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Whole Milk Separator

05/23/2017 5:52 PM

I am after some advice in regards to damage I have found.

The disc plates on a milk separator are showing signs of damage (cracks).

I have heard that these can be caused by back pressure, has anyone else experienced this issue and was it pressure related or was the root cause something else?

I plan to install a pressure transducer in the skim outlet line and trend the pressure reading to look for spikes.

Regards Ken.

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#1

Re: Whole milk separator

05/23/2017 6:11 PM

Separators run at a high RPM. There can be a number of reasons.

is there anything you add prior to separation to say for an example to standardize your raw milk?

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#2
In reply to #1

Re: Whole milk separator

05/23/2017 6:26 PM

Yeah sometimes Permeate or retentate (from skim milk) is added no powders are added.

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#5
In reply to #2

Re: Whole milk separator

05/23/2017 9:59 PM

Well, that put a squash on my suspicions.

dont know what type of separator, make, size, year.p. So can't help you much. But did you look at any blogs? Even the manufacturers webb site... keep in mind, company's may have merged.

http://www.dieselduck.info/forum/viewtopic.php?t=2947

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#3

Re: Whole milk separator

05/23/2017 9:31 PM

I would imagine that over time that stress cracking occurs due to metal fatigue, and varies with the design, materials and age, or hours run time on the clock, not to mention operating conditions and maintenance procedures....Can you provide pictures and age of plates?

http://dairyprocessinghandbook.com/chapter/centrifugal-separators-and-milk-standardization

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#4
In reply to #3

Re: Whole milk separator

05/23/2017 9:55 PM

That is a very good over all book for good basic information. I had that since the 90's

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#6

Re: Whole Milk Separator

05/24/2017 9:52 AM

Background... in a previous life, I had 18+ years in a large cheese plant.

We had similar issues on a couple of Westphalia separators. We decided that most likely cause was thermal shock.

We did a full analysis of the temperatures of all materials (raw milk and CIP fluids) at time of introduction to the separator vs temperature of the stainless plates on the spinner.

We found large temperature ranges, mostly in the first slug of water during the first CIP rinse. Attention to matching the fluid temperature ranges and flow rates during some early process events seemed to make a difference.

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#7
In reply to #6

Re: Whole Milk Separator

05/24/2017 10:09 AM

Interesting and practical from knowledge and experience.

out of curiosity, what company if you may?

a guess would be Saputo

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#8
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Re: Whole Milk Separator

05/24/2017 10:14 AM

Check you CR4 mail...

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#9

Re: Whole Milk Separator

06/06/2017 3:14 AM

<...has anyone else experienced this issue and was it pressure related or was the root cause something else?...> That's the best reason for getting on the

to the original equipment supplier that there ever could be. If the supplier had already solved the problem elsewhere, then the solution would be immediately at hand.

Make the call.

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