KR101715677B1 - pressure gear pump - Google Patents
pressure gear pump Download PDFInfo
- Publication number
- KR101715677B1 KR101715677B1 KR1020150131760A KR20150131760A KR101715677B1 KR 101715677 B1 KR101715677 B1 KR 101715677B1 KR 1020150131760 A KR1020150131760 A KR 1020150131760A KR 20150131760 A KR20150131760 A KR 20150131760A KR 101715677 B1 KR101715677 B1 KR 101715677B1
- Authority
- KR
- South Korea
- Prior art keywords
- fluid
- rotation shaft
- driven
- gear
- driving
- Prior art date
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Classifications
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- 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
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- 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
- F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
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- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids 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
- F04C18/18—Rotary-piston pumps specially adapted for elastic fluids 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
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- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0021—Systems for the equilibration of forces acting on the pump
-
- 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
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/04—Force
- F04C2270/042—Force radial
- F04C2270/0421—Controlled or regulated
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
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a hydraulic gear pump capable of allowing a fluid to flow out and flowed by rotation of a plurality of gear teeth, and more particularly to a hydraulic gear pump that prevents eccentric rotation of a rotary shaft, And a part of the fluid discharged in a direction corresponding to the pressing force applied to the rotating shaft due to the pressure of the discharged fluid is transferred to support the load applied to the rotating shaft, thereby extending the service life.
Generally, a gear pump is constituted by a structure in which a driving gear and a driven gear, which are mutually engaged with each other, are arranged inside a casing. At this time, the driving gear drives the driven gear to engage with each other and rotate, resulting in a pumping action.
When the teeth of the gear are separated from each other at the suction port side, the suction chamber is formed between the gear tooth and the teeth. Since the volume of the suction chamber is increased by the volume occupied by one of them, The fluid is pushed in the direction of the discharge port by being interposed between the groove and the outer periphery of the casing. In more detail, a gear pump includes two drive gears meshed with each other and a pump gear composed of a follower gear, into a casing that is in contact with the pump gear, and rotates the gear so that the space formed between the groove of the teeth and the peripheral wall And a structure of a pumping part for flowing the fluid through the movement.
The following shows the structure of a general gear pump.
FIG. 1 is a sectional side view showing a gear pump according to a conventional technique, and FIG. 2 is a front sectional view showing a gear pump according to a conventional technique.
1 and 2, a
However, in the conventional gear pump, since one driving gear and one driven gear are engaged with each other through meshing, there arises a problem that the load is eccentrically exerted only on one side where the teeth of the gear are meshed with each other. Therefore, in the conventional gear pump, there is a problem of eccentric load in which the load is eccentric to only one side where the teeth of the gears are meshed with each other, so that problems such as breakage or damage of the teeth occur, Which is a cause of degradation.
In addition, since the conventional gear pump has a structure in which one driving gear and one driven gear are engaged with each other through meshing, there is a problem that the suction and discharge of the fluid due to the driving of the gear are performed only in one direction, When the driven rotor is made of a metal material, when a liquid or a foodstuff which requires high purity due to abrasion or damage of the gear is to be sent out, impurities generated from wear of the gear are mixed, which may cause a lot of problems .
SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to prevent the eccentric rotation of the rotary shaft by supporting a part of the fluid discharged in the direction opposite to the eccentric load acting on the rotary shaft of the gear, And to provide a hydraulic gear pump that can be used as a hydraulic pump.
Further, according to the present invention, a plurality of gear rotating shafts can be rotated in parallel with each other due to a uniform load applied to them without deviating from the concentricity, thereby preventing breakage or breakage of the gear teeth, .
The hydraulic gear pump of the present invention includes a
The
The driving rotation
In order to prevent eccentric rotation of a gear due to the pressure of a discharged fluid, a part of a fluid discharged in a direction opposite to the pressure of the fluid is transferred to support the rotation shaft, thereby preventing the rotation shaft from eccentrically rotating The durability of the gear teeth can be improved.
