SLURRY PISTON PUMP WITH CYLINDER CLEANING APPARATUS
First Claim
Patent Images
1. A water box-free dual piston pump for a slurry material comprising:
- first and second reciprocating drive rods each having an end;
first and second pistons supported at the respective ends of the first and second drive rods;
first and second piston cylinders each having a sidewall defining an interior extending between a back end and a front end, the first and second pistons being mounted respectively in the interior of the first and second piston cylinders so as to be movable between the back and front ends of the respective piston cylinders whereby to pump slurry material into and out of the front ends of the piston cylinders in response to reciprocation of the respective drive rods; and
a fluid hose fluidically coupling the back end of the first piston cylinder to the back end of the second piston cylinder whereby to expose fluid in the fluid hose to the interiors of the piston cylinders at the back ends thereof.
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Accused Products
Abstract
A slurry piston pump (10) including a fluid hose (70) coupled into the back end (26) of a piston cylinder (24) to provide cleaning and/or lubricating fluid (60) into the interior (23) of cylinder (24) while allowing cylinder (24) to be directly coupled to a drive cylinder (12).
2 Citations
33 Claims
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1. A water box-free dual piston pump for a slurry material comprising:
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first and second reciprocating drive rods each having an end;
first and second pistons supported at the respective ends of the first and second drive rods;
first and second piston cylinders each having a sidewall defining an interior extending between a back end and a front end, the first and second pistons being mounted respectively in the interior of the first and second piston cylinders so as to be movable between the back and front ends of the respective piston cylinders whereby to pump slurry material into and out of the front ends of the piston cylinders in response to reciprocation of the respective drive rods; and
a fluid hose fluidically coupling the back end of the first piston cylinder to the back end of the second piston cylinder whereby to expose fluid in the fluid hose to the interiors of the piston cylinders at the back ends thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18)
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12. A water box-free piston pump for a slurry material comprising:
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a reciprocating drive rod having an end;
a piston supported at an end of the drive rod;
a piston cylinder having a sidewall defining an interior extending between a back end and a front end, the piston being mounted in the interior of the piston cylinder so as to be movable between the back and front ends thereof whereby to pump slurry material into and out of the front end of the piston cylinder in response to reciprocation of the drive rod; and
a fluid hose having a cylinder end and a distal end, the cylinder end of the fluid hose being fluidically coupled into the back end of the piston cylinder whereby to expose fluid in the fluid hose to the drive rod and the interior of the piston cylinder at the back end thereof.
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19. A water box-free dual piston pump for a slurry material comprising:
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first and second reciprocating drive rods each having an end;
first and second pistons supported at the respective ends of the first and second drive rods;
first and second piston cylinders each having a sidewall defining an interior extending between a back end and a front end, the first and second pistons being mounted respectively in the interior of the first and second piston cylinders so as to be movable between the back and front ends of the respective piston cylinders whereby to pump slurry material into and out of the front ends of the piston cylinders in response to reciprocation of the respective drive rods; and
a first and second fluid hose each having a cylindrical end and a distal end, the cylinder ends being fluidically coupled into the respective back ends of the first and second piston cylinders whereby to expose fluid in the first and second fluid hoses, respectively, to the interiors of the first and second piston cylinders at the back ends thereof.
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20. A method of cleaning or lubricating a slurry material dual piston pump wherein drive rods extend into an interior of respective piston cylinders through respective back ends thereof and are coupled to pistons of the respective piston cylinders, the respective pistons being movable between the back end and a front end of the cylinders by reciprocation of the respective drive rods to pump slurry material into and out of the front ends of the pump cylinders, the method comprising:
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fluidically coupling a fluid hose between the back ends of the first and second piston cylinders;
providing a fluid in the fluid hose; and
reciprocating the drive rods to move the pistons while exposing the fluid in the hose to the interiors of the piston cylinders. - View Dependent Claims (21, 22, 23, 24, 25, 27, 28, 29, 30, 31)
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26. A method of cleaning or lubricating a slurry material piston pump wherein a drive rod extends into an interior of a piston cylinder through a back end thereof and is coupled to a piston of the piston cylinder, the piston being movable between the back end and a front end of the piston cylinder by reciprocation of the drive rod to pump slurry material into and out of the front end of the piston cylinder, the method comprising:
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providing a fluid hose having a cylinder end and a distal end;
fluidically coupling the cylinder end of the fluid hose into the back end of the piston cylinder;
providing a fluid in the fluid hose; and
reciprocating the drive rod to move the piston while exposing the fluid in the hose to the interior of the piston cylinder.
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32. A method of exposing drive rods of a slurry material dual piston pump to a fluid without a water box, wherein the drive rods extend into an interior of respective hydraulic pump cylinders through respective back ends thereof and are coupled to pump pistons of the respective hydraulic pump cylinders, the respective pump pistons being movable between the back end and a front end of the pump cylinders by reciprocation of the respective drive rods to pump slurry material into and out of the front ends of the pump cylinders, the method comprising:
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providing respective fluid hoses each having a cylinder end and a distal end;
fluidically coupling the cylinder end of the respective hoses into the back end of the respective piston cylinders;
providing a fluid in the respective fluid hose; and
reciprocating the drive rods to move the pistons while exposing the fluid in the respective fluid hoses to the interiors of the respective piston cylinders. - View Dependent Claims (33)
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Specification