US2300909A - Reciprocating shower - Google Patents

Description

Nov. 3, 1942.

A. E. BROUGHTON REGIPROCATING SHOWER Original Filed April 14, 1959 3 Sheets-Sheet 1 Inventor izl 1942- AQE. BROUGHTON R ECIPROCATING SHOWER Original Filed April 14, 1939 3 Sheets-Sheet 2 .ZIZ/WW A Ziarney;

NOV. 3, 1942 BRQUGHTON 2,300,909

- -RECIPR(I)CATING SHOWER Original Filed April 14, 1939 3 Sheet s-Sheet 3 a q 1/ R w 3 Aiiorneys Patented Nov. 3, 1942 UNITED STATES PATENT ()FFICE I RECIPROCATING SHOWER 3 Claims.

This invention relates to showers for paper making .machines and other machines where showers are required.

It is one of the objects of the present invention to provide a novel and improved shower for paper making machines and the like which is compact, light in weight, inexpensive and efficient and can be installed readily on such machines.

Another object is to providea novel and improved reciprocating shower which includes'no hose or flexible conduits for supplying the fluid to the shower head.

Another important object of the invention is to provide a reciprocating shower which can be substituted for existing stationary showers on paper making machines and willgreatly economize on the quantity of water employed and will be highly efiicient in action.

A more specific object of'the invention is to provide a shower having a rigid and stationary water supply pipe, a sleeve-like spray head slidably mounted on the supply pipe and packed relative thereto, the stationary supply pipe com-.

municating with the sleeve-like spray head and means for reciprocating the spray head on the supply pipe.

The present application is a division of my United States application for patent entitled Reciprocating shower, Serial No. 267,772, filed April 14, 1939.

The objects and advantages of the invention will more fully appear from the following description made in connection with the accompanying-drawings, wherein like reference characters refer to the same or similar parts throughout the various views, and in which,

Fig. 1 is a vertical longitudinal section taken through the left hand portion of a shower embodying the invention and the left hand portion of a rotary cylindrical screen in conjunction with wh ch the shower is used;

Fig. 2 is a similar section through the right hand portion of the shower and screen:

Fig. 3 is a view in side elevation of the right hand end portion of the shower shown in Figs. 1 and 2;

Fig. 4 is a view in front elevation looking toward the left hand end of the structure shown in Fig. 1;

Fig. 5 is a vertical section taken on the lin 5-5 of Fig.1 as indicated by the arrows;

Fig. 6 is a view in side elevation showing a portion of the shower illustrated in Fig. 6 and part of the vat, the shower head being turned upwardly slightly from the position shown in Fig. 6 to show the spray nozzles; and

Fig. 8 is a view similar to Fig. 7 but showing the right hand end portion of the shower and vat illustrated in Fig, 6.

Referring first to the embodiment of the invention illustrated in Figs. 1, 2, 3, 4 and 5, portions of a rotary screen [0 of the type commonly employed in paper making machines for removing the lumps and clotted masses from the watered pulp prior to its passage to the 'Fourdrinier wire, are illustrated. This screen I0 includes a closed end Illa which is fixed to the shaft (not illustrated) that rotates the screen and it further includes a ring-like head l0b having an opening Hie therein and forming an open end for the screen. The foraminous screen proper which acts as a strainer and is designated by the numeral 10c is cylindrical and extends between the closed end Mia and the head l0b. This screen proper lllc is provided with a multiplicity of very fine slots l0b running circumferentially of the screen and spaced longitudinally of the screen from each other, these slots being of rather short length and being interrupted by solid portions of the screen. In the drawings in Figs. 1 and 2 the width of the slots is generally exaggerated as is also the spacing between the slots. The screen l0 works within a trough, not illustrated, and the watered pulp is fed onto the exterior of the screen to pass through the slots I0d into the interior thereof and the screen acts as a strainer to prevent the passage of lumps, clots, etc., through the screen.

In connection with such a screen, as screen I0 illustrated, it is now the common paper mill practice to utilize a stationary shower which runs into the screen through the open end thereof and sprays onto the screen from the inner side thereof to remove any material that may clog the slots Hid oi. the screen. With such stationary showers it is the common practice to employ from between 3,000 to 6,000 gallons of water per hour to clean the screen.

