KR101845718B1 - Reverse osmosis purification type water treatment device that improves workability and maintains performance regardless of external temperature - Google Patents

Abstract

The present invention relates to a water treating device of a reverse osmosis purification method capable of improving workability and maintaining a performance regardless of external temperature. According to an embodiment of the present invention, the water treating device of a reverse osmosis purification method capable of improving workability and maintaining a performance regardless of external temperature comprises: a purification unit (100); a frame (200); and a pipe unit (300). The water treating device of a reverse osmosis purification method capable of improving workability and maintaining a performance regardless of external temperature of the present invention can maintain high purification efficiency.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reverse osmosis purification type water treatment apparatus that improves workability and maintains performance regardless of an external temperature,

The present invention relates to a reverse osmosis purification type water treatment apparatus, and more particularly, to a reverse osmosis pressure vessel system in which a reverse osmosis pressure vessel is installed in a frame at the time of manufacture, Which can maintain the high airtightness and maintain the uniform cleaning performance irrespective of the external temperature, and has a separate heating part to maintain the performance regardless of the external temperature. Type water treatment apparatus.

Generally, in the purification of liquids such as agricultural water, industrial wastewater and the like, a purification device is used to purify the liquid.

Such purification apparatuses are implemented in various ways, and in particular, most purification apparatuses can purify and reuse them using a filter.

The purifying filter can be used independently, but recently, in order to increase the purifying efficiency, a plurality of the purifying filters are connected in series or in parallel, and they are used while increasing the purifying effect through a continuous purifying process.

In particular, there is RO (reverse osmosis) type water treatment apparatus in a high purification efficiency.

RO method is reverse osmosis. When the osmosis is carried out with the filtration membrane interposed therebetween, a large pressure is applied to the side of the solution having a high concentration, which corresponds to the osmotic pressure, and the solvent is moved to the lower concentration side.

This RO method is mainly used for purifying and reusing industrial water in an industrial field. Various purification methods are required depending on the use in cleaning polluted industrial water. Particularly, Therefore, there is a need for an apparatus capable of applying a large number of filters.

In connection with the prior art document 1 (Patent Document 10-1335730, a water treatment apparatus and a method of installing the same), a structure that facilitates installation and demolition in the field while improving space utilization is disclosed.

However, workability is not easy when the bezel having a length of several meters is continuously mounted on the frame, and installation and replacement of the filter are not easy, so that connection of the adapter connecting the filters is not easy, A problem occurs.

Further, the state of the liquid to be purified is changed according to the external temperature, so that the liquid is cooled or the purification efficiency is lowered due to the low temperature, especially when the purification operation is performed at a low temperature.

Prior Art Document 1 (Patent Document 10-1335730 Water Treatment Apparatus and Method of Installing the same)

SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems described above, and it is an object of the present invention to provide a bezel that can be easily installed by a guide when installed on a frame, can be easily installed in a fixed position, It is possible to maintain the high airtightness while maintaining the high airtightness. Also, since the heating means is built in the frame to which the vessel is installed, the workability of maintaining the high purification efficiency regardless of the external temperature is improved and the performance is maintained regardless of the external temperature And an object of the present invention is to provide a water treatment apparatus of reverse osmosis purification method capable of water treatment.

A water treatment apparatus of the reverse osmosis purification system, which improves workability according to an embodiment of the present invention and can maintain performance regardless of an external temperature, includes a tube A filter 120 disposed inside the vessel 110 to purify polluted water flowing into the vessel 110 and a filter 120 installed at both ends of the vessel 110, An inlet guide member 140 disposed inside the cap 130 to guide the contaminated water flowing into the vessel 110 to the filter side, And a filter adapter 150 coupled to the filter 120 to connect the filters 120 to each other while the purifier 100 is installed at a lower portion of the purifier 100, A purge part support frame 210 supporting the part 100, A clamp 220 provided on the upper part of the supporting frame 210 to fix the purifying part 100 in a state that the purifying part 100 is mounted on the upper part of the purifying part supporting frame 210, A vertical frame 230 provided at both ends of the vertical frame 230 to support the purge part support frame 210 and a purge part support frame 210 and a vertical frame 230 provided below the vertical frame 230, A frame (200) comprising a base frame (240) for supporting; And an inlet pipe part 310 connected to both ends of the purifier part 100 and introducing polluted water into the purifier part 100 at one end thereof and a discharge pipe part 310 connected to both ends of the purifier part 100, And a piping unit 300 having a piping unit 320 and connected to the inflow piping unit 310 and the discharge piping unit 320 and having a circulation pump 330 for circulating polluted water and purified water, .

The filter 120 is formed of a reverse osmosis membrane in the shape of a cylinder and has a center shaft tube 121 for supporting the filter 120 at the center. On the inside of both ends of the center shaft tube 121, The filter adapter (150) has a smaller diameter than the inner diameter of the central shaft tube (121), and the outer periphery of the filter adapter (150) A filter connecting portion 151 having a fastening protrusion 151b fastened along the groove 121a in the inner direction of the central axis tube 121 and a central connecting portion 151 formed in the center axis tube 121 in the middle of the filter connecting portion 151, And a filter separator 152 for separating the filter 120 from the other filters 120 connected to the filter 120 by a predetermined distance. The outer periphery of the filter connecting portion 151 The filter 120 is further connected to the filter packing 152a by coupling the filter 120 and the filter packing 152a by rotating the fastening protrusion 151b to the spiral fastening groove 121a, So that airtightness is maintained.

The purge part support frame 210 is installed in the lower part of the purifier part 100 installed on the upper and lower support frame 200 and supports the purifier part 100 in a proper position, And a guide 211 for guiding the guide member 211.

The purifying part support frame 210 is further provided with a heating part 212 which can heat the inside of the vessel 110 along the longitudinal direction of the purifying part 100 installed on the upper part thereof .

The guide 211 is further provided with a guide roller 211a for guiding the installation of the purifier 100 while rotating along the longitudinal direction of the purifier 100 at a position in contact with the purifier 100 .

The water treatment apparatus of the reverse osmosis purification system, which improves workability and maintains performance regardless of the external temperature according to an embodiment of the present invention, has the following effects.

First, when the vessel is installed in the frame, it can be easily mounted and accurately installed in the correct position.

Second, when installing or replacing the filter, it can be easily installed and replaced with a small force.

Thirdly, even when the external temperature is low, the liquid to be purified can be heated and purified by the heating means, so that a high purification efficiency can be maintained.

FIG. 1 is a perspective view of a water treatment apparatus according to an embodiment of the present invention. FIG. 1 is a perspective view illustrating a water treatment apparatus according to an embodiment of the present invention.
FIG. 2 is a perspective view showing only a purifying part and a frame in a reverse osmosis purification method water treatment apparatus in which workability is improved according to an embodiment of the present invention,
FIG. 3 is an exploded perspective view illustrating a state in which a purification unit and a frame are disassembled in a reverse osmosis purification method water treatment apparatus in which workability is improved according to an embodiment of the present invention,
FIG. 4 is a partially cutaway perspective view showing the guide of the water treatment apparatus of the reverse osmosis purification system improved in workability according to an embodiment of the present invention,
FIG. 5 is an exploded perspective view showing the structure of a purifier in a water treatment apparatus of reverse osmosis purification system in which workability is improved according to an embodiment of the present invention,
6 is a cross-sectional view showing the internal structure of the purifying section of the water purifying apparatus of the reverse osmosis purification system in which workability is improved according to an embodiment of the present invention,
FIG. 7 is a perspective view showing in detail a coupling structure between a filter adapter and a central shaft pipe in a reverse osmosis purification type water treatment apparatus in which workability is improved according to an embodiment of the present invention,
8 is a perspective view showing in detail a clamp structure of a water treatment apparatus of reverse osmosis purification system in which workability is improved according to an embodiment of the present invention,

The present invention relates to a reverse osmosis purification type water treatment apparatus, and more particularly, to a water treatment apparatus using a reverse osmosis purification method, in which a guide is applied between a frame and a purification unit to facilitate fabrication and precise manufacture, It is possible to improve the airtightness by improving the structure of the connecting filter adapter and to prevent the liquid to be purified by the external temperature from being cooled or the purification efficiency to be lowered when the external temperature is low, The present invention is directed to a water treatment apparatus of an osmosis purification system capable of maintaining workability while maintaining performance regardless of an external temperature.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a reverse osmosis purification type water treatment apparatus capable of improving workability and maintaining performance regardless of an external temperature according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall perspective view of an osmosis treatment type reverse osmosis purification system capable of improving workability and maintaining performance regardless of an external temperature according to an embodiment of the present invention.

