US2648986A

US2648986A - Pump drive

Info

Publication number: US2648986A
Application number: US98834A
Authority: US
Inventors: Morris W Guyer
Original assignee: Calkins Manufacturing Co
Current assignee: Calkins Manufacturing Co
Priority date: 1949-06-13
Filing date: 1949-06-13
Publication date: 1953-08-18
Anticipated expiration: 1970-08-18

Description

Aug. 18, 1953 M. w. GUYER 2,648,986

PUMP DRIVE Filed June 15. 1949 4 Sheets-Sheet 1 IN V EN TOR.

Atty

Aug. 18, 1953 M. w. GUYER 2,643,986

PUMP DRIVE Filed June 13. 1949 4 Sheets-Sheet 2 INVENTOR. Harm's BY Any.

Aug. 18, 1953 w, GUYER 2,648,986

PUMP DRIVE Filed June 13. 1949 4 Sheets-Sheet 3 INVEN TOR. [701/213 M Gage Aug. 18, 1953 M. w. GUYER v ,6

PUMP DRIVE Filed June 15. 1949' 4 Sheets-Sheet 4 IN VEN TOR.

Airy. 1.

Patented Aug. 1 8, 1953 UNITED P The-present invention relates to improvements i-iai pllmp -drive;

I .is;:theprinoipal'purpose of my invention togprovidean improvedpump anddrivethat particularly useful -in-,handl-ing liquid suspensions of =pow-dered: materials that tend tosettle out; oneiparticulareuse ofrthe pumpis in connection with'ithe treating of seeds; It is the practice now in rmanyzseed treatments toemploy an active chemical inc powderedt form-.- The amount ofrchemicalinproportion to the amount of seedrciexfi i melyi small, so it becomes necessary to dilutethe'chemical with an inert powder that acts asga; carrier to furth'er distribution of the chemical. As a iurther means ofpreventing waste and inj uryato the; health of-;-th'eoperators; the active j chemical-andinertpowderis suspended in a liquid" such as water or oil-,j to form what is termed a urry,

In. seedtreating; this slurry is agitated to maintain the suspension of the-powders and is then .,-measured-out and dischargeduponthe seed and thoroughly mixed therewith to get as uniform distribution as possible. The powdered ma terilSare-oftien: abrasive and are invariably diflicult to maintain-in suspension. The pump and,

drive mechanismof the lpresent invention isparticularlylapplicable to the handling of this type of piQdfi'f Mor'fparti'cularly it is- -the purpose of my' in.-- vefit'ionftoff'provide. a'pump' wherein the actual liqui'd movingf'parts of the pump are arranged,- in' a; 'h'ousingfwhichi is'Yeasi1y, 'openedfand drained and thebearin'gs' and drive mechanism are so mounted as to be clear of the liquid "at all" tithes" andfnjo disturbed by: the openingiof the pump? for"rem'o val of1' anyf accumulation of powdered material therein:

It is a further purpose ofmy invention" to pro pump-isj attached.

Mfurtherpurpose of ="th'einvention is "to pro vide a---novelfpumpconstruction whereifithe interior 'oithe'pu'mpis open to theatmosphere during operation even though the-pump may'have to raise the liquidssothat it is working against" ahad pressure considerably aboveatmospheric pressure' Thei nature and advantages of my invention w ill appear more fully iromthe following descrip-- tionand the accompanying drawingswherein a preferredembodiment of the invention is shown;

ltwi-ll be readily appreciatedg however; that minor changes? and improvements may be made inthe construction twithout departing from the scope of the-invention as defined by the-claims;

ln -the drawings: Figure 1 isan end view of a seed treating ma chine of the -type-referred to above, illustrating my improved-pump in connection therewith;

Figure-2 is an enlarged fragmentary view taken on-the line;22 of Figure-1 illustrating the drive" mechanism- 0f the: pump;

Figure -3 is asectional-view'taken on the line. El -430i Figure 2-showing-the upper, or drive, end- Figure-4 is a fragmentarysectional view taken on'the line -4+4 of Figure 2;

Figure 5 is aside view of thelower end of the Figure 6is a sectional View taken on the .line 6*? of Figure 5;

Eigure 'Iis abottom View looking up at Figure 6 on; the line-'l-l-oi Figure 6 with the bottom closure removed; and

Figure-8 is a plan-viewof the pumpimpeller.

