KR20190048998A - Membrane unit for immersion type membrane separation system - Google Patents

Abstract

The present invention relates to a separation membrane unit for an immersion type membrane separation apparatus, and more particularly, to a lightweight separation membrane unit for an immersion type membrane separation apparatus, which comprises: a pair of vertical frames erected to be supported on the bottom; a left upper horizontal frame, a right upper horizontal frame, a left lower horizontal frame, and a right lower horizontal frame for connecting the vertical frames; a lifting bar having a pair of bar brackets facing each other at the center of an upper portion of the vertical frames to protrude to an upper side of the vertical frames, coupled between the bar brackets, and formed with a lifting ring at a central portion thereof; a suction header having a pair of header brackets facing each other at one side of an upper end of the vertical frames to protrude to the upper side of the vertical frames, coupled between the header brackets, and having a flow path formed therein and a suction pipe formed in one side thereof; a left upper module fixing stand coupled to the bottom of the suction header and having a plurality of holes at the same interval; a right upper module fixing stand coupled to an upper surface of the upper right horizontal frame, and having a plurality of holes at the same interval; a left lower module fixing stand coupled to an upper surface of the left lower horizontal frame, and having a plurality of holes at the same interval; a right lower module fixing stand coupled to an upper surface of the right lower horizontal frame, and having a plurality of holes at the same interval; a hollow fiber membrane module having an upper header coupled between the left upper module fixing stand and the right upper module fixing stand, and a lower header coupled between the left lower module fixing stand and the right lower module fixing stand; and an aeration pipe coupled to the bottom of a horizontal frame, having a plurality of air holes, and connected to an external air pump to aerate compressed air through the air holes.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a light-

The present invention relates to a separation membrane unit, and more particularly, to a lightweight separation membrane unit for a submerged membrane separation apparatus that is light in weight and simple in construction.

The separation membrane unit for the immersion membrane separator is a device for purifying the wastewater or sewage by filtering and filtering foreign matters such as dissolved pollutants and microorganisms and suspended substances contained in the waste water and sewage through a biological process or a physicochemical process.

The separation membrane is generally a hollow fiber membrane, and a hollow fiber membrane module is used to collect and bundle hundreds to several thousands of hollow fiber membranes in order to increase the processing capacity and integrate within a limited space.

In order to lighten the separator unit, it is important to select the material, but it is necessary to change the structure so that the components constituting the separator unit are appropriately disposed without interfering with each other. In particular, do. Where the other components refer to the location of the suction header or diffuser.

The hollow fiber membrane module is formed by joining the hollow fiber membranes between the upper and lower spaced apart portions. There is a difference in interference between the other components depending on the forming position and shape of the connecting hole communicating with the flow path inside the header, and the protruding direction of the connecting hole.

Thus, due to the organic relationship between the constituent elements of the separation membrane unit, the influence on the weight reduction is large, and the manufacturing process is simple and the simplicity of the structure is greatly influenced. Up to now, only the functionality of the separation membrane unit has been focused There is a problem in that weight saving and ease of the manufacturing process which are important in terms of commercial competitiveness of the apparatus are not considered.

The air diffuser functions to discharge the compressed air in order to prevent clogging of the micropores when the purified water is sucked through the hollow fiber membrane module. Since the air diffuses intermittently, the foreign matter flows in through the air hole during the time of no aeration, Particularly heavy ones such as sand are piled up in the inside of the mountain organs, which causes degeneration of the organs. Particularly, foreign substances such as sand are discharged like air during aeration to damage the hollow fiber membrane. However, if it is opened only when it is augmented like a valve or a nozzle to prevent foreign substances from entering the air hole of an engine, the construction becomes complicated and the manufacturing cost increases, but there is also a problem that frequent trouble occurs.

Korean Patent Publication No. 10-2012-133601 (2012.12.11) Korean Patent Publication No. 10-2005-116566 (December 13, 2005) Korean Patent Publication No. 10-2006-7874 (2006.01.26) Korean Patent No. 10-1554924 (2015.09.16)

In order to solve the above-mentioned problems, the present invention has been made to change the shape of a specific constituent part so as to be light and simple, and to greatly change the structure and shape of the hollow fiber membrane module. And which can be discharged immediately even if the light-emitting diaphragm is separated from the light-emitting diaphragm.

