CN117967857A - Air flue adjustable electromagnetic valve for oxygenerator - Google Patents

Abstract

The invention relates to the technical field of electromagnetic valves, in particular to an air passage adjustable electromagnetic valve for an oxygen generator, which comprises a valve body, a valve core arranged in the valve body and an electromagnetic driving mechanism arranged outside the valve body and used for driving the valve core to move in the valve body.

Description

Air flue adjustable electromagnetic valve for oxygenerator

Technical Field

The invention relates to the technical field of electromagnetic valves, in particular to an air passage adjustable electromagnetic valve for an oxygen generator.

Background

Oxygenerator is a medical device for concentrating oxygen in air and providing it to a person in need of additional oxygen. In an oxygenerator, an air passage adjustable electromagnetic valve plays a crucial role. The airway-adjustable electromagnetic valve is a device capable of controlling oxygen flow, and the oxygen flow and the air pressure are adjusted through electromagnetic action.

In oxygenerators, solenoid valves are often used in conjunction with other sensors and control systems to ensure that the oxygen flow and concentration meet medical requirements. When a doctor or patient needs to adjust the oxygen concentration or flow, the solenoid valve needs to adjust the flow of oxygen according to the input signal, thereby meeting specific medical requirements.

Chinese patent CN106885005B discloses an air passage size-adjustable electromagnetic valve assembly, which comprises an electromagnetic valve housing, an electromagnetic valve outlet port, an electromagnetic valve inlet port, an electromagnetic coil port, a first spring, a piston, an electromagnetic coil and a shift fork.

Through this solenoid valve assembly, can provide different electric currents for solenoid according to the push stroke of tolerance control switch for solenoid produces the magnetic field difference, also different to the appeal of iron sucking disc, like this, make shift fork drive the displacement of piston also different, make the aperture of air flue produce the change, like this, just can control the tolerance of solenoid valve as required, however this assembly passes through the aperture of piston along radial regulation air flue, however this kind of regulation mode can lead to the air current to produce concussion and impact in the pipeline, and then lead to the output quality of oxygenerator oxygen unstable.

Disclosure of Invention

According to the air passage adjustable electromagnetic valve for the oxygenerator, the valve core is guided to move in the valve body along the air flow direction through the electromagnetic driving mechanism, so that the air inlet section, the valve cavity section and the air outlet section of the valve core valve body are coaxial, after the valve core is moved away, the air flow can flow without larger fluctuation in the air inlet section, the valve cavity section and the air outlet section, and meanwhile, the size of the air passage is adjusted by adjusting the moving amount of the valve core, so that the problem that the air flow is easy to fluctuate when the air passage is adjusted by the existing electromagnetic valve assembly is solved.

In order to solve the problems in the prior art, the invention provides an air passage adjustable electromagnetic valve for an oxygenerator, which comprises a valve body, a valve core arranged in the valve body, and an electromagnetic driving mechanism arranged outside the valve body and used for driving the valve core to move in the valve body, wherein the valve body is provided with an air inlet section, a valve cavity section and an air outlet section which are coaxially arranged in sequence, a plugging conical surface with the diameter gradually decreasing from the air inlet section to the air outlet section is arranged between the valve cavity section and the air outlet section, the valve core is slidingly arranged in the valve cavity section, the valve core is provided with an abutting conical surface abutted against the plugging conical surface in a closed state, when the valve core is far away from the air outlet section, a conical air guide channel with adjustable space is formed between the abutting conical surface and the plugging conical surface, an execution column in transmission connection with the electromagnetic driving mechanism is arranged on the valve core, and when the current input to the electromagnetic driving mechanism is changed, the valve core moves a corresponding distance in the valve cavity section.

Preferably, the electromagnetic valve further comprises an elastic reset piece, the elastic reset piece is arranged in the valve cavity section, the elastic reset piece is positioned between the air inlet section and the valve core, and the valve core is abutted on the plugging conical surface under the action of the elastic reset piece in the state that the electromagnetic driving mechanism is powered off.

