JPH0735554U - Suction nozzle device for transportation - Google Patents
Suction nozzle device for transportationInfo
- Publication number
- JPH0735554U JPH0735554U JP7153393U JP7153393U JPH0735554U JP H0735554 U JPH0735554 U JP H0735554U JP 7153393 U JP7153393 U JP 7153393U JP 7153393 U JP7153393 U JP 7153393U JP H0735554 U JPH0735554 U JP H0735554U
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- transport medium
- transportation
- transport
- suction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000006163 transport media Substances 0.000 claims abstract description 57
- 238000002347 injection Methods 0.000 claims abstract description 20
- 239000007924 injection Substances 0.000 claims abstract description 20
- 239000002609 medium Substances 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 239000013505 freshwater Substances 0.000 claims description 4
- 239000013535 sea water Substances 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002689 soil Substances 0.000 abstract description 23
- 239000004576 sand Substances 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 8
- 239000010410 layer Substances 0.000 description 9
- 239000008187 granular material Substances 0.000 description 8
- 238000009412 basement excavation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004927 clay Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000012254 powdered material Substances 0.000 description 2
- 238000011002 quantification Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Air Transport Of Granular Materials (AREA)
Abstract
(57)【要約】
【目的】砂、砂利、土砂、黒土などで代表される各種難
搬送バラ物を、真空ポンプを要さず簡単な構造により円
滑に効率よく吸込み搬送することができる吸込みノズル
装置を提供することにある。
【構成】下端に吸込み口２を有するノズル本体１に加圧
輸送媒体を送り込むエジェクタノズル３を設け、該エジ
ェクタノズル３よりも下方には噴射孔４１０をほぼ吸込
み口中心線上に向けた複数対の切込み用加圧輸送媒体吐
出ノズル４１を設けて該切込み用加圧輸送媒体吐出ノズ
ル４１で被搬送物中に圧縮エアを切り込ませ衝突により
上昇流を創成させるように構成した。
(57) [Summary] [Purpose] A suction nozzle that can smoothly and efficiently suck and convey various difficult-to-transport loose materials typified by sand, gravel, earth and sand, and black soil with a simple structure and without a vacuum pump. To provide a device. An ejector nozzle 3 for feeding a pressurized transport medium is provided in a nozzle body 1 having a suction port 2 at a lower end thereof, and a plurality of pairs of injection holes 410 are provided below the ejector nozzle 3 and substantially aligned with the center line of the suction port. A notch pressurizing transport medium discharge nozzle 41 is provided, and compressed air is cut into the conveyed object by the notch pressurizing transport medium discharge nozzle 41 to generate an upward flow by collision.
Description
【０００１】[0001]
本考案は輸送媒体を用いた形式の輸送用吸込みノズル装置に関する。 The present invention relates to a suction nozzle device for transportation of a type using a transportation medium.
【０００２】[0002]
たとえば深礎基礎工事においては、縦坑の掘削で生ずるズリと称する残土を外 部に搬出することが不可欠である。この残土の搬出方法として従来では縦坑の中 心にゴム製のセンターチューブを垂下し、毎回の掘削のたびにこのセンターチュ ーブを通してクレーンでバッグナーを降ろし、作業員がシャベル類で残土を集め バッグナーに装入し、クレーンでバッグナーを吊りあげるという方法が取られて いた。このため多大な労力と時間を要して工事の進捗が損なわれ、またクレーン やセンタースチューブの使用が不可欠であるため工事費が高くなるという問題が あった。 また、最近ビルなどの屋上に庭園を作ることが多くなっているが、この屋上庭 園の造成に必要な土砂類などの材料を地上から高層の屋上まで能率よく輸送でき る手段がなく、このため、それら材料をいちいち分包状態としてエレベータ類を 使用して持ち運ぶという煩雑で手間と時間のかかる作業を行うほかなかった。 For example, in deep foundation work, it is indispensable to carry out the residual soil, which is called scrap, generated by excavation of a shaft to the outside. Conventionally, a rubber center tube was hung down in the center of a shaft, and a bagner was unloaded by a crane through this center tube with a crane at the time of each excavation. The method used was to load the bagner and hang the bagner with a crane. For this reason, there was a problem that the progress of the construction was impaired with a great amount of labor and time, and the construction cost was increased because the use of the crane and the center tube was indispensable. Recently, gardens are often built on the roofs of buildings, but there is no means to efficiently transport the materials such as earth and sand necessary for the construction of this roof garden from the ground to the high-rise roof. For this reason, there was no choice but to perform the complicated and time-consuming work of carrying these materials in a packaged state using elevators.
【０００３】 一般に穀類、砂糖、プラスチックなどの粉粒状物の輸送方法として空気輸送法 が知られている。かかる輸送方法において最も重要な要素は粉粒状物と気流を混 合させる先端供給機構であり、その先端供給機構として真空吸込みノズルがある 。この真空吸込みノズルは大別すると二重円筒型と単筒型があり、前者は輸送管 の外側にこれと同心状に外筒を取付け、外筒の先端を粉粒状物表面に接触させた 状態で輸送管の管端と粉粒状物表面との間に所定の隙間が形成されるように輸送 管を持ち上げ、輸送管の下流側(輸送先側)で真空ポンプにより吸引しながら外筒 と輸送管のあいだから空気を流入させることで空気量を増加させるようにしたも のである。 後者は輸送管の先端部を粉粒状物層中に押し込みつつ、輸送管下流側で真空ポ ンプにより吸引して管端から粉粒状物を吸い上げるものであり、この時の粉粒状 物の浮上を補助するためノズル部の中間外周にリングノズルを設け、これから二 次空気を輸送管内に補給するようにしたものである。An air transportation method is generally known as a transportation method for powdery and granular materials such as grains, sugar, and plastics. The most important element in such a transportation method is a tip feed mechanism that mixes powder and particulate matter with an air stream, and as the tip feed mechanism, there is a vacuum suction nozzle. This vacuum suction nozzle is roughly classified into a double cylinder type and a single cylinder type.The former is a state in which an outer cylinder is concentrically attached to the outside of the transportation pipe and the tip of the outer cylinder is in contact with the surface of the granular material. Lift the transportation pipe so that a predetermined gap is formed between the end of the transportation pipe and the surface of the granular material, and transport it with the outer cylinder while suctioning with a vacuum pump on the downstream side (transportation destination side) of the transportation pipe. It was designed to increase the amount of air by injecting air between the pipes. In the latter, the tip of the transport pipe is pushed into the powder / granular material layer, and the powder / granular material is sucked up from the pipe end by suction with a vacuum pump on the downstream side of the transport pipe. In order to assist, a ring nozzle is provided on the middle outer circumference of the nozzle part so that secondary air can be replenished into the transportation pipe.
