KR900004724Y1 - Filtering device - Google Patents

Filtering device Download PDF

Info

Publication number
KR900004724Y1
KR900004724Y1 KR2019880001411U KR880001411U KR900004724Y1 KR 900004724 Y1 KR900004724 Y1 KR 900004724Y1 KR 2019880001411 U KR2019880001411 U KR 2019880001411U KR 880001411 U KR880001411 U KR 880001411U KR 900004724 Y1 KR900004724 Y1 KR 900004724Y1
Authority
KR
South Korea
Prior art keywords
water
pipe
siphon
filtration
tank
Prior art date
Application number
KR2019880001411U
Other languages
Korean (ko)
Other versions
KR890017277U (en
Inventor
김봉태
Original Assignee
한일소독기공 주식회사
김봉태
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한일소독기공 주식회사, 김봉태 filed Critical 한일소독기공 주식회사
Priority to KR2019880001411U priority Critical patent/KR900004724Y1/en
Publication of KR890017277U publication Critical patent/KR890017277U/en
Application granted granted Critical
Publication of KR900004724Y1 publication Critical patent/KR900004724Y1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
    • B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
    • B01D24/12—Downward filtration, the filtering material being supported by pervious surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46—Regenerating the filtering material in the filter
    • B01D24/4605—Regenerating the filtering material in the filter by scrapers, brushes, nozzles or the like placed on the cake-side of the stationary filtering material and only contacting the external layer
    • B01D24/461—Regenerating the filtering material in the filter by scrapers, brushes, nozzles or the like placed on the cake-side of the stationary filtering material and only contacting the external layer by scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46—Regenerating the filtering material in the filter
    • B01D24/4631—Counter-current flushing, e.g. by air
    • B01D24/4636—Counter-current flushing, e.g. by air with backwash shoes; with nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46—Regenerating the filtering material in the filter
    • B01D24/4631—Counter-current flushing, e.g. by air
    • B01D24/4642—Counter-current flushing, e.g. by air with valves, e.g. rotating valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F10/00—Siphons

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtration Of Liquid (AREA)

Abstract

내용 없음.No content.

Description

사이폰 여과장치Siphon filter

제1도는 본 장치의 종단면도.1 is a longitudinal sectional view of the apparatus.

제2도는 본 장치에 사용되는 이젝터의 확대단면도.2 is an enlarged cross-sectional view of an ejector used in the apparatus.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

17 : 분기관 17a : 세척수분출공17: branch pipe 17a: washing water jet hole

18 : 중앙회전관 29 : 표면세척기18: central rotary tube 29: surface cleaner

20 : 축수관 21 : 세척수공급관20: water storage pipe 21: washing water supply pipe

22 : 후로트밸브 23 : 후로트실22: float valve 23: float seal

24 : 역세척이젝터 25 : 정수관24: backwash ejector 25: water purification pipe

26 : 공기관26: air pipe

본 고안은 사이폰 여과장치에 관한 것으로, 여과층의 표면에 각종 현탁부유물 및 이물질이 퇴적되면서 여과층을 통한 여과기능에 저항이 일어날때 자동으로 사이폰력에 의한 역세척작용이 이루어지도록 한 기존의 사이폰 여과장치에서, 역세척시 역세척이젝터 및 여과층 표면세척기의 작동으로 폭기조현상과 여과층 표면 세척작용이 활발히 이루어지게 하므로서 보다 효과적인 역세척작용을 기하여 여과효율이 더욱 향상되도록 한 것이다.The present invention relates to a siphon filtration device, when the various suspended solids and foreign substances are deposited on the surface of the filtration layer, when the resistance to the filtration function through the filtration layer occurs automatically backwashing action by the siphon force In the siphon filtration device, the aeration tank and the filtration layer surface washing are actively performed by the operation of the back washing ejector and the filtration layer surface cleaner during back washing, thereby improving the filtration efficiency by providing a more effective back washing action.

