An impulse mechanism for use with a vibratory screen includes a rotatable shaft having exposed opposing ends terminating outside the vibratory screen, a stationary spindle surrounding the opposing ends of the shaft, and vibration generators located on each of the opposing ends of the shaft that generate vibrations when the shaft is rotated. Each vibration generator includes a bearing housing that rotates with the shaft, an exposed mass component mounted to the bearing housing is accessible from outside the bearing housing and rotates about the shaft to generate vibrations, and a bearing assembly located within the bearing housing transmits vibrations from the rotating mass component to the vibratory screen assembly.

A mineral material processing plant and a method for controlling thereof. The mineral material processing plant includes at least one motor, at least one actuator, a control system, an arrangement for holding the operating speed of the at least one actuator substantially unchanged. The control system is configured to control the processing plant in such a way that a change of amount and/or quality of material arriving to be processed is recognized and in response to the recognized change of amount and/or quality of the material arriving to be processed, the load of a motor is recognized, and in response to the recognized load of the motor, the running speed of the motor or motors of the mineral material processing plant is increased or decreased so that the operating speed of at least one actuator is held substantially unchanged.

Disclosed is an inclined mobile screen for processing road building materials which provides for easy reconfiguration of the screen from operation configuration to a transport configuration and to a maintenance configuration, which allows for increased clearance between the screen and a feed conveyor without requiring a hydraulic actuator disposed therebetween. Nested telescopic supports are selectively coupled together in an offset connection to allow changes in the orientation of the screen to result in changes in the separation between the screen and the conveyor so as to allow for more clearance therebetween during time of maintenance.

Systems, methods and computer readable media for material separation and conveying using tuned waves are disclosed.

Systems, methods and computer readable media for material separation and conveying using tuned waves are disclosed.

A screening apparatus includes a vibrating screen assembly that includes a screen and a vibrating mechanism operable on the screen to cause vibration of the screen, the screen having a feed end and a discharge end. At least one shield member is positioned on the screen and is configured to cover part of the screen between the feed end of the screen and a position intermediate the feed and discharge ends of the screen, such that particulate material for screening by the screen can be fed on to the, or each, shield member, the, or each shield member being positioned on the screen so that a vibrational pattern of the screen is imparted to the shield member. An adjustment mechanism is operatively engaged with the, or each, shield member to adjust a position of a discharge end of the, or each, shield member relative to the discharge end of the screen.

A screening apparatus includes a vibrating screen assembly that includes a screen and a vibrating mechanism operable on the screen to cause vibration of the screen, the screen having a feed end and a discharge end. At least one shield member is positioned on the screen and is configured to cover part of the screen between the feed end of the screen and a position intermediate the feed and discharge ends of the screen, such that particulate material for screening by the screen can be fed on to the, or each, shield member, the, or each shield member being positioned on the screen so that a vibrational pattern of the screen is imparted to the shield member. An adjustment mechanism is operatively engaged with the, or each, shield member to adjust a position of a discharge end of the, or each, shield member relative to the discharge end of the screen.

Screening machine (10) for screening solid materials, comprising a screening box (12) shaped so as to have a plurality of perimeter walls (16, 17, 19, 21), an upper wall (15) and an opposite bottom wall (13), in order to make said solid materials to be screened flow inside it. Said screening machine (10) comprises at least one active anti-propagation device (24) integral with said screening box (12).

Disclosed herein is a system for detecting, removing, transferring and recovering an incompletely dried material. The system includes a transfer device transferring the material subjected to a drying process, a load cell measuring a weight of the material transferred through the transfer device, a material receiving unit receiving the measured material from the load cell when the weight of the measured material is higher than weights of other materials or a preset reference weight, a thermal imaging camera photographing the material received by the material receiving unit, an incompletely-dried-material determining unit acquiring temperature information of the material photographed by analyzing image data photographed by the thermal imaging camera, and determining whether the photographed material is an incompletely dried material based on the acquired temperature information, and an incompletely-dried-material receiving unit receiving the incompletely dried material from the material receiving unit.

Screening machine (10) for screening solid materials, comprising both a screening box (12) shaped so as to have a plurality of perimeter walls (16, 17, 19, 21) and an upper wall (15), and configured to make said solid materials to be screened flow inside it, and also a plurality of anti-propagation devices (27), at least a first of which is disposed on said upper wall (15).