CN208503125U - Slide valve and Digital Valve Controller - Google Patents
Slide valve and Digital Valve Controller Download PDFInfo
- Publication number
- CN208503125U CN208503125U CN201820171676.0U CN201820171676U CN208503125U CN 208503125 U CN208503125 U CN 208503125U CN 201820171676 U CN201820171676 U CN 201820171676U CN 208503125 U CN208503125 U CN 208503125U
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- Prior art keywords
- spool
- sleeve
- slide valve
- pressure
- coating
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- 239000011248 coating agent Substances 0.000 claims abstract description 69
- 238000000576 coating method Methods 0.000 claims abstract description 69
- 239000000463 material Substances 0.000 claims abstract description 21
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims description 11
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims description 5
- 229910003460 diamond Inorganic materials 0.000 claims description 5
- 239000010432 diamond Substances 0.000 claims description 5
- 239000012530 fluid Substances 0.000 description 25
- 238000000034 method Methods 0.000 description 16
- 238000010276 construction Methods 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 13
- 238000005260 corrosion Methods 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 10
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- 125000006850 spacer group Chemical group 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001566 austenite Inorganic materials 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000012369 In process control Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000001997 corrosion-resisting alloy Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910021385 hard carbon Inorganic materials 0.000 description 1
- 238000010965 in-process control Methods 0.000 description 1
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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
- 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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
-
- 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
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/005—Particular materials for seats or closure elements
-
- 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
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
-
- 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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Multiple-Way Valves (AREA)
- Sliding Valves (AREA)
Abstract
The utility model relates to slide valves and Digital Valve Controller.Disclose hard conating slide valve.Exemplary slide includes sleeve and the spool that is located in sleeve.Sleeve and spool are made of resistant material.Slide valve includes the wear-resistant coating at least one of spool or sleeve.
Description
Technical field
Present disclosure broadly relates to slide valve, and more particularly to the side for using supply pressure to carry out offset spool valve
Method and device.
Background technique
Slide valve (spool valve) is component common in many hydraulic and/or pneumatic machine and system.Slide valve is used for
Control and/or guide fluid along one or more input ports of slide valve based on position of the spool (spool) in slide valve
To the flowing in the different paths between one or more output ports.
Utility model content
Many known slide valves have the supply pressure for being directed to specific supply pressure and/or close limit and the fixation designed
Bias force.Correspondingly, in order to meet the demand for using slide valve in the associated different applications of wide range pressure, manufacturer
It is faced with the cost of the inventory of production and the slide valve for maintaining a variety of expection supply pressures with wide scope to match.Although these options
Availability allow end user to be that its desired application obtains suitable slide valve, but it is expected for end user for it
Application identification and obtain slide valve appropriate and/or when they in new different application using slide valve when there are costs and multiple
Polygamy.
The utility model discloses a kind of slide valves, comprising:
Sleeve；
It will be positioned in the spool in the sleeve, the sleeve and the spool are made of resistant material；With
It is applied to the wear-resistant coating of at least one of the spool or the sleeve.
In one embodiment of the utility model, the resistant material is austenitic stainless steel.
In one embodiment of the utility model, the coating is diamond like carbon coating.
In one embodiment of the utility model, the wear-resistant coating has about 1 μm of thickness.
In one embodiment of the utility model, the wear-resistant coating, which has, to be less than between the spool and the sleeve
Radial clearance thickness.
In one embodiment of the utility model, the spool and the sleeve be it is prefabricated, the prefabricated spool
Outer diameter will be processed to increase the spacing between the spool and the sleeve before the coating is applied to the spool.
It is described after the coating is applied to the outer diameter of the spool in one embodiment of the utility model
The internal diameter of sleeve will be processed to required size.
In one embodiment of the utility model, the coating is applied to the outer surface of the crestal surface on the spool.
In one embodiment of the utility model, the coating be not applied to the spool on the spool
The region of the crestal surface spool spaced apart.
In one embodiment of the utility model, the slide valve is realized in Digital Valve Controller and is realized.
In addition, the invention also discloses a kind of Digital Valve Controllers, comprising:
Shell；With
The intracorporal slide valve of shell, the slide valve include the slide valve spool that can be moved in sleeve, and wear-resistant coating is applied
Onto at least one of the spool slide valve or the sleeve, with the directly contact of the spool slide valve and the sleeve it
Between create barrier layer.
In one embodiment of the utility model, the sleeve and the spool are made of austenitic stainless steel.
In one embodiment of the utility model, the coating is diamond like carbon coating.
In one embodiment of the utility model, the wear-resistant coating, which has, to be less than between the spool and the sleeve
Radial clearance thickness.
In one embodiment of the utility model, the coating is applied to the outer surface of the crestal surface on the spool.
In one embodiment of the utility model, the part for the spool of the spool being spaced apart with the crestal surface
It is not covered by the coating.
Finally, the invention also discloses a kind of methods, comprising:
Processing is used for the sleeve of slide valve；
The spool that processing is slidably fitted in the sleeve is to be slidably fitted in the sleeve, the spool and the set
Cylinder is formed by resistant material；And
Wear-resistant coating is applied at least one of the sleeve or the spool.
In one embodiment of the utility model, the thickness of the coating is less than between the spool and the sleeve
Gap.
In one embodiment of the utility model, the resistant material is austenitic stainless steel.
In one embodiment of the utility model, the coating is diamond like carbon coating.
Disclose hard conating slide valve.Exemplary slide includes sleeve and the spool that is located in sleeve.Sleeve and spool by
Resistant material is made.Slide valve includes the wear-resistant coating at least one of spool or sleeve.
Exemplary digital valve control includes shell and the intracorporal slide valve of shell.Slide valve includes the line that can be moved in sleeve
Axis.Wear-resistant coating should be located at least one of spool or sleeve, to create between directly the contacting of spool and sleeve
Barrier layer (barrier).
Illustrative methods include processing for the sleeve of slide valve and processing is fitted slidably within spool in sleeve.Spool
It is made with sleeve of resistant material.Illustrative methods include that wear-resistant coating is applied at least one of sleeve or spool.
Example disclosed herein includes for generating spool bias force based on bias pressure corresponding with supply pressure
Device.In this way, when supply pressure is changed based on the specific application that slide valve is implemented in it, bias pressure (and
Associated bias force) proportionally change.In this way, manufacturer does not need to provide so many slide valve modification, because
It can be used for multiple applications associated with wide scope supply pressure according to the single slide valve of introduction construction disclosed herein.This
Outside, exemplary slide disclosed herein saves end user and is obtaining the cost in multiple slide valves, and it is being specific for reducing
The complexity and risk of mistake when using the slide valve appropriate for selecting matching.
Detailed description of the invention
Fig. 1-3 is the perspective view splitted according to the exemplary slide of introduction construction disclosed herein, wherein spool is in
Different positions.
Fig. 4 is the cross-sectional view of the exemplary slide of Fig. 1-3.
Fig. 5 is the exploded view of the partly cut-away of the exemplary slide of Fig. 1-4.
Fig. 6 is the cross-sectional view according to another exemplary slide of introduction construction disclosed herein.
Fig. 7 is the exploded view of the partly cut-away of the exemplary slide of Fig. 6.
Fig. 8 is the cross-sectional view according to another exemplary slide of introduction construction disclosed herein.
Fig. 9 is the cross-sectional view according to another exemplary slide of introduction construction disclosed herein.
Figure 10 be include Fig. 1-5 exemplary slide exemplary digital valve control schematic diagram.
Figure 11 A is the close-up illustration of a part of one embodiment of exemplary slide, is shown with exemplary wear-resisting
The example spool of coating, the example spool can be realized in any one slide valve of Fig. 1-10.
Figure 11 B is the close-up illustration of a part of another embodiment of exemplary slide, is shown with exemplary resistance to
The example spool of coating is ground, which can realize in any one slide valve of Fig. 1-10.
Figure 11 C is the close-up illustration of a part of another embodiment of exemplary slide, is shown with exemplary resistance to
The example spool of coating is ground, which can realize in any one slide valve of Fig. 1-10.
Figure 12 is the flow chart for indicating the illustrative methods of exemplary slide of manufacture Figure 11 A, Figure 11 B and Figure 11 C.
Specific embodiment
Many known slide valves are controlled by input power, which pushes the spool in valve in one direction, and leads to
It is offset after the bias force for biasing spool in the opposite direction.In this known slide valve, what bias force was usually fixed, from
And allows and accurately control position of the spool in slide valve by changing input power relative to bias force.Many known
In slide valve, input power is generated by being applied to the input pressure of bobbin ends, and wherein input pressure corresponds to the pass slide valve
A part of the fluid supply pressure of guidance.This slide valve is answered for many differences associated with the supply pressure of wider range
In.Correspondingly, the range of the corresponding input pressure of this slide valve is also widely changed in different applications.
To work normally slide valve, slide valve uses the constant bias force for having appropriate intensity relative to input power, will slide
The opereating specification of valve is maintained at the center in the opereating specification of input power.Therefore, it is operated needed for slide valve in any specific application
Bias force depend on the application used in supply pressure.
Unfortunately, many known slide valves there is the supply pressure for specific supply pressure and/or close limit and
The bias force of the fixation of design.Correspondingly, slide valve is used in the associated different application of wide range pressure in order to meet
Demand, manufacturer are faced with the cost of the inventory of production and the slide valve for maintaining a variety of expection supply pressures with wide scope to match.
Although the availability of these options allows end user to be that its desired application obtains suitable slide valve, for end user
For for its desired application identification and obtain slide valve appropriate and/or when they in new different applications using slide valve when
There are costs and complexity.
In order to overcome these disadvantages, example disclosed herein includes for being based on bias pressure corresponding with supply pressure
To generate the device of spool bias force.In this way, when supply pressure is changed based on the specific application that slide valve is implemented in it
When change, bias pressure (and associated bias force) proportionally changes.In this way, manufacturer does not need to provide so many
Slide valve modification, because according to it is disclosed herein introduction construction single slide valve can be used for it is associated with wide scope supply pressure
Multiple applications.In addition, exemplary slide disclosed herein, which saves end user, is obtaining the cost in multiple slide valves, and drop
The complexity and risk of the low mistake in the slide valve appropriate to match for specific application selection.
In order to realize the appropriate balance of power on spool, so that for given supply pressure, along the operation model of input power
The desired of the stroke span for causing spool along spool that increase or reduce for the input power enclosed moves, under given supply pressure
Bias force needs to fall into the opereating specification of input power.In other words, although input power can with minimum input pressure (for example,
Atmospheric pressure) become between associated minimum force and maximum, force associated with maximum input pressure (for example, full supply pressure)
Change, but must be fallen between minimum force and maximum, force by the bias force that bias pressure generates.
When two power are all based on supply pressure, the maximum input power that foundation is greater than bias force can be complete in different ways
At.In some instances, apply the face of bias pressure on it by reducing relative to the area for applying input pressure on it
Product is to control bias force.For example, bias pressure is applied in diaphragm, piston or bellows in some disclosed examples
Any one, defined by area be less than directly application input pressure bobbin ends area.Show in disclosed herein other
In example, bias force is controlled by reducing bias pressure relative to supply pressure.For example, being supplied in some disclosed examples
Pressure is answered to export by the first current limiter and partially by the second current limiter to form lower pressure (for example, atmosphere).
In such an example, the first and second current limiters are placed in series, to limit between the current limiter for corresponding to bias pressure
Between pressure.
Fig. 1-3 is the sectional perspective view according to the exemplary slide 100 of introduction construction disclosed herein.As other slide valves one
Sample, exemplary slide 100 includes can spool 102 selectively moved along the channel of shell 106 104 or sliding.Illustrated
Example in, spool 102 be shown at the minimum stroke position corresponding to Fig. 1 first position, in correspond to Fig. 2
In zero position the second position and in correspond to Fig. 3 in maximum travel position the third place.In certain examples
In, the input power based on the first end 107 for being applied to spool 102 relative to being applied to and first end 107 on the contrary with input power
The bias force of opposite second end 108, spool 102 are throttled between minimum stroke position and maximum travel position
(throttled).Input power intensity compared with bias force has determined whether spool 102 moves and along its stroke span
Which direction it is mobile.
