CN1281098A - Plunger pump for low-viscosity fluid - Google Patents
Plunger pump for low-viscosity fluid Download PDFInfo
- Publication number
- CN1281098A CN1281098A CN 00113140 CN00113140A CN1281098A CN 1281098 A CN1281098 A CN 1281098A CN 00113140 CN00113140 CN 00113140 CN 00113140 A CN00113140 A CN 00113140A CN 1281098 A CN1281098 A CN 1281098A
- Authority
- CN
- China
- Prior art keywords
- plunger
- low
- pump
- viscosity fluid
- plunger pump
- 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.)
- Granted
Links
Landscapes
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
A plunger pump for low-viscosity fluid features that the central section of plunger has a hole with a certain diameter to make the plunger at said section exhibit a thin-wall hollow cylinder structure. The pressure generated by plunger compression can deform elactrically the plunger into drum shape to make the external surface of plunger and the internal surface of cylinder body fit tightly, realizing effective sealing, increasing lubrication and reducing wearing off. Its advantages include high efficiency increased to 94%, low noise, and long service life. Its pressure can reach 16 MPa.
Description
The present invention relates to a kind of low viscosity fluid driven pump technology.
The high pressure hydraulic drives that latest developments are got up is the transmission that working medium is realized power with the water after the filtration treatment.Hydraulic driving system has promptly kept the advantage that the hydraulic transmission transferring power is big, efficient is high, component size is little, has overcome the little shortcoming of pneumatic drive power again, and has the positive role of environmental protection.In addition, the transmission of low viscosity medium has also proposed new requirement to the actuation techniques of low-viscosity (mobile) liquid in the special professional domain, drive as food processing, environmental protection equipment driving, water conservancy equipment driving and various special equipment, these equipment have proposed new requirement to the actuation techniques and the product of low viscosity liquid stream.The key of low viscosity fluid actuation techniques development is low viscosity driven pump and motor, and exploitation high pressure liquid stream becomes the guardian technique difficult problem in this field with pump.How the focusing on of its research makes the driven pump with low viscosity fluid can produce the high pressure suitable with oil pressure pump, and keep efficient, low vibration and low noise characteristic, so that the low viscosity fluid drive system can be the same with pressurized oil system, transmit bigger power efficiently, and keep compatibility environment.For low-viscosity (mobile) liquid driving pump, its similar is in oil pressure vane pump and plunger pump, but because its dielectric viscosity is well below hydraulic oil, the efficient that sealing between its relative movement part surface and lubrication problem make driven pump is significantly less than pressurized oil system, lose the noise of generation also far above oil pressure pump by leakage, air pockets, its life-span, this made low viscosity fluid be difficult to enter practicability with pump also well below oil pressure pump.With the swash plate plunger pump is example, for the realization that is difficult to that prevents the relative movement part surface seals and problem easy to wear, usually in outer plunger surface, piston shoes surface and plunger ball die casting certain thickness resin or stupalith are arranged, and form liquid seal and lubricated by the medium that certain pressure is provided to relative motion surface.Wherein, the key factor that is related to low viscosity driven pump efficient is the sealing between outer plunger surface and cylinder body, lubricated and wear problem.Reason owing to the low viscosity medium, cooperating between outer plunger surface and cylinder body realize reliable sealing when being difficult in the different pressures rank simultaneously, improve lubricated and reduce wearing and tearing, make efficient, life-span and the noise control of low viscosity driven pump can not satisfy the practicability requirement.
The objective of the invention is to propose a kind of low viscosity fluid driving plunger pump that is applicable to, make and when the different pressures rank, to realize reliable sealing between outer plunger surface and cylinder body simultaneously, improve lubricated and reduce and wear and tear, make the low viscosity driven pump reach the practicability requirement at efficient, life-span, noise control aspects.
Basic ideas of the present invention are the holes at the central section processing certain diameter of plunger, make plunger become the hollow and thin-walled tube, the fluid of the pressure that forms when utilizing the plunger compression, make the thin-walled section of plunger be the drum type resiliently deformable, force die casting to have the outer plunger surface of resin to form and cooperating that the pressure rank adapts, realize effectively sealing with inboard wall of cylinder block.Plunger pump for low-viscosity fluid is made up of elements such as the pump housing, plunger, cylinder body and rotor shaft, pump housing inner core, piston shoes, swash plate, thrust plate, piston shoes baffle plate, universal cover, central spring, spring stop piece, spring pin, left end cap, right end cap, sliding bearing, drive shaft bearing end cap, reinforced seal, connecting bolts.Plunger cylinder outer surface and the die casting of bulb outer surface have certain thickness PEEK resin material, and (0.5～1.5mm), swash surfaces die casting has the bigger PEEK resin material (1.5～2.0mm) of thickness.For being sealed under the different pressures rank situation between plunger and cylinder body all can be guaranteed, and reduce wearing and tearing as far as possible and improve its life-span, centre portion is processed with the bigger endoporus of diameter in the plunger, makes plunger be the hollow and thin-walled shape.The inboard die casting of pump housing inner core has resin material, with the wearing and tearing that reduce to produce when cylinder body rotates.When the motor drives cylinder body rotated, plunger moving axially in cylinder produced certain hydrodynamic pressure.Along with increasing of pressure, the cydariform distortion takes place in the thin-walled hollow section of plunger in the elastic properties of materials scope, make outer plunger surface be close to cylinder body, form and being slidingly matched that the pressure rank adapts, thereby guarantee between plunger and cylinder body can be under any pressure condition reliable sealing, guarantee effectively lubricating and reduce wearing and tearing, finally improve efficient and the life-span of low viscosity fluid with pump.For the intensity that guarantees that plunger is enough, and make plunger that the resiliently deformable of expection can take place, need control diameter of bore, walled thickness and thin segment length rationally.Through theoretical calculation and test, for the plunger pump for low-viscosity fluid less than 16MPa, plunger hollow hole internal diameter should be smaller or equal to 2/3 plunger outer diameter, and hollow and thin-walled partly length is 3～6 times of walled thickness.In order to reduce the excessive wear of plunger cydariform distortion back outer surface resin, can be at resin surface distortion maximum intermediate portion processing arc or rectangular recess, its depth of groove is 0.05～0.15mm.
Compare with existing low viscosity plunger pump, the plunger pump that the present invention proposes can be under any pressure condition, all can realize reliable sealing and effectively lubricating between plunger and cylinder body, and reduce the wearing and tearing of relative movement part, finally improve efficient and the life-span of low viscosity fluid with pump.Owing to the present invention proposes the key technology that realization effectively seals and reduces to wear and tear, plunger pump for low-viscosity fluid can produce other liquid stream of elevated pressures level under slow-speed of revolution situation, make the low viscosity plunger pump reach unprecedented efficient.Test shows that under the working pressure of 14MPa, the low viscosity plunger pump efficient of using this technology reaches 94%, and greatly reduces the noise of low viscosity plunger pump.
Accompanying drawing is the sectional view of one embodiment of the present of invention-swash plate plunger pump.
Embodiment below in conjunction with accompanying drawing describes feature of the present invention in detail.Plunger pump for low-viscosity fluid is made up of elements such as the pump housing 6, plunger 3, cylinder body and rotor shaft 4, pump housing inner core 5, piston shoes 8, swash plate 9, thrust plate 2, piston shoes baffle plate 7, universal cover 17, central spring 14, spring stop piece 15, spring pin 16, left end cap 1, right end cap 10, sliding bearing 11, drive shaft bearing end cap 18, reinforced seal 12, connecting bolts 13.Plunger 3 cylindrical outer surfaces and the die casting of bulb outer surface have certain thickness PEEK resin material, and (0.5～1.5mm), swash plate 9 surface pressure are cast with the bigger PEEK resin material (1.5～2.0mm) of thickness.For being sealed under the different pressures rank situation of 4 of plunger 3 and cylinder bodies all can be guaranteed, and reduce wearing and tearing as far as possible and improve its life-span, centre portions are processed with the bigger endoporus of diameter in the plunger 3, make plunger 3 be the hollow and thin-walled shape.The 5 inboard die casting of pump housing inner core have resin material, with the wearing and tearing that reduce to produce when cylinder body rotates.When 4 rotations of motor drives cylinder body, plunger 3 moving axially in cylinder produces certain hydrodynamic pressure.Along with increasing of pressure, the cydariform distortion takes place in the thin-walled hollow section of plunger 3 in the elastic properties of materials scope, make plunger 3 outer surfaces be close to cylinder body 4, form and being slidingly matched that the pressure rank adapts, thereby guarantee plunger 3 and 4 energy of cylinder body reliable sealing, effectively lubricating and reduce wearing and tearing under any pressure condition, finally improve the efficient and the life-span of low viscosity fluid usefulness pump.For the intensity that guarantees that plunger is enough, and make plunger that the resiliently deformable of expection can take place, need control diameter of bore, walled thickness and thin segment length rationally.Through theoretical calculation and test, for the plunger pump for low-viscosity fluid less than 16MPa, plunger hollow hole internal diameter should be smaller or equal to 2/3 plunger outer diameter, and hollow and thin-walled partly length is 3～6 times of walled thickness.In order to reduce the excessive wear of plunger cydariform distortion back outer surface resin, can be at resin surface distortion maximum intermediate portion processing arc or rectangular recess, its depth of groove is 0.05～0.15mm.
Owing to adopted unique design, low viscosity plunger pump proposed by the invention can improve driving efficient greatly, can further improve the pressure rank of low viscosity fluid drive system, and the noise of reduction plunger pump or motor, improve its operating life, make low viscosity fluid step a crucial step to the practicability direction with pump/motor.Plunger pump for low-viscosity fluid/motor technologies that the present invention proposes can be applicable to reciprocating plunger pump, swash plate plunger pump/motor, bent axis type axial piston pump/motor etc.
Claims (5)
1. plunger pump for low-viscosity fluid, the plunger and the cylinder body that are cast with resin material by surface pressure are formed, it is characterized in that plunger axis hole centre portion is processed with the bigger endoporus of diameter, the plunger intermediate section is the hollow and thin-walled shape, the hollow section diameter is smaller or equal to 2/3 plunger outer diameter, and its length is 3～6 times of walled thickness.
2. plunger pump for low-viscosity fluid as claimed in claim 1 is characterized in that plunger thin-walled outer surface resin finishing has arc or rectangular recess, and its depth of groove is 0.05～0.15mm.
3. plunger pump for low-viscosity fluid as claimed in claim 1 or 2 is characterized in that its structure can be used for reciprocating plunger pump.
4. plunger pump for low-viscosity fluid as claimed in claim 1 or 2 is characterized in that its structure also can be used for swash plate plunger pump/motor.
5. plunger pump for low-viscosity fluid as claimed in claim 1 or 2 is characterized in that its structure also can be used for bent axis type axial piston pump/motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00113140 CN1220827C (en) | 2000-08-31 | 2000-08-31 | Plunger pump for low-viscosity fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00113140 CN1220827C (en) | 2000-08-31 | 2000-08-31 | Plunger pump for low-viscosity fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1281098A true CN1281098A (en) | 2001-01-24 |
| CN1220827C CN1220827C (en) | 2005-09-28 |
Family
ID=4582955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00113140 Expired - Fee Related CN1220827C (en) | 2000-08-31 | 2000-08-31 | Plunger pump for low-viscosity fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1220827C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528656A (en) * | 2011-10-31 | 2012-07-04 | 中船重工中南装备有限责任公司 | Hydraulic mandrel for grinding end surfaces of slender pipe fittings |
| CN116085250A (en) * | 2023-01-10 | 2023-05-09 | 山东大学 | Integrated flow distribution type low-leakage plunger pair device |
-
2000
- 2000-08-31 CN CN 00113140 patent/CN1220827C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528656A (en) * | 2011-10-31 | 2012-07-04 | 中船重工中南装备有限责任公司 | Hydraulic mandrel for grinding end surfaces of slender pipe fittings |
| CN116085250A (en) * | 2023-01-10 | 2023-05-09 | 山东大学 | Integrated flow distribution type low-leakage plunger pair device |
| CN116085250B (en) * | 2023-01-10 | 2023-11-24 | 山东大学 | Integrated flow distribution type low-leakage plunger pair device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1220827C (en) | 2005-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0879960A2 (en) | High pressure fuel pump | |
| CN210686885U (en) | Transmission mechanism for converting rotary motion into reciprocating motion | |
| JP2008528868A (en) | Compressor connecting rod bearing | |
| CN109653973B (en) | Water lubrication shaft valve composite flow distribution radial plunger pump | |
| CN1220827C (en) | Plunger pump for low-viscosity fluid | |
| CN215213791U (en) | Axial plunger pump plunger and axial plunger pump | |
| CN110566645A (en) | Transmission mechanism and method for converting rotary motion into reciprocating motion | |
| CN113431771B (en) | Radial plunger pump | |
| CN105134539A (en) | Eccentric rotation power end structure of reciprocation pump | |
| CN108691740A (en) | A kind of balanced radial force two inclined plate plunger hydraulic electric-motor pump | |
| CN100348862C (en) | Double action radial plunger pump | |
| CN211116581U (en) | Compressor for vehicle | |
| CN211598917U (en) | Rotary flow distribution motor | |
| CN114135518A (en) | Centrifugal fresh water pump | |
| CN208734500U (en) | A kind of balanced radial force two inclined plate plunger hydraulic electric-motor pump | |
| CN100362268C (en) | Back pressure type high pressure shaft seal | |
| CN104500363A (en) | Plunger pump with lubricating system | |
| KR100598766B1 (en) | Hydraulic piston pump and motor | |
| KR200373965Y1 (en) | Hydraulic piston pump and motor | |
| WO2023115330A1 (en) | Water-lubricated high-pressure pump using rolling support | |
| WO2023115328A1 (en) | High-pressure water pump based on water or aqueous solution lubrication | |
| CN221003090U (en) | Connecting rod cross head assembly and plunger pump | |
| US2689531A (en) | Hydraulic machine | |
| FI62712C (en) | KUGGHJULSPUMP OCH / ELLER -MOTOR | |
| CN219101517U (en) | Plunger assembly and plunger pump with same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20050928 Termination date: 20090930 |