US3214149A

US3214149A - Cavitation pump

Info

Publication number: US3214149A
Application number: US39479A
Authority: US
Inventors: Hugo F Budzien
Original assignee: Beloit Iron Works Inc
Current assignee: Beloit Iron Works Inc
Priority date: 1960-06-29
Filing date: 1960-06-29
Publication date: 1965-10-26
Anticipated expiration: 1982-10-26

Description

ct. 26, 195 H. F. BUDZIEN 3,214,149

CAVITATION PUMP Oct. 26, 1965 H, F. BUDZIEN 3,214,149

CAVITATION FUMP Filed June 29, 1960 2 Sheets-Sheet 2 United States Patent Office 3,214,149 Patented Get. 26, 1965 3,214,149 CAVITATEON PUMP Hugo F. Budzien, Beloit, Wis., assigner to Beloit iron Works, Beloit, Wis., a corporation of Wisconsin Filed June 29, 1960, Ser. No. 39,479 4 Claims. (Cl. 261--29) The present invention relates to an improved mechanism for generating high energy impulses in a fluid.

The invention contemplates providing an impeller rotor divided into sections and each section having impeller blades with the areas of the rotor between the blades being solid. A housing provides a chamber in which the impeller rotor rotates and has a plurality of inlets and outlets arranged around the periphery of the chamber in a housing. T-he rotor will generate high energy impulses in the liuid and can be driven at a speed so that cavitation is created at the inlets to enhance the generation of impulses. Air may be bled into the housing sections between inlets and outlets. The housing may be surrounded with a shroud and arrangements made to connect each of the inlets and connect each of the oulets for obtaining directional flow.

A feature of the invention is the provision of a mechanism of the above nature which is well adapted to numerous uses and is especially well adapted to use as a iiow blender for a paper mill head box to reduce lump formation and enhance distribution of fibers. The device is also well suited for other uses and can be employed in the field in bodies of water to separate silt and moss into fine particles to move into deeper water and keep beaches clean. With the addition of air it may be used to prevent bodies of water from freezing. With increased speed and power it may be employed to destroy weeds and harmful fish. The mechanism may also be employed in industrial and domestic cleaning.

Accordingly, an object of the invention is to provide an improved mechanism which is capable of creating high energy impulses in fluid and can be readily adapted to directional flow for use as a pump.

A further object of the invention is to provide a mechanism of the type described for generating high energy impulses which is of a simplified construction and can be made by modifying existing turbine type pumps.

A further object of the invention is to provide a mechanism for generating high energy impulses in liquid and which can be used to aerate the liquid.

A still further object of the invention is to provide a high energy impulse creating mechanism of simplified design which is mechanically driven and is adaptable to a wide range of uses.

Other objects and advantages will become more apparent with the teaching of the principles of the invention in connection with the disclosure of the preferred embodiments thereof in the specication, claims and drawings, in which:

FIGURE 1 is an elevational View of a mechanism for creating high energy impulses in fluid constructed in accordance with the principles of the present invention;

FIGURE 2 is an enlarged cross-sectional view taken substantially along line II-II of FIGURE 1;

FIGURE 3 is a partial sectional view on an enlarged scale taken substantially along line III--III of FIGURE 2;

FIGURE 4 is a sectional view taken through a pump illustrating a modified form of the invention; and

FIGURE 5 is a sectional view taken substantially along line V-V of FIGURE 4.

As shown on the drawings:

The unit illustrated at in FIGURES 1 through 3 produces a high energy impulse in fluid when immersed therein, and the unit 11, shown in FIGURES 4 and 5 is adapted to directional flow so as to both create a high energy impulse and act as a pump. For convenience of reference, the units 10 and 11 will each be referred to as a pump.

The pump 10 is driven by a motor 12 connected to the pump by a drive means within a drive housing 13.

The pump 10 includes a housing 14 formed of housing .parts 14a and 14b held together by bolts 15. The fhousing is hollow so as to form a pump chamber 16 therein in which is located a rotor 17.

As illustrated in FIGURES 2 and 3, the rotor 17 is provided with impeller blades 18 around the peripheral edge with the blades providing generally circumferential facing impulse creating surfaces 19. These surfaces are effectively created by cutting grooves in the rotor 17 leaving a reinforcing web 17a of material between the blades 18. The blades and the impulse creating surfaces` 19 are arranged in circumferentially spaced sections or groups 20 with the rotor area between the sections being without blades or impulse creating surfaces. Preferably, the areas 21 between the rotor sections 20 are filled so as to be substantially the same diameter as the outer diameter of the blades 18. A convenient method of making the rotor is to utilize a turbine type pump rotor and block out the spaces between the blades in the areas between the sections. The spaced sections provide an intermittent liow in the form of pulses or waves which cause a vibration in the iiuid flowing through the chamber so as to create an impulse of substantial energy in the delivery of the rotor.

