CN108953136A - For reducing the axial plunger pump with oleophobic coating of churn loss - Google Patents
For reducing the axial plunger pump with oleophobic coating of churn loss Download PDFInfo
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- CN108953136A CN108953136A CN201810752001.XA CN201810752001A CN108953136A CN 108953136 A CN108953136 A CN 108953136A CN 201810752001 A CN201810752001 A CN 201810752001A CN 108953136 A CN108953136 A CN 108953136A
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- Prior art keywords
- oleophobic coating
- plunger pump
- axial plunger
- coating
- oleophobic
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention discloses a kind of axial plunger pumps with oleophobic coating for reducing churn loss, the axial plunger pump is attached with oleophobic coating in outer wall of cylinder block face, wherein oleophobic coating is by nano silicone base oxide solution, three kinds of groups of ethanol solution and deionized water solution are grouped as, nano silicone base oxide solution is distributed to the colloidal sol in ethanol solution and deionized water solution and forming low viscosity, it stands to form the outer wall of cylinder block face that gel even application is 50-100rpm to revolving speed again, 25 DEG C of room temperature, natural air drying after 24 hours, gel passes through drying, solidify the oleophobic coating for preparing nanostructure.The coating of the configuration of the present invention is simple, spraying has the performances such as anticorrosive, scratch resistance, oleophobic, can effectively reduce the churn loss generated in the axial plunger pump course of work.
Description
Technical field
The present invention relates to a kind of axial plunger pumps of coating, are particularly suitable for axial plunger pump in the case where running at high speed
Working environment.
Background technique
Axial plunger pump is one of core element of Hydraulic Power Transmission System, and service efficiency is most important.Axial plunger pump
Service efficiency mainly have its loss determine, lose it is smaller, service efficiency is higher.The loss of axial plunger pump is broadly divided into two classes
Volumetric loss and mechanical loss, volumetric loss is the loss as caused by the leakage between friction core pair, and mechanical loss one
It is partly due to that the friction loss between friction pair causes, another part is then since the core part of axial plunger pump is being full of
Compound motion in the shell of oil liquid and generate due to the viscous friction of fluid, turbulent skn friction and stream resistance and the fluid that is formed
Friction loss, referred to as churn loss.Direction with hydraulic pump towards high speed is developed, in aerospace hydraulic system
Axial plunger pump revolving speed reaches up to ten thousand turns per minute, core part compound motion and stirring for generating in the shell full of oil liquid
Loss accounting dramatically increases, and will directly affect the mechanical loss of axial plunger pump, and then influence the service efficiency of axial plunger pump.
Consider that the design of churn loss is less in existing axial plunger pump design at present, is broadly divided into two kinds, one is
Enclosure interior oil liquid is evacuated, keeps being constantly in no oil state formation " dry type shell " in shell, eliminates and stir from source
Mix loss.But dry type shell is unable to satisfy the lubrication and heat dissipation of axial plunger pump internal bearings and friction pair, part dry friction
The friction loss and fever of generation will directly reduce the mechanical efficiency of axial plunger pump.Another kind is optimization structure, reduces flow field
Disorder degree and vortex phenomenon generation area, and then reduce churn loss.Its shortcomings that is unavoidably to will receive material
The limitation of structural strength, components installation form, power to weight ratio reduce and it is at high cost, be unfavorable for standardization be applied to unitized
In axial plunger pump.
The present invention reduces churn loss by a kind of axial plunger pump of coating, while not reducing power to weight ratio
Solve rub secondary heating problem and churn loss.The axial plunger pump has the coating for being applied directly to cylinder surface, benefit
It can be effectively improved the environment of cylinder surface with coating, reduce the coefficient of friction on surface, and then reduce energy dissipation.
Summary of the invention
Present invention aims at for the existing deficiency for reducing churn loss approach, a kind of axis with oleophobic coating is provided
To plunger pump.
The purpose of the present invention is achieved through the following technical solutions: a kind of to have oleophobic for reducing churn loss
The axial plunger pump of coating, which, which has, is applied directly to the oleophobic coating of cylinder surface, the oleophobic coating by
A, tri- kinds of component mixing of B, C, which are coated on the outer wall of cylinder block face of clean surface, forms；The component A is that nano silicone base oxide is molten
Liquid, the B component are ethanol solution, and the component C is deionized water solution；
Oleophobic coating is mainly fluorine resin coating at present, is being total to fluorolefin polymer or fluoroolefins and other monomers
The coating as film forming matter such as polymers is shown in Chinese patent CN103396709A, but this fluorine resin coating is unable to normal temperature cure, needs
240 DEG C or more baking film forming, and film forming thickness is thick, coating hardness is poor, easy to fall off.Axial plunger pump is in the environment for being full of oil liquid
High speed rotary work, the swiftly flowing kinetic energy of oil liquid easily impact the oleophobic coating of cylinder surface, and oleophobic coating difference of hardness is rushed
Oil liquid can seriously be polluted by hitting peeling, generated fretting wear, influenced the normal work of axial plunger pump.And due to film forming in the present invention
Substance is nano-oxide colloidal sol, and nano coating can work under high speed, high pressure, and nano silicon-based living with very strong surface
Property and superpower adsorption capacity, substantially increase the bond strength between film and matrix, can effectively prevent disbonding.
Further, the oleophobic coating preparation the following steps are included:
(1) first clear up substrate surface with the non-woven fabrics that soaks through dehydrated alcohol, guarantee substrate surface it is clean, it is dry, oil-free,
It is rustless；
(2) after mixing evenly by tri- kinds of components difference of A, B, C, 1 is mixed according to the volume ratio 3:1:1 of A, B, component C
Minute, so that A, B, component C are hydrolyzed, condensation chemically reacts, stable vitreosol system is formed in the solution；
(3) 10 minutes are stood, colloidal sol is aged, slowly polymerize between micelle, forms the gel of three-dimensional space network structure, coagulates
It is filled with the solvent to lose flowability between glue network, forms liquid gel；
(4) liquid gel that step (2) are formed is fitted into proportion container, by means of pressure or centrifugal force, passes through spray gun
Liquid gel is dispersed into uniform and fine droplet, muzzle slopes inwardly, the outer wall of cylinder block that spray angle alignment needs to spray
Face guarantees that cylinder body is at the uniform velocity rotated with the revolving speed of 50-100rpm, forms uniform gel film in outer wall of cylinder block face；
(5) 25 DEG C of room temperature, natural air drying after shady place is at least 24 hours dry, gel film pass through drying, are formed by curing
The oleophobic coating of nanostructure.
The preparation method of coating common are plasma etching, laser ablation method, electrochemical process, vapour deposition process at present
Deng.Wherein plasma etching method and laser ablation method are plasma sputtering to be generated using high-energy or using laser to substrate
It performs etching, sees Chinese patent CN107841699A.Such method needs special installation, and cost is very high, is unfavorable for large area and applies
Work, and certain injury can be generated to substrate；Vapour deposition process is currently used primarily in preparation carbon nanotube；Electrochemical process needs pair
Ground is powered, and using the ionization of polymer solution, is deposited on ground and forms nano-micro structure, sees Chinese patent
CN1985027B.Above method is all only applicable to particular surface (electrochemical deposition) or to need special process and equipment to prepare small
Part sample (plasma, laser incising candle).These technologies are mostly also in laboratory stage, generally existing complex forming technology, table
The problems such as face comprehensive performance is poor, to greatly limit oleophobic material in the application of industrial circle.Present invention use will contain highization
Learn active component compound by solution, colloidal sol, gel and solidify, then it is thermally treated made of compound solid method,
I.e. nano silicon-based oxide solution used is dispersed in ethanol solution and deionized water solution first and is formed low viscous
The colloidal sol of degree, accordingly, it is possible in a short period of time obtain molecular level uniformity, when forming gel, reactant it
Between be uniformly mixed to obtain nano composite dope on a molecular scale, while not injuring substrate simple process and performance compared with
It is good, it is used suitable for the part of axial plunger pump.
Further, the oleophobic coating is using Fe as substrate, the Si for being 15-22% comprising mass percent, quality hundred
Divide the O than being 12-23%.
Further, the oleophobic coating with a thickness of 1-3 microns.
Further, the roughness of the oleophobic coating is 0.15 micron.
The invention has the advantages that: the coating particles diameter of the configuration of the present invention is simple, nanometer oleophobic coating is small, tool
There are very strong surface-active and adsorption capacity, and then the bond strength of coating and cylinder body is high, there is powerful chemical resistance, resist
The performance of strong acid, alkali, salt；By the oleophobic reduced performance cylinder surface of oleophobic coating and the wellability of oil liquid, reduce cylinder body table
The friction in face and oil liquid reduces the fever of cylinder surface；The microstructure for improving cylinder surface by nanometer oleophobic coating, can be with
The roughness and coefficient of friction of cylinder surface is effectively reduced, reduces the churn loss for the lower axial plunger pump that runs at high speed, increases axis
To the working efficiency of plunger pump.
Detailed description of the invention
Fig. 1 is a kind of axial plunger pump structural schematic diagram with oleophobic coating of the invention；
In figure: 1. oleophobic coatings；2. shell；Variable valve seat on 3.；Variable spool on 4.；Variable ball seat on 5.；Become on 6.
Measure bulb；7. piston shoes；8. swash plate；9. main shaft；10. sealing ring；11. right end bearing；12. backhaul flexural pivot；13. return plate；Under 14.
Variable bulb；15. lower variable ball seat；16. lower variable valve pocket；17. lower variable valve seat；18. lower variable limits spool；19. flow
Disk；20. cylinder body；21. left end bearing；22. circlip；23. mounting screw；24. plunger；25. shell wall side.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawings and detailed description, apparent the present invention can be depicted
Purpose and effect.
As shown in Figure 1 be the axial plunger pump with oleophobic coating 1, including shell 2, include swash plate 8 in shell 2,
Backhaul components, main shaft 9, the bearing assembly being mounted on main shaft 9, sealing ring 10, cylinder body 20, are mounted on cylinder body 20 at variable component
In plunger piston slippery boots assembly, circlip 22；Wherein, the cylinder body 20 is connect with main shaft 9, and the plunger piston slippery boots assembly is placed in cylinder body 20
Inner post consent, so that cylinder body 20 and plunger piston slippery boots assembly are rotated together with main shaft 9.The variable component and swash plate 8 and end cap
25 connections, control 8 swing angle of swash plate.
The backhaul components include the return plate 13 for compressing piston shoes 7 and the backhaul flexural pivot 12 for compressing return plate 13.
The variable component includes upper variable component and lower variable component, wherein upper variable component include upper variable valve seat 3,
Upper variable spool 4, upper variable ball seat 5, upper variable bulb 6 are sequentially connected, and lower variable component includes lower variable bulb 14, lower variable
Ball seat 15, lower variable valve pocket 16, lower variable valve seat 17, lower variable limit spool 18 are sequentially connected.Upper variable valve seat 3 and lower variable
Valve seat 17 is connect with shell 25 respectively, and upper variable bulb 6 is connect with swash plate 8 respectively with lower variable bulb 14.
The bearing assembly includes left end bearing 21 and right end bearing 11.
The plunger piston slippery boots assembly is made of 9 piston shoes 7.
The working principle of the oleophobic coating 1 in axial plunger pump is as described below: axial plunger pump work is being full of oil liquid
Shell 2 in, by shell wall side 25 realization be isolated from the outside；Cylinder body 20 is driven to rotate together with when main shaft 9 is clockwise, return plate
13 are uniformly applied to active force on 9 piston shoes 7 by backhaul flexural pivot 12, are tightly attached to each piston shoes 7 always on swash plate 8 sliding
Dynamic, 9 piston shoes 7 are allowed to move together, at the same 9 plungers 7 by cylinder body 21, swash plate 8 and return plate 13 active force and make past
Multiple movement, then imbibition and hydraulic fluid are completed by the oil-distribution port of valve plate 19, the position of swash plate 8 is then by upper variable spool 4 under
The position of variable limit spool 18 determines to control the volume of imbibition and hydraulic fluid.Oleophobic coating 1 is sprayed on 20 wall surface of cylinder body, this
When oil liquid have significant energy loss difference between the movement on 1 surface of oleophobic coating and the movement of uncoated surface, work as cylinder body
When 20 rotation, oleophobic coating 1 starts to play a role, since oleophobic coating 1 can reduce the combination of cylinder body 20 outside wall surface and oil liquid
Ability and frictional force, can effectively reduce churn loss.
Above-described embodiment is only presently preferred embodiments of the present invention, is not intended to limit the invention, all in spirit of the invention
Within principle, any modification, equivalent replacement, improvement and so on be should be included within protection scope of the present invention.
Claims (5)
1. a kind of axial plunger pump with oleophobic coating for reducing churn loss, which is characterized in that the axial plunger pump
With the oleophobic coating for being applied directly to cylinder surface, the oleophobic coating is coated in clean surface by tri- kinds of component mixing of A, B, C
Outer wall of cylinder block face on formed；The component A is nano silicone base oxide solution, and the B component is ethanol solution, institute
Stating component C is deionized water solution.
2. a kind of axial plunger pump with oleophobic coating for reducing churn loss according to claim 1, special
Sign is, the preparation of the oleophobic coating the following steps are included:
(1) substrate surface first is cleared up with the non-woven fabrics that soaks through dehydrated alcohol, guarantees that substrate surface is clean, dry, oil-free, nothing
Rust；
(2) after mixing evenly by tri- kinds of components difference of A, B, C, it is mixed 1 minute according to the volume ratio 3:1:1 of A, B, component C,
So that A, B, component C are hydrolyzed, condensation chemically reacts, stable vitreosol system is formed in the solution；
(3) 10 minutes are stood, colloidal sol is aged, slowly polymerize between micelle, forms the gel of three-dimensional space network structure, gel net
It is filled with the solvent to lose flowability between network, forms liquid gel；
(4) liquid gel that step (2) are formed is fitted into proportion container, by means of pressure or centrifugal force, by spray gun by liquid
Body gel dispersion slopes inwardly at uniform and fine droplet, muzzle, and the outer wall of cylinder block face that spray angle alignment needs to spray is protected
Card cylinder body is at the uniform velocity rotated with the revolving speed of 50-100rpm, forms uniform gel film in outer wall of cylinder block face；
(5) 25 DEG C of room temperature, natural air drying after shady place is at least 24 hours dry, gel film pass through drying, are formed by curing nanometer
The oleophobic coating of structure.
3. a kind of axial plunger pump with oleophobic coating for reducing churn loss according to claim 1, special
Sign is that the oleophobic coating is using Fe as substrate, the Si, mass percent 12- that are 15-22% comprising mass percent
23% O.
4. a kind of axial plunger pump with oleophobic coating for reducing churn loss according to claim 1, special
Sign is, the oleophobic coating with a thickness of 1-3 microns.
5. a kind of axial plunger pump with oleophobic coating for reducing churn loss according to claim 1, special
Sign is that the roughness of the oleophobic coating is 0.15 micron.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810752001.XA CN108953136B (en) | 2018-07-10 | 2018-07-10 | For reducing the axial plunger pump with oleophobic coating of churn loss |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810752001.XA CN108953136B (en) | 2018-07-10 | 2018-07-10 | For reducing the axial plunger pump with oleophobic coating of churn loss |
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| CN108953136A true CN108953136A (en) | 2018-12-07 |
| CN108953136B CN108953136B (en) | 2019-09-10 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752160A (en) * | 2018-12-19 | 2019-05-14 | 上海航天控制技术研究所 | Jet for space micro experimental rig resets rope and limits free destination apparatus |
| CN110038776A (en) * | 2019-05-30 | 2019-07-23 | 武汉理工大学 | Immersion oil surface modified passenger car main reducing gear and its surface modifying treatment |
| CN110145588A (en) * | 2019-05-30 | 2019-08-20 | 武汉理工大学 | A kind of textured roller gear in side surface and preparation method thereof |
| CN114576537A (en) * | 2022-01-17 | 2022-06-03 | 北方工业大学 | Capillary tube with excellent lubricating oil droplet desorption performance and processing technology thereof |
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| CN106939881A (en) * | 2017-04-01 | 2017-07-11 | 浙江大学 | Reduce the fairing of axial plunger pump churn loss |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752160A (en) * | 2018-12-19 | 2019-05-14 | 上海航天控制技术研究所 | Jet for space micro experimental rig resets rope and limits free destination apparatus |
| CN110038776A (en) * | 2019-05-30 | 2019-07-23 | 武汉理工大学 | Immersion oil surface modified passenger car main reducing gear and its surface modifying treatment |
| CN110145588A (en) * | 2019-05-30 | 2019-08-20 | 武汉理工大学 | A kind of textured roller gear in side surface and preparation method thereof |
| CN110145588B (en) * | 2019-05-30 | 2022-07-08 | 武汉理工大学 | Cylindrical gear with textured side surface and preparation method thereof |
| CN114576537A (en) * | 2022-01-17 | 2022-06-03 | 北方工业大学 | Capillary tube with excellent lubricating oil droplet desorption performance and processing technology thereof |
| CN114576537B (en) * | 2022-01-17 | 2023-06-16 | 北方工业大学 | Capillary tube with excellent desorption performance of lubricating oil liquid drops and processing technology thereof |
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| CN108953136B (en) | 2019-09-10 |
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