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啟渣漿泵前的準(zhǔn)備檢查工作
1.啟泵前的檢查
泵在啟動(dòng)前一定要進(jìn)行一 次仔細(xì)的檢查，尤其是對(duì)新安裝的泵，主要是檢查以下方面:
(1)檢查泵和原動(dòng)機(jī)的聯(lián)軸器是否在同一軸線上，及檢查兩聯(lián)軸器之間的間隙;
(2)用手盤車，轉(zhuǎn)動(dòng)是否均勻靈活，是否有偏沉或摩擦現(xiàn)象;
(3)檢查泵和原動(dòng)機(jī)的周圍是否有妨礙運(yùn)轉(zhuǎn)的東西;
(4)檢查軸承油位及油質(zhì);
(5)檢查地腳螺栓及其他螺栓是否擰緊;
(6)檢查原動(dòng)機(jī)的轉(zhuǎn)動(dòng)方向是否符合泵要求的旋轉(zhuǎn)方向，尤其是新安裝的泵尤為重要。方法是脫開聯(lián)軸器，點(diǎn)動(dòng)一下原動(dòng)機(jī)，看聯(lián)軸器的旋轉(zhuǎn)方向，一般泵上有轉(zhuǎn)向牌，如無轉(zhuǎn)向牌，對(duì)蝸殼式泵，則可以從外形判別，即轉(zhuǎn)動(dòng)方向應(yīng)是以殼小的向大的方向轉(zhuǎn)動(dòng)。如果看葉輪的葉片，即是葉片轉(zhuǎn)動(dòng)時(shí)液體能進(jìn)入流道的旋轉(zhuǎn)方向:
(7)打開、檢查冷卻沖洗管路，及潤滑油管路是否通暢，水壓、油壓是否正常:
(8)檢查出口閥門開啟情況(離心泵應(yīng)關(guān)閉狀態(tài)，軸流泵應(yīng)開啟狀態(tài)):
(9)檢查電器設(shè)備。
(10)檢查進(jìn)水池的水位及是否清潔。
2.啟動(dòng)前的灌水或抽真空
除自吸泵或葉輪浸在液中的泵外，泵都需要灌滿液體或用真空泵抽真空啟動(dòng)( 自吸泵也需在泵體內(nèi)灌滿液體)，決不能泵內(nèi)無液干啟動(dòng)。灌液時(shí)還要注意充分放氣。放氣口應(yīng)設(shè)在最高處。
3.暖泵
對(duì)輸送高溫液體的泵要注意開泵前暖泵，暖泵時(shí)每小時(shí)溫升不應(yīng)大于50C，并每隔5 ~10min盤車半圈。
二、啟泵
啟泵時(shí)，泵和原動(dòng)機(jī)前不要站人，尤其要避開聯(lián)軸器的地方，對(duì)高壓水泵要防止漏水傷人。啟泵后要迅速打開出口閘閥到額定壓力或流量( 關(guān)閥運(yùn)轉(zhuǎn)不得超過3min)，并密切注意泵的運(yùn)轉(zhuǎn)情況，如發(fā)現(xiàn)異常要趕快停泵檢查原因，排除故障后再開。渣漿泵
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
