电动机输出功率偏小、齿 轮泵排量选得过大或压力调得过高时，也会造成压力不足 当然，压力表损坏或压力表节流孔堵塞时也显示不出压力，此时可换装一个新的压力表检查。Small motor output power, gear wheel pump capacity to choose too large or pressure too high, can cause stress Pressure gauge damage or pressure gauge orifice jams, of course, also could not show pressure, can change a new pressure gauge to check at this time.

　　如果确认泵无流量输出，可能是由于泵安装有误、泵的转向不对，或吸人侧(进液口及吸液管道)堵塞、出口止回阀装反或卡死了，也有可能是驱动轴断裂了。If confirmed that no flow pump output, could be turned to the pumps due to pump installation is wrong, wrong, or suction side (liquid into the mouth and suck liquid pipeline jam, export check valve installed backwards, or card is dead, it is possible that the drive shaft fracture.

　　高粘度泵在转速过低时会引起出液量不足，这种现象往往是由于泵的驱动装置打滑或功率不足所致。此时应检查齿 轮泵的实际转速、泵与电动机的联接及功率匹配情况等。High viscosity pump in low speed can cause insufficient quantity of produced liquid, this phenomenon is often due to the slippage of the pump drive or insufficient power.Check the gear wheel pump at this time of the actual speed, pump and motor connection and power matching, etc.

   ●高粘度泵在开始运转前，往齿轮泵的壳体内灌满待输送的液体，便于安全启动。若环境温度低于冰点，应预先向泵内通入热蒸汽，进行预热处理，然后才可启动齿轮泵。高粘度泵的旋转方向要与进、出油口相符。齿轮泵若是次运行，或长期闲置后再使用，在空载或小负荷情况下先跑合一小时左右。如果在跑合阶段预先觉察出异常温升、泄漏、振动和噪声时，应停机检查。高粘度齿轮泵的支座或法兰与其驱动电机应采用共同的安装基础，基础、法兰或支座均需具有足够的刚度，以减小齿轮泵运转时产生的振动和噪声。电动机与齿轮泵须用弹性联轴器连接，同轴度小于0.1毫米，倾斜角不得大于1度。安装联轴器时不得用锤敲打，以免伤害齿轮泵的齿轮等零件。若用带轮、链轮等驱动时应设托架支承，以防主动齿轮轴承受径向力。紧固齿轮泵、电动机的地脚螺钉时，螺钉受力应均匀，连接可靠。用手转动联轴器时，应感觉到齿轮泵能够轻松地转动，没有卡紧等异常现象出现，然后才可以配管。

    高粘度齿轮泵的吸油管道内径应足够大，并避免狭窄通道或急剧拐弯、减少弯头，去除不必要的阀门、附件，尽可能地降低泵的安装高度，缩短吸油管道的长度，以减少压力损失。管接头等元件的密封要良好，以防止空气侵入，从而控制气穴与气蚀的发生。止回阀与安全阀在齿轮泵的输出管路上安装一个止回阀。这样在检修泵及输出管道时，系统中的液体不会发生倒流。齿轮泵带负荷停车时，亦可防止泵倒转而在其输出管道内产生局部真空。应当注意，出口止回阀不能装反或出现卡死现象。高粘度泵的出口管路上还应当设置安全阀等保护装置，这样一旦泵的出口通道发生堵塞，就可以打开安全阀卸压。安全阀可以与泵体或泵盖铸成一体，也可以单独装配。对于需要正反转的高粘度齿轮泵，其进出口管路上均需设置安全阀。

      高粘度泵是输送高粘度液体的齿轮泵，应做到在较低的功耗、较少的泄漏、较大的压力下输出 多的流量。在确定所要输送的介质时，应该严格遵循产品说明书上的规定，尽量使用厂家推荐的流体介质，并注意考虑系统的工作温度范围。当希望在某一较宽的温度范围内使用时，输送介质的粘度指数应该高些。输送介质不仅是能量传递的中介，而且也是润滑、密封及传热介质。液体粘度过高会增加内摩擦阻力，降低输出功率，浪费能量，并产生过高的系统温度.高粘度齿轮泵的出口管路上应当设置安全阀等保护装置，这样一旦泵的出口通道发生堵塞，就可以打开安全阀卸压。对于需要正反转的高粘度齿轮泵，其进出口管路上均需设置安全阀。High viscosity pump is conveying liquid with high viscosity gear pump, should be in lower power consumption, less leakage, under the pressure of large output the most traffic.When determining to conveying medium, we should strictly follow the provisions of the product manuals on use manufacturers recommend fluid as far as possible, and pay attention to consider the system operating temperature range.When you want to use in a wide temperature range, medium viscosity index should be higher.Medium is not only the energy transfer intermediary, but also lubrication, sealing and heat transfer medium.Liquid viscosity is too high will increase internal friction resistance, lower output power, waste of energy, and generate high temperature system. High viscosity gear pump outlet pipe shall set up relief valve or other protective device on the road, so once the clogging pump export channels, can open the relief valve pressure relief.For high viscosity gear pump need positive &negative, import and export all needs to set up the line safety valve.

