A device for adjusting and metering of dry ice granulate for a device for mixing solid particles of dry ice with a flow of gaseous medium

Abstract

A device ( 1 ) for adjusting and metering of dry ice granulate for a device for mixing solid particles of dry ice with a stream of a gaseous medium, comprising a body ( 2 ) having a granulate input section ( 5 ) and a granulate output section ( 6 ), between which is arranged a rotary element for transporting the granulate from the input section ( 5 ) to the output section ( 6 ), wherein at least two rotary feeding elements ( 3 ) are arranged parallel to each other in the body ( 2 ), wherein a shearing member ( 4 ) is arranged between said rotary feeding elements ( 3 ), wherein the feeding elements ( 3 ) are driven into rotation such that to rotate counter-rotationally relative to the direction of passage of the granulate from the granulate input section ( 5 ) to the granulate output section ( 6 ).

1 . A device for adjusting and metering of dry ice granulate for a device for mixing solid particles of dry ice with a stream of a gaseous medium, comprising a body having a granulate input section and a granulate output section, between which a rotary element for transporting the granulate from the granulate input section to the granulate output section is arranged, wherein at least two rotary feeding elements are arranged in parallel to each other in the body, where a shearing member is arranged between said rotary feeding elements, wherein the feeding elements are driven into rotation such that to rotate against each other relative to the direction of passage of the granulate from the granulate input section to the granulate output section, where the rotary feeding elements are formed as rotary rollers comprising recesses for transporting the granulate arranged around their periphery, these recesses are oriented in the axial direction of the feeding element and are arranged in at least two rows in succession along the length of the roller of the feeding element, and each two adjacent rows of recesses for transporting the granulate are offset relative to each other, wherein a shearing member is arranged between the rotatable feeding elements, which comprises at least one shearing edge at each roller, where the position of the shearing edges relative to the rollers is in the range below the level of the connecting line (OS) of the axes of rotation of the feeding members, including the position of the shearing edges at the level of the connecting line (OS), the angle (γ) between the connecting line (OS) of the axes of rotation of the feeding elements and the face of the shearing member is in the range 0 to 45° and there is a gap (X) between the roller way and the shearing edge, the size of which is less than the smallest dimension of the granulate to be transported. 
     
     
         2 . The device according to  claim 1 , wherein device for grinding of dry ice granulate is connected to the output section of the device, where a driven grinding roller connected to a torque source is mounted in the body of the device for grinding of the granulate, where parallel to this grinding roller a rotary support body connected to a regulation for rotating this support body is arranged in the body of the device, wherein a second grinding roller is rotatably mounted in the rotary support body, off-axis of this body, continually connected via a transmission and the driven grinding roller to the same torque source.