【正文】 制造的齒輥破碎機共有13種規(guī)格，最小型的齒輥破碎機，驅(qū)動功率為237，其生產(chǎn)能力為150～200，產(chǎn)品粒度為50；最大型齒輥破碎機，驅(qū)動功率為2600，生產(chǎn)能力為2400～3000，產(chǎn)品粒度為300～400。該公司制造的沖擊式破碎機，有18種規(guī)格。捷克Pragoinvest公司制造8種規(guī)格的OKD型沖擊式錘式破碎機，用于破碎生產(chǎn)率高，破碎比也大。這種破碎機采用了液壓控制系統(tǒng)，在破碎機的后部排料口處裝有格篩和用于拆卸與安裝破碎錘的液壓裝置。澳大利亞VoestAlpine公司制造兩種型式的雙輥破碎機。該公司制造的Sand破碎機適用于破碎比大的場合。該機由上部集中給料，物料向剛性破碎腔壁方向運動。破碎與破碎機械本文主要論述了破碎的基本概念，介紹了常用的破碎機械的原理和技術(shù)、破碎機械的使用范圍和選擇，對雙輥式破碎機作了詳細的敘述，并介紹了破碎機的使用。它表示破碎后原料減小的程度。英美以物料80％能通過篩孔的篩孔寬度為最大粒度直徑，原蘇聯(lián)以物料的95％能通過篩孔的篩孔寬度為最大粒度的直徑。值得指出，某些破碎機、其排料粒度不是由排料口大小來決定的。篩上物料進入旋回破碎機2里、經(jīng)過破碎后，所得產(chǎn)品與1號篩下物料都落到振動篩3上，經(jīng)篩分后，篩上物料進入中碎圓錐破碎機(簡稱中碎機)，篩下物料落到振動篩5上。篩上不合格的物料進入細碎機6，其產(chǎn)品返回到振動篩5，而篩下合格品落入料倉7里，然后進入球磨機8。中碎機為二段破碎(二次破碎)，細碎機為三段破碎(三次破碎)。劈裂的原因是由于劈裂平面上的拉應(yīng)力達到或超過物料拉伸強度極限。當(dāng)物料的彎曲應(yīng)力達到物料的彎曲強度時，即被折斷而破碎。破碎機一般處理較大塊的物料，產(chǎn)品粒度較粗，通常大于8。其結(jié)構(gòu)特征是破碎部件(或介質(zhì))互相接觸，所采用的介質(zhì)是鋼球、鋼棒、礫石或礦塊等。 (1) 鄂式破碎機(老虎口)破碎作用是靠可動鄂板周期性地壓向固定鄂板，將夾在其中的礦塊壓碎。屬于這一類的又可分為：錘碎機；籠式破碎機；反擊式破碎機。 C、離心磨礦機：利用高速旋轉(zhuǎn)部件和介質(zhì)產(chǎn)生產(chǎn)離心力來完成破碎作用。 4 雙輥破碎機的具體介紹雙輥破碎機適用于在水泥、化工、電力、冶金、建材、耐火材料等工業(yè)部門破碎中等硬度的物料，如石灰石，爐渣 ，焦炭，煤等物料的中碎，細碎作業(yè)。 5 破碎機的使用正確的使用與維護破碎機，對提高處理能力、延長其使用壽命是很重要的，也是安全生產(chǎn)所必須的。對一些大型破碎機，有時還須借助外力起動。破碎機的給料必須是連續(xù)均勻的，防止過載，而且在整個給料口寬度上給料量應(yīng)一致，這樣可使破碎機受到的磨碎均勻，相對地延長易磨損零件的壽命。3) 破碎機工作時的檢查及看護。4) 破碎機停車前，應(yīng)先停止給料，將機中的物料排凈，然后按順序關(guān)閉主電動機及潤滑電動機。破碎機停機時，要檢查緊固螺栓是否牢固和易磨損部分的磨損程度，是否需要更換。除了以上的五點外，對破碎機的安裝，既要保證牢固可靠，位置正確，又要注意防振要求，并把可調(diào)部位調(diào)至適當(dāng)位置。立式磨系列中磨盤直徑已達5以上，電機功率5000以上，臺時產(chǎn)量500以上。磨機系統(tǒng)操作自動化，應(yīng)用自動化調(diào)節(jié)回路及電子計算機控制生產(chǎn)，代替工人操作，力求生產(chǎn)穩(wěn)定。在先進的工業(yè)化國家，微米級超細粉碎設(shè)備已過渡了其發(fā)明時期，而進入成熟、配套、完善的階段，設(shè)備研究朝著亞微米級超細粉碎和微米級精密分級的方向發(fā)展。s quarry from English Peabody Holmes. The APP2030 bulldozer and the APKM1630 intermediate crusher are two kinds of largescale impact type breakers, presently pays the English quarry use. Two equipment contract prices are 125 pounds (in contract including supplies electric drive equipment, specialpurpose speed control equipment and energy recycling installment).At present several hundreds Hazemag impact type breakers have been used in the limestone and other mines. In which majority breakers productivity has all surpassed for 500.American HewittRobins Corporation is producing the double rolls type and three rolls type breaker, the impact type breaker and the hammer type breaker. The double rolls type breaker is used in the process load big work, its productivity surpasses for 810, this machine has used the hydraulic pressure crushing roller installment, and the overload protection spring and the oak rubber tire drive type. This pany produces 24 inches48 inches three rolls both sides coal washing used the breaker, and has the small crushing roller hydraulic unit and the belt pulley drive. Productivity (stave product granularity is when 2 inches) may amount to for 320 .The HewittRobins impact type breaker is one kind of high efficiency, big the reduction ratio impact type breaker. Its specification respectively is 36 inches54 inches and 48 inches66 inches. This machine productivity is decided by the