CN107165820A - A kind of crescent gear pump - Google Patents
A kind of crescent gear pump Download PDFInfo
- Publication number
- CN107165820A CN107165820A CN201710454996.7A CN201710454996A CN107165820A CN 107165820 A CN107165820 A CN 107165820A CN 201710454996 A CN201710454996 A CN 201710454996A CN 107165820 A CN107165820 A CN 107165820A
- Authority
- CN
- China
- Prior art keywords
- crescent moon
- subplate
- crescent
- gear
- mainboard
- 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.)
- Pending
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
- 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
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/101—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with a crescent-shaped filler element, located between the inner and outer intermeshing members
-
- 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
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The present invention relates to gear pump technical field, more particularly to a kind of crescent gear pump.The pump includes the pump housing, ring gear and gear shaft, gear shaft is meshed in a circumferential sectors with ring gear, make the gap that moon shape is there is between its gear shaft and ring gear, crescent moon mainboard and crescent moon subplate are set in gap, the Inner arc of crescent moon mainboard is close to gear shaft, the external arc of crescent moon subplate is close to ring gear, the present invention is under the promotion of pressure, crescent moon mainboard is close to gear shaft all the time, crescent moon subplate is close to ring gear all the time, even if inside engaged gear pump operation for a period of time after, due to the effect of pressure, abrasion can be also compensated, crescent gear pump is effectively guaranteed reliably to work, compensating groove is capable of the left and right sides hydraulic oil of effective UNICOM's crescent moon subplate, make crescent moon subplate no matter at which kind of position, its pressure at both sides is all equal, crescent moon subplate is set to be constantly in stress balance state, so as to solve the fracture of crescent moon subplate, the problem of noise is big.
Description
Technical field
The present invention relates to gear pump technical field, more particularly to a kind of crescent gear pump.
Background technology
At present, conventional crescent gear pump generally includes the pump housing and external gear and internal gear in the pump housing, external tooth
Wheel and internal gear are meshed against one side, and another side is then separated by swing link.Swing link is by between external gear and internal gear
Non- mesh regional is divided into two spaces, and the space of two gear drop out of gears is oil suction area, and the space for tending to engagement is laminated oil zone.External tooth
Wheel is typically connected or is formed integrally with power transmission shaft, and drives rotation by drive device.When inside engaged gear pump work, external tooth
Wheel rotates at a high speed and drives internal gear to rotate, and during external gear and internal gear transmission, the oil suction area of two gear drop out of gears is close
Spatial volume increase is closed, negative pressure is formed, fluid is sucked from the oil inlet on the pump housing, and two teeth tend to the laminated oil zone confined air of engagement
Between smaller volume, by fluid from the pump housing oil-out extrude.
In use, part inevitably weares and teares crescent gear pump, causes the damage of product.And easily
There is the problem of crescent moon subplate is broken, gear pump noise is big.
The content of the invention
In view of the deficienciess of the prior art, the present invention provides a kind of crescent gear pump so that crescent gear pump exists
During use, what parts were avoided weares and teares, and protection crescent moon subplate is not easy to break, solve gear pump noise asking greatly
Topic.
The present invention to achieve the above object and the technical scheme taken is：
A kind of crescent gear pump, the pump includes the pump housing and its is arranged on the ring gear and gear shaft being meshed in the pump housing, described
Gear shaft be prejudicially arranged in ring gear, and described gear shaft is meshed in a circumferential sectors with ring gear, makes
Existed between gear shaft and ring gear described in it and crescent moon mainboard and crescent moon pair are set in the gap of moon shape, described gap
Plate, the Inner arc of described crescent moon mainboard is close to gear shaft, and the external arc of crescent moon subplate is close to ring gear, described gear shaft
Both sides set side plate respectively up and down, first closing space for being formed the side plate described in it, crescent moon mainboard, crescent moon subplate
Body, sets elastic packing mechanism between described crescent moon mainboard and crescent moon subplate, described elastic packing mechanism is by its crescent moon pair
The binding face arc section of plate and crescent moon mainboard is at least divided into 3 sections, makes at least to have between its tooth subplate and crescent moon mainboard one the
The epimere of two sealing space bodies, crescent moon subplate and crescent moon mainboard passes through the neutral between crescent moon mainboard and crescent moon subplate and higher-pressure region
Communicate, the second sealing space body at least one side side plate by setting drainage mechanism to be communicated with higher-pressure region.
As a further improvement, setting compensating groove on crescent moon subplate in described epimere region.
As a further improvement, described elastic packing mechanism, which includes setting between crescent moon mainboard and crescent moon subplate, places piece
Flat spring and seal bar are set in the space of spring and seal bar, described space.
As a further improvement, described flat spring and seal bar are by crescent moon subplate and the binding face arc section of crescent moon mainboard
It is divided into I section, II section, III section.
