KR20160060344A - Pressurized hollow fiber membrane module and filtration apparatus comprising the same - Google Patents

Abstract

The present invention relates to a pressurized hollow fiber membrane module including: a housing; a hollow fiber separation membrane formed in the housing; a side cap which is joined to the housing and has a first groove formed at an outer side along a circumferential direction thereof; an end cap which is disposed at an end of the side cap and has a second groove formed at an outer side along a circumferential direction thereof; a pressurization fixing support coupled to the first groove and the second groove at both ends thereof; and a leak proof ring for blocking a connection portion between the side cap and the end cap, the leak proof ring being disposed inside the pressurized fixing stand, so that durability thereof is excellent and a joining error with another tube can be minimized.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressurized hollow fiber membrane module and a filtration apparatus including the hollow fiber membrane module,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressurized hollow fiber membrane module and a filtration apparatus including the same. More particularly, the present invention relates to a pressurized hollow fiber membrane module which can easily open and close an end cap, effectively block leakage, To a hollow fiber membrane module and a filtration device including the same.

In general, membrane filtration technology is a method to pass polluted water through a membrane as a filter medium and to obtain clean filtered water by precisely removing impurities in raw water according to the pore size of the separation membrane. It is a small complex of modern technology.

Membrane module for obtaining clean filtration water includes a submerged membrane module for producing filtered water by generating a negative pressure with a suction pump and a pressurized membrane module for generating a positive pressure by a pressurizing pump. That is, the immersion membrane module means a method of producing filtration water by pulling the separation membrane to the raw water tank containing the contaminated water and drawing it by the suction pump, and the pressure membrane module pushes the contaminated water to the pressure vessel by the pressure pump to produce filtrate water .

In this case, the shape of the separation membrane is classified into a hollow fiber type, a flat sheet type, a tubular type, and a spiral wound type. Among them, the separation membrane that can be charged into the pressure vessel is a hollow tube type, a tubular type, and a spiral type. However, a hollow type separation membrane having the largest separation membrane area is most advantageous. The type to be used after porting (adhesion) is called a pressurized hollow fiber membrane module.

When a general pressurized hollow fiber membrane module is used as a filtration device, the operation method is divided into four steps of water-filtration-backwash-discharge, and each process is performed continuously. Hereinafter, each step will be described with reference to Fig.

The water supply step is a process of filling raw water contaminated with the pressurized hollow fiber membrane module. The inflow water valve is opened and the raw water is pushed by a pressurizing pump. At the same time, the concentrated water valve is opened to fill the raw water by discharging the air inside the membrane module. Typical operating time for the watering stage is between 20 and 60 seconds.

The filtration step is a process of filtering the raw water contaminated through the pressurized hollow fiber membrane module. The raw water valve is opened to force raw water contaminated by the pressurizing pump to the separation membrane. At the same time, the concentrated water valve is closed and the treated water valve is opened to produce filtered water do. The typical operating time of the filtration step is between 20 and 40 minutes.

The backwashing step is a process of washing the used surface of the contaminated membrane by the time for producing the filtered water in the filtration step and discharging the washed water by opening the treated water valve and pushing the clean water to the reverse pressure pump backward, The membrane is once again cleaned by flushing the used surface and simultaneously opening the reverse air valve to shake the membrane with the appropriate amount of air. The rinse water and air used here are continuously discharged through the concentrated water pipe by opening the concentrated water valve together with the valves described above. The typical operating time of the backwash step is between 30 and 90 seconds.

The discharging step is a step of discharging the high-concentration raw water remaining in the filtration / backwashing step to the outside of the membrane module. The concentrated water valve is opened to prevent the pressure inside the membrane module. At the same time, . The typical operating time of the discharge phase is between 30 and 90 seconds.

When a general pressurized hollow fiber membrane module is used as a filtration device, it is required to have durability because continuous operation is performed by the above-described method and an average pressure of 1 to 3 kg _f / cm ² is generated in the membrane module. In particular, The end cap and the side cap should be well joined to avoid the problem. Also, when repairing the separator, the end cap must be opened.

In addition, when installing dozens to thousands of pressurized hollow fiber membrane modules on actual sites as shown in FIG. 2, it is necessary to finely connect a hollow central pipe connected to the pipes of each module. In the actual site, An error of about 1 to 2 mm is caused when the module is connected to the process / discharge pipe.

When the conventional pressurized hollow fiber membrane module is installed, the force applied to the membrane module due to such a joint error accumulates with time, and when it is left for a long time, leakage occurs between the end cap and the side cap, Part may show fine cracks.

On the other hand, in the general pressurized hollow fiber membrane module, the bonding method of the end cap and the side cap to which the housing is bonded is classified into a screw type and a clamp type.

Screw shape is formed by threading on the end cap or end cap fixture and it is connected by rotation using it. However, if rotation of the end cap is not properly done, breakage and leakage of the membrane module may occur, There is also the possibility of failing to connect with the piping. In this case, an end cap rotating device may be fabricated and used to easily rotate the end cap. However, since it is bulky and the membrane modules must be separated and used separately, inconvenience arises. Further, in the case of such a screw type, a rubber ring for preventing leakage is mostly formed inside the end cap and the side cap.

In the clamp type, the end cap and the side cap are clamped to each other by a clamp. In such a clamp type, the leak-proof rubber ring exists inside the end cap and the side cap as in the case of the screw type. Clamp type has advantages of easy opening and closing of end cap as compared with screw type, but if clamp is used for a long time, there is possibility of breakage of the part clamped by clamp in end cap and side cap, and leakage may occur. In addition, when installing the actual membrane module, it is not possible to solve the positional error of the joint portion with the other pipe as described above.

Although there are other screw shapes and clamp shapes as well as the above-mentioned screw shapes and clamp shapes, most of them have not solved the positional errors of the joint portions with other pipes.

For reference, the technique as a background of the present invention is disclosed in Japanese Patent Laid-Open Nos. 10-2014-0014595 and 10-1212800.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems of the prior art, and it is an object of the present invention to provide a membrane module which can easily open and close an end cap, And a filtration device including the same.

As means for solving the above-mentioned technical problem,

The present invention relates to a semiconductor device comprising: a housing; A hollow-type separator formed inside the housing; A side cap joined to the housing and having a first groove formed along the circumferential direction on an outer side thereof; An end cap disposed at an end of the side cap and having a second groove formed along the circumferential direction on an outer side thereof; A compression fixture having both ends connected to the first groove and the second groove; And a leakage preventing ring interposed between the side cap and the end cap to block the connection portion between the side cap and the end cap.

In this case, both ends of the leakage preventing ring can be inserted into the first groove and the second groove.

In this case, the sectional structure of the housing, the side cap, and the end cap may be circular or polygonal.

In this case, the side cap and the end cap may have different sectional structures from the housing.

In this case, the leakage preventing ring and the compression mount may have the same cross-sectional structure as the side cap and the end cap.

In this case, the cross-sectional structure of the first groove and the second groove may be any one selected from the group consisting of a square, a rectangle, and a rectangle inclined inwardly.

In this case, a third groove may be formed along a circumferential direction at a connecting portion between the side cap and the end cap, and the leakage preventing ring may be inserted into the third groove.

In this case, a leakage preventing ring may be additionally provided at an interface between the side cap and the end cap.

In this case, the leakage preventing ring is made of an elastic material, so that when the end cap is connected to another pipe, the end cap can be made to flow from side to side with respect to the side cap.

Further, the present invention provides a filtration apparatus including the above-described pressurized hollow fiber membrane module.

According to the present invention, the leak-preventive ring is formed on the outer side of the side cap and the end cap, and has a cross-sectional structure such as a substantially U-like shape, so that fluidity of the end cap can be ensured when the end cap is connected to other piping.

In addition, due to the coupling structure of the leakage preventing ring and the pressing and fixing block, not only the opening and closing of the end cap can be easily performed, but also leakage of the fluid can be effectively prevented.

1 is a view illustrating a method of operating a general pressurized hollow fiber membrane module filtration apparatus,
FIG. 2 is a view showing a state in which a general pressurized hollow fiber membrane module is installed in an actual site,
3 is a sectional view of a pressurized hollow fiber membrane module according to a preferred embodiment of the present invention,
Fig. 4 is an enlarged view of a portion A of the pressurized hollow fiber membrane module shown in Fig. 3,
5 is a cross-sectional view of the pressurized hollow fiber membrane module shown in FIG. 3, a cross-sectional structure of a leakage preventing ring and a compression fixture,
FIG. 6 is a cross-sectional view showing a modified example of the groove and the leakage preventing ring of the pressurized hollow fiber membrane module shown in FIG. 4,
FIG. 7 is a cross-sectional view showing a state in which a leakage preventing ring is additionally provided inside the pressurized hollow fiber membrane module shown in FIG. 4;
FIG. 8 is a view showing a bonded state of a pressurized hollow fiber membrane module and other pipes according to a preferred embodiment of the present invention. FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly explain the present invention, parts not related to the description are omitted, and similar parts are denoted by similar reference numerals throughout the specification.

FIG. 3 is a cross-sectional view of a pressurized hollow fiber membrane module according to a preferred embodiment of the present invention, and FIG. 4 is an enlarged view of a portion A of the pressurized hollow fiber membrane module shown in FIG.

3 and 4, a pressurized hollow fiber membrane module 100 according to a preferred embodiment of the present invention includes a housing 110, a hollow fiber separator 120, a side cap 130, an end cap 140, a compression mount 150, and a leak-proof ring 160.

The housing 110 has a hollow cylindrical structure into which the contaminated raw water flows.

The hollow fiber separator 120 is provided along the longitudinal direction inside the housing 110 for filtering the polluted water supplied to the housing 110. In this case, both ends of the hollow fiber separator 120 are potted to a certain thickness on the side cap 130, thereby preventing the separation. The porting thickness of the hollow fiber separator 120 is formed from the upper chamber of the port 131 to the end of the side cap 130 so as not to interfere with the flow of the fluid flowing through the port 131 of the side cap 130 .

The side cap 130 is for mounting the end cap 140 and is joined to the outside of both ends of the housing 110. A port 131 for introducing or discharging various fluids is formed at one side of the side cap 130. It goes without saying that the port 131 is in communication with the housing 110. [ On the other hand, a first groove 132 is formed on the outer side of the upper end of the side cap 130 along the circumferential direction. The first groove 132 is for insertion of the compression fitting 150 and the leakage preventing ring 160, and will be described later in detail.

The end cap 140 is provided at the end of the side cap 130 for connection with other piping, and a port 141 for the inflow and outflow of various fluids is formed above or below the end cap 140. In this case, a second groove 142 is formed on the outer side of the end cap 140 along the circumferential direction like the side cap 130, which will be described later in detail.

The compression mount 150 includes a first groove 132 in the form of wrapping the waterproof ring 160 for bonding, fixing and protecting the side cap 130, the end cap 140 and the waterproof ring 160, And the second groove (142). The compression set 150 has a fixed key concept that acts as a simple bolt, such as a bolt and a nut.

The waterproof ring 160 prevents water leakage occurring at the joint between the side cap 130 and the end cap 140. In the present invention, the waterproof ring 160 is disposed between the side cap 130 and the end cap 140 140).

The leakage preventing ring 160 has a U-shaped cross-sectional structure and is inserted into the first groove 132 of the side cap 130 and the second groove 142 of the end cap 140, The end portion of the end cap 140 is completely cut off. However, the shape of the leak-proof ring 160 does not necessarily have a cross-sectional structure of a C-shape, but it is also possible to have a cross-sectional structure of a C-shaped or a rhombohedron interposed or modified simply inside the compression mount 150 as described later.

When the waterproof ring 160 is formed on the outer side of the side cap 130 and the end cap 140 as described above, the damage of the joint portion between the side cap 130 and the end cap 140 And it is also possible to overcome a joint error of about 1 to 2 mm when connecting the end cap 140 and other piping.

As described above, the pressurized hollow fiber membrane module according to the preferred embodiment of the present invention has been described. The present invention is not limited to the above-described configuration and can be modified into various forms. Modifications of the present invention will be described in detail below with reference to the drawings.

5 is a view showing the cross-sectional structure of the pressurized hollow fiber membrane module shown in FIG. 3, and the cross-sectional structure of the leakage preventing ring and the compression bonding table.

5, the cross-sectional structures of the housing 110, the side cap 130 and the end cap 140 may be polygonal or circular, such as triangular, rectangular, hexagonal, octagonal, The cross-sectional structure of the side cap 130 and the end cap 140 may be configured differently from that of the housing 110. In this case, it is needless to say that the compression mount 150 and the water leakage preventing ring 160 must be deformed to have the same cross sectional structure according to the shapes of the side cap 130 and the end cap 140.

FIG. 6 is a cross-sectional view showing a modified example of the recess and the leakage preventing ring of the pressurized hollow fiber membrane module shown in FIG. 4, and FIG. 7 is a cross-sectional view of the pressurized hollow fiber membrane module shown in FIG. Fig.

