JP2013215684A - Dry ice washing machine - Google Patents

Dry ice washing machine Download PDF

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JP2013215684A
JP2013215684A JP2012089589A JP2012089589A JP2013215684A JP 2013215684 A JP2013215684 A JP 2013215684A JP 2012089589 A JP2012089589 A JP 2012089589A JP 2012089589 A JP2012089589 A JP 2012089589A JP 2013215684 A JP2013215684 A JP 2013215684A
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dry ice
mesh
members
cleaning nozzle
mesh member
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JP6032394B2 (en
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Shunji Yahata
俊治 八幡
Takahisa Tsukamoto
孝久 塚本
Mitsunori Yuda
満則 湯田
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Shibuya Corp
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Shibuya Machinery Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To jet dry ice ground into a necessary size, at a high speed.SOLUTION: A dry ice washing machine 1 includes a hopper 3 (supplying means) which supplies dry ice, a blower 4 (blowing means) which conveys the dry ice by blowing, flexible piping 5 in which the dry ice is circulated, and a washing nozzle 6 which jets the dry ice by being provided at the tip of this piping 5. The supplying means is made such that it supplies a pellet-like dry ice pellet and provides first and second net-like members 16, 17 along the conveying route of the dry ice formed in the piping 5 and the washing nozzle 6, and grinds the dry ice pellet by colliding with these net-like members in turn.

Description

本発明はドライアイス洗浄機に関し、詳しくはドライアイスを供給する供給手段と、送風によりドライアイスを搬送する送風手段と、ドライアイスを噴射する洗浄ノズルとを備えたドライアイス洗浄機に関する。   The present invention relates to a dry ice washer, and more particularly to a dry ice washer having a supply means for supplying dry ice, an air blowing means for conveying dry ice by air blowing, and a washing nozzle for injecting dry ice.

従来、ドライアイスを供給する供給手段と、送風によりドライアイスを搬送する送風手段と、上記ドライアイスが流通する可撓性を有した配管と、当該配管の先端に設けられてドライアイスを噴射する洗浄ノズルとを備えたドライアイス洗浄機が知られている（特許文献１、２）。
ここで、噴射されるドライアイスとしてペレット状のドライアイスペレットのほかに、ラジエータのフィンなどの衝撃に弱く変形しやすい部材を有する被洗浄物を洗浄する場合には、ドライアイスペレットの衝突によって破損しないよう、粉状のドライアイスを用いる場合がある。
しかしながら、ドライアイスペレットは比較的入手がしやすいのに対し、粉状のドライアイスは保管中に粒同士がくっついてしまったり、昇華したりしてしまうおそれがあるため、ドライアイスの粉砕を洗浄時にその都度行っている。
そこで特許文献１のドライアイス洗浄機は、ドライアイスペレットを粉砕する粉砕機を備え、粉砕したドライアイスを洗浄ノズルより噴射するようになっている。
一方特許文献２のドライアイス洗浄機は、ドライアイスペレットを洗浄ノズルまで搬送し、当該洗浄ノズルに設けたＹ字形の分岐管の分岐部分にドライアイスペレットを衝突させて粉砕するようになっている。 Conventionally, supply means for supplying dry ice, blower means for conveying dry ice by blowing, flexible piping through which the dry ice circulates, and spraying dry ice provided at the tip of the pipe A dry ice cleaning machine including a cleaning nozzle is known (Patent Documents 1 and 2).
Here, in addition to pellet-shaped dry ice pellets as sprayed dry ice, when cleaning objects to be cleaned that have weak members that are susceptible to deformation such as radiator fins, they are damaged by collision of dry ice pellets. In order to avoid this, powdery dry ice may be used.
However, while dry ice pellets are relatively easy to obtain, powdered dry ice can stick to each other and sublime during storage. Sometimes it goes every time.
Therefore, the dry ice cleaning machine of Patent Document 1 includes a pulverizer that pulverizes dry ice pellets, and sprays the pulverized dry ice from a cleaning nozzle.
On the other hand, the dry ice cleaning machine of Patent Document 2 conveys dry ice pellets to a cleaning nozzle, and pulverizes the dry ice pellets by colliding with a branch portion of a Y-shaped branch pipe provided in the cleaning nozzle. .

