Method and apparatus for removing outer coatings from pipe

Apparatus for removing a coating material from the outer surface of a pipe comprising:

• an enclosed housing extending about the pipe including a pair of spaced transversely extending end plates having aligned openings to receive the pipe, amd a peripheral wall secured between said end plates and extending about said pipe, said peripheral wall having a lower discharge opening therein;
• coating removal means mounted within said enclosed housing including cutting members for contacting and cutting the coating material on the outer surface of the pipe, and cleaning members for wiping the remaining coating material from the pipe after being cut;
• means to move said coating removal means relative to said pipe and said enclosed housing during removal of said coating;
• a removable container connected to said lower discharge opening in said housing to receive the coating particles removed from the outer surface of the pipe;
• and
• closure means for said lower discharge opening movable between open and closed positions relative to said discharge opening.

Apparatus at a fixed installation for removing a coating material from the outer surface of a pipe and comprising:

• an enclosed housing extending about said pipe having a pair of spaced end members with aligned openings to receive the pipe and having a discharge opening therein for removed coated particles, said enclosed housing being substantially sealed from atmosphere about said pipe;
• means to support said enclosed housing in a stationary position at said fixed installation;
• means to move said pipe longitudinally in a generally horizontal direction through said aligned openings in said enclosed housing;
• coating removal means mounted within said enclosed housing for removing the coating material from the outer surface of the pipe;
• and
• collecting means connected to said housing at said discharge opening to collect the waste coated material for disposal at a remove disposal site, said collecting means including pneumatic means in fluid communication with the interior of said enclosed housing for the removal of coating material particles.

A method for removing a coating material from the outer surface of a pipe and collecting the removed coating material for disposal at a remote disposal site;

• said method comprising:
• providing an enclosed housing about the pipe including a pair of spaced end plates with openings to receive the pipe and a peripheral wall secured between the end plates about the pipe with a discharge opening in said peripheral wall;
• providing coating removal means within said enclosed housing for removing the coating material from the pipe;
• providing a container adjacent said housing for coating material removed from the outer surface of said pipe;
• connecting said container to said housing in communication with said discharge opening in said housing to receive coating particles removed from the outer surface of the pipe to collect the particles for disposal at a remote disposal site;
• and
• providing closure means for said discharge opening movable between open and closed positions relative to said discharge opening.

A method for removing a coating material from the outer surface of a pipe and collecting the removed coating material for disposal at a remote disposal site;

• said method comprising:
• providing an enclosed housing about the pipe including a pair of spaced end plates with openings to receive the pipe and a peripheral wall secured between the end plates about the pipe with a lower discharge opening in said peripheral wall;
• providing coating removal means within said enclosed housing for removing the coating material from the pipe;
• providing vacuum means in communication with the interior of said housing for the removal of suspended coating particles;
• and
• removably connecting a disposable bag to said lower discharge opening in said housing to receive coating particles removed from the outer surface of the pipe thereby to collect the particles for disposal at a remote disposal site.

Apparatus for removing a coating material from the outer surface of a pipe comprising:

• a housing extending about the pipe including a pair of spaced transversely extending end plates having aligned openings to receive the pipe, and a peripheral wall secured between said end plates and extending about said pipe, said peripheral wall having a lower discharge opening therein;
• coating removal means mounted within said enclosed housing including cutting members for contacting and cutting the coating material on the outer surface of the pipe, and cleaning members for wiping the remaining coating material from the pipe after being cut;
• means to rotate said coating removal means in a continuous path about said pipe;
• collecting means connected to said housing at said discharge opening for collecting the waste coating material removed from the pipe;
• and
• means to control the flow of waste coating material from said discharge opening to said collecting means.

Apparatus for removing a coating material from the outer surface of a pipe and comprising:

• an enclosed housing extending about said pipe having a pair of spaced end members with aligned openings to receive the pipe and having a discharge opening therein for removed coating particles;
• a closure plate mounted on said housing for movement between open and closed positions relative to said discharge opening;
• coating removal means mounted within said enclosed housing for removing the coating material from the outer surface of the pipe;
• and
• collecting means connected to said housing at said discharge opening to collect the waste coated material for disposal at a remote disposal site, said collecting means comprising a bag detachably mounted beneath said discharge opening to receive waste coated material from said enclosed housing.

A method for removing a coating material from the outer surface of a pipe and collecting the removed coating material for disposal at a remote disposal site;

• said method comprising:
• providing an enclosed housing about the pipe including a pair of spaced end plates with openings to receive the pipe and a peripheral wall secured between the end plates about the pipe with a lower discharge opening in said peripheral wall;
• providing coating removal means within said enclosed housing for removing the coating material from the pipe;
• providing vacuum means in communication with the interior of said housing for the removal of suspended coating particles;
• removably connecting a disposable bag to said lower discharge opening in said housing to receive coating particles removed from the outer surface of the pipe thereby to collect the particles for disposal at a remote disposal site;
• and
• providing a rotatable support beneath said disposable bag for supporting said bag thereon whereby said bag when filled may be easily removed from beneath said discharge opening by rotation of said support.

Apparatus for removing a coated material from the outer surface of a pipe supported above the ground adjacent a ditch receiving the pipe;

• said apparatus comprising:
• a side boom tractor for supporting the pipe above the ground;
• a skid pulled by said side boom tractor adjacent a side of the pipe;
• a carriage adjacent said side boom tractor including a support frame having rollers contacting the outer surface of said pipe supporting the carriage for movement along the pipe to remove the coated material from the outer surface of the pipe;
• said carriage comprising:
• an enclosed housing extending about said pipe and having a discharge opening, said enclosed housing including a pair of side sections mounted on said support frame for pivotal movement between an inoperable open position for removal from said pipe and an operable closed position about said pipe;
• means within the enclosed housing for contacting and removing the coated material from the pipe in small particles including a plurality of coating removal members for cutting and scraping the material from the pipe;
• and
• collecting means connected to said housing at said discharge opening for receiving and collecting the waste coated material removed from the pipe.

Apparatus for removing a coated material from the outer surface of a pipe supported above the ground adjacent a ditch receiving the pipe;

• said apparatus comprising:
• a side boom tractor for supporting the pipe above the ground;
• a skid pulled by said side boom tractor adjacent a side of the pipe;
• a carriage adjacent said side boom tractor including a support frame having rollers contacting the outer surface of said pipe supporting the carriage for movement along the pipe to remove the coated material from the outer surface of the pipe;
• said carriage comprising:
• an enclosed housing extending about said pipe and having a discharge opening, said enclosed housing including a pair of side sections mounted on said support frame for pivotal movement between an inoperable open position for removal from said pipe and an operable closed position about said pipe;
• means for wetting the coated material prior to removal from the pipe;
• means within the enclosed housing for contacting and removing the coated material from the pipe in small particles;
• and
• collecting means connected to said housing at said discharge opening for receiving and collecting the waste coated material removed from the pipe.