In addition, according to the present invention, a uniform load is applied to a plurality of gear rotating shafts so that a plurality of gear rotating shafts are parallel to each other, thereby preventing breakage or breakage of the gear teeth and extending the life expectancy of the gear pump. And the efficiency of discharge and input / output of the pump can be improved.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side cross-sectional view showing a gear pump according to a conventional technique. FIG.
2 is a front sectional view showing a gear pump according to a conventional technique.
3 is a perspective view showing the overall structure of the hydraulic gear pump of the present invention.
4 is an exploded perspective view showing the main internal structure of the hydraulic gear pump of the present invention.
5 is a cross-sectional view showing the operating state of the hydraulic gear pump of the present invention and the pressure direction of the discharged fluid.
6 is a cross-sectional view showing the configuration of a fluid path and a guide ring for supplying fluid to a drive rotation shaft and a driven rotation shaft of the present invention;
7 is a schematic view showing a pressure distribution of a fluid supplied to the guide ring of the present invention.
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 3 is an exploded perspective view showing the internal structure of the hydraulic gear pump of the present invention, FIG. 5 is a perspective view showing the operation state of the hydraulic gear pump of the present invention, FIG. 6 is a cross-sectional view showing the configuration of a fluid path and a guide ring for supplying fluid to the drive rotation shaft and the driven rotation shaft of the present invention, and FIG. 7 is a cross-sectional view showing the pressure distribution Fig.
Referring to FIG. 3, the hydraulic gear pump of the present invention has a
The
Referring to FIGS. 4 and 5, a
Referring to FIGS. 4 and 5, a driven
A
3 to 5, an
Further, a
Referring to FIG. 5, the
At this time, if a part of the fluid located in the
4 and 6, a driving rotation
At this time, a
Referring to FIG. 6, a
At this time, a
That is, since the
Referring to FIG. 7, the operation of the
On the other hand, when the
The hydraulic gear pump of the present invention constructed as described above prevents the eccentric rotation of the driving
100: Case 110: Driving rotary shaft insertion groove
120: a driven rotary shaft insertion groove 130:
200: drive rotation shaft 210: first gear
300: driven rotor shaft 310: second gear tooth
400:
600: guide ring 610: fluid receiving groove
Claims (3)
A drive rotation shaft 200, one side of which is exposed to the outside of the case 100 and the other side of which is located inside the case 100, and which receives power from an exposed side and rotates;
A first gear teeth 210 installed on a side surface of the driving rotation shaft 200 and positioned in the accommodation space S;
A driven rotary shaft 300 parallel to the driving rotary shaft 200 and rotatably installed in the case 100;
A second gear tooth 310 meshing with the first gear tooth 210 and installed on a side surface of the driven rotation shaft 300 to rotate the driven rotation shaft 300 as the drive rotation shaft 200 rotates;
An inlet pipe 400 formed at one side of the case 100 and sucking fluid as the first gear teeth 210 and the second gear teeth 310 are engaged and rotating;
When the fluid introduced into the inflow pipe 400 is transferred according to the rotation of the first gear teeth 210 and the second gear teeth 310, the inflow pipe 400 is opened to discharge the fluid to the outside of the case 100, And a discharge pipe (500) symmetrical with the discharge pipe and guiding the fluid,
The fluid is discharged in a direction opposite to the pressure direction P1 of the fluid so as to prevent eccentric rotation of the driving rotary shaft 200 and the driven rotary shaft 300 due to the pressure of the fluid transferred to the discharge pipe 500, Wherein a part of the fluid located in the pipe 500 is supplied to the drive rotation shaft 200 and the driven rotation shaft 300 to support the drive rotation shaft 200 and the driven rotation shaft 300.
