CN204283881U - A kind of gear pump - Google Patents
A kind of gear pump Download PDFInfo
- Publication number
- CN204283881U CN204283881U CN201420759977.7U CN201420759977U CN204283881U CN 204283881 U CN204283881 U CN 204283881U CN 201420759977 U CN201420759977 U CN 201420759977U CN 204283881 U CN204283881 U CN 204283881U
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- CN
- China
- Prior art keywords
- gear
- pump housing
- pump
- driving gear
- driven 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
Links
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- Rotary Pumps (AREA)
Abstract
The utility model relates to field of mechanical technique, a kind of gear pump specifically, comprise first pump housing, second pump housing, driving gear, driven gear, major axis, minor axis and inner can, driving gear and driven gear are meshed, the first described pump housing and second pump housing are connected, inner can is provided with tap hole, first pump housing, inner can, driving gear and driven gear form suction chamber, inner can becomes discharge side with the cavity groups between first pump housing and second pump housing, and described inner can and driving gear and driven gear side and crown are fitted completely.The utility model advantage is: be positioned at both sides to traditional suction chamber and discharge side and make improvement, solve the unbalanced problem of radial force, improve the suction performance of gear pump, the working environment of high and low rotating speed can be applicable to, smooth running, make the life-span longer, decrease liquid flowing loss, avoid leaking and entrap phenomenon, structure is more reliable, and cost is lower, be applicable to produce in enormous quantities.
Description
[technical field]
The utility model relates to field of mechanical technique, specifically a kind of gear pump that can be applicable to every profession and trade.
[background technique]
Along with the growth of population comes into one's own day by day in expanding economy energy problem, especially China, energy saving becomes more and more important.For strengthening ensures the saving energy sense of enterprise, China likely starts more severe lever of price to productive power, and therefore, energy-saving just becomes an important directions of current gear pump development.
As a principal item of pump, gear pump is through a lot of important development and change.Traditional gear pump relies on the swept volume formed between pumping cylinder and engaging gear to change and the mobile rotary pump carried liquid or make it supercharging.Generally form two enclosed spaces by two gears, the pump housing and front and rear covers, gear pump by a pair pitch wheel and pumping cylinder, suction chamber and discharge side is separated, suction chamber and discharge side lay respectively at gear both sides, when pinion rotation, the inter-tooth volume of suction chamber side gear teeth disengagement place mutually increases gradually, and pressure reduces, form vacuum, liquid enters between cog under differential pressure action, and along with the rotation of gear, the liquid of between cog is taken to discharge side one by one.At this moment the inter-tooth volume of discharge side side wheel tooth engagement place reduces gradually, and is discharged by liquid, and the pressure of the exhaust port of gear pump depends on the size of pump discharge place resistance completely.
But existing gear pump due to two cavity pressures be uneven, radial force is uneven, closed volume because of gear intersection some hydraulic oil normal is sealed between cog, easily there is pocketed oil or leakage phenomenon, thus cause bearing load to increase, easily produce vibration and noise, volumetric efficiency reduces, power loss is large, reduces bearing life, and impact normally works.
[summary of the invention]
The purpose of this utility model lays respectively at gear both sides cause radial force uneven to solve traditional gear pump suction chamber and discharge side, easily occurs the technical problem of pocketed oil or leakage phenomenon, design a kind of gear pump of novel structure.
To achieve these goals, a kind of gear pump is provided, comprise first pump housing, second pump housing, driving gear, driven gear, major axis, minor axis and inner can, driving gear and driven gear are meshed, the first described pump housing and second pump housing are connected, first pump housing and the second pump housing joint are provided with a cavity, inner can is provided with in cavity, described inner can offers two circular holes, major axis and minor axis is inserted respectively in circular hole, described major axis connects driving gear, minor axis connects driven gear, inner can is provided with tap hole, first pump housing, inner can, driving gear and driven gear form suction chamber, inner can becomes discharge side with the cavity groups between first pump housing and second pump housing, described inner can and driving gear and driven gear side and crown are fitted completely.
Described inner can is in the form of annular discs.
Described discharge side diameter is greater than inner can diameter.
Described major axis and driving gear are arranged in the middle part of gear pump, and driven gear and minor axis are arranged at driving gear side.
The utility model compared with the existing technology, its advantage is: present patent application makes improvement to the structure that traditional suction chamber and discharge side are positioned at both sides, suction chamber is provided with in first pump housing, isolate with inner can and discharge side, first pump housing and the second pump housing joint are provided with discharge side, pressure in discharge side is equal to outlet pressure, discharge side pressure is higher, it is tighter that the side of inner can and gear and crown are fitted, that reveals is less, also can carry out auto-compensation to the wearing and tearing of gear simultaneously, solve radial force imbalance, gear wear auto-compensation, reduce vent flow problem, thus improve suction performance and the efficiency of gear pump, case is not completely fixed, and can adapt to optimum size voluntarily along with actual conditions, thus improving performance, cavity between gear and inner can and non-fully sealing, alleviate pocketed oil problem, can be applicable to the working environment of high and low rotating speed, smooth running, make the life-span longer, novel structure is reliable, and cost is lower, can provide the pressure higher than general gear pump and regime flow under high pressures, is applicable to produce in enormous quantities.
