JP2005238020A - Chemical liquid injector - Google Patents

Chemical liquid injector Download PDF

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Publication number
JP2005238020A
JP2005238020A JP2004048047A JP2004048047A JP2005238020A JP 2005238020 A JP2005238020 A JP 2005238020A JP 2004048047 A JP2004048047 A JP 2004048047A JP 2004048047 A JP2004048047 A JP 2004048047A JP 2005238020 A JP2005238020 A JP 2005238020A
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Prior art keywords
path
injection
valve body
state
chemical
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Hajime Tsukamoto
肇 塚本
Hideo Matsunami
英男 松浪
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Tohzai Chemical Industry Co Ltd
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Tohzai Chemical Industry Co Ltd
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Priority to JP2004048047A priority Critical patent/JP2005238020A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To adjust the length of an injection path to insert its front end into a fluid transportation tube to a depth suitable for the inside diameter of a fluid transportation tube without detriment to the function of opening and shutting the injection path. <P>SOLUTION: The chemical injector is provided with a connection path 6 capable of connecting a chemical liquid injection path 3 with the liquid transportation tube so as to enable insertion of the front end of the injection path 3 into the transportation tube B along the direction of the tube diameter and connecting a chemical feed tube 5 with the injection path 3 in communication with each other, a scraper for freely scraping deposits adhering to the interior circumference by movement along the longitudinal direction of the injection path 3 in the injection path 3 and an insertion path 9 for an operating tool for freely moving and operating the scraper from outside of the tube, and is further provided with a selection means 11 for allowing free selection of either a first state in which the injection path 3 communicates with the connection path or a second state in which the injection path 3 concentrically communicates with the insertion path 9. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、薬液の注入路を、その先端が管径方向から流体輸送用管内に入り込むように、その流体輸送用管に接続可能に設けるとともに、薬液の供給管を前記注入路に対して連通接続可能な接続路と、前記注入路内での注入路長手方向に沿う移動でその周面に付着している付着物を掻き取り自在な掻き取り具と、前記掻き取り具を管外側から移動操作自在な操作具の挿通路とを設けてある薬液注入装置に関する。   According to the present invention, a chemical liquid injection path is provided so as to be connectable to the fluid transport pipe so that the tip thereof enters the fluid transport pipe from the pipe radial direction, and the chemical liquid supply pipe communicates with the injection path. A connectable connection path, a scraper that can scrape off deposits adhering to the peripheral surface by movement along the longitudinal direction of the injection path in the injection path, and the scraper moved from the outside of the tube The present invention relates to a chemical injection device provided with an operation tool insertion passage.

上記薬液注入装置は、流体輸送用管内を流れるプールの水や空調用の水,冷却用の水、ボイラー水,海水などの管内流体に、殺菌剤や防蝕剤,脱酸素剤,防藻剤などの薬液を注入するために使用されており、薬液を管内流体に効果的に分散させながら注入できるように、薬液の注入路をその先端が管径方向から流体輸送用管内に入り込むように接続可能に設けるとともに、薬液と管内流体とが反応して生成した生成物が薬液の注入路内に析出してその周面に付着すると薬液の注入に支障が生じるので、それらの付着物を注入路の略全長に亘って除去できるように、注入路内での注入路長手方向に沿う移動でその周面に付着している付着物を掻き取り自在な掻き取り具を設け、注入路を流体輸送用管から取り外すことなく付着物を必要に応じて掻き取ることができるように、掻き取り具を管外側から移動操作自在な操作具の挿通路を設けてある。
従来の上記薬液注入装置は、薬液の供給管と接続路との接続部を保守点検したいような場合に、供給管を接続路から外しても、管内流体の接続路からの漏れ出しを防止できるように、注入路を開閉可能な弁体を掻き取り具に一体形成し、付着物を注入路の略全長に亘って除去できるように、弁体の弁座を注入路の先端近くに形成して、操作具による掻き取り具の移動操作で注入路を開閉自在に設けている(例えば、特許文献1参照)。
The above chemical injection device is used for pipe fluids such as pool water, air conditioning water, cooling water, boiler water, seawater, etc. flowing in the fluid transportation pipes, bactericides, anticorrosives, oxygen scavengers, algae inhibitors, etc. It is used to inject the chemical liquid, and the chemical liquid injection path can be connected so that the tip enters the pipe for fluid transportation from the pipe radial direction so that the chemical liquid can be injected while being dispersed effectively in the pipe fluid If the product produced by the reaction between the chemical solution and the fluid in the pipe is deposited in the injection path of the chemical solution and adheres to its peripheral surface, it will hinder the injection of the chemical solution. In order to be able to be removed over almost the entire length, a scraper that can scrape off deposits adhering to the peripheral surface by moving along the longitudinal direction of the injection path in the injection path is provided, and the injection path is used for fluid transportation. Remove deposits as needed without removing from the tube As can be taken can is provided with a through passage of the moving operation freely operating member the scraper from the abluminal.
The conventional chemical injection device can prevent leakage of fluid in the pipe from the connection path even when the supply pipe is removed from the connection path when maintenance of the connection between the chemical supply pipe and the connection path is desired. The valve body that can open and close the injection path is formed integrally with the scraper, and the valve seat of the valve body is formed near the tip of the injection path so that the deposits can be removed over substantially the entire length of the injection path. Thus, the injection path can be opened and closed by moving the scraping tool with the operating tool (see, for example, Patent Document 1).

特開2002−126491号公報JP 2002-126491 A

このため、注入路の先端側を切除して、注入路の長さを、その先端が流体輸送用管の内径に応じた適切な深さで流体輸送用管内に入り込むように調節すると、注入路の先端近くに形成してある弁座の機能を損なって、注入路を開閉できなくなるおそれがあるので、流体輸送用管の内径ごとに対応する適切な長さの注入路を備えた薬液注入装置を製作しておく必要があり、製作コストが高くなる欠点がある。
本発明は上記実情に鑑みてなされたものであって、注入路の開閉機能を損なうことなく、注入路の長さを、その先端が流体輸送用管の内径に応じた適切な深さで流体輸送用管内に入り込むように調節できるようにすることを目的とする。
For this reason, when the tip end side of the injection path is cut off and the length of the injection path is adjusted so that the tip enters the fluid transport pipe at an appropriate depth according to the inner diameter of the fluid transport pipe, Since the function of the valve seat formed near the tip of the tube may be impaired and the injection path cannot be opened and closed, the chemical solution injection apparatus having an injection path of an appropriate length corresponding to each inner diameter of the fluid transport pipe There is a drawback that the manufacturing cost becomes high.
The present invention has been made in view of the above circumstances, and without impairing the opening / closing function of the injection path, the length of the injection path is adjusted so that the tip of the fluid has an appropriate depth corresponding to the inner diameter of the fluid transport pipe. It is intended to be able to be adjusted so as to enter into the transport pipe.

