阅读说明：本技术 一种直通式微型电磁阀 (Straight-through type miniature electromagnetic valve ) 是由 赫伟涛 卿顺 于 2020-06-09 设计创作，主要内容包括：本发明提供了一种直通式微型电磁阀,包括阀芯、呈圆柱型的外壳及套在外壳内的线圈组件；线圈组件包括接管嘴、隔磁环、挡铁及线圈；接管嘴的下端固定连接隔磁环,隔磁环的下端固定连接挡铁；接管嘴、隔磁环及挡铁的外侧面形成线圈槽,线圈设于线圈槽内；接管嘴、隔磁环及挡铁的内侧面形成容置腔；线圈连接有引线,引线从外壳侧面开设的孔引出；阀芯置于线圈组件形成的容置腔内,阀芯开设有介质流通通道,阀芯与接管嘴之间设有弹簧；外壳的下方设有出口,阀芯的下端镶嵌有氟塑料,氟塑料用于与外壳的下方的出口形成密封。本发明的有益效果在于：整体结构简单,零组件种类少,结构紧凑,装配方便,集成程度较高。(The invention provides a straight-through type micro electromagnetic valve which comprises a valve core, a cylindrical shell and a coil assembly, wherein the coil assembly is sleeved in the shell; the coil assembly comprises a filler neck, a magnetism isolating ring, a stop iron and a coil; the lower end of the filler neck is fixedly connected with a magnetism isolating ring, and the lower end of the magnetism isolating ring is fixedly connected with a stop iron; the outer side surfaces of the filler neck, the magnetism isolating ring and the stop iron form a coil slot, and the coil is arranged in the coil slot; the inner side surfaces of the filler neck, the magnetism isolating ring and the stop iron form an accommodating cavity; the coil is connected with a lead, and the lead is led out from a hole formed in the side surface of the shell; the valve core is arranged in an accommodating cavity formed by the coil assembly, a medium circulation channel is formed in the valve core, and a spring is arranged between the valve core and the filler neck; an outlet is arranged below the shell, fluoroplastic is embedded at the lower end of the valve core, and the fluoroplastic is used for forming sealing with the outlet below the shell. The invention has the beneficial effects that: the integrated structure is simple, the types of the components are few, the structure is compact, the assembly is convenient, and the integration degree is higher.)

1. A straight-through type micro electromagnetic valve is characterized in that: comprises a valve core, a cylindrical shell and a coil component sleeved in the shell;

the coil assembly comprises a filler neck, a magnetism isolating ring, a stop iron and a coil; the lower end of the filler neck is fixedly connected with a magnetism isolating ring, and the lower end of the magnetism isolating ring is fixedly connected with a stop iron; the outer side surfaces of the filler neck, the magnetism isolating ring and the stop iron form a coil slot, and the coil is arranged in the coil slot; the inner side surfaces of the filler neck, the magnetism isolating ring and the stop iron form an accommodating cavity;

the coil is connected with a lead, and the lead is led out from a hole formed in the side surface of the shell;

the valve core is arranged in an accommodating cavity formed by the coil assembly, a medium circulation channel is formed in the valve core, and a spring is arranged between the valve core and the filler neck;

an outlet is arranged below the shell, fluoroplastic is embedded at the lower end of the valve core, and the fluoroplastic is used for forming sealing with the outlet below the shell.

2. A flow-through micro solenoid valve as claimed in claim 1, wherein: the medium circulation channel of the valve core is inverted Y-shaped.

3. A flow-through micro solenoid valve as claimed in claim 2, wherein: the outlet of the medium circulation channel of the valve core is arranged on the side surface of the lower end of the valve core, and a gap is formed between the side surface of the lower end of the valve core and the shell.

4. A flow-through micro solenoid valve as claimed in claim 1, wherein: the coil assembly is connected with the shell in an interference mode.

5. A flow-through micro solenoid valve as claimed in claim 4, wherein: the joint of the shell and the filler neck is reinforced by spot welding.

