CN202391731U - Floating side plate of high-pressure gear pump - Google Patents
Floating side plate of high-pressure gear pump Download PDFInfo
- Publication number
- CN202391731U CN202391731U CN2011204225862U CN201120422586U CN202391731U CN 202391731 U CN202391731 U CN 202391731U CN 2011204225862 U CN2011204225862 U CN 2011204225862U CN 201120422586 U CN201120422586 U CN 201120422586U CN 202391731 U CN202391731 U CN 202391731U
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- side plate
- pressure
- concave surface
- gear pump
- plate body
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Abstract
The utility model relates to a floating side plate of high-pressure gear pump, which comprises 8-shaped side plate body. A driving gear shaft hole and a driven gear shaft hole are formed on the side plate body, and an arc-shaped high-pressure lower concave surface extending from a high-pressure region of a pump body to a low-pressure region of the pump body and communicated with a high-pressure region of the pump body of the gear pump is arranged on the front side of the side plate body and formed at the outer edge position where the tooth portion of a driving gear corresponds to the tooth portion of a driven gear of the gear pump. A W-shaped sealing groove where a W-shaped sealing ring and a W-shaped retainer ring are installed is formed at the position on the back side of the side plate body corresponding to the arc-shaped high-pressure lower concave surface. A sealing region with the same size as an included angle formed by 1-2 teeth is reserved on the arc-shaped high-pressure lower concave surface between the portion and the low-pressure region, wherein the portion extends from a central connecting line of the driving gear shaft hole and the driven gear shaft hole to one side of the low-pressure region. By appropriately enlarging the high-pressure region, a radial force in the pump body is balanced and decreased, and simultaneously high volumetric efficiency is also guaranteed.
Description
Technical field
The utility model relates to the component on the high-pressure gear pump, specifically relates to the floating side plate on a kind of high-pressure gear pump.
Background technique
Gear pump is to rely between pump chamber and engaging gear formed swept volume to change and move the rotary pump of carrying liquid or making it supercharging.Form two enclosed spaces by two gears, the pump housing and front and rear covers, when gear rotated, the volume in the space of the side that is out of gear was big from little change, formed vacuum, and liquid is sucked, and the volume in the space of gear engagement side is from diminishing greatly, went and liquid clamp-oned in the pipeline.Suction chamber and discharge side separate by two gear meshing lines.The pressure of the exhaust port of gear pump depends on the size that pumps place's resistance fully.Gear pump structure is simple, and cost is low, and contamination resistance is strong, and especially the needle bearing high-pressure gear pump has obtained extensive use on the earth moving machinery of operation, the medium and heavy discharging vehicle at the construction field (site).Along with the client is improving constantly the requirement of earth moving machinery work capacity, discharging vehicle useful load, therefore, require gear pump as its hydraulic work system dynamic source, the ability of high pressure resistant work not only will be arranged, also higher efficient to be arranged.
The suction chamber place hydraulic pressure of gear pump is low, and discharge side place hydraulic pressure is high, increases gradually from suction chamber to discharge side hydraulic pressure; These characteristics of gear pump make the gear shaft place receive radial imbalance force; And the gear pump working pressure is high more, and the radial imbalance force that its gear shaft bore is big more, and its bearing load is also big more; Not only cause gear shaft bending and damage of bearings easily, but also cause the volumetric efficiency of gear pump to reduce easily.In existing known high-pressure gear pump, adopt " expansion zone of high pressure " or structural measures such as " expansion low pressure areas " to reduce radial force usually, reduce the load of bearing;
A kind of high-pressure gear pump of the prior art with pressure compensation; This gear pump adopts the two-piece type structure; Wherein the front of floating side plate has ring shaped slot; Expand the zone of high pressure of gear pump to low pressure area through being provided with of ring shaped slot,, thereby reduce the gear pump force in radial through the equilibrium of forces mode.But in actual use, the expansion of zone of high pressure is limited, and ring shaped slot can not design longly towards an end of low pressure area, otherwise causes the zone of high pressure to be mixed with the interior hydraulic pressure oil phase of low pressure area easily, thereby causes the volumetric efficiency of gear pump to reduce.
The model utility content
For this reason; The utility model technical problem to be solved is that the circular groove of the expansion zone of high pressure on the floating side plate of existing technology mesohigh gear pump is provided with unreasonable and causes the zone of high pressure to be mixed with hydraulic oil in the low pressure area; Thereby the problem that the volumetric efficiency that causes gear pump reduces; Provide a kind of rational in infrastructure, can prevent that the hydraulic oil in zone of high pressure and the low pressure area from mixing, can reduce the floating side plate of high-pressure gear pump bearing force in radial again.
For solving the problems of the technologies described above; The floating side plate of a kind of high-pressure gear pump of the utility model; Comprise the side plate body that is " 8 " font, form driving gear axis hole and driven gear axis hole on the said side plate body, the front of said side plate body; Form with the zone of high pressure of the pump housing of gear pump with the corresponding outer rim place of tooth portion of the driving and driven gear of gear pump and to communicate, and the arc high pressure concave surface that extends to low pressure area by the said zone of high pressure of the said pump housing; The back side of said side plate body forms " ω " shape seal groove of installation " ω " shape seal ring and " ω " shape back-up ring with the corresponding position of said arc high pressure concave surface; On the said arc high pressure concave surface, between part that said low pressure area one side is extended and said low pressure area, keep the sealing area of about 1 to 2 formed corner dimension of tooth from said driving gear axis hole and the said driven gear axis hole line of centres.
The front of said side plate, the position corresponding with the suction side of the said pump housing forms the low pressure concave surface.
The side plate thickness that said arc high pressure concave surface, said low pressure concave surface all hang down about 1/12-1/11 than the plane at the positive place of said side plate.
On the front of said side plate body, the position of discharging side corresponding near the hydraulic oil driving and driven gear meshing place forms the high pressure side compensating groove; On the front of said floating side plate, form the low voltage side compensating groove corresponding near the position of the hydraulic oil suction side said engagement place, and the end towards said zone of high pressure of said arc high pressure concave surface originates in said high pressure side compensating groove trough rim.
Said low pressure compensating groove is the straight trough of the driving and driven gear shaft of a communication through the hole.
The high pressure compensation district that said " ω " shape seal groove is separated is " ω " concave surface along the moulding of said side plate body outer rim, and the outer rim place of said " ω " concave surface forms the arc small boss with the height such as the back side of said side plate body symmetrically.
Said " ω " concave surface is than the side plate thickness of the low about 1/12-1/11 in plane at place, the said side plate body back side.
On the end of said " ω " shape seal ring, by said end towards the on high-tension side sidewall of the said side plate body radian that stretches out, to increase the radian that said end contacts with said pump housing inner chamber.The technique scheme of the utility model is compared existing technology and is had the following advantages; 1, in the utility model; On the arc high pressure concave surface; The sealing area that between part that low pressure area one side is extended and said low pressure area, keeps about 1 to 2 formed corner dimension of tooth from driving gear axis hole and the driven gear axis hole line of centres; When such design can reduce in the gear pump radial force largely, also guaranteed higher volumetric efficiency, prevented undue expansion the in gear pump zone of high pressure and cause gear pump inner high voltage district and low pressure area liquid mixing and influence the volumetric efficiency of gear pump; 2, in the utility model; The position corresponding with the suction side of the pump housing, the front of side plate forms the low pressure concave surface; The setting of arc high pressure concave surface and low pressure concave surface not only helps reducing the radial force that gear pump produces when work; Also reduce the friction area between floating side plate and the gear face, thereby helped improving the working pressure and the mechanical efficiency of gear pump; 3, in the utility model, the radian of the end of seal ring suitably increases, and can increase the end of seal ring and the seal length of pump housing inner chamber, thereby improves the reliability of sealing.
Description of drawings
For the content that makes the utility model is more clearly understood,, the utility model is done further detailed explanation, wherein below according to the specific embodiment of the utility model and combine accompanying drawing
Fig. 1 is the positive schematic representation of floating side plate of the utility model;
Fig. 2 is the schematic representation at the floating side plate back side of the utility model.
Reference character is expressed as among the figure: 1-" ω " shape seal ring, 2-driving gear axis hole, 3-driven gear axis hole, 4-arc small boss, 5-end, 6-" ω " shape back-up ring 7-arc high pressure concave surface, 8-low pressure concave surface, 9-high pressure side compensating groove, 10-low voltage side compensating groove, 11-straight trough, 12-" ω " shape seal groove.
Embodiment
Extremely shown in Figure 2 like Fig. 1; The floating side plate of a kind of high-pressure gear pump of present embodiment; Comprise the side plate body that is " 8 " font, form driving gear axis hole 2 and driven gear axis hole 3 on the said side plate body, the front of said side plate body; Form with the zone of high pressure of the pump housing of gear pump with the corresponding outer rim place of tooth portion of the driving and driven gear of gear pump and to communicate, and the arc high pressure concave surface 7 that extends to low pressure area by the said zone of high pressure of the said pump housing; The back side of said side plate body forms " ω " shape seal groove 12 of installation " ω " shape seal ring 1 and " ω " shape back-up ring 6 with said arc high pressure concave surface 7 corresponding positions; On the said arc high pressure concave surface 7, between part that said low pressure area one side is extended and said low pressure area, keep the sealing area of about 1 to 2 formed corner dimension of tooth from said driving gear axis hole 2 and said driven gear axis hole 3 lines of centres.Such design can either reduce the radial force in the pump housing largely, prevents that the pump housing inwall low voltage side place from being scraped shell; Driving and driven gear shaft bending deflection under the effect of big radial force, and the bearing place is worn etc., the incorrect expansion that can also prevent the zone of high pressure simultaneously make the liquid mixing of zone of high pressure and low pressure area, thus the volumetric efficiency of reduction gear pump.
The front of said side plate, the position corresponding with the suction side of the said pump housing forms low pressure concave surface 8.The setting of said low pressure concave surface 8 has reduced gear face and the positive friction area of side plate.Said arc high pressure concave surface 7, said low pressure concave surface 8 are all than the side plate thickness on the plane low about 1/11 at the positive place of said side plate.Certainly, in other embodiments, said arc high pressure concave surface 7, said low pressure concave surface 8 are all than the side plate thickness on the plane low about 1/12 at the positive place of said side plate.
On the front of said side plate body, the position of discharging side corresponding near the hydraulic oil driving and driven gear meshing place forms high pressure side compensating groove 9; On the front of said floating side plate, form low voltage side compensating groove 10 corresponding near the position of the hydraulic oil suction side said engagement place, and the end towards said zone of high pressure of said arc high pressure concave surface 7 originates in said high pressure side compensating groove 9 trough rims.
In the present embodiment, said low pressure compensating groove 10 is the straight trough 11 of the driving and driven gear axis hole 3 of a communication.High pressure side compensating groove 9 communicates with the oil pocket that goes out of gear pump, and offering of low voltage side compensating groove 10 not only helps the lubricated of bearing, also realizes the circulation of bearing place hydraulic oil, the oil liquid temperature at bearing place in the time of reducing work.
Said " ω " shape seal groove 12 is " ω " concave surface along said side plate body outer rim moulding, and the outer rim place of said " ω " concave surface forms the arc small boss 4 with the height such as the back side of said side plate body symmetrically.The back side that is arranged so that the side plate body of arc the small boss 4 and stationary barrier on the gear pump can steadily be fitted and make floating side plate not produce inclination.Said " ω " concave surface is than the side plate thickness on the plane low about 1/11 at place, the said side plate body back side.On the end 5 of said " ω " shape seal ring 1, by said terminal 5 towards the on high-tension side sidewall of the said side plate body radian that stretches out, to increase by said terminal 5 radians that contact with the said pump housing.Said terminal 5 radian suitably increases, and can increase the end 5 of seal ring and the seal length of the pump housing " 8 " font inner chamber, thereby improve the reliability of sealing.
Obviously, the foregoing description only be for explanation clearly done for example, and be not qualification to mode of execution.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all mode of executions.And conspicuous variation of being extended out thus or change still are among the protection domain of the utility model creation.
Claims (8)
1. the floating side plate of a high-pressure gear pump; Comprise the side plate body that is " 8 " font; Form driving gear axis hole (2) and driven gear axis hole (3) on the said side plate body; The front of said side plate body, form with the zone of high pressure of the pump housing of gear pump with the corresponding outer rim place of tooth portion of the driving and driven gear of gear pump and to communicate, and the arc high pressure concave surface (7) that extends to low pressure area by the said zone of high pressure of the said pump housing; The back side of said side plate body forms " ω " shape seal groove (12) of installation " ω " shape seal ring (1) and " ω " shape back-up ring (6) with the corresponding position of said arc high pressure concave surface (7); It is characterized in that: on the said arc high pressure concave surface (7), between part that said low pressure area one side is extended and said low pressure area, keep the sealing area of about 1 to 2 formed corner dimension of tooth from said driving gear axis hole (2) and said driven gear axis hole (3) line of centres.
2. the floating side plate of a kind of high-pressure gear pump according to claim 1, it is characterized in that: the front of said side plate, the position corresponding with the suction side of the said pump housing forms low pressure concave surface (8).
3. the floating side plate of a kind of high-pressure gear pump according to claim 2 is characterized in that: the side plate thickness that said arc high pressure concave surface (7), said low pressure concave surface (8) all hang down about 1/12-1/11 than the plane at the positive place of said side plate.
4. according to the floating side plate of each described a kind of high-pressure gear pump among the claim 1-3; It is characterized in that: on the front of said side plate body, the position of discharging side corresponding near the hydraulic oil driving and driven gear meshing place forms high pressure side compensating groove (9); On the front of said floating side plate; Position corresponding near the hydraulic oil suction side said engagement place forms low voltage side compensating groove (10), and the end towards said zone of high pressure of said arc high pressure concave surface (7) originates in said high pressure side compensating groove (9) trough rim.
5. the floating side plate of a kind of high-pressure gear pump according to claim 4 is characterized in that: said low pressure compensating groove (10) is one to link up the straight trough (11) of driving and driven gear axis hole (3).
6. the floating side plate of a kind of high-pressure gear pump according to claim 5; It is characterized in that: the high pressure compensation district that said " ω " shape seal groove (12) is separated is " ω " concave surface along the moulding of said side plate body outer rim, and the outer rim place of said " ω " concave surface forms the arc small boss (4) with the height such as the back side of said side plate body symmetrically.
7. the floating side plate of a kind of high-pressure gear pump according to claim 6 is characterized in that: the side plate thickness that said " ω " concave surface hangs down about 1/12-1/11 than the plane at place, the said side plate body back side.
8. the floating side plate of the described a kind of high-pressure gear pump of claim 7; It is characterized in that: on the end (5) of said " ω " shape seal ring (1); By said end (5) towards the on high-tension side sidewall of the said side plate body radian that stretches out, to increase the radian that said end (5) contacts with the said pump housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204225862U CN202391731U (en) | 2011-10-31 | 2011-10-31 | Floating side plate of high-pressure gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204225862U CN202391731U (en) | 2011-10-31 | 2011-10-31 | Floating side plate of high-pressure gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202391731U true CN202391731U (en) | 2012-08-22 |
Family
ID=46666661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204225862U Expired - Lifetime CN202391731U (en) | 2011-10-31 | 2011-10-31 | Floating side plate of high-pressure gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202391731U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762619A (en) * | 2016-12-06 | 2017-05-31 | 泸州长江液压密封件有限公司 | W type sealing gear pump circles |
| CN106837784A (en) * | 2017-04-07 | 2017-06-13 | 夏三华 | It is a kind of to be suitable to the gear pump that the whole network distribution transmission ＆ distribution heating system is used |
| CN107269520A (en) * | 2017-07-17 | 2017-10-20 | 常州大学 | Magnetic compensation floating side plate sub-assembly |
| 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 |
-
2011
- 2011-10-31 CN CN2011204225862U patent/CN202391731U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762619A (en) * | 2016-12-06 | 2017-05-31 | 泸州长江液压密封件有限公司 | W type sealing gear pump circles |
| CN106837784A (en) * | 2017-04-07 | 2017-06-13 | 夏三华 | It is a kind of to be suitable to the gear pump that the whole network distribution transmission ＆ distribution heating system is used |
| CN106837784B (en) * | 2017-04-07 | 2018-08-21 | 夏三华 | A kind of gear pump used suitable for the whole network distribution transmission ＆ distribution heating system |
| CN107269520A (en) * | 2017-07-17 | 2017-10-20 | 常州大学 | Magnetic compensation floating side plate sub-assembly |
| CN107269520B (en) * | 2017-07-17 | 2019-01-29 | 常州大学 | Magnetic compensation floating side plate sub-assembly |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120822 |
|
| CX01 | Expiry of patent term |