US1156063A - Centrifugal pump. - Google Patents

Description

R. DANIEL. CENTRIFUGAL PUMP. APPLICATION FILED OCT. 28, 1912.

Patented Oct. 12, 1915.

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CENTRIFUGAL PUMP.

APPLICATION FILED OCT. 28. 1912.

Patented Oct. 12, 1915.

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l To all whom itmay concern: I

I OFFICE.

, PAUL DANIEL, or JAMAICA, NEW YORK.

" ,CENTR1FUGAL PUMP.

Specification of Letters Patent.

Patented Oct. 1 1915.

Application filed October 28, 1912. Serial No. 728,l)'5-7.

and useful Improvements in Centrifugal Pumps; andI do hereby declare the following to be a' full, clear, and exact description of the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

The present invention has relation to an improved form of bearing for rotary devices whose bearings ordinarily afford paths. for leakage of fluid under pressure, such,

for instance, as centrifugal pumps. The

improved bearing ofiers material and olovious advantages as over the ordinary stuff- 7 bearing 26 which servesas. a forward abuting box.

I have illustrated-my invention in connection ,with a centrifugal pump, although the same is obviously applicable in other connections.

Figure 1 is a longitudinal section "of one" form of my improvement and Fig. 2- is a similar view of a modification thereof.

As shown in the drawing the pump comprises avpump' chamber having a substan-' tially cylindrical portion and a conical portion 11, uniting therewith and preferably separable therefrom along a ,circular line, the two portions being firmly clamped together by means of the bolts 12. a The fluid -to be pumped is led to the chamber ll'by means of'any appropriate -inlet .pipe connected by means of the union 13'to the inlet nipple 14 which connects with the narrow end of the conical chamber 11. The oppositeend of the cylindrical portion is provided with an outlet chamber 15 which communicates with the delivery pipe 16.

' Within the chamber 11, is placed a rotary member which comprises the usual central shaft'l'? provided with one or more vanes 18. In the form shown fourof these vanes are used. The vanes inquestion diverge I symmetrically-from the shaft 17 and are preferably bent at their ends as" shown at 19 so as to present a convex surface to the fluid as the rotary memberjrevolvesi The I outer edges of the vanes are so disposedthat" each comprises a tapering portion and 'preferably a non-tapering portlon 'is also. pro

vided so that in the preferred form these outer edges are made parallel to the elements of the cone 11 and cylinder respectively. These edges arepreferably brbught very close to the walls of the chamber.

The chamber is provided with a hollow stem 20 which serves to afford a firm supa belt 23, but any well known means may be employed for this purpose;

box in connection with my device I prefer to employ the construction shown wherein a suitable bushing'24 closes the inner end of the "stem 20 and against'which' bears a secvond bushing 25 provided with a conical seat.

This latter isloose on the shaft. Behind ment for a spring 27 within the hollow of In" order to avoid the useofthe stufiing the bushing'24, I. place revolving thrusting r the stem 20,- and 'the outer end-of said spring bears upon a sleeve 28 firmly-fixedto the shaft 21, as by means of the-set-scre-w, 29, so that the" efl ort of the spring 27 a-cts through the shaft 21 to cause the conical base of the shaft 17 ,to bear-firmly upon the seat 25 on the bushing 24 and thus afi'ord the necessary tight joint. I prefer to so ar-v range the vanes 18 that they will converge within theinlet nipple '14. I The mode .of. operation of my device is" to a point on the axis ofrevolution just as follows-The entering water meets the *narrowestportions of the vanes 18, which are moving at a relatively low rate of speed and as the water advances it is influenced 'by' a more and more rapidly moving portion of a each vane. The effect. of the rotating v'ane stream which hugs the inner-face of the ters' thecylindricalportionfof the pump chamber where the speed is continued by '6 1 the non-tapering portions of the'vanes-i and is to force the entering water or other fluid to move in acon'stantly expanding conical I the condition of uniformity is established before the fluid enters-the outlet opening 15 top'ass'out through the delivery p1p'e316 The :form of bearing, shown preserye's' continually a perfectly tight condition againstleakage, since all wear of the conicalsurfaces is taken up by the f In Fig. 2 is shown a modification of the device wherein a strong flat spring 30 is fixed to the back of the pulley 22 and bears upon a bushing 31 similar to the bushing 25 at the opposite end. The spring sets into a transverse recess or groove 32 in the head of the bushing 31, and thus causes the latter to revolve with the pulley and. shaft. This latter form is appropriate to larger pumps, and can be used with a short shaft 21, lubricated by means of an oil feed pipe 33.

What I claim is 1. In a machine operating with a fluid under pressure, a chamber having a conical seat and a hollow extension beyond it, a

revoluble member having a conical portion fitting said seat, a shaft on said member passing through said extension, a conical seat on the outer end of said extension, a sleeve on said, shaft having a conical portionfitting said second seat, .and a spring adapted to press both of said conical portions against their respective seats while permitting said shaft and revoluble member to turn, substantially as described.

2. In a machine operating with a .fiuid under pressure, a chamber having a conical said groove and abutting against said pulley,

substantially as described.

8. In a centrifugal pump, a pump chamber having a seat and an extension beyond it, a

revoluble member within said chamber having a portion fitting said seat, a shaft .on said member passing through said extension, a suitably seated revoluble bushing on said shaft at the outer end of said exten-' sion having a transverse groove, a driving pulley on said shaft, and a spring on said,

pulley seated within saidgroove on said outer bushing, substantially as described.

In testimony whereof, l afix my signature, in presence of two witnesses.

- PAUL DANIEL.

Witnesses:

' H. .S. MACKAYE, 'K. C. MEAD.

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