CN109209865A - A kind of axle sleeve and method inhibiting gear pump noise - Google Patents
A kind of axle sleeve and method inhibiting gear pump noise Download PDFInfo
- Publication number
- CN109209865A CN109209865A CN201811388820.7A CN201811388820A CN109209865A CN 109209865 A CN109209865 A CN 109209865A CN 201811388820 A CN201811388820 A CN 201811388820A CN 109209865 A CN109209865 A CN 109209865A
- Authority
- CN
- China
- Prior art keywords
- axle sleeve
- pocketed oil
- variable volume
- gear pump
- oil area
- 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.)
- Granted
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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
-
- 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
- F04C15/0049—Equalization of pressure pulses
-
- 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
- F04C2240/00—Components
- F04C2240/60—Shafts
- F04C2240/605—Shaft sleeves or details thereof
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention belongs to gear pump technical fields, more particularly to a kind of axle sleeve and method for inhibiting gear pump noise, including axle sleeve and the variable volume cavity on axle sleeve with pocketed oil area connection is set, the pocketed oil area includes high pressure pocketed oil area and low pressure pocketed oil area, there are two variable volume cavity is set, it is located at high pressure pocketed oil area and low pressure pocketed oil area, connection between two variable volume cavities.Increase its filter capacity to two parts pressure fluctuation of high-low pressure pocketed oil region, to achieve the purpose that reduce gear pump operating noise, further expands the application scenarios of gear pump.The present invention has highlighted filter capacity brought by the variable volume of axle sleeve structure of the present invention, has alleviated the pressure fluctuation in high-low pressure two parts pocketed oil region by way of constructing two variable volumes on axle sleeve.
Description
Technical field
The invention belongs to gear pump technical fields, and in particular to a kind of axle sleeve and method for inhibiting gear pump noise.
Background technique
External gear rotary pump is a kind of kinetic pump for pumping work oil liquid, and structure is simple, at low cost, using pole
Extensively；But disadvantage is similarly obvious, flow pulsation and pocketed oil problem are serious, especially pressure fluctuation caused by pocketed oil phenomenon
The harm caused by pump can make pump generate critical noisy at work still without being fundamentally resolved.
For the harm for reducing pocketed oil phenomenon, most common method is to cover lotus of starting discharging in the lateral ends of gear meshing section
Slot, compensating groove in the prior art are usually that pocketed oil higher-pressure region is drained into gear pump oil extraction area, and pocketed oil low-pressure area drains into gear pump
Oil suction area, but to guarantee the reliable sealing between height hydraulic fluid port, so that off-load groove location can not be in solution pocketed oil phenomenon most
Good region causes pocketed oil phenomenon to solve and is not thorough.
The compensating groove of external gear rotary pump is opened up and always is a contradiction point, due to compensating groove in the prior art
Opening up thinking all is that the oil liquid in dead volume is allowed to communicate with corresponding oil discharge outlet or inlet port, in this case will there is one
The risk that external gear rotary pump suction hydraulic fluid port is instantaneously linked up, and in the tradeoff reliable seal length of compensating groove and asking for unloaded position
In topic, the priority of seal length is higher than the solution degree to pocketed oil phenomenon, therefore constrains and opened up in the prior art
Off-load groove location makes it that can not thoroughly solve the pressure fluctuation in choke-out cavity caused by external gear rotary pump pocketed oil phenomenon
Generated additional noise.
Summary of the invention
In view of the above technical problems, variable by setting the present invention provides a kind of axle sleeve for inhibiting gear pump noise
Volume structure, the effective pulsation for alleviating pocketed oil pressure, reaches noise reduction purpose.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows:
A kind of axle sleeve inhibiting gear pump noise, including axle sleeve and is arranged in the variable volume cavity on axle sleeve with pocketed oil area connection,
The pocketed oil area includes high pressure pocketed oil area and low pressure pocketed oil area, there are two variable volume cavity is set, is located at high pressure pocketed oil area and low
It presses at pocketed oil area, connection between two variable volume cavities.
The variable volume cavity is made of elastic parts and the blind hole being arranged on axle sleeve, and the elastic parts is arranged in blind hole
Interior, through-hole elastic parts changes blind hole volume.
It is equipped with retaining ring in the blind hole, elastic parts is limited by retaining ring.
Connection position between two variable volume cavity is located at the top of two variable volume cavities.
A method of inhibiting gear pump noise, it can at the placement configurations that axle sleeve is in contact with gear pump pocketed oil region two
Variable volume chamber alleviates the pressure fluctuation in high pressure pocketed oil area and low pressure pocketed oil area in a manner of filtering.
Connection between two variable volume cavities.
By the way that axial blind hole is arranged on axle sleeve, and spring catch is being arranged inside, to form variable volume cavity.
Compared with prior art, the present invention having the beneficial effect that
Compared to the axle sleeve that tradition is provided with compensating groove, the present invention is somebody's turn to do by constructing the variable volume cavity of two parts on axle sleeve
Locally variable cavity is not communicated with the suction of pump, oil discharge outlet, thus solves traditional compensating groove since gear pump suction hydraulic fluid port is reliable
The requirement of sealing and can not thoroughly solve the problems, such as that pocketed oil endangers.
Simultaneously because structure involved in the invention will not allow the oil liquid in tired region to communicate with the suction hydraulic fluid port of pump, just keep away
Influence of the pocketed oil flow pulsation to pump output flow is exempted from, the axle sleeve structure of compensating groove will not be provided with as tradition, due to pocketed oil area
Domain oil liquid is communicated with pump oil discharge outlet, may increase the output flow pulsation of gear pump, band moment in gear pump operation process
Carry out extra noise.
The present invention emphatically analyze in practice gear pump due to backlash is smaller and causing pocketed oil region actually can divide
It the case where for two parts of high pressure and low pressure, is proposed according to the corresponding pocketed oil pressure change in high pressure pocketed oil area and low pressure pocketed oil area
The scheme for filtering denoising structure, compared to tradition protected oil volume as a whole come other schemes analyzed, to practical with more finger
Meaning is led, it is also more accurate and thorough to the solution of Oil-blocking Phenomenon in Gear Oil Pump.
Increase its filter capacity to two parts pressure fluctuation of high-low pressure pocketed oil region, is made an uproar with reaching reduction gear pump work
The purpose of sound further expands the application scenarios of gear pump.The present invention on axle sleeve construct two variable volumes by way of,
Filter capacity brought by the variable volume of axle sleeve structure of the present invention has been highlighted, high-low pressure two parts pocketed oil area is alleviated
The pressure fluctuation in domain.
By the way that retaining ring is arranged, on the one hand can be effectively prevented in the gear pump course of work, elastic parts (spring and cylinder
Pin) it is detached from blind hole, can not work normally gear pump；On the other hand, it can use retaining ring and carry out certain precommpression to spring,
Make the structure in the dynamic process being filtered to pocketed oil pressure, both avoids the free vibration of straight pin, while
The motor imagination of straight pin can be allowed more timely and reliable.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of variable volume cavity of the present invention；
Fig. 3 is external gear rotary pump pocketed oil process schematic；
Fig. 4 is the structural schematic diagram of retaining ring of the present invention；
Wherein: 1 is variable volume cavity A, and 2 be straight pin, and 3 be spring, and 4 be axle sleeve, and 5 be variable volume cavity B.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
As shown in figure 3, the figure is from top to bottom, the overall process of external gear rotary pump pocketed oil phenomenon generation is reflected by A to C,
And the dead volume formed in engagement process, dotted line position is gear path of contact in figure, i.e. external gear pump pair is all
Meshing point is in this path of contact.
With the rotation of external gear pump pair, entire protected oil volume (including high pressure pocketed oil area and low pressure pocketed oil area) experience is first
The process to become larger after becoming smaller, what B was indicated in Fig. 3 is the smallest position of whole protected oil volume.And in practice due to external gear pump
Secondary sideshake is smaller, causes pocketed oil higher-pressure region and pocketed oil low-pressure area that cannot link up in time and swimmingly, entire protected oil volume
It is divided into pocketed oil higher-pressure region and pocketed oil low-pressure area.Terminate from pocketed oil occurs to pocketed oil, the volume of pocketed oil higher-pressure region is becoming smaller always；And
The volume of pocketed oil low-pressure area is increasing always.It is reflected in pressure just and will appear periodic pressure fluctuation.
A method of inhibiting gear pump noise, it can at the placement configurations that axle sleeve is in contact with gear pump pocketed oil region two
Variable volume chamber alleviates the pressure fluctuation in high pressure pocketed oil area and low pressure pocketed oil area in a manner of filtering.Connection between two variable volume cavities.