特開昭６１−１５７４９号公報JP-A-61-15749 特開２０１０−６４０２７号公報JP 2010-64027 A

しかしながら特許文献１のドライアイス洗浄機の場合、上記ドライアイスペレットを粉砕する粉砕機を設けなければならないことから、装置が大型化、複雑化するという問題があった。
また特許文献２のドライアイス洗浄機の場合、分岐部分にドライアイスを衝突させて粉砕するため、粉砕したドライアイスの大きさがそろわず、所要の粒度のドライアイスを得られないという問題があり、また上記分岐管で送風方向が変化して送気抵抗となることから、ドライアイスを高速で噴射できないという問題があった。
このような問題に鑑み、本発明は簡単な構成で所要の大きさに粉砕したドライアイスを高速に噴射することが可能なドライアイス洗浄機を提供するものである。 However, in the case of the dry ice cleaning machine disclosed in Patent Document 1, a pulverizer for pulverizing the dry ice pellets must be provided, which causes a problem that the apparatus becomes large and complicated.
Further, in the case of the dry ice washing machine of Patent Document 2, since the dry ice collides with the branch portion and pulverizes, there is a problem that the size of the pulverized dry ice is not uniform and dry ice having a required particle size cannot be obtained. In addition, there is a problem that dry ice cannot be injected at high speed because the air blowing direction is changed by the branch pipe and air supply resistance is generated.
In view of such a problem, the present invention provides a dry ice washing machine capable of jetting dry ice pulverized to a required size at high speed with a simple configuration.

すなわち請求項１の発明にかかるドライアイス洗浄機は、ドライアイスを供給する供給手段と、送風によりドライアイスを搬送する送風手段と、上記ドライアイスが流通する配管と、当該配管の先端に設けられてドライアイスを噴射する洗浄ノズルとを備えたドライアイス洗浄機において、
上記供給手段はペレット状のドライアイスペレットを供給し、
上記配管および上記洗浄ノズルに形成されたドライアイスの搬送経路に複数枚の網状部材を設けるとともに、この搬送経路の下流側に位置する網状部材の網目を、上流側に位置する網状部材の網目よりも細かくして、これら複数枚の網状部材に順次上記ドライアイスペレットを衝突させて粉砕することを特徴としている。 That is, a dry ice cleaning machine according to the invention of claim 1 is provided at a supply means for supplying dry ice, a blower means for conveying dry ice by blowing, a pipe through which the dry ice flows, and a tip of the pipe. In a dry ice washing machine equipped with a washing nozzle for jetting dry ice,
The supply means supplies pellet-shaped dry ice pellets,
A plurality of mesh members are provided in the dry ice conveyance path formed in the pipe and the cleaning nozzle, and the mesh of the mesh member located on the downstream side of the conveyance path is more than the mesh of the mesh member located on the upstream side. Further, the dry ice pellets are sequentially collided with the plurality of mesh members and pulverized.

上記発明によれば、配管および上記洗浄ノズルに形成された搬送経路に複数枚の網状部材を設け、これらの網状部材にドライアイスペレットを衝突させることで、粒体状のドライアイスへと粉砕することが可能となっている。
そして上記粉砕されて被洗浄物に噴射されるドライアイスの粒径は、上記網状部材の網目の大きさによって調整することが可能であり、さまざまな被洗浄物の洗浄を行うことが可能となっている。
さらに、下流側に位置する網状部材の網目を、上流側に位置する網状部材の網目よりも細かくすることで、下流側に位置する網状部材に到達するに従って徐々にドライアイスを細かく粉砕し、ドライアイスペレットが粉砕される際の送気抵抗を可及的に小さくして、ドライアイスを高速で噴射することができる。 According to the above invention, a plurality of mesh members are provided on the conveyance path formed in the pipe and the cleaning nozzle, and the dry ice pellets collide with these mesh members, thereby pulverizing into granular dry ice. It is possible.
The particle size of the dry ice that is crushed and sprayed onto the object to be cleaned can be adjusted according to the mesh size of the mesh member, and various objects to be cleaned can be cleaned. ing.
Further, by making the mesh of the mesh member located on the downstream side finer than the mesh of the mesh member located on the upstream side, the dry ice is gradually crushed finely as it reaches the mesh member located on the downstream side. Air resistance when the ice pellets are crushed can be made as small as possible, and dry ice can be sprayed at a high speed.

