Adjustable static classifier

A static classifier comprising:

• a vessel having an inlet and a vessel outlet and having a vessel interior area;
• a classifier chamber positioned in the vessel interior area, the classifier chamber having a plurality of openings extending through a side wall of the classifier chamber and into a classifier interior area of the classifier chamber, the plurality of openings being configured for passing particles entrained in a gas from the vessel interior area into the classifier interior area;
• and
• a first flow restrictor and a second flow restrictor each being arranged with the classifier chamber;
• the first flow restrictor and the second flow restrictor each being configured to establish a flow velocity of the particles entrained in the gas, through the static classifier;
• wherein the second flow restrictor comprises a vane pivotally arranged to the side wall of the classifier chamber proximate each of the plurality of openings;
• and
• the first flow restrictor comprises at least one cover removably secured over at least one of the plurality of openings, the at least one cover being located in the vessel interior area.

A static classifier comprising:

• a vessel having an inlet and an outlet and having a vessel interior area;
• a classifier chamber positioned in the vessel interior area, the classifier chamber having a plurality of openings extending through a side wall of the classifier chamber and into a classifier interior area of the classifier chamber, the plurality of openings being configured for passing particles entrained in a gas from the vessel interior area into the classifier interior area;
• and
• at least one flow restrictor arranged with the classifier chamber;
• the at least one flow restrictor is configured to establish a flow velocity of the particles entrained in the gas, through the static classifier;
• wherein each of the plurality of openings has an axial extent and wherein the classifier chamber comprises a classifier outlet connected to an outlet duct;
• and wherein the at least one flow restrictor comprises a sleeve moveably positioned in the outlet duct and a distal end of the sleeve extending into the classifier interior area and partially eclipses the axial extent;
• an actuator system in communication with the sleeve, wherein the actuator system is configured to axially position the sleeve relative to the plurality of openings;
• wherein the actuator system comprises a first actuator positioned on a first side of the duct and a second actuator positioned on a second side of the duct;
• wherein the first actuator and the second actuator are synchronously coupled to axially move the sleeve;
• and
• wherein the first actuator comprises a first screw jack and the second actuator comprises a second screw jack and wherein the synchronously coupling comprises:
• (i) a driver gear box coupled to the first screw jack via a first linkage;
• (ii) a driven gear box coupled to the second screw jack via a second linkage;
• and
• (iii) a third linkage coupling the driver gear box to the driven gear box.

A static classifier comprising:

• a vessel having an inlet and an outlet and having a vessel interior area;
• a classifier chamber positioned in the vessel interior area, the classifier chamber having a plurality of openings extending through a side wall of the classifier chamber and into a classifier interior area of the classifier chamber, the plurality of openings being configured for passing particles entrained in a gas from the vessel interior area into the classifier interior area;
• and
• a first flow restrictor and a second flow restrictor each being arranged with the classifier chamber;
• the first flow restrictor and the second flow restrictor each being configured to establish a flow velocity of the particles entrained in the gas, through the static classifier;
• wherein the second flow restrictor comprises a vane pivotally arranged to the side wall of the classifier chamber proximate each of the plurality of openings;
• and
• the first flow restrictor comprises at least one cover removably secured over at least one of the plurality of openings;
• wherein each of the plurality of openings has an axial extent and wherein the classifier chamber comprises a classifier outlet connected to an outlet duct;
• and further comprising a third flow restrictor comprising a sleeve moveably positioned in the outlet duct and a distal end of the sleeve extending into the classifier interior area and partially eclipses the axial extent;
• an actuator system in communication with the sleeve, wherein the actuator system is configured to axially position the sleeve relative to the plurality of openings;
• wherein the actuator system comprises a first actuator positioned on a first side of the duct and a second actuator positioned on a second side of the duct,
• wherein the first actuator and the second actuator are synchronously coupled to axially move the sleeve;
• and
• wherein the first actuator comprises a first screw jack and the second actuator comprises a second screw jack and wherein the synchronously coupling comprises:
• (i) a driver gear box coupled to the first screw jack via a first linkage;
• (ii) a driven gear box coupled to the second screw jack via a second linkage;
• and
• (iii) a third linkage coupling the driver gear box to the driven gear box.

A static classifier comprising:

• a vessel having an inlet and a vessel outlet and having a vessel interior area, the vessel having a top-plate positioned on the vessel outlet and having a classifier outlet formed in the top-plate, and an outlet duct positioned on the classifier outlet and at least an outer-duct portion of the outlet duct extending outwardly from the top-plate;
• a classifier chamber positioned in the vessel interior area, the classifier chamber having a plurality of openings extending through a side wall of the classifier chamber and into a classifier interior area of the classifier chamber, the plurality of openings being configured for passing particles entrained in a gas from the vessel interior area into the classifier interior area;
• and
• at least one flow restrictor arranged with the classifier chamber;
• the at least one flow restrictor is configured to establish a flow velocity of the particles entrained in the gas, through the static classifier;
• wherein each of the plurality of openings has an axial extent and wherein the at least one flow restrictor comprises a sleeve moveably positioned in the outer-duct portion of the outlet duct and a distal end of the sleeve being movably extendable into the classifier interior area and partially eclipses the axial extent;
• an actuator system in communication with the sleeve, wherein the actuator system is configured to axially position the sleeve relative to the plurality of openings;
• the actuator system comprises a first actuator positioned on a first outer circumferential side of the outer-duct portion of the outlet duct and a second actuator positioned on a second outer circumferential side of the outer-duct portion of the outlet duct,
• wherein the first actuator and the second actuator are synchronously coupled to axially move the sleeve;
• and
• wherein the first actuator comprises a first screw jack and the second actuator comprises a second screw jack and wherein the synchronously coupling comprises:
• (i) a driver gear box coupled to the first screw jack via a first linkage;
• (ii) a driven gear box coupled to the second screw jack via a second linkage;
• and
• (iii) a third linkage coupling the driver gear box to the driven gear box.