KR20100003404U - Membrane filter - Google Patents

Membrane filter Download PDF

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Publication number
KR20100003404U
KR20100003404U KR2020080012646U KR20080012646U KR20100003404U KR 20100003404 U KR20100003404 U KR 20100003404U KR 2020080012646 U KR2020080012646 U KR 2020080012646U KR 20080012646 U KR20080012646 U KR 20080012646U KR 20100003404 U KR20100003404 U KR 20100003404U
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filter
filter member
shaft
membrane
insertion hole
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KR2020080012646U
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Korean (ko)
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지정열
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지정열
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/10—Spiral-wound membrane modules
    • B01D63/103—Details relating to membrane envelopes
    • B01D63/1031—Glue line or sealing patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/003—Membrane bonding or sealing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/14—Specific spacers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/58—Fusion; Welding

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

본 고안은 멤브레인 필터에 관한 것으로서, 좀더 상세하게는 상하 여과막(12)(12) 사이로 공간재(13)를 적층 삽입하여 테두리를 따라 접합 마감한 필터부재(10)를 축봉(50)에 나권형으로 권취하되, 상기 필터부재(10)의 상하 여과막(12)(12)은 수지계 재질로서 테두리를 따라 열 융착에 의해 접합하는 열접착부(20)를 형성하고, 상기 필터부재(10)의 중앙 하부에 축봉 삽입공(15)을 형성하여 상기 삽입공으로 축봉(50)을 삽입하여 양측방향에서 나권형으로 권취하도록 제공하므로서, 필터부재의 상하 여과막 테두리를 종래의 화학 접착제에 의한 접착 방식이 아닌 열 융착 방식에 의해 접합하여 접착제에 의한 정수물의 2차 오염을 방지하므로 위생성을 극대화함은 물론 축봉을 필터부재의 단부가 아닌 중앙부에 접합하여 양측으로 나권하므로 정수물의 흐름을 개선하여 축봉으로 신속 배출하여 효율성을 극대화하는데 그 특징이 있다.

Figure P2020080012646

정수기, 멤브레인, 필터, 정수, 나권형, 축봉, 열 융착

The present invention relates to a membrane filter, and more particularly, spirally wound filter element (10) in the axial rod (50) by laminating and inserting the space member (13) between the upper and lower filtration membranes (12, 12). The upper and lower filtration membranes 12 and 12 of the filter member 10 are formed of a resin-based material, and form a heat adhesive portion 20 to be joined by heat fusion along an edge thereof, and the center lower portion of the filter member 10. A shaft rod insertion hole 15 is formed in the shaft hole 50 to be inserted into the insertion hole so as to be wound in a spiral shape in both directions, so that the upper and lower filtration membrane edges of the filter member are not thermally bonded by a conventional chemical adhesive. This method prevents secondary contamination of purified water by bonding by gluing, and maximizes hygiene. Also, by connecting the shaft to the center instead of the end of the filter member, it is spirally wound on both sides to improve the flow of purified water. It is characterized by maximizing efficiency by discharging the rod quickly.

Figure P2020080012646

Water Purifier, Membrane, Filter, Water Purifier

Description

멤브레인 필터{MEMBRANE FILTER}Membrane Filters {MEMBRANE FILTER}

본 고안은 테두리가 접합 마감되는 상하 여과막 사이로 공간재가 적층 형성된 필터부재를 축봉에 나권형으로 권취하는 멤브레인 필터에 관한 것으로서, 좀더 상세하게는 상하 여과막의 테두리를 종래의 화학 접착제를 사용하는 접착 방식이 아닌 열 융착 방식에 의해 접합하므로 화학 접착제에 의한 정수물의 2차 오염을 방지하고, 축봉을 필터부재의 단부가 아닌 중앙에 삽입하여 양측으로 나권하므로 정수물의 흐름을 개선하여 축봉으로 신속 배출하므로 위생성, 효율성 등을 우수하게 개선하는 멤브레인 필터에 관한 것이다.The present invention relates to a membrane filter for winding a filter member formed by laminating a space member between the upper and lower filtration membranes of which the edges are bonded to each other in a spiral wound shape, and more particularly, an adhesive method using a conventional chemical adhesive for the upper and lower filtration membranes. It prevents secondary contamination of purified water by chemical adhesives because it is bonded by heat fusion method, and inserts the shaft into the center instead of the end of the filter member and spirals to both sides to improve the flow of purified water and quickly discharge it to the shaft. The present invention relates to a membrane filter for improving efficiency and the like.