In the case 100, a drive rotation shaft insertion groove 110 into which the other end of the drive rotation shaft 200 is inserted and a plurality of driven rotation shaft insertion grooves 120 (not shown) into which both ends of the driven rotation shaft 300 are inserted, ) And
One side of the discharge pipe 500 communicates with the discharge pipe 500 and the other side of the discharge pipe 500 communicates with the drive rotation shaft insertion groove 110 and the driven rotation shaft insertion groove 120, And the fluid passage (130) is divided so that the fluid passage (130) is divided.
The driving rotation axis insertion groove 110 and the driven rotation axis insertion groove 120 are formed with a guide ring 600 into which the driving rotation axis 200 and the driven rotation axis 300 are inserted,
The inner surface of the guide ring 600 is provided with an elastic member for increasing the area of the fluid contacting the side surfaces of the driving rotation axis 200 and the driven rotation axis 300 to stably support the driving rotation axis 200 and the driven rotation axis 300. [ And a fluid receiving groove (610) communicating with the other side of the fluid transfer path (130) to be inserted to a predetermined depth is formed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150131760A KR101715677B1 (en) | 2015-09-17 | 2015-09-17 | pressure gear pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150131760A KR101715677B1 (en) | 2015-09-17 | 2015-09-17 | pressure gear pump |
Publications (1)
Publication Number | Publication Date |
---|---|
KR101715677B1 true KR101715677B1 (en) | 2017-03-15 |
Family
ID=58403026
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020150131760A KR101715677B1 (en) | 2015-09-17 | 2015-09-17 | pressure gear pump |
Country Status (1)
Country | Link |
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KR (1) | KR101715677B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20200067355A (en) | 2018-12-04 | 2020-06-12 | (주)대현하이드로릭스 | Gear pump |
KR20210130481A (en) | 2020-04-22 | 2021-11-01 | 김범열 | a fluid pump used in very low temperature |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0530482U (en) * | 1991-09-28 | 1993-04-23 | 株式会社島津製作所 | Gear pump |
JPH10122161A (en) * | 1996-10-17 | 1998-05-12 | Koyo Seiko Co Ltd | Gear pump |
JPH10339278A (en) * | 1997-06-04 | 1998-12-22 | Kobe Steel Ltd | Gear pump for molten resin |
KR100202163B1 (en) | 1991-01-23 | 1999-06-15 | 오토 미하엘 밀리처 | Rotary pump |
KR20080099118A (en) * | 2007-05-07 | 2008-11-12 | 나종갑 | Gear pump |
KR20130090449A (en) | 2012-02-06 | 2013-08-14 | 주식회사 대유에스이 | Gear pump |
KR20150009973A (en) | 2013-05-30 | 2015-01-27 | 마조찌 폼페 에스피에이 | Gear pump or hydraulic gear motor with helical toothing provided with hydraulic system for axial thrust balance |
-
2015
- 2015-09-17 KR KR1020150131760A patent/KR101715677B1/en active IP Right Grant
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100202163B1 (en) | 1991-01-23 | 1999-06-15 | 오토 미하엘 밀리처 | Rotary pump |
JPH0530482U (en) * | 1991-09-28 | 1993-04-23 | 株式会社島津製作所 | Gear pump |
JPH10122161A (en) * | 1996-10-17 | 1998-05-12 | Koyo Seiko Co Ltd | Gear pump |
JPH10339278A (en) * | 1997-06-04 | 1998-12-22 | Kobe Steel Ltd | Gear pump for molten resin |
KR20080099118A (en) * | 2007-05-07 | 2008-11-12 | 나종갑 | Gear pump |
KR20130090449A (en) | 2012-02-06 | 2013-08-14 | 주식회사 대유에스이 | Gear pump |
KR20150009973A (en) | 2013-05-30 | 2015-01-27 | 마조찌 폼페 에스피에이 | Gear pump or hydraulic gear motor with helical toothing provided with hydraulic system for axial thrust balance |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20200067355A (en) | 2018-12-04 | 2020-06-12 | (주)대현하이드로릭스 | Gear pump |
KR20210130481A (en) | 2020-04-22 | 2021-11-01 | 김범열 | a fluid pump used in very low temperature |
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