| Two stage conical liquid ring pump having removable manifold, shims and first and second stage head o-ring receiving boss -> Monitor Keywords |
|
|
  Two stage conical liquid ring pump having removable manifold, shims and first and second stage head o-ring receiving bossUSPTO Application #: 20080038120Title: Two stage conical liquid ring pump having removable manifold, shims and first and second stage head o-ring receiving boss Abstract: A first head of a liquid ring pump has an inlet, an outlet, a shaft receiving aperture extending there through, and an internal end. The internal end includes a boss with a side wall. The boss is received by a pump body. An interstage manifold is removeably coupled to the pump without being integral with or connected to the pump body. An o-ring can be located between a side wall of the boss and an internal side wall of the body. (end of abstract)
Agent: James B. Conte - Chicago, IL, US Inventors: Louis Lengyel, Ramesh B. Shenoi, Carl G. Dudeck USPTO Applicaton #: 20080038120 - Class: 417 68 (USPTO) The Patent Description & Claims data below is from USPTO Patent Application 20080038120. Brief Patent Description - Full Patent Description - Patent Application Claims
[0001]The present application claims priority from provisional application 60822147 filed Aug. 11, 2006. FIELD [0002]The present disclosure concerns a liquid ring pump and more particularly, a conical two stage liquid ring pump. BACKGROUND [0003]The present disclosure is related to pumps. In particular, the present disclosure relates to two stage liquid ring pumps that are used to create a vacuum. Liquid ring pumps can be used in wet industrial environments and, as they are inherently low in friction, have a long service life. Liquid ring pumps remove air or gases by means of an impeller rotating freely in an eccentric casing. Operating liquid, usually water, is fed into the pump and is thrown by centrifugal force to form a moving ring along the internal casing wall, creating a sealed pumping chamber. Sealing liquid is also fed into the pump to seal interstices between the rotor and other parts. Industrial users employ these highly reliable pumps for a variety of uses, such as forming wet paper pulp into egg cartons and nursery planting containers, soil remediation where contaminated ground water is drawn by vacuum from the earth for treatment, and a host of other applications. Examples of liquid ring pumps can be found in U.S. Pat. No. 4,521,161, Olsen et al. and U.S. Pat. No. 5,899,688, Shenoi. Both of the patents are hereby incorporated in this application by reference. SUMMARY [0004]A two-stage liquid ring pump, in accordance with the present disclosure, includes a two chambered body connected to a first stage head at a first end, and a second stage head at a second end. In the illustrative embodiments, the first and second stage heads each include an internal face, side or end. Each end is adapted to engage an opposite side of the body. At least one end has a surface designed to accept a plurality of gaskets that act as shims to enable one to set the clearance between the rotor and cones within the body. To enable the setting of clearance, shims are used to form an axial spacing between the internal face of the head and an end of the body. The clearances between the cones and the rotor are critical for maximum performance. The first and second stage heads also each include a circular rabbet or boss on their faces. The bosses are adapted to accept an o-ring to allow sealing in more demanding applications. [0005]In the illustrative embodiments the first and second stage heads are interconnected by a removable interstage manifold that is separate from the body. The interstage manifold incorporates an air/water separation construction for improved efficiency. Use of a removable interstage manifold simplifies head and body castings for better core support, better castability and lower casting defect rates, resulting in lower costs. The interstage manifold has a varying cross-section design for separating air and water ejected from the first stage. The removable manifold allows for use of the 0-rings on the heads. The removable manifold has flanges for o-ring or gasket sealing with corresponding flange faces on the heads. Through holes for the bolts in the flanges are sized to accommodate variations in end travel settings. [0006]In the illustrative embodiments, a first stage cone includes an auxiliary discharge port consisting of two timed vent holes formed in the first stage cone. The vent holes provide low speed stability, which improves water handling capabilities and hydraulic noise reduction. The vent holes are positioned so that high vacuum capacity is not affected. The vent holes, also, under hogging conditions, at low vacuum, reduce excessive compression in the rotor buckets, thereby reducing peak power requirements at low vacuum. [0007]Additional features of the present disclosure will become apparent to those skilled in the art upon consideration of the following detailed description of illustrative embodiments. BRIEF DESCRIPTION OF THE DRAWINGS [0008]The detailed description particularly refers to the accompanying figures in which: [0009]FIG. 1 is a perspective view of a two-stage liquid ring pump having a two chambered body connected at a first end to a first stage head and, at a second end, to a second stage head, wherein the first and second stage heads are interconnected by a removable interstage manifold; [0010]FIG. 2 is an irregular cross-sectional view taken along the pumps longitudinal axis and through the first stage inlet, showing the first and second chambers of the body and the first and second stage heads, and further showing a drive shaft extending through the body and heads, the shaft being coupled to a two stage rotor that is positioned between a pair of cones; [0011]FIG. 3 is an exploded view of the liquid ring pump shown in FIG. 1; [0012]FIG. 4 is a perspective view of the two-stage liquid ring pump with the body, shaft, and rotor removed from the pump to show the first stage cone with respect to the first stage head and further showing the flow of air and water through the interstage manifold; [0013]FIG. 5 is a perspective view similar to FIG. 4 but with the interstage manifold removed from the first and second stage heads, and further showing the two chambered inlet port on the second stage head that accepts air and water from the interstage manifold; [0014]FIG. 6a is a perspective end view of the first stage cone conical member shown in FIG. 4; [0015]FIG. 6b is a side perspective view of the cone shown in FIG. 6a; [0016]FIG. 6c is a side plan view of the cone shown in FIG. 6a [0017]FIG. 7a is a perspective view of the interior side of the first stage head showing the air inlet port and the outlet port to the interstage manifold, the first stage head also showing the face for shimming and setting the clearance between the cone and the rotor and the circular rabbet or boss on the head for o-ring sealing; [0018]FIG. 7b is a plan rear view of the exterior side of the first stage head; [0019]FIG. 7c is a cross sectional view of the first stage head taken along view lines 7-7; [0020]FIG. 7d is a plan view looking at the discharge port of the first stage head; Continue reading... Full patent description for Two stage conical liquid ring pump having removable manifold, shims and first and second stage head o-ring receiving boss Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Two stage conical liquid ring pump having removable manifold, shims and first and second stage head o-ring receiving boss patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Two stage conical liquid ring pump having removable manifold, shims and first and second stage head o-ring receiving boss or other areas of interest. ### Previous Patent Application: Bicycle pump Next Patent Application: Pumping system Industry Class: Pumps ### FreshPatents.com Support Thank you for viewing the Two stage conical liquid ring pump having removable manifold, shims and first and second stage head o-ring receiving boss patent info. IP-related news and info Results in 1.49894 seconds Other interesting Feshpatents.com categories: Software: Finance , AI , Databases , Development , Document , Navigation , Error |
||
