CN102797901B - Bidirectional small low-leakage high-pressure electromagnetic directional valve - Google Patents
Bidirectional small low-leakage high-pressure electromagnetic directional valve Download PDFInfo
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- CN102797901B CN102797901B CN201210310560.8A CN201210310560A CN102797901B CN 102797901 B CN102797901 B CN 102797901B CN 201210310560 A CN201210310560 A CN 201210310560A CN 102797901 B CN102797901 B CN 102797901B
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Abstract
The invention discloses a bidirectional small low-leakage high-pressure electromagnetic directional valve. The small high-pressure electromagnetic valve adopts a pilot type structure, wherein a pilot grade adopts a cone valve structure; a main valve grade adopts a nonmetal flexible-seal slide valve structure; and check valve damping assemblies are used for automatically completing the switching of a pressure source of a containing cavity of a main valve core so as to realize the bidirectional flow of high-pressure mediums. The bidirectional small low-leakage high-pressure electromagnetic directional valve has the beneficial effects that by adopting a pilot type insertion structure, the valve can be applied to occasions with high pressure, large flow and small spaces; two work oil ports H and P are respectively connected with a lower cavity of the main valve core through the two check valve damping assemblies, and the balance pressure of a main valve comes from the work oil port with larger pressure, so that the bidirectional flow of the mediums can be realized; and the valve can avoid leakage basically, and is small in abrasion and long in service life.
Description
Technical field
The present invention relates to a kind of high-pressure solenoid valve, especially pressure reaches 40MPa, MEDIA FLOW to being two-way small volume solenoid directional control valve.
Background technique
Along with scientific and technical development, the pressure of hydraulic pressure and pneumatic system is more and more higher, simultaneously automaticity is also more and more higher, and the high-pressure air of usining is applied because of characteristics such as its exclusive specific power is high, instantaneous expansion is large, explosive force is strong, temperature wide accommodations as the high-pressure pneumatic system of working medium in the fields such as space flight and aviation, naval vessel, high-pressure air source car, engineering machinery.At Aeronautics and Astronautics and some special dimensions, along with scientific and technical development, the application of new material, new process, the working pressure of high-pressure air source system improves constantly, and the working pressure of some high-pressure air source systems has reached 70MPa.The ballast tank of naval vessel submersible blows down, compression chamber boosts, diver breathes inflating gas cylinder and flushing of pipeline etc. all needs high-pressure air, along with the development of naval vessel compressed air technique, starts to apply 40MPa high pressure air system on naval vessel.High-pressure air source car is as a kind of new-energy automobile, and its bleed pressure has also reached 30MPa.Engineering machinery is as hydraulic shovel, hoist, hydraulic concrete pump truck etc., and the pressure of its hydraulic system has developed into 30-40MPa.Solenoid valve is as hydraulic pressure and the conventional control unit of pneumatic system, its performance requirement is more and more higher, according to the requirement of above-mentioned service condition, above-mentioned Advanced Equipment development, the high-pressure solenoid valve that needs a kind of 30-40MPa, simultaneously due to the restriction of space and power source, need to this solenoid valve possess the specific functions such as small volume, the little leakage quantity that leaks, vibration adaptation are strong; In some special occasions, need to realize the two-way flow of driving medium.
Owing to being subject to the restriction of the difficult problems such as driving medium physical property, high pressure sealing, driving mechanism, manufacturing process, rarely has in the market high pressure small volume solenoid valve.The product of selling in the market at volume, leakage rate, MEDIA FLOW to the usage requirement that does not all reach above-mentioned field aspect, resistance to environment.Solenoid valve product in the market, is upwards divided into unidirectional and two-way two kinds in MEDIA FLOW, and wherein Unidirectional solenoid valve is cone valve or ball-valve structure, and its sealing is better, leaks littlely, but due to its structural limitations, its MEDIA FLOW is to can only be unidirectional; Bidirectional electromagnetic valve is sliding valve structure, and such solenoid valve can be realized by the how logical structure of multidigit the two-way flow of medium, but because the opinion of spool valve opening must exist certain gap (guaranteeing the smooth movement of spool), its sealability is poor, leaks large.In sum, currently marketed solenoid valve exists that following some is not enough: 1, electromagnetic switch cone valve, can only realize the one-way flow of medium; 2, electromagnetic switch guiding valve, sealability is poor, leaks large; 3, current solenoid valve volume compared with large, pressure rating is little, in the application in high pressure and little space, be very restricted.
Summary of the invention
The object of the invention is in order to solve existing solenoid valve because MEDIA FLOW is to the problem such as, volume, leakage rate be larger, a kind of two-way, small volume, low leakage high-voltage electromagnetic selector valve are provided.
The object of the invention is to realize in the following way: a kind of two-way, small volume, low leakage high-voltage electromagnetic selector valve, in the upper end of electromagnet housing, have manual voltage regulation bolt hole, in the lower end of electromagnet housing, there is electromagnet housing mounting bracket, at manual voltage regulation bolt hole, there is manual voltage regulation bolt, electromagnetic coil is contained in electromagnet housing by coil mounting bracket, electromagnetic coil is with plastic packaging glue plastic packaging in electromagnet housing, and solenoid actuated contact pin is connected on electromagnetic coil; Armature sleeve is housed in electromagnetic coil, and armature is contained in armature sleeve; The upper and lower two ends of manual voltage regulation spring are connected with armature upper end with manual voltage regulation bolt respectively; Main valve seat is connected with electromagnet housing, between the upper end of main valve seat and coil mounting bracket, has adjustment packing ring, at main valve seat sidewall, has return opening O mouth, has actuator port H mouth and actuator port P mouth in main valve seat lower end; In main valve seat, there is guide valve seat, at guide valve seat sidewall, have spill port, in guide valve seat bottom side, have valve seat orifice; In guide valve seat, there is pilot valve spool, between pilot valve spool and guide valve seat sidewall, be provided with pilot valve spool location glued membrane, armature power transmission spring upper end withstands on the lower end of armature, and armature power transmission spring lower end is pressed on pilot valve spool, is provided with pilot valve spool return spring between the lower end of pilot valve spool and guide valve seat; Below pilot valve spool, there is main valve plug, main valve plug can move freely between pilot valve seat and main valve seat, on main valve plug, have P mouth intercommunicating pore and H mouth intercommunicating pore, at P mouth intercommunicating pore and H mouth intercommunicating pore, one-way valve damping assembly is housed, P mouth intercommunicating pore is communicated with actuator port P mouth, and H mouth intercommunicating pore is communicated with actuator port H mouth.
One-way valve damping assembly comprises unidirectional cone valve valve seat, and unidirectional cone valve and unidirectional cone valve Returnning spring have unidirectional cone valve damping hole on unidirectional cone valve; Unidirectional cone valve diameter is 3mm, and unidirectional cone valve damping hole diameter is 0.5mm.
The valve seat orifice diameter of guide valve seat bottom side is 1.2mm and matches with the pilot valve spool of taper.
Between valve core of main valve and main valve seat, anchor ring adopts the sealing of valve core of main valve O RunddichtringO.
Between the plastic packaging glue of coil mounting bracket and electromagnet housing, anchor ring adopts the sealing of coil mounting bracket O RunddichtringO.
Between the plastic packaging glue upper end of electromagnetic coil and electromagnet housing, surface of contact adopts the sealing of electromagnetic coil O RunddichtringO.
This solenoid valve adopts the plug-in type structure of high integration, and between main valve plug and main valve seat, end face adopts nonmetal software seal ring sealing, and anchor ring adopts the sealing of O RunddichtringO, to guarantee the sealability of main valve guiding valve.Two one-way valve damping assemblies are the assemblying body of the unidirectional cone valve of latus rectum 3mm and the damping hole of latus rectum 0.5mm; It is that the aperture of 1.2mm and the pilot valve spool of taper match that pilot valve seat has diameter, and while having guaranteed like this pilot valve sealing, main valve epicoele is high-pressure sealed cavity volume, and main valve is in closed condition; When pilot valve is opened, the pressure of main valve epicoele is zero, main valve below under high-pressure medium effect in open mode.
