CN203940038U - Solenoid directional control valve and valve auxiliary structure - Google Patents
Solenoid directional control valve and valve auxiliary structure Download PDFInfo
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- CN203940038U CN203940038U CN201420330526.1U CN201420330526U CN203940038U CN 203940038 U CN203940038 U CN 203940038U CN 201420330526 U CN201420330526 U CN 201420330526U CN 203940038 U CN203940038 U CN 203940038U
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- valve pocket
- spool
- solenoid directional
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- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 16
- 239000000945 filler Substances 0.000 claims description 14
- 230000000694 effects Effects 0.000 abstract description 9
- 239000007769 metal material Substances 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 238000007789 sealing Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
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- Magnetically Actuated Valves (AREA)
Abstract
The solenoid directional control valve that the application discloses a kind of valve auxiliary structure and applied this valve auxiliary structure, wherein, spool and valve pocket are made by special ceramic material, and adopt clearance seal between spool and valve pocket, and gap length can reach 0.001-0.008mm.This spy's ceramic material has excellent engineering properties, and 120 ℃ of following expansions are zero substantially, can guarantee the impact that the clearance seal effect of valve auxiliary structure is not expanded by spool.And the abrasion resistance of special ceramic material, life-span, hardness, density, the relatively existing metallic material of pressure withstanding degree have significantly and improve, not only can meet the technical requirements of normal pressure and sub-high pressure hydraulic system, but also can meet the technical requirements of the above hydraulic system of 63Mpa.
Description
Technical field
The application relates to a kind of solenoid directional control valve, especially relates to a kind of valve auxiliary structure of solenoid directional control valve.
Background technique
Solenoid directional control valve is the commercial plant by Electromagnetic Control, is for controlling the automation foundation components and parts of fluid, adjusts the direction of flowing medium in the industrial control system of being everlasting.Solenoid directional control valve is very important hydraulic control component, its effect is the relative working position in valve body by conversion valve core, make each hydraulic fluid port of valve body be communicated with or disconnect, thereby control commutation or the start and stop of hydraulic actuator (as hydraulic rod, oil hydraulic motor).Utilize the switching electricity of electromagnet and directly promote the connected state that spool carrys out control port, namely utilize electromagnetic attraction to handle the control valve of spool transposition direction.
Solenoid directional control valve divides guiding valve, rotary valve and ball valve, with sliding valve style solenoid directional control valve, uses the most general.As shown in Figure 1,1 li of the valve body of electromagnetic switch guiding valve is provided with airtight cavity, in the middle of cavity, is spool 2.Diverse location at valve body 1 has the outside hydraulic fluid port of connection, hydraulic fluid port is divided into oil inlet P, two actuator port A, B, oil return inlet T (or O), each hydraulic fluid port connects different pipelines, oil inlet P is for oil-feed, and actuator port A, B are communicated with executive component, and oil return inlet T is communicated with oil sump tank, for oil return, by spool 2 and valve body 1, form sliding pair, thereby spool 2 slips make oil inlet P be communicated with actuator port A or actuator port B, realize commutation.
As shown in Figure 1, now spool 2 mediates, and oil inlet P and actuator port A, B are all in off state, and oil inlet P is without oil-feed, and oil return inlet T is also without oil return, and A mouth and B mouth are without running of hydraulic power oil, and oil hydraulic cylinder is in state of equilibrium.As shown in Figure 2, spool 2 is moved to the left position shown in Fig. 2 under electromagnet effect, now oil inlet P is communicated with actuator port A, fluid enters hydraulic jack from oil inlet P through actuator port A, and actuator port B and oil inlet P are in off state, actuator port B and being communicated with valve pocket oil return inlet T, carries out oil return.In the time of need commutating to executive component, as shown in Figure 3, spool 2 moves right to position shown in Fig. 3 under electromagnet effect, now oil inlet P is communicated with actuator port B, fluid enters hydraulic jack from oil inlet P through actuator port B, and actuator port A and oil inlet P be in off state, actuator port A and being communicated with valve pocket oil return inlet T, carries out oil return.
But existing solenoid directional control valve adopts metal spool and valve body substantially, seriously limited field and the pressure range of solenoid directional control valve application, in the above hydraulic system of 63Mpa, to apply considerably lessly, effect is not good yet.Because the working pressure of system is larger, spool and valve body fit dimension and Sealing require higher, and when existing solenoid directional control valve uses in the above hydraulic system of 63Mpa, its spool, valve body performance have obvious decline, cannot meet the demands.
Specifically, because metallic material self has the performance of comparatively significantly expanding with heat and contract with cold, relatively low consistency and elasticity modulus, in retrofit, except a small amount of heating distortion, also can produce trace meter material residual stress because of its cold plasticity, this class stress can make metal workpiece size unstable, make metal more perishable and make can raise in it, lattice plays pendulum etc., so metal spool and valve body quality of fit are restricted, in the above hydraulic system of 63Mpa, metal spool and valve body are difficult to reach clearance seal permissible accuracy, therefore between existing metal spool and valve body, mainly by Sealing, seal, but in the above hydraulic system of 63Mpa, Sealing can not meet the requirement of this working pressure, sealing effect is bad.
Summary of the invention
The application provides a kind of novel solenoid directional control valve and valve auxiliary structure.
Based on above technical purpose, the application provides a kind of valve auxiliary structure for solenoid directional control valve, comprise spool, also comprise valve pocket, described valve pocket has valve pocket chamber, on the wall of described valve pocket chamber, offer valve pocket filler opening, at least one valve pocket actuator port and valve pocket return opening, described spool is loaded in valve pocket chamber, described spool and described valve pocket form sliding pair and clearance seal, to control the valve pocket actuator port of appointment, be communicated with valve pocket filler opening or valve pocket return opening, described valve pocket and spool all adopt special ceramic material to make, described gap sealed gap length is 0.001-0.008mm.
Based on above technical purpose, the application also provides a kind of solenoid directional control valve, comprise valve body, spool and electromagnet assembly, described valve body has valve body chamber, the internal chamber wall in described valve body chamber has valve body filler opening, at least one valve body actuator port and valve pocket return opening, also comprise valve pocket, described valve pocket is fixedly installed in valve body chamber, described valve pocket has valve pocket chamber, on the wall of described valve pocket chamber, offer valve pocket filler opening, at least one valve pocket actuator port and valve pocket return opening, described valve pocket actuator port is communicated with valve body actuator port, described valve pocket filler opening is communicated with valve body filler opening, described valve pocket return opening is communicated with valve body return opening, described spool is loaded in valve pocket chamber, described spool and described valve pocket form sliding pair and clearance seal, to control the valve pocket actuator port of appointment, be communicated with valve pocket filler opening or valve pocket return opening, described valve pocket and spool all adopt special ceramic material to make, described gap sealed gap length is 0.001-0.008mm.
As the further improvement of above valve auxiliary structure and solenoid directional control valve, described gap sealed gap length is 0.002-0.005mm.
As the further improvement of above valve auxiliary structure and solenoid directional control valve, described gap sealed gap length is 0.003-0.004mm.
As the further improvement of above valve auxiliary structure and solenoid directional control valve, at least one ring annular groove is set on the outer surface of described valve pocket.
The application's beneficial effect is:
The valve auxiliary structure that the application provides and having applied in the solenoid directional control valve of this valve auxiliary structure, spool and valve pocket are made by special ceramic material, and adopt clearance seal between spool and valve pocket, and gap length can reach 0.001-0.008mm.This spy's ceramic material has excellent engineering properties, and 120 ℃ of following expansions are zero substantially, can guarantee the impact that the clearance seal effect of valve auxiliary structure is not expanded by spool.And the abrasion resistance of special ceramic material, life-span, hardness, density, the relatively existing metallic material of pressure withstanding degree have significantly and improve, not only can meet the technical requirements of normal pressure and sub-high pressure hydraulic system, but also can meet the technical requirements of the above hydraulic system of 63Mpa.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of electromagnetic switch valve core under zero-bit state;
Fig. 2 is the structural representation that a kind of electromagnetic switch valve core A is communicated with P;
Fig. 3 is the structural representation that a kind of electromagnetic switch valve core B is communicated with P;
Fig. 4 is a kind of embodiment's of the application's solenoid directional control valve structural representation;
Fig. 5 is the schematic diagram of middle valve auxiliary structure embodiment illustrated in fig. 4;
Fig. 6 is the schematic diagram of middle valve core structure embodiment illustrated in fig. 4.
Embodiment
Below by embodiment, by reference to the accompanying drawings the present invention is described in further detail.The application can realize with multiple different form, is not limited to the described mode of execution of the present embodiment.The object that following embodiment is provided is to be convenient to the clearer thorough understanding of the application's disclosure.
For better understanding the application, existing to being explained as follows to give a definition:
The application is less than 35Mpa by working pressure in solenoid directional control valve hydraulic system and is defined as normal pressure, 35Mpa-63Mpa is (containing 35Mpa, containing 63Mpa) be defined as sub-high pressure, 63-100Mpa is (containing 63Mpa, containing 100Mpa) be defined as high pressure, 100Mpa-400Mpa (containing 100Mpa, not containing 400Mpa) is defined as to ultrahigh pressure, will more than 400Mpa (containing 400Mpa) be called super ultrahigh pressure.
Embodiment
The application provides a kind of solenoid directional control valve.
This solenoid directional control valve comprises valve body, valve pocket, spool and electromagnet assembly.
Wherein, valve pocket and spool form a kind of valve auxiliary structure.
As Figure 4-Figure 6, this valve auxiliary structure comprises valve pocket 22 and spool 23.
This valve pocket 22 has valve pocket chamber 221, offers valve pocket oil inlet P 1, two valve pocket actuator port A1, B1 (actuator port can be for more than one, and the present embodiment is two) and valve pocket oil return inlet T on 221 walls of valve pocket chamber.This spool 23 is loaded in valve pocket chamber 221.Spool 23 surface coordinates with the inner wall sealing in valve pocket chamber 221 and forms sliding pair, in sliding process, outer surface by spool 23 makes valve pocket oil inlet P 1 be communicated with the valve pocket actuator port of appointment, as valve pocket oil inlet P 1 is communicated with actuator port A1, actuator port B1 and valve pocket oil inlet P 1 disconnect, and actuator port B1 is communicated with valve pocket oil return inlet T; Or valve pocket oil inlet P 1 closes with actuator port B1 connected sum, actuator port A1 and 1 disconnection of valve pocket oil inlet P, and actuator port A1 is communicated with valve pocket oil return inlet T.
Please continue to refer to Fig. 4, valve body 1 has valve body chamber 21, and the internal chamber wall in valve body chamber 21 has valve body oil inlet P 2, valve body actuator port A2, B2 and valve body return opening (not shown).In valve auxiliary structure, valve pocket 22 is fixedly embedded in valve body chamber 21, and valve pocket oil inlet P 1 is communicated with valve body oil inlet P 2, and valve pocket actuator port A1 is communicated with valve body actuator port A2, and valve pocket actuator port B1 is communicated with valve body actuator port B2.
Electromagnet assembly comprises electromagnet 24, liftout mechanism 25 and joint 26 etc., this electromagnet 24 acts on spool 23 by liftout mechanism 25, make spool 23 in the interior slip in valve pocket chamber 221, be communicated with or close each hydraulic fluid port, thereby control commutation or the start and stop of hydraulic actuator (as hydraulic rod, oil hydraulic motor), utilize the switching electricity of electromagnet 24 and directly promote the connected state valve that spool 23 carrys out control port.Below just sketch the control procedure of this electromagnet assembly, in fact to control the Principle of Process of spool 23 identical with existing solenoid directional control valve for this electromagnet assembly, here with regard to superfluous words no longer.
For valve pocket 22, fixedly inlay to adopt with the internal chamber wall in valve body chamber 21 and be tightly fixed, specific operation are can be by valve body 1 and valve pocket 22 heating, at a certain temperature valve pocket 22 is embedded in the valve body chamber 21 of valve bodies 1, cooling the latter two realize drive fit mosaic structure.
In order to strengthen the fixing of valve pocket 22 and valve body, on the outer surface of valve pocket 22, at least one ring annular groove can be set.
In the present embodiment, valve pocket 22 and spool 23 all adopt special ceramic material (being called again special cermacis, fine ceramics) to make, and being sealed and matched of valve pocket 22 and spool 23 refers between spool 23 and valve pocket 22 to be clearance seal.
Wherein, gap sealed gap length can be 0.001-0.008mm, and wherein 0.001mm gap is applicable to the solenoid directional control valve below 200Mpa, and 0.008mm gap is applicable to the solenoid directional control valve below 50Mpa.
Or gap sealed gap length can be 0.002-0.005mm, and wherein 0.002mm gap is applicable to the solenoid directional control valve below 150Mpa, and 0.005mm gap is applicable to the solenoid directional control valve below 70Mpa.
Or gap sealed gap length can be 0.003-0.004mm, and wherein 0.003mm gap is applicable to the solenoid directional control valve below 120Mpa, and 0.004mm gap is applicable to the solenoid directional control valve below 100Mpa.
In the prior art, if joining, metal valve pair reached clearance seal, it all will be very high to lubricating condition and heat radiation requirement, therefore being sealed and matched of the made valve pair of metallic material all needs Sealing to seal conventionally, and this just brings the series of problems such as sealing effect quality, working life length, disassembling, assembling and replacing manufacture cost.
The present embodiment adopts special ceramic material to have excellent engineering properties, and 120 ℃ of following expansions are zero substantially, can guarantee the impact that the clearance seal effect of valve auxiliary structure is not expanded by spool 23.And the abrasion resistance of special ceramic material, life-span, hardness, density, the relatively existing metallic material of pressure withstanding degree have significantly and improve, can meet the technical requirements of normal pressure, sub-high pressure, high pressure, ultrahigh pressure and super Superhigh Pressure Hydraulic System.
Meanwhile, because special ceramic material has good self lubricity, it can be applied to various flowing mediums, also because its good corrosion stability can be widely applied in the corrosive atmospheres such as acid-alkali salt, as fields such as ocean, chemical industry, oil.
And in the present embodiment, because valve is secondary, adopting clearance seal, sealing material that therefore completely can be other, directly utilizes the micro-gap between movement parts to seal.Because of need not any sealing material, so valve auxiliary structure is simply compact, size be little.And due to gapped existence between proportioning valve pair, so the frictional force of valve auxiliary structure is little, heating is few, the life-span is long.
And the secondary heatproof of valve that special ceramic material is made is very high, can in hot environment, use.
This spy's ceramic material has the lower performance of expanding with heat and contract with cold, higher consistency and elasticity modulus, thereby processing heat expansion is out of shape and cold plasticity is all less.So list can reach clearance seal permissible accuracy, also helps online cooperation detection and superfinishing size Control, can accomplish the wildcard of spool 23 and valve pocket 22.Prior art spool 23 and valve body are by being processed into grinding, therefore a spool 23 can only be joined a valve body, and the auxiliary structure of valve shown in the present embodiment, a spool 23 can be used in conjunction with any valve pocket 22, a valve pocket 22 also can be used in conjunction with any spool 23, be convenient to change component, be applicable to batch production.
The solenoid directional control valve that the relative existing metal valve pairs of performance index such as the commutation ability of the present embodiment solenoid directional control valve, the pressure loss, interior amount of leakage, commutation and resetting time, commutating frequency, working life are made has obvious lifting, can realize the normal use of high pressure, ultrahigh pressure and super Superhigh Pressure Hydraulic System more than 63Mpa completely.