[accompanying drawing explanation]
Fig. 1 is assembling schematic diagram of the present utility model;
Fig. 2 is sectional drawing of the present utility model;
Fig. 3 is the plotted curve of traditional gear pump;
Fig. 4 is the plotted curve of gear pump of the present utility model;
Wherein: 1. driving gear 2. driven gear 3. major axis 4. minor axis 5. inner can 6. second pump housing 5. first pump housing;
Specify Fig. 1 as Figure of abstract of the present utility model.
[embodiment]
Below in conjunction with accompanying drawing, the utility model is described in further detail, and the structure of this device and principle are very clearly concerning the people of this specialty.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment 1
As shown in Figures 1 and 2, gear pump in the utility model comprises first pump housing, second pump housing, driving gear, driven gear, major axis, minor axis and inner can, driving gear and driven gear are meshed, first pump housing and second pump housing are connected, first pump housing and the second pump housing joint are provided with a cavity, inner can is provided with in cavity, inner can offers two circular holes, major axis and minor axis is inserted respectively in circular hole, major axis connects driving gear, minor axis connects driven gear, inner can is provided with tap hole, first pump housing, inner can, driving gear and driven gear form suction chamber, inner can becomes discharge side with the cavity groups between first pump housing and second pump housing, discharge side diameter is greater than inner can diameter, inner can and driving gear and driven gear side and crown are fitted completely, inner can is in the form of annular discs or can respective shapes customized as required.
Major axis and driving gear are arranged in the middle part of gear pump, and driven gear and minor axis are arranged at driving gear side.
Gear pump operationally, driving gear rotates under motor drives, driving gear drives driven gear to carry out engagement rotation, in the process that engagement rotates, first pump housing, inner can, driving gear and driven gear form liquid in suction chamber and are sent to by the region between driving gear and the gear of driven gear the discharge side that inner can and the cavity between first pump housing and second pump housing form, and then are discharged by tap hole.
As shown in Figures 3 and 4, Fig. 3 is the curve synoptic diagram of the conventional tooth wheel pump 0.34cc/rev (milliliter/turn) of market purchasing, Fig. 4 is the curve synoptic diagram of gear pump 0.34cc/rev of the present utility model (milliliter/turn), can see that the utility model can provide the pressure higher than general gear pump and regime flow under high pressures, performance and the efficiency of entirety are high.
Conventional tooth wheel pump, due to structure, has gap to exist between gear and the pump housing, otherwise gear can be caused not rotate, and can increase with the increase gap of pressure.And this patent is due to the reason of structural design, can not need there is gap between gear and the pump housing, inner can is fitted in gear side and crown completely, because inner can is not fastening installation, that elastic covering is on gear, even if therefore the gear that also can not cause very close to each other can not rotate, and along with the higher inner can of pressure just paste tighter, leak fewer.Because inner can is the mode that elasticity is installed, automatically can compensate with the wearing and tearing of gear and inner can, therefore the life-span is longer than traditional gear pump, process and maintenance industry simple.
Conventional tooth wheel pump makes drive bearing be subject to high radial force and entrap phenomenon due to the high pressure of discharge side, and the structure of this patent makes transmission shaft be placed in completely in discharge side, do not bear radial force, only bear from a small amount of radial force of inner can, due to the existence of inner can tap hole, therefore also without entrap phenomenon.
Claims (4)
1. a gear pump, comprise first pump housing, second pump housing, driving gear, driven gear, major axis, minor axis and inner can, driving gear and driven gear are meshed, the first described pump housing and second pump housing are connected, it is characterized in that first pump housing and the second pump housing joint are provided with a cavity, inner can is provided with in cavity, described inner can offers two circular holes, major axis and minor axis is inserted respectively in circular hole, described major axis connects driving gear, minor axis connects driven gear, inner can is provided with tap hole, first pump housing, inner can, driving gear and driven gear form suction chamber, inner can becomes discharge side with the cavity groups between first pump housing and second pump housing, described inner can and driving gear and driven gear side and crown are fitted completely.
2. a kind of gear pump as claimed in claim 1, is characterized in that described inner can is in the form of annular discs.
3. a kind of gear pump as claimed in claim 1, is characterized in that described discharge side diameter is greater than inner can diameter.
4. a kind of gear pump as claimed in claim 1, it is characterized in that described major axis and driving gear are arranged in the middle part of gear pump, driven gear and minor axis are arranged at driving gear side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420759977.7U CN204283881U (en) | 2014-12-04 | 2014-12-04 | A kind of gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420759977.7U CN204283881U (en) | 2014-12-04 | 2014-12-04 | A kind of gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204283881U true CN204283881U (en) | 2015-04-22 |
Family
ID=52867046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420759977.7U Expired - Fee Related CN204283881U (en) | 2014-12-04 | 2014-12-04 | A kind of gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204283881U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481871A (en) * | 2014-12-04 | 2015-04-01 | 上海缔魅流体技术中心 | Gear pump |
-
2014
- 2014-12-04 CN CN201420759977.7U patent/CN204283881U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481871A (en) * | 2014-12-04 | 2015-04-01 | 上海缔魅流体技术中心 | Gear pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 |