CN105587705A - Scraping resisting and corrosion resisting pressure stabilizing valve - Google Patents
Scraping resisting and corrosion resisting pressure stabilizing valve Download PDFInfo
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- CN105587705A CN105587705A CN201610064294.3A CN201610064294A CN105587705A CN 105587705 A CN105587705 A CN 105587705A CN 201610064294 A CN201610064294 A CN 201610064294A CN 105587705 A CN105587705 A CN 105587705A
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- valve
- oilhole
- valve body
- spring
- pressure
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- 238000005260 corrosion Methods 0.000 title claims abstract description 21
- 230000007797 corrosion Effects 0.000 title claims abstract description 18
- 230000000087 stabilizing effect Effects 0.000 title abstract description 7
- 238000007790 scraping Methods 0.000 title abstract 3
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 238000013016 damping Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 description 30
- 239000003921 oil Substances 0.000 description 23
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 20
- 239000004810 polytetrafluoroethylene Substances 0.000 description 16
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 16
- 239000012530 fluid Substances 0.000 description 13
- 239000007788 liquid Substances 0.000 description 13
- 238000003756 stirring Methods 0.000 description 11
- 239000004408 titanium dioxide Substances 0.000 description 10
- 239000011812 mixed powder Substances 0.000 description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- 229920000049 Carbon (fiber) Polymers 0.000 description 8
- 239000004734 Polyphenylene sulfide Substances 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 150000001412 amines Chemical class 0.000 description 8
- 239000004917 carbon fiber Substances 0.000 description 8
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 239000004848 polyfunctional curative Substances 0.000 description 8
- 229920000069 polyphenylene sulfide Polymers 0.000 description 8
- -1 polytetrafluoroethylene Polymers 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000002828 fuel tank Substances 0.000 description 6
- 239000003960 organic solvent Substances 0.000 description 6
- 239000008096 xylene Substances 0.000 description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 5
- 238000005457 optimization Methods 0.000 description 5
- 229910052719 titanium Inorganic materials 0.000 description 5
- 239000010936 titanium Substances 0.000 description 5
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 4
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- 239000004359 castor oil Substances 0.000 description 4
- 235000019438 castor oil Nutrition 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 239000012188 paraffin wax Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 241000233855 Orchidaceae Species 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/022—Flow-dividers; Priority valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Safety Valves (AREA)
Abstract
The invention provides a scraping resisting and corrosion resisting pressure stabilizing valve. The scraping resisting and corrosion resisting pressure stabilizing valve is characterized by comprising an adjusting nut, a pressure adjusting spring, a cone valve, a cone valve spring, a valve body, a spring, a valve element and a main valve body; the valve body is arranged above the main valve body; the main valve body is internally provided with the valve element and the spring located above the valve element; the cone valve is arranged in the valve body; the cone valve spring is arranged on the right side of the cone valve; the pressure adjusting spring is arranged on the left side of the cone valve; the outer side of the pressure adjusting spring is sleeved with the adjusting nut, the pressing force of the adjusting spring is controlled through the adjusting nut, and therefore the pressure at the position of an oil inlet of the pressure stabilizing valve is adjusted; the pressure stabilizing valve overcomes the problem that the pressure adjusting error is large, and the work stability of the pressure stabilizing valve is improved; meanwhile, the phenomenon of hole wall corrosion caused by scratches on the hole wall can be effectively avoided, and the phenomenon that when the purity degree of work oil is not high and impurities exist, scratches are likely to occur on the inner valve wall of the valve body is effectively prevented.
Description
Technical field
The present invention relates to a kind of pressure maintaining valve, specifically a kind of anti-scratch corrosion resistant pressure maintaining valve.
Background technology
Any executing agency all requires to produce certain torque, and movement velocity can regulate and can change the direction of motion. Therefore, in hydraulic system, except energy conversion device---hydraulic pump and hydraulic motor and hydraulic motor, also must adopt various dissimilar hydraulic valves, the control and regulation device of composition hydraulic system, is used for controlling and adjusting is transported to flow stream pressure, flow and the direction of in each hydraulic actuating mechanism, going by hydraulic pump.
Pressure-control valve is the principle work that relies on fluid pressure and spring force balance, existing pressure-control valve mostly is the override pressure that carrys out application valve body by the pre compressed magnitude of the spring in application valve body, that is to say, also mean the corresponding spring rate that reduces by the pre compressed magnitude that increases spring, therefore, rigidity for the spring in pressure-control valve body need to have higher precision, to reduce override pressure.
Working media in pressure maintaining valve mostly is working oil, in the time that the situation that the degree of purity of working oil is not high, have impurity occurs, make easily to occur cut on valve inner valve wall, once and on valve body wall, there is cut, on valve body wall, be just easily corroded. And working media may be sneaked into water in the course of the work, sneak into the working media of moisture under the long-term vigorous agitation of pump and other elements, easily form emulsion, make the rotten goods of working media hydrolysis generate sediment, cause work system corrosion and corrosion, so require working media to have good resistance to emulsion. Working media can produce bubble after entrained air in the course of the work simultaneously, cause cavitation phenomenons, destroy hydraulic valve, these situations are all to improve the operating efficiency of valve and service life from improving the angle of working media, but the situation that affects working media is very many, and hard to guard against, so unreliable, this just needs a kind of fundamentally can playing prevent because of working media scratch valve wall and can effectively prevent the measure of working media corrosive liquid pressure valve.
Summary of the invention
Goal of the invention: in order to solve the deficiencies in the prior art, the invention provides one overcome override pressure large, make the anti-scratch and corrosion resistant pressure maintaining valve of valve interior wall.
Technical scheme: in order to realize above object, the anti-scratch corrosion resistant pressure maintaining valve of one of the present invention, it is characterized in that: it comprises: regulating nut, pressure spring, cone valve, cone valve spring, valve body, spring, spool and main valve body, the top of described main valve body is provided with valve body, in main valve body, be provided with spool and the spring that is positioned at spool top, in valve body, be provided with cone valve, cone valve right side is provided with cone valve spring, the left side of cone valve is provided with pressure spring, the outside of pressure spring is arranged with regulating nut, by the thrust of regulating nut control and regulation spring, thereby realize the pressure at the oil-in place that adjusts flow stabilizing valve, set pressure value 6.3 ~ 6.5MP,
The right side of described cone valve spring is provided with oilhole A, and oilhole B is located on valve body and with oilhole A and is connected;
The oilhole D that described main valve body is provided with is connected with oil return opening; The oilhole F that main valve body is provided with is connected with oil-in; Described oilhole E is located on spool, and described oilhole E is damping hole;
Described oilhole H is connected with the oil back chamber D on main valve body through valve body.
As present invention further optimization, described main valve body is provided with remote control orifice, remote control orifice is connected by micro electromagnetic guiding valve and fuel tank, because the pressure on spool top is close to zero, spool is upwards lifted to extreme higher position, because spring is very soft, so at this moment pressure oil mouth pressure is very low, make working connection off-load, pressure unloading is lower, and the power loss of system is just less.
As present invention further optimization, described oilhole A, oilhole B, remote control orifice, oilhole D, oilhole E, the surface of oilhole F and oilhole H is coated with anticorrosive coat, by the surperficial anticorrosive coating at oilhole and remote control orifice, can effectively avoid the phenomenon that on hole wall, the appearance because of cut causes hole wall to be corroded, the surface of anticorrosive coat is coated with anti-scratch layer, effectively prevent from, in the time that the degree of purity situation not high, that have impurity of working oil occurs, the phenomenon that easily occurs cut on valve inner valve wall being occurred.
As present invention further optimization, described anticorrosive coat is coated in and on oilhole wall, is treated its cooling obtaining by anti-corrosion material.
Anti-corrosion material by mass percent is: the compositions of mixtures that the castor oil of 46～47 parts, the dibutyl phthalate of 4～5 parts, the calcium carbonate of 34～35 parts, the silica of 11～12 parts, the titanium dioxide of 2～3 parts, the Y-glycidyl ether oxygen propyl trimethoxy silicane of 0.3～0.4 part, the dibutyl tin laurate of 0.01～0.02 part, the titanium dioxide of 2.3～2.69 parts or titanium dioxide and titanium orchid or titanium are black.
The making step of anticorrosive coat is as follows:
Step a: put into baking oven after calcium carbonate, silica and titanium dioxide are mixed, dry after 2～3h at the temperature of 200 DEG C, be cooled to room temperature, obtain mixed-powder stand-by;
Step b: castor oil, dibutyl phthalate, Y-glycidyl ether oxygen propyl trimethoxy silicane, dibutyl tin laurate and titanium dioxide or titanium dioxide and titanium orchid or the black mixture of titanium are put into stirred tank and stir 30 ~ 40min, obtain mixture;
Step c: the mixed-powder obtaining in step a is added in the stirred tank in step b and stirred, until the mixed-powder that step a obtains dissolves in the mixture that step b obtains completely;
Steps d: the mixture finally step c being obtained is coated on oilhole wall, can obtain anticorrosive coat after it is cooling.
As present invention further optimization, described anti-scratch layer is coated in and on anticorrosive coat, is treated its cooling obtaining by anti-scratch coating.
Anti-scratch coating by mass percent is: one or more in the polyphenylene sulfide of 45 ~ 55 parts, the wear-resistant ceramic particle of 0.5 ~ 1.5 part, toluene, the xylene organic solvent of 3 ~ 4.5 parts, the carbon fiber of 20 ~ 35 parts, the polytetrafluoroethylene (PTFE) of 2 ~ 8 parts, the amine hardener of 20 ~ 35 parts form and be mixed to form base-material. By mass percent be: one or more in the polyphenylene sulfide of 45 ~ 55 parts, the paraffin of 0.5 ~ 1 part, toluene, the xylene organic solvent of 3～4.5 parts of 3 ~ 5 parts, the carbon fiber of 20 ~ 45 parts, the polytetrafluoroethylene (PTFE) of 4 ~ 16 parts, the amine hardener of 15 ~ 25 parts are mixed to form auxiliary material. Wherein base-material and auxiliary material quality proportion are 1: 1～1: 1.5.
The making step of anti-scratch layer is as follows:
Step (1): the polyphenylene sulfide in base-material, wear-resistant ceramic particle, carbon fiber, polytetrafluoroethylene (PTFE) and amine hardener are mixed in proportion, obtain mixture;
Step (2): the mixture that step (1) is obtained stirs; To stir after mixture in add instant additive, obtain base fluid;
Step (3): the polyphenylene sulfide in auxiliary material, paraffin, carbon fiber, polytetrafluoroethylene (PTFE) and amine hardener are mixed in proportion, obtain mixture;
Step (4): the mixture that step (3) is obtained stirs; To stir after mixture in add instant additive, obtain auxiliary liquid;
Step (5): institute's base fluid that obtains and auxiliary liquid in step (2) and step (4) are mixed in proportion, obtain preliminary liquid;
Step (6): the preliminary liquid that step (5) is obtained heats, heating-up temperature is 60～80 DEG C, the heat time is 15 minutes, is coated on cooling complete anticorrosive coat and can obtains anti-scratch layer after having heated.
As present invention further optimization, the thickness of described anticorrosive coat is 50 μ m ~ 80 μ m, and the thickness of anti-scratch layer is 100 μ m ~ 150 μ m.
Beneficial effect: the anti-scratch corrosion resistant pressure maintaining valve of one provided by the invention, compared with prior art, has the following advantages:
1. because spool upper pressure is definite value after pressure spring is set up, so that the numerical value of inlet pressure changes in the time that spillway discharge changes is less, i.e. pressure regulation is poor less than normal, has overcome the large shortcoming of override pressure;
2. due to the effect of damping hole on spool, main valve plug vibration is less, thereby pressure oscillation is little, has improved the stable working of pressure maintaining valve;
3. remote control orifice is connected by micro electromagnetic guiding valve and fuel tank, and the power loss of system is reduced;
4, by the surperficial anticorrosive coating at oilhole and remote control orifice, can effectively avoid the phenomenon that on hole wall, the appearance because of cut causes hole wall to be corroded;
5. apply anti-scratch layer by the surface at anticorrosive coat, effectively prevent from, in the time that the degree of purity situation not high, that have impurity of working oil occurs, the phenomenon that easily occurs cut on valve inner valve wall being occurred.
Brief description of the drawings
Fig. 1 is full sectional view of the present invention;
Fig. 2 is partial sectional view of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, further illustrate the present invention.
As shown in Figure 1 and Figure 2, the anti-scratch corrosion resistant pressure maintaining valve of one of the present invention it comprise: regulating nut 1, pressure spring 2, cone valve 3, cone valve spring 4, valve body 5, spring 6, spool 7 and main valve body 8.
The top of main valve body 8 is provided with valve body 5, in main valve body 8, be provided with spool 7 and the spring 6 that is positioned at spool 7 tops, be provided with cone valve 3 in valve body 5, cone valve 3 right sides are provided with cone valve spring 4, the left side of cone valve 3 is provided with pressure spring 2, and the outside of pressure spring 2 is arranged with regulating nut 1; .
Embodiment 1
Step a: put into baking oven after the titanium dioxide that is the calcium carbonate of 34 parts, the silica of 11 parts and 2 parts by mass percent mixes, dry after 2h at the temperature of 200 DEG C, be cooled to room temperature, obtain mixed-powder stand-by;
Step b: the titanium dioxide that is the castor oil of 46 parts, the dibutyl phthalate of 4 parts, the Y-glycidyl ether oxygen propyl trimethoxy silicane of 0.3 part, the dibutyl tin laurate of 0.01 part and 2.3 parts by mass percent is put into stirred tank and stirred 30min, obtains mixture;
Step c: the mixed-powder obtaining in step a is added in the stirred tank in step b and stirred, until the mixed-powder that step a obtains dissolves in the mixture that step b obtains completely, then be coated on oilhole wall, after it is cooling, can obtain anticorrosive coat 9, the thickness of anticorrosive coat 9 is 50 μ m;
Steps d: be that the polyphenylene sulfide of 45 parts, the wear-resistant ceramic particle of 0.5 part, the carbon fiber of 20 parts, the polytetrafluoroethylene (PTFE) of 2 parts and the amine hardener of 20 parts mix by mass percent, obtain mixture and stir, then in the mixture after stirring, add the xylene organic solvent of 3 parts, obtain base fluid;
Step e: be that the polyphenylene sulfide of 45 parts, the paraffin of 0.5 part, the carbon fiber of 20 parts, the polytetrafluoroethylene (PTFE) of 4 parts and the amine hardener of 15 parts fully mix by mass percent, obtain mixture, then to stir after mixture in add xylene organic solvent, obtain auxiliary liquid;
Step f: base fluid and auxiliary liquid are mixed in the ratio of 1: 1, obtain preliminary liquid, again preliminary liquid is heated, heating-up temperature is 60 DEG C, heat time is 15min, after having heated, be coated on cooling complete anticorrosive coat and can obtain anti-scratch layer 10, the thickness of anti-scratch layer 10 is 100 μ m.
In the time that use is of the present invention, pressure oil enters from oilhole F86, pressure oil acts on the lower end of spool 7, pressure oil is again through oil-through hole E85 simultaneously, namely damping hole, then enter the top of spool 7, and act on cone valve 3 through oil-through hole B82 and oilhole A81, in the time that system pressure is lower, can't open pressure regulator valve time, cone valve 3 cuts out, there is no fluid through oil-through hole E85, so the oil pressure at spool 7 two ends is equal, under the effect of spool 7 upper springs 6, make spool 7 be in position bottom, spool 7 is sealed.
When system pressure is elevated to can open pressure regulator valve time, cone valve 3 just compresses pressure spring 2 opens valve port, and pressure oil is by oilhole E85, oilhole B82 and oilhole A81, and through cone valve 3, oilhole H87 flows back to oilhole D84 and enters main valve oil pocket, then flows back to fuel tank. Due to the effect of damping hole, produce Pressure Drop, so the oil pressure of spool 7 bottoms is greater than top oil pressure, when poor the produced effect of spool 7 pressure at two ends exceedes used time of doing of spring 6, main valve body 8, by jack-up, is opened main valve body 8, and oilhole F86 and oilhole D84 are communicated with, a large amount of fluid is by primary valve reducing pressure by regulating flow, then process hydraulic fluid port flows back to fuel tank.
Control to adjust the thrust of spring 2 by employing regulating nut 1, just can adjust the pressure at pressure maintaining valve oil-in place, set pressure value 6.3MP
Embodiment 2
Step a: put into baking oven after the titanium dioxide that is the calcium carbonate of 35 parts, the silica of 12 parts and 3 parts by mass percent mixes, dry after 3h at the temperature of 200 DEG C, be cooled to room temperature, obtain mixed-powder stand-by;
Step b: be that the titanium dioxide of the castor oil of 47 parts, the dibutyl phthalate of 5 parts, the Y-glycidyl ether oxygen propyl trimethoxy silicane of 0.4 part, the dibutyl tin laurate of 0.02 part and 2.69 parts and the mixture of titanium orchid are put into stirred tank and stirred 40min by mass percent, obtain mixture;
Step c: the mixed-powder obtaining in step a is added in the stirred tank in step b and stirred, until the mixed-powder that step a obtains dissolves in the mixture that step b obtains completely, then be coated on oilhole wall, after it is cooling, can obtain anticorrosive coat 9, the thickness of anticorrosive coat 9 is 80 μ m;
Steps d: be that the polyphenylene sulfide of 55 parts, the wear-resistant ceramic particle of 1.5 parts, the carbon fiber of 35 parts, the polytetrafluoroethylene (PTFE) of 8 parts and the amine hardener of 35 parts mix by mass percent, obtain mixture and stir, then in the mixture after stirring, add the xylene organic solvent of 4.5 parts, obtain base fluid;
Step e: be that the polyphenylene sulfide of 55 parts, the paraffin of 1 part, the carbon fiber of 45 parts, the polytetrafluoroethylene (PTFE) of 16 parts and the amine hardener of 25 parts fully mix by mass percent, obtain mixture, then to stir after mixture in add xylene organic solvent, obtain auxiliary liquid;
Step f: base fluid and auxiliary liquid are mixed in 1: 1.5 ratio, obtain preliminary liquid, again preliminary liquid is heated, heating-up temperature is 80 DEG C, heat time is 15min, after having heated, be coated on cooling complete anticorrosive coat and can obtain anti-scratch layer 10, the thickness of anti-scratch layer 10 is 150 μ m.
In the time that use is of the present invention, pressure oil enters from oilhole F86, pressure oil acts on the lower end of spool 7, pressure oil is again through oil-through hole E85 simultaneously, namely damping hole, then enter the top of spool 7, and act on cone valve 3 through oil-through hole B82 and oilhole A81, in the time that system pressure is lower, can't open pressure regulator valve time, cone valve 3 cuts out, there is no fluid through oil-through hole E85, so the oil pressure at spool 7 two ends is equal, under the effect of spool 7 upper springs 6, make spool 7 be in position bottom, spool 7 is sealed.
When system pressure is elevated to can open pressure regulator valve time, cone valve 3 just compresses pressure spring 2 opens valve port, and pressure oil is by oilhole E85, oilhole B82 and oilhole A81, and through cone valve 3, oilhole H87 flows back to oilhole D84 and enters main valve oil pocket, then flows back to fuel tank. Due to the effect of damping hole, produce Pressure Drop, so the oil pressure of spool 7 bottoms is greater than top oil pressure, when poor the produced effect of spool 7 pressure at two ends exceedes used time of doing of spring 6, main valve body 8, by jack-up, is opened main valve body 8, and oilhole F86 and oilhole D84 are communicated with, a large amount of fluid is by primary valve reducing pressure by regulating flow, then process hydraulic fluid port flows back to fuel tank.
Control to adjust the thrust of spring 2 by employing regulating nut 1, just can adjust the pressure at pressure maintaining valve oil-in place, set pressure value 6.5MP.
Above-described embodiment is only explanation technical conceive of the present invention and feature, its objective is to allow to be familiar with these those skilled in the art and can to understand content of the present invention enforcement according to this, can not limit the scope of the invention with this. All equivalents that Spirit Essence is made according to the present invention or modification, within all should being encompassed in protection scope of the present invention.
Claims (6)
1. an anti-scratch corrosion resistant pressure maintaining valve, it is characterized in that: it comprises: regulating nut (1), pressure spring (2), cone valve (3), cone valve spring (4), valve body (5), spring (6), spool (7) and main valve body (8), the top of described main valve body (8) is provided with valve body (5), in main valve body (8), be provided with spool (7) and be positioned at the spring (6) of spool (7) top, in valve body (5), be provided with cone valve (3), cone valve (3) right side is provided with cone valve spring (4), the left side of cone valve (3) is provided with pressure spring (2), the outside of pressure spring (2) is arranged with regulating nut (1),
The right side of described cone valve spring (4) is provided with oilhole A(81), oilhole B(82) be located in valve body (5) upper and with oilhole A(81) be connected;
The oilhole D(84 that described main valve body (8) is provided with) be connected with oil return opening; The oilhole F (86) that main valve body (8) is provided with is connected with oil-in; Described oilhole E(85) be located in spool (7) above, described oilhole E (85) is damping hole;
Described oilhole H(87) through valve body (5) and oil back chamber D(84 on main valve body (8)) be connected.
2. the anti-scratch corrosion resistant pressure maintaining valve of one according to claim 1, is characterized in that: described main valve body (8) is provided with remote control orifice (83).
3. the anti-scratch corrosion resistant pressure maintaining valve of one according to claim 1, it is characterized in that: described oilhole A(81), oilhole B(82), remote control orifice (83), oilhole D(84), oilhole E(85), oilhole F (86) and oilhole H(87) surface be coated with anticorrosive coat (9), the surface of anticorrosive coat (9) is coated with anti-scratch layer (10).
4. the anti-scratch corrosion resistant pressure maintaining valve of one according to claim 3, is characterized in that: described anticorrosive coat (9) is coated in and on oilhole wall, is treated its cooling obtaining by anti-corrosion material.
5. the anti-scratch corrosion resistant pressure maintaining valve of one according to claim 3, is characterized in that: described anti-scratch layer (10) is coated in and on anticorrosive coat (9), is treated its cooling obtaining by anti-scratch coating.
6. the anti-scratch corrosion resistant pressure maintaining valve of one according to claim 3, is characterized in that: the thickness of described anticorrosive coat (9) is 50 μ m ~ 80 μ m, and the thickness of anti-scratch layer (10) is 100 μ m ~ 150 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610064294.3A CN105587705A (en) | 2016-01-29 | 2016-01-29 | Scraping resisting and corrosion resisting pressure stabilizing valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610064294.3A CN105587705A (en) | 2016-01-29 | 2016-01-29 | Scraping resisting and corrosion resisting pressure stabilizing valve |
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| Publication Number | Publication Date |
|---|---|
| CN105587705A true CN105587705A (en) | 2016-05-18 |
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|---|---|---|---|
| CN201610064294.3A Pending CN105587705A (en) | 2016-01-29 | 2016-01-29 | Scraping resisting and corrosion resisting pressure stabilizing valve |
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| CN (1) | CN105587705A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107990006A (en) * | 2017-11-24 | 2018-05-04 | 苏州喷声电子科技有限公司 | A kind of precise pressure regulating valve |
| WO2018094559A1 (en) * | 2016-11-22 | 2018-05-31 | 太仓市微贯机电有限公司 | Scratch-resistant and corrosion-resistant pressure maintaining valve |
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| WO2018094559A1 (en) * | 2016-11-22 | 2018-05-31 | 太仓市微贯机电有限公司 | Scratch-resistant and corrosion-resistant pressure maintaining valve |
| CN107990006A (en) * | 2017-11-24 | 2018-05-04 | 苏州喷声电子科技有限公司 | A kind of precise pressure regulating valve |
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Application publication date: 20160518 |