CN202678020U - Pressure-resistance springless direct-acting high-speed switch electromagnet - Google Patents
Pressure-resistance springless direct-acting high-speed switch electromagnet Download PDFInfo
- Publication number
- CN202678020U CN202678020U CN2012202778199U CN201220277819U CN202678020U CN 202678020 U CN202678020 U CN 202678020U CN 2012202778199 U CN2012202778199 U CN 2012202778199U CN 201220277819 U CN201220277819 U CN 201220277819U CN 202678020 U CN202678020 U CN 202678020U
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- China
- Prior art keywords
- yoke
- sealing ring
- armature
- yoke iron
- speed switch
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Abstract
The utility model relates to a pressure-resistance springless direct-acting high-speed switch electromagnet, which comprises a front end cover, a rear end cover, a yoke iron component and an armature component, wherein the armature component comprises an armature and a push rod which is used for linking with a valve plug of a digital switch valve; the armature is fixedly arranged on the push rod; a first yoke iron, a second yoke iron and a third yoke iron are all arranged on the outer ring of the armature; the openings of the first yoke iron and the second yoke iron are opposite to form a cavity; a magnet ring is positioned in the cavity; a coil is surrounded on the magnet ring to form a current excitation source; a permanent magnet is positioned between the second yoke iron and the third yoke iron; two annular grooves for placing a first sealing ring and a sixth sealing ring are formed in the inner sides of the front end cover and the rear end cover respectively; two annular grooves for placing a fourth sealing ring and a fifth sealing ring are formed in sides where the second yoke iron and the third yoke iron are respectively connected with the permanent magnet respectively; and two annular grooves for placing a second sealing ring and a third sealing ring are formed on both sides of a coil holding frame respectively. The high-speed switch electromagnet provided by the utility model has a good pressure-resistance performance and is adaptive to operation in wet states.
Description
Technical field
The utility model belongs to the electromechanical switching mechanism that electricity (gas) liquid high speed valve is used in Fluid-transmission and the control field, relates in particular to a kind of high pressure resistant spring-free directly operated type high-speed switch electromagnet.
Background technology
Whether valve has fluid to enter can be divided into two kinds of dry type and wet types with electromechanical converter according to the armature working chamber, the latter compares with the former, can be immersed in the fluid when allowing armature work owing to its structural high pressure resistant property, thereby has good heat dissipation, rub little, commutation and when resetting impact noise little, therefore the advantage that stable working and life-span are long is used increasingly extensive.
Generally speaking, the control signal of pulse-width modulation type high speed valve is that a series of amplitudes equate and at the different pulse signal of each cycle insied width, its electromechanical converter mainly is high-speed switch electromagnet, electromagnet armature is in the extreme position adhesive during pulse high level, under the effect of mechanical spring power, reset during low level, with standard-sized sheet and two kinds of operating states of full cut-off of this corresponding high-speed switch valve.
For the high-speed switch electromagnet that requires rapidity, back-moving spring is one of critical component, and its rigidity has directly determined the natural frequency of return time and the electromagnet of armature; Yet spring in use inevitably fatigue, fracture and corrosion etc. can occur as machine components, thereby causes the integrity problem of electromagnet, affects the useful life of electromagnet, when serious even cause electromagnet to lose efficacy; In addition, when Electromagnetic Design, also need to consider installation method and the position of spring, thereby so that its internal structure is complicated, processing cost is high.For this reason, also have patent to propose the spring-free directly operated type high-speed switch electromagnet that resets by electromagnetic force, it is simple in structure, good reliability, long service life; Yet there is no the sealed high-voltage resistant structure between the control coil of this kind electromagnet and the working rotor chamber, in a single day fluid enter working chamber, thereby control coil will directly be immersed in the damage that causes electromagnet in the fluid, thereby can't work under the wet type state.
Summary of the invention
For overcome existing spring-free directly operated type high-speed switch electromagnet without sealed high-voltage resistant structure, the deficiency that can't under the wet type state, work, the utility model provides a kind of and has good high pressure resistant property, adapts to the high pressure resistant spring-free directly operated type high-speed switch electromagnet of working under the wet type state.
The utility model for the technical scheme that solves the problems of the technologies described above employing is:
A kind of high pressure resistant spring-free directly operated type high-speed switch electromagnet, comprise front end housing and rear end cap, described high-speed switch electromagnet also comprises yoke parts and armature assembly, described armature assembly comprises armature and the push rod that links with the digital switch valve core, described armature is fixedly mounted on the described push rod, described push rod is sleeved on front end housing and/or the rear end cap slidably, described yoke parts comprise the first yoke, the second yoke, the 3rd yoke, magnetism-isolating loop, coil and permanent magnet, described the first yoke, the second yoke, the 3rd yoke is arranged in described armature outer ring, described the first yoke and the second yoke all are the half opening shape, the opening of described the first yoke and the second yoke is relative and form cavity, described magnetism-isolating loop is positioned at described cavity, and described coil encircling forms the current excitation source at magnetism-isolating loop; Described the 3rd yoke is the filled circles ring-type; Described permanent magnet changes into the N utmost point and the S utmost point between described the second yoke and the 3rd yoke and by axial magnetic, described the 3rd yoke is fixedly connected with rear end cap, described the first yoke is fixedly connected with front end housing, the inboard of described front end housing and rear end cap respectively has an annular groove and is used for placing the first sealing ring, the 6th sealing ring, described the first sealing ring contacts with the 3rd yoke, and described the 6th sealing ring contacts with the first yoke; The side that the second yoke, the 3rd yoke are connected with permanent magnet respectively respectively has an annular groove and is used for placing the 4th sealing ring, the 5th sealing ring; The both sides of coil retainer respectively have an annular groove and are used for placing the second sealing ring and the 3rd sealing ring, and described the second sealing ring contacts with the first yoke, and described the 3rd sealing ring contacts with the second yoke.
Further, for reducing the movement inertia of armature, design the armature 4 of described drag cup shape, to obtain high dynamic response, satisfied the needs of switch electromagnet speed-sensitive switch.
The beneficial effects of the utility model are mainly manifested in: 1, adopted simple and reliable high pressure resistant structure, so that system possesses the ability of working under the wet type state; 2, commutate and impact when resetting and noise little, working stability; 3, the control coil temperature rise is low, and lifetime of system is long; 4, the friction of motion parts is little, and greasy property is good, is conducive to keep for a long time precision.
Description of drawings
Fig. 1 is structural principle schematic diagram of the present utility model.
Fig. 2 is physical dimension schematic diagram of the present utility model.
Fig. 3 a is the operation principle schematic diagram that armature of the present utility model is in the no power stream mode.
Fig. 3 b is the operation principle schematic diagram that armature of the present utility model is in an energising poised state.
Fig. 3 c is the operation principle schematic diagram that armature of the present utility model is in another energising poised state.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
With reference to Fig. 1～Fig. 3 c, a kind of high pressure resistant spring-free directly operated type high-speed switch electromagnet, comprise yoke parts, armature assembly, front end housing 1 and rear end cap 15, described yoke parts are positioned at the outside of armature assembly, described armature assembly comprises the armature 4 and the push rod 3 that can link to each other with the digital switch valve core of drag cup shape, hollow cup-shaped armature 4 is installed on the push rod 3, the two ends of described push rod 3 are supported on front end housing 1 and the rear end cap 15 by linear bearing 2, and the push rod middle-end is connected with the axis hole interference of armature 4; Described yoke parts comprise the first yoke 5, the second yoke 16, the 3rd yoke 13, coil retainer 17, control coil 8 and permanent magnet 14, described the first yoke 5 and the second yoke 16 all are the half opening shape, described the first yoke 5, the second yoke 16, the 3rd yoke 13 are arranged in the armature outer ring, the opening of described the first yoke 5 and the second yoke 16 is relative and form cavity, the non-magnetic metal material of described coil retainer 17 usefulness is made, be positioned at described cavity, described control coil 8 is looped around and forms the current excitation source on the coil retainer 17; Described the 3rd yoke 13 is the filled circles ring-type; Described permanent magnet 14 changes into the N utmost point and the S utmost point between described the second yoke 16 and the 3rd yoke 13 and by axial magnetic; Described the 3rd yoke 13 is fixedly connected with rear end cap 15, and described the first yoke 5 is fixedly connected with front end housing 1.
Wherein, that side that the second yoke 16, the 3rd yoke 13 are connected with permanent magnet 14 respectively respectively has an annular groove and is used for placing the 4th sealing ring 10, the 5th sealing ring 12, and the inboard of front end housing 1 and rear end cap 15 respectively has an annular groove and is used for placing the first sealing ring 6, the 6th sealing ring 11; The both sides of coil retainer 17 respectively have an annular groove, are used for placing the second sealing ring 7 and the 3rd sealing ring 9.
For reducing the movement inertia of armature, designed the armature 4 of described drag cup shape, to obtain high dynamic response, satisfy the needs of switch electromagnet speed-sensitive switch; Have the canine tooth that the identical axial unequal interval of three facewidth of a, b and c distributes at armature 4 outer surfaces; For making electromagnet obtain larger thrust and higher dynamic response, the pole-core width of the first yoke 5, the second yoke 16 and the 3rd yoke 13 should equate the unified P that is designated as with three canine tooth a, b of armature 4 outer surfaces and the facewidth of c
tThe axial dimension sum S of the pole-core width of the 3rd yoke 13, the second yoke 16 and permanent magnet
KAnd between the canine tooth a of armature 4 outer surfaces and the canine tooth b apart from G
KMust satisfy relational expression S
K=G
K+ P
t/ 2; And the length L of the length L s of whole yoke parts and armature 4
RBetween must satisfy relational expression L
R=L
S+ P
t/ 2.
For satisfying the needs of electromagnet normal operation, front end housing 1, rear end cap 15 and push rod 3 are made by non-magnetic metal material; And the first yoke 5, the second yoke 16, the 3rd yoke 13 and armature 4 are made by the soft magnetic material of high magnetic permeability.
When having fluid to enter the armature working chamber, that side that the second yoke 16, the 3rd yoke 13 are connected with permanent magnet 14 respectively respectively has an annular groove and is used for placing the 4th sealing ring 10, the 5th sealing ring 12, the inboard of front end housing 1 and rear end cap 15 respectively has an annular groove and is used for placing the first sealing ring 6, the 6th sealing ring 11, leaks out the fit clearance of fluid between the electromagnet parts preventing; The both sides of coil retainer 17 respectively have an annular groove, are used for placing the second sealing ring 7 and the 3rd sealing ring 9, so that control coil 8 is isolated with the armature working chamber that is full of fluid; Above-mentioned is high pressure resistant simple and reliable for structure, easily realize, thereby so that system has had the ability of working under the wet type state.
The identical large toothing of the present embodiment three facewidth of uneven distribution on the high-speed switch electromagnet armature is as example, and the utility model is described in further detail by reference to the accompanying drawings.
The operation principle of the present embodiment: shown in Fig. 3 a, the first yoke 5, the second yoke 16, the 3rd yoke 13 form three sections effective working gas gaps with drag cup armature 4 respectively; In the time of control coil 8 obstructed electric current, the polarizing magnetic field that each extremely descends to only have in the working gas gap permanent magnet to produce, because whole permanent magnetic circuit is also asymmetric, its total magnetic conductance is relevant with rotor-position, electromagnet will rest on the position of sum permeance of magnetic circuit maximum automatically, be initial rest position, this moment, the pole body position of the 3rd yoke 13 overlapped with the canine tooth a of armature 4 outer surfaces, and the pole body position of the second yoke 16 and the first yoke 5 respectively with the canine tooth b of armature 4 outer surfaces and the canine tooth c facewidth (P that staggers half
t/ 2) distance, electromagnet stays in initial rest position; When coil 8 passes into shown in Fig. 3 b
During the electric current of direction (along paper inwards), because the permanent magnet magnetic resistance is larger, then just mutually stack in the working gas gap of each self-forming of canine tooth c on the canine tooth b on the second yoke 16 and armature 4, the first yoke 5 and the armature 4 of Current Control magnetic field and permanent magnet polarization magnetic field, wherein controlling magnetic field is identical with the permanent magnet polarization magnetic direction under the air gap of the second yoke 16 and canine tooth b, and magnetic field intensity mutually superposes and strengthens; Current field is opposite with the permanent magnet polarization magnetic direction under the air gap of the first yoke 5 and canine tooth c, magnetic field intensity is cancelled out each other and is weakened, suitably adjust the current strength of control coil 8, can so that the air-gap field of the first yoke 5 and canine tooth c close to zero, then drag cup armature 4 was subject to electromagnetic push and moved right until itself is zero suffered making a concerted effort this moment, and this moment, armature was in the energising equilbrium position; Similarly, pass into shown in Fig. 3 c when coil 8
During the electric current of direction (outside along paper), controlling magnetic field is opposite with the permanent magnet polarization magnetic direction under the air gap of the second yoke 16 and canine tooth b, magnetic field intensity is cancelled out each other and is weakened, and suitably adjusts the current strength of control coil 8, can so that the air-gap field of the second yoke 16 and canine tooth b close to zero; Current field is identical with the permanent magnet polarization magnetic direction under the air gap of the first yoke 5 and canine tooth c, magnetic field intensity mutually superposes and strengthens, drag cup armature 4 was subject to electromagnetic push and was moved to the left until itself is zero suffered making a concerted effort this moment, and armature is in another energising equilbrium position; When coil 8 outages, electromagnet is got back to the initial rest position shown in Fig. 3 a under the effect of permanent magnet pole magnetizing field.Can see, as long as the current switching of control coil 8 just can be controlled the two-way fast back and forth action of electromagnet, and suitably adjusts the structural parameters of electromagnet itself, can control the length of armature 4 displacements, thereby realize two kinds of operating states of open and close of digital switch valve.
Above-mentioned embodiment is used for explaining the utility model; rather than the utility model limited; in the protection range of spirit of the present utility model and claim, any modification and change to the utility model is made all fall into protection range of the present utility model.
Claims (2)
1. high pressure resistant spring-free directly operated type high-speed switch electromagnet, comprise front end housing and rear end cap, described high-speed switch electromagnet also comprises yoke parts and armature assembly, described armature assembly comprises armature and the push rod that links with the digital switch valve core, described armature is fixedly mounted on the described push rod, described push rod is sleeved on front end housing and/or the rear end cap slidably, described yoke parts comprise the first yoke, the second yoke, the 3rd yoke, magnetism-isolating loop, coil and permanent magnet, described the first yoke, the second yoke, the 3rd yoke is arranged in described armature outer ring, described the first yoke and the second yoke all are the half opening shape, the opening of described the first yoke and the second yoke is relative and form cavity, described magnetism-isolating loop is positioned at described cavity, and described coil encircling forms the current excitation source at magnetism-isolating loop; Described the 3rd yoke is the filled circles ring-type; Described permanent magnet changes into the N utmost point and the S utmost point between described the second yoke and the 3rd yoke and by axial magnetic, described the 3rd yoke is fixedly connected with rear end cap, described the first yoke is fixedly connected with front end housing, it is characterized in that: the inboard of described front end housing and rear end cap respectively has an annular groove and is used for placing the first sealing ring, the 6th sealing ring, described the first sealing ring contacts with the 3rd yoke, and described the 6th sealing ring contacts with the first yoke; The side that the second yoke, the 3rd yoke are connected with permanent magnet respectively respectively has an annular groove and is used for placing the 4th sealing ring, the 5th sealing ring; The both sides of coil retainer respectively have an annular groove and are used for placing the second sealing ring and the 3rd sealing ring, and described the second sealing ring contacts with the first yoke, and described the 3rd sealing ring contacts with the second yoke.
2. high pressure resistant spring-free directly operated type high-speed switch electromagnet as claimed in claim 1, it is characterized in that: described armature is the drag cup shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202778199U CN202678020U (en) | 2012-06-12 | 2012-06-12 | Pressure-resistance springless direct-acting high-speed switch electromagnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202778199U CN202678020U (en) | 2012-06-12 | 2012-06-12 | Pressure-resistance springless direct-acting high-speed switch electromagnet |
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| Publication Number | Publication Date |
|---|---|
| CN202678020U true CN202678020U (en) | 2013-01-16 |
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ID=47498906
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202778199U Expired - Fee Related CN202678020U (en) | 2012-06-12 | 2012-06-12 | Pressure-resistance springless direct-acting high-speed switch electromagnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202678020U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369210A (en) * | 2016-11-01 | 2017-02-01 | 珠海优特电力科技股份有限公司 | Electromagnetic valve |
| CN108447647A (en) * | 2018-04-16 | 2018-08-24 | 浙江工业大学 | A kind of four magnetic pole bidirectional electromagnet of wet type based on electrical excitation |
| CN109300648A (en) * | 2018-10-25 | 2019-02-01 | 同济大学 | A kind of high-pressure-resistmoving-magnet moving-magnet type bidirectional proportional electromagnet |
| CN110415913A (en) * | 2019-08-29 | 2019-11-05 | 北京天地玛珂电液控制系统有限公司 | Electric control permanent magnet device based on permanent magnet magnetic line partial closure |
-
2012
- 2012-06-12 CN CN2012202778199U patent/CN202678020U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369210A (en) * | 2016-11-01 | 2017-02-01 | 珠海优特电力科技股份有限公司 | Electromagnetic valve |
| CN106369210B (en) * | 2016-11-01 | 2019-01-25 | 珠海优特智厨科技有限公司 | A kind of solenoid valve |
| CN108447647A (en) * | 2018-04-16 | 2018-08-24 | 浙江工业大学 | A kind of four magnetic pole bidirectional electromagnet of wet type based on electrical excitation |
| CN108447647B (en) * | 2018-04-16 | 2023-07-11 | 浙江工业大学 | Wet-type four-magnet column type electromagnet based on electric excitation |
| CN109300648A (en) * | 2018-10-25 | 2019-02-01 | 同济大学 | A kind of high-pressure-resistmoving-magnet moving-magnet type bidirectional proportional electromagnet |
| CN109300648B (en) * | 2018-10-25 | 2019-10-18 | 同济大学 | A kind of high-pressure-resistmoving-magnet moving-magnet type bidirectional proportional electromagnet |
| CN110415913A (en) * | 2019-08-29 | 2019-11-05 | 北京天地玛珂电液控制系统有限公司 | Electric control permanent magnet device based on permanent magnet magnetic line partial closure |
| CN110415913B (en) * | 2019-08-29 | 2021-07-13 | 北京天地玛珂电液控制系统有限公司 | Electric control permanent magnet device based on local closing of permanent magnet magnetic force line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20150612 |
|
| EXPY | Termination of patent right or utility model |