本実施例にかかるドライアイス洗浄機の構成図。The block diagram of the dry ice washing machine concerning a present Example. 洗浄ノズルの断面図Cross section of cleaning nozzle 洗浄ノズルを分解した状態の部分断面図Partial cross-sectional view with the cleaning nozzle disassembled 洗浄ノズルに設けた第１、第２網状部材の平面図Plan view of first and second mesh members provided on the cleaning nozzle 第２実施例にかかる洗浄ノズルの断面図Sectional drawing of the washing nozzle concerning 2nd Example

以下図示実施例について説明すると、図１はペレット状のドライアイスペレットを粉体状に粉砕した状態で被洗浄物に噴射するドライアイス洗浄機１の構成図を示している。
上記ドライアイス洗浄機１は、移動可能に設けられた本体部２と、当該本体部２に収容された供給手段としてのホッパ３と、本体部２に収容された送風手段としてのブロア４と、上記本体部２に接続された可撓性を有する配管５と、当該配管５の先端に設けられてドライアイスを噴射する洗浄ノズル６とを備えている。
上記ドライアイスペレットは、１粒が直径約３ｍｍ程度、長さ１０ｍｍ程度のペレット状の粒子となっており、これを粉砕した状態で高速に被洗浄物に衝突させることで、被洗浄物を水を用いずに洗浄することが可能となっている。
そして上記ドライアイス洗浄機１では、上記ドライアイスペレットのペレット状態を維持したまま上記配管５および洗浄ノズル６に形成された搬送経路を搬送するようになっており、後述するように上記洗浄ノズル６の内部で粉砕してから被洗浄物に噴射するようになっている。 The illustrated embodiment will be described below. FIG. 1 shows a configuration diagram of a dry ice cleaning machine 1 that injects pellet-shaped dry ice pellets into an object to be cleaned in a pulverized state.
The dry ice cleaning machine 1 includes a main body 2 that is movably provided, a hopper 3 serving as a supply means accommodated in the main body 2, and a blower 4 serving as a blowing means accommodated in the main body 2. A flexible pipe 5 connected to the main body 2 and a cleaning nozzle 6 provided at the tip of the pipe 5 for injecting dry ice are provided.
Each of the dry ice pellets is formed into pellet-like particles having a diameter of about 3 mm and a length of about 10 mm. It is possible to clean without using.
In the dry ice cleaning machine 1, the transport path formed in the pipe 5 and the cleaning nozzle 6 is transported while maintaining the pellet state of the dry ice pellet. After being crushed inside, it is sprayed onto the object to be cleaned.