本発明の第1特徴構成は、薬液の注入路を、その先端が管径方向から流体輸送用管内に入り込むように、その流体輸送用管に接続可能に設けるとともに、薬液の供給管を前記注入路に対して連通接続可能な接続路と、前記注入路内での注入路長手方向に沿う移動でその周面に付着している付着物を掻き取り自在な掻き取り具と、前記掻き取り具を管外側から移動操作自在な操作具の挿通路とを設けてある薬液注入装置であって、前記注入路が前記接続路に連通する第1状態と、前記注入路が前記挿通路に同芯状に連通する第2状態とに管外側から択一的に切換操作自在な切換手段を設けてある点にある。   According to a first feature of the present invention, a chemical liquid injection path is provided so as to be connectable to the fluid transport pipe so that a tip thereof enters the fluid transport pipe from the pipe diameter direction, and the chemical liquid supply pipe is provided as the injection pipe. A connection path that can be connected in communication with the path, a scraper that can scrape off deposits adhering to the peripheral surface by movement along the longitudinal direction of the injection path in the injection path, and the scraper A liquid injection device provided with an insertion path for an operation tool that can be moved and operated from the outside of the tube, wherein the injection path communicates with the connection path, and the injection path is concentric with the insertion path. There is a switching means that can be selectively switched from the outside of the pipe to the second state communicating in a shape.

〔作用及び効果〕
注入路が接続路に連通する第1状態と、注入路が挿通路に同芯状に連通する第2状態とに管外側から択一的に切換操作自在な切換手段を設けてあるので、注入路の開閉機能を損なうことなく、注入路の先端側を切除して、注入路の長さを、その先端が流体輸送用管の内径に応じた適切な深さで流体輸送用管内に入り込むように調節できる。
[Action and effect]
Since there is provided switching means that can be selectively switched from the outside of the tube between the first state where the injection path communicates with the connection path and the second state where the injection path communicates concentrically with the insertion path. Without impairing the opening and closing function of the channel, cut the tip side of the injection channel so that the length of the injection channel enters the fluid transport tube at an appropriate depth according to the inner diameter of the fluid transport tube. Can be adjusted.

本発明の第2特徴構成は、前記切換手段を構成するに、軸状弁体を管外側から軸方向に移動操作自在に嵌合する嵌合孔の内周面に、前記注入路と前記接続路と前記挿通路とを開口させるとともに、前記注入路と前記接続路とを連通可能な第1連通路と、前記注入路と前記挿通路とを同芯状に連通可能な第2連通路とを前記軸状弁体に形成して、前記軸状弁体の移動操作で、前記第1状態と前記第2状態とに切換操作自在に構成してある点にある。   According to a second characteristic configuration of the present invention, in order to configure the switching means, the injection path and the connection are formed on an inner peripheral surface of a fitting hole for fitting the axial valve body so as to be movable in the axial direction from the outside of the tube. A first communication path capable of communicating the injection path and the connection path, and a second communication path capable of communicating the injection path and the insertion path in a concentric manner. Is formed on the shaft-shaped valve body, and can be switched between the first state and the second state by a movement operation of the shaft-shaped valve body.

〔作用及び効果〕
軸状弁体を管外側から軸方向の一方に移動させる移動操作で、注入路と接続路とが第1連通路を介して連通する第1状態に切換操作することができ、また、軸状弁体を管外側から軸方向の他方に移動させる移動操作で、注入路と挿通路とが第2連通路を介して同芯状に連通する第2状態に切換操作することができるので、ボール弁などの弁体の回転操作で第1状態と第2状態とに切換操作する場合に比べて、軸状弁体を押し引きする単純な切換動作で狭い場所でも簡便に切換操作することができる。
[Action and effect]
The moving operation of moving the shaft-shaped valve body from the outside of the tube to one side in the axial direction can be switched to the first state in which the injection path and the connection path communicate with each other via the first communication path. Since the valve body can be moved from the outside of the tube to the other side in the axial direction, the injection path and the insertion path can be switched to the second state in which the injection path and the insertion path communicate in a concentric manner via the second communication path. Compared with the case of switching between the first state and the second state by rotating the valve body such as a valve, the switching operation can be easily performed even in a narrow place by a simple switching operation of pushing and pulling the shaft-like valve body. .

本発明の第3特徴構成は、前記軸状弁体を、前記第1状態に切り換えるに伴って前記第2連通路が前記嵌合孔の外方に露出し、前記第2状態に切り換えるに伴って前記第1連通路が前記嵌合孔の外方に露出するように設けてある点にある。   According to a third characteristic configuration of the present invention, as the shaft-shaped valve body is switched to the first state, the second communication path is exposed to the outside of the fitting hole, and is switched to the second state. The first communication path is provided so as to be exposed to the outside of the fitting hole.

〔作用及び効果〕
薬液を注入可能な第1状態に切り換えるに伴って、軸状弁体の第2連通路が嵌合孔の外方に露出し、注入路の周面に付着している付着物を掻き取り具で掻き取り可能な第2状態に切り換えるに伴って、軸状弁体の第1連通路が嵌合孔の外方に露出するので、弁体を弁箱から取り出すような作業を伴うことなく、薬液を注入しながらでも第2連通路に付着している付着物を除去することができるとともに、注入路の周面に付着している付着物を掻き取る時には、第1連通路に付着している付着物も除去することができ、第1連通路や第2連通路のメンテナンスを容易に実施することができる。
[Action and effect]
Along with switching to the first state in which the chemical liquid can be injected, the second communicating path of the shaft-shaped valve element is exposed to the outside of the fitting hole, and scrapes the adhering matter adhering to the peripheral surface of the injection path. As the first communication path of the shaft-shaped valve body is exposed to the outside of the fitting hole in accordance with the switching to the second state that can be scraped off, without the work of taking out the valve body from the valve box, While the chemical solution is being injected, the adhering material adhering to the second communication path can be removed, and when the adhering material adhering to the peripheral surface of the injection path is scraped off, it adheres to the first communication path. The attached deposits can be removed, and the maintenance of the first communication path and the second communication path can be easily performed.

本発明の第4特徴構成は、前記軸状弁体を、前記注入路と前記接続路と前記挿通路とをその外周面で塞ぎ、かつ、前記第1連通路と前記第2連通路との双方が前記嵌合孔の外方に露出する状態に切換可能に設けてある点にある。   According to a fourth characteristic configuration of the present invention, the shaft-like valve body is closed with the outer peripheral surface of the injection path, the connection path, and the insertion path, and the first communication path and the second communication path Both are provided so as to be switchable to a state of being exposed to the outside of the fitting hole.

