Fluorine plastic magnetic pump, fluorine plastic alloy magnetic pump, fluorine plastic magnetic centrifugal pump failure analysis and solution

Fluorine plastic magnetic pump repair is very frequent, cause environmental pollution, the high cost of maintenance, the serious influence to the safe and stable operation of the workshop production device. This article mainly CQB series fluoroplastic magnetic drive centrifugal pump as an example, analyses the reason of the equipment malfunction and solution.

a, fluorine plastic magnetic centrifugal pump failure analysis (

1) Fluorine plastic centrifugal pump in use process, export flow, hm is lesser, can't meet the needs of the normal production. Analysis reason, pump suction pipe is higher than the pump installation height of pump cavity filled with material exclusion caused by centrifugal pump gas fu phenomenon cannot normal conveying material, check the import and export pipeline clean, check the magnetic couplings in good condition, finally will pump after the collapse of large particles impurities clogging impeller found within the material, as shown in figure 2, figure 3.

       ( 2) Fluorine plastic magnetic pump when use suddenly outlet pressure to zero, not feeding pump apart export check for normal pressure gauge pressure gauges, at the same time to check and complete motor phase phenomenon, open motor check magnetic couplings and no wear, no loose coupling, the magnet. Eventually determine failure is pump head part, so the open pump head found that the dynamic and static ring wear serious, has burned, the pump shaft fracture, as shown in figure 4, figure 5.

       ( 3) Material from the leak of sleeve, head of pump impeller clearance changes through the water pump head shaking, has not heard the sound of impeller string move, note the pump head clearance change, apart the discovery after sealing ring wear, caused by bearing inner material and the autopolymer stuck pump shaft. As shown in figure 6 and figure 7.

above three kinds of circumstances is the workshop in the most frequently appeared in the process of using magnetic pump failure. At the same time because of its conveying medium with strong toxicity and volatile, probably in the process of repair materials and volatile lead to maintenance staff inhalation poisoning, caused the serious accident. In recent years, with the constant improvement workshop production load, magnetic pump running stability is worse and worse, the maintenance cost is higher and higher, has seriously affected the normal production workshop equipment. How to reduce the maintenance frequency magnetic pump, magnetic pump is increased stability is imminent.

2, fluorine plastic magnetic centrifugal pump solution

for all damage by magnetic pump after the disintegration of the whole analysis, the main cause of the malfunction magnetic pump is the medium in the process of conveying the poly autopolymer generating large particles extremely easily, and magnetic pump impeller adopts closed impeller, the impeller two plate spacing is small, large particles autopolymer on the impeller rotates under the action of centrifugal force can't pass hub into the pump discharge, adhesion between two impeller cover plate, after the long running autopolymer accumulation is the more big particles cause impeller jams, causing no feeding, pump shaft rupture and leakage fault. Aiming at the cause of the problem, put forward the following solutions:

1) Choose one of them at the inlet piping equipped with magnetic pump basket type filter, the larger particles autopolymer filtered out. Run for a period of time after the magnetic pump failure rate declined, but another problem filter often jams, is now a clear in time after the filter clogging cause the idling of break burned magnetic pump. By adding the import pipe to filter, magnetic pump failure rate has not been solved effectively.

       ( 2) Due to the underlying reason is that the impeller pump failure caused by congestion, so consider to retrofit the impeller. Centrifugal pump impeller structure is mainly divided into: closed impeller, three kinds of half open impeller, open impeller, and closed impeller can't normal use, under the condition of half open impeller and open impeller are used in conveying viscous and medium containing solid particles. Open impeller conveying efficiency, low energy loss, practicality is not high, the economic efficiency of half open impeller is higher than open impeller, lower than the closed impeller, economic sex is stronger than open impeller, thus determine the magnetic pump impeller by closed retrofit of half open impeller. For centrifugal water pump impeller and the pump shell, if the impeller structure also need to change the pump casing size accordingly. But to improvement of the impeller and the pump shell, and finally in the meet the needs of the workshop production flow, hm process parameters, such as conditions, choose one of the highest a maintenance times magnetic pump to improve the impeller and pump casing size. Impeller by modified magnetic pump put into use after half a year to run a stable no maintenance record. Show the improvement, has been successfully reduced magnetic pump failure rate. The improved impeller and the pump shell as shown in figure 8

fluorine plastic magnetic pump impeller was improved after operation to December, track running situation, half a year to run a stable not present maintenance record. Will open after the collapse of magnetic pump, the impeller was observed, machine cleaner, a thin layer adhered on the surface of the pump shaft and bearing autopolymer, other parts in good condition, can continue to use, after showing the overhaul technological upgrading magnetic pump get completely solve the high failure rate. The overhaul technological upgrading, completely reduces the magnetic pump failure rate, reduce equipment maintenance costs in the workshop, improve equipment intact rate, ensure the long-term stable operation of device in the workshop week

Clouds of winter cover pump failures surround the world of pool cover drain pump in particular, simply because people don’t pay as much attention to the submersible pump as they should do.
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