US1541435A - Rotary pump - Google Patents
Rotary pump Download PDFInfo
- Publication number
- US1541435A US1541435A US688293A US68829324A US1541435A US 1541435 A US1541435 A US 1541435A US 688293 A US688293 A US 688293A US 68829324 A US68829324 A US 68829324A US 1541435 A US1541435 A US 1541435A
- Authority
- US
- United States
- Prior art keywords
- shaft
- casing
- bearing
- rotary pump
- rotatable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0076—Fixing rotors on shafts, e.g. by clamping together hub and shaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
- F04C15/0073—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/17—Socket type
- Y10T279/17761—Side detent
- Y10T279/17786—Spring
- Y10T279/17794—Sleeved
Definitions
- This invention relates to pumps and more articularly to rotary pumps, such as are l iiequently used for pumping oil and the In the use of these pumps, particularly when the fluid pumped is oil, considerable difficulty is experienced in making the pump casing tight'against leakage.
- the ordinary design of such a pump is such that no particular difficulty is met with making oil tight joints, with the exception of that point where the rotary driving shaft enters the casing. At this oint a moving element must enter the casln at a point where the pressure of the flllld'lS active and it is very diflicult to prevent leakage of the fluid out of the casing through the shaft bearing.
- An object of this invention therefore,is to provide means for effectively sealing the I casing against leakage, particularly along the driving shaft.
- Figure 1 is a longitudinal sectional view of a rotary pump embodying this invention
- FIG. 2 is a section on line 22, Figure 1;
- Figure 3 is a plan view of Figure 1 with the cover removed;
- Fi re 4 is a detail in perspective showing t e connection between the shaft and the rotating element.
- Figure 5 is'a detail of the shaft retainer.
- 1 designates the casing which is usually of cast metal, such as brass, cast iron, aluminum or other suitable material.
- the casing is provided with an inlet 2 and an outlet 3.
- the inlet and outlet communicate with a chamber 4 adapted to house rotating elements 5 and 6.
- the rotating elements fit the chamber 4 closely at their sides and also at the periphery of said elements in such a manner as to prevent leakage to the fluid therearound.
- the element 5 may be mounted on a suitable stub-shaft 7 having a bearing in the casing 1.
- the rotatable element 6 is flexibly con- Y nected with the drive shaft 8 as illustrated in Figure 4.
- the element 6 is provided with a socket 11 ada ted to fit somewhat loosely over the end 0 the shaft 8'.
- the end 0 shaft 8 is provided with a transverse slot 13 adapted to receive the ins 12,when the end of the shaft is entere into the socket 11.
- the ins 12 thereby provide a key connection with the shaft 8.
- the fit is, however, sufficient y snug to accurately aline the element 6 radially.
- the casing 1 may be provided with an extended bearing 1-1 for the shaft 8 adapted to support the shaft.
- the cover 9 may be rovided at a point opposite the shaft 8 wit a boss 15 adapted to accommodate a socket 16 on the interior thereof.
- the socket 16 is adapted to receive a spring 17 adapted to force a ball 18 or other suitable bearing element against the rotatable element 6 so as to mamtain the same yieldingly seated against the shaft end of the casing.
- the shaft 8 may be formed with a shoulder 19 adapted to be engaged by a retainer 20 in the form ofa plug mounted on a spring-clip 21 and inserted through a hole 22 in the shaft bearing.
- a retainer 20 in the form of a plug mounted on a spring-clip 21 and inserted through a hole 22 in the shaft bearing.
- the spring-clip 21 encircles the bearing 14 and rests in a suitable groove 23 provided therefor.
- the shaft is thus removab-ly retained in its hearing. In order to remove the same, it is only necessary to disengage the clip 21 and remove the plug 20, after which the shaft may be slipped down- Wardly, Figure 1, out of the bearing 14.
- Means are provided for maintaining an effective seal between the rotatable pumping element and the casing Wall so as to prevent the fluid from leaking past said element and to the shaft bearing. This is accomplished by providing a flexible connection between the shaft and said element in order to permit the latter to adjust itself angularly with respect to the shaft, so as to maintain its seat against the casing wall. A yielding pressure is provided to maintain the element against its seat. The driving connection is at the same time such as to maintain the rotatable element radially in alinement.
- a rotary pump comprising, a casing, an element rotatable in said casing, a shaft having a loose driving connection with said element, and means for holding said element against the shaft end of said casing.
- a rotary pump comprising, a casing, an element rotatable in said casing, a shaft, means for holding said element against the shaft end of said casing, and a driving connection between said shaft and said element adapted to permit free seating of said element.
- a rotary pump comprising, a casing, an element rotatable in said casing, a shaft having a loose driving connection with said element, means for holding said shaft, and means for seating said element against the shaft end of said casing.
- a rotary pump comprising, a casing, a shaft having a bearing in said casing, a rotatable element adapted to seat against the shaft bearing and having a loose driving connection with said shaft, and means for holding said element against its seat.
