氣力輸送怎么輸送固體顆粒？固體顆粒在輸送管道中的運(yùn)動(dòng)涉及空氣速度的分布和固體和管壁之間的摩擦。輸送管內(nèi)固體顆粒的運(yùn)動(dòng)狀態(tài)為滾動(dòng)和懸浮。同時(shí)還發(fā)生固粒與固粒、固粒與壁面的碰撞，當(dāng)固體顆粒的旋轉(zhuǎn)也產(chǎn)生力時(shí)，完全考慮這些問(wèn)題是相當(dāng)復(fù)雜的。

　　How to transport solid particles by pneumatic conveying? The movement of solid particles in a conveying pipeline involves the distribution of air velocity and friction between the solid and the pipe wall. The motion state of solid particles inside the conveying pipe is rolling and suspended. At the same time, collisions between solid particles and solid particles, as well as between solid particles and walls, occur. When the rotation of solid particles also generates forces, fully considering these issues is quite complex.

　　長(zhǎng)期以來(lái)在這方面進(jìn)行了大量的研究。但仍有許多問(wèn)題沒(méi)有得到很好解決，例如在散裝物料在管道中被氣流帶走的過(guò)程中，固體相互碰撞并與管壁碰撞。碰撞導(dǎo)致固體顆粒破碎和管道磨損。這種情況在高速時(shí)顯得愈加明顯。

　　Extensive research has been conducted in this area for a long time. But there are still many problems that have not been well solved, such as solid collisions and collisions with the pipe wall during the process of bulk materials being carried away by airflow in the pipeline. Collisions cause solid particle breakage and pipeline wear. This situation becomes increasingly apparent at high speeds.

　　氣力輸送系統(tǒng)的設(shè)計(jì)不合理或系統(tǒng)偏離正常操作條件，則在輸送過(guò)程中可能出現(xiàn)堵塞現(xiàn)象。突發(fā)的堵塞，將影響比常生產(chǎn)；

　　If the design of the pneumatic conveying system is unreasonable or the system deviates from normal operating conditions, blockage may occur during the conveying process. Sudden blockages will affect normal production;

　　嚴(yán)重時(shí)將導(dǎo)致系統(tǒng)停止運(yùn)行，它影響正常生產(chǎn)和設(shè)備安全造成的經(jīng)濟(jì)損失。目前國(guó)內(nèi)外對(duì)管道堵塞的機(jī)理和堵塞的防治還沒(méi)有深入的研究。

　　In severe cases, it will cause the system to stop running, affecting normal production and equipment safety, resulting in economic losses. At present, there is no in-depth research on the mechanism and prevention of pipeline blockage both domestically and internationally.

　　現(xiàn)行的系統(tǒng)設(shè)計(jì)，一是采用經(jīng)驗(yàn)試湊的辦法，代價(jià)是提高運(yùn)行成本；二是不能采取積極的控制措施。當(dāng)堵塞發(fā)生后，為了消除堵塞采用暫停正常生產(chǎn)，沖氣消堵，還有一種去除氣體和中途堵塞的方法。但是操作的復(fù)雜性也提高了成本。

　　The current system design adopts a trial and error approach, which comes at the cost of increasing operating costs; Secondly, proactive control measures cannot be taken. After blockage occurs, in order to eliminate it, normal production is suspended, gas flushing is used to eliminate blockage, and there is also a method of removing gas and midway blockage. However, the complexity of the operation also increases the cost.

　　氣力輸送吸送特點(diǎn)

　　Characteristics of pneumatic conveying and suction

　　1:適用于從多處向一處集中輸送。進(jìn)料點(diǎn)可以是一個(gè)或多個(gè)，材料管可以裝載一個(gè)或多個(gè)分支管。多個(gè)進(jìn)給點(diǎn)的材料不僅可以依次輸送到卸載點(diǎn)，而且可以將多個(gè)進(jìn)給點(diǎn)的材料同時(shí)輸送到卸載點(diǎn)。

　　1: Suitable for centralized transportation from multiple locations to one location. The feeding point can be one or more, and the material pipe can be loaded with one or more branch pipes. Materials from multiple feed points can not only be sequentially transported to the unloading point, but also simultaneously transported to the unloading point.

　　2:在負(fù)壓作用下，這種材料很容易被吸入，料斗可打開(kāi)，可連續(xù)進(jìn)給和輸送。

　　2: Under negative pressure, this material is easily sucked in, and the hopper can be opened for continuous feeding and conveying.

　　3:物料在負(fù)壓下輸送，水容易被蒸發(fā)，所以含水量高的材料比壓力進(jìn)料更容易輸送，通過(guò)加熱提供的材料可以通過(guò)運(yùn)輸來(lái)冷卻。

　　3: Materials are transported under negative pressure, and water is easily evaporated. Therefore, materials with high water content are easier to transport than those fed under pressure. The materials provided by heating can be cooled through transportation.

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