US1950983A - Strainer - Google Patents

Description

March 13, v 1934.

F. HENNEBOHLE STRAINER March 13, 1934.

F. HENNEBHLE STRAINER Filed 4, 1930 2 SheetsSheet 2.

@MMI/QAM Patented Mar. 13, 1934 STRAINER Frank Hennebhle, Chicago, Ill.

Application August 4, 1930, Serial No. 472,878

4 Claims.

This invention relates 4to means for straining water to prevent fish or miscellaneous floating rubbish from being carried to the point where the `water is to be used.

One ef the objects of the invention is to provide `a `construct-ion of such character as to af- :tord a relatively large straining area.

Another object of the invention is to prevent rubbish from clogging the strainer.

A further object is to provide simple means for quickly vand .easily removing an accumulation 5of rubbish.

In the accompanying drawings:

Figure 1 is a longitudinal sectional view or" a strainer ,embodying the features of my invention, the View bei-ng taken in the plane of line l-l of Fig. 2.

Fig. 2 is a horizontal sectional view taken in the plane of line 2--2 of Fig. 1, with the screens omitted.

Fig. .3 is an end View, with portions broken away, -in the plane of line 3 3 of Fig. 1.

Fig. `4 is a section on line 4-4 of Fig. 3.

The term rubbish will be herein used to denote any floating material which may be carried along by the Water and which should be removed bythe strainer.

The embodiment herein shown of the invention comprises a body 1 having an inlet 2 and an outlet 3. So far as this invention is concerned, it is immaterial Whether the pump which induces flow is connected to the inlet 2 or the outlet 3. The interior of the body is so arranged as to provide two passages leading from the inj let to the outlet, only one of which passages is in use at a given time. A central bore 4 extends directly from the inlet 2 to the outlet 3. At opposite sides of the bore 4, the body 1 is divided by partitions 5 into chambers 6 and 7. Each chamber 6 has a clean-out opening 6a near its lower end, said opening being normally closed by means of a screw plug 6b. The chambers 6 communicate with the inlet 2 by means of openings 8, while the chambers 7 are connected to the outlet 3 through openings 9. A butterfly valve is arranged to be swung into position to shut oit either of the openings 8 from communication with the inlet 2, and a similar butterfly valve l1 serves to control communication between the openings 9 and the outlet 3. The valves 10 and 11 are fixed upon shafts 12 and 13, respectively, said valves being arranged to be operated by any suitable means, as, -lor example, Weighted hand levers 14. The Weights 142 normally hold the valves in closed position.

(Cl. 21o-116,8)

Parallel with the partitions 5 .are partitions 15 which serve to provide Within the body 1 rubbishcollecting `chambers 16 which do not constitute a part of the 4passagevvays leading from the inlet to the outlet and thus form still Water chambers. In the partitions 5 are openings 17 which .are alined with openings 18 in the partitions 15. ,In each pair ,of openings 17 and 18 is secured a cylindrical screen 19 of perforated metal or ,any other suitable material. The screens 19 maybe removably secured in place by any suitable means, as, for example, a retaining ring 20 which .is T-shape in cross-section, said ring fitting around the upper end of the screen Within ,the opening 1S and being held in place by means ,of -a screw 21. It will .be understood that the number of screens may be greater or less than that herein shown.

As is apparent from Figs. 1 and v3, the lchamber 16 for each half of the valve is a single, large chamber which extends over and is common to all of the screens. Each chamber 16 extends from the central bore 4 to the outer Wall of the valve and thus has a horizontal cross-sectional area substantially larger than the combined areas of the top of the screens. In fact, the chamber in Aeach half of the valve extends radially .outwardly beyond the edges of the end of each screen, forming a flange about the end (see Fig. 1) which aids in making the chamber a still Water chamber and aids in retaining the floating rubbish in the chamber.

1n the top wall 22 of the chamber' 16 are formed hand holes 23 which are alined with the screens 19 and are arranged to be closed by any suitable means, as, for example, hand hole covers 24 of ordinary construction. Clean-out openings 25 in the outer Walls of the chamber 16 are normally closed by means of screw plugs 26, but it is contemplated by the manufacturer of the strainer that the purchaser will connect a valved drain pipe to each oi the openings 25.

In use, assuming that the butterfly valves occupy the position shown in Fig. 1, Water flows from the inlet 2 through the right-hand chamber 6 and through the screens 19 into the chamber 7 and thence through the opening 9 to the outlet 3. Rubbish which may be carried by the water will be intercepted by the screens 19 and will rise into the chamber 16, and hence a relatively When in the course of time it becomes desirable to clean the screens, the butterfly valves 10 and 11 are reversed in position so as to direct the flow of water through the left-hand side of the body 1. The hand holes 23 may then be opened in order to give access to the screens 19 in the right-hand side of the body 1. It will be seen that the screens may be removed through the openings 23, if desired, and that any rubbish which may fall into the chamber 6 when the flow of water through said chamber is shut oi may be removed through the clean-out opening 6a. After opening the clean-out 25, the lower valve may be opened to admit water to the chamber 16 for the purpose of flushing out the screens and said chamber.

It will be evident that the strainer herein disclosed is of large capacity, as it provides a number of screens 19, each of the screens being cornparatively long, and that the chambers 16 above the screens provide spaces to receive rubbish so that such rubbish shall not accumulate within the screens and thus reduce the eiciency of the strainer. Because of the chamber 16 with its cleanout opening 25, it is possible tooperate the strainer for a relatively long time without reduction of eiciency, but when it becomes desirable to clean the screens 19 it is a simple matter to place the other side of the strainer in use, thus avoiding any interruption of service.

The butterfly valves 10 and 11 for directing the now of the water may be easily and conveniently operated by means of the levers 14. They both lie at the side opposite to that through which water is iiowing.

I claim as my invention:

1; A strainer comprising a body having an inlet, an outlet and two passages each extending from the inlet to the outlet, said passages being formed by means of a central bore extending directly from inlet to outlet, partitions at opposite sides of the bore dividing the space within the body at each side of the bore into two chambers, there being openings connecting said chambers to the central bore, two butterfly valves controlling said openings, each of said partitions having an opening therein, a rubbish-receiving chamber having an opening alined with the last mentioned opening, a cylindrical screen having its ends in communication with the two last men'- tioned openings and extending through one of said rst mentioned chambers, means for cleaning out the other of said first-mentioned chambers, and means for cleaning out the rubbish-receiving chamber.

2. A strainer comprising a body having an inlet and an outlet, a vertically disposed open-ended tubular screen interposed between said inlet and outlet, the open lower end of said screen being in communication with the inlet, communication with the outlet being through the side walls of the screen, and a rubbish-receiving chamber having a horizontal cross-sectional area substantially greater than the end of said screen located above and communicating with the upper end of said screen to form a still-water chamber for receiving any floating rubbish intercepted by said screen.

3. A strainer comprising a body having an inlet and an outlet, a vertically disposed open-ended tubular screen interposed between said inlet and outlet, the open lower end of said screen being in communication with the inlet, communication with the outlet being through the side walls of the screen, and a chamber located above and communicating with the upper end of said screen, said chamber extending outwardly beyond the edges of the end of the screen to form a still-water chamber of an area substantially greater than the end of the screen ior receiving any floating rubbish intercepted by said screen and having a clean-out opening for the discharge of the rubbish trapped in the chamber.

4. A strainer comprising a body having an inlet and an outlet, a plurality of upright, open-ended tubular screens interposed between said inlet and outlet, the open lower ends of said screens being in communication with the inlet, communication with the outlet being through the side walls of said screens, and a single chamber located above and communicating with the open upper ends of said screens for the reception of lioating rubbish intercepted by said screens, said chamber having a clean-out opening for the removal of the rubbish.

FRANK HENNEBHLE.

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