WO2015048984A1 - Zahnradpumpe mit verbessertem pumpeneinlauf - Google Patents
Zahnradpumpe mit verbessertem pumpeneinlauf Download PDFInfo
- Publication number
- WO2015048984A1 WO2015048984A1 PCT/EP2013/070394 EP2013070394W WO2015048984A1 WO 2015048984 A1 WO2015048984 A1 WO 2015048984A1 EP 2013070394 W EP2013070394 W EP 2013070394W WO 2015048984 A1 WO2015048984 A1 WO 2015048984A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gear pump
- pump according
- gears
- wall
- gear
- Prior art date
Links
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
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/001—Pumps for particular liquids
- F04C13/002—Pumps for particular liquids for homogeneous viscous liquids
-
- 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
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
-
- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/084—Toothed wheels
-
- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
-
- 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
- F04C2210/00—Fluid
- F04C2210/40—Properties
- F04C2210/44—Viscosity
-
- 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
- F04C2240/00—Components
- F04C2240/20—Rotors
-
- 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
- F04C2240/00—Components
- F04C2240/50—Bearings
-
- 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
- F04C2250/00—Geometry
- F04C2250/10—Geometry of the inlet or outlet
- F04C2250/101—Geometry of the inlet or outlet of the inlet
-
- 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
- F04C2250/00—Geometry
- F04C2250/20—Geometry of the rotor
Definitions
- the present invention relates to a gear pump according to the preamble of claim 1 and a use of the gear pump.
- Gear pumps consist essentially of a pair of intermeshing gears, which are enclosed by a housing and from which laterally each arranged about the longitudinal axis journals protrude, in
- gear pumps Since gear pumps have a conveyor-stable characteristic, they are particularly well suited for the transport of
- the bearing capacity depends on the strength of the bearing pin and in particular the diameter of the bearing pin.
- a gear pump with maximum bearing capacity is known from EP-1 790 854 AI of the same applicant.
- the journals at least over part of its axial extent a bearing journal diameter., Which is in the range of 90% to 100% of a root diameter of the toothing of the associated gear.
- Extension has a journal diameter, which is in the range of 90% to 100% of a root diameter of the toothing of the associated gear.
- Gear pump according to the invention is characterized in that a tooth width b is at least twice as large as a center distance a of the longitudinal axes, wherein the
- Gear width b is an extension of the gears parallel to the longitudinal axes.
- a variant of the inventive gear pump is that the tooth width b at most twice the center distance a plus one
- Gear pump are that the tooth width b is in a range whose lower limit of twice the center distance a and the upper limit of the double
- Gear pump are that the tooth width b is in a range whose lower limit corresponds to twice the center distance a plus twice the tooth height h of the gears and the upper limit of twice the center distance a plus four times the tooth height h of the gears.
- Gear pump consist in that the tooth width b corresponds to twice the center distance a plus a threefold tooth height h of the gears. Yet further embodiments of the inventive gear pump are that the suction side
- Transition region is provided with a wall, seen in the conveying direction of a circular
- Inlet cross-section leads to a pump inlet on an upper toothing plane, wherein the transition region a Has expansion H in the conveying direction of the pumping medium, wherein the expansion H is defined as follows: b V2-1
- Transition region is and is defined as the maximum angle between the conveying direction of pumping medium and a connecting line, by the connection of a
- Opening angle ⁇ is in the range of 20 ° to 50 °
- Gear pump are that a pump inlet on the upper toothing plane is rectangular.
- Gear pump are that the pump inlet on the upper toothing plane is square.
- Gear pump consist of a wall in the
- Gear pump consist of a wall in the
- Transition region in predetermined, running through a central axis cutting planes piecewise rectilinear.
- Gear pump consist of a wall in the
- Transition region in predetermined, extending through a central axis cutting planes piecewise steadily and / or piecewise rectilinear.
- Gear pump consist in that in the sectional planes extending tangents include a maximum angle of ⁇ 10 ° with the respective opening angle ⁇ .
- the present invention relates to a use of the gear pump according to one or more of the abovementioned embodiments for conveying a highly viscous polymer melt.
- Fig. 1 is a known gear with journals, in
- Fig. 3 is an inventive gear pump in a
- Fig. 4 shows a detail shown in detail
- Fig. 1 shows a gear 1 for a gear pump with teeth 20 and bearing journals 5 and 6,. wherein a second gear with the respective bearing pin as well as the fixed components of the gear pump - such as housing, plain bearings,
- the journals 5 and 6 have - at least over part of their axial extent - a
- Bearing diameter D L on which is in the range of 90% to 100% of a root diameter D F of the gear 1.
- this also applies to the bearing pin of the second gear, not shown in Fig. 1.
- the teeth 20 of the gear 1 have toothed end faces 22, of which in Fig. 1, only the bearing pin. 6
- Voltages have voltage-optimized transitions 17.
- the voltage-optimized transitions 17 consist for example of one or more tangentially converging Radii extending to the surface of the journal 6.