In order to achieve the above object, the present invention provides a separation membrane unit separator for a submerged membrane separation apparatus, comprising: a pair of longitudinal frames erected to be supported on a bottom; An upper left transverse frame, an upper right transverse frame, a lower left transverse frame, and a lower right transverse frame that connect between the longitudinal frames; A bar lifting bar which is opposed to the center of the longitudinal frame and is formed so that a pair of bar brackets protrude upward from the longitudinal frame and are coupled between the pair of bar brackets, A pair of header brackets protruding upward from the longitudinal frame, the pair of header brackets being coupled to each other between the pair of header brackets, a flow path formed in the pair of header brackets, and a suction header ; An upper left module holder coupled to the bottom of the suction header and having a plurality of apertures formed at equal intervals; An upper right module frame coupled to the upper surface of the right upper frame and formed with a plurality of apertures at equal intervals; A left lower module fixing table coupled to an upper surface of the left lower frame and having a plurality of apertures formed at equal intervals; A lower right module frame coupled to an upper surface of the lower right transverse frame and having a plurality of apertures formed at equal intervals; A top header is coupled between the upper left module holder and the upper right module holder, and a lower header is coupled between the lower left module holder and the lower right module holder; And an air diffuser coupled to a bottom portion of the transverse frame and having a plurality of air holes formed therein and connected to an external air pump to aerate compressed air through an air hole, Lightweight separator unit.

In addition, the hollow pipe constituting the air diffusing pipe is formed with a plurality of distribution pipes each having a plurality of air holes, and the distribution pipe is formed with a foreign matter discharge pipe communicating with the distribution pipe and extending downwardly, Air is discharged through the air hole due to the difference in water pressure when air is supplied to the distribution pipe through the air hole, but air is not discharged to the foreign matter discharge pipe communicating with the distribution pipe, Wherein the hollow fiber membrane module is constructed by connecting a hollow fiber membrane between an upper header and a lower header, wherein the upper header and the lower header are connected to each other, The vertical and horizontal connectors formed at both ends are perpendicular to each other As it is ranging, and include the foreign material discharge pipe characterized in that the variable-length pipe which is variable is formed as a sliding insert or pull to push foreign matter sandwiched between the exhaust pipe.

According to the present invention, since only one suction header is formed to be coupled with the connector of the hollow fiber membrane module, the structure is simple and lightweight. In the present invention, the vertical and horizontal connectors formed in the hollow fiber membrane module are vertically and horizontally aligned with respect to one another. However, in the present invention, So that even if the hollow fiber membrane module swings due to the atmospheric pressure, both the vertical direction and the horizontal direction can be held tightly through the module fixing frame. In addition, foreign substances such as sand are left in the air holes formed in the acid organs, and they can be discharged like air during the aeration to act as bullets. However, It is possible to prevent the damage of the hollow fiber membrane.

1 is an assembled perspective view of a separation membrane unit according to the present invention.
2 is a perspective view of a main part of a separation membrane unit according to the present invention.
3 is a view illustrating a state in which the hollow fiber membrane module according to the present invention is coupled to a module fixing table.
4 is an enlarged view of " A " in Fig.
5 is an enlarged view of " B "
6 is a cross-sectional view of a hollow fiber membrane module according to the present invention coupled to a module fixture.
7 shows a diffuser of another embodiment according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, a pair of longitudinal frames 110 standing up to be supported on the floor are spaced apart. The longitudinal frame 110 is preferably made of stainless steel so that the material does not rust in water. The longitudinal frame 110 is a rectangular steel plate, and the height of the longitudinal frame 110 and the distance between the longitudinal frames determine the size of the separator unit.

The upper portion of the longitudinal frame 110 is joined with the upper left transverse frame 120 and the upper right transverse frame 130 interconnecting the longitudinal frames. The upper left transverse frame 120 connects the upper left portion of the longitudinal frame 110 to each other and the upper right transverse frame 120 integrally joined with the upper right portion of the longitudinal frame 110 while interconnecting them, Strengthen.

A lower portion of the longitudinal frame 110 is coupled to a lower-left transverse frame 140 and a lower-right transverse frame 150 that interconnect the longitudinal frames 110. The lower left transverse frame 140 connects the lower left portion of the longitudinal frame 110 to each other and the lower right transverse frame 150 integrally joins the lower right portion of the longitudinal frame 110 to each other to strengthen the structure.