Referring to FIG. 1, the present invention mainly includes a purifier 100 for purifying polluted water, a frame 200 for supporting a purifier 100 provided with a plurality of purifiers 100, And a piping unit 300 connected to the control unit 100 to control the intake of polluted water and the outflow of purified water.

The piping unit 300 includes an inlet pipe 310 for introducing the polluted water to the purifier 100 and a purifier 300 for purifying the purified water flowing into the inlet pipe 310 and passing through the purifier 100, And a circulation pump 330 for circulating polluted water and purified water along the piping.

At this time, the inflow pipe portion 310 further includes a rinse solution inflow pipe 311 which can remove contaminants by circulating the rinse solution when the filter 120 of the purification unit 100 is contaminated and the purification power is lowered.

The cleaning fluid inlet pipe 311 is connected to one side of the inlet pipe 310 to selectively supply the cleaning fluid. When the cleaning fluid inlet pipe 311 is cleaned, the cleaning fluid valve 311a provided in the cleaning fluid inlet pipe 311 is closed, The inflow pipe valve 312 provided in the inflow pipe unit 310 is closed and the washer fluid valve 311a is opened to introduce the cleaning fluid into the inflow pipe unit 310. In this case, The filter can be cleaned and reused according to the setting.

FIG. 2 is a perspective view showing only a purifying part and a frame in a reverse osmosis purification type water treatment apparatus in which workability is improved according to an embodiment of the present invention and performance can be maintained regardless of external temperature, and FIG. FIG. 6 is an exploded perspective view showing a state in which a purification unit and a frame are disassembled in a water treatment apparatus of an inverse osmotic pressure purification system in which workability according to an embodiment is improved and performance can be maintained regardless of an external temperature.

FIG. 1 is a view showing a product having a long length of purifier to show the entire piping shape. FIG. 2 and FIG. 3 show only a short length product recess to simplify the construction of the present invention.

2 to 3, the frame 200 includes a purifying part support frame 210 for supporting the purifying part 100 in the lower part of the purifying part 100, A clamp 220 provided at a position where the purifier 100 is installed on the upper part and fixing the purifier 100 in a state where the purifier 100 is mounted on the purifier support frame 210, A vertical frame 230 supporting the purge part support frame 210 at both sides of the support frame 210 and the purge part support frame 210 provided at the lower part of the filling frame 200 and provided with the purge part 100, And a base frame 240 for stably supporting the vertical frame 230 on the ground.

At this time, a guide 211 for guiding the installation of the purifying part 100 is further provided on the purifying part supporting frame 210 so that the purifying part 100 can be easily coupled to the correct position, And a heating unit 212 for applying heat to the purifying unit 100 along the longitudinal direction of the purifying unit 100 in the sub-support frame 210.

The heating unit 212 is further provided with a switch (not shown) that selectively transmits heat to the purifying unit 100 when the heat is generated, and selectively turns on / off the heat according to the external temperature .

The heating unit 212 may be a heater of an electric operation type, and may be applied in various ways such as high frequency heating, steam heating, and the like.

This makes it possible to easily install the purifying part 100 and to improve the purifying efficiency of the purifying part 100 in an optimum state regardless of the external temperature . ≪ / RTI >

FIG. 4 is a partially cutaway perspective view showing a guide of a water treatment apparatus of reverse osmosis purification system in which workability is improved according to an embodiment of the present invention and performance can be maintained regardless of external temperature.

4, the guide 211 guides the one end of the purifier 100 to the front of the purifier 100 while guiding the purifier 100 from the bottom of the purifier 100 to the correct position when the purifier 100 is installed. And is installed to move to the guide of the other purifying part support frame 210 while being slid to the upper part of the guide 211 according to pushing in the longitudinal direction of the purifying part 100. However, And a guide roller 211a guiding the part 100 to be smoothly slid and transported.