사이폰 여과장치의 역세척작용이란 사이폰력을 이용하여 여과층을 통해 세척수가 역류되게 하므로서 여과층 표면에 퇴적되어 있는 현탁부유물 및 이물질들을 외부로 배출제거시켜 여과층이 세척되게 하는 작용을 말한다.The backwashing function of the siphon filtration device is a function of washing the filtration layer by discharging the suspended solids and foreign substances deposited on the surface of the filtration layer to the outside by allowing the washing water to flow back through the filtration layer using the siphon force.

그러나 이제까지의 사이폰 여과장치는 역세척작용을 함에 있어, 단순히 사이폰에 의한 물의 역세(逆勢)만으로 역세척이 이루어지게한 것이어서 여과층의 기공을 통해 속으로 파고 들어가 묻혀 있는 이물질까지 효과적으로 분리배출시킬수가 없었고, 여과층 표면에 퇴적되어 있는 현탁부유물이나 이물질도 완전히 배출제거시키기에는 미흡하여 보다 효과적인 역세척을 기대할 수 없었으며 이에 따라 여과효율이 크게 저하되는 문제점이 있다.However, the siphon filtration device so far has a backwashing effect, so that the backwashing is performed simply by backwashing the water by the siphon, thus effectively separating the foreign matters that are dug into the pores of the filtration layer. It could not be discharged, and suspended suspended solids and foreign substances deposited on the surface of the filter layer were insufficient to completely discharge and removed, and thus, more effective backwashing could not be expected, and thus there was a problem in that the filtration efficiency was greatly reduced.

본 고안은 상기와 같은 종래의 사이폰 여과장치가 지니고 있는 문제점을 해결하여 보다 효과적인 역세척작용을 이루어 여과효율을 향상시킴에 그 목적이 있는 것이다.The present invention is to solve the problems of the conventional siphon filtration device as described above to achieve a more effective backwashing action to improve the filtration efficiency.

본 고안의 내용을 첨부도면에 의거 상세히 설명하면 다음과 같다. 수조(1)의 내부하방에 다공지지판(5)을 설치하여 여과층(3)(4)과 집수실(2)을 분리시키고, 여과층(3)(4)의 상측에는 하부 다공동압판(6)과 상부동압판(7)을 설치하여 그 사이에 형성시킨 등압부(8)내로 원수공급관(9)을, 정수실(10)의 상부에는 정수유출관(11)을 연관시키며, 사이폰관(12)은 그 입구를 등압부(8) 내부에, 출구는 수봉조(13)내의 하부에 위치시키고, 수조(1) 내부에 정수수위보다 높게 설치한 헤드탱크(14)의 수압관(15)을 원수공급관(9)에, 배출관(16)을 수봉조(13) 상부에 연통시킨 통상의 것에 있어서, 세척수분출공(17a)들이 일측방향으로 나란히 뚫린 분기관(17)들을 중앙회전관(18)에 방사형으로 연관시켜서 되는 표면세척기(19)를 여과층(3) 표면에 근접되도록 하부 다공등압판(6) 중앙에 부설시킨 축수관(20)에다 회전자유롭게 설치하고, 축수관(20)과 원수공급관(9)간을 연결하는 세척수공급관(21)이 후로트밸브(22)에 의해 개폐되도록 수봉조(13)의 일측에다 후로트실(23)을 연통시키며, 하단에 역세척이젝터(24)가 연결된 정수관(25)을 정수실(10)과 집수실(2)간에 연관시켜서 그 하단에 연결한 역세척이젝터(24)에 공기관(26)의 일단을 연통시키고 공기관(26)의 타단은 주공기관(27)의 상부에 연통시키되 정수실(10)이 최고 정수 수위보다 높은 위치에 연통되게 한다.Referring to the contents of the present invention in detail based on the accompanying drawings as follows. A porous support plate 5 is provided below the water tank 1 to separate the filtration layers 3 and 4 and the collecting chamber 2, and the lower porous co-pressure plate is located above the filtration layers 3 and 4. (6) and the upper hydraulic pressure plate (7) is provided between the raw water supply pipe (9) into the isostatic pressure section (8) formed therebetween, the upper portion of the water purification chamber (10) is connected to the purified water outlet pipe (11), The phone tube 12 is a water pressure pipe of the head tank 14, the inlet of which is located inside the isostatic unit 8, the outlet is located in the lower portion of the water sealing tank 13, and installed higher than the water level in the water tank 1 ( 15) in the normal communication with the raw water supply pipe (9), the discharge pipe (16) to the top of the water sealing tank (13), the branch water pipes (17) through which the washing water jet holes (17a) are drilled side by side in a central rotary pipe ( 18) the surface washer 19, which is radially associated with the filter 18, is installed in a water-retaining pipe 20 provided in the center of the lower porous equal plate 6 so as to be close to the surface of the filter layer 3, and the water-retaining pipe 20 And enemies The float chamber 23 is connected to one side of the water sealing tank 13 so that the washing water supply pipe 21 connecting the air supply pipes 9 is opened and closed by the float valve 22, and the back washing ejector 24 is connected to the lower end. One end of the air pipe 26 is connected to the backwash ejector 24 connected to the water purification chamber 10 between the water purification chamber 10 and the water collecting chamber 2, and the other end of the air pipe 26 is connected to the main air pipe ( 27) to communicate with the upper portion of the water purification chamber 10 above the highest water level.

