进口气动隔膜泵的疑难问题

进口气动隔膜泵的疑难问题

德国KAYSEN凯森泵业有限公司

Germany Kaysen Pump Co., Ltd.

凯森泵业总代理：营派阀门（上海）有限公司

详细资料请登录：营派阀门（上海）有限公司

德国KAYSEN凯森进口气动隔膜泵概述
气动隔膜泵是目前国内颖的一种泵类。
气动隔膜泵采用压缩空气为动力源，对于各种腐蚀性液体，带颗粒的液体，高粘度、易挥发、易燃、剧毒的液体，均能予以抽光吸尽。
泵体采用四种材质，铝合金、铸铁、工程塑料、不锈钢。根据不同液体介质分别采用晴橡胶、氯丁橡胶、氟橡胶、聚四氟乙烯。以满足不同用户的需要。

主要特点：
气动隔膜泵不需灌引水，吸程高达7m，扬程达50m，产品扬程可以达到70米左右，出口压力≥7kgf/cm2; 流动宽敞，通过性能好，允许通过zui大颗粒直径达10mm。抽送泥浆、杂质时，对泵磨损甚微; 扬程、流量可通过气阀开度实现无级调节（气压调节在1-7kgf/cm2之间）; 该气动隔膜泵无旋转部件，没有轴封，隔膜将抽送的介质与泵的运动部件、工作介质*隔开，所输送的介质不会向外泄漏。所以抽送有毒、易发挥或腐蚀性介质时，不会造成环境污染和危害人身安全; 不*电，在易燃、易爆场所使用安全可靠; 可以浸没在介质中工作;
使用方便、工作可靠、开停只需简单地打开和关闭气体阀门，即使由于意外情况而长时间无介质运行或突然停机，气动不锈钢隔膜泵也不会因此而损坏，不旦超负荷，泵会自动地停机，具有自我保护性能，当负荷恢复正常后，又有自动启动运行; 结构简单、易损件少，该气动不锈钢隔膜泵结构简单，安装、维修方便，泵输送的介质不会接触到配气阀，联杆等运动部件，不象其他类型的泵因转子、活塞、齿轮、叶片等部件的磨损而使性能逐步下降; 可输送较粘的液体（粘度在1万厘泊以下）; 本泵无须用油润滑，即使空转，对气动不锈钢隔膜泵也无任何影响

进口气动隔膜泵的疑难问题

我可以用这种泵抽油墨吗？（类似的问题涉及到油漆和粘合剂，可以用类似的方式回答）。

是的，但在选择泵之前，您需要知道流体是溶剂还是水基产品。产品的粘度和温度是多少？一般来说，如果流体是溶剂型的，那么尼龙或铝合金型号的PTFE弹性体是一个不错的选择。在泵送氯化溶剂时，316不锈钢是的选择。

2.如果流体温度超过150°F，应使用哪种泵？

额定温度高达200°F的泵是PVDF型号和所有的金属泵。检查您的化学兼容性图表是否兼容。

3.如果在阻力表上找不到某种化学物质，我该怎么办？

A.询问目前使用何种材料来输送流体，或者是否有制造商对流体容器的建议等。

B.如果没有关于这种化学品的其他信息，您将需要与制造商流体，并找出什么建议。
C.不要猜测特定材料的化学兼容性。 

4.如果化学物质在化学阻力图中具有“B”等级，该怎么办？

我们不建议使用“A”级组合以外的其他任何组合。如果您选择化学物质等级为“B”，则保修无效。

5.可以使用聚丙烯和氢氟酸吗？

由于所有泵都使用天然聚丙烯，所以在咨询化学指南以获得浓度和温度限制后，可以泵送氢氟酸。

6.如果酸的浓度是用一个度数符号给出的，例如66°，这是否意味着它是66％？

学位符号表示度baume。在这种情况下，66°实际上是98％。在描述硫酸时，您会发现这个符号经常被使用。

7.是否有*用于食品应用的模型？

我们的All-P®R®型号具有电抛光和钝化316SS和FDA认证的弹性体，用于食品和卫生应用。

8.泵送有害液体时，是否有什么特别的东西要告诉客户？

是。如果隔膜破裂，排气应始终通过管道输送到控制区域 - 安全处理的地方或回到油箱 - 因为如果隔膜破裂，流体将进入空气系统。此外，在接近危险液体时，切勿忘记保护眼睛，肺部和皮肤。