Above content is in conjunction with concrete mode of execution further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace.
Claims (8)
1. the valve auxiliary structure for solenoid directional control valve, comprise spool, it is characterized in that, also comprise valve pocket, described valve pocket has valve pocket chamber, on the wall of described valve pocket chamber, offer valve pocket filler opening, at least one valve pocket actuator port and valve pocket return opening, described spool is loaded in valve pocket chamber, described spool and described valve pocket form sliding pair and clearance seal, to control the valve pocket actuator port of appointment, be communicated with valve pocket filler opening or valve pocket return opening, described valve pocket and spool all adopt special ceramic material to make, and described gap sealed gap length is 0.001-0.008mm.
2. valve auxiliary structure as claimed in claim 1, is characterized in that, described gap sealed gap length is 0.002-0.005mm.
3. valve auxiliary structure as claimed in claim 2, is characterized in that, described gap sealed gap length is 0.003-0.004mm.
4. valve auxiliary structure as claimed in claim 1, is characterized in that, at least one ring annular groove is set on the outer surface of described valve pocket.
5. a solenoid directional control valve, comprise valve body, spool and electromagnet assembly, described valve body has valve body chamber, the internal chamber wall in described valve body chamber has valve body filler opening, at least one valve body actuator port and valve pocket return opening, it is characterized in that, also comprise valve pocket, described valve pocket is fixedly installed in valve body chamber, described valve pocket has valve pocket chamber, on the wall of described valve pocket chamber, offer valve pocket filler opening, at least one valve pocket actuator port and valve pocket return opening, described valve pocket actuator port is communicated with valve body actuator port, described valve pocket filler opening is communicated with valve body filler opening, described valve pocket return opening is communicated with valve body return opening, described spool is loaded in valve pocket chamber, described spool and described valve pocket form sliding pair and clearance seal, to control the valve pocket actuator port of appointment, be communicated with valve pocket filler opening or valve pocket return opening, described valve pocket and spool all adopt special ceramic material to make, described gap sealed gap length is 0.001-0.008mm.
6. solenoid directional control valve as claimed in claim 5, is characterized in that, described gap sealed gap length is 0.002-0.005mm.
7. solenoid directional control valve as claimed in claim 6, is characterized in that, described gap sealed gap length is 0.003-0.004mm.
8. solenoid directional control valve as claimed in claim 5, is characterized in that, at least one ring annular groove is set on the outer surface of described valve pocket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420330526.1U CN203940038U (en) | 2014-06-19 | 2014-06-19 | Solenoid directional control valve and valve auxiliary structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420330526.1U CN203940038U (en) | 2014-06-19 | 2014-06-19 | Solenoid directional control valve and valve auxiliary structure |
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| Publication Number | Publication Date |
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| CN203940038U true CN203940038U (en) | 2014-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420330526.1U Expired - Lifetime CN203940038U (en) | 2014-06-19 | 2014-06-19 | Solenoid directional control valve and valve auxiliary structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017008250A1 (en) * | 2015-07-14 | 2017-01-19 | 广东华液动力科技有限公司 | Method for manufacturing special ceramic, valve pair structure and piston pair |
| CN109751178A (en) * | 2018-01-22 | 2019-05-14 | 天津市元远合成科技发展有限公司 | Turbine mechanical governor critical component cooperates precision processing technology |
-
2014
- 2014-06-19 CN CN201420330526.1U patent/CN203940038U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017008250A1 (en) * | 2015-07-14 | 2017-01-19 | 广东华液动力科技有限公司 | Method for manufacturing special ceramic, valve pair structure and piston pair |
| CN109751178A (en) * | 2018-01-22 | 2019-05-14 | 天津市元远合成科技发展有限公司 | Turbine mechanical governor critical component cooperates precision processing technology |
| CN109751178B (en) * | 2018-01-22 | 2021-06-18 | 天津市元远合成科技发展有限公司 | Machining process for matching precision of key components of mechanical speed regulator of water turbine |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141112 |