US1728788A - Division plate for pumps - Google Patents

Description

Sept. 17, 1929. E. J. DE VILLE DIVISION PLATE FOR PUMPS Filed. Deb. 7, 1926 '20 as a single integral unit.

' Patented-Sept. 17, 1929 I UNITED STATES P NT oFFnc E EDWARD .1. DE VILLE, or DAYTQN, 01:10, ASSIGNOB To run MONABCE axenmnmec'omramr, or Darrow, 01110, A conroramrron or 01:10

IlIVISION PLATE FOR PUMPS Application fled December 7, 1926. Serial No. 153,106..

My invention relates'to pumps of the horizontal reciprocating type and more partlcularly to the provision of a division plate between the suction and dischargechambers of 5 such pump, having a valve seat or seats for the discharge valves formed integral with such plate.

It has been customary to provide valve seats, usually of brass, as independent units which are screwed into the division plate. Such valve seats require careful machining in manufacture and involve comparatively expensive production. arises for replacement of such valves, they are diflicult to remove from the division plate, due to corrosion.

In the present invention there is contemplated the production of a division plate with one or more valve seats formed thereon The valve seats are preferably formed by embossing the plate by a stamping or pressing operation, by which the valve seat area is elevated above the plane of the plate. The division plates however may be cast or otherwise formed with an integral valve seat area projecting from one face thereof. Such plates with integral valve seats may be produced sufficiently cheaply to permit the entire plate to be discarded and anew one substituted whenever the valve seats become worn or otherwise require replacement.

One of the primary objects of the present invention is to simplify the structure as well as the manner of replacing valve seatsfor pumps and the like, whereby they will not only be cheapened in construction, but, will be more eflicient in use, compact in form, economical in production, facilitate replacement, and unlikely toget out of repair.

A further object of the invention is to v provide as an article of manufacture, a division plate and one or more valve seats integral therewith.

-With the above primary and other incidental objects in view as will more fully ap; pear in the specification, the invention consists of the features of construction, the arts and combinations thereof and the m ed When the occasion the air dome 6 and from which leads the o eration, or their equivalents, as hereina r described and set forth in the claims.

In the drawings, wherein is shown the preferred, but obviously not necessarily the only form of embodiment of the invention, Fig. 1 is a sectional view of a typical horizontal power pump assembly, embodying the present invention. Fi 2 is a perspective view of the top of the fivision p ate forming the subject matter hereof. F1 3 is a similar view of the under side of the late. Fi 4 is a transverse detail sections. view. ig. 5is a sectional view of a modification.

Like parts are indicated by similar characters of reference throughout the several. views.

Referring to Fig. 1 of the drawing which shows a typical pump construction, 1 is the c linder, and 2 the reciprocating iston t erein. The op osite ends of the cy der .70 communicate wit intake or suction chambers 33 htving inlet valves 4-4. Above the suction or intake chambers is the discharge chamber 5, with which communicates dischar e conduit 7.

The 's'charge chamber and suction chambers are separated by a division plate 8 supportin discharge valves 99 which forms the su ject matter hereof. Ordinarily the valves 9-9 are provided vwith independently formed valve seats screwed into' the late 8, which is usually quite thick and ma e of cast iron. The usual valve seats are quite bulky and'support the valves in elevated relation above the plate. They become fixedly attached to the plate by rust and corrosion and are diflicult to remove for replacement if or 'repairs.-- Such plate and separately formed valve seats are too expensive in con-,- struction tojustify discarding the ent re plate and both valve seats when only one seat ma be defective.

the present instance the plate 8 is of sheet metal and preferably 'of brass, althoughother materials may be emplo ed. The seats 10 for the valves 9 in the pre'fiirred construction are embossed in the plate from the under sige, and are indented as at 10" on the under s1 e.

They pro ect from the upper faceas an annular fiat surface, elevated slightly above the face of the plate, upon which the valves 9 seat.

Within the annular flat seating surfaces 10 are formed a series of perforations 11 for the passage of liquid from the chambers 3 to the chamber 5.

While in the preferred constructionthe raised seating surface is annular and the perforations 11 are in the enclosed area below the level of the seating surface, obviously the perforated portion and seating surface may be in the same plane as shown in Fig. 5.

Located centrally within the raised seat ing area is a valveguide stud 12, securedto the plate by riveting or staking, soldering, brazing or other suitable means. The disc valve 9 is slidingly mounted on the guide stud 12 and is urged toward the valve seat by a helical spring 13 reacting against a collar 1 1 upon the stem 12 in the usual manner.

A division plate with integral valve seats may be so cheaply manufactured, that the replacement of the entire plate is justified in making repairs, and thus the difficulty of removing valve seats .from the plate and regrinding and repairs of valve seats are'entirely obviated. Such a replacement of the plate with integral valve seats can be effected by one unskilled in pum mechanics, and

without the use of specia tools and equipment.

From the above description it will be apparent that there is thus provided a device of the character described possessing the particular features of advantage before enumerated as desirable, but which obviously is susc'eptible of modification in its form, proportions, detail construction and arrangement of parts without departing from the principle involved or sacrificing any of its advantages. While in order to comply with the statute the invention has been described inlanguage more or less specific as to structural-features,

it is to be understood that the invention is not limited to the specific details shown, but that the means and construction herein disclosed comprises the preferred form of several modes of putting the invention into efiect and the invention is, therefore, claimed in any of its forms or modifications within the legitimate and valid scope of the appended claims.

Having thus described my invention, I claim: I

1. A plate forming a division wall between two adjacent chambers of a pump,.a valve seat formed integral with said plate by indentingone side of the plate to form a corresponding-projecting area on the opposite side thereof having a flat top surface to receive a valve, said plate being perforated within the area forming the valve seat, and a stud secured to the plate within the perforated area forming a support and guide for a valve.

2. A-plate of sheetmaterial forming a division wall between adjacent chambers of a pump and adapted to be clamped between separable chambered members, an annular flat topped embossed area on said sheet material plate forming an integral valve seat, the plate being perforated inside said annular embossed area, and a valve guide stud carried by the plate.

3. In a construction of the character described, a division plate of sheet material for pump chambers, and an integral raised valve seat formed thereon by offsetting a portion of the material out of the normal plane of the plate, said plate being perforated within the raised valve seating area and a valve guide stud disposed within said area.

4. In a construction of the character de' site face of the plate bysuch indentation, said plate being perforated within the margin of such indentation, and a valve guide stud carried by the plate in centrally disposed relation with the indentation .and raised valve seating surface.

6. As an article of manufacture, a division plate for pump chambers, two spaced integral valve seats formed thereon and defined by annular-indentations in one face of the plate and corresponding elevated annular surfaces upon the opposite face of the plate, the plate being perforated within the annular indented areas, and fixed studs located within such perforated areas.

' 7. A division plate for pumps forming a division wall between adjacent chambers, an annular fiat topped embossed area insaid plate forming an integral valve seat, the plate being perforated interiorly of said embossed area, and avalve guide stud carried by the plate.

In testimony whereof, I have hereunto set my hand this 26th day. of November, A. D. 1926.

' EDWARD J. DE VILLE;

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