〔作用及び効果〕
軸状弁体を、注入路と接続路と挿通路とをその外周面で塞ぎ、かつ、第1連通路と第2連通路との双方が嵌合孔の外方に露出する状態に切換可能に設けてあるので、薬液も管内流体も漏れ出さないように、注入路と接続路と挿通路とを軸状弁体の外周面で塞いだ状態で、第1連通路と第2連通路との双方を嵌合孔の外方に露出させて、第1連通路や第2連通路に付着している付着物を除去するなどのメンテナンス作業を、注入路に付着している付着物を掻き取り具で掻き取る作業に特に関連させること無く、簡便に実施することができる。
[Action and effect]
The axial valve body can be switched to a state in which the injection path, the connection path, and the insertion path are closed by the outer peripheral surface, and both the first communication path and the second communication path are exposed to the outside of the fitting hole. Since the injection path, the connection path, and the insertion path are closed with the outer peripheral surface of the shaft-shaped valve body so that neither the chemical solution nor the in-pipe fluid leaks out, the first communication path and the second communication path Both of these are exposed to the outside of the fitting hole, and maintenance work such as removing the deposits adhering to the first communication path and the second communication path is scraped off the deposits adhering to the injection path. It is possible to easily carry out without particularly relating to the work of scraping with the removing tool.

本発明の第5特徴構成は、前記切換手段を構成するに、回転操作式の弁体を管外側から回転操作自在に装着する弁体装着孔の内周面に、前記注入路と前記接続路と前記挿通路とを開口させるとともに、前記注入路と前記接続路とを連通可能な第1連通路と、前記注入路と前記挿通路とを同芯状に連通可能な第2連通路とを前記弁体に形成して、前記弁体の回転操作で、前記第1状態と前記第2状態とに切換操作自在に構成してある点にある。   According to a fifth characteristic configuration of the present invention, in order to constitute the switching means, the injection path and the connection path are formed on an inner peripheral surface of a valve body mounting hole in which a rotationally operated valve body is rotatably mounted from the outside of the tube. And a first communication path capable of communicating the injection path and the connection path, and a second communication path capable of communicating the injection path and the insertion path in a concentric manner. It is formed in the valve body, and is configured to be freely switchable between the first state and the second state by rotating the valve body.

〔作用及び効果〕
弁体の回転操作で、注入路と接続路とが第1連通路を介して連通する第1状態と、注入路と挿通路とが第2連通路を介して同芯状に連通する第2状態とに切換操作することができるので、軸方向に移動操作自在な軸状弁体で第1状態と第2状態とに切換操作自在に設ける場合に比べて、弁体をコンパクトに組み付けることができる。
[Action and effect]
A second state in which the injection path and the insertion path communicate with each other in a concentric manner through the second communication path, and the first state in which the injection path and the connection path communicate with each other through the first communication path by the rotation operation of the valve body. Therefore, the valve body can be assembled in a compact manner compared to the case where a shaft-like valve body that can be moved and moved in the axial direction can be switched between the first state and the second state. it can.

以下に本発明の実施の形態を図面に基づいて説明する。
〔第1実施形態〕
図1,図2は、本発明に係る薬液注入装置Aを示し、硬質塩化ビニル樹脂製のハウジング1に筒部2を一体形成して、その内側を断面円形の薬液の注入路3に構成し、筒部2の基部に設けた雄ネジ部4を、プールの水を濾過装置などに亘って循環させる循環パイプ(流体輸送用管の一例)Bの管壁にねじ込んで、注入路3を、その先端が循環パイプB内に管径方向から入り込むように、循環パイプBに接続可能に設けてある。
Embodiments of the present invention will be described below with reference to the drawings.
[First Embodiment]
1 and 2 show a chemical solution injection apparatus A according to the present invention, in which a cylindrical portion 2 is integrally formed in a housing 1 made of hard vinyl chloride resin, and the inside thereof is configured as a chemical solution injection path 3 having a circular cross section. Then, the male screw part 4 provided at the base part of the cylinder part 2 is screwed into the pipe wall of a circulation pipe (an example of a fluid transport pipe) B for circulating the water of the pool over a filtration device etc. It is provided so as to be connectable to the circulation pipe B so that the tip thereof enters the circulation pipe B from the radial direction.

図3,図4は、筒部2の先端側を切除して、注入路3の長さを、その先端が、循環パイプBの内径に応じて、管径方向の略中心位置で管内に連通する適切な深さで循環パイプB内に入り込むように調節して、ハウジング1を循環パイプBに接続固定してある薬液注入装置Aを示し、注入路3に連通接続した薬液の供給管5から供給した殺菌用の薬液を、その注入路3を通して循環パイプB内に注入して、循環パイプB内の水を殺菌或いは減菌できるように構成してある。   3 and 4, the distal end side of the cylindrical portion 2 is excised, and the length of the injection path 3 is communicated with the inside of the pipe at the substantially central position in the pipe radial direction according to the inner diameter of the circulation pipe B. The chemical solution injection apparatus A is shown in which the housing 1 is connected and fixed to the circulation pipe B by adjusting it so as to enter the circulation pipe B at an appropriate depth, and from the chemical solution supply pipe 5 connected in communication with the injection path 3 The supplied sterilizing chemical solution is injected into the circulation pipe B through the injection path 3 so that the water in the circulation pipe B can be sterilized or sterilized.

前記ハウジング1は、供給管5を注入路3に対して連通接続可能な接続路6と、掻き取り具7を管外側から往復移動操作自在な操作具8の挿通路9とを設けるとともに、注入路3内での注入路長手方向に沿う移動でその周面に付着している付着物を掻き取り自在な掻き取り具7を、挿通路9を通して注入路3内に挿抜自在に設け、供給管5を接続路6に対して着脱自在に接続する接続具10を着脱自在にねじ込み固定してある。   The housing 1 is provided with a connection path 6 capable of connecting the supply pipe 5 to the injection path 3 and an insertion path 9 of the operation tool 8 capable of reciprocating the scraper 7 from the outside of the pipe. A scraper 7 that can scrape off deposits adhering to the peripheral surface by movement along the longitudinal direction of the injection passage in the passage 3 is provided in the injection passage 3 through the insertion passage 9 so as to be removable. A connecting tool 10 for detachably connecting 5 to the connection path 6 is detachably screwed and fixed.

そして、注入路3と挿通路9とを同じ内径で同芯状に形成するとともに、接続路6を注入路3に対して直交する方向に形成して、図3に示すように、注入路3が接続路6に連通する第1状態と、図4に示すように、注入路3が挿通路9に同芯状に連通する第2状態とに管外側から択一的に切換操作自在な切換手段11を設けてある。   Then, the injection path 3 and the insertion path 9 are formed concentrically with the same inner diameter, and the connection path 6 is formed in a direction orthogonal to the injection path 3, as shown in FIG. As shown in FIG. 4, a switch that can be selectively switched from the outside of the pipe to a first state in which the injection path 3 communicates with the insertion path 9 concentrically as shown in FIG. 4. Means 11 are provided.

