一、結(jié)構(gòu)：管狀輸送帶芯體以高強(qiáng)力帆布或鋼絲繩為骨架，配以高強(qiáng)度高耐磨優(yōu)質(zhì)膠料為上下覆蓋層，工作時(shí)膠帶由平面漸變U形，最后卷成管狀以實(shí)行封閉式輸送。
二、用途：廣泛應(yīng)用于冶金、電力、化工、港口、碼頭、建材、煤炭、礦山、糧食等行業(yè)散狀物料的密閉輸送。具有耐磨、耐熱、耐寒、耐化學(xué)腐蝕、阻燃、抗靜電等多種類型。
三、特點(diǎn)
1、為使膠帶運(yùn)行時(shí)呈圓管狀，管狀帶本身具有適當(dāng)?shù)臋M向剛性，可保證良好的管狀保持性和密封性；
2、帶體具有良好的彈性和縱向柔韌性，使帶子能反復(fù)、長(zhǎng)期的經(jīng)受劇烈的彎曲和收縮；
3、帶子具有優(yōu)良的物理機(jī)械性能。因管狀帶運(yùn)輸物料時(shí)，其帶體拉伸，覆蓋膠長(zhǎng)期受日光照射及風(fēng)吹雨淋，因此，要求外覆蓋膠具有較高的耐候、耐臭氧、耐紫外線、耐屈撓龜裂等性能，而內(nèi)覆蓋膠則應(yīng)具有優(yōu)良的耐磨性能。
4、由于管狀帶的特殊結(jié)構(gòu)，使之在運(yùn)輸過(guò)程中呈管狀密閉運(yùn)送粉狀物料，能有效的防止粉塵飛揚(yáng)、灑落。不僅避免對(duì)環(huán)境造成污染、物料浪費(fèi)，而且能防止物料受日曬、風(fēng)吹、雨淋，保證被輸送物料的質(zhì)量。
5、采用管狀輸送帶運(yùn)輸，物料被包裹在膠帶里，增大了物料與膠帶的接觸面積和物料的內(nèi)摩擦角，從而可提高輸送機(jī)輸送物料的傾角。普通帶是輸送機(jī)的傾角僅為22°，而管狀輸送機(jī)的傾角可達(dá)30°以上，輸送機(jī)傾角增大，可縮短輸送機(jī)的水平距離，節(jié)省投資。
6、采用管狀帶運(yùn)輸，帶子呈管狀后可以水平、垂直或曲線運(yùn)行，運(yùn)輸線路可以在一定范圍內(nèi)按空間布置，無(wú)須設(shè)中間轉(zhuǎn)運(yùn)站，因而，節(jié)省建設(shè)投資。
7、管狀帶運(yùn)輸避免了跑偏，運(yùn)行可靠，提高輸送效率，具有更好的經(jīng)濟(jì)效益和更低的運(yùn)行成本。
8、管狀帶輸送物料，在卸料后的回程段也可輸送物料，即雙向運(yùn)料。這是普通輸送帶無(wú)法做到的。由于反程也呈管狀，不會(huì)灑落物料，因此全系統(tǒng)無(wú)污染，不須清掃費(fèi)用。
I. Construction
The belt core of tubular conveyor belt takes high-strength canvas or steel cable as its carcass in combination with high-strength high abrasion-resistance high-quality rubber as the top and bottom rubber cover, during the operation, the rubber belt is changed gradually from flat plane to U shape and finally is rolled into tubular shape so as to achieve enclosed conveying.
II. Application
It is widely applied in enclosed conveying of bulk materials in the sectors as of metallurgy, electric power, chemical engineering, harbor, wharf, building materials, coal, mine, grains etc. It has multiple types such as abrasion-resistant, heat-resistant, cold-resistant, corrosion-resistant, flame-resistant, antistatic etc.
III. Features
1. In order to make the rubber belt takes on circular tubular shape, the tubular belt itself has appropriate transverse rigidness, which can ensure good retention and seal of tubular shape.
2. The belt body has good elasticity and longitudinal flexibility, making the belt able to tolerate repeated and long-time violent bending and shrinkage;
3. The belt has excellent physical and mechanical properties. Because when the tubular belt is conveying material, its belt body is stretched, and the cover rubber is long exposed to sunshine and weather, therefore, it is required that the outer cover rubber has higher resistance to weather, ozone, ultraviolet rays, flexure, cracking etc., while inner cover rubber should have excellent abrasion resistance.
4. Because of special structure of tubular belt, it conveys powdery material in tubular closed condition during the conveying, thus it can effectively prevent dust fly and spill. This not only avoids pollution to the environment and material wastage, but also can prevent exposure of material to sunshine, wind and rain, thus ensuring the quality conveyed material.
5. By adopting tubular conveyor belt for conveying, the material is wrapped in the rubber belt, this increasing the area of contact between material and rubber belt and internal friction angle of material, thus can increase the inclination angle of material conveying of the conveyor. Ordinary conveyor belt only has 22° inclination angle, whereas that of tubular conveyor can reach over 30°, therefore, increased inclination angle of conveyor can shorten the horizontal distance of the conveyor and save investment.
6. With tubular belt adopted for conveying, after the belt presents tubular shape, it can run horizontally, vertically or curvilinearly, the conveying line can be arranged according to the space within a certain range without setting intermediate transfer station, therefore, construction investment can be saved.
7. Tubular belt conveying avoids bias with reliable running, improved conveying efficiency and better economic benefit and lower running cost.
8. With tubular belt for conveying material, the return run after discharge can also convey material, i.e. two-way conveying. This can not be achieved with ordinary conveyor belt. Because the return belt also presents tubular shape without material spill, there is no contamination and cleaning cost for the complete system.