 is removably connected to the holding portion 46 of the lid body 43 by a packing material 41 in a liquid-tight manner.

The liquid to be filtered is guided into the housing 33 from the fluid inlet 44 through the communication port 39, and passes through the micropores of the hollow fiber membrane from the outer surface of the hollow fiber membrane, which is the filtration element 34. At this time, particulates and microorganisms contained in the liquid to be filtered are filtered and sterilized. The filtrate passes through the interior of the hollow fiber membrane from the end 37 through the inner chamber of the cap body 40 and is discharged from the fluid outlet 45 . However, the flow direction of the filtrate may also be reversed.

Normally, the lid 43 is built into the manufacturing line that uses the filter, so if the filter element 34 becomes clogged or damaged and becomes unusable, the filter member 31 can be removed from the lid 43. A simple replacement job is simply installing a new filtration member.

Further, FIG. 5 shows a state in which the filtering member 31 shown in FIG. 2 is connected to the lid 23 of the housing of an existing cartridge filter. The lid body 23 has a fluid inlet 24 and a fluid outlet 25. Lid body 23 and filtering member 31
are removably connected in a liquid-tight manner by an O-ring 52 using a connecting member 58.

Further, the cap body 40 of the filtering member 31 is removably connected to the holding portion 26 of the lid body 23 by a packing material 41 in a liquid-tight manner.

The liquid to be filtered is guided from the fluid inlet 24 through the inner chamber of the connecting member 32 and into the casing 33 through the communication port 39, and passes through the filtration element 3.
4, passes through the micropores of the hollow fiber membrane from the outer surface of the hollow fiber membrane. At this time, particulates and microorganisms contained in the liquid to be filtered are filtered and sterilized. The filtrate passes through the interior of the hollow fibers from the end 37 through the inner chamber of the cap body 40 and is discharged from the fluid outlet 25.

However, the flow direction of the filtrate may also be reversed.

Normally, the lid body 23 is built into the production line that uses the filter, so if the filter element 34 becomes clogged or damaged and cannot be used, the filter member 31 and the connecting member 5♂ can be removed. Either remove it from the lid body 23 and attach a new filtration member and connection member, or replace the filtration member 31 with the connection member 5.
Replacement work is as simple as removing it from 8 and installing a new filtration member.

Although several embodiments related to precision filtration devices have been described above, the present invention is not limited thereto.

[Effects of the Invention] As described above, the precision filtration device according to the present invention has the following advantages.

■It can be attached to and removed from the lid of an existing cartridge filter housing or a special lid, making it easy to replace the filter.

(2) By making the portion of the housing of the cartridge filter where the particulates and microorganisms removed by the filtration element exist disposable, the conventional steps such as cleaning the housing can be omitted.

■Since the filtration element and the housing are integrated, the filtration element will not be damaged during transportation or storage, making quality control easy and providing high reliability in filtration accuracy.

[Brief explanation of drawings]

Fig. 1 is a partial sectional view showing a first embodiment of the filtering member according to the present invention, and Fig. 2 shows a precision filtration device in which the filtration device of the first embodiment is attached to the lid of the housing of an existing cartridge filter. 3 is a partial sectional view showing a second embodiment of the filtering member according to the present invention, and FIG. 4 is a precision filtration device in which the filtering member of the second embodiment is attached to a dedicated lid body. FIG. 5 is a partial sectional view showing a precision filtration device in which the filtration member of the second embodiment is attached to the lid of an existing cartridge filter housing using a connecting member.

Claims (5)

[Claims] (1) A filtration element is inserted into a casing having a lid having a fluid inlet and a fluid outflow, and a connection part that can be detachably connected to the lid, and the casing and the filtration element are integrated at one end. The housing and the filtration element are integrally fixed so that the end of the filtration element is open at the other end, and the filter member is enclosed in a filtration member. A precision filtration device characterized in that the casing has a structure having a communication port so that one opening of the lid body is fluid-tightly connected and the other opening of the lid body communicates with the inside of the casing. . (2) The precision filtration device according to claim 1, characterized in that a cap body having a cylindrical protrusion is attached to the open end of the filtration element. (3) The precision filtration device according to claim 1, characterized in that a packing material is adhered to the open end of the filtration element. (4) The precision filtration device according to any one of claims 1 to 3, further comprising a connection member that can removably connect the filtration member and the lid in a liquid-tight manner. (5) Any one of claims 1 to 4, wherein the filtration element is a large number of hollow fiber membranes formed from hollow membranes having micropores that communicate with each other between an inner surface and an outer surface. The precision filtration device described in .