US366171A

US366171A - hyatt

Info

Publication number: US366171A
Authority: US
Publication date: 1887-07-05
Anticipated expiration: 1904-07-05

Description

Patented July 5, 1887..

J. W. HYATT.

APPARATUS FOR PURIFYING WATER.

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UNITED STATES PATENT Urrren.

JOHN w. l-IYATT, or NEWARK, new JERSEY.

APPARATUS FOR PURIFYING WATER.

SPECIFICATION forming part of Letters Patent No. 366,171, dated July 5, 1887.

Application filed Mny27, 1886. Renewed April 19, 1887. Serial No. 235,431. No model.)

To all whom it may concern:

Be it known that I, JOHN WV. HYATT', a citi zen of the United States, residing in Newark, Essex count-y, New Jersey, have invented certain new and useful Improvements in Apparatus for Feeding Coagulaut, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

The object of this invention is to supply a regulated quantity of coagulant to impure water in a closed conduit under pressure be fore filtration, to produce a precipitate therein for the removal of the impurities.

Heretofore I have patented a mechanism comprising a motor actuated by the entire current of the impure water,and a coagulantfeeding apparatus operated by such motor, as in United States Patent No. 293,749; but in the construct-ion shown in said patent the entire unbalanced pressure of the water in the main conduit was exerted within the coagulant-receptacle, and the energy required to force the coagulating liquid therefrom was correspondingly great.

The objectof my presentinvention is to provide a balance within the coagulant-receptacle for .such pressure, and to thereby diminish the energy required to force the fluid therefrom.

In the annexed drawings I have shown two constructions for effecting this object, the means for balancing the'pressure being the same in both, and consisting in supplying the coagula11t-feeder with water from the main conduit-pipe under the same pressure as the fluid to which the coagulant is delivered. The effect of such construction is to entirely rcmove the resistance to the movement of the coagulantfeeder, and confines the operation of the motor wholly to the function of a regulator for determining the rate at which the coagulant is delivered. I

Figure 1 represents a filtering-plant provided with a rotary motor actuating a rotary pump to force a regulated quantity of water through an alumtank, and thence into the main conduit, impregnated with the desired proportion of coagulant. Fig. 2 represents a filtering-plant provided with a rotary motor for actuating a piston feeding device analogous to that shown in my United States Patent No. 293,749; and Fig. 3 represents the construction of such piston feeding mechanism in section on line was in Fig. 2.

A is the filter; B, the main conduit leading the impure water thereto and passing on its way through a rotary motor, 0. After operating the motor, the main current ofthe water passes from the conduit 13 directly to the filter.

In Fig. 1 D is the rotary pump, actuated by the motor O and supplied with fluid by a branch, I), from the conduit B. The pump delivers the water in a regulated quantity by pipe c to the alunrtank E, from whence it passes to the conduit Bthrough the pipe e, charged with the desired proportion of coagulant,which is thereby mingled with the impure water before its entrance into the filter. The so-called alum tank is not shown in detail herein, but is constructed to expose a fixed area of the alum, lime, or other coagulant material to the current of water passing through the tank, so that a fixed amount of the same will be dissolved by the water and delivered therewith into the fluid in the main conduit.

A is the inlet to the filter, and A the outlet for the filtered water, while a and a are overflow-pipes used in.washing the filter.

In Figs. 2 and 3 G- is a hollow cylinder containing a piston, g, for feeding a previously prepared solution of the coagulant, the piston being moved within the cylinder by a screw, h, which is provided outside of the cylinderhea'd with a ratohet whcel, I, actuated by the motor 0. A pawl-arm, J, is pivoted upon the screwshaft adjacent to the wheel I, and is connected by a rod, Z, with an adjustable crank, m, rotated by the motor. A pawl, 0, operated by the arm J, serves to rotate the ratchet-wheel step by step when the arm J is vibrated, and the rotation of the screw thus produced operates to move the piston longitudinally in the cylinder. The piston is provided upon one side with a packing, p, and the cylinder upon that side of the'piston is charged with a solution of the required coagulant, which is forced from the cylinder by the movement of the piston through an outlet, 1', and pipe 1', and delivered thereby to the conduit B.

To balance the resistance of the pressure in actuating mechanism is correspondingly reduced. The cylinder may be recharged inany convenient manneras through a piper, connected with the outlet rthe piston being retracted during such operation, which maybe effected by lifting the pawl 0 and turning the screw by the hand-crank t.

.The various pipes and connections shown herein may in practice require cocks at various points to operate them conveniently but the same are not shown herein, as they form no part of my invention.

Having shown the means for balancing the pressure in two different kinds of feeding devices by connecting the opposite sides of the fluid-moving agent with the main. conduitpipe, it will be readily understood how such connections may be applied to other feeding devices of different construction.

In the drawings the fluid-connections which supply a portion of the fluid under pressure from the main conduit to the inlet and outlet of the coagulant-feeder are connected, respectively, with the inlet and outlet conduit-pipes of the motor G. As the internal resistance of the motor 0 must slightly diminish the pressure in its outlet-pipe B, it isobvious that the pressure supplied from the inlet of the motor 13 is greater than that against which the feeder operates, and must operate to assist the movements of the fluid-moving agent in the coagulant-feeder, whether the same be a moving piston, as in Fig. 3, or a rotary pumping device, as at D in Fig. 1. Such an arrangement of the pipes, therefore, limits the function of the motor G or O to a merely regulating device, which determines and controls the movements of the feeding device at the required rate.

I am aware that it is common to connect both the top and bottom of an oil-cup or other feeding-receptacle with a volume of liquid under pressure that the contents of the feedingreceptacle may be discharged by gravity into such liquid under pressure, and I disclaim such a construction, as my invention consists in applying the fluid-pressure against which the coagulant is to be fed to the opposite sides of the feeding-piston which discharges the coagulant or precipitant from the feeding-vessel. Such piston may be of any desired form or construction-as, for instance, the reciprocating plug 9, (shown in Fig. 3 of my drawings,) on the fluid-moving agent in any form of rotary pump or other feeding device, operated to propel the coagulant into the unpurified water. I do not, therefore, limit myself to any particular construction for the fluid-moving mechanism, provided the resistance to its movement is balanced by the means herein described.

What I claim herein, and desire to secure by Letters Patent, is

1. In an apparatus for purifying water, the combination, with a feeder supplying a coagulant or precipitant to the impure water under pressure, of separate pipes conducting a portion of the fluid under pressure to the opposite sides of the fluid-moving piston to diminish the resistance to its motion, substantially as herein set forth.

2. In an apparatus for purifying water, the combination, with the coagulant-feeder and a filter-conduit, of a motor actuated by the fluid in the filter-conduit, and separate pipes con ducting a portion of the fluid under pressure in such conduit separately to the inlet and outlet of the coagulant-feeder, as and for the purpose set forth.

3. In an apparatus for purifying water, the combination, with the coagulant-feeder, of a motor actuated by the fluid in the main conduit, and separate fluid-connections uniting the inlet and the outlet of the feeder, respectively, with the inlet and outlet conduit-pipes of the motor, substantially as herein set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses' v JOHN IV. HYATT. Witnesses:

'Inos. S. CRANE, Cats. 0. MCBRIDE.