Valve, clamp, refractory and method

A bandless refractory set for use in a sliding gate valve having a yieldable means for urging two refractory plates having teeming openings in pressure face to face relationship, one plate being a sliding gate and one a stationary plate comprising, in combination,

• each said plate having curvilinear edge portions,
• each said plate having opposite faces, one face being a sliding face and one face being a mounting face,
• each said edge portions having a tapered portion thereon,
• each said tapered portions being formed to be engaged by a complimentary curvilinear clamping ring,
• said plate width and length enlarging progressively from the sliding face towards the mounting face along substantially the entire extent of the edge portions.

A bandless refractory stationary plate for use in a sliding gate valve having a sliding gate in pressure face-to-face relationship with the stationary plate on the sliding face thereof and further having a well nozzle in open communication with the stationary plate, comprising, in combination,

• a plate having curvilinear edge portions,
• said plate having opposite faces, one face being a sliding face and one face being a mounting face,
• said edge portions having a tapered portion thereon tapering outwardly from the sliding face of the refractory,
• said tapered portions being formed to be engaged by a curvilinear clamping ring,
• said plate width and length enlarging progressively from the sliding face towards the mounting face along substantially the entire extent of the edge portions.

A sliding gate plate for use in a sliding gate valve having a pressure plate comprising, in combination,

• said plate having curvilinear edge portions,
• said plate having opposite faces, one face being a sliding face and one face being a mounting face,
• said edge portions having a tapered portion thereon,
• said plate width and length enlarging progressively from the sliding face towards the mounting face along substantially the entie extent of the edge portions,
• said tapered portion being formed to be engaged by a clamping ring,
• a special service insert imbedded in a monolithic material, and
• said insert being thinner than the monolith.

A stationary plate for use in a sliding gate valve having a sliding gate in pressure face-to-face relationship with the stationary plate and further having a well nozzle in open communication with the stationary plate, comprising, in combination,

• a plate having curvilinear edge portions,
• said plate having opposite faces, one face being a sliding face and one face being a mounting face,
• said edge portions having a tapered portion thereon,
• said plate width and length enlarging progressively from the sliding face towards the mounting face along substantially the entire extent of the edge portions,
• said tapered portion being formed to be engaged by a clamping ring,
• a centrally disposed special service refractory imbedded in a monolithic material,
• said centrally disposed refractory insert being thinner than the surrounding monolith but with its sliding plate interface surface flush with the monolith, whereby a recess is provided on the surface opposite the sliding interface to receive a nozzle.

A stationary plate for use in a sliding gate valve having a sliding gage in pressure face-to-face relationship with the stationary plate and further having a well nozzle in open communication with the stationary plate, comprising, in combination,

• a plate having curvilinear edge portions,
• said plate having opposite faces, one face being a sliding face and one face being a mounting face,
• said edge portions having a tapered portion thereon,
• said plate width and length enlarging progressively from the sliding face towards the mounting face along substantially the entire extent of the edge portions,
• said tapered portions being formed to be engaged by a clamping ring,
• a centrally disposed special service refractory imbedded in a monolithic material,
• said centrally disposed refractory insert being thicker than the surrounding monolith but with its sliding plate interface flush with the monolith,
• whereby a projection is provided on the surface opposite the sliding interface to engage a nozzle.

A bandless refractory sliding gate plate for use in a sliding gate valve having a stationary plate in pressure face-to-face relationship with the sliding gate plate on the sliding face thereof and further having a well nozzle in open communication with the stationary plate, comprising, in combination,

• a sliding plate having curvilinear edge portions,
• said plate having opposite faces, one face being a sliding face and one face being a mounting face,
• said edge portions having a tapered portion thereon tapering outwardly from the sliding face of the refractory,
• said plate width and length enlarging progressively from the sliding face towards the mounting face along substantially the entire extent of the edge portions,
• said tapered portions being formed to be engaged by a curvilinear clamping ring.

A sliding gate valve for use with a bandless refractory, said valve having a stationary plate and a sliding gate, a carrier for moving the sliding gate, a frame for receiving the carrier, means for driving the carrier, and yieldable means for urging the sliding plate in pressure face-to-face relationship with the stationary plate, said stationary plate and sliding gate each having opposite faces, one face being a sliding face and one face being a mounting face, said plate having a width and length enlarging progressively from the sliding face towards the mounting face along substantially the entire extent of the edge portions, characterized by

• a curvilinear refractory clamp ring proportioned to encircle the sliding plate,
• a curvilinear clamping ring proportioned to engage the stationary plate,
• each said clamping ring having a tapered face proportioned to matingly engage the tapered edge portions of the respective refractories,
• and means for securing said rings to the structure of the valve to thereby create a central compressive force component, and a clamping component in the direction of the member to which each refractory member is secured.

A sliding gate valve comprising, in combination,

• an upper stationary plate and a lower stationary plate,
• a central shiftable plate having an aperture therein,
• each of said stationary plates having an aperture therein and coaxial with each other,
• power means for moving the central reciprocating plate,
• means for holding all three plates in pressure face-to-face relationship,
• each stationary plate being characterized by opposite faces, one face being a sliding face and one face being a mounting face,
• said edge portions having a tapered portion thereon tapering outwardly from the sliding face of the refractory,
• said taper portions being formed to be engaged by a curvilinear clamping ring,
• said plate width and length enlarging progressively from the sliding face towards the mounting face along substantially the entire extent of the edge portions.