CN217502664U

CN217502664U - Direct-acting stop type electromagnetic valve for portable oxygenerator

Info

Publication number: CN217502664U
Application number: CN202220963368.8U
Authority: CN
Inventors: 单忠元
Original assignee: Ningbo Aierken Pneumatic Equipment Co ltd
Current assignee: Ningbo Aierken Pneumatic Equipment Co ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-09-27
Anticipated expiration: 2032-04-25

Abstract

The utility model relates to a direct-acting stop-type electromagnetic valve for a portable oxygenerator, which comprises a valve body and a pilot head component, wherein a valve cavity is arranged in the valve body, a first gas port, a second gas port and a third gas port which are communicated with the valve cavity are arranged on the valve body, a movable valve rod is arranged in the valve cavity, the pilot head component comprises a coil component, the movable iron core is fixedly connected with the valve body, the movable iron core is movably arranged between the static iron core and the valve body, the movable iron core spring is abutted between the static iron core and the movable iron core, the movable iron core is fixedly connected with the valve rod, a first valve port and a second valve port are arranged in the valve cavity, the first valve port is positioned between the first gas port and the second gas port, the second valve port is positioned between the second gas port and the third gas port, a sealing head is fixedly arranged on the valve rod, and the sealing head is positioned between the first valve port and the second valve port. The utility model discloses compact size is small and exquisite, and noise at work is low.

Description

Direct-acting stop type electromagnetic valve for portable oxygenerator

Technical Field

The utility model relates to the technical field of an electromagnetic valve of an oxygen generator, in particular to a direct-acting stop type electromagnetic valve for a portable oxygen generator.

Background

The oxygen-making electromagnetic valve is an indispensable part of the oxygen making machine, and the operation capacity of the oxygen-making electromagnetic valve directly determines the oxygen making capacity of the whole oxygen making machine. At present, the oxygen generation electromagnetic valve generally has two types of direct-acting stop type and diaphragm type, and compared with the diaphragm type oxygen generation electromagnetic valve, the direct-acting stop type oxygen generation electromagnetic valve has the advantages of longer service life and more compact and small volume. The common oxygen-making solenoid valve among the prior art, no matter directly move ending formula or diaphragm formula, the iron core that moves among its guide head subassembly is when receiving electromagnetic force drive motion, moves and can send great metal impact sound because of the collision between iron core and the quiet iron core, causes whole solenoid valve to produce great noise at the course of the work, causes serious noise pollution to the surrounding environment, especially disturbs patient's rest under the indoor environment night.

SUMMERY OF THE UTILITY MODEL

To the defect of prior art, the utility model provides a portable oxygenerator is with directly moving by formula solenoid valve effectively solves the not enough of prior art.

In order to achieve the above purpose, the utility model discloses the technical scheme who uses as follows:

a direct-acting cut-off electromagnetic valve for a portable oxygenerator comprises a valve body and a pilot head assembly arranged on the valve body, wherein a valve cavity is arranged in the valve body, a first gas port, a second gas port and a third gas port which are respectively communicated with the valve cavity are arranged on the valve body, a movable valve rod is arranged in the valve cavity, the pilot head assembly comprises a coil assembly, a static iron core, a movable iron core and a movable iron core spring, the coil assembly is fixedly connected with the valve body, the static iron core is fixed in the coil assembly, the movable iron core is movably arranged between the static iron core and the valve body, the movable iron core spring is abutted between the static iron core and the movable iron core, the movable iron core spring has a movement trend that the movable iron core is always away from the static iron core, the movable iron core is fixedly connected with the valve rod, a first valve port and a second valve port are arranged in the valve cavity, the first valve port is positioned between the first gas port and the second gas port, and the third gas port are arranged in the valve cavity, the valve rod is fixedly provided with a sealing head, the sealing head is positioned between the first valve port and the second valve port, the sealing head moves synchronously along with the valve rod and is used for being in sealing fit with the first valve port or the second valve port, and the stroke of the sealing head is smaller than the maximum axial distance between the movable iron core and the static iron core.

According to the scheme, the movable iron core and the valve rod are integrally formed.

According to the scheme, the areas of the upper end face and the lower end face of the sealing head, which are respectively contacted with the gas in the valve cavity, are equal.

According to the scheme, the upper spacer bush and the lower spacer bush are respectively and fixedly arranged in the valve cavity along the axial direction, the upper spacer bush and the lower spacer bush are respectively sleeved between the valve rod and the valve body, the outer wall of the upper spacer bush and the outer wall of the lower spacer bush are respectively in sealing fit with the inner wall of the valve body, the first valve port is arranged on the lower spacer bush, and the second valve port is arranged on the upper spacer bush.

According to the scheme, the coil assembly is provided with the control chip, and the control chip is electrically connected with the coil assembly.

The utility model discloses beneficial effect:

the utility model discloses a direct-acting is by formula design, and is small in size, through moving iron core and valve rod fixed connection, and make the stroke of sealed head be less than and move the maximum axial interval between iron core and the quiet iron core, make when the valve rod drives sealed head axial displacement in the valve pocket in order to carry out the gas circuit and switch over, move the iron core and can not bump with quiet iron core all the time, thereby effectively reduced noise at work, ensured can not cause serious noise pollution to the surrounding environment, especially under the indoor environment at night, can ensure patient's normal rest.

Drawings

Fig. 1 is a cross-sectional view of the overall structure of the present invention.

1. A valve body; 2. a pilot head assembly; 3. a first gas port; 4. a second gas port; 5. a third gas port; 6. a valve stem; 7. a coil assembly; 8. a stationary iron core; 9. a movable iron core; 10. a movable iron core spring; 11. a control chip; 12. a first valve port; 13. a second valve port; 14. arranging a spacer bush; 15. a lower spacer bush; 16. a sealing head; 17. the valve cavity.

Detailed Description

The technical solution of the present invention will be described below with reference to the accompanying drawings and examples.

As shown in figure 1, the utility model relates to a direct-acting cut-off type electromagnetic valve for a portable oxygenerator, which comprises a valve body 1 and a pilot head component 2 arranged on the valve body 1, a valve cavity 17 is arranged in the valve body 1, a first air port 3, a second air port 4 and a third air port 5 which are respectively communicated with the valve cavity 17 are arranged on the valve body 1, a movable valve rod 6 is arranged in the valve cavity 17, the pilot head component 2 comprises a coil component 7, a static iron core 8, a movable iron core 9 and a movable iron core spring 10, the coil component 7 is fixedly connected with the valve body 1, the static iron core 8 is fixed in the coil component 7, the movable iron core 9 is movably arranged between the static iron core 8 and the valve body 1, the movable iron core spring 10 is abutted between the static iron core 8 and the movable iron core 9, the movable iron core spring 10 has a movement tendency that the movable iron core 9 is always away from the static iron core 8, the movable iron core 9 is fixedly connected with the valve rod 6, a first valve port 12 and a second valve port 13 are arranged in the valve cavity 17, the first valve port 12 is located between the first air port 3 and the second air port 4, the second valve port 13 is located between the second air port 4 and the third air port 5, the valve rod 6 is fixedly provided with the sealing head 16, the sealing head 16 is located between the first valve port 12 and the second valve port 13, the sealing head 16 moves synchronously with the valve rod 6 and is used for being in sealing fit with the first valve port 12 or the second valve port 13, and the stroke of the sealing head 16 is smaller than the maximum axial distance between the movable iron core 9 and the static iron core 8. The above structure is the basic structure of the utility model.

The utility model discloses an adopt and directly move the design of formula by, compact size is small and exquisite, through moving

iron core

9 and 6 fixed connection of valve rod, and make the stroke of sealed head 16 be less than and move the biggest axial interval between iron core 9 and quiet iron core 8, make when valve rod 6 drives sealed head 16 axial displacement in valve pocket 17 in order to carry out the gas circuit and switch, it can not collide with quiet iron core 8 all the time to move iron core 9, thereby effectively reduced noise at work, ensured not to cause serious noise pollution to the surrounding environment, especially under the indoor environment at night, can ensure patient's normal rest.

The working principle is as follows: in the in-service use in-process, second gas port 4 is as the gas outlet, and first gas port 3 and third gas port 5 can exchange the use, and when first gas port 3 used as the air inlet promptly, third gas port 5 just regarded as the gas vent, and this solenoid valve is the normal close formula this moment, and when first gas port 3 used as the gas vent, third gas port 5 just regarded as the air inlet, and this solenoid valve is the normal open type this moment.

The principle of gas circuit switching is as follows: in an initial state, the sealing head 16 is in sealing contact with the first valve port 12, and the sealing head 16 is in clearance fit with the second valve port 13, that is, the first valve port 12 is closed, the second valve port 13 is opened, at this time, the first valve port 3 and the second valve port 4 are in a cut-off state, and the second valve port 4 and the third valve port 5 are in a conduction state, when the coil assembly 7 is energized and generates an electromagnetic attraction force, the plunger 9 drives the sealing head 16 to move upwards through the valve rod 6, so that the sealing head 16 is separated from the first valve port 12 and then is in sealing contact with the second valve port 13, that is, the first valve port 12 is opened, the second valve port 13 is closed, at this time, the first valve port 3 and the second valve port 4 are in a conduction state, and the second valve port 4 and the third valve port 5 are in a cut-off state, when the coil assembly 7 is de-energized, the plunger 10 drives the plunger 9, the valve rod 6 and the sealing head 16 to reset, and the first air port 3 and the second air port 4 are in a cut-off state again, and the second air port 4 and the third air port 5 are in a conduction state again, and the air path switching action is completed in this way.

In this embodiment, the plunger 9 is integrally formed with the valve stem 6. By adopting the structure, the processing is convenient, the number of parts is reduced, and the assembly efficiency is more favorably improved.

In this embodiment, the areas of the upper end surface and the lower end surface of the sealing head 16, which are respectively in contact with the gas in the valve chamber 17, are equal. By adopting the structure, the valve rod 6 is ensured not to be influenced by the gas pressure in the valve cavity 17 when the valve rod moves, namely, the valve rod 6 is free of back pressure design, so that the movement of the valve rod 6 is only influenced by the elasticity of the movable iron core spring 10 and the electromagnetic attraction of the coil assembly 7, the movement sensitivity is higher, and the response speed is faster.

In the actual production process, the caliber of the first valve port 12 and the caliber of the second valve port 13 can be made as large as possible by the design without back pressure, so that the use requirement of large flow is met.

In this embodiment, an upper spacer 14 and a lower spacer 15 are respectively and fixedly disposed in the valve cavity 17 along the axial direction, the upper spacer 14 and the lower spacer 15 are respectively sleeved between the valve rod 6 and the valve body 1, an outer wall of the upper spacer 14 and an outer wall of the lower spacer 15 are respectively in sealing fit with an inner wall of the valve body 1, the first valve port 12 is disposed on the lower spacer 15, and the second valve port 13 is disposed on the upper spacer 14. By adopting the structure, the first valve port 12 and the second valve port 13 can be processed more conveniently, and the processing difficulty and the production cost can be reduced.

In this embodiment, the coil assembly 7 is provided with a control chip 11, and the control chip 11 is electrically connected to the coil assembly 7. By adopting the structure, the control chip 11 is subjected to circuit and programming design, and the working efficiency of the coil assembly 7 can be effectively controlled and reduced by utilizing the control chip 11, so that the effect of saving energy consumption is achieved.

It should be noted that the circuit and programming design of the control chip 11 belongs to the prior art, and therefore, the detailed description thereof is omitted.

The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, and these forms are within the scope of the present invention.

Claims

1. The utility model provides a portable oxygenerator is with directly moving by formula solenoid valve, includes valve body (1) and locates guide head subassembly (2) on valve body (1), be equipped with valve pocket (17) in valve body (1), be equipped with first gas port (3), second gas port (4) and third gas port (5) that are linked together with valve pocket (17) respectively on valve body (1), be equipped with mobilizable ground valve rod (6) in valve pocket (17), guide head subassembly (2) include coil pack (7), quiet iron core (8), movable iron core (9) and movable iron core spring (10), coil pack (7) and valve body (1) fixed connection, quiet iron core (8) are fixed in coil pack (7), movable iron core (9) are located between quiet iron core (8) and valve body (1), movable iron core spring (10) are to locating between quiet iron core (8) and movable iron core (9), and the movable iron core spring (10) has the movement trend that the movable iron core (9) is always far away from the static iron core (8), and is characterized in that: the movable iron core (9) is fixedly connected with the valve rod (6), a first valve port (12) and a second valve port (13) are arranged in the valve cavity (17), the first valve port (12) is positioned between the first air port (3) and the second air port (4), the second valve port (13) is positioned between the second air port (4) and the third air port (5), a sealing head (16) is fixedly arranged on the valve rod (6), the sealing head (16) is positioned between the first valve port (12) and the second valve port (13), the sealing head (16) synchronously moves along with the valve rod (6) and is used for being in sealing fit with the first valve port (12) or the second valve port (13), and the stroke of the sealing head (16) is smaller than the maximum axial distance between the movable iron core (9) and the static iron core (8).

2. The direct-acting cut-off electromagnetic valve for the portable oxygenerator as recited in claim 1, wherein: the movable iron core (9) and the valve rod (6) are integrally formed.

3. The direct-acting cut-off electromagnetic valve for the portable oxygenerator as recited in claim 1, wherein: the upper end surface and the lower end surface of the sealing head (16) are respectively equal to the contact area of the gas in the valve cavity (17).

4. The direct-acting cut-off electromagnetic valve for the portable oxygenerator as recited in claim 1, wherein: an upper spacer bush (14) and a lower spacer bush (15) are respectively and fixedly arranged in the valve cavity (17) along the axial direction, the upper spacer bush (14) and the lower spacer bush (15) are respectively sleeved between the valve rod (6) and the valve body (1), the outer wall of the upper spacer bush (14) and the outer wall of the lower spacer bush (15) are respectively in sealing fit with the inner wall of the valve body (1), the first valve port (12) is arranged on the lower spacer bush (15), and the second valve port (13) is arranged on the upper spacer bush (14).

5. The direct-acting cut-off electromagnetic valve for the portable oxygenerator as recited in claim 1, wherein: the coil component (7) is provided with a control chip (11), and the control chip (11) is electrically connected with the coil component (7).