US1812724A - Hydraulic suction device - Google Patents

Description

June 30, 1931. STAMM 1,812,724

HYDRAULIC SUCTION DEVICE Filed April 25. 1928 Patented June 30, 1931 UNITED. STATES JOHN G. STAMM, OF EAST CLEVELAND, OHIO HYDRAULIC SUCTION DEVICE Application filed April 23,

My invention relates to improvements in hydraulic induction devices.

An object of my invention is to provide for the eflicient induction of air by a jet of liquid, in such an improved manner that the jet will not be disrupted by the induced flow of air as is thecase in certain prior constructions where a swirling effect upon the air is created in the induction chamber, with consequent disruption of the jet and a considerable resultant loss of efliciency in induction.

Another object of my invention is to provide an improved suction cleaner that may take up water as well as dirt without injury thereto. 7

Another object of my invention is to provide an improved suction device which contains a minimum number of parts, that is inexpensive to manufacture, inexpensive to operate and which requires little or no attention after installation.-

Another object of my invention is to pro: vide a device of the class described that may be used in conjunction with any of the various types of high pressure pumps.

Other objects of my invention and the invention itself will become better understood by reference tothe following description of an embodiment of my invention illustrated in V the attached drawings forming a part of this specification.

Referring tothe drawings: I

Fig. 1 is a vertical medial sectional view of an embodiment of my invention;

Fig. 2is a vertical medial sectional view takenat right angles to that of Fig. 1;

Fig. 3 is a' plan view of the device of Fig. 1; 1 a

Fig. 4 is a fragmentarysectional view of an air inlet; and

Fig. 5 is a diagrammatical view of one of the devices of my invention as connected for operation.

Referring to the figures of the drawings wherein like parts are designated by like reference characters, at 1, Fig. 1, I have provided a hollow eliptical casing having an upper chamber 2, and a threaded orifice 3 adapt- 9 ed to receive a conduit. The upper chamber 1928. Serial No. 272,235.

the lower part a bluntplane 9 is formed havinga pair of modified ridges 10 substantially triangular in shape extending at nearly right angles thereto with their thickest portions at the edges of the opposite sides of the plane and gradually tapering outward towards the lower point 11 as it nears the exhaust end, finally merging with the walls of the casing. The extremity of the exhaust chamber is threaded at 13 to provide means for attaching an exhaust conduit substantially as illustrated in Fig. 5.

"The pear-shaped center 7 which issurrounded on two opposite sides by the passages 5 and 6 is provided with a chamber 14 disposed in the lower portion thereof. A pair of canals 15 and 16 open into the chamber 14 and are threaded to receive therein a pair of conduits not shown. The bottom of the chamber 14 connects with the up per part of the exhaust chamber 8 by a threaded canal 17 into which isscrewed a jet or nozzle 18. A suitable gasket 19 isinterposed between a shoulder 20 of the jet and the end of an enlarged portion of the canal 17 making a fluid tight connection therebetween. The jet is provided with a cylindrical duct 21 extending longitudinally there- 'through and opening into the chamber 8 through the planular surface 9 in substantially axial alignment with the exhaust cham- The upper end of the casing is provided with a pair of oppositely disposed threaded J bores 42 and 43 adapted to receive conduits not shown. When a source of water is applied thereto, the side of the casing may be readily cleaned.

A source of fluid under pressure is conducted by conduits to the two canals 15 and 16 and is forced downward through the orifice 21 into and through the chamber 8.. The high velocity with which the fluid flows induces a current of air to flow hlough the Lid upper suction inlet down ard through the branch passages 5 and 6 and out with the stream of water at 12.

The branching of the passages 5 and 6 causes the air stream to engage the water stream on both sides with equalized pressure preventing the eddying currents that are usuallyset up in devices of this character and eliminating back siphoning of the water. This is further facilitated by the stream line ridge 10 located on the opposite sides of the air jet. The fiat planular character of the housing and the fact that the jet is so formed that no hollow spaces or air pockets are in back of the jet, closely adjacent to it, also tends to prevent the gathering of globules of water which would impair the etiiciency of the device.

As best shown in Fig. t I have shown a modified form of upper intake 22 which is substantially L-shaped, although the operation is the same as in the device having the intake opening vertically. I

The device may be constructed of a single casting of castiron, malleable iron, brass or any metal which may be rendered rust resisting. I preferably drill the canal of the jet 18 by using suitable jigs so that the canal extending through the jet is in axial alignment with the chamb r 8. The intake and exhaustends'of the device may he hexagonal inshape to receive a wrench for installation purposes.

In 5 I have illustrated diagrammatically one system of connecting the device of my invention, wherein the source of fluid power comprises a'motor andarotary pump 31 connectedby conduits 32 to thedev'ic'e, and having a shut-off valve 33 interposed in the conduit. An exhaust pipe 34 is connected to the lower end of the casing and may discharge to the sewer. I have shown a flexible hose 35 connected to the air intake which is provided with a nozzle 36 which may be any of the various types. I find, that with the device connected as shown,that with pressure of 300 pounds of water, it is possible to displace approximately 300 cubic feet of air per minute, which creates a very eiiicient suction device capable of sucking up water, dirt, or the like which ordinary suction devices cannot handle. This is especially to be desired around automobile washing racks where it maybe used in connection with high pressure washing systems.

The size of the canal in the jet to be used maybe varied by interchangeable jets which are screwed into the casing by a suitable spanner wrench which may be inserted in notches23 in the large end of the jet.

Having thus described my invention in a preferred embodiment, I am aware that numerous and extensive departures may be 5 made from the embodiment herein illustrated and described but without departing from the spirit of my invention.

I claim:

1. In an air suction device, a hollow casing provided with a water conduit construction therein, an air-receiving passageway, and a discharge passageway for mixed air and water, the conduit construction communicating with the outside of the casing whereby water may be conducted thereto and terminating inwardly of the casing in a substantiallyplanularsurface disposed at substantially right angles to the direction of flow of air through the casing from the air-receiving passageway to the discharge passageway, a removable nozzle piece in the conduit construction provided with a minute duct having an orifice disposed in said planular surface, whereby a jet of water emerging from the orifice impinges at right angles upon the air in the casing in contact with said surface and whereby air in motion toward said emerging water jet moves at right angles to said jet and into'contact therewith, the discharge passageway being of smaller crosssectional area than theair-rece'iving passageway, the discharge passageway beinglongitudinally spaced from and axially disposed relative to the said'orifice and the casing being provided with lateral walls convergingtoward the discharge passageway from the orifice.

2. In an air suction device, a hollow casing provided with a water conduit construction therein, an air-receiving passageway, and a discharge passageway for mixed air and water, the conduit construction communicating with the outside of the casing whereby water may be conductedthereto and terminating inwardly of the casing in a substantially planula'r surface disposed at substantially right angles to-the direction of flow of air through the casing from the air-receiving passageway to the discharge passageway, a removable nozzle piece in the conduit construction provided with a minute duct having an orifice disposed in said plan'ular surface, whereby a jet of water emergingfrom the orifice impinges at right angles'upon the air in the casing in contact with said surface and whereby air in motion toward said emerging water jet moves at right angles to said jet andinto contact therewith, the discharge passageway being of smaller cross-sectional area than the air-receiving passageway.

3. In an air suction device, a walled casing, provided with a discharge passageway, casing walls converging toward the discharge passageway, an air inlet passageway in the casing wall, a water cohduit construetion disposed generally intermediately of the two passageways, the conduit construction communicating with the exterior of the casing whereby water may be conducted thereto'and terminating inwardly of the casing in a relatively small discharge duct, the conduit construction being provided with a planular face disposed substantially at right angles to a central axis of the discharge passageway and the duct terminating in an orifice disposed substantially symmetrically centrally of the planular face, the duct being coaxial with said central axis, the parts being so arranged that air within the casing and in contact with said planular surface may be impinged upon at said surface by said jet at right angles to the air at said surface, and so that air in motion through the casing from the inlet passageway to the outlet passageway may move transversely over said planular face at right angles to said jet and into engagement with the jet.

In testimony whereof I hereunto affix my signature thisQOth day of April, 1928.

JOHN G. STAMM.

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