CN220850967U

CN220850967U - Electromagnetic pneumatic reversing valve of oxygenerator

Info

Publication number: CN220850967U
Application number: CN202322803890.7U
Authority: CN
Inventors: 于宗清
Original assignee: Shenyang Honglian Precision Instrument Co ltd
Current assignee: Shenyang Honglian Precision Instrument Co ltd
Priority date: 2023-10-19
Filing date: 2023-10-19
Publication date: 2024-04-26
Anticipated expiration: 2033-10-19

Abstract

The utility model discloses an electromagnetic pneumatic reversing valve of an oxygenerator, which is mainly technically characterized in that: the bottom of the movable iron core of the coil pilot head assembly is provided with a guide sleeve, a sealing plug is arranged in the guide sleeve, the bottom of the guide sleeve is provided with a first sliding end and a second sliding end, a high-pressure air inlet channel is arranged in a valve seat and starts from the high-pressure air inlet and stops at a boss body at the upper end of the valve seat, two sides of the boss body are respectively provided with a first sliding cavity and a second sliding cavity, and an elastic sealing assembly is arranged in the second sliding cavity. The beneficial effects are that: the gas in the high-pressure gas inlet channel is refracted by the sealing plug so as to prevent the gas from being detained, thus improving the working efficiency and relieving the working noise, the gas in the high-pressure gas inlet channel is refracted by the sealing plug without the lengthy opening stroke of a diaphragm, thus improving the working efficiency, and the structures of the first sliding cavity, the second sliding cavity and the guide sleeve replace the valve core component in the long rod shape in the prior art, thus realizing the miniaturization structure of the valve body, reducing the volume and saving the production cost.

Description

Electromagnetic pneumatic reversing valve of oxygenerator

Technical Field

The utility model relates to the technical field of electromagnetic pneumatic reversing valves, in particular to an electromagnetic pneumatic reversing valve of an oxygen generator.

Background

For the electromagnetic pneumatic reversing valve of the oxygenerator, the product has small volume, high working efficiency and low noise, and is the current development trend.

In the prior art, as disclosed in Chinese patent publication No. CN212804497U, a novel pilot pneumatic reversing valve for a household oxygenerator is disclosed, a coil pilot head assembly is adopted, and a convex frustum is pressed by a sealing plug through the power-off state of the coil pilot head assembly, so that an inner hole channel is closed. A spring in the main valve body pushes the valve core assembly to move downwards, and the sealing gasket 4 presses the convex ring table of the inner end sealing cover to close the exhaust cavity. The high-pressure gas enters the upper cavity of the inner cavity of the shell through the high-pressure gas channel interface and is conveyed to the molecular sieve tank through the molecular sieve interface, the high-pressure makes the molecular sieve produce adsorption effect, and nitrogen is adsorbed and oxygen is extracted and conveyed to the oxygen storage tank.

Through the circular telegram state of coil guide head subassembly, fixed iron core of coil one side produces magnetic force and attracts the iron core and overcome the spring for sealed stifled protruding frustum that leaves opens the hole passageway, advances high-pressure chamber through countersunk hole gas, promotes diaphragm oppression pressure disk and makes case subassembly overcome spring force, leaves sealed pad and seals the protruding ring platform of end cap in, opens the exhaust chamber, discharges nitrogen gas through the exhaust interface, closes high-pressure chamber simultaneously.

Because this kind of structure has set up the diaphragm, and the diaphragm passes through base and last casing to be connected, because the outward flange of diaphragm is connected fixedly by base and last casing, when so gaseous jack-up diaphragm, gaseous needs to be detained for a moment between base and diaphragm, causes short time delay, so there is the work efficiency that the gas detained and leads to low. When the air pressure can make the center of the diaphragm jack up the pressure plate, the noise of the air flow is relatively larger. When the power is off, the pressure plate instantaneously drops back to contact with the diaphragm due to the action of no air pressure, and noise is generated. Therefore, the structure still has the improvement and optimization.

In addition, since the outer edge of the diaphragm is fixedly connected with the base and the upper housing, and the coil pilot head assembly is arranged on the base, the volume structure is huge, and therefore, space for optimizing the volume is still reserved.

In summary, the application provides an electromagnetic pneumatic reversing valve of an oxygenerator.

Disclosure of utility model

The utility model aims to overcome the defects in the prior art and provides an electromagnetic pneumatic reversing valve of an oxygen generator.

In order to overcome the technical problems, the utility model adopts the following technical scheme:

including the valve body that is provided with molecular sieve system oxygen nitrogen removal interface, be provided with disk seat and the first subassembly of coil guide of nitrogen gas main vent and high pressure inlet, its characterized in that: the coil guide head assembly comprises a coil guide head assembly, a coil guide head assembly and a valve seat, wherein a guide sleeve is arranged at the bottom end of a movable iron core of the coil guide head assembly, a sealing plug is arranged in the guide sleeve, a first sliding end and a second sliding end are arranged at the bottom of the guide sleeve, a high-pressure air inlet channel is arranged in the valve seat, the high-pressure air inlet channel starts at a high-pressure air inlet and is stopped at a boss body at the upper end of the valve seat, and a first sliding cavity for placing the first sliding end of the guide sleeve and a second sliding cavity for placing the second sliding end of the guide sleeve are respectively arranged at two sides of the boss body.

Further, the nitrogen main through hole is communicated with the second sliding cavity.

Further, the molecular sieve oxygen-making and nitrogen-discharging interface is communicated with the inner cavity of the valve body.

Further, the sliding device also comprises an elastic sealing assembly arranged in the second sliding cavity.

Further, the elastic sealing assembly comprises a rubber plug, a spring seat arranged at the bottom end of the second sliding cavity of the valve seat, and a spring, one end of which is connected with the spring seat, the other end of which is connected with the rubber plug, and the spring seat is fixedly connected with the bottom end of the second sliding cavity.

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

The gas in the high-pressure air inlet channel is refracted by the sealing plug so that the gas is not detained, thereby improving the working efficiency and relieving the working noise.

And secondly, compared with the diaphragm in the prior art, the gas in the high-pressure gas inlet channel is refracted through the sealing plug, and the lengthy opening stroke of the diaphragm is not needed, so that the working efficiency is improved.

And thirdly, the structures of the first sliding cavity, the second sliding cavity and the guide sleeve replace a valve core component in a long rod shape in the prior art, so that the miniaturized structure of the valve body is realized, the volume of the valve body is reduced, and the production cost is saved.

Drawings

The utility model is described in further detail below with reference to the drawings and the detailed description.

FIG. 1 is a front view of the present utility model;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a left side view of FIG. 1;

FIG. 4 is a rear view of FIG. 1;

FIG. 5 is an isometric view of FIG. 1;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 1, the structure being shown in an internal configuration with the coil lead head assembly in an energized state;

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 1, the structure being shown in an internal configuration of the coil lead head assembly in a de-energized state;

FIG. 8 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 9 is a cross-sectional view taken along line C-C of FIG. 2, the structure being shown in the internal configuration of the coil lead head assembly in an energized state;

FIG. 10 is a cross-sectional view taken along line C-C of FIG. 2, the structure being shown in the internal configuration of the coil lead head assembly in a de-energized state;

FIG. 11 is an enlarged partial view of region D of FIG. 6;

Fig. 12 is a partial enlarged view of the region E shown in fig. 7.

Reference numerals illustrate:

1. preparing oxygen and nitrogen interfaces by using molecular sieves; 2. a valve body; 3. a nitrogen main port; 4. a high pressure air inlet; 5. a valve seat;

6. A coil lead head assembly; 601. a movable iron core; 602. a guide sleeve; 603. sealing and plugging; 604. a first slide end; 605. a second slide end; 7. a high pressure air intake passage; 8. a boss body; 9. a first sliding cavity;

10. A second sliding cavity; 11. an elastic sealing assembly; 11-1, spring seats; 11-2, a spring; 11-3, glue blocking;

607. A coil module; 608. a conical spring; 609. a guide groove; 610. a nitrogen auxiliary port; 611. fixing an iron core;

Detailed Description

As shown in fig. 1-12, an electromagnetic pneumatic reversing valve of an oxygenerator is disclosed, which comprises a valve body 2 provided with a molecular sieve oxygen-making and nitrogen-discharging interface 1, a valve seat 5 provided with a nitrogen main through port 3 and a high-pressure air inlet 4, and a coil pilot head assembly 6, wherein the valve seat 5 is provided with: the boss body 8, the high-pressure air inlet channel 7, the first sliding cavity 9 and the second sliding cavity 10.

The bottom of the movable iron core 601 of the coil pilot head assembly 6 is provided with a guide sleeve 602, a sealing plug 603 is arranged in the guide sleeve 602, the bottom of the guide sleeve 602 is provided with a first sliding end 604 and a second sliding end 605, as shown in fig. 7-10, a high-pressure air inlet channel 7 is arranged in the valve seat 5, the high-pressure air inlet channel 7 starts from the high-pressure air inlet 4 and is stopped at a boss body 8 at the upper end of the valve seat 5, two sides of the boss body 8 are respectively provided with a first sliding cavity 9 for placing the first sliding end 604 of the guide sleeve 602 and a second sliding cavity 10 for placing the second sliding end 605 of the guide sleeve 602, and an elastic sealing assembly 11 is arranged in the second sliding cavity 10.

As shown in fig. 6-7, the nitrogen main through port 3 is communicated with the second sliding cavity 10, and the molecular sieve oxygen-making and nitrogen-removing interface 1 is communicated with the inner cavity of the valve body 2.

As shown in fig. 11 or 12, the elastic sealing assembly 11 includes a rubber plug 11-3, a spring seat 11-1 disposed at the bottom end of the second sliding cavity 10 of the valve seat 5, and a spring 11-2 having one end connected to the spring seat 11-1 and the other end connected to the rubber plug 11-3, and the spring seat 11-1 is fixedly connected to the bottom end of the second sliding cavity 10 by ultrasonic welding.

As can be seen from fig. 7, 10 and 12, when the coil pilot head assembly 6 is powered off, the coil module 607 in the coil 606 of the coil pilot head assembly 6 is powered off, and the movable iron core 601 presses the boss body 8 under the action of the conical spring 608 to close the high-pressure air inlet channel 7; the movable core 601 is separated from the fixed core 611 and a gap is generated; simultaneously, the first sliding end 604 of the guide sleeve 602 slides downwards in the first sliding cavity 9 of the valve seat 5, the second sliding end 605 of the guide sleeve 602 slides downwards in the second sliding cavity 10 of the valve seat 5, when the second sliding end 605 of the guide sleeve 602 contacts with the rubber plug 11-3 in the elastic sealing assembly 11, the spring 11-2 adsorbs collision noise generated when the second sliding end 605 contacts with the rubber plug 11-3, the spring 11-2 compresses downwards to enable the rubber plug 11-3 to move downwards, at the moment, the nitrogen main through hole 3 is opened, and part of gas of the molecular sieve oxygen-making and nitrogen-discharging interface 1 is discharged from the nitrogen main through hole 3 to the silencer after passing through the inner cavity of the valve body 2; the other part of the gas of the molecular sieve oxygen-making and nitrogen-discharging interface 1 passes through the inner cavity of the valve body 2 and reaches the gap between the fixed iron core 611 and the movable iron core 601 along the guide groove 609 arranged on the movable iron core 601, and is discharged to the silencer through the nitrogen auxiliary through hole 610 arranged in the fixed iron core 611 of the coil pilot head assembly 6.

As can be seen from fig. 6, fig. 9 and fig. 11, when the coil pilot head assembly 6 is energized, the coil module 607 in the coil 606 of the coil pilot head assembly 6 is energized to make the movable iron core 601 and the fixed iron core 611 be attracted, the gap between the movable iron core 601 and the fixed iron core 611 is closed, the nitrogen auxiliary through hole 610 is in a non-conductive state, the movable iron core 601 makes the guide sleeve 602 and the sealing plug 603 move upwards under the action of the conical spring 608, the first sliding end 604 of the guide sleeve 602 slides upwards in the first sliding cavity of the valve seat 5, the second sliding end 605 of the guide sleeve 602 slides upwards in the second sliding cavity 10 of the valve seat 5, when the second sliding end 605 of the guide sleeve 602 is separated from the sealing plug 11-3 in the elastic sealing assembly 11, the spring 11-2 is used for assisting to push the second sliding end 605 of the guide sleeve 602, at this moment, the sealing plug 11-3 closes the nitrogen main through hole 3, the sealing plug 603 is separated from the boss 8, the high pressure inlet channel 7 enters the high pressure inlet channel 7, the high pressure channel 4 enters the high pressure channel 2, and is exhausted into the inner cavity of the oxygen storage tank, and the molecular sieve is adsorbed by the high pressure channel 2, and the molecular sieve is pumped into the inner cavity of the oxygen storage tank, and the molecular sieve is pumped into the inner cavity of the molecular sieve after the high pressure channel 1 is pumped by the high pressure channel and the oxygen channel is pumped into the oxygen channel through the high pressure channel.

Compared with the prior art, the gas in the high-pressure gas inlet channel 7 is refracted by the sealing plug 603, so that the gas is not detained, the working efficiency is improved, and the working noise is relieved. Meanwhile, compared with the diaphragm in the prior art, the gas in the high-pressure gas inlet channel 7 is refracted through the sealing plug 603, and the lengthy opening stroke of the diaphragm is not needed, so that the working efficiency is improved; the first sliding chamber 9, the second sliding chamber 10 and the guide sleeve 602 replace the valve core component with a long rod shape in the prior art, so that the miniaturization structure of the valve body 2 in the embodiment is realized, the volume of the valve body is reduced, and the production cost is saved.

The utility model is not limited to the precise construction which has been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims

1. The utility model provides an oxygenerator electromagnetic pneumatic reversing valve, is including valve body (2) that are provided with molecular sieve oxygen production nitrogen removal interface (1), disk seat (5) that are provided with nitrogen gas main through-hole (3) and high-pressure inlet (4), and coil first subassembly (6), its characterized in that: the coil is leading iron core (601) of first subassembly (6) the bottom set up uide bushing (602), set up sealed shutoff (603) in uide bushing (602), the bottom of uide bushing (602) sets up first slip end (604), second slip end (605), set up high-pressure air inlet channel (7) in disk seat (5), high-pressure air inlet channel (7) start in high-pressure air inlet (4) and end boss body (8) in disk seat (5) upper end, the both sides of boss body (8) set up first slip chamber (9) that are used for placing first slip end (604) of uide bushing (602) respectively to and be used for placing second slip chamber (10) of second slip end (605) of uide bushing (602).

2. An electromagnetic pneumatic reversing valve for an oxygen generator according to claim 1, wherein: the nitrogen main through hole (3) is communicated with the second sliding cavity (10).

3. An electromagnetic pneumatic reversing valve for an oxygen generator according to claim 1, wherein: the molecular sieve oxygen-making and nitrogen-discharging interface (1) is communicated with the inner cavity of the valve body (2).

4. An electromagnetic pneumatic reversing valve for an oxygen generator according to any one of claims 1 to 3, wherein: also comprises an elastic sealing component (11) arranged in the second sliding cavity (10).

5. The electromagnetic pneumatic reversing valve of an oxygen generator according to claim 4, wherein: the elastic sealing assembly (11) comprises a rubber plug (11-3), a spring seat (11-1) arranged at the bottom end of a second sliding cavity (10) of the valve seat (5), and a spring (11-2) with one end connected with the spring seat (11-1) and the other end connected with the rubber plug (11-3), wherein the spring seat (11-1) is fixedly connected with the bottom end of the second sliding cavity (10).