JP2005329987A - Nozzle structure of inert gas replacing device - Google Patents

Nozzle structure of inert gas replacing device Download PDF

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JP2005329987A
JP2005329987A JP2004150791A JP2004150791A JP2005329987A JP 2005329987 A JP2005329987 A JP 2005329987A JP 2004150791 A JP2004150791 A JP 2004150791A JP 2004150791 A JP2004150791 A JP 2004150791A JP 2005329987 A JP2005329987 A JP 2005329987A
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nozzle
inert gas
chamber
nozzle chamber
nozzle plate
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JP4525901B2 (en
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Yoshiyuki Morita
佳之 森田
Katsumi Senbon
克己 千本
Mitsuo Tanioka
光雄 谷岡
Shigeru Tomikura
繁 富倉
Fumiaki Watabe
史章 渡部
Nagafumi Suzuki
修文 鈴木
Takeshi Ebara
健 江原
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Toyo Seikan Group Holdings Ltd
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Toyo Seikan Kaisha Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an inert gas replacing device which has an inert gas blowout face that can be easily removed for cleaning when the blowout face gets dirty or the mesh thereof clogs and prevents a soiled material from entering a nozzle chamber as well to simplify sanitation work for the device and improve the operating rate of a line. <P>SOLUTION: According to the inert gas replacing device, a nozzle structure 1 having the box-like nozzle chamber 2 is arranged along a container transfer line. The nozzle chamber 2 has the inert gas blowout face that is covered with a nozzle plate 4 having a number of inert gas blowout holes. The nozzle plate 4 is fitted slidably into the opening end of the body of the nozzle chamber 2 in a detachable manner. The nozzle plate 4, therefore, can be removed easily from the nozzle chamber 2 to be cleaned when the contents are scattered onto the nozzle plate 4 to soil it. The nozzle plate 4 attached to the chamber 2 prevents the scattered contents from entering the chamber 2, thus keeping the chamber 2 clean. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、飲料缶等の充填密封ラインおける不活性ガス置換装置のノズル構造体に関する。   The present invention relates to a nozzle structure of an inert gas replacement device in a filling and sealing line such as a beverage can.

飲料缶等の充填密封ラインおいて、内容物が充填された容器のヘッドスペースのガスを不活性ガスに置換するガス置換装置は、内容物が充填された容器を搬送する部分を缶胴高さの中間部から上方を半密閉型のトンネルで覆い、トンネル内に不活性ガスを吹き込む不活性ガス置換ノズルを配置している。ガス置換ノズル構造体は、概ね箱状のノズルチャンバーを有し、その内部に不活性ガスを供給してノズルチャンバーの不活性ガス吹出し面から不活性ガスを吹出す構造である（例えば特許文献１、２参照）。その場合、不活性ガスを吹出すノズルチャンバーの容器に面する面を解放型に構成し、不活性ガス吹出し管から直接不活性ガスを容器開口部に吹出すようにしたものと、容器に面する側を多数の吹出し孔を有するノズルプレートで覆って、該ノズルプレートを介して不活性ガスを吹出す構造のものがあるが、ガス置換ノズル構造体は何れも一体構造である。   A gas displacement device that replaces the gas in the head space of a container filled with contents with an inert gas in a filling and sealing line for beverage cans, etc. An inert gas replacement nozzle that covers the upper part from the middle part of the above with a semi-sealed tunnel and blows an inert gas into the tunnel is arranged. The gas replacement nozzle structure has a generally box-shaped nozzle chamber, and supplies an inert gas therein to blow out the inert gas from the inert gas blowing surface of the nozzle chamber (for example, Patent Document 1). 2). In that case, the surface facing the container of the nozzle chamber that blows out the inert gas is configured as an open type, and the inert gas is blown out directly from the inert gas blowing pipe to the container opening, and the surface facing the container. There is a structure in which the side to be covered is covered with a nozzle plate having a large number of blowing holes, and an inert gas is blown out through the nozzle plate. However, the gas replacement nozzle structure has an integral structure.

ガス置換ノズル構造体は、容器が通過する上方に配置して搬送される容器の開口部に向けて上方より不活性ガスを吹き込むようにしたダウンフロー形式のものと、搬送路の両側又は片側に沿って配置し、不活性ガスを搬送中の容器開口部付近に側方より吹き込むようにしたサイドフロー形式、及びその両方を備えた複合形式のものがあるが、いずれの形式においても置換効率を向上させるために、容器の開口部に近い場所に配置することが多い。そのため、容器から飛散する内容物が開放型のノズル構造体の場合は直接ノズルチャンバー内に侵入し、不活性ガス吹出し管やノズルチャンバー内壁に付着し堆積する。また、開口部にノズルプレートを配置したノズル構造体の場合は、容器から飛散する内容物などがノズルプレート表面に付着したり、不活性ガス吹出し孔が目詰まりを起したりする。そして、何れの形式の場合も、付着物が落下したり、不活性ガスに吹き飛ばされて容器内の内容物に混入したりするおそれがあるので、定期的に洗浄しなければならない。
特開２００２−４６７０９号公報 特開２００１−５８６０９号公報 The gas replacement nozzle structure is composed of a down flow type in which an inert gas is blown from above toward an opening of a container which is arranged and conveyed above the container, and on both sides or one side of the conveyance path. There is a side flow type in which the inert gas is blown from the side in the vicinity of the opening of the container being transported, and a composite type with both. In order to improve, it is often placed near the opening of the container. For this reason, in the case of an open nozzle structure, the content scattered from the container directly enters the nozzle chamber and adheres to and accumulates on the inert gas blowing pipe and the inner wall of the nozzle chamber. Further, in the case of a nozzle structure in which a nozzle plate is arranged in the opening, the contents scattered from the container adhere to the surface of the nozzle plate, or the inert gas blowout holes are clogged. In either case, the deposits may fall or be blown off by an inert gas and mixed into the contents in the container, and must be cleaned periodically.
JP 2002-46709 A JP 2001-58609 A

しかしながら、従来のノズル構造体は一体の箱型構造であるため、ノズル構造体の洗浄の都度、ラインを停止しノズル構造体全体を取外して洗浄しなければならず、ノズル構造体全体の取外し・洗浄・組立取付が面倒で人手と長時間を要し、その分ライン稼動率を低下させるという問題点があった。   However, since the conventional nozzle structure is an integral box structure, each time the nozzle structure is cleaned, the line must be stopped, the entire nozzle structure must be removed and cleaned, and the entire nozzle structure can be removed. Cleaning and assembling and mounting are troublesome and require a lot of manpower and a long time, resulting in a problem that the line operation rate is lowered accordingly.

そこで、本発明は、不活性ガス吹出し面が汚れたり目詰まりを起した場合、簡単に取り外して洗浄ができ、且つノズルチャンバー内への汚れの侵入を防止することができ、装置のサニテーションを簡略化できラインの稼動率を高めることができる不活性ガス置換装置のノズル構造体を提供することを目的とする。   Therefore, the present invention can be easily removed and cleaned when the inert gas blowing surface becomes dirty or clogged, and can prevent contamination from entering the nozzle chamber. It is an object of the present invention to provide a nozzle structure for an inert gas replacement device that can be simplified and increase the operating rate of the line.

上記課題を解決する本発明の不活性ガス置換装置のノズル構造体は、内容物が充填されて密封装置に搬送される容器のヘッドスペースのガスを不活性ガスに置換する不活性ガス置換装置のノズル構造体であって、容器搬送ラインに沿って箱状のノズルチャンバーを配置し、該ノズルチャンバーの不活性ガス噴出し面を多数の不活性ガス吹出し穴を有するノズルプレートで覆い、該ノズルプレートがノズルチャンバー本体に着脱可能に設けられていることを特徴とするものである。   The nozzle structure of an inert gas replacement device of the present invention that solves the above-described problems is an inert gas replacement device that replaces the gas in the head space of a container that is filled with contents and transported to a sealing device with an inert gas. A nozzle structure in which a box-shaped nozzle chamber is disposed along a container transfer line, and an inert gas ejection surface of the nozzle chamber is covered with a nozzle plate having a number of inert gas blowing holes, and the nozzle plate Is detachably provided on the nozzle chamber body.

前記ノズルプレートをノズルチャンバーに着脱自在に取付ける手段は、特に限定されるものではないが、箸箱式にノズルチャンバー本体の開口端部に形成された蟻溝に摺動自在に嵌合することによって、簡単に着脱ができ、且つ突起物等もないのでノズルチャンバーを容易に洗浄することができる。また、ノズルチャンバー内に、容器搬送方向に沿って延び、外周壁が多孔質材料で形成された散気管を配置し、該散気管を介してノズルチャンバー内に不活性ガスを供給することによって、ノズルプレートから均一に不活性ガスを吹出すことができる。さらに、前記ノズルプレートは、不活性ガス吹出し穴を丸穴又は長穴とし、ノズルプレートのガス吹出し面面積に対する開口率が１５〜４５％となるように均一に形成することが望ましい。   The means for detachably attaching the nozzle plate to the nozzle chamber is not particularly limited, but by slidably fitting into a dovetail groove formed at the opening end of the nozzle chamber body in a chopstick box type, The nozzle chamber can be easily cleaned because it can be easily attached and detached and has no projections. Further, by disposing an air diffuser tube extending in the container transport direction and having an outer peripheral wall formed of a porous material in the nozzle chamber, and supplying an inert gas into the nozzle chamber through the air diffuser tube, Inert gas can be blown out uniformly from the nozzle plate. Further, the nozzle plate is preferably formed so that the inert gas blowing hole is a round hole or a long hole, and the opening ratio with respect to the gas blowing surface area of the nozzle plate is 15 to 45%.

本発明の不活性ガス置換装置のノズル構造体によれば、ノズルチャンバーを箱型形状とし、その不活性ガス噴出し面を多数の不活性ガス吹出し穴を有するノズルプレートで覆い、該ノズルプレートをノズルチャンバー本体に着脱可能に設けたので、汚染した不活性ガス吹出し面を容易に取り外して洗浄し且つ取り付けできるので、サニテーションを簡略化できライン稼動率を向上させることができる。また、請求項２の構成によれば、より簡単に着脱ができ、且つ突起物等もないのでノズルプレートを容易に洗浄することができる。また、請求項３の構成によれば、散気管を介してノズルチャンバー内に不活性ガスが均一に吹出し、ノズルプレートから均一に不活性ガスを吹出すことができ、ガス置換率を向上させることができる。そして、請求項４の構成によれば、さらノズルプレートのガス吹出し面面積に対する開口率が１５〜４５％とすることによって、不活性ガスを効果的に容器開口部に向けて吹出すことができると共に、飛散した内容物がノズルチャンバー内に入り込むことを効果的に防止することができる。   According to the nozzle structure of the inert gas replacement device of the present invention, the nozzle chamber has a box shape, the inert gas ejection surface is covered with a nozzle plate having a number of inert gas blowing holes, and the nozzle plate is Since the nozzle chamber body is detachably provided, the contaminated inert gas blowing surface can be easily removed, cleaned and attached, so that sanitation can be simplified and the line operation rate can be improved. Further, according to the second aspect of the present invention, the nozzle plate can be easily cleaned because it can be attached and detached more easily and there are no projections. According to the configuration of claim 3, the inert gas can be uniformly blown into the nozzle chamber through the air diffuser, and the inert gas can be blown uniformly from the nozzle plate, thereby improving the gas replacement rate. Can do. And according to the structure of Claim 4, an inert gas can be efficiently blown toward a container opening part by the aperture ratio with respect to the gas blowing surface area of a nozzle plate being 15-45%. At the same time, the scattered contents can be effectively prevented from entering the nozzle chamber.

以下、本発明の実施形態を図面を基に詳細に説明する。
図１は本発明のノズル構造体の実施形態を示し、図２（Ａ）に示すようにノズルチャンバーを搬送路の側方に沿って両側又は片側に設ける場合である。
ノズル構造体１は、ノズルチャンバー２が断面矩形状の箱型に形成され、搬送路に面して不活性ガス吹出し面となる面を除き、他の５面は一体に固定されてノズルチャンバー本体３を形成している。そして、搬送路に面する側面を多孔板からなるノズルプレート４で形成し、該ノズルプレート４を上壁と下壁の端部の長手方向に形成した蟻溝に摺動可能且つ抜き取り自在に嵌合してある。したがって、ノズル構造体は、あたかも箸箱形状を呈し、ノズルプレートが箸箱の蓋に相当し、長手方向に摺動させることにより、簡単にノズルチャンバー本体３から着脱できる。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows an embodiment of a nozzle structure according to the present invention. As shown in FIG. 2A, the nozzle chamber is provided on both sides or one side along the side of the conveyance path.
In the nozzle structure 1, the nozzle chamber 2 is formed in a box shape having a rectangular cross section, and the other five surfaces are fixed integrally with the nozzle chamber body except for a surface that faces the conveyance path and becomes an inert gas blowing surface. 3 is formed. Then, the side surface facing the conveyance path is formed by a nozzle plate 4 made of a perforated plate, and the nozzle plate 4 is slidably fitted in a dovetail groove formed in the longitudinal direction of the end portions of the upper wall and the lower wall. Yes. Therefore, the nozzle structure has a chopstick box shape, the nozzle plate corresponds to the lid of the chopstick box, and can be easily detached from the nozzle chamber body 3 by sliding in the longitudinal direction.

したがって、ノズルプレート４に内容物等が付着して汚れたり、或いは目詰まりを起した場合は、簡単にノズルプレート４だけを取り外して洗浄又は取替えることができ、また洗浄後は簡単にノズルチャンバー本体３に嵌合することができ、従来の場合と比べて格段に短時間に行なうことができる。よって、ノズル構造体１の洗浄のためのライン停止時間を格段に短縮することができ、ライン稼働率を向上させることができる。   Therefore, when the contents or the like adhere to the nozzle plate 4 and become dirty or clogged, the nozzle plate 4 can be easily removed and cleaned or replaced. 3 and can be performed in a much shorter time than in the conventional case. Therefore, the line stop time for cleaning the nozzle structure 1 can be remarkably shortened, and the line operation rate can be improved.

ノズルプレート４の不活性ガス吹出し孔の形状は、特に限定されないが、ノズルプレートの不活性ガス吹出し面の面積に対して開口率１５〜４５％を有する丸孔か長穴（スリット）を不活性ガス吹出し面に均一に形成するのが望ましい。そして、丸孔の直径又はスリットの幅は、３ｍｍ以内が望ましい。丸孔の直径又はスリットの幅が３ｍｍよりも大きいと、容器から跳ねた内容物がチャンバー内に侵入するおそれがあるので、それ以下で且つあまり流動抵抗が大きくならない範囲を適宜選択する。そして、開口率１５〜４５％の範囲がノズルプレートからの不活性ガスの適正な吹出し圧力と吹出し量が得られ、且つチャンバーへの内容物の侵入も防げて望ましい。より望ましくは、開口率が２０〜２５％の範囲内である。開口率が１５％以下であると吹出し圧が高くなり、また４５％以上であると丸孔又は長穴（スリット）の開口面積が大きくなり、内容物がノズルチャンバー内に進入し易くなるので好ましくない。また、ノズルプレートの材質は、錆付かず且つ汚れが付着し難く洗浄しやすいステンレスが望ましいが、それに限らず、他の金属板やセラミックス板、プラスチック板等洗浄可能な任意の材料が適用可能である。本実施形態では、ノズルプレートをステンレス板に直径１ｍｍの丸穴を開口率２３％となるように、均一な分布で形成して使用した。   The shape of the inert gas blowing hole of the nozzle plate 4 is not particularly limited, but a round hole or a long hole (slit) having an opening ratio of 15 to 45% with respect to the area of the inert gas blowing surface of the nozzle plate is inert. It is desirable to form it uniformly on the gas blowing surface. The diameter of the round hole or the width of the slit is preferably within 3 mm. If the diameter of the round hole or the width of the slit is larger than 3 mm, the contents bounced from the container may enter the chamber. An opening ratio in the range of 15 to 45% is desirable because an appropriate blowing pressure and blowing amount of the inert gas from the nozzle plate can be obtained, and contents can be prevented from entering the chamber. More desirably, the aperture ratio is in the range of 20 to 25%. When the opening ratio is 15% or less, the blowing pressure increases, and when it is 45% or more, the opening area of a round hole or a long hole (slit) increases, and the contents easily enter the nozzle chamber. Absent. The material of the nozzle plate is preferably stainless steel that does not rust and does not easily get dirty and is easy to clean. is there. In this embodiment, the nozzle plate is used by forming a round hole having a diameter of 1 mm on a stainless steel plate with a uniform distribution so that the aperture ratio is 23%.

また本実施形態では、ノズルチャンバー２の内部に多孔質材料で形成された散気管６を配置し、該散気管の周面からノズルチャンバー２内に微細孔を介して不活性ガスを噴出させることによって、該ノズルチャンバーからトンネル内への不活性ガス吹出しの流速分布をほぼ均一にした。ノズルチャンバー内にこのような散気管を設けるノズル構造体は、本発明者らが先に提案したもの（特願２００３−５１１４４号）であり、特に上部への不活性ガス吹き込みによるガス置換後、容器密封までの搬送中に外部の空気を巻き込まないように、容器密封位置までを半密閉型のトンネルで覆って、ガス置換部でガス置換された缶を低酸素濃度雰囲気下で巻締位置まで搬送するのに有効である。なお、図中７は散気管６に不活性ガスを供給する不活性ガス供給管であり、不活性ガス供給源に連結されている。   Moreover, in this embodiment, the diffuser tube 6 made of a porous material is disposed inside the nozzle chamber 2, and an inert gas is ejected from the peripheral surface of the diffuser tube into the nozzle chamber 2 through the fine holes. As a result, the flow velocity distribution of the inert gas blowing from the nozzle chamber into the tunnel was made substantially uniform. The nozzle structure in which such a diffuser pipe is provided in the nozzle chamber is the one previously proposed by the present inventors (Japanese Patent Application No. 2003-511144), and particularly after gas replacement by blowing an inert gas into the upper part, Cover up to the container sealing position with a semi-enclosed tunnel so that external air is not caught during the transportation to the container sealing, and the can replaced by gas in the gas replacement section to the tightening position in a low oxygen concentration atmosphere It is effective to carry. In the figure, reference numeral 7 denotes an inert gas supply pipe for supplying an inert gas to the diffuser pipe 6 and is connected to an inert gas supply source.

図２は、以上のように構成されたノズル構造体を飲料缶の充填密封ラインの不活性ガス置換装置に適用した場合を示している。図２（Ａ）は容器搬送コンベヤ１０で搬送される内容物充填済みの缶体１１の搬送路の両側に、缶体のネック部近傍から上方に対向するように、図１に示すようにチャンバー内に散気管６を配置したノズル構造体１２、１２をノズルプレート１３が対向するように配置し、両ノズル構造体の上辺部を天井板１４で連結して半密閉型トンネル１５を構成している。図２（Ｂ）は、容器搬送コンベヤ１０で搬送される内容物充填済みの缶体１１の搬送路の上方に、少なくとも缶の開口部上方を覆う幅を有するノズル構造体１６を配置したダウンフロー形式であり、ノズルプレート１７を缶開口部と対向するように配置し，且つ缶搬送路の両側方を図示のように缶体のネック部近傍から上方に対向するように、側壁１８、１８を配置して半密閉型トンネル２０を構成している。   FIG. 2 shows a case where the nozzle structure configured as described above is applied to an inert gas replacement device in a filling and sealing line of a beverage can. FIG. 2A shows a chamber as shown in FIG. 1 on both sides of the conveyance path of the can 11 filled with contents conveyed by the container conveyer 10 so as to face upward from the vicinity of the neck of the can. Nozzle structures 12 and 12 having a diffuser pipe 6 disposed therein are arranged so that the nozzle plate 13 faces each other, and the upper sides of both nozzle structures are connected by a ceiling plate 14 to form a semi-sealed tunnel 15. Yes. FIG. 2B shows a downflow in which a nozzle structure 16 having a width covering at least the upper part of the opening of the can is disposed above the transport path of the can body 11 filled with contents to be transported by the container transport conveyor 10. The side walls 18 and 18 are arranged so that the nozzle plate 17 faces the can opening and the both sides of the can transport path face upward from the vicinity of the neck of the can body as shown in the figure. The semi-sealed tunnel 20 is configured by arranging.

