输送淀粉浆泵单螺杆泵结构简单,不需特殊工具

 输送淀粉浆泵单螺杆泵结构简单,不需特殊工具快速拆卸

卧式单螺杆泵操作保养规定:Horizontal single screw pump operation maintenance provisions:

     一、操作规程  1、检查流程是否正确。  2、检查联轴器保护罩，地脚等部分螺丝是否紧固，有无松动现象。 3、轴承油盒要有充足的润滑油，油位应保持在规定范围内，油质是否完好。  4、检查电压是否在规定范围内，外观电机接线及接地是否正常。 5、用手盘动联轴器，检查泵内有无异物碰撞杂声或卡死现象，并给予消除。  6、停车前需先停止电机运行，后关闭吸入管阀门，再关闭排出口阀门（防止干转，以免擦伤工作表面）。A, operating rules 1, check whether the process is correct.2, check the coupling shield, whether the anchor parts such as screw fastening, the presence of loose phenomenon.3, bearing oil box should have plenty of oil, oil level should be kept within the prescribed scope, oil are in good condition.4, check whether the voltage is within the scope of the regulations, electrical wiring and grounding are normal in appearance.5, with the hand disc coupling, check there are no foreign bodies collide in the pump noise or jammed phenomenon, and to give away.Need before 6, parking to stop the motor running, after close the suction valve, then close the discharge valve (turn to prevent dry, so as not to scratch working surface).

     二、维护保养  1、检查轴封及各接合密封面是否有泄漏；  2、检查冷却系统是否畅通，压力、温度是否在合理范围； 3、检查运转的平稳性，是否有振动； 4、检查机座螺栓是否松动；  5、长时间停车应排净系统中的物料，气温较低时检查防冻防凝情况。 2, 1, check the shaft seal and the maintenance of joint sealing surface whether there is leakage;2, check whether the cooling system is open, pressure, temperature is in the reasonable scope;3, check the operation stability, whether to have vibration;4, check whether the mounting bolts is loose;5, stop for a long time should be no net system of material, the temperature is lower check antifreeze anti coagulation conditions.

     三、注意事项  1、启动前一般应全开入口阀、出口阀，打开出口阀后，应尽快将泵启动。严禁在没有打开出口阀的情况下开泵（如果出口阀关闭，必须保证出入口连通阀全开）。  2、严禁在没有灌泵的情况下长时间运转。  3、出现下列情况立即停泵：严重泄漏、异常振动、异味、火花、烟气、撞击、电流持续超高等现象。  4、螺杆泵在运行过程中,轴承温度不能超过环境温度35℃,Zui高温度不得超过80℃. 1, before the start of the general considerations should be fully open the inlet valve and outlet valve, open the outlet valve, should will pump start as soon as possible.Is strictly forbidden in the absence of open the outlet valve opening pump (if the outlet valve closed, must ensure that the gateway connected valves).2, it is strictly prohibited in the absence of irrigation pump long time running.3, stop the pump immediately in the following circumstances: serious leakage, abnormal vibration, bad breath, a spark, flue gas, such as collisions, current ultra-high phenomenon.4, screw pump in the process of operation, the bearing temperature cannot exceed ambient temperature 35 ℃, the highest temperature should not exceed 80 ℃.单螺杆泵概述

　　螺杆具有单头螺纹，其任意截面皆为半径为R的圆，截面的中心位于螺旋线上且与螺杆的轴心线偏离一个偏心距e，绕轴旋转且沿轴向移动而形成的头数比Lobes：螺杆的定子的头数T1比转子的头数T2多一个，即T1=T2+1.他们的比值成为头数比。螺杆泵可以分为单头（1：2）和多头（2：3，3：4）等。头数比越多，螺杆泵的输出扭矩越大，转速越低。反之，输出的扭矩越小，转速越高.衬套内表面具有双螺纹，其任意截面为一长圆，两端是半径为R（等于螺杆截面半径）的半圆，中间是长为4e的直线段。衬套的任意截面都是相同的长圆，只是彼此互相错开一个角度。螺杆装入衬套后，螺杆表面与衬套内螺纹表面之间形成一个个封闭的腔室，同时任意截面也被分成上下两个月牙形工作室。当螺杆旋转时，靠近吸入室的第一个工作室的容积逐渐增大，形成负压，在压差的作用下液体被吸入工作室。When the screw rotates, the first studio near the suction chamber volume increases gradually, form the negative pressure, under the action of pressure difference, liquid drawn into the studio.随着螺杆的继续转动，工作腔容积不断增至Zui大后，这个工作室封闭，并将液体沿轴向推向压出室。As a continuation of the screw rotation, continuous working volume to maximum, the studio closed, pushed along the axial liquid and the pressure out of the room.

与此同时上下两个工作室交替循环地吸入和排出液体，因此液体被连续不断地从吸入室沿轴向推向压出室。

　　单螺杆泵（helical rotor pump;single-screw pump;mono pump）属于转子式容积泵，它是依靠螺杆与衬套相互啮合在吸入腔和排出腔产生容积变化来输送液体的。它是一种内啮合的密闭式螺杆泵，主要工作部件由具有双头螺旋空腔的衬套（定子）和在定子腔内与其啮合的单头螺旋螺杆（转子）组成。当输入轴通过万向节驱动转子绕定子中心作行星回转时，定子 — 转子副就连续地啮合形成密封腔，这些密封腔容积不变地作匀速轴向运动，把输送介质从吸入端经定子 — 转子副输送至压出端，吸入密闭腔内的介质流过定子而不被搅动和破坏。单螺杆泵分类：整体不锈钢单螺杆泵，轴不锈钢单螺杆泵。Single screw pump classification: overall stainless steel single screw pump, stainless steel shaft single screw pump.

　　选用泵的规格是根据被输送液体的性质和流量、压力来决定的，而泵的转速则由输送液体的粘度和腐蚀性、作为主要参数来选择，才能保证泵可靠运行。泵的设计转速为输送清水或清水相类似的无腐蚀性液体时允许Zui高转速，在实际使用中因介质性质与寿命要求不同，选用时一般都应低于设计转速。对高粘度和含颗粒介质，一般采用设计转速的1/2-1/3 或更低些，低转速对泵的磨损有利，但在使用后由于定子的磨损流量下降，这时可适当提高转速，以补偿流量下降也为常策。输送介质的温度应在 -10 ℃～80℃特殊情况可高达120℃。

泵的每级（定子的一个导程）正常压力为 0.6Mpa，短时间（不超过30分钟）内允许高达0.8Mpa，当磨损后在相同输出压力时的容积效率要逐步下降。泵送清水时Zui高吸程为 8米，实际使用建议不超过6.5米，当泵送高粘度介质时，应以正压吸入。