The present invention provides an air blaster 100 for removing jammed materials. The air blaster 100 includes a tank 110 filled with compressed air and a dual piston assembly 400 inside the tank 110 for triggering a blast with minimum energy loss and high impact force. The piston assembly 400 includes an inlet piston 320 connected to an outlet piston 250 with a coupling mechanism such that the inlet piston 320 and the outlet piston 250 move in tandem and pressure acting on the inlet piston 320 and outlet piston 250 pushes the assembly 400 towards top of the tank 110 thereby compressing a dampening device/spring 360. The force produced by the instant discharge of air creates a strong blast of air in the tank 110.

The present invention provides an air blaster 100 for removing jammed materials. The air blaster 100 includes a tank In 110 filled with compressed air and a dual piston assembly 400 inside the tank 110 for triggering a blast with minimum energy loss and high impact force. The piston assembly 400 includes an inlet piston 320 connected to an outlet piston 250 with a coupling mechanism such that the inlet piston 320 and the outlet piston 250 move in tandem and pressure acting on the inlet piston 320 and outlet piston 250 pushes the assembly 400 towards top of the tank 110 thereby compressing a dampening device/spring 360. The force produced by the instant discharge of air creates a strong blast of air in the tank 110.

A conveyor system (10) for transporting a transportable material (M) by means of a fluid for transporting the transportable material (M) between a first conveying line portion (11) and a second conveying line portion (12), said conveying line portions (11, 12) comprising a plurality of pipes forming a continuous conveying line (13), said system (10) comprising: a conveyor device (1) in fluid connection to one of said first or said conveying line portions (11, 12) operative to provide negative air pressure or vacuum through said conveying line (13); a material feeder device (2); wherein the conveyor device (1) comprises at least one material level sensor (1a, 1b), wherein the at least one material level sensor (1a, 1b) is used to monitor one or more material level(s) inside the conveyor device (1) and via one or more material level sensor lines (3) giving at least one material level signal (1aa, 1bb) to a controller (4) and from the controller (4) via a control signal line (5) transmit a control signal (5a) to the material feeder device (2) having a valve (6) adapted to control the amount of air injected into the system, typically the into the conveying line (13), wherein the controller (4) is adapted to control the valve (6) and/or a mass-flow (M), respectively, of the material feeder device (2) in dependence of output from the at least one material level sensor (1a, 1b) to control amount of air injected into the conveying line (13) at the feeder device (2).

A conveyor system (10) for transporting a transportable material (M) by means of a fluid for transporting the transportable material (M) between a first conveying line portion (11) and a second conveying line portion (12), said conveying line portions (11, 12) comprising a plurality of pipes forming a continuous conveying line (13), said system (10) comprising: a conveyor device (1) in fluid connection to one of said first or said conveying line portions (11, 12) operative to provide negative air pressure or vacuum through said conveying line (13); a material feeder device (2); wherein the conveyor device (1) comprises at least one material level sensor (1a, 1b), wherein the at least one material level sensor (1a, 1b) is used to monitor one or more material level(s) inside the conveyor device (1) and via one or more material level sensor lines (3) giving at least one material level signal (1aa, 1bb) to a controller (4) and from the controller (4) via a control signal line (5) transmit a control signal (5a) to the material feeder device (2) having a valve (6) adapted to control the amount of air injected into the system, typically the into the conveying line (13), wherein the controller (4) is adapted to control the valve (6) and/or a mass-flow (M), respectively, of the material feeder device (2) in dependence of output from the at least one material level sensor (1a, 1b) to control amount of air injected into the conveying line (13) at the feeder device (2).