74 | nzdairy DAIRY SERVICES » School of food Advanced Technology • from page 76 assuredly cold and free of air. Richard explains that because milk arrives cold at the vat, there’s no big dimple pad full of refrigerant, and no need for a big agitator to drive milk over that cold floor. “Instead we drive a tiny axial agitator at a tenth the power to keep the milk rolling over and cream from rising. We still need roughly the same refrigeration in kWh terms but can make do with a smaller and more compact unit with a tiny charge of refrigerant. Ideally it will be a compact sealed unit that can’t leak.” A lot of cold water (with some glycol in it) is needed during each milking. But that can be achieved from ice made over 24 hours if desired. “The refrigeration load is well down in kW terms. You can use the same or a smaller condenser unit as now, or one instead of two. Electrical power draw may be down enough to keep the old feeder lines working for a few more years or even enough to shift the shed off grid.” The new vat will have a waistline set by the wide load transport rules and structure set by seismic rules. It will feature bonded insulation where inner and outer sheets of stainless plus rigid insulation between make up a strong panel. “Every surface will be curved but with symmetry to simplify manufacture. And it will look the part.” “We still need roughly the same refrigeration in kWh terms but can make do with a smaller and more compact unit with a tiny charge of refrigerant. Ideally it will be a compact sealed unit that can’t leak.” Farm milk vats today. Engineering the right outcome Reliable, Reputable, Respectful — These are the core values at the heart of customer service and product design at John Brooks Ltd. A third-generation engineering company, for over 55 years John Brooks has been supplying world leading brands to support many New Zealand industry sectors, including manufacturing, food processing, machine builders, wineries, agriculture and dairy farms. Helping industrial companies move their products at di erent speeds and di erent torque requirements is a fundamental principle for John Brooks Ltd. “To achieve this our core product is the electric motor from di erent power 1ph, 3phase AC to 24V – 180V DC, including rotational and linear, induction to servo,” says Managing Director Karl Brooks. “We then transmit this power through gearboxes, sanitary pumps, pulleys and V-belts. Control of the electric motor is through variable speed drives and controllers and we can automate these steps with HMI interfaces, PLC and other control circuits. John Brooks also manufactures its own range of pump controllers.” John Brooks was one of the irst companies to introduce pump control technology into the New Zealand market by listening to dairy farmers and pioneering their installation. John Brooks’ milk and vacuum pump controllers have been used extensively in New Zealand for over 30 years as well as exporting them to the United Kingdom, China and Australia. “The products we supply are designed to allow dairy farmers to respect their craft of producing high quality world renowned milk while saving time and e ort through automation. We o er two of the fastest ROI pump controllers on the market, saving the farmer electricity every milking session by matching the pump to meet the exact demand required and reduce wasted energy whilst respecting the movement of milk gently to your cooling vat.” The BMP -E - Economic Milk Pump controller can be a new unit or an upgrade to an existing older unit. The variable pump low-rates out from the receiving can helps pump milk through heat exchange to reduce the temperature as low as possible and therefore help reduce refrigeration and energy costs. Lowering the temperature quickly improves milk quality and increases payout. The BVP - E – Economic Vacuum Pump Controller has been delivering a high level of energy e iciency and control for various types of Vacuum Pumps used throughout the Dairy Industry. Dairy-Vac’s purpose-built controller manages and controls the automation requirements of the modern dairy shed, controlling the vacuum stability with very fast reaction times while o ering up to 70% in energy saving and signi icant noise reduction. Using BVP E o ers immediate electricity payback and high levels of depreciation due to CPU chips, which lead to tax savings. With fully stocked warehouses in Auckland, Wellington and Christchurch John Brooks has a team of 30 employees including sales engineers looking after every region in New Zealand. “Not only do we provide industrial automation products to multiple New Zealand industries but we partner with a range of local dairy dealers and distributors throughout New Zealand for service and installation in the rural areas,” adds Karl.
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