The pump housing is preferably immersed in the iiuid and the housing 14 is provided with inlets 22 and outlets 23 which preferably extend radially through the housing to communicate with the chamber 16. The inlets 22 and outlets 23 are arranged in sections with each inlet and outlet together defining a housing section 24. The chamber 16 within the housing may be arranged. so that an enlarged flow space 2S is provided between each inlet and outlet of a housing section 24. Flow between sections is substantially prevented by radial housing webs 14C.

The rotor is driven in rotation and at `certain speeds in accordance with the temperature and conditions of the fluid being pumped it is possible to cause cavitation which will add to the produced vibration or impulses to a substantial degree making the unit more effective. To prevent damage by the cavitation, the r-otor should be of stainless steel, or may be of rubber molded on the rotor or plastic. These materials can also be applied to the housing and rubber shaft bearings can be used for the shaft driving the rotor.

The rotor 17 is supported on a shaft 26 which is drivingly connected to the motor by a connection 27. The shaft is supported in ball bearing assemblies 28 supported in a tubular hub 14d of the housing 14. A Huid seal 29 prevents leakage of the liuid pumped into the bearing area of the hub. The drive housing 13 includes a tubular outer shell 3l) mounted over the housing hub 14d and sealed thereto by annular members 31 so `that the housing can be immersed.

It will of course be recognized that a motor 12 may be employed which has a waterproof housing so that the entire unit may be immersed.

Air can be bled into one or more sections of the housing to aerate the fluid, and for this purpose a port 31 is located, as illustrated in FIGURE 2, to bleed air into the housing chamber 16 between the inlet and outlet ports. The port is shown as provided with a tube 32 of lead to an atmospheric source of air. In the pumping of water, the aeration of the water will aid in the prevention of freezing.

In the arrangement of FIGURES 4 and 5 directional iiow is obtained so that the fluid is both. pumped and given a high energy impulse or vibration. An inlet conduit means 33 is connected to each of the pump housing inlets and an outlet conduit means 34 is connected to each of the pump housing outlets. For accommodating this connection, the pump of FIGURES 4 and 5 which includes a rotor 17 and a housing 14 is provided with inlets 22 which turn in an axially extending portion 37 to open from the axial side of the housing 14. Outlets 23 are selected to Open radially outwardly. An inlet manifold 35 is attached to the side of the housing 14 and has a manifold chamber 36 which communicates with each of the inlet portions 37.

An outlet shroud 38 surrounds the housing 14' and provides an annular outlet chamber 39 which communicates with each of the outlets 23. Thus when the rotor is rotated, fluid ows in the direction shown by the arrows from the inlet conduit means 33 to the outlet conduit means 34.

As a summary of operation, with reference to FIG- URES 1, 2 and 3, the rotor 17 is rotated within the pump housing chamber 16 to generate an impulse in the fluid that flows from the inlets 22 to the outlets 23 when the housing is immersed in liuid. Preferably the rotor is driven at a speed to create cavitation and the iuid is aerated by bleeding air in through a port 31 between the inlet 22 and the outlet 23.

In a preferred form, a larger number of rotor sections 20 are provided than housing sections 24. In the arrangement illustrated ten rotor sections are provided and eight housing sections are provided.

With the directional ow arrangement provided in FIG- URES 4 and 5, the unit is used to deliver and mix paper stock in a paper making machine. The unit may be used for sewage aeration and reduction of solids to promote bacterial action. It may be used for cleaning in various fields, for weed control for streams and lakes, and for iish control. The unit may be used for industrial or domestic cleaning and a small high speed unit may be employed in a container for a dishwasher, for example. At a selected frequency it may be used immersed in a bath for physical therapy for the treatment of parts of the body for relaxation and the relief of aches and pains.

Thus it will be seen that there has been provided an improved pump of the type described which is simple to construct and operate and is capable of continuous reliable operation with good ethciency and minimum power requirements, and which meets the objectives and advantages hereinabove set forth.

The drawings and specification present a detailed disclosure of the preferred embodiments of the invention, and it is to be understood that the invention is not limited to the speciiic forms disclosed, but covers all modiiications, changes and alternative constructions falling within the scope of the principles taught by the invention.

