JP2009102152A - Air levitation type conveyer belt - Google Patents
Air levitation type conveyer belt Download PDFInfo
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- JP2009102152A JP2009102152A JP2007277792A JP2007277792A JP2009102152A JP 2009102152 A JP2009102152 A JP 2009102152A JP 2007277792 A JP2007277792 A JP 2007277792A JP 2007277792 A JP2007277792 A JP 2007277792A JP 2009102152 A JP2009102152 A JP 2009102152A
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- 238000005339 levitation Methods 0.000 title claims abstract description 12
- 229920001971 elastomer Polymers 0.000 claims abstract description 44
- 239000005060 rubber Substances 0.000 claims abstract description 44
- 239000002344 surface layer Substances 0.000 claims abstract description 31
- 239000000203 mixture Substances 0.000 claims abstract description 28
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 26
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 26
- 229920001194 natural rubber Polymers 0.000 claims abstract description 26
- 239000005062 Polybutadiene Substances 0.000 claims abstract description 23
- 229920002857 polybutadiene Polymers 0.000 claims abstract description 23
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims description 17
- 239000000835 fiber Substances 0.000 claims description 13
- 230000009477 glass transition Effects 0.000 claims description 13
- 239000006229 carbon black Substances 0.000 claims description 4
- 241000872198 Serjania polyphylla Species 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 239000002759 woven fabric Substances 0.000 claims description 2
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 abstract description 22
- 239000008188 pellet Substances 0.000 abstract description 21
- 239000011521 glass Substances 0.000 abstract description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 239000000463 material Substances 0.000 description 11
- 239000003345 natural gas Substances 0.000 description 6
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000003949 liquefied natural gas Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Belt Conveyors (AREA)
- Structure Of Belt Conveyors (AREA)
Abstract
Description
本発明は、空気浮上式コンベヤベルトに関し、更に詳しくは、ガスハイドレートペレットのような−２０℃以下−５０℃超の温度の運搬物を円滑に搬送することができる空気浮上式コンベヤベルトに関する。 The present invention relates to an air-floating conveyor belt, and more particularly to an air-floating conveyor belt that can smoothly transport a material having a temperature of −20 ° C. or lower and −50 ° C. or higher, such as gas hydrate pellets.
近年、天然ガスの安全かつ経済的な輸送・貯蔵方法として、天然ガスを固体状の水和物であるガスハイドレートの形態にして取り扱う方法が注目されている。特に、海底に存在する中小規模の天然ガス田においては、製造プラント等に高額の初期投資を要するＬＮＧ（液化天然ガス）輸送が経済的に成り立たないため、固体状のガスハイドレート（以下、「ガスハイドレートペレット」という。）にして輸送することが有望視されている。 In recent years, attention has been paid to a method of handling natural gas in the form of gas hydrate, which is a solid hydrate, as a safe and economical method for transporting and storing natural gas. In particular, in small and medium-sized natural gas fields that exist on the sea floor, LNG (liquefied natural gas) transportation, which requires a large initial investment in a production plant or the like, is not economically viable, so a solid gas hydrate (hereinafter, “ It is considered promising to be transported as “gas hydrate pellets”.
このガスハイドレートペレットの輸送・貯蔵については、分解して天然ガスと原料水に戻ることを防ぐため、常圧下で−２０℃以下−５０℃超の低温に保持したまま輸送・貯蔵する必要がある。そのため輸送方法としては、温度制御が可能で、かつ分解して天然ガスが発生した場合でも安全に輸送ができるという理由から、特許文献１のように、円筒状のフレーム内にコンベヤベルトを挿入し、そのコンベヤベルトの下側から圧縮空気を吹き付けて浮上させつつ運搬物を搬送する、いわゆる空気浮上式ベルトコンベヤの使用が検討されている。 As for transportation and storage of this gas hydrate pellet, it is necessary to transport and store it while keeping it at a low temperature of −20 ° C. or lower and −50 ° C. or lower under normal pressure in order to prevent it from decomposing and returning to natural gas and raw water. is there. Therefore, as a transportation method, a conveyor belt is inserted into a cylindrical frame as in Patent Document 1 because temperature can be controlled and transportation can be performed safely even when natural gas is generated by decomposition. The use of a so-called air levitation belt conveyor that conveys a conveyed product while blowing the compressed air from the lower side of the conveyor belt has been studied.