前記切換手段11は、四角柱状の軸状弁体12を管外側から軸方向に移動操作自在に嵌合する横断面が四角形の嵌合孔13をハウジング1に形成し、その嵌合孔13の径方向に沿わせて形成してある注入路3と接続路6と挿通路9とを嵌合孔13の内周面に開口させるとともに、注入路3と接続路6とを連通可能なL字状の第1連通路14と、注入路3と挿通路9とを同芯状に連通可能で、かつ、注入路3及び挿通路9と同径の直線状の第2連通路15とを軸状弁体12に貫通形成して、軸状弁体12のハウジング1に対する回転を阻止しながら、その軸方向への移動操作で、第1状態と第2状態とに切換操作自在に構成してある。   The switching means 11 forms a fitting hole 13 having a quadrangular cross section in the housing 1 for fitting the square columnar shaft-like valve body 12 so as to be movable in the axial direction from the outside of the tube. The injection path 3, the connection path 6, and the insertion path 9 formed along the radial direction are opened on the inner peripheral surface of the fitting hole 13, and the L-shape is capable of communicating the injection path 3 and the connection path 6. The first communication passage 14 having a shape, the injection passage 3 and the insertion passage 9 can be connected concentrically, and the linear second communication passage 15 having the same diameter as the injection passage 3 and the insertion passage 9 is provided as an axis. The shaft-shaped valve body 12 is formed so as to be able to switch between the first state and the second state by moving the shaft-shaped valve body 12 in the axial direction while preventing the shaft-shaped valve body 12 from rotating relative to the housing 1. is there.

前記軸状弁体12は、その両端にフランジ17a,17bを設けて、ゴム製シールリング16を挟んで嵌合孔13に対して抜け止め状態で嵌合してあり、図5に示すように、一端側のフランジ17aがハウジング1に接当する弁体移動範囲の一端側に軸方向に移動させることにより、注入路3と接続路6とが第1連通路14を介してL字状に連通する第1状態に切り換わり、図6に示すように、他端側のフランジ17bがハウジング1に接当する弁体移動範囲の他端側に軸方向に移動させることにより、注入路3と挿通路9とが第2連通路15を介して同芯状に連通する第2状態に切り換わるように構成してある。   The shaft-like valve body 12 is provided with flanges 17a and 17b at both ends thereof, and is fitted to the fitting hole 13 with the rubber seal ring 16 interposed therebetween, as shown in FIG. When the flange 17a on one end side is moved in the axial direction to one end side of the valve body moving range where the flange 17a contacts the housing 1, the injection path 3 and the connection path 6 are formed in an L shape via the first communication path 14. As shown in FIG. 6, the flange 17b on the other end side is moved in the axial direction to the other end side of the valve body moving range where the flange 17b contacts the housing 1, as shown in FIG. The insertion passage 9 is configured to switch to the second state in which the insertion passage 9 communicates concentrically with the second communication passage 15.

また、軸状弁体12は、図5に示すように、第1状態に切り換えるに伴って第2連通路15が嵌合孔13の外方、つまり、ハウジング1の外側に露出し、図6に示すように、第2状態に切り換えるに伴って第1連通路14が嵌合孔13の外方に露出し、また、図2に示すように、注入路3と接続路6と挿通路9とをその外周面で塞ぎ、かつ、第1連通路14と第2連通路15との双方が嵌合孔13の外方に露出する状態にも切換可能に設けてある。   Further, as shown in FIG. 5, the shaft-like valve body 12 is exposed to the outside of the fitting hole 13, that is, outside the housing 1 as the second communication passage 15 is switched to the first state. As shown in FIG. 2, the first communication path 14 is exposed to the outside of the fitting hole 13 in accordance with the switching to the second state, and as shown in FIG. 2, the injection path 3, the connection path 6, and the insertion path 9. And the first communication passage 14 and the second communication passage 15 are both switchable to be exposed to the outside of the fitting hole 13.

前記掻き取り具7は、握り部18を基部側に備えた注入路3の内径と略同径の円柱状のチタン合金製軸部材19の先端に軸方向に対して略直角の先端面を形成して、挿通路3を通して挿通した軸部材19を注入路3の周面に沿って往復摺接移動させることにより、軸部材19の外周面と先端面とが交叉する角部で周面に付着している付着物を掻き取ることができるように構成して、軸部材19を、掻き取り具7を注入路3の全長に亘って管外側から、つまり、ハウジング1の外側から往復移動操作自在な操作具8に構成してある。   The scraper 7 forms a distal end surface substantially perpendicular to the axial direction at the distal end of a cylindrical titanium alloy shaft member 19 having the same diameter as the inner diameter of the injection path 3 having a grip 18 on the base side. Then, the shaft member 19 inserted through the insertion passage 3 is reciprocally slidably moved along the peripheral surface of the injection path 3 to adhere to the peripheral surface at the corner where the outer peripheral surface and the tip surface of the shaft member 19 intersect. The shaft member 19 can be reciprocated from the outside of the pipe, that is, from the outside of the housing 1, over the entire length of the injection path 3. The operation tool 8 is configured.

また、挿通路9のハウジング外側に臨む端部を大径に形成してグランドパッキン20を装着するとともに、その押さえ具21をハウジング1に螺着固定し、軸部材19を挿入しないときには、プラグ22を押さえ具21に形成した雌ネジ部23にねじ込んで、挿通路9を通した薬液や循環パイプB内の水の漏れ出しを確実に阻止できるように構成してある。   Further, the end of the insertion passage 9 facing the outside of the housing is formed with a large diameter and the gland packing 20 is mounted. The presser 21 is screwed and fixed to the housing 1 and the plug member 22 is not inserted. Is screwed into a female screw portion 23 formed in the presser 21 so that leakage of the chemical solution and water in the circulation pipe B through the insertion passage 9 can be reliably prevented.

前記接続具10は、図3,図4に示すように、締め付けリング24で供給管5を着脱自在に締め付け固定できるようにしてあり、循環パイプB内の水の供給管5側への逆流を阻止する逆止弁25を設けて、注入路3と接続路6とが連通している第1状態に切り換えたままで供給管5を外しても、循環パイプB内の水が漏れ出さないように構成してある。   As shown in FIGS. 3 and 4, the connector 10 is configured so that the supply pipe 5 can be detachably fastened and fixed by a tightening ring 24, and the reverse flow of water in the circulation pipe B to the supply pipe 5 side is prevented. A check valve 25 is provided to prevent the water in the circulation pipe B from leaking even if the supply pipe 5 is removed while switching to the first state where the injection path 3 and the connection path 6 are in communication. It is configured.