   1、工作压力的选定1, select the work pressure

　　高粘度泵额定的压力是指泵连续工作时的许用压力，而其工作压力则决定于外部负载，安装和调试的寿命与其工作压力直接相关。对于不频繁工作的齿轮泵，其工作压力可取为泵的额定压力，考虑到产品质量不同，将额定压力降低20%～30%使用。对于经常工作于较高压力下的齿轮泵，其工作压力应比泵的额定压力低1～2个压力级。石油化工设备常常是24小时连续运转，这时泵的工作压力应该取得比额定压力低得多，且工作转速也应该低于额定转速。如果高粘度齿轮泵的工作压力调整过高，则会使齿轮泵在超负荷下运行。

　　2.安装与试运转2. Installation and commissioning

　　高粘度泵的支座或法兰与其驱动电机应采用共同的安装基础，基础、法兰或支座均需具有足够的刚度，以减小齿轮泵运转时产生的振动和噪声。电动机与齿轮泵须用弹性联轴器连接，同轴度小于0.1毫米，倾斜角不得大于1度。安装联轴器时不得用锤敲打，以免伤害齿轮泵的齿轮等零件。若用带轮、链轮等驱动时应设托架支承，以防主动齿轮轴承受径向力。紧固齿轮泵、电动机的地脚螺钉时，螺钉受力应均匀，连接可靠。用手转动联轴器时，应感觉到齿轮泵能够轻松地转动，没有卡紧等异常现象出现，然后才可以配管。高粘度齿轮泵的吸油管道内径应足够大，并避免狭窄通道或急剧拐弯、弯头，去除不必要的阀门、附件，尽可能地降低泵的安装高度，缩短吸油管道的长度，以减少压力损失。管接头等元件的密封要良好，以防止空气侵入，从而控制气穴与气蚀的发生。在开始运转前，往齿轮泵的壳体内灌满待输送的液体，便于安全动。若环境温度低于冰点，应预先向泵内通入热蒸汽，进行预热处理，然后才可启动齿轮泵。齿轮泵的旋转方向要与进、出油口相符。齿轮泵若是次运行，或长期闲置后再使用，在空载或小负荷情况下先跑合一小时左右。如果在跑合阶段预先觉出异常温升、泄漏、振动和噪声时，应机检查。高粘度泵的出口管路上还应当设置安全阀等保护装置，这样一旦泵的出口通道发生堵塞，就可以打开安全阀卸压。对于需要正反转的高粘度齿轮泵，其进出口管路上均需设置安全阀。 

   ●如何选型How to choice

   选择高粘度泵时应该注意泵所输送的具体粘度、工作温度、介质比重、介质成分等等，只有更好的了解高粘度泵所输送的介质情况才能更好的选择所需要的高粘度泵产品。

Should be paid attention to when selecting high viscosity pump pump delivery by the specific viscosity, working temperature, the proportion of medium, medium composition etc., only a better understanding of the high viscosity pump transmission medium condition can better choose the required high viscosity pump product.

　　、必须了解高粘度泵所输送的介质粘度。因为介质粘度的高低直接影响到选择高粘度泵的转速。must understand the high viscosity pump transmission medium viscosity. Because the medium viscosity directly affects the choice of high viscosity pump speed.

　　了解高粘度泵所输送介质的性质，例如有没有腐蚀性。understand the nature of the high viscosity pump conveying medium, such as corrosive.

　　第三、高粘度泵所输送的介质浓度多少、比重多少。high viscosity pump how far the conveying medium concentration, specific gravity.

Fourth,

　　第四、高粘度泵所输送的介质。high viscosity pump transmission medium.

