KR20190090460A - 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 device, which comprises: a separation membrane frame; a suction pipe installed on the separation membrane frame to have a flow path inside and a plurality of tap holes communicating with the flow path in a lower part; a plurality of hollow fiber membrane modules mounted on the separation membrane frame, formed by connecting the hollow fiber membranes between headers having the flow path inside, and having outlet holes on both ends thereof to communicate with the flow path in the header; a header connector having one end inserted into and joined to the outlet hole of the header and the other end bent upward to extend toward the tap hole of the suction pipe; a suction pipe connector having one end inserted into the tap hole of the suction pipe and the other end extended toward the header connector; a middle connector interposed between the header connector and the suction pipe connector, joined to be moved while sliding vertically, and composed of an upper body and a lower body divided by a flange in the middle, wherein O-rings are inserted into ring grooves formed on the upper body and the lower body to keep watertight and 1-2 mm of clearance is formed between inner wall surfaces of the header connector and the suction pipe connector in order to make the middle connector move in a horizontal direction such that the middle connector can interlock vertical flow force to horizontal flow force delivered through the hollow fiber membrane module and the suction pipe and continuously absorb the force; and a diffuser installed on the lower part of the separation membrane frame to generate aeration to produce a water current, thereby removing foreign materials attached to the hollow fiber membrane in the hollow fiber membrane module. The present invention has a structure which can compensate for bending or twist although a header connector or a suction pipe connector is excessively bent or twisted.

Description

Membrane unit for immersion type membrane separation system

The present invention relates to a separation membrane unit of the immersion membrane separation apparatus for treating and purifying waste water or sewage, and more particularly, the hollow fiber membrane by buffering the flow generated by the aerated air pressure when the hollow fiber membrane module is installed in the membrane frame The present invention relates to a membrane unit for an immersion type membrane separation device that prevents fatigue breakdown or damage of a header connector or a suction pipe connector connected to a module.

Immersion type membrane separation device is a device for purifying wastewater by filtering and filtering out dissolved pollutants and microorganisms and suspended solids contained in wastewater by biological process or physicochemical process. As shown in Figure 1, the separation membrane unit is a unit provided with a plurality of hollow fiber membrane module that is a separation membrane required for the filtration means.

Separation membranes generally use hollow fiber membranes. In order to increase and integrate the processing capacity in a limited space, hundreds to thousands of hollow fiber membranes are used together and hollow fiber membrane modules are bundled together.

The structure of the hollow fiber membrane module generally includes a hollow fiber membrane having a predetermined length and a header fixing upper and lower ends of the hollow fiber membrane.

A filter flow path is formed in the header, and the filtered water is discharged through the hollow fiber membrane by a negative pressure such as a pump connected to the header.

The material of the header is a metal or a synthetic resin, which is generally used a lightweight resin, low cost and particularly excellent moldability.

When the hollow fiber membrane module is installed in the membrane unit, a module support for mounting a header on the membrane unit is provided, and the hollow fiber membrane module is assembled between the module supports.

The manufacture of the membrane unit is usually made of individual components and then assembled by welding or fitting, because it is advantageous in terms of productivity or product safety.

In the lower part of the hollow fiber membrane module, air is washed through the diffuser to prevent contaminants from clogging due to contaminants in the micropores of the hollow fiber membrane during the filtration process. This is applied.

In addition, the air pressure through the diffuser is not uniformly and continuously applied to the constant pressure, but a strong short air pressure is applied to the pulse pressure is repeated because the hollow fiber membrane module is forced to flow (swaying up, down, left and right).

If the hollow fiber membrane module vibrates severely, the coupling part of the header connector or suction tube connector connecting the header and the suction tube will accumulate fatigue load due to continuous impact and eventually break. Since the hollow fiber membrane module is a consumable, it must be replaced after a certain period of time, but most of the hollow fiber membrane modules are replaced due to header damage rather than other problems of the hollow fiber membrane. Therefore, if only the damage of the header can be prevented, it is possible to extend the service life of the hollow fiber membrane module without replacement.

Increasing the replacement period of the hollow fiber membrane module means a reduction in the repair and maintenance costs of the immersion membrane separation device can significantly reduce the cost of operating the device.

However, up to now, the header of the hollow fiber membrane module assembled to the module support has focused on developing the technology necessary to prevent the flow after assembly. Thus, it was common to have a structure in which an auxiliary structure is fixed to another part of the header so as to prevent the coupling part from moving at all, or it is doubled by using another holder. However, as shown in FIGS. In use, the header or the base of the suction pipe connection coupled to the suction pipe is frequently damaged during use.

Figure 2 shows a state in which the outlet hole of the header is broken by the header connector coupled to the outlet of the conventional hollow fiber membrane module header, Figure 3 is a header connector coupled to the outlet of the conventional hollow fiber membrane module header The outflow hole is damaged and the thread part of the header connector inserted into the outflow hole is exposed to the outside. FIG. 4 shows that the suction pipe connector coupled to the conventional suction pipe tap hole is inclined to one side before the screw of the suction pipe connector is broken. Figure 5 shows the state, the suction pipe connector installed in the conventional membrane unit is inserted in the tap hole of the suction pipe, the base portion is completely cut and only the bottom portion is inserted into the tap hole.

Explaining the process of breaking a connector such as a header connector or a suction pipe connector, the connector is similar to a connector that is coupled between the hollow fiber membrane module and the suction pipe and sends purified water sucked from the hollow fiber membrane module to the suction pipe to the outside. When the flow generated from the module is transferred to the connection pipe or the flow generated from the suction pipe is transmitted to the connection pipe, the load is concentrated on the connector part coupled to the hollow fiber membrane module and the connector part coupled to the suction pipe, and eventually breaks there.

Figure 6 is to combine the one header connector to the hollow fiber membrane module side and the suction pipe connector to the suction pipe connector so that the flow force generated in the hollow fiber membrane module and the flow force generated in the suction pipe does not affect each other through the connector The header connector and the suction pipe connector are separated from each other and then expanded in detail.

When the flow force is transmitted to the el-shaped header connector through the hollow fiber membrane module, the header connector freely vibrates vertically from the suction pipe connector and the flow force is not excessively transmitted to the suction pipe connector. This is not transmitted to prevent damage, and in the same way the flow force generated in the suction pipe is not transmitted to the coupling portion of the hollow fiber membrane module and the header connector to prevent damage.

The horizontal flow force is absorbed by the O-ring fitted to the outer circumference of the header connector.The upper outer diameter of the header connector is designed to be 1 ~ 2mm smaller than the lower inner diameter of the suction pipe connector, and the space of the O-ring is prevented by the elastic O-ring. Elasticity absorbs the horizontal flow force.

However, the membrane unit is installed in the water, and there is a contaminated and viscous material such as mud in the water, and contaminants are bent or twisted between the header connector or the suction pipe connector when the membrane unit is used for a long time.

If the amount of warpage or twist between the connector and the inlet pipe is small, the difference in diameter can be compensated by the difference in diameter by 1 ~ 2mm, but the amount of warpage or the amount of warpage can be offset by increasing the amount of warpage or distortion. As shown in Figure 2, it breaks or breaks.

Republic of Korea Patent No. 10-1733980 (2017.05.01) Republic of Korea Patent Publication No. 10-2012-133601 (2012.12.11) Republic of Korea Patent Publication No. 10-2005-116566 (2005.12.13) Republic of Korea Patent Publication No. 10-2006-7874 (2006.01.26) Republic of Korea Patent No. 10-1554924 (2015.09.16)

The present invention is to solve the problems as described above, after the hollow fiber membrane module is assembled to the membrane unit, the hollow fiber membrane module connector is coupled to the outlet hole of the header when communicating with each other through the hollow fiber membrane connector and suction pipe connector The present invention provides a membrane unit for an immersion type membrane separation device capable of passing or absorbing a flow force applied to a suction pipe connector coupled to a tap hole.

In order to achieve the above object, the present invention provides a membrane unit for an immersion membrane separation apparatus, comprising: a membrane frame; A suction pipe installed in the membrane frame and having a flow path formed therein and having a plurality of tap holes communicating with the flow path at a lower portion thereof; A hollow fiber membrane module mounted on the separation membrane frame and having a hollow fiber membrane connected between a header and a header formed therein, and having outflow holes communicating at both ends thereof with a flow path of the header; One end is fitted into the outlet hole of the header and the other end is bent upward and directed toward the tap hole of the suction pipe; A suction pipe connector having one end fitted into a tap hole of the suction pipe and the other end of which is directed toward the header connector; It is inserted between the header connector and the suction pipe connector is slidably coupled while sliding in the vertical direction, and is divided into an upper flange and a lower body by a middle flange, and the ring body is formed in the upper body and the lower body after forming a ring groove O-ring is inserted into the vertical flow force and horizontal direction transmitted through the hollow fiber membrane module and the suction pipe is formed so as to move in the horizontal direction between the inner wall surface of the header connector and the suction pipe connector while maintaining the watertight Intermediate connector continuously absorbs the flow force; And an air diffuser installed at the lower portion of the membrane frame to remove a foreign substance adhering to the hollow fiber membrane of the hollow fiber membrane module by generating an aeration pressure to generate a water flow. To provide.

In addition, between the suction pipe holder portion formed in the lower portion of the suction pipe connector and the upper surface of the flange of the intermediate connector and between the header holder portion formed in the upper portion of the header connector and the lower surface of the intermediate connector when the flow force is transmitted to the flange O-rings are inserted to prevent breakage of the header screw portion and the suction tube screw portion by elastically absorbing the fluid force and being transferred to the header screw portion and the suction pipe screw portion, and two ring grooves are formed on the outer circumferences of the upper body and the lower bar, respectively. The elastic O-ring is inserted into the ring groove of the, characterized in that the intermediate connector can maintain the watertight even if the relative inclination is much inclined.

According to the present invention, even when an impact force is applied to the hollow fiber membrane module by the aeration pressure of the diffuser during operation of the membrane unit, the impact force is excessively applied to the header connector coupled to the outlet hole of the header or the suction tube connector coupled to the tap hole of the suction pipe. This prevents fatigue breakdown of the joint.

In addition, even when the header connector or the suction pipe connector is excessively bent or twisted, a structure that can compensate for the bending or the distortion is formed. That is, even if the mud-like foreign matter is caught or twisted between the header connector and the header connector, and between the suction pipe connector and the suction pipe connector, the intermediate connector moves like a joint to offset its bending or distortion.

In addition, if the header connector or suction line connector is damaged during use, it will be expensive to replace and the equipment must be shut down during the replacement process, and contaminated water cannot be properly treated at this time. It can be greatly increased.

1 is a perspective view of main parts of a conventional membrane unit.
2 shows a state in which the outlet hole of the header is damaged by a header connector coupled to the outlet hole of the conventional hollow fiber membrane module header.
3 shows a state in which the outlet hole is damaged by a header connector coupled to the outlet hole of the conventional hollow fiber membrane module header, so that the screw part of the header connector inserted into the outlet hole is exposed to the outside.
4 shows a state before the suction pipe connector coupled to the suction pipe tap hole is inclined to one side and the screw of the suction pipe connector is broken.
FIG. 5 shows that the bottom part is completely cut in the state where the suction pipe connector installed in the conventional membrane unit is fitted into the tap hole of the suction pipe so that only the bottom part is inserted into the tap hole.
6 is a detailed view of a conventional header connector and suction pipe connector.
7 is a front view of the separator unit according to the present invention.
8 is a perspective view of an essential part of the separator unit according to the present invention.
9 is an exploded perspective view of a header connector, an intermediate connector, and a suction pipe connector according to the present invention.
10 is a cross-sectional view of the header connector, the intermediate connector and the suction pipe connector according to the present invention coupled to the separator unit.
11 conceptually shows that the header connector and the suction pipe connector according to the present invention are angularly changed according to the flow force by the intermediate connector having a joint function.

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

As shown in Figure 7 to 10, the structure formed by welding with each other in the corner portion is provided with a separation membrane frame 110 to form a cuboid form by being combined by integral bolts for convenient disassembly and assembly.

The upper and lower ends of the separator frame 110 are formed with a module support 120 for connecting across both sides of the separator frame 110. The module support 120 also strengthens the structure while connecting both sides of the membrane frame.

The module support 120 may be coupled to the separator frame 110 by welding, but may be fastened in a bolt / nut manner to facilitate replacement when damaged.

Between the upper and lower module support 120 is installed a plurality of predetermined intervals of the hollow fiber membrane module (130). The hollow fiber membrane module 130 is formed by connecting the plurality of hollow fiber membranes 136 between the headers 132 of the synthetic resin material spaced apart from each other and interposed therebetween, and on the header 132 of the upper side, the hollow fiber membranes 136 and A communication channel is formed.

When the hollow fiber membrane 136 is coupled to the header 132, the end of the hollow fiber membrane 136 made of a bundle is positioned in the flow path of the header 132, and then poured by an adhesive thereto to fix and fix it.

Since the hollow fiber membrane 136 is flexible, such as a drinking straw made of a synthetic resin material, it is difficult to securely fix the header 132 while maintaining watertightness without a defect in the mechanical coupling means.

Bonded part hardened by applying adhesive may be damaged if a continuous impact force occurs during use, and in particular, the synthetic resin header 132 formed with a flow path may be damaged, so that the hollow fiber membrane module 130 is assembled and fixed to the membrane frame 110. When the hollow fiber membrane module 130 is firmly fixed, it must be able to withstand the repetitive flow of water flow due to the impact of the pulse pressure inevitably caused by the diffuser. That is, fatigue failure should not occur easily. Outflow holes 134 communicating with the flow path of the header are formed at both ends of the upper header 132.

Suction tubes 140 are installed on both sides of the upper side of the membrane frame. The suction pipe 140 has a flow path formed therein and is connected to a pump or the like outside to form a negative pressure. The suction pipe 140 is connected to the header 132 of the hollow fiber membrane module to transmit the purified water absorbed through the hollow fiber membrane module 130 to the outside through the suction pipe 140 to enable continuous water purification. A plurality of tab holes 142 are formed below the suction pipe 140.

Between the hollow fiber membrane module 130 and the suction pipe 140, the flow path is connected to each other through the hollow header connector 150 and the suction pipe connector 160.

The header connector 150 is coupled to the outlet hole 134 of the header 132, the header connector 150 is bent in the form of the letter L (L), one end of the header screw portion 152 is formed and the other end The header holder portion 154 is formed.

The header screw portion 152 of the header connector 150 is fitted into the outlet hole 134 and coupled. Tabs are also formed in the outlet hole 134 so that the header screw portion 152 is coupled thereto in a bolt / nut manner. The header screw portion 152 is formed with a ring groove (RN) and an O-ring (OR) fitted into the ring groove so that the watertightness is maintained when coupled to the outlet hole 134.

The suction pipe connector 160 is coupled to the tap hole 142 of the suction pipe 140. The suction pipe screw unit 162 is formed at one end of the suction pipe connector 160, and the suction pipe holder 164 is formed at the other end thereof. The suction pipe screw portion 162 is fitted into the tab hole 142 and is coupled in a bolt / nut manner. O-ring (OR) that is fitted to the ring groove (RN) and the ring groove is also formed in the suction pipe screw portion 162 is coupled to the tap hole 142 to maintain the watertight.

The header holder 154 of the header connector 150 and the suction pipe holder 164 of the suction pipe connector 160 are designed to meet in a straight line to be spaced apart by a predetermined distance up and down.

An intermediate connector 170 is coupled between the header holder part 154 and the suction pipe holder part 164. The intermediate connector 170 is divided into the upper body 174 and the lower part of the lower body 176 based on the flange 172 protruding like a ring to the outside in the middle. The lower body 176 is inserted into the header holder portion 154, and the upper body is inserted into the suction pipe holder portion 164.

The upper body 174 and the lower body 176 are formed in two rows of ring grooves RN, respectively, and each ring groove is fitted with an O-ring OR. The upper body and the lower body are 1 ~ 2mm in diameter smaller than the inner diameter of the header holder and the inner diameter of the suction pipe holder. The difference between the inner diameter and the diameter is that the O-ring blocks the water tightness. Therefore, the thickness of the O-ring is set in consideration of the difference between the inner diameter and the diameter.

Even if the vertical center line of the header holder portion 154 or the suction pipe holder portion 164 moves in the horizontal direction of 1 to 2 mm, the intermediate connector 170 can be replaced during use, and in the fitted state even if it is twisted in the inserted state. You can move horizontally as much as you move. The larger the difference between the inner diameter and the diameter, the larger the horizontal movement amount but the watertightness cannot be maintained, so the difference between the inner diameter and the diameter is preferably 1 to 2 mm.

The O-ring (OR) is also fitted to the outer circumference of the bottom and top of the flange 172 of the intermediate connector 170. The O-ring fitted here is in close contact with the outer surface of the flange. The flange thickness of the intermediate connector is set in consideration of the separation distance between the header holder and the suction pipe holder, and the flange is a function of fixing the insertion position of the header holder or the suction pipe holder, but the distortion of the intermediate connector does not occur excessively. It also prevents it.

An air diffuser 510 is installed at the bottom of the membrane unit to eject compressed air upward from the bottom of the hollow fiber membrane module through a pump. The diffuser 510 is installed at the bottom of the membrane unit in the form of a hollow pipe, and a plurality of air holes are formed at predetermined intervals to blow out the compressed air toward the hollow fiber membrane module 130 through a pump.

As described above, the diffuser 510 is used to shake off the contaminants stuck to the micropores of the hollow fiber membrane 136. When the diffuser 510 is blown out at a uniform pressure, the diffuser 510 is aerated at regular intervals. That is, by blowing the pulse air pressure to the hollow fiber membrane 136 to increase the effect of removing contaminants stuck to the micropores.

Referring to the operation of the membrane unit according to the present invention configured as described above are as follows.

When the membrane unit is installed and operated in the effluent treatment apparatus while the hollow fiber membrane module 130 is assembled, the aeration pressure is ejected through the diffuser 180.

When the aeration pressure is ejected, as well as the entire membrane frame 110 flows by the water flow affected by the aeration pressure, the hollow fiber membrane module 130 is also flowed.

When the header 132 of the hollow fiber membrane module 130 flows, the flow force is applied to the header screw portion 152 coupled to the outlet hole 134, so that the entire header connector 150 flows. Since the outlet 134 of the header 132 is fitted into the header screw part 152, the flow force is concentrated in the header screw part 152. If the header holder portion 154 of the header connector 150 is not fixed, even if a flow force is applied to the header screw portion 152, since the free vibration does not concentrate the flow force on the header screw portion 152, the header holder portion 154 ) Is inevitably fixed in order to form a closed continuous flow path to create suction pressure.

When the header connector 150 is formed of a flexible rubber hose, the fluid can be absorbed while passing fluidity with flexibility, but when the flexible rubber hose is used for a long time in water, various problems occur such that it is difficult to use the flexible rubber hose. .

The flow force transmitted to the header connector 150 is transmitted to the intermediate connector 170 and the suction pipe connector 160 connected thereto. If the flow force transmitted to the header connector 150 and the suction pipe connector 160 is not absorbed or not properly distributed, the flow force is concentrated and continuously applied to the header screw part 152 or the suction pipe screw part 162. This fatigue is destroyed.

The vertical flow force transmitted to the header holder portion 154 of the header connector 150 does not transmit the flow force to the intermediate connector 170, but the header holder portion 154 moves while sliding and vibrating in the vertical direction. Pass and absorb. Since the lower body 176 of the intermediate connector inserted into the header holder 154 can move freely in the vertical direction inside the header holder 154, the flow force is absorbed without being applied.

Similarly, the flow force transmitted to the suction pipe connector 160 through the intermediate connector 170 and the suction pipe 140 absorbs the flow force while the suction pipe holder 164 slides and vibrates in the vertical direction. Since the upper body 174 of the intermediate connector 170 inserted and coupled to the suction pipe holder 164 can move freely in the vertical direction inside the suction pipe holder 164, the flow force is absorbed without being applied.

The horizontal flow force transmitted to the header connector 150 and the suction pipe connector 160 is also not solved. Eventually destroys fatigue.

The vertical flow force is a distance that can secure a sufficient flow height even if the vertical vibration is large if the distance between the depth of the header holder portion 154 and the bottom space 176 sliding up and down therein is large. The directional flow force can be absorbed within the range of the inner diameter of the header holder portion 154 and the diameter difference of the lower body 176 and the inner diameter of the suction pipe holder portion 164 and the diameter of the upper body 174. In the present invention, the diameter difference is about 1 to 2 mm.

In order to maintain the water tightness after increasing the diameter difference between the header holder 154 and the body 176, the O-ring (OR) may be formed as thick as the diameter difference and then moved horizontally due to the elasticity of the O-ring. If the thicker), the small water pressure will open the O-ring and it will not be able to maintain watertightness.

If the header connector 150 or the suction pipe connector 160 is maintained at the limit of the error specified in the membrane unit design, even if the difference between the inner diameter and the diameter is smaller than 1 mm, the horizontal vibration can be sufficiently offset, but the header connector 150 or the suction pipe connector ( 160 is often excessively bent or twisted due to the foreign matter like mud between the header connector 150 and the suction pipe connector 160 during use, if possible, widen the diameter difference between the diameter and diameter of the header connector or suction pipe It is desirable to allow the connector to be moved a lot in the horizontal direction.

In order to compensate for the vibration movement of the header connector 150 and the suction pipe connector 160 relatively horizontally while maintaining watertightness, the horizontal movement spaces are respectively provided on the upper body 174 and the lower body 176 of the intermediate connector 170. Since the O-ring (OR) which secures 1 to 2 mm is inserted, even if the header holder portion 154 moves 1 to 2 mm to the left and the suction pipe holder 164 moves 1 to 2 mm to the right in the state as shown in FIG. The horizontal flow force is absorbed without being excessively applied to the header holder portion 154 or the suction pipe holder portion 164.

That is, the intermediate connector 170 moves like a joint through the upper body 174 and the lower body 176 with respect to the flange 172, and interlocks with the horizontal vibration, respectively, so that the inner diameter and the diameter difference are substantially 1 to 2 mm 2. Up to 2 to 4mm of horizontal flow force can be absorbed.

If the header connector 150 and the suction pipe connector 160 are bent or twisted beyond the limit that the header holder 154 and the suction pipe holder 164 can move in the horizontal direction, the header holder 154 or the suction pipe holder ( 164 is unbearable and can only be damaged, in which case the force due to bending or twisting disperses the force by the flange 172 of the intermediate connector 170, the damage of the header holder 154 and the suction pipe holder 164 To prevent.

As shown in FIG. 11, when the horizontal movement of the header holder 154 or the suction pipe holder 164 becomes excessive, the vertical axis of the intermediate connector 170 is excessively inclined in one direction. When the intermediate connector 170 is inclined, the upper end side of the header holder portion 154 or the lower end side of the suction pipe holder portion 164 contacts the flange 172 surface.

When the header holder 154, the upper end, and the lower end of the suction pipe holder 164 contact the flange 172, the header holder 154 and the suction pipe holder 164 are formed by the upper body 174 and the lower body 176. Part of the force acting on the inner side) is transmitted to the surface of the flange 172 so that the horizontal force acts in the vertical direction, thereby preventing the header holder portion 154 and the suction pipe holder portion 164 from bursting radially. do. If the bending or twisting of the header connector 150 or the suction pipe connector 160 becomes more severe, even if the horizontal force is converted to the vertical direction on the flange surface and dispersed, it will be broken, but the horizontal force is vertically driven by the flange 172. Only some switching can greatly reduce the degree of breakage.

As such, even when the flow force due to the aeration pressure of the diffuser 140 is applied to the entire membrane unit such as the hollow fiber membrane module 130 or the intake pipe, the flow force is changed as the joint angle, while maintaining the watertight while being vertical and horizontal. In the direction of absorbing or offsetting the flow force to prevent the breakage of the header connector 150 coupled to the outlet hole 134 of the header 132 and the suction tube connector 160 coupled to the tap hole 142 of the suction pipe 140. It can prevent.

110: membrane frame 120: module support
130: hollow fiber membrane module 132: header
134: outflow hole 136: hollow fiber membrane
140: suction pipe 142: tap hole
150: header connector 152: header thread
154: header holder portion 160: suction pipe connector
162: suction pipe screw 164: suction pipe holder
170: intermediate connector 172: flange
174: Body Body 176: Body Body
180: diffuser

Claims (3)

In the membrane unit for immersion membrane separation apparatus,
Separation membrane frame 110;
A suction pipe 140 installed at the separator frame and having a flow path formed therein and a plurality of tab holes formed at a lower portion thereof in communication with the flow path;
A hollow fiber membrane module 130 mounted to the separation membrane frame and having a hollow fiber membrane connected between a header and a header formed therein, and having outflow holes communicating at both ends of the header channel;
A header connector 150 coupled to one end of the outlet hole of the header, the other end of which is bent upward and directed toward the tap hole of the suction pipe;
One end is inserted into the tap hole of the suction pipe and the other end is the suction pipe connector 160 toward the header connector;
It is inserted between the header connector and the suction pipe connector is slidably coupled while sliding in the vertical direction, and is divided into an upper flange and a lower body by a middle flange, and the ring body is formed in the upper body and the lower body after forming a ring groove O-ring is inserted into the vertical flow force and horizontal direction transmitted through the hollow fiber membrane module and the suction pipe is formed so as to move in the horizontal direction between the inner wall surface of the header connector and the suction pipe connector while maintaining the watertight An intermediate connector 170 continuously absorbing the flow force; And
An diffuser 180 installed at a lower portion of the separation membrane frame to generate a stream of aeration to remove foreign matter stuck to the hollow fiber membrane of the hollow fiber membrane module;
Separation membrane unit for an immersion type membrane separation apparatus comprising a. The method of claim 1,
The flow force when the flow force is transmitted to the flange between the suction pipe holder portion formed in the lower portion of the suction pipe connector and the upper surface of the flange of the intermediate connector and the lower surface of the header connector and the header connector formed on the upper portion of the header connector A membrane unit for an immersion type membrane separation device, characterized in that an O-ring is fitted to prevent the breakage of the header screw portion and the suction tube screw portion by absorbing this elastically and passing it to the header screw portion and the suction tube screw portion. The method of claim 1,
Two ring grooves are formed on the outer circumference of the upper body and the lower bar, and an elastic O-ring is inserted into each ring groove, so that the intermediate connector can maintain the watertight even when the intermediate connector is inclined much. Membrane unit.

Images