GM型三螺杆泵的困油现象及卸荷与其他知识
GM型三螺杆泵的流量与转速成线性关系，相对于低转速的螺杆泵，高转速的螺杆泵虽然能增加了流量和扬程，但功率明显增大，高转速加速了转子与定子间的磨耗，必定使螺杆泵过早失效，而且高转速螺杆泵的定转子长度很短，极易磨损，因而缩短了螺杆泵的使用寿命。
GM型三螺杆泵的困油现象及卸荷
困油现象的危害：
使闭死容积中的压力急剧升高，使轴承受到很大的附加载荷，同时产生功率损失及液体发烧等不良现象；溶解于液体中的空气便析生产气愤泡，产气愤蚀现象，引起振动和噪声。
消除困油现象：
在GM型三螺杆泵的侧板上或浮动轴套上开卸荷槽。非对称式，必需保证在任何时候都不能使吸油腔与压油腔相互串通；这样的齿轮泵不能反转。GM型三螺杆泵在使用中注意不同形式的特点和性能，在使用中经常出现不同的问题和反应，在使用中保证正常的使用，出现问题及时进行解决，对不同的方面进行控制，按照正常的方式进行。
GM型三螺杆泵具有压力和流量范围广泛，流量范围0.2～600m3/h最高工作压力可达6.3MPa；运送液体的种类和粘度范围宽广；流量均匀连续，振动小，噪音低；吸入性能好，具有自吸能力；因为GM型三螺杆泵内的回转部件惯性力较低，故可使用很高的转速等特点。
主要应用于燃油输送、液压工程机械业及重型机械业、船舶及海上工程、油罐及印染工业、化工、石化及其它工业。
GM型三螺杆泵安装：
·安装方便
·减轻劳动强度
·不需安底阀
·不需灌引水
·极少维修
·性能稳定
GM型三螺杆泵主要用途：
1、环境温度≤45℃，介质温度≤60℃。
2、介质PH值铸铁泵为6～9，3GSGM型三螺杆泵为1～14。通过颗粒最大直径为泵口径的60%，纤维长度为口径的5倍。
3、介质中杂质总重量不超过介质总重量的15%，介质比重不超过1240千克/立方米。
GM-type three-screw pump flow and speed of a linear relationship relative to the low speed of the screw, although the high speed screw to increase the flow and head, but significantly increased power, high-speed acceleration of the rotor and stator wear, premature failure will make screw pump, and high speed screw pump rotor length is very short, easy to wear, and thus shorten the life of the screw pump.
GM-type three-screw pump oil phenomena and unloading oil phenomena hazards:
So close volume in dead rising pressure to be a great bearing the additional load, while producing power losses and negative phenomena such as liquid fever; dissolved in the liquid will analyze the air bubbles produced angry, angry corrosion products, causing vibration and noise.
Elimination of oil phenomena:
GM-type three-screw pump in the side or floating on the open sleeve unloading slot. Non-symmetrical, must ensure that at no time can the oil suction chamber and the pressure chamber collusion; such a gear pump can not be reversed. GM-type three-screw pump in the use of attention to the different forms of the characteristics and performance, often in the use of different issues and responses, in normal use to ensure the use, appears to resolve the problem Jishi, pairs of different aspects of control, An Zhao the normal manner.
GM-type three-screw pump with a wide range of pressure and flow, flow range of 0.2 ~ 600m3 / h maximum working pressure up to 6.3MPa; delivery type and viscosity of liquid broad range; flow uniformly continuous, small vibration, low noise; inhalation performance Well, with self-priming ability; as GM-type rotating components within the three-screw pump, lower inertia, it can use high speed and so on.
Mainly used in oil transportation, hydraulic engineering machinery and heavy machinery industry, shipbuilding and marine engineering, oil tank and the printing and dyeing industry, chemical, petrochemical and other industries.
GM-type three-screw pump installation:
* Easy installation
* Reduce the labor intensity
* Not need bottom valve
* No irrigation water
* Minimal maintenance
* Stable
GM-type three-screw main purposes:
1, ambient temperature ≤ 45 ℃, medium temperature ≤ 60 ℃.
2 medium cast iron pump PH value 6 ~ 9,3 GSGM type three screw 1 to Maximum diameter of the pump through the particle diameter of 60%, fiber length for the caliber of 5 times.
3, the total weight of impurities in the medium the total weight of not more than 15% of medium, medium weight not more than 1240 kg / cubic meter.
