辊压

The size of press is determined by what type of materials are being fed into it and how it’s being fed. 目前大多数装置都涉及粪便脱水. 在这里 是否有图表显示不同的尺寸和容量. 用于肥料以外的用途, 请联系麦克菠菜网最稳定正规平台_最全菠菜网大全农业团队的尺寸和选择.

这取决于系统的目标. If the goal is simply to dewater the material enough to handle with a payloader and haul to the fields, 单级压机通常就足够了. If there are other goals for dewatering, then a double or single press may be a good idea. 这 图表 显示在每个压榨阶段发生的脱水量.

只需要一个小型罐式压缩机. Once the air springs are filled with air, they consume little if any air during operation.

超高mw刮板是标配. 在漫长的情况下, 丝状材料，比如水果茎，甚至是碎塑料, 哪些会在刮板下堆积, 使用电动刷子. 

Both a Roll Press and a Screw Press operate under the principle of applying high pressure to squeeze the moisture from the solid material, 但每一种方式都略有不同.

The Roll Press contains two rolls that rotate counter to each other and contact each other at a small area called a nip point. 这是两个辊之间施加压力的点. The bottom roll contains drainage holes to allow the water to escape once it is squeezed out. 最上面的卷是实心的, and is often constructed or covered with a slightly softer material than plain steel. 很多时候这种材料是橡胶或聚氨酯. Thickened material is fed into the top of the roll, near the nip point. As the rolls rotate, they pull the material through and the high pressure squeezes water out. There is no sliding abrasion in the high pressure point in a roll press, 所以当沙子被用作垫层材料时，它们是很好的选择. A roll press isn’t suited to function as a primary separator unless the incoming feed slurry has a high total solids (TS) concentration. 对于奶牛粪便，这需要大约12%的TS或更高. 

A Screw Press can handle much lower total solids concentrations and higher incoming flow rates; therefore, it is suitable to be used as either a primary separator or secondary dewaterer. 不像辊压机, 它使用两个反向旋转的卷筒来形成一个夹击点, 螺旋压力机使用包含在筛网内的旋转螺旋钻. The auger rotates constantly while material floods the interior of the screen. Larger fibers are trapped on the screen while liquid and smaller particles pass through. 随着螺旋钻的旋转, it scrapes the captured fibers from the screen and advances them to the discharge. As the fibers approach the discharge, they begin to form a thick plug of material. Paddles at the front of the machine retard their forward motion and the plug is forced to slow down and pressure begins to form. 脱水发生在高压塞中. Tight tolerances between the screw and the screen are necessary to ensure the captured fibers are advanced forward into the dewatering zone. Due to these tight tolerances and the sliding abrasion that happens between the screw and the screen, Screw Presses aren’t the best choice for dewatering manure if sand bedding is present.