- Fig. 2 shows a section through tooth gaps of the gear 1 and through a longitudinal axis 9 of the bearing pin 5, 6 and the gear 1. It can be clearly seen that the
- Bearing diameter D L corresponds approximately to the root diameter D F , so that on. the bearing journal 6 facing surface of the gear 1 is substantially only the
- Fig. 3 shows a pump inlet on the suction side in a plan view (upper half of Fig. 3) and a cross section through the gear pump perpendicular to the longitudinal axes 9 and 10 (lower half of Fig. 3).
- the inlet 23 may be in the form of a tube leading to a reactor vessel, or Be reactor tank itself, for example, has conically extending walls.
- Fig. 3 is such a line under an inlet angle ß tapered inlet 23 ⁇ indicated by dashed lines.
- the height of the pump inlet is designated H, which corresponds to the distance from a plane just above the teeth of the gears 1, 1 ⁇ (hereinafter referred to as the upper toothing plane 24) and the lower end of the inlet 23.
- This pump inlet is a belonging to the gear pump or its housing
- the wall 26 of the transition region 25 is further characterized by a point A, which lies on the toothing plane 24, and a point B, the upper end of the wall 26th
- the transitional region 25 has a maximum opening angle from which the height H depends is wherein the height H increases, if one reduces the maximum opening angle ⁇ .
- Inlet pressure loss - also called NPSH - is achieved. This is achieved if the aforementioned transition region 25 or the wall 26 between the upper toothing plane 24 and the end region of the inlet 23 is formed as simple and uniform as possible. In particular, the should
- Gearing 24 as possible square, preferably square, selected, the condition of
- a first variant of the inventive gear pump is obtained when the tooth width b at least twice as large as an axial distance a of the axes 9 and 10, wherein the tooth width b is an extension of the gears 1, 1 ⁇ parallel to the axes 9 and 10.
- the tooth width b is limited by a maximum, which results from the double center distance a plus six times a tooth height h of the gears 1, l.
- Gear width b is, namely:
- Aperture angle ⁇ in the range of 20 ° to 50 °, in particular equal to 40 °, chosen, then the height H of the decreases
- Embodiment of the present invention in the sense of the above statements on the height H not only a very low inlet pressure loss (NPSH) is obtained, but it is also a short transition area 25th
- Points A and B is a straight-line connection, as provided in an embodiment of the present invention.
- this straight course of the wall 26 in the transition region 25 is conceivable in further embodiments of the present invention that the position of the two points A and B as
- connection points (start point and end point) remain the same however, the course between these points A and B can be arbitrary to a certain extent. For example, it is provided in further embodiments that between the points A and B, the course of the wall 26 is only piecewise in a straight line.
- Fig. 4 shows a possible embodiment in which the connection between the points A and B in turn by the
- Opening angle ⁇ is defined, the actual course of the wall 26 but over a point C, which lies between the points A and B. The actual
- the two angles ⁇ and ⁇ can be within one
- Angle range of ⁇ 10 ° preferably within an angular range + 5 °, where it is not necessary that both angles ⁇ and ⁇ are the same size. Rather, the individual values of the angles ⁇ and ⁇ are chosen such that the point C at a suitable location
- connection between the points A and B - and thus the wall 26 - run piecewise in a straight line.
- a continuously curved line between the points A and B or a sectionally continuously curved one is also conceivable Line in combination with piecewise rectilinear sections, where then a tangent at any point of the curved line the above
- Criteria to the angle size ⁇ and ⁇ between the tangent and the straight line connecting the points A and B should also meet.
- Opening angle ⁇ is smaller in such deviating sectional planes. If the cutting plane is laid through the point D, the opening angle ⁇ is equal to zero. For this reason, the opening angle ⁇ is always a maximum angle, which at a certain
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020167011381A KR101704368B1 (ko) | 2013-10-01 | 2013-10-01 | 개선된 펌프 유입구를 가지는 기어 펌프 |
CN201380080893.9A CN105745448B (zh) | 2013-10-01 | 2013-10-01 | 具有改进的泵入口的齿轮泵 |
