Sealing arrangement, pump and method

A liquid pump in combination with a sealing arrangement which comprises:

• a first annular seal including porous material,
• which seal is arrangeable around a shaft of said pump in such a way that,
• a sealing surface including porous material thereof is in a first plane,
• which first plane is at least substantially perpendicular relative to a pump shaft rotation axis;
• gas passage for conveying gas to said seal;
• a support frame for the first seal onto which said first annular seal is mounted;
• an opposing surface for the first seal, arranged against the sealing surface of the first seal;
• wherein:
• least one of the support frame for the first seal and the opposing surface for the first seal is arranged to be floating in such a way that it is able to move relative to a body of the pump, whereby the sealing arrangement is capable of compensating for position errors of said pump shaft or body;
• and
• at least one bearing arranged to a distance from the seals and configured to support a shaft of the pump onto a body of the pump.

A method for sealing a liquid pump, the method comprising:

• providing a liquid pump comprising mechanical liquid-lubricated end face seals;
• removing said end face seals from said liquid pump;
• and
• installing a sealing arrangement in place of said end face seals, wherein the sealing arrangement includes:
• a first annular seal including porous material;
• which seal is arrangeable around a shaft of said pump in such a way that;
• a sealing surface including porous material thereof is in a first plane,
• which first plane is at least substantially perpendicular relative to a pump shaft rotation axis, and wherein the sealing arrangement includes:
• a gas passage for conveying gas to said seal;
• a support frame for the first seal onto which said first annular seal is mounted;
• and
• an opposing surface for the first seal, arranged against the sealing surface of the first seal;
• wherein:
• at least one of the support frame for the first seal and the opposing surface for the first seal is arranged to be floating in such a way that it is able to move relative to a body of the pump, whereby the sealing arrangement is capable of compensating for position errors of the pump shaft or body.