CN216478947U

CN216478947U - Double-coil self-holding high-pressure coaxial electromagnetic valve

Info

Publication number: CN216478947U
Application number: CN202122821669.5U
Authority: CN
Inventors: 卢洪康
Original assignee: Xi'an Huiyuan Instruments & Valves Co ltd
Current assignee: Xi'an Huiyuan Instruments & Valves Co ltd
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2022-05-10
Anticipated expiration: 2031-11-18

Abstract

The utility model belongs to the technical field of valves, in particular to a double-coil self-holding type high-pressure coaxial electromagnetic valve which comprises a coil framework, wherein the coil framework comprises an end head, a magnetism isolating ring II, a magnetism conducting ring, a magnetism isolating ring I and a fixed iron core I which are sequentially welded from top to bottom, the upper end of the coil framework is provided with an upper valve body, the bottom end of the coil framework is provided with a lower valve body, the outer part of the coil framework is sequentially provided with a permanent magnet, a magnetism isolating ring and a shell from inside to outside, the inner part of the coil framework is provided with a valve core, the valve core comprises a movable iron core and a steel pipe which are welded, the upper end of the valve core penetrates through the coil framework and extends to the inner part of the upper valve body, a sealing seat and an upper pressing plate are sequentially arranged between the coil framework and the upper valve body from bottom to top, the double-coil self-holding type high-pressure coaxial electromagnetic valve adopts a pressure balanced structure, and can be started under zero pressure no matter a vacuum pipeline or a high-pressure pipeline, the device has the characteristics of rapid opening and closing, high reliability and installation at any angle position.

Description

Double-coil self-holding high-pressure coaxial electromagnetic valve

Technical Field

The utility model belongs to the technical field of valves, and particularly relates to a double-coil self-holding type high-pressure coaxial electromagnetic valve.

Background

The electromagnetic valve is industrial equipment controlled by electromagnetism, is an automatic basic element for controlling fluid, and at present, the high-pressure electromagnetic valve on the market generally has the following defects: the electromagnetic valve has the advantages of low response speed, easy blockage when encountering viscous media, small flow, single installation direction of the electromagnetic valve, horizontal installation, easy damage after long-term electrification and high power consumption, and the sealing material is damaged under a high-pressure state, thereby causing the abnormal work of the electromagnetic valve.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides a double-coil self-holding type high-pressure coaxial electromagnetic valve, which adopts a permanent magnet self-holding type self-holding structure to control the opening and closing of the electromagnetic valve, is suitable for the working condition that the opening or closing state needs to be kept for a long time, saves energy, reduces consumption, has overlong service life, adopts a pressure balance type structure, has balanced stress of the electromagnetic valve, does not need to consider factors of shunt pressure and differential pressure, and can ensure reliable, quick and accurate control no matter a vacuum pipeline or a high-pressure pipeline; when the electromagnetic valve is opened, medium pressure does not need to be considered, and the electromagnetic valve can be opened and closed by zero pressure difference.

In order to achieve the purpose, the utility model provides the following technical scheme: the double-coil self-holding high-pressure coaxial electromagnetic valve comprises a coil framework, wherein the coil framework comprises an end head, a magnetism isolating ring II, a magnetic conductive ring, a magnetism isolating ring I and a fixed iron core I which are welded in sequence from top to bottom, an upper valve body is installed at the upper end of the coil framework, a lower valve body is installed at the bottom end of the coil framework, a permanent magnet, a magnetic ring and a shell are sequentially installed outside the coil framework from inside to outside, a valve core is installed inside the coil framework and comprises a movable iron core and a steel pipe which are welded, the upper end of the valve core penetrates through the coil framework and extends to the inside of the upper valve body, a sealing seat and an upper pressing plate are sequentially installed between the coil framework and the upper valve body from bottom to top, the fixed iron core II and the lower pressing plate are sequentially installed at the bottom end of the coil framework, a valve seat is installed at the upper end of the lower valve body, and a sealing surface is embedded in the upper end surface of the valve seat, and the bottom end of the valve core sequentially penetrates through the second fixed iron core and the lower pressing plate and is abutted against the sealing surface.

As the preferred technical scheme of the double-coil self-holding high-pressure coaxial electromagnetic valve, a coil I and a coil II are arranged between a coil framework and a shell, the coil I and the coil II are respectively wound with the upper end and the lower end of a magnetic conductive ring, and one side of the shell is provided with a lead hole.

As the preferred technical scheme of the double-coil self-holding high-pressure coaxial electromagnetic valve, an O-shaped sealing ring I is arranged between the upper end face of the coil framework and the upper pressure plate, and an O-shaped sealing ring II is arranged at the joint of the upper end of the coil framework and the sealing seat.

As the preferred technical scheme of the double-coil self-holding high-pressure coaxial electromagnetic valve, a first Stent seal ring is arranged at the joint of the upper end surface of the seal seat and the valve core.

As the preferred technical scheme of the double-coil self-holding high-pressure coaxial electromagnetic valve, an O-shaped sealing ring IV is arranged between the bottom end face of the coil framework and the lower pressing plate, and an O-shaped sealing ring III is arranged at the joint of the lower end of the coil framework and the fixed iron core II.

As the preferable technical scheme of the double-coil self-holding high-pressure coaxial electromagnetic valve, a steckel seal ring II is arranged between the bottom end face of the fixed iron core II and the valve core.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model adopts a pressure balance type structure, can be started at zero pressure no matter a vacuum pipeline or a high-pressure pipeline, has the characteristics of quick opening and closing, high reliability and installation at any angle position, does not scale in a body, does not rust, has good sealing property, no leakage, large flow, and bidirectional flow of a medium, is very suitable for controlling the medium with particles and viscous and easy to condense, realizes a zero-pressure-difference opening and closing valve without considering the pressure of the medium when the valve is opened, and is suitable for controlling the medium with gas state, vacuum state, liquid state, particles, high pollution and corrosiveness.

2. The utility model adopts a permanent magnet self-locking type self-holding structure, the opening and closing of the electromagnetic valve are respectively controlled by the first coil and the second coil, the electromagnetic valve can be opened or closed at the moment of electrifying the coils, and the opening and closing state of the electromagnetic valve is kept unchanged after power failure, so that the electromagnetic valve is suitable for the working condition that the opening or closing state needs to be kept for a long time, energy is saved, consumption is reduced, and the service life is overlong.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of the structure at B of FIG. 1;

fig. 4 is a schematic diagram of the working principle of the present invention.

In the figure: 1. an upper valve body; 2. an upper pressure plate; 3. a first O-shaped sealing ring; 4. a first steiner seal ring; 5. a sealing seat; 6. an O-shaped sealing ring II; 7. a first fixed iron core; 8. a steel pipe; 9. a magnetism isolating ring I; 10. a movable iron core; 11. a magnetic conductive ring; 12. a permanent magnet; 13. a magnetic ring; 14. a second magnetism isolating ring; 15. a housing; 16. a second fixed iron core; 17. a tip; 18. an O-shaped sealing ring III; 19. a steckel seal ring II; 20. a lower pressing plate; 21. an O-shaped sealing ring IV; 22. a valve seat; 23. a sealing surface; 24. a lower valve body; 25. a coil bobbin; 26. a valve core; 27. a first coil; 28. and a second coil.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1, fig. 2, fig. 3 and fig. 4, the present invention provides the following technical solutions: the double-coil self-holding high-pressure coaxial electromagnetic valve comprises a coil framework 25, wherein the coil framework 25 comprises an end 17, a second magnetism isolating ring 14, a magnetic conductive ring 11, a first magnetism isolating ring 9 and a first fixed iron core 7 which are sequentially welded from top to bottom, an upper valve body 1 is installed at the upper end of the coil framework 25, a lower valve body 24 is installed at the bottom end of the coil framework 25, a permanent magnet 12, a magnetic ring 13 and a shell 15 are sequentially installed outside the coil framework 25 from inside to outside, a valve core 26 is installed inside the coil framework 25, the valve core 26 comprises a movable iron core 10 and a steel pipe 8 which are formed by welding, the upper end of the valve core 26 penetrates through the coil framework 25 and extends to the inside of the upper valve body 1, a sealing seat 5 and an upper pressing plate 2 are sequentially installed between the coil framework 25 and the upper valve body 1 from bottom to top, a second fixed iron core 16 and a lower pressing plate 20 are sequentially installed at the bottom end of the coil framework 25, and a valve seat 22 is installed at the upper end of the lower valve body 24, and the upper end surface of the valve seat 22 is embedded with a sealing surface 23, and the bottom end of the valve core 26 sequentially penetrates through the second fixed iron core 16 and the lower pressing plate 20 and is abutted against the sealing surface 23.

In the embodiment, the pressure balance type structure is utilized, the design enables the stress of the electromagnetic valve to be balanced without considering factors of shunt pressure and differential pressure, the accurate action and the reliable performance can be ensured no matter the electromagnetic valve is in a vacuum state or a high-pressure state, a permanent magnet 12 self-locking type self-holding control structure is adopted, a coil I27 and a coil II 28 can ensure a required working state without long-time electrification and instant electrification, the energy consumption is low, the service life is long, a plane seal is adopted in the sealing structure, the force borne by a sealing surface 23 is on an annular surface smaller than 0.3mm, a sealing material is made of an ultrahigh molecular material with high wear resistance and impact resistance, the sealing tightness in the high-pressure state is ensured, the sealing surface 23 is not easy to damage, and the content which is not described in detail in the embodiment is the prior art.

Referring to fig. 1, a first coil 27 and a second coil 28 are disposed between the bobbin 25 and the casing 15, the first coil 27 and the second coil 28 are respectively wound around the upper end and the lower end of the flux ring 11, and a lead hole is disposed at one side of the casing 15.

In this embodiment, the first coil 27 and the second coil 28 respectively control the opening and closing of the electromagnetic valve, the electromagnetic valve can be opened or closed at the moment of energization of the coils, and after the electromagnetic valve is powered off, the opening and closing states of the electromagnetic valve are kept unchanged, wherein the connection between the inner and outer wires of the first coil 27 and the second coil 28 in the housing 15 is facilitated through the arrangement of the wire connection holes.

Referring to fig. 1, 2 and 3, a first O-ring 3 is installed between the upper end surface of the coil skeleton 25 and the upper pressure plate 2, a second O-ring 6 is installed at the joint of the upper end of the coil skeleton 25 and the seal seat 5, a first steckel seal 4 is installed at the joint of the upper end surface of the seal seat 5 and the valve core 26, a fourth O-ring 21 is installed between the bottom end surface of the coil skeleton 25 and the lower pressure plate 20, a third O-ring 18 is installed at the joint of the lower end of the coil skeleton 25 and the second fixed iron core 16, and a second steckel seal 19 is installed between the bottom end surface of the second fixed iron core 16 and the valve core 26.

In the embodiment, the first O-shaped sealing ring 3, the second O-shaped sealing ring 6, the third O-shaped sealing ring 18, the fourth O-shaped sealing ring 21, the first Stent sealing ring 4 and the second Stent sealing ring 19 which are made of wear-resistant ultrahigh molecular materials are used as elastic sealing elements, so that the overall sealing and leakage-proof effects of the utility model can be improved, and the safe use of the utility model is facilitated.

The utility model has the following use flow and working principle: when the solenoid valve is in a valve closing state, when a medium enters the internal cavity of the solenoid valve from the upper end, the medium has a downward force F1 to the valve core 26, and an upward force F2 is arranged at the position of the valve seat 22, because the difference between the stressed areas of F1 and F2 is small, the pressure of the medium is small, when the coil I27 is electrified instantaneously, the coil I27 generates electromagnetic force to enable the valve core 26 to be magnetized to overcome the medium pressure, the valve core 26 moves upwards to attract the fixed iron core I7, after the instantaneous electrification is finished, the electromagnetic force disappears, because of the self-locking effect of the permanent magnet 12, the valve core 26 is still in the original position, at the moment, the valve core 26 leaves the valve seat 22, the solenoid valve is opened, when the medium enters the internal cavity of the solenoid valve from the lower end during the electrification, the medium has an upward force F3 and a downward force F4 to the valve core 26, because the stressed areas of the F3 and the F4 are the same, and the directions are opposite, the stressed forces can be mutually offset, when the second coil 28 is instantaneously electrified, the second coil 28 generates electromagnetic force to enable the valve core 26 to be magnetized, the valve core 26 moves downwards to be attracted with the second fixed iron core 16, after the instant electrification is finished, the electromagnetic force disappears and is subjected to the self-locking action of the permanent magnet 12, the electromagnetic valve is always in a closed state, when the first coil 27 is instantaneously electrified, if the electromagnet does not have any reaction, the valve is in an open state, when the electromagnetic coil is electrified by a reverse power supply, the valve is closed, when the second coil 28 is instantaneously electrified, if the electromagnet does not have any reaction, the valve is in a closed state, and when the electromagnetic coil is electrified by the reverse power supply, the valve is opened.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the utility model as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Double coil self-sustaining formula high pressure coaxial solenoid valve, including coil skeleton (25), its characterized in that: the coil framework (25) comprises an end (17), a second magnetism isolating ring (14), a magnetic conducting ring (11), a first magnetism isolating ring (9) and a first fixed iron core (7) which are sequentially welded from top to bottom, an upper valve body (1) is installed at the upper end of the coil framework (25), a lower valve body (24) is installed at the bottom end of the coil framework (25), a permanent magnet (12), a magnetic ring (13) and a shell (15) are sequentially installed at the outer part of the coil framework (25) from inside to outside, a valve core (26) is installed inside the coil framework (25), the valve core (26) comprises a movable iron core (10) and a steel pipe (8) which are welded, the upper end of the valve core (26) penetrates through the coil framework (25) and extends to the inside of the upper valve body (1), a sealing seat (5) and an upper pressing plate (2) are sequentially installed between the coil framework (25) and the upper valve body (1) from bottom to top, the bottom of coil skeleton (25) is installed in proper order and is decided two (16) of iron core and holding down plate (20), disk seat (22) are installed to the upper end of lower valve body (24), just sealed face (23) have been inlayed in the up end of disk seat (22), the bottom of case (26) runs through in proper order and decides two (16) of iron core and holding down plate (20) and just offsets with sealed face (23).

2. A dual coil self-sustaining high-pressure coaxial solenoid valve according to claim 1, wherein: be provided with coil one (27) and coil two (28) between coil skeleton (25) and shell (15), just coil one (27) and coil two (28) twine with the upper and lower both ends of magnetic ring (11) respectively, one side of shell (15) is provided with the pin hole.

3. A dual coil self-sustaining high-pressure coaxial solenoid valve according to claim 1, wherein: an O-shaped sealing ring I (3) is installed between the upper end face of the coil framework (25) and the upper pressing plate (2), and an O-shaped sealing ring II (6) is installed at the joint of the upper end of the coil framework (25) and the sealing seat (5).

4. A dual coil self-sustaining high-pressure coaxial solenoid valve according to claim 1, wherein: and a first Stent seal ring (4) is arranged at the joint of the upper end surface of the seal seat (5) and the valve core (26).

5. A dual coil self-sustaining high-pressure coaxial solenoid valve according to claim 1, wherein: an O-shaped sealing ring IV (21) is installed between the bottom end face of the coil framework (25) and the lower pressing plate (20), and an O-shaped sealing ring III (18) is installed at the joint of the lower end of the coil framework (25) and the fixed iron core II (16).

6. A dual coil self-sustaining high-pressure coaxial solenoid valve according to claim 1, wherein: and a second Stent seal ring (19) is arranged between the bottom end surface of the second fixed iron core (16) and the valve core (26).