CN217645651U - Oxygen supply valve with multistage decompression function - Google Patents

Abstract

The utility model provides an oxygen supply valve with multistage decompression function, includes oxygen supply valve main part, and inside first decompression cavity, second decompression cavity, first decompression passageway and the second decompression passageway of being equipped with of oxygen supply valve main part, the fixed clamp plate that is equipped with in first decompression cavity top is equipped with one-level case group in the first decompression cavity, is equipped with second grade case group in the second decompression cavity, and the top of oxygen supply valve main part is equipped with the apron, form the oxygen suppliment cavity between apron and the clamp plate, oxygen supply valve main part lower extreme be equipped with the inlet channel of first decompression cavity intercommunication, through first decompression passageway intercommunication between first decompression cavity and the second decompression cavity, through second decompression passageway intercommunication between second decompression cavity and the oxygen suppliment cavity, be equipped with the air outlet channel who communicates with the oxygen suppliment cavity on the outer wall of oxygen supply valve main part, be equipped with the current-limiting piece that is used for adjusting air outlet channel air outlet pressure in the oxygen suppliment cavity, the utility model discloses can realize multistage decompression to the oxygen gas cylinder output for the oxygen suppliment cavity is more stable, strengthens user's result of use.

Description

Oxygen supply valve with multistage decompression function

Technical Field

The utility model relates to a valve field, especially an oxygen supply valve with multistage decompression function.

Background

The oxygen supply valve is a component which is arranged on the gas cylinder and used for reducing the pressure of oxygen in the gas cylinder, the oxygen supply valve in the current market generally adopts a one-level pressure reduction mode to supply oxygen and reduce the pressure, the oxygen supply pressure fluctuation is larger in the actual use process, the oxygen supply pressure is unstable, the oxygen supply pressure is larger when the pressure of the gas cylinder is larger, and when the pressure in the gas cylinder is reduced along with the use, the oxygen supply pressure of the oxygen supply valve is reduced along with the reduction, the using effect is poor, secondly, the existing oxygen supply valve is opened or closed, because the pressure in the gas cylinder is far larger than the atmospheric pressure, the resistance is larger in the opening or closing process of the existing oxygen supply valve, and certain use limitation exists.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide an oxygen supply valve with multistage decompression function to solve the problem that provides in the above-mentioned technical background.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a supply oxygen valve with multistage decompression function, is including supplying the oxygen valve main part, supply inside first decompression cavity, the second decompression cavity, first decompression passageway and the second decompression passageway of being equipped with of oxygen valve main part, first decompression cavity top is fixed and is equipped with the clamp plate, is equipped with one-level case group in the first decompression cavity, be equipped with second grade case group in the second decompression cavity, the top of supplying the oxygen valve main part is equipped with the apron, form the oxygen suppliment cavity between apron and the clamp plate, supply oxygen valve main part lower extreme be equipped with the inlet channel of first decompression cavity intercommunication, through first decompression passageway intercommunication between first decompression cavity and the second decompression cavity, through second decompression passageway intercommunication between second decompression cavity and the oxygen suppliment cavity, be equipped with the outlet channel who communicates with the oxygen suppliment cavity on the outer wall of oxygen valve main part, be equipped with the current-limiting piece that is used for controlling the switching of oxygen valve in the oxygen suppliment cavity.

In the above-mentioned utility model, it is further, one-level case group includes needle and first spring, the needle includes annular portion and locates the thimble portion of annular portion lower surface, annular portion upper surface is equipped with the depressed part, form the gas chamber room between depressed part and the clamp plate, thimble portion sets up with inlet channel relatively, the inside needle passageway that communicates with gas chamber room that is equipped with of thimble portion, first spring housing establish in first decompression chamber and with the lower surface butt of annular portion, the needle make a round trip to move along the direction of height of first decompression chamber under the effect of first spring, and then control inlet channel's switching.

In the above-mentioned utility model, it is further, secondary valve core group includes upper cover, second spring, second grade valve core pole, second grade case and secondary valve core seat, the upper cover is fixed on the outer wall of oxygen supply valve main part through elastic diaphragm, has the installation cavity between upper cover and the elastic diaphragm, installation cavity upper end is equipped with the spring housing, and the last pot head of second spring is established in the spring housing, the lower extreme of second spring pass through the spring gasket with the elastic diaphragm butt, second grade valve core pole upper end passes elastic diaphragm and spring gasket perpendicularly in proper order and fixes on the spring gasket through lock nut, the secondary valve core seat is installed in the second decompression chamber, the secondary valve core is installed at the lower extreme of second grade valve core pole and is formed with first air gap with the secondary valve core seat, and the secondary valve core makes a round trip to move along the secondary valve core pole under the effect of second spring, and then controls the switching in first air gap.

In the above-mentioned utility model, it is further, the current-limiting piece includes that current-limiting plate and integrated into one piece are in pivot on the current-limiting plate, the surface of current-limiting plate is equipped with the bleeder vent, all be equipped with the current-limiting valve block in the bleeder vent, the apron includes that roof and integrated into one piece are in the boss of roof lower surface, the center play of apron is equipped with the through-hole that runs through roof and boss, and the lower surface of boss is equipped with the air passing hole, be equipped with on the lateral wall of boss with the venthole of air passing hole intercommunication, the current-limiting piece is established through the pivot cover can follow the through-hole rotation in the through-hole, the rotation and the bleeder vent intercommunication of air passing hole accessible current-limiting piece have the second between current-limiting plate and the clamp plate upper surface and cross the air gap, all have the third between boss lateral wall and the oxygen suppliment cavity inner wall and cross the air gap, air outlet channel with third is crossed air gap intercommunication.

In the above-mentioned utility model, it is further, the surface of current-limiting plate is equipped with a plurality of bleeder vents along the circumferencial direction equidistant, all be equipped with the current-limiting valve block in a plurality of bleeder vents, the gas passing amount of the current-limiting valve block in each bleeder vent is all inequality, and the gas passing hole communicates with a plurality of bleeder vents one-to-one through the rotation of current-limiting piece.

Above-mentioned in the utility model, it is further, the symmetry is provided with a pair of mounting hole on the lateral wall of boss, be provided with the ripple steel ball in the mounting hole, the equidistant a plurality of and of being provided with in circumference of pivot the steel ball complex recess of ripple steel ball, the locating part passes through realize rotational positioning between recess and ripple steel ball and the apron.

In the above-mentioned utility model, it is further, the upper surface mounting of roof has the signboard, the signboard top is equipped with fixes the rotatory handle in the pivot, and the lower surface of rotatory handle is equipped with annular spacing groove, and the roof upper surface is equipped with spacing arch, and the upper surface of rotatory handle still nests there is the compass.

In the above utility model, furthermore, the air outlet channel is connected with the air outlet nozzle fixed on the oxygen supply valve main body, and the oxygen supply valve main body is internally provided with an inflation channel communicated with the air inlet channel, and the inflation channel is connected with the inflation nozzle fixed on the oxygen supply valve main body.

In the above-mentioned utility model, it is further, still be equipped with the pressure measurement passageway with inlet channel intercommunication in the oxygen supply valve main part, be equipped with the manometer of fixing in the oxygen supply valve main part on the pressure measurement passageway, still be connected with the explosion-proof valve of fixing in the oxygen supply valve main part on the pressure measurement passageway.

In the above utility model, further, be equipped with the perforation on the clamp plate, the perforation sets up with second decompression passageway relatively, and second decompression passageway is through perforation and oxygen suppliment cavity intercommunication.

The beneficial effects of the utility model are that: the utility model discloses inside first decompression cavity and the second decompression cavity of being equipped with of oxygen supply valve main part, be equipped with one-level case group and second grade case group in first decompression cavity and the second decompression cavity respectively, under the effect of one-level case group and second grade case group, through the mode control pressure of giving vent to anger of multistage decompression for the oxygen pressure after the decompression can not appear fluctuating by a wide margin along with the gas cylinder internal gas pressure size, can reach the purpose of stable oxygen suppliment, secondly, the utility model discloses be provided with the current-limiting piece that is used for controlling the switching of oxygen supply valve in the oxygen supply cavity, because oxygen supply cavity pressure is less, and then make the resistance when oxygen supply valve opens or closes less, the use of convenient oxygen supply valve.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a front view of the present invention;

FIG. 3 isbase:Sub>A sectional view A-A of FIG. 2;

fig. 4 is a side view of the present invention;

FIG. 5 is a sectional view taken along line B-B of FIG. 4;

FIG. 6 is a front view of the oxygen supply valve body of the present invention;

FIG. 7 is a cross-sectional view C-C of FIG. 6;

FIG. 8 is a side view of the oxygen supply valve body of the present invention;

FIG. 9 is a cross-sectional view D-D of FIG. 8;

fig. 10 is a front view of the primary valve core set of the present invention;

FIG. 11 is a cross-sectional view E-E of FIG. 10;

fig. 12 is a front view of the primary valve core set of the present invention;

FIG. 13 is a cross-sectional view F-F of FIG. 12;

fig. 14 is an exploded view of the present invention;

fig. 15 is another exploded view of the present invention.

In the figure, 1-the oxygen supply valve body; 1.1-a first reduced-pressure chamber; 1.2-a second reduced-pressure chamber; 1.3-a first relief passage; 1.4-a second relief passage; 1.5-an oxygen supply chamber; 1.6-an intake passage; 1.7-gas outlet channel; 1.8-inflation channel; 1.9-pressure measuring channel; 2, pressing a plate; 2.1-perforation, 3-first-stage valve core group; 3.1-valve needle; 3.11-Ring portion; 3.12-thimble portion; 3.13-concave part; 3.14-gas containing chamber; 3.15-valve needle channel; 3.2-a first spring; 4-second-stage valve core group, 4.1-upper cover; 4.2-a second spring; 4.3-second valve core rod; 4.4-two-stage valve core; 4.5-second valve core seat; 4.6-elastic membrane; 4.7-mounting a cavity; 4.8-spring housing; 4.9-spring washer; 4.10-lock nut; 4.11-first air gap; 5-cover plate; 5.1-top plate; 5.2-boss; 5.3-through holes; 5.4-air passing holes; 5.5-air outlet; 5.6-mounting holes; 5.7-limiting bulge; 6-a flow restriction; 6.1-a restrictor plate; 6.2-rotating shaft; 6.3-air holes; 6.4-flow limiting valve plate; 6.5-groove, 7-second air gap; 8-a third air gap; 9-corrugated steel balls; 10-a marking plate; 11-a rotating handle; 11.1-annular limiting groove 11.1; 12-a compass; 13-an air outlet nozzle and 14-an air charging nozzle; 15-pressure gauge; 16-an explosion-proof valve; 17-a spool pad; an 18-tetrafluoro gasket.

Detailed Description

The following embodiments of the present invention are provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

Example 1:

an oxygen supply valve with multi-stage pressure reduction function is disclosed, please refer to fig. 1-fig. 9, and comprises an oxygen supply valve body 1, a first pressure reduction chamber 1.1, a second pressure reduction chamber 1.2, a first pressure reduction channel 1.3 and a second pressure reduction channel 1.4 are arranged in the oxygen supply valve body 1, a pressure plate 2 is fixedly arranged above the first pressure reduction chamber 1.1, a first-stage valve core group 3 is arranged in the first pressure reduction chamber 1.1, a second-stage valve core group 4 is arranged in the second pressure reduction chamber 1.2, a cover plate 5 is arranged at the top end of the oxygen supply valve body 1, an oxygen supply chamber 1.5 is formed between the cover plate 5 and the pressure plate 2, an air inlet channel 1.6 communicated with the first pressure reduction chamber 1.1 is arranged at the lower end of the oxygen supply valve body 1, the first pressure reduction chamber 1.1 is communicated with the second pressure reduction chamber 1.2 through the first pressure reduction channel 1.3, through second decompression passageway 1.4 intercommunication between second decompression chamber 1.2 and the oxygen suppliment chamber 1.5, be equipped with on the outer wall of oxygen suppliment valve main part 1 with the passageway 1.7 of giving vent to anger of oxygen suppliment chamber 1.5 intercommunication, the utility model discloses specifically in the use, hyperbaric oxygen gets into first decompression chamber 1.1 through inlet channel 1.6, the one-level case group 3 of first decompression chamber 1.1 carries out first decompression to hyperbaric oxygen, oxygen through first decompression rethread first decompression passageway 1.3 enters into second decompression chamber 1.2, secondary valve core group 4 in the second decompression chamber 1.2 carries out the secondary decompression to hyperbaric oxygen again, oxygen through the secondary decompression rethread second decompression passageway 1.4 enters into the oxygen suppliment chamber 1.5, discharges through passageway 1.7 of giving vent to anger at last.

Referring to fig. 10 and 11, the primary valve core set 3 includes a valve needle 3.1 and a first spring 3.2, the valve needle 3.1 includes an annular portion 3.1 and a thimble portion 3.12 disposed on a lower surface of the annular portion 3.11, a concave portion 3.13 is disposed on an upper surface of the annular portion 3.11, a gas containing chamber 3.14 is formed between the concave portion 3.13 and the pressing plate 2, the thimble portion 3.12 is disposed opposite to the gas inlet channel 1.6, a valve needle channel 3.15 communicated with the gas containing chamber 3.14 is disposed inside the thimble portion 3.12, the first spring 3.2 is disposed in the first pressure reducing chamber 1.1 and abuts against the lower surface of the annular portion 3.11, the valve needle 3.1 moves back and forth along a height direction of the first pressure reducing chamber 1.1 under the action of the first spring 3.2, so as to control opening and closing of the gas inlet channel 1.6, specifically, high-pressure oxygen of the oxygen cylinder enters the first pressure reducing chamber 1.1 through the gas inlet channel 1.6, high-pressure oxygen enters an air containing cavity chamber 3.14 formed by a concave part 3.13 and a pressing plate 2 through a valve needle channel 3.15, when the pressure in the air containing cavity chamber 3.14 is greater than the pressure of a first spring 3.2, the pressure in the air containing cavity chamber 3.14 overcomes the pressure of the first spring 3.2 and pushes the valve needle 3.1 downwards, the valve needle 3.1 blocks the air inlet channel 1.6 downwards, preferably, a valve core cushion 17 is nested at the bottom end of the valve needle 3.1, the blocking effect of the valve needle 3.1 on the air inlet channel 1.6 is enhanced, when the oxygen in the first decompression chamber 1.1 is discharged through the first decompression channel 1.3, the pressure in the first decompression channel 1.3 is reduced, the valve needle 3.1 is pushed upwards again by the first spring 3.2, the high-pressure oxygen in an oxygen bottle flows into the first decompression chamber 1.1 through the air inlet channel 1.6, and further, the primary decompression effect is achieved, the oxygen pressure after primary decompression can be stabilized in a certain range, and secondary decompression is convenient.

Referring to fig. 12 and 13, the secondary valve core set 4 includes an upper cover 4.1, a second spring 4.2, a secondary valve core rod 4.3, a secondary valve core 4.4 and a secondary valve core seat 4.5, the upper cover 4.1 is fixed on the outer wall of the oxygen supply valve body 1 through an elastic membrane 4.6, an installation cavity 4.7 is provided between the upper cover 4.1 and the elastic membrane 4.6, the upper end of the installation cavity 4.7 is provided with a spring sleeve 4.8, the upper end of the second spring 4.2 is sleeved in the spring sleeve 4.8, the lower end of the second spring 4.2 is abutted against the elastic membrane 4.6 through a spring gasket 4.9, the upper end of the secondary valve core rod 4.3 sequentially vertically passes through the elastic membrane 4.6 and the spring gasket 4.9 and is fixed on the spring gasket 4.9 through a lock nut 4.10, the secondary valve core 4.5 is installed in the second cavity 1.2, the secondary valve core 4.4 is installed at the lower end of the secondary valve core rod 4.3 and forms a first air gap with the secondary valve core seat 4.5, the second-stage valve core 4.4 moves back and forth along the second-stage valve core rod 4.3 under the action of the second spring 4.2 so as to control the opening and closing of the first air passing gap 4.11, in particular, under the normal state, the second spring 4.2 is in a compressed state, the second spring 4.2 downwards extrudes the elastic membrane 4.6, the second-stage valve core 4.4 downwards moves under the pushing of the second-stage valve core rod 4.3, at the moment, the second-stage valve core 4.4 is not in contact with the second-stage valve core seat 4.5, oxygen subjected to primary pressure reduction enters the first air passing gap 4.11 through the first pressure reduction channel 1.3, because the second-stage valve core 4.4 is not in contact with the second-stage valve core seat 4.5, the oxygen can enter a cavity between the elastic membrane 4.6 and the second-stage valve core seat 4.5 through a gap between the second-stage valve core 4.4 and the second-stage valve core seat 4.5, and the pressure in the cavity between the elastic membrane 4.6 and the second-stage valve core seat 4.5 can gradually increase along with the continuous entering of the oxygen, in the process of enlargement, the elastic membrane 4.6 is pressed upwards to drive the secondary valve core rod 4.3 to move upwards, the secondary valve core rod 4.3 drives the secondary valve core 4.4 to move upwards and abut against the secondary valve core seat 4.5 in the process of moving upwards (as shown in figure 13), so that the first air passing gap 4.11 is closed, preferably, the secondary valve core 4.4 is sleeved with a tetrafluoro sealing gasket 18 to enhance the sealing closing effect between the secondary valve core 4.4 and the secondary valve core seat 4.5, when oxygen in a chamber between the elastic membrane 4.6 and the secondary valve core seat 4.5 is discharged through the second pressure reducing channel 1.4, the pressure in the chamber is reduced, the second spring 4.2 pushes the secondary valve core rod 4.3 downwards, the secondary valve core 4.4 is separated from the secondary valve core seat 4.5, the oxygen can enter the chamber between the elastic membrane 4.6 and the secondary valve core seat 4.5 through the first air passing gap 4.11, so as to achieve the purpose of secondary pressure reduction, and finally, the oxygen enters the chamber between the secondary pressure reducing channel 4.5 and is discharged through the second air reducing channel 1.7.

It should be further described with respect to the above embodiment, because the oxygen pressure of the oxygen in the oxygen cylinder is relatively high when the oxygen cylinder is just beginning to be used, at this time, the first-stage valve core group 3 can firstly reduce the pressure of the oxygen in the gas cylinder for one time, and then reduce the pressure for the second time through the second-stage valve core group 4, along with the continued practicality of the gas cylinder, when the pressure of the oxygen in the gas cylinder is reduced to below the pressure reduction pressure of the first-stage valve core group, the pressure of the oxygen in the gas cylinder is not enough to push the valve needle 3.1, and the oxygen in the gas cylinder can directly enter the first pressure reduction channel 1.3 to be reduced by the second-stage valve core group.

Example 2:

in this embodiment, a flow-limiting member 6 for controlling the opening and closing of the oxygen supply valve is disposed in the oxygen supply chamber 1.5, please refer to fig. 3, fig. 5, fig. 14 and fig. 15, the flow-limiting member 6 includes a flow-limiting plate 6.1 and a rotating shaft 6.2 integrally formed on the flow-limiting plate 6.1, an air vent 6.3 is disposed on the surface of the flow-limiting plate 6.1, a flow-limiting valve sheet 6.4 is disposed in each air vent 6.3, the cover plate 5 includes a top plate 5.1 and a boss 5.2 integrally formed on the lower surface of the top plate 5.1, a through hole 5.3 penetrating through the top plate 5.1 and the boss 5.2 is disposed at the center of the cover plate 5, an air passing hole 5.4 is disposed on the lower surface of the boss 5.2, an air outlet hole 5.5 communicated with the air passing hole 5.4 is disposed on the side wall of the boss 5.2, the flow-limiting member 6 is sleeved in the through hole 5.3 and can rotate along the through hole 5.3, the air vent 6 is communicated with the air vent 6.1, a gap between the flow-limiting plate and the second air outlet plate 5.2, and the third air passage 5 is communicated with the inner wall of the third air vent 5, and the air outlet gap illustrated in the attached drawings, and the third air passage 5.

In this embodiment, the pressing plate 2 is further provided with a through hole 2.1, the through hole 2.1 is opposite to the second pressure reducing channel 1.4, the second pressure reducing channel 1.4 is communicated with the oxygen supply cavity 1.5 through the through hole 2.1, after oxygen subjected to secondary pressure reduction enters the oxygen supply cavity 1.5 through the second pressure reducing channel 1.4, the oxygen enters the vent hole 6.3 through the second air passing gap 7 between the restrictor plate 6.1 and the pressing plate 2, the restrictor plate 6.4 of the vent hole 6.3 exerts a further pressure reduction effect on the oxygen entering the vent hole 6.3, when the air passing hole 5.4 on the lower surface of the boss 5.2 aligns with the vent hole 6.3 along with the rotation of the restrictor plate 6.1, the vent hole 6.3 enters the air outlet hole 5.5 through the air passing hole 5.4, the air outlet hole 5.5 discharges the oxygen into the third air passing gap 8 between the side wall of the boss 5.2 and the inner wall of the oxygen supply cavity 1.5, and finally discharges the air outlet nozzle 13 on the air outlet channel 1.7.

In the embodiment, the flow limiting piece 6 is rotatably connected to the cover plate 5, the flow limiting piece 6 is rotated, the air holes 6.3 on the flow limiting plate 6.1 of the flow limiting piece 6 are aligned with the air passing holes 5.4, and oxygen can be discharged through the air outlet holes 5.5, so that the purpose of opening the oxygen supply valve is achieved, correspondingly, when the air holes 6.3 on the flow limiting plate 6.1 of the flow limiting piece 6 are staggered with the air passing holes 5.4 along with the rotation of the flow limiting piece, the oxygen in the air holes 6.3 cannot be discharged through the air outlet holes 5.5, so that the purpose of closing the oxygen supply valve is achieved, and by means of the scheme, the defect that the traditional oxygen supply valve is large in resistance when the oxygen supply valve is opened or closed due to large oxygen pressure is overcome.

Example 3:

in this embodiment, please refer to fig. 14 and fig. 15 again, which is different from embodiment 2 in that a plurality of air holes 6.3 are formed in the surface of the restrictor plate 6.1 at equal intervals along the circumferential direction, the plurality of air holes 6.3 are all provided with the flow-limiting valve plates 6.4, the air passing amount of the flow-limiting valve plate 6.4 in each air hole 6.3 is different, and the air passing holes 5.4 are communicated with the plurality of air holes 6.3 in a one-to-one correspondence manner through rotation of the restrictor 6, according to the above scheme, when the restrictor 6 is rotated, the air passing holes 5.4 on the lower surface of the boss 5.2 can be aligned with the plurality of air holes 6.3 for ventilation respectively, and since the air passing amount of the flow-limiting valve plates 6.4 in each air hole 6.3 is different, the purpose of controlling different air outlet amounts can be achieved when the restrictor 6 is rotated, so that the restrictor 6 has a shift adjusting function.

In the above embodiment, as a more preferable scheme, a pair of mounting holes 5.6 is symmetrically arranged on the side wall of the boss 5.2, as shown in fig. 5, a corrugated steel ball 9 is arranged in the mounting hole 5.6, a plurality of grooves 6.5 matched with the steel ball of the corrugated steel ball 9 are arranged in the circumferential direction of the rotating shaft 6.2 at equal intervals, the limiting member 6 realizes rotational positioning between the cover plate 5 and the rotating shaft 6.5 through the grooves 6.5 and the corrugated steel ball 9, preferably, six grooves 6.5 are arranged in the circumferential direction of the rotating shaft 6.2 at equal intervals, two mutually symmetrical grooves 6.5 form a group, the six grooves 6.5 comprise three groups, each group corresponds to one gear, and thus the purpose of positioning each air outlet gear is achieved.

In the above embodiment, as a more preferable scheme, the top surface of the top plate 5.1 is fixed with the identification plate 10, the rotary handle 11 fixed on the rotating shaft 6.2 is arranged above the identification plate 10, the lower surface of the rotary handle 11 is provided with the annular limiting groove 11.1, the top surface of the top plate 5.1 is provided with the limiting protrusion 5.7, and the upper surface of the rotary handle 11 is further nested with the compass 12.

Example 4:

in this embodiment, be connected with the air outlet 13 of fixing on oxygen supply valve main part 1 on outlet channel 1.7, conveniently be connected the oxygen tube with this oxygen supply valve, secondly, still be equipped with the passageway of aerifing 1.8 with inlet channel 1.6 intercommunication in the oxygen supply valve main part 1, be connected with the charging connector 14 of fixing on oxygen supply valve main part 1 on the passageway of aerifing 1.8, for preventing that outside hyperbaric oxygen from damaging the valve member in the oxygen supply valve, so traditional oxygen supply valve generally does not have the function of inflating, traditional oxygen supply valve is when aerifing the gas cylinder, all takes off the oxygen supply valve from the gas cylinder earlier, then connect special inflation accessory on the gas cylinder and inflate the gas cylinder, and in the utility model, communicate mutually between passageway of aerifing 1.8 and inlet channel 1.6, when aerifing, hyperbaric oxygen gets into passageway of aerifing 1.8 and inlet channel 1.6 in proper order through charging connector 14, when hyperbaric oxygen upwards gets into first decompression cavity 1.1 through inlet channel 1.6, the needle 3.1 can receive the pressure and move down and close the passageway of aerifing and the first decompression cavity of admitting air through the oxygen, thereby the second decompression cavity is through the second oxygen inlet channel 1.6 and can not get into the second decompression cavity more through the utility model discloses a high-pressure oxygen is more, and the utility model is suitable for the oxygen supply valve is suitable for the oxygen.

In the above embodiment, as a more preferable scheme, still be equipped with the pressure measurement passageway 1.9 with inlet channel 1.6 intercommunication in the oxygen supply valve main part 1, be equipped with the manometer 15 of fixing on oxygen supply valve main part 1 on the pressure measurement passageway 1.9, can audio-visually observe the oxygen pressure condition in the gas cylinder through the manometer, still be connected with the explosion-proof valve 16 of fixing on oxygen supply valve main part 1 on the pressure measurement passageway 1.9, when the case group in the oxygen supply valve breaks down and causes oxygen supply valve internal pressure abnormal, can pass through explosion-proof valve 16 pressure release explosion-proof.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (10)

1. The utility model provides a supply oxygen valve with multistage decompression function, a serial communication port, including supplying the oxygen valve main part, supply inside first decompression cavity, the second decompression cavity, first decompression passageway and the second decompression passageway of being equipped with of oxygen valve main part, the fixed clamp plate that is equipped with in first decompression cavity top is equipped with one-level case group, be equipped with second case group in the second decompression cavity, the top of supplying the oxygen valve main part is equipped with the apron, form the oxygen suppliment cavity between apron and the clamp plate, supply oxygen valve main part lower extreme to be equipped with the inlet channel with first decompression cavity intercommunication, through first decompression passageway intercommunication between first decompression cavity and the second decompression cavity, through second decompression passageway intercommunication between second decompression cavity and the oxygen suppliment cavity, be equipped with the outlet channel who communicates with the oxygen suppliment cavity on supplying the outer wall of oxygen valve main part, be equipped with the current-limiting piece that is used for controlling the switching of oxygen valve in the oxygen suppliment cavity.

2. The oxygen supply valve with the multistage pressure reduction function according to claim 1, wherein the primary valve core set comprises a valve needle and a first spring, the valve needle comprises an annular part and a thimble part arranged on the lower surface of the annular part, a concave part is arranged on the upper surface of the annular part, an air accommodating cavity is formed between the concave part and the pressure plate, the thimble part is arranged opposite to the air inlet channel, a valve needle channel communicated with the air accommodating cavity is arranged inside the thimble part, the first spring is sleeved in the first pressure reduction cavity and abutted against the lower surface of the annular part, and the valve needle moves back and forth along the height direction of the first pressure reduction cavity under the action of the first spring to control the opening and closing of the air inlet channel.

3. The oxygen supply valve with the multistage pressure reduction function according to claim 2, wherein the secondary valve core set comprises an upper cover, a second spring, a secondary valve core rod, a secondary valve core and a secondary valve core seat, the upper cover is fixed on the outer wall of the oxygen supply valve main body through an elastic membrane, an installation cavity is arranged between the upper cover and the elastic membrane, the upper end of the installation cavity is provided with a spring sleeve, the upper end of the second spring is sleeved in the spring sleeve, the lower end of the second spring is abutted to the elastic membrane through a spring gasket, the upper end of the secondary valve core rod sequentially and vertically penetrates through the elastic membrane and the spring gasket and is fixed on the spring gasket through a locking nut, the secondary valve core seat is installed in the second pressure reduction cavity, the secondary valve core is installed at the lower end of the secondary valve core rod and forms a first air passing gap with the secondary valve core seat, and the secondary valve core rod moves back and forth under the action of the second spring to control the opening and closing of the first air passing gap.

4. The oxygen supply valve with the multi-stage pressure reduction function according to claim 1, wherein the flow limiting member comprises a flow limiting plate and a rotating shaft integrally formed on the flow limiting plate, air holes are formed in the surface of the flow limiting plate, flow limiting valve plates are arranged in the air holes, the cover plate comprises a top plate and a boss integrally formed on the lower surface of the top plate, a through hole penetrating through the top plate and the boss is formed in the center of the cover plate, air passing holes are formed in the lower surface of the boss, air outlet holes communicated with the air passing holes are formed in the side wall of the boss, the flow limiting member is sleeved in the through hole through the rotating shaft and can rotate along the through hole, the air passing holes can be communicated with the air holes through the rotation of the flow limiting member, a second air passing gap is formed between the flow limiting plate and the upper surface of the pressing plate, third air passing gaps are formed between the side wall of the boss and the inner wall of the oxygen supply chamber, and the air outlet channel is communicated with the third air passing gaps.

5. The oxygen supply valve with the multistage pressure reduction function according to claim 4, wherein a plurality of air holes are formed in the surface of the flow limiting plate at equal intervals along the circumferential direction, the plurality of air holes are internally provided with the flow limiting valve plates, the air passing amount of the flow limiting valve plates in each air hole is different, and the air passing holes are communicated with the plurality of air holes in a one-to-one correspondence mode through rotation of the flow limiting members.

6. The oxygen supply valve with the multistage pressure reduction function as claimed in claim 5, wherein a pair of mounting holes are symmetrically formed in the side wall of the boss, corrugated steel balls are arranged in the mounting holes, a plurality of grooves matched with the steel balls of the corrugated steel balls are arranged on the rotating shaft in the circumferential direction at equal intervals, and the limiting member is rotatably positioned between the cover plate and the corrugated steel balls through the grooves.

7. The oxygen supply valve with the multistage pressure reduction function according to claim 6, wherein an identification plate is fixed on the upper surface of the top plate, a rotating handle fixed on the rotating shaft is arranged above the identification plate, an annular limiting groove is formed in the lower surface of the rotating handle, a limiting protrusion is arranged on the upper surface of the top plate, and a compass is further nested on the upper surface of the rotating handle.

8. The oxygen supply valve with multi-stage pressure reduction function according to claim 7, wherein the outlet channel is connected with an outlet nozzle fixed on the oxygen supply valve body, an inflation channel communicated with the inlet channel is further arranged in the oxygen supply valve body, and the inflation channel is connected with an inflation nozzle fixed on the oxygen supply valve body.

9. The oxygen supply valve with the multi-stage pressure reduction function according to claim 8, wherein a pressure measurement channel communicated with the air inlet channel is further arranged in the oxygen supply valve body, a pressure gauge fixed on the oxygen supply valve body is arranged on the pressure measurement channel, and an explosion-proof valve fixed on the oxygen supply valve body is further connected to the pressure measurement channel.

10. The oxygen supply valve with multi-stage pressure reduction function according to any one of claims 4 to 9, wherein the pressure plate is provided with a perforation, the perforation is arranged opposite to the second pressure reduction passage, and the second pressure reduction passage is communicated with the oxygen supply chamber through the perforation.

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