US1844460A

US1844460A - Pumping apparatus

Info

Publication number: US1844460A
Authority: US
Inventors: Clyde G Butler
Original assignee: CINCINNATI BALL CRANK CO
Current assignee: CINCINNATI BALL CRANK CO
Priority date: 1928-07-13
Filing date: 1928-07-13
Publication date: 1932-02-09
Anticipated expiration: 1949-02-09

Description

Feb. 9, 1932. c. a. BUTLER PUMPING APPARATUS 5 Sheets-Sheet WM W Filed July 13, 1928 Feb. 9, 1932. c. G BUTLER PUMPING APPARATUS Filed July715, 1928 4 Sheets-Sheet 2 Q a vwemtoz Feb. 9, 1932. c. ca. BUTLER PUMPING APPARATUS Filed July 13, 1928 4 Sheets-Sheet 5 alibozmmga c. G. BUTLER 1,844,460

PUMPING APPARATUS Feb. 9, 1932.

Filed July 13, 1928 4 Sheets-meet 4 luvemtov %& JW 77' a 7% llli t ll

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Patented Feb. 9, .1932

UNITED STATES PATENT OFFICE CLYDE G. BUTLER, O]? CINCINNATI, OHIO, ASSIGNOR 1'0 THE CINCINNATI BALL CRANK GOHPANY, F CINCINNATI, OHIO, A CORPORATION OF OHIO rmme furm'rus This invention relates to pum ing apparatus and is particularly directe to a power driven pump delivering fluid under uniform high pressure through a discharge passageway containing a'device for limiting pressures in the discharge. The apparatus is adapted for use in any spraying or washing and has its output manually controlled by means of an adjustable spray nozzle valve adjusted according to the nature of the fluid losing pumped and a throttle. valve, these valves located at the end of the flexible liquid directing conduit leadin from the discharge passageway. The pump intake is controllable for withdrawing the fluid from any one of a plurality of sources at the selection of the operator and is so constructed as to be incapable of abuse.

it is, therefore, one object of this invention to provide an improved power driven pumping device for the apparatus which delivers a constant uniform volume of fluid under pressure.

Another object is to provide a control valve for selectively connectin the pump to any one of a plurality of flui sources.

Still another object is to provide a relief arranged in. the discharge passa eway for automatically at a predetermine pressure destroying the lift of-the pump and thereby preventing undue pressures in the feed line. These undue pressures result when the operator, with the pump operating, closes the throttle or adjusts the sprayer nozzle valve to such a degree as to prevent a discharge of the fluid in the same or greater volume or degree of pressure than that being supplied or developed lay the pump.

Still another object is to provide a device for maintaining the built-up line pressure in the event that the fluid being fed under pressure from the pump is lay-passed, or in the event that the power is cut off.

Still another object is to provide an improved main control valve and sprag or sup ply controlling valve embodied in a ischarge handle.

Uther objects relate to the specific arrangement of the parts making up the pumping apparatus as well as the mounting of the device relative to the supply reservoirs containmg the solutions to be pumped.

Further objects and advantages will be more fully set forth in a description of the accompanying drawings forming a part of this specificatiomin which:

Figure 1 is a side elevation illustrating a complete car washing equipment showing the pumping and control apparatus mounted on tanks containing the cleaning solutions and illustrating the connections by which the pump draws the solution from these tanks and discharges it under pressure.

Figure 2 is an enlarged top plan view of the pump and control apparatus.

Figure 3 is a side elevation thereof.

Figure 4 is a side elevation of a handle incorporating a spraycontrol valve and amain control for use at the end of th'e'dis'charge hose or conduit.

Figure 5 is a sectional View taken on line Figure 7 is a detailed sectional viewtaken on line 7-7, Figure 3, illustrating the arrangement of the pumping elements and the supply control valve in the intake passage-.

way. Figure 8 is a detailed sectional view taken on line 8-8, Figure 5, illustrating the relief passageway leading from the main discharge passageway to the relief valve cylinder and also showing the valve for maintaining the built-up linepressure when the relief valve opens and the pump is by-passed.

Figure 9 is a sectional view taken on line 9-9, Figure 7, further detailing the intake control valve for the pump.

Figure 10 is a detailed sectional view taken longitudinally of the control handle shown in Figure 4, detailing the control valve therein and the needle valve at the nozzle for controlling the spray from the nozzle.

Referring to the drawings,- the pum ing unit is indicated at 1. The elements ma ing up this unit are mounted on a base 2 thereof and the-entireiunit is-disposed on a pair of tanks 3-3, the tanks in turn being mounted in a recessed base 4.