【０００４】 しかしながらこれら吸込みノズルはいずれも吸込み動力源として真空ポンプを 必要とし、これを輸送管の下流側に接続しなければならないため輸送系が複雑で 高価なものになるとともに、適用範囲が限定される問題があった。また、いずれ も真空ポンプの能力が吸込み性能を左右するため、被搬送物が比較的流動性のよ いものの場合はともかく、造園用材料として用いられる黒土や火山灰土のように 含水率が高く粘土質を含むものや、掘削残土のように土、砂の混合物あるいはこ れらと石の混合物といった比重や大きさがまちまちで流動性が悪いものの場合に はスムーズに効率よく吸込み移送することができず、閉塞を起こしやすい。この ため、スクリューコンベアやロータリフィーダなどの圧送手段を併用しなければ ならないという問題があった。However, all of these suction nozzles require a vacuum pump as a suction power source, and this must be connected to the downstream side of the transportation pipe, which makes the transportation system complicated and expensive, and limits the application range. There was a problem. In addition, since the capacity of the vacuum pump affects the suction performance in all cases, the clay has a high water content, such as black soil and volcanic ash soil used as landscaping materials, regardless of whether the transported object is relatively fluid. In the case of a material containing quality, a mixture of soil and sand or a mixture of these and stone such as excavated soil, which has different specific gravity and size and poor fluidity, the suction and transfer can be performed smoothly and efficiently. No, it is easy to cause blockage. For this reason, there is a problem in that pressure feeding means such as a screw conveyor and a rotary feeder must be used together.
【０００５】 本考案は前記のような問題点を解消するために考案されたもので、その目的と するところは、穀類、砂糖、プラスチックなど各種粉粒状物は勿論、砂、砂利、 土砂、黒土、赤土などで代表される各種難輸送バラ物を、真空ポンプを要さず簡 単な構造により円滑に効率よく吸込み搬送することができる吸込みノズル装置を 提供することにある。The present invention was devised to solve the above-mentioned problems, and its purpose is not only various powdery and granular materials such as grains, sugar and plastics, but also sand, gravel, earth and sand, and black soil. Another object of the present invention is to provide a suction nozzle device capable of smoothly and efficiently sucking and transporting various kinds of difficult-to-transport bulk materials represented by red clay by using a simple structure without using a vacuum pump.
【０００６】[0006]
上記目的を達成するため本考案は、下端に吸込み口を有するノズル本体に加圧 輸送媒体を吹き込むエジェクタノズルを設けるとともに、該エジェクタノズルよ りも下方には噴射孔をほぼ吸込み口中心線上に向けた複数対の切込み用輸送媒体 吐出ノズルを設け、該複数対の切込み用輸送媒体吐出ノズルで被搬送物中に加圧 輸送媒体を切り込ませて上昇流を創成させるようにしたことにある。 前記輸送媒体はエジェクタノズルと切込み用輸送媒体吐出ノズルとで同一種類 でもよいし異種類でもよく、それら輸送媒体としては海水、真水などの液体、炭 酸ガス、窒素ガス、人工的に配合された気体、空気などの気体から選択される。 To achieve the above object, the present invention provides an ejector nozzle for injecting a pressurized transport medium to a nozzle body having a suction port at a lower end, and directs an injection hole below the ejector nozzle almost on the center line of the suction port. Further, a plurality of pairs of cutting medium discharging nozzles are provided, and a plurality of pairs of cutting medium discharging nozzles are used to cut the pressurized transportation medium into the transported object to create an upward flow. The transport medium may be the same type or different types for the ejector nozzle and the transport medium discharge nozzle for cutting, and the transport medium may be a liquid such as seawater or fresh water, carbon dioxide gas, nitrogen gas, or an artificial mixture. It is selected from gases such as gas and air.