それらのノズル構造体１２又は１６において、ノズルプレート１３、１７はノズルチャンバー本体に摺動自在に設けられているので、ノズルプレートが汚れた場合は、簡単に取り外して洗浄でき、洗浄のためのライン停止時間を特段に短縮することができ、稼動率を高めることができる。また、ノズルチャンバーの不活性ガス吹出し面をノズルプレートで覆っているのでノズルチャンバー内への汚れの侵入を防止することができる。   In these nozzle structures 12 or 16, the nozzle plates 13 and 17 are slidably provided on the nozzle chamber body, so that if the nozzle plate becomes dirty, it can be easily removed and cleaned. The downtime can be reduced particularly, and the operating rate can be increased. Moreover, since the inert gas blowing surface of the nozzle chamber is covered with the nozzle plate, it is possible to prevent dirt from entering the nozzle chamber.

以上、本発明に係るノズル構造体の好適な実施形態について説明したが、本発明は上記実施形態に限定されるものでなく、その技術的思想の範囲内で種々の設計変更が可能である。例えば、上記実施形態では、ノズルチャンバー内に散気管を配置した場合であるが、例えば図３に示すノズル構造体８に示すように、ノズルチャンバー内に散気管を設けず、不活性ガスボンベに連結した不活性ガス供給管２１の先端から、直接ノズルチャンバー内不活性ガスを噴出すようにしても良い。なお、図３において他の構造は、図１に示す実施形態と同様であるので、同じ構成要素は同一符号を付し、詳細な説明は省略する。また、ノズルプレートのノズルチャンバー本体への着脱可能な取付け手段は、上記実施形態の蟻溝構造のものに限らず、他の摺動案内手段によるもの、あるいは摺動せずに、ワンタッチで係止可能な着脱手段であってもよい。   The preferred embodiment of the nozzle structure according to the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and various design changes can be made within the scope of the technical idea. For example, in the above embodiment, the diffuser tube is arranged in the nozzle chamber. For example, as shown in the nozzle structure 8 shown in FIG. 3, the diffuser tube is not provided in the nozzle chamber and is connected to the inert gas cylinder. The inert gas in the nozzle chamber may be directly ejected from the tip of the inert gas supply pipe 21. In FIG. 3, the other structure is the same as that of the embodiment shown in FIG. 1, and thus the same components are denoted by the same reference numerals and detailed description thereof is omitted. In addition, the means for attaching and detaching the nozzle plate to the nozzle chamber main body is not limited to the dovetail structure of the above-described embodiment, but by other sliding guide means or one-touch locking without sliding. Possible attachment / detachment means may be used.

本発明の不活性ガス置換装置のノズル構造体は、種々の容器の充填・密封ラインにおけ不活性ガス置換装置に適用でき、従来一体構造であったノズルチャンバーに簡単に着脱可能なノズルプレートを設けたので、容器から飛散する内容物などがノズルプレートに付着した場合、簡単に取り外して洗浄できるほか、ノズルチャンバー内への汚れの進入を防止することができ、産業上の利用可能性が高い。   The nozzle structure of the inert gas replacement device of the present invention can be applied to the inert gas replacement device in the filling / sealing line of various containers, and a nozzle plate that can be easily attached to and detached from a nozzle chamber that has been conventionally integrated. Because it is provided, if the contents scattered from the container adhere to the nozzle plate, it can be easily removed and cleaned, and it can prevent the entry of dirt into the nozzle chamber, which is highly industrially applicable. .

本発明の実施形態に係る不活性ガス置換装置のノズル構造体の斜視図である。It is a perspective view of the nozzle structure of the inert gas substitution apparatus concerning the embodiment of the present invention. 飲料缶の充填密封ラインに適用した状態の正面図であり、（Ａ）はサイドフロー形式の半密閉型トンネルに適用した場合、（Ｂ）はダウンフロー形式に適用した場合を示している。It is a front view of the state applied to the filling sealing line of a beverage can, (A) shows the case where it applies to a semi-sealed tunnel of a side flow type, and (B) shows the case of applying to a down flow type. 本発明の他の実施形態に係る不活性ガス置換装置のノズル構造体の斜視図である。It is a perspective view of the nozzle structure of the inert gas replacement apparatus which concerns on other embodiment of this invention.