- a rotary pump comprising, a casing,
- a shaft a rotatable element adapted to seat against the shaft end of said casin and having a loose driving connection wisaid shaft, and means for yieldingly holding said element against its seat.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Description
June 9, 1925. 1,541,435
E. L. RELLER ROTARY PUMP Filed Jan. 24, 1924 5 al 7 mm,
i Fig.2].
d l I fizieeforz [om/r A. fly/.55.
Patented June 9, 1925.
' UNITED STATES PATENT OFFICE.
EDWIN L. KELLER, OF ST. LOUIS, MTSSOURI, ASSIGNOR T0 WISSLER INSTRUMENT COM- PANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF DELAWARE aorARY PUMP.
Application filed J'anuar y 24, 1924. Serial No. 688,293.
To all whom it. may concern:
Be it known that I, EDWIN L. RELLER, a citizen of the United States, and residing at St. Louis, State of Missouri, have invented the new and useful Improvement in Rotary Pumps, of which the following is a specification.
This invention relates to pumps and more articularly to rotary pumps, such as are l iiequently used for pumping oil and the In the use of these pumps, particularly when the fluid pumped is oil, considerable difficulty is experienced in making the pump casing tight'against leakage. The ordinary design of such a pump is such that no particular difficulty is met with making oil tight joints, with the exception of that point where the rotary driving shaft enters the casing. At this oint a moving element must enter the casln at a point where the pressure of the flllld'lS active and it is very diflicult to prevent leakage of the fluid out of the casing through the shaft bearing.
An object of this invention, therefore,is to provide means for effectively sealing the I casing against leakage, particularly along the driving shaft.
Further objects will appear from the detail description taken in connection with the accompanying drawing, in which:
Figure 1 is a longitudinal sectional view of a rotary pump embodying this invention;
Figure 2 is a section on line 22, Figure 1;
Figure 3 is a plan view of Figure 1 with the cover removed;
Fi re 4 is a detail in perspective showing t e connection between the shaft and the rotating element; and
Figure 5 is'a detail of the shaft retainer.
Referring to the accompanying drawing, 1 designates the casing which is usually of cast metal, such as brass, cast iron, aluminum or other suitable material. The casing is provided with an inlet 2 and an outlet 3. The inlet and outlet communicate with a chamber 4 adapted to house rotating elements 5 and 6. The rotating elements fit the chamber 4 closely at their sides and also at the periphery of said elements in such a manner as to prevent leakage to the fluid therearound. The element 5 may be mounted on a suitable stub-shaft 7 having a bearing in the casing 1. The elements 5 The rotatable element 6 is flexibly con- Y nected with the drive shaft 8 as illustrated in Figure 4. The element 6 is provided with a socket 11 ada ted to fit somewhat loosely over the end 0 the shaft 8'. Within the socket 11 is a pair of pins 12 ri 'dly fixed in the element 7. The end 0 shaft 8 is provided with a transverse slot 13 adapted to receive the ins 12,when the end of the shaft is entere into the socket 11. The ins 12 thereby provide a key connection with the shaft 8. The ins,.h0w-
ever, fit somewhat loosely in the s 0t '13 and the fit of the shaft 8 in the socket 11 is sufliciently loose so as to allow the element the 6 to adjust itself angularly u on the shaft.
The fit is, however, sufficient y snug to accurately aline the element 6 radially. The casing 1 may be provided with an extended bearing 1-1 for the shaft 8 adapted to support the shaft.
The cover 9 may be rovided at a point opposite the shaft 8 wit a boss 15 adapted to accommodate a socket 16 on the interior thereof. The socket 16 is adapted to receive a spring 17 adapted to force a ball 18 or other suitable bearing element against the rotatable element 6 so as to mamtain the same yieldingly seated against the shaft end of the casing.
Since the element 6 is connected to the shaft in such a way as to permit angular alinement of said element, the pressure of the spring 17 will keep the element 6 alwa s in firm contact with the inner end of t e casing 1. It has been found that this con- .struction overcomes practically all difliculties experienced with leakage of the fluid along the shaft bearing. Since in former constructions the rotating element has been rigidly connected to the shaft, angular variation thereof with respect to the shaft has been impossible. Gonsequently since it is practically impossible to construct the apparatus in such a wa that the rotating element will be exactfy perpendicular to the shaft or that the inner face of the casing will be exactly perpendicular to the axis of the bearing, more or less gap has always been present between the rotating element and the casing. For this reason it has been impessible to prevent leakage of the fluid through this gap and thence through the shaft bearing to the outside of the casing. By the present construction this gap is em tirely eliminated so that it is practically impossible for the fluid to leak between'the rotating element and the casing to the bearing.
The shaft 8 may be formed with a shoulder 19 adapted to be engaged by a retainer 20 in the form ofa plug mounted on a spring-clip 21 and inserted through a hole 22 in the shaft bearing. When the plug 20 is so inserted the spring-clip 21 encircles the bearing 14 and rests in a suitable groove 23 provided therefor. The shaft is thus removab-ly retained in its hearing. In order to remove the same, it is only necessary to disengage the clip 21 and remove the plug 20, after which the shaft may be slipped down- Wardly, Figure 1, out of the bearing 14.
It will be clear from the foregoing description that this invention accomplishes its objects. Means are provided for maintaining an effective seal between the rotatable pumping element and the casing Wall so as to prevent the fluid from leaking past said element and to the shaft bearing. This is accomplished by providing a flexible connection between the shaft and said element in order to permit the latter to adjust itself angularly with respect to the shaft, so as to maintain its seat against the casing wall. A yielding pressure is provided to maintain the element against its seat. The driving connection is at the same time such as to maintain the rotatable element radially in alinement.
It is obvious that various changes may be made in details of construction without departing from the spirit of this invention; it is, therefore, to be understood that this in- VGIIJtlOIl is not to be limited to the specific details shown and described.
Having thus described the invention, what is claimed is:
1,. A rotary pump comprising, a casing, an element rotatable in said casing, a shaft having a loose driving connection with said element, and means for holding said element against the shaft end of said casing.
2. A rotary pump comprising, a casing, an element rotatable in said casing, a shaft, means for holding said element against the shaft end of said casing, and a driving connection between said shaft and said element adapted to permit free seating of said element.
3. A rotary pump comprising, a casing, an element rotatable in said casing, a shaft having a loose driving connection with said element, means for holding said shaft, and means for seating said element against the shaft end of said casing.
4. A rotary pump comprising, a casing, a shaft having a bearing in said casing, a rotatable element adapted to seat against the shaft bearing and having a loose driving connection with said shaft, and means for holding said element against its seat.
5. A rotary pump comprising, a casing,
a shaft, a rotatable element adapted to seat against the shaft end of said casin and having a loose driving connection wisaid shaft, and means for yieldingly holding said element against its seat.
In testimony whereof I afiix my signature this 21st day of Dec, 1923.
EDWIN L. RELLER.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US688293A US1541435A (en) | 1924-01-24 | 1924-01-24 | Rotary pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US688293A US1541435A (en) | 1924-01-24 | 1924-01-24 | Rotary pump |
Publications (1)
Publication Number | Publication Date |
---|---|
US1541435A true US1541435A (en) | 1925-06-09 |
Family
ID=24763848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US688293A Expired - Lifetime US1541435A (en) | 1924-01-24 | 1924-01-24 | Rotary pump |
Country Status (1)
Country | Link |
---|---|
US (1) | US1541435A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE749529C (en) * | 1938-12-22 | 1944-11-30 | Gear pump as a gasoline injection pump for internal combustion engines | |
US2650754A (en) * | 1949-01-12 | 1953-09-01 | Ronnoco Exp Dev Company Ltd | Compressor |
US3028811A (en) * | 1959-05-28 | 1962-04-10 | Du Pont | Gear key |
DE2912104A1 (en) * | 1978-03-27 | 1979-10-11 | Sundstrand Corp | FASTENING DEVICE BETWEEN DRIVE SHAFT AND GEAR OF A GEAR PUMP |
US5391068A (en) * | 1994-02-15 | 1995-02-21 | Eaton Corporation | Gear pump |
US20040105771A1 (en) * | 2002-10-28 | 2004-06-03 | Soqi Kabushiki Kaisha | Gear pump and method of making same |
US20220069552A1 (en) * | 2020-08-27 | 2022-03-03 | TE Connectivity Services Gmbh | Cutting arm for a cable preparation machine |
-
1924
- 1924-01-24 US US688293A patent/US1541435A/en not_active Expired - Lifetime
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE749529C (en) * | 1938-12-22 | 1944-11-30 | Gear pump as a gasoline injection pump for internal combustion engines | |
US2650754A (en) * | 1949-01-12 | 1953-09-01 | Ronnoco Exp Dev Company Ltd | Compressor |
US3028811A (en) * | 1959-05-28 | 1962-04-10 | Du Pont | Gear key |
DE2912104A1 (en) * | 1978-03-27 | 1979-10-11 | Sundstrand Corp | FASTENING DEVICE BETWEEN DRIVE SHAFT AND GEAR OF A GEAR PUMP |
US4171939A (en) * | 1978-03-27 | 1979-10-23 | Sundstrand Corporation | Arrangement for mounting a gear on a shaft |
US5391068A (en) * | 1994-02-15 | 1995-02-21 | Eaton Corporation | Gear pump |
US20040105771A1 (en) * | 2002-10-28 | 2004-06-03 | Soqi Kabushiki Kaisha | Gear pump and method of making same |
US6991442B2 (en) * | 2002-10-28 | 2006-01-31 | Soqi Kabushiki Kaisha | Gear pump and method of making same |
US20220069552A1 (en) * | 2020-08-27 | 2022-03-03 | TE Connectivity Services Gmbh | Cutting arm for a cable preparation machine |
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