【０００７】[0007]
バラ物や粉粒状物を搬送するに当っては、吸込み口を被搬送物の表層に近接あ るいは接触させ、この状態でエジェクタノズルに加圧た輸送媒体を供給するもの で、こうすればエジェクタノズルからの加圧輸送媒体がノズル本体内に吹込まれ ることにより圧送用高速流が形成され、該エジェクタノズルよりも上流には真空 域が発生する。しかしその真空域は強制力が乏しいため、吸込み口から被搬送物 を多量に吸い込むことはできない。 しかしながら本考案ではこうしたエジェクタノズルからの加圧輸送媒体の吐出 と併行して複数対の切込み用輸送媒体吐出ノズルに前記輸送媒体と同一又は異種 類の加圧輸送媒体を供給する。 各切込み用輸送媒体吐出ノズルは吸込み口より下方のほぼ中心線上に噴射孔が 向いており、このため各噴射孔から噴射された加圧輸送媒体は対になって被搬送 物中にジェット状に切込み、被搬送物の密度や流通抵抗により自然形成される仮 想的な床盤でぶつかりあい反射して上昇流となる。 被搬送物は前記加圧輸送媒体の切込みによる衝撃で粒子間の結合が解かれて、 続く上昇流の作用により分散するとともに浮上させられ、吸込み口から真空域に 押し込まれる。前記上昇流は同時に真空域の媒体流速を増大させるため被搬送物 は加速され、高速で輸送管中を媒体に載って搬送されられる。切込み用輸送媒体 吐出ノズルによる切込みと上昇流化は連続して行われるため、被搬送物は多量に かつ良好な定量性をもって搬送される。 When transporting loose or powdered materials, the suction port is brought close to or in contact with the surface layer of the transported object, and the pressurized transport medium is supplied to the ejector nozzle in this state. The pressurized transport medium from the ejector nozzle is blown into the nozzle body to form a high-speed flow for pressure feeding, and a vacuum region is generated upstream of the ejector nozzle. However, since the vacuum region has a poor forcing force, it is not possible to suck a large amount of the transported object from the suction port. However, in the present invention, in parallel with the discharge of the pressurized transport medium from the ejector nozzle, the same or a different type of the pressurized transport medium as the transport medium is supplied to the plurality of pairs of slit transport medium discharge nozzles. The ejection holes of each of the transport medium discharge nozzles for incisions face almost the center line below the suction port, so that the pressurized transport medium ejected from each ejection hole forms a pair in the form of a jet in the transported object. It cuts and collides with a virtual floorboard that is naturally formed due to the density and flow resistance of the transported object, and it reflects and becomes an upward flow. The material to be conveyed is disengaged from the bonds between the particles by the impact of the cut of the pressurized transport medium, dispersed and floated by the action of the subsequent upward flow, and pushed into the vacuum region from the suction port. At the same time, the ascending flow increases the flow velocity of the medium in the vacuum region, so that the object to be conveyed is accelerated and is carried on the medium in the transportation pipe at a high speed. Transport medium for slitting Since the slitting by the discharge nozzle and the upward flow are performed continuously, a large amount of transported objects can be transported with good quantification.
【０００８】[0008]
以下本考案の実施例を添付図面に基いて説明する。 図１と図２は本考案による粉粒物輸送用吸込みノズル装置の第１実施例を示し ている。１はノズル本体であり下端に所要角度で広がったベルマウス状の吸込み 口２が一体または一体的に設けられている。この実施例ではノズル本体１は吸込 み方向操作自由度を高めるため剛製管部１ａと可撓管部１ｂで構成している。 ３は前記吸込み口２から所定距離隔たった部位に設けられたエジェクタノズル であり、その構造は任意であるが、この実施例では下流側中心向かって集束する ように複数の斜状噴孔３００を配設した吐出リング３０と、斜状噴孔３００の入 口側外周に環状通路３３を形成するように外囲する筒体３２とを有し、筒体３２ の上下に連結管３４，３５が固定されている。連結管３４には剛性または可撓性 の輸送管６が接続され、連結管３５にこの実施例では可撓管部１ｂを接続してい る。筒体３２には環状通路３３に通じる加圧輸送媒体供給管３６が接続され、加 圧輸送媒体供給管３６は調節バルブ３７を介して加圧輸送媒体供給源５に導かれ る。 An embodiment of the present invention will be described below with reference to the accompanying drawings. 1 and 2 show a first embodiment of a suction nozzle device for transporting powder and granules according to the present invention. Reference numeral 1 denotes a nozzle body, which is integrally or integrally provided at its lower end with a bell mouth-shaped suction port 2 which is widened at a required angle. In this embodiment, the nozzle body 1 is composed of a rigid tube portion 1a and a flexible tube portion 1b in order to increase the degree of freedom of operation in the suction direction. Reference numeral 3 denotes an ejector nozzle provided at a position separated from the suction port 2 by a predetermined distance. The structure of the ejector nozzle is arbitrary, but in this embodiment, a plurality of oblique injection holes 300 are formed so as to converge toward the downstream center. The discharge ring 30 is provided, and the cylindrical body 32 is provided around the inlet side of the oblique injection hole 300 so as to form an annular passage 33. The connecting pipes 34 and 35 are provided above and below the cylindrical body 32. It is fixed. A rigid or flexible transport pipe 6 is connected to the connecting pipe 34, and a flexible pipe portion 1b is connected to the connecting pipe 35 in this embodiment. A pressurized transport medium supply pipe 36 leading to the annular passage 33 is connected to the cylindrical body 32, and the pressurized transport medium supply pipe 36 is guided to the pressurized transport medium supply source 5 via a control valve 37.