The invention has the beneficial effects as follows: 1, adopt leading type plug-in mounting structure, can be applied to the occasion in high pressure, large flow, little space; 2, two actuator port H mouths are connected with main valve plug cavity of resorption by two one-way valve damping assemblies respectively with P mouth, and main valve balance pressure, from the larger actuator port of pressure, can be realized the two-way flow of medium; 3, essentially no leakage, has wearing and tearing less, manually protection, small volume, low leakage, the feature of long service life.
accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is one-way valve damping assembly structure schematic diagram;
embodiment
Embodiment
A kind of two-way, small volume, low leakage high-voltage electromagnetic selector valve, in the upper end of electromagnet housing 11, have manual voltage regulation bolt hole 13, in the lower end of electromagnet housing 11, there is electromagnet housing mounting bracket 6, at manual voltage regulation bolt hole 13, there is manual voltage regulation bolt 12, electromagnetic coil 15 is contained in electromagnet housing 11 by coil mounting bracket 19, electromagnetic coil 15 use plastic packaging glue 7 plastic packagings are in electromagnet housing 11, and solenoid actuated contact pin 9 is connected on electromagnetic coil 15; Armature sleeve 8 is housed in electromagnetic coil 15, and armature 16 is contained in armature sleeve 8; Manual voltage regulation spring is connected with armature 16 upper ends with manual voltage regulation bolt 12 respectively at two ends Shang Xia 10; Main valve seat 24 is connected with electromagnet housing 11, has the packing ring 20 of adjustment between the upper end of main valve seat 24 and coil mounting bracket 19, at main valve seat 24 sidewalls, has return opening O mouth 5, has actuator port H mouth 27 and actuator port P mouth 28 in main valve seat 24 lower ends; In main valve seat 24, there is guide valve seat 4, at guide valve seat 4 sidewalls, have spill port 29, in guide valve seat 4 bottom sides, have valve seat orifice 33; In guide valve seat 4, there is pilot valve spool 23, between pilot valve spool 23 and guide valve seat 4 sidewalls, be provided with pilot valve spool location glued membrane 21, armature power transmission spring 17 upper ends withstand on the lower end of armature 16, armature power transmission spring 17 lower ends are pressed on pilot valve spool 23, are provided with pilot valve spool return spring 22 between the lower end of pilot valve spool 23 and guide valve seat 4; Below pilot valve spool 23, there is main valve plug 25, main valve plug 25 can move freely between pilot valve seat 4 and main valve seat 24, on main valve plug 25, have P mouth intercommunicating pore 34 and H mouth intercommunicating pore 26, at P mouth intercommunicating pore 34 and H mouth intercommunicating pore 26, one-way valve damping assembly 1 is housed, P mouth intercommunicating pore 34 is communicated with actuator port P mouth 28, and H mouth intercommunicating pore 26 is communicated with actuator port H mouth 27; One-way valve damping assembly 1 comprises unidirectional cone valve valve seat 29, and unidirectional cone valve 31 and unidirectional cone valve Returnning spring 32 have unidirectional cone valve damping hole 30 on unidirectional cone valve 31; Unidirectional cone valve 31 diameters are 3mm, and unidirectional cone valve damping hole 30 diameters are 0.5mm; Valve seat orifice 33 diameters of guide valve seat 4 bottom sides are 1.2mm and match with the pilot valve spool 23 of taper; Between valve core of main valve 25 and main valve seat 24, anchor ring adopts 2 sealings of valve core of main valve O RunddichtringO; Between the plastic packaging glue 7 of coil mounting bracket 19 and electromagnet housing 11, anchor ring adopts 18 sealings of coil mounting bracket O RunddichtringO; Between plastic packaging glue 7 upper ends of electromagnetic coil 15 and electromagnet housing 11, surface of contact adopts 14 sealings of electromagnetic coil O RunddichtringO.
For realize high-pressure solenoid valve in MEDIA FLOW to (two-way flow), volume, the leakage quantity that leaks, the new demand of resistance to environment aspect, has proposed novelty integrated electromagnetic valve arrangement as shown in Figure 1.This minitype high voltage solenoid valve adopts leading type structure, and pilot stage adopts cone valve structure, and main valve level adopts the sliding valve structure of nonmetal soft seal, adopts one-way valve damping assembly automatically to complete main valve plug cavity volume pressure source and switches, and realizes the two-way flow of high-pressure medium.Whole solenoid valve mainly by strong suction electromagnet, pilot valve and main valve totally 3 parts form, its specific works principle is as follows:
When electromagnetic coil 15 no electric circuit, position as shown in Figure 1, pilot valve spool 23 under the effect of manual voltage regulation spring 10 and armature power transmission spring 17 in closed condition, now the high-pressure medium of actuator port P mouth 28 enters the epicoele of valve core of main valve 25 by P mouth intercommunicating pore 34 one-way valve damping assemblies 1, the epicoele of main valve plug 25 is now a closed containing cavity (H mouth intercommunicating pore 26 one-way valve damping assembly 1 unidirectional cutoffs), form high pressure, the atmospheric pressure of main valve plug 25 epicoeles is greater than the atmospheric pressure of its below sealing edge of a knife outer ring face, main valve plug 25 is pressed on main valve seat 24, solenoid valve is in cut-off state.
When electromagnetic coil 15 energising, armature 16 is under the effect of electromagnetic attraction, the preload pressure that overcomes manual voltage regulation spring 10 moves upward, pilot valve spool 23 under the effect of pilot valve spool return spring 22 and atmospheric pressure in opening state, although now the high-pressure medium of actuator port P mouth 28 enters the epicoele of main valve plug 25 by P mouth intercommunicating pore 34 one-way valve damping assemblies 1, but due to the flow area (thin wall small hole of Ψ 1.2mm) of the pilot valve flow area (thin wall small hole of Ψ 0.5mm) much larger than one-way valve damping assembly 1 in P mouth intercommunicating pore 34, the pressure of main valve plug 25 epicoeles decays to zero very soon, valve core of main valve 25 below seal under the effect of edge of a knife outer ring face atmospheric pressure and move upward, valve core of main valve 25 is opened, solenoid valve is in open mode.
The realization that two-way airflow flows to: as shown in Figure 1, effect due to one-way valve damping assembly 1 in one-way valve damping assembly 1 in P mouth intercommunicating pore 34 and H mouth intercommunicating pore 26, the air pressure that enters main valve plug 25 epicoeles is chosen as elevated pressures one side between actuator port P mouth 28 and actuator port H mouth 27 automatically, no matter which side is high voltage terminal, as long as electromagnetic valve coil 15 no electric circuits, valve core of main valve 25 all can be under the effect of atmospheric pressure remain off, but as long as electromagnetic valve coil 15 energisings, the pressure of main valve plug 25 epicoeles will decay to 0, valve core of main valve 25 will be opened, thereby actuator port P mouth 28 and actuator port H mouth 27, medium will flow to low voltage terminal from high voltage terminal, realizing two-way airflow flows to.
Manual-operated emergent protective function is realized: when needs are met an urgent need exhaust; can hang the moving regulator bolts 12 of loosing one's grip; until the pretightening force of manual voltage regulation spring 10 is adjusted to 0; now pilot valve spool 23 under the effect of pilot valve spool return spring 22 and atmospheric pressure in opening state; main valve plug 25 is opened, and realizes emergent degassing function.
Claims (6)
1. two-way a, small volume, low leakage high-voltage electromagnetic selector valve, it is characterized in that: in the upper end of electromagnet housing (11), have manual voltage regulation bolt hole (13), in the lower end of electromagnet housing (11), there is electromagnet housing mounting bracket (6), at manual voltage regulation bolt hole (13), there is manual voltage regulation bolt (12), electromagnetic coil (15) is contained in electromagnet housing (11) by coil mounting bracket (19), electromagnetic coil (15) is with plastic packaging glue (7) plastic packaging in electromagnet housing (11), and solenoid actuated contact pin (9) is connected on electromagnetic coil (15); Armature sleeve (8) is housed in electromagnetic coil (15), and armature (16) is contained in armature sleeve (8); The upper and lower two ends of manual voltage regulation spring (10) are connected with armature (16) upper end with manual voltage regulation bolt (12) respectively; Main valve seat (24) is connected with electromagnet housing (11), between the upper end of main valve seat (24) and coil mounting bracket (19), there is adjustment packing ring (20), at main valve seat (24) sidewall, have return opening O mouth (5), in main valve seat (24) lower end, have actuator port H mouth (27) and actuator port P mouth (28); In main valve seat (24), there is guide valve seat (4), at guide valve seat (4) sidewall, have spill port (29), in guide valve seat (4) bottom side, have valve seat orifice (33); In guide valve seat (4), there is pilot valve spool (23), between pilot valve spool (23) and guide valve seat (4) sidewall, be provided with pilot valve spool location glued membrane (21), armature power transmission spring (17) upper end withstands on the lower end of armature (16), it is upper that armature power transmission spring (17) lower end is pressed in pilot valve spool (23), between the lower end of pilot valve spool (23) and guide valve seat (4), is provided with pilot valve spool return spring (22); In the below of pilot valve spool (23), there is main valve plug (25), main valve plug (25) can move freely between pilot valve seat (4) and main valve seat (24), on valve core of main valve (25), have P mouth intercommunicating pore (34) and H mouth intercommunicating pore (26), at P mouth intercommunicating pore (34) and H mouth intercommunicating pore (26), one-way valve damping assembly (1) is housed, P mouth intercommunicating pore (34) is communicated with actuator port P mouth (28), and H mouth intercommunicating pore (26) is communicated with actuator port H mouth (27).
2. a kind of two-way, small volume according to claim 1, low leakage high-voltage electromagnetic selector valve, it is characterized in that: one-way valve damping assembly (1) comprises unidirectional cone valve valve seat (29), unidirectional cone valve (31) and unidirectional cone valve Returnning spring (32) have unidirectional cone valve damping hole (30) on unidirectional cone valve (31); Unidirectional cone valve (31) diameter is 3mm, and unidirectional cone valve damping hole (30) diameter is 0.5mm.
3. a kind of two-way, small volume according to claim 1, low leakage high-voltage electromagnetic selector valve, is characterized in that: valve seat orifice (33) diameter of guide valve seat (4) bottom side is 1.2mm and matches with the pilot valve spool (23) of taper.
4. a kind of two-way, small volume according to claim 1, low leakage high-voltage electromagnetic selector valve, is characterized in that: between main valve plug (25) and main valve seat (24), anchor ring adopts valve core of main valve O RunddichtringO (2) sealing.
5. a kind of two-way, small volume according to claim 1, low leakage high-voltage electromagnetic selector valve, is characterized in that: between coil mounting bracket (19) and the plastic packaging glue (7) of electromagnet housing (11), anchor ring adopts coil mounting bracket O RunddichtringO (18) sealing.
6. a kind of two-way, small volume according to claim 1, low leakage high-voltage electromagnetic selector valve, is characterized in that: between plastic packaging glue (7) upper end of electromagnetic coil (15) and electromagnet housing (11), surface of contact adopts electromagnetic coil O RunddichtringO (14) sealing.
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| CN201210310560.8A CN102797901B (en) | 2012-08-27 | 2012-08-27 | Bidirectional small low-leakage high-pressure electromagnetic directional valve |
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| CN201210310560.8A CN102797901B (en) | 2012-08-27 | 2012-08-27 | Bidirectional small low-leakage high-pressure electromagnetic directional valve |
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| CN102797901B true CN102797901B (en) | 2014-01-29 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103016714A (en) * | 2012-12-11 | 2013-04-03 | 中国船舶重工集团公司第七〇五研究所 | Sealing piston mechanism applicable to realizing bidirectional flowing of high-pressure electromagnetic valve gas |
| CN108916457A (en) * | 2018-07-14 | 2018-11-30 | 东莞海特帕沃液压科技有限公司 | A kind of two-way shut-off valve of electromagnetism-hand-operated double controlled |
| CN109139591B (en) * | 2018-09-25 | 2020-03-10 | 中国农业大学 | Mountain and hill self-adaptation pilot-operated type electro-hydraulic proportional threaded cartridge valve |
| CN110374727A (en) * | 2019-09-03 | 2019-10-25 | 湖北农谷环保科技有限公司 | Urea injection system for diesel engine aftertreatment system |
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Effective date of registration: 20190121 Address after: 410000 F1 Building 301, Yuyuan, Lugu, 27 Wenxuan Road, Changsha High-tech Development Zone, Hunan Province Patentee after: Hunan Jinrun Electro-hydraulic Control System Co., Ltd. Address before: 411105 Yanggoutang, Xiangtan City, Hunan Province Patentee before: Xiangtan University |
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