Apparatus for applying refractory material onto the inner surface of a furnace

An apparatus for applying a refractory material onto the inner surface of a furnace comprising in combination:

• a mobile transport car;
• a rotatable turntable mounted on said transport car;
• a spray pipe having a spray nozzle at one end thereof for spraying refractory material onto the inner surface of a furnace and adapted to receive the refractory material from a supply of the refractory material adjacent the other end thereof;
• support means positioned on said rotatable turntable rotatably and pivotably supporting said spray pipe;
• storage means mounted on said rotatable turntable for storing at least a supply of refractory material therein, said storage means including a refractory material storage tank and agitating means positioned rotatably therein and adapted to prevent the formation of refractory material bridges within said tank, thereby facilitating the discharge of refractory material out of said tank;
• said refractory material storage tank further including means for measuring the amount of refractory material therein, a resistance structure mounted on said agitating means immersible at least partially in the refractory material and thus rotatable against the flow resistance of refractory material within said tank when said agitating means is rotated, and a measuring device adapted to provide a visual indication of refractory material within said tank in response to a signal generated by said resistance structure;
• and
• means carried by said transport car for supplying the refractory material to said spray pipe from said storage means and for propelling the refractory material through said spray pipe and spray nozzle.

An apparatus for applying a refractory material onto the inner surface of a furnace comprising in combination:

• a mobile transport car;
• a rotatably turntable mounted on said transport car;
• a spray pipe having a spray nozzle at one end thereof for spraying refractory material onto the inner surface of a furnace and adapted to receive the refractory material from a supply of the refractory material adjacent the other end thereof;
• support means positioned on said rotatable turntable rotatably and pivotably supporting said spray pipe;
• storage means mounted on said rotatable turntable for storing at least a supply of refractory material therein;
• means carried by said transport car for supplying the refractory material to said spray pipe from said storage means and for propelling the refractory material through said spray pipe and spray nozzle;
• and
• first, second and third measuring means, the first of said measuring means comprising an arcuate scale plate having the radial center thereof coincident with the vertical axis of said turntable and an index marker on said storage means in alignment with the vertical axis of said turntable;
• said first measuring means being thus adapted to measure the horizontal rotational angle of said turntable, said second measuring means comprising an arcuate scale plate mounted vertically on said storage means and an index marker cooperable therewith for measuring the vertical angle through which said spray pipe has been pivoted, and said third measuring means comprising a linear scale carried by said refractory material supply means for measuring the linear movement of said spray pipe.

An apparatus for applying a refractory material onto the inner surface of a furnace comprising in combination:

• a mobile transport car;
• a rotatable turntable mounted on said transport car;
• a spray pipe having a spray nozzle at one end thereof for spraying refractory material onto the inner surface of a furnace and adapted to receive the refractory material from a supply of the refractory material adjacent the other end thereof, said spray pipe comprising inner and outer pipes;
• support means positioned on said rotatable turntable rotatably and pivotably supporting said spray pipe;
• storage means mounted on said rotatable turntable for storing at least a supply of refractory material therein, said storage means comprising a first tank for the storage of refractory material and a second tank for storage of water;
• said outer pipe including a pipe cooling means which comprises an inlet opening formed in the wall of said outer pipe and a cooling water supply tube connected between said water storage tank and said inlet opening in said outer pipe;
• means carried by said transport car for supplying the refractory material to said spray pipe from said storage means and for propelling the refractory material through said spray pipe and spray nozzle, said refractory material supply means comprising a flexible hose connected between the other end of said spray pipe and said refractory material storage tank, said flexible hose being connected at said other end of said spray pipe to said inner pipe;
• a water outlet formed in said outer pipe and a warm water return tube connected between the water outlet of said outer pipe and the middle of said flexible hose;
• and
• a selected number of water-regulating means each of which includes an orifice plate provided with a plurality of orifices formed therein, said water-regulating means being disposed in parallel relation at an intermediate location in said warm water return tubes, and each of said water-regulating means including a solenoid valve adapted to selectively control the flow of water through the associated orifice plate.

An apparatus for applying a refractory material onto the inner surface of a furnace comprising in combination:

• a mobile transport car;
• a rotatable turntable mounted on said transport car;
• a spray pipe having a spray nozzle at one end thereof for spraying refractory material onto the inner surface of a furnace and adapted to receive the refractory material from a supply of the refractory material adjacent the other end thereof, said spray pipe comprising inner and outer pipes;
• support means positioned on said rotatable turntable rotatable and pivotably supporting said spray pipe;
• storage means mounted on said rotatable turntable for storing at least a supply of refractory material therein, said storage means comprising a first tank for the storage of refractory material and a second tank for the storage of water;
• said outer pipe including a pipe cooling means which comprises an inlet opening formed in the wall of said outer pipe and a cooling water supply tube connected between said water storage tank and said inlet opening in said outer pipe;
• means carried by said transport car for supplying the refractory material to said spray pipe from said storage means and for propelling the refractory material through said spray pipe and spray nozzle, said refractory material supply means comprising a flexible hose connected between the other end of said spray pipe and said refractory material storage tank, said flexible hose being connected at said other end of said spray pipe to said inner pipe;
• a water outlet formed in said outer pipe and a warm water return tube connected between the water outlet of said outer pipe and the middle of said flexible hose;
• the space between said inner and outer pipes serving as a cooling water supply chamber, a cooling water return tube being secured externally to and in parallel relation with said outer pipe, said cooling water return tube being in communication at one end thereof with said cooling water supply chamber and at the other end thereof with said warm water return tube.

An apparatus for applying a refractory material onto the inner surface of a furnace comprising in combination:

• a mobile transport car;
• a rotatable turntable mounted on said transport car;
• a spray pipe having a spray nozzle at one end thereeof for spraying refractory material onto the inner surface of a furnace and adapted to receive the refractory material from a supply of the refractory material adjacent the other end thereof;
• support means positioned on said rotatable turntable rotatably and pivotably supporting said spray pipe, said support means including a vertical support column and a cylindrical member pivotably carried at the top thereof, an elongated bar being slidably positioned within said cylindrical member, first, second and third measuring devices being provided, said first measuring device comprising a circumferentially extending scale on said turntable for measuring the horizontal rotational angle thereof, said second measuring device comprising an arcuate scale carried by said turntable adjacent said cylindrical member for measuring the vertical angle through which said cylindrical member has been pivoted, and said third measuring device comprising a linear scale on said elongated bar for measuring the linear distance said bar is moved longitudinally of said cylindrical member;
• storage means mounted on said rotatable turntable for storing at least a supply of refractory material therein;
• and
• means carried by said transport car for supplying the refractory material to said spray pipe from said storage means and for propelling the refractory material through said spray pipe and spray nozzle.

An apparatus for applying a refractory material onto the inner surface of a furnace comprising in combination:

• a mobile transport car;
• a rotatable turntable mounted on said transport car;
• a spray pipe having a spray nozzle at one end thereof for spraying refractory material onto the inner surface of a furnace and adapted to receive the refractory material from a supply of the refractory material adjacent the other end thereof;
• support means positioned on said rotatable turntable rotatably and pivotably supporting said spray pipe;
• storage means mounted on said rotatable turntable for storing at least a supply of refractory material therein;
• means carried by said transport car for supplying the refractory material to said spray pipe from said storage means and for propelling the refractory material through said spray pipe and spray nozzle;
• and an operator's seat integrally mounted on said rotatable turntable,
• whereby said turntable, said spray pipe, said support means, said storage means and said operator's seat are all simultaneously and integrally rotatable.