【０００９】 ４は切込み用ノズル機構であり、前記エジェクタノズル３と吸込み口２間のノ ズル本体１にブラケット４４を介して同心状に取り付けられた環状管４０と、該 環状管４０に基部が接続された複数本の切込み用輸送媒体吐出ノズル４１とを備 えており、環状管４０の一部には調整バルブ４２を介して加圧輸送媒体供給管４ ３が接続されている。該加圧輸送媒体供給管４３は加圧輸送媒体がエジェクタノ ズル３の加圧輸送媒体と同一種類の場合には、図１の実線で示すように加圧輸送 媒体供給管３６共通配管系とすることもできるし、別々の配管系とすることもで きる。加圧輸送媒体がエジェクタノズル３の加圧輸送媒体と異種類の場合、加圧 輸送媒体供給管４３は図１仮想線のように加圧輸送媒体供給源５’に導かれる。 本考案で用いる輸送媒体は液体、気体のいずれも含まれるが、中でも真水、海 水、炭酸ガス、窒素ガス、人工的に配合された気体及び空気などが好ましく、入 手が容易な点などから一般に空気が好ましいと言えよう。 各切込み用輸送媒体吐出ノズル４１は偶数本たとえば４〜１０本が用いられ、 図２に示すように対角線上で２本が対をなし、同一垂直面上にあるように環状管 ４０に配置されている。各切込み用輸送媒体吐出ノズル４１は少なくとも中間か ら先が内方に屈曲し、吸込み口２よりも下位レベルにおいて各噴射孔４１０は図 １のように吸込み口中心線ＣＬ上にほぼ集束する角度に向けられている。集束点 Ｐは各対の切込みエアノズルがすべて同じであってもよいし、前後に多少ずれて いてもよい。噴射孔４１０は断面が真円でもよいし長孔状などであってもよい。 吸込み口２の下端から噴射孔４１０までの距離Ｌは被搬送物の物性、加圧輸送 媒体の圧力、流量などによって異なるが一般的には１〜５０ｃｍの範囲から適宜 選定すればよい。 環状管４０の適所には取手４５が取り付けられている。Reference numeral 4 denotes a cutting nozzle mechanism, which is an annular pipe 40 concentrically attached to the nozzle body 1 between the ejector nozzle 3 and the suction port 2 via a bracket 44, and a base portion of the annular pipe 40. It is provided with a plurality of notch transport medium discharge nozzles 41 connected to each other, and a pressurized transport medium supply pipe 43 is connected to a part of the annular pipe 40 via a regulating valve 42. When the pressurized transport medium is the same type as the pressurized transport medium of the ejector nozzle 3, the pressurized transport medium supply pipe 43 has a common piping system for the pressurized transport medium supply pipe 36 as shown by the solid line in FIG. It is possible to have separate piping systems. When the pressurized transport medium is different from the pressurized transport medium of the ejector nozzle 3, the pressurized transport medium supply pipe 43 is guided to the pressurized transport medium supply source 5'as shown by the phantom line in FIG. The transport medium used in the present invention includes both liquid and gas. Among them, fresh water, seawater, carbon dioxide gas, nitrogen gas, artificially mixed gas and air are preferable, and they are easy to obtain. Air is generally preferred. Even number of, for example, 4 to 10 nozzles are used as the transport medium discharge nozzles 41 for cutting, and two nozzles form a pair on a diagonal line as shown in FIG. 2 and are arranged in the annular pipe 40 so as to be on the same vertical plane. ing. Each cutting medium discharge nozzle 41 is bent inward at least from the middle to the tip, and at a lower level than the suction port 2, the injection holes 410 are substantially focused on the suction port center line CL as shown in FIG. Is directed to. The focusing point P may be the same for all the cut air nozzles of each pair, or may be slightly deviated back and forth. The injection hole 410 may have a perfect circular cross section or a long hole shape. The distance L from the lower end of the suction port 2 to the injection hole 410 varies depending on the physical properties of the transported object, the pressure of the pressurized transport medium, the flow rate, etc., but generally it may be appropriately selected from the range of 1 to 50 cm. A handle 45 is attached to an appropriate position of the annular pipe 40.
【００１０】 図３は本考案の第２実施例を示しており、この実施例ではノズル本体１は可撓 管部を有しない剛性管からなり、連結管３５に直接接続されている。 図４は本考案の第３実施例を示しており、この実施例では吸込み能率をよくす るため、ノズル本体１の吸込み口２を部分的に延長して斜めカット状のベルマウ ス形としている。現場の状況に対応できるように好ましくは吸込み口２はノズル 本体１に対してねじ、バンド金具などにより着脱可能とする。 なお、いずれの実施例においても、切込み用ノズル機構４はノズル本体１に位 置固定とされてもよいし、ノズル本体１の長手方向に移動可能としてもよい。こ れはたとえばノズル本体１に複数段の孔(または長孔)を有する位置調整用ブラケ ットを固設し、この位置調整用ブラケットにブラケット４４を当接させ、任意の 孔を選択してボルトナット類で緊締するような構造とすればよい。 環状管４０は必要に応じてノズル本体１にジャケット状に設けられてもよい。 あるいは場合によっては環状管４０に被搬送物上に載置可能なスタンドないし脚 を設けてもよい。すなわち本考案は手持ち式、定置式のいずれでもよい。 調整バルブ３７と調整バルブ４２は手動操作弁でもよいし電磁弁などの自動操作 弁であってもよい。 また、搬送距離が長い場合には輸送管６にも前記エジェクタノズル３を介在さ せてもよい。FIG. 3 shows a second embodiment of the present invention. In this embodiment, the nozzle body 1 is a rigid pipe having no flexible pipe portion and is directly connected to the connecting pipe 35. FIG. 4 shows a third embodiment of the present invention. In this embodiment, in order to improve the suction efficiency, the suction port 2 of the nozzle body 1 is partially extended to form an obliquely cut bell-mouth type. . The suction port 2 is preferably attachable to and detachable from the nozzle body 1 with screws, band fittings, or the like so as to correspond to the situation at the site. In any of the embodiments, the cutting nozzle mechanism 4 may be fixed to the nozzle body 1 or may be movable in the longitudinal direction of the nozzle body 1. For example, a position adjusting bracket having a plurality of holes (or long holes) is fixedly installed in the nozzle body 1, the bracket 44 is brought into contact with the position adjusting bracket, and an arbitrary hole is selected. The structure may be such that bolts and nuts are tightened. The annular tube 40 may be provided in the nozzle body 1 in a jacket shape, if necessary. Alternatively, in some cases, the annular pipe 40 may be provided with a stand or a leg that can be placed on the object to be conveyed. That is, the present invention may be either handheld or stationary. The adjusting valve 37 and the adjusting valve 42 may be manually operated valves or may be automatically operated valves such as solenoid valves. Further, when the transport distance is long, the ejector nozzle 3 may be interposed in the transport pipe 6.