Referring now to Figure 1, my pump is shown in connection--witha seed treatingmachine to illustrateone of the applications. However, it should beunderstood that the use of the pump is; not 'limited to seedrtr'eating as it may be applied wherever the characteristics embodied in the pump are of'advantage. The seed treating machine includes a seed hopper iii, a-v mixing trough ll, aslurry mixingatank l 2, a slurry dise tributing means', which is hidden by, the hopper lfl'in Figure. 1. and a slurry overflow return |3- to theltank l2. A machine of this character is "shown-J in my prior patent application, Serial Number-f787,1 34, filed November 20, 1947, Patent N6;12,c0o;641 dated June 17, 1952.

In machines of this character the slurry is pumped from the bottom of the tank I2 through a hose i i-into the slurry distributor whicheme bodiesa' measuring device; The' flow of'slurry to the distributor is continuous and any overflow from-"the measuring device is returned to the tank I2. A'motor I5- operates a mii cingscrew "m 'the mixing trough H'by means of a V belt I Wandpulleys l 1 and* i 8; The stirring mecha-' nism forthe slurry in the tank lZ-is-driven by a pulleyand'belt take-ofi from the pulley l8? This take oiiincludesa pulley IS, a belt 23' and a pulley 2|. These'parts are merely'described toexplainthe' application of my improvedpump 2 2" and its' drive meohanismtoaparticular Ina-- china- 4 The-pump-22 embodies amain p

tubular column members

24 and 25 and a drive mechanism 26 for taking power from a belt such as the belt IS. The outlet hose I4 is connected to the housing 23 and an outlet connection 2? from the tank |2 is connected by a flexible hose 28 to the bottom closure unit 29 of the pump 22.

Figures 2, 3 and 4 illustrate the upper end of pump and the drive mechanism. A shaft 30 18 mounted in the

tubular members

24 and 25 by

bearings

66 and 61 and a sealing member 68. The

bearings

66 and 61 are seated in a member 25, while the sealing member 68 is seated in the member 24. A grease cup 69 is provided in the member 25 to supply oil for the bearings 66 and Bl. The member 24 has an aperture Ill therein close to the top thereof. The

members

24 and 25 are telescoped at their meeting ends and clamped together by a clamp ring II to make a tight joint.

A drive wheel 3| is fixed on the reduced upper end of the shaft 30 by a set screw 32. The drive member 3| rests on the inner race of the bearing 66 and supports the shaft 30 at the proper level. A mounting bracket 33 is clamped to the top end of the member 25 and supports two

rollers

34 and 35 which cooperate with the wheel 3| to cause the belt Hi to drive the wheel. As shown, the roller 35 is positioned to press the belt l6 against the wheel 3|. by an eccentric hub 36 and a bolt 31 so that it can be adjusted toward and away from the wheel 3|. For a given belt size this provides a means to vary the speed of the pump somewhat by changing the level of the belt on the tapered surface of the wheel. This construction also enables one to set the roller 35 and wheel 3| for different sizes of belts It. The roller 34 is mounted by a like eccentric hub 38 and a bolt 39 so that it may be raised and lowered with respect to the wheel 3|. It will be noted from Figure 2 that the roller 34 is off-set lengthwise of the belt Hi from the wheel 3| and is adjusted to press the belt l6 down into the passage between the wheel SI and the roller 35 the necessary amount to provide the driving engagement between the belt l6 and the wheel 3|.

The pump housing 23 is fixed on the lower end of the member 24 and has a recess 40 for a pump impeller 4| that is fitted on the lower end of the shaft 30 (see Figure 6). The shaft 30 holds the impeller 4| slightly above the open bottom face of the housing 23 as indicated by the space at 42 in Figure 6. The fluid outlet from the impeller 4! is through a channel 43 in the housing 23 to a pipe 44. The open lower face of the housing 23 is closed by the member 29 which has an inlet passage 45 opened centrally beneath the impeller 4|.

As shown best by Figures 5, 6 and 7, the

parts

23 and 29 are secured together in such a fashion that they may be readily separated to gain access to the interior of the pump. The parts have

opposite flanges

46 and 41. The flange 46 has two locating ears 48 which receive an upturned ear 49 on the flange 41. A yoke 50 is provided with in-turned ends 5| and 52 to engage over the flange 46 of the housing 23. The flange 46 has seats at 54 and 55 for properly positioning the yoke. The member 29 has a downwardly facing boss 56 which is recessed at 51 to receive the upper end of a screw bolt 58 that is threaded into the yoke 50. It is evident that by turning the screw bolt 58 back, the yoke 50 can be lifted The roller 35 is mounted 4 off the member 23 so that the member 29 drops down to open up the interior of the pump.

