CN104533786A - Gear pump adopting new structure shaft sleeves - Google Patents
Gear pump adopting new structure shaft sleeves Download PDFInfo
- Publication number
- CN104533786A CN104533786A CN201410823855.4A CN201410823855A CN104533786A CN 104533786 A CN104533786 A CN 104533786A CN 201410823855 A CN201410823855 A CN 201410823855A CN 104533786 A CN104533786 A CN 104533786A
- Authority
- CN
- China
- Prior art keywords
- gear
- floating
- new structure
- driving gear
- axle sleeve
- 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
- F04C2/12—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
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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
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0023—Axial sealings for working fluid
- F04C15/0026—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or pumps, e.g. gear 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
- F04C2240/00—Components
- F04C2240/60—Shafts
- F04C2240/605—Shaft sleeves or details thereof
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The invention discloses a gear pump adopting new structure shaft sleeves. The gear pump comprises a pump body, a driving gear, a driven gear, a front cover and a back cover, wherein a floating side plate is arranged on one end surface of each of the driving gear and the driven gear, and a floating shaft sleeve is arranged on the other end surface of each of the driving gear and the driven gear; each floating shaft sleeve is positioned among the driving gear, the driven gear and the back cover, a load releasing groove is formed in one end surface of each floating shaft sleeve, a W sealing groove is formed in the other end surface of each floating shaft sleeve, and an in-circle through hole I for communicating the load releasing groove to the W sealing groove in the other end surface is also formed in each floating shaft sleeve; and a W sealing ring is arranged in the W sealing groove and is positioned between the floating shaft sleeve and the back cover, and the outer ring of the W sealing ring is clung to the inner wall of the pump body. According to the gear pump disclosed by the invention, the structure is simplified; the W sealing groove is formed in one end of each floating shaft sleeve and the W sealing ring is arranged in the W sealing groove, so that the amount of leakage from the end surfaces of the driving gear and the driven gear is reduced, and the volume efficiency is improved; and a unidirectional axial clearance compensation structure is adopted, so that the cost is saved on the premise that the use requirement of users is met.
Description
Technical field
The present invention relates to a kind of gear pump, specifically a kind of gear pump adopting new structure axle sleeve.
Background technique
Current domestic gear pump shaft all adopts to the side plate of floating seal and to make after the thick phosphor bronze of the inner side of steel plate sintering 0.5 ~ 0.7mm, and to ensure having good frictional behaviour between side plate and gear face, this kind of structure fabrication gets up relatively loaded down with trivial details.
Summary of the invention
Of the present invention for simplifying gear pump structure, improve the volumetric efficiency of gear pump, there is provided a kind of gear pump adopting new structure axle sleeve, it replaces the gear wherein original axle sleeve in one end and the combination of bimetal floating side plate by a floating buss, cost-saving under the prerequisite meeting user's use.
The present invention is by the following technical programs: a kind of gear pump adopting new structure axle sleeve, comprises the pump housing, to be arranged in the pump housing by DU bearing and the driving gear be engaged with each other and driven gear and be sealed in protecgulum and the bonnet at pump housing two ends; Described driving gear and driven gear an end face is provided with floating side plate, other end is provided with floating buss; Described floating buss is at driving gear, between driven gear and bonnet, and floating buss one end face has drain charge groove, other end has W seal groove, floating buss also has and is communicated with drain charge groove to the through hole I in the circle of other end W seal groove; Be provided with W seal ring in described W seal groove, W seal ring is between floating buss and bonnet, and outer ring and the pump housing inwall of W seal ring are close to.
It is further: the DU bearing in described driving gear rotating shaft and driven gear rotating shaft is arranged in protecgulum and floating buss respectively.
Described protecgulum has the through hole II being communicated with driving gear rotating shaft and driven gear rotating shaft.
The Pressure-Resistant Oil Seal preventing hydraulic oil along the outside seepage of moving gear rotating shaft is installed between described driving gear rotating shaft and protecgulum; The hole back-up ring preventing Pressure-Resistant Oil Seal from moving axially is provided with outside Pressure-Resistant Oil Seal.
Described floating side plate and floating buss are 8 fonts, and the shape of the drain charge groove on floating buss is in the W type relative with W seal groove.
Described through hole I is positioned at the middle part of 8 font floating busses.
The described pump housing and be separately installed with the rubber rectangular ring sealed between protecgulum and bonnet.
The described pump housing and protecgulum are linked together by locating stud; Linked together by screw and spring washer between the described pump housing and bonnet.
The present invention adopts unidirectional axial clearance compensation, the power of the resiliently deformable generation of the W seal ring at the floating buss back side is by floating side plate, driving gear, the gap only having one deck oil slick thickness is kept between driven gear and floating buss, during gear pump work, the back side of floating buss introduced by hydraulic oil by through hole I a on floating buss, an impacting force is produced to floating buss, this impacting force is slightly larger than pushing power open to floating buss, and these two force directions are contrary, line of action overlaps, floating buss is fitted with the end face of driving gear and driven gear all the time, and hydraulic oil is introduced in the annular region of W seal ring, promote W seal ring and be close to surrounding metal surface, form hermetically sealed space.The clearance leakage that minimizing floating buss cylindrical and pump housing inner chamber are formed, improves the volumetric efficiency of gear pump.
Advantage of the present invention is: simplify gear pump structure; Floating buss one end has W seal groove, is provided with W seal ring in W seal groove, reduces the leakage of driving gear and driven gear end face, improves volumetric efficiency; Adopt unidirectional axial clearance compensation structure, under the prerequisite meeting user's use, save cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of floating buss and W seal ring;
Fig. 3 is right elevation in Fig. 2;
Fig. 4 is left view in Fig. 2.
In figure: 1, driving gear; 2, hole back-up ring; 3, Pressure-Resistant Oil Seal; 4, protecgulum; 5, locating stud; 6, the pump housing; 7, bonnet; 8, spring washer; 9, screw; 10, W seal ring; 11, DU bearing; 12, floating buss; 13, rubber rectangular ring; 14, driven gear; 15, floating side plate; A, through hole I; B, through hole II.
Embodiment
Be below a specific embodiment of the present invention, existing the invention will be further described by reference to the accompanying drawings.
As shown in Figure 1, a kind of gear pump adopting new structure axle sleeve, the pump housing 6 front end connects protecgulum 4 by locating stud 5, and the pump housing 6 rear end is connected bonnet 7 by screw 9 with spring washer 8, installs the driving gear 1 be engaged with each other and driven gear 14 in the pump housing 6; The pump housing 6 and install the rubber rectangular ring 13 sealed between protecgulum 4 and bonnet 7 respectively; A DU bearing 11 is respectively installed at driving gear 1 rotating shaft and driven gear 14 rotating shaft two ends, and two DU bearings 11 of front end are arranged in protecgulum 4; Protecgulum 4 has through hole II b being communicated with driving gear 1 rotating shaft and driven gear 14 rotating shaft, the Pressure-Resistant Oil Seal 3 preventing hydraulic oil along the outside seepage of moving gear 1 rotating shaft is installed between driving gear 1 rotating shaft and protecgulum 4, outside Pressure-Resistant Oil Seal 3, is provided with the hole back-up ring 2 preventing Pressure-Resistant Oil Seal 3 from moving axially; Be provided with the floating side plate 15 of 8 fonts at the front-end face of driving gear 1 and driven gear 14, end face is provided with the floating buss 12 of 8 fonts thereafter; Again as shown in Figure 2 to Figure 3, described floating buss 12 1 end face has W seal groove, other end has drain charge groove, the shape of drain charge groove is in the W type relative with W seal groove, floating buss 12 also has and is communicated with drain charge groove to through hole I a in the circle of other end W seal groove, through hole I a is positioned at the middle part of 8 font floating busses 12; W seal ring 10 is installed in W seal groove, W seal ring 10 is between floating buss 12 and bonnet 7, outer ring and the pump housing 6 inwall of W seal ring 10 are close to, and in driving gear 1 rotating shaft and driven gear 14 rotating shaft, two DU bearings 11 of rear end are arranged in floating buss 12.
Driving gear 1 and driven gear 14 are meshed, and rotate under the drive of main frame motor, hydraulic oil are converted to high pressure oil and are transported in hydraulic system and go; Four DU bearings, 11 pairs of driving gears 1 and driven gear 14 play supporting role; Floating side plate 15, floating buss 12 and W seal ring 10 end face seal actions; Pressure-Resistant Oil Seal 3 prevents hydraulic oil along the outer seepage of gear axial pump; Hole back-up ring 2 prevents oil sealing from moving axially, and external connecting such as oil inlet and outlet, mounting flange, seam size, spindle nose connect form by manufacturer and user's consult to decide.
Floating side plate and floating buss all adopt tin albronze material, make there is good frictional behaviour between itself and gear face, the present invention adopts unidirectional axial clearance compensation, the power of the resiliently deformable generation of the W seal ring at the floating buss back side is by floating side plate, driving gear, the gap only having one deck oil slick thickness is kept between driven gear and floating buss, during gear pump work, the back side of floating buss introduced by hydraulic oil by through hole I a on floating buss, an impacting force is produced to floating buss, this impacting force is slightly larger than pushing power open to floating buss, and these two force directions are contrary, line of action overlaps, floating buss is fitted with the end face of driving gear and driven gear all the time, and hydraulic oil is introduced in the annular region of W seal ring, promote W seal ring and be close to surrounding metal surface, form hermetically sealed space.The clearance leakage that minimizing floating buss cylindrical and pump housing inner chamber are formed, improves the volumetric efficiency of gear pump.
Claims (8)
1. adopt a gear pump for new structure axle sleeve, comprise the pump housing (6), be arranged on by DU bearing (11) in the pump housing (6) and the driving gear be engaged with each other (1) and driven gear (14) and be sealed in protecgulum (4) and the bonnet (7) at the pump housing (6) two ends; It is characterized in that: an end face of described driving gear (1) and driven gear (14) is provided with floating side plate (15), other end is provided with floating buss (12); Described floating buss (12) is positioned at driving gear (1), between driven gear (14) and bonnet (7), floating buss (12) one end face has drain charge groove, other end has W seal groove, floating buss (12) also has and is communicated with drain charge groove to the through hole I (a) in the circle of other end W seal groove; Be provided with W seal ring (10) in described W seal groove, W seal ring (10) is positioned between floating buss (12) and bonnet (7), and outer ring and the pump housing (6) inwall of W seal ring (10) are close to.
2. a kind of gear pump adopting new structure axle sleeve according to claim 1, is characterized in that: the DU bearing (11) in (1) rotating shaft of described driving gear and driven gear (14) rotating shaft is arranged in protecgulum (4) and floating buss (12) respectively.
3. a kind of gear pump adopting new structure axle sleeve according to claim 2, is characterized in that: described protecgulum (4) has the through hole II (b) being communicated with driving gear (1) rotating shaft and driven gear (14) rotating shaft.
4. a kind of gear pump adopting new structure axle sleeve according to claim 1, is characterized in that: be provided with the Pressure-Resistant Oil Seal (3) preventing hydraulic oil along the outside seepage of moving gear (1) rotating shaft between (1) rotating shaft of described driving gear and protecgulum (4); Pressure-Resistant Oil Seal (3) outside is provided with the hole back-up ring (2) preventing Pressure-Resistant Oil Seal (3) from moving axially.
5. a kind of gear pump adopting new structure axle sleeve according to claim 1, is characterized in that: described floating side plate (15) and floating buss (12) are in 8 fonts, and the shape of the drain charge groove on floating buss (12) is in the W type relative with W seal groove.
6. a kind of gear pump adopting new structure axle sleeve according to claim 5, is characterized in that: described through hole I (a) is positioned at the middle part of 8 font floating busses (12).
7. a kind of gear pump adopting new structure axle sleeve according to claim 1, is characterized in that: the described pump housing (6) and be separately installed with the rubber rectangular ring (13) sealed between protecgulum (4) and bonnet (7).