The upper end of the longitudinal frame 110 is formed with a cigarette ring 165 which can lift or lower the separation membrane unit using a mechanical device such as a crane, The lifting bar 160 is engaged. When the lifting bar 160 is positioned inside the longitudinal frame 110, a bar bracket bbk made of a steel plate is formed on the longitudinal frame 110 to interpose the installation space of a hollow fiber membrane module And the lifting bar 160 is coupled to the lifting bar 160. Thus, the lifting bar 160 is positioned slightly higher than the longitudinal frame 110, and a lifting loop 165 is formed in the center thereof. Since the claw ring 165 is formed at the center of gravity, it is possible to maintain the balance without tilting when the separator unit is lifted or lowered.

A suction header 170 is coupled to one side of the upper end of the longitudinal frame 110 in the lateral direction. The suction header 170 is connected to a suction pump outside the separation membrane unit to form a negative pressure, and a flow path is formed therein so that a fluid can flow. Since the suction header 270 is also located inside the longitudinal frame 110, it interferes with the installation space of the hollow fiber membrane module, so that a header bracket hbk made of a steel plate is formed at the upper end of the longitudinal frame 110, (Not shown). At one side of the suction header 170, a suction pipe 172 communicating with a flow path inside the suction header is formed and connected to an external pump for forming a negative pressure.

An upper left module fixing base 180 having a plurality of holes formed at equal intervals is coupled to the bottom surface of the suction header 170. The hole bh is formed at a position where the upper side vertical connector vc of the hollow fiber membrane module 230 will be inserted and a channel hole (not shown) corresponding to the hole is formed in the bottom surface of the suction header, And the flow path formed inside the suction header 170 are communicated with each other. The hole bh of the upper left module fixing table 180 is formed in the vertical direction.

An upper right module frame 190 having a plurality of holes bh formed at equal intervals is coupled to an upper portion of the upper right frame 130. The hole bh is where the upper horizontal connector lc of the hollow fiber membrane module 230 is inserted. The hole bh of the upper right module fixing table 190 is formed in the horizontal direction. When a plurality of hollow fiber membrane modules 230 are fitted to the upper right module fixing table 190, the upper bar module 190 may be pivoted or lifted due to an external force applied to the hollow fiber membrane module 230 during use. bar. Both ends of the push bar are welded to the longitudinal frame 110, a bolt hole is formed in the middle of the push bar, a bolt hole corresponding to the bolt hole is formed in the upper right module fixing base 190, And a bolt hole corresponding to the bolt hole 130 is formed and fastened by bolts so that the bar pushes the upper right module fixing table 190 firmly.

A lower left module fixing base 210 having a plurality of holes formed at equal intervals is coupled to an upper portion of the lower left transverse frame 140. The hole is where the lower side vertical connector vc of the hollow fiber membrane module 230 is inserted. The hole of the left lower module fixing table 210 is formed in the vertical direction.

A lower right module fixing table 220 having a plurality of holes bh formed at equal intervals is coupled to an upper portion of the right lower transverse frame 150. The hole is where the lower side horizontal connector lc of the hollow fiber membrane module 230 is inserted. The hole bh of the right lower module fixing table 220 is horizontal. When a plurality of hollow fiber membrane modules 230 are fitted to the lower module fixing table 220, they may be swung or lifted due to an external force applied to the hollow fiber membrane module 230 during use. Therefore, a push bar bar. Both ends of the push bar are welded to the longitudinal frame 110 to form a bolt hole in the middle of the push bar and to form a corresponding bolt hole in the lower right module mount 220 by avoiding the hole, A bolt hole corresponding to the transverse frame 150 is formed and bolted to press the right lower module fixing table 220 firmly.

3 through 6, the hollow fiber membrane module 230 is coupled between the upper left module fixing bar 180 and the lower left module fixing bar 210, between the upper right module fixing bar 190 and the lower right module fixing bar 220. The hollow fiber membrane module 230 has a plurality of hollow fiber membranes 236 connected between the upper header 232 and the lower header 234. The upper header 232 has a flow path formed therein, a vertical connection vc is formed at the left end, and a horizontal connection lc is formed at the right end. A hole is formed at the center of the vertical connector vc, and the hole communicates with a flow path formed inside the upper header 232.

The vertical connector vc formed in the upper header 232 is inserted into the hole bh of the upper left module fixture 180 and communicated with the flow path of the suction header 170 while being coupled. On the outer circumference of the vertical connection port (vc), an elastic O-ring such as a rubber ring is formed so as to maintain watertightness even in fluid pressure acting upon suction when inserted into the hole. The vertical connector vc is provided with a plurality of reinforcing pieces rf for reinforcing the structure in order to prevent breakage of the hollow fiber membrane module 230 when the hollow fiber membrane module 230 is rocked under a water pressure in water in the longitudinal direction of the vertical connector vc.

