在大多数情况下，两者都是 双辊破碎机 和 筛选器 will accomplish the desired results for many of the same applications; however, there are differences between the two that offer operators greater choices to help meet the requirements of their particular crushing plant.
这些差异包括安装, 不定期铁保护, 轧辊速度和送料方法, 驱动配置, 菠菜网最稳定正规平台_最全菠菜网大全尺寸及, 最终, 成本.
安装
实际上在所有情况下, the V-belt driven 双辊破碎机 is rigidly mounted to the floor or structure with the feed chute 和 discharge chute firmly attached. The motor bases are also rigidly mounted to the floor independent of the crusher base mounting.
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相反, the 筛选器 design incorporates steel wheels into the bottom of the base frame for mounting on rails. 然后，该单元可以滚出物料流, 如果有必要的话, 清除不固定的材料或进行维修.
A flexible connection is utilized between the feed chute 和 the crusher feed opening to allow for unrestricted movement of the machine. 液压缸提供提高和降低车轮组件.
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不定期铁防护
When an uncrushable item is encountered by a V-belt driven 双辊破碎机, the movable roll will be forced to move laterally away from the stationary roll. The force exerted by the movable roll will overcome the preset spring tension of the automatic toggle mechanism.
这种力使开关打开, allowing the movable roll to move away from the stationary roll long enough to pass the uncrushable object, 然后，它立即将活动辊返回到原始位置. 在整个过程中，破碎机始终处于持续运行状态.
菠菜网最稳定正规平台_最全菠菜网大全 双辊破碎机 have an automatic toggle mechanism for passing uncrushable material.
Tramp iron protection on the 筛选器 is provided by an underspeed sensor 和 fluid coupling on each drive. 当遇到不可粉碎的物体时, the underspeed sensor observes a stall condition 和 shuts the drives down.
如果这一切发生得不够快, 扭矩负载增加，流体联轴器将开始打滑. The fluid coupling slip relieves the stress on the components 和 therefore, protects the machinery.
处于100%打滑或失速状态, the temperature in the fluid couplings will rise to the temperature limit of the fusible plug, 这将有效地断开输出电源. 如果不稳定物料已停止，粉碎辊, 生产将暂停，直到手动删除不定期记录.
尺寸机有马达, 齿轮减速箱, 流体联轴器和低速传感器, 在失速情况下关闭驱动器的装置.
驱动配置
The drive configuration for a 双辊破碎机 consists of motor, V-belt drive 和 flywheel. 浆料传动由电机、流体联轴器和齿轮减速器组成.
The horsepower requirements for a V-belt driven 双辊破碎机 are lower than that of the 筛选器 due to the utilization of the large flywheels. The kinetic energy stored in the flywheels combined with the higher roll speeds powers the crusher through peak crushing moments.
浆料机不使用飞轮, 和 the rolls rotate at approximately one-third of the speed of the V-belt driven crusher. 因此, 由于执行粉碎动作所需的扭矩, 需要更大的马达马力.
轧辊速度和送料方法
A typical 24" diameter 双辊破碎机 has a st和ard roll speed of 150 rpm. This roll speed can be easily increased to attain higher throughput capacities by changing the electric motor rpm 和/or the motor sheave/flywheel diameters. 然而, 具有更高的吞吐量, you run the risk of increased fines generation 和 accelerated component wear.
One hundred percent of the feed to a V-belt driven 双辊破碎机 must flow between the rolls, creating a ribbon of material 和 increasing the potential of creating additional fines due to inter-particle crushing taking place. The feed opening spans the length of the crusher rolls but only measures to the centerlines of the roll bodies.
进料流在双辊破碎机的辊子之间流动.
The rolls of the 筛选器 rotate at a set speed of approximately 50 rpm (primary 和 secondary) or approximately 88 rpm (tertiary), which is dictated by the gear reduction of the reducer when powered by an 1800 rpm electric motor. The slower roll speed proves advantageous to component wear life 和 reduces the amount of fines generated. 较大的进料开口也有助于 减少罚款产生 并在提高吞吐量方面发挥了重要作用.
The 筛选器 is fed the length of the crusher rolls but also beyond the outer dimensions of the roll bodies, 允许进料在卷筒之间和卷筒外侧流动, 创建三个流程.
On the outside edge of the 筛选器's rolls are sets of replaceable sizing combs that intermesh with the roll teeth. 这个特性很重要, 因为它产生了一种筛选效应, allowing most of the undersized material to fall through the crusher without further degradation 和 also compensates for the slower roll rotation with regard to capacity.
Material is fed across the length of the 筛选器 rolls so that the feed goes between 和 to the outside of the rolls.
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The final product size required is another consideration one must take into account when considering 破碎机的选择. 通常, both machines can produce the same product size until the required product size drops below 1.5” – 2”. It is at this point where a 双辊破碎机 must be used instead of a 筛选器. The design of the 双辊破碎机 allows for a finer adjustment 和 therefore a 更细的菠菜网最稳定正规平台_最全菠菜网大全尺寸.
成本
设计上的不同也带来了成本上的不同. 双辊破碎机是两者中更具成本效益的选择. The main differences that make up the majority of the 成本 differences is the 驱动配置. 由于双辊破碎机是v带驱动的, 由于飞轮设计，可以使用较低的电机马力.
相比, 尺寸机是直接驱动的, 这意味着飞轮已经被移除，取而代之的是一个齿轮减速器, 扭矩限制联轴器和更高马力的电机.
当决定在双辊破碎机和浆料机之间, considering all of these differences will help you choose the right type of crusher for your mineral processing plant.