しかし、従来の空気浮上式ベルトコンベヤでは、ガスハイドレートペレットのような−２０℃以下−５０℃超の温度の運搬物を搬送すると、コンベヤベルトのゴム硬度が高くなって幅方向の剛性が過剰に大きくなるため、無負荷運転時にコンベヤベルトが異常に浮上して運転が困難になるという問題があった。このような問題を解決するには、コンベヤベルトを耐寒性のゴム組成物から構成することが考えられるが、一般に耐寒性のゴム組成物は粘着性を有するため、ベルトの耳部が円筒状フレームの内面と摺動接触すると、コンベヤベルトがフレームに粘着してベルトコンベヤの円滑な運転を妨げてしまうという問題があった。
本発明の目的は、ガスハイドレートペレットのような−２０℃以下−５０℃超の温度の運搬物を円滑に搬送することを可能にする空気浮上式コンベヤベルトを提供することにある。 An object of the present invention is to provide an air-floating type conveyor belt that makes it possible to smoothly convey a material having a temperature of −20 ° C. or lower and −50 ° C. or higher, such as gas hydrate pellets.
上記の目的を達成する第１の本発明の空気浮上式コンベヤベルトは、円筒状フレームの内側にコンベヤベルトを挿入し、該コンベヤベルトの下側から圧縮空気を吹き付けて浮上させつつ、上面側に−２０℃以下−５０℃超の運搬物を載せて搬送する空気浮上式コンベヤベルトにおいて、前記コンベヤベルトを上下２層構造にすると共に、上面層を天然ゴムとブタジエンゴムとを主成分とするガラス転移温度Ｔｇが−５０℃以下の第１のゴム組成物で構成し、下面層を天然ゴムとスチレン・ブタジエンゴムとを主成分とする第２のゴム組成物で構成したことを特徴とする。 The air levitation conveyor belt according to the first aspect of the present invention that achieves the above-mentioned object inserts the conveyor belt inside the cylindrical frame, blows the compressed air from the lower side of the conveyor belt, and floats it on the upper surface side. In an air levitation conveyor belt that carries a transported object of −20 ° C. or less and over −50 ° C., the conveyor belt is made of a two-layer structure, and the upper surface layer is a glass mainly composed of natural rubber and butadiene rubber. It is characterized in that it is composed of a first rubber composition having a transition temperature Tg of −50 ° C. or lower, and the bottom layer is composed of a second rubber composition mainly composed of natural rubber and styrene / butadiene rubber.
前記第１のゴム組成物のゴム成分は、天然ゴム５０〜８０質量％、ブタジエンゴム５０〜２０質量％からなることが望ましく、更にゴム成分１００質量部に対してカーボンブラックを４０〜８０質量部配合するのがよい。 The rubber component of the first rubber composition is preferably composed of 50-80% by mass of natural rubber and 50-20% by mass of butadiene rubber, and 40-80 parts by mass of carbon black with respect to 100 parts by mass of the rubber component. It is good to mix.
前記第２のゴム組成物のゴム成分は、天然ゴム２０〜７５質量％、スチレン・ブタジエンゴム８０〜２５質量％からなることが望ましく、更にゴム成分１００質量部に対してカーボンブラックを５５〜９５質量部配合するのがよい。 The rubber component of the second rubber composition is preferably composed of 20 to 75% by mass of natural rubber and 80 to 25% by mass of styrene / butadiene rubber. Further, 55 to 95% of carbon black is added to 100 parts by mass of the rubber component. It is better to blend in parts by mass.
上記の目的を達成する第２の本発明の空気浮上式コンベヤベルトは、円筒状フレームの内側にコンベヤベルトを挿入し、該コンベヤベルトの下側から圧縮空気を吹き付けて浮上させつつ、上面側に−２０℃以下−５０℃超の運搬物を載せて搬送する空気浮上式コンベヤベルトにおいて、前記コンベヤベルトを上下２層構造にすると共に、上面層を天然ゴムとブタジエンゴムとを主成分とするガラス転移温度Ｔｇが−５０℃以下の第１のゴム組成物で構成し、下面層を繊維シートで構成したことを特徴とするものである。 The air levitation conveyor belt according to the second aspect of the present invention that achieves the above object includes inserting a conveyor belt inside a cylindrical frame and blowing the compressed air from the lower side of the conveyor belt to raise the conveyor belt. In an air levitation conveyor belt that carries a transported object of −20 ° C. or less and over −50 ° C., the conveyor belt is made of a two-layer structure, and the upper surface layer is a glass mainly composed of natural rubber and butadiene rubber. The transition temperature Tg is composed of a first rubber composition having a temperature of −50 ° C. or lower, and the lower surface layer is composed of a fiber sheet.