従って、薬液を循環パイプB内に注入するときは、図3,図5に示すように、挿入路9をプラグ22で塞いで、軸状弁体12の軸方向の一方への移動操作で注入路3と接続路6とが連通している第1状態に切り換えておくことにより、薬液を循環パイプB内に注入することができるとともに、第2連通路15に付着している付着物を除去することもできる。   Therefore, when injecting the chemical into the circulation pipe B, as shown in FIGS. 3 and 5, the insertion path 9 is closed with the plug 22, and the injection is performed by moving the axial valve body 12 in one axial direction. By switching to the first state in which the path 3 and the connection path 6 communicate with each other, the chemical solution can be injected into the circulation pipe B and the adhering matter adhering to the second communication path 15 is removed. You can also

そして、注入路3の周面に付着した付着物を除去するときは、循環パイプB内の水が挿通路9を通して漏れ出さないように第1状態に切り換えたままプラグ22を外して、軸部材19を挿通路9の途中まで挿通してから、図4,図6に示すように、軸状弁体12の移動操作で注入路3と挿通路9とが連通している第2状態に切り換えて、軸部材19を注入路3内に押し込むことによって付着物を除去することができるとともに、第1連通路14に付着している付着物を除去することも、接続具10をハウジング1から外して、接続具10や接続路6を保守点検することもでき、更には、図2に示すように、注入路3と接続路6と挿通路9とをその外周面で塞ぎ、かつ、第1連通路14と第2連通路15との双方が嵌合孔13の外方に露出する状態に切り換えて、第1連通路14や第2連通路15に付着している付着物を除去するなどのメンテナンス作業を、注入路に付着している付着物を掻き取り具7で掻き取る作業に特に関連させること無く、実施することができる。   And when removing the deposit | attachment adhering to the surrounding surface of the injection path 3, the plug 22 is removed, switching to the 1st state so that the water in the circulation pipe B may not leak through the insertion path 9, and a shaft member is removed. 19 is inserted to the middle of the insertion passage 9 and then switched to the second state in which the injection passage 3 and the insertion passage 9 communicate with each other by the movement operation of the shaft-shaped valve body 12 as shown in FIGS. Thus, the attached material can be removed by pushing the shaft member 19 into the injection path 3, and the attached material 10 can also be removed by removing the connector 10 from the housing 1. Thus, the connector 10 and the connection path 6 can be maintained and inspected. Further, as shown in FIG. 2, the injection path 3, the connection path 6, and the insertion path 9 are closed by the outer peripheral surface, and the first Both the communication path 14 and the second communication path 15 are exposed outside the fitting hole 13. The maintenance work such as removing the adhering matter adhering to the first communication passage 14 and the second communicating passage 15 is switched to the state, and the adhering matter adhering to the injection passage is scraped with the scraper 7. It is possible to carry out without particularly relating to.

〔第2実施形態〕
図7,図8は、本発明に係る薬液注入装置Aの別実施形態を示し、注入路3を形成してある硬質塩化ビニル樹脂製の筒部2を硬質塩化ビニル樹脂製のハウジング1に着脱自在に螺着するとともに、接続路6と挿通路9及び軸状弁体12の嵌合孔13をそのハウジング1に貫通形成し、抜け止め用の円形のフランジ17a,17bを両端に設けてある軸状弁体12を嵌合孔13に軸方向に移動自在に嵌合して、軸状弁体12の軸方向への移動操作で、第1状態と第2状態とに切換操作自在な切換手段11を設けてある。
[Second Embodiment]
7 and 8 show another embodiment of the chemical solution injection device A according to the present invention, in which the cylindrical portion 2 made of hard vinyl chloride resin forming the injection path 3 is attached to and detached from the housing 1 made of hard vinyl chloride resin. The connection path 6 and the insertion path 9 and the fitting hole 13 of the shaft-like valve body 12 are formed through the housing 1 and circular flanges 17a and 17b for retaining are provided at both ends. The shaft-like valve body 12 is fitted to the fitting hole 13 so as to be movable in the axial direction, and the shaft-like valve body 12 can be switched between the first state and the second state by moving the shaft-like valve body 12 in the axial direction. Means 11 are provided.

前記軸状弁体12は、横断面形状が円弧状の一つの円弧状側面12aと、周方向で隣り合う面どうしが互いに直交する三つの扁平側面12bとを備えた横断面が略四角の軸状に形成してあり、互いに直交する二つの扁平側面12bに亘って貫通するL字状の第1連通路14と、互いに対向する方向の二つの扁平側面12bに亘って貫通する直線状の第2連通路15とを軸方向に間隔を隔てて形成してある。   The shaft-shaped valve body 12 has a substantially square shaft with a cross section having one arc-shaped side surface 12a having a circular cross-sectional shape and three flat side surfaces 12b in which circumferentially adjacent surfaces are orthogonal to each other. L-shaped first communication passage 14 that is formed in a shape and penetrates across two flat side surfaces 12b that are orthogonal to each other, and a linear first shape that penetrates across two flat side surfaces 12b in opposite directions. The two communicating passages 15 are formed at an interval in the axial direction.

前記接続路6と挿通路9とを嵌合孔13の内周面に開口させるとともに、筒部2を螺着する雌ねじ孔26を挿通路9と同芯状に対向するように嵌合孔13の内周面に開口させて、軸状弁体12を抜け止め状態で、かつ、回転を阻止する状態で嵌合してある。   The connection path 6 and the insertion path 9 are opened in the inner peripheral surface of the fitting hole 13, and the female screw hole 26 for screwing the cylindrical portion 2 is concentrically opposed to the insertion path 9. The shaft-like valve body 12 is fitted in a state in which the shaft-like valve body 12 is prevented from coming off and rotation is prevented.

そして、図9に示すように、一端側のフランジ17aがハウジング1に接当する弁体移動範囲の一端側に軸方向に移動させることにより、注入路3と接続路6とが第1連通路14を介してL字状に連通する第1状態に切り換わり、図10に示すように、他端側のフランジ17bがハウジング1に接当する弁体移動範囲の他端側に軸方向に移動させることにより、注入路3と挿通路9とが第2連通路15を介して同芯状に連通する第2状態に切り換わるように構成してある。   Then, as shown in FIG. 9, the injection path 3 and the connection path 6 are connected to the first communication path by moving the flange 17 a on the one end side in the axial direction to one end side of the valve body moving range in contact with the housing 1. 14 is switched to the first state communicating with the L-shape via 14, and as shown in FIG. 10, the flange 17 b on the other end side moves in the axial direction to the other end side of the valve body moving range in contact with the housing 1. By doing so, the injection path 3 and the insertion path 9 are configured to be switched to the second state in which the injection path 3 and the insertion path 9 communicate with each other via the second communication path 15.

また、軸状弁体12は、図9に示すように、第1状態に切り換えるに伴って第2連通路15がハウジング1の外側に露出し、図10に示すように、第2状態に切り換えるに伴って第1連通路14がハウジング1の外方に露出し、また、図8に示すように、注入路3と接続路6と挿通路9とをその外周面で塞ぎ、かつ、第1連通路14と第2連通路15との双方を嵌合孔13の内周面で塞ぐ状態にも切換可能に設けてある。   In addition, as shown in FIG. 9, the shaft-like valve body 12 is exposed to the outside of the housing 1 as the second communication path 15 is exposed to the first state, and is switched to the second state as shown in FIG. Accordingly, the first communication passage 14 is exposed to the outside of the housing 1, and the injection passage 3, the connection passage 6, and the insertion passage 9 are closed by the outer peripheral surface thereof as shown in FIG. The communication path 14 and the second communication path 15 are both switchable so as to be closed by the inner peripheral surface of the fitting hole 13.

また、掻き取り具7は、掻き取り部27と押し引き操作用の軸部材19とをチタン合金で同芯状に一体形成してあり、掻き取り部27を注入路3に摺動移動自在に嵌合可能な円柱状に形成するとともに、軸部材19を掻き取り部27よりも小径の円柱状に形成し、軸部材19の一端側に握り部18を螺着固定してある。   Further, the scraper 7 has a scraper 27 and a shaft member 19 for push-pull operation that are integrally formed of a titanium alloy in a concentric shape so that the scraper 27 can be slidably moved along the injection path 3. The shaft member 19 is formed in a cylindrical shape having a smaller diameter than the scraping portion 27, and the grip portion 18 is screwed and fixed to one end side of the shaft member 19.

そして、挿通路9に装着したグランドパッキン20の押さえ具21に、軸部材19をその軸芯方向に移動自在に、かつ、掻き取り部27との接当で抜け止めできるように嵌合し、その押さえ具21をハウジング1に着脱自在に螺着して、掻き取り具7が循環パイプB内の水圧でハウジング1から抜け出てしまうような事態を防止できるように、押さえ具21をハウジング1に螺着したままで、掻き取り具7を管外側から押し引き移動操作できるように設けてある。
その他の構成は第1実施形態と同様である。
Then, the shaft member 19 is fitted to the presser 21 of the gland packing 20 mounted in the insertion passage 9 so that the shaft member 19 can move in the axial direction and can be prevented from coming off by contact with the scraping portion 27, The presser 21 is detachably screwed to the housing 1 so that the scraper 7 can be prevented from coming out of the housing 1 due to the water pressure in the circulation pipe B. The scraper 7 is provided so that it can be pushed and pulled from the outside of the tube while being screwed.
Other configurations are the same as those of the first embodiment.

〔第3実施形態〕
図11は、本発明に係る薬液注入装置Aの別実施形態を示し、図12〜図15に示すように、注入路3を形成してある硬質塩化ビニル樹脂製の筒部2を着脱自在に螺合可能な注入路用雌ねじ孔28と、挿通路9を形成する硬質塩化ビニル樹脂製のプラグ29を着脱自在に螺合可能な挿通路用雌ねじ孔30と、接続路6とを硬質塩化ビニル樹脂製のハウジング1に形成するとともに、注入路用雌ねじ孔28と挿通路用雌ねじ孔30と接続路6とが内周面に開口する円筒状の弁体装着孔31をそのハウジング1に形成し、弁体装着孔31に同芯状に装着した回転操作式の円柱状弁体32の管外側からの回転操作で、第1状態と第2状態とに切換操作自在な切換手段11を設けてある。
[Third Embodiment]
FIG. 11 shows another embodiment of the chemical solution injection apparatus A according to the present invention. As shown in FIGS. 12 to 15, the cylindrical portion 2 made of hard vinyl chloride resin forming the injection path 3 is detachable. The injection path female screw hole 28 that can be screwed, the insertion path female screw hole 30 that can be detachably screwed into the hard vinyl chloride resin plug 29 that forms the insertion path 9, and the connection path 6 are connected to the hard vinyl chloride. A cylindrical valve body mounting hole 31 is formed in the housing 1 in which the injection passage female screw hole 28, the insertion passage female screw hole 30, and the connection passage 6 are opened in the inner peripheral surface. A switching means 11 is provided which can be switched between a first state and a second state by a rotation operation from the outside of a pipe of a rotary operation type cylindrical valve body 32 concentrically mounted in the valve body mounting hole 31. is there.

前記弁体32は、注入路3と接続路6とを連通可能な第1連通路14と、注入路3と挿通路9とを同芯状に連通可能で、かつ、注入路3及び挿通路9と同径の直線状の第2連通路15とを、第2連通路15の途中に第1連通路14が連通するT字形に径方向に貫通形成し、回転操作用の操作軸部材33を同芯状に設けてある。   The valve body 32 is capable of communicating the first communication path 14 capable of communicating the injection path 3 and the connection path 6 with the injection path 3 and the insertion path 9 concentrically, and the injection path 3 and the insertion path. 9 and a linear second communication passage 15 having the same diameter as the first communication passage 14 are formed in the middle of the second communication passage 15 in the radial direction so as to communicate with the first communication passage 14. Are provided concentrically.

前記ハウジング1に、弁体32を弁体装着孔31に出し入れ自在な開口部34を弁体装着孔31の一端側に同芯状に連通するように形成するとともに、弁体32の操作軸部材33を回転操作自在に嵌合する軸孔35を弁体装着孔31の他端側に同芯状に連通するように形成して、開口部34を通して、操作軸部材33が軸孔35に挿通するように弁体32を弁体装着孔31に嵌合した状態で、開口部34に螺着した押さえ具36で弁体32を抜け止めし、テフロンなどのフッ素樹脂製のシール用シート37を弁体32の軸方向両端面に挟み込んで、弁体32の回転抵抗を軽減できるようにしてある。   The housing 1 is formed with an opening 34 through which the valve body 32 can be inserted into and removed from the valve body mounting hole 31 so as to communicate with one end side of the valve body mounting hole 31 in a concentric manner. A shaft hole 35 for rotatably engaging the shaft 33 is formed so as to communicate with the other end of the valve body mounting hole 31 concentrically, and the operation shaft member 33 is inserted into the shaft hole 35 through the opening 34. In such a state that the valve body 32 is fitted in the valve body mounting hole 31, the valve body 32 is prevented from coming off by a pressing tool 36 screwed into the opening 34, and a sealing sheet 37 made of fluororesin such as Teflon is attached. The rotational resistance of the valve body 32 can be reduced by being sandwiched between both axial end faces of the valve body 32.

尚、注入路用雌ねじ孔28と挿通路用雌ねじ孔30と接続路6の各々には、テフロンなどのフッ素樹脂製のシール用Oリング38を弁体32の周面に接触するように押さえ付けるため筒状ねじ部材39を螺合してある。   A sealing O-ring 38 made of fluororesin such as Teflon is pressed against each of the injection passage female screw hole 28, the insertion passage female screw hole 30 and the connection passage 6 so as to be in contact with the peripheral surface of the valve element 32. Therefore, the cylindrical screw member 39 is screwed.

また、掻き取り具7は、第2実施形態と同様に構成してあり、その軸部材19にプラグ29を軸方向に移動自在に嵌合して、挿通路用雌ねじ孔30にねじ込み固定してある。   The scraper 7 is configured in the same manner as in the second embodiment, and a plug 29 is fitted to the shaft member 19 so as to be movable in the axial direction, and is screwed into the insertion passage female screw hole 30 and fixed. is there.

そして、図11に示すように、操作軸部材33に係合した操作レバー40で弁体32を回転操作自在に設けるとともに、第1状態に対応する「注入」位置と、第2状態に対応する「洗浄」位置と、注入路3と接続路6との連通を阻止し、かつ、注入路3と挿通路9との連通も阻止する第3状態に対応する「締切」位置とを、操作レバー40の操作経路に沿うハウジング1外面に表示して、操作レバー40を「注入」位置に回動させると、図13に示す第1状態に切り換わり、「洗浄」位置に回動させると、図14に示す第2状態に切り換わり、「締切」位置に回動させると、図15に示す第3状態に切り換わるように設けてある。
その他の構成は第1実施形態と同様である。
Then, as shown in FIG. 11, the valve body 32 is rotatably provided by the operation lever 40 engaged with the operation shaft member 33, and corresponds to the “injection” position corresponding to the first state and the second state. The “cleaning” position and the “deadline” position corresponding to the third state in which the communication between the injection path 3 and the connection path 6 is blocked and the communication between the injection path 3 and the insertion path 9 is also blocked. When the operation lever 40 is rotated to the “injection” position on the outer surface of the housing 1 along the operation path 40, the first state shown in FIG. 13 is switched to the “cleaning” position. When the second state shown in FIG. 14 is switched to the “deadline” position, the third state shown in FIG. 15 is switched.
Other configurations are the same as those of the first embodiment.

〔その他の実施形態〕
1.本発明による薬液注入装置は、注入路が接続路に連通する第1状態と、注入路が挿通路に同芯状に連通する第2状態とに管外側から択一的に切換操作自在な切換手段として、第1状態と第2状態とに管外側から択一的に切換操作自在なボール弁を設けてあっても良い。
2.本発明による薬液注入装置は、軸状弁体に形成する第1連通路を周溝で構成しても良い。
3.本発明による薬液注入装置は、掻き取り具を挿通路に常時装着しておいて、必要に応じて挿通路に挿入した操作具で掻き取り具を移動操作して、付着物を掻き取れるように構成しても良い。
4.本発明による薬液注入装置は、掻き取り具とその操作具を挿通路に常時挿入しておいて、必要に応じてその操作具を操作して付着物を掻き取れるように構成しても良い。
5.本発明による薬液注入装置は、湾曲するように形成した挿通路と注入路とが同芯状に連通する第2状態に切換操作自在な切換手段を設けて、弾性的に撓み変形自在なコイル状の金属製操作具などを使用して、掻き取り具を移動操作自在に設けてあっても良い。
6.本発明による薬液注入装置は、切換手段を第1状態又は第2状態に解除自在に固定可能な固定手段を設けてあっても良い。
7.本発明による薬液注入装置は、注入路の周面に付着した藻や貝類等の付着物を掻き取り具で掻き取るように構成したものであっても良い。
[Other Embodiments]
1. The chemical solution injection device according to the present invention is a switch that can be selectively switched from the outside of the tube between a first state where the injection path communicates with the connection path and a second state where the injection path communicates concentrically with the insertion path. As a means, there may be provided a ball valve which can be selectively switched between the first state and the second state from the outside of the tube.
2. In the chemical liquid injector according to the present invention, the first communication path formed in the shaft-shaped valve body may be constituted by a circumferential groove.
3. In the chemical injection device according to the present invention, the scraper is always attached to the insertion passage, and the scraper is moved by the operation tool inserted into the insertion passage as necessary to scrape off the deposits. It may be configured.
4). The chemical injection device according to the present invention may be configured such that the scraping tool and its operation tool are always inserted into the insertion passage, and the operation tool is operated as needed to scrape off the deposits.
5). The chemical injection device according to the present invention is provided with a switching means that can be switched to a second state in which the insertion passage and the injection passage formed to be curved communicate with each other in a concentric manner, and are elastically bent and deformable in a coil shape. The scraper may be provided so as to be movable by using a metal operating tool.
6). The chemical injection device according to the present invention may be provided with a fixing means capable of releasably fixing the switching means to the first state or the second state.
7). The chemical injection device according to the present invention may be configured to scrape off deposits such as algae and shellfish attached to the peripheral surface of the injection path with a scraping tool.

薬液注入装置の斜視図Perspective view of chemical injection device 薬液注入装置の断面図Cross section of chemical injection device 薬液注入装置の流体輸送用管への取り付け状態を示す断面図Sectional drawing which shows the attachment state to the pipe for fluid transportation of a chemical injection device 薬液注入装置の流体輸送用管への取り付け状態を示す断面図Sectional drawing which shows the attachment state to the pipe for fluid transportation of a chemical injection device 薬液注入装置の流体輸送用管への取り付け状態を示す平面図The top view which shows the attachment state to the pipe for fluid transportation of a chemical injection device 薬液注入装置の流体輸送用管への取り付け状態を示す平面図The top view which shows the attachment state to the pipe for fluid transportation of a chemical injection device 第2実施形態の薬液注入装置を示す斜視図The perspective view which shows the chemical | medical solution injection device of 2nd Embodiment. 第2実施形態の薬液注入装置を示す断面図Sectional drawing which shows the chemical injection device of 2nd Embodiment 薬液注入装置の流体輸送用管への取り付け状態を示す断面図Sectional drawing which shows the attachment state to the pipe for fluid transportation of a chemical injection device 薬液注入装置の流体輸送用管への取り付け状態を示す断面図Sectional drawing which shows the attachment state to the pipe for fluid transportation of a chemical injection device 第3実施形態の薬液注入装置を示す斜視図The perspective view which shows the chemical | medical solution injection device of 3rd Embodiment. 第3実施形態の薬液注入装置を示す要部断面図Sectional drawing of the principal part which shows the chemical injection device of 3rd Embodiment. 第3実施形態の薬液注入装置を示す要部断面図Sectional drawing of the principal part which shows the chemical injection device of 3rd Embodiment. 第3実施形態の薬液注入装置を示す要部断面図Sectional drawing of the principal part which shows the chemical injection device of 3rd Embodiment. 第3実施形態の薬液注入装置を示す要部断面図Sectional drawing of the principal part which shows the chemical injection device of 3rd Embodiment.

符号の説明Explanation of symbols

3 注入路
5 供給管
6 接続路
7 掻き取り具
8 操作具
9 挿通路
11 切換手段
12 軸状弁体
13 嵌合孔
14 第1連通路
15 第2連通路
31 弁体装着孔
32 回転操作式の弁体
B 流体輸送用管
DESCRIPTION OF SYMBOLS 3 Injection path 5 Supply pipe 6 Connection path 7 Scraping tool 8 Operation tool 9 Insertion path 11 Switching means 12 Shaft-shaped valve body 13 Fitting hole 14 1st communication path 15 2nd communication path 31 Valve body mounting hole 32 Rotary operation type Valve body B Fluid transport pipe

Claims (5)

薬液の注入路を、その先端が管径方向から流体輸送用管内に入り込むように、その流体輸送用管に接続可能に設けるとともに、
薬液の供給管を前記注入路に対して連通接続可能な接続路と、前記注入路内での注入路長手方向に沿う移動でその周面に付着している付着物を掻き取り自在な掻き取り具と、前記掻き取り具を管外側から移動操作自在な操作具の挿通路とを設けてある薬液注入装置であって、
前記注入路が前記接続路に連通する第1状態と、前記注入路が前記挿通路に同芯状に連通する第2状態とに管外側から択一的に切換操作自在な切換手段を設けてある薬液注入装置。
A chemical solution injection path is provided so as to be connectable to the fluid transport pipe so that the tip thereof enters the fluid transport pipe from the pipe diameter direction.
A connecting path that allows the chemical supply pipe to communicate with the injection path, and a scraper that can freely scrape off deposits adhering to the peripheral surface by moving along the longitudinal direction of the injection path in the injection path A chemical injection device provided with a tool and an insertion path of an operation tool that can be operated to move the scraping tool from the outside of the tube,
Provided is a switching means that can be selectively switched from the outside of the tube between a first state where the injection path communicates with the connection path and a second state where the injection path communicates concentrically with the insertion path. A chemical injection device.
前記切換手段を構成するに、
軸状弁体を管外側から軸方向に移動操作自在に嵌合する嵌合孔の内周面に、前記注入路と前記接続路と前記挿通路とを開口させるとともに、前記注入路と前記接続路とを連通可能な第1連通路と、前記注入路と前記挿通路とを同芯状に連通可能な第2連通路とを前記軸状弁体に形成して、
前記軸状弁体の移動操作で、前記第1状態と前記第2状態とに切換操作自在に構成してある請求項1記載の薬液注入装置。
In configuring the switching means,
The injection path, the connection path, and the insertion path are opened on the inner peripheral surface of a fitting hole that allows the shaft-like valve body to be moved and operated in the axial direction from the outside of the pipe, and the injection path and the connection Forming a first communication passage capable of communicating with the passage, and a second communication passage capable of communicating the injection passage and the insertion passage concentrically with each other in the shaft-shaped valve body,
The chemical injection device according to claim 1, wherein the liquid injector is configured to be freely switched between the first state and the second state by a movement operation of the shaft-shaped valve body.
前記軸状弁体を、前記第1状態に切り換えるに伴って前記第2連通路が前記嵌合孔の外方に露出し、前記第2状態に切り換えるに伴って前記第1連通路が前記嵌合孔の外方に露出するように設けてある請求項2記載の薬液注入装置。   As the shaft-shaped valve body is switched to the first state, the second communication path is exposed to the outside of the fitting hole, and as the shaft-shaped valve body is switched to the second state, the first communication path is fitted. The chemical injection device according to claim 2, wherein the chemical injection device is provided so as to be exposed to the outside of the joint hole. 前記軸状弁体を、前記注入路と前記接続路と前記挿通路とをその外周面で塞ぎ、かつ、前記第1連通路と前記第2連通路との双方が前記嵌合孔の外方に露出する状態に切換可能に設けてある請求項2又は3記載の薬液注入装置。   The shaft-like valve body is closed with the outer peripheral surface of the injection path, the connection path, and the insertion path, and both the first communication path and the second communication path are located outward of the fitting hole. 4. The chemical solution injection device according to claim 2, wherein the chemical solution injection device is provided so as to be switchable to a state exposed to the water. 前記切換手段を構成するに、
回転操作式の弁体を管外側から回転操作自在に装着する弁体装着孔の内周面に、前記注入路と前記接続路と前記挿通路とを開口させるとともに、前記注入路と前記接続路とを連通可能な第1連通路と、前記注入路と前記挿通路とを同芯状に連通可能な第2連通路とを前記弁体に形成して、
前記弁体の回転操作で、前記第1状態と前記第2状態とに切換操作自在に構成してある請求項1記載の薬液注入装置。
In configuring the switching means,
The injection path, the connection path, and the insertion path are opened on an inner peripheral surface of a valve body mounting hole for rotatably mounting a rotationally operated valve body from the outside of the pipe, and the injection path and the connection path And forming a first communication path capable of communicating with the valve body and a second communication path capable of communicating the injection path and the insertion path concentrically with each other,
2. The chemical injection device according to claim 1, wherein the liquid injector is configured to be freely switchable between the first state and the second state by rotating the valve body.
JP2004048047A 2004-02-24 2004-02-24 Chemical liquid injector Pending JP2005238020A (en)

Priority Applications (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007020958A1 (en) 2005-08-18 2007-02-22 Matsushita Electric Industrial Co., Ltd. Wireless communication terminal apparatus and cqi selecting method
JP2007247959A (en) * 2006-03-15 2007-09-27 Mitsubishi Rayon Co Ltd Acid-resistant joint for fixed seal
JP2009039645A (en) * 2007-08-08 2009-02-26 Touzai Kagaku Sangyo Kk Chemical liquid injection apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007020958A1 (en) 2005-08-18 2007-02-22 Matsushita Electric Industrial Co., Ltd. Wireless communication terminal apparatus and cqi selecting method
JP2007247959A (en) * 2006-03-15 2007-09-27 Mitsubishi Rayon Co Ltd Acid-resistant joint for fixed seal
JP2009039645A (en) * 2007-08-08 2009-02-26 Touzai Kagaku Sangyo Kk Chemical liquid injection apparatus
JP4649450B2 (en) * 2007-08-08 2011-03-09 東西化学産業株式会社 Chemical injection device

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