And is inserted into the hole bh of the upper right module fixing table 190 and joined to the horizontal connecting hole lc formed at the right end of the upper header 232. [ However, since the hollow fiber membrane module 230 may be damaged by impact force when it is swung by the atmospheric pressure, an O-ring having a cushion like a rubber ring is formed So that the impact force can be absorbed.

The vertical connector vc formed at the left end of the lower header 234 is inserted and coupled to the hole bh of the lower left module fixing table 210. The lower header 234 is not provided with a passage therein and there is no hole in the vertical connection vc formed in the lower header 234 so that it is not necessary to maintain the watertightness. However, An O-ring of an elastic material is formed on the outer periphery of the vertical connector vc.

A horizontal connector lc is formed at the right end of the lower header 234. And inserted into the hole of the right lower module fixing table 220 at the horizontal connection lc formed at the right end of the lower header 134. [ However, since the hollow fiber membrane module 230 may be damaged by impact force when it is swung by the atmospheric pressure, an O-ring having a cushion like a rubber ring is formed So that the impact force can be absorbed.

The vertical connector vc formed in the upper header 132 and the lower header 134 are different from each other in the vertical direction and the horizontal connector lc in the horizontal direction and both of them are formed in one direction (vertical direction or horizontal direction) It is advantageous to prevent the hollow fiber membrane module 230 from swinging in one direction when the hollow fiber membrane module 230 swings due to the atmospheric pressure, but it becomes fragile in the other direction. When the vertical connector vc in the vertical direction and the horizontal connector lc in the horizontal direction are formed in the hollow fiber membrane module, the vertical connector vc formed in the upper header and the lower header when swinging in the vertical direction, And the left lower module retention base 210, the swing motion is greatly reduced. When swinging in the horizontal direction, the swing motion is restricted by the upper right module fixing table 190 and the lower right module fixing table 220, .

At the bottom of the longitudinal frame, an air diffuser 250 is connected to an external air pump to aerate the compressed air to the hollow fiber membrane module. The air pipe 260 is formed with a plurality of air holes ah to supply compressed air to the hollow pipe 260 so that air is periodically aerated through the air hole ah.

7, a plurality of distribution pipes 270 are formed at the bottom of the hollow pipe 260 of the diffuser pipe, and a plurality of air holes ah are formed in the distribution pipe 270 . The distribution pipe is connected to the hollow pipe 260 through the auxiliary distribution pipe 272 so that the compressed air passing through the hollow pipe 260 flows through the distribution pipe 270 and is aerated through the air hole ah. It is. At the both ends or the bottom of the distribution pipe, several foreign matter discharge pipes 280 are formed. The foreign matter discharge pipe 280 is communicated with the distribution pipe 270 and is formed downward, and its lower portion is opened.

The distribution pipe 280 is inserted into the distribution pipe and assembled with the variable pipe 282, which can be varied in length as required. The variable pipe 282 is adapted to be pulled out or pushed in as the fishing rod so as to vary its length.

The operation according to the present invention configured as described above will be described as follows.

When the suction pump is operated after connecting the suction pump 172 to the suction pipe 172 of the suction header 170, the microfluid of the hollow fiber membrane 232 is compressed by the negative pressure, Only integer is sucked out through.

If the process of extracting the purified water through the hollow fiber membrane is continued for a long time, the fine pores may be clogged. In this case, when the compressed air is blown through the air diffuser 250 at a predetermined interval, compressed air is aerated through the air hole ah. The aerated compressed air heats out the contaminants attached to the micropores of the hollow fiber membrane 236 to prevent the micropores from clogging.

The aeration air provides strong fluidity to the fluid, thus oscillating the entire hollow fiber membrane module 230 as well as the hollow fiber membrane 236 and the entire separation membrane unit. When the hollow fiber membrane module 230 is rocked, the impact force is transmitted to the horizontal connection port lc and the vertical connection port vc to cause fatigue failure. However, the vertical connection vc may be transmitted to the upper left module fixture 180 and the lower left module fixture 210). The horizontal connection lc is limited in its shaking motion by the upper right module fixing table 190 and the lower right module fixing table 220. [ In other words, excessive vibration is limited to prevent fatigue breakdown.