前記繊維シートは、織物又は編物であることが望ましい。 The fiber sheet is preferably a woven fabric or a knitted fabric.
なお、「ガラス転移温度Ｔｇ」は、ＪＩＳ Ｋ７１２１−1987 に準拠し、示差熱分析機器を用いて２０℃／分の昇温温度で熱流速の変化を測定した時に得られる曲線において、変曲点を読み取った値である。 “Glass transition temperature Tg” is an inflection point in a curve obtained when a change in heat flow rate is measured at a heating temperature of 20 ° C./min using a differential thermal analyzer in accordance with JIS K7121-1987. Is the value read.
本発明のうち第１発明によれば、コンベヤベルトを上下２層構造にすると共に、上面層を天然ゴムとブタジエンゴムとを主成分とするガラス転移温度Ｔｇが−５０℃以下の第１のゴム組成物で構成し、下面層を天然ゴムとスチレン・ブタジエンゴムとを主成分とする第２のゴム組成物で構成したので、ガスハイドレートペレットのような−２０℃以下−５０℃超の温度の運搬物であっても、上面層のガラス転移温度が−５０℃以下であるので、コンベヤベルトの幅方向の剛性は過剰に大きくならず、かつ下面層が天然ゴムとスチレン・ブタジエンゴムを主成分とすることにより、コンベヤベルトがフレームと摺動接触した場合でも、フレームにゴムが粘着することがないため、ガスハイドレートペレットのような−２０℃以下−５０℃超の温度の運搬物を円滑に搬送することができる。 According to the first invention of the present invention, the conveyor belt has a two-layer structure of the upper and lower layers, and the upper surface layer is a first rubber having a glass transition temperature Tg of -50 ° C. or less, mainly composed of natural rubber and butadiene rubber. Since it is composed of the composition and the bottom layer is composed of the second rubber composition mainly composed of natural rubber and styrene-butadiene rubber, a temperature of −20 ° C. or lower and −50 ° C. or higher like gas hydrate pellets. Since the glass transition temperature of the upper surface layer is −50 ° C. or lower, the conveyor belt does not have excessive rigidity in the width direction, and the lower surface layer is mainly made of natural rubber and styrene-butadiene rubber. Since the rubber does not stick to the frame even when the conveyor belt is in sliding contact with the frame, the temperature is lower than -20 ° C or lower than -50 ° C like gas hydrate pellets. It can carry the transported article smoothly.
第２発明によれば、前記コンベヤベルトを上下２層構造にすると共に、上面層を天然ゴムとブタジエンゴムとを主成分とするガラス転移温度Ｔｇが−５０℃以下の第１のゴム組成物で構成し、下面層を繊維シートで構成したので、ガスハイドレートペレットのような−２０℃以下−５０℃超の温度の運搬物であっても、上面層のガラス転移温度が−５０℃以下であるので、コンベヤベルトの幅方向の剛性は過剰に大きくならず、かつ繊維シートがフレームと下面層との間の摩擦係数を低減することにより、コンベヤベルトがフレームと摺動接触した場合でもフレームにゴムが粘着することがないため、−２０℃以下の温度の運搬物を円滑に搬送することができる。 According to the second invention, the conveyor belt is made of a first rubber composition having an upper and lower two-layer structure, and an upper surface layer having a glass transition temperature Tg of -50 ° C. or less mainly composed of natural rubber and butadiene rubber. Since the bottom layer is composed of a fiber sheet, the glass transition temperature of the top layer is −50 ° C. or less, even for a transported material having a temperature of −20 ° C. or less −50 ° C. or more like gas hydrate pellets. As a result, the rigidity of the conveyor belt in the width direction is not excessively increased, and the fiber sheet reduces the coefficient of friction between the frame and the bottom layer, so that even when the conveyor belt is in sliding contact with the frame, Since rubber does not stick, it is possible to smoothly transport a transported material having a temperature of -20 ° C or lower.
以下に、本発明の実施の形態について、図面を参照して説明する。 Embodiments of the present invention will be described below with reference to the drawings.
図１は、ガスハイドレートペレットを搬送する空気浮上式ベルトコンベヤの一例を示す。 FIG. 1 shows an example of an air-floating belt conveyor that conveys gas hydrate pellets.
この空気浮上式ベルトコンベヤは、円筒状の金属製のフレーム１の内部を、空気浮上式コンベヤベルト２（以下、単に「コンベヤベルト」という。）がフレームに沿って浮上しつつガスハイドレートペレット３を搬送するものである。フレーム１の下部には、長手方向に沿って多数の空気孔４が設けられており、図示しないコンプレッサーから圧縮空気５を送風してコンベヤベルト２の裏面に吹き付けることにより、コンベヤベルト２を浮上させるようになっている。コンベヤベルト２の幅方向はフレーム１の下部内面に沿って湾曲しており、その長手方向は図示しない電動機により回転駆動される一対のプーリに掛け回されている。ガスハイドレートペレット３の搬送時には、フレーム１の内部を−２０℃以下−５０℃超の温度に維持すると共に、窒素などの不活性ガスを循環させることにより、ガスハイドレートペレット３の分解を抑制し、かつ分解して天然ガスが発生した場合でも燃焼等させることなく容易に除去することができるようになっている。 This air levitation belt conveyor has an air levitation conveyor belt 2 (hereinafter simply referred to as a “conveyor belt”) that floats along the frame inside a cylindrical metal frame 1 and gas hydrate pellets 3. Are to be transported. A number of air holes 4 are provided in the lower part of the frame 1 along the longitudinal direction, and the conveyor belt 2 is floated by blowing compressed air 5 from a compressor (not shown) and blowing it to the back surface of the conveyor belt 2. It is like that. The width direction of the conveyor belt 2 is curved along the lower inner surface of the frame 1, and the longitudinal direction is wound around a pair of pulleys that are rotationally driven by an electric motor (not shown). During transportation of the gas hydrate pellet 3, the inside of the frame 1 is maintained at a temperature of −20 ° C. or lower and higher than −50 ° C., and an inert gas such as nitrogen is circulated to suppress decomposition of the gas hydrate pellet 3 In addition, even when natural gas is generated by decomposition, it can be easily removed without burning.
図２は、第１発明の実施形態からなる空気浮上式コンベヤベルトの例を示す。 FIG. 2 shows an example of an air floating conveyor belt according to the embodiment of the first invention.
この空気浮上式コンベヤベルト２（以下、単に「コンベヤベルト」という。）は、ガスハイドレートペレット３と接する搬送面を形成する上面層６、圧縮空気が吹き付けられる下面層７、及びそれらの間に配置された補強層８を備えた上下２層の構成を有する。 The air floating conveyor belt 2 (hereinafter simply referred to as “conveyor belt”) includes an upper surface layer 6 that forms a conveying surface in contact with the gas hydrate pellets 3, a lower surface layer 7 to which compressed air is blown, and a gap between them. It has a configuration of two layers, upper and lower, provided with the reinforcing layer 8 arranged.
このようなコンベヤベルトにおいて、上面層６は、天然ゴム（ＮＲ）とブタジエンゴム（ＢＲ）とを主成分とし、かつガラス転移温度Ｔｇが−５０℃以下となるゴム組成物から構成されている。このゴム組成物のゴム成分は、天然ゴムが５０〜８０質量％で、ブタジエンゴムが５０〜２０質量％以上とすることが望ましい。 In such a conveyor belt, the upper surface layer 6 is composed of a rubber composition mainly composed of natural rubber (NR) and butadiene rubber (BR) and having a glass transition temperature Tg of −50 ° C. or lower. The rubber component of the rubber composition is desirably 50 to 80% by mass of natural rubber and 50 to 20% by mass or more of butadiene rubber.
また、下面層７は、天然ゴムとスチレン・ブタジエンゴム（ＳＢＲ）のみを主成分とし、ブタジエンゴムを含有しないゴム組成物から構成される。ブタジエンゴムを含有しないことにより、ゴム組成物は低い粘着性を有するようになる。このゴム組成物のゴム成分は、天然ゴムが２０〜７５質量％であり、スチレン・ブタジエンゴムが２５〜８０質量％とすることが望ましい。（特開２００５−１３９３４４号公報を参照）。 The lower surface layer 7 is composed of a rubber composition containing only natural rubber and styrene-butadiene rubber (SBR) as main components and not containing butadiene rubber. By not containing butadiene rubber, the rubber composition has low tackiness. The rubber component of the rubber composition is preferably 20 to 75% by mass of natural rubber and 25 to 80% by mass of styrene / butadiene rubber. (See JP 2005-139344 A).
このように上面層６を天然ゴムとブタジエンゴムを主成分とするガラス転移温度Ｔｇが−５０℃以下のゴム組成物から構成すると共に、下面層７を天然ゴムとスチレン・ブタジエンゴムを主成分とするゴム組成物から構成したことにより、ガスハイドレートペレット３のような−２０℃以下−５０℃超の温度の運搬物であっても、上面層６のガラス転移温度が−５０℃以下であるので、コンベヤベルト２の幅方向の剛性は過剰に大きくならず、かつ下面層７が天然ゴムとスチレン・ブタジエンゴムを主成分としているので、コンベヤベルト２がフレーム１と摺動接触した場合でも、フレーム１にゴムが粘着することがないため、ガスハイドレートペレット３のような−２０℃以下−５０℃超の温度の運搬物を円滑に搬送することができる。 Thus, the upper surface layer 6 is composed of a rubber composition having a glass transition temperature Tg of -50 ° C. or less, which is mainly composed of natural rubber and butadiene rubber, and the lower surface layer 7 is composed of natural rubber and styrene / butadiene rubber as main components. Even if it is a transported material having a temperature of −20 ° C. or lower and −50 ° C. or higher, such as the gas hydrate pellet 3, the glass transition temperature of the upper surface layer 6 is −50 ° C. or lower. Therefore, the rigidity in the width direction of the conveyor belt 2 is not excessively increased, and the lower surface layer 7 is mainly composed of natural rubber and styrene / butadiene rubber. Therefore, even when the conveyor belt 2 is in sliding contact with the frame 1, Since the rubber does not stick to the frame 1, it is possible to smoothly transport a transported material having a temperature of −20 ° C. or lower and −50 ° C. or higher like the gas hydrate pellet 3.
図３は、第２発明の実施形態からなる空気浮上式コンベヤベルトの例を示す。 FIG. 3 shows an example of an air floating conveyor belt according to the embodiment of the second invention.
このコンベヤベルト２は、上面層６を天然ゴムとブタジエンゴムを主成分とするガラス転移温度が−５０℃以下となるゴム組成物から構成すると共に、下面層を繊維シート９から構成したものである。補強層８は、上面層６内に埋設される。このような下面層は、未加硫状態の上面層６の下面に繊維シート９を貼り付け、加硫工程において金型等で加圧することにより形成することができる。従って、繊維シート９は、天然ゴムとブタジエンゴムからなるゴム組成物の加硫温度である約１８０℃で溶融しないように、ナイロン又はポリエステルを用いることが好ましい。また、繊維シートの形状は、織物又は編物とすることが望ましい。 In this conveyor belt 2, the upper surface layer 6 is made of a rubber composition whose main component is natural rubber and butadiene rubber and the glass transition temperature is -50 ° C. or lower, and the lower surface layer is made of a fiber sheet 9. . The reinforcing layer 8 is embedded in the upper surface layer 6. Such a lower surface layer can be formed by attaching the fiber sheet 9 to the lower surface of the unvulcanized upper surface layer 6 and pressurizing it with a mold or the like in the vulcanization process. Therefore, it is preferable to use nylon or polyester for the fiber sheet 9 so as not to melt at about 180 ° C., which is the vulcanization temperature of a rubber composition composed of natural rubber and butadiene rubber. The shape of the fiber sheet is preferably woven or knitted.
このように、上面層６を、天然ゴムとブタジエンゴムを主成分とするガラス転移温度Ｔｇが−５０℃以下のゴム組成物から構成すると共に、下面層を繊維シート９から構成したことにより、ガスハイドレートペレット３のような−２０℃以下−５０℃超の温度の運搬物であっても、上面層６のガラス転移温度が−５０℃以下であるので、コンベヤベルト２の幅方向の剛性は過剰に大きくならず、かつ繊維シート９がフレーム１とコンベヤベルト２との間の摩擦係数を低減するので、コンベヤベルト２がフレーム１と摺動接触した場合でも、フレーム１にゴムが粘着することがないため、ガスハイドレートペレット３のような−２０℃以下−５０℃超の温度の運搬物を円滑に搬送することができる。 As described above, the upper surface layer 6 is composed of a rubber composition having a glass transition temperature Tg of -50 ° C. or less, which is mainly composed of natural rubber and butadiene rubber, and the lower surface layer is composed of the fiber sheet 9, thereby providing a gas. Even in the case of a transported material having a temperature of −20 ° C. or lower and −50 ° C. or higher like the hydrate pellet 3, since the glass transition temperature of the upper surface layer 6 is −50 ° C. or lower, the rigidity in the width direction of the conveyor belt 2 is Since the fiber sheet 9 does not become excessively large and the coefficient of friction between the frame 1 and the conveyor belt 2 is reduced, the rubber sticks to the frame 1 even when the conveyor belt 2 is in sliding contact with the frame 1. Therefore, a transported material having a temperature of -20 ° C. or lower and −50 ° C. or higher like the gas hydrate pellet 3 can be smoothly transported.
以上に説明した第１及び第２発明の実施形態における補強層８の材料及び形状は特に限定するものではなく、材料としてはポリエステル、ポリアミド及びアラミド繊維が、形状としては帆布及びスチールコードがコンベヤベルトの長手方向に埋設された形状が、それぞれ例示される。 The material and shape of the reinforcing layer 8 in the embodiments of the first and second inventions described above are not particularly limited, and the material is polyester, polyamide and aramid fiber, and the shape is canvas and steel cord as a conveyor belt. Each of the shapes embedded in the longitudinal direction is exemplified.
１ フレーム
２ 空気浮上式コンベヤベルト
３ ガスハイドレートペレット
４ 空気孔
５ 圧縮空気
６ 上面層
７ 下面層
８ 補強層
９ 繊維シート
1 Frame 2 Air-floating conveyor belt 3 Gas hydrate pellet 4 Air hole 5 Compressed air 6 Upper surface layer 7 Lower surface layer 8 Reinforcing layer 9 Fiber sheet
Claims (7)
前記コンベヤベルトを上下２層構造にすると共に、上面層を天然ゴムとブタジエンゴムとを主成分とするガラス転移温度Ｔｇが−５０℃以下の第１のゴム組成物で構成し、下面層を天然ゴムとスチレン・ブタジエンゴムとを主成分とする第２のゴム組成物で構成した空気浮上式コンベヤベルト。 An air levitation type in which a conveyor belt is inserted inside a cylindrical frame, and compressed air is blown from the lower side of the conveyor belt to float and a transported object of −20 ° C. or lower and −50 ° C. or higher is placed on the upper surface side and conveyed. In the conveyor belt,
The conveyor belt has an upper and lower two-layer structure, and the upper surface layer is composed of a first rubber composition whose main component is natural rubber and butadiene rubber and has a glass transition temperature Tg of −50 ° C. or lower, and the lower surface layer is natural. An air-floating conveyor belt composed of a second rubber composition mainly composed of rubber and styrene-butadiene rubber.
前記コンベヤベルトを上下２層構造にすると共に、上面層を天然ゴムとブタジエンゴムとを主成分とするガラス転移温度Ｔｇが−５０℃以下の第１のゴム組成物で構成し、下面層を繊維シートで構成した空気浮上式コンベヤベルト。 An air levitation type in which a conveyor belt is inserted inside a cylindrical frame, and compressed air is blown from the lower side of the conveyor belt to float and a transported object of −20 ° C. or lower and −50 ° C. or higher is placed on the upper surface side and conveyed. In the conveyor belt,
The conveyor belt has an upper and lower two-layer structure, and the upper surface layer is composed of a first rubber composition whose main component is natural rubber and butadiene rubber and has a glass transition temperature Tg of −50 ° C. or lower, and the lower surface layer is made of fiber. Air floating conveyor belt composed of sheets.
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| JP2019056047A (en) * | 2017-09-20 | 2019-04-11 | 横浜ゴム株式会社 | Rubber composition for air flotation type conveyor belt and air flotation type conveyor belt |
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| JP3051825U (en) * | 1998-02-25 | 1998-09-02 | 三ツ星ベルト株式会社 | Resin conveyor belt |
| JP2000062927A (en) * | 1998-08-25 | 2000-02-29 | Bando Chem Ind Ltd | Air floating type carrying belt |
| JP2002211725A (en) * | 2000-11-20 | 2002-07-31 | Bridgestone Corp | Rubber composition for belt of air floating type belt conveyor, belt and air floating type belt conveyor |
| JP2002302223A (en) * | 2001-03-30 | 2002-10-18 | Ube Machinery Corporation Ltd | Flow dynamics conveyor |
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| JP2019056047A (en) * | 2017-09-20 | 2019-04-11 | 横浜ゴム株式会社 | Rubber composition for air flotation type conveyor belt and air flotation type conveyor belt |
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