Hydro excavation vacuum apparatus that process spoil material onboard the apparatus by separating water from the cut earthen material are disclosed.

Hydro excavation vacuum apparatus that process spoil material onboard the apparatus by separating water from the cut earthen material are disclosed.

A spring assembly includes a coil spring having one or more helical coils between two longitudinally spaced ends, and an attachment site disposed at at least one of the longitudinally spaced ends. The attachment site includes a casing enclosing the at least one of the longitudinally spaced ends, the casing having a casing passage therethrough between a first side and a second side. The attachment site also includes a washer disposed on the first side and having a washer passage aligned with the casing passage, and a base disposed on the second side and having a base passage aligned with the casing passage.

In a sieve apparatus, a housing (1) is provided with an inlet section with a feed inlet for material to be sifted and a discharge section including at least one outlet. Means are provided for vibrating the screen mesh. The housing has two substantially vertical side walls (2), and a screen mesh (5) having at least one side edge (51) is supported by a support structure (6, 7) connected to the respective side wall (2). The support structure includes a support element (7) along each side wall and adapted to support the screen mesh (5). Each support element is provided as a support profile (7) having an inclined support surface (73) for the side edge (51) of the screen mesh and constituting a V-shaped structure protruding into the housing, said support surface (73) meeting a lower surface (74) in an apex (75) located at a distance from the side wall (2) inside the housing (1). Specifically, each V-shaped support profile (7) is formed as an integral part of the respective side wall (2).

In a sieve apparatus, a housing (1) is provided with an inlet section with a feed inlet for material to be sifted and a discharge section including at least one outlet. Means are provided for vibrating the screen mesh. The housing has two substantially vertical side walls (2), and a screen mesh (5) having at least one side edge (51) is supported by a support structure (6, 7) connected to the respective side wall (2). The support structure includes a support element (7) along each side wall and adapted to support the screen mesh (5). Each support element is provided as a support profile (7) having an inclined support surface (73) for the side edge (51) of the screen mesh and constituting a V-shaped structure protruding into the housing, said support surface (73) meeting a lower surface (74) in an apex (75) located at a distance from the side wall (2) inside the housing (1). Specifically, each V-shaped support profile (7) is formed as an integral part of the respective side wall (2).

A single shaft material processing vibrating screen is described which provides for non-circular acceleration (elliptical and otherwise). The system includes a main eccentric is rotated a first direction and a secondary eccentric orbits the main eccentric in an opposite direction.

The orbiting is accomplished by either long and short arms or by eccentric flywheels. The size and shape of elliptical/non-circular motion is adjustable by varying mass of main and secondary eccentrics, length of long and short arms or the size of eccentric flywheels.

A single shaft material processing vibrating screen is described which provides for non-circular acceleration (elliptical and otherwise). The system includes a main eccentric is rotated a first direction and a secondary eccentric orbits the main eccentric in an opposite direction.

The orbiting is accomplished by either long and short arms or by eccentric flywheels. The size and shape of elliptical/non-circular motion is adjustable by varying mass of main and secondary eccentrics, length of long and short arms or the size of eccentric flywheels.

An object-sorting apparatus includes a vibration base that includes a vibration element. The object-sorting apparatus also includes a plurality of stages stackable on the vibration base, wherein at least one of the stages includes walls defining a central opening, and a sorting floor that cooperates with the walls to form a receptacle. The sorting floor includes a plurality of apertures defined in and extending through the sorting floor and into flow communication through the central opening with a next lower one of the plurality of stages. The apertures of the at least one stage are sized to receive therethrough objects having a size smaller than a target size associated with the at least one stage.

An object-sorting apparatus includes a vibration base that includes a vibration element. The object-sorting apparatus also includes a plurality of stages stackable on the vibration base, wherein at least one of the stages includes walls defining a central opening, and a sorting floor that cooperates with the walls to form a receptacle. The sorting floor includes a plurality of apertures defined in and extending through the sorting floor and into flow communication through the central opening with a next lower one of the plurality of stages. The apertures of the at least one stage are sized to receive therethrough objects having a size smaller than a target size associated with the at least one stage.

An oscillatory separation device comprises a base, an elastic support, a shell assembly, a screen mesh, a discharge port and an opening element, one end of the support is disposed on the base, the shell has first and second spaces communicating with each other and capable of accommodating a sieved object, a lower part of the shell is combined with another end of the support, the screen mesh is placed in the shell to separate the first and second spaces, and is detachably assembled with the shell, the discharge port is formed on an outer circumference of the shell and communicates with the first space, so that the sieved object can be discharged externally through the discharge port, the opening element is disposed on the shell and communicates with the first and second spaces, and the sieved object is thrown into the shell through the opening element.