CN203532246U - High-low pressure duplicate gear pump - Google Patents
High-low pressure duplicate gear pump Download PDFInfo
- Publication number
- CN203532246U CN203532246U CN201320650733.0U CN201320650733U CN203532246U CN 203532246 U CN203532246 U CN 203532246U CN 201320650733 U CN201320650733 U CN 201320650733U CN 203532246 U CN203532246 U CN 203532246U
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- China
- Prior art keywords
- pressure
- gear
- low
- housing
- protecgulum
- 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.)
- Expired - Lifetime
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 34
- 230000009977 dual effect Effects 0.000 claims description 13
- 239000000945 filler Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000007935 neutral effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
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Abstract
The utility model relates to the engineering machinery industry, is applicable to hydraulic systems such as walking machines and industrial equipment, and particularly provides a high-low pressure duplicate gear pump. The high-low pressure duplicate gear pump comprises a pump body, a casing and a front cover, wherein the junction surfaces of two ends of the pump body are fixedly connected with the casing and the front cover through positioning pins respectively; a driving shaft penetrates the pump body; one end of the driving shaft is arranged inside the casing, and the other end of the driving shaft extends out of the front cover; a first low-pressure large displacement gear is mounted on the driving shaft arranged inside the pump body, and a first high-pressure small displacement gear is mounted on the driving shaft arranged inside the casing; a driven shaft is arranged on the pump body in a penetrating manner; two ends of the driven shaft are arranged inside the casing and the front cover respectively; a second low-pressure large displacement gear is mounted on the driven shaft arranged inside the pump body, and a second high-pressure small displacement gear is mounted on the driven shaft arranged inside the casing. According to the high-low pressure duplicate gear pump, the hydraulic system of the conventional gear pump can be simplified, and the volumetric efficiency of the gear pump can be improved.
Description
Technical field
The utility model relates to construction machinery industry, is applied in the hydraulic systems such as running mechanism and industry equipment, specifically a kind of high-and-low-pressure dual.
Background technique
Gear pump is to rely on formed swept volume between the pump housing and engaging gear to change and the mobile rotary pump of carrying liquid or making it supercharging.By two gears, the pump housing and front and rear covers, form two enclosed spaces, when gear rotates, the volume in the space of the side that is out of gear is large from little change, forms vacuum, and liquid is sucked, and the volume in the space of gear engagement side is from diminishing greatly, and liquid is clamp-oned in pipeline and gone.Suction chamber and discharge side are to lean on the line of contact of two gears to separate.
Existing high-pressure gear pump and low pressure gear pump are mostly independent pump body structure, on the pump housing, need to install more hydraulic element and all kinds of hydraulic pressure auxiliary, in use two pump housings couple together more complicated, and two pump housings just need two protecgulums, two driving shafts and driven shaft, cause manufacturing cost larger.The volumetric efficiency of existing gear pump is also lower simultaneously.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of high-and-low-pressure dual simple in structure, ingenious, rational is provided, and can simplify the hydraulic system of existing gear pump, improves the volumetric efficiency of gear pump.
The technological scheme providing according to the utility model: a kind of high-and-low-pressure dual, be characterised in that: comprise the pump housing, housing, protecgulum, described pump housing two ends junction surface is fixedly connected with housing and protecgulum by locating stud respectively, driving shaft runs through the described pump housing, described driving shaft one end is placed in housing, the other end passes from protecgulum, and described driving shaft is positioned on the axle of the pump housing installs the large discharge capacity gear of the first low pressure, is positioned on the axle of housing the first high-pressure small-displacement gear is installed; On the pump housing, also run through and be provided with driven shaft, described driven shaft two ends are placed in respectively housing and protecgulum, and described driven shaft is positioned on the axle of the pump housing the large discharge capacity gear of the second low pressure is installed, and be positioned on the axle of housing the second high-pressure small-displacement gear is installed; The large discharge capacity gear of the large discharge capacity gear of described the first low pressure and the second low pressure forms gear mesh, and described the first high-pressure small-displacement gear and the second high-pressure small-displacement gear form gear mesh; Described the first high-pressure small-displacement gear and the second high-pressure small-displacement gear both ends of the surface are respectively equipped with lateral plate component.
