启渣浆泵前的准备检查工作

1.启泵前的检查

泵在启动前一定要进行一 次仔细的检查，尤其是对新安装的泵，主要是检查以下方面:

(1)检查泵和原动机的联轴器是否在同一轴线上，及检查两联轴器之间的间隙;

(2)用手盘车，转动是否均匀灵活，是否有偏沉或摩擦现象;

(3)检查泵和原动机的周围是否有妨碍运转的东西;

(4)检查轴承油位及油质;

(5)检查地脚螺栓及其他螺栓是否拧紧;

(6)检查原动机的转动方向是否符合泵要求的旋转方向，尤其是新安装的泵尤为重要。方法是脱开联轴器，点动一下原动机，看联轴器的旋转方向，一般泵上有转向牌，如无转向牌，对蜗壳式泵，则可以从外形判别，即转动方向应是以壳小的向大的方向转动。如果看叶轮的叶片，即是叶片转动时液体能进入流道的旋转方向:

(7)打开、检查冷却冲洗管路，及润滑油管路是否通畅，水压、油压是否正常:

(8)检查出口阀门开启情况(离心泵应关闭状态，轴流泵应开启状态):

(9)检查电器设备。

(10)检查进水池的水位及是否清洁。

2.启动前的灌水或抽真空

除自吸泵或叶轮浸在液中的泵外，泵都需要灌满液体或用真空泵抽真空启动( 自吸泵也需在泵体内灌满液体)，决不能泵内无液干启动。灌液时还要注意充分放气。放气口应设在最高处。
3.暖泵

对输送高温液体的泵要注意开泵前暖泵，暖泵时每小时温升不应大于50C，并每隔5 ~10min盘车半圈。
二、启泵

启泵时，泵和原动机前不要站人，尤其要避开联轴器的地方，对高压水泵要防止漏水伤人。启泵后要迅速打开出口闸阀到额定压力或流量( 关阀运转不得超过3min)，并密切注意泵的运转情况，如发现异常要赶快停泵检查原因，排除故障后再开。渣浆泵

Preparation and inspection before starting the slurry pump

1. Inspection before starting the pump

Before starting the pump, a careful inspection must be carried out, especially for the newly installed pump, mainly including the following aspects:

(1) check whether the coupling of pump and prime mover is on the same axis, and check the clearance between the two couplings;

(2) turning by hand, whether the rotation is uniform and flexible, whether there is deflection or friction;

(3) check whether there is anything hindering the operation around the pump and prime mover;

(4) check the oil level and quality of the bearing;

(5) check whether the foundation bolts and other bolts are tightened;

(6) it is important to check whether the rotation direction of the prime mover meets the rotation direction required by the pump, especially for the newly installed pump. The method is to disconnect the coupling, jog the prime mover, and see the rotation direction of the coupling. Generally, there is a turning plate on the pump. If there is no turning plate, for the volute pump, it can be judged from the shape, that is, the rotation direction should be from the small to the large direction of the shell. If you look at the blade of the impeller, that is, the direction of rotation in which the liquid can enter the flow passage when the blade rotates:

(7) open and check whether the cooling and flushing pipelines, lubricating oil pipelines are smooth, and whether the water pressure and oil pressure are normal:

(8) check the opening of outlet valve (centrifugal pump shall be closed and axial flow pump shall be opened):

(9) check electrical equipment.

(10) check the water level and cleanliness of the water inlet tank.

2. Water filling or vacuum pumping before startup

In addition to the self-priming pump or the pump with impeller immersed in liquid, the pump needs to be filled with liquid or started by vacuum pumping (the self-priming pump also needs to be filled with liquid in the pump body), and it must not be started without liquid dry in the pump. When filling liquid, pay attention to full air release. The vent shall be set at the highest level.

3. warm pump

For the pump conveying high temperature liquid, pay attention to warm up the pump before starting the pump. When warming up the pump, the temperature rise per hour shall not be greater than 50c, and the pump shall be turned for half a circle every 5-10min.

Two. Start pump.

When starting the pump, do not stand before the pump and prime mover, especially avoid the coupling, and prevent the high-pressure water pump from leaking and hurting people. After starting the pump, open the outlet gate valve to the rated pressure or flow (the valve shall not be closed for more than 3min), and pay close attention to the operation of the pump. In case of any abnormality, stop the pump immediately to check the cause, and then open it after troubleshooting. Slurry pump