첨부도면중 미설명부호 9a는 원수공급밸브, 11a는 정수유출밸브, 12a는 사이폰 이젝터, 13a는 수위조절사이폰을 나타내는 것이다.In the accompanying drawings, reference numeral 9a denotes a raw water supply valve, 11a denotes a purified water outlet valve, 12a denotes a siphon ejector, and 13a denotes a water level control siphon.

본 고안의 작용효과를 설명하면, 먼저 원수공급밸브(9a)에 의해 유량이 조절되어 원수공급관(9)을 통해 등압부(8) 내부로 공급되는 원수는 하부다공 등압판(6)의 구멍들을 통해 여과층(3)(4)을 통과하면서 여과되어 집수실(2)에 이르러 역세척 이젝터(24) 및 정수관(25)을 거쳐 정수실(10)에 저장되어 정수유출관(11)을 통해 외부로 유출된다.Referring to the effect of the present invention, first, the flow rate is controlled by the raw water supply valve (9a) and the raw water supplied into the isostatic part (8) through the raw water supply pipe (9) is a hole in the lower perforated pressure plate (6) Filtered through the filtration layer (3) (4) through the backwash ejector (24) and the purified water pipe (25) and stored in the purified water chamber (10) through the purified water outlet pipe (11). Outflow.

이와같이 원수에 함유되어 있는 현탁물이나 이물질이 여과층(3)(4)에 의해 여과되는 과정에서 여과층(3)(4)의 표면에는 현탁물이나 이물질이 퇴적되어 여과층(3)(4)의 기공을 막게 되므로 여과율(3)(4)에서 원활한 여과작용을 하지 못하고 저항입력을 발생시키게 되며 그 압력이 점차 상승되면서 원수의 일부는 수압관(15)을 통해 헤드탱크(14)로 유입된다. 이렇게 유입된 물이 헤드탱크(14)내의 격벽상단으로 넘쳐흘러 배출관(16)을 통해 수봉조(13)에 저장되면서 사이폰관(12)의 하단출구를 밀봉시키게 되면 사이폰 이젝터(12a)가 사이폰관(12)의 공기를 빨게되어 사이폰작용을 일으키게 되므로 현탁부유물 및 이물질이 섞여있는 여과층(3) 표면부위의 원수를 사이폰관(12)을 통해 역류시켜 외부로 배출제거시키는 역세척작용이 이루어지는 것이다(이상은 사이폰 여과장치의 일반적인 여과 및 역세척작용을 설명한 것인바, 사이폰력에 의한 물의 역류작용만으로 완전한 역세척작용을 기대하기에 미흡함은 전술하고 있는 바와 같다).In this way, the suspension or the foreign matter contained in the raw water is filtered by the filter layer (3) (4), the suspension or foreign matter is deposited on the surface of the filter layer (3) (4), the filter layer (3) (4). Because it prevents the pores of), the filtration rate (3) (4) does not perform a smooth filtration action and generates a resistance input, and as the pressure gradually rises, a part of the raw water flows into the head tank 14 through the hydraulic pipe 15. do. When the water thus flowed overflows to the upper end of the partition wall in the head tank 14 and is stored in the water sealing tank 13 through the discharge pipe 16, the siphon ejector 12a is interposed between the water and the bottom outlet of the siphon pipe 12. Since the air of the pontoon pipe 12 is sucked to cause a siphoning action, a backwashing action is performed in which the raw water on the surface portion of the filtration layer 3 containing the suspended suspended solids and foreign substances is flowed back through the siphon tube 12 to be discharged to the outside. (The above describes the general filtration and backwashing action of the siphon filtration device, which is insufficient to expect a complete backwashing action only by the backflow action of the water by the siphoning force as described above).

