Apparatus for removing liquid from the thickeners, filters, and washers

Apparatus for removing filtrate from a thickener, a filter or a washer without use of a large filtrate tank by means of negative pressure, the thickener, filters or washer having a bottom located on a level, the apparatus comprising:

• a filtrate removal means for removing one of a liquid and gas/liquid mixture;
• a filtrate duct having an infeed end and a discharge end, said filtrate duct being sealingly connected at said infeed end to said filtrate removal means to remove one of said liquid and gas/liquid mixture from said filtrate removal means;
• a filtrate pump located on the same level for providing negative pressure for removing the filtrate having a housing and gas separating means a suction side being upstream of said pump and a pressure side being downstream of said pump, said filtrate pump being sealingly connected at said suction side to said discharge end of said filtrate duct to form an enclosed passage, wherein said pressure side of said filtrate pump is provided with a throttle valve;
• and
• a regulating circuit that controls said throttle valve in response to the pressure and temperature on said suction side of said filtrate pump.

Apparatus for removing filtrate from a thickener, a filter or a washer without use of a large filtrate tank by means of negative pressure, the thickener, filters or washer having a bottom located on a level, the apparatus comprising:

• a filtrate removal means for removing one of a liquid and gas/liquid mixture;
• a filtrate duct having an infeed end and a discharge end, said filtrate duct being sealingly connected at said infeed end to said filtrate removal means to remove one of said liquid and gas/liquid mixture from said filtrate removal means;
• a filtrate pump located on the same level for providing negative pressure for removing the filtrate having a housing, a suction side being upstream of said pump and a pressure side being downstream of said pump, said filtrate pump being sealingly connected at said suction side to said discharge end of said filtrate duct to form an enclosed passage;
• a vacuum pump having a suction side;
• and
• a gas removal conduit having an upstream end and a downstream end, said upstream end of said gas removal conduit being connected to said filtrate duct at a point upstream of said filtrate pump, said downstream end of said gas removal conduit being connected to said suction side of said vacuum pump.

Apparatus for removing filtrate from a thickener, a filter or a washer without use of a large filtrate tank by means of negative pressure, the thickener, filters or washer having a bottom located on a level, the apparatus comprising:

• a filtrate removal means for removing one of a liquid and gas/liquid mixture;
• a filtrate duct having an infeed end and a discharge end, said filtrate duct being sealingly connected at said infeed end to said filtrate removal means to remove one of said liquid and gas/liquid mixture from said filtrate removal means;
• a filtrate pump located on the same level for providing negative pressure for removing the filtrate having a housing, a suction side being upstream of said pump and a pressure side being downstream of said pump, said filtrate pump being sealingly connected at said suction side to said discharge end of said filtrate duct to form an enclosed passage wherein said filtrate pump is provided with a gas separating means located within a housing of the filtrate pump or downstream thereof for separating gas from the filtrate;
• a vacuum pump having a suction side;
• and
• a gas removal conduit having an upstream end and a downstream end, said upstream end of said gas removal conduit being connected to said filtrate duct at a point upstream of said filtrate pump, said downstream end of said gas removal conduit being connected to said suction side of said vacuum pump.

Apparatus for removing filtrate from a thickener, a filter or a washer without use of a large filtrate tank by means of negative pressure, the thickener, filters or washer having a bottom located on a level, the apparatus comprising:

• a filtrate removal means for removing one of a liquid and gas/liquid mixture;
• a filtrate duct having an infeed end and a discharge end, said filtrate duct being sealingly connected at said infeed end to said filtrate removal means to remove one of said liquid and gas/liquid mixture from said filtrate removal means;
• a filtrate pump located on the same level for providing negative pressure for removing the filtrate having a housing, a suction side being upstream of said pump and a pressure side being downstream of said pump, said filtrate pump being sealingly connected at said suction side to said discharge end of said filtrate duct to form an enclosed passage, wherein said filtrate pump is a centrifugal pump,
• a vacuum pump having a suction side;
• and
• a gas removal conduit having an upstream end and a downstream end, said upstream end of said gas removal conduit being connected to said filtrate duct at a point upstream of said filtrate pump, said downstream end of said gas removal conduit being connected to said suction side of said vacuum pump.

Apparatus for removing filtrate from a thickener, a filter or a washer without use of a large filtrate tank by means of negative pressure, the thickener, filters or washer having a bottom located on a level, the apparatus comprising:

• a filtrate removal means for removing one of a liquid and gas/liquid mixture;
• a filtrate duct having an infeed end and a discharge end, said filtrate duct being sealingly connected at said infeed end to said filtrate removal means to remove one of said liquid and gas/liquid mixture from said filtrate removal means;
• and
• a filtrate pump located on the same level for providing negative pressure for removing the filtrate having a housing, a suction side being upstream of said pump and a pressure side being downstream of said pump, said filtrate pump being sealingly connected at said suction side to said discharge end of said filtrate duct to form an enclosed passage;
• a vacuum pump having a suction side, wherein said suction side of said vacuum pump is connected to said housing of said filtrate pump to draw gas from said filtrate pump;
• and
• a gas removal conduit having an upstream end and a downstream end, said upstream end of said gas removal conduit being connected to said filtrate duct at a point upstream of said filtrate pump, said downstream end of said gas removal conduit being connected to said suction side of said vacuum pump.

Apparatus for removing filtrate from a thickener, a filter or a washer without use of a large filtrate tank by means of negative pressure, the thickener, filters or washer having a bottom located on a level, the apparatus comprising:

• a filtrate removal means for removing one of a liquid and gas/liquid mixture;
• a filtrate duct having an infeed end and a discharge end, said filtrate duct being sealingly connected at said infeed end to said filtrate removal means to remove one of said liquid and gas/liquid mixture from said filtrate removal means;
• and
• a filtrate pump located on the same level for providing negative pressure for removing the filtrate having a housing, a suction side being upstream of said pump and a pressure side being downstream of said pump, said filtrate pump being sealingly connected at said suction side to said discharge end of said filtrate duct to form an enclosed passage, wherein said filtrate pump is provided with a gas separating means located within said housing of said filtrate pump or downstream thereof for separating gas from the filtrate;
• and
• a vacuum pump having a suction side, wherein said suction side of said vacuum pump is connected to said housing of said filtrate pump to draw gas from said filtrate pump.

Apparatus for removing filtrate from a thickener, a filter or a washer without use of a large filtrate tank by means of negative pressure, the thickener, filters or washer having a bottom located on a level, the apparatus comprising:

• a filtrate removal means for removing one of a liquid and gas/liquid mixture;
• a filtrate duct having an infeed end and a discharge end, said filtrate duct being sealingly connected at said infeed end to said filtrate removal means to remove one of said liquid and gas/liquid mixture from said filtrate removal means;
• a filtrate pump located on the same level for providing negative pressure for removing the filtrate having a housing, a suction side being upstream of said pump and a pressure side being downstream of said pump, said filtrate pump being sealingly connected at said suction side to said discharge end of said filtrate duct to form an enclosed passage, wherein said filtrate pump is a centrifugal pump;
• and
• a vacuum pump having a suction side, wherein said suction side of said vacuum pump is connected to said housing of said filtrate pump to draw gas from said filtrate pump.