Oxygen supply flow control device for medical oxygen bag

Abstract

The invention discloses a medical oxygen bag oxygen supply flow control device, and belongs to the technical field of oxygen bag oxygen supply flow control equipment, the medical oxygen bag oxygen supply flow control device comprises a protective shell, an air supply pipe, a flow adjusting mechanism, a heating box and a heating mechanism, an oxygen bag is placed in the protective shell, and the air supply pipe is connected with the internal oxygen bag; the flow adjusting mechanism comprises an electric cylinder, an upper roller, a lower roller and a downward pressing assembly, the downward pressing assembly is installed on the side face of the protective shell, the electric cylinder is connected with the downward pressing assembly, the downward pressing assembly is connected with the upper roller and the lower roller, and the upper roller and the lower roller are located on the upper side and the lower side of the air feeding pipe respectively; the air supply pipe is connected with the heating box, the heating mechanism comprises a fifth connecting rod, a rotating rod, a direction conversion assembly and a heating assembly, the fifth connecting rod is connected with the pressing assembly and connected with the rotating rod through the direction conversion assembly, the rotating rod is connected with the heating assembly, and the heating assembly is connected with the air supply pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of oxygen bag oxygen supply flow control equipment, and particularly discloses a medical oxygen bag oxygen supply flow control device. Background Art

[0002] As a portable oxygen supply device, the core function of a medical oxygen bag is to deliver the required oxygen to patients, and the core link in the oxygen delivery process lies in flow control; the essence of oxygen supply flow control is to stably release oxygen from the bag at a specific rate according to the treatment needs of patients, and the accuracy and stability of this rate directly determine the actual oxygen concentration reaching the patients and the treatment effect. In clinical applications, the oxygen flow requirements vary significantly under different disease conditions and different usage scenarios.

[0003] The patent with the publication number CN217612350U discloses a medical oxygen bag oxygen supply flow control device. The technical solution of this patent is as follows: It includes a pipe body. A guide cylinder is horizontally installed on one side of the pipe body. A regulating valve is provided in the guide cylinder. A valve seat connected to the regulating valve is horizontally connected to the inner wall of the pipe body. A filter is provided at the top end of the pipe body, and a heater is provided at the bottom end of the pipe body. An adjusting screw rod connected to the regulating valve is provided on one side of the guide cylinder. However, this patent cannot adjust the heating temperature of the flow rate of different required oxygen, which is likely to cause uneven heating when the flow rate is too large. Therefore, a medical oxygen bag oxygen supply flow control device is invented to address this defect. Summary of the Invention

[0004] In response to the above technical problems, the technical solution adopted by the present invention is: A medical oxygen bag oxygen supply flow control device includes a protective shell, an air supply pipe, a heating box, a flow rate adjusting mechanism, and a heating mechanism. An oxygen bag is placed inside the protective shell. The air supply pipe is connected to the oxygen bag inside the protective shell. The flow rate adjusting mechanism includes an electric cylinder, an upper roller, a lower roller, and a pressing-down component. The pressing-down component is installed on the side of the protective shell. The electric cylinder is connected to the pressing-down component. The pressing-down component is connected to the upper roller and the lower roller. The upper roller and the lower roller are respectively located on the upper and lower sides of the air supply pipe. A gas release valve is installed at the end of the air supply pipe away from the protective shell.

[0005] The air supply pipe is connected to the heating box. The heating mechanism includes a fifth connecting rod, a rotating rod, a direction conversion component, and a heating component. The fifth connecting rod is connected to the pressing-down component. The fifth connecting rod is connected to the rotating rod through the direction conversion component. The rotating rod is connected to the heating component. The heating component is connected to the air supply pipe.

[0006] Further, the pressing component includes an upper mounting plate and a lower mounting plate. Two rectangular through holes are provided on both the upper mounting plate and the lower mounting plate. Two fixing frames are fixedly installed on the upper side of the upper mounting plate. A first sliding groove is provided on the side surface of each fixing frame. A first sliding shaft is slidably installed on the inner wall of each first sliding groove. The first sliding shaft is rotatably connected to the upper roller. The upper roller is located in the rectangular through hole of the upper mounting plate and is slidably connected to the rectangular through hole of the upper mounting plate. The two first sliding shafts are connected by a third connecting rod. A vertical rod is fixedly installed on the lower side of the third connecting rod. The vertical rod passes through the upper mounting plate and the lower mounting plate and is slidably connected to the upper mounting plate and the lower mounting plate respectively. Two lower rods are fixedly installed on the lower side of the lower mounting plate. A second rotating shaft is rotatably installed on the side surface of each of the two lower rods. A lower roller is fixedly installed on the outer surface of each second rotating shaft. Each lower roller is located in a rectangular through hole of the lower mounting plate.

