Increasing Milk Machine Wash Effictiveness

Discussion in 'Stock Talk' started by aidank, Feb 14, 2020.

  1. aidank

    aidank Well-Known Member

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    I had the following pet project in mind to increase the effectiveness of the hot wash in my milking machine, however it seems a bit too easy for someone not to be using the process, I was wondering am I missing something.

    Background: Simple Alfa Parlour, 10unit with ACRs. 2" milk and wash line, double diaphram milk pump.

    Washup as follows
    -Rinse with cold water, would put in 100L of cold water.
    -Hotwash with Hydrosan detergent, in 75l of water, I use water from the mains, hot water starts at 75C and then I leave the whole lot circulating for 10mins.
    -Then rinse the whole plant with 200L of water.

    -Milk Filter removed for wash cycle, handwashed, and then put recycled for the evening wash and then dumped.

    One thing Id like to change is - water always pools at the back two units in my parlour so they see most of the hot wash, was wondering is there a way of balancing that.


    A little pet project I had in my head for the wash trough to make a more vigorous wash I was thinking about is as follows.

    -Place a Tee on the suction pipe, thats the pipe which sucks the water from the wash trough, and put a solenoid valve on the Tee end of this fitting, and have it open to the fresh air. When the solenoid valve is open only air will be pulled into the wash line.
    -Install a float switch same as on a submersible pump in the wash trough, the float switch will make when wash trough is 50% full and break when wash trough is empty.
    -Have the float switch control the Solenoid valve such that when wash trough is 50% full solenoid valve closes, the suction line will now empty the wash trough rapidly giving a v vigorous wash. When wash trough is empty float switch breaks and solenoid valve opens. With the solenoid valve open, there will be no suction, and only air will be pulled through the wash line, chasing all the water out into the clusters. This will then allow the water to circulate through the plant and back to the wash trough, when wash trough fills up 50% then solenoid valve closes and the cycle repeats.

    Am I missing something as my project is relatively easy & cheap ? indeed so easy and cheap everyone would be doing it if it is as good as it appears.
     
  2. kverneland es 80

    kverneland es 80 Well-Known Member

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    Will the vac drop too much when only air is being pulled through the plant
     
  3. aidank

    aidank Well-Known Member

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    I dont think it should, my solenoid valve will act the same as taking the suction pipe out of the wash trough and letting the water flow back to the wash trough and then putting the scution pipe back in the wash trough.

    Even if it does drop Does it matter, the purpose of the vac is to suck the water from the wash trough, up through the clusters, through the milk line and into the milk jar, after that its the pump does the rest.
     
    Last edited: Feb 14, 2020
  4. kverneland es 80

    kverneland es 80 Well-Known Member

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    I recon that way the vac will drop too fast I could be wrong tho
     
  5. fiatagri10090dt

    fiatagri10090dt Well-Known Member

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    Vacuum is away lower when washing if ur going below 46 ur losing effective Ness water went be going fast enough.
     
  6. aidank

    aidank Well-Known Member

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    After some thought, think I might update my project as follows.

    -Place a solenoid valve on the suction pipe, thats the pipe which sucks the water from the wash trough. When the solenoid valve is open water will be sucked into the wash line.

    -Install a float switch same as on a su
    bmersible pump in the wash trough, the float switch will make when wash trough is 50% full and break when wash trough is empty.
    -Have the float switch control the Solenoid valve such that when wash trough is 50% full solenoid valve opens, the suction line will now empty the wash trough rapidly giving a v vigorous wash. When wash trough is empty float switch breaks and solenoid valve closes.

    I was wondering - What will happen to the detergent mix in the wash line and milk line if I close off the suction pipe for 20secs while waiting for the detergent mix to return to the wash trough


    To those of you that use autowashers is that how it works ? - The wash trough is emptied out, the suction cut off until the detergent has returned to the wash trough and the cycle repeats. OR with an autowasher is there continuous suction from the wash trough during the wash cycle
     
  7. kverneland es 80

    kverneland es 80 Well-Known Member

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    its continuous on ours ,not a big fan of it
     
  8. aidank

    aidank Well-Known Member

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    do you mind if I ask more details on why your not a big fan
     
  9. scoffcruddle

    scoffcruddle Well-Known Member

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    The detergent mix will still suck through the system due to the claws having vents.

    The trouble with continuous suction is if the wash trough is empty your sucking up air,air cools your water.
     
    kverneland es 80 likes this.
  10. inthepit

    inthepit Member

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    If you experiment a bit with the amount of water in the trough you could get a similar result.
    I found that if the trough empties and the machine draws air for 5 to 10 seconds it flushes the detergent through faster and won't loose much vacuum.I doubt if it would cool it down too fast.
     
  11. aidank

    aidank Well-Known Member

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    I agree on the negative effect of continuous air.
     
  12. scoffcruddle

    scoffcruddle Well-Known Member

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    I ensure my plant only sucks air as it finishes the wash,think about blowing on hot food sucking in air is just the same.
     
    Paw likes this.

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