JPH0810368Y2 - Membrane module - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a membrane module having a pipe joint.

(Prior Art) When a raw solution is processed by a membrane module, a pipe is required to supply the raw liquid to the membrane module and further to transfer the concentrated liquid and the permeated liquid from the membrane module to a tank. A joint is indispensable for the connection between the membrane module and the membrane module. In particular, when the membrane modules are used in parallel connection or when a large number of membrane modules are subjected to a stock solution treatment experiment, the number of joints used is significantly increased, and it is desirable to use joints that can be quickly connected with one touch. , Traditionally,
It is known to use a one-touch connector for connecting the membrane module and the tubing.

By the way, in the membrane module, the membrane is clogged and the permeation flux decreases with the lapse of use time. Therefore, it is necessary to clean the membrane relatively frequently. Although various methods such as backwashing method and chemical injection method are used for this cleaning, it is necessary to completely expel the chemicals and the like from the inside of the membrane module after performing the cleaning, and the chemicals and the like may remain. For example, in the initial stage of re-operation, contamination of the permeated liquid and the like due to the mixing of such chemicals is unavoidable.

(Problems to be solved) Conventionally, in general, the joint is fixed to the membrane module with an adhesive, and in such a membrane module, during the above-mentioned cleaning, the chemicals and the like are likely to accumulate at the corners inside the joint, There is a concern that the permeated liquid may be contaminated at the initial stage of the restart of the membrane module. Even in the above one-touch type connector, once the connector and the module are inserted and connected, the retaining ring exerts a strong locking action in the pulling direction, making it difficult to separate them. Therefore, there is concern that the permeated liquid may be contaminated due to the residual drug.

An object of the present invention is to provide a membrane module that can be quickly connected to a pipe and can be quickly detached from a joint.

(Means for Solving the Problems) The membrane module of the present invention comprises a rubber ring for sealing between an inner surface of the joint body and the end of the membrane module, and a membrane module end portion in the joint body into which the end of the membrane module is inserted. A pipe joint accommodating a retaining ring that locks to the outer surface and a pusher that releases the retaining ring by expanding the diameter of the retaining ring is attached to the end of the membrane module.

(Explanation of embodiment) Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

 The drawings are explanatory views showing an embodiment of the present invention.

In the figure, A is a membrane module, for example, a hollow fiber membrane or a tubular membrane 2, ... Is housed in an outer cylinder 1, and a resin partition wall 3 is formed at the end portion of the outer cylinder by resin casting. Alternatively, the open ends 21 of the tubular membranes 2, ... Are opened to the outside of the resin partition wall 3. In this case, resin partition walls may be provided at both ends of the outer cylinder 1 to open both ends of the hollow fiber membrane or the tubular membrane 2, ... Or the resin partition wall may be provided only at one end side of the outer cylinder. Only one end opening of the membrane or tubular wall 2, ... May be opened to the outside and the other end opening may be closed. B is a joint attached to the raw liquid inlet pipe part or the outlet pipe part of the membrane module A, or the permeated liquid flow outlet pipe part, and at least one joint has a rubber ring 41 accommodated in the inner part of the joint body 4. The back ring 4 is a retaining ring 42 that has a slit 421 for reducing the diameter at the tip.
3 and the collar 44 are connected, and a pusher 45 for expanding the diameter of the tip 421 of the retaining ring 42 is slidably accommodated in the collar 44. Therefore, the pusher 45 is attached to the joint body 4
If you push it toward the back of the
Since the diameter of 1 is increased and the locking action of the retaining ring 42 on the end of the membrane module is released, the membrane module A can be easily pulled out from the joint.

In the membrane module A, the joint solution is connected to the pipe by the joint B, the stock solution is supplied to the membrane module from the stock solution supply pipe, and the concentrated liquid or permeated liquid from the membrane module is predetermined by the concentrated liquid side pipe or the permeated liquid side pipe. Will be transferred to the place.

If the membrane module is used for a long period of time, the separation performance will be deteriorated due to the clogging of the membrane, so cleaning is performed by periodically injecting a chemical agent, backwashing, or the like. After cleaning, if the membrane module is separated from the joint, residual chemicals and the like in the membrane module can be reliably removed, and when the module is restarted, contamination of the permeate due to residual chemicals and the like can be prevented.

In the above, for the connection structure between the joint and the pipe, any of the screw type, the insertion type, and the one-touch type with the built-in pusher described above can be used.

In the above, for the membrane module, either an internal pressure type or an external pressure type can be used. In the case of the internal pressure type, resin partition walls are provided on both sides of the outer cylinder, both end openings of the hollow fiber membrane or the tubular membrane are opened to the outside of the resin partition wall, one end of the outer cylinder serves as a stock solution supply port, and the other end serves as a concentrated solution outlet, What has a permeated liquid port in the middle of the outer cylinder can be used, and the permeated liquid port can be connected to the pipe,
A nozzle type or screw type can be used, and the above-mentioned joints with built-in pushers are attached to both ends of the membrane module. In the case of the external pressure type, a resin partition wall is provided at one end of the outer cylinder, one end opening of the hollow fiber membrane or tubular membrane is opened to the outside of the resin partition wall, the other end opening is closed, and the other end of the outer cylinder serves as a stock solution supply port. It is possible to use one in which one end of the cylinder is the permeate port, and the joint at the other end of the outer cylinder on the raw liquid inlet side or the joint at both ends of the outer cylinder has the above-mentioned pusher built-in structure. In the case of the external pressure type, it is also possible to form the hollow fiber membrane in a U shape and open both ends of the hollow fiber membrane to the outside of the resin partition wall. It is also possible to provide one or more permeate ports in the middle of the outer cylinder.

In the membrane module using the hollow fiber membrane or the tubular membrane, flexibility can be imparted by forming the outer cylinder with a plastic tube. In this case, the outer diameter of the tube may be different from part to part, or the tube may have a bent portion. Can be formed.

Regarding the membrane fractionation performance, the entire range of reverse osmosis membranes, ultrafiltration membranes and microfiltration membranes can be used.

Further, the present invention is not limited to the hollow fiber membrane module and the tubular membrane module described above, but can be applied to a module having another structure, for example, a spiral membrane module.

(Effect of the Invention) The membrane module of the present invention has the configuration as described above,
The pusher is accommodated in the joint body, and the locking of the retaining ring to the end of the membrane module can be released by the operation of this pusher, and the membrane module can be easily separated from the joint. The cleaning residual liquid can be surely removed from the module by removing. Therefore, the permeated liquid can be prevented from being contaminated by the residual chemicals or the like when the membrane module is restarted. In addition, since the joint is a one-touch insertion type, the membrane module and the pipe can be connected easily and quickly.

[Brief description of drawings]

The drawings are explanatory views showing an embodiment of the present invention. A ... Membrane module, B ... Fitting, 4 ... Fitting body, 41
…… Rubber ring, 42 …… Prevention ring, 45 …… Pusher.

Claims (1)

[Scope of utility model registration request] 1. A rubber ring for sealing between the inner surface of the joint body and the end of the membrane module, and a retaining ring for locking the outer surface of the end of the membrane module in the joint body into which the end of the membrane module is inserted. A membrane module, wherein a pipe joint accommodating a pusher for releasing the locking by expanding the diameter of the retaining ring is attached to the end of the membrane module.