The shower of the present invention is used to replace the old type of stationary shower and to reduce the water consumption of from 3,000 to 5,000 gallons per hour to in the neighborhood of 100 gallons per hour while producing comparslightlydifierent embodiment of the invention able or better cleaning results.

lustrated includes a bow ll of angle bar construction supported in any suitable manner as from the bottom of the trough within which the screen It works, and a cross bar 2 which runs across the bow H in downwardly spaced relation from the top thereof. Secured as by bolts l3 and H to the bow II and cross bar I2 is a mounting bracket I! for my shower. 7 This mounting bracket l has two horizontal openings therethrough, in the upper one of which a water supply pipe I8 is mounted. As shown, this supply pipe l8 includes a short horizontal section |8a mounted in the bracket l5 and a longer horizontal section |8b closed at its end remote from the bracket II by a plug The supply pipe l8 runs into the screen |ll through the open end of the same and extends to a point close to the closed end Illa of the screen. The supply pipe is located at a level spaced from but quite close to the top of the screen. A water feed pipe l8, connecting with any suitable source of water supply, connects to a strainer l8 and this strainer in turn connects with an elbow 20 attached to the outer end of the supply pipe It. A spray head 2| is mounted for sliding reciprocating movement on the section |8b of the supply pipe l8. This spray head consists of a sleevelike pipe carrying a plurality of spaced spray nozzles 22 which are directed upwardly toward the top of the screen Ill. The two ends of the spray head 2| are closed by ring-like plugs 23 carrying packing 24 so that while reciprocation of the spray head 2| is permitted relative to the supply pipe I, water tight connections are made between the ends of the spray head and the section |3b of the supply pipe at all times. Fluid communication between the supply pipe l8 and the spray head 2| is afforded by means of openings 25 in the section lib of the supply pipe, these openings, of course, being located between the two plugs 23 within the limits of reciprocation of the spray head 2|. In order to permit spraying of the extreme right hand end portion of the screen and still to permit the right hand end of the supply pipe It to be spaced somewhat to the left of the closed end Illa of the screen, an auxiliary pipe 28 carrying spray nozzles 21 is connected to the right hand end portion of the spray head 2| to extend beyond the right hand plug 23 of the spray head.-

The supporting bracket l5 carries in the lower opening thereof a supporting tube 28. Thi tube is preferably made in two sections 28a and 28b and the inner section extends into the screen I. and carries at its inner end a securing bracket 28 which is attached to the inner end of the supply pipe I 6 as by means of a pin 30. The supporting bracket l5 and tube 28 thus form the sole support for the supply pipe l6 and the spray head 2| and, of course, the bracket I5 is located at one end of the screen |0 so that while the supply pipe and spray head are very strongly supported, the supporting structure does not interfere with the movement of the screen Ill and no alterations must be made in the screen to install the present shower.

Carried by the outer end of the tube 28 is a fluid pressure motor 3| of the type shown and described in my pending application for patent entitled Reciprocating mechanism for paper making machines," Serial No. 159,305, filed Auggust 16, 1937. This fluid pressure motor includes a piston 3|a working within a cylinder 3") and the piston is reciprocated in the cylinder preferably by air pressure. Inasmuch as any small compact motor .could be substituted for the motor 3| to cause reciprocation of the parts, further description of the motor 3| is thought unnecessary here.. The piston 3|a is connected to a piston rod 32 which runs through apacking gland 33 in the end of the motor 3| connected to the tube 28. The free end of the pistonrod 32 is connected by a universal joint 34 to a rod 35 working within the tube 28 and mounted for reciprocation therein on a ring bearing 38 carried by the tube 28. The section 28b of the tube 28 is provided at its upper part near its inner end with a slot 31 of a length slightly greater than the length of travel of the piston 3|a and piston rod 32. Secured to the inner end of the spray head 2| is an arm 28 which projects downwardly from the spray head through the slot 31 into the tube 28 and is connected to the inner end of the rod 35. With this construction it will be seen that as the motor 3| reciprocates the piston rod 32 the rod 35 will be similarly reciprocated and this rod being connected to the spray head 2| through the arm 38, the spray head will be reciprocated back and forth on the rigid supply tub Hi.

When a shower is in operation water furnished by the pipe l8 will run into the supply pipe l8 and thence through the opening 25 into the sleeve-like spray head 2| to be ejected from the spray nozzles 22 in fine needle-like sprays which strike the inner surface of the screen Ill. The reciprocation of the spray head 2| will cause the same to move longitudinally of the axis of rotation of the screen Ill and ccordingly the spray jets will move transversely o the screen slots ||Ib while the screen is being rotated. These spray jets due to the reciprocation of the spray head, will strike the slots of the screen at varying angles, and will efllciently remove any clots or other obstructions in the slots lob. By reason of the fact that the spray head is under reciprocation at all times, rather than stationary, but a small quantity of water is required to keep the screen clean in comparison to the large quantity of water that has customarily been used for the same purpose in connection with the usual stationary showers.