The guide roller 211a is installed inside the guide 211 so as to rotate along the conveyance direction of the purifier 100 toward the purifier 100 and the guide roller 211a is provided below the guide roller 211a The guide roller 211a protrudes and rotates when the purifier unit 100 passes the upper part of the guide 211. When the purifier unit 100 is positioned at the correct position, the guide roller 211a is pressed and fixed by the clamp 220 The tension roller 211b is further provided with a tension portion 211b for providing a tension so that the guide roller 211a is lowered and drawn into the guide 211.

Therefore, when the purifying part 100 is installed on the purifying part supporting frame 210, it is possible to easily install the purifying part 100 with a small force. When the purifying part 100 is fixed, .

FIG. 5 is an exploded perspective view illustrating the structure of a purifier in a reverse osmosis purification type water treatment apparatus capable of improving workability and maintaining performance regardless of external temperature according to an embodiment of the present invention. FIG. Sectional view showing the internal structure of the purifier of the water purifier of the reverse osmosis purification system in which workability according to an embodiment of the present invention is improved and performance can be maintained regardless of external temperature.

5 to 6, the purifying unit 100 includes a vessel 110 having a tubular shape and being purified while passing polluted water, and a plurality of vessels 110 are installed inside the vessel 110 in series, A cap 130 which is detachably attached to both ends of the vessel 110 to maintain the airtightness of the vessel 110; An inlet guide member 140 provided in the vessel 110 in the direction of the cap 130 and connected to the vessel 110 to guide the polluted water flowing into the vessel 110 toward the filter 120, A filter adapter 150 for connecting the filters 120 to each other while forming a predetermined space between the filter 120 and the other filter 120 in connecting the filters 120 to the inside of the vessel 110, ).

The vessel 110 is provided with a water inlet 111 through which polluted water flows into the vessel 110 and a water outlet 112 through which the purified water flows into the water inlet 111 through the filter 120, And a cap coupling groove 113 to which a cap 130 that maintains airtightness inside the vessel 110 is coupled with the filter 120 coupled to both ends thereof.

At this time, the flow sensor 112a is installed in the outlet 112 to detect the flow rate of the filter 120. When the filter 120 is contaminated, the inlet pipe portion 310 The cleaning liquid can be introduced into the vessel 110 by opening the cleaning liquid inlet pipe 311 provided in the vessel 110 and cleaning the filter 120.

The filter 120 is formed by a reverse osmosis membrane as a whole and a center shaft tube 121 capable of supporting the entire filter 120 is provided at the center.

At this time, spiral coupling grooves 121a for coupling the filter adapter 150 are formed inside both end portions of the central shaft tube 121.

The cap 130 is provided with a cap packing 131 along the upper edge to seal the inside of the vessel hermetically when the vessel 130 is coupled to the vessel 110, The inlet guide surface 132 for guiding the contaminated water to the inlet guide member 140 is formed.

The inlet guide member 140 has a generally conical shape and the direction of contact with the filter 120 is opened in a circular shape corresponding to the inner circumferential surface of the vessel 110. On the opposite side, So that the end of the cap 130 comes in contact with the inlet guide surface 132 of the cap 130.

When a large number of inflow holes 141 are formed along the outer circumferential surface between the filter 120 side and the cap 130 side so that the contaminated water flows into the inlet 111 of the vessel 110, 132 to the inlet hole 141 of the inlet guide member 140 and is transferred to the filter 120 side so that the contaminated water can be purified and circulated while passing through the filter 120.

The filter adapter 150 is provided to continuously connect the filters 120 inserted into the vessel 110 so as to be spaced apart from each other by a predetermined distance and to be connected to the inner circumference of the central shaft tube 121 of the filter 120 And the center of each of the filters 120 has a size corresponding to the outer circumference of the central shaft tube 121 so that the plurality of filters 120 can be continuously and spaced apart from each other.

Accordingly, the polluted water is circulated through the plurality of filters 120 while circulating the polluted water secretly to purify polluted water, and a plurality of purifying units 100 having such functions are continuously installed to pollute each purifying unit 100 So that the purification can be performed while maintaining a high purification power.

FIG. 7 is a perspective view showing in detail a coupling structure of a filter adapter and a center shaft tube in a reverse osmosis purification type water treatment apparatus in which workability is improved according to an embodiment of the present invention, and performance can be maintained regardless of an external temperature.

Referring to FIG. 7, the filter adapter 150 has a cylindrical shape having a large diameter at the center as a whole, and a cylindrical shape having a small diameter at both sides.

Both sides of the small diameter are fitted into the center shaft tube 121 of the filter 120 and joined to the filter connecting portion 151 fitted into the center shaft tube 121 of the filter 120. [

The filter connection portion 151 is formed by sequentially stacking a plurality of V seals 151a having an outer concave shape between the inner circumferential surface of the central shaft tube 121 and the outer circumferential surface of the filter connection portion 151, And a fastening protrusion 151b to be fastened to the threaded fastening groove 121a of the tube 121 is formed.

The intermediate portion having a large diameter is used as the filter separator 152 to connect the filter 120 and the other filter 120 to each other to form a space of a certain size between the filters to increase the purification efficiency, The filter 120 is fixedly supported so as to be continuously and accurately connected.

The screw connecting groove 121a is provided on the inner side of the central shaft tube 121 so as to be opposed to both sides of the central shaft tube 121. When the fastening protrusion 151b of the filter connecting part 151 is fitted, And is fastened.

At this time, airtightness can be maintained between the inner circumferential surface of the central shaft tube 121 and the outer circumferential surface of the filter connecting portion 151 by the V packing 151a, and the filter packing 152a provided on the filter separating portion 152 is screwed The outer and inner sides of the central shaft tube 121 are hermetically sealed so that the airtightness between the filter packing 152a and the central shaft tube 121 can be maintained .

At this time, the filter packing 152a is further provided with a packing protrusion 152b.

The packing protrusion 152b is fitted to the outside of the helical coupling groove 121a of the central shaft tube 121 to block the groove into which the coupling protrusion 151b of the filter coupling part 151 is inserted, . ≪ / RTI >

 Accordingly, when the plurality of filters 120 are continuously connected, connection is easy and high airtightness can be maintained.

FIG. 8 is a perspective view illustrating a clamp structure of a reverse osmosis purification type water treatment apparatus in which workability is improved according to an embodiment of the present invention and performance can be maintained regardless of an external temperature.

8, the clamp 220 is provided at a position where the purifier 100 is installed on the purge part support frame 210. One end of the clamp 220 is fixed to the purifier part support frame 210, A fixing band 221 for fixing and fixing the outside of the purging unit 100 at the free end of the fixing band 221, and a plurality of continuously-formed undercuts on the outside of the free end side of the fixing band 221 A fixing protrusion 222 and a fixing ratchet 223 provided on the free end side of the fixing band 221 and fixing the band in the form of a ratchet as the fixing protrusion 222 of the fixing band 221 is fitted, One end of the fixing protrusion 222 is fixed to the fixed ratchet 223 while the fixing protrusion 222 is fixed to the fixing ratchet 223 while the other end of the fixing protrusion 222 is fixed Which is pulled toward the ratchet 223 side and can be fastened It is configured to include in the handle 224. The

The fixing ratchet 223 is provided so as not to pivot in a direction opposite to the rotation direction of the fixing protrusion 222. When the fixing part 100 needs to be replaced or repaired, 221) is released from the fixed ratchet (223) by the release button (223a).

The fixed ratchet 223 is further provided with a ratchet torsion spring 223b that provides elasticity in a direction in which the fixed ratchet 223 constantly urges the fixing band 221. The fixed ratchet 223 has an external force It is possible to fix the fixing band 221 so that it is not loosened at all times and to release the fixing band 221 only when the releasing button 223a is operated.

When the binding band 221 is pulled when the binding knob 224 is operated, the binding band 221 is not rotated and the fixing band 221 is fixed to the fixing band 221, When the binding knob 224 is rotated in the direction opposite to the direction in which the fixing band 221 is pulled, it is rotated in the opposite direction to be pivoted so that the fixing protrusion 222 can be turned over without pressing the fixing protrusion 222 And a rotatable ratchet 224a is further provided.

The rotation ratchet spring 224b is further provided on the rotation shaft of the rotation ratchet 224a so that when the fixing band 221 is pulled toward the fixing band 221, the fixing protrusion 222 of the fixing band 221 The rotation ratchet 224a is rotated in a state where the elasticity is applied to the fixed ratchet 223 side and the protruding end portion of the rotation ratchet 224a is rotated in the groove portion of the fixing protrusion 222. [ The fixing protrusion 222 can be fixedly supported by returning to the original position by elasticity.

This makes it possible to firmly fix the purifying part 100 while rotating the binding knob 224 in a state where the purifying part 100 is installed on the purifying part supporting frame 210. If necessary, the releasing button 223a The purge section 100 can be separated from the purge section support frame 210 by a simple operation.

At this time, the tension part 211b of the guide 211 is partially pulled inwardly of the guide 211 by the weight of the purging part 100, and when the fixing band 221 of the clamp 220 is tightened, The purifying part 100 can be firmly supported so as not to slip while being in contact with the guide 211.

The present invention as described above is particularly effective in the RO type water treatment apparatus in which industrial water is purified and reused, the mutual coupling of the frame and the purifier is easy during the manufacturing process, and the workability is improved even when the filter is continuously installed, It is possible to heat the purifying part in a state where the external temperature is low and to prevent the purifying efficiency from being lowered due to the external temperature.

100: purifying section 110: vessel
111: inlet 112: outlet
112a: Flow sensor 113: Cap coupling groove
120: filter 121: center shaft tube
121a: helical fastening groove 130: cap
131: cap packing 132:
140: filter adapter 151: filter connection part
151a: packing 151b: fastening projection
152: Filter separation part 152a: Filter packing
152b: packing protrusion 200: frame
210: purge section support frame 211: guide
211a: Induction roller 211b:
212: heating part 220: clamp
221: Fixing band 222: Fixing projection
223: Fixed ratchet 223a: Release button
223b: ratchet torsion spring 224: binding knob
224a: Rotating ratchet 224b: Rotating ratchet spring
230 vertical frame 240 base frame
300: piping part 310: inflow pipe part
311: Cleaning liquid inlet pipe 311a: Cleaning liquid valve
312: inlet pipe valve 320: exhaust pipe section
330: circulation pump

Claims (5)

A filter 120 installed inside the vessel 110 to purify the polluted water flowing into the vessel 110 and a vessel 120 for filtering the polluted water flowing into the vessel 110, A cap 130 provided at both ends of the cap 130 to maintain airtightness inside the vessel 130 and an inlet guide member 132 disposed inside the cap 130 to guide the polluted water flowing into the vessel 110 toward the filter, And a filter adapter (150) coupled to an end of the filter (120) and connecting the filter (120) to each other;
A purifying part support frame 210 provided below the purifying part 100 to support the purifying part 100 while fixing the purifying part 100 and a purifying part supporting frame 210 provided at the upper part of the purifying part supporting frame 210 A clamp 220 for fixing the purifier 100 in a state that the purifier 100 is mounted on the purifier support frame 210 and a clamp 220 installed at both ends of the purifier support frame, A vertical frame 230 supporting the frame 210 and a base frame 240 provided below the vertical frame 230 and supporting the purifying part support frame 210 and the vertical frame 230 on the ground. A frame 200; And
And an inflow pipe 310 connected to both ends of the purifier 100 for introducing polluted water into the purifier 100 and a discharge pipe 310 for discharging purified purified water to the other end of the purifier 100, And a circulation pump 330 connected to the inlet piping 310 and the discharge piping 320 for circulating the polluted water and the purified water,
The filter 120 is composed of a reverse osmosis membrane in the form of a cylinder and a center shaft tube 121 for supporting the filter 120 is provided at the center of the filter 120. Inside the center shaft tube 121, 121 is provided with a screw engagement groove 121a which is inclined from the end portion to the center side,
The filter adapter 150 has a smaller diameter than the inner diameter of the central shaft tube 121 and has a fastening protrusion (not shown) formed on the outer side thereof to be fastened in the inner direction of the central shaft tube 121 along the helical fastening groove 121a A filter connection part 151 provided with a filter 151b,
The filter 120 has a diameter larger than that of the central axis tube 121 in the middle of the filter connection part 151 so that the filter 120 is separated from the other filters 120 connected to the filter 120 by a predetermined distance A filter packing 152a in the form of a ring is further provided at both ends of the filter spacing part 152 along the outer periphery of the filter connecting part 151 so that the fastening protrusions 151b, Is tightened by the filter packing (152a) while another filter is connected to the filter (120) by rotating the filter (120) in the screw engagement groove (121a) Reverse osmosis purification water treatment system capable of maintaining performance.
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