阅读说明：本技术 一种混合气自动充装方法及其充装设备 (Automatic mixed gas filling method and filling equipment thereof ) 是由 万建明 李松庆 陈利伟 沈渊忠 于 2021-06-15 设计创作，主要内容包括：本发明涉及混合气充装技术领域,具体涉及一种混合气自动充装方法及其充装设备。本发明设计的切换机构设计有第一阀体和第二阀体,通过一个电磁铁即可同时驱动第一阀体和第二阀体动作,完成两种气体充气过程中的气道切换,整体结构简单紧凑。设计的储气瓶内部设计有三叉管和第一气管、第二气管第三气管,每根气管底部均开有气孔,且靠近上方的第一气孔开口斜向上,靠近中部的第二气孔开口水平,靠近底部的第三气孔开口斜向下,保证了在充气过程中,气体可以均匀的散布在储气瓶内,气体混合均匀。同时可以保证在经过长时间存放导致混合气体由于密度不同产生分层时,瓶内的气体可以在三叉管内完成混合再排出瓶外,增强实用性。(The invention relates to the technical field of mixed gas filling, in particular to a mixed gas automatic filling method and a filling device thereof. The switching mechanism designed by the invention is provided with the first valve body and the second valve body, the first valve body and the second valve body can be driven to act simultaneously through the electromagnet, the air passage switching in the process of inflating two gases is completed, and the whole structure is simple and compact. The gas bomb of design inside design has Y-pipe and first trachea, second trachea third trachea, and every trachea bottom has all opened the gas pocket, and is close to the first gas pocket opening slant of top upwards, is close to the second gas pocket opening level at middle part, and the third gas pocket opening that is close to the bottom is slant downwards, has guaranteed to aerify the in-process, and gas can be even scatter in the gas bomb, gas mixing. Meanwhile, when the mixed gas is layered due to different densities after being stored for a long time, the gas in the bottle can be mixed in the Y-shaped pipe and then discharged out of the bottle, and the practicability is enhanced.)

1. The automatic mixed gas filling equipment comprises a gas-liquid conversion mechanism (1), an inflation control mechanism (2), a switching mechanism (3) and a protection mechanism (4), and is characterized in that the inflation control mechanism (2) is arranged on the side of the gas-liquid conversion mechanism (1), the protection mechanism (4) is arranged on the left side of the inflation control mechanism (2), and the switching mechanism (3) is arranged at the top of the protection mechanism (4);

the gas-liquid conversion mechanism (1) comprises two liquid tanks (11) which are distributed in parallel, a base (12) is arranged below the liquid tanks (11), a vaporizer (13) is arranged on the side of each liquid tank (11), the vaporizer (13) converts liquid gas in the liquid tanks (11) into gas, and a first conveying pipe (14) is connected above the vaporizer (13);

inflation control mechanism (2) is including setting up support (23) in gas-liquid conversion mechanism (1) side, and support (23) upper surface is provided with control center (22), and control center (22) upper surface is provided with binary channels pump (21), and binary channels pump (21) inside is provided with two independent inflation assembly of each other, and binary channels pump (21) left side intercommunication has two second conveyer pipes (24), and the one end intercommunication diverter valve (21) of binary channels pump (21) are kept away from in second conveyer pipe (24).

2. The automatic gas mixture filling apparatus according to claim 1, wherein the switching mechanism (3) includes a switching valve (31) disposed on a left side of the dual-channel inflator (21), a first duct (311) is formed on a side of the switching valve (31) close to the dual-channel inflator (21), a second duct (312) is formed below the first duct (311), the first duct (311) and the second duct (312) both penetrate the switching valve (31) and reach a lower surface of the switching valve (31), a mounting hole (313) is formed on an upper surface of the switching valve (31), a second switching duct (315) is formed at a junction of the mounting hole (313) and the second duct (312), the second switching duct (315) communicates the first duct (311) and the second duct (312), a first switching duct (314) is formed at a junction of the mounting hole (313) and the first duct (311), the first switching channel (314) is communicated with the first conveying channel (311) and the second conveying channel (312), and the first switching channel (314) is similar to the second switching channel (315).

3. The automatic mixed gas filling device according to claim 2, wherein a sealing cover (32) is arranged at the top of the mounting hole (313), a first return spring (33) is arranged at the bottom of the sealing cover (32), a first valve body (34) is arranged at the bottom of the first return spring (33), an electromagnet (35) is arranged below the first valve body (34), the electromagnet (35) is arranged on the side wall of the mounting hole (313), a second valve body (36) is arranged below the electromagnet (35), a second return spring (37) is arranged on the bottom surface of the second valve body (36), and the second return spring (37) is arranged at the bottom of the mounting hole (313).

4. The automatic filling apparatus of claim 3, wherein the first valve body (34) has a first through hole (341) formed in a side wall thereof near the bottom, and the first valve body (34) has a second through hole (342) formed in a side wall thereof near the top, and the second through hole (342) is L-shaped.

5. The automatic mixture filling apparatus according to claim 4, wherein said first valve body (34) and said second valve body (36) are of the same size and have mirror-symmetrical configurations.

6. The automatic mixed gas filling device according to claim 1, wherein the protection mechanism (4) comprises a protection box (41) arranged below the switching valve (31), a protection cavity (411) is formed inside the protection box (41), a cover plate (46) in rotary connection is arranged on the side of the protection cavity (411), two symmetrically distributed inflation pipes (42) are arranged in the protection cavity (411), the inflation pipes (42) penetrate through the protection box (41) and are respectively communicated with the first conveying passage (311) and the second conveying passage (312), one side of the inflation pipes (42) far away from the top of the protection cavity (411) is connected with an inflation head (421), a pressure release valve (422) is arranged on the side of the inflation head (421), a connecting sealing hole (4211) is formed in the bottom of the inflation head (421), a gas storage bottle (43) is arranged below the inflation head (421), an inner cavity (431) is formed in the gas storage bottle (43), a switch valve (432) is arranged at the top of the gas storage bottle (43), a Y-shaped pipe (433) is arranged below the switch valve (432), and a mounting disc (437) is arranged below the Y-shaped pipe (433).

7. The automatic mixing gas filling apparatus according to claim 6, wherein three branched pipes are provided under the Y-shaped pipe (433), and the branched pipes are connected to the first gas pipe (434), the second gas pipe (435), and the third gas pipe (436) through the mounting plate (437).

8. The automatic mixed gas filling equipment according to claim 6, wherein the side surface of the first gas pipe (434) connected with the Y-shaped pipe (433) close to the bottom is provided with first gas holes (4341) distributed circumferentially, and the opening direction of the first gas holes (4341) is inclined upwards; the side surface of the connected second air pipe (435) close to the bottom is provided with second air holes (4351) which are distributed circumferentially, and the opening direction of the second air holes (4351) is horizontal; the side surface of the connected third air pipe (436) close to the bottom is provided with third air holes (4361) distributed circumferentially, and the opening direction of the third air holes (4361) is inclined downwards.

9. The automatic mixed gas filling device according to claim 6, wherein two support blocks (45) are arranged at the bottom of the protective box (41) in parallel, each support block (45) is provided with a sliding groove (451), a weighing plate (44) is arranged at the top of each support block (45), two sliding blocks (443) are arranged at the bottom of each weighing plate (44) in parallel, each sliding block (443) is matched with each sliding groove (451), two fixing sleeves (441) are arranged on the upper surface of each weighing plate (44) in parallel, each weighing table (442) is arranged at the bottom of each fixing sleeve (441), an air suction pump (47) is arranged on the outer side of the left side face of the protective box (41), each air suction pump (47) is provided with an air suction pipe (471) penetrating through the protective box (41), and each air suction pipe (471) is communicated with the air purification device.