Foreign matter contained in the wastewater does not flow into the hollow pipe 260 through the air hole ah when the air is discharged through the air hole ah of the hollow pipe 260. However, The foreign matter flows into the hollow pipe 260 through the air hole ah. Particularly, when a foreign matter having a large specific gravity such as sand is once introduced into the hollow pipe 260, it is not discharged even when it is aerated, so that it is stacked on the hollow pipe and occupies a space, thereby deteriorating the function of the air diffuser. When it is augmented, it collides with the hollow fiber membrane at high speed like a bullet when it is discharged together with the air, and if it is repeated, the hollow fiber membrane may be damaged in the end. Since there is a foreign matter discharge pipe extending downward, The sand that entered through it passes straight away without being stacked.

That is, foreign matter and sand are not accumulated in the hollow pipe 260, so that it does not act as a bullet when the air is discharged. Since the lower portion of the foreign matter discharge pipe communicating with the distribution pipe is always open, foreign matter such as sand can be rolled when it is introduced, but it can be discharged immediately by gravity. However, the air pressure can not escape to the outside, Since the water pressure difference is generated by the height between the distribution pipe 270 and the lower end of the foreign matter discharge pipe 280 due to the water pressure, Does not escape. At this time, the variable pipe 290 is pulled out so that the height difference between the distribution pipe 270 and the lower end of the foreign matter discharge pipe (actually, the variable pipe) is increased to a large value .

110: longitudinal frame 120: upper left transverse frame
130: Right upper frame 140: Left lower frame
150: right lower frame 160: lifting bar
165: lifting ring 170: suction header
172: suction pipe 180: upper left module fixing table
190: upper right module holder 210: lower left module holder
220: Lower right module holder 230: Hollow fiber membrane module
232: upper header 234: lower header
236: hollow fiber membrane
250: diffuser pipe 260: hollow pipe
270: distribution pipe 280: foreign matter discharge pipe
290: variable pipe

Claims (4)

A separation membrane unit for an immersion type membrane separation device,
A pair of longitudinal frames (110) raised to be supported on the floor;
An upper left transverse frame 120, an upper right transverse frame 130, a lower left transverse frame 140, and a lower right transverse frame 150 which connect between the longitudinal frames;
A lifting bar 160 having a pair of bar brackets which are opposed to each other at the center of an upper portion of the longitudinal frame so as to protrude upward from the longitudinal frame and are coupled between the pair of bar brackets and have a crown ring at a center thereof;
A pair of header brackets protruding upward from the longitudinal frame, the pair of header brackets being coupled to each other between the pair of header brackets, a flow path formed in the pair of header brackets, and a suction header (170);
An upper left module fixture 180 coupled to the bottom of the suction header and having a plurality of apertures formed at equal intervals;
An upper right module fixing table 190 coupled to the upper surface of the right upper frame and having a plurality of apertures formed at equal intervals;
A left lower module fixing table 210 coupled to an upper surface of the lower left transverse frame and having a plurality of apertures at equal intervals;
A lower right module fixing table 220 coupled to an upper surface of the right lower transverse frame and having a plurality of apertures formed at equal intervals;
A hollow fiber membrane module (230) coupled between the upper left module holder and the upper right module holder, the lower header coupled between the lower left module holder and the lower right module holder;
And an air diffuser (250) coupled to a bottom of the transverse frame and formed with a plurality of air holes, the air diffuser being connected to an external air pump to aerate the compressed air through an air hole Lightweight separator unit for membrane separation equipment. The method according to claim 1,
Wherein a plurality of air distribution pipes are formed in the hollow pipe constituting the air diffusing pipe and the distribution pipe is formed with a foreign matter discharge pipe communicating with the distribution pipe and extending downwardly and being always open at the bottom, The air is discharged through the air hole due to the pressure difference when the air is supplied through the air hole, but the air is not discharged to the foreign matter discharge pipe communicating with the distribution pipe, but the relative specific gravity And the foreign matter larger than the water can be discharged without being stacked in the distribution pipe. The method according to claim 1,
Wherein the hollow fiber membrane module is formed by connecting a hollow fiber membrane between an upper header and a lower header, wherein a vertical connector and a horizontal connector formed at both ends of the upper header and the lower header are perpendicular to each other, Lightweight separator unit for separator. 3. The method of claim 2,
Wherein the foreign matter discharge pipe is formed with a variable pipe which is inserted into a foreign matter discharge pipe and is slidable when being pushed or pulled, thereby varying the length of the variable pipe.

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