Referring now to the form of the invention shown in Figs. 6, 7 and 8, a shower is illustrated which may be used for cleaning a cylinder mold. A vat is designated by the numeral 39 and working in this vat is a cylinder 48 over which the felt 4| travels. An upper cylinder 42 is also shown. A pair of mounting brackets 43 are secured to two sides of the vat 39 at opposite points and these brackets carry a rigid water supply pipe 44 to which water is supplied from a, pipe 45 and a strainer 46. The right end of the supply pipe 44, as viewed, is closed by plug 41. A spray head 48 is mounted for reciprocatory movement on the supply pipe 44 and this spray head consists of a sleeve carrying a number of spray nozzles 49, the sleeve being closed at its ends of ring-like plugs 58 carrying packing 5|. A tube 52 is also carried by the two brackets 43 to extend across the vat 39 and the left hand portion of this tube, as shown, forms the cylinder for a reciprocating motor 53 of the same general type as that previously referred to, but having a, considerably longer throw. This motor includes a piston 53a to which a piston rod 54 is connected. This piston rod 54 in turn is connected to a connecting rod 55 which extends into the right hand section of the tube 52 and has attached to its right end an arm 56 projecting through a slot 51 in the tube 52 and connected to the right end of the spray head 48. It will be seen that the structure shown in Figs. 6, 7 and 8 is very similar to the structure shown in Figs. 1 to 4 except that -the shower shown in Figs. 6, 7 and 8 is supported at both ends while the shower shown in Figs. 1 to is supported merely at one end.

It will be seen that a highly eflicient reciprocating shower has been provided to operate for the purposes intended.

It will, of course, be understood that various changes may be made in the form, details, arrangement and proportions of the various parts without departure from the scope of the invention which generally stated consists in the matter shown and described and set forth in the appended claims.

What is claimed is:

1. A shower for paper making machines and the like comprising a supporting bracket, a rigid water supply pipe carried by said bracket and projecting inwardly therefrom, means for supplying water to said supply pipe, a sleeve forming a spray head surrounding a portion of said supply pipe and slidable thereon, packing between the ends of said sleeve and said supply pipe, spray nozzles carried by said sleeve, said supply pipehaving an opening therein located between the packing at the two ends of said sleeve for supplying water to said sleeve, a supporting member attached to said bracket and running inwardly therefrom and connected to the inner end of said supply pipe, a connecting rod attached to said sleeve and means carried by said bracket for imparting a reciprocating movement to said connecting rod, said bracket forming the sole support for all other parts of the shower.

2. A shower for paper making machines and the like comprising a supporting bracket, a rigid water supply pipe carried by said bracket and projecting inwardly therefrom, means for supplying water to said supply pipe, a sleeve forming a spray head surrounding a portion of said supply pipe, packing between the ends of said sleeve and said supply pipe, said sleeve having spray outlets, said supply pipe having an opening there-. in located between the packingat the two ends of said sleeve for supplying water to said sleeve, a tube running parallel to said supply pipe adjacent thereto, said tube having a longitudinal slot therein, a connecting rod working within saidtube, an arm secured to said rod projecting through said slot and connected to said sleeve, means for reciprocating said rod in said tube and means rigidly connecting said supply pipe and said tube at their ends remote from said bracket.

3. A shower for paper making machines and the like comprising a supporting bracket, a rigid water supply pipe carried by said bracket and projecting inwardly therefrom, means for supplying water to said supply pipe, a sleeve forming a spray head surrounding a portion of said supply pipe and slidable thereon, packing between the ends of said sleeve and said supply pipe, said sleeve having spray apertures therein, said supply pipe having an opening therein located between the packing between the two ends of said sleeve for supplying water to the sleeve, a supply pipe supporting 'tube attached to said bracket and running inwardly therefrom parallel to said water supply pipe and connected to said supply pipe at its end remote from said bracket, a connecting rod working within said tube, said tube having a longitudinal slot cut therein, an arm secured to said rod running through said slot and connected to said sleeve and means carried by said bracket for reciprocating said rod.

ARTHUR E. BROUGHTON.

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