10. The filling method of an automatic mixed gas filling apparatus according to any one of claims 1 to 9, wherein the filling method comprises the steps of:

s1, placing the gas storage bottle (43) into a protective box (41), and communicating the gas filling head (421) with the gas storage bottle (43);

s2, gasifying the two gases through the control center (22) and pumping the two gases into the switching valve (31) through the double-channel inflator pump (21);

s3, monitoring the gas amount filled into the gas storage bottle (43) by the weighing platform (442), and driving the electromagnet (35) to suck the first valve body (34) and the second valve body (36) after the gas filling is finished to finish the gas conveying switching;

s4, after inflation is completed, the control center (22) cuts off the electromagnet (35), the dual-channel inflation pump (21) is closed, and the first valve body (34) and the second valve body (36) reset under the driving of a reset spring;

s5, the control center (22) drives the pressure relief valve (422) to open, residual pressure is relieved, the air pump (47) is driven at the same time, residual mixed gas in the protection cavity (411) is evacuated, and the influence of the residual gas on workers is prevented.

Technical Field

The invention relates to the technical field of mixed gas filling, in particular to a mixed gas automatic filling method and a filling device thereof.

Background

There are many gas storage equipment in the reality and need store multiple mist, but current inflation equipment carries out multiple gas mixture mostly before aerifing, gas after will mixing fills the gas bomb again, this kind of filling equipment is owing to increased gas mixing device, lead to the inflation equipment mechanism complicated, the fault rate is high, and aerify and accomplish the back, because the gas density and the molecular mass of different components are different, the mixed gas in the gas bomb that leads to depositing for a long time can appear the layering phenomenon, need shake even equipment through dedicated mixing before the use and shake even back and just can use, use cost is increased, and shake even effect and can not guarantee. It is therefore desirable to design an inflator device that achieves gas mixing without the need for a mixing mechanism.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide an automatic mixed gas filling method and a filling apparatus thereof.

The purpose of the invention can be realized by the following technical scheme:

an automatic mixed gas filling device comprises a gas-liquid conversion mechanism, an inflation control mechanism, a switching mechanism and a protection mechanism, wherein the inflation control mechanism is arranged on the side of the gas-liquid conversion mechanism, the protection mechanism is arranged on the left side of the inflation control mechanism, and the switching mechanism is arranged at the top of the protection mechanism;

the gas-liquid conversion mechanism comprises two liquid tanks which are distributed in parallel, a base is arranged below the liquid tanks, a vaporizer is arranged on the side of the liquid tanks and converts liquid gas in the liquid tanks into gas, and a first conveying pipe is connected above the vaporizer;

the inflation control mechanism comprises a support arranged on the side of the gas-liquid conversion mechanism, a control center is arranged on the upper surface of the support, a double-channel inflator pump is arranged on the upper surface of the control center, two independent inflation assemblies are arranged inside the double-channel inflator pump, the left side of the double-channel inflator pump is communicated with two second conveying pipes, and one end of each second conveying pipe, far away from the corresponding double-channel inflator pump, is communicated with a switching valve.

Furthermore, the switching mechanism comprises a switching valve arranged on the left side of the dual-channel inflator pump, a first conveying channel is formed in one side, close to the dual-channel inflator pump, of the switching valve, a second conveying channel is formed below the first conveying channel, the first conveying channel and the second conveying channel penetrate through the switching valve and reach the lower surface of the switching valve, a mounting hole is formed in the upper surface of the switching valve, a second switching channel is formed at the junction of the mounting hole and the second conveying channel and is communicated with the first conveying channel and the second conveying channel, a first switching channel is formed at the junction of the mounting hole and the first conveying channel and is communicated with the first conveying channel and the second conveying channel, and the first switching channel is similar in structure to the second switching channel;

further, the top of the mounting hole is provided with a sealing cover, the bottom of the sealing cover is provided with a first reset spring, the bottom of the first reset spring is provided with a first valve body, an electromagnet is arranged below the first valve body and on the side wall of the mounting hole, a second valve body is arranged below the electromagnet, the bottom surface of the second valve body is provided with a second reset spring, and the second reset spring is arranged at the bottom of the mounting hole.

