US1999881A

US1999881A - Proportioning apparatus

Info

Publication number: US1999881A
Application number: US662847A
Authority: US
Inventors: Lowe Rudy
Original assignee: Proportioneers Inc
Current assignee: Proportioneers Inc
Priority date: 1933-03-25
Filing date: 1933-03-25
Publication date: 1935-04-30
Anticipated expiration: 1952-04-30

Description

April so, 1935. R LOWE 1,999,881

'PROPORTIONING APPARATUS Filed March 25, 1953 9 2 Sheets-Sheet 1 lnz/nzor Rudy Lowe.

April 30,1935. R. LOWE PROPORTIONING APPARATUS 9 Filed March 25, 1953 2 Sheets-Sheet 2 lnvenz'or' Rudy e 5?.

Patented Apr. 30, 1935 UNITED STATES rnoroarroma APPARATUS Rudy Lowe, Chicago, Ill.,

tioneers, Inc., Providence,

of Rhode Island assignor to Propor- R. I., a corporation Application March 25, 1933, Serial No. 662,841

20 Claims.

The invention relates generally to proportioning apparatus and more particularly to such apconduit of flowing water or fluid flowing through water or other such conduits.

An important object of the present invention is to provide a new and improvedapparatus for treating fluid into a flowing stream of water or other fluid in a predetermined proportion to the quantity of flowing water.

In the use of, apparatus of this character in the fleld many variable factors must be overcome.

mined relation to the quantity of tile so that the'suction stroke of the feeding apparatus must be relatively slow. In other cases the viscosity of the treating fluid may be such movements of the pump to be The pressure of the fluid operating the proportioning apparatus also varies on difierent installations of the apparatus and this fact makes it necessary to provide many adjustmoved through the supply system.

In view of these difliculties which must be met eration of the valve.

Another object of the invention .is to; provide proportioning apparatus of this character em- Odying means of a simple character whereby the lap and lead of the overcome knocking of the reciprocating parts.

Another object is to provide apparatus of this character arranged in a new and improved manfeeding a reagent or other.

A impulse motor I ner to produce a compact and unitary device adapted to be easily mounted. I

Other objects and advantages will become apparent from the following description taken in connection with the accompanying drawings which illustrate the preferred embodiment of the invention and in which:

Fig. 1 is a diagrammatic view of a proportion ing apparatus embodying the features of the invention, the apparatus being shown as embodied in a practical installation.

Fig. 2 is a longitudinal sectional viewof the proportioning device;

Fig. 3 is a side elevational view of the apparatus shown in Fig. 2, a portion of the gear box shown in vertical section.

In form herein shown the invention is embodied in a proportioning unit Ill, adapted for injecting treating fluid from a supply tank I I into the water or otherfluid flowing through a conduit I2. The proportioning apparatus may, as in the present instance, be actuated in direct proportion to the rate 'of flow of fluid through the conduit I2 by means of a meter the conduit I2. 'housingfld upon portioning unit The treating The meter I3 has an upstanding the upper end of which the pro- I II is mounted and supported. unit I0 consists generally of an 5 supported by means of a yoke IS in spaced alined relation to a reciprocatory pump II. At one side of the motor I5 a reciprocatory valve I8 is mounted to control the motor, and the valve is actuated by the mechanism housed within a gear box I9 which is connected tov the yoke I6 and secured on top of the meter housing I4. In the preferred embodiment the pump and motor are arranged in horizontal relation since by this arrangement any leakage of corrosive reagent is drained away from the motor I5 and valve I8 so as to avoid damage thereto;

Considering generally the operation of the device, the mechanism within the gear box IE is operated by the meter I3 to reciprocate the valve I8 and the valve; in its movements, controls the flow of pressure fluid, preferably taken by means of a pipe 20 from conduit I2. The motor I5 thereby causes periodic actuation of the reciprocating pump II, the suction stroke of which serves to draw reagent from tank II through pipe 2| and a one way valve or stop-cock22 while the exhaust stroke serves to force the reagent through a one way valve or stop-cock 23 and a pipe 24 into the main conduit I 2. I