By beating axial aperture (blind hole), and interior setting spring adds straight pin, it is allowed to form a variable volume, exercises
The function of c-type filter effectively to alleviate the pulsation of pocketed oil pressure, reaches noise reduction purpose；It is formed by additionally, due to the structure
Additional variable volume cavity is not communicated with the suction of external gear rotary pump, oil discharge outlet, it is possible to guarantee external gear rotary pump suction, oil extraction
Reliable sealing between mouthful.
As illustrated in fig. 1 and 2, a kind of axle sleeve inhibiting gear pump noise, including axle sleeve 4 and setting on axle sleeve 4 and are stranded
The variable volume cavity of oily area's connection, pocketed oil area include high pressure pocketed oil area and low pressure pocketed oil area, there are two variable volume cavity is set, are located at
At high pressure pocketed oil area and low pressure pocketed oil area, connection between two variable volume cavities.
Variable volume cavity is made of elastic parts and the blind hole being arranged on axle sleeve 4, and elastic parts is arranged in blind hole, through-hole
Elastic parts changes blind hole volume.The preferably circular blind hole of blind hole.
Specific: elastic parts uses spring catch, and spring catch is made of spring 3 and straight pin 2, the both ends difference of spring 3
It is fixedly connected with spring catch and blind hole (bottom).Straight pin 2 may be constructed the structure of similar piston with blind hole, pass through straight pin 2
Sliding changes its volume for changing blind hole relative to the position of blind hole.Wherein: the specific diameter of straight pin 2 is according to blind hole
Aperture determine, further, straight pin be equipped with damping hole.Connection position between two variable volume cavities is located at two variable volume cavity tops
Spring cavity should be arranged in the cross-drilled hole in portion, i.e. two variable volume cavity of connection.
Be equipped with retaining ring in blind hole, be equipped with corresponding notch in blind hole, certainly can also otherwise to retaining ring into
Row is fixed.Elastic parts (spring 3 and straight pin 2) is limited by retaining ring, it is prevented to be detached from blind hole.The internal diameter of retaining ring is small
In the outer diameter of straight pin 2, retaining ring can resist straight pin 2；The specific location of retaining ring is set according to actual conditions, and should ensure that and passes through
Retaining ring can generate certain pretightning force to spring catch, so that 3 precommpression of spring.
For ease of description, two variable volume cavities are respectively variable volume cavity A1 and variable volume cavity B5, in which: variable volume cavity A1 with
High pressure pocketed oil area connection, variable volume cavity B5 and low pressure pocketed oil area connection.
Use process is as follows: two variable volumes being made up of variable volume cavity A1 and variable volume cavity B5, and utilize its appearance
Product changeability plays filter effect to the pressure fluctuation in pocketed oil region.
During reducing for high pressure pocketed oil volume, extra oil liquid can enter variable volume cavity A1, and oil liquid passes through circle
Damping hole in pin 2 generates pressure drop, pushes straight pin 2 to move up under differential pressure action, while the spring cavity oil liquid of variable volume cavity A1
Enter the spring cavity of variable volume cavity B5 by cross-drilled hole, until high pressure protected oil volume is minimum, i.e., pocketed oil terminates；For low pressure pocketed oil area
During domain volume increases, variable volume cavity B5 straight pin cavity of resorption will appear parital vacuum, and the oil liquid of variable volume cavity B5 can be timely
To the region repairing of low pressure pocketed oil, and the oil liquid in the spring cavity of variable volume cavity B5 also can be by damping hole to low pressure pocketed oil area
Domain flowing exits engagement, end pocketed oil until low pressure pocketed oil volume reaches maximum.
Only presently preferred embodiments of the present invention is explained in detail above, but the present invention is not limited to above-described embodiment,
Within the knowledge of a person skilled in the art, it can also make without departing from the purpose of the present invention each
Kind variation, various change should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of axle sleeve for inhibiting gear pump noise, it is characterised in that: including axle sleeve and be arranged on axle sleeve and pocketed oil area connection
Logical variable volume cavity, the pocketed oil area include high pressure pocketed oil area and low pressure pocketed oil area, there are two variable volume cavity is set, are located at height
It presses at pocketed oil area and low pressure pocketed oil area, connection between two variable volume cavities.
2. a kind of axle sleeve for inhibiting gear pump noise according to claim 1, it is characterised in that: the variable volume cavity is by bullet
Property component and the blind hole composition that is arranged on axle sleeve, the elastic parts be arranged in blind hole, blind hole is changed by elastic parts
Volume.
3. a kind of axle sleeve for inhibiting gear pump noise according to claim 2, it is characterised in that: be equipped with gear in the blind hole
Circle, limits elastic parts by retaining ring.
4. it is according to claim 1 it is a kind of inhibit gear pump noise axle sleeve, it is characterised in that: two variable volume cavity it
Between connection position be located at the top of two variable volume cavities.
5. a kind of method for inhibiting gear pump noise, it is characterised in that: in the position that axle sleeve is in contact with gear pump pocketed oil region
Two variable volume cavities are constructed, alleviate the pressure fluctuation in high pressure pocketed oil area and low pressure pocketed oil area in a manner of filtering.
6. a kind of method for inhibiting gear pump noise according to claim 5, it is characterised in that: between two variable volume cavities
Connection.
7. a kind of method for inhibiting gear pump noise according to claim 5, it is characterised in that: by being arranged on axle sleeve
Axial blind hole, and spring catch is being arranged inside, to form variable volume cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811388820.7A CN109209865B (en) | 2018-11-21 | 2018-11-21 | Shaft sleeve and method for inhibiting noise of gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811388820.7A CN109209865B (en) | 2018-11-21 | 2018-11-21 | Shaft sleeve and method for inhibiting noise of gear pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109209865A true CN109209865A (en) | 2019-01-15 |
| CN109209865B CN109209865B (en) | 2023-08-01 |
Family
ID=64993365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811388820.7A Active CN109209865B (en) | 2018-11-21 | 2018-11-21 | Shaft sleeve and method for inhibiting noise of gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109209865B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915122A (en) * | 2021-10-26 | 2022-01-11 | 无锡市东液机械制造有限公司 | Anti-trapping oil gear pump |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1162700A (en) * | 1965-12-10 | 1969-08-27 | Kadron Gmbh | Gear Pump or Motor |
| CN2711414Y (en) * | 2004-07-14 | 2005-07-20 | 申利宾 | Gear pump without pocketed oil |
| EP1647713A2 (en) * | 2004-10-15 | 2006-04-19 | CNH Italia S.p.A. | Fluid pumping apparatus with Helmholtz-resonator |
| CN2864158Y (en) * | 2005-11-09 | 2007-01-31 | 胡远祥 | Improved gear oil pump |
| CN202001293U (en) * | 2011-04-13 | 2011-10-05 | 姜卫东 | Linear conjugated inner meshing gear pump |
| CN102465872A (en) * | 2010-11-19 | 2012-05-23 | 沈广邦 | Externally-engaged gear pump |
| CN108825492A (en) * | 2018-07-24 | 2018-11-16 | 太原科技大学 | A kind of structure and its method for eliminating Oil-blocking Phenomenon in Gear Oil Pump |
| CN209041109U (en) * | 2018-11-21 | 2019-06-28 | 太原科技大学 | A kind of axle sleeve inhibiting gear pump noise |
-
2018
- 2018-11-21 CN CN201811388820.7A patent/CN109209865B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1162700A (en) * | 1965-12-10 | 1969-08-27 | Kadron Gmbh | Gear Pump or Motor |
| CN2711414Y (en) * | 2004-07-14 | 2005-07-20 | 申利宾 | Gear pump without pocketed oil |
| EP1647713A2 (en) * | 2004-10-15 | 2006-04-19 | CNH Italia S.p.A. | Fluid pumping apparatus with Helmholtz-resonator |
| CN2864158Y (en) * | 2005-11-09 | 2007-01-31 | 胡远祥 | Improved gear oil pump |
| CN102465872A (en) * | 2010-11-19 | 2012-05-23 | 沈广邦 | Externally-engaged gear pump |
| CN202001293U (en) * | 2011-04-13 | 2011-10-05 | 姜卫东 | Linear conjugated inner meshing gear pump |
| CN108825492A (en) * | 2018-07-24 | 2018-11-16 | 太原科技大学 | A kind of structure and its method for eliminating Oil-blocking Phenomenon in Gear Oil Pump |
| CN209041109U (en) * | 2018-11-21 | 2019-06-28 | 太原科技大学 | A kind of axle sleeve inhibiting gear pump noise |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915122A (en) * | 2021-10-26 | 2022-01-11 | 无锡市东液机械制造有限公司 | Anti-trapping oil gear pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109209865B (en) | 2023-08-01 |
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