이와같이 일련의 역세척작용에서 수봉조(13)내에 저장되어지는 물이 그 일측에 연설시킨 후로트실(23)로 유입되어 후로트(22a)를 부상시키게 되면 후로트 밸브(22)가 개전되면서 원수공급관(9)을 통해 공급되는 원수가 세척수공급관(21)으로 진행하여 분기관(17)으로 압송되면서 세척수분출공(17a)으로 분출케 됨에 따라 그 분출력에 의해 표면세척기(19)가 회전하게 된다.In this way, when the water stored in the water sealing tank 13 flows into the float chamber 23 in a series of backwashing operations and floats the float 22a, the float valve 22 is opened and the raw water supply pipe ( As the raw water supplied through 9) proceeds to the washing water supply pipe 21 and is pumped to the branch pipe 17, it is ejected to the washing water jet hole 17a, so that the surface washer 19 is rotated by the discharge power.

이렇게 여과층(3) 표면에 근접설치한 표면세척기(19)가 회전되면서 여과층(3) 표면부위를 휘저어 소용돌이를 일으키게 되므로 여과층(3) 표면에 퇴적된 현탁부유물 및 이물질들이 여과층(3) 표면으로부터 더욱 활발히 분리되어 사이폰관(12)을 통해 외부로 배출제거되는 동시에 정수실(10)내의 정수는 정수관(25), 역세척이젝터(24), 집수실(2), 여과층(3)(4), 등압부(8)쪽으로 계속 역류케 된다. 이때 정수실(10)내의 정수가 정수관(25)을 거쳐 역세척이젝터(24)를 경유하는 동안 진공이 발생되면서 공기관(26)을 통해 외부공기를 흡입하여 접수실(2)내에 공기포자를 발생시키게 되며 이 공기포자는 역류하고 있는 세척수와 함께 여과층(4)(3)을 통과하면서 여과층(3) 표면으로부터 분리시키는 폭기조현상을 발생시키게 되므로 여과층(4)(3)의 기공에 끼어 있던 이물질들을 여과층(3) 표면으로 밀어올려 여과층(3)(4) 및 그 표면에 현탁부유물과 이물질들을 완전히 배출제거시키게 되는 완벽한 역세척작용이 이루어지는 것이다.As the surface washer 19 installed close to the surface of the filtration layer 3 rotates, the surface portion of the filtration layer 3 is stirred to cause vortex, so suspended suspended matter and foreign substances deposited on the surface of the filtration layer 3 are filtered. ) The water is more actively separated from the surface and discharged to the outside through the siphon tube 12, and the purified water in the purified water chamber 10 is purified water 25, backwash ejector 24, collection chamber 2, and filtration layer 3. (4), it continues to flow back toward the isostatic part (8). At this time, vacuum is generated while the purified water in the water purification chamber 10 passes through the backwash ejector 24 through the water purification pipe 25, and sucks external air through the air pipe 26 to generate air spores in the reception chamber 2. The air spores pass through the filtration layers 4 and 3 together with the backwashing water and generate an aeration tank which separates them from the surface of the filtration layer 3, thus trapping the pores of the filtration layers 4 and 3. A complete backwashing operation is performed in which foreign substances are pushed to the surface of the filtration layer 3 to completely discharge and remove suspended solids and foreign substances on the filtration layer 3 and the surface thereof.

이후 정수실(10)내에 정수수위가 사이폰관(12)의 흡입구위치까지 하강되어 사이폰관(12) 내부로 공기가 도입되면 사이폰작용이 깨지게 되어 역세척작용이 중단되고, 후로트실(23)내의 수위도 하강됨에 따라 후로트(22a)가 내려가면서 밸브(22)가 폐쇄되어 세척수공급관(21)을 차단시키게 되므로 원수는 등압부(8)로만 공급되어 여과층(3)(4)을 통한 여과작용을 재개시키게 된다.Thereafter, the water level in the water purification chamber 10 is lowered to the inlet position of the siphon tube 12, and when air is introduced into the siphon tube 12, the siphon action is broken and the backwashing operation is stopped, and the float chamber 23 As the water level is lowered, the float 22a is lowered and the valve 22 is closed to block the washing water supply pipe 21, so that the raw water is supplied only to the isostatic part 8 and filtered through the filtration layer 3, 4. The operation will resume.

본 고안은 상술한 바와같이 사이폰 작용에 의한 역세척시 여과층(3)의 표면을 표면세척기(19)에 의해 휘저어 현탁부유물 및 이물질등을 여과층(3) 표면에서 보다 활발히 분리시켜 주는 동시에 정수관(10)을 통한 정수의 역류시 역세척이젝터(24)에 의해 주공기관(27)내의 공기를 공기관(26)을 통해 흡입하여 공기포자를 발생시켜서 여과층(4)(3)을 통해 그 표면에서 폭기조현상을 일으키게 하므로서 역세척효과의 향상으로 여과효율을 극대화시켜 주는 것이다.The present invention, as described above, whisks the surface of the filtration layer (3) by the surface washing machine (19) during backwashing by the siphon action to more effectively separate suspended solids and foreign substances from the surface of the filtration layer (3). When the purified water flows back through the purified water pipe 10, the backwash ejector 24 sucks air in the main air pipe 27 through the air pipe 26 to generate air spores, and then passes through the filter layers 4 and 3. It causes the aeration tank phenomenon on the surface and maximizes the filtration efficiency by improving the backwashing effect.

Claims (1)

수조(1)의 내부에 집수실(2), 여과층(3)(4), 등압부(8), 정수실(10)을 설치하여 등압부(8)에는 원수공급관(9)을, 정수실(10)에는 정수유출관(11)이 연통되고, 수압관(15)과 배출관(16)이 각기 원수공급관(9)와 수봉조(13) 연관된 헤드탱크(14)와 등압부(8)에서 수봉조(13)에 이르는 사이펀관(12)으로 구성되는 공지의 것에 있어서, 세척수분출공(17a)들이 뚫린 분기관(17)들을 방사형으로 중앙회전관(18)에 연관시킨 표면세척기(19)를 축수관(20)에 회전자유롭게 설치하고, 축수관(20)과 원수공급관(9)간을 연결하는 세척수공급관(21)을 후로트밸브(22)에 의해 자동개폐케 설치하며, 정수실(10)과 집수실(2)을 연결하는 정수관(25)의 하단에 공기관(26)이 연설된 역세척이젝터(24)을 설치하여서된 사이폰 여과장치.The collection chamber 2, the filtration layer 3, 4, the isostatic part 8, and the water purification chamber 10 are provided inside the water tank 1, and the raw water supply pipe 9 is purified in the isostatic part 8, The purified water outlet pipe 11 communicates with the seal 10, and the water pressure pipe 15 and the discharge pipe 16 are connected to the head tank 14 and the equal pressure unit 8 respectively associated with the raw water supply pipe 9 and the water sealing tank 13. In the known configuration consisting of a siphon tube 12 to the water tank 13, the surface washing machine 19 which radially associates the branch pipes 17 through which the washing water jet holes 17a are connected to the central rotary tube 18. Is installed freely in the water storage pipe (20), and the water supply pipe (21) connecting the water storage pipe (20) and the raw water supply pipe (9) is automatically installed by the float valve 22 to open and close the water purification chamber (10). Siphon filtration device by installing the back washing ejector 24, the air pipe (26) is speeched at the bottom of the water purification pipe (25) connecting the collection chamber (2).
KR2019880001411U 1988-02-08 1988-02-08 Filtering device KR900004724Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019880001411U KR900004724Y1 (en) 1988-02-08 1988-02-08 Filtering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019880001411U KR900004724Y1 (en) 1988-02-08 1988-02-08 Filtering device

Publications (2)

Publication Number Publication Date
KR890017277U KR890017277U (en) 1989-09-06
KR900004724Y1 true KR900004724Y1 (en) 1990-05-31

Family

ID=19272158

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019880001411U KR900004724Y1 (en) 1988-02-08 1988-02-08 Filtering device

Country Status (1)

Country Link
KR (1) KR900004724Y1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100390189B1 (en) * 1997-10-23 2003-09-26 동양수처리공업주식회사 Device for discharging backwashing water of filter basin

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100801421B1 (en) * 2007-09-14 2008-02-05 윤창영 A clean system for stone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100390189B1 (en) * 1997-10-23 2003-09-26 동양수처리공업주식회사 Device for discharging backwashing water of filter basin

Also Published As

Publication number Publication date
KR890017277U (en) 1989-09-06

Similar Documents

Publication Publication Date Title
JPH07204419A (en) Method and device for filtrating and backwashing solid particulate from liquid
US5013457A (en) Pressurized backwash filter
US6039866A (en) Fluidized bed filtering apparatus
KR900004724Y1 (en) Filtering device
CN218146105U (en) Active carbon filtering auxiliary device for efficient adsorption treatment of drinking purified water
KR100280975B1 (en) Cleaner for centrifuging sludge in indefinite water
JP4313497B2 (en) Backwash water self-holding pressure filter
CN213569626U (en) Oil-water separation system for oily wastewater
RU2066360C1 (en) Machine for cleaning drain well
CN107050981B (en) Circulation cleaning filtering equipment
KR100964784B1 (en) A water purifying apparatus of water supply system
KR890002200Y1 (en) Water-cleaning filters
JP3031402B2 (en) External pressure type membrane filtration device
KR890003071B1 (en) Filters using floatable filter material
CN109569090A (en) A kind of cleaned water tank of band cone bottom structure
CN213171821U (en) Novel gravity type double-valve filter tank
JP3159037B2 (en) Water purification device using circulation pump
CN214327255U (en) External MBR reactor
JP2929907B2 (en) Filter media cleaning and regenerating equipment in filtration machines
CN209619026U (en) Multistage nanofiltration device
JPH09290104A (en) Apparatus for processing fluid containing solid matter
JPH0227848Y2 (en)
KR100324727B1 (en) Separating apparatus of suspended solid in liquid solution using flexible fiber
JP3183376B2 (en) Cleaning device for backwash water holding type filtration tank
KR910002358Y1 (en) Water purifier of fish bowl

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
REGI Registration of establishment
LAPS Lapse due to unpaid annual fee