US2019968A - Dredging apparatus - Google Patents

Dredging apparatus Download PDF

Info

Publication number
US2019968A
US2019968A US680382A US68038233A US2019968A US 2019968 A US2019968 A US 2019968A US 680382 A US680382 A US 680382A US 68038233 A US68038233 A US 68038233A US 2019968 A US2019968 A US 2019968A
Authority
US
United States
Prior art keywords
shell
water
injector
barrel
boosting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US680382A
Inventor
Herman H Holloway
Original Assignee
Herman H Holloway
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Herman H Holloway filed Critical Herman H Holloway
Priority to US680382A priority Critical patent/US2019968A/en
Application granted granted Critical
Publication of US2019968A publication Critical patent/US2019968A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/902Component parts, e.g. arrangement or adaptation of pumps for modifying the concentration of the dredged material, e.g. relief valves preventing the clogging of the suction pipe

Description

Patented Nov. 5, 1935 UNITED STATES PATENT OFFICE 3 Claims.

This invention relates to apparatus for pumping sand, gravel or other subdivided material from, places where suflicient water is available to serve as a vehicle for the material and lend to it sufficient fluidity to enable it to respond to the pump.

In apparatus of this kind, it has long been proposed to tap into the suction pipe, through means of elements coacting therewith after the manner of an injector, a boosting water supply furnished by an independent pump which will largely relieve the back flow load on the material pump and insure an impelling force that will materially increase the output of the apparatus. But in previously suggested arrangements of this kind known to me, the boosting instrumentalities have been irrationally designed, with the result that the increased capacity bestowed has not been economically commensurate with the power expended for the boosting Water supply.

The object of the present invention is to provide a highly efficient construction of boosting instrumentality for dredging apparatus of the kind aforesaid. and the invention proceeds upon the principle of having the intake element of the suction pipe designed as a relatively large barrel of substantially uniform diameter through which induced fluid (the material and its vehicular water) to the full capacity of the barrel, will flow as a projectile free from eddy currents, serious torsional disturbance or the like, so that when it meets the boosting water it will be in condition to receive the latter with full and unifo-rm propelling effect throughout its circumference; also in having the intake end of this barrel dened by rationally narrow walls so that material may enter the barrel from points around the intake end without having to travel a. substantial distance across a transverse face which, in the older arrangements, materially decreases eflciency; also in having the boosting or impelling column of water associated externally and in the form of an annulus surrounding the intake barrel and induced column of fluid, as distinguished from meeting the latter in the form of an axial jetl and with the result of causing the booster column, as it meets the induced column within the diminishing portion of the injector shell, to be brought into effective frictional contact with the induced column and saving the latter from retarding friction against the inner Wall of the shell; also in having the delivery of the boosting column of water to the surrounding injector shell arranged through the medium of an elbow or T-connection, the head of which constitutes a, chamber completely surrounding the intake barrel at a distance which maintains a water supply materially larger in volume than that which passes the annular injector orifice, so that the boosting water, by 5 maintaining pressure in this large surrounding chamber, develops an injecting annulus of water that is uniform throughout its circumference and has a velocity of iiow that is materially greater than obtained in either of the previous l0 arrangements known to me, and especially the arrangement where the impelling water flows in a passage of approximately uniform section composed of an outermost leg extending oppositely to the pumping direction and then abruptl5 1y reverses its flow through a constricted bend which largely absorbs its energy as it enters an inner annular leg leading toward the injector; or the previously known construction in which the boosting column meets the injector shell at 20 an obtuse angle, with the result that the boosting water is driven to the far side of the shell where it deflects and develops spiral currents that are much less efficient in their induction effect upon the pumped uid; also in having a venturi im- 25 mediately following the jet orifice and having a part of the receiving end of this venturi formed by the converging shell into which the orice discharges.

In order that the invention may be fully un- 30 derstood, the preferred embodiment thereof is shown, by Way of illustration, in the accompanying drawing, in which- Figure 1 is an elevational view of a portion of a floating vehicle upon which is mounted a con- 35 ventional dredging pump of rotary type, and an auxiliary boosting water pump, together with the suction pipe of the pump first named, the delivery pipe of the auxiliary pump, and the instrumentalities through which the remote ends 40 of these pipes are connected and associated after the manner of an injector; and

Figure 2 is an axial section on an enlarged scale, of those portions of Figure 1 having to do with the injecting or boosting feature of the 45 invention.

A represents a portion of a vessel or floating vehicle mounting a rotary pump B of any appropriate conventional kind. C represents the axially associated suction pipe of pump B, and D rep- 50 resents its tangential discharge pipe. Pipe C, through conventional intermediate connections which may include a exible section E and any necessary length of rigid conduit F, leads from an intake barrel I through an interposed injector 2, the impelling fluid of which preferably consists of Water supplied through pipe G leading from auxiliary pump H having outboard submerged intakepipe I.

Intake barrel I is of such substantial length, say, for instance, five 'or six times its diameter, as will cause it to develop. in response to suction, a projectile or body of pumped fluid (dredged material with its vehicular complement of water) filling its bore and largely free from vortical disturbances, eddy currents or the like, so that upon reaching the injector orice 3 in the choke shell 4 it will have substantial momentum and 11npelling force stored in it. Shell 4 is forwardly tapering and in rear of orifice 3 unites with the cylindrical shell of the injector 2, which is in the form of a T-member, the head 5 of which is of such materially greater diameter than the external diameter of the barrel I which it surrounds, as to develop a substantial provisional water chamber 6 into which boosting water pipe G delivers through the stem 'I of the T in a direction perpendicular to the ow of the material pumped, with the result that the provisional body of water in the chamber Ii, maintained by pump H, will cause an annulus of water to be delivered at the orifice 3 which is substantially uniform in density over its entire circumference, as well as at constant volume and speed. This annular water jet has a relatively high velocity in response to pressure maintained in provisional reservoir 6, being free from flow obstructions other than jet opening 3A and enters the converging shell 4 in full contact with the inner surface of the shell and with lubricating effect or elimination of frictional resistance upon the projectile of water flowing from barrel I, and thus produces altogether superior impelling'effect upon the fluid coming from the barrel. 8 represents a Venturi section in the pipe F that is conventional as to design and function, except that in the present instance its converging leg 8a is materially shorter than its diverging leg 8b, and the former is made up in part of the converging injector shell 4. Shell 4 andA converging Venturi leg 8aare not necessarily of the same angle of convergence; in fact, the angle of shell 4 is preferably greater thanV that of leg 8a but the two merge together with a minor change in angle and the shell thus serves as a portion of the venturi.

8.1:, 8am, and 4:1: represent bushings or liners for the elements 8, 8a and 4, which are readily replaceable when Worn away by erosion from the material pumped; the liners being preferably in abutment with the several flange couplings or held in column by an intervening ring 5, as may be desired.

I0 represents a separately formed header for the head 5 of the T, and this header is threaded upon the barrel I as shown and has associated with it a jamb nut II in order that barrel I may be adjusted axially relatively to converging shell 4 in regulating the orifice 3.

A feature in the most approved design of the apparatus is the flare 3a. at the discharge end of the intake barrel I through which the induced fluid projectile is enabled to meet the injecting annulus from the orifice 3 without eddy-forming offset that would result from an abrupt barrel section at thisv point.

The several elements of the injector, its associated parts, and the pipes which it connects are all made of readily assembled and easily replaceable parts, and the construction and assembly is such that a high eiciency of injector and propelling effect is obtained.

What is claimed is:

1. In dredging apparatus, an injector shell comprising a straight wall tubular section terminating with flanged ends and having a laterally oset intake opening intermediate said flanged ends, a choke shell co-axially joined to the injectorshell and having walls converging in a direction forward of the injector shell, a Venturi shell co-axially joined to the restricted end of the choke shell and extending from and in advance thereof for a distance exceeding the length of the choke shell, an intake barrel comprising a straight pipe section entering the injector shell through one end thereof and extending coaxially through the same with its discharge end terminating within the choke shell in co-operating relation with the converging walls thereof, thereby providing an annular orifice through which Water'is injected into the choke shell from the injector shell, and means for axially adjusting the position of the intake barrel relatively to the converging walls of the choke shell for changing the effective port area of said orifice.

2 'Ihe combination as set forth in claim land in which the joint between the injector shell and the choke holds a spider which embraces the intake barrel andserves; to support the forward end ofthe same. v

3. 'I'he combination as set forth in claim l and in which'thelength of the intake barrel is not less than three times its diameter.

HERMAN H. HOLLOWAY.

US680382A 1933-07-14 1933-07-14 Dredging apparatus Expired - Lifetime US2019968A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US680382A US2019968A (en) 1933-07-14 1933-07-14 Dredging apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US680382A US2019968A (en) 1933-07-14 1933-07-14 Dredging apparatus

Publications (1)

Publication Number Publication Date
US2019968A true US2019968A (en) 1935-11-05

Family

ID=24730866

Family Applications (1)

Application Number Title Priority Date Filing Date
US680382A Expired - Lifetime US2019968A (en) 1933-07-14 1933-07-14 Dredging apparatus

Country Status (1)

Country Link
US (1) US2019968A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2784841A (en) * 1953-04-13 1957-03-12 American Agricultural Chem Co Hydraulic classification of solids
US2799540A (en) * 1955-09-15 1957-07-16 Makinson Clifford Log conveying
US2861841A (en) * 1952-12-29 1958-11-25 Arthur H Pengra Hydraulic lift for fish and the like
US3119344A (en) * 1947-09-12 1964-01-28 Richard T Hoffman Hydraulic dredge
US3153290A (en) * 1962-01-30 1964-10-20 Asia Dredging Co Ltd Apparatus for subaqueous excavations
US3306672A (en) * 1964-07-27 1967-02-28 Juan E Kleiner Pneumatic process for conveying bulk material and a device for its application
US3446157A (en) * 1967-07-27 1969-05-27 Schafer Davis Eng Co Inc Means for aspirating liquid and solid materials
US3628263A (en) * 1968-07-15 1971-12-21 Spanstaal Improvements in pressure differential measuring means for suction dredging instruments
US3973802A (en) * 1975-03-06 1976-08-10 General Resource Corporation Conveyor line fluidizer
US4217212A (en) * 1978-06-19 1980-08-12 Deal Troy M Method of pumping and processing phosphate slime for land reclamation
US4217709A (en) * 1978-02-24 1980-08-19 The Research Corporation Of The University Of Hawaii Submarine sand sampler
US4422833A (en) * 1981-05-11 1983-12-27 Free Flow, Inc. Pneumatic transfer system and a fluid flow control device therefor
US4681372A (en) * 1986-02-11 1987-07-21 Mcclure William L Deep sea mining apparatus
US5129167A (en) * 1989-08-29 1992-07-14 Ikikaihatu Yugen Kaisya Method of and apparatus for preventing diffusion of muddy water in sand gathering equipment
US5836745A (en) * 1995-12-12 1998-11-17 Sippican, Inc. Fluid recovery apparatus and method using a motive force
US6058630A (en) * 1997-06-16 2000-05-09 Brown; Raymond C. Fluid seal for maintaining vacuum
EP1251087A1 (en) * 2001-04-20 2002-10-23 Bruno Falkenstein GmbH Method and device for assisting a suction process and suction unit
CN107075946A (en) * 2015-08-28 2017-08-18 永田彻三 Ore lifting system and raise ore deposit method

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3119344A (en) * 1947-09-12 1964-01-28 Richard T Hoffman Hydraulic dredge
US2861841A (en) * 1952-12-29 1958-11-25 Arthur H Pengra Hydraulic lift for fish and the like
US2784841A (en) * 1953-04-13 1957-03-12 American Agricultural Chem Co Hydraulic classification of solids
US2799540A (en) * 1955-09-15 1957-07-16 Makinson Clifford Log conveying
US3153290A (en) * 1962-01-30 1964-10-20 Asia Dredging Co Ltd Apparatus for subaqueous excavations
US3306672A (en) * 1964-07-27 1967-02-28 Juan E Kleiner Pneumatic process for conveying bulk material and a device for its application
US3446157A (en) * 1967-07-27 1969-05-27 Schafer Davis Eng Co Inc Means for aspirating liquid and solid materials
US3628263A (en) * 1968-07-15 1971-12-21 Spanstaal Improvements in pressure differential measuring means for suction dredging instruments
US3973802A (en) * 1975-03-06 1976-08-10 General Resource Corporation Conveyor line fluidizer
US4217709A (en) * 1978-02-24 1980-08-19 The Research Corporation Of The University Of Hawaii Submarine sand sampler
US4217212A (en) * 1978-06-19 1980-08-12 Deal Troy M Method of pumping and processing phosphate slime for land reclamation
US4422833A (en) * 1981-05-11 1983-12-27 Free Flow, Inc. Pneumatic transfer system and a fluid flow control device therefor
US4681372A (en) * 1986-02-11 1987-07-21 Mcclure William L Deep sea mining apparatus
US5129167A (en) * 1989-08-29 1992-07-14 Ikikaihatu Yugen Kaisya Method of and apparatus for preventing diffusion of muddy water in sand gathering equipment
US5836745A (en) * 1995-12-12 1998-11-17 Sippican, Inc. Fluid recovery apparatus and method using a motive force
US6058630A (en) * 1997-06-16 2000-05-09 Brown; Raymond C. Fluid seal for maintaining vacuum
EP1251087A1 (en) * 2001-04-20 2002-10-23 Bruno Falkenstein GmbH Method and device for assisting a suction process and suction unit
CN107075946A (en) * 2015-08-28 2017-08-18 永田彻三 Ore lifting system and raise ore deposit method

Similar Documents

Publication Publication Date Title
US4487553A (en) Jet pump
US2312848A (en) Motor driven pump unit
US2316781A (en) Solution mixing and dispensing device
SU679164A3 (en) Pipe connection for measuring medium rate-of-flow
US3499412A (en) Kort nozzle
US4756324A (en) Hydrodynamic nozzle for pressurized water cleaning of water, discharge and surface water pipes
US3163119A (en) Inducer
US1462395A (en) Construction of spraying nozzles or atomizers
US2971325A (en) Jet propulsion device for operation submerged in water
GB1214818A (en) Improvements in and relating to apparatuses for introducing one fluid into another
US846100A (en) Attachment for steam-boilers.
US4212592A (en) Electromagnetic pump for molten metals
EP1549439A1 (en) Shower head
US3693329A (en) Hub assembly for in-line centrifugal separator
US3212217A (en) Cleaning device
US2632597A (en) Jet pump
US1986600A (en) Variable orifice choke valve
US2444615A (en) Eductor
GB1192194A (en) Silencer for Suction or Discharge of Fluids Unders Pressure
US4783010A (en) Method and device for pulverizing a solid fuel material
US4819314A (en) Jet nozzles
US2044088A (en) Hydraulic material elevator
US3724499A (en) Anti-cavitation system for fluid loading arms
US4054399A (en) Hydraulic ram valve unit
US2781059A (en) Flow control device