一、用途及工作原理

I. Purpose and Working Principle

        NZS中心传动式耙式浓缩机是选矿厂采用湿式选矿的选后产品（矿浆）进行脱水的一种设备，其一般由浓缩池（钢质或水泥制成）和机械刮泥耙组成。进入浓缩池的矿浆其固体矿粒在自身重力的作用下沉降于池底，实现固液分离，沉积于底池的矿泥被刮泥耙连续不断地刮集到中心排矿口排出，而澄清水由池边溢流口溢出，达到脱水浓缩的目的。

Rake type  center driving laboratory thickening equipment model NZS which is designed for dehydration of products (ore slurry) after  wet type ore separation is composed of thickening tank (made of steel or  cement) and mechanical scraper rake. The solid ore grains in the slurry inside  thickening tank sedimentate on the tank bottom under gravity. In this way,  solid-liquid separation is realized. The sludge deposit on tank bottom will be  continuously scraped by scraper rake to central discharge port at which it is  discharged. And then, clear water will flow out from overflow port at the tank.  At this point, dehydration and thickening is realized.

        二、技术参数

Ⅱ. Technical Parameters

三、传动过程及结构

III. Transmission Process and Structure

NZS中心传动式浓缩机由浓缩池、耙架、减速装置、提耙装置、栏杆、天桥、进料槽等组成。

Center driving thickening machine model NZS is composed  of thickening tank, rake holder, reduction gear, rake lifting device, railing,  bridge and feed chute etc.

其传动过程如下：电动机通过弹性联轴器带动减速机的高速轴动动，减速机的低速轴通过一对齿轮付带动蜗轮箱内的蜗杆转动，蜗杆带动大蜗轮转动，大蜗轮则带动主轴和耙架转动，从而实现沉降矿粒被刮集到排矿石漏斗。

Transmission process: the motor drives the high-speed  shaft of speed reducer to operate through flexible coupling; the low-speed  shaft of reducer drives the worm inside worm gear case through a pair of gears;  the worm drives the big worm wheel which will then drive the spindle and rake  holder so as to scrape the ore grains to discharge hopper.

转动提耙手轮，可以提升或下降耙架，当浓缩池内沉降的矿粒过厚埋住耙架而超载时，应转动提耙手轮，将耙架从矿粒层中提起，载荷减轻后，又将耙架下降到工作位置，主轴装于大蜗轮中心孔内，能上下滑动，靠导向平键将扭转力传给主轴。

Rotate the hand wheel for rake lifting to lift or lower  the rake holder. In case the excessively thick layer of ore grains inside  thickening tank cover the holder and thus lead to over-load, the hand wheel  shall be rotated so as to lift the holder from the layer of ore grains. The  holder shall be then lowered to operating position after the load is reduced.  The spindle that is mounted inside the central bore of big worm wheel can slide  up and down, transmitting the twisting  force to spindle through feather key.

天桥部件一般由槽钢或工字钢焊成，其上装有栏杆和传动机构，整个天桥要和浓缩池用螺栓连接。
Bridge components that are generally fabricated of welded  channel steel or H-section steel are provided with railing and transmission  mechanism. The entire bridge shall be connected to thickening tank with bolts.
浓缩池是矿浆沉降的容槽， NZS-1.8、NZS-3.6浓缩机其浓缩池为钢板板制成,连同溢流口,由我厂供给,即NZS-6，NZS-9， NZS-12 的浓缩池则为钢筋混凝土制成，连同溢流口由用户自行设计旋工。

Thickening tank is a container tank for slurry  deposition. Thickening tanks of thickening equipment models NZS-1.8 and NZS-3.6  are made of steel plate. We supply both thickening tank and overflow port.  Thickening tanks of models NZS-6, NZS-9 and NZS-12 are fabricated from  reinforced concrete. Users shall design the rotation engineering of overflow  port by themselves.