riddle through whole size. When the riddle clear size of opening is inches, its productivity may amount to for 900.This pany also makes two kinds of specifications the hammer type breakers, namely: 36 inches 32 inches and 48 inches32 inches, its riddle lattice bar and the spacing all are adjustable. This kind of hammer type breaker productivity may amount to for 190, the rotation is 1350. But the special high speed largescale hammer type breaker rotation is 1800.West German KHD Humboldt Wedge AG Corporation makes many kinds of the impact type breakers. The PEG impact type breaker is used for the thick garrulous as like limestone, the gypsum and so on mineral. This machine has 9 kinds of specifications, and its productivity may up to 1650, may amount to for the material granularity, the product granularity is 0~15. This pany makes the PEF impact type breaker is very small for the material granularity, may amount to , and the product granularity is 0~44. This pany also made the PEK impact type breaker used in the pulverized coal work, and some 10 specifications, biggest productivity amounted to for 2000, amounted to for the material granularity. KHD Corporation makes the WB25 double rolls breaker, is suitable for the stave medium degree of hardness material. This machine is loaded with the double crank which connects with the rack (wrist plate) to install, thus has guaranteed the stave strength reasonable distribution. This kind of breaker diameter is , the width is 3, can break the medium degree of hardness material, it gives the material granularity is 250, the product granularity is 75, productivity is 2223. The breaker riddle gap may through the mechanical way adjustment, and is loaded with the overload protection.Soviet Machinoexport Corporation produces the impact type breaker, is used for the stave medium degree of hardness the wearresisting ore. This kind of breaker needs the actuation power is small, but the reduction ratio is big. This pany also makes many kinds of pattern rotor type breaker which is used in thick garrulous, garrulous and broken bits, having SMD85A and SMD86A。——After stave material greatest granularity.Because the various countries39。 The breaker takes the minimum dump mouth width.It is very convenient with this type putation reduction ratio, because is impossible in the production frequently to make the screening analysis to large quantities of materials, but uses this type, so long as knew the breaker to the material mouth and the dump mouth width, may calculate the reduction ratio. Is worth pointing out that,certain breakers, its dump granularity are not decided by the dump mouth size.③ Calculates with the average granularityIn this in the formula——Stave front material mean diameter。 ④ High speed movement work body to hanging material impact.5) Grinds (attrition)After the material and between the movement active face certain pressure and the cutting action of force, its shear stress achieved when material shearing strength limit, the material then crushes, or between material each other rubs when the cutting, the gr