6, the first groove 132 of the side cap 130 and the second groove 142 of the end cap 140 may have various cross-sectional structures.

Specifically, the cross-sectional structure of the grooves 132 and 142 may be a square or a rectangle (see Figs. 6A and 6B). In this case, the leak-proof ring 160 is interposed inside the compression mount 150 so as to block the connection portion between the side cap 130 and the end cap 140, or has a cross-sectional structure of a C-like shape as described above Both ends can be inserted into the recesses (132) and (142).

In addition, the cross-sectional structure of the recesses 132 and 142 may be a rectangular shape whose inner surface is inclined (see (c) of FIG. 6) as the depth increases. In this case, the leak-proof ring 160 has a cross-sectional structure of a C-shape tapered inward according to the shape of the recesses 132 and 142, and both ends are inserted into the recesses 132 and 142. With this configuration, The ring 160 is more firmly pressed on the grooves 132 and 142 so that the separation and leakage can be effectively prevented.

It is also possible to form a third groove 143 in addition to the first groove 132 and the second groove 142 (see FIG. 6 (d)). The third groove 143 is formed along the circumferential direction outside the connection portion between the side cap 130 and the end cap 140. In this case, the waterproof ring 160 includes the first groove 132, the second groove 142 and the third groove 143, respectively. With this configuration, since the middle protruding portion of the leak-preventive ring 160 presses the contact portion between the side cap 130 and the end cap 140, the double leakproof effect can be obtained.

7, the inner side of the side cap 130 and the end cap 140, more specifically, the joint between the side cap 130 and the end cap 140, That is, it is also possible that a waterproof ring 161 is additionally provided on the interface.

FIG. 8 is a view showing a bonded state of a pressurized hollow fiber membrane module and other piping according to a preferred embodiment of the present invention.

The leakage preventing ring 160 is coupled to the outer side of the side cap 130 and the end cap 140 in a substantially U-shaped structure as described above. The material of the leakage preventing ring 160 is made of a flexible elastic material . 8, when the other piping 200 is joined to the upper end of the end cap 140, the end cap 140 is connected to the side cap 130 It is possible to overcome the joint error of about 1 to 2 mm, and the installation can be made very easy.

As described above, the pressurized hollow fiber membrane module according to the preferred embodiment of the present invention has been described. When the pressurized hollow fiber membrane module of the present invention is applied to a filtration device, it is possible to obtain all the effects of the above-described structure as it is.

The preferred embodiments of the present invention have been described in detail with reference to the drawings. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

Therefore, the scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning, range, and equivalence of the claims are included in the scope of the present invention. .

100: pressurized hollow fiber membrane module 110: housing
120: hollow fiber separator 130: side cap
131: port 132: first groove
140: end cap 141: port
142: second groove 143: third groove
150: compression set 160, 161: leakproof ring
200: Piping

Claims (10)

A housing;
A hollow-type separator formed inside the housing;
A side cap joined to the housing and having a first groove formed along the circumferential direction on an outer side thereof;
An end cap disposed at an end of the side cap and having a second groove formed along the circumferential direction on an outer side thereof;
A compression fixture having both ends connected to the first groove and the second groove; And
A waterproof ring interposed inside the compression mount so as to block a connection portion between the side cap and the end cap;
Wherein the hollow fiber membrane module comprises: The method according to claim 1,
And both ends of the leakage preventing ring are inserted into the first groove and the second groove. The method according to claim 1,
Wherein the cross-sectional structure of the housing, the side cap, and the end cap is circular or polygonal. The method according to claim 1,
Wherein the side cap and the end cap have different sectional structures from the housing. The method according to claim 1,
Wherein the leakage preventing ring and the compression mount have the same sectional structure as that of the side cap and the end cap. The method according to claim 1,
Wherein the cross-sectional structure of the first groove and the second groove is any one selected from the group consisting of a square, a rectangle, and a rectangle inclined inwardly. 3. The method of claim 2,
Wherein a third groove is formed along a circumferential direction at a connecting portion between the side cap and the end cap, and the leakage preventing ring is also inserted into the third groove. The method according to claim 1,
And a leakage preventing ring is additionally provided at an interface between the side cap and the end cap. The method according to claim 1,
Wherein the leakage preventing ring is made of an elastic material so that the end cap can flow laterally with respect to the side cap when the end cap is connected to other piping. A filtration device comprising a pressurized hollow fiber membrane module according to any one of claims 1 to 9.

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