In the form illustrated the yoke I6 consists of a side wall I 65 secured by bolts 25 to one side wall I3 interposed in 2 l5 of the gear box, and an integral trough shaped bottom wall 15?, the side and bottom walls l5 and I5, being joined by end walls I5 On the opposite end walls l, the motor l5 and the pump H are secured, the motor l5 consisting of a cylinder 25 within which a piston 21 is reciprocable. The-pump |1 comprises a cylinder 25 secured by bolts 25 to theother end wall |5 and having a piston 50 reciprocable therein.

Preferably the motor and pump cylinders are alined and are operatively associated by a'piston rod 5|. Such associationis, in the present instance, arranged to provide for adjustment of the axial distance between two pistons, thereby enabling the user to adjust the strokeeof the pump H. In such adjustment a constant clearance volume is maintained in the pump whereby to adapt the device for lifting volatile reagents from below 1 the level of the pump.

' the rod 5| serves to lock the 4| about the piston chamber 45 of the control valve To this end the pump piston 35 is of tubular form, having its inner end closed as at 55 and its open end extending outwardly into the space between the two cylinders to receive the screw threaded end of the piston rod 3|; The connection between the rod 3| and the piston 55 is effected by a nut 32 which is threaded on the rod 5| and has an integral bushing 32" extending into and fixed to the piston 35. A second nut 55 on pistons in the desired adjusted relation.

Between the end walls |5= 6f the yoke l5 a scale 35 is mounted so as to be protected by the end walls l5 and to extend longitudinally parallel to the axis of the piston rod 5|. The scale is utilized to indicate the position of the adjustment of the adjustable connection between the pistons 21 and 35, and to facilitate such indication an arm 35 is slidably mounted on the scale 55 so that the arm extends toward the piston rod 5|. with this construction the pump piston 55 is completely withdrawn and by matching the arm 55 with the outer end of the piston 5|! the length of the piston stroke is indicated on the scale 55. It will be noted that about the inner end of the piston 21 of the pump cylinder, a packing gland 31 is provided, the gland being adapted to be tightened by means of the bolts 25 and their associated nuts 25*. At the other or closed end of the pump cylinder 25 a test cook 55 is provided together with internally threaded intake and

passage ports

55 and 45 respectively. The motor cylinder 25 is also provided with a gland rod 5|, bolts 42 being provided for tightening the gl nd 4|. g

The motor cylinder 25 has pressure fluid ports 45 at its opposite ends which communicate with similar ports 44 opening into the side of a valve l5. The valve chamber 45' is preferably cylindrical in form, and has a spool type of valve member 45 slidable, longitudinally therein. The valvemember 45 has four longitudinally spaced annular rings 41 formed thereon so as to provide three spaced annular grooves 45 through which pressure fluid may pass to andfrom the ports 44. The pressure fluid is conducted from the supply P p 25 teen annular groove 45 formed in between the two ports 44. Similar exhaust passages are formed by annular grooves in the valve casing 45' between the ports 44 and the ends of the valve casing. Thus movement of the valve as shown in Pig.

