JPH0233916Y2 - - Google Patents
Info
- Publication number
- JPH0233916Y2 JPH0233916Y2 JP1986104576U JP10457686U JPH0233916Y2 JP H0233916 Y2 JPH0233916 Y2 JP H0233916Y2 JP 1986104576 U JP1986104576 U JP 1986104576U JP 10457686 U JP10457686 U JP 10457686U JP H0233916 Y2 JPH0233916 Y2 JP H0233916Y2
- Authority
- JP
- Japan
- Prior art keywords
- water
- activated carbon
- ion exchange
- exchange resin
- filter
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 68
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 54
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 22
- 239000003456 ion exchange resin Substances 0.000 claims description 20
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 20
- 238000011045 prefiltration Methods 0.000 claims description 17
- 238000001914 filtration Methods 0.000 claims description 14
- 238000000746 purification Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 238000001223 reverse osmosis Methods 0.000 description 12
- 230000008929 regeneration Effects 0.000 description 8
- 238000011069 regeneration method Methods 0.000 description 8
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 7
- 239000000460 chlorine Substances 0.000 description 7
- 229910052801 chlorine Inorganic materials 0.000 description 7
- 238000005342 ion exchange Methods 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- 238000011282 treatment Methods 0.000 description 6
- 239000010419 fine particle Substances 0.000 description 4
- 239000005416 organic matter Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003729 cation exchange resin Substances 0.000 description 2
- 238000000502 dialysis Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020681 well water Nutrition 0.000 description 2
- 239000002349 well water Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 208000007502 anemia Diseases 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は上水あるいか井戸水より微粒子、有機
物、遊離塩素、硬度成分等の除去を行なうための
精製ユニツトに関し、特に、透析用水製造のため
の蒸留あるいは逆浸透装置の前処理に適した上記
精製ユニツトに関する。[Detailed description of the invention] [Field of industrial application] The present invention relates to a purification unit for removing fine particles, organic matter, free chlorine, hardness components, etc. from tap water or well water, and is particularly suitable for producing water for dialysis. The present invention relates to the above purification unit suitable for pretreatment of distillation or reverse osmosis equipment.
透析液としては濃縮透析液を30〜40倍に稀釈し
て使用する方法がとられている。この稀釈用水と
しては水道水、井戸水をそのままあるには軟水処
理した程度で使用されていたが、合併症防止のた
め高度な水処理を行つたものが用いられるように
なつてきた。この水処理の１つとして逆浸透装置
が用いられている。このような逆浸透装置により
処理された水はタンク等に保存しておくと細菌等
による再汚染の問題もあるため透析液稀釈用水製
造用としては病院内に設置して必要に応じて運転
することにより再汚染の問題を回避することが好
ましく、病院設置用としてコンパクトな逆浸透装
置も開発されている。
As a dialysate, a method is used in which a concentrated dialysate is diluted 30 to 40 times. Water for dilution used to be tap water or well water that had been treated with soft water, but now water that has undergone advanced treatment to prevent complications has come to be used. A reverse osmosis device is used as one of these water treatments. If the water treated by such a reverse osmosis device is stored in a tank, etc., there is a problem of re-contamination with bacteria, etc. Therefore, it should be installed in the hospital for producing water for diluting dialysate and operated as necessary. It is desirable to avoid the problem of recontamination by this, and compact reverse osmosis devices have also been developed for hospital installation.
しかし、逆浸透処理のみでは原水中の微粒子に
よる逆浸透膜及び逆浸透装置各部の詰まり、汚れ
で逆浸透装置を安定して運転できないばかりでは
なく、遊離塩素の除去率は35％程度であり、塩素
が残留すると貧血等の合併症をもたらし、水の硬
度成分も硬水症等をもたらすため除去すべきもの
であるがこの除去も充分でないといつた問題があ
つた。
However, with reverse osmosis treatment alone, the reverse osmosis membrane and various parts of the reverse osmosis device are clogged and contaminated by fine particles in raw water, making it impossible to operate the reverse osmosis device stably, and the removal rate of free chlorine is only about 35%. When chlorine remains, it causes complications such as anemia, and the hardness component of water also causes hydrohydrosis, so it should be removed, but there was a problem that this removal was not sufficient.
本考案者らは上記のような状況に鑑み、逆浸透
処理を安定に運転でき、かつ、合併症のおそれの
ない透析用水を逆浸透法で製造するための前処理
装置につき鋭意検討した結果、病院内に設置して
も過度に場所を要することのなく、上記の問題を
解消し得る前処理装置に関する本考案に到達し
た。
In view of the above-mentioned circumstances, the inventors of the present invention have conducted extensive studies on a pretreatment device for producing dialysis water by reverse osmosis, which can operate reverse osmosis treatment stably and without the risk of complications. The present invention relates to a pretreatment device that can solve the above problems without requiring an excessive amount of space even when installed in a hospital.
即ち、本考案の要旨は用水入口と処理水出口を
有し、内部が複数の部屋に仕切られた外筒容器
と、各々の部屋に収納されたプレフイルター、活
性炭濾過層、イオン交換樹脂層及びチエツクフイ
ルターとからなり、用水入口、プレフイルター、
活性炭濾過層、イオン交換樹脂層、チエツクフイ
ルター及び処理水出口がこの順に連通してなり、
活性炭濾過層及びイオン交換樹脂層を収納した部
屋には各々上記連通とは独立に外筒容器外部に連
通する水の入口と出口とを設けてなり、プレフイ
ルターとチエツクフイルターとを各々外筒容器の
上部の上蓋付き部屋に収納されてなる精製ユニツ
トにある。 That is, the gist of the present invention is an outer cylindrical container having a water inlet and a treated water outlet, the inside of which is partitioned into a plurality of chambers, a prefilter housed in each chamber, an activated carbon filtration layer, an ion exchange resin layer, and Consists of check filter, water inlet, pre-filter,
The activated carbon filtration layer, the ion exchange resin layer, the check filter, and the treated water outlet are connected in this order,
The chamber housing the activated carbon filtration layer and the ion exchange resin layer is each provided with a water inlet and an outlet that communicate with the outside of the outer cylindrical container independently of the above-mentioned communication, and a prefilter and a check filter are connected to the outer cylindrical container. The refining unit is housed in a room with a lid on top.
以下に本考案を図面を用いて説明する。 The present invention will be explained below using the drawings.
第１図は本考案の精製ユニツトの１実施態様例
を示す断面図である。 FIG. 1 is a sectional view showing one embodiment of the purification unit of the present invention.
本ユニツトの外筒容器１はその中を隔壁３，
４，５，６で間仕切られており、その各部屋にプ
レフイルター１２、活性炭濾過層１３、イオン交
換樹脂層１４及びチエツクフイルター１５が収納
されている。プレフイルター１２は用水中の大き
なごみを除去するためのものであり、25μm程度
のものを阻止できるものであればどのようなもの
も用いることができる。活性炭濾過層１３は水中
の有機物や遊離塩素を除去するためのもので通常
のやしがら活性炭等を充填したものを用いること
ができる。イオン交換樹脂層１４は水を軟化する
ためのもので陽イオン交換樹脂、好ましくは強酸
性陽イオン交換樹脂を充填したものを用いること
ができる。チエツクフイルター１５は活性炭濾過
及びイオン交換工程で発生した微粒子を除去する
ためのもので5μm以上のものを阻止できるフイル
ターが好ましく用いられる。プレフイルター及び
チエツクフイルターは活性炭やイオン交換樹脂層
に比べて交換頻度が高いため、交換が容易なよう
にカートリツジタイプのものを用い上部の部屋に
収納し、上蓋２が外せるような構造になつている
ことが好ましい。用水入口２１から導入された用
水はまずプレフイルター室７に入り、プレフイル
ターで濾過されて活性炭濾過室８に入る。そこで
活性炭により遊離塩素、有機物等を除去された水
は連通管１８を通つてイオン交換室に入る。ここ
でイオン交換樹脂層を通過することによつてカル
シウム、マグネシウム、鉄、アルミニウム等のイ
オンを除去された水は連通管１９によりチエツク
フイルター室１０に運ばれ、チエツクフイルター
１５で濾過されることにより活性炭濾過、イオン
交換工程で発生した活性炭やイオン交換樹脂等の
微粒子が除去された水は処理水室１１を経て処理
水出口２６より取り出される。 The outer cylindrical container 1 of this unit has a partition wall 3,
The room is partitioned into rooms 4, 5, and 6, and a prefilter 12, an activated carbon filtration layer 13, an ion exchange resin layer 14, and a check filter 15 are housed in each room. The prefilter 12 is for removing large particles in the water, and any filter can be used as long as it can block particles of about 25 μm. The activated carbon filtration layer 13 is for removing organic matter and free chlorine in water, and can be made of ordinary coconut shell filled with activated carbon or the like. The ion exchange resin layer 14 is for softening water, and may be filled with a cation exchange resin, preferably a strongly acidic cation exchange resin. The check filter 15 is for removing fine particles generated during the activated carbon filtration and ion exchange steps, and a filter capable of blocking particles of 5 μm or larger is preferably used. Since the pre-filter and check filter need to be replaced more frequently than the activated carbon or ion exchange resin layer, a cartridge-type filter is used for easy replacement and is stored in the upper chamber, with a structure in which the top cover 2 can be removed. It is preferable that The water introduced from the water inlet 21 first enters the prefilter chamber 7, is filtered by the prefilter, and enters the activated carbon filtration chamber 8. There, the water from which free chlorine, organic matter, etc. have been removed by the activated carbon passes through the communication pipe 18 and enters the ion exchange chamber. The water from which ions such as calcium, magnesium, iron, aluminum, etc. Water from which fine particles such as activated carbon and ion exchange resin generated in the activated carbon filtration and ion exchange steps have been removed is taken out from the treated water outlet 26 via the treated water chamber 11.
活性炭濾過室８及びイオン交換室９には各々洗
浄あるいは再生用に水の出入口２２，２３，２
４，２５が設けられていることが好ましい。逆洗
再生時に用水入口、処理水出口を封鎖できるよう
用水入口と処理水出口に各々バルブが設けられて
いることが好ましい。第１図にはイオン交換樹脂
再生用の塩水タンク１６も示されている。第１図
では塩水タンクにつながる配管がエジエクター２
９につながつており、再生用水入口３０より注入
された再生用水により塩水が吸引されイオン交換
樹脂層に流入する構造のものが示してある。 The activated carbon filtration chamber 8 and the ion exchange chamber 9 each have water inlets and outlets 22, 23, and 2 for cleaning or regeneration.
4 and 25 are preferably provided. It is preferable that valves are provided at each of the water inlet and the treated water outlet so that the water inlet and the treated water outlet can be closed during backwash regeneration. Also shown in FIG. 1 is a salt water tank 16 for regenerating the ion exchange resin. In Figure 1, the pipe leading to the salt water tank is the ejector 2.
9, and a structure in which salt water is sucked by the regeneration water injected from the regeneration water inlet 30 and flows into the ion exchange resin layer is shown.
又、通水初期にはユニツト内水通路のエアを抜
くことができるのが好ましく、第１図の例では上
蓋２にエア抜き口２７，２８を設けてある。又、
活性炭を収納した部屋及びイオン交換樹脂を収納
した部屋には各々活性炭及びイオン交換樹脂交換
用の出し入れ口を設けていてもよい。 Further, it is preferable that the air in the water passage within the unit can be removed at the initial stage of water flow, and in the example shown in FIG. 1, air removal ports 27 and 28 are provided in the upper lid 2. or,
The chamber housing the activated carbon and the chamber housing the ion exchange resin may each be provided with an inlet/outlet for exchanging the activated carbon and the ion exchange resin.
なお、各用水の出入口２１，２６，２２，２
３，２４，２５に自動弁を設ければ活性炭の逆洗
運転、イオン交換樹脂の再生運転を自動運転とす
ることも可能である。 In addition, each water supply inlet/outlet 21, 26, 22, 2
If automatic valves 3, 24, and 25 are provided, it is also possible to automatically perform the activated carbon backwash operation and the ion exchange resin regeneration operation.
本考案のユニツは通常は、用水入口２１より水
を導入すると、プレフイルター１２で用水中の大
きなごみ等が除去され、ついで活性炭層で水中の
有機物や遊離塩素等が除去され、次にイオン交換
樹脂層で水が軟化され、最後にチエツクフイルタ
ーでそれまでの工程で発生した活性炭やイオン交
換樹脂の微粉末が除去されて精製された水として
処理水出口より出る。
Normally, when water is introduced from the water inlet 21 in the unit of the present invention, large garbage etc. in the water is removed by a pre-filter 12, organic matters and free chlorine etc. in the water are removed by an activated carbon layer, and then ion exchange is performed. The water is softened in the resin layer, and finally, the activated carbon and ion exchange resin fine powder generated in the previous processes are removed in the check filter, and purified water is released from the treated water outlet.
プレフイルターやチエツクフイルターの交換は
上蓋をあけて交換すればよい。 To replace the pre-filter or check filter, simply open the top cover and replace.
活性炭の逆洗は本ユニツトの出入口２１及び２
６に接続したバルブを閉鎖した後、逆洗水入口２
３より逆洗水を導入し、逆洗水が活性炭層を下か
ら上に流れるようにし、逆洗水出口２２より放流
することにより行なうことができる。イオン交換
樹脂の再生も用水出入口２１及び２６を閉鎖した
後、塩水を再生用水入口３０より導入し、再生用
水出口２５より放流することにより行なうことが
できる。 Backwashing of activated carbon is carried out at entrances and exits 21 and 2 of this unit.
After closing the valve connected to 6, backwash water inlet 2
This can be carried out by introducing backwash water from 3, allowing the backwash water to flow from bottom to top of the activated carbon layer, and discharging it from the backwash water outlet 22. The ion exchange resin can also be regenerated by closing the water inlets and outlets 21 and 26, and then introducing salt water through the regeneration water inlet 30 and discharging it through the regeneration water outlet 25.
本考案の精製ユニツトはプレフイルター、活性
炭濾過層、イオン交換樹脂層及びチエツクフイル
ターを装備しているため逆浸透処理の前処理とし
て原水中のごみ、遊離塩素、フリーイオン、硬度
成分を除去可能なため、逆浸透処理のみで得た水
によるような合併症等の問題もなく、さらに、こ
れらの装置を外筒内にコンパクトに収納してある
ので設置面積が小さくて済み、病院内等のように
スペースの少ないところでも容易に設置すること
ができ、さらに、従来のような各々の装置を配管
で接続したものに比べ、接続配管による圧力損失
を小さくすることができ、効率の良いユニツトと
なる。又、プレフイルターとチエツクフイルター
を外筒内上部の部屋に収納したものは、交換頻度
の高いフイルターの交換が便利となる。
The purification unit of this invention is equipped with a prefilter, activated carbon filtration layer, ion exchange resin layer, and check filter, so it can remove dust, free chlorine, free ions, and hardness components from raw water as a pretreatment for reverse osmosis treatment. Therefore, there are no complications such as those caused by water obtained only through reverse osmosis treatment, and since these devices are compactly stored inside the outer cylinder, the installation area is small, making it ideal for use in hospitals, etc. It can be easily installed even in places with limited space, and in addition, compared to conventional systems in which each device is connected by piping, pressure loss due to connecting piping can be reduced, making it a highly efficient unit. . In addition, when the prefilter and check filter are stored in the upper chamber inside the outer cylinder, it is convenient to replace the filters that are frequently replaced.
第１図は本考案の精製ユニツトの１実施態様例
を示す断面図である。
図において、１……外筒容器、２……外筒上
蓋、３，４，５，６……隔壁、７……プレフイル
ター室、８……活性炭濾過室、９……イオン交換
室、１０……チエツクフイルター室、１１……処
理水室、１２……プレフイルター、１３……活性
炭、１４……イオン交換樹脂層、１５……チエツ
クフイルター、１６……塩水タンク、１７……塩
水、１８，１９……連通管、２１……用水入口、
２２……逆洗水出口、２３……逆洗水入口、２４
……再生水入口、２５……再生水出口、２６……
処理水出口、２７，２８……エア抜き、２９……
エジエクター、３０……再生用水入口、３１……
活性炭出し入れ口、３２……イオン交換樹脂出し
入れ口、を示す。
FIG. 1 is a sectional view showing one embodiment of the purification unit of the present invention. In the figure, 1... Outer cylinder container, 2... Outer cylinder top lid, 3, 4, 5, 6... Partition wall, 7... Prefilter chamber, 8... Activated carbon filtration chamber, 9... Ion exchange chamber, 10 ...Check filter room, 11 ... Treated water chamber, 12 ... Prefilter, 13 ... Activated carbon, 14 ... Ion exchange resin layer, 15 ... Check filter, 16 ... Salt water tank, 17 ... Salt water, 18 , 19...Communication pipe, 21...Water inlet,
22... Backwash water outlet, 23... Backwash water inlet, 24
... Recycled water inlet, 25 ... Recycled water outlet, 26 ...
