Dedicated device for shattering phenolics with mechanochemical synthesis and shattering method thereof

A shattering method used in a dedicated device for shattering phenolics with mechanochemical synthesis, the dedicated device comprising:

• a supporting frame;
• a primary shattering device, comprising:
• a shattering box mounted on the top of the supporting frame;
• a feeding inlet and a bottom opening being arranged at the shattering box;
• a first motor mounted on the top of the supporting frame;
• a first transmission rod rotationally mounted on the supporting frame, the first transmission rod being arranged in the shattering box and parallel to the axial direction of the shattering box;
• the first motor being used for driving the first transmission rod to rotate;
• a plurality of tool frames fixed on the side wall of the first transmission rod and arranged around the first transmission;
• a plurality of blades respectively corresponding to the tool frames;
• each blade being mounted on the corresponding tool frame;
• at least one screen mesh;
• the screen mesh being cylindrical, connected to the bottom opening and forming a shattering space with the shattering box;
• a plurality of fixed cutters, which being mounted on the inner wall of the screen mesh, in an arc shape and having a plurality of cutting strips distributed in the radial direction of the screen mesh;
• and
• a guide hopper;
• each blade passing through the screen mesh and two adjacent fixed cutters to impact, squeeze, stir, vibrate and shear the phenolic plastics entering from the feeding inlet, and the phenolic plastics passing through the screen mesh entering the guide hopper;
• a secondary shattering device, comprising:
• a first roller;
• a second roller;
• the first roller and the second roller being rotationally mounted on the supporting frame, and the rotation shafts of the two rollers being arranged in parallel, and separated from a shattering gap located below the guide hopper;
• a second transmission rod;
• and
• a set of helical gears;
• the first motor driving the first roller or the second roller to rotate through the second transmission rod and the helical gears, so that the phenolic plastics falling from the guide hopper being squeezed, cut and grinded in the shattering gap;
• a three-stage shattering device, comprising:
• a second motor;
• a set of tapered blade sets;
• the tapered blade sets comprising a conical internal cutter and a conical external cutter;
• the conical external cutter being mounted on the supporting frame and moving along the axial movement of the conical external tool;
• a plurality of inner cutter teeth arranged around the central axis of the conical external cutter being arranged on the inner wall of the conical external cutter;
• the inner cutter teeth being bent inclined downward, and the protrusion degree from top to bottom being gradually reduced;
• and
• a plurality of strain sensors;
• the strain sensors being mounted at the tooth root of the conical external cutter, and being uniformly distributed in the ring, and used for detecting the stress of the phenolic plastics falling into the shattering space from the shattering gap for transverse shearing and longitudinal extrusion;
• and
• an automatic regulating device, being used for adjusting the distance between the conical internal cutter and the conical external cutter by driving the conical external cutter up and down, so as to adjust the stress of the phenolic plastics in the shattering space;
• wherein the shattering method comprising following steps:
• detecting the stress of the phenolic plastics falling into the shattering space from the shattering gap for transverse shearing and longitudinal extrusion;
• determining whether the stress being located in a preset interval;
• when the stress being less than the lower limit of the preset interval, driving the conical external cutter up and down to reduce the distance between the conical internal cutter and the conical external cutter;
• when the stress being greater than the upper limit of the preset interval, driving the conical external cutter up and down to increase the distance between the conical internal cutter and the conical external cutter;
• and
• when the stress being in the preset interval, maintaining the distance between the conical internal cutter and the conical external cutter.