9.这些泵需要使用空气管路润滑器吗？

不，不要使用空气管线润滑。

10.我听到很多关于Geolast®的信息。Geolast®具有哪种阻力？

它类似于腈橡胶（腈橡胶）。

11.我的聚丙烯泵安装在外面，开始开裂。问题是什么？

聚丙烯不耐紫外线。此外，聚丙烯限于32°F以上的温度使用。对于这种类型的应用，使用PVDF模型，金属模型或护罩，并隔离您的聚丙烯模型。

12.我可以在高于zui大额定压力的压力下操作泵吗？

否。泵将开始泄漏，隔膜可能会膨胀，内侧板可能会弯曲。

13.如何调节隔膜泵的流量？

您可以通过三种方式调节隔膜泵的流量。降低或增加空气压力，确保您处于泵的运行范围内。您可以增加或减少通过空气管路上的阀门进入泵的空气量，zui后可以打开或关闭流体排放阀。切勿限制流体吸入管路！

14.我可以淹没水泵吗？

是的，如果流体与泵壳体和紧固件兼容，并且将排气管在流体液面上方。

15.有什么方法可以延长隔膜，球和阀座的使用寿命？

清除流体中的尖锐颗粒。如果流体是磨蚀性的，则减慢抽速或转到较大的泵。不要过度加压。一般而言，泵运转越慢，所有移动部件的使用寿命就越长。

16.泵工作得很好，但速度已经放慢，我没有得到所需的容量。我能做什么？

检查流体吸入管路是否有堵塞，并检查阀座是否有碎屑。确保流体没有变得更粘稠，温度下降。

17.如何抽取高粘度流体？

如果它倾倒，你可以抽它。
A.使用大吸入管路，zui多可达泵口尺寸的三倍。
B.将泵放置在尽可能靠近（或低于）液位的位置。
C.使用空气管路阀缓慢启动流体。设定气压并缓慢打开阀门。

18.是否所有泵都具有双歧管能力？

所有的1/4“，3/8”和1/2“泵可以在工厂配置双歧管。
 

19.高比重如何影响我的泵送应用程序？

如果泵被淹没，高比重的流体可能会超过10psi的泵抽吸限制。如果泵高于流体液位，高比重将限制吸力。

20.泵送易燃液体时，是否必须将泵接地？

是。这可以通过接地片使用导电塑料泵完成。如果您不使用导电塑料泵，请将流体通过吸入口和排出口处的金属管接头进行接地。金属泵也应该接地。

21.我应该多长时间在塑料泵上拧紧紧固件？

这取决于应用程序。压力，平均使用小时数和温度都会影响塑料流动。如果发生泄漏，泵需要拧紧。紧固应该成为任何预防性维护计划的一部分，并且应该基于泵的使用责任。

22.如果我将几种化学物质混合在一起。该怎么办？我可以使用个别材料来化学阻力表中列出的化学额定值转移这种液体混合物吗？

谨慎行事。个人评分可能适用于化学鸡尾酒也可能不适用。当前流体是否正在使用特定材料成功转移？

1. Can I pump inks with this type of pump? (Similar questions are asked concerning paints and adhesives and can be answered in a similar manner).

Yes, but prior to making a pump selection you need to know if the fluid is a solvent or water-based product. What is the  viscosity and temperature of the product? Generally if the fluid is solvent based, a good choice is nylon or aluminum models with PTFE elastomers. When pumping chlorinated solvents, 316 SS models are the best choice.

2. If the fluid temperature exceeds 150°F what pump should be used?

Pumps that are rated up to 200°F are the PVDF models and all of the metal pumps. Check your chemical compatibility chart for compatibility.

3. When I cannot find a certain chemical on the resistance chart, what do I do?

A. Ask what materials are presently being used to transfer the fluid or if there is a manufacturer’s recommendation that is on the fluid container, etc.
B. If there is no other information on this chemical, you will have to check with the manufacturer of the fluid and find out what is recommended.
C. Never guess on the chemical compatibility of a particular material. 

4. What if the chemical to material has a ‘B’ rating in the chemical resistance chart?

We do not recommend that anything other than ‘A’ rated combinations be used. If you select a chemical to material rating of ‘B’ the warranty is void.

5. Can I use polypropylene with hydrofluoric acid?

Since all pumps use natural polypropylene you can pump hydrofluoric acid after consulting a chemical guide for concentration and temperature limits.

6. What if the concentration of acid is given with a degree symbol, such as, 66°, does this mean that it is 66%? 

The degree symbol means degrees baume. In this case the 66° is actually 98% in strength. You will find this symbol often used when describing sulfuric acid.

7. Is there a model recommended for use in food applications?

Our All-PũR® model has electropolished and passivated 316SS and FDA approved elastomers for use in food and sanitary applications.

8. Is there anything special that I should l the customer when pumping hazardous fluids?

Yes. If a diaphragm should rupture, the exhaust should always be piped to a control area — a place for safe handling or back to the tank — since fluid will enter the air system if the diaphragm is breached. Also, never forget to wear protection for eyes, lungs and skin when near hazardous fluids.

9. Do I need an air line lubricator for these pumps?

No, never use air line lubrication.

10. I hear a lot about Geolast®. What type of resistance does Geolast® have?

It is similar to that of Buna-N (Nitrile).

11. My polypropylene pump is installed outside and has started cracking. What is the problem?

Polypropylene is not resistant to UV rays. Also, polypropylene is limited to use in temperatures over 32°F. For this type of application it is best to use a PVDF model, a metal model or shroud and insulate your polypropylene model.

12. Can I operate the pumps at pressures higher than the maximum pressure ratings?

No.  The pumps will start leaking, diaphragms may bulge and inner plates may bend.

13. How should I regulate the flow of a diaphragm pump?

You can regulate the flow of a diaphragm pump three ways. Reduce or increase the air pressure, making sure that you are within the operating limits of the pump. You can increase or decrease the amount of air volume going to the pump via a valve on the air line and finally, a valve on the fluid discharge may be opened or closed. NEVER restrict fluid suction lines!

14. Can I submerge the pump?

Yes, if the fluid is compatible with the pump housing and fasteners and if you pipe the exhaust above the level of the fluid.

15. Is there some way that I can extend the life of my diaphragms, balls and valve seats?

Remove sharp particles from the fluid. If the fluid is abrasive, slow the pumping speed or go to a larger pump. Do not over pressurize. In general, the slower the pump operates the longer life you will have with all moving components.

16. The pump was working just fine, but it has slowed down and I’m not getting the needed capacity. What can I do?

Check fluid suction lines for obstructions and also check the valve seats for debris. Make sure that the fluid has not gotten more viscous with a decrease in the temperature.

17. How do I pump high viscosity fluids?

If it pours, you can pump it. 
A. Use large suction lines, up to three times the size of the pump ports.
B. Position the pump as close to (or below) the level of the fluid as possible.
C. Start the fluid slowly using an air line valve. Set the air pressure and crack the valve open slowly.

18. Do all pumps have dual manifold capability?

All 1/4”, 3/8” and 1/2” pumps can be configured at the factory for dual manifolds.
 

19. How does high specific gravity affect my pumping application?

If the pump is flooded, fluids with high specific gravity may exceed the pump suction limitations of 10psi. If the pump is above the level of the fluid, high specific gravity will limit suction lift.

20. Do I have to ground the pump when pumping flammable fluids?

Yes. This can be done with conductive plastic pumps via the grounding lugs. If you are not using a conductive plastic pump then ground the fluid through a metallic pipe nipple at both the suction and discharge ports. Metal pumps should also be grounded.

21. How often should I tighten fasteners on my plastic pumps?

That depends on the application. Pressure, average hours in service, and temperature all affect the flow of plastic. Pumps need tightening if leakage should occur. Tightening should be part of any preventive maintenance program and should be based on the service duty of the pump.

22. What if I mix several chemicals together. Can I use the individual material to chemical ratings that are listed in the chemical resistance chart to transfer this fluid mixtures?

Proceed with caution. Individual ratings may or may not be appropriate for a chemical cocktail. Again, is the fluid currently being transferred successfully using a particular set of materials?