The pump impeller 4| is composed of a lower outer ring 60, a central hub 59 and a plurality of upstanding vanes 6|, 62 and 63 arranged equidistant from each other. The vanes are notched as indicated at 64 and 65 in Figure 6.

The pipe 44 is connected to a three-way valve 12 which is coupled to the hose I4. The valve i2 has a drain outlet at T3. The hose l4 can be drained without opening the outlet of the pump. Also the valve connects the hose to the pump with the drain closed and can be set to drain both the pump and the hose.

It is believed to be evident from the foregoing description that I have provided a pump and drive mechanism wherein the pump itself can be submerged in and operated in the slurry with the drive mechanism and the bearing for the pump shaft entirely free from contact with the slurry. The pump and impeller construction operates to supply the slurry with the interior of the tubular member 24 above the pump impeller open to atmospheric pressure at all times. The openin 76 provides communication from the exterior to the space over the pump impeller. It is a peculiar characteristic of this construction that in operation the slurry is fed in through the inlet conduit 45 and discharged by centrifugal force through the passage 43 to the pipe 44. So long as the pump is operating the slurry does not build up in the tube 24. The inlet flow through the inlet opening 45 is somewhat restricted by the hub 59 of the pump impeller and the slurry which does enter the pump housing 23 is immediately driven by centrifugal force through the outlet channel 43. When the pump is stopped, there is a certain amount of slurry in the hose M which flows back and builds up somewhat into the tubular member 24 but the opening 10 is above the slurry level in the tank l2 so that the slurry does not escape through the opening 78.

From the foregoing description it is believed that the nature and advantages of my invention will be apparent to those skilled in the art.

Having thus described my invention, I claim:

1. Drive mechanism adapted to drive the shaft of a pump from a portion of a V-belt intermediate its supportin pulleys comprising a supporting column for said shaft, a bearing for said shaft in the upper end of said column, a drive wheel fixed on the shaft above the bearing, said drive wheel having a peripheral face for engaging a V-belt, a V-belt supported in tangential engagement with said peripheral face, a bracket on said column, a roller on said bracket having a peripheral face opposite the peripheral face of the drive wheel, the roller having its axis in a common plane with the axis of the drive wheel, the adjacent faces of the roller and the wheel in said plane being at substantially the same angle to each other as are the opposed driving faces of the V-belt to each other to urge the belt against said drive wheel, and a second roller on said bracket bearing on the outer surface of the belt to press it against the faces of the drive wheel and the first named roller.

2. Drive mechanism adapted to drive the shaft of a pump from a portion of a V-belt intermediate its supporting pulleys comprising a supporting column for said shaft, a bearing for said shaft in the upper end of said column, a drive Wheel fixed on the shaft above the bearing, said drive wheel having a peripheral face for engaging a,

V-belt, a V-belt supported in tangential engagement with said peripheral face, a bracket on said column and guide rollers mounted on said bracket, one of said rollers engaging the side of said belt most remote from the peripheral face of the wheel and the other roller riding on the outer surface of the belt to press the belt against the drive wheel.

3. Drive mechanism adapted to drive the shaft of a pump from a portion of a V-belt intermediate its supporting pulleys comprising a supporting column for said shaft, a bearingfor said shaft in the upper end of said column, a drive wheel fixed on the shaft above the bearing, said drive wheel having a peripheral face for engaging a V-belt, a V-belt supported in tangential engagement with said peripheral face, and members carried by said column adjustable with respect to the drive wheel for guiding the belt into driving engagement with the peripheral face of said Wheel, said members comprising a roller on the opposite side of the belt from said wheel, an eccentric mounting said roller for adjustment toward and away from the wheel, and a second roller riding on the outer face of the belt in advance of the point of engagement of the belt with the wheel.

MORRIS W. GUYER.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,072,650 Price Sept. 9, 1913 1,074,794 Hunt Oct. 7, 1913 1,361,958 Black Dec. 14, 1920 1,883,266 Yoder Oct. 18, 1932