A drive device having a main drive device, a gearing, a switchable clutch, at least one hydraulic pump, and a gearing output shaft is started with low wear by providing an auxiliary drive to drive the gearing output shaft independently of the main drive device. A work machine device includes the drive device and a work machine which can be started accordingly in a low-wear manner and which enables longer-term operation in the reverse direction of rotation. Corresponding methods which are also provided in connection with the drive device and the work machine device, enable low-wear starting and the elimination of undesired operating states.

A waste grinding apparatus (101) including a rotor having a central body (13) defining at least one radial vane (15a, 15b), provided, at its end (17a, 17b) distal relative to a rotation axis (S) of the rotor (11), with a hammerhead (19) in which a first, knocker impact surface (21) adapted to operate when the rotor (11) rotates in a first, clockwise or counter-clockwise direction, and a second, wedge-shaped impact surface (23) adapted to operate when the rotor (11) rotates in a second direction opposite to the first direction, are defined.

A waste grinding apparatus (101) including a rotor having a central body (13) defining at least one radial vane (15a, 15b), provided, at its end (17a, 17b) distal relative to a rotation axis (S) of the rotor (11), with a hammerhead (19) in which a first, knocker impact surface (21) adapted to operate when the rotor (11) rotates in a first, clockwise or counter-clockwise direction, and a second, wedge-shaped impact surface (23) adapted to operate when the rotor (11) rotates in a second direction opposite to the first direction, are defined.

A mulching apparatus including: a housing including a front opening and an inner wall; a rotor mounted in the front opening of the housing adjacent to the inner wall; and a liner mounting system for mounting a replaceable wear liner between the rotor and the inner wall, the liner mounting system including: an upper mounting provided at an upper edge of the inner wall, the upper mounting configured to releasably connect with the wear liner; and a lower mounting provided at a lower edge of the inner wall, the lower mounting configured to support the wear liner against the upper mounting and secure the wear liner to the inner wall.

A distribution member may include a distributing plate, a plurality of protecting plates and a second protecting plate. The distributing plate may be connected with a vertical shaft of the vertical shaft impact crusher. The distributing plate may have a first distributing surface having a conical shape, and a second distributing surface. The first protecting plates may be attached to the first distributing surface of the distributing plate. The second protecting plate may be attached to the second distributing surface of the distributing plate. Thus, the distribution member may be semi-permanently used by properly exchanging any one of the first protecting plates and/or the second protecting plate.

A pulverizer for reducing a size of input material particles having a housing, a rotatable shaft with rotor arms and at least one airflow deflector cooperating with the rotor arms to deflect airflow within the pulverizer so as to form at least two overlapping vortices within the interior chamber such that input material particles in suspension in both overlapping vortices collide with each other to be thereby pulverized. The pulverizer also having a housing liner including a plurality of housing liner portions attached to and extending along a outer structural wall of the housing. The pulverizer also having a housing sidewall having an outer structural wall with a plurality of wall sections. The pulverizer also having canted rotor arms and rotor arms with removable wear pads. An anti-caking device for a vessel such as a pulverizer is also provided.

A pulverizer for reducing a size of input material particles having a housing, a rotatable shaft with rotor arms and at least one airflow deflector cooperating with the rotor arms to deflect airflow within the pulverizer so as to form at least two overlapping vortices within the interior chamber such that input material particles in suspension in both overlapping vortices collide with each other to be thereby pulverized. The pulverizer also having a housing liner including a plurality of housing liner portions attached to and extending along a outer structural wall of the housing. The pulverizer also having a housing sidewall having an outer structural wall with a plurality of wall sections. The pulverizer also having canted rotor arms and rotor arms with removable wear pads. An anti-caking device for a vessel such as a pulverizer is also provided.

An impact processing device has a central impact mechanism that rotates about a rotation axis and a processing stage that includes the impact mechanism and a structure extending circumferentially about the impact mechanism. The structure has a processing sector, and a screening sector. The processing sector extends for a first circumferential portion of the structure and has an impervious textured surface. The screening sector has a plurality of holes and extends for a second circumferential portion of the structure. The impact mechanism is operable to impact material against the processing sector and generate a flow of the impacted material to screening sector through which at least a portion of the impacted material can pass.

An impact processing device has a central impact mechanism that rotates about a rotation axis and a processing stage that includes the impact mechanism and a structure extending circumferentially about the impact mechanism. The structure has a processing sector, and a screening sector. The processing sector extends for a first circumferential portion of the structure and has an impervious textured surface. The screening sector has a plurality of holes and extends for a second circumferential portion of the structure. The impact mechanism is operable to impact material against the processing sector and generate a flow of the impacted material to screening sector through which at least a portion of the impacted material can pass.

A mill system for reducing the material size of input material, the system including a plurality of strike plates, preferably of ceramic, embedded within an interior layer of a housing, wherein the interior layer includes tiles made preferably of ceramic; a rotor having one or more rotor blades; a driveshaft; and a motor; wherein the motor powers the drive shaft to rotate the rotor; wherein the rotor blades move input material against the plurality of strike plates.