Close to spool 102 midpoint and each of end 107,108 be spool 102 diameter be greater than spool
The part (referred to herein as crestal surface (land) 109) of the diameter of 102 rest part, and it is dimensioned to base
The sleeve 110 (for example, via sealing ring and/or via close tolerance) being arranged in channel 104 is sealingly engaged in sheet.Online
There is the part with small diameter between the crestal surface 109 of axis 102 to limit channel or groove 112, provides fluid in sleeve
The path advanced between crestal surface 109 in 110.In addition, sleeve 110 has multiple openings shown in example as shown
113, multiple openings 113 are aligned with multiple ports 114,116,118,120,122 in the shell 106 of exemplary slide 100,
So that channel 104 (for example, in groove 112 of spool 102) is connected to the external fluid of exemplary slide 100.In addition, with this
Kind mode, depending on the position of spool 102, one or more ports in port 114,116,118,120,122 can be with fluid
Connection with limit via a port in port 114,116,118,120,122 travel across spool 102 groove and from
The path of the fluid of another port outflow in port 114,116,118,120,122.
For example, the position of crestal surface 109 and groove 112 limits when spool 102 is in minimum stroke position as shown in Figure 1
The first fluid path (being indicated by arrow 124) between port 114,116 and the second fluid between port 118,120 are determined
Path (is indicated) by arrow 126.When spool 102 is in maximum travel position as shown in Figure 3, crestal surface 109 and groove 112
The 4th fluid between third fluid path (by arrow 128) between position restriction port 116,118 and port 120,122
Path (is indicated) by arrow 130.When spool 102 is in zero position as shown in Figure 2, crestal surface 109 covers or is blocked in sleeve
Correspond to the opening 113 of Centronics port 118 and two exterior side ports 114,122 in 110 so that port 114,116,118,120,
The connection of no one of 122 port flows.
Arrangement in the example as shown in Fig. 1-3 is suitable for control double-action control-valve, such as more detailed below with reference to Figure 10
As ground shows and describes.Particularly, in some examples, slide valve 100 is configured so that Centronics port 118 receives pressurization
The supply stream of fluid (for example, forced air) allows supply stream according to the position of spool 102 from adjacent port 116,120
In a port export, as long as spool 102 is not at the zero position of port blocked 118.In other words, when spool 102 is from zero-bit
(Fig. 2) is set towards when minimum stroke position (Fig. 1) movement, supply stream is along the second fluid road on direction shown in arrow 126
Diameter leads to the output stream (for example, B pressure is exported shown in Figure 10) at port 120.When spool 102 is from zero position (Fig. 2)
When mobile towards maximum travel position (Fig. 3), supply stream is led along the third fluid path on the direction indicated by arrow 128
Cause the output stream (for example, pressure of output terminals A shown in Figure 10) at port 116.In such an example, work as actuator
When by output stream actuating from port 116, the fluid of the displacement in actuator is forced back up through port 120, then when
Exhaust along when four flow path on direction defined by arrow 130 by adjacent port 122 (for example, showing in Figure 10
Exhaust outlet B out) discharge.Similarly, when output stream comes from port 120, the fluid of the displacement in actuator is forced to flow back
By port 116, then when fluid is along first fluid path on the direction limited by arrow 124, pass through adjacent end
Mouth 114 (for example, exhaust outlet A shown in Figure 10) discharge.
As described above, in some instances, the movement of spool 102 is by being applied to the input of the first end 107 of spool 102
Power controls, the input power with and input power to be applied to the bias force of second end 108 of spool 102 on the contrary related.Some
In example, input power is generated from the input pressure for the first end 107 for being applied to spool 102.In some instances, input power
It is provided via supply pressure, which is individually coupled to the supply port of spool 102 (for example, intermediate ends as described above
Mouth is 118).More specifically, in some instances, input pressure corresponds to by as the control strategy in Process Control System
The proportional supply pressure that electrical input signal (for example, 4-20 milliamperes of (mA) scaling signals) that is a part of and generating limits.It changes
Yan Zhi, in some instances, input pressure have between zero pressure or close to zero pressure (for example, atmospheric pressure) and by being supplied to
Between the pressure for the supply that the input signal of current-to-pressure (I/P) converter (for example, I/P converter 1008 of Figure 10) determines
Opereating specification.
In many known slide valves, the bias force for offsetting input power is provided by the control spring in slide valve.Control spring
The opposite end of spool is acted on scheduled initial compression.In this known slide valve, as input power increases (example
Such as, based on the increase of input pressure), spool is mobile towards control spring, thus compressed spring and increases bias force, until when defeated
Spool stops movement when entering power and roughly equal bias force.As input power reduces, control spring is by spool towards the defeated of spool
Enter end to push back.Correspondingly, many known slide valves need the control with proper strength of the opereating specification based on input pressure
Spring.In other words, if control spring is not strong enough due to high input pressure range (for example, due to high supply pressure), come
Control spring is overcome from the power of input pressure and control spring is prevented suitably to bias spool.Similarly, if control bullet
Spring is too strong due to low input pressure range, then the power from input pressure cannot move spool as needed.Therefore, it is many
It is application specific that the rated value of spring is controlled used in the slide valve known, because must be based on supply pressure (and input pressure
Correspondence range) select spring.Therefore, if end user wishes in the different applications with different supply pressures
Realize slide valve, then they are necessary for new opplication determination and obtain the spring of matching appropriate, then dismantle before using slide valve
With replacement spring.Alternatively, end user needs completely self-contained slide valve, it is capable of handling associated with interested application
Pressure.Any one selection can all bring the cost, complexity and inconvenience that this slide valve is realized in a variety of different applications.
Example disclosed herein by from the bias pressure for the second end 108 for being applied to spool 102 generate bias force come
Overcome these disadvantages of known slide valve, wherein bias pressure is based on supply pressure.In this way, bias force and input
Any increase or decrease of the opereating specification of power proportionally increases or decreases because input power and bias force all with supply pressure
It is proportional.Because of a part (being based on ratio input signal) of input pressure corresponding to supply pressure, on spool 102 most
Big input power corresponds to the input pressure of supply pressure.In this way, supply pressure to be directly applied to the opposite end of spool 102
(for example, bias pressure is identical as supply pressure) causes bias force to be equal to maximum input power.As a result, any lesser input power is all
It will lead to bias force and overcome input power, to prevent to the position of spool 102 and/or the suitable control of movement.Therefore, one
In a little examples, slide valve 100 is constructed such that bias force is less than maximum input power although being based on supply pressure.Show some
In example, the bias force that foundation is less than maximum input power is inclined but reduce application thereon as bias pressure by using supply pressure
The area of the spool 102 of pressure is set to realize.In some instances, the bias pressure for being applied to spool 102 is controlled such that
It is less than supply pressure (for example, a part that bias pressure is supply pressure), thus reduces bias pressure, even if applying on it
Add the area of bias pressure identical as the area of input pressure is applied on the input side of spool 102.Additionally or alternatively, exist
In some examples, bias pressure applies the area of bias pressure relative to supply pressure and on it relative to applying on it
The area of input pressure can change in any suitable manner, with the pass established between desired input power and bias force
System.
In the example as illustrated by Fig. 1-3, exemplary slide 100 includes the input terminal that there is area to be less than spool 102
Area diaphragm 132.In this way, when input pressure is equal or close to full supply pressure, the input power of generation will be big
In bias force, because input pressure will act at the area of the diaphragm 132 than bias pressure (that is, supply pressure) effect on it
On bigger area.In some instances, diaphragm 132 is via with the cross-sectional area roughly the same with the area of diaphragm 132
Piston 134 is coupled to spool 102.Since the diameter (small diameter corresponding to diaphragm 132) of piston 134 is less than spool
102 outer diameter, in some instances, slide valve 100 include spacer 136 to surround piston 134 and piston 134 is maintained at appropriate
Position.
Applying bias pressure to generate bias force on the area of diaphragm 132 is based on input indicated by I/P converter
The opereating specification of pressure and corresponding control strategy.In some instances, diaphragm 132 has substantially fixed area, and
Regardless of spool 102 is along the position of its stroke span.In such an example, although area is substantial constant and applied
Bias pressure it is substantial constant (for example, supply pressure is substantial constant), but due to the elasticity of diaphragm 132, bias force exists
Change in the stroke span of spool 102.In this way, the variation of input pressure is so that spool 102 is mobile, until input power
Reach balance between bias force, to allow the position of the spool 102 to the control spring for being similar to above-mentioned known slide valve
Accurate control.Additionally or alternatively, in some instances, slide valve 100 includes bias spring 138, in bias spring 138
Increase the variation of the bias force of the stroke span along spool 102 when elongation and/or compression.In some instances, in bias spring
In the case that 138 are not used in counteracting input power, bias spring 138 still includes in exemplary slide 100 to provide failure peace
Entirely, so as in the feelings of supply pressure and corresponding input pressure and bias pressure loss (for example, generally reduce or be zero)
Spool 102 is biased to invalid position under condition.In some such examples, bias spring 138 can have more known than above-mentioned
Slide valve used in control the significantly lower spring rate of spring because bias spring 138 need not offset it is defeated on spool 102
Enter the power of pressure.
In some instances, diaphragm 132 is omitted, and bias pressure is applied directly to piston 134, is limited identical
Fixed-area, to generate bias force.In some such examples, piston 134 is fabricated at be assemblied in close tolerance between
With reduction (for example, minimum) leakage in spacing body 136.Additionally or alternatively, in some instances, via being placed on piston
Sealing ring between 134 and spacer 136 leaks to reduce.
In other examples, diaphragm is replaced using bellows to limit the area of reduction, it can be on the area of the reduction
Apply bias pressure to generate the bias force as shown in the exemplary slide 800 of Fig. 8.Exemplary slide 800 can by with figure
The component of the slide valve of 100 same type of exemplary slide of 1-3 constructs.Therefore, exemplary slide 800 include spool 102,
Sleeve 110 and shell 106.However, being different from the exemplary slide 100 of Fig. 1-3, the exemplary slide 800 of Fig. 8 includes bellows
Bellows 802 in shell 804.In some instances, bellows 802 is coupled to spool 102 via adapter 806, adaptation
Device 806 is kept via spacer 807 and is aligned with spool 102.In the example shown, bellows 802 is held at opposite end
Lid 808 is closed.Shown in example as illustrated, bellows 802 limits reduced area 810, on the area 810 of the reduction
Apply bias pressure (for example, supply pressure), so that obtained bias force is less than the confession based on the opposite end for being applied to spool 102
Answer the maximum input power of pressure.In some instances, bellows 802, adapter 806 and end cap rigid connection.In this way,
As spool 102 moves in sleeve 110, bellows 802 is by the correspondingly expansion or shrinkage in the direction of motion of spool 102.
In some instances, bellows 802 acts also as fail safe to lose the feelings of (for example, be substantially reduced or be zero) in supply pressure
Spool 102 is pushed towards desired invalid position under condition.
Figure 4 and 5 are the respective cross section and decomposition view of the exemplary slide 100 of Fig. 1.Shown in example as illustrated, line
Axis 102 is arranged in sleeve 110.Piston 134 is surrounded by spacer 136 and is operably coupled to be kept by spool 102
Diaphragm 132 in diaphragm shell 140.Going barrel 142 is attached on diaphragm shell 140, to be fixed for bias spring
138 spring base 144.Supply side end cap 146 is by spring-compressed the power of predetermined amount is applied to spool in going barrel 142
On 102, so that spool is biased to fail-safe position when pressure is supplied and failed.In some instances, slide valve 100 via
The O-ring 148 supplied between side end cap 146 and going barrel 142 seals.In addition, as shown in the example illustrated by Figure 4 and 5,
The opposite end of exemplary slide 100, the spacer 150 that the end of spool 102 is attached surround and are entered the packet of side end cap 152
It encloses.
In some instances, spool valve described herein is constructed using the component of existing slide valve with according to introduction disclosed herein
New component combine to manufacture.In this way, existing slide valve is modified to implement introduction disclosed herein.Example
Such as, the exemplary slide 100 of Fig. 1-5 can be by using the Numatics company of state of Michigan Novi (Novi, Michigan)
ManufactureSome components of 2035 valves simultaneously replace other component to construct.Particularly, in illustrated example
In exemplary slide 100 correspond to and modified2035 valves, wherein original spring base, control bullet
Spring and end cap are by piston 134, separator 136, diaphragm 132, diaphragm shell 140, spring base 144, bias spring 138, hair
Barrel 142 and supply side end cap 146 are replaced.
Fig. 6 and Fig. 7 is respective cross-section figure and the decomposition of the another exemplary slide valve 600 according to introduction construction disclosed herein
Figure.What exemplary slide 600 can be manufactured by Numatics companyThe component of 15 valve of PA be similar to
Mode described in the exemplary slide 100 of upper combination Fig. 1-5 constructs.Particularly, exemplary slide 600 includes that can exist along setting
The spool 602 of the movement of sleeve 604 in shell 606, it is all these to both correspond toThe original portion of 15 valve of PA
Part.However, exemplary slide 600 be already provided with according to it is disclosed herein introduction construction new component, including piston 608, every
Off member 610, diaphragm shell 612, diaphragm 614, going barrel 616, spring base 618, bias spring 620 and supply side end cap 622.?
In some examples, input pressure that can be proportional to supply pressure is applied to the first end 624 of spool 602, in spool 602
Upper generation input power.In addition, in some instances, bias pressure is applied to diaphragm 614, opposite with first end 624
Bias force is generated on spool 602 via piston 608 at second end 626.In some instances, supply pressure is as biasing pressure
Power.In such an example, the area of the opereating specification design of diaphragm 614 based on input power, to be based on generated input power
The control that the movement to the slide valve 602 in sleeve 604 is realized with the difference of bias force, but regardless of the amount of supply pressure.With this
Mode, basis of the supply pressure as input pressure and bias pressure, as described above.
Fig. 9 is the cross-sectional view according to another exemplary slide 900 of introduction construction disclosed herein.Exemplary slide
900 can be similar to above the mode in conjunction with described in the exemplary slide 600 of Fig. 6 and Fig. 7 byPA 15
The component of valve constructs.Therefore, exemplary slide 900 includes spool 602, sleeve 604 and shell 606.However, be different from Fig. 6 and
The exemplary slide 600 of Fig. 7, Fig. 9 include the spring base 902 for being coupled directly to spool 602.In some instances, spring base 902
It is to be based on exemplary slide 900The original spring base that 15 valve of PA manufactures together.Illustrated by
In example,The primitive part of 15 valve of PA is and according to the new component group disclosed herein for instructing construction
It closes.Specifically, exemplary slide 900 includes the going barrel 904 for limiting the chamber 906 surrounded by end cap 908.Illustrated by
In example, chamber 906 accommodates bias spring 910, so as to the biasing with the exemplary slide 100 for being used for Fig. 1-5 as described above
The identical mode of spring 138 acts on spring base 902.
Shown in example as illustrated in Figure 9, going barrel 904 includes the first current limiter with the coupling of 906 serial fluid of chamber
912 and second current limiter 914.In some instances, the supply pressure that the first current limiter 912 is coupled to slide valve 900 to supply
Pressure and chamber 906 are in fluid communication.In addition, in such an example, the second current limiter 914 is exposed to lower than supply pressure
Two pressure, so that chamber 906 and second pressure are in fluid communication.In some instances, when fluid is forced air, the second limit
Stream device leads to the atmosphere (that is, second pressure is atmospheric pressure) outside slide valve 900 from chamber 906.In this way, with supply
Fluid (for example, air) filled chamber 906, some pressure in chamber 906 are exuded to atmosphere, cause to be applied directly to spool
Intermediate pressure (that is, bias pressure) in the chamber 906 of 602 second end 626, with relative to being applied to the first of spool 602
It holds 624 input pressure and biases spool 602.In such an example, different from the exemplary slide of Fig. 1-8 100,600,
800, the area for applying bias pressure on it in the exemplary slide 900 of Fig. 9 is not defined as being less than to be applied on it
The area of input pressure, to reduce generated bias force relative to maximum input power.But exemplary slide 900 is constructed
At make intermediate pressure or bias pressure between atmospheric pressure and supply pressure.In other words, in the illustrated example of Fig. 9,
Full supply pressure is not applied to spool 602, but since pressure via the second current limiter 914 constantly discharges into the atmosphere pressure
And apply intermediate pressure (for example, bias pressure).In some instances, the first current limiter 912 and the second current limiter 914 is accurate
Opereating specification of the size based on input pressure, so that generated input power and bias force (being based on intermediate pressure) can be along its rows
Journey span controls spool 602.Therefore, in some instances, intermediate pressure by with any increase or decrease of supply pressure and
It proportionally increases or decreases, increaseing accordingly or reduce so as to cause bias force, with the showing in above-mentioned Fig. 1-8 with bias pressure
The similar mode of the reduced area to work in example property slide valve 100,600,800 offsets input pressure.
As described above, in some instances, if supply pressure (and corresponding input pressure and bias pressure) is lost
(for example, significantly reduce or be zero), then bias spring 910 is used as fail-safe spool 602 is biased to desired fail bit
It sets.Additionally or alternatively, in some instances, bias spring 910 is also used for together with the bias force from bias pressure
Spool 602 is biased, partly to create the variation of the bias force for the position for corresponding to spool 602 (for example, being based on bias spring
910 elongation and/or compression).
Although exemplary slide 100,600,800,900 is described in detail above, introduction disclosed herein
Suitable for other slide valves.For example, have limit between the ports it is more, less and/or different fluid communication path more or
Other slide valves of less port can be modified according to introduction disclosed herein, to bias corresponding spool based on supply pressure.?
In some such examples, generated bias force can be by designing proper area that supply pressure is applied (for example, corresponding
In the area of diaphragm, piston or bellows) it limits.In other examples, the bias pressure corresponding to the ratio of supply pressure
Spool is applied to realize desired bias force.Additionally or alternatively, in some instances, bias pressure and apply thereon
The area of pressure can specifically be designed according to introduction disclosed herein, to establish in the supply pressure of potential wide scope
Appropriate relationship between applicable input power and generated bias force, because input pressure and bias pressure are all based on supply
Pressure.Although introduction disclosed herein may be used also in addition, above-mentioned example slide valve 100,600,800,900 is air slide
It is suitable for hydraulic efficiency slide valve.In addition, exemplary slide 100,600,800,900 disclosed herein and according to religion disclosed herein
Other slide valves for leading construction can be implemented in any suitable application for this slide valve.For example, as described above, exemplary
Slide valve 100,600,800,900 can be used for controlling as more completely shown in Figure 10 and described in control valve position.In addition, this
Literary disclosed introduction can also be used for when input power is not based on supply pressure, based on supply pressure offset spool valve (for example, electromagnetism
The slide valve of actuating, the slide valve activated manually etc.).
Figure 10 be include Fig. 1-5 exemplary slide 100 exemplary digital valve control (DVC) 1000 schematic diagram.
As other known DVC, exemplary DVC 1000 includes printed wiring board 1002, and printed wiring board 1002 is configured as base
It is passed in electrical input signal (for example, control room from Process Control System) and from position associated with control valve 1004
Sensor 1006 controls double-action control-valve 1004.In the example illustrated by, DVC 1000, which is received, passes through current-to-pressure (I/
P) the supply pressure that converter 1008 guides is based on input signal and position feedback institute with by printed wiring board 1002 to provide
The proportional input pressure of the driving signal of generation.
In many known DVC, input pressure is provided to internal relay, which uses input pressure
Come via in two output ends (for example, output terminals A and output end B) for being coupled to control valve 1004 an output end formed at
The pressure (or flow) of ratio is to accurately control the movement of valve.However, these known DVC are limited because it is internal after
Electric appliance cannot handle high flow rate (for example, high supply pressure).Therefore, these DVC are restricted to lesser fixing fabric structure
Actuator and/or with slower speed Mobile control valve.In order to overcome these disadvantages, some known DVC are couple to pneumatically
Booster is to realize higher pressure/flow rate.However, such solution is expensive, because it needs pneumatic increase
The additional component of depressor and the generated expense for safeguarding additional component.In addition, booster is likely difficult to adjust or change (example
Such as, when using DVC in different applications).
According to introduction disclosed herein, exemplary DVC 1000 includes slide valve 100 rather than internal relay, because of slide valve
It can handle pressure limit significantly more higher than known relay.Other slide valves 600,900 described herein or according to this
Another slide valve of literary disclosed introduction construction is also alternatively used to replace slide valve 100.Shown in example as illustrated, supply pressure
Power is directed to the input side of exemplary slide 100 (for example, via I/P converter 1008), until the supply port of slide valve 100
(for example, Centronics port 118) and supply side to exemplary slide 100.By this method, based on the defeated of exemplary slide 100
The input pressure for entering the supply pressure on side generates input power on spool 102, and the input power is by the bias pressure on spool 102
It offsets.Bias force is generated by bias pressure, which is also based on confession supply pressure but in exemplary slide 100
It answers on side.Since input pressure and bias pressure are all based on supply pressure, thus generated input power and bias force each other in
Ratio.In this way, exemplary DVC1000 can handle the supply pressure (for example, between 20-150psi) of wide scope,
Pneumatic booster (if using relay) must be adjusted without operator or other staff and/or is changed in supply pressure
Tracking is kept when change or replaces multiple control springs (if using known slide valve).In such an example, bias force with
The relationship of the opereating specification of input power passes through the area (for example, when bias pressure is identical as supply pressure) that will apply bias force
Size be designed as be less than apply input pressure face and/or by the way that slide valve 100 is designed such as bias pressure to control being low
It is controlled in supply pressure.
Figure 11 is the close-up illustration of a part of slide valve 1100, is shown exemplary in exemplary sleeve 1104
The cross section of a part of spool 1102.Exemplary slide 1100 can correspond to the example for being shown in conjunction with and describing with Fig. 1-10
Property slide valve 100,600,800,900.In operation, the appearance of the crestal surface 1110 of the inner surface 1106 and spool 1102 of sleeve 1104
Face 1108 is connected.In the example illustrated by Figure 11, inner surface 1106 is shown to be slightly disengaged with outer surface 1108 to indicate
Gap between spool 1102 and sleeve 1104 keeps spool 1102 free to slide in sleeve 1104.
The performance and efficiency (for example, reduction of air consumption) of slide valve depend on the outer diameter and sleeve 1104 of spool 1102
Gap between internal diameter.In other words, lesser gap leads to less air or other fluids) consumption, thus reduces and realizes cunning
Energy needed for the appropriate operation of valve.In some instances, the radial clearance between spool 1102 and sleeve 1104 can be 5 μm
Or it is smaller.In other words, the difference between the internal diameter of sleeve 1104 and the outer diameter of crestal surface 1110 can be 10 μm or smaller.This
In the case where close tolerance, exist any pollutant (for example, solid particle) in the fluid for flowing through slide valve 1100 possibly into
Gap spacing simultaneously causes spool 1102 to block or be unable to the risk of normal operating.Additionally or alternatively, from external environment
Pollutant may cause spool 1102 and/or sleeve 1104 corrodes, so as to cause the ultimate failure of slide valve 1100.Although can exert
Power reduces the pollutant being introduced into the flow media in spool 1102, but does not guarantee that mechanism in all cases can work
Make, allows to take steps to reduce the influence and/or generation of corrosion.
It is sliding other than the erosion (corrosion) for causing spool 1102 to be stuck in sleeve 1104 or other pollutants
Tighter tolerances in valve can cause the wear problem between spool 1102 and sleeve 1104 because they during operation relative to
It slides over each other.This relative motion may cause on spool 1102 and/or sleeve 1104 abrasion and/or it is other types of
Abrasion.In order to reduce the influence of corrosion and abrasion, need to manufacture slide valve with harder material to provide wearability, while also resistance to
Corrosion.Partially due to cost consideration, the material of the most common type for slide valve manufacture is steel alloy.However, specific steel alloy
Selection be usually directed to the compromise between hardness (wearability) and corrosion resistance.In other words, relatively hard for certain applications
Steel alloy may have insufficient corrosion resistance, and corrosion resisting alloy may have unacceptable wearability.
According to introduction disclosed herein, spool 1102 and sleeve 1104 are made of resistant material.In the example of illustration,
Spool 1102 and sleeve 1104 are all made of identical material.Spool 1102 and sleeve 1104 all use identical material, with reality
Now it is directed to the close clearance tolerance of effective spool.For example, if each of spool 1102 and sleeve 1104 be not all using
With material, then the thermal dilation difference of different materials may cause space change, thus reduce slide valve 1100 efficiency and/or
Spool 1102 is caused to be stuck in sleeve 1104 (for example, by making the bigger expansion of spool 1102 that gap is reduced to zero).To the greatest extent
Different materials can be used in pipe, but in some instances, for each of spool 1102 and sleeve 1104, these
Example may need to realize with bigger gap, to allow the different expansions of each component.For spool 1102 and sleeve
Both 1104 material can be selected based on the concrete application that will implement slide valve 1100.For example, slide valve 1100 can be used for
Slide valve 1100 is likely to be exposed in the offshore applications of salt water.In some such examples, spool 1102 and sleeve 1104 by
The austenitic stainless steel of excellent corrosion resistance is provided for salt water (for example, SAE (American Society of Automotive Engineers) 316 is stainless
Steel) it is made.
Although austenitic stainless steel provides relatively high level corrosion resistance, austenitic stainless steel has relatively poor
Antiwear characteristic.When spool 1102 and sleeve 1104 are all made of austenitic stainless steel, the abrasion of austenitic stainless steel is anti-
It is particularly problematic when moving again.Therefore, in some instances, as shown in figure 11, coating 1112 is applied to spool 1102 to create
Building prevents directly contacting between the austenite stainless steel surface of spool 1102 and the austenite stainless steel surface of sleeve 1104
Thus barrier layer reduce the abrasion of slide valve 1100 significantly.
In some instances, coating 1112 is obtained by harder than following substrate (for example, austenitic stainless steel of spool 1102)
More materials is made to increase wearability.Although wearability is the main purpose of coating 1112, because following substrate offer is resistance to
Corrosivity, but in some instances, coating 1112 is made of the material for also providing relatively high level corrosion resistance.More specifically
Ground, in some instances, coating 1112 are made of diamond-like-carbon (DLC) or other hard carbon materials.Institute in example as illustrated
Show, coating 1112 is applied on whole or substantially all of surfaces of spool 1102.In such an example, coating
1112 comprising microdefect be possible.The microdefect of even now has little effect the wearability of coating 1112, but applies
Microdefect presence in layer 1112 may provide the risk that pollutant contacts the path of following substrate (for example, spool 1102).
For this reason, in the example of illustration, the material of substrate below is selected as corrosion resistant.Based on the fact that, apply
Layer 1112 is not necessarily required to the whole surface of covering spool 1102.In some instances, coating 1112 can be limited to spool
1102 region with 1104 mechanical splice of sleeve.In other words, in some instances, coating is applied to the appearance of crestal surface 1110
Face 1108, and the region being spaced apart with crestal surface 1110 does not have the covering of coated 1112.In some instances, coating 1112 is applied
To sleeve 1104 rather than spool 1102.In other examples, coating 1112 can be applied to spool 1102 and sleeve 1104
The two.
When prefabricated components do not have coating 1112, DLC coating can be formed to have relatively thin (for example, 1 μm or more
It is small) thickness 1114, thickness 1114 can be less than gap spacing 1116 between spool 1102 and sleeve 1104.Therefore, one
In a little examples, coating 1112 can be applied to the slide valve of pre-existing slide valve and/or coming of new, be used for spool without changing
1102 and/or sleeve 1104 existing process.In some instances, prefabricated spool 1102 is subsequently processed to reduce outside it
Diameter and increase the gap spacing between spool 1102 and corresponding pre-made sleeve 1104 as with relatively large thickness 1114
1112 vacating space of coating, while realizing the typical tolerances with pre-existing sleeve 1104.In other examples, coating
1112 can be applied to pre-existing spool 1102 with any desired thickness, and sleeve 1104 is then processed into cooperation and is being applied
Cover the size around spool 1102 (there is desired tolerance clearance).If coating 1112 be applied on sleeve 1104 and/or
In 1104 the two of spool 1102 and sleeve, then similar process can be implemented.Coating 1112 can be any suitable thickness
(for example, 1 μm, 2 μm, 3 μm, 10 μm, 100 μm etc.).
Figure 12 is the flow chart for indicating the illustrative methods of slide valve 100 of manufacture Figure 11.Illustrative methods are by for slide valve
1100 processing sleeves 1104 start from frame 1202.Frame 1204 includes the spool 1102 that processing is slidably fit into sleeve.?
In some examples, spool 1102 and sleeve 1104 can be machined into acceptable gap tolerances, in no coating 1112
In the case of operate.In other words, in some instances, spool 1102 and sleeve 1104 can correspond to using not considering comprising coating
The prefabricated slide valve of 1102 particular process process manufacture.In some instances, spool 1102 and/or sleeve 1106 be processed with
Relatively wide gap spacing 1116 is provided, to allow thicker coating 1112.The exemplary frame 1206 illustrated includes will be wear-resisting
Coating 1112 is applied to spool 1102.In frame 1208, which includes that sleeve 1104 is processed into desired tolerance
Size of the interior cooperation around the spool 1102 for adding coating.
Although describing the illustrative methods of manufacture slide valve 1100 referring to the flow chart illustrated in Figure 12, can replace
Generation ground uses many other manufacturing methods.For example, the execution sequence of frame can be changed, and/or described some frames can
To be changed, eliminate or combine.For example, in some instances, being less than spool 1102 and set when coating 1112 is applied to have
When the thickness of the gap spacing 1116 between cylinder 1104, it is convenient to omit frame 1208.In addition, in some instances, coating 1112 can
To be applied to sleeve 1104 rather than spool 1102 (frame 1206).In other examples, coating 1112 can be applied to line
Both axis 1102 and casing 1104.In the example that coating 1112 is applied to casing 1104, spool 1102 can be processed to
Cooperate in the size being coated in casing.
Although certain illustrative methods, device and manufacture article, the coverage area of this patent have been disclosed herein
It is without being limited thereto.On the contrary, this patent covers all method, apparatus and manufacture object fallen completely within the scope of patent claims
Product.
Claims (16)
1. a kind of slide valve, comprising:
Sleeve；
It will be positioned in the spool in the sleeve, the sleeve and the spool are made of resistant material；With
It is applied to the wear-resistant coating of at least one of the spool or the sleeve.
2. slide valve according to claim 1, wherein the resistant material is austenitic stainless steel.
3. slide valve according to claim 1, wherein the coating is diamond like carbon coating.
4. slide valve according to claim 1, wherein the wear-resistant coating has about 1 μm of thickness.
5. slide valve according to claim 1, wherein the wear-resistant coating, which has, to be less than between the spool and the sleeve
Radial clearance thickness.
6. slide valve according to claim 1, wherein the spool and the sleeve are prefabricated, the outer diameters of prefabricated spool
It will be processed to increase the spacing between the spool and the sleeve before the coating is applied to the spool.
7. slide valve according to claim 1, wherein described after the coating is applied to the outer diameter of the spool
The internal diameter of sleeve will be processed to required size.
8. slide valve according to claim 1, wherein the coating is applied to the outer surface of the crestal surface on the spool.
9. slide valve according to claim 8, wherein the coating be not applied to the spool on the spool
Crestal surface region spaced apart.
10. slide valve according to claim 1, wherein the slide valve is realized in Digital Valve Controller.
11. a kind of Digital Valve Controller, comprising:
Shell；With
The intracorporal slide valve of shell, the slide valve include the spool that can be moved in sleeve, and wear-resistant coating is applied to the line
On at least one of axis or the sleeve, to create barrier layer between directly the contacting of the spool and the sleeve.
12. Digital Valve Controller according to claim 11, wherein the sleeve and the spool are by austenitic stainless steel
It is made.
13. Digital Valve Controller according to claim 11, wherein the coating is diamond like carbon coating.
14. Digital Valve Controller according to claim 11, wherein the wear-resistant coating, which has, is less than the spool and institute
State the thickness of the radial clearance between sleeve.
15. Digital Valve Controller according to claim 11, wherein the coating is applied to the crestal surface on the spool
Outer surface.
16. Digital Valve Controller according to claim 15, wherein the part of the spool being spaced apart with the crestal surface
It is not covered by the coating.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/421,238 US20170138489A1 (en) | 2013-11-08 | 2017-01-31 | Hard coated supply biased spool valves |
| US15/421,238 | 2017-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208503125U true CN208503125U (en) | 2019-02-15 |
Family
ID=61054569
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820171676.0U Active CN208503125U (en) | 2017-01-31 | 2018-01-31 | Slide valve and Digital Valve Controller |
| CN201810095090.5A Pending CN108457922A (en) | 2017-01-31 | 2018-01-31 | Hard conating supplies offset spool valve |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810095090.5A Pending CN108457922A (en) | 2017-01-31 | 2018-01-31 | Hard conating supplies offset spool valve |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3577375A1 (en) |
| CN (2) | CN208503125U (en) |
| CA (1) | CA3051359A1 (en) |
| RU (1) | RU2019124978A (en) |
| WO (1) | WO2018144197A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457922A (en) * | 2017-01-31 | 2018-08-28 | 费希尔控制产品国际有限公司 | Hard conating supplies offset spool valve |
| WO2021166969A1 (en) * | 2020-02-19 | 2021-08-26 | イーグル工業株式会社 | Spool valve |
| US11913559B2 (en) | 2019-09-24 | 2024-02-27 | Eagle Industry Co., Ltd. | Spool valve |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5222521A (en) * | 1992-05-08 | 1993-06-29 | Moog Controls, Inc. | Hydraulic valve |
| EP0870958A1 (en) * | 1997-04-08 | 1998-10-14 | Wärtsilä NSD Schweiz AG | Solenoid valve for hydraulic fluids |
| DE19815989A1 (en) * | 1998-04-09 | 1999-10-21 | Uti Holding & Man Ag | Piston-cylinder assembly e.g. for an ic engine |
| DE10128055C2 (en) * | 2001-06-01 | 2003-09-25 | Sgl Carbon Ag | Slide pairing for machine parts exposed to water vapor at high pressure and temperature levels, preferably for piston-cylinder arrangements of steam engines |
| JP2007139074A (en) * | 2005-11-18 | 2007-06-07 | Sumitomo Metal Mining Co Ltd | Air pulse generating device |
| US20150014569A1 (en) * | 2013-07-10 | 2015-01-15 | Hamilton Sundstrand Corporation | Coating arrangement for sliding actuator assembly and method |
| US9625043B2 (en) * | 2013-11-08 | 2017-04-18 | Fisher Controls International Llc | Apparatus to bias spool valves using supply pressure |
| WO2018144197A1 (en) * | 2017-01-31 | 2018-08-09 | Fisher Controls International Llc | Hard coated supply biased spool valves |
-
2018
- 2018-01-10 WO PCT/US2018/013061 patent/WO2018144197A1/en unknown
- 2018-01-10 EP EP18701886.6A patent/EP3577375A1/en not_active Withdrawn
- 2018-01-10 RU RU2019124978A patent/RU2019124978A/en not_active Application Discontinuation
- 2018-01-10 CA CA3051359A patent/CA3051359A1/en not_active Abandoned
- 2018-01-31 CN CN201820171676.0U patent/CN208503125U/en active Active
- 2018-01-31 CN CN201810095090.5A patent/CN108457922A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457922A (en) * | 2017-01-31 | 2018-08-28 | 费希尔控制产品国际有限公司 | Hard conating supplies offset spool valve |
| US11913559B2 (en) | 2019-09-24 | 2024-02-27 | Eagle Industry Co., Ltd. | Spool valve |
| WO2021166969A1 (en) * | 2020-02-19 | 2021-08-26 | イーグル工業株式会社 | Spool valve |
| JP7427349B2 (en) | 2020-02-19 | 2024-02-05 | イーグル工業株式会社 | spool valve |
| US12055224B2 (en) | 2020-02-19 | 2024-08-06 | Eagle Industry Co., Ltd. | Spool valve |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3577375A1 (en) | 2019-12-11 |
| WO2018144197A1 (en) | 2018-08-09 |
| CA3051359A1 (en) | 2018-08-09 |
| CN108457922A (en) | 2018-08-28 |
| RU2019124978A3 (en) | 2021-05-17 |
| RU2019124978A (en) | 2021-03-02 |
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| GR01 | Patent grant |