US1056780A

US1056780A - Apparatus for adding reagents to liquids or for mixing liquids.

Info

Publication number: US1056780A
Authority: US
Inventors: Martin Deacon; William Gore
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-04-30
Filing date: 1912-04-30
Publication date: 1913-03-25
Anticipated expiration: 1930-03-25

Description

M. BEACON & W. GORE. APPARATUS FOR ADDING RBAGENTEI TO LIQUIDS OR FOR MIXING LIQUIDS. APPLICATION FILED AI-II. 30, .1912. 1,056,780. Patented Mar. 25, 1913.

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COLUMBIA PLANDGRAPH 60.. WASHINGTON. D. C

M. DBAGON & W. GORE.

APPARATUS FOR ADDING-REAGENTS TO LIQUIDS OR FOR MIXING LIQUIDS. APPLICATION FILED APR.30, 1912.

1,056,780. Patented Mar.25,1913.

2 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH c0.,WAsmNuTON, D. '64

UNITED STATES PATENT OFFICE.

MARTIN BEACON AND WILLIAM some, or LoNDoN, ENGLAND.

APPARATUS FOR ADDING REAGENTSE TO LIQUIDS OR FOR MIXING LIQUIDS.

Specification or? Letters Patent.

Patented Mar. 25, 1913.

Application filed April 80;; 1912. Serial No. 694,267.

To aZ Z whom it may concern Be it known that we, Mairriiv Deacon and lViLLLiM Gone, subjects of the King of, England, and both residing at London, i11 England, have invented certain new and; for, Adding Reagents to Liquids or for Mixing Liquids, of which the following is a speci useful li'nprovement-s in Apparatus fication.

and to carry such reagent into the main stream of the liquid.

pass into the main liquid.

One of the objects of the present invention is to obviate this disadvantage by the provision of a second chamber communicating with the first chamber containing the re agent through a valve-controlled connection, the arrangement being such that the recharging of the chamber can be caused to? As;

displace liquid in the second chamber. the second chamber normally contains water or other liquid to be treated, uncharged with the reagent, the displacement of liquid from the second chamber does not cause any waste of the reagent. I

Another feature of the invention is the provision of a mixing chamber or vessel by; means of which the density of the reagent-f carrying liquid is maintained constant. As the volume of the reagent-carrying liquid added to the main liquid, is usually made proportional to the amount of liquid pass-, ing through the main, it is of importance that th strength or density of the solution containing the reagent should be maintained constant.

In the accompanying drawings which illustrate one construction of apparatus ac cording to this invention, Figure 1 is an elevation, some parts being shown in sec-. tion. Figs. 2 and 3 are sectional views on a larger scale showing one of the valves in two positions, and Fig. 4 is an elevation In apparatus of thisf kind the chamber containing the reagent has, to be recharged periodically and there is a. possibility of the new charge displacing the liquid saturated with the reagent and wast-' ing it, or else causing an undue quantity to partly in section showing another part of the apparatus which can be used in conjunction with the apparatus shown in Fig. 1.

\Vith reference first to Figs. 1, 9- and 3, th main pipe A. conveying, for example, the supply of unfiltered water to a filter is provided with a restriction in the form of a plate B having tubular openings B. These tubes B lead into other short tubes B which, in the example illustrated, are of slightly larger diameter. The direction of flow of the water in. the main A is in the direction of the arrow a in Fig. 1, and from the high pressure side of the restriction formed by the plate B and its openings, a pipe C leads to a six-way valve or cock D. This cock is also in communication with the low pressure side of the restriction by means of a pipe E. At some convenient place preferably adjacent to the restriction in the main pipe, two vertical chambers are provided one of these F, being furnished with a removable cover F and adapted to contain some reagent for example, a coagulant. The other vessel Ur which is connected to the vessel F through the six-way cock D is intended to contain only water or other liquid which is passing through the main A. By reference of Fig. 1 it will be seen that a pipe G connects the top of the vessel G to the cock D, a similar pipe F serving to connect the cock with the top of the vessel F. A pipe 11 connects the cock to the bottom of the vessel G and the lower portions of the two vessels F and G are connected by a pipe J in which is interposed a regulating valve J. The cock is shown in section in Figs. 2 and 3, Fig. 2 illustrating the position of the cock during the normal operation of the apparatus and Fig. 3 showing its position when the apparatus is being recharged. \Vhen the cock D is in the position illustrated in Fig. 2 it will be seen that the pipes F and E are placed in communication with each other, the pipes C and G being also connected.

The operation of the apparatus is then as follows :iVater or other liquid from the high pressure side of the restriction in the main pipe A passes through the pipes C and G into the top of the second chamber Gr, out at the bottom of that chamber through the pipe J and regulating valve J into the lower extremity of the chamber F whence it rises through a grid F which is used to support thereagentwhen a solid or crystalline substance is used. From the upper end of the chamber F the liquid charged with the reagent, passes through the pipes F and E to the low pressure side of the restriction in the main pipe. It will be seen that the entrance for the liquid from the pipe E in the main A is arranged so that the liquid passes into the larger tubes B and the flow of the reagent-saturated liquid is thus assisted by the passage of the unfiltered liquid through the smaller tubes B. lVhen it is desired to replenish the chamber F with the reagent the cock D is moved into the position shown in Fig. 3,

i that is to say, when the pipe F is placed in communication with the pipe H and the pipe G connected to a pipe K leading to waste. \Vhen the cock is turned into this position the cover F is removed and fresh reagent placed in the vessel F. Any solution saturated with the reagent, which may be in the vessel F, is displaced and passes through the pipes F and H into the bottom of the second chamber G. In this chainher it will displace water which will pass out through the pipes G and K to waste.

It will be seen from Fig. 1 that a second set of two chambers F" and G is provided connected to the main pipe A and to each other in a manner similar to that described with reference to the chambers F and G.

'This second set may be used alternatively with the first set or both sets may operate simultaneously, for example, one set may supply a suitable coagulant to the water and the other set may provide lime or other alkali.

If the apparatus shown in Fig. 1 be used alone, it is advisable that the liquid passing through the pipe E and carrying the reagent, should be a saturated solution of the reagent, but there are difliculties in connection with the use of a saturated solution. In the first place such a solution is liable to crystallize out and clog the small pas sages ot' the apparatus, and also in many cases the proportion of reagent required is so small that there is ditficulty in adding it in the form of a saturated solution. To overcome these difliculties it is preferred to use in conjunction with the apparatus shown in Fig. 1, the mixing and density regulat ing apparatus shown in Fig. 4. This comprises a chamber or casing L having an upper inlet L for the dense or saturated liquid and another inlet L at the bottom, for water or less dense liquid. These two inlets are controlled by a float M, preferably in the formot a light cylindrical body, which can be weighted to suit the specific gravity of the mixture which is to be used. At the top of the float M is a conical valve M working in conjunction with the inlet L, while the bottom of the float is provided with a similar valve M to control the inlet L For the sake of clearness. this apparatus isshown in Fig. a. separate from the apparatus in Fig. 1, but it is to be understood that the pipe E of Fig. 1, leading from the six-way cock D could be cut and connected to the pipe E of Fig. i, so that when the cock D is in the position illustrated in Fig. 2, the liquid saturated with the reagent coming from the vessel F through the pipes F and E, would flow through the pipe E into the regulating vessel L by way of the inlet L. The second inlet L of the regulator L is intended to be connected as shown in Fig. 4 to the main A on the high pressure side of the restriction. Thus the inlet L may be con nected to the pipe C. The vessel L is provided with an outlet L conveniently midway between the inlets L and L The mixture flowing from this outlet passes through a pipe E and enters the main A on the low pressure side of the restriction. Thus the pipe E may be regarded as forming the lower end of the pipe E of Fig. 1. It will be understood that it the weight of the float M is properly adjusted the density of the liquid passing out of the vessel L, by way ot-the outlet L can be kept at any predetermined value. It the mixture in the chamber L is too dense the float will rise and will tend to shut off the supply of dense liquid from the inlet L and to increase the flow of the water or less dense liquid coming in at the inlet L If, on the other hand, the solution is too weak the float M will sink, opening the inlet L for the dense liquid and tending to close the inlet for the water. In order that, when the float M sinks, its entire weight shall not be taken by the pointed valve M itis preferred to employ a construction such as that illustrated in which, after the inlet L has been closed, the weight of the cylinder is taken upon a screwed cap N or other rigid shoulder with which the nut or collar N on the float M, comes into contact. One or other of the inlets L, L may be adjustable in order to vary the travel of the float.

It is preferred to employ strainers at each of the inlets and the outlet of the vessel L, for the quantity of reagent required is often so small that very minute orifices are necessary and consequently it is well to avoid any risk of clogging. Such strainers are shown at O in Fig. 4 and cooks may be provided on each side of each strainer, so that any strainer may be removed and cleaned without wasting the liquid.

The cock shown at P in Fig. 4; is intended to provide a graduated outlet for the mixture passing from the vessel L. The cock may conveniently comprise a plug tap having a series of circular orifices so arranged that any one of them can be brought into line with a straight-through passage. Any well known arrangement of this kind may be employed and obviously it may be inserted at the point where the liquid leaves the main A, that is in the main pipe C, instead of at the point where the liquid returns to the main.

, T he float itself may be made of some material which is not acted upon by the liquid under treatment, or may be coated with some such material. Hard rubberor vulcanite may be used for the valves and their seatings.

hatwe claim as our invention and desire to secure by Letters Patent is 1. In apparatus for adding reagents to liquids or mixing liquids the combination of a chamber adapted to contain the reagent, a second chamber adapted to contain the liquid under treatment, a main for the liquid having a restriction to give a difference of head, connections between the chambers and the main and a cock controlling the connections, such cock and the connections being so disposed that the recharging of the first chamber will only displace liquid uncharged with the reagent in the second chamber.

2. In apparatus for adding reagents to liquids the combination of a chamber adapted to contain the reagent, a second chamber adapted to contain the liquid under treatment, a main for the liquid having a restriction to give a difference of head, connections between the two chambers and be tween the chambers and the high and low pressure sides of the restriction in the main and a cock controlling such connections, said cock and connections being so disposed and arranged that in one position of the cook the liquid to be treated passes from the high pressure side of the restriction to the second chamber, the liquid displaced from the second chamber entering the first chamber and displacing liquid charged with reagent and causing it to pass to the low pressure side of the restriction, while in the other position of the cock the reagent can be added to the first chamber and displaces liquid uncharged with the reagent from the second chamber.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

MARTIN DEAOON. WILLIAM GORE.

Vitnesses DAVID HALTON THOMSON, HENRY EDWARD THOMPSON ELLIS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.