Furthermore, a first through hole is formed in the side wall, close to the bottom, of the first valve body, a second through hole is formed in the side wall, close to the top, of the first valve body, and the second through hole is L-shaped.

Further, the first valve body and the second valve body are the same in size and are mirror-symmetrical in structure.

Further, protection machanism is including setting up the protective housing in diverter valve below, the inside protection chamber that opens of protective housing, protection chamber side is provided with the apron of rotating the connection, the protection intracavity is provided with the gas tube of two symmetric distributions, the gas tube passes the protective housing respectively with first pipeline and second pipeline intercommunication, one side that the protection chamber top was kept away from to the gas tube is connected with the inflation head, inflation head side is provided with the relief valve, it has the connection seal hole to open the inflation head bottom, inflation head below is provided with the gas bomb, the inside inner chamber that opens of gas bomb, the gas bomb top is provided with the ooff valve, the ooff valve below is provided with the Y-pipe, the Y-pipe below is provided with the mounting disc.

Furthermore, three branched pipelines are arranged below the Y-shaped pipe and penetrate through the mounting disc to be connected with the first air pipe, the second air pipe and the third air pipe respectively.

Furthermore, the side surface of the first air pipe close to the bottom is provided with first air holes distributed circumferentially, the opening direction of the first air holes is inclined upwards, the side surface of the second air pipe close to the bottom is provided with second air holes distributed circumferentially, the opening direction of the second air holes is horizontal, the side surface of the third air pipe close to the bottom is provided with third air holes distributed circumferentially, and the opening direction of the third air holes is inclined downwards.

Further, the protective box bottom is provided with two parallel distribution's supporting shoe, and the supporting shoe is opened there is the spout, and the supporting shoe top is provided with weighing plate, and weighing plate bottom is provided with two parallel distribution's slider, slider and spout cooperation, and weighing plate upper surface is provided with two parallel distribution's fixed cover, and fixed cover bottom is provided with weighing platform, and protective box left surface outside is provided with the aspiration pump, and the aspiration pump is provided with the exhaust tube that runs through the protective box, aspiration tube and air purification device intercommunication.

Further, the filling steps are as follows:

s1, placing the gas storage bottle into a protective box, and communicating the gas filling head with the gas storage bottle;

s2, gasifying the two gases through the control center and pumping the two gases into the switching valve through a double-channel inflator pump;

s3, monitoring the gas amount filled into the gas storage bottle by the weighing platform, and driving the electromagnet to attract the first valve body and the second valve body after the gas filling is finished so as to finish the gas conveying switching;

s4, after inflation is completed, the control center cuts off the electromagnet, the dual-channel inflation pump is closed, and the first valve body and the second valve body reset under the driving of the reset spring;

s5, the control center drives the pressure release valve to open, releases the residual pressure, and drives the air pump to evacuate the residual mixed gas in the protection cavity, so that the influence of the residual gas on workers is prevented.

The invention has the beneficial effects that:

1. the switching mechanism designed by the invention is provided with the first valve body and the second valve body, the first valve body and the second valve body can be driven to act simultaneously through the electromagnet, the air passage switching in the process of inflating two gases is completed, the whole structure is simple and compact, and an additional mixing mechanism is not required to be added.

2. The air storage bottle designed by the invention is internally provided with the Y-pipe, the first air pipe, the second air pipe and the third air pipe, the bottom of each air pipe is provided with the air hole, the opening of the first air hole close to the upper part is inclined upwards, the opening of the second air hole close to the middle part is horizontal, and the opening of the third air hole close to the bottom is inclined downwards, so that the air can be uniformly dispersed in the air storage bottle in the inflation process, and the air is uniformly mixed in the inflation process. Meanwhile, when the mixed gas is stored for a long time and is layered due to different densities, the gas in the bottle can be mixed in the Y-shaped pipe and then discharged out of the bottle, and the practicability is enhanced.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without creative efforts;

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a left side view of the switching mechanism;

FIG. 3 is a cross-sectional view A-A of the switching mechanism;

FIG. 4 is a cross-sectional view of the switching valve;

FIG. 5 is a cross-sectional view B-B of the switching valve;

FIG. 6 is a partial cross-sectional view of the first valve body;

FIG. 7 is a cross-sectional view C-C of the first valve body;

FIG. 8 is an interior view of the guard mechanism;

FIG. 9 is a schematic structural view of the fill tube;

fig. 10 is a schematic view of the internal structure of the gas bomb 43;

FIG. 11 is an exploded schematic view of the internal piping of the air reservoir;

FIG. 12 is a partial schematic view of the guard mechanism;

fig. 13 is a partial exploded view of the shielding mechanism.

The reference numbers in the figures illustrate:

1. a gas-liquid conversion mechanism; 11. a liquid tank; 12. a base; 13. a vaporizer; 14. a first delivery pipe; 2. An inflation control mechanism; 21. a double-channel inflator pump; 22. a control center; 23. a support; 24. a second delivery pipe; 3. a switching mechanism; 31. a switching valve; 311. a first conveyance path; 312. a second conveyance path; 313. mounting holes; 314. a first switching lane; 315. a second switching channel; 32. a sealing cover; 33. a first return spring; 34. a first valve body; 341. a first through hole; 342. a second through hole; 35. an electromagnet; 36. a second valve body; 37. a second return spring; 4. a protection mechanism; 41. a protective box; 411. a protective cavity; 42. an inflation tube; 421. an inflation head; 4211. connecting the sealing holes; 422. a pressure relief valve; 43. a gas cylinder; 431. an inner cavity; 432. an on-off valve; 433. a Y-pipe; 434. a first air pipe; 4341. a first air hole; 435. a second air pipe; 4351. a second air hole; 436. a third air pipe; 4361. a third air hole; 437. mounting a disc; 44. A weighing plate; 441. fixing a sleeve; 442. a weighing platform; 443. a slider; 45. a support block; 451. a chute; 46. a cover plate; 47. an air pump; 471. and an air exhaust pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

An automatic mixed gas filling method and a filling device thereof comprise a gas-liquid conversion mechanism 1, an inflation control mechanism 2, a switching mechanism 3 and a protection mechanism 4.

As shown in fig. 1, an inflation control mechanism 2 is provided on the side of the gas-liquid conversion mechanism 1, a guard mechanism 4 is provided on the left side of the inflation control mechanism 2, and a switching mechanism 3 is provided on the top of the guard mechanism 4.

The gas-liquid conversion mechanism 1 comprises two liquid tanks 11 which are distributed in parallel, a base 12 is arranged below the liquid tanks 11, a vaporizer 13 is arranged on the side of the liquid tanks 11, the vaporizer 13 converts liquid gas in the liquid tanks 11 into gas, and a first conveying pipe 14 is connected above the vaporizer 13.

The inflation control mechanism 2 comprises a support 23 arranged on the side of the gas-liquid conversion mechanism 1, a control center 22 is arranged on the upper surface of the support 23, and a control button and a display screen are arranged on the control center 22, so that the inflation state can be detected in real time. The upper surface of the control center 22 is provided with a double-channel inflator pump 21, and two independent inflation assemblies are arranged inside the double-channel inflator pump 21 and can be controlled independently. Two second conveying pipes 24 are communicated with the left side of the double-channel inflator 21, and one end, far away from the double-channel inflator 21, of each second conveying pipe 24 is communicated with the switching valve 31.

As shown in fig. 1 to 5, the switching mechanism 3 includes a switching valve 31 disposed on the left side of the dual-path inflator 21, a first delivery passage 311 is formed on a side of the switching valve 31 close to the dual-path inflator 21, a second delivery passage 312 is formed below the first delivery passage 311, and both the first delivery passage 311 and the second delivery passage 312 pass through the switching valve 31 and reach the lower surface of the switching valve 31. The switching valve 31 has a mounting hole 313 on the upper surface thereof, and a second switching channel 315 is formed at the boundary between the mounting hole 313 and the second conveying channel 312. The second switching path 315 communicates the first conveying path 311 and the second conveying path 312 (shown in fig. 4 and 5). A first switching channel 314 is arranged at the junction of the mounting hole 313 and the first conveying channel 311, the first switching channel 314 is communicated with the first conveying channel 311 and the second conveying channel 312, and the structure of the first switching channel 314 is similar to that of the second switching channel 315.

The top of the mounting hole 313 is provided with a sealing cover 32, the bottom of the sealing cover 32 is provided with a first return spring 33, and the bottom of the first return spring 33 is provided with a first valve body 34. An electromagnet 35 is arranged below the first valve body 34, the electromagnet 35 is arranged on the side wall of the mounting hole 313, a second valve body 36 is arranged below the electromagnet 35, a second return spring 37 is arranged on the bottom surface of the second valve body 36, and the second return spring 37 is arranged at the bottom of the mounting hole 313.

As shown in fig. 6 and 7, a first through hole 341 is formed on the side wall of the first valve body 34 near the bottom, a second through hole 342 is formed on the side wall of the first valve body 34 near the top, and the second through hole 342 is L-shaped. The first valve body 34 and the second valve body 36 are the same size and have mirror images.

As shown in fig. 8 to 13, the protection mechanism 4 includes a protection box 41 disposed below the switching valve 31, a protection chamber 411 is opened inside the protection box 41, and a cover plate 46 rotatably connected to the side of the protection chamber 411. Two symmetrically distributed inflation tubes 42 are arranged in the protection cavity 411, the inflation tubes 42 penetrate through the protection box 41 and are respectively communicated with the first conveying passage 311 and the second conveying passage 312, one side, far away from the top of the protection cavity 411, of the inflation tubes 42 is connected with an inflation head 421, a pressure release valve 422 is arranged on the side of the inflation head 421, and a connecting sealing hole 4211 is formed in the bottom of the inflation head 421. An air storage bottle 43 is arranged below the air inflation head 421, an inner cavity 431 is formed in the air storage bottle 43, a switch valve 432 is arranged at the top of the air storage bottle 43, a Y-shaped pipe 433 is arranged below the switch valve 432, and a mounting disc 437 is arranged below the Y-shaped pipe 433.

Three branched pipelines are arranged below the Y-shaped pipe 433, and the branched pipelines pass through the mounting disc 437 and are respectively connected with the first air pipe 434, the second air pipe 435 and the third air pipe 436. The side surface of the first air pipe 434 close to the bottom is provided with first air holes 4341 distributed circumferentially, the opening direction of the first air holes 4341 is inclined upwards, the side surface of the second air pipe 435 close to the bottom is provided with second air holes 4351 distributed circumferentially, the opening direction of the second air holes 4351 is horizontal, the side surface of the third air pipe 436 close to the bottom is provided with third air holes 4361 distributed circumferentially, and the opening direction of the third air holes 4361 is inclined downwards.

The bottom of the protective box 41 is provided with two supporting blocks 45 which are distributed in parallel, the supporting blocks 45 are provided with sliding grooves 451, the top of the supporting blocks 45 is provided with a weighing plate 44, the bottom of the weighing plate 44 is provided with two sliding blocks 443 which are distributed in parallel, and the sliding blocks 443 are matched with the sliding grooves 451. The upper surface of the weighing plate 44 is provided with two fixing sleeves 441 which are distributed in parallel, the bottom of the fixing sleeve 441 is provided with a weighing table 442, the outer side of the left side surface of the protective box 41 is provided with an air suction pump 47, and the air suction pump 47 is provided with an air suction pipe 471 which penetrates through the protective box 41. The air suction pipe 471 is communicated with an air purifying device.

The device comprises the following steps:

s1, placing the gas storage bottle 43 into the protective box 41, and communicating the gas filling head 421 with the gas storage bottle 43.

S2, the two gases are vaporized by the control center 22 and pumped into the switching valve 31 through the dual channel inflator 21.

S3, the weighing platform 442 monitors the amount of gas filled into the gas bomb 43, and after the gas is filled, the electromagnet 35 can be driven to attract the first valve body 34 and the second valve body 36, so that the gas conveying switching is completed.

S4, after the inflation is finished, the control center 22 cuts off the electromagnet 35, the dual-channel inflator 21 is closed, and the first valve body 34 and the second valve body 36 are reset under the driving of the reset spring.

S5, the control center 22 drives the pressure relief valve 422 to open, residual pressure is relieved, the air pump 47 is driven at the same time, residual mixed gas in the protection cavity 411 is evacuated, and the influence of the residual gas on workers is prevented.

The examples are as follows:

the device simultaneously inflates both gas cylinders 43 at the time of inflation. Firstly, the weighing plate 44 is pulled out along the sliding groove 451, the gas storage bottle 43 is placed in the fixing sleeve 441, then the weighing plate 44 is moved into the protective cavity 411 along the sliding groove 451, the two gas filling heads 421 and the gas storage bottle 43 are respectively communicated, and then the cover plate 46 is closed. The vaporizer 13 is controlled by the control center 22 to change different types of liquid gas in the two liquid tanks 11 into gaseous state, and the gas is sent to the two-way inflator pump 21 through the two first delivery pipes 14, and two sets of independent inflation assemblies in the two-way inflator pump 21 can respectively send the two different types of gas to the switching valve 31 through the second delivery pipe 24. The two gases enter the first transportation path 311 and the second transportation path 312, respectively.

In the initial state, two gases are respectively used for inflating the two gas storage cylinders 43 through the first conveying passage 311 and the second conveying passage 312, at this time, the weighing platform 442 judges whether the gas storage cylinders 43 are full of gas or not through weighing, and after the gas storage cylinders are full of gas, the electromagnet 35 is driven to attract the first valve body 34 and the second valve body 36. At this time, the gas entering the first delivery passage 311 enters the first switching passage 314 after being switched by the first valve body 34, and finally enters the second delivery passage 312 through the first switching passage 314; the gas entering the second delivery passage 312 passes through the second valve body 36 into the second switching passage 315, and finally enters the first delivery passage 311. The exchange of the inflation is completed, so that the two gas storage cylinders 43 can be filled with two mixed gases. After the charging is completed, the electromagnet 35 is powered off, and the first valve body 34 and the second valve body 36 return to the initial positions under the action of the first return spring 33 and the second return spring 37.

In the inflation process, the three air outlets are formed in the gas storage bottle 43, the opening of the first air hole 4341 close to the upper part is inclined upwards, the opening of the second air hole 4351 close to the middle part is horizontal, and the opening of the third air hole 4361 close to the bottom part is inclined downwards, so that the flushed gas can be better mixed in the bottle during inflation.

After the gas is filled, when the traditional gas cylinder is used, the gas with high density can settle due to different densities and molecular masses of the mixed gas, so that the mixed gas is layered, and the use is influenced.

The beneficial effects are as follows:

the switching mechanism 3 designed by the invention is provided with the first valve body 34 and the second valve body 36, the first valve body 34 and the second valve body 36 can be driven to act simultaneously through the electromagnet 35, the air passage switching in the process of inflating two gases is completed, and the whole structure is simple and compact.

The air storage bottle 43 designed by the invention is internally provided with a Y-pipe 433, a first air pipe 434, a second air pipe 435 and a third air pipe 436, the bottom of each air pipe is provided with air holes, the opening of the first air hole 4341 close to the upper part is inclined upwards, the opening of the second air hole 4351 close to the middle part is horizontal, and the opening of the third air hole 4361 close to the bottom part is inclined downwards, so that the air can be uniformly dispersed in the air storage bottle 43 in the inflation process, and the air is uniformly mixed during the inflation process. Meanwhile, when the mixed gas is stored for a long time and is layered due to different densities, the gas in the bottle can be mixed in the Y-shaped pipe 433 and then discharged out of the bottle, and the practicability is enhanced.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.