[0007] Further, a fourth connecting rod is rotatably installed on the side surface of the third connecting rod. One end of the fourth connecting rod away from the third connecting rod is slidably installed with a second connecting rod. One end of the second connecting rod away from the fourth connecting rod is slidably installed with a first connecting rod. A first rotating shaft is fixedly installed at one end of the first connecting rod away from the second connecting rod. A fixing block is rotatably installed on the side surface of the first rotating shaft. The fixing block is fixedly installed on the side surface of the protective shell.

[0008] Further, a gear is fixedly installed on the outer surface of the first rotating shaft. A rack is slidably installed on the side surface of the protective shell. The rack is engaged with the gear. The rack is fixedly connected to the telescopic end of the electric cylinder. The electric cylinder is fixedly installed on the upper side of the upper mounting plate.

[0009] Further, the direction conversion component includes a first connecting block. The first connecting block is fixedly installed on the third connecting rod. A first connecting shaft is fixedly installed on the side surface of the first connecting block. The first connecting shaft is rotatably connected to the fifth connecting rod. A second connecting shaft is fixedly installed on the side surface of the heating box. A turntable is rotatably installed on the outer surface of the turntable. The turntable is rotatably connected to one side of the second connecting shaft facing the heating box. A third connecting shaft is fixedly installed on the side surface of the turntable away from the heating box. A sixth connecting rod is rotatably installed on the outer surface of the third connecting shaft.

[0010] Further, a horizontal groove is provided on the side surface of the heating box. A fourth connecting shaft is fixedly installed on the inner wall of the horizontal groove. Two sliders are slidably installed on the outer surface of the fourth connecting shaft. Two sections of spring one are wound on the outer surface of the fourth connecting shaft. One end of the spring one on the outer surface of the fourth connecting shaft is fixedly installed on the outer surface of the fourth connecting shaft and the other end is fixedly installed on the side surface of the slider. A seventh connecting rod is slidably installed between the two sliders.

[0011] Further, a fifth connecting shaft is fixedly installed at one end of the seventh connecting rod. The fifth connecting shaft is rotatably installed on the side of the heating box. A sixth connecting shaft is fixedly installed on each side of the slider. An eighth connecting rod and a tenth connecting rod are respectively rotatably installed on the outer surfaces of the two sixth connecting shafts. The eighth connecting rod and the tenth connecting rod are connected by a ninth connecting rod. The eighth connecting rod and the tenth connecting rod are respectively slidably connected to the ninth connecting rod. A seventh connecting shaft is fixedly installed on the side of the tenth connecting rod. The seventh connecting shaft is rotatably connected to the sixth connecting rod.

[0012] Further, the heating assembly includes an eighth connecting shaft. The eighth connecting shaft is fixedly installed on the side of the fifth connecting shaft. The eighth connecting shaft penetrates through the heating box. A rotating rod is fixedly installed on the outer surface of the eighth connecting shaft. A plurality of first vertical shafts are fixedly installed at equal intervals on the lower side of the rotating rod. A section of spring two is fixedly installed on the inner wall of each first vertical shaft. A second vertical shaft is slidably installed on the inner wall of each first vertical shaft. The first vertical shaft and the second vertical shaft are connected by the spring two. A heating sheet is fixedly installed at the lower part of each second vertical shaft. A set of heating resistors and a heating circuit are respectively installed in each heating sheet. The heating circuit is electrically connected to the heating resistor.

[0013] The beneficial effects of the present invention compared with the prior art are: (1) The present invention realizes automatically adjusting the flow rate of oxygen outflow according to the required situation; (2) The present invention realizes adjusting the heating temperature according to the flow rate of oxygen outflow. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the connection relationship between the protective shell and the air supply pipe of the present invention.

[0016] Figure 3 It is Figure 2 The partial enlarged structural schematic diagram at position A in

[0017] Figure 4 It is Figure 2 The partial enlarged structural schematic diagram at position B in

[0018] Figure 5 It is a schematic diagram of the connection relationship between the air supply pipe and the heating box of the present invention.

[0019] Figure 6 It is Figure 5 The partial enlarged structural schematic diagram at position C in

[0020] Figure 7 It is Figure 5 The partial enlarged structural schematic diagram at position D in

[0021] Figure 8 It is a schematic diagram of the internal structure of the heating box of the present invention.

[0022] Figure 9 For Figure 8 Partial enlarged structural schematic diagram at position E in the figure.