As further improvement of the utility model, described lateral plate component comprises side plate, arc seal ring, sealing blend stop, place, described side plate both ends of the surface neutral position is compounded with respectively copper coin and steel plate, the copper coin face of its latus inframedium abuts on the first high-pressure small-displacement gear and the second high-pressure small-displacement gear face, arc seal ring and sealing blend stop are flush-mounted in the steel plate surface of side plate, and described side plate two ends circular hole is set with on driving shaft, driven shaft.
As further improvement of the utility model, on described housing, offer oil outlet, on the pump housing, offer filler opening, and be installed into oil pipe at described filler opening place, between described oil outlet and filler opening, by oil pocket, be connected.
As further improvement of the utility model, described driving shaft outer end is supported in the flange hole of protecgulum by deep groove ball bearing, and at described deep groove ball bearing arranged outside seal ring, seal ring outer ring holds out against on protecgulum flange hole inwall.
As further improvement of the utility model, on the described pump housing, be also fixed with one-way valve, described one-way valve is linked up oil outlet by oil circuit.
As further improvement of the utility model, spill valve is also installed on described protecgulum, described spill valve comprises cover cap, poppet valve core, spring, adjusting screw, rubber column, wherein poppet valve core is arranged in cover cap inner chamber, and on poppet valve core, being arranged with spring, rubber column is arranged between poppet valve core bottom and cover cap cavity bottom.
The utility model compared with prior art, advantage is: the utility model comprises one group of large discharge capacity low pressure gear pump and one group of small displacement high-pressure gear pump, structurally, in protecgulum, add spill valve, in low-pressure pump body, add one-way valve, and driven the large discharge capacity gear of low pressure and high-pressure small-displacement gear to rotate by a pair of master and slave moving axis simultaneously.In hydraulic system, according to the size of induced pressure, can be by the control of the spill valve on protecgulum and the one-way valve on low-pressure pump body, high-and-low-pressure dual just can be realized low pressure and mass flow, and double pump is output hydraulic pressure oil simultaneously; The periodic duty of the independent output hydraulic pressure oil of high-pressure low-flow pump.The high-and-low-pressure dual that integrates high-pressure small-displacement gear pump and the large displacement gear pump of low pressure, power loss is little, simple in structure, compact.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is B-B cut-away view in Fig. 1.
Fig. 3 is the structural representation of lateral plate component 2.
Fig. 4 is the right elevation of Fig. 3.
Fig. 5 is the structural representation of spill valve.
Embodiment
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
As shown in Fig. 1 ~ 5, comprise housing 1, lateral plate component 2, side plate 2-1, arc seal ring 2-2, sealing blend stop 2-3, the first high-pressure small-displacement gear 3, locating stud 4, the pump housing 5, jump ring 6, the large discharge capacity gear 7 of the first low pressure, protecgulum 8, deep groove ball bearing 9, seal ring 10, driving shaft 11, spill valve 12, poppet valve core 12-1, spring 12-2, adjusting screw 12-3, rubber column 12-4, cover cap 12-5, push rod 13, driven shaft 14, one-way valve 15, socket head screw 16, oil inlet pipe 17, the large discharge capacity gear 18 of the second low pressure, the second high-pressure small-displacement gear 19, oil outlet 20 etc.
As shown in Fig. 1 ~ 5, a kind of high-and-low-pressure dual of the utility model, comprise the pump housing 5, housing 1, protecgulum 8, the described pump housing 5 two ends junction surfaces are fixedly connected with housing 1 and protecgulum 8 by locating stud 4 respectively, driving shaft 11 runs through the described pump housing 5, and described driving shaft 11 one end are placed in housing 1, and the other end passes from protecgulum 8, described driving shaft 11 is positioned on the axle of the pump housing 5 installs the large discharge capacity gear 7 of the first low pressure, is positioned on the axle of housing 1 the first high-pressure small-displacement gear 3 is installed; On the pump housing 5, also run through and be provided with driven shaft 14, described driven shaft 14 two ends are placed in respectively housing 1 and protecgulum 8, described driven shaft 14 is positioned on the axle of the pump housing 5 the large discharge capacity gear 18 of the second low pressure is installed, and is positioned on the axle of housing 1 the second high-pressure small-displacement gear 19 is installed; Large discharge capacity gear 18 formative gears pair of the large discharge capacity gear 7 of described the first low pressure and the second low pressure, described the first high-pressure small-displacement gear 3 and the second high-pressure small-displacement gear 19 formative gears pair; Described the first high-pressure small-displacement gear 3 and the second high-pressure small-displacement gear 19 both ends of the surface are respectively equipped with lateral plate component 2.
Described lateral plate component 2 comprises side plate 2-1, arc seal ring 2-2, sealing blend stop 2-3, place, described side plate 2-1 both ends of the surface neutral position is compounded with respectively copper coin and steel plate, the copper coin face of its latus inframedium 2-1 abuts on the first high-pressure small-displacement gear 3 and the second high-pressure small-displacement gear 19 end faces, arc seal ring 2-2 and sealing blend stop 2-3 are flush-mounted in the steel plate surface of side plate 2-1, and described side plate 2-1 two ends circular hole is set with on driving shaft 11, driven shaft 14; Between arc seal ring 2-2, the side plate that seals blend stop 2-3 and housing 1, formed high and low pressure Seal cage; When gear pump is worked, in high-pressure seal ring chamber, be full of certain pressure fluid, side plate 2-1 is under the effect of pressure oil, making only has one deck oil slick thickness between the gear face of side plate 2-1, and after end wear, side plate 2-1 can continue automatic compensation gap, reach nose balance object, improved the volumetric efficiency of high-pressure gear pump.
On described housing 1, offer oil outlet 20, on the pump housing 5, offer filler opening, and be installed into oil pipe 17 at described filler opening place, between described oil outlet 20 and filler opening, by oil pocket, be connected.
Described driving shaft 11 outer ends are supported in the flange hole of protecgulum 8 by deep groove ball bearing 9, and at described deep groove ball bearing 9 arranged outside seal rings 10, seal ring 10 outer rings hold out against on protecgulum 8 flange hole inwalls.
On the described pump housing 5, be also fixed with one-way valve 15, described one-way valve 15 is linked up oil outlet 20 by oil circuit.
In order to make the join strength between the utility model middle shell 1, the pump housing 5, protecgulum 8 threes enough large, also used socket head screw 16 also further three to be fastenedly connected.
As shown in Fig. 2, Fig. 5, on described protecgulum 8, spill valve 12 is also installed, described spill valve 12 comprises cover cap 12-5, poppet valve core 12-1, spring 12-2, adjusting screw 12-3, rubber column 12-4, wherein poppet valve core 12-1 is arranged in cover cap 12-5 inner chamber, and on poppet valve core 12-1, being arranged with spring 12-2, rubber column 12-4 is arranged between poppet valve core 12-1 bottom and cover cap 12-5 cavity bottom.
The utility model gear pump is the high and low pressure hydraulic gear pump in hydraulic system and pressure controlled valve, position control valve, is organically integrated.The parallel connection of pumps of two mekydro lists together, on protecgulum, loaded onto spill valve, on low-pressure pump body, loaded onto check valve assembly, reduced by a protecgulum, a pair of driving and driven gear shaft, can also reduce link between original each hydraulic element and each hydraulic pressure auxiliary etc.Greatly reduce hydraulic system manufacture cost.
Claims (6)
1. a high-and-low-pressure dual, it is characterized in that: comprise the pump housing (5), housing (1), protecgulum (8), the described pump housing (5) two ends junction surface is fixedly connected with housing (1) and protecgulum (8) by locating stud (4) respectively, driving shaft (11) runs through the described pump housing (5), described driving shaft (11) one end is placed in housing (1), the other end passes from protecgulum (8), described driving shaft (11) is positioned on the axle of the pump housing (5) installs the first large discharge capacity gear of low pressure (7), be positioned on the axle of housing (1) the first high-pressure small-displacement gear (3) is installed, on the pump housing (5), also run through and be provided with driven shaft (14), described driven shaft (14) two ends are placed in respectively housing (1) and protecgulum (8), described driven shaft (14) is positioned on the axle of the pump housing (5) the second large discharge capacity gear of low pressure (18) is installed, and is positioned on the axle of housing (1) the second high-pressure small-displacement gear (19) is installed, described the first large discharge capacity gear of low pressure (7) and the second large discharge capacity gear of low pressure (18) formative gear pair, described the first high-pressure small-displacement gear (3) and the second high-pressure small-displacement gear (19) formative gear pair, described the first high-pressure small-displacement gear (3) and the second high-pressure small-displacement gear (19) both ends of the surface are respectively equipped with lateral plate component (2).
2. high-and-low-pressure dual as claimed in claim 1, it is characterized in that: described lateral plate component (2) comprises side plate (2-1), arc seal ring (2-2), sealing blend stop (2-3), place, described side plate (2-1) both ends of the surface neutral position is compounded with respectively copper coin and steel plate, the copper coin face of its latus inframedium (2-1) abuts on the first high-pressure small-displacement gear (3) and the second high-pressure small-displacement gear (19) end face, arc seal ring (2-2) and sealing blend stop (2-3) are flush-mounted in the steel plate surface of side plate (2-1), described side plate (2-1) two ends circular hole is set with in driving shaft (11), on driven shaft (14).
3. high-and-low-pressure dual as claimed in claim 1, it is characterized in that: on described housing (1), offer oil outlet (20), the pump housing offers filler opening on (5), and be installed into oil pipe (17) at described filler opening place, between described oil outlet (20) and filler opening, by oil pocket, be connected.
4. high-and-low-pressure dual as claimed in claim 1, it is characterized in that: described driving shaft (11) outer end is supported in the flange hole of protecgulum (8) by deep groove ball bearing (9), and at described deep groove ball bearing (9) arranged outside seal ring (10), seal ring (10) outer ring holds out against on protecgulum (8) flange hole inwall.
5. high-and-low-pressure dual as claimed in claim 1, is characterized in that: on the described pump housing (5), be also fixed with one-way valve (15), described one-way valve (15) is linked up oil outlet (20) by oil circuit.
6. high-and-low-pressure dual as claimed in claim 1, it is characterized in that: spill valve (12) is also installed on described protecgulum (8), described spill valve (12) comprises cover cap (12-5), poppet valve core (12-1), spring (12-2), adjusting screw (12-3), rubber column (12-4), wherein poppet valve core (12-1) is arranged in cover cap (12-5) inner chamber, and on poppet valve core (12-1), being arranged with spring (12-2), rubber column (12-4) is arranged between poppet valve core (12-1) bottom and cover cap (12-5) cavity bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320650733.0U CN203532246U (en) | 2013-10-21 | 2013-10-21 | High-low pressure duplicate gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320650733.0U CN203532246U (en) | 2013-10-21 | 2013-10-21 | High-low pressure duplicate gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203532246U true CN203532246U (en) | 2014-04-09 |
Family
ID=50418460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320650733.0U Expired - Lifetime CN203532246U (en) | 2013-10-21 | 2013-10-21 | High-low pressure duplicate gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203532246U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929930A (en) * | 2015-06-18 | 2015-09-23 | 河北睿智辰诚液压机械科技有限公司 | Gear pump capable of achieving high-pressure flow and low-pressure flow convergence and distribution |
| CN105805528A (en) * | 2016-03-16 | 2016-07-27 | 哈尔滨宏万智科技开发有限公司 | Gear oil pump with double transmission gear shafts |
| CN107327689A (en) * | 2017-08-17 | 2017-11-07 | 湖南机油泵股份有限公司 | A kind of duplex lubricating oil pump of variable displacement |
| CN111322238A (en) * | 2020-04-07 | 2020-06-23 | 江苏国瑞液压机械有限公司 | Integrated gear pump |
-
2013
- 2013-10-21 CN CN201320650733.0U patent/CN203532246U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929930A (en) * | 2015-06-18 | 2015-09-23 | 河北睿智辰诚液压机械科技有限公司 | Gear pump capable of achieving high-pressure flow and low-pressure flow convergence and distribution |
| CN104929930B (en) * | 2015-06-18 | 2017-03-01 | 河北睿智辰诚液压机械科技有限公司 | A kind of gear pump being capable of high-low pressure confluence |
| CN105805528A (en) * | 2016-03-16 | 2016-07-27 | 哈尔滨宏万智科技开发有限公司 | Gear oil pump with double transmission gear shafts |
| CN107327689A (en) * | 2017-08-17 | 2017-11-07 | 湖南机油泵股份有限公司 | A kind of duplex lubricating oil pump of variable displacement |
| CN111322238A (en) * | 2020-04-07 | 2020-06-23 | 江苏国瑞液压机械有限公司 | Integrated gear pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 214112 225, Jiangsu, Wuxi, New Town Industrial Zone Patentee after: Buch Hydraulic (Wuxi) Co.,Ltd. Address before: 214112 No. 225, tin Tai Road, Mei Village, Wuxi New District, Jiangsu Patentee before: WUXI DELI FLUID TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |