Method of washing meat carcass parts such as cattle carcass halves, and a washing device

A method of washing meat carcass parts while the carcass parts while the carcass parts are suspended from an overhead conveyor and are being conveyed in a conveying direction along a processing path,

• wherein the method is executed using a washing device comprising a first spraying device provided on a first side of the processing path, a second spraying device provided on a second side, opposite the first side, of the processing path, wherein the first spraying device and the second spraying device each have multiple nozzles, and the washing device further has respective pivoting devices for pivoting nozzles of the multiple nozzles of the first spraying device and of the second spraying device in a reciprocating manner;
• wherein the following steps are executed repetitively using the washing device:
• a) supplying pressurized washing liquid to the multiple nozzles of the first spraying device and of the second spraying device such that the carcass part is being sprayed with the washing liquid from opposite sides while the carcass part passes between the spraying devices while conveyed in the conveying direction, wherein the washing liquid is provided to at least some of the multiple nozzles of the first spraying device at a higher liquid pressure than a lower liquid pressure at which washing liquid is provided to the multiple nozzles of the second spraying device;
• and
• b) pivoting nozzles of the multiple nozzles of the first spraying device and of the second spraying device in a reciprocating manner, using the respective pivoting devices;
• wherein a first pivoting device of the first spraying device includes a crank-coupler for pivotally reciprocating a first set of pivoting nozzles and a second set of pivoting nozzles;
• and
• wherein a second pivoting device of the second spraying device includes a vertical crank for translating a second set of pivoting nozzles.