6. A flow-through micro solenoid valve as claimed in claim 1, wherein: and a rubber sealing ring is arranged between the shell and the stop iron of the coil assembly.

7. A flow-through micro solenoid valve as claimed in claim 1, wherein: the filler neck, the magnetism isolating ring and the stop iron are fixed through welding.

8. A flow-through micro solenoid valve as claimed in claim 1, wherein: the lead wire is connected with a connector lug of the coil through welding.

9. A flow-through micro solenoid valve as claimed in claim 1, wherein: the nozzle of the filler neck is a 60-degree horn nozzle structure.

10. A flow-through micro solenoid valve as claimed in claim 1, wherein: the outlet below the shell is horn-shaped.

Technical Field

The invention relates to an electromagnetic valve, in particular to a straight-through type micro electromagnetic valve.

Background

The traditional straight-through electromagnetic valve for the liquid rocket engine has the advantages of larger structure, more parts, low integration degree, small structural size, complex structure and incapability of minimizing the mass, and certain defects when being used for a micro propulsion system, such as a cold air propulsion system. Therefore, it is necessary to provide a solenoid valve structure that is more highly integrated and more suitable for a micro propulsion system.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: provides a straight-through type micro electromagnetic valve with high integration level.

In order to solve the technical problems, the invention adopts the technical scheme that: a straight-through type micro electromagnetic valve comprises a valve core, a cylindrical shell and a coil assembly sleeved in the shell;

the coil assembly comprises a filler neck, a magnetism isolating ring, a stop iron and a coil; the lower end of the filler neck is fixedly connected with a magnetism isolating ring, and the lower end of the magnetism isolating ring is fixedly connected with a stop iron; the outer side surfaces of the filler neck, the magnetism isolating ring and the stop iron form a coil slot, and the coil is arranged in the coil slot; the inner side surfaces of the filler neck, the magnetism isolating ring and the stop iron form an accommodating cavity;

the coil is connected with a lead, and the lead is led out from a hole formed in the side surface of the shell;

the valve core is arranged in an accommodating cavity formed by the coil assembly, a medium circulation channel is formed in the valve core, and a spring is arranged between the valve core and the filler neck;

an outlet is arranged below the shell, fluoroplastic is embedded at the lower end of the valve core, and the fluoroplastic is used for forming sealing with the outlet below the shell.

Furthermore, the medium circulation channel of the valve core is inverted Y-shaped.

Further, an outlet of the medium circulation channel of the valve core is arranged on the side surface of the lower end of the valve core, and a gap is formed between the side surface of the lower end of the valve core and the shell.

Furthermore, the coil assembly is connected with the shell in an interference mode.

Furthermore, the joint of the shell and the filler neck is reinforced by spot welding.

Furthermore, a rubber sealing ring is arranged between the shell and a stop iron of the coil assembly.

Furthermore, the filler neck, the magnetism isolating ring and the stop iron are fixed by welding.

Further, the lead wire is connected with a connector lug of the coil through welding.

Further, the nozzle opening of the filler neck is of a 60-degree horn nozzle structure.

Further, an outlet below the shell is horn-shaped.

Compared with the traditional straight-through electromagnetic valve structure scheme, the invention mainly has the following advantages:

1) the whole structure is simple, the types of components are few, the structure is compact, and the assembly is convenient;

2) the shell integrates the functions of sealing and spraying pipes, and the integration level is high.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the mechanisms shown in the drawings without creative efforts.

FIG. 1 is a structural diagram of a straight-through micro solenoid valve according to an embodiment of the present invention;

FIG. 2 is a diagram of a coil assembly according to an embodiment of the present invention;

wherein, 1-valve core, 2-coil, 3-shell, 4-filler neck, 5-spring, 6-magnetism isolating ring, 7-iron block, 8-rubber sealing ring, 9-lead, 10-fluoroplastic, and 11-shell outlet.

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.

It should be noted that the description of the invention relating to "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Please refer to fig. 1 and fig. 2 for the technical solutions of the following embodiments.