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US 6,910,871 B1Granted
Valve guide and spring retainer assemblies
OwnerGeorge H. Blumeinventor
Life of this patent
Estimating the term…
Abstract
Valve guide and spring retainer assemblies are described for use in plunger pump housings that incorporate structural features for stress-relief. These pump housing structural features accommodate correspondingly-shaped valve guides and/or spring retainers that are internally fixed in place using one or more non-threaded spacers. Plunger pumps so constructed are relatively resistant to fatigue failure because of stress reductions, and they may incorporate a variety of valve styles, including top and lower stem-guided valves and crow-foot-guided valves, in easily-maintained configurations. Besides securing valve guides and/or spring retainers, non-threaded spacers may be shaped and dimensioned to aid in further reducing stress and to improve volumetric efficiency of the pumps in which they are used.
Claims27
A plunger pump housing for use with a valve stem guide and spring retainer assembly, the plunger pump housing comprising:
- a suction valve bore having a portion with substantially circular cross-sections for accommodating a circular suction valve, a cylindrical transition area, a shoulder corresponding to a suction valve top stem guide and spring retainer shoulder mating surface, and a first centerline;
- a discharge valve bore having a portion with substantially circular cross-sections for accommodating a circular discharge valve, a cylindrical transition area, a shoulder corresponding to a discharge valve lower stem guide shoulder mating surface, and a second centerline, said first and second centerlines being colinear;
- a cylinder bore having a proximal packing area and a distal transition area, said packing area having a substantially circular cross-section and a third centerline, said third centerline being coplanar with said first and second centerlines;
- and
- an access bore having a cylindrical transition area with elongated cross-sections for facilitating access to interior portions of the plunger pump housing, and a fourth center line, said fourth centerline being colinear with said third center line;
- wherein said suction valve bore transition area has an elongated cross-section substantially perpendicular to said first centerline and with a long axis substantially perpendicular to a plane containing said first, second, third and fourth centerlines;
- wherein said discharge valve bore transition area has an elongated cross-section substantially perpendicular to said second centerline and with a long axis substantially perpendicular to a plane containing said first, second, third and fourth centerlines;
- wherein said cylinder bore transition area has elongated cross-sections substantially perpendicular to said third centerline and with a long axis substantially perpendicular to a plane containing said first, second, third and fourth centerlines;
- wherein said access bore transition area has elongated cross-sections substantially perpendicular to said fourth centerline, each said elongated access bore cross-section having a long axis substantially perpendicular to a plane containing said first, second, third and fourth centerlines;
- and
- wherein each said bore transition area has at least one adjacent chamfer for smoothing bore interfaces.
8 more elements
A plunger pump housing for use with a valve stem guide and spring retainer assembly, the plunger pump housing comprising:
- a suction valve bore having a portion with substantially circular cross-sections for accommodating a circular suction valve, a cylindrical transition area, a shoulder corresponding to a suction valve spring retainer shoulder mating surface, and a first centerline;
- a discharge valve bore having a portion with substantially circular cross-sections for accommodating a circular discharge valve, a cylindrical transition area, a shoulder corresponding to a discharge valve lower stem guide shoulder mating surface, and a second centerline, said first and second centerlines being colinear;
- a cylinder bore having a proximal packing area and a distal transition area, said packing area having a substantially circular cross-section and a third centerline, said third centerline being coplanar with said first and second centerlines;
- and
- an access bore having a cylindrical transition area with elongated cross-sections for facilitating access to interior portions of the plunger pump housing, and a fourth center line, said fourth centerline being colinear with said third center line;
- wherein said suction valve bore transition area has an elongated cross-section substantially perpendicular to said first centerline and with a long axis substantially perpendicular to a plane containing said first, second, third and fourth centerlines;
- wherein said discharge valve bore transition area has an elongated cross-section substantially perpendicular to said second centerline and with a long axis substantially perpendicular to a plane containing said first, second, third and fourth centerlines;
- wherein said cylinder bore transition area has elongated cross-sections substantially perpendicular to said third centerline and with a long axis substantially perpendicular to a plane containing said first, second, third and fourth centerlines;
- wherein said access bore transition area has elongated cross-sections substantially perpendicular to said fourth centerline, each said elongated access bore cross-section having a long axis substantially perpendicular to a plane containing said first, second, third and fourth centerlines;
- and
- wherein each said bore transition area has at least one adjacent chamfer for smoothing bore interfaces.
8 more elements
A plunger pump housing for use with a valve stem guide and spring retainer assembly, the plunger pump housing comprising:
- a suction valve bore having a portion with substantially circular cross-sections for accommodating a circular suction valve, a transition area, and a first centerline;
- a discharge valve bore having a portion with substantially circular cross-sections for accommodating a circular discharge valve, a cylindrical transition area, a shoulder corresponding to a discharge valve lower stem guide mating surface, and a second centerline, said first and second centerlines being colinear;
- a cylinder bore having a proximal packing area and a distal transition area, said packing area having a substantially circular cross-section and a third centerline, said third centerline being coplanar with said first and second centerlines;
- and
- an access bore having a cylindrical transition area with elongated cross-sections for facilitating access to interior portions of the plunger pump housing, and a fourth center line, said fourth centerline being colinear with said third center line;
- wherein said suction valve bore transition area has an elongated cross-section substantially perpendicular to said first centerline and with a long axis substantially perpendicular to a plane containing said first, second, third and fourth centerlines;
- wherein said discharge valve bore transition area has an elongated cross-section substantially perpendicular to said second centerline and with a long axis substantially perpendicular to a plane containing said first, second, third and fourth centerlines;
- wherein said cylinder bore transition area has elongated cross-sections substantially perpendicular to said third centerline and with a long axis substantially perpendicular to a plane containing said first, second, third and fourth centerlines;
- wherein said access bore transition area has elongated cross-sections substantially perpendicular to said fourth centerline, each said elongated access bore cross-section having a long axis substantially perpendicular to a plane containing said first, second, third and fourth centerlines;
- and
- wherein each said bore transition area has at least one adjacent chamfer for smoothing bore interfaces.
8 more elements
A plunger pump housing for use with a valve stem guide and spring retainer assembly, the plunger pump housing comprising:
- a suction valve bore having a portion with substantially circular cross-sections for accommodating a circular suction valve, a cylindrical transition area, a shoulder corresponding to a suction valve top stem guide and spring retainer shoulder mating surface, and a first centerline;
- a discharge valve bore having a portion with substantially circular cross-sections for accommodating a circular discharge valve, a cylindrical transition area, a shoulder corresponding to a discharge valve lower stem guide shoulder mating surface and a second centerline, said first and second centerlines being colinear;
- a cylinder bore having a proximal packing area and a distal transition area, said packing area having a substantially circular cross-section and a third centerline, said third centerline being coplanar with said first and second centerlines;
- and
- an access bore having a cylindrical transition area with elongated cross-sections for facilitating access to interior portions of the plunger pump housing, and a fourth center line, said fourth centerline being colinear with said third center line;
- wherein said cylinder bore transition area has elongated cross-sections substantially perpendicular to said third centerline and with a long axis substantially perpendicular to a plane containing said first, second, third and fourth centerlines;
- wherein said access bore transition area has elongated cross-sections substantially perpendicular to said fourth centerline, each said elongated access bore cross-sections having a long axis substantially perpendicular to a plane containing said first, second, third and fourth centerlines;
- and
- wherein each said bore transition area has at least one adjacent chamfer for smoothing bore interfaces.
6 more elements
Dependencies are inferred from the claim text.