Jet pump for transfer of material
AssigneeWalker-Dawson Interests, Inc.
InventorsRichard F. Dawson, Robert J. Hutchinson
Life of this patent
Estimating the term…
Abstract
An improved liquid jet pump for moving solid or other materials is provided. The liquid jet pump includes a nozzle assembly, a suction chamber, and a target tube. The nozzle assembly pulls in atmospheric air, causing an air bearing effect around the liquid jet exiting the nozzle assembly. The liquid jet passes through the suction chamber with minimal deflection, reducing cavitation and improving mixing as educted materials enters the suction chamber and combines with the liquid jet. The combined material is directed into the target tube, which is designed to detach from the other components and is composed of abrasion-resistant material. The target tube absorbs the majority of wear, and provides ease of changing parts.
Claims22
An eductor jet pump comprising:
- a nozzle assembly comprising a nozzle housing defining at least one air hole, a fluid nozzle which defines a constricted throat, and an air injection nozzle which defines a nozzle opening, said fluid nozzle and said air injection nozzle forming an air gap which is in fluid communication with said at least one air hole and which surrounds said constricted throat, said constricted throat terminating at said nozzle opening, said at least one air hole being located on or before said nozzle opening;
- said nozzle assembly feeding into a suction chamber;
- a discharge pipe which feeds into said constricting throat of said nozzle assembly;
- a pumping means to force fluid through said discharge pipe and said constricted throat;
- an outlet pipe which defines a receiving outlet downstream from said suction chamber;
- a suction pipe which defines a suction inlet and which has a first end connected to said suction chamber at an angle greater than 0° and less than 180°, and a second end open to the surrounding environment;
- wherein said suction chamber is in fluid communication with said receiving outlet, said suction inlet and said nozzle opening of said nozzle assembly.
An eductor jet pump comprising:
- a nozzle assembly comprising a nozzle housing defining a plurality of air holes, a fluid nozzle which defines a constricted throat, and an air injection nozzle which defines a nozzle opening, said fluid nozzle and said air injection nozzle forming an air gap which is in fluid communication with said air holes and which surrounds said constricted throat, said constricted throat terminating at said nozzle opening, said air holes being located on or before said nozzle opening;
- a pipe providing an inlet to said constricting throat of said nozzle assembly;
- a pumping means to force fluid through said constricted throat;
- a concentric wear plate which defines a receiving outlet and is attached to a support with a first end and a second end, said first end of said support detachably connected to said suction chamber;
- and said second end of said support detachably connected to an outlet pipe;
- a suction pipe which defines a suction inlet and which has a first end connected to said suction chamber at an angle greater than 0 and less than 180° degrees, and a second end open to the surrounding environment;
- and
- a suction chamber which encloses said receiving outlet, said suction inlet and said nozzle opening on said nozzle assembly.
Dependencies are inferred from the claim text.