Generally speaking, the pumping unit consists of a motor, transmlssion, pump, and a' 5 relief valve controlling the discharge, the cas- .A. switch box 13 is mounted on the motor and a conduit 14 extends therefrom into the motor for enclosing the motor leads. The details of the motor and switch box or control therefor are of no importance inasmuch as they may be. of any conventional-type.

The extendingmotor shaft 15 (see Figure 5) is journalled in an attaching flange 16 of the motor casing. The drive shaft is journalled by insertion within gear 17 disposed within the casing, the gear 17 being mounted in a ball bearing 18 secured within the flange 16 and the shaft 15 in driving connection with the gear by means of a key 19. The opposite end of the gear from that journalled in the casing flange. 16 is loosely mounted within another gear of the transmission. The gear 17 as a pinion gear meshes with a large gear 20 also journalled within the casing flange 16 in ball bearings 21'. The gear 20 has a shaft 22 in keyed connection therewith, the shaft 22 extending across the transmission casing and being keyed within another pinion gear 23, the pinion 23 being journalled loosely within the gear 20 and in the opposing or forward wall 24 of the transmission casing within a ball bearing 25.

' The pinion 23 meshes with a large gear 26, namely, the gear journalling the outer end of the pinion 17, this gear 26 being also journalled within the forward wall 24 of the transmission casing in a ball bearing 27 having keyed therein the trunnion 28 of a pump ing gear 29.

The pump driven by this speed reducing 5o transmission, comprises, a pair of intermeshing gears, namely, the previously mentioned gear 29and a gear 30. A pumping chamber indicated at 31 (see Figure 7) is formed by the assemblage of three casing elements. An

end plate 32 for the pump casing is disposed adjacent and attached to the transmission casing and serves as the journal element for the respective trunnions of the pumping gears. A second end plate33 as the journal for the 60 opposite trunnions of the pumping gears, se-

cures an oval-shaped main pump body 34 against the first mentionedend plate 32 by means of screws 35 passing through the entire assemblage and'screwed into the transmission a casing. This last mentioned end plate 33 is cast to extend outwardly and to contain the relief valve passageway and mechanism and the discharge passageway. The driving trunnion 28 is sealed against leaka e from the pump casing by means of a packmg gland 36 er2igaged into the outer face of theend plate 3 The intermediate pump body 34 and the

respective elements

32 and 33 have the same contour (regarded in Figure 7) with the exception of various bosses formed on the casing body 34 for the urposeof mounting the device for controllmg the inlet passageway to the pumping chamber 31.

There are three sources of sup ly which may be connected by this controFwith the pumping chamber. One of these, shown in Figures 7 and 9 and indicated'at 37 may ex tend to the fresh water supply. The other sources of supply are the two tanks 3-3 on which theapparatus is mounted, the connection of these tanks to the control inlet passageway being bymeans of pipes 38 and 39.

A control valve 40 is rotatably mounted in the pump body 34. The body of the valve 40 is segmental in shape and an inwardly extending trunnion 41 thereof is journalled in the front wall of the pump body providing the rear mounting on which the valve is rotated. The forward end of the valve body is provided with a handle 42, the forwardly extending shank portion of this handle being concentric with the aforementioned stud. and being suitably journalled in a plate 43, the lower end of this plate being traversed by the shank and the upper end being traversed by a pair of attaching screws 44, screwed into the front wall of the main body casing of the segmental valve body. The radiallyv extending portion of this passa eway is swung by means of a control hand e to any one of three positions to register with the three supply sources previously mentioned.

The conduits for the three sources, namely, the pipes 37, 38 and 39 are screwed into a floating valve element 46. The valve proper, previously described, is mounted on a fixed center and the last mentioned element has a concave upper surface spring urged against the segmental body of the valve. The upper surface of the spring urged valve element is slightly wider than the formed surface of the segmental body and is recessed as at 46 to receive the width of the segmental body face. As shown in Figures 7 and 9 the floating til!) till til

valve is provided with a downwardly extending stud 47 this stud being reduced in ing the stud, by means of a nut 51 screwed into the lower end of the bore in the boss 49. This arrangement of the valve elements provides a seal at the point of selective sliding connection of the valve passageway with any of the sources.

The passageway continuation 52 of the iresh water supply is through the stud by means of the connection of the pipe 36 to the lower end thereof, this passageway 52 extending radially of the valve rotation center to the mating surface of the respective valve elements The pi cs 38 and 39 connect to the front end the floating valve element and the passageways 53 into which they connect are turned at right angles and extend upwardly to the mating surface in a direction radial of the center of valve rotation and at each side of the passageway 51.

In order to prevent accidental displace-'- ment of the supply control valve a spring pressed detent 54 is mounted in the front wall ot' the pump body casing and is adapted to engage in any one of three indentations 54" arranged on the rear face of the segmental valve body. These detents are arranged to set the valve in any selected one of its supply intake positions.

The previously described end plate 33 lorming the chamber has a lateral extension 55 in which a pair of parallel passageways 56 and 57 are formed, hereinafter described as discharge and relief passageways respectively, these passageways extending longitudinally of the extension. The passageway 56 extends from the pumping chamber 31 in the region of the incoming intermeshing teeth of the pumping gears and constitutes the discharge passageway.

The pumping gears 29, 30, of the rotor herein used are formed and function somewhat alter the manner of the fluid rotor described and claimed in co-pending application Serial No. 256,649. The gears as de scribed in the co-pending application have passageways termed in each tooth thereof, connecting the crowns of the teeth with the ends thereof, the openings formed in the crowns permitting the discharge of fluid trapped between the inter-meshing teeth serially and successively laterally through a discharge opening in the end wall or the pump casing} in the present case the same type of gear is used but the discharged porting in "the pump casing is varied. The passageways in the teeth of the resent gears are indicated at 29 and 30 or the respective gears 29 and 30.

A small discharge passageway, indicated at 58, extends parallel with the main discharge passageway 56 and connects thereto remote from the pumping chamber, being adapted to discharge the liquid laterally from the gear teeth in the same manner as in the co-pending application. The main passageway 56, however, is considerably larger than the passageway 58 and enables a lateral discharge of all liquid swept into the zone of intermesh and transported between the respective teeth from the point of the intake passageway 41, the crowns of the teeth being in sealing contact with the circular walls of the pumping chamber (see Figure 7 This discharge through the passageway 56 is prior to the actual intermeshing of the gear teeth, the small discharge opening taking care of the dischargeof the remaining fluid trapped in the pockets formed by the intermesh. The

passageways

58 and 56 are I connected, the small passageway 58 entering a cross passageway 59 joining the-main passageway 56 and the relief passageway 57.

As shown in Figure 8, the main passageway 56 extends upwardly at right angles at its outer end as at 60 and is connected to a manifold 61 to which any number of supply conduits may be connected, two indicated at 62-62 being shown in this instance.

A ball valve 63 as a back pressure valve is disposed on a valve seat 64 formed in the upwardly extending passageway 60 and is arranged to permit discharge and to prevent backward flow of the liquid, this valve func 'tioning when the fluid rotor is stop ed or when excessive pressure in the fee lines causes a relief valve 65 in the relief valve passageway to operate and to thereby out off the discharge of the pump. The relief valve 65 is slidably mounted in the relief passageway 57 in a block 66 disposed toward the outer end of the passageway. The relief valve is formed after the manner of a poppet valve, its head 67 seatin v on a valve seat at the inner end of the re ief passageway, which communicates with the intake side of the rotor. i

A coiled spring 68 disposed about the valve between the head thereof and the mounting block 66 holds the valve normally in closed position. The outer end of the valve beyond the mounting block has a piston 69 mounted thereon, this piston being slidable. in the cylinder 70 as a part of the bore forming the passageway 57, this cylinder being in communication with the discharge passageway above and beyond the ball valve 60 through a passageway 71, this passageway entering the cylinder toward the inner side of the piston 69.

The piston is formed of a pair of washers i 72 disposed at each side of a leather gasket 73 and the assemblage held on the end of the valve stem by means of a screw 7 4. The outer end of the bore forming the cylinder is closed by means of a cap 75. 4

A leather packing ring 76 is disposed around the valve stem and'within the side of the block 66 toward the cylinder, this packing ring being held in position by means of a. coiled compression spring 77 disposed between the piston and the ring.

A detent 78 is mounted within a cap screw 79 and extends through the block 65 for engagement with either one of a pair of indentations 80 in the stem of the-valve 65, the engagement of the detent with these indentations determining and limiting the open and closed positions of the valve.

Gate valves 81 rovide the connection of the respective con uits to the manifold. The

gear elements of the fluid rotor operate in the direction indicated in Figure 7 and normally discharge the liquid through the passageway 56, past the valve 60 and into the conduits.

If for any reason the various valves in the discharge conduits are closed and the pump left operating, the pressure would build up in the lines and would cause breaking thereof if some positive relief means were not provided. At the time that the pressure reaches the predetermined degree or danger point, the pressure also being uniformly developed in the valve piston chamberof the cylinder 7 O,

overcoming the resistance of the coil spring 68 and the resistance caused by the detent, will move the valve into an open position and cause the detent to engage in the indentation maintaining it in open position.

The relation of the indentations is such that the adjacent inclinations are a lesser obstacle to movement or depression of the detent than the outer inclinations thereof so that it takes more pressure to unseat the detent outwardly from the sides of the related indentations than it does to move it from one to another.

' This provides that the valve can only move into the two positions, since the pressure operating the valve stabilizes after operation or movement of the piston stem causing the detent to move from one indentation to the other.

The opening of the relief valve connects the discharge passageway 56 with the intake side of the rotor through the passageway 59 and 57, so that the result of continued operation of the rotor is to pump the liquid in a circle or to cause the pump to idle.

The ball valve 63 is held firmly on its seat by the maintained line pressure as opposed to the pressure relief in the passageway 56 and the pressure is therefore maintained 1n the valve operating cylinder until a time when the line pressure is reduced or unloaded.

A gauge 81 is screwed into the manifold 61 and indicates the line pressure. The flexible conduits extending from the manifold in each instance havea handle. 82 mount 1 at their. outer ends. This handle contains a main control valve indicated generally at 83 and provides a nozzle 84: controlled by a needle valve 85.

Acoupling 86 connects the flexible conduits to the handle, this coupling being secured to the handle as at 87. The handle provides a gripportion 88 and a tubular portion 89 containing a continuation 90 of the discharge passageway. A washer 91 providinga valve seat is secured between the handle and-the coupling and concentric with the discharge passageway.

A small poppet valve 92 seats on the wash- A and the slotted lug 96 are guidedwithin the slotted portion of the grip section of the handle and pivotal movement of the trigger is controlled by the pin 97. The valve stem,-

inasmuch as it extends from within the passageway to the exterior of the handle, is sealed by means of packing 99 surrounding tllgstem and held in place by a packing gland The nozzle of the handle extends substantially at right angles to the grip portion and the needle valve is mounted longitudinally of this nozzle portion. The nozzle element valve is adjusted relative to the orifice of the nozzle, its needle end being mounted adjacent thereto and slidable within a central bore of the washer.

The other end of the needle valve has a knurled head 105 disposed at the rear of the handle and a packing bland 106 seals this end of the neeedle valve. The knobor head 105 for adjusting the needle valve'is thus disposed immediately above the trigger or main control for the discharge in such a position as to be easily manipulated while the trigger is held down. The pressure within the line'- will immediately seat thepoppet valve upon a release of the trigger. Itis necessary that the same be held down to maintain a discharge from the conduit.

proper 101 is held in position'by an inter- Having described my invention, I claim: 1. In a device of the class described,'a casing, a pump mounted in said casing, said casing includin intake and discharge passageways for sai pump and a bypassage extending -from said discharge passage tothe intake side of the pump, a valve seated in said bypassage including a stem, a piston mounted on the outer end of the stem, a cylinder formed in the casing for said piston, said casing having a passage extending from the discharge passage to the cylinder on the inner side of the piston, a spring for seating said valve, said stem being intermediately mounted in said casing, said stem having a pair of longitudinally arranged transverse grooves therein, and a detent mounted in the casing adapted to contact said grooves whereby engagement of the detent in the re- 29 spective grooves determines the closed and open positions of thevalve.

2. In a device of'the class described, a casing, a pump mounted in said casing, said casing including intake and discharge passageways for said pump and a bypas'sage extending from said discharge passage to the intake side of the ump, a valve seated in said bypassage inc uding a stem, a piston mounted on the outer end of the stem, a cylinder formed in the casing housing said piston, said casing including a passage extending from the discharge passage to the cylinder on the inner side of the piston, a spring I for seating said valve, a pair of longitudinally arranged V-shaped transverse grooves in said stem, the tip between said grooves disposed below the surface of the stem, and a etent mounted in the casing adapted to contact said grooves whereby engagement of the detent in the respective grooves determines the closed and open positions of the valve and the low tip between the grooves permits easier movement from groove to groove than from the respective grooves in the reverse direction.

In witness whereof, I hereunto subscribe my name.

CLYDE G. BUTLER.