exhaust passages 55, while the other one of the able gear train which is circular and on a vertical shaft 55 carried 55. Thus by rotation the valve casing 45* ports 44 communicate through another valve. groove 48 with the pressure fluid supply port 45. It will be noted that the end areas of the various rings 41 are balanced so that slight force is required to'actuate the valve member 45, and to prevent building up of pressure in the ends of the valve chamber 45, vent passages 5| are formed from the ends of the valve chamber to exhaust ports or channels 55. It will be noted that the valve chamber 45 is made relatively long whereby to permit lon 'tudinal adjustment of the stroke ofthe valve mem As will be evident in Fig. 1 of the piston rod l5 extends from the valve chamber 45 through a packing gland 52 toward the gear box l9. The outer end of the piston rod l5 isedetachably connected by means of a set screw 53 to a slidable rod 54 which extends through the adjacent wall of the' gear box and is screwthreaded at its inner end into ablock 55. A similar rod 55 is screw-threaded into the opposite side of the block 55 and extends slidably through the opposite wall of the gear box so as to support the block 55 for movement parallel to the path ofv movement of the valve l5- In its lower surface the block 55 has a groove extending transverseLv of the axis of the rods 54 and 55 to receive a roller 51 which is mounted eccentrically of a disk 55'. The disk 55 is rotatably supported on a sleeve 55 which is in turn rotatable about a vertical pin (not shown) carried by'a plate 55 which rests on the bottom of the gear box l5. Thus in rotation of the disk 55 the rod 54 is reciprocated.

Since the valve member 45 may become stalled by foreign matter in the ports 44, a yielding connection is provided between the rod 54 and the piston rod l5. To this end the rod 54 is tubular in form and has an expansion spring 54 fixed therein adjacent to the block 55. Bearing against the end the spring 54' is a head 5| formed on the end of the piston rod I5, and between the other side of the head 5| and the outer end of the sleeve-like rod 54 is a second-expansion spring 54''. This spring bears against a collar 54 which surrounds the piston rod. l8 and is flxed to the rod 54 by the set screw 55. Y

The sleeve 55 and disk 55 are rotated by a suitin the present instance consists of intermeshing gears 5| and 52. The gear 5| is fixed on the sleeve 55 while theother gear 52 is carried on a rotatable shaft 55 mounted in and extending vertically through the bottom of the gear box I5. It will be noted that the sleeve 55 and the dish 55 are located eccen of the axis of the shaft 55 and that the plate 55 is mounted in a recess 54 for rotaaxis of the shaft 55. Thus by rotating the plate 55 the disk 55 may be moved toward and away from the valve l5.

This construction is utilized to adjust the lap and lead of the valve member 45 and to facilitate this operation an eccentric cam 55 is mounted byithe plate 55 so a radial slot 51 in the plate of the'cam 55 the plate 55 about the axis of the tion about the that the cam engages |5 effected.

tion a-nut 55 is threaded on theshai't "above the cam. By adjusting the lap and lead of the valve "the speed ofthe suction orex'haust strokes of the pump. may be varied to meet the conditions imposed by the particular reagent to be pumped. Knocking of'the reciprocating parts may also be eliminated through this adjustment.

drawings a described, the combination of a pump,

At its lower end the shaft 63 has a pin connector so that it may be readily associated with the driven shaft of the meter l3 or other flowresponsive device. Preferably the shaft, 63 extends upwardly through the removable coverplate 10 of the gear boxso as to provide forithemany installations.

It will be apparent from the The cially built devices.

I claim as my invention:

1. In a proportioning device of the character described, the combination of a pump, a reciprocatory fluid pressure operated motor operatively connected to said pump, a reciprocatory valve controlling the flow of pressure fiuid to said motor, a flow responsive device operable indeand lead of said valve.

2. In a proportioning device of the character a reciprocatory fluid pressure operated motor operatively connected to said pump, a reciprocatory valve controlling the flow of pressure fluid to said of said valve. v

3. Apparatus of the character described comprising a reciprocatory motor, a reciprocatory mg a terminal gear operativelyconnected to said said valveand thereby adjust the lap and lead of the valve.

4. Apparatus oi the character described comcontrolling said motor, a gear box having a' rotary driven shaft therein, reduction gearing in areciprocatory motor, a pump'operated thereby,

a reciprocatory valve controlling said motor, re-

means for locking said means in the desired adjusted position. 7. A device of the character described comprising alined motor and justing the distance between the remote ends oi said pistons, and valve means controlling the flow of motive fluid to said motor cylinder.

8. Apparatus of the character described comopcrable to vary the 9. A device of the character described comprising a reciprocatory motor, a reciprocatory pump actuated thereby, means operable to adjust .the stroke of the pump while maintaining a constant clearance volume therein, a reciprocatory valve controlling 10. A device 01' the character-described comprising a reciprocatory motor, a reciprocatory pump actuated thereby,

vice, a, yoke fixed to along one side 01' said box, a pump cylinder and 4 a motor cylinder horizontally positioned and carried at opposite ends of the yoke in alinement with each other, pistons in said cylinders, means connecting said pistons and extending across said yoke, a valve mounted on the side or said motor cylinder to control the same and adapted for longitudinal sliding movement parallel to said cylinder and toward and away from said gear box, said means in said gear box being operatively connected to said valve for reciprocating the same. a A

12. In a device of the character described, the combination or a reciprocatory pressure fluid operated motor, flow-sensitive device adapted to be interposed in a pipe line rotary element, a rod reciprocated longitudinally by saidrotary element, a reciprocatory valve controlling the flow of pressure fluid to said motor,

and a motion-transmitting connection between said rod and said valve, said connection being yieldabie in both directions rod from a normal centered position.

13. Apparatus oi the character described compressure fluid ope ted motor, a reciprocatory valve: controlling the ow of pressure fluid to said cylinder, an independent power driver element, and means operable by said element to apply yielding force to said valve alternately .in oppositetdirections to reciprocate the valve.

14. Apparatus oi the character described combining a reciprocatory pressure fluid operated motor, a reciprocatory valve controlling the flow of pressure fluid to said cylinder, a positively driven element actuated independently of said motor ior reciprocating said valve and means forming a connection between said element and said valve co cted to yieldfin either direction from a normal centered relation for distance, exceeding the normal stroke length of the valve. x

' 5, A device of the character described comprising a .reciprocatory motor, a reciprocatory pump actuated thereby, means just the pump stroke while maintaining a constant clearance volume therein, a reciprocatory valve controlling said motor, and means ior actuating said valve including replaceable gearing actuation rate 01- the'valve. 16. A proportioning deivce comprising a recipcombination,

and including a valve for controlling operable to adto be interposed in a main rocatory motor, a reciprocatory pump actuated thereby, a rotary flow responsive device adapted to be placed in a pipe line to measure the flow therethrough, a reciprocatory valve controlling said motor, and a connection from said flow responsive device for actuating said valve, said connection including replaceable change gears for varyi fl the relative rate oi actuation oi said valve.

1'1. Proportioning apparatus comprising in a reciprocatory pump, a reciprocatory pressure fluid operated motor for operating said pump. a valve for controlling said motor, a

flow responsive in a pipe line to measure the and anoperating connection said valve including replaceable change gears for varying the relative rate of actuation of said valve. 1

18. Proportioning apparatus comprising, in combination, a flow responsive device adapted to device adapted to be connected flow therethrough,

therethrou a supporting structure carried by said device, a reciprocatory fluid-motor and a reciprocatory-pump operatively interconnected and mounted on said-structure, a valve carried by said structure incontrolling relation to said motor, and an operating connection between said device and said valve including change gears carried by said structure and mounted for replacement while said pump in position on said structure.

19. Apparatus oi the character described comprising, in combination, a reciprocatory pump, a reciprocatory pressure fluid operated motor operatively connected to said pump, means for adjusting the stroke of said pump, a reciprocatory valve for controlling said motor and an actuator for said valve including means for adjusting the lap and lead of said valve.

20; Proportioning apparatus comprising in combination, a reciprocatory pump, a reciprocatory pressure fluid operated motor therefor, a

said motor, a flow responsive device adapted conduit to meter the flow therein, and an operating connectionbetween said device and said valve including means for varying the relative rate of actuation of said valve.

. UDY LOWE.

from said device to and motor remain