CN2799913Y - Gear pump with arc teeth profile - Google Patents
Gear pump with arc teeth profile Download PDFInfo
- Publication number
- CN2799913Y CN2799913Y CN 200520073023 CN200520073023U CN2799913Y CN 2799913 Y CN2799913 Y CN 2799913Y CN 200520073023 CN200520073023 CN 200520073023 CN 200520073023 U CN200520073023 U CN 200520073023U CN 2799913 Y CN2799913 Y CN 2799913Y
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- CN
- China
- Prior art keywords
- gear
- driving gear
- driven gear
- end cover
- pump
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- 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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Abstract
The utility model discloses an arc-shaped gear pump, which belongs to the technical field of gear pumps. The utility model comprises a pump body, a front end cover, a rear end cover, a driving gear and a driven gear, wherein the driving gear and the driven gear are arranged in the pump body and are outwards engaged. The front end cover and the rear end cover are respectively arranged on both sides of the driving gear and the driven gear. A driving gear shaft penetrates through the front cover. The driving gear, the lateral surface of the driven gear and a tooth top surface are relatively sealed, and a suction port and a discharging port are arranged on the pump body. The suction port and the discharging port are isolated by the driving gear and the driven gear, and the driving gear and the driven gear are arc tooth-shaped cylindrical gears. The utility model has the advantages of keeping the advantages of simple structure, small size, low cost and little sensitivity to oil pollution of a straight-tooth gear pump, almost eliminates oil entrapping phenomenon, and simultaneously also has the advantages of high running efficiency, high output pressure, small flow pulsation and low noise.
Description
Technical field
The utility model relates to a kind of gear pump.
Background technique
A kind of straight-tooth external gear pump is arranged in the prior art, mainly constitute by the pump housing, end cap, driving gear and driven gear etc., driving gear is arranged on the interior and outer gearing mutually of the pump housing with driven gear, the two ends drowning is put the both sides at driving gear and driven gear, the end face of driving gear and driven gear and both sides are respectively the pump housing and two end cap is surrounded, the pump housing is provided with suction port and exhaust port, and is isolated by driving gear and driven gear between described suction port and the exhaust port; When this gear pump was worked, driving gear drove driven tooth crop rotation rotation motion, and the liquid that is full of teeth groove is constantly taken to exhaust port, and discharges continuously from exhaust port, realizes the transportation by lighter or the supercharging of oil or other liquid.At present, this straight-tooth external gear pump is a kind of application pump more widely, because it is simple in structure, volume is little, manufacturing is easier to relatively, and suction capacity is strong, and is responsive relatively little to oil pollution, and is again that price is relatively low.It also exists its intrinsic defective but in actual use: big as flow pulsation, entrap phenomenon is more serious etc.; For guaranteeing the continuity of its motion, therefore the overlap coefficient of gear engagement must the phenomenon that two pairs of teeth mesh simultaneously will inevitably occur in the course of the work greater than 1, causes entrap phenomenon; Although spurgear pump adopts in structural design and opens compensating groove, though this design can be eliminated entrap phenomenon substantially, the operational efficiency generation certain influence to pump also influences the raising of spurgear pump delivery pressure simultaneously.In addition, because flow pulsation is bigger, makes and executive component speed shakiness cause vibration and noise during the straight-tooth gear pump work.
The model utility content
The purpose of this utility model just is to overcome above-mentioned defective, designs a kind of curved tooth gear pump, makes that it operates steadily, delivery pressure height, noise be low.
For achieving the above object, the utility model mainly is made up of the pump housing, front cover, rear end cover, driving gear and driven gear etc., driving gear is arranged on the interior and outer gearing mutually of the pump housing with driven gear, front cover, rear end cover are separately positioned on the both sides of driving gear and driven gear, driving gear shaft passes front cover, the side of driving gear and driven gear is relative with Topland to be sealed, the pump housing is provided with suction port and exhaust port, and is isolated by driving gear and driven gear between described suction port and the exhaust port; Described driving gear and driven gear are arc cylindrical gear.
The utility model adopts arc cylindrical gear, the transmission that realizes liquid by the arc cylindrical gear auxiliary driving with boost, curved tooth has two kinds of possible engagement situations in intermeshing process, one is the engagement earlier of gear middle part, meshes behind the gear edge, and it two is: the gear both sides are engagement earlier, the engagement of back, middle part, the something in common of both of these case is: the part of engagement presses to the part that mesh the back with the liquid of between cog earlier, and then liquid is arranged to discharge side, does not have the entrap phenomenon of gear pump substantially; Arc cylindrical gear is compared with straight toothed spur gear has bigger gear engagement contact ratio, can make pump operation stable like this, vibration and noise are little, simultaneously, has solved the problem of the rapid take-off and landing of straight-tooth gear pumping flow pulsation, executive component speed shakiness.Advantage of the present utility model be kept that spurgear pump is simple in structure, volume is little, cost is low, the advantage responsive little to oil pollution, also have operational efficiency height, delivery pressure height, flow pulsation is little, noise is low advantage simultaneously, and eliminate entrap phenomenon basically.
For the bearing capacity that makes curved tooth is even, during running engagement good, the tooth trace of this arc cylindrical gear is the part of circular arc, flank profil is involute or circular arc, transverse tooth thickness is circumferentially equating.
For the end face that reduces described driving gear and driven gear is revealed, be positioned at rear end cover one side on driving gear shaft and the driven gear shaft and be respectively installed with floating buss, be positioned at front cover one side on driving gear shaft and the driven gear shaft and be respectively installed with fixed axle sleeve, be provided with the pressure chamber that communicates with the zone of high pressure between rear end cover and the floating buss.During work, forming big pressure in the pressure chamber can be pressed on the floating buss other end on the gear side, thereby reduces the leakage between flank.
Description of drawings
Fig. 1 is curved tooth gear pump structure schematic representation;
Fig. 2 is curved tooth gear pump fundamental diagram;
Fig. 3 is arc cylindrical gear;
Wherein, 1 floating buss, two, 2 driven gears, 3 driving gears, 4 rear end covers, 5 fixed axle sleeves, 6 front covers, 7 driven gear shafts, 8 driving gear shafts, 9 pump housings, 10 fixed axle sleeves, 11 floating busses, one, 12 pressure chamber, 13 suction ports, 14 exhaust ports.
Embodiment
As shown in the figure, be the curved tooth gear oil pump, mainly form by the pump housing 9, front cover 6, rear end cover 4, driving gear 3 and driven gear 2 etc., driving gear 3 is arranged on the pump housing 9 interior and outer gearings mutually with driven gear 2, two end cap is arranged on the both sides of driving gear 3 and driven gear 2, driving gear shaft 8 passes front cover 6, the side of driving gear 3 and driven gear 2 is relative with Topland to be sealed, the pump housing is provided with suction port 13 and exhaust port 14, and is isolated by driving gear 3 and driven gear 2 between described suction port 13 and the exhaust port 14; Described driving gear 3 and driven gear 3 are arc cylindrical gear; The tooth trace of this arc cylindrical gear is the part of circular arc, and flank profil is involute or circular arc, and transverse tooth thickness is equating that circumferentially the circumferential transverse tooth thickness of arbitrary position equates on the promptly described arc cylindrical gear, i.e. d1=d2; Be positioned at rear end cover 4 one sides on driving gear shaft 8 and the driven gear shaft 8 and be respectively installed with floating buss, be respectively floating buss 1 and floating buss 21, be positioned at front cover 6 one sides on driving gear shaft 8 and the driven gear shaft 7 and be respectively installed with fixed axle sleeve 10, be provided with the pressure chamber 12 that communicates with the zone of high pressure between rear end cover 4 and the floating buss.
During work, drive 3 rotations of driving tooth axle by prime mover, driving tooth axle 3 drives 2 rotations of driven tooth axles, realizes the motion of curved tooth gear meshing, and gear takes liquid to by teeth groove and extrudes end from the suction side, the conveying that realizes liquid with boost.
Claims (3)
1, curved tooth gear pump, comprise the pump housing, front cover, rear end cover, driving gear and driven gear, driving gear is arranged on the interior and outer gearing mutually of the pump housing with driven gear, front cover, rear end cover are separately positioned on the both sides of driving gear and driven gear, driving gear shaft passes front cover, the side of driving gear and driven gear is relative with Topland to be sealed, and the pump housing is provided with suction port and exhaust port, isolated by driving gear and driven gear between described suction port and the exhaust port; It is characterized in that: described driving gear and driven gear are arc cylindrical gear.
2, curved tooth gear pump according to claim 1 is characterized in that: the tooth trace of described arc cylindrical gear is the part of circular arc, and flank profil is involute or circular arc, and circumferentially spacewidth equates.
3, curved tooth gear pump according to claim 1 and 2, it is characterized in that: be positioned at rear end cover one side on driving gear shaft and the driven gear shaft and be respectively installed with floating buss, be positioned at front cover one side on driving gear shaft and the driven gear shaft and be respectively installed with fixed axle sleeve, be provided with the pressure chamber that communicates with the zone of high pressure between rear end cover and the floating buss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073023 CN2799913Y (en) | 2005-06-21 | 2005-06-21 | Gear pump with arc teeth profile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073023 CN2799913Y (en) | 2005-06-21 | 2005-06-21 | Gear pump with arc teeth profile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2799913Y true CN2799913Y (en) | 2006-07-26 |
Family
ID=36842411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520073023 Expired - Fee Related CN2799913Y (en) | 2005-06-21 | 2005-06-21 | Gear pump with arc teeth profile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2799913Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141036A (en) * | 2011-04-13 | 2011-08-03 | 徐州科源液压有限公司 | High-pressure gear pump with rectangular oil inlet |
| CN102817838A (en) * | 2012-09-01 | 2012-12-12 | 合肥长源液压股份有限公司 | Full-hydraulic floating sealing-free bidirectional shaft sleeve |
| CN104482165A (en) * | 2014-11-17 | 2015-04-01 | 扬州大学 | Bidirectional arc cylindrical gear |
| CN105003432A (en) * | 2015-07-10 | 2015-10-28 | 成都科力夫科技有限公司 | Closing structure of straight tooth cylindrical external gear pump |
-
2005
- 2005-06-21 CN CN 200520073023 patent/CN2799913Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141036A (en) * | 2011-04-13 | 2011-08-03 | 徐州科源液压有限公司 | High-pressure gear pump with rectangular oil inlet |
| CN102817838A (en) * | 2012-09-01 | 2012-12-12 | 合肥长源液压股份有限公司 | Full-hydraulic floating sealing-free bidirectional shaft sleeve |
| CN104482165A (en) * | 2014-11-17 | 2015-04-01 | 扬州大学 | Bidirectional arc cylindrical gear |
| CN105003432A (en) * | 2015-07-10 | 2015-10-28 | 成都科力夫科技有限公司 | Closing structure of straight tooth cylindrical external gear pump |
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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: 20060726 Termination date: 20110621 |