CH00411/16A CH710429B1 (de) | 2013-10-01 | 2013-10-01 | Zahnradpumpe mit Pumpeneinlauf. |
DE112013007402.8T DE112013007402A5 (de) | 2013-10-01 | 2013-10-01 | Zahnradpumpe mit verbessertem Pumpeneinlauf |
JP2016520019A JP6140893B2 (ja) | 2013-10-01 | 2013-10-01 | 改良されたポンプ吸入口を有するギヤポンプ |
PCT/EP2013/070394 WO2015048984A1 (de) | 2013-10-01 | 2013-10-01 | Zahnradpumpe mit verbessertem pumpeneinlauf |
US15/026,302 US9528515B2 (en) | 2013-10-01 | 2013-10-01 | Gear pump with improved pump inlet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2013/070394 WO2015048984A1 (de) | 2013-10-01 | 2013-10-01 | Zahnradpumpe mit verbessertem pumpeneinlauf |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015048984A1 true WO2015048984A1 (de) | 2015-04-09 |
Family
ID=49578256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/070394 WO2015048984A1 (de) | 2013-10-01 | 2013-10-01 | Zahnradpumpe mit verbessertem pumpeneinlauf |
Country Status (7)
Country | Link |
---|---|
US (1) | US9528515B2 (de) |
JP (1) | JP6140893B2 (de) |
KR (1) | KR101704368B1 (de) |
CN (1) | CN105745448B (de) |
CH (1) | CH710429B1 (de) |
DE (1) | DE112013007402A5 (de) |
WO (1) | WO2015048984A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10464098B2 (en) * | 2016-09-08 | 2019-11-05 | Nordson Corporation | Remote metering station |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2531726A (en) * | 1946-01-26 | 1950-11-28 | Roper Corp Geo D | Positive displacement rotary pump |
GB769895A (en) * | 1955-06-27 | 1957-03-13 | Isidore Nathan Shenker | Improvements in and relating to gear pumps for use in boreholes |
EP1790854A1 (de) | 2005-11-28 | 2007-05-30 | Maag Pump Systems Textron AG | Zahnradpumpe |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH412585A (fr) * | 1965-01-11 | 1966-04-30 | Alphonse Grosjean Otto | Pompe hydraulique à pistons rotatifs |
DE1941673A1 (de) * | 1969-08-16 | 1971-02-18 | Barmag Barmer Maschf | Zahnradpumpe mit keilfoermig verjuengten Einzugskammern |
US3837768A (en) * | 1973-08-31 | 1974-09-24 | Maag Zahnraeder & Maschinen Ag | Gear pump for highly viscous media |
US4137023A (en) * | 1975-09-03 | 1979-01-30 | Union Carbide Corporation | Low energy recovery compounding and fabricating apparatus for plastic materials |
JPH0744783Y2 (ja) * | 1987-12-10 | 1995-10-11 | 株式会社島津製作所 | ギアポンプ |
DE4200883C1 (de) * | 1992-01-15 | 1993-04-15 | Siegfried A. Dipl.-Ing. 7960 Aulendorf De Eisenmann | |
EP0595764B1 (de) * | 1992-10-29 | 1997-10-29 | Sulzer Chemtech AG | Zahnradpumpe |
US5545014A (en) * | 1993-08-30 | 1996-08-13 | Coltec Industries Inc. | Variable displacement vane pump, component parts and method |
GB2311334A (en) * | 1996-03-21 | 1997-09-24 | Ultra Hydraulics Ltd | Gear pump with two out of phase gears on a common shaft. |
WO2000077419A1 (fr) * | 1999-06-14 | 2000-12-21 | Wei Xiong | Engrenage et appareil pour fluide a double engrenage |
CN2854143Y (zh) * | 2005-08-23 | 2007-01-03 | 胡启德 | 自动调整密合性的齿轮泵浦 |
CN101216031A (zh) * | 2007-12-26 | 2008-07-09 | 王丽 | 一种高压齿轮油泵 |
DE102010007136B4 (de) * | 2010-02-05 | 2012-04-05 | Abb Technology Ag | Schaltanlage, insbesondere Schaltanlage für eine Offshore-Windenergieanlage |
CN202338484U (zh) * | 2011-08-30 | 2012-07-18 | 广州泰旺精密机械有限公司 | 齿轮泵泵体改良结构 |
-
2013
- 2013-10-01 CH CH00411/16A patent/CH710429B1/de unknown
- 2013-10-01 KR KR1020167011381A patent/KR101704368B1/ko active IP Right Grant
- 2013-10-01 JP JP2016520019A patent/JP6140893B2/ja active Active
- 2013-10-01 CN CN201380080893.9A patent/CN105745448B/zh active Active
- 2013-10-01 WO PCT/EP2013/070394 patent/WO2015048984A1/de active Application Filing
- 2013-10-01 DE DE112013007402.8T patent/DE112013007402A5/de active Pending
- 2013-10-01 US US15/026,302 patent/US9528515B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2531726A (en) * | 1946-01-26 | 1950-11-28 | Roper Corp Geo D | Positive displacement rotary pump |
GB769895A (en) * | 1955-06-27 | 1957-03-13 | Isidore Nathan Shenker | Improvements in and relating to gear pumps for use in boreholes |
EP1790854A1 (de) | 2005-11-28 | 2007-05-30 | Maag Pump Systems Textron AG | Zahnradpumpe |
Also Published As
Publication number | Publication date |
---|---|
KR20160073974A (ko) | 2016-06-27 |
CH710429B1 (de) | 2016-12-30 |
CN105745448B (zh) | 2017-09-22 |
JP6140893B2 (ja) | 2017-06-07 |
DE112013007402A5 (de) | 2016-07-14 |
JP2016536502A (ja) | 2016-11-24 |
CN105745448A (zh) | 2016-07-06 |
US20160238005A1 (en) | 2016-08-18 |
KR101704368B1 (ko) | 2017-02-07 |
US9528515B2 (en) | 2016-12-27 |
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