As a further improvement, communicated in I section of region by the neutral between crescent moon mainboard and crescent moon subplate with higher-pressure region,
Described drainage mechanism, which includes setting on side plate, sets logical oil groove on crescent moon subplate in eyebrow groove and II section of closed area.
The present invention is under the promotion of pressure, and crescent moon mainboard is close to gear shaft all the time, and crescent moon subplate is close to ring gear all the time, i.e.,
After making inside engaged gear pump operation for a period of time, due to the effect of pressure, abrasion can be also compensated, and be effectively guaranteed interior nibble
Close gear pump reliably to work, described compensating groove is capable of the left and right sides hydraulic oil of effective UNICOM's crescent moon subplate, makes crescent moon
Subplate is no matter at which kind of position, and its pressure at both sides is all equal, crescent moon subplate is constantly in stress balance state, so as to solve
The problem of crescent moon subplate is broken, noise is big.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is the structural representation of crescent moon subplate of the present invention.
Fig. 3 is the structural representation of side plate of the present invention.
Embodiment
The embodiment to the present invention makes a detailed explanation below in conjunction with the accompanying drawings.
As Figure 1-3, a kind of crescent gear pump, it is interior that the pump includes that the pump housing 1 and its be arranged on is meshed in the pump housing
Gear ring 3 and gear shaft 2, described gear shaft 2 are prejudicially arranged in ring gear 3, and described gear shaft 2 is a circumference area
Duan Zhongyu ring gears 3 are meshed, and make the gap that moon shape is there is between the gear shaft 2 described in it and ring gear 3, described gap
Interior setting crescent moon mainboard 4 and crescent moon subplate 5, the Inner arc of described crescent moon mainboard 4 are close to gear shaft 2, crescent moon subplate 5 it is cylindrical
Arc is close to ring gear 3, and the both sides up and down of described gear shaft 2 set side plate 9 respectively, make side plate 9 described in it, crescent moon mainboard 4,
The first closing space body that crescent moon subplate 5 is formed, sets elasticity close between described crescent moon mainboard 4 and crescent moon subplate 5
Sealing mechanism, described elastic packing mechanism, which includes setting between crescent moon mainboard 4 and crescent moon subplate 5, places flat spring 6 and seal bar 7
Space, flat spring 6 and seal bar 7 are set in described space；Described flat spring 6 and seal bar 7 are by crescent moon subplate 5 and the moon
The binding face arc section of tooth mainboard 4 is divided into I section, II section, III section；It is to pass through in the second sealing space body, I section of region to make its II section
Neutral S between crescent moon mainboard 4 and crescent moon subplate 5 is communicated with higher-pressure region B, and II section of closed area passes through at least one side side plate 9
Setting in eyebrow groove 9.1 and II section of closed area sets logical oil groove 5.1 to be communicated with higher-pressure region B on crescent moon subplate.
Crescent gear pump operation principle is as follows：The rotate counterclockwise under the drive of prime mover of gear shaft 2, gear shaft 2 revolves
Also the rotation of ring gear 3 has been driven while turning.The P mouths direction of the pump housing 3 is rotated to from the T mouths direction of the pump housing 3 in gear shaft
During, the closing space volume formed by gear shaft 2, ring gear 3 and side plate 9, crescent moon mainboard 4, crescent moon subplate 5 by
Gradual change is small.Therefore hydraulic oil enters after low-pressure area A after the T mouths of the pump housing 1 and the logical hydraulic fluid port of ring gear 3.1, is following gear
Axle 2 and ring gear 3 continue during rotating, and are gradually compressed, pressure gradually rises, are finally reached higher-pressure region B, from the pump housing 1
P mouths flow away.
Between crescent moon mainboard 4 and crescent moon subplate 5, the space for placing flat spring and seal bar is devised.Flat spring and close
The binding face arc section of crescent moon subplate 5 and crescent moon mainboard 4 divide into three sections by envelope rod：I section, II section, III section.I section passes through neutral S
Communicated with higher-pressure region, higher-pressure region B hydraulic oil by enter after eyebrow groove 9.1, logical oil groove 5.1 by seal bar 7, crescent moon mainboard 4,
The second sealing space body that crescent moon subplate 5 is constituted.Under the promotion of the pressure, crescent moon mainboard 4 is close to gear shaft 2, crescent moon all the time
Subplate 5 is close to ring gear 3 all the time, though inside engaged gear pump operation for a period of time after, due to the effect of pressure, abrasion can also be obtained
To compensation, it is effectively guaranteed crescent gear pump and reliably works.
Because the external arc of crescent moon subplate 5 is close to ring gear 3, in the rotary course of ring gear 3, due to the work of frictional force
With inevitably there is ring gear 3 and drive crescent moon subplate 5 to rotate, until crescent moon subplate 5 props up crescent moon mainboard 4, cause crescent moon
Neutral S between mainboard 4 and crescent moon subplate 5 disappears.When neutral S does not disappear, crescent moon subplate 5 leads to I section of the left and right sides
Neutral S UNICOMs are crossed, the pressure on both sides is equal, the stress balance of crescent moon subplate 5, after neutral S disappears, the height on the right side of crescent moon subplate 5
Force feed cannot be introduced into left side, cause the force unbalance of crescent moon subplate 5.Crescent moon subplate 5 is produced in the presence of the high-pressure of right side
Elastic deformation and vibration, so as to cause product in the process of running because vibration produces excessive noise, and ultimately result in crescent moon subplate
Fracture.
Compensating groove 10 is set on the crescent moon subplate in I section of region.The compensating groove 10 can effectively connect crescent moon subplate 5
Left and right sides hydraulic oil, make crescent moon subplate 5 no matter at which kind of position, its pressure at both sides is all equal, makes crescent moon subplate always
In stress balance state, so as to solve the problem of crescent moon subplate is broken, noise is big.
Claims (5)
1. a kind of crescent gear pump, the pump includes the pump housing and its is arranged on the ring gear and gear shaft being meshed in the pump housing, institute
The gear shaft stated prejudicially is arranged in ring gear, and described gear shaft is meshed in a circumferential sectors with ring gear,
Make to set crescent moon mainboard and crescent moon pair in the gap that there is moon shape between the gear shaft described in it and ring gear, described gap
Plate, the Inner arc of described crescent moon mainboard is close to gear shaft, and the external arc of crescent moon subplate is close to ring gear, it is characterised in that：Institute
The both sides up and down for the gear shaft stated set side plate respectively, make that the side plate described in it, crescent moon mainboard, crescent moon subplate are formed one
First closing space body, sets elastic packing mechanism, described elastic packing machine between described crescent moon mainboard and crescent moon subplate
The binding face arc section of its crescent moon subplate and crescent moon mainboard is at least divided into 3 sections by structure, is made between its tooth subplate and crescent moon mainboard extremely
There is a second sealing space body less, the epimere of crescent moon subplate and crescent moon mainboard passes through between crescent moon mainboard and crescent moon subplate
Neutral is communicated with higher-pressure region, and the second sealing space body at least one side side plate by setting drainage mechanism to be communicated with higher-pressure region.
2. a kind of crescent gear pump according to claim 1, it is characterised in that：Crescent moon pair in described epimere region
Compensating groove is set on plate.
3. a kind of crescent gear pump according to claim 1 or 2, it is characterised in that：Described elastic packing mechanism bag
Include set in the space for being set between crescent moon mainboard and crescent moon subplate and placing flat spring and seal bar, described space flat spring with
Seal bar.
4. a kind of crescent gear pump according to claim 3, it is characterised in that：Described flat spring and seal bar are by the moon
The binding face arc section of tooth subplate and crescent moon mainboard is divided into I section, II section, III section.
5. a kind of crescent gear pump according to claim 4, it is characterised in that：In I section of region by crescent moon mainboard and
Neutral between crescent moon subplate is communicated with higher-pressure region, and described drainage mechanism includes setting eyebrow groove and II section of enclosed area on side plate
Logical oil groove is set in domain on crescent moon subplate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710454996.7A CN107165820A (en) | 2017-06-16 | 2017-06-16 | A kind of crescent gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710454996.7A CN107165820A (en) | 2017-06-16 | 2017-06-16 | A kind of crescent gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107165820A true CN107165820A (en) | 2017-09-15 |
Family
ID=59820055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710454996.7A Pending CN107165820A (en) | 2017-06-16 | 2017-06-16 | A kind of crescent gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107165820A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676255A (en) * | 2017-10-20 | 2018-02-09 | 南京蒙福液压机械有限公司 | One kind has pressure compensated crescent gear pump |