Preferably, the diameter of the valve core is smaller than the inner diameter of the valve cavity section, and a gas passing section for passing gas is formed between the outer side surface of the valve core and the inner circumferential surface of the valve cavity section, and the gas passing section is communicated with the opened conical gas guide channel and the valve cavity section.

Preferably, the valve body is provided with a chute arranged along the circumferential direction thereof, the chute extends along the axial direction of the valve body, the execution column penetrates through the chute and is in sliding fit with the chute, the electromagnetic driving mechanism comprises a sealing cylinder and an electromagnetic coil, the sealing cylinder is coaxially arranged on the outer side of the valve body, a cylindrical closed cavity is formed between the inner circumferential surface of the sealing cylinder and the outer circumferential surface of the valve body, the electromagnetic coil is arranged in the cylindrical closed cavity and faces the execution column, and the execution column is made of a material capable of being attracted by magnetic force.

Preferably, the valve body is provided with a sliding groove arranged along the circumferential direction of the valve body, the sliding groove extends along the axial direction of the valve body, the execution column penetrates through the sliding groove and is in sliding fit with the sliding groove, the electromagnetic driving mechanism comprises a fixed pin, a rotating cylinder and an electromagnetic rotating assembly, the fixed pin is arranged at the outer end of the execution column, and the fixed pin extends along the radial direction of the valve body; the rotary cylinder is coaxially and rotationally arranged at the outer side of the valve body, an arc-shaped guide groove coaxial with the rotary cylinder is formed in the inner circumferential surface of the rotary cylinder, the fixed pin extends into the arc-shaped guide groove and is in sliding fit with the arc-shaped guide groove, and when the rotary cylinder rotates, the valve core is gradually far away from the air outlet section; the electromagnetic rotating assembly is arranged on the outer side of the valve body and used for driving the rotating cylinder to rotate relative to the valve body.

Preferably, the electromagnetic rotating assembly comprises an arc-shaped rack, a straight rack and an electromagnetic push rod, and the arc-shaped rack is coaxially and fixedly arranged on the outer circumferential surface of the rotating cylinder; the straight rack is arranged on the outer side of the rotating cylinder in a parallel sliding manner along the tangential direction of the rotating cylinder, and is meshed with the arc-shaped rack; the electromagnetic push rod is arranged on the outer side of the valve body, and an output shaft of the electromagnetic push rod is meshed with the straight rack.

Preferably, the electromagnetic valve further comprises a fixed shell, the fixed shell is provided with a first installation cavity penetrating through the fixed shell and a second installation cavity extending along the tangential direction of the installation cavity, the valve body is coaxially and fixedly arranged in the first installation cavity, the straight rack is slidingly arranged in the second installation cavity, the electromagnetic push rod is arranged at the outer end of the first installation cavity, and the output shaft of the electromagnetic push rod extends into the second installation cavity.

Preferably, the fixed pin radially slides to penetrate through the valve core, a containing cavity is arranged in the valve core, the containing cavity is provided with a square cavity, and the electromagnetic valve further comprises a screw rod, a sliding seat and a connecting rod; the screw rod and the valve core are coaxially and rotatably arranged in the accommodating cavity; the sliding seat is arranged in the square cavity in a sliding way, and the screw rod penetrates through the sliding seat and is in threaded connection with the sliding seat; the two ends of the connecting rod are respectively connected with the fixed pin and the sliding seat in a rotating way.

Preferably, the end of the execution column facing the air inlet section is provided with a first windward cutting edge, and the end of the execution column facing the air outlet section is provided with a second windward cutting edge.

Preferably, the valve body comprises a left valve seat and a right valve seat, one end of the left valve seat is provided with an internal thread cylinder, and the air inlet section is positioned in the left valve seat; one end of the right valve seat is provided with an external thread cylinder, the internal thread cylinder is in threaded connection with the external thread cylinder, the sliding grooves are circumferentially distributed on the external thread cylinder, the inner cavity of the internal thread cylinder forms a valve cavity section, and the air outlet section is positioned in the right valve seat.

Compared with the prior art, the application has the beneficial effects that:

According to the invention, the coaxial air inlet section, the valve cavity section and the air outlet section are sequentially arranged in the valve body, so that the valve core moves in the valve cavity section along the air flow direction, and is driven by the electromagnetic driving mechanism, when the magnitude of input current of the electromagnetic driving mechanism is controlled, the distance between the valve core and the air outlet section can be controlled, namely, a conical air guide channel with adjustable interval is formed between the abutting conical surface and the plugging conical surface, the air flow can sequentially and stably pass through the air inlet section, the valve cavity section, the conical air guide channel and the air outlet section, and the whole air flow channel is coaxial and kept uniform, so that the air flow can be ensured to be stably output when the opening degree of the conical air guide channel is regulated.

Drawings

Fig. 1 is a perspective view of an airway-adjustable solenoid valve for an oxygenerator.

Fig. 2 is a perspective sectional view of an airway-adjustable solenoid valve for an oxygenerator.

Fig. 3 is a schematic view of a first embodiment of an airway-adjustable solenoid valve for an oxygenerator when closed.

Fig. 4 is a schematic diagram of a first embodiment of an airway-adjustable solenoid valve for an oxygenerator when open.

Fig. 5 is a schematic view of a second embodiment of an airway-adjustable solenoid valve for an oxygenerator when closed.

Fig. 6 is a schematic diagram of a second embodiment of an airway-adjustable solenoid valve for an oxygenerator when open.

Fig. 7 is a partially exploded perspective view of an airway-adjustable solenoid valve for an oxygenerator.

Fig. 8 is an exploded perspective view of an airway-adjustable solenoid valve for an oxygenerator at a first view angle.

Fig. 9 is an exploded perspective view of an airway-adjustable solenoid valve for an oxygenerator at a second view angle.

Fig. 10 is a perspective exploded view of a valve core in an airway-adjustable solenoid valve for an oxygenerator.

The reference numerals in the figures are: 1. a valve body; 11. an air inlet section; 12. a valve cavity section; 13. an air outlet section; 14. plugging the conical surface; 15. a tapered air guide channel; 16. a chute; 17. a left valve seat; 171. an internal thread cylinder; 18. a right valve seat; 181. an external thread cylinder; 2. a valve core; 21. abutting the conical surface; 22. performing a column; 221. a first windward cutting edge; 222. a second windward cutting edge; 23. a square cavity; 3. an electromagnetic drive mechanism; 31. a sealing cylinder; 32. an electromagnetic coil; 33. a fixing pin; 34. a rotating cylinder; 341. an arc-shaped guide groove; 351. an arc-shaped rack; 352. a straight rack; 353. an electromagnetic push rod; 4. an elastic reset piece; 5. a fixed case; 61. a screw rod; 62. a sliding seat; 63. and a connecting rod.

Detailed Description

The invention will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the invention and the specific objects and functions achieved.

As shown in fig. 1 and 2, the present application provides:

The utility model provides an adjustable solenoid valve of air flue for oxygenerator, including valve body 1, and the case 2 of setting in valve body 1, and set up outside valve body 1 and be used for driving the electromagnetic drive mechanism 3 that case 2 moved in valve body 1, valve body 1 has the inlet segment 11 that sets gradually coaxially, valve pocket section 12 and air outlet segment 13, there is the shutoff conical surface 14 that the diameter gradually reduces from inlet segment 11 to air outlet segment 13 between valve pocket section 12 and the air outlet segment 13, case 2 slidingly sets up in valve pocket section 12, case 2 has the butt conical surface 21 with shutoff conical surface 14 butt, in the closed condition, the butt conical surface 21 butt is on shutoff conical surface 14, when case 2 keeps away from air outlet segment 13, form the toper air guide channel 15 that the interval can be adjusted between butt conical surface 21 and the shutoff conical surface 14, be provided with on case 2 with electromagnetic drive mechanism 3 transmission connection's actuating post 22, when changing the electric current of input electromagnetic drive mechanism 3, case 2 moves corresponding distance in valve pocket section 12.

The "opening degree" in the present application refers to the opening degree of the tapered air guide passage 15, and when the "opening degree" is larger, the opening degree of the tapered air guide passage 15 is larger, and when the "opening degree" is smaller, the opening degree of the tapered air guide passage 15 is smaller until the tapered air guide passage 15 is completely closed.

When the flow rate of oxygen output by the oxygenerator needs to be regulated, the electromagnetic driving mechanism 3 is started, the electromagnetic driving mechanism 3 drives the valve core 2 to move in the valve cavity section 12 at the outer side of the valve body 1, the abutting conical surface 21 of the valve core 2 is gradually far away from the plugging conical surface 14, a conical air guide channel 15 with adjustable interval is formed between the abutting conical surface 21 and the plugging conical surface 14, when the current input to the electromagnetic driving mechanism 3 is larger, the moving amount of the valve core 2 in the valve cavity section 12 is larger, the opening of the conical air guide channel 15 is larger, so that the size of an air channel can be effectively regulated, meanwhile, the conical air guide channel 15 is uniform because the valve core 2 moves in the air flow direction in the valve cavity section 12, and oxygen does not have larger fluctuation when passing through the conical air guide channel 15, so that stable oxygen can be output.

According to the embodiment, the coaxial air inlet section 11, the coaxial valve cavity section 12 and the coaxial air outlet section 13 are sequentially arranged in the valve body 1, so that the valve core 2 moves in the valve cavity section 12 along the air flow direction, the valve core 2 is driven by the electromagnetic driving mechanism 3, when the magnitude of input current of the electromagnetic driving mechanism 3 is controlled, the distance between the valve core 2 and the air outlet section 13 can be controlled, namely, a conical air guide channel 15 with adjustable distance is formed between the abutting conical surface 21 and the plugging conical surface 14, the air flow can sequentially and stably pass through the air inlet section 11, the valve cavity section 12, the conical air guide channel 15 and the air outlet section 13, and the whole air flow channel is coaxial and kept uniform, so that the air flow is ensured to be stably output when the opening degree of the conical air guide channel 15 is adjusted.

As shown in fig. 3, 4, 5 and 6, the electromagnetic valve further includes an elastic reset element 4, the elastic reset element 4 is disposed in the valve cavity section 12, the elastic reset element 4 is located between the air inlet section 11 and the valve core 2, and in a state that the electromagnetic driving mechanism 3 is powered off, the valve core 2 abuts against the plugging conical surface 14 under the action of the elastic reset element 4.

Through setting up the elastic return piece 4 between air inlet segment 11 and case 2 for case 2 elasticity butt is on shutoff conical surface 14 under the effect of elastic return piece 4, and when starting electromagnetic drive mechanism 3, case 2 overcomes the elasticity of elastic return piece 4 and keeps away from the gas outlet, and then makes case 2 and air outlet segment 13 between can form the toper air guide channel 15 that oxygen passed.

As shown in fig. 3 and 5, the diameter of the valve core 2 is smaller than the inner diameter of the valve cavity section 12, and a gas passing section for passing gas is formed between the outer side surface of the valve core 2 and the inner circumferential surface of the valve cavity section 12, and the gas passing section is communicated with the opened conical gas guide channel 15 and the valve cavity section 12.

Because the diameter of the valve core 2 is smaller than the inner diameter of the valve cavity section 12, an air passing section passing through air can be formed between the outer side surface of the valve core 2 and the inner circumferential surface of the valve cavity section 12, and when the valve core 2 is far away from the air outlet section 13, the air passing section can be communicated with the conical air guide channel 15, so that oxygen can sequentially pass through the air inlet section 11, the valve cavity section 12, the air passing section, the conical air guide channel 15 and the air outlet section 13.

As shown in fig. 3 and 4, the valve body 1 is provided with a chute 16 arranged in the circumferential direction thereof, the chute 16 extends in the axial direction of the valve body 1, the actuator post 22 penetrates the chute 16 and is in sliding engagement therewith, the electromagnetic drive mechanism 3 includes a seal cylinder 31 and an electromagnetic coil 32, the seal cylinder 31 is coaxially disposed outside the valve body 1, a cylindrical closed chamber is formed between the inner circumferential surface of the seal cylinder 31 and the outer circumferential surface of the valve body 1, the electromagnetic coil 32 is disposed in the cylindrical closed chamber and faces the actuator post 22, and the actuator post 22 is made of a material that can be attracted by magnetic force.

As a first embodiment of the electromagnetic drive 3 in the application, the valve element 2 is slidingly arranged in the valve chamber section 12 by means of the actuator post 22, whereby the valve body 1 is provided with the slide groove 16, and the actuator post 22 extends into the slide groove 16, whereby it is ensured that oxygen does not escape outwards through the slide groove 16 by means of the sealing cylinder 31 arranged outside the valve body 1.

When the electromagnetic coil 32 is electrified, the execution column 22 is attracted by magnetic force, so that the execution column 22 overcomes the elastic force of the elastic reset piece 4 to slide in the chute 16, when the current of the electromagnetic coil 32 is adjusted, the magnetic force of the electromagnetic coil 32 is changed, and when the magnetic force generated by the electromagnetic coil 32 is increased, the movement amount of the valve core 2 after overcoming the elastic force of the elastic reset piece 4 is larger, so that the opening degree of the conical air guide channel 15 is adjusted.

As shown in fig. 5 and 6, the valve body 1 is provided with a chute 16 arranged along the circumferential direction thereof, the chute 16 extends along the axial direction of the valve body 1, the actuator post 22 penetrates the chute 16 and is in sliding fit therewith, the electromagnetic drive mechanism 3 comprises a fixed pin 33, a rotary cylinder 34 and an electromagnetic rotary assembly, the fixed pin 33 is provided at the outer end of the actuator post 22, and the fixed pin 33 extends along the radial direction of the valve body 1; the rotary cylinder 34 is coaxially and rotatably arranged on the outer side of the valve body 1, an arc-shaped guide groove 341 coaxial with the rotary cylinder 34 is arranged on the inner circumferential surface of the rotary cylinder 34, the fixed pin 33 extends into the arc-shaped guide groove 341 and is in sliding fit with the arc-shaped guide groove 341, and when the rotary cylinder 34 rotates, the valve core 2 is gradually far away from the air outlet section 13; an electromagnetic rotating assembly is arranged on the outer side of the valve body 1, and the electromagnetic rotating assembly is used for driving the rotating cylinder 34 to rotate relative to the valve body 1.

As a second embodiment of the electromagnetic drive mechanism 3 in the application, the electromagnetic rotating assembly is started so that the rotating cylinder 34 rotates on the outer side of the valve body 1, and the fixing pin 33 is provided on the outer side of the actuating post 22, since the fixing pin 33 extends into the arc-shaped guide groove 341 of the inner circumferential surface of the rotating cylinder 34, the fixing pin 33 moves laterally in the valve chamber section 12 under the restraining action of the arc-shaped guide groove 341, and when the rotation angle of the rotating cylinder 34 is adjusted, the movement amount of the fixing pin 33 in the slide groove 16 can be adjusted, so that the movement amount of the valve spool 2 can be adjusted.

Since the arc-shaped guide groove 341 is coaxial with the rotating cylinder 34, the actuating post 22 connected to the fixing pin 33 can move only along the longitudinal direction of the slide groove 16, and when the rotating cylinder 34 rotates, the side edge of the arc-shaped guide groove 341 can guide the fixing pin 33 to move along the longitudinal direction of the slide groove 16, so that the movement amount of the valve element 2 can be adjusted.

As shown in fig. 7, the electromagnetic rotating assembly includes an arc-shaped rack 351, a straight rack 352, and an electromagnetic push rod 353, the arc-shaped rack 351 being coaxially and fixedly provided on the outer circumferential surface of the rotating cylinder 34; the straight racks 352 are slidably disposed in parallel on the outer side of the rotary drum 34 in the tangential direction of the rotary drum 34, and the straight racks 352 are engaged with the arc-shaped racks 351; the electromagnetic push rod 353 is provided outside the valve body 1, and an output shaft of the electromagnetic push rod 353 is engaged with the spur rack 352.

When the electromagnetic push rod 353 is electrified, the output shaft of the electromagnetic push rod 353 drives the straight rack 352 to move, the straight rack 352 is meshed with the arc rack 351, and the arc rack 351 is coaxially arranged on the outer circumferential surface of the rotary cylinder 34, so that when the straight rack 352 moves, the arc rack 351 can drive the rotary cylinder 34 to rotate on the outer side of the valve body 1, and the valve core 2 can be guided to move in the valve cavity section 12 through the fixing pin 33.

When the current in the electromagnetic push rod 353 is adjusted, the thrust force of the electromagnetic push rod 353 is limited, and thus the rotation angle of the rotary drum 34 on the valve body 1 can be adjusted.

As shown in fig. 7, the solenoid valve further includes a fixed housing 5 having a first installation cavity therethrough and a second installation cavity extending in a tangential direction of the installation cavity, the valve body 1 is coaxially and fixedly disposed in the first installation cavity, the straight rack 352 is slidingly disposed in the second installation cavity, the electromagnetic push rod 353 is disposed at an outer end of the first installation cavity, and an output shaft of the electromagnetic push rod 353 extends into the second installation cavity.

In order to avoid the arc-shaped rack 351 and the straight rack 352 being directly exposed to the air, the valve body 1 is arranged in the first installation cavity of the fixed shell 5, the straight rack 352 is arranged in the second installation cavity of the fixed shell 5, the fixed shell 5 is integrally formed, and after the straight rack 352 and the valve body 1 are installed, the external influence on the meshing transmission of the arc-shaped rack 351 and the straight rack 352 can be effectively avoided.

As shown in fig. 10, the fixing pin 33 slides through the valve core 2 in the radial direction, a containing cavity is arranged in the valve core 2, the containing cavity is provided with a square cavity 23, and the electromagnetic valve further comprises a screw rod 61, a sliding seat 62 and a connecting rod 63; the screw 61 is coaxially and rotatably arranged in the accommodating cavity with the valve core 2; the sliding seat 62 is slidably arranged in the square cavity 23, and the screw rod 61 penetrates through the sliding seat 62 and is in threaded connection with the sliding seat; both ends of the link 63 are rotatably connected to the fixing pin 33 and the slide mount 62, respectively.

In order to enable the outer end of the fixing pin 33 to extend into the arc-shaped guide groove 341, the fixing pin 33 is slidably disposed in the actuating post 22, and after the valve core 2 is mounted in the valve cavity section 12, the screw rod 61 is rotated relative to the valve core 2, the sliding seat 62 moves in the square cavity 23 due to the screw rod 61 penetrating through the sliding seat 62 and being screwed thereto, and simultaneously, the sliding seat 62 is rotatably connected with the fixing pin 33 and the sliding seat 62 respectively due to both ends of the connecting rod 63, so that the sliding seat 62 can drive the fixing pin 33 to move in the radial direction in the actuating post 22 when moving, and the outer end of the fixing pin 33 abuts in the arc-shaped guide groove 341 in the radial direction of the valve core 2, so that the fixing pin 33 can drive the valve core 2 to move in the valve cavity section 12 when the rotating cylinder 34 rotates.

As shown in fig. 8 and 9, the end of the execution column 22 facing the air inlet section 11 is provided with a first windward cutting edge 221, and the end of the execution column 22 facing the air outlet section 13 is provided with a second windward cutting edge 222.

Because the first windward cutting edge 221 and the second windward cutting edge 222 are respectively formed on the two sides of the execution column 22 facing the air inlet section 11 and the air outlet section 13, when the air passes through the air passing section, the windward cutting edge 221 and the windward cutting edge 222 can reduce the windage resistance of the air, so that the air can stably pass through the air passing section.

As shown in fig. 8 and 9, the valve body 1 includes a left valve seat 17 and a right valve seat 18, one end of the left valve seat 17 is provided with an internal thread cylinder 171, and the intake section 11 is located in the left valve seat 17; an external thread cylinder 181 is arranged at one end of the right valve seat 18, an internal thread cylinder 171 is in threaded connection with the external thread cylinder 181, sliding grooves 16 are circumferentially distributed on the external thread cylinder 181, an inner cavity of the internal thread cylinder 171 forms a valve cavity section 12, and an air outlet section 13 is positioned in the right valve seat 18.

The valve body 2 is movably installed in the male screw cylinder 181, and the female screw cylinder 171 at one end of the left valve seat 17 is screwed with the male screw cylinder 181 at one end of the right valve seat 18, so that the valve body 2 can be stably moved in the female screw cylinder 171 while the actuating post 22 of the valve body 2 can pass through the slide groove 16 and be slidably engaged therewith.

The foregoing examples merely illustrate one or more embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of the invention should be assessed as that of the appended claims.

Claims (10)

1. The utility model provides an adjustable solenoid valve of air flue for oxygenerator, a serial communication port, including the valve body, and set up the case in the valve body, and set up outside the valve body and be used for driving the electromagnetic drive mechanism that the case moved in the valve body, the valve body has the section of admitting air, valve pocket section and the section of giving vent to anger that sets up coaxially in proper order, the shutoff conical surface that has the diameter to the section of giving vent to anger gradually between valve pocket section and the section of giving vent to anger, the case slidingly sets up in the valve pocket section, the case has the butt conical surface with shutoff conical surface butt, under the closed condition, the butt conical surface butt is on the shutoff conical surface, when the case is kept away from the section of giving vent to anger, form the toper air guide passageway that the interval can be adjusted between butt conical surface and the shutoff conical surface, be provided with on the case and electromagnetic drive mechanism transmission connection's executive column, when changing the electric current of input electromagnetic drive mechanism, the case removes corresponding distance in the valve pocket section.

2. The air passage adjustable electromagnetic valve for the oxygen generator according to claim 1, wherein the electromagnetic valve further comprises an elastic reset piece, the elastic reset piece is arranged in the valve cavity section, the elastic reset piece is arranged between the air inlet section and the valve core, and the valve core is abutted to the plugging conical surface under the action of the elastic reset piece in a state that the electromagnetic driving mechanism is powered off.

3. The adjustable airway solenoid valve for an oxygenerator according to claim 2, wherein the diameter of the valve core is smaller than the inner diameter of the valve cavity section, an air passage section for passing air is formed between the outer side surface of the valve core and the inner circumferential surface of the valve cavity section, and the air passage section is communicated with the opened conical air guide channel and the valve cavity section.

4. The air passage adjustable solenoid valve for an oxygen generator according to claim 2, wherein a chute is provided on the valve body, which is arranged along a circumferential direction thereof, the chute extends along an axial direction of the valve body, the actuating cylinder penetrates the chute and is slidably fitted therewith, the electromagnetic drive mechanism includes a seal cylinder coaxially provided on an outer side of the valve body, a cylindrical closed chamber is formed between an inner circumferential surface of the seal cylinder and an outer circumferential surface of the valve body, and an electromagnetic coil is provided in the cylindrical closed chamber and faces the actuating cylinder, the actuating cylinder being made of a material that can be attracted by magnetic force.

5. The airway-adjustable solenoid valve for an oxygenerator according to claim 2, wherein the valve body is provided with a chute arranged along the circumferential direction thereof, the chute extends along the axial direction of the valve body, the actuating post penetrates the chute and is in sliding fit therewith, the electromagnetic driving mechanism comprises a fixing pin, a rotating cylinder and an electromagnetic rotating assembly,

The fixed pin is arranged at the outer end of the execution column and extends along the radial direction of the valve body;

the rotary cylinder is coaxially and rotationally arranged at the outer side of the valve body, an arc-shaped guide groove coaxial with the rotary cylinder is formed in the inner circumferential surface of the rotary cylinder, the fixed pin extends into the arc-shaped guide groove and is in sliding fit with the arc-shaped guide groove, and when the rotary cylinder rotates, the valve core is gradually far away from the air outlet section;

The electromagnetic rotating assembly is arranged on the outer side of the valve body and used for driving the rotating cylinder to rotate relative to the valve body.

6. The airway-adjustable solenoid valve for an oxygen generator according to claim 5, wherein the electromagnetic rotating assembly comprises an arc-shaped rack, a straight rack and an electromagnetic push rod,

The arc-shaped rack is coaxially and fixedly arranged on the outer circumferential surface of the rotary cylinder;

the straight rack is arranged on the outer side of the rotating cylinder in a parallel sliding manner along the tangential direction of the rotating cylinder, and is meshed with the arc-shaped rack;

the electromagnetic push rod is arranged on the outer side of the valve body, and an output shaft of the electromagnetic push rod is meshed with the straight rack.

7. The adjustable airway solenoid valve for an oxygenerator of claim 6 further comprising a stationary housing having a first mounting cavity therethrough and a second mounting cavity extending tangentially from the mounting cavity, the valve body being coaxially and fixedly disposed in the first mounting cavity, the straight rack being slidably disposed in the second mounting cavity, the electromagnetic pushrod being disposed at an outer end of the first mounting cavity, and an output shaft of the electromagnetic pushrod extending into the second mounting cavity.

8. The adjustable airway electromagnetic valve for an oxygen generator according to claim 5 or 6, wherein the fixed pin radially slides through the valve core, a containing cavity is arranged in the valve core, the containing cavity is provided with a square cavity, and the electromagnetic valve further comprises a screw rod, a sliding seat and a connecting rod;

the screw rod and the valve core are coaxially and rotatably arranged in the accommodating cavity;

the sliding seat is arranged in the square cavity in a sliding way, and the screw rod penetrates through the sliding seat and is in threaded connection with the sliding seat;

The two ends of the connecting rod are respectively connected with the fixed pin and the sliding seat in a rotating way.

9. An airway-adjustable solenoid valve for an oxygenerator according to claim 3 wherein the end of the actuator post facing the inlet section is provided with a first windward edge and the end of the actuator post facing the outlet section is provided with a second windward edge.

10. The airway-adjustable solenoid valve for an oxygen generator according to claim 4 or 5, wherein the valve body includes a left valve seat and a right valve seat,

One end of the left valve seat is provided with an internal thread cylinder, and the air inlet section is positioned in the left valve seat;

one end of the right valve seat is provided with an external thread cylinder, the internal thread cylinder is in threaded connection with the external thread cylinder, the sliding grooves are circumferentially distributed on the external thread cylinder, the inner cavity of the internal thread cylinder forms a valve cavity section, and the air outlet section is positioned in the right valve seat.