【００１１】[0011]
図５は本考案による吸い込みノズル装置Ａを深礎基礎工事の掘削残土の搬出に 適用した例を示している。７は掘削中の縦穴で、周囲を支保工材としてのライナ ープレート７０で土止めされており、輸送本管６’はライナープレート７０に保 持具を介して取り付けられ、吐出側がワークステージ８から地上に伸び図示しな い排土ヤードに導かれており、輸送本管６’の下端にスイベルジョイント６０を 介してホースなどからなる輸送管６が接続されこれにエジェクタノズル３が接続 されている。一方、地上には加圧輸送媒体供給源としてたとえばコンプレッサ５ が配され、吐出導管５０に加圧輸送媒体供給管３６と加圧輸送媒体供給管４３が 接続されている。 本考案による吸込みノズル装置Ａは掘削作業中は取手４５などにより適宜ライ ナープレート７０に留めておき、毎回の掘削作業の終わるたびに縦穴７の穴底７ ’に降ろして使用される。 FIG. 5 shows an example in which the suction nozzle device A according to the present invention is applied to the discharge of excavated soil for deep foundation work. 7 is a vertical hole during excavation, the periphery of which is earth-stopped by a liner plate 70 as a supporting material, and the transport main 6'is attached to the liner plate 70 via a retainer, and the discharge side is from the work stage 8 It is guided to an earth unloading yard (not shown) on the ground, and a transport pipe 6 such as a hose is connected to the lower end of the transport main 6'through a swivel joint 60, and the ejector nozzle 3 is connected to this. . On the other hand, on the ground, for example, a compressor 5 is arranged as a pressurized transportation medium supply source, and a pressurized transportation medium supply pipe 36 and a pressurized transportation medium supply pipe 43 are connected to the discharge conduit 50. The suction nozzle device A according to the present invention is appropriately held on the liner plate 70 by the handle 45 or the like during the excavation work, and is used by lowering it to the hole bottom 7'of the vertical hole 7 after each excavation work.
【００１２】 被搬送物としての残土を排出するに当っては、図５あるいは図６のように吸込 み口２を残土表面に近接させ、調整バルブ３７と調整バルブ４２を開くもので、 調整バルブ３７から供給された加圧輸送媒体この例では高圧(例えば5Kg/cm2以上 )の圧縮エアはエジェクタノズル３の環状通路３３から斜状噴孔３００により吐 出リング３０の下流側中心線に向けて噴射され、それにより斜状噴孔３００より 下流側に圧送域Ｃが、また斜状噴孔３００より下流側のノズル本体部分に真空域 Ｄが創成され、それにより吸込み口２に吸込み力が生ずる。 また、調整バルブ４２から供給された高圧の圧縮エアは環状管４０から各切込 み用輸送媒体吐出ノズル４１に送入され、それぞれ吸込み口２よりも下位レベル の噴射孔４１０からジェット状に噴射されて残土層Ｂ内に切れ込む。 複数本の切込み用輸送媒体吐出ノズル４１は対角線上で対をなしかつ噴射孔軸 線が吸込み口軸線上に集束しているため、吸込み口２の直下の残土層Ｂは周囲か ら複数本の錐が同時に打ち込まれたように錐状に掘り込まれ、そのときの衝撃的 な力で全噴射孔４１０で囲まれた領域の粒子がほぐされるとともに外側域の残土 層Ｂ’と分離される。When discharging the residual soil as the transported object, as shown in FIG. 5 or 6, the suction port 2 is brought close to the surface of the residual soil and the adjusting valve 37 and the adjusting valve 42 are opened. Pressurized transport medium supplied from 37 In this example, high-pressure (for example, 5 kg / cm 2 or more) compressed air is directed from the annular passage 33 of the ejector nozzle 3 to the downstream center line of the discharge ring 30 by the oblique injection hole 300. And a vacuum region D is created downstream of the oblique injection hole 300, and a vacuum area D is created in the nozzle body portion downstream of the oblique injection hole 300. As a result, suction force is applied to the suction port 2. Occurs. Further, the high-pressure compressed air supplied from the adjusting valve 42 is sent from the annular pipe 40 to the notch transport medium discharge nozzle 41, and is jetted in a jet form from the jet holes 410 at a level lower than the suction port 2. It is cut into the residual soil layer B. Since the plurality of transport medium discharge nozzles 41 for cutting are diagonally paired and the injection hole axis is focused on the suction port axis, the residual soil layer B immediately below the suction port 2 is surrounded by a plurality of nozzles. The cones are dug into the cone as if they were simultaneously driven, and the impact force at that time loosens the particles in the region surrounded by all the injection holes 410 and separates them from the residual soil layer B ′ in the outer region.