| CN108412756A (en) * | 2018-04-13 | 2018-08-17 | 温州海特克动力股份有限公司 | A kind of adjustable crescent gear pump of volumetric efficiency |
| WO2019071982A1 (en) * | 2017-10-13 | 2019-04-18 | 南京蒙福液压机械有限公司 | Hydraulic internal gear pump |
| CN111102187A (en) * | 2019-12-23 | 2020-05-05 | 滁州神煜液压科技有限公司 | Internal gear pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412439A (en) * | 2002-09-28 | 2003-04-23 | 宁波华液机器制造有限公司 | Internal gear pump |
| EP1970570A2 (en) * | 2007-03-16 | 2008-09-17 | Yamada Manufacturing Co., Ltd. | Internal gear pump |
| CN103883516A (en) * | 2014-02-24 | 2014-06-25 | 江苏驰翔精密齿轮有限公司 | Fixed-displacement internal-meshing gear pump |
| CN203730305U (en) * | 2014-01-26 | 2014-07-23 | 潘光奇 | Internally-engaged gear pump |
| CN205779681U (en) * | 2016-05-10 | 2016-12-07 | 广州泰旺精密机械有限公司 | There is shimming assembly and the crescent gear pump of pressure guide hole |
| CN206860432U (en) * | 2017-06-16 | 2018-01-09 | 海特克液压有限公司 | A kind of crescent gear pump |
-
2017
- 2017-06-16 CN CN201710454996.7A patent/CN107165820A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412439A (en) * | 2002-09-28 | 2003-04-23 | 宁波华液机器制造有限公司 | Internal gear pump |
| EP1970570A2 (en) * | 2007-03-16 | 2008-09-17 | Yamada Manufacturing Co., Ltd. | Internal gear pump |
| CN203730305U (en) * | 2014-01-26 | 2014-07-23 | 潘光奇 | Internally-engaged gear pump |
| CN103883516A (en) * | 2014-02-24 | 2014-06-25 | 江苏驰翔精密齿轮有限公司 | Fixed-displacement internal-meshing gear pump |
| CN205779681U (en) * | 2016-05-10 | 2016-12-07 | 广州泰旺精密机械有限公司 | There is shimming assembly and the crescent gear pump of pressure guide hole |
| CN206860432U (en) * | 2017-06-16 | 2018-01-09 | 海特克液压有限公司 | A kind of crescent gear pump |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019071982A1 (en) * | 2017-10-13 | 2019-04-18 | 南京蒙福液压机械有限公司 | Hydraulic internal gear pump |
| CN107676255A (en) * | 2017-10-20 | 2018-02-09 | 南京蒙福液压机械有限公司 | One kind has pressure compensated crescent gear pump |
| CN108412756A (en) * | 2018-04-13 | 2018-08-17 | 温州海特克动力股份有限公司 | A kind of adjustable crescent gear pump of volumetric efficiency |
| CN108412756B (en) * | 2018-04-13 | 2019-04-05 | 温州海特克动力股份有限公司 | A kind of adjustable crescent gear pump of volumetric efficiency |
| CN111102187A (en) * | 2019-12-23 | 2020-05-05 | 滁州神煜液压科技有限公司 | Internal gear pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107165820A (en) | A kind of crescent gear pump | |
| CN104454511B (en) | A kind of crescent gear pump being applicable to high-pressure high-flow | |
| CN103939333B (en) | A kind of inside gearing pump with radial compensation | |
| CN105190037B (en) | Gear with engaging tooth | |
| CN103291609A (en) | Biaxial harmonic gear pump | |
| CN206860432U (en) | A kind of crescent gear pump | |
| CN209164072U (en) | A kind of external gear rotary pump inner end wedge thread form compensating groove | |
| JP2014009690A (en) | Double-internal gear pump | |
| CN103062046A (en) | Twisted-type rotor pump | |
| CN202370829U (en) | Ring-shaped air bag compensating internal and external gear pump | |
| CN205277800U (en) | Take gear pump of relief valve | |
| CN203384041U (en) | Inner meshing cycloid rotor pump | |
| CN107237866A (en) | A kind of planet knuckle-tooth formula decelerator | |
| CN103541893A (en) | Inner gearing shaft head cycloid gear pump | |
| CN102518587A (en) | Compensating internal-external gear pump for internal pressure passage | |
| CN206290430U (en) | A kind of external gear for fluid transmission pump | |
| CN202391726U (en) | Dual-cavity vane pump compensated by combination of leaf spring and annular air bag | |
| CN102418696A (en) | Cylindrical spring compensation internal/external gear pump | |
| CN103742626A (en) | Gear tooth structure of gear, gear pump with gear tooth structure and fluid transmission device with gear pump | |
| CN204126883U (en) | A kind of crescent gear pump | |
| CN203570587U (en) | Disc ring crush multifunctional broad spectrum medium pump | |
| CN202348662U (en) | Dual-cavity vane pump compensated by leaf spring and cylindrical spring jointly | |
| CN203702555U (en) | Oil pump gear | |
| CN102425545A (en) | Large and small cylinder spring combination compensation double-cavity vane pump | |
| CN109322821B (en) | Combined structure for eliminating radial force of gear pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180130 Address after: Ju Guang Yuan Yue Le Xi Jie Lucheng District of Wenzhou City, Zhejiang Province, No. 156 325000 Applicant after: Wenzhou haiteke power Limited by Share Ltd Address before: Ju Guang Yuan Yue Le Xi Jie Lucheng District of Wenzhou City, Zhejiang Province, No. 156 325000 Applicant before: High-tech Fluid Power Co., Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170915 |