符号の説明Explanation of symbols

１、８、１２、１６ ノズル構造体
２ ノズルチャンバー
３ ノズルチャンバー本体
４、１３、１７ ノズルプレート
７、２１ 不活性ガス供給管
１０ 容器搬送コンベヤ
１４ 天井板
１５、２０ 半密閉型トンネル
１８ 側壁 1, 8, 12, 16 Nozzle structure 2 Nozzle chamber 3 Nozzle chamber body 4, 13, 17 Nozzle plate 7, 21 Inert gas supply pipe 10 Container transport conveyor 14 Ceiling plate 15, 20 Semi-closed tunnel 18 Side wall

Claims (4)

内容物が充填されて密封装置に搬送される容器のヘッドスペースのガスを不活性ガスに置換する不活性ガス置換装置のノズル構造体であって、容器搬送ラインに沿って箱状のノズルチャンバーを配置し、該ノズルチャンバーの不活性ガス噴出し面を多数の不活性ガス吹出し穴を有するノズルプレートで覆い、該ノズルプレートがノズルチャンバー本体に着脱可能に設けられていることを特徴とする不活性ガス置換装置のノズル構造体。   A nozzle structure of an inert gas replacement device that replaces the gas in the head space of a container that is filled with contents and is transported to a sealing device with an inert gas, and includes a box-shaped nozzle chamber along the container transport line. The inert gas ejection surface of the nozzle chamber is covered with a nozzle plate having a number of inert gas blowing holes, and the nozzle plate is detachably provided on the nozzle chamber body. Nozzle structure for gas displacement device. 前記ノズルプレートは、前記ノズルチャンバー本体の開口端部に形成された蟻溝に摺動自在に嵌合して、着脱自在になっている請求項１に記載の不活性ガス置換装置のノズル構造体。   2. The nozzle structure of an inert gas replacement device according to claim 1, wherein the nozzle plate is slidably fitted into a dovetail groove formed at an opening end of the nozzle chamber body so as to be detachable. 3. . 前記ノズルチャンバー内に、容器搬送方向に沿って延び、外周壁が多孔質材料で形成された散気管が配置され、該散気管を介してノズルチャンバー内に不活性ガスが供給される請求項１又は２に記載の不活性ガス置換装置のノズル構造体。   2. An air diffuser pipe extending along a container conveying direction and having an outer peripheral wall formed of a porous material is disposed in the nozzle chamber, and an inert gas is supplied into the nozzle chamber via the air diffuser pipe. Or the nozzle structure of the inert gas substitution apparatus of 2. 前記ノズルプレートは、不活性ガス吹出し穴が丸穴又は長穴からなり、開口率が１５〜４５％である請求項１〜３何れかに記載の不活性ガス置換装置のノズル構造体。   The nozzle structure of the inert gas replacement device according to any one of claims 1 to 3, wherein the nozzle plate has an inert gas blowing hole formed of a round hole or a long hole, and has an opening ratio of 15 to 45%.
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JP2007153406A (en) * 2005-12-06 2007-06-21 Toyo Seikan Kaisha Ltd Gas replacing and sealing device
JP2020172313A (en) * 2019-04-12 2020-10-22 昭和産業株式会社 Inert gas flow part, inert gas replacement device, inert gas replacement method and manufacturing method for container-filled liquid product

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JPH03212320A (en) * 1989-12-30 1991-09-17 Takeda Chem Ind Ltd Device to fill product in container
US5447016A (en) * 1992-10-01 1995-09-05 Shikoku Kakoki Co., Ltd. Packaging machine
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007153406A (en) * 2005-12-06 2007-06-21 Toyo Seikan Kaisha Ltd Gas replacing and sealing device
JP2020172313A (en) * 2019-04-12 2020-10-22 昭和産業株式会社 Inert gas flow part, inert gas replacement device, inert gas replacement method and manufacturing method for container-filled liquid product
JP7312003B2 (en) 2019-04-12 2023-07-20 昭和産業株式会社 Inert gas circulation part, inert gas replacement device, inert gas replacement method, and method for manufacturing container-filled liquid product

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