上記本体部２には図示しない電源や操作パネル等が設けられており、その内部には上記ブロア４に接続された直線部７ａと、当該直線部７ａの途中から分岐して上記ホッパ３に接続された分岐部７ｂとからなる内部配管７が設けられている。
上記ホッパ３の上部にはドライアイスペレットを供給可能な開口部が形成され、下部には図示しないフィーダーが設けられ、図示しない制御手段によってドライアイスペレットを所定量ずつ上記分岐部７ｂに落下させるようになっている。
上記ブロア４の風量は上記制御手段によって調整可能となっており、ブロア４からの送気は上記直線部７ａを直線的に送風され、当該直線部７ａの途中で上記分岐部７ｂからドライアイスペレットが落下してくると、ドライアイスペレットを上記送気に混合させるようになっている。
上記内部配管７の直線部７ａの下流端には上記配管５を接続するための接続部７ｃが形成され、上記ブロア４からの送気が抵抗を受けずに配管５へと流入するよう、ブロア４から上記接続部７ｃまで直線状に形成されている。
そして上記配管５は内部にドライアイスペレットの搬送経路が形成された可撓性を有するチューブとなっており、その一端が上記内部通路の接続部７ｃに接続され、他端部が上記洗浄ノズル６に接続されている。
なお本実施例では、送風手段としてブロアを用いているが、コンプレッサを用いても良い。 The main body 2 is provided with a power supply, an operation panel, and the like (not shown). A straight portion 7a connected to the blower 4 is connected to the main body 2 and the hopper 3 is branched from the straight portion 7a. An internal pipe 7 composed of the branched portion 7b is provided.
An opening for supplying dry ice pellets is formed in the upper part of the hopper 3, and a feeder (not shown) is provided in the lower part so that the dry ice pellets are dropped by a predetermined amount onto the branch part 7b by a control means (not shown). It has become.
The air volume of the blower 4 can be adjusted by the control means, and the air supply from the blower 4 is blown linearly through the straight portion 7a, and the dry ice pellets from the branch portion 7b in the middle of the straight portion 7a. When falling, the dry ice pellets are mixed with the air supply.
A connecting part 7c for connecting the pipe 5 is formed at the downstream end of the straight line part 7a of the internal pipe 7, so that the air supplied from the blower 4 flows into the pipe 5 without receiving resistance. 4 to the connecting portion 7c are linearly formed.
The pipe 5 is a flexible tube having a dry ice pellet conveyance path formed therein, one end of which is connected to the connection portion 7c of the internal passage, and the other end thereof is the cleaning nozzle 6. It is connected to the.
In this embodiment, a blower is used as the air blowing means, but a compressor may be used.

次に、図２〜４を用いて洗浄ノズル６について説明すると、洗浄ノズル６は上記配管５に接続された第１〜第４管状部材１１〜１４と、上記第１管状部材１１に設けられたグリップ１５と、上記第２〜第４管状部材１２〜１４の間に介装された第１網状部材１６および第２網状部材１７とから構成されている。
上記第１〜第４管状部材１１〜１４はそれぞれ中心軸が一致するように軸方向に整列しており、内部に形成されたドライアイスペレットの搬送経路は送気の際の損失が少ない直線状に形成されている。
そして上記第１管状部材１１の先端部には、上記第２管状部材１２の後端部がボルトによって固定され、後端部には上記配管５が中心軸が一致するように接続されている。
一方、第２管状部材１２の先端部、第３管状部材１３の先端部および後端部、第４管状部材１４の後端部には、それぞれフランジ１２ａ、１３ａ、１４ａが形成され、これらフランジ同士を当接させた状態でクランプ１８を装着するようにになっている。
上記第１管状部材１１に設けられたグリップ１５は、使用時に作業者が保持するものとなっており、当該グリップ１５には上記本体部２を作動させてドライアイスペレットを搬送させるトリガースイッチ１５ａが設けられている。 Next, the cleaning nozzle 6 will be described with reference to FIGS. 2 to 4. The cleaning nozzle 6 is provided in the first to fourth tubular members 11 to 14 connected to the pipe 5 and the first tubular member 11. The grip 15 includes a first mesh member 16 and a second mesh member 17 interposed between the second to fourth tubular members 12 to 14.
The first to fourth tubular members 11 to 14 are aligned in the axial direction so that the central axes thereof coincide with each other, and the transport path of the dry ice pellets formed therein is a linear shape with little loss during air feeding. Is formed.
The rear end portion of the second tubular member 12 is fixed to the front end portion of the first tubular member 11 by a bolt, and the pipe 5 is connected to the rear end portion so that the central axes thereof coincide with each other.
On the other hand, flanges 12a, 13a, and 14a are formed at the distal end portion of the second tubular member 12, the distal end portion and the rear end portion of the third tubular member 13, and the rear end portion of the fourth tubular member 14, respectively. The clamp 18 is mounted in a state where the two are in contact with each other.
The grip 15 provided on the first tubular member 11 is held by an operator when in use, and the grip 15 has a trigger switch 15a for operating the main body 2 to convey dry ice pellets. Is provided.

上記第１、第２網状部材１６、１７はそれぞれステンレスなどの金属からなるプレートとなっており、第１網状部材１６は第２管状部材１２と第３管状部材１３との間に挟持され、第２網状部材１７は第３管状部材１３と第４管状部材１４との間に挟持されている。そして下流側に位置する第２網状部材１７は洗浄ノズル６の先端部近傍に位置している。
図３は第２管状部材１２の先端部および第３管状部材１３の後端部近傍について、これらを分解した状態を示しており、上記第２管状部材１２の先端のフランジ１２ａには上記第１網状部材１６を収容可能な凹部１２ｂが形成されている。
そして上記凹部１２ｂに第１網状部材１６を収容した状態で、フランジ１２ａとフランジ１３ａとを当接させることで、第１網状部材１６を洗浄ノズル６に形成された搬送通路上に位置させるようになっている。
なお図示しないが、上記第２網状部材１７も、第３管状部材１３の先端部のフランジ１３ａと第４管状部材１４の後端部のフランジ１４ａとの間で保持されるようになっている。 Each of the first and second mesh members 16 and 17 is a plate made of a metal such as stainless steel, and the first mesh member 16 is sandwiched between the second tubular member 12 and the third tubular member 13, and The two mesh members 17 are sandwiched between the third tubular member 13 and the fourth tubular member 14. The second mesh member 17 located on the downstream side is located near the tip of the cleaning nozzle 6.
FIG. 3 shows a state where the distal end portion of the second tubular member 12 and the vicinity of the rear end portion of the third tubular member 13 are disassembled, and the flange 12a at the distal end of the second tubular member 12 has the first flange 12a. A recess 12b that can accommodate the mesh member 16 is formed.
Then, the flange 12a and the flange 13a are brought into contact with each other while the first mesh member 16 is accommodated in the recess 12b, so that the first mesh member 16 is positioned on the conveyance path formed in the cleaning nozzle 6. It has become.
Although not shown, the second mesh member 17 is also held between the flange 13a at the distal end of the third tubular member 13 and the flange 14a at the rear end of the fourth tubular member 14.

図４（ａ）は第１網状部材１６の平面図を、図４（ｂ）は第２網状部材１７の平面図をそれぞれ示しており、これらはそれぞれ略正方形の貫通孔が所定の間隔を空けて形成された網状部分１６ａ、１７ａと、当該網状部分１６ａ、１７ａを囲繞する被挟持部分１６ｂ、１７ｂとから構成されている。
図４において、上記網状部分１６ａ、１７ａは想像線で示した上記第２〜第４管状部材１２〜１４の内周面よりも略内側に形成されており、上記被挟持部分１６ｂ、１７ｂが上記第２〜第４管状部材１２〜１４のフランジ１２ａ〜１４ａによって挟持されるようになっている。
また本実施例では、下流側に位置する第２網状部材１７の網目を、上流側に位置する第１網状部材１６の網目よりも細かくしている。すなわち、第２網状部材１７の貫通孔を第１網状部材１６の貫通孔よりも小さくし、かつ第２網状部材１７の貫通孔の数を第１網状部材１６の貫通孔の数よりも多くしたものとなっている。
たとえば、第１網状部材１６の各貫通孔の１辺を５ｍｍの正方形とするとともに隣接する貫通孔と貫通孔との間隔を１ｍｍとし、第２網状部材１７の各貫通孔の１辺を３．２ｍｍの正方形とするとともに隣接する貫通孔と貫通孔との間隔を０．８ｍｍとしている。
なお、上記第１、第２網状部材１６、１７の網目の大きさは一例であり、上記網目の大きさを異ならせることで、被洗浄物に応じて異なる粒径のドライアイスを噴射することができる。 4A shows a plan view of the first mesh member 16, and FIG. 4B shows a plan view of the second mesh member 17, each of which has a substantially square through hole with a predetermined interval. The net-like parts 16a and 17a formed in this way and the sandwiched parts 16b and 17b surrounding the net-like parts 16a and 17a.
In FIG. 4, the mesh portions 16a and 17a are formed substantially inside the inner peripheral surfaces of the second to fourth tubular members 12 to 14 indicated by imaginary lines, and the sandwiched portions 16b and 17b are The flanges 12a to 14a of the second to fourth tubular members 12 to 14 are sandwiched.
In the present embodiment, the mesh of the second mesh member 17 located on the downstream side is made finer than the mesh of the first mesh member 16 located on the upstream side. That is, the through holes of the second mesh member 17 are made smaller than the through holes of the first mesh member 16, and the number of through holes of the second mesh member 17 is made larger than the number of through holes of the first mesh member 16. It has become a thing.
For example, one side of each through hole of the first mesh member 16 is a 5 mm square, the interval between adjacent through holes is 1 mm, and one side of each through hole of the second mesh member 17 is 3. A 2 mm square is used, and an interval between adjacent through holes is set to 0.8 mm.
The size of the mesh of the first and second mesh members 16 and 17 is an example, and by varying the size of the mesh, dry ice having a different particle size is sprayed according to the object to be cleaned. Can do.

上記構成を有するドライアイス洗浄機１の使用方法について説明すると、使用者が上記洗浄ノズル６を保持して、グリップ１５に設けたトリガースイッチ１５ａを操作すると、最初にブロア４が作動して予め設定した風量で送気を開始し、その後風量が安定すると上記ホッパ３がドライアイスペレットを予め設定した供給量ずつ落下させる。
すると、落下したドライアイスペレットは内部配管７における直線部７ａと分岐部７ｂとの合流部分でブロア４からの送気により搬送され、上記接続部７ｃで配管５の内部に流入すると、その形状を維持したまま上記洗浄ノズル６へと搬送される。
洗浄ノズル６の後端に位置する第１管状部材１１から流入したドライアイスペレットは、第２管状部材１２の先端部に位置する第１網状部材１６に衝突し、これによりドライアイスペレットは当該第１網状部材１６の網状部分１６ａで比較的大きな破片に粉砕される。
この上記第１網状部材１６で粉砕されたドライアイス片は、その後第３管状部材１３の先端部に位置する第２網状部材１７に衝突し、これにより上記ドライアイス片は第２網状部材１７の網状部分１７ａでより細かく粉砕され、その後第４管状部材１４の先端より粉状となったドライアイスが被洗浄物に向けて噴射されるようになっている。 The method of using the dry ice washing machine 1 having the above configuration will be described. When the user holds the washing nozzle 6 and operates the trigger switch 15a provided on the grip 15, the blower 4 is first activated and preset in advance. When the air flow is started and the air flow is stabilized after that, the hopper 3 drops the dry ice pellets by a preset supply amount.
Then, the fallen dry ice pellets are transported by air supply from the blower 4 at the joining portion of the straight line portion 7a and the branching portion 7b in the internal pipe 7, and when the inside flows into the pipe 5 by the connecting portion 7c, It is conveyed to the washing nozzle 6 while being maintained.
The dry ice pellets that flowed in from the first tubular member 11 located at the rear end of the cleaning nozzle 6 collide with the first mesh member 16 located at the front end of the second tubular member 12, whereby the dry ice pellets are The mesh portion 16a of the mesh member 16 is crushed into relatively large pieces.
The dry ice pieces crushed by the first mesh member 16 then collide with the second mesh member 17 located at the tip of the third tubular member 13, whereby the dry ice pieces are separated from the second mesh member 17. Dry ice pulverized more finely at the mesh portion 17a and then powdered from the tip of the fourth tubular member 14 is jetted toward the object to be cleaned.

上記ドライアイス洗浄機１によれば、上記洗浄ノズル６の第１〜第４管状部材１１〜１４の内部に形成した搬送経路に沿って上記第１、第２網状部材１６、１７を設けたことにより、上記本体部２にドライアイスペレットを粉砕する粉砕手段を設けずとも、粉砕したドライアイスを被洗浄物に噴射することができる。
また上記第１、第２網状部材１６、１７を中心軸が一致するように接続したことで、洗浄ノズル６の内部で搬送経路が分岐せず、ブロア４からの送気の流速低下を最小限とすることができ、ドライアイスを高速で被洗浄物に衝突させることができ、また上記通路でのドライアイスの詰りを可及的に防止することができる。
さらに、下流側に設けた第２網状部材１７の網目を、上流側の第１網状部材１６の網目よりも細かくしたことで、最初に第１網状部材１６でドライアイスペレットを比較的大きな破片に粉砕し、その後第２網状部材１７によってより細かく粉砕することから、第１網状部材１６でドライアイスペレットを粉砕する際の流速の低下を低減することができ、また第１網状部材１６でのドライアイスの詰りを可及的に防止することができる。
さらに上記洗浄ノズル６は、第１、第２網状部材１６、１７を上記洗浄ノズル６の第２〜第４管状部材１２〜１４の間で挟持し、これらの連結部分を着脱可能な上記クランプ１８によって保持する構成を有しているため、第１、第２網状部材１６、１７を速やかに交換することが可能であり、メンテナンスを容易に行うことができる。 According to the dry ice cleaning machine 1, the first and second mesh members 16 and 17 are provided along the conveyance path formed inside the first to fourth tubular members 11 to 14 of the cleaning nozzle 6. Thus, the crushed dry ice can be sprayed onto the object to be cleaned without providing the main body 2 with a pulverizing means for pulverizing the dry ice pellets.
In addition, since the first and second mesh members 16 and 17 are connected so that their central axes coincide with each other, the conveyance path does not branch inside the cleaning nozzle 6, and a decrease in the flow rate of the air supplied from the blower 4 is minimized. The dry ice can collide with the object to be cleaned at a high speed, and the dry ice can be prevented from being clogged in the passage as much as possible.
Further, the mesh of the second mesh member 17 provided on the downstream side is made finer than the mesh of the first mesh member 16 on the upstream side, so that the first mesh member 16 first converts the dry ice pellets into relatively large pieces. Since it is pulverized and then finely pulverized by the second mesh member 17, it is possible to reduce a decrease in flow rate when the dry ice pellets are pulverized by the first mesh member 16, and the dryness at the first mesh member 16 is reduced. Ice clogging can be prevented as much as possible.
Further, the cleaning nozzle 6 holds the first and second mesh members 16 and 17 between the second to fourth tubular members 12 to 14 of the cleaning nozzle 6, and the clamp 18 which can attach and detach these connecting portions. Therefore, the first and second mesh members 16 and 17 can be quickly replaced, and maintenance can be easily performed.

図５は第２実施例にかかる洗浄ノズル６の断面図を示し、本実施例の洗浄ノズル６は上記第１実施例の洗浄ノズル６に対し、第１網状部材１６を第２管状部材１２と第３管状部材１３との間で挟持し、さらに下流側に位置する第２網状部材１７を、上記第３管状部材１３の先端に設けたものである。
このような構成とした場合、上記第３管状部材１３の先端に設けた第２網状部材１７の取り外しが容易となるので、被洗浄部材に応じて異なる網目の網状部材に速やかに取り換えることができる。 FIG. 5 is a sectional view of the cleaning nozzle 6 according to the second embodiment. The cleaning nozzle 6 of this embodiment is different from the cleaning nozzle 6 of the first embodiment in that the first mesh member 16 and the second tubular member 12 are used. A second mesh member 17 sandwiched between the third tubular member 13 and positioned further downstream is provided at the tip of the third tubular member 13.
In such a configuration, the second mesh member 17 provided at the tip of the third tubular member 13 can be easily removed, so that it can be quickly replaced with a mesh member having a different mesh depending on the member to be cleaned. .

なお、上記実施例では上記洗浄ノズル６に２枚の網状部材を備えているが、３枚以上の網状部材を設けてもよく、また上記網状部材を上記配管５の特に下流側に設けてもよい。
このような構成とした場合であっても網状部材をドライアイスペレットの搬送経路に沿って整列させることができるため、送気の流速低下を最小限として効率的にドライアイスを噴射することが可能となっている。
そして上記実施例のドライアイス洗浄機１の場合、洗浄ノズル６から第１、第２網状部材１６、１７を除くことで、ペレット状のドライアイスペレットを噴射して被洗浄物の洗浄を行うことも可能となっている。 In the above embodiment, the cleaning nozzle 6 is provided with two mesh members, but three or more mesh members may be provided, and the mesh member may be provided particularly on the downstream side of the pipe 5. Good.
Even in such a configuration, the mesh members can be aligned along the transport path of the dry ice pellets, so it is possible to efficiently inject dry ice with minimal reduction in the flow rate of the air supply. It has become.
And in the case of the dry ice washing machine 1 of the said Example, by removing the 1st, 2nd net-like members 16 and 17 from the washing nozzle 6, a pellet-like dry ice pellet is injected and the to-be-washed | cleaned object is wash | cleaned. Is also possible.

１ ドライアイス洗浄機 ３ ホッパ（供給手段）
４ ブロア（送風手段） ５ 配管
６ 洗浄ノズル １１〜１４ 第１〜第４管状部材
１６ 第１網状部材 １７ 第２網状部材 1 Dry ice washing machine 3 Hopper (supply means)
4 Blower (Blowing Means) 5 Piping 6 Cleaning Nozzles 11-14 First to Fourth Tubular Members 16 First Mesh Member 17 Second Mesh Member

Claims (3)

ドライアイスを供給する供給手段と、送風によりドライアイスを搬送する送風手段と、上記ドライアイスが流通する配管と、当該配管の先端に設けられてドライアイスを噴射する洗浄ノズルとを備えたドライアイス洗浄機において、
上記供給手段はペレット状のドライアイスペレットを供給し、
上記配管および上記洗浄ノズルに形成されたドライアイスの搬送経路に複数枚の網状部材を設けるとともに、この搬送経路の下流側に位置する網状部材の網目を、上流側に位置する網状部材の網目よりも細かくして、これら複数枚の網状部材に順次上記ドライアイスペレットを衝突させて粉砕することを特徴とするドライアイス洗浄機。 Dry ice comprising a supply means for supplying dry ice, a blower means for conveying dry ice by blowing, a pipe through which the dry ice circulates, and a cleaning nozzle provided at the tip of the pipe for injecting dry ice In the washing machine
The supply means supplies pellet-shaped dry ice pellets,
A plurality of mesh members are provided in the dry ice conveyance path formed in the pipe and the cleaning nozzle, and the mesh of the mesh member located on the downstream side of the conveyance path is more than the mesh of the mesh member located on the upstream side. The dry ice cleaning machine is characterized in that the dry ice pellets are successively collided with the plurality of mesh members and pulverized. 上記網状部材の１つを上記洗浄ノズルの噴射口先端部に設けることを特徴とする請求項１に記載のドライアイス洗浄機。   2. The dry ice cleaning machine according to claim 1, wherein one of the mesh members is provided at a front end of the injection nozzle of the cleaning nozzle. 上記洗浄ノズルは、上記搬送経路の形成された複数の分割可能な管状部材を備え、
これら管状部材と管状部材との間に上記網状部材を設けたことを特徴とする請求項１または請求項２のいずれかに記載のドライアイス洗浄機。 The cleaning nozzle includes a plurality of splittable tubular members formed with the transport path,
The dry ice cleaning machine according to claim 1 or 2, wherein the mesh member is provided between the tubular members.
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