阅读说明：本技术 一种超短行程超低功耗自保持先导式电磁阀及其组件 (Ultrashort-stroke ultralow-power-consumption self-holding pilot type electromagnetic valve and assembly thereof ) 是由 杨邢 张春雨 于 2021-08-10 设计创作，主要内容包括：本发明涉及电磁阀制造领域,具体的说是一种超短行程超低功耗自保持先导式电磁阀,包括电磁阀头、阀体和先导膜,所述电磁阀头包括阀体上盖,所述先导膜四周压紧并密封安装在阀体和阀体上盖之间,将阀体和阀体上盖之间的腔体分隔为上腔体和下腔体,所述先导膜上开有若干将上腔体和下腔体连通的先导孔；所述上腔体和下腔体之间固定有中心柱,先导膜中心孔套在中心柱上,密封并可在沿着中心柱上下移动,中心柱设置有中空的泄压孔,所述中心柱顶端与阀体上盖中动铁芯下端的橡胶塞头相对应。采用上述后结构后,本发明电池阀的动铁芯工作距离很短,电磁阀可以在超低脉冲和超低功率下工作,这样就可以大大的减少电能的消耗。(The invention relates to the field of electromagnetic valve manufacturing, in particular to an ultrashort-stroke ultralow-power-consumption self-maintaining pilot type electromagnetic valve which comprises an electromagnetic valve head, a valve body and a pilot membrane, wherein the electromagnetic valve head comprises a valve body upper cover, the periphery of the pilot membrane is tightly pressed and hermetically arranged between the valve body and the valve body upper cover, a cavity between the valve body and the valve body upper cover is divided into an upper cavity and a lower cavity, and a plurality of pilot holes for communicating the upper cavity with the lower cavity are formed in the pilot membrane; a central column is fixed between the upper cavity and the lower cavity, a central hole of the pilot membrane is sleeved on the central column, the central column is sealed and can move up and down along the central column, a hollow pressure relief hole is formed in the central column, and the top end of the central column corresponds to a rubber plug at the lower end of a movable iron core in the upper cover of the valve body. After the structure is adopted, the working distance of the movable iron core of the battery valve is short, and the electromagnetic valve can work under ultra-low pulse and ultra-low power, so that the consumption of electric energy can be greatly reduced.)

1. The utility model provides an ultrashort stroke super low-power consumption self-sustaining pilot operated solenoid valve, includes solenoid valve head (3), valve body (1) and pilot operated membrane (2), its characterized in that:

the electromagnetic valve head (3) comprises a valve body upper cover (3-1), the periphery of the guide membrane (2) is tightly pressed and hermetically installed between the valve body (1) and the valve body upper cover (3-1), a cavity between the valve body (1) and the valve body upper cover (3-1) is divided into an upper cavity and a lower cavity, and a plurality of guide holes (2-1) for communicating the upper cavity with the lower cavity are formed in the guide membrane (2);

a central column (1-2) is fixed between the upper cavity and the lower cavity, a pilot membrane central hole (2-2) is sleeved on the central column (1-2) and is sealed and can move up and down along the central column (1-2), a hollow pressure relief hole (1-3) is formed in the central column (1-2), and the top end of the central column (1-2) corresponds to a rubber plug head (3-3) at the lower end of a movable iron core (3-4) in a valve body upper cover (3-1).

2. The ultra-short stroke ultra-low power consumption self-sustaining pilot operated solenoid valve as claimed in claim 1, wherein: the valve body (1) is provided with a liquid inlet (4) and a liquid outlet (5), and the outer side of the central column (1-2) is fixedly provided with a liquid sealing port (1-4) for separating the liquid inlet (4) from the liquid outlet (5).

3. The ultra-short stroke ultra-low power consumption self-sustaining pilot operated solenoid valve of claim 2, wherein: the liquid sealing ports (1-4) and the valve body (1) are integrally formed.

4. The ultra-short stroke ultra-low power consumption self-sustaining pilot operated solenoid valve of claim 2, wherein: the liquid inlet (4) and the liquid outlet (5) are arranged in a side liquid inlet, a lower liquid outlet or a back liquid inlet, a lower liquid outlet or a side liquid inlet and a side liquid outlet.

5. The ultra-short stroke ultra-low power consumption self-sustaining pilot operated solenoid valve as claimed in claim 1, wherein: the movable iron core (3-4) is sleeved with a spring (3-5), and the spring (3-5) and the movable iron core (3-4) are clamped on the inner side of the valve body upper cover (3-1).

