A system for cleaning a dairy animal milker unit and applying dip to a dairy animal, the system includes a main control, an air supply, a water supply, a backflush fluid supply, a dip supply, a stall control for receiving the air, water, backflush fluid and dip supplies, and a safety valve that is adjacent to a downstream portion of the milker unit to control backflush and dip fluids being fed to the milker unit.

The milking machine and method of cleaning the same comprises more than one teat cup with a teat cup liner and a discharge, a pulsator with a control device, and a cleaning device to clean the teat cup by supplying cleaning liquid in the teat cup, wherein the control device is configured to adjust per teat cup, during the cleaning, the flow of the cleaning liquid through the teat cup liner and the discharge by pulsation of the teat cup liner. The teat cup liner itself acts as a valve during the cleaning. This has the advantage that a separate cleaning valve in the milk line is not required, which results in a simpler and more reliable construction.

A system for cleaning a dairy animal milker unit and applying dip to a dairy animal, the system includes a main control, an air supply, a water supply, a backflush fluid supply, a dip supply, a stall control for receiving the air, water, backflush fluid and dip supplies, and a safety valve that is adjacent to a downstream portion of the milker unit to control backflush and dip fluids being fed to the milker unit.

A system for cleaning a dairy animal milker unit and applying dip to a dairy animal, the system includes a main control, an air supply, a water supply, a backflush fluid supply, a dip supply, a stall control for receiving the air, water, backflush fluid and dip supplies, and a safety valve that is adjacent to a downstream portion of the milker unit to control backflush and dip fluids being fed to the milker unit.

A system for cleaning a dairy animal milker unit and applying dip to a dairy animal, the system includes a main control, an air supply, a water supply, a backflush fluid supply, a dip supply, a stall control for receiving the air, water, backflush fluid and dip supplies, and a safety valve that is adjacent to a downstream portion of the milker unit to control backflush and dip fluids being fed to the milker unit.

A heat recovery system arranged to heat water includes at least one heat exchanger (9) arranged to heat water by heat exchange with waste heat. A storage reservoir (11) is arranged to store water heated by the heat exchanger (9). The heat exchanger (9) is switchable between a first mode of operation in which water is circulated by a pump (12) in a circuit that includes the storage reservoir (11) and the heat exchanger (9), and a second mode of operation in which water is circulated by the pump (12) in a circuit that by-passes the heat exchanger (9). Heated water of at least a desired minimum temperature can be supplied to at least one outlet during both the first and second modes of operation.

A milking system includes two or more milking devices for extracting a milking from a dairy animal; a central utility system connected with each milking device in the milking system, and a cleaning unit for cleaning the milking devices and milk-carrying parts of the central utility system. The cleaning unit includes a fluid transporting line for transport of cleaning fluid where each of the milking devices is in fluid connection with the fluid transport line, a buffer unit for receiving and temporarily storing extracted milk where the buffer unit is in fluid connection with each of the milking devices through a milk line, and a control unit for controlling the central utility unit. The cleaning unit cleans each milking device and milk line during a cleaning cycle, and at least one of the milking devices is available for extracting milk from a dairy animal during the cleaning cycle.

A milking arrangement includes a milk transport line (1), a plurality of milk stations, and a cleaning arrangement (4) with a delivery arrangement (5) configured to deliver a cleaning liquid into the milk transport line (1) and a pump (6) configured to pump the cleaning liquid through the milk transport line (1) at a pressure larger than atmospheric pressure, thereby filling the transport line (1) with cleaning liquid. A control unit (9) is configured to determine a volume and/or length of the milk transport line (1) on basis of registered first point of time of pump start, a second point of time of passage of cleaning liquid through the milk transport line (1), and the amount of liquid introduced into the milk transport line from the first point of time to the second point of time.

A milking device is provided with milking device, a control unit, a milk line for transporting the milk from the milking device to a milk tank, a milk filter for filtering the milk passing through the milk line, and a cleaning device for the milk filter with cleaning liquid. The milk filter includes a housing surrounding a filter volume and has a milk inlet and a milk outlet, and a filter component in the filter volume. The filter component includes a circumferential plate part with filter holes, and divides the filter volume into a central inner filter volume and an outer filter volume surrounding the latter. The milk filter is configured to be flushed, in use, with the milk to be filtered from the milk inlet to the milk outlet. The cleaning device is configured to clean the milk filter by passing cleaning liquid through the milk filter in a countercurrent direction in consecutive pulses, in such a way that, in each pulse, during a first pulse stage more cleaning liquid is supplied than is discharged, and subsequently, during a second pulse stage, at least as much cleaning liquid flows from the filter volume as is supplied. As a result thereof, an amount of cleaning liquid always collects in the filter volume up to a liquid level, which surrounds at least some of the plurality of holes. The next pulse makes cleaning liquid collide with the liquid level, which improves the cleaning of the filter.

A milking device has milking means, a controller, a milk line for transporting the milk from the milking means to a milk tank, a milk filter for filtering the milk passing through the milk line, and a cleaning device for cleaning the milk filter with cleaning fluid. The milk filter comprises a housing which surrounds a filter volume and has a milk inlet and a milk outlet, and a circumferential filter body. The filter body comprises filter holes and divides the filter volume into an inner filter volume and an outer filter volume. The milk filter is configured to be flushed during use. The cleaning device is configured to clean the milk filter. The filter holes are grouped into a first group and a second group. The diameter of the holes in the first group is greater than that of the second group.