　　第五、高粘度泵输送的介质常温下是否结晶或凝固。the high viscosity pump whether the medium temperature of crystallization or coagulation.

　　第六、高粘度泵所输送的介质是否有悬浮物。the transmission medium for high viscosity pump suspension.

　　第七、高粘度泵所输送介质受温度变化情况。high viscosity pump conveying medium affected by temperature changes.

　　第八、高粘度泵所输送介质的润滑性、清洁度、腐蚀性等。high viscosity pump medium by lubricity, cleanliness, corrosion resistance, etc.

　　第九、高粘度泵要求进口压力及出口压力和安装高度。high viscosity pump inlet pressure and outlet pressure and the installation height.

　　第十、高粘度泵使用场合的防爆要求。high viscosity pump occasions of explosion-proof requirements.

   ●高粘度泵的安装调试步骤High viscosity pump installation and debugging steps

   高粘度泵是输送高粘度液体的齿轮泵，应做到在较低的功耗、较少的泄漏、较大的压力下输出 多的流量。在确定所要输送的介质时，应该严格遵循产品说明书上的规定，尽量使用厂家推荐的流体介质，并注意考虑系统的工作温度范围。当希望在某一较宽的温度范围内使用时，输送介质的粘度指数应该高些。输送介质不仅是能量传递的中介，而且也是润滑、密封及传热介质。液体粘度过高会增加内摩擦阻力，降低输出功率，浪费能量，并产生过高的系统温度.高粘度齿轮泵的出口管路上应当设置安全阀等保护装置，这样一旦泵的出口通道发生堵塞，就可以打开安全阀卸压。对于需要正反转的高粘度齿轮泵，其进出口管路上均需设置安全阀。

　　1、工作压力的选定1, select the work pressure

　　高粘度泵额定的压力是指泵连续工作时的许用压力，而其工作压力则决定于外部负载，高粘度泵(聚氨酯泵,纸浆泵,粘合剂泵)的安装和调试 的寿命与其工作压力直接相关。对于不频繁工作的齿轮泵，其工作压力可取为泵的额定压力，考虑到产品质量不同，将额定压力降低20%～30%使用。对于经常工作于较高压力下的齿轮泵，其工作压力应比泵的额定压力低1～2个压力级。石油化工设备常常是24小时连续运转，这时泵的工作压力应该取得比额定压力低得多，且工作转速也应该低于额定转速。如果高粘度齿轮泵的工作压力调整过高，则会使齿轮泵在超负荷下运行。High viscosity pump rated pressure refers to the maximum allowable pump continuous work pressure, and its working pressure is determined by the external load, high viscosity pump (pu pump, paper pulp pump, glue pump) installation and commissioning of life is directly related with work pressure. For not frequent work gear pump, the working pressure is desirable for the rated pressure of the pump, taking the quality into consideration, it is best to used pressure rated lower 20% ~ 30%. For often work under high pressure gear pump, the working pressure shall be lower than the rated pressure of the pump 1 ~ 2 pressure level. Petrochemical equipment are often 24 hours of continuous operation, and at this time of the pump working pressure should be obtained was much lower than the rated pressure, and the work speed should be lower than the rated speed. If the high viscosity gear pump high pressure adjustment, will make the pump running under overload.

　　2.安装与试运转2. Installation and commissioning

　　高粘度泵的支座或法兰与其驱动电机应采用共同的安装基础，基础、法兰或支座均需具有足够的刚度，以减小齿轮泵运转时产生的振动和噪声。电动机与齿轮泵须用弹性联轴器连接，同轴度小于0.1毫米，倾斜角不得大于1度。安装联轴器时不得用锤敲打，以免伤害齿轮泵的齿轮等零件。若用带轮、链轮等驱动时应设托架支承，以防主动齿轮轴承受径向力。紧固齿轮泵、电动机的地脚螺钉时，螺钉受力应均匀，连接可靠。用手转动联轴器时，应感觉到齿轮泵能够轻松地转动，没有卡紧等异常现象出现，然后才可以配管。高粘度齿轮泵的吸油管道内径应足够大，并避免狭窄通道或急剧拐弯、减少弯头，去除不必要的阀门、附件，尽可能地降低泵的安装高度，缩短吸油管道的长度，以减少压力损失。管接头等元件的密封要良好，以防止空气侵入，从而控制气穴与气蚀的发生。在开始运转前，往齿轮泵的壳体内灌满待输送的液体，便于安全启动。若环境温度低于冰点，应预先向泵内通入热蒸汽，进行预热处理，然后才可启动齿轮泵。齿轮泵的旋转方向要与进、出油口相符。齿轮泵若是次运行，或长期闲置后再使用，在空载或小负荷情况下先跑合一小时左右。如果在跑合阶段预先觉察出异常温升、泄漏、振动和噪声时，应机检查。High viscosity pump bearing or flange and its drive motor should use common installation basis, foundation, flange or support all needs to have enough rigidity, to reduce the vibration of gear pump is running and noise. Motor and gear pump with elastic shaft coupling, coaxial degree is less than 0.1 mm, Angle shall not be greater than 1 degree. When installing coupling hammer shall not be used, in order to avoid damage gear and other parts of the gear pump. If use the belt wheel, wheel, etc, shall set bracket support, in case of driving gear bearing by the radial force. Ground screw fastening gear pump, motor, screw force should be uniform, reliable connection. Turn the coupling with the hand, should feel can easily turn the gear pump, no abnormal phenomenon such as clamping, then can be piping. High viscosity gear pump oil suction pipe diameter should be large enough, and to avoid the narrow channel, or a sharp turn, reducing elbow, remove unnecessary valves, fittings, as much as possible to reduce the installation height of pump, shorten the length of the oil suction pipe, in order to reduce the pressure loss. Components, such as pipe joint sealed well, in order to prevent the air intrusion, thus control air-pocket and the occurrence of cavitation. Before starting operation, to gear pump casing filled with liquid, facilitate safe launch. If the environment temperature is below freezing, should advance to pump into the hot steam, preheating treatment, and then to start the pump. Direction of rotation of the gear pump, oil outlet in accord. Gear pump is the first run, or long-term idle before using, had better under the condition of no load or small load to run one hour or so. If in the running-in stage in advance detect abnormal temperature rise, leakage, vibration and noise, should machine inspection.

　　高粘度泵的出口管路上还应当设置安全阀等保护装置，这样一旦泵的出口通道发生堵塞，就可以打开安全阀卸压。对于需要正反转的高粘度齿轮泵，其进出口管路上均需设置安全阀。High viscosity of the pump outlet pipe also shall set up relief valve or other protective device on the road, so that once the clogging pump export channels, can open the relief valve pressure relief. For high viscosity gear pump need positive &negative, import and export all needs to set up the line safety valve.

    ●输送介质的优势:The advantage of the medium:

   高粘度泵可以输送高粘度、高浓度无固体颗粒或细小软颗粒的润滑性介质；效率高，性能稳定，使用寿命长。高粘度泵可以采用保温夹套结构，输送比较高的粘度物料时可以对高粘度泵进行保温，从而降低介质粘度，达到更好的输送效果，而单螺杆泵没有保温夹套结构；高粘度泵在使用一段时间后，如果泵内部间隙磨损后，不用拆泵可以自行根据高粘度泵所输送的物料粘度来调整泵的间隙，调整后和新泵一样可以达到良好的使用效果。高粘度泵可配安全阀，当泵或管路系统超压时，安全阀门打开，形成内部回流，保证系统安全。而单螺杆泵在泵本身不能设置安全阀，只能在管路中设置，提高了设备投入成本和安装成本。选择高粘度泵时必须考虑高粘度泵所输送的介质粘度，从而才能来确定高粘度泵的转速范围，根据高粘度泵的转速范围及所需工况条件下高粘度泵的正常流量范围，才能确定高粘度泵具体型号。需要注意的是一般介质可以这样来选择。High viscosity pump can transport high viscosity, high concentration without solid particles or small soft particles lubricity medium; High efficiency, stable performance and long service life. High viscosity pump can be used in a heat preservation jacket structure, transmission is higher when the viscosity of the material can be for thermal insulation in high viscosity pump, thereby reducing medium viscosity, achieve better transmission effect, and the single screw pump heat preservation jacket structure; High viscosity pump in use after a period of time, if the pump internal clearance after wear, don\'t have to dismantle the pump to according to the viscosity of material delivery by high viscosity pump to adjust the clearance between the pump and adjusted, and the use of the new pump can achieve good effect. High viscosity pump can match the relief valve, when the pump and piping system overpressure, safety valve is opened, the formation of internal reflux, ensure the safety of the system. And single screw pump in the pump itself cannot set the relief valve, can only be set up in line, increase the investment of equipment cost and installation cost. Choosing high viscosity pump must consider the conveying medium viscosity, high viscosity pump order to determine the scope of the high viscosity of the pump rotation speed, according to the working condition of high viscosity of the pump speed range and required high viscosity pump under the condition of normal flow range, to determine the high viscosity pump concrete models. It\'s important to note that it can be to choose a normal medium.