【００１３】 残土層Ｂは下層に向かうほど密度が高く通気抵抗が大きくなるため噴射孔４１ ０からの圧縮エアは貫入力が低減し、所定深さ位置に仮想床盤Ｂ”が生じる。複 数個の各噴射孔４１０は対角線上で対となっているため切込み圧縮エアはほとん ど分散することなく仮想床盤Ｂ”で反射し衝突しあって集合し、吸込み口２に向 かう上昇流となる。このため残土層Ｂはさらにほぐされて分散し、土、砂、石が 混合し湿り気を帯びた搬送性の悪い性状であるにもかかわらず上昇流により効果 的に持ち上げられ、吸込み口２からノズル本体１内に押し込まれる。 真空域Ｄの真空度はエジェクタノズル３から遠ざかるほど弱くなるが、前記の ように残土層Ｂに切れ込んだ高圧圧縮エアが上昇流となって真空域Ｄに向かうた め真空域Ｄの気流速度が増大する。したがって残土は真空域Ｄに強力に吸い込ま れ、圧送域Ｃの気流に乗って円滑に気流搬送される。 ノズル本体１に可撓性管１ｂを設けたり、輸送管６をホースとすることにより 吸込み口２を希望する方向に容易に向けることができ、また図６のように斜めカ ット状の吸込み口２を用いることにより深礎基礎工事の掘削残土の搬出を労力を 要さず、簡易、迅速に行うことができる。またクレーンやセンターケーシングも 省略できるため設備が簡潔なものとなり、小径の縦穴の掘削も容易に行うことが できる。 なお、前記のように全噴射孔４１０で囲まれた領域が外側域と分離されて連続 的に吸い込まれるため良好な定量性も確保され、従って残土以外のバラ物や粉粒 状物の搬送も的確に行うことができる。The density of the residual soil layer B increases toward the lower layer and the ventilation resistance increases, so that the penetration of compressed air from the injection holes 410 is reduced, and a virtual floor B "is generated at a predetermined depth position. Since the individual injection holes 410 form a pair on a diagonal line, the cut compressed air does not disperse almost and is reflected by the virtual floor B "and collides with each other to gather together and form an upward flow toward the suction port 2. Become. For this reason, the residual soil layer B is further loosened and dispersed, and although soil, sand and stones are mixed and it is moist and has poor transportability, it is effectively lifted by the upward flow and the nozzle from the suction port 2 It is pushed into the body 1. The degree of vacuum in the vacuum region D becomes weaker as the distance from the ejector nozzle 3 increases, but the high-pressure compressed air cut into the residual soil layer B becomes an upward flow toward the vacuum region D as described above, so that the air velocity in the vacuum region D increases. Increase. Therefore, the residual soil is strongly sucked into the vacuum region D, and is smoothly carried by the air flow in the pressure feeding region C. The suction port 2 can be easily oriented in a desired direction by providing the nozzle body 1 with a flexible tube 1b or by using the transportation tube 6 as a hose, and as shown in FIG. By using the mouth 2, it is possible to easily and quickly carry out the excavated residual soil for the deep foundation work without labor. Also, since the crane and center casing can be omitted, the equipment is simple and the drilling of small vertical holes can be done easily. As described above, since the area surrounded by all the injection holes 410 is separated from the outer area and continuously sucked, good quantification is also ensured, and therefore, it is also possible to transfer loose or powdered materials other than the remaining soil. Can be done accurately.
【００１４】[0014]
【具体例１】 次に本考案装置Ａを実地に試験した結果を示す。 本考案装置Ａは下端に径が２５０mmφの吸込み口を設けた長さ４００mm、内径 １００mmφのノズル本体に長さ１００mmの耐圧ホースを接続し、耐圧ホースの上 端に１６の噴孔数を持つエジェクタノズルを設けた。 一方、吸込み口端から１５０mmの位置に環状管を同心状に固定し、これに内径 ８mmφ、噴孔径２mmφの６本の切込み用輸送媒体吐出ノズルを対角線上で対をな すように、かつ噴孔軸線が吸込み口端から約１０cmの中心線上に集束するように 取付け、エジェクタノズルに内径１００mmφの輸送管(耐圧ホース)を接続した。 対象粉粒状物として含水率が約４０%の土砂を地表に１５m3堆積させ、コン
プ レッサから７kg/cm2の圧縮エアをエジェクタノズルと環状管にそれぞれ供給した 。その結果、全量を約６０分で垂直距離１５mに連続輸送することができた。 比較のため、環状管に対する圧縮エアの供給を止めて実施したところ、能力は １／３以下となった。この結果から、エジェクタノズルと切込みノズル機構の併 用がきわめて有効であることがわかる。SPECIFIC EXAMPLE 1 Next, the results of actual tests of the device A of the present invention will be shown. The device A of the present invention is an ejector having a nozzle body having a length of 400 mm and an inner diameter of 100 mmφ with a suction port having a diameter of 250 mmφ connected to a pressure hose of 100 mm length, and an upper end of the pressure hose having 16 injection holes. A nozzle was provided. On the other hand, an annular pipe is concentrically fixed at a position 150 mm from the suction port end, and six cutting medium discharge nozzles with an inner diameter of 8 mmφ and a nozzle hole diameter of 2 mmφ are diagonally paired with this nozzle. The hole axis was attached so that it was focused on the center line of about 10 cm from the end of the suction port, and a transport pipe (pressure resistant hose) with an inner diameter of 100 mmφ was connected to the ejector nozzle. 15 m 3 of earth and sand with a water content of about 40% was deposited on the surface of the ground as the target granular material, and compressed air of 7 kg / cm 2 was supplied from the compressor to the ejector nozzle and the annular pipe, respectively. As a result, the entire amount could be continuously transported to the vertical distance of 15 m in about 60 minutes. For comparison, when the supply of compressed air to the annular pipe was stopped, the capacity was reduced to less than 1/3. From this result, it can be seen that the combined use of the ejector nozzle and the notch nozzle mechanism is extremely effective.
【００１５】[0015]
【具体例２】 次に具体例１の装置を用い、吸込み口から切込み用輸送媒体吐出ノズル噴孔ま での垂直距離Ｌ(図1参照)を種々に変えて各種被輸送物の輸送を行ってみた。比 較のため切込み用輸送媒体吐出ノズルを作動させない場合も検討した。輸送媒体 としてはエジェクタノズルと切込み用輸送媒体吐出ノズルのいずれも圧縮エアを 使用した。被輸送物としては、粗粒砂利、細粒砂利、土砂および黒土を用い、輸 送状態のすぐれているものを◎、良好なものを○、良好ではないが輸送されてい るもの△、輸送状態の悪いものを×として評価した。その結果を表１に示す。表 １から明らかなように切込み用輸送媒体吐出ノズルを使用した場合に輸送状態は 良好であり、なかでも吸込み口から切込み用輸送媒体吐出ノズル噴孔までの垂直 距離Ｌを5〜30cmとした場合に良好ないしすぐれて良好であることがわかる。Specific Example 2 Next, using the apparatus of Specific Example 1, various kinds of transported objects are transported by changing the vertical distance L (see FIG. 1) from the suction port to the nozzle of the transport medium discharge nozzle for cutting. I tried. For comparison, we also examined the case where the transport medium discharge nozzle for cutting is not operated. Compressed air was used as the transport medium for both the ejector nozzle and the transport medium discharge nozzle for cutting. As the transported objects, coarse-grained gravel, fine-grained gravel, earth and sand and black soil are used, and those in excellent transport status are marked with ◎, good ones are marked with ○, but not good, are marked with △. The bad one was evaluated as x. The results are shown in Table 1. As is clear from Table 1, the transportation condition is good when the cutting medium discharge nozzle is used, especially when the vertical distance L from the suction port to the cutting medium discharge nozzle injection hole is 5 to 30 cm. It turns out that it is very good or excellent.
【００１６】[0016]
【表１】 [Table 1]
【００１７】[0017]
【具体例３】 次に具体例１の装置を用い、加圧輸送媒体として空気、真水、海水を使用し、 それらを種々組み合わせてエジェクタノズルと切込み用輸送媒体吐出ノズルに供 給した場合の粗粒砂利および砂の輸送状態を調べた。この試験は地上と水中の双 方で行い、吸込み口から切込み用輸送媒体吐出ノズル噴孔までの垂直距離Ｌを１ ０ｃｍとした。 なお比較例のため、エジェクタノズルに加圧輸送媒体を供給せず、切込み用輸 送媒体吐出ノズルのみに空気を供給して輸送してみた。その結果を表２に示す。 評価の基準は前記具体例２に準じた。この表２から本考案装置はいずれの輸送媒 体を使用しても効果的であることがわかる。[Specific Example 3] Next, using the apparatus of Specific Example 1, air, fresh water, and seawater were used as a pressurized transport medium, and various combinations of these were supplied to the ejector nozzle and the notch transport medium discharge nozzle. The transport state of granular gravel and sand was investigated. This test was conducted both on the ground and in water, and the vertical distance L from the suction port to the nozzle of the transport medium discharge nozzle for cutting was set to 10 cm. As a comparative example, it was attempted to supply air only to the notch transport medium discharge nozzle without feeding the pressurized transport medium to the ejector nozzle. The results are shown in Table 2. The evaluation standard was according to the above-mentioned specific example 2. From this Table 2, it can be seen that the device of the present invention is effective regardless of which transport medium is used.
【００１８】[0018]
【表２】 [Table 2]
【００１９】[0019]
以上説明した本考案によるときには、下端に吸込み口２を有するノズル本体１ に加圧輸送媒体を送り込むエジェクタノズル３を設けるとともに、該エジェクタ ノズル３よりも下方には噴射孔４１０を吸込み口２より下方の中心線上に向けた 複数対の切込み用輸送媒体吐出ノズル４１を設け、該切込み用輸送媒体吐出ノズ ル４１で被搬送物層内に加圧輸送媒体を切り込ませ衝突により上昇流を創成させ るようにしたので、流動性の悪いバラ物や粉粒状物を大量連続的に吸込み搬送す ることができ、構造も簡単で真空ポンプを要しないため安価に実施できるととも に、取扱いも容易であるなどのすぐれた効果が得られる。 According to the present invention described above, the ejector nozzle 3 for feeding the pressurized transport medium is provided in the nozzle body 1 having the suction port 2 at the lower end, and the injection hole 410 is located below the ejector nozzle 3 below the suction port 2. A plurality of pairs of notch transport medium discharge nozzles 41 directed toward the center line of the notch are provided, and the notch transport medium discharge nozzle 41 cuts the pressurized transport medium into the transported object layer to generate an upward flow by collision. Since it is possible to suck and convey a large amount of loose or powdery particles with poor fluidity continuously, the structure is simple and it does not require a vacuum pump, so it can be performed at low cost and is easy to handle. Excellent effect such as is obtained.
【図１】本考案による輸送用吸込みノズル装置の第１実
施例を示す縦断側面図である。FIG. 1 is a vertical sectional side view showing a first embodiment of a suction nozzle device for transportation according to the present invention.
【図２】図１のＩＩ−ＩＩ線に沿う断面図である。FIG. 2 is a sectional view taken along line II-II in FIG.
【図３】本考案の第２実施例を示す縦断側面図である。FIG. 3 is a vertical sectional side view showing a second embodiment of the present invention.
【図４】本考案の第３実施例を示す部分切欠側面図であ
る。FIG. 4 is a partially cutaway side view showing a third embodiment of the present invention.
【図５】実施例１を深礎基礎工事の掘削残土搬出に適用
した例を示す説明図である。FIG. 5 is an explanatory diagram showing an example in which Example 1 is applied to carrying out excavated residual soil for deep foundation work.
【図６】実施例３を深礎基礎工事の掘削残土搬出に適用
した例を示す説明図である。FIG. 6 is an explanatory diagram showing an example in which Example 3 is applied to carrying out excavated residual soil for deep foundation work.
１ ノズル本体 １ａ 剛性管部 １ｂ 可撓管部 ２ 吸込み口 ３ エゼクタノズル ４ 切込み用ノズル機構 ４０ 環状管 ４１ 切込み用輸送媒体吐出ノズル ４１０ 噴射孔 1 Nozzle body 1a Rigid tube part 1b Flexible tube part 2 Suction port 3 Ejector nozzle 4 Cutting nozzle mechanism 40 Annular tube 41 Transport medium discharging nozzle for cutting 410 410 Injection hole
Claims (6)
加圧輸送媒体を送りこむエジェクタノズル３を設けると
ともに、該エジェクタノズル３よりも下方には噴射孔４
１０をほぼ吸込み口中心線上に向けた複数対の切込み用
輸送媒体吐出ノズル４１を設け、該複数対の切込み用輸
送媒体吐出ノズル４１で被搬送物中に加圧輸送媒体を切
り込ませて上昇流を創成させるように構成したことを特
徴とする輸送用吸込みノズル装置。An ejector nozzle (3) for feeding a pressurized transport medium is provided in a nozzle body (1) having a suction port (2) at its lower end, and an injection hole (4) is provided below the ejector nozzle (3).
A plurality of pairs of notch transport medium discharge nozzles 41 are provided so that 10 is substantially aligned with the center line of the suction port, and the plurality of pairs of notch transport medium discharge nozzles 41 cut the pressurized transport medium into the object to be conveyed and ascend. A suction nozzle device for transportation, which is configured to generate a flow.
ｂとを有しているものを含む請求項１に記載の輸送用吸
込みノズル装置。2. A nozzle body 1 comprising a rigid tube portion 1a and a flexible tube portion 1
The suction nozzle device for transportation according to claim 1, including one having b.
いし５対である請求項１ないし請求項２に記載の輸送用
吸込みノズル装置。3. The suction nozzle device for transportation according to claim 1, wherein there are 2 to 5 pairs of the notch transportation medium discharge nozzles 41.
出ノズル４１への輸送媒体が同一種類のものである請求
項１ないし請求項３のいずれかに記載の輸送用吸込みノ
ズル装置。4. The transport suction nozzle device according to claim 1, wherein the transport mediums to the ejector nozzle 3 and the slit transport medium discharge nozzle 41 are of the same type.
出ノズル４１への輸送媒体が異なる種類のものである請
求項１ないし請求項３のいずれかに記載の輸送用吸込み
ノズル装置。5. The suction nozzle device for transportation according to claim 1, wherein the ejecting nozzle 3 and the transporting medium discharging nozzle 41 are of different types.
ス、窒素ガス、人工的に配合された気体、空気などの気
体から選択されたものである請求項１ないし請求項５の
いずれかに記載の輸送用吸込みノズル装置。6. The transport medium is selected from liquids such as seawater and fresh water, carbon dioxide gas, nitrogen gas, artificially mixed gas, and gas such as air. The suction nozzle device for transportation according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7153393U JPH0735554U (en) | 1993-12-09 | 1993-12-09 | Suction nozzle device for transportation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7153393U JPH0735554U (en) | 1993-12-09 | 1993-12-09 | Suction nozzle device for transportation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0735554U true JPH0735554U (en) | 1995-07-04 |
Family
ID=13463476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7153393U Pending JPH0735554U (en) | 1993-12-09 | 1993-12-09 | Suction nozzle device for transportation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0735554U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003529689A (en) * | 2000-04-05 | 2003-10-07 | ゲーテーオー−サブシー・アーエス | Underwater dredging method and apparatus |
| JP2006168852A (en) * | 2004-12-13 | 2006-06-29 | Akatake Engineering Kk | Device for sucking-out powder inside bag |
| JP2006348666A (en) * | 2005-06-17 | 2006-12-28 | Honmagumi:Kk | Underwater suction and conveying device, dredging method using the same, caisson filling material removal method, and sediment removal method in foundation pile |
| KR100960728B1 (en) * | 2009-11-17 | 2010-05-31 | 서울중공업(주) | Send transportation apparatus for inside of a harbor burying and beach erosion prevention |
| JP2011079611A (en) * | 2009-10-05 | 2011-04-21 | Ihi Transport Machinery Co Ltd | Cargo handling promoting device for tip nozzle of pneumatic unloader |
| CN107059972A (en) * | 2017-04-20 | 2017-08-18 | 广东和发输变电安装有限公司 | A kind of hydraulic pressure Work machine people system and management method |
| JP2023140553A (en) * | 2022-03-23 | 2023-10-05 | 東亜建設工業株式会社 | Pumping method and pumping system |
-
1993
- 1993-12-09 JP JP7153393U patent/JPH0735554U/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003529689A (en) * | 2000-04-05 | 2003-10-07 | ゲーテーオー−サブシー・アーエス | Underwater dredging method and apparatus |
| JP2006168852A (en) * | 2004-12-13 | 2006-06-29 | Akatake Engineering Kk | Device for sucking-out powder inside bag |
| JP2006348666A (en) * | 2005-06-17 | 2006-12-28 | Honmagumi:Kk | Underwater suction and conveying device, dredging method using the same, caisson filling material removal method, and sediment removal method in foundation pile |
| JP2011079611A (en) * | 2009-10-05 | 2011-04-21 | Ihi Transport Machinery Co Ltd | Cargo handling promoting device for tip nozzle of pneumatic unloader |
| KR100960728B1 (en) * | 2009-11-17 | 2010-05-31 | 서울중공업(주) | Send transportation apparatus for inside of a harbor burying and beach erosion prevention |
| CN107059972A (en) * | 2017-04-20 | 2017-08-18 | 广东和发输变电安装有限公司 | A kind of hydraulic pressure Work machine people system and management method |
| JP2023140553A (en) * | 2022-03-23 | 2023-10-05 | 東亜建設工業株式会社 | Pumping method and pumping system |
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