Wearing ring for volute pump

• US 5,915,921 A
• Filed: 09/26/1997
• Issued: 06/29/1999
• Est. Priority Date: 09/26/1997
• Status: Expired due to Term

• Current Assignee: Goulds Pumps Incorporated (ITT, Inc.)
• Original Assignee: Goulds Pumps Incorporated (ITT, Inc.)
• Inventors: Sabini, Eugene P.
• Primary Examiner(s): Denion, Thomas E.
• Assistant Examiner(s): WOO, RICHARD SUKYOON
• Application Number:
  US08/939,434
• Time in Patent Office: 641 Days
• Field of Search: 415/170.1, 415/172.1, 415/173.1, 415/173.4, 415/173.6, 415/174.4, 415/211.1, 415/208.1, 277/407, 277/609, 277/630
• US Class Current: 415/173.1
• CPC Class Codes: F04D 29/167 of a centrifugal flow wheel
• CPC Class Codes: F04D 29/4273 suction eyes
• CPC Class Codes: F04D 29/445 especially adapted for liquid pumps

Abstract

A volute pump having a suction volute, a discharge volute and an impeller. The volute pump further comprises a wearing ring seated between the interior walls of the suction volute and the impeller. The wearing ring has an accurate extended portion which extends into the passage of the suction volute to prevent flow separation caused by dead zones in the suction passage.

Claims

1. A pump for pumping fluid having a suction volute, a discharge volute and an impeller, the impeller being interposed between the suction volute and the discharge volute so that the impeller suctions the fluid flow through the suction volute and forces the flow of fluid out of the discharge volute of the pump, both the suction volute and discharge volute having walls which form a suction passage and a discharge passage respectively, the walls of the suction volute being partially contoured to correspond with the walls of the discharge volute such that the walls of the suction volute create a valley in the suction passage, comprising:

(a) a wearing ring positioned between the walls of the suction volute and the impeller of the pump, said wearing ring having an extended portion extending outward into the suction volute and over the valley formed in the walls of the suction passage.

2. A pump as recited in claim 1, wherein said extended portion of said wearing ring has a length and width sufficient to extend over the valley formed in the walls of the suction passage and prevent the separation of flow over the valley in the suction passage.

3. A pump for pumping fluid having a suction volute, a discharge volute, and an impeller, the suction volute and discharge volute each being formed by a curved casing, the casing having interior and exterior walls, the impeller being positioned in the discharge volute of the pump to suction the flow of fluid through the suction volute of the pump and force the flow of fluid out of the discharge volute of the pump, the pump further comprising:

(a) a wearing ring, said wearing ring positioned between the interior walls of the casing and the impeller,

(b) said wearing ring having an extended portion which extends into the suction volute of the chamber to eliminate fluid flow separation within the suction volute.