I claim as my invention:

1. A mechanism for producing high energy impulses in a fluid comprising,

an annular housing having a chamber therein, a plurality of inlets and a plurality of outlets spaced radially outwardly of said chamber and communicating with the chamber through the circumferential wall of said annular housing with each inlet and outlet together defining a housing section with each housing section being of substantially the same circumferential length,

all of said outlets opening throughsaid housing into a common open annular delivery zone outwardly of said housing, all of said inlets opening through said housing into said common annular delivery zone so that the housing may be inserted bodily into a tank for creating impulses in iiuid in the tank with the same fluid flowing into the inlets and flowing out through said outlets,

a rotor in said chamber having impulse creating surfaces thereon with the surfaces arranged in rotor sections and each rotor section circumferentially spaced from adjacent rotor sections,

said rotor having a cylindrical outer surface with said impulse creating surfaces formed by recesses in said surface and the spacing between said rotor sections being greater than the width of said recesses.

and means for driving the rotor at a speed to generate high energy impulses in uid moving through the chamber.

2. A mechanism for producing high energy impulses in a fluid in accordance with claim 1 wherein the spacing between said housing sections is greater than the spacing between said impulse surfaces and there being a greater number of rotor sections than housing sections.

3. A mechanism for producing high energy impulses in a iluid in accordance with claim 1 wherein means are provided for adding air to the uid discharged through said outlets.

4. A mechanism for producing high energy impulses in a fluid in accordance with claim 1 wherein at least one air bleed port is provided opening into said chamber between an inlet and an outlet for mixing air with the liuid discharged through the outlet.

References Cited by the Examiner UNITED STATES PATENTS 2,243,309 5/41 Daman et al 259-96 2,248,459 7/41 Kiesskalt 116-137 2,280,272 4/42 Sullivan 103-2 2,566,892 9/51 Jacobs 103-2 2,635,860 4/53 McLeod 259-96 2,730,067 1/.56 Schaufler 116-137 2,805,626 9/ 57 Pezzillo et al. 103-96 2,832,199 4/58 Adams 103-136 X 2,842,062 7/58 Wright 103-95 2,865,618 12/58 Abell 261-93 2,875,988 3/59 Wysong.

2,882,149 4/59 Willems 259-96 2,944,802 7/ 60 Daman 261-93 2,961,967 11/60 Meyer et al 103-96 FOREIGN PATENTS 1,047,176 12/58 Germany.

698,371 10/53 Great Britain. 534,090 10/ 55 Italy.

HARRY B. THORNTON, Primary Examiner,

Claims

1. A MECHANISM FOR PRODUCING HIGH ENERGY IMPULSES IN A FLUID COMPRISING, AN ANNULAR HOUSING HAVING A CHAMBER THEREIN, A PLURALITY OF INLETS AND A PLURALITY OF OUTLETS SPACED RADIALLY OUTWARDLY OF SAID CHAMBER AND COMMUNICATING WITH THE CHAMBER THROUGH THE CIRCUMFERENTIAL WALL OF SAID ANNULAR HOUSING WITH EACH INLET AND OUTLET TOGETHER DEFINING A HOUSING SECTION WITH EACH HOUSING SECTION BEING OF SUBSTANTIALLY THE SAME CIRCUMFERENTIAL LENGTH, ALL OF SAID OUTLETS OPENING THROUGH SAID HOUSING INTO A COMMON OPEN ANNULAR DELIVERY ZONE OUTWARDLY OF SAID HOUSING, ALL OF SAID INLETS OPENING THROUGH SAID HOUSING INTO SAID COMMON ANNULAR DELIVERY ZONE SO THAT THE HOUSING MAY BE INSERTED BODILY INTO A TANK FOR CREATING IMPULSES IN FLUID IN THE TANK WITH THE SAME FLUID FLOWING INTO THE INLETS AND FLOWING OUT THROUGH SAID OUTLETS, A ROTOR IN SAID CHAMBER HAVING IMPULSE CREATING SURFACES THEREON WITH THE SURFACES ARRANGED IN ROTOR SECTIONS AND EACH ROTOR SECTION CIRCUMFERENTIALLY SPACED FROM ADJACENT ROTOR SECTIONS, SAID ROTOR HAVING A CYLINDRICAL OUTER SURFACE WITH SAID IMPULSE CREATING SURFACES FORMED BY RECESSES IN SAID SURFACE AND THE SPACING BETWEEN SAID ROTOR SECTIONS BEING GREATER THAN THE WIDTH OF SAID RECESSES. AND MEANS FOR DRIVING THE ROTOR AT A SPEED TO GENERATE HIGH ENERGY IMPULSES IN FLUID MOVING THROUGH THE CHAMBER.