JP2002095934A - Hollow fiber membrane type pipe filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small hollow fiber membrane type pipe filter which can be mass-produced at a low cost and mounted easily when it is connected. SOLUTION: The potting part 4 of a hollow fiber membrane 2, installed in a pipe body 1, is sealed in the end part of the pipe body 1. At least this cylindrical part installed in the end part of the pipe body 1 is used as a joint plug.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hollow fiber membrane type filter in which a hollow fiber membrane is built in a pipe made of resin or soft metal, and more particularly, to a plug for a joint which can be connected to an external flow path at the pipe end. The present invention relates to a hollow fiber membrane type pipe filter provided with:

[0002]

2. Description of the Related Art Conventionally, connectors having various structures have been provided as connecting connectors for connecting to a flow path of a fluid such as compressed air or the like and for connecting a flexible pipe such as a resin. For example, the pipe joint disclosed in Japanese Utility Model Publication No. 57-45513 is provided with a cylindrical locking member provided with a plurality of strip-shaped locking pieces that are elastically deformed in a connecting portion with a pipe, and this locking is performed. The pipe is held at the connection position by making the edge of the tip of the inclined bent portion provided at the tip of the piece bite into the outer circumference of the inserted pipe. Further, in the pipe joint disclosed in Japanese Utility Model Publication No. 61-34599, when a pipe is inserted from an opening, a protective ring having a plurality of finger pieces inwardly engages the pipe to connect the pipe to the joint. I am trying to attach it. In these fittings, components are usually incorporated in the fitting intricately in order to enhance the internal sealability and keep the inserted pipe in a stronger connection state.

On the other hand, a hollow fiber membrane module having a hollow fiber membrane housed therein is used, for example, for filtering or dehumidifying a fluid flowing through a flow path connected to a flow path of a fluid such as compressed air. At the time of manufacturing a hollow fiber membrane module, a large number of hollow fiber membranes are bundled in a straight or a substantially U-shaped loop, and a potting site is provided at one or both ends of the hollow fiber membrane bundle to form a hollow end. The hollow fiber membrane bundle is provided, and the hollow fiber membrane bundle is housed in a housing case to constitute a hollow fiber membrane module.

[0004] In the hollow fiber membrane module, this case portion plays the role of a pressure vessel. When connecting to a quick joint or the like of a dehumidifying system, caps having connection portions at both ends of the case portion are connected. Further, the connection portion is connected to a quick joint or the like via a connection adapter. As described above, when connecting a hollow fiber membrane module to a quick joint or the like, a connection adapter or the like having a connection portion is generally required.

As means for connecting the connection portion of the cap to the connection adapter, for example, a male screw is provided as a connection portion, and a female screw connectable to the male screw is provided in the connection adapter, and these are screwed together. Some are designed to be connected. In this case, especially when these are screwed together with a parallel screw, a general-purpose joint cannot often be connected to the male parallel screw. Therefore, a female screw that can be screwed to the male parallel screw provided at the connection portion is provided. The connection adapter is connected between the male parallel screw and the joint.

If a tapered screw is to be provided at the connection site, a large stress is generated when the hollow fiber membrane module is screwed, and the screwing stress may cause the case and the potting member such as polyurethane to peel off. , Is not commonly used.

[0007]

When a hollow fiber membrane module is connected, a socket or plug is provided at a connection portion of the module in addition to connection by a screw, and the module is connected to a joint paired with the socket or plug. There are various types of connection adapters depending on the shape, structure, etc. of each hollow fiber membrane module.In general, since the connection adapter and the hollow fiber membrane module are used as one set, a hollow In addition to the cost of the main body of the fiber membrane module, the cost of the connection adapter is also high, and since this set of hollow fiber membrane modules and the connection adapter must be manufactured according to the connection location, it is laborious and significant Cost had risen.

Further, when the connection structure between the cap of the hollow fiber membrane module and the connection adapter becomes complicated, it takes time and effort for processing, which makes mass production difficult. If dust or the like accumulates and becomes clogged in these hollow fiber membrane modules, replacement is necessary. In this case,
The cost was high.

When connecting the hollow fiber membrane module,
Because it is the length of connecting the entire module and the connection adapter, it becomes large after connection, making installation difficult,
Alternatively, the mounting is troublesome according to the connecting means by the screw connection of the external thread and the internal thread.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a small-sized hollow fiber membrane type pipe filter which can be mass-produced at low cost. Sometimes it is to provide a hollow fiber membrane pipe filter that can be easily mounted.

[0011]

In order to achieve the above object, a hollow fiber membrane type pipe filter according to the present invention seals a potting portion of a hollow fiber membrane provided in a pipe body within an end of the pipe body. At least a cylindrical portion provided at the end of the pipe body was used as a plug for a joint.

The above-mentioned hollow fiber membrane type pipe filter is a hollow fiber membrane type pipe filter in which cylindrical portions provided at both ends of a pipe body are used as a plug for a joint.

[0013] The present invention is a hollow fiber membrane type pipe filter provided with a joint portion to which a pipe made of a resin or a soft metal can be connected at the other end side of the pipe body. The shape of the pipe body has a shape such as a straight shape or an elbow shape.

[0014] The joint portion has an enlarged diameter at one end side of a flow path provided inside the pipe, and an elastic body having a sealing property at the enlarged diameter portion, and a plurality of hook-like gripping pieces at an inner peripheral portion. A locking member provided by bending the locking member is inserted, a substantially ring-shaped fastening member is press-fitted into the enlarged diameter portion, and further, a pressing tool having a cylindrical portion capable of pressing the locking member on the distal end side. I am wearing it.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a hollow fiber membrane type pipe filter according to the present invention will be described below with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a pipe main body, and the pipe main body 1 is formed into a cylindrical socket nipple shape using a resin or a soft metal material. Pipe body 1
Has a form such as a straight or elbow-shaped pipe body 21 as shown in FIG. 1 or FIG. 9, and these forms are appropriately used depending on the application.

In the pipe body 1, a hollow fiber membrane 2 in which a large number of hollow fiber membranes are bundled in a straight line or in a loop shape in a substantially U-shape is held and held. Further, for example, a binding member (not shown) such as a two-component mixed type thermosetting resin made of a polyurethane resin or an epoxy resin is sealed in the end of the pipe body 1 by means of dipping in a molten container, and a potting portion is formed. 4 are provided. Further, in the pipe main body 1, at least a cylindrical portion provided at an end of the pipe main body 1 is defined as a joint plug 9.

As shown in the figure, a pipe body 1 is connected to a joint 6 such as a union or a hose joint by a plug 9 for a joint.
Can be connected to the joint 6 of the embodiment of the present embodiment simply by inserting the pipe body 1 into the insertion hole 6a. After the connection, the joint plug 9 at one or both ends of the pipe body 1 can be connected. Can be stored in the joint 6. The tubular joint plug 9 is connected to the pipe body 1.
In the case where both ends are provided as joint plugs 9, the joints 6 can be connected to both ends of the pipe main body 1 as shown in FIG. 3.

In FIG. 4, reference numeral 11 denotes a pipe main body according to another embodiment of the present invention. The pipe main body 11 in the present embodiment is provided with a joint portion 12 integrally, and is of a reducer type. Inside the joint portion 12, an enlarged diameter portion in which one end side of the flow path 5 provided inside the pipe main body 1 is enlarged. 13 are provided. Further, an O-ring 14 made of an elastic body having a sealing property is attached to a step portion formed by the flow path 5 and the enlarged diameter portion 13, and then a lock member 15 is inserted and a substantially ring-shaped fastening is performed. The member 16 is press-fitted and fixed to the enlarged diameter portion 13 by means such as caulking.

The lock member 15 has a substantially annular fixing portion 15a on the outer peripheral side. The fixing portion 15a is housed in the enlarged diameter portion 13 while being sandwiched between the O-ring 14 and the fastening member 16. A plurality of hook-shaped gripping pieces 15b are provided on the inner peripheral side of the lock member 15 at the peripheral portion so as to be bent from the fixing portion 15a.

This gripping piece 15b has a joint 12
It is bent at an angle such that it can be in contact with the resin or soft metal tube 20 inserted into the inside, and when the tube 20 is inserted,
The gripping piece 15b is further bent in the bending direction so that the pipe 20 can be inserted, and after the pipe 20 is inserted, the distal end of the gripping piece 15b is engaged with the outer peripheral portion of the inserted pipe 20 so as to bite. The tube 20 is stopped and locked.

Reference numeral 17 denotes a pressing tool having a cylindrical portion 17a at the distal end capable of pressing the lock member 15;
When the pressing member 7 is pressed, the release portion 17b provided to be inclined toward the distal end side of the cylindrical portion 17a can press the gripping piece 15b of the lock member 15 to release the locking of the tube 20 at the distal end of the gripping piece 15b,
The lock of the tube 20 by the lock member 15 can be released.

In the first embodiment, if the connection structure with the pipe body 1 provided near the end of the joint 6 is provided in substantially the same structure as the joint portion 12 of the second embodiment, the pipe When the main body 1 is inserted into the joint 6, it can be firmly locked, and the lock can be easily released.

In FIG. 7, reference numeral 7 denotes an air gun formed of a soft material such as resin and used in a clean room or the like. The air gun 7 is provided so that compressed air can be discharged from a nozzle tip (not shown) by pulling a grip 7a. In the present embodiment, the joint 6 is attached to the air inflow side into the air gun 7, the joint plug 9 of the pipe main body 11 is inserted into the joint 6, and the joint 1 of the pipe main body 11 is further inserted.
The tube 20 is inserted into the tube 2 to form a flow path.

In each of the embodiments, the fluid flows while the filter bodies 1 and 11 are connected to the joints 6 and 6, respectively, or when the pipes 20 and 20 are connected to the filter bodies 1 and 11, respectively. The pressure of this fluid allows the joint plugs 9, 9 or the pipe 20 to be pressed from the inside to expand the diameter, so that the outer peripheral surface portions can be brought into close contact with the O-ring 14, and higher sealing performance can be achieved. Can be maintained.

Next, the operation of the above embodiment will be described. In the hollow fiber membrane type pipe filter of the present invention, the hollow fiber membrane 2 is inserted into the pipe main body 1, the potting portion 4 is sealed at the end inside the pipe main body 1, and at least the pipe main body 1 is sealed.
Since the cylindrical part provided at the end of the joint plug 9 is used as the joint plug 9 and the joint plug 9 is connected to the joint 6, it is an integral pipe filter that does not require a new connection adapter or the like. Costs can be reduced and no labor is required.

Further, the pipe main body 1 can be formed from a cylindrical pipe, and the cylindrical portion of the pipe main body 1 can be provided as the joint plug 6, so that the connection structure is simple and the processing is easy. Because it is easy, mass production is possible.

If it becomes necessary to replace it,
Even if the entire pipe body 1 is replaced, the disposable pipe filter is inexpensive and does not costly waste, so that it can be quickly replaced according to the degree of wear.

On the other hand, when connecting, a connection adapter is not required, so that it is possible to reduce the size, and it is a hollow fiber membrane type pipe filter which can be mounted even in a narrow installation place. Further, the joint plug 9 has an insertion hole. 6a, it can be made compact after connection. Further, the pipe bodies 1 and 11 are inserted into the joint 6 or the pipe 20 is connected to the body 1.
Since the connection can be easily made by inserting into the one joint portion 12, the connection can be made without any trouble.

Furthermore, if a joint 12 capable of connecting a resinous / soft metal pipe 20 is provided at the other end of the pipe body 1, a joint 6 such as a union or a hose joint is required at the time of connection. And never.

For example, when the pipe body 11 of the present invention is used for a small device such as the air gun 7, the joint 6 and the pipe 20 are connected to the joint plug 9 and the joint portion 12 which are the ends of the pipe body 11. The pipe body 11 can be connected to each other and provided in a compact manner, so that the usability of the apparatus is improved, and the pipe body 11 can be detached with a single touch, thereby improving the usability such as improving the maintainability of the apparatus body. Demonstrate.

[0031]

As is clear from the above, according to the present invention, a low cost hollow fiber membrane type pipe filter which can be easily mass-produced, and which can be easily attached at the time of connection. Furthermore, at least one end of the pipe main body is provided so as to be insertable into a connection portion such as a joint, so that the pipe body can be shortened, thereby improving the operability of an apparatus or the like to which the pipe filter is connected.

Further, a joint having an appropriate structure can be easily connected to both ends of the hollow fiber membrane type pipe filter, and the size can be reduced.

A hollow fiber membrane type pipe filter which can be attached without connecting a connecting adapter when connecting a resin or soft metal pipe.

Moreover, according to this connection structure, the connection can be made with one touch, and the connection can be made firmly without disconnection after connection, and at the time of removal, the hollow fiber membrane type pipe filter can be removed easily. It is.

[Brief description of the drawings]

FIG. 1 is a central cross-sectional view showing one embodiment of a hollow fiber membrane type pipe filter according to the present invention.

FIG. 2 is a sectional view showing a state where the hollow fiber membrane type pipe filter of FIG. 1 is connected to a joint.

FIG. 3 is a partially cutaway sectional view showing a state where the hollow fiber membrane type pipe filter of FIG. 1 is connected to a joint.

FIG. 4 is a central transverse sectional view showing another embodiment of the present invention.

FIG. 5 is a partial sectional view showing a state where a tube is inserted in FIG. 4;

FIG. 6 is a partial cross-sectional view showing a state where the pressing tool of FIG. 5 is pressed.

FIG. 7 is a front view in which the hollow fiber membrane type pipe filter of the present invention is mounted on an air gun.

FIG. 8 is an exploded, partially cutaway sectional view of FIG. 7;

FIG. 9 is a central transverse sectional view showing another embodiment of the hollow fiber membrane type pipe filter according to the present invention.

[Explanation of symbols]

 1, 11, 21 Pipe body 2 Hollow fiber membrane 4 Potting part 5 Flow path 9 Joint plug 12 Joint part 13 Large diameter part 14 Elastic body (O-ring) 15 Lock member 15b Grip piece 16 Fastening member 17 Pressing tool 17a Cylindrical Part 20 tube

Claims (5)

[Claims] The present invention is characterized in that a potting portion of a hollow fiber membrane provided in a pipe main body is sealed within an end of the pipe main body, and at least a cylindrical portion provided at an end of the pipe main body is a joint plug. Hollow fiber membrane type pipe filter. 2. The hollow fiber membrane type pipe filter according to claim 1, wherein the cylindrical portions provided at both ends of the pipe main body are used as joint plugs. 3. The hollow fiber membrane type pipe filter according to claim 1, wherein a joint portion to which a resin or soft metal pipe can be connected is provided at the other end of the pipe body. 4. The hollow fiber membrane type pipe filter according to claim 1, wherein the pipe main body has a shape such as a straight shape or an elbow shape. 5. The above-mentioned joint portion has one end side of a flow path provided inside a pipe, and has an enlarged diameter portion. The enlarged diameter portion has an elastic body having a sealing property, and a plurality of hook-shaped portions at an inner peripheral portion. A locking member provided by bending the gripping piece is inserted, a substantially ring-shaped fastening member is pressed into the enlarged diameter portion, and further, a cylindrical portion capable of pressing the locking member is provided on the distal end side. The hollow fiber membrane type pipe filter according to claim 3, further comprising a pressing tool.