CN203441744U - Oval gear pump adopting double parallel structure - Google Patents
Oval gear pump adopting double parallel structure Download PDFInfo
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- CN203441744U CN203441744U CN201320408358.9U CN201320408358U CN203441744U CN 203441744 U CN203441744 U CN 203441744U CN 201320408358 U CN201320408358 U CN 201320408358U CN 203441744 U CN203441744 U CN 203441744U
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- gear pump
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- oval
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Abstract
The utility model discloses an oval gear pump adopting the double parallel structure. The oval gear pump adopting the double parallel structure belongs to the technical field of gear pumps and comprises a drive motor and two parallel oval gear pairs arranged in a housing, wherein a baffle is arranged between the two gear pairs to divide the two gear pairs into a first sub gear pump and a second sub gear pump; the first sub gear pump comprises a first drive gear and a first driven gear; the second sub gear pump comprises a second drive gear and a second driven gear; the first drive gear and the second drive gear are fixed to a first main shaft in a staggered manner; the first driven gear and the second driven gear are mounted on a second main shaft in a floating manner. The oval gear pump adopting the double parallel structure is simple in structure and convenient to mount; the total discharge capacity is mainly dependent on the shape of an oval pitch curve but not the size of a gear module; due to the two staggered oval gear pairs, the discharge capacities of the two sub gear pumps are compensated with each other; the fluctuation of the total discharge capacity is reduced while the total discharge capacity is increased; the performance requirements on the gear pumps in various occasions are met.
Description
Technical field
The utility model belongs to gear pump technical field, is specifically related to a kind of oval gear pump of two-in-parallel structure.
Background technique
Gear pump great majority are monodentate wheel pumps that two gears form, and minority multiple gearpump is the just simple expansion of monodentate wheel pump also.Ordinary gear pump delivery depends primarily on module size, and the modulus of gear is larger, and gear pump delivery increases thereupon; Under the prerequisite remaining unchanged at the volume of pump, increase module and can increase pump delivery, but will correspondingly reduce the number of teeth.The undercut characteristic limitations of gear the minimum teeth number of gear, therefore this method is very limited for the effect that increases discharge capacity.Also there is the factor of what is called " pocketed oil " in common gear pump, pocketed oil amount is also and square being directly proportional of modulus, and while relying on increasing modulus to increase discharge capacity, also can increase pocketed oil amount, and this has just limited the performance improvement of gear pump.
Model utility content
The utility model is in order to overcome above-mentioned technological deficiency, provides a kind of and keeps under prerequisite that flow is constant, the oval gear pump of the two-in-parallel structure that pulsating quantity obviously reduces.
In order to address the above problem, the utility model is achieved by following technological scheme:
The ovum gear pump of two-in-parallel structure described in the utility model, comprise drive motor, be arranged on the gear pair in housing, in described housing, be provided with oil sucting cavity and oil-discharging cavity, on oil sucting cavity, be provided with and enter hole, on oil-discharging cavity, be provided with oil outlet, described gear pair is two groups of gear pairs that are arranged in parallel, in the middle of it, be provided with a separation panel, two groups of gear pairs are separated into first group of sub-gear pump and second group of sub-gear pump, described sub-gear pump is comprised of two groups of oval gear engagements, the driving gear mutual dislocation of the driving gear of first group of sub-gear pump and second group of sub-gear pump is installed.
Further, in order to reduce to greatest extent the pulsation of discharge capacity, easy for installation, the driving gear mutual dislocation of the driving gear of described first group of sub-gear pump and second group of sub-gear pump 90 degree are installed, and by the corresponding angle that mutually staggers of the key mapping on wheel hub, are realized mutual dislocation and are installed.
Further, for simplified structure, convenient control, the driving gear of the driving gear of described first group of sub-gear pump and second group of sub-gear pump is fixed on first group of main shaft.
Further, for simplified structure, the driven gear of the driven gear of described first group of sub-gear pump and second group of sub-gear pump floats and is arranged on second group of main shaft.
Further, in order to make to separate panel balance, the oil sucting cavity of described first group of sub-gear pump and second group of sub-gear pump is connected, and the oil-discharging cavity of first group of sub-gear pump and second group of sub-gear pump is connected.
Further, four of described two groups of gear pairs gears oval gear identical with the number of teeth that be that eccentricity is identical, modulus is identical.
Compared with prior art, the beneficial effects of the utility model are:
The utility model adopts four identical oval gears to form two pairs of conjugate gears pairs, every group of gear pair forms one group of independent sub-gear pump, in the continuous rotation process of oval gear pair, gear periphery maximum diameter and path the difference of inswept area, can cause volume-variation, form the space of carrying liquid.The volume-variation amount of its generation mainly depends on the shape of avette pitch curve rather than the size of module, therefore module is only determined by working strength, modulus can reduce as far as possible, thereby reach the object that reduces pocketed oil amount, the velocity ratio of oval gear pair is with change in location, and two groups of sub-gear pump dislocation 90 degree are installed, and its discharge capacity is compensated mutually, reach the pulsation that reduces discharge capacity when increasing total displacement, can meet the performance requirement of many occasions to gear pump.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail, wherein:
Fig. 1 is plan view of the present utility model;
Fig. 2 is principle schematic of the present utility model.
In figure: 1-housing, 2-separates panel, first group of sub-gear pump of 3-, 31-the first driving gear, 32-the first driven gear, second group of sub-gear pump of 4-, 41-the second driving gear, 42-the second driven gear, 5-the first main shaft, 6-the second main shaft, 7-oil sucting cavity, 8-oil-discharging cavity.
Embodiment
As shown in Fig. 1～Fig. 2, the oval gear pump of two-in-parallel structure described in the utility model, comprise drive motor, be arranged on two groups of gear pairs in housing 1, two groups of gear pairs are arranged in parallel, between two groups of gear pairs, be provided with and separate panel 2, two groups of gear pairs are separated into first group of sub-gear pump 3 and second group of sub-gear pump 4.
Described first group of sub-gear pump 3 comprises the first driving gear 31 and the first driven gear 32; Second group of sub-gear pump 4 comprises the second driving gear 41 and the second driven gear 42.Described the first driving gear 31 and the second driving gear 41 are fastened on the first main shaft 5 by key, the first driven gear 32 and the second driven gear 42 float and are arranged on the second main shaft, described the first driving gear 31 and the second driving gear 41 are arranged on the first main shaft 5 by mutual dislocation, the angle that staggers is 0 degree～180 degree, preferred 90 degree, described driving gear is realized arranged in dislocation by the corresponding angle that mutually staggers of the keyway on wheel hub; Described the first main shaft is driven by drive motor.
In described housing 1, be provided with oil sucting cavity 7 and oil-discharging cavity 8, two gear pairs are separated oil sucting cavity 7 and oil-discharging cavity 8, the oil sucting cavity 7 of two sub-gear pumps is connected, and oil-discharging cavity 8 is connected, and on described oil sucting cavity 7, is provided with oil inlet hole, on oil-discharging cavity 8, is provided with oil outlet.
Described the first driving gear 31, the first driven gear 32, the second driving gear 41 and the second driven gear 42 are that eccentricity is identical, modulus the is identical oval gear identical with the number of teeth.
During use, in the connection of rotating process of oval gear pair, the area that gear periphery maximum diameter is inswept with path is different, make volume-variation, form the space of carrying liquid, the volume-variation amount that gear pump produces mainly depends on the shape of avette pitch curve rather than the size of module, therefore module public affairs are determined by strength condition, can reduce as far as possible, thereby reduce pocketed oil amount, the velocity ratio of oval gear pair is with change in location, the corresponding flow oscillation of a pair of gear is larger, the two pairs of gear pairs, 90 degree that mutually stagger are arranged in parallel, the displacement variation of two sub-gear pumps is compensated mutually, when increasing total displacement, reduced the pulsation of discharge capacity.The utility model is simple in structure, easy for installation, can increase as wide as possible as required total displacement, meets requirements of one's work.
Described in the present embodiment, other structure of the oval gear pump of two-in-parallel structure is referring to prior art.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, therefore every, do not depart from technical solutions of the utility model content, any modification, equivalent variations and the modification above embodiment done according to technical spirit of the present utility model, all still belong in the scope of technical solutions of the utility model.
Claims (6)
1. the oval gear pump of a two-in-parallel structure, comprise drive motor, be arranged on the gear pair in housing, in described housing, be provided with oil sucting cavity and oil-discharging cavity, on oil sucting cavity, be provided with and enter hole, on oil-discharging cavity, be provided with oil outlet, it is characterized in that: described gear pair is two groups of gear pairs that are arranged in parallel, in the middle of it, be provided with a separation panel, two groups of gear pairs are separated into first group of sub-gear pump and second group of sub-gear pump, described sub-gear pump is comprised of two groups of oval gear engagements, the driving gear mutual dislocation of the driving gear of first group of sub-gear pump and second group of sub-gear pump is installed.
2. the oval gear pump of two-in-parallel structure according to claim 1, it is characterized in that: the driving gear mutual dislocation of the driving gear of described first group of sub-gear pump and second group of sub-gear pump 90 degree are installed, by the corresponding angle that mutually staggers of the key mapping on wheel hub, realize mutual dislocation and install.
3. the oval gear pump of two-in-parallel structure according to claim 1, is characterized in that: the driving gear of the driving gear of described first group of sub-gear pump and second group of sub-gear pump is fixed on first group of main shaft.
4. the oval gear pump of two-in-parallel structure according to claim 1, is characterized in that: the driven gear of the driven gear of described first group of sub-gear pump and second group of sub-gear pump floats and is arranged on second group of main shaft.
5. the oval gear pump of two-in-parallel structure according to claim 1, is characterized in that: the oil sucting cavity of described first group of sub-gear pump and second group of sub-gear pump is connected, and the oil-discharging cavity of first group of sub-gear pump and second group of sub-gear pump is connected.
6. according to the oval gear pump of two-in-parallel structure described in claim 1 to 6 any one, it is characterized in that: four gears of described two groups of gear pairs are that eccentricity is identical, modulus the is identical oval gear identical with the number of teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320408358.9U CN203441744U (en) | 2013-07-09 | 2013-07-09 | Oval gear pump adopting double parallel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320408358.9U CN203441744U (en) | 2013-07-09 | 2013-07-09 | Oval gear pump adopting double parallel structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203441744U true CN203441744U (en) | 2014-02-19 |
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ID=50092803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320408358.9U Expired - Fee Related CN203441744U (en) | 2013-07-09 | 2013-07-09 | Oval gear pump adopting double parallel structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203441744U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410726A (en) * | 2013-07-09 | 2013-11-27 | 佛山科学技术学院 | Ovoid gear pump with double parallel structure |
-
2013
- 2013-07-09 CN CN201320408358.9U patent/CN203441744U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410726A (en) * | 2013-07-09 | 2013-11-27 | 佛山科学技术学院 | Ovoid gear pump with double parallel structure |
| CN103410726B (en) * | 2013-07-09 | 2016-12-28 | 佛山科学技术学院 | A kind of oval gear pump of two-in-parallel structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20160709 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |