MC20埋刮板输送机设计

摘要

刮板输送机是输送粉尘状、小颗粒及小块等散状物料的连续输送设备，可以水平、倾斜和垂直输送。MC即指垂直型输送机，由于输送时，刮板链条全被埋在物料之中，故称为MC埋刮板输送机；又因为埋刮板机槽宽是200mm所以称为MC20型刮板输送机。输送物料具有内擦力和侧压力等特性。垂直输送时，主要依赖物料所具有的起拱特性。封闭机槽内的物料在受到刮板链条在运动方向的推力，且受到下部不断的给料而阻止上物料下滑的阻力时，产生横向阻力时，产生横向侧压力，从而增加物料的内摩擦力，当物料之间的内摩擦力大于物料和侧壁间的外摩擦力及物料自重时，物料就随刮板链条在运动中有振动，有些物料的料拱会时而形成，因而使物料在输送过程中对于链条产生一种滞后现象，影响输送能力。埋刮板输送机主要由封闭断面的壳体（机槽）、刮板链条、驱动装置及张紧装置等部件组成。其设备结构简单、体积小、密封性能好、安装维修比较方便；能多点加料、多点卸料，工艺选型及布置较为灵活；在输送飞扬性、有毒、高温、易燃易爆的物料时，可改善工作条件，减少环境污染。埋刮板输送机目前已被广泛应用于化工、建材、冶金、电力、粮食、轻工和交通领域。MC型埋刮板输送机是采用倾斜度较大或垂直的布置一中刮板输送机，其倾角一般为30。≤a≤90。。单台设备的输送高度不大于30m。

关键词：输送料拱内摩擦力外摩擦力侧压力

Abstract

Scraper conveyor is continuous conveying equipment for conveying powder dust, small particles and small pieces of bulk materials such as, can level, tilt and vertical transmission. MC refers to the vertical conveyor, the conveyor, scraper chains are buried in the material, so called MC scraper conveyor; and because the buried scraper slot width is 200mm so called MC20 type scraper conveyor. Has the friction and side pressure and characteristics of transportation of materials. The vertical transport, which mainly rely on materials of arch characteristics. Sealing machine groove material in by the scraper chain in the direction of movement of thrust, and by continuous feeding and lower prevent materials from falling resistance, the lateral resistance, the lateral pressure, thereby increasing the internal friction of the material, when the friction force and friction between the material weight material than the material and the side between the walls, the material with the scraper chain in the motion of a vibration, some material material arch will sometimes form, so that the material in the conveying process for chain produces a hysteresis phenomenon, affecting transmission capacity. Buried scraper conveyor is mainly composed of a casing closing section (slot machines), the scraper chain, driving device and the tensioning device and other components. The device has the advantages of simple structure, small volume, good sealing performance, convenient installation repair; can feeding, multiple points discharging, process selection and layout of the more flexible; in transport flying, high temperature, toxic, flammable and explosive materials, can improve working conditions, reduce environmental pollution. Buried scraper conveyor has been widely used in chemical industry, building materials, metallurgy, power, food, light industry and transport. MC type buried scraper conveyor is used for larger inclined or vertical a scraper conveyor, the dip angle is 30. ≤ a ≤ 90.. Conveying equipment height not more than 30m.

Keywords: feeding arch internal friction friction lateral pressure