　　其中，有些特殊化学介质在一定温度下会改变其化学成分，所以需要在选择高粘度泵要特别注意泵的转速是否适合，因为泵的转速越高，正常工作中产生的热量就越大，一旦超过介质所限制的温度，那么就多所输送的介质造成了破坏。还有些食品类介质，比如果酱类，像我们日常中所食用的果酱、花生酱、豆瓣酱等，这些介质要求在输送过程中必须不能够破坏其内部的成分进行破坏，这就要求我们所选的泵的转速必须要低，才能保证高粘度泵在输送过程中不破坏所输送的介质。高粘度泵在运转过程中常常会出现卡死、抱轴转不动的现象，主要原因是高粘度泵往往都是输送的高粘度的介质，有些是有一些杂质的混合物理。如果泵的入口没有安装合适的过滤器，那么一旦大一些的硬质颗粒进入泵腔就会把高粘度泵的内外转子卡死，使泵转不动，严重的会把高粘度泵的内外转子毁掉。Among them, some special chemical medium under a certain temperature to change its chemical composition, so need to high viscosity pump in the choice whether to pay special attention to the speed of the pump is suitable for, because the higher the pump rotation speed, the greater the heat generated by the normal work, once more than media limited by temperature, then it is more than conveying medium caused damage. Also some food medium, such as the jam class, as in our daily consumption of jam, peanut butter, broad bean paste and so on, these medium requirements must be in the process of conveying can\'t destroy its internal composition, this requires that we selected the speed of the pump must be low, to ensure high viscosity pump does not destroy the transmission medium in the process of delivery. High viscosity pump in the operation process often appear stuck, holding shaft fixed phenomenon, the main reason is that high viscosity pump are often transport high viscosity medium, some are some impurities mixed in physics. If the entrance of the pump is not installed the appropriate filters, so once the larger hard particle enters the pump chamber would bring high viscosity pump rotor stuck inside and outside, make the pump turns motionless, serious will destroy high viscosity pump inside and outside of the rotor.

　　所以建议大家在安装高粘度泵的时候应该选择合适的过滤器来安装在泵的入口。高粘度泵抱轴的现象主要体现在不锈钢高粘度泵的较多，因为不锈钢材质含碳量低，所以热膨胀系数大，一旦泵的温度过高，就会造成泵的内部配件与配件之间的间隙缩小，到一定程度以后就会产生抱死现象。所以选择不锈钢材质的高粘度泵是一定要注明具体的使用温度，及介质的润滑性。介质粘度的高低与高粘度泵的转速有着密不可分的关系。如果高粘度泵输送的介质粘度过高，而所配的转速也过高的话，就会造成泵的流量很低、泵的噪音很大。如果电机功率还是按常规来配的话，那么电机也会造成过载。主要是泵的转速太高、介质粘度又太高这样就会造成泵阻力很大，电机的瞬间启动电流超过额定电流，造成电机过载；由于转速过高，使高粘度泵在运转时内部转子几乎只是形成了空转，围绕所输送介质打滑，造成吸不上料，或者是流量很小。在这种状况下，必须降低泵的转速，加大电机的功率，加大进出口的管径来减少介质的流动阻力。从而来完成介质的输送工作。转速降低以后，泵的流量会反而增加，而且泵的噪音会降低，但肯定打不到理论流量。所以如果与实际工况需要流量相差太多的话，那就只能更好型号更大一点的泵。

　　高粘度泵容易出现的另一个问题就是从动齿轮的销轴容易磨损，特别是对于输送没有润滑性的介质时，销轴磨损特别快。对此我公司改进加工工艺在原有的基础之上通过特殊设计改进给销轴配套加了一套注油润滑系统。在高粘度泵正常运转的情况下通过内转子的旋转产生的离心力形成的负压，利用注油系统通过特殊通道给销轴注油，从而解决了高粘度泵销轴磨损快的这一泵行业中存在的难题。