일반적으로 정수기 필터는 물속에 잔존하는 각종 오염 물질을 제거하고 인체에 무해한 물을 제공하는 기능을 행한다.In general, the water purifier filter functions to remove various contaminants remaining in the water and to provide water that is harmless to the human body.

이러한 정수기 필터는 크게 물속에 잔존하는 각종 오염 물질을 흡착 제거하는 방법과 여과 제거하는 방법이 있다.Such a water purifier filter has a method of adsorbing and removing various contaminants remaining in water and a method of filtering and removing.

전자의 흡착 제거방법에는 각종 모래류, 활성탄, 이온수지 등이 사용되고, 후자의 여과 제거방법에는 부직포, 중공사막, 나노막, 역삼투막 등의 여과막이 사용되고 있다.Various sands, activated carbon, ion resins, etc. are used for the adsorption removal method of the former, and the filtration membranes, such as a nonwoven fabric, a hollow fiber membrane, a nano membrane, and a reverse osmosis membrane, are used for the latter filtration removal method.

특히, 최근에는 상기 여과막의 공경이 나노 크기까지 개발되어 각종 미생물, 유무기 분자 등의 각종 오염 물질까지도 여과하도록 제공되고 있다.In particular, recently, the pore size of the filtration membrane has been developed up to nano size, and has been provided to filter various contaminants such as various microorganisms and organic-inorganic molecules.

이러한 여과막을 이용한 종래 멤브레인 필터는 도 1 및 도 2에 도시된 바와 같이 상하 여과막(2)(2) 사이로 공간재(3)를 삽입하되, 상기 여과막의 테두리를 따라 화학 접착제로 접합 마감한 필터부재(1)를 형성하여, 상기 필터부재(1)의 끝단을 축봉(5)에 접착한 후 나권형으로 권취하여 제조하게 된다.In the conventional membrane filter using such a filtration membrane, the spacer member 3 is inserted between the upper and lower filtration membranes 2 and 2, as shown in FIGS. 1 and 2, and the filter member is bonded and finished with a chemical adhesive along the edge of the filtration membrane. (1) is formed, the end of the filter member (1) is bonded to the shaft rod (5) and then wound into a spiral wound to manufacture.

이와 같이 제조되는 필터는 별도 케이스에 내장 사용된다.The filter thus produced is used in a separate case.

이와 같은 멤브레인 필터는 정수하고자 하는 물을 케이스의 입수구를 통해 주입하면, 물이 필터부재(1)의 상하 여과막(2)(2)을 통과하면서 물속에 포함되는 각종 오염물질을 여과 제거하게 되는 것이다.Such a membrane filter is to inject water to be purified through the inlet of the case, the water is filtered through the upper and lower filtration membranes (2) (2) of the filter member 1 to remove various contaminants contained in the water. .

그리고 상기 여과막을 통과하여 정화된 정수물은 필터부재(1) 내부를 따라 이동되어 축봉(5)을 통해 배출 공급하게 되는 것이다.The purified water passed through the filtration membrane is moved along the inside of the filter member 1 to be discharged and supplied through the shaft 5.

그러나 상기한 종래 멤브레인 필터는 다음과 같은 문제점이 있었다.However, the conventional membrane filter has the following problems.

첫째, 상기 필터부재(1)의 상하 여과막(2)(2)을 에폭시, 우레탄, 각종 유무기 접착제 등과 같은 화학 접착제에 의해 접착하기 때문에 여과막을 통과한 정수물이 화학 접착제에 접촉하면서 2차 오염되는 비 위생적인 문제점이 있었다.First, since the upper and lower filtration membranes (2) and (2) of the filter member (1) are bonded by chemical adhesives such as epoxy, urethane, and various organic / inorganic adhesives, the purified water passing through the filtration membranes is in contact with the chemical adhesives for secondary contamination. There were becoming non-hygienic issues.

둘째, 상기 필터부재(1)는 일측 단부가 축봉(5)에 접착된 상태로 나권되기 때문에 상기 축봉(5)에 접착된 반대측 끝단부 위치의 상하 여과막(2)(2)을 통과하는 정수물은 상기 필터부재(1)의 전체 길이 만큼 내부로 이동하여야 축봉(5)을 통해 공급될 수 있기 때문에 필터부재 내부에서 정수물의 흐름이 신속하고 원활하게 제공되지 못하는 문제점이 있었다.Second, since the filter member 1 is spirally wound with one end attached to the shaft 5, the purified water passing through the upper and lower filtration membranes 2 and 2 at the opposite end portion bonded to the shaft 5. Since there is a problem that the purified water flow in the filter member can not be provided quickly and smoothly because it can be supplied through the shaft (5) to move inside the entire length of the filter member (1).

즉, 상기 필터부재(1)의 여과막(2)(2)을 통과한 정수물이 축봉을 통해 신속하고 효과적으로 배출 공급되지 못하므로 사용 효율성이 저하되는 문제점이 있었다.That is, since the purified water passing through the filtration membranes 2 and 2 of the filter member 1 is not quickly and effectively discharged through the shaft, there is a problem in that the use efficiency is lowered.

본 고안은 상기한 종래 기술이 갖는 제반 문제점을 해결하고자 고안된 것으로서, 필터부재의 상하 여과막 테두리를 종래의 화학 접착제에 의한 접착 방식이 아닌 열 융착 방식에 의해 접합하여 화학 접착제에 의한 정수물의 2차 오염을 방지하므로 위생성을 극대화함은 물론 축봉을 필터부재의 단부가 아닌 중앙부에 삽입하여 양측으로 나권하므로 정수물의 흐름을 개선하여 축봉으로 신속 배출하여 효율성을 극대화하는데 그 목적이 있다.The present invention is designed to solve the above problems of the prior art, the secondary contamination of the purified water by the chemical adhesive by joining the upper and lower filter membrane edge of the filter member by a heat fusion method, rather than the conventional adhesive method The purpose of maximizing hygiene as well as inserting the shaft into the center rather than the end of the filter member is to roll to both sides, so that the flow of purified water is quickly discharged to the shaft to maximize efficiency.

이러한 본 고안은This invention is

상하 여과막 사이로 공간재를 적층 삽입하여 테두리를 따라 접합 마감한 필터부재를 축봉에 나권형으로 권취하되,Inserting the space member between the upper and lower filtration membranes, and winding the filter member bonded and finished along the rim to the spiral rod,

상기 필터부재의 상하 여과막은 수지계 재질로서 테두리를 따라 열 융착에 의해 접합하는 열접착부를 형성하고,The upper and lower filtration membranes of the filter member are made of a resin-based material, and form a thermal adhesive portion joined by thermal fusion along an edge thereof.

상기 필터부재의 중앙 하부에 축봉 삽입공을 형성하여 상기 삽입공으로 축봉을 삽입하여 양측방향에서 나권형으로 권취함에 그 특징이 있다.A shaft rod insertion hole is formed in the center lower portion of the filter member, and the shaft rod is inserted into the insertion hole.

본 고안의 상기 축봉에는 필터부재의 축봉 삽입공 입구에 위치하는 부위로 완만 곡선 형상의 접착부를 형성하여 상기 필터부재의 축봉 삽입공 입구를 열 융착하여 마감함에 그 특징이 있다.The shaft of the present invention is characterized in that it forms a smooth curve-shaped adhesive portion to the portion located at the inlet of the shaft insertion hole of the filter member to heat-sealed the inlet of the shaft insertion hole of the filter member.

이러한 본 고안은 필터부재의 상하 여과막 테두리를 종래 화학 접착제에 의한 접착 방식이 아닌 열 융착 방식에 의해 접합하여 화학 접착제에 의한 정수물의 2차 오염을 방지하므로 위생성을 극대화함은 물론 축봉을 필터부재의 단부가 아닌 중앙부에 삽입하여 양측으로 나권하므로 정수물의 흐름을 개선하여 축봉으로 신속 배출하여 효율성을 극대화하는 효과를 갖는 것이다.The present invention prevents secondary contamination of purified water by chemical adhesives by joining the upper and lower filter membrane edges of the filter members by a thermal fusion method rather than by a conventional chemical adhesive, thereby maximizing hygiene as well as the shaft of the filter member. It is inserted into the center of the end rather than the end, so that the spiral wound on both sides has the effect of maximizing efficiency by improving the flow of purified water quickly discharged to the shaft.

이하, 상기한 본 고안의 바람직한 실시 예를 첨부도면을 참조하여 구체적으로 살펴보기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

즉, 본 고안의 멤브레인 필터는 도 3 내지 도 5에 도시된 바와 같이,That is, the membrane filter of the present invention, as shown in Figure 3 to 5,

상하 여과막(12)(12) 사이로 공간재(13)를 적층 삽입하되, 상기 여과막의 테두리를 따라 접합 마감한 필터부재(10)를 축봉(50)에 나권형으로 권취하되,While inserting the spacer material 13 between the upper and lower filtration membranes 12 and 12 in a lamination manner, the filter member 10 bonded and finished along the rim of the filtration membrane is wound around the shaft 50 in a spiral wound shape,

상기 필터부재(10)의 상하 여과막(12)(12)은 수지계 재질로서 테두리를 따라 열 융착에 의해 접합하는 열접착부(20)를 형성하고,The upper and lower filtration membranes 12 and 12 of the filter member 10 are formed of a heat-bonding portion 20 to be bonded by heat fusion along the edge as a resin material,

상기 필터부재(10)의 중앙 하부에 축봉 삽입공(15)을 형성하여 상기 삽입공으로 축봉(50)을 삽입하여 양측방향에서 나권형으로 권취하도록 이루어진다.A shaft rod insertion hole 15 is formed in the center lower portion of the filter member 10 to insert the shaft rod 50 into the insertion hole so as to be wound in a spiral wound in both directions.

상기 축봉(50)에는 필터부재의 축봉 삽입공(15) 입구에 위치하는 부위로 완 만 곡선 형상의 접착부(52)를 형성하여 상기 필터부재의 축봉 삽입공(15) 입구를 열 융착하여 마감하도록 구성된다.The shaft bar 50 is formed at the inlet of the shaft insertion hole 15 of the filter member to form a smooth curved adhesive portion 52 to heat-sealed the inlet of the shaft insertion hole 15 of the filter member. It is composed.

미설명부호로서, 55는 축봉(55)에 형성된 통공, 100은 필터 케이스를 나타내는 것이다.Reference numeral 55 denotes a through hole formed in the shaft rod 55, and 100 denotes a filter case.

이러한 본 고안은 필터 케이스의 주입구를 통해 정수하고자 하는 물을 주입하면, 물이 축봉에 나권형으로 권취된 필터부재(10)의 상하 여과막(12)(12)을 통과하면서 각종 오염 물질을 여과하여 제거하게 된다.When the water to be purified is injected through the inlet of the filter case, the present invention filters the various contaminants while the water passes through the upper and lower filtration membranes 12 and 12 of the filter member 10 wound in a spiral wound on the shaft. Will be removed.

특히, 상기 여과막(12)(12)은 나노 크기의 공경을 형성하기 때문에 정수하고자 하는 물을 효과적으로 여과하게 된다.In particular, since the filtration membranes 12 and 12 form nano-sized pore diameters, the water to be purified is effectively filtered.

이와 같이 여과막을 통해 여과된 정수물은 필터부재 내부를 통해 축봉(50)으로 흘러 배출되게 되는 것이다.The purified water filtered through the filtration membrane is discharged to the shaft 50 through the filter member.

이때, 상기 정수물은 필터부재(10)의 상하 여과막(12)(12)이 종래의 화학 접착제에 의한 접착 방식이 아닌 열 융착방식에 의해 접착한 열접착부(20)로 접착되어 있기 때문에 정수물의 접착제에 의한 2차 오염 문제를 방지하여 위생적으로 공급하게 되는 것이다.At this time, since the upper and lower filtration membranes 12 and 12 of the filter member 10 are adhered to the thermal bonding portion 20 bonded by a thermal fusion method instead of a conventional chemical adhesive method, the purified water is Hygienic supply is prevented by the problem of secondary contamination by the adhesive.

또한, 상기 필터부재(10)의 상하 여과막(12)(12)을 통과한 정수물은 필터부재의 중앙에 위치하는 축봉 위치까지만 흘러 이동하면 축봉을 통해 배출 공급되기 때문에 정수물의 흐름 공급을 원활히 제공하게 되는 것이다.In addition, since the purified water passing through the upper and lower filtration membranes 12 and 12 of the filter member 10 flows only to the shaft position positioned in the center of the filter member, the purified water is supplied through the shaft to supply the flow of purified water smoothly. Will be done.

다시 말하면, 상기 축봉(50)을 필터부재(10)의 중앙에 삽입하여 접착한 상태로 양측방향에서 나권하여 형성하기 때문에 상기 필터부재의 가장 먼 위치의 여과 막(12)을 통과한 정수물이라도 종래와 같이 필터부재의 전체 길이를 이동하는 것에 비해 절반의 길이 만큼만 흘러 이동하게 되면 축봉으로 배출 공급되게 되는 것이다.In other words, since the shaft rod 50 is inserted into the center of the filter member 10 and is formed by being wound in both directions in the bonded state, even if the purified water has passed through the filtration membrane 12 at the furthest position of the filter member. Compared to moving the entire length of the filter member as in the prior art, only half of the length of the filter member is discharged and supplied to the shaft.

더우기, 상기 축봉(50)은 필터부재의 축봉 삽입공(15)에 삽입한 상태로 축봉 삽입공(15) 입구에 위치하는 부위로 형성된 완만 곡선 형상의 접착부(52) 부위만을 필터부재와 함께 열 접착하여 마감하기 때문에 종래 축봉의 단부에 전체적으로 필터부재를 접착하는 방식에 의해 간편함은 물론 누수 우려가 완전 방지되는 효과, 그리고 접착을 위한 화학 접착제 사용의 배제로 위생성을 우수하게 제공하는 잇점을 갖게 되는 것이다.Moreover, the shaft bar 50 is opened in the shaft insertion hole 15 of the filter member in a state that is located at the entrance of the shaft insertion hole 15, only the curved portion of the adhesive portion 52 formed with the curve member is opened with the filter member Since it is finished by bonding the filter member to the end of the conventional shaft as a whole, not only is it simple, but also the effect of preventing the leakage is completely prevented, and the advantage of providing excellent hygiene by eliminating the use of chemical adhesive for adhesion will be.

도 1은 종래 멤브레인 필터가 전개된 상태의 정면도.1 is a front view of a state where a conventional membrane filter is deployed.

도 2는 도 1의 평면도.2 is a plan view of FIG.

도 3은 본 고안의 멤브레인 필터가 전개된 상태의 정면도.3 is a front view of a state where the membrane filter of the present invention is deployed.

도 4는 도 3의 평면도.4 is a plan view of FIG.

도 5는 도 3이 권취되어 필터 케이스에 내장된 상태의 일 례를 보여주는 단면도.FIG. 5 is a cross-sectional view showing an example of a state in which FIG. 3 is wound and built in a filter case; FIG.

**도면의 주요 부분에 대한 부호의 설명**** Description of the symbols for the main parts of the drawings **

10: 필터부재 12: 여과막10: filter member 12: filtration membrane

13: 공간재 50: 축봉13: space member 50: shaft

20: 열접착부 15: 축봉 삽입공20: heat seal 15: shaft insert hole

52: 접착부52: adhesive part

Claims (2)

상하 여과막(12)(12) 사이로 공간재(13)를 적층 삽입하되, 상기 여과막의 테두리를 따라 접합 마감한 필터부재(10)를 축봉(50)에 나권형으로 권취하는 멤브레인 필터에 있어서,In the membrane filter which is inserted into the space member 13 between the upper and lower filtration membranes 12 and 12, but wound around the filter member 10, which is bonded and finished along the rim of the filtration membrane, in a spiral wound shape. 상기 필터부재(10)의 상하 여과막(12)(12)은 수지계 재질로서 테두리를 따라 열 융착에 의해 접합하는 열접착부(20)를 형성하고,The upper and lower filtration membranes 12 and 12 of the filter member 10 are formed of a heat-bonding portion 20 to be bonded by heat fusion along the edge as a resin material, 상기 필터부재(10)의 중앙 하부에 축봉 삽입공(15)을 형성하여 상기 삽입공으로 축봉(50)을 삽입하여 양측방향에서 나권형으로 권취하도록 이루어진 것을 특징으로 하는 멤브레인 필터.Membrane filter, characterized in that to form a shaft rod insertion hole (15) in the lower center of the filter member (10) by inserting the shaft rod (50) into the insertion hole wound in a spiral wound in both directions. 제1항에 있어서,The method of claim 1, 상기 축봉(50)에는 필터부재의 축봉 삽입공(15) 입구에 위치하는 부위로 완만 곡선 형상의 접착부(52)를 형성하여 상기 필터부재의 축봉 삽입공(15) 입구를 열 접착하여 마감하도록 이루어진 것을 특징으로 하는 멤브레인 필터.The shaft bar 50 is formed to be a portion located at the inlet of the shaft insertion hole (15) of the filter member to form a gently curved adhesive portion 52 to heat-bond the shaft insertion hole (15) inlet of the filter member to finish Membrane filter, characterized in that.
KR2020080012646U 2008-09-19 2008-09-19 Membrane filter KR20100003404U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101709250B1 (en) 2016-06-29 2017-02-23 이제영 A Fixing Device of a Filter Shaft Membrane

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101709250B1 (en) 2016-06-29 2017-02-23 이제영 A Fixing Device of a Filter Shaft Membrane

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