8. a kind of gear pump adopting new structure axle sleeve according to claim 1, is characterized in that: the described pump housing (6) and protecgulum (4) are linked together by locating stud (5); Linked together by screw (9) and spring washer (8) between the described pump housing (6) and bonnet (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410823855.4A CN104533786A (en) | 2014-12-26 | 2014-12-26 | Gear pump adopting new structure shaft sleeves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410823855.4A CN104533786A (en) | 2014-12-26 | 2014-12-26 | Gear pump adopting new structure shaft sleeves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104533786A true CN104533786A (en) | 2015-04-22 |
Family
ID=52849375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410823855.4A Pending CN104533786A (en) | 2014-12-26 | 2014-12-26 | Gear pump adopting new structure shaft sleeves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104533786A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351186A (en) * | 2015-11-25 | 2016-02-24 | 徐州科源液压股份有限公司 | High-pressure gear pump with shaft sleeves of new structure |
| CN106481551A (en) * | 2015-08-28 | 2017-03-08 | 河南航天液压气动技术有限公司 | A kind of long-life gear Sliding bearing for pump with spring-compensating |
| CN107781291A (en) * | 2016-08-29 | 2018-03-09 | 河南航天液压气动技术有限公司 | A kind of pump of balanced radial force combination floating buss |
| CN109356845A (en) * | 2018-10-09 | 2019-02-19 | 宿迁学院 | A kind of gear pump without axial leakage device |
| CN109958618A (en) * | 2019-05-04 | 2019-07-02 | 世特科汽车工程产品（常州）有限公司 | A kind of external gear rotary pump that can compensate end clearance |
| CN113944628A (en) * | 2020-07-15 | 2022-01-18 | 合肥赛源液压件有限公司 | External gear pump of noise at bottom of high efficiency |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2308734Y (en) * | 1997-09-26 | 1999-02-24 | 乐清市大众液压机械制造公司 | High efficiency hydraulic geared pump |
| JP2002349448A (en) * | 2002-05-28 | 2002-12-04 | Hisao Kitayama | Biaxial rotary pump |
| CN201428592Y (en) * | 2009-06-18 | 2010-03-24 | 浙江德克玛液压制造有限公司 | Low voltage variable quantity blade pump |
| CN201606246U (en) * | 2009-12-16 | 2010-10-13 | 徐州科源液压有限公司 | Floating lateral plate for high-pressure gear oil pump with annular balance tank |
| CN202417933U (en) * | 2012-01-12 | 2012-09-05 | 合肥凯力达汽车配件制造有限公司 | Hydraulic gear pump |
| CN203051110U (en) * | 2013-01-11 | 2013-07-10 | 徐州科源液压股份有限公司 | Floating side plate of ultrahigh pressure gear pump |
| CN204476753U (en) * | 2014-12-26 | 2015-07-15 | 徐州科源液压股份有限公司 | A kind of gear pump adopting new structure axle sleeve |
-
2014
- 2014-12-26 CN CN201410823855.4A patent/CN104533786A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2308734Y (en) * | 1997-09-26 | 1999-02-24 | 乐清市大众液压机械制造公司 | High efficiency hydraulic geared pump |
| JP2002349448A (en) * | 2002-05-28 | 2002-12-04 | Hisao Kitayama | Biaxial rotary pump |
| CN201428592Y (en) * | 2009-06-18 | 2010-03-24 | 浙江德克玛液压制造有限公司 | Low voltage variable quantity blade pump |
| CN201606246U (en) * | 2009-12-16 | 2010-10-13 | 徐州科源液压有限公司 | Floating lateral plate for high-pressure gear oil pump with annular balance tank |
| CN202417933U (en) * | 2012-01-12 | 2012-09-05 | 合肥凯力达汽车配件制造有限公司 | Hydraulic gear pump |
| CN203051110U (en) * | 2013-01-11 | 2013-07-10 | 徐州科源液压股份有限公司 | Floating side plate of ultrahigh pressure gear pump |
| CN204476753U (en) * | 2014-12-26 | 2015-07-15 | 徐州科源液压股份有限公司 | A kind of gear pump adopting new structure axle sleeve |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481551A (en) * | 2015-08-28 | 2017-03-08 | 河南航天液压气动技术有限公司 | A kind of long-life gear Sliding bearing for pump with spring-compensating |
| CN105351186A (en) * | 2015-11-25 | 2016-02-24 | 徐州科源液压股份有限公司 | High-pressure gear pump with shaft sleeves of new structure |
| CN107781291A (en) * | 2016-08-29 | 2018-03-09 | 河南航天液压气动技术有限公司 | A kind of pump of balanced radial force combination floating buss |
| CN107781291B (en) * | 2016-08-29 | 2019-08-30 | 河南航天液压气动技术有限公司 | A kind of pump of balanced radial force combination floating buss |
| CN109356845A (en) * | 2018-10-09 | 2019-02-19 | 宿迁学院 | A kind of gear pump without axial leakage device |
| CN109356845B (en) * | 2018-10-09 | 2023-06-23 | 宿迁学院 | Axial leakage-free device for gear pump |
| CN109958618A (en) * | 2019-05-04 | 2019-07-02 | 世特科汽车工程产品（常州）有限公司 | A kind of external gear rotary pump that can compensate end clearance |
| CN113944628A (en) * | 2020-07-15 | 2022-01-18 | 合肥赛源液压件有限公司 | External gear pump of noise at bottom of high efficiency |
| CN113944628B (en) * | 2020-07-15 | 2023-04-25 | 合肥赛源液压件有限公司 | High-efficiency low-noise external gear pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150422 |