Disclosed is a meat grinder. According to the technical solution of this disclosure, food is placed into a processing cavity through a material inlet, and after the food is fallen to a side of a propeller away from a cutter head, the propeller is configure to propel the food to a cutter. The food is pressed against the cutter head and the food on the cutter head is cut by the cutter, and the food in discharge holes is squeeze outed by the propeller. Because the propeller is rotatably connected to the cutter head through the wear part, it may prevent an end of the propeller facing the cutter head from rubbing directly against the cutter head and causing black powder, so as to avoid the risk of contamination of the meat and affect the user's experience.

A method of maintaining a grate of a grinding mill, the method comprising the steps of gripping a worn rotable segment comprising at least one grate support element provided with a mounting flange at the outer perimeter of the grate support element configured to mount the grate support element to a shell of the grinding mill, and at least one grate panel attached to the grate support element. The method further comprises unmounting, from the outside of the grinding mill, the mounting flange of the grate support element from the shell of the grinding mill, and lifting the unmounted worn rotable segment from the grinding mill.

A refiner plate that is adapted to be attached to a rotatable refiner disc on a refiner for mechanical treatment of lignocellulosic material. The refiner plate includes a refining surface that is adapted to be arranged oppositely a second refining surface of a second refiner disc on said refiner. The refining surface is provided with a plurality of refining bars, where at least one of the refining bars is provided with cavities that are at least partially embedded in the refining bars. At least one cavity provided on the at least one refining bar have one end arranged closer to the leading edge of a refining bar and one end arranged closer to the trailing edge of the refining bar and wherein the depth dimension of the cavity at the end is smaller than the depth dimension of the cavity at the end.

A detection arrangement for detecting a wear status of a chopping knife arrangement of a chopping device provided for processing a product flow, wherein the chopping device has a revolving chopping drum receiving the chopping knife arrangement and at least one shear bar which cooperates with the chopping knives, with a sensor arrangement which has a magnetic exciter arrangement and a flux conducting device magnetically coupled thereto. The sensor arrangement provides a pole arrangement which forms at least one magnetic pole with a pole surface for conducting magnetic flux, wherein at least a portion of the chopping knife passes the pole arrangement during a rotation of the chopping drum. A voltage induced when a chopping knife arrangement passes the sensor arrangement forms the measured magnetic value, which is used by the evaluation unit to determine the state of wear of the chopping knife arrangement.

A protection system includes a mount for attachment to a wear panel of equipment. The mount includes a first portion which engages the wear panel to be protected and a second portion extending from the first portion which engages an adjacent face to be protected. The second portion has a passage which allows sliding movement of a bolt along the passage. A wear part is releasably mounted to the mount and has a first portion that slidingly engages the first portion of the mount and a second portion that engages the second portion of the mount. The second portion of the wear part has a passage arranged to align with the passage through the second portion of the mount when the wear part and the mount are engaged. A bolt extends through the aligned passages to secure the wear part to the mount via a locking member.

The present disclosure relates to a wear part made in a foundry. The wear part has a reinforced portion comprising a ferrous alloy reinforced with metal carbides, nitrides, borides, or intermetallic alloys. The reinforced portion includes inserts of metal carbides, nitrides, metal, or intermetallic compounds manufactured beforehand with a defined geometry and inserted into an infiltrable structure of agglomerated grains including the reagents needed for the formation of metal or intermetallic carbides, nitrides, borides according to an in situ self-propagating thermal reaction initiated during the casting of the ferrous alloy.

A wear-resistant element is configured to be mounted on a comminuting device or a silo. The wear-resistant element may be formed from a ceramic that comprises yttrium-stabilized, tetragonal polycrystalline zirconia (TPZ). The TPZ makes up a proportion of the ceramic of at least 60% by volume, in some cases at least 80%, or even 95% to 100%. The ceramic may have a porosity of less than 5%. The ceramic may have a ratio of monoclinic to tetragonal zirconia of 10% to 40%. An yttrium-stabilized zirconia of the ceramic may have a grain size D50 of less than 1.5 μm. The ceramic may have an yttrium content of 2 to 4 mol % Y2O3.

A wear-resistant element can be partially inserted into a recess in a surface of a wear area of a comminuting device. The wear-resistant element has a fastening region that can be connected to the recess in the surface of the wear area. The wear-resistant element may also include a wear region that protrudes at least partially from the surface of the wear area. The fastening region may comprise metal. The wear region has a shell and a core arranged inside the shell. The core is comprised of metal, and the shell is comprised of ceramic. The ceramic contains yttrium-stabilized, tetragonal polycrystalline zirconium oxide (TPZ). The TPZ makes up at least 60% by volume of the ceramic in the shell.

A grinding roll including a roll body having a cylindrical outer surface extending axially between a pair of opposite ends and a side groove formed at each end of the roll body. The side groove includes a support shoulder recessed from the cylindrical outer surface and/or from surfaces of the opposite ends of the roll body. The grinding roll includes an edge ring including a plurality of spaced receiving cavities and a plurality of wear members. Each wear member is received and retained in at least one of the receiving cavities of the edge ring. The wear members are positioned along the edge ring to define an edge of the grinding roll, and the edge ring is received within each side groove. The wear members are arranged to provide a wear protecting surface which is angled in relation to the cylindrical outer surface of the roll body. The angled wear protecting surface prevents excessive build-up of material on the grinding roll and reduces the need for maintenance.

A grinding roll including a roll body having a cylindrical outer surface extending axially between a first end and a second end and a flange attached to at least one of the first and second ends. The flange includes an outer edge that extends radially past the cylindrical outer surface of the roll body. A first surface of the flange forms a perpendicular continuing surface with the cylindrical outer surface of the roll body. A second surface of the flange forms a continuation of one of the first and second ends of the roll body. The flange includes wear protection liner elements on the first surface. The first surface of the flange includes at least one lower part adjacent the cylindrical outer surface of the roll body and at least one upper part adjacent the outer edge of the flange. The lower part includes a first type of wear protection liner elements and the upper part includes a second type of wear protection liner elements. The average covering area of the second type of wear protection liner elements is larger than that of the first type of wear protection liner elements.