US2013294954A1PendingUtilityA1

Advanced ceramic tubular type oil pump

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Assignee: YANG YONGLIPriority: May 6, 2012Filed: May 6, 2012Published: Nov 7, 2013
Est. expiryMay 6, 2032(~5.8 yrs left)· nominal 20-yr term from priority
Inventors:Yongli Yang
F05C 2203/0804F04B 53/14
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Claims

Abstract

An advanced ceramic tubular type oil pump includes a pump barrel, a plunger, an inflow valve, an outflow valve, wherein a ceramic layer that can resist heat, attrition and corrosion is lined onto an inner wall of a steel based pipe of the pump barrel; a plurality of slots are spacedly apart pre-provided on an outer surface of a rod body of the plunger, an alloy coating for resisting attrition and corrosion is sprayed to an outer surface of the rod body of the plunger, and a plurality of zirconia toughened alumina (ZTA) ceramic rings are inlaid onto the alloy coating in the slots.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . An advanced ceramic tubular type oil pump, comprising: a pump barrel, a plunger, an inflow valve, an outflow valve, wherein a ceramic layer that can resist heat, attrition and corrosion is lined onto an inner wall of a steel based pipe of the pump barrel; a plurality of slots are spacedly apart pre-provided on an outer surface of a rod body of the plunger, an alloy coating for resisting attrition and corrosion is sprayed to an outer surface of the rod body of the plunger, and a plurality of zirconia toughened alumina (ZTA) ceramic rings are inlaid onto the alloy coating in the slots. 
     
     
         2 . The advanced ceramic tubular type oil pump, as recited in  claim 1 , wherein an outflow port of a standing valve cover adopts a streamline and three-groove structure. 
     
     
         3 . The advanced ceramic tubular type oil pump, as recited in  claim 1 , wherein a traveling value cover adopts open three-groove structure. 
     
     
         4 . The advanced ceramic tubular type oil pump, as recited in  claim 1 , wherein the ceramic ring is composed of three arc ceramic slices of same specification. 
     
     
         5 . The advanced ceramic tubular type oil pump, as recited in  claim 1 , wherein the alloy coating of the outer surface of the rod body of the plunger is nickel-base alloy coating material, and a thickness of the alloy coating is less than 0.254 mm.

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