CN201190664Y - Elastic gear pump - Google Patents
Elastic gear pump Download PDFInfo
- Publication number
- CN201190664Y CN201190664Y CNU2008201016628U CN200820101662U CN201190664Y CN 201190664 Y CN201190664 Y CN 201190664Y CN U2008201016628 U CNU2008201016628 U CN U2008201016628U CN 200820101662 U CN200820101662 U CN 200820101662U CN 201190664 Y CN201190664 Y CN 201190664Y
- Authority
- CN
- China
- Prior art keywords
- gear
- teeth
- pump
- driven gear
- driving gear
- 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 - Fee Related
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- 239000007788 liquid Substances 0.000 claims abstract description 20
- 229920001971 elastomer Polymers 0.000 claims abstract description 12
- 239000005060 rubber Substances 0.000 claims abstract description 11
- 229920006351 engineering plastic Polymers 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000007787 solid Substances 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 4
- 239000008187 granular material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910001339 C alloy Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000677 High-carbon steel Inorganic materials 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
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- Rotary Pumps (AREA)
Abstract
The utility model discloses an elasticity gear pump for pump sending low viscosity liquid, it includes the pump body, driven shaft, driven gear, driving gear, pump shaft etc. and the characteristic is that the driving gear constitutes by wheel hub, the teeth of a cogwheel and rim with driven gear, has the elasticity teeth of a cogwheel and the elasticity rim of being made by rubber at wheel hub's external fixation. The number of teeth of the driven gear is less than that of the driving gear. Because the gear teeth of the driving gear and the driven gear are elastic, when small solid particles are clamped between the gear teeth or between the gear and the pump shell, the gear teeth and the wheel rim can deform, and the solid particles can be clamped in the gear teeth or the wheel rim to operate under the condition that related kinematic pairs are not scratched or clamped, and move along with liquid to a liquid outlet of the gear pump until the liquid is discharged out of the pump. Therefore, the utility model has the advantages of mechanical efficiency is high, the noise reduces by a wide margin, simple structure, low in manufacturing cost, small, power density is higher.
Description
Technical field
The utility model relates to gear pump, especially relates to a kind of Elastic Teeth wheel pump that is used for pumping low viscosity, unlubricated property and the solid-state granule liquid of a small amount of hard is arranged.
Background technique
The conventional tooth wheel pump has simple in structure, low cost of manufacture, volume is little, specific power is higher, advantage such as can under the suction lift of different rotating speeds and broad and delivery pressure, work, but because driving gear, driven gear, pump shaft, driven shaft generally uses through heat treated high carbon steel or high-carbon alloy steel manufacturing, and the material of the pump housing is generally higher cast iron of hardness or the heat treated high-carbon alloy steel of process, so driving gear, exist large size firmly to the mutual friction mutually (gap between gear and pump case is very little) of hard surface of contact between the end face of driven gear and the pump case and between the gear of driving gear and driven gear, therefore mainly to be used to pumping viscosity higher always for the conventional tooth wheel pump, the liquid that lubricity is arranged, and be used to the pumping low viscosity when it, when not having the liquid of lubricity, the power loss that friction between its each kinematic pair causes makes the mechanical efficiency of gear pump significantly reduce, the abrasion of correlated parts also sharply increase in the gear pump, running noise strengthens, in the liquid as contain the small amount of solid state grit, then more can make the wearing and tearing aggravation of gear pump, even cause getting stuck of gear pump, can not turn round.
In addition, the driving gear of conventional tooth wheel pump is the same with the number of teeth of driven gear, along with the increase of the number of teeth, from the gear to the pump cover, the pump housing etc., to such an extent as to the boundary dimension of whole gear pump is all followed increase, makes very difficulty of processing, and cost increases substantially.
Summary of the invention
The purpose of this utility model is to provide that a kind of mechanical efficiency height, noise reduce significantly, simple in structure, low cost of manufacture, volume is little, specific power is higher Elastic Teeth wheel pump, its driving gear and driven gear are made by elastomer, noise reduces significantly when making running, can be used to pumping low viscosity, unlubricated property and the solid-state short grained liquid of a small amount of hard is arranged.
The purpose of this utility model is achieved in that the utility model comprises the pump housing, front cover, driven shaft, driven gear seal ring, driven gear, bearing cap seal ring, bearing cap sealing gasket, shaft seal circle, driving gear, pump shaft and rear end cover, on the pump housing, be processed with liquid entering hole and liquid outlet, driven gear and driving gear engagement, feature is that driving gear and driven gear constitute by wheel hub, wheel rim and the gear teeth, is fixed with the flexible wheel rim and the flexible gear teeth of being made by rubber at the outer surface of wheel hub.
The number of teeth of described driven gear is less than the number of teeth of driving gear.
For reducing area of contact between driving gear and driven gear and front cover, the rear end cover inwall, be processed with inner groovy at two end faces of driving gear and driven gear with the resistance of reducing friction.
The pump shaft bearing is installed between the pump shaft and the pump housing, front bearing retainer is installed on front cover, rear bearing cover is installed on rear end cover, the driven shaft bearing is installed between driven gear and driven shaft.
The utility model since driving gear and driven gear by wheel hub, the wheel rim and the gear teeth constitute, and the outer surface at wheel hub is fixed with the flexible wheel rim and the flexible gear teeth of being made by rubber, thereby the gear teeth of driving gear and driven gear all have elasticity, be stuck in the master as the solid-state granule of a small amount of, between the gear teeth of driven gear or main, in the time of between driven gear and the pump case, main, the gear teeth of driven gear, wheel rim can deform, solid-state granule can be clipped in wherein running under the situation that does not scratch or block relevant kinematic pair, and with the liquid outlet motion of liquid toward gear pump, outside being discharged from pump, and noise in the running also reduces significantly.The pump shaft bearing is installed between the pump shaft and the pump housing, the driven shaft bearing is installed between driven gear and driven shaft, further to reduce gear pump surface friction drag in the running.The utility model takes only to increase the number of teeth of driving gear, and allow the number of teeth of driven gear under the precondition of the relevant performance index that satisfy pump, remain on the less number of teeth (being about 6～12 teeth) of permission---be the method that the number of teeth of driven gear is less than the number of teeth of driving gear, reached the purpose that increases pump delivery equally, and pump structure, the increasing degree of boundary dimension but reduces greatly, the weight of pump is also alleviated, volume reduces, materials consumption and processing charges in the production process of pump have been reduced, reduced cost of production, this is requiring big flow, the rotating speed of pump again can not be too high occasion, effect is especially remarkable.Therefore, the utlity model has that mechanical efficiency height, noise reduce significantly, simple in structure, low cost of manufacture, advantage that volume is little.
Because the damping function of elastic material, the flow of output liquid particularly pressure pulsation is low than the conventional tooth wheel pump, therefore, the utility model also can be used for to pump noise, to the tighter occasion of pressure pulsation control of output liquid, replace traditional gear pump work.Generally speaking, the wheel hub of gear also can adopt the rubber manufacturing.When the delivery pressure that requires pump higher, and when treating that fed sheet of a media has certain lubricity, for improving the intensity of gear, the hub portion of gear should adopt high-intensity metallic material or engineering plastics manufacturing, and does not need to reprocess inner groovy at two end faces of driving gear and driven gear.
Description of drawings
Fig. 1 is a sectional structure schematic representation of the present utility model;
Fig. 2 is the plan view of Fig. 1.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the utility model is described in further detail.
The utility model comprises the pump housing 1, front cover 2, driven shaft 3, driven gear seal ring 4, driven gear 6, shaft seal circle 12, driving gear 13, key 17, pump shaft 18 and rear end cover 25, on the pump housing 1, be processed with liquid entering hole 26 and liquid outlet 27, driven gear 6 and driving gear 13 engagements, driving gear 13 links together by key 17 with pump shaft 18, driving gear 13 is by driving gear wheel hub 16, the driving gear gear teeth 14 and driving gear wheel rim 15 constitute, outer surface at the driving gear wheel hub of being made by metallic material or engineering plastics 16 is fixed with the flexible driving gear gear teeth 14 and the flexible driving gear wheel rim of being made by rubber 15, driven gear 6 is by driven gear wheel hub 24, the driven gear gear teeth 21 and driven gear wheel rim 22 constitutes, and is fixed with the flexible driven gear gear teeth 21 and the flexible driven gear wheel rim of being made by rubber 22 at the outer surface of the driven gear wheel hub of being made by metallic material or engineering plastics 24.
The number of teeth of the driven gear gear teeth 21 of described driven gear 6 is less than the number of teeth of the driving gear gear teeth 14 of driving gear 13.
For reducing area of contact between driving gear 13 and driven gear 6 and front cover 2, rear end cover 25 inwalls with the resistance of reducing friction, two end faces at driving gear 13 are processed with driving gear inner groovy 7, are processed with driven gear inner groovy 5 at two end faces of driven gear 6.
Between pump shaft 18 and front cover 2, rear end cover 25, pump shaft bearing 11 is installed, front bearing retainer 9, front bearing retainer seal ring 8 and front bearing retainer sealing gasket 10 are installed on front cover 2, rear bearing cover 19 and rear bearing cover seal ring 20 are installed on rear end cover 25, between driven gear 6 and driven shaft 3, driven shaft bearing 23 are installed.
Described rubber can be General Purpose Rubber (as: butadiene rubber), specific rubber (as: polyurethane elastomer) or thermoplastic elastomer (TPE) (as: polyesters thermoplastic elastomer (TPE)).
In addition, driving gear 13 and pump shaft 18, driven gear 6 and driven shaft 3 also all can be made of one.
Claims (4)
1, a kind of Elastic Teeth wheel pump that is used for the pumping low-viscosity (mobile) liquid, comprise the pump housing (1), front cover (2), driven shaft (3), driven gear seal ring (4), driven gear (6), shaft seal circle (12), driving gear (13), pump shaft (18) and rear end cover (25), on the pump housing (1), be processed with liquid entering hole (26) and liquid outlet (27), driven gear (6) and driving gear (13) engagement, it is characterized in that: driving gear (13) is by driving gear wheel hub (16), the driving gear gear teeth (14) and driving gear wheel rim (15) constitute, outer surface at the driving gear wheel hub of being made by metallic material or engineering plastics (16) is fixed with the flexible driving gear gear teeth (14) and the flexible driving gear wheel rim of being made by rubber (15), driven gear (6) is by driven gear wheel hub (24), the driven gear gear teeth (21) and driven gear wheel rim (22) constitute, and are fixed with the flexible driven gear gear teeth (21) and the flexible driven gear wheel rim of being made by rubber (22) at the outer surface of the driven gear wheel hub of being made by metallic material or engineering plastics (24).
2, Elastic Teeth wheel pump as claimed in claim 1 is characterized in that: the number of teeth of the driven gear gear teeth (21) of described driven gear (6) is less than the number of teeth of the driving gear gear teeth (14) of driving gear (13).
3, Elastic Teeth wheel pump as claimed in claim 1 or 2 is characterized in that: two end faces at driving gear (13) are processed with driving gear inner groovy (7), are processed with driven gear inner groovy (5) at two end faces of driven gear (6).
4, Elastic Teeth wheel pump as claimed in claim 4, it is characterized in that: between pump shaft (18) and front cover (2), rear end cover (25), pump shaft bearing (11) is installed, front bearing retainer (9), front bearing retainer seal ring (8) and front bearing retainer sealing gasket (10) are installed on front cover (2), rear bearing cover (19) and rear bearing cover seal ring (20) are installed on rear end cover (25), between driven gear (6) and driven shaft (3), driven shaft bearing (23) are installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201016628U CN201190664Y (en) | 2008-03-14 | 2008-03-14 | Elastic gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201016628U CN201190664Y (en) | 2008-03-14 | 2008-03-14 | Elastic gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201190664Y true CN201190664Y (en) | 2009-02-04 |
Family
ID=40334825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201016628U Expired - Fee Related CN201190664Y (en) | 2008-03-14 | 2008-03-14 | Elastic gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201190664Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994691A (en) * | 2010-09-30 | 2011-03-30 | 张良 | Gear pump liquid supercharging equipment, and production process and application thereof |
| CN103453123A (en) * | 2013-08-02 | 2013-12-18 | 浙江吉利汽车研究院有限公司 | Seal structure and seal ring with same |
| CN109278539A (en) * | 2018-11-05 | 2019-01-29 | 中国科学院沈阳自动化研究所 | A kind of wheeled robot Omni-mobile chassis |
-
2008
- 2008-03-14 CN CNU2008201016628U patent/CN201190664Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994691A (en) * | 2010-09-30 | 2011-03-30 | 张良 | Gear pump liquid supercharging equipment, and production process and application thereof |
| CN103453123A (en) * | 2013-08-02 | 2013-12-18 | 浙江吉利汽车研究院有限公司 | Seal structure and seal ring with same |
| CN103453123B (en) * | 2013-08-02 | 2016-04-27 | 浙江吉利汽车研究院有限公司 | The seal ring of a kind of sealing configuration and sealing structure |
| CN109278539A (en) * | 2018-11-05 | 2019-01-29 | 中国科学院沈阳自动化研究所 | A kind of wheeled robot Omni-mobile chassis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090204 Termination date: 20120314 |