US1986148A - Silt removing head - Google Patents

Description

Jan. 1, 1935.

C. B. HARP S ILT REMOVING HEAD Filed April '25, 1934 7 INVENTQR 0HARLE$ a. HARP- ATTORNEY Patented Jan. I 1935 i I i i i UNITED PATENT OFFICE f SILT REMOVING HEAD g Charles :LosAngeles, Calif. Atptatsamtea.19h. lserial No. 721,945 11 Claims. (01.3'7-78) This invention relates to asilt removing-head tion B may range over the 'areairomwhich silt adapted to be used in a silt removing'syst'em. Dis to be removed and a number of heads C Silt carrying liquids will deposit silt at quiescent maybe distributed over the .bed and in'positions zones, due to settling of the-silt. Such quiescent determined to be most eli ective for removal of zones are present on the upside or dams silt. Thesilt removing system is intended to be streams, in natural and artificially formed waterused intermittently as a deposit of siltfhas accuaccumulating basins and other places. in many mu-lated necessitating removal. Thus. there may instances settling chambers are provided for the be comparatively long periods during which the purpose of separating out some of the silt. Ob heads 'are'not in use. Silt may pack around'the vi ly/ h accumulated im be removed heads, enter orifices and make the system infrom time to time and this removal should be operative unless the heads are designed to preeffectedexpeditiously, economically andwith l'east vent lodgment of silt. disturbance o th remainin water system. In In the present invention, protection fromlodg- Patent 1,777,491 ranted vt0 c b '7, merit 'ofsilt is accomplished .bya hood which 193 r Method of desiltine "channels, I have may bear conical'form with the crown or'tipj' disclosed a hydraulic methodof desi-lting basins. at the upper side. The hood 5 may be of sheet The present invention appertainstosiltremoving' metal having at its hem an annular flange 6. h ads which be us d in a ryin out such conneeteuto the'fhood 5 by'weloihg or an other am th d-wh th app ed t ha n s rany asin suitatilemeans are stilts 7. These stilts may be in which silt may settle. metal bars having angular bends so as to have. #0

T i ts f th s v nti ar t provide a le s which ma be dispos d per endicular and s t removing h ad unted p a nt y in the tonne oagelbel'ow the hood; They notes a trash b m f a i havi y r ll of the l raekito ipreventehtranoe' of trash into the hood. l win f a r r r to pr v n ggin of Stilts? maybe set ihtne foundation B to perinathe s ush i a e ope s; s u ture to provide a nently fasten the'head in selected position over slush mixing chamber wherein turbulence of the the b d I water and entrained silt is maintained to cause A slush conductor 'in'the form of'apip 8 .e'xits ready 110W into e 5 11 C dH S; 11188115 tends along the bed and at each head has ariseio cl n h lu h conductor in a e p i 9" which projects "centrally into the hood. The

if desired, to occlude e t a ce o s us to the top of the riser is enlarged and lateral inlet open- 30 s ush du t a d d tails f stru tu nings 10 are provided therein, these openings being tr butins t s p i ty, pa t s.v e th, adjacent the crown of the hood. The top'of riser and durability of such heads together with ease 9 maybe closed by a chamber "11 which h s and certainty of operation. s pending nozzles 12 directed to project jets of These j ts a a plish d by m ans of water across the "openings 10. chamber '11 is t embodiment of y iIlVeIlliiOn' G 'SC 'Q t connected to a conduit .13. The latter isadapted pp description d illustrated in t 1 to beconnected to a source or liquid under pros p y raw erin whichz V sure. When water under pressure is passed 1 is a s t hr u h a'silt bed showing through conduit 13, jets will b'e'projecte'd by noz- 40 my p v d in el va n; F .2 is-a ertical' zles 12 across inlet openings 10. This will dissection hr u h a f m t of h ad on'an' en lodge insoluble material from the latter and in larged scale; and'Fig. 3 is a section, as seen "on the event flow of water is continued, will prevent the broken line 33 of Fig. 2. w j entrance of [slush making the head inoperative In order that the subsequent descriptionmay' be for removal ofslush. clearly understood, certain terms used are here Ranging circumferentially about the hood at a defined. The term silt is used in a sense inclusive point intermediate the top and bottom isa conof solids, such as silt, sand, dirt or'the like, ca-' duit 1,4 which is connected to a supply line 15 pable of being entrained in liquids; Slush is the leading to, a source of liquid under pressure. mixture of such silt. Basins are quiescent zones Connected to conduit 14 are nozzles 16 positioned V in abody of liquid coextensive or partiallyexten to direct fluid inwardly and downwardly in a sive therewith and may be either natural, ar spiral direction and thus cause turbulence of tificial or both. liquid in the hood. e v

Referring more particularly to Fig. 1, the bed of Below conduit 14 is another circumferentially a basin is indicated by A. A foundation of ceextending conduit 17 having nozzles or spouts 18a ment or the like is denoted by B. The foundato project water downwardly and outwardly parallel to the wall of the hood. These spouts are in registration with openings 19 in flange 6 so that jets of water may pass to theoutside of the hood at the hem of the latter.

Pipes 13, 15 and 18 are preferably separately controlled and pipe 13 may lead to only a selected number of heads 0 while the pipes 15 and 18 may be connected to all the heads or selected groups of heads as deemed advisable for the particular conditions. Assume that a layer of silt D has accumulated and it is desired to remove it. During accumulation of the silt, the hood 5 will have offered protection to the slush intake and nozzles of the head. The action is initiated by supplying water under pressure to pipes 13,. 151

and 18. The water issuing from nozzles12 will clear inlet openings 10 of an accumulated material.

under the hood in a state of turbulence. Water issuing from spouts 18a passes intothe silt outside of the hood and creates a slush. The water in pipe 13 is next shut off. This frees the inlet openings 10 for intake of slush. Pipe 8 is sub jected to a suction'pressure thereby drawing slush. into the riser 9 and carrying it away. The silt D lowers, and in the vicinity of the head slides' downwardly toward the latter.

The entire field zoned with the heads will be cleared of silt. Obviouslythe floors'of shallow basins may be sloped towards the heads to allow easier flow of silt. After removal of silt, the system is closed down and silt again accumulates.

Thehoods 5 offer protection to the nozzles andintakes'against the load of silt as well as shifting banks.

What I claim is: 1. A silt removing head mountedpermanently in the bottom of a basin comprising a hood, means open mounted permanently in the bottom of a basin, a slush conductor having an intake cham-" ber with inlet openings disposed within said hood adjacent the crown thereof; a conduit adapted to be connected to a source of liquid under pressure and having means disposed and positioned within said hood toproduce turbulence of liquid therein; and a conduit adapted'to be connected to a source of liquid under pressure and having spouts disposed to direct liquid outwardly from said hood at the hem thereof.

3. A silt removing head mounted permanently in the bottom of a basin comprising a hood, means, to support said hood in a position with its mouth open mounted permanently in the bottom offla basin; a slush conductor having an intake cham ber with inlet openings disposed within said hood adjacent the crown thereof, a conduit adapted to be connected to a source of liquid under pres sure and having nozzles disposed to project liquid across said inlet openings; a conduit adapted to be connected to a source of liquid under pressure Water jetting from nozzles .16 mixes. with; the silt, agitates the latter and keeps the liquid,

' inthe bottom of a basin comprising a hood mountand having means disposed and positioned within said hood to produce turbulence of liquid therein; and a conduit adapted to be connected to a source of liquid under pressure and having spouts disposed to direct liquid outwardly from said hood at the hem thereof.

4. A silt removing head mounted permanently in the bottom of a basin comprising a hood mounted permanently in the bottom of a basin, spaced stilts extending from the hem of said hood to support the latterand forming an annular trash rack; a slush conductor having an intake chamber with inlet openings disposed within said hood adjacent the crown thereof; and a conduit adapted to be connected to a source of liquid under pressure and having means disposed and positione'd within said hood to produce turbulence of liquid therein.

5. A silt removing head mounted permanently ed permanently in the bottom of a basin, spaced stilts extending from the hem of said hood to support the latter and-forming an annular trash rack; a slush conductor having an intake chamher with inlet openings disposed within said hood adjacent the crown thereof; a conduit adapted to be connected to'a source of liquid under pressure and having means disposed and positioned within said hood to produce turbulence of liquid therein; and a conduit adapted to be connected to a source of liquidunder pressure and having spouts disposed to direct liquid outwardly from said hood at the hem thereof. 7 I V 6. A silt removing head mounted permanently in the bottom of a basin comprising a hood mounted permanently in the bottomof a basin, spaced stilts extending from the hem of said hood to support the latter and forming an annular trash rack; a slush conductor having an intake chamber with inlet openings disposed within said hood adjacent the crown thereof, a conduit adapted to be connected to a source of liquid under pressure and having nozzles disposed to project liquid across said inlet openings; a conduit adapted to be connected to a source of liquid under pressure and having means disposed and'positioned within said hood to produce turbulence of liquid therein; and a conduit adapted to be connected to a source of liq uid under pressure and having spouts disposed to direct liquid outwardly from said hood at the hem thereof.

7. A silt removing head mounted permanently in theibottom of a basin comprising a conical hood mounted permanently in the bottom of a basin, spaced stilts extending from the hem of said hood to support the latter and forming an annular trash rack; a slush' conductor extending axially into said hood and having an intake chamber with inlet openings disposed within said hood adjacent the apex thereof, a conduit adapted to be connected to a source of liquid under pressure and having nozzles disposed to project liquid across and through said inlet openings; a conduit adapted to be connected to a source of liquid under pressure having means disposed and positioned Within said hood to direct water downwardly andinwardly toward the axis of said hood to produce turbulencev of liquid therein; and a conduit adapted to be connected to a source of liquid under pressure having spouts disposed to direct liquid parallel to the wall of said hood and outwardly from said hood at the hem thereof.

1 CHARLES B. HARP.

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