[0023] Reference numerals in the drawings: 1 - protective shell; 2 - air supply pipe; 3 - flow regulating mechanism; 4 - heating box; 5 - heating mechanism; 301 - electric cylinder; 302 - rack; 303 - fixed block; 304 - first rotating shaft; 305 - gear; 306 - first connecting rod; 307 - second connecting rod; 308 - upper roller; 309 - fixed frame; 310 - first chute; 311 - first sliding shaft; 312 - third connecting rod; 313 - fourth connecting rod; 314 - lower roller; 315 - lower rod; 316 - second rotating shaft; 317 - upper mounting plate; 318 - lower mounting plate; 319 - vertical rod; 501 - first connecting block; 502 - first connecting shaft; 503 - fifth connecting rod; 504 - second connecting shaft; 505 - turntable; 506 - third connecting shaft; 507 - sixth connecting rod; 508 - horizontal groove; 509 - fourth connecting shaft; 510 - fifth connecting shaft; 511 - seventh connecting rod; 512 - slider; 513 - eighth connecting rod; 514 - ninth connecting rod; 515 - tenth connecting rod; 516 - sixth connecting shaft; 517 - seventh connecting shaft; 518 - rotating rod; 519 - eighth connecting shaft; 520 - first vertical shaft; 521 - second vertical shaft; 522 - heating sheet. Detailed implementation manners

[0024] The technical solutions of the present invention will be further described below in conjunction with and by way of specific implementation manners.

[0025] Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to this patent; in order to better illustrate the embodiments of the present invention, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual products; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0026] As shown in the attached Figure 1 ~ attached Figure 6As shown, an oxygen bag is placed inside the protective case 1. The air supply pipe 2 is connected to the oxygen bag inside the protective case 1. The flow rate regulating mechanism 3 includes an electric cylinder 301, an upper roller 308, a lower roller 314, and a pressing-down component. The pressing-down component is installed on the side of the protective case 1. The electric cylinder 301 is connected to the pressing-down component, and the pressing-down component is connected to the upper roller 308 and the lower roller 314. The upper roller 308 and the lower roller 314 are respectively located on the upper and lower sides of the air supply pipe 2. A gas release valve is installed at one end of the air supply pipe 2 away from the protective case 1. The air supply pipe 2 is connected to the heating box 4. The heating mechanism 5 includes a fifth connecting rod 503, a rotating rod 518, a direction conversion component, and a heating component. The fifth connecting rod 503 is connected to the pressing-down component. The fifth connecting rod 503 is connected to the rotating rod 518 through the direction conversion component. The rotating rod 518 is connected to the heating component. The heating component is connected to the air supply pipe 2. The air supply pipe 2 is made of rubber.

[0027] As shown in the attached Figure 2 ~ attached Figure 6 As shown, the pressing-down component includes an upper mounting plate 317 and a lower mounting plate 318. Two rectangular through holes are provided on both the upper mounting plate 317 and the lower mounting plate 318. Two fixing frames 309 are fixedly installed on the upper side of the upper mounting plate 317. A first sliding groove 310 is provided on the side of each fixing frame 309. A first sliding shaft 311 is slidably installed on the inner wall of each first sliding groove 310. The first sliding shaft 311 is rotatably connected to the upper roller 308. The upper roller 308 is located in the rectangular through hole of the upper mounting plate 317, and the upper roller 308 is slidably connected to the rectangular through hole of the upper mounting plate 317. The two first sliding shafts 311 are connected by a third connecting rod 312. A vertical rod 319 is fixedly installed on the lower side of the third connecting rod 312. The vertical rod 319 penetrates through the upper mounting plate 317 and the lower mounting plate 318, and the vertical rod 319 is slidably connected to the upper mounting plate 317 and the lower mounting plate 318 respectively. Two lower rods 315 are fixedly installed on the lower side of the lower mounting plate 318. A second rotating shaft 316 is rotatably installed on the side of each of the two lower rods 315. A lower roller 314 is fixedly installed on the outer surface of each second rotating shaft 316. Each lower roller 314 is respectively located in a rectangular through hole of the lower mounting plate 318.

[0028] As shown in the attached Figure 3 ~ attached Figure 8As shown in the figure, a fourth link 313 is rotatably installed on the side of the third link 312. A second link 307 is slidably installed at one end of the fourth link 313 away from the third link 312. A first link 306 is slidably installed at one end of the second link 307 away from the fourth link 313. A first rotating shaft 304 is fixedly installed at one end of the first link 306 away from the second link 307. A fixed block 303 is rotatably installed on the side of the first rotating shaft 304, and the fixed block 303 is fixedly installed on the side of the protective shell 1. A gear 305 is fixedly installed on the outer surface of the first rotating shaft 304. A rack 302 is slidably installed on the side of the protective shell 1. The rack 302 meshes with the gear 305. The rack 302 is fixedly connected to the telescopic end of the electric cylinder 301. The electric cylinder 301 is fixedly installed above the upper mounting plate 317. According to the required flow rate in the usage scenario, the electric cylinder 301 and the valve on the air supply pipe 2 are started. The electric cylinder 301 drives the gear 305 to rotate through the rack 302. The gear 305 drives the first link 306 to rotate through the first rotating shaft 304. The first link 306 drives the fourth link 313 to move through the second link 307. The fourth link 313 drives the vertical rod 319 to descend along the upper mounting plate 317 and the lower mounting plate 318. When the vertical rod 319 descends, it drives the first sliding shaft 311 to descend along the first chute 310 through the third link 312, thereby driving the upper roller 308 to descend. The flow rate of oxygen passing through the air supply pipe 2 is adjusted by the extrusion of the upper roller 308 on the air supply pipe 2.

[0029] As shown in the attached Figure 4 ~ attached Figure 9As shown in the figure, the direction conversion component includes a first connection block 501, which is fixedly installed on the third connecting rod 312. A first connection shaft 502 is fixedly installed on the side surface of the first connection block 501. The first connection shaft 502 is rotatably connected to a fifth connecting rod 503. A second connection shaft 504 is fixedly installed on the side surface of the heating box 4. A turntable 505 is rotatably installed on the outer surface of the turntable 505. The turntable 505 is rotatably connected to the side of the second connection shaft 504 facing the heating box 4. A third connection shaft 506 is fixedly installed on the side surface of the turntable 505 away from the heating box 4. A sixth connecting rod 507 is rotatably installed on the outer surface of the third connection shaft 506; a horizontal groove 508 is provided on the side surface of the heating box 4. A fourth connection shaft 509 is fixedly installed on the inner wall of the horizontal groove 508. Two sliders 512 are slidably installed on the outer surface of the fourth connection shaft 509. Two sections of spring one are wound around the outer surface of the fourth connection shaft 509. One end of the spring one on the outer surface of the fourth connection shaft 509 is fixedly installed on the outer surface of the fourth connection shaft 509 and the other end is fixedly installed on the side surface of the slider 512. A seventh connecting rod 511 is slidably installed between the two sliders 512. At the same time, the heating circuit in the heating sheet 522 is activated. When the third connecting rod 312 descends, it drives the first connection shaft 502 to move through the first connection block 501. The first connection shaft 502 drives the turntable 505 to rotate counterclockwise through the fifth connecting rod 503. The turntable 505 drives the sixth connecting rod 507 to move through the third connection shaft 506. The sixth connecting rod 507 drives the slider 512 to slide leftward along the horizontal groove 508 through the seventh connection shaft 517, thereby driving the seventh connecting rod 511 to rotate clockwise along the fifth connection shaft 510.

[0030] As shown in the attached Figure 5 ~ attached Figure 9As shown in the figure, a fifth connecting shaft 510 is fixedly installed at one end of a seventh connecting rod 511. The fifth connecting shaft 510 is rotatably installed on the side of the heating box 4. A sixth connecting shaft 516 is fixedly installed on each side of each slider 512. An eighth connecting rod 513 and a tenth connecting rod 515 are respectively rotatably installed on the outer surfaces of the two sixth connecting shafts 516. The eighth connecting rod 513 and the tenth connecting rod 515 are connected by a ninth connecting rod 514. The eighth connecting rod 513 and the tenth connecting rod 515 are respectively slidably connected to the ninth connecting rod 514. A seventh connecting shaft 517 is fixedly installed on the side of the tenth connecting rod 515. The seventh connecting shaft 517 is rotatably connected to the sixth connecting rod 507; The heating assembly includes an eighth connecting shaft 519. The eighth connecting shaft 519 is fixedly installed on the side of the fifth connecting shaft 510. The eighth connecting shaft 519 penetrates through the heating box 4. A rotating rod 518 is fixedly installed on the outer surface of the eighth connecting shaft 519. A plurality of first vertical shafts 520 are fixedly installed at equal intervals on the lower side of the rotating rod 518. A section of spring two is fixedly installed on the inner wall of each first vertical shaft 520. A second vertical shaft 521 is slidably installed on the inner wall of each first vertical shaft 520. The first vertical shaft 520 and the second vertical shaft 521 are connected by the spring two. A heating sheet 522 is fixedly installed on the lