JPS6247068Y2 - - Google Patents
Info
- Publication number
- JPS6247068Y2 JPS6247068Y2 JP1980148733U JP14873380U JPS6247068Y2 JP S6247068 Y2 JPS6247068 Y2 JP S6247068Y2 JP 1980148733 U JP1980148733 U JP 1980148733U JP 14873380 U JP14873380 U JP 14873380U JP S6247068 Y2 JPS6247068 Y2 JP S6247068Y2
- Authority
- JP
- Japan
- Prior art keywords
- submersible pump
- fresh water
- air
- liquid
- backwashing
- 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
- 239000007788 liquid Substances 0.000 claims description 25
- 239000013505 freshwater Substances 0.000 claims description 23
- 238000011001 backwashing Methods 0.000 claims description 16
- 238000005070 sampling Methods 0.000 claims description 16
- 239000013535 sea water Substances 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Description
【考案の詳細な説明】
本考案は水中ポンプを用いて、たとえば海水等
腐蝕性の高い試料液体を間欠的に採取する一方、
待機中は前記水中ポンプを清水及び／又はエヤー
によつて逆洗するようにしたサンプリング装置に
関する。ここに逆洗とは、採取時における試料液
体の導入方向とは逆方向に清水及び／又はエヤー
を水中ポンプに向けて流し、該清水及び／又はエ
ヤーによつて水中ポンプを洗浄することをいう。
このような逆洗は、海水等の腐蝕性の高い液体に
よつて水中ポンプのインペラーや回転軸等が腐蝕
するのを防止するために必要である。しかしこの
ような逆洗はサンプリング装置の待機中常に継続
して行なわれるものではなく、清水や動力費の節
約を図るために、一時的に行なわれるのが一般的
である。[Detailed description of the invention] This invention uses a submersible pump to intermittently collect a highly corrosive sample liquid, such as seawater, while
The present invention relates to a sampling device in which the submersible pump is backwashed with fresh water and/or air during standby. Backwashing here refers to flowing clean water and/or air toward the submersible pump in the opposite direction to the direction in which the sample liquid was introduced at the time of collection, and cleaning the submersible pump with the clean water and/or air. .
Such backwashing is necessary to prevent the impeller, rotating shaft, etc. of the submersible pump from being corroded by highly corrosive liquids such as seawater. However, such backwashing is not performed continuously while the sampling device is on standby, but is generally performed temporarily in order to save on fresh water and power costs.
ところで、この種のサンプリング装置における
水中ポンプは第１図に示すように、ケーシング１
内の隔板２にて隔離された密室内に水中ポンプ本
体３を設け、該ポンプ本体の回転軸４を前記隔板
２を貫通させてケーシング１の底部近くまで突出
させ、その先端にインペラー５を設け、一方ケー
シング底部６を開口すると共に、底部近くの側壁
に透孔７……を形成し、底部の開口６と前記透孔
７……とを液体採取口となした構成にしてあるた
めに一時的な逆洗ではインペラー等の充分な腐蝕
防止をはかることは困難である。即ち、前記水中
ポンプはいわばインペラーを液体採取口に臨ませ
た構成としてあるので、一時的な逆洗では逆洗停
止後海水等液体の流動、拡散作用によつてインペ
ラーや回転軸がこれら液体と再接触してしまうか
らである。尚、図中８は液体試料配管、９は液体
試料調整槽、１０は清水タンク、１１は清水ポン
プ、１２は清水送給管、１３はエヤーコンプレツ
サ、１４はエヤー送給管である。 By the way, the submersible pump in this type of sampling device has a casing 1 as shown in Figure 1.
A submersible pump main body 3 is provided in a closed chamber separated by a partition plate 2 inside, and the rotating shaft 4 of the pump main body is made to penetrate the partition plate 2 and protrude near the bottom of the casing 1, and an impeller 5 is attached to the tip of the rotating shaft 4 of the pump main body. On the other hand, the casing bottom 6 is opened, and a through hole 7 is formed in the side wall near the bottom, and the bottom opening 6 and the through hole 7 are configured to serve as a liquid sampling port. It is difficult to sufficiently prevent corrosion of impellers, etc. with temporary backwashing. In other words, since the submersible pump has a configuration in which the impeller faces the liquid sampling port, in temporary backwashing, after the backwashing is stopped, the impeller and rotating shaft are exposed to these liquids due to the flow and diffusion of seawater and other liquids. This is because they will come into contact with you again. In the figure, 8 is a liquid sample pipe, 9 is a liquid sample adjustment tank, 10 is a fresh water tank, 11 is a fresh water pump, 12 is a fresh water supply pipe, 13 is an air compressor, and 14 is an air supply pipe.
本考案は上記欠点に鑑み、動力費が嵩んだり清
水を浪費したりすることなく一時的な逆洗だけで
待機中におけるインペラーや回転軸の確実な腐蝕
防止を図り得る新規な手段を提供するものであ
る。 In view of the above drawbacks, the present invention provides a new means that can reliably prevent corrosion of the impeller and rotating shaft during standby by only temporary backwashing without increasing power costs or wasting fresh water. It is something.
以下に本考案の実施例を図面に基づき説明す
る。第２図は本考案の一実施例を示したもので、
水中ポンプは２基Ａ，Ｂ設けられ、それぞれの液
体試料配管８ａ，８ｂ中に設けたバルブV1，V′1
によつて、一方が運転状態（試料採取状態）にあ
るときは他方が待機状態にあるように構成させて
いる。１２ａは水中ポンプＡに清水を送給する清
水送給管、１２ｂは水中ポンプＢに清水を送給す
る清水送給管、また１４ａは水中ポンプＡにエヤ
ーを送給するエヤー送給管、１４ｂはポンプＢに
エヤーを送給するエヤー送給管である。これら各
管１２ａ，１２ｂ，１４ａ，１４ｂ中に設けられ
たバルブV2〜V5は前記バルブV1，V′1に同期させ
てあり、待機中にある水中ポンプに清水及び／又
はエヤーを送給するように構成されている。且つ
各バルブV2〜V5はそれと接続された水中ポンプ
の待機中継続して開状態にあるのではなく、図外
の適宜タイマー等により、適当時間だけ開状態に
あるように制御されていて、待機中にある水中ポ
ンプを一時的に逆洗するようにしてある。 Embodiments of the present invention will be described below based on the drawings. Figure 2 shows an embodiment of the present invention.
Two submersible pumps A and B are provided, and valves V 1 and V' 1 are provided in the respective liquid sample pipes 8a and 8b.
Accordingly, when one is in an operating state (sample collection state), the other is in a standby state. 12a is a fresh water supply pipe for supplying fresh water to submersible pump A, 12b is a fresh water supply pipe for supplying fresh water to submersible pump B, and 14a is an air supply pipe for supplying air to submersible pump A, 14b is an air supply pipe that supplies air to pump B. The valves V2 to V5 provided in each of these pipes 12a, 12b, 14a, and 14b are synchronized with the valves V1 and V'1 , and are used to send fresh water and/or air to the submersible pump on standby. is configured to provide In addition, each valve V 2 to V 5 does not remain open continuously while the submersible pump connected to it is on standby, but is controlled to remain open only for an appropriate amount of time by an appropriate timer, etc. not shown. The submersible pump, which is on standby, is temporarily backwashed.
前記水中ポンプＡ，Ｂは第１図に示したものと
同様の構成のものが用いられているが、さらにそ
の液体採取口６，７……を覆うカバー体１５，１
６が付設されている。これらカバー体１５，１６
は中央が外方に膨出されたいわばちようちん形状
をした筒体であり、下端部に狭口の液体導入口１
７，１８が形成されている。 The submersible pumps A and B have the same configuration as that shown in FIG.
6 is attached. These cover bodies 15, 16
is a cylindrical body in the shape of a bell cup whose center bulges outward, with a narrow liquid inlet 1 at the bottom end.
7 and 18 are formed.
従つて、この構成によれば待機中にある水中ポ
ンプＡ又はＢに対して清水及び／又はエヤーを一
時的に供給して逆洗すると、カバー体１５，１６
内の海水等の液体は逆洗による清水及び／又はエ
ヤーによつて置換され、該水中ポンプが運転に転
じるまでの期間中、カバー体１５，１６内に清水
及び／又はエヤーが貯溜されるが、カバー体１
５，１６はその内部中央が外方に膨出した中空状
に形成してあるから、その内部に多くの清水及
び／又はエヤーを貯溜することができ、又、下端
部に開口された流体導入口１７，１８は狭口であ
るから、前記清水及び／又はエヤーがカバー体１
５，１６外に逃げ出し難く、従つて、一時的な逆
洗だけで待機中にインペラー５や回転軸４が海水
等の液体と再接触することがなくなり、インペラ
ー等の腐蝕が効果的に防止され得る。又、待機時
間がかなり長い場合は適当間隔をおいて数回、一
時的に逆洗すればよい。又、長時間待機させる場
合に、まず水中ポンプ内に清水を送り込んだ後、
続けてエヤーを送り込み、カバー体内をエヤーで
置換してもよい。尚、第２図中、第１図において
説明したものと同一の構成部材には同一番号を付
してその説明を省略する。 Therefore, according to this configuration, when backwashing is performed by temporarily supplying fresh water and/or air to the submersible pump A or B that is on standby, the cover bodies 15 and 16 are
The liquid such as seawater inside the submersible pump is replaced by fresh water and/or air by backwashing, and the fresh water and/or air is stored in the cover bodies 15 and 16 until the submersible pump starts operating. , cover body 1
5 and 16 are formed in a hollow shape with the inner center bulging outward, so a large amount of fresh water and/or air can be stored inside, and the fluid introduction opening at the lower end Since the ports 17 and 18 are narrow, the fresh water and/or air can flow through the cover body 1.
5, 16 is difficult to escape to the outside, therefore, by only temporary backwashing, the impeller 5 and rotating shaft 4 will not come into contact with liquid such as seawater again during standby, and corrosion of the impeller etc. can be effectively prevented. obtain. If the standby time is quite long, backwashing can be performed temporarily several times at appropriate intervals. In addition, when waiting for a long time, first pump fresh water into the submersible pump, then
Subsequently, air may be sent in to replace the inside of the cover body with air. In FIG. 2, the same components as those explained in FIG. 1 are designated by the same numbers and their explanations will be omitted.
次に第３図、第４図はそれぞれ本考案の他の一
実施例を示し、第３図のものはカバー体１５（又
は１６）の液体導入口１７（又は１８）を下方に
長く延出した例、第４図のものはカバー体１５
（又は１６）の液体導入口１７（又は１８）を横
方向に向けた例を示す。第３図の構成のカバー体
１５，１６は、待機時間が長いサンプリング装置
に適している。第４図の構成のカバー体１５，１
６は、矢印Ｐ方向に液体が流れているような場合
に好適である。 Next, FIGS. 3 and 4 respectively show other embodiments of the present invention, and the one in FIG. 3 has the liquid inlet 17 (or 18) of the cover body 15 (or 16) extended downward. In the example shown in Fig. 4, the cover body 15
An example is shown in which the liquid introduction port 17 (or 18) of (or 16) is oriented laterally. The cover bodies 15, 16 having the structure shown in FIG. 3 are suitable for a sampling device having a long standby time. Cover body 15, 1 configured as shown in FIG.
6 is suitable when the liquid is flowing in the direction of arrow P.
以上説明したように本考案に係る水中ポンプを
使用したサンプリング装置は、内部中央が外方に
膨出し下端部に狭口の液体導入口を備えた中空の
カバー体を、前記水中ポンプの液体採取口を覆う
ようにして取り付け、待機中は逆洗による清水及
び／又はエヤーを該カバー体内に貯溜し得るよう
に構成したものであるから、一時的な逆洗だけ
で、待機中はインペラーや回転軸が清水及び／又
はエヤーと接触しており腐蝕性の高い試料液体と
の接触が阻止されるので、インペラー等の腐蝕を
確実に防止することができる。特に、本考案にお
いては、水中ポンプの液体採取口を覆う中空のカ
バー体は、その内部中央が外方に膨出するように
形成されると共に、下端部に狭口の液体導入口を
備えているので、逆洗による清水及び／又はエヤ
ーを大量にカバー体内に長時間に亘つて貯溜する
ことができ、前記接触がより確実に防止される。
従つて、本案サンプリング装置によれば、長期に
亘つて安定したサンプリング機能を果すことが可
能となる。また、一時的な逆洗だけで上記のよう
な腐蝕防止効果を奏するので、清水の節約、ポン
プ等の動力費の節約が図れるという利点ももつ。
加えて、カバー体を付設するだけでよいので既存
の水中ポンプにも簡単に適用できるという利点も
ある。 As explained above, in the sampling device using the submersible pump according to the present invention, a hollow cover body whose inner center bulges outward and has a narrow liquid inlet at the lower end is used to collect liquid from the submersible pump. It is installed so as to cover the mouth, and is configured so that fresh water and/or air from backwashing can be stored in the cover body during standby, so only temporary backwashing is required, and the impeller and rotating Since the shaft is in contact with fresh water and/or air and is prevented from coming into contact with highly corrosive sample liquid, corrosion of the impeller, etc. can be reliably prevented. In particular, in the present invention, the hollow cover body that covers the liquid sampling port of the submersible pump is formed so that its inner center bulges outward, and is provided with a narrow liquid inlet at the lower end. Therefore, a large amount of fresh water and/or air due to backwashing can be stored in the cover body for a long time, and the above-mentioned contact can be more reliably prevented.
Therefore, according to the sampling device of the present invention, it is possible to perform a stable sampling function over a long period of time. Furthermore, since the above-mentioned corrosion prevention effect can be achieved by only temporary backwashing, there is also the advantage that fresh water and power costs for pumps and the like can be saved.
In addition, it has the advantage that it can be easily applied to existing submersible pumps since it is only necessary to attach a cover body.
第１図は従来のサンプリング装置の配管構成
図、第２図は本考案の一実施例としてのサンプリ
ング装置の配管構成図、第３図、第４図はそれぞ
れ本考案の他の一実施例を示す要部断面図であ
る。
Ａ，Ｂ……水中ポンプ、６，７……液体採取
口、１５，１６……カバー体、１７，１８……流
体導入口。
FIG. 1 is a piping configuration diagram of a conventional sampling device, FIG. 2 is a piping configuration diagram of a sampling device as an embodiment of the present invention, and FIGS. 3 and 4 each show another embodiment of the present invention. FIG. A, B... Submersible pump, 6, 7... Liquid sampling port, 15, 16... Cover body, 17, 18... Fluid introduction port.
Claims (1)
待機中は前記水中ポンプを清水及び／又はエヤー
によつて逆洗するようにしたサンプリング装置に
おいて、内部中央が外方に膨出し下端部に狭口の
液体導入口を備えた中空のカバー体を、前記水中
ポンプの液体採取口を覆うようにして取り付け、
待機中は逆洗による清水及び／又はエヤーを前記
カバー体内に貯溜し得るように構成したことを特
徴とする水中ポンプを用いたサンプリング装置。 While collecting the sample liquid using a submersible pump,
In the sampling device, the submersible pump is backwashed with fresh water and/or air during standby, and the hollow cover body has a hollow inner center that bulges outward and a narrow liquid inlet at the lower end. , installed so as to cover the liquid sampling port of the submersible pump,
A sampling device using a submersible pump, characterized in that during standby, fresh water and/or air from backwashing can be stored in the cover body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980148733U JPS6247068Y2 (en) | 1980-10-18 | 1980-10-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980148733U JPS6247068Y2 (en) | 1980-10-18 | 1980-10-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5772144U JPS5772144U (en) | 1982-05-01 |
| JPS6247068Y2 true JPS6247068Y2 (en) | 1987-12-24 |
Family
ID=29508154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1980148733U Expired JPS6247068Y2 (en) | 1980-10-18 | 1980-10-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6247068Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4325419Y1 (en) * | 1965-12-02 | 1968-10-24 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5240402Y2 (en) * | 1974-01-19 | 1977-09-13 |
-
1980
- 1980-10-18 JP JP1980148733U patent/JPS6247068Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4325419Y1 (en) * | 1965-12-02 | 1968-10-24 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5772144U (en) | 1982-05-01 |
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