6. The ultra-short stroke ultra-low power consumption self-sustaining pilot operated solenoid valve of claim 5, wherein: a static iron core (3-6) is arranged at a position, corresponding to the movable iron core (3-4), above the valve body upper cover (3-1), a permanent magnet (3-7) is arranged at the upper end of the static iron core (3-6), and the permanent magnet (3-7) and the outer side of the valve body upper cover (3-1) are tightly sealed through an upper gland and yoke integrated piece (3-8); a cavity for placing the electromagnetic coil (3-2) is formed between the valve body upper cover (3-1) and the upper gland yoke integrated piece (3-8), and the electromagnetic coil (3-2) is wound on the outer side of the valve body upper cover (3-1).

7. The ultra-short stroke ultra-low power consumption self-sustaining pilot operated solenoid valve as claimed in claim 1, wherein: the diameter of the upper part of the guide membrane central hole (2-2) is smaller than or equal to that of the lower part.

8. The ultra-short stroke ultra-low power consumption self-sustaining pilot operated solenoid valve as claimed in claim 1, wherein: the central column (1-2) is integrally formed with the valve body or is tightly matched with the valve body.

9. The ultra-short stroke ultra-low power consumption self-sustaining pilot operated solenoid valve of claim 8, wherein: the outer side of the central column (1-2) is provided with a central column outer sleeve (1-5) which is tightly matched with the central column, and the central column outer sleeve (1-5) is fixedly connected with the valve body (1) through a connecting rib plate (1-1).

10. An ultrashort stroke ultralow power consumption self-sustaining pilot operated solenoid valve subassembly which characterized in that: comprising two or more solenoid valves according to claims 1-9, with a common inlet between the solenoid valves.

Technical Field

The invention relates to the field of electromagnetic valve manufacturing, in particular to an ultra-short stroke and ultra-low power consumption self-holding pilot-operated electromagnetic valve and an assembly thereof.

Background

The solenoid valve is an automatic basic element for controlling fluid and belongs to an actuator. Typically, the solenoid valve consists of an electromagnet and a valve. The electromagnetic valve acts according to an on/off command sent by the control unit, and actually supplies power to the electromagnet for continuous attraction. The electromagnet is simple in structure and convenient to control, but has obvious defects, namely, the electromagnet continuously consumes electric energy; secondly, the electromagnetic coil is easy to heat and is not suitable for the environment with low energy consumption and long-time work.

In order to realize the environment of low energy consumption and long-time work, the electromagnetic valve needs to be realized from two aspects, namely, the electromagnetic valve has short working time, and preferably can be electrified (at the moment of opening or closing) when the electromagnetic valve works and is not electrified when the electromagnetic valve does not work; and the power of the electromagnetic valve in the second realization working is low.

In order to realize the first aspect that the solenoid valve has short working time, is electrified when in working and is not electrified when not in working, the self-holding solenoid valve or the pulse solenoid valve is invented.

Chinese patent CN201982718U discloses a pulse electromagnetic valve, which comprises a set of membrane assembly, wherein the membrane assembly comprises a membrane body and a membrane gland, the pressure relief hole penetrates through the upper and lower surfaces of the membrane body, and the membrane body is in sealing abutment with the inner cavity wall of the pressure regulating cavity; the diaphragm body can move upwards to open and downwards to close.

The position that the diaphragm body moved up and down that this patent said is different, has a "migration distance" between the upper and lower position, so the distance that the movable iron core need move must be greater than this "migration distance", for overcoming the stroke and the pressure of movable iron core, the specification of solenoid and permanent magnet is chooseed for use the ratio greatly, leads to manufacturing cost high, in addition, solenoid's consumption is big, and is energy-concerving and environment-protective not.

Also, patent CN209146387 discloses a low power consumption self-holding solenoid valve, which includes a valve body and a pilot assembly; the valve body is provided with a valve body inlet and a valve body outlet which are separated from each other, the valve body inlet is communicated with the valve body outlet through a first cavity, a first diaphragm for opening and closing the valve body outlet is arranged in the first cavity, and a first spring is arranged between the first diaphragm and the top wall of the first cavity; a valve body passage communicated with the valve body outlet is also arranged in the valve body; the guide assembly comprises a shell fixedly connected with the valve body, and a diaphragm lower cover, a second diaphragm, a diaphragm fixing disc, a second spring, a diaphragm upper cover and a moving iron mechanism which are arranged in the shell.

The electromagnetic valve adopts a two-stage pilot structure, so that the force acting on the movable iron core is reduced, and the movable iron core is driven by the coil, so that the power consumption of the coil is also reduced, and the aim of reducing the energy consumption is finally fulfilled.

The patent realizes the breakthrough of the second aspect, namely, the low power of the electromagnetic valve during operation. However, the electromagnetic valve provided by the invention adopts a two-stage pilot structure, so that the structure is complex and the manufacturing difficulty is high.

Disclosure of Invention

The invention provides a solenoid valve capable of shortening the stroke of a movable iron core of the solenoid valve.

In order to solve the technical problem, the invention provides an ultrashort-stroke ultralow-power-consumption self-retaining pilot type electromagnetic valve, which comprises an electromagnetic valve head, a valve body and a pilot membrane,

the electromagnetic valve head comprises a valve body upper cover, the periphery of the pilot membrane is tightly pressed and hermetically installed between the valve body and the valve body upper cover, a cavity between the valve body and the valve body upper cover is divided into an upper cavity and a lower cavity, and a plurality of pilot holes for communicating the upper cavity with the lower cavity are formed in the pilot membrane;

a central column is fixed between the upper cavity and the lower cavity, a central hole of the pilot membrane is sleeved on the central column, the central column is sealed and can move up and down along the central column, a hollow pressure relief hole is formed in the central column, and the top end of the central column corresponds to a rubber plug at the lower end of a movable iron core in the upper cover of the valve body.

Preferably, the valve body is provided with a liquid inlet and a liquid outlet, and a liquid sealing port for separating the liquid inlet from the liquid outlet is fixed on the outer side of the central column.

Preferably, the liquid sealing port and the valve body are integrally formed.

Preferably, the liquid inlet and the liquid outlet are arranged in a side liquid inlet, a lower liquid outlet or a back liquid inlet, a lower liquid outlet or a side liquid inlet and a side liquid outlet.

Preferably, the movable iron core is sleeved with a spring, and the spring and the movable iron core are clamped on the inner side of the upper cover of the valve body.

Preferably, a static iron core is arranged at a position above the valve body upper cover corresponding to the movable iron core, a permanent magnet is arranged at the upper end of the static iron core, and the permanent magnet and the outer side of the valve body upper cover are tightly sealed through an upper gland yoke piece; a cavity for placing an electromagnetic coil is formed between the valve body upper cover and the upper gland yoke piece, and the electromagnetic coil is wound on the outer side of the valve body upper cover.

Preferably, the diameter of the upper part of the central hole of the pilot membrane is smaller than or equal to the diameter of the lower part.

Preferably, the center post is integrally formed with the valve body or is in close fit with the valve body.

Preferably, a center post outer sleeve which is tightly matched with the center post is arranged on the outer side of the center post, and the center post outer sleeve is fixedly connected with the valve body through a link rib plate.

The invention also discloses an ultrashort-stroke ultralow-power-consumption self-holding pilot-operated electromagnetic valve component, which comprises two or more electromagnetic valves in the claims 1-9, wherein a liquid inlet is shared between the electromagnetic valves.

After the structure is adopted, the electromagnetic valve not only realizes the self-holding function (namely the electromagnetic coil is electrified when in work and is not electrified when not in work), but also realizes that the pressure relief hole does not move along with the pilot membrane, the working distance of the movable iron core is very short, and the electromagnetic valve can work under ultra-low pulse and ultra-low power, so that the consumption of electric energy can be greatly reduced, and the electromagnetic valve can work for an ultra-long time even if a battery is used for supplying power to the electromagnetic valve.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a sectional view of a solenoid valve closed according to an embodiment of the present invention.

Fig. 2 is a sectional view of an opened solenoid according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a second solenoid valve of an embodiment of the present invention as closed.

Fig. 4 is an enlarged schematic view of a valve body and a pilot diaphragm according to an embodiment of the invention.

Fig. 5 is an enlarged schematic view of a valve body and a pilot diaphragm according to an embodiment of the present invention.

Fig. 6 is an enlarged schematic view of a pilot diaphragm according to an embodiment of the invention.

Fig. 7 is an enlarged schematic view of a pilot diaphragm according to a second embodiment of the present invention.

FIG. 8 is a schematic diagram of a third structure according to an embodiment of the present invention.

FIG. 9 is a schematic diagram of a third structure according to an embodiment of the present invention.

Fig. 10 is a schematic structural diagram of a fourth embodiment of the present invention.

Fig. 11 is a schematic structural diagram of a fourth embodiment of the present invention.

In the figure: 1 is a valve body, 2 is a guide film, 3 is an electromagnetic valve head, 4 is a liquid inlet, 5 is a liquid outlet,

1-1 is a linking rib plate, 1-2 is a central column, 1-3 is a pressure relief hole, 1-4 is a liquid sealing port, and 1-5 is a central column jacket

2-1 is a pilot hole, 2-2 is a central hole of a pilot membrane,

3-1 is a valve body upper cover, 3-2 is an electromagnetic coil, 3-3 is a rubber plug, 3-4 is a movable iron core, 3-5 is a spring, 3-6 is a static iron core, 3-7 is a permanent magnet, and 3-8 is an upper gland yoke integrated piece.

Detailed Description

As shown in fig. 1-3, the ultrashort-stroke ultralow-power-consumption self-sustaining pilot-operated solenoid valve comprises a solenoid valve head 3, a valve body 1 and a pilot membrane 2, wherein the solenoid valve head 3 comprises a valve body upper cover 3-1, the periphery of the pilot membrane 2 is tightly pressed and hermetically installed between the valve body 1 and the valve body upper cover 3-1, a cavity between the valve body 1 and the valve body upper cover 3-1 is divided into an upper cavity and a lower cavity, and the pilot membrane 2 is provided with a plurality of pilot holes 2-1 for communicating the upper cavity with the lower cavity. A central column 1-2 is fixed between the upper cavity and the lower cavity, and a central hole 2-2 of the pilot membrane is sleeved on the central column 1-2, sealed and capable of moving up and down along the central column 1-2. The central column 1-2 is fixed in the valve body 1 through a plurality of linking rib plates 1-1, and one or more linking rib plates 1-1 can be provided. The central column 1-2 is provided with a hollow pressure relief hole 1-3, the top end of the central column 1-2 corresponds to a rubber plug 3-3 at the lower end of a movable iron core 3-4 in a valve body upper cover 3-1, and the corresponding meaning is that the valve is contacted with the central column when closed and is not contacted with the central column when closed. A central column 1-2 of the valve body 1 penetrates through a central hole 2-2 of a pilot membrane, the central hole 2-2 of the pilot membrane is sleeved on the central column 1-2, and the central part of the pilot membrane can move up and down along the central column 1-2 along with the opening and closing of a valve. As shown in fig. 6 and 7, in order to reduce friction force and achieve sealing, the diameter of the upper part of the central hole 2-2 of the pilot membrane is smaller than or equal to that of the lower part. In the present embodiment, as shown in fig. 1 and 2, in the first embodiment of the present application, the center post 1-2 may be integrally formed of the same material as the valve body. As shown in fig. 3, of course, the center post 1-2 may also be separately opened from the valve body in the second embodiment, and be made of the same or different materials, and be tightly fitted with the valve body (specifically, a center post outer sleeve 1-5 tightly fitted with the center post 1-2 is disposed on the outer side of the center post 1-2, and the center post outer sleeve 1-5 is fixedly connected with the valve body 1 through a linking rib plate 1-1). The tight fit here may be an interference fit, so that there is no gap between the center post 1-2 and the valve body, ensuring that liquid flows out of the relief hole 1-3 of the center post 1-2.

As shown in fig. 1-3 and 4-5, a liquid inlet 4 and a liquid outlet 5 are formed in the valve body 1, and a liquid sealing port 1-4 for separating the liquid inlet 4 from the liquid outlet 5 is fixed on the outer side of the central column 1-2. In order to ensure the sealing performance and the firmness of the whole liquid sealing ports 1-4, the liquid sealing ports 1-4 are integrally formed with the valve body 1.

As shown in fig. 1-3, a spring 3-5 is sleeved outside the movable iron core 3-4, and the spring 3-5 and the movable iron core 3-4 are clamped inside the upper cover 3-1 of the valve body (the clamping is that the upper end of the movable iron core 3-4 is set as a T-shaped step surface, and the spring 3-5 is installed on the step surface). A static iron core 3-6 is arranged at a position, corresponding to the movable iron core 3-4, above the valve body upper cover 3-1, a permanent magnet 3-7 is arranged at the upper end of the static iron core 3-6, and the permanent magnet 3-7 and the outer side of the valve body upper cover 3-1 are tightly sealed through an upper gland yoke integrated piece 3-8; a cavity for placing the electromagnetic coil 3-2 is formed between the valve body upper cover 3-1 and the upper gland yoke integrated piece 3-8, and the electromagnetic coil 3-2 is wound on the outer side of the valve body upper cover 3-1. In order to simplify the structure, facilitate the processing, reduce the volume and reduce the cost, the invention 2 uses the function sharing or multiple of the part: firstly, the valve body upper cover 3-1 is not only a valve body upper cover but also a seat frame of the electromagnetic valve head, not only plays a role of placing a permanent magnet, a static iron core, a spring, a movable iron core and the like, but also plays a role of a bracket of the electromagnetic coil, and is multipurpose at one stroke; secondly, the upper gland and yoke integrated piece 3-8 not only has the function of realizing the pilot valve sealing by the upper gland of the electromagnetic valve head and compressing the valve body and the upper cover, but also has the function of the yoke of the electromagnetic valve head.

The invention adopts the mode that the central column 1-2 contains the pressure relief holes 1-3, and the moving distance of the movable iron core 3-4 is very short (1-2 mm or even shorter distance can be used in practice) because the central column does not move. The structure not only reduces the distance between the movable iron core and the pressure relief hole, but also reduces the distance between the movable iron core and the static iron core, and simultaneously reduces the elasticity of the spring 3-5, thereby achieving three purposes. Due to the adoption of the structure, the ultra-short stroke is realized, the spring force is reduced, the size and the number of turns of the electromagnetic coil can be reduced to a great extent, the consumption of electric energy is reduced, energy conservation and environmental protection are realized, and the electromagnetic valve can work for an ultra-long time (the battery is not replaced for a longer time) even if the battery is used for supplying power to the electromagnetic valve.

The working principle of the invention is as follows:

as shown in fig. 1: when the pulse electromagnetic coil 3-2 is electrified in the positive direction, the movable iron core 3-4 approaches to the central column 1-2 and is tightly pressed on the pressure relief hole 1-3 under the action of the spring 3-5, and the guide film moves downwards along the central column 1-2 under the action of liquid pressure and is tightly pressed on the liquid sealing port 1-4. At the moment, liquid enters from the liquid inlet, enters the upper cavity through the guide hole 2-1, and presses the guide membrane 2 on the liquid sealing port 1-4 under the action of liquid pressure, and the valve is closed at the moment.

As shown in fig. 2: when the pulse electromagnetic coil 3-2 is reversely electrified, the movable iron core 3-4 approaches to the static iron core 3-6 and is tightly absorbed at the position of the isolation structure under the action of magnetic attraction to keep still, the spring 3-5 is contracted and compressed under the action of pressure, the movable iron core 3-4 is away from the pressure release hole 1-3 for a certain short distance, and the guide film moves upwards along the central column 1-2 under the action of liquid pressure and is away from the unsealing liquid port 1-4 for a certain distance. At the moment, liquid enters from the liquid inlet 4, a small part of liquid enters the upper cavity through the pilot hole 2-1 and flows out from the liquid outlet 5 through the pressure relief hole 1-3; most liquid enters from the liquid inlet, passes through the lower cavity, passes through the gap between the guide membrane and the liquid sealing port 1-4, and flows out from the liquid outlet, and at the moment, the valve is opened.

The valve head structure, namely the self-holding electromagnetic valve head part, can not only adopt the form shown in the figure of the invention, but also adopt other forms, as long as the function can realize the self-holding of the position of the movable iron core after the opening and closing actions of the movable iron core.

Of course, the valve body structure of the present invention may adopt the structural forms of the side liquid inlet 4 and the lower liquid outlet 5 as shown in fig. 1-3 and fig. 4-5, and may also adopt the structural forms of the back liquid inlet 4 and the lower liquid outlet 5 as shown in fig. 8-9 or the side liquid inlet 4 and the side liquid outlet 5 as shown in fig. 10-11; such variations in the valve body structure are within the scope of this patent.

The invention also discloses an ultrashort-stroke ultralow-power-consumption self-holding pilot-operated electromagnetic valve component which comprises two or more electromagnetic valves, wherein a liquid inlet is shared between the electromagnetic valves, so that liquid is fed into one pipeline, liquid is discharged from a plurality of pipe orifices, and a set of valves is used for controlling the plurality of pipelines.

Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are merely examples and that many variations or modifications may be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims.