進口氣動隔膜泵的疑難問題

德國KAYSEN凱森泵業有限公司

Germany Kaysen Pump Co., Ltd.

凱森泵業總代理：營派閥門（上海）有限公司

詳細資料請登錄：營派閥門（上海）有限公司

德國KAYSEN凱森進口氣動隔膜泵概述
氣動隔膜泵是目前國內穎的一種泵類。
氣動隔膜泵采用壓縮空氣為動力源，對于各種腐蝕性液體，帶顆粒的液體，高粘度、易揮發、易燃、劇毒的液體，均能予以抽光吸盡。
泵體采用四種材質，鋁合金、鑄鐵、工程塑料、不銹鋼。根據不同液體介質分別采用晴橡膠、氯丁橡膠、氟橡膠、聚四氟乙烯。以滿足不同用戶的需要。

主要特點：
氣動隔膜泵不需灌引水，吸程高達7m，揚程達50m，產品揚程可以達到70米左右，出口壓力≥7kgf/cm2; 流動寬敞，通過性能好，允許通過zui大顆粒直徑達10mm。抽送泥漿、雜質時，對泵磨損甚微; 揚程、流量可通過氣閥開度實現無級調節（氣壓調節在1-7kgf/cm2之間）; 該氣動隔膜泵無旋轉部件，沒有軸封，隔膜將抽送的介質與泵的運動部件、工作介質*隔開，所輸送的介質不會向外泄漏。所以抽送有毒、易發揮或腐蝕性介質時，不會造成環境污染和危害人身安全; 不*電，在易燃、易爆場所使用安全可靠; 可以浸沒在介質中工作;
使用方便、工作可靠、開停只需簡單地打開和關閉氣體閥門，即使由于意外情況而長時間無介質運行或突然停機，氣動不銹鋼隔膜泵也不會因此而損壞，不旦超負荷，泵會自動地停機，具有自我保護性能，當負荷恢復正常后，又有自動啟動運行; 結構簡單、易損件少，該氣動不銹鋼隔膜泵結構簡單，安裝、維修方便，泵輸送的介質不會接觸到配氣閥，聯桿等運動部件，不象其他類型的泵因轉子、活塞、齒輪、葉片等部件的磨損而使性能逐步下降; 可輸送較粘的液體（粘度在1萬厘泊以下）; 本泵無須用油潤滑，即使空轉，對氣動不銹鋼隔膜泵也無任何影響

進口氣動隔膜泵的疑難問題

我可以用這種泵抽油墨嗎？（類似的問題涉及到油漆和粘合劑，可以用類似的方式回答）。

是的，但在選擇泵之前，您需要知道流體是溶劑還是水基產品。產品的粘度和溫度是多少？一般來說，如果流體是溶劑型的，那么尼龍或鋁合金型號的PTFE彈性體是一個不錯的選擇。在泵送氯化溶劑時，316不銹鋼是的選擇。

2.如果流體溫度超過150°F，應使用哪種泵？

額定溫度高達200°F的泵是PVDF型號和所有的金屬泵。檢查您的化學兼容性圖表是否兼容。

3.如果在阻力表上找不到某種化學物質，我該怎么辦？

A.詢問目前使用何種材料來輸送流體，或者是否有制造商對流體容器的建議等。

B.如果沒有關于這種化學品的其他信息，您將需要與制造商流體，并找出什么建議。
C.不要猜測特定材料的化學兼容性。 

4.如果化學物質在化學阻力圖中具有“B”等級，該怎么辦？

我們不建議使用“A”級組合以外的其他任何組合。如果您選擇化學物質等級為“B”，則保修無效。

5.可以使用聚丙烯和氫氟酸嗎？

由于所有泵都使用天然聚丙烯，所以在咨詢化學指南以獲得濃度和溫度限制后，可以泵送氫氟酸。

6.如果酸的濃度是用一個度數符號給出的，例如66°，這是否意味著它是66％？

學位符號表示度baume。在這種情況下，66°實際上是98％。在描述硫酸時，您會發現這個符號經常被使用。

7.是否有*用于食品應用的模型？

我們的All-P®R®型號具有電拋光和鈍化316SS和FDA認證的彈性體，用于食品和衛生應用。

8.泵送有害液體時，是否有什么特別的東西要告訴客戶？

是。如果隔膜破裂，排氣應始終通過管道輸送到控制區域 - 安全處理的地方或回到油箱 - 因為如果隔膜破裂，流體將進入空氣系統。此外，在接近危險液體時，切勿忘記保護眼睛，肺部和皮膚。

9.這些泵需要使用空氣管路潤滑器嗎？

不，不要使用空氣管線潤滑。

10.我聽到很多關于Geolast®的信息。Geolast®具有哪種阻力？

它類似于腈橡膠（腈橡膠）。

11.我的聚丙烯泵安裝在外面，開始開裂。問題是什么？

聚丙烯不耐紫外線。此外，聚丙烯限于32°F以上的溫度使用。對于這種類型的應用，使用PVDF模型，金屬模型或護罩，并隔離您的聚丙烯模型。

12.我可以在高于zui大額定壓力的壓力下操作泵嗎？

否。泵將開始泄漏，隔膜可能會膨脹，內側板可能會彎曲。

13.如何調節隔膜泵的流量？

您可以通過三種方式調節隔膜泵的流量。降低或增加空氣壓力，確保您處于泵的運行范圍內。您可以增加或減少通過空氣管路上的閥門進入泵的空氣量，zui后可以打開或關閉流體排放閥。切勿限制流體吸入管路！

14.我可以淹沒水泵嗎？

是的，如果流體與泵殼體和緊固件兼容，并且將排氣管在流體液面上方。

15.有什么方法可以延長隔膜，球和閥座的使用壽命？

清除流體中的尖銳顆粒。如果流體是磨蝕性的，則減慢抽速或轉到較大的泵。不要過度加壓。一般而言，泵運轉越慢，所有移動部件的使用壽命就越長。

16.泵工作得很好，但速度已經放慢，我沒有得到所需的容量。我能做什么？

檢查流體吸入管路是否有堵塞，并檢查閥座是否有碎屑。確保流體沒有變得更粘稠，溫度下降。

17.如何抽取高粘度流體？

如果它傾倒，你可以抽它。
A.使用大吸入管路，zui多可達泵口尺寸的三倍。
B.將泵放置在盡可能靠近（或低于）液位的位置。
C.使用空氣管路閥緩慢啟動流體。設定氣壓并緩慢打開閥門。

18.是否所有泵都具有雙歧管能力？

所有的1/4“，3/8”和1/2“泵可以在工廠配置雙歧管。
 

19.高比重如何影響我的泵送應用程序？

如果泵被淹沒，高比重的流體可能會超過10psi的泵抽吸限制。如果泵高于流體液位，高比重將限制吸力。

20.泵送易燃液體時，是否必須將泵接地？

是。這可以通過接地片使用導電塑料泵完成。如果您不使用導電塑料泵，請將流體通過吸入口和排出口處的金屬管接頭進行接地。金屬泵也應該接地。

21.我應該多長時間在塑料泵上擰緊緊固件？

這取決于應用程序。壓力，平均使用小時數和溫度都會影響塑料流動。如果發生泄漏，泵需要擰緊。緊固應該成為任何預防性維護計劃的一部分，并且應該基于泵的使用責任。

22.如果我將幾種化學物質混合在一起。該怎么辦？我可以使用個別材料來化學阻力表中列出的化學額定值轉移這種液體混合物嗎？

謹慎行事。個人評分可能適用于化學雞尾酒也可能不適用。當前流體是否正在使用特定材料成功轉移？

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-P?R® 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?