Treated water outlet, 27, 28... Air bleed, 29...
Ejector, 30... Regeneration water inlet, 31...
Activated carbon inlet/outlet port, 32 . . . ion exchange resin inlet/outlet port.
Claims (1)
屋に仕切られた外筒容器と、各々の部屋に収納さ
れたプレフイルター、活性炭濾過層、イオン交換
樹脂層及びチエツクフイルターとからなり、用水
入口、プレフイルター、活性炭濾過層イオン交換
樹脂層、チエツクフイルター及び処理水出口がこ
の順に連通してなり、活性炭濾過層及びイオン交
換樹脂層を収納した部屋には各々上記連通とは独
立に外筒容器外部に連通する水の入口と出口とを
設けてなり、プレフイルターとチエツクフイルタ
ーとが各々外筒容器の上部の上蓋付き部屋に収納
されてなる精製ユニツト。 It consists of an outer cylindrical container that has a water inlet and a treated water outlet and is partitioned into multiple rooms, and a pre-filter, an activated carbon filtration layer, an ion exchange resin layer, and a check filter housed in each room. The inlet, the prefilter, the activated carbon filtration layer, the ion exchange resin layer, the check filter, and the treated water outlet are connected in this order, and the rooms housing the activated carbon filtration layer and the ion exchange resin layer each have an outer cylinder independent of the above communication. A purification unit that is provided with an inlet and an outlet for water that communicate with the outside of the container, and in which a prefilter and a check filter are each housed in a lidded chamber at the top of an outer cylindrical container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986104576U JPH0233916Y2 (en) | 1986-07-08 | 1986-07-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986104576U JPH0233916Y2 (en) | 1986-07-08 | 1986-07-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6313294U JPS6313294U (en) | 1988-01-28 |
| JPH0233916Y2 true JPH0233916Y2 (en) | 1990-09-11 |
Family
ID=30978199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986104576U Expired JPH0233916Y2 (en) | 1986-07-08 | 1986-07-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0233916Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3768042B1 (en) * | 2019-07-19 | 2022-12-07 | Electrolux Appliances Aktiebolag | Method for controlling the provision of electric power to an induction coil |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5848383B2 (en) * | 1974-04-05 | 1983-10-28 | サウス アフリカン インベンシヨンズ デベロツプメント コ−ポレ−シヨン | Tetsudoshiyariyoukenkasouchi |
| JPS5927887B2 (en) * | 1977-12-19 | 1984-07-09 | 旭光学工業株式会社 | Digital electric shutter with high and low brightness correction for single-lens reflex cameras |
| JPS6161095B2 (en) * | 1977-05-27 | 1986-12-24 | Hercules Inc |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5190549U (en) * | 1975-01-14 | 1976-07-20 | ||
| JPS5267773U (en) * | 1975-11-13 | 1977-05-19 | ||
| JPS5848383U (en) * | 1981-09-24 | 1983-04-01 | 武田 健一 | Filter body in water purifier |
| JPS5927887U (en) * | 1982-08-16 | 1984-02-21 | 日本錬水株式会社 | Small pure water sampling device |
| JPH0137745Y2 (en) * | 1984-09-25 | 1989-11-14 |
-
1986
- 1986-07-08 JP JP1986104576U patent/JPH0233916Y2/ja not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5848383B2 (en) * | 1974-04-05 | 1983-10-28 | サウス アフリカン インベンシヨンズ デベロツプメント コ−ポレ−シヨン | Tetsudoshiyariyoukenkasouchi |
| JPS6161095B2 (en) * | 1977-05-27 | 1986-12-24 | Hercules Inc | |
| JPS5927887B2 (en) * | 1977-12-19 | 1984-07-09 | 旭光学工業株式会社 | Digital electric shutter with high and low brightness correction for single-lens reflex cameras |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6313294U (en) | 1988-01-28 |
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