CN105626513A - Novel gear pump with non-full-tooth gears - Google Patents
Novel gear pump with non-full-tooth gears Download PDFInfo
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- CN105626513A CN105626513A CN201410698761.9A CN201410698761A CN105626513A CN 105626513 A CN105626513 A CN 105626513A CN 201410698761 A CN201410698761 A CN 201410698761A CN 105626513 A CN105626513 A CN 105626513A
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- driven pulley
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Abstract
The invention relates to a novel gear pump with non-full-tooth gears. The three non-full-tooth gears, namely, the main gear, the driven gear I and the driven gear II are mounted in a pump body. Four teeth are mounted on the outer edge of the main gear, and two tooth grooves are formed in the outer edge of each driven gear. In the rotating process, two teeth of the main gear are engaged with one gear groove of the driven gear I and one tooth groove of the driven gear II. The novel gear pump has the beneficial effects that the engagement frequency is low, the process is short, and the volume of an oil suction and drainage cavity is large; the pump can directly rotate reversely to be used, self-priming performance is good, and the compression ratio is large; a gear tooth and tooth groove manner can be changed; a bearing of the main gear can be protected; the diameter of a main gear disc is reduced, the tooth height of the main gear disc is correspondingly increased, the diameter of the driven gears is correspondingly changed, and it is guaranteed that after two gears are sealed in a contact manner, the suction amount can be increased, and the novel gear pump can be used as a low-pressure high-flow pump; and the diameter of the main gear disc is increased, the tooth height is correspondingly reduced, the diameter of the driven gears is correspondingly changed, and it is guaranteed that after two gears are sealed in the contact manner, the novel gear pump can be used as a high-pressure low-flow pump.
Description
Technical field
The present invention relates to technical field of hydraulic mechanical equipment, particularly relate to the new-type gear pump of a kind of non-full-depth tooth gear.
Background technology
At term, gear pump is also positive displacement devices, and namely as the piston in a cylinder barrel, when a tooth enters the fluid space of another tooth, liquid is just mechanically squeezed and ejects. Because liquid is incompressible, so liquid and tooth cannot occupy the same space in the same time, so, liquid is just excluded; Due to the continuous engagement of tooth, this phenomenon is just occurring continuously, thus also just provides a continuous eliminating amount, pump every revolution at delivery side of pump, and the amount of discharge is the same, and along with the rotation incessantly driving axle, fluid also just discharged incessantly by pump.
The most basic form of gear pump is exactly that two equivalently-sized gears engage each other rotation in a close-fitting housing, the similar figure of eight in inside of this housing, and two gears are contained in the inside, and the external diameter of gear and both sides and housing closely cooperate; Liquid enters in the middle of two gears at suction inlet, and is full of this space, along with the rotation of tooth is along housing motion, finally discharges at Pai Kouchu. Meanwhile, the swept volume that gear pump is dependent on being formed between pumping cylinder and meshing gear changes and moves carries liquid or so as to the drum pump of supercharging. Being formed two by two gears, the pump housing and front and rear covers and close space, when pinion rotation, the spatial volume of the side that is out of gear is big from little change, forms vacuum, draws liquid into, and the spatial volume of gear engagement side is from diminishing greatly, and is clamp-oned in pipeline by liquid.
As from the foregoing, existing gear pump constantly engaged by gear oil suction, oil extraction process and hydraulic pressure is provided, this case it is important to note that, the teeth groove cavity of full-depth tooth gear is little and causes that suction and discharge pressure are little, full-depth tooth gear is constantly in engagement and produces pulsation, high-speed gear rotates and produces centrifugal force and affect teeth groove oil suction and pressurized effect, and particularly when elevated pressures, the radial force that gear is subject to is relatively big and is greatly shortened the gear-bearing life-span; Meanwhile, although existing plunger displacement pump performance is better than gear pump, but structure is complicated, wear-out part is many, cost is high.
Therefore, for the above, it is necessary to prior art is effectively innovated.
Summary of the invention
For disadvantages described above, the present invention provides that a kind of meshing frequency is low, process is short, suction oil pocket volume is big, use of can directly reversing, the non-full-depth tooth gear that good from absorption, compression ratio is big new-type gear pump, to solve many deficiencies of prior art.
For achieving the above object, the present invention is by the following technical solutions:
The new-type gear pump of a kind of non-full-depth tooth gear, including the main wheel in the pump housing and inner chamber thereof, driven pulley I, driven pulley II, installs main wheel, driven pulley I and driven pulley II these three at pump body and is non-full-depth tooth gear;
Arranging four teeth respectively tooth I, tooth II, tooth III, tooth IV at main wheel outward flange, meanwhile, the outward flange at each driven pulley offers two teeth groove respectively;
In rotary course, main wheel two teeth therein engage with a teeth groove of a teeth groove of driven pulley I, driven pulley II respectively, thereby through gear aspirate, promote, compression rather than gear frequently engaged suctions, be drained through journey, can forward with rotate backward.
Correspondingly, also include:
Described driven pulley is set to even number, and main wheel outward flange is with even number tooth;
Described driven pulley I or driven pulley II lifting surface area is little and its radial force is little, the main wheel radial forces that compression process produces can be cancelled out each other;
Described main wheel, driven pulley I or driven pulley II can change class 8 word special-shaped wheel into, can change the gear teeth, teeth groove mode, the changeable main wheel number of teeth, driven pulley quantity and teeth groove quantity, and the theory of engagement is identical;
Described main wheel disk diameter diminishes, and its tooth depth strains greatly mutually, driven pulley diameter respective change ensures after two-wheeled contact seal, it is possible to increase the amount of taking out, and uses as low pressure and mass flow pump; Main wheel disk diameter becomes that big tooth depth diminishes accordingly, driven pulley diameter respective change ensures after two-wheeled contact seal, can use as high-pressure low-flow pump;
If using as vacuum pump, air inlet I, air inlet II can be offered respectively in pump housing both sides external, then, respectively end face exhausting mouth I, end face exhausting mouth II are set at the teeth groove end face of driven pulley I, driven pulley II successively, clearance seal is relied on, it is achieved suction, compression, air-out process when main wheel, driven pulley I, driven pulley II high speed rotating.
Having the beneficial effect that of the new-type gear pump of non-full-depth tooth gear of the present invention
(1) meshing frequency is low, process is short, inhale, oil-discharging cavity volume big; Engagement process is only small on hydraulic fluid flow rate impact, thus pulsation is also only small;
(2) this pump can directly reverse use, good from absorption, compression ratio is big;
Main wheel, from wheel can change the special-shaped wheels such as class 8 word into, the gear teeth, teeth groove mode, the changeable main wheel number of teeth, driven pulley quantity and teeth groove quantity can be changed, the theory of engagement is identical;
(4) symmetrical for even number from wheel, offset main wheel radial force, protect main wheel bearing;
(5) main wheel disk diameter diminishes, and its tooth depth strains greatly mutually, driven pulley diameter respective change ensures after two-wheeled contact seal, it is possible to increase the amount of taking out, and can use as low pressure and mass flow pump; Main wheel disk diameter becomes that big tooth depth diminishes accordingly, driven pulley diameter respective change ensures after two-wheeled contact seal, can use as high-pressure low-flow pump;
(6) the pocketed oil problem of engagement process is solved by engagement place drain charge groove, and it is identical with existing gear pump solution that gear face reveals backlash compensation problem;
(7) it addition, adjustable principal and subordinate wheel can use as vacuum pump, compressor with pump housing gap.
Accompanying drawing explanation
Below according to accompanying drawing, the present invention is described in further detail.
Fig. 1 is the structural representation of gear pump described in the embodiment of the present invention;
Fig. 2 is the rotation status schematic diagram of the non-full-depth tooth gear of gear pump described in the embodiment of the present invention;
Fig. 3 is the engagement schematic diagram of the non-full-depth tooth gear of gear pump described in the embodiment of the present invention;
Fig. 4 be the embodiment of the present invention as vacuum pump application time beginning exhaust condition schematic diagram;
Fig. 5 be the embodiment of the present invention as vacuum pump application time exc. view.
In figure:
1, main wheel; 2, driven pulley I; 3, driven pulley II; 4, tooth I; 5, tooth II; 6, tooth III; 7, tooth IV; 8, air inlet I; 11, air inlet II; 12, the pump housing; 13, end face exhausting mouth I; 14, end face exhausting mouth II.
Detailed description of the invention
Embodiment 1
As Figure 1-3, the new-type gear pump of the non-full-depth tooth gear described in the embodiment of the present invention, including the main wheel 1 in the pump housing 12 and inner chamber thereof, driven pulley I 2, driven pulley II 3, it is non-full-depth tooth gear in the internally installed main wheel of the pump housing 12 1, driven pulley I 2 and driven pulley II 3 these three, driven pulley therein may be configured as even number, this driven pulley I 2, driven pulley II 3 are respectively arranged at main wheel 1 arranged on left and right sides and contacting with each other with main wheel 1 center for point of symmetry and seal, and are internally formed compression chamber and compression chamber is symmetrical at the pump housing 12, at main wheel 1 outward flange, even number tooth is set, may be configured as four respectively tooth I 4, tooth II 5, tooth III 6, tooth IV 7, simultaneously, outward flange at each driven pulley offers two teeth groove respectively, driven pulley I 2 therein or driven pulley II 3 surface area is little and its radial force also more conventional gear pump is little, main wheel 1 radial forces that compression process produces can be cancelled out each other, thus being greatly prolonged its bearing life, in rotary course, 1 one teeth of main wheel are made to engage with a teeth groove of driven pulley I 2, 1 one teeth of main wheel engage with a teeth groove of driven pulley II 3, as, when tooth II 5 engages with a teeth groove of driven pulley II 3, then tooth IV 7 engages with a teeth groove of driven pulley I 2, when tooth I 4 engages with a teeth groove of driven pulley II 3, then tooth III 6 engages with a teeth groove of driven pulley I 2, aspirate thereby through gear, promote, compression rather than gear have frequently engaged suction, it is drained through journey, can forward and rotating backward, moment of torsion is big, pressure is high, pulse little, good directionality, simple in construction, cost is low, additionally, described main wheel 1 and driven pulley I 2, driven pulley II 3 are by the gear engagement synchronous axial system outside annular seal space, in the pump housing.
Embodiment 2
As illustrated in figures 4-5, when the embodiment of the present invention can be improved as vacuum pump application, it is non-full-depth tooth gear in the internally installed main wheel of the pump housing 12 1, driven pulley I 2 and driven pulley II 3 these three, driven pulley therein may be configured as even number, and this driven pulley I 2, driven pulley II 3 are respectively arranged at main wheel 1 arranged on left and right sides; Outside the pump housing 12, offer air inlet I 8, air inlet II 11 and two air inlets be successively respectively separately positioned on the pump housing 12 both sides, be internally formed compression chamber and compression chamber is symmetrical at the pump housing 12; At main wheel 1 outward flange, even number tooth is set, may be configured as four respectively tooth I 4, tooth II 5, tooth III 6, tooth IV 7, simultaneously, outward flange at each driven pulley offers two teeth groove respectively, driven pulley I 2 therein or driven pulley II 3 surface area is little and its radial force also more conventional gear pump is little, main wheel 1 radial forces that compression process produces can be cancelled out each other, thus being greatly prolonged its bearing life; In rotary course, 1 one teeth of main wheel are made to engage with a teeth groove of driven pulley I 2,1 one teeth of main wheel engage with a teeth groove of driven pulley II 3, as, when tooth II 5 engages with a teeth groove of driven pulley II 3, then tooth IV 7 engages with a teeth groove of driven pulley I 2, when tooth I 4 engages with a teeth groove of driven pulley II 3, then tooth III 6 engages with a teeth groove of driven pulley I 2, has frequently engaged suction thereby through gear suction, promotion, compression rather than gear, has been drained through journey;
Simultaneously, by main wheel 1, driven pulley I 2, driven pulley II 3 and each take turns and be adjusted to appropriate clearance between the pump housing 12, respectively end face exhausting mouth I 13, end face exhausting mouth II 14 are set at the teeth groove end face of driven pulley I 2, driven pulley II 3 successively again, clearance seal is relied on when main wheel 1, driven pulley I 2 driven pulley II 3 high speed rotating, suction, compression, air-out process can be realized, this pump can directly reverse operation, uses as compressor.
The above-mentioned description to embodiment be for the ease of those skilled in the art it will be appreciated that and application this case technology, these examples obviously can be made various amendment by person skilled in the art easily, and General Principle described herein is applied in other embodiments without through performing creative labour. Therefore, this case is not limited to above example, and improvement and the amendment made for this case all should in this case protection domains.
Claims (7)
1. a new-type gear pump for non-full-depth tooth gear, including the main wheel in the pump housing and inner chamber thereof, driven pulley I, driven pulley II, it is characterised in that:
At pump body, main wheel, driven pulley I and driven pulley II these three are installed and are non-full-depth tooth gear; Arranging four teeth respectively tooth I, tooth II, tooth III, tooth IV at main wheel outward flange, meanwhile, the outward flange at each driven pulley offers two teeth groove respectively;
In rotary course, make main wheel two teeth therein engage with a teeth groove of a teeth groove of driven pulley I, driven pulley II respectively, thereby through gear aspirate, promote, compression rather than gear frequently engaged suctions, be drained through journey, can forward with rotate backward.
2. the new-type gear pump of non-full-depth tooth gear according to claim 1, it is characterised in that: described driven pulley is set to even number.
3. the new-type gear pump of non-full-depth tooth gear according to claim 1, it is characterised in that: described main wheel outward flange is with even number tooth.
4. the new-type gear pump of non-full-depth tooth gear according to claim 1, it is characterised in that: described driven pulley I or driven pulley II lifting surface area is little and its radial force is little, the main wheel radial forces that compression process produces can be cancelled out each other.
5. the new-type gear pump of non-full-depth tooth gear according to claim 1, it is characterized in that: described main wheel, driven pulley I or driven pulley II can change class 8 word special-shaped wheel into, can changing the gear teeth, teeth groove mode, the changeable main wheel number of teeth, driven pulley quantity and teeth groove quantity, the theory of engagement is identical.
6. the new-type gear pump of non-full-depth tooth gear according to claim 1, it is characterized in that: described main wheel disk diameter diminishes, and its tooth depth strains greatly mutually, driven pulley diameter respective change ensures after two-wheeled contact seal, the amount of taking out can be increased, use as low pressure and mass flow pump; Disk diameter becomes that big tooth depth diminishes accordingly, driven pulley diameter respective change ensures after two-wheeled contact seal, can use as high-pressure low-flow pump.
7. the new-type gear pump of non-full-depth tooth gear according to claim 1, it is characterized in that: if using as vacuum pump, air inlet I, air inlet II can be offered respectively in pump housing both sides external, then, end face exhausting mouth I, end face exhausting mouth II is set up respectively successively at the teeth groove end face of driven pulley I, driven pulley II, clearance seal is relied on, it is achieved suction, compression, air-out process when main wheel, driven pulley I, driven pulley II high speed rotating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410698761.9A CN105626513A (en) | 2014-11-26 | 2014-11-26 | Novel gear pump with non-full-tooth gears |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410698761.9A CN105626513A (en) | 2014-11-26 | 2014-11-26 | Novel gear pump with non-full-tooth gears |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105626513A true CN105626513A (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410698761.9A Pending CN105626513A (en) | 2014-11-26 | 2014-11-26 | Novel gear pump with non-full-tooth gears |
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| CN (1) | CN105626513A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB974080A (en) * | 1959-12-21 | 1964-11-04 | Reiners Walter | Variable capacity gear pumps or motors |
| DE2321639A1 (en) * | 1973-04-28 | 1974-11-07 | Georg Draeger | GEAR PUMP OR GEAR MOTOR |
| JPS57135288A (en) * | 1981-02-10 | 1982-08-20 | Kawasaki Heavy Ind Ltd | Three-gear type pump |
| CN1045440A (en) * | 1989-03-07 | 1990-09-19 | 刘文化 | Full-engaged fluid machinery |
| CN2132005Y (en) * | 1992-05-09 | 1993-05-05 | 党文蔚 | Rotary positive displacement pump |
| CN201165972Y (en) * | 2008-03-03 | 2008-12-17 | 苏欣 | High performance full balance compound gear pump |
| CN201636004U (en) * | 2010-01-29 | 2010-11-17 | 中国海洋石油总公司 | High temperature hydraulic pump with planetary gear |
| CN102828946A (en) * | 2012-07-27 | 2012-12-19 | 常铁榜 | Gear double-teeth water pump |
| DE102013004528B3 (en) * | 2013-03-18 | 2014-05-08 | Heinz Prümer | Rotary piston pump for supplying water, oils, acids or bases, has rotary piston rotatable in pump chamber and two external rotors, by which inlets and outlets are releasable or blockable depending on momentary positions of external rotors |
-
2014
- 2014-11-26 CN CN201410698761.9A patent/CN105626513A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB974080A (en) * | 1959-12-21 | 1964-11-04 | Reiners Walter | Variable capacity gear pumps or motors |
| DE2321639A1 (en) * | 1973-04-28 | 1974-11-07 | Georg Draeger | GEAR PUMP OR GEAR MOTOR |
| JPS57135288A (en) * | 1981-02-10 | 1982-08-20 | Kawasaki Heavy Ind Ltd | Three-gear type pump |
| CN1045440A (en) * | 1989-03-07 | 1990-09-19 | 刘文化 | Full-engaged fluid machinery |
| CN2132005Y (en) * | 1992-05-09 | 1993-05-05 | 党文蔚 | Rotary positive displacement pump |
| CN201165972Y (en) * | 2008-03-03 | 2008-12-17 | 苏欣 | High performance full balance compound gear pump |
| CN201636004U (en) * | 2010-01-29 | 2010-11-17 | 中国海洋石油总公司 | High temperature hydraulic pump with planetary gear |
| CN102828946A (en) * | 2012-07-27 | 2012-12-19 | 常铁榜 | Gear double-teeth water pump |
| DE102013004528B3 (en) * | 2013-03-18 | 2014-05-08 | Heinz Prümer | Rotary piston pump for supplying water, oils, acids or bases, has rotary piston rotatable in pump chamber and two external rotors, by which inlets and outlets are releasable or blockable depending on momentary positions of external rotors |
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Application publication date: 20160601 |