CN102865223B - Double-stage inner gearing rolling sleeve pump - Google Patents
Double-stage inner gearing rolling sleeve pump Download PDFInfo
- Publication number
- CN102865223B CN102865223B CN201210349935.1A CN201210349935A CN102865223B CN 102865223 B CN102865223 B CN 102865223B CN 201210349935 A CN201210349935 A CN 201210349935A CN 102865223 B CN102865223 B CN 102865223B
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- China
- Prior art keywords
- gear
- pump
- gearwheel
- middle gear
- roll sleeve
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Abstract
The invention relates to a double-stage inner gearing rolling sleeve pump which comprises a pump frame fixedly connected with a pump rear cover and is characterized in that: a big gear, a middle gear and a small gear are arranged in the pump frame, wherein the middle gear is provided with a gear plate; a plurality of rolling sleeves are hinged with the gear plate through fixedly connected pin shafts; the rolling sleeves of the middle gear are respectively geared with tooth surfaces of the big gear and the small gear; the big gear is arranged on a cam shaft of a pump rear cover; the gear plate of the middle gear is fixedly connected with a motor shaft; an external end of the gear plate of the middle gear is arranged in the pump frame in a mechanical sealing form; the small gear is hinged with a small gear pin shaft fixed with the pump rear cover; or a separating block for separating liquid absorbing cavity from a liquid exhausting cavity is arranged on the pump rear cover; and an inner tooth surface of the big gear and the rolling sleeves of the middle gear are respectively in moving sealing fit with the separating block. The double-stage inner gearing rolling sleeve pump has the advantages of small volume, light weight, high revolution number, high flow, low noise, simple structure, excellent generality, easiness in manufacturing, low cost, and the like.
Description
Technical field
The present invention relates to pump field, is a kind of twin-stage internal messing roll sleeve pump.
Background technique
Chinese invention patent ZL201120012325.3, disclosing the present inventor's application has " a kind of crescent gear pump ", and the advantage of this pump to realize high revolution, large discharge, but it is more complicated still to there is structure, manufacturability is poor, and manufacture cost is higher, and particularly noise exceeds standard.
Summary of the invention
Problem to be solved by this invention is, carries out improvement and bring new ideas to prior art, provides that volume is little, lightweight, revolution is high, flow is large, and noise is low, structure is simple, versatility good, easy manufacture, twin-stage internal messing roll sleeve pump that cost is low.
Solving one of technological scheme that its technical problem adopts is, a kind of twin-stage internal messing roll sleeve pump, it comprises pump bracket and pump postoperculum is connected, it is characterized in that: in pump bracket, gearwheel is set, middle gear and small gear, described middle gear has gear disk, hinge by being connected on gear disk has several roll sleeves, the roll sleeve of middle gear respectively with gearwheel, the flank engagement of small gear, described gearwheel is placed on the camshaft of pump postoperculum, gear disk and the motor shaft of described middle gear are connected, the gear disk outer end of middle gear is placed in pump bracket by mechanical seal, described small gear is hinged on the small gear bearing pin fixing with pump postoperculum.The gear ratio of described gearwheel, middle gear and small gear is: 10: 9: 8, or 9: 8: 7, or 8: 7: 6, or 7: 6: 5, or 6: 5: 4, or 5: 4: 3, the number of teeth difference of gearwheel and middle gear is 1, and middle gear and small gear number of teeth difference are 1.Described roll sleeve is the roll sleeve that enhancing PTFE is made.
Solve the technological scheme that its technical problem adopts two are, a kind of twin-stage internal messing roll sleeve pump, it comprises pump bracket and pump postoperculum is connected, it is characterized in that: in pump bracket, gearwheel is set, middle gear and small gear, described middle gear has gear disk, hinge by being connected on gear disk has several roll sleeves, the roll sleeve of middle gear respectively with gearwheel, the flank engagement of small gear, the outer end of described gearwheel is placed in pump bracket by mechanical seal, gearwheel and motor shaft are connected, the gear disk of described middle gear is placed on the camshaft of pump postoperculum, described small gear is hinged on the small gear bearing pin fixing with pump postoperculum, pump postoperculum arranges the spacer block separating imbibition and exhaust chamber, described gearwheel inner toothed surface, the roll sleeve of middle gear coordinates with spacer block motion seal respectively.The gear ratio of described gearwheel, middle gear and small gear is: 11: 9: 8, or 10: 8: 7, or 9: 7: 6, or 8: 6: 5, or 7: 5: 4, or 6: 4: 3, the number of teeth difference of gearwheel and middle gear is 2, and middle gear and small gear number of teeth difference are 1.Described roll sleeve is the roll sleeve that enhancing PTFE is made.
Twin-stage internal messing roll sleeve pump of the present invention, owing to adopting, gearwheel, middle gear and small gear are set in pump bracket, the structure that the roll sleeve of middle gear is meshed with the flank of tooth of gearwheel, small gear respectively, especially roll sleeve adopts enhancing PTFE to make, strengthen PTFE and have good wear resistance, its anti-pressure ability is 140-180MPa, and bending resistance is 40-60MPa, low noise transmission can be realized, meet environmental requirement; Diameter due to roll sleeve is exactly the tooth depth of middle gear, and the flow of pump is determined by revolution, tooth depth, the facewidth, and has nothing to do with the gear number of teeth, and therefore, roll sleeve pump occupies unique flow advantage; Have that volume is little, lightweight, revolution is high, flow is large, noise is low, structure is simple, versatility good, easy manufacture, low cost and other advantages.
Accompanying drawing explanation
Fig. 1 is that the twin-stage internal messing of embodiment 1 rolls pump cross-sectional schematic;
Fig. 2 is A-A generalized section in Fig. 1;
Fig. 3 is the twin-stage internal messing roll sleeve pump cross-sectional schematic of embodiment 2;
Fig. 4 is B-B generalized section in Fig. 3;
Fig. 5 is middle gear 4 cross-sectional schematic in Fig. 1;
Fig. 6 is that schematic diagram is looked on Fig. 5 right side;
Fig. 7 is gearwheel 9 structural representation in Fig. 1;
Fig. 8 is D-D cross-sectional schematic in Fig. 7;
Fig. 9 is small gear 7 structural representation in Fig. 1;
Figure 10 is E-E cross-sectional schematic in Fig. 9;
Figure 11 is gearwheel 9 structural representation in Fig. 3;
Figure 12 is F-F generalized section in Figure 11;
Figure 13 is middle gear 4 cross-sectional schematic in Fig. 3;
Figure 14 is G-G cross-sectional schematic in Figure 13;
Figure 15 is small gear 7 structural representation in Fig. 3;
Figure 16 is H-H cross-sectional schematic in Figure 15.
In figure: 1 motor shaft; 2 mechanical seals; 3 pump brackets, 4 middle gears, 5 roll sleeves, 6 bearing pins, 7, small gear, 8 small gear bearing pins, 9 gearwheels, 10 axle sleeves, 11 setting sleeves, 12 pump postoperculums, 13 pump housings, 14 gear disks, 15 frame linkings, 17 spacer blocks.
Embodiment
The invention will be further described to utilize drawings and Examples below.
Embodiment 1: with reference to Fig. 1, Fig. 2, Fig. 5-Figure 10, the twin-stage internal messing roll sleeve pump of embodiment 1, comprise pump bracket 3 to be connected with pump postoperculum 12, gearwheel 9 is set in pump bracket 3, middle gear 4 and small gear 7, described middle gear 4 has gear disk 14, bearing pin 6 by being connected on gear disk 14 is hinged with several roll sleeves 5, the roll sleeve 5 of middle gear 4 respectively with gearwheel 9, the flank engagement of small gear 7, the roll sleeve 5 of middle gear 4 seals transmission with the flank of tooth of gearwheel 9 and the flank of tooth of the little gear teeth 7, roll sleeve 5 exterior arc surface of middle gear 4 has two straight lines and gearwheel 9 face all the time, contact with small gear 7 cylindrical Topland and form imbibition and exhaust chamber simultaneously, described gearwheel 9 is placed on the camshaft of pump postoperculum 12, gear disk 14 and the motor shaft 1 of described middle gear 4 are connected, middle gear 4 is as driving gear, gear disk 14 outer end of middle gear 4 is placed in pump bracket 3 by mechanical seal 2, described small gear 7 is hinged on the bearing pin 8 fixing with pump postoperculum 12, pump postoperculum 12 is provided with hi-Fix cover 11, between the camshaft of pump postoperculum 12 and gearwheel 9 endoporus, wear-resistant sleeve 10 is housed.The gear ratio of described gearwheel 9, middle gear 4 and small gear 7 is: 10: 9: 8, or 9: 8: 7, or 8: 7: 6, or 7: 6: 5, or 6: 5: 4, or 5: 4: 3, gearwheel 9 is 1 with the number of teeth difference of middle gear 4, and middle gear 4 and small gear 7 number of teeth difference are 1.Described roll sleeve 5 is strengthen tetrafluoro to add the roll sleeve that graphite material makes.
Embodiment 2: with reference to Fig. 3, Fig. 4, Figure 11-Figure 16, the twin-stage internal messing roll sleeve pump of embodiment 2 and the twin-stage internal messing roll sleeve pump main distinguishing feature of embodiment 1 are, pump postoperculum 12 arranges the spacer block 17 separating imbibition and exhaust chamber, and gearwheel 9 is as driving gear, pump bracket 3 adopts split production, be connected by screw by frame linking 15 and the pump housing 13, its concrete structure comprises pump bracket 3 and is connected with pump postoperculum 12, gearwheel 9 is set in pump bracket 3, middle gear 4 and small gear 7, described middle gear 4 has gear disk 14, bearing pin 6 by being connected on gear disk 14 is hinged with several roll sleeves 5, the roll sleeve 5 of middle gear 4 respectively with gearwheel 9, the flank engagement of small gear 7, the outer end of described gearwheel 9 is placed in pump bracket 3 by mechanical seal 2, gearwheel 9 and motor shaft 1 are connected, gearwheel 9 is as driving gear, the gear disk 14 of described middle gear 4 is placed on the camshaft of pump postoperculum 12, described small gear 7 is hinged on the bearing pin 8 fixing with pump postoperculum 12, pump postoperculum 12 arranges the spacer block 17 separating imbibition and exhaust chamber, described gearwheel 9 inner toothed surface, the roll sleeve 5 of middle gear 4 coordinates with spacer block 17 motion seal respectively.The gear ratio of described gearwheel 9, middle gear 4 and small gear 7 is: 11: 9: 8, or 10: 8: 7, or 9: 7: 6, or 8: 6: 5, or 7: 5: 4, or 6: 4: 3, gearwheel 9 is 2 with the number of teeth difference of middle gear 4, and middle gear 4 and small gear 7 number of teeth difference are 1.Described roll sleeve 5 is strengthen tetrafluoro to add the roll sleeve that graphite material makes.
Roll sleeve 5 is the optimal pumps reducing operational noise, and adopt polytetrafluoroethylene to add graphite and a small amount of copper powder, being called enhancing tetrafluoro, is commercially available material.Strengthen tetrafluoro and can reduce expansion coefficient, its intensity is higher than pure PTFE, pump is in high-pressure work, roll sleeve 5 is hinged on the steel bearing pin 6 that middle gear dish 14 is connected, freely can rotate around bearing pin 6, roll sleeve 5 is provided with lubrication aperture and roll sleeve 5 internal diameter is provided with multiple straight line lubrication and cold dynamic sulculus, most advantageously not by resistance to bending when roll sleeve 5 works in pump, only by compressive resistance, bending resistance is born by bearing pin 6, strengthen tetrafluoro resistance to compression 140-180MPa, bending resistance 40-60MPa, the resistance to flexure strengthening the strength ratio small gear 7 of tetrafluoro roll sleeve 5 improves 3 times.Strengthening PTFE is the preferred materials reducing noise at present.The twin-stage internal messing roll sleeve pump of embodiment 2, roll sleeve 5 seals with small gear 7 Topland and spacer block 17 inner circle, gearwheel 9 inner circle tooth flank and the sealing of spacer block 17 cylindrical form imbibition and exhaust chamber, its feature: roll sleeve 5 and the Topland of small gear 7 and the noiseless point of tooth flank of the large gear teeth 9, the twin-stage internal messing roll sleeve pump theoretical delivery large 8.3% without spacer block 17 of flow-rate ratio same specification embodiment 1.Above-mentioned two kinds of twin-stage internal messing roll sleeve pump pinion 7 minimum number of teeth >=3.
The model machine of two kinds of twin-stage internal messing roll sleeve pumps of the present invention, all through the trial run of 10 months, respond well, achieve the object of the invention and reach described effect.
This embodiment is only limited embodiment, but and non exhaustive, to those skilled in the art, any without copying and changing done by creative work, all belong to the scope of the claims in the present invention protection.
Claims (2)
1. a twin-stage internal messing roll sleeve pump, it comprises pump bracket and pump postoperculum, described pump bracket and described pump postoperculum are connected, it is characterized in that: in pump bracket, gearwheel is set, middle gear and small gear, described middle gear has gear disk, hinge by being connected on gear disk has several roll sleeves, the roll sleeve of middle gear respectively with gearwheel, the flank engagement of small gear, described gearwheel is placed on the camshaft of pump postoperculum, gear disk and the motor shaft of described middle gear are connected, the gear disk outer end of middle gear is placed in pump bracket by mechanical seal, described small gear is hinged on the small gear bearing pin fixing with pump postoperculum, described gearwheel, the gear ratio of middle gear and small gear is: 10: 9: 8, or 9: 8: 7, or 8: 7: 6, or 7: 6: 5, or 6: 5: 4, or 5: 4: 3, the number of teeth difference of gearwheel and middle gear is 1, middle gear and small gear number of teeth difference are 1, described roll sleeve is the roll sleeve that enhancing PTFE is made.
2. a twin-stage internal messing roll sleeve pump, it comprises pump bracket and pump postoperculum, described pump bracket and described pump postoperculum are connected, it is characterized in that: in pump bracket, gearwheel is set, middle gear and small gear, described middle gear has gear disk, hinge by being connected on gear disk has several roll sleeves, the roll sleeve of middle gear respectively with gearwheel, the flank engagement of small gear, the outer end of described gearwheel is placed in pump bracket by mechanical seal, gearwheel and motor shaft are connected, the gear disk of described middle gear is placed on the camshaft of pump postoperculum, described small gear is hinged on the small gear bearing pin fixing with pump postoperculum, pump postoperculum arranges the spacer block separating imbibition and exhaust chamber, described gearwheel inner toothed surface, the roll sleeve of middle gear coordinates with spacer block motion seal respectively, described gearwheel, the gear ratio of middle gear and small gear is: 11: 9: 8, or 10: 8: 7, or 9: 7: 6, or 8: 6: 5, or 7: 5: 4, or 6: 4: 3, the number of teeth difference of gearwheel and middle gear is 2, middle gear and small gear number of teeth difference are 1, described roll sleeve is the roll sleeve that enhancing PTFE is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210349935.1A CN102865223B (en) | 2012-09-14 | 2012-09-14 | Double-stage inner gearing rolling sleeve pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210349935.1A CN102865223B (en) | 2012-09-14 | 2012-09-14 | Double-stage inner gearing rolling sleeve pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102865223A CN102865223A (en) | 2013-01-09 |
| CN102865223B true CN102865223B (en) | 2014-12-31 |
Family
ID=47444292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210349935.1A Expired - Fee Related CN102865223B (en) | 2012-09-14 | 2012-09-14 | Double-stage inner gearing rolling sleeve pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102865223B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU939825A1 (en) * | 1980-05-30 | 1982-06-30 | Брянский технологический институт | Planetary cycloidal hydraulic machine |
| CN2076186U (en) * | 1988-09-09 | 1991-05-01 | 陕西省前进机械厂 | Cycloidal pin-wheel speed reducer |
| CN101120172A (en) * | 2005-02-16 | 2008-02-06 | 麦格纳动力系有限公司 | Crescent gear pump with novel rotor set |
| CN101158349A (en) * | 2007-10-31 | 2008-04-09 | 宁波华液电液控制工程股份有限公司 | Gear ring pump |
| CN100520067C (en) * | 2007-11-13 | 2009-07-29 | 上海师范大学 | Rotor pump with double pendulum lines |
| CN201521441U (en) * | 2009-11-01 | 2010-07-07 | 安徽理工大学 | Inner curve planetary gear pump |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4076603B2 (en) * | 1997-06-25 | 2008-04-16 | 株式会社タカコ | Planetary cam type fluid pressure device |
| US7670122B2 (en) * | 2006-08-15 | 2010-03-02 | Arvinmeritor Technology, Llc | Gerotor pump |
-
2012
- 2012-09-14 CN CN201210349935.1A patent/CN102865223B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU939825A1 (en) * | 1980-05-30 | 1982-06-30 | Брянский технологический институт | Planetary cycloidal hydraulic machine |
| CN2076186U (en) * | 1988-09-09 | 1991-05-01 | 陕西省前进机械厂 | Cycloidal pin-wheel speed reducer |
| CN101120172A (en) * | 2005-02-16 | 2008-02-06 | 麦格纳动力系有限公司 | Crescent gear pump with novel rotor set |
| CN101158349A (en) * | 2007-10-31 | 2008-04-09 | 宁波华液电液控制工程股份有限公司 | Gear ring pump |
| CN100520067C (en) * | 2007-11-13 | 2009-07-29 | 上海师范大学 | Rotor pump with double pendulum lines |
| CN201521441U (en) * | 2009-11-01 | 2010-07-07 | 安徽理工大学 | Inner curve planetary gear pump |
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| Publication number | Publication date |
|---|---|
| CN102865223A (en) | 2013-01-09 |
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Granted publication date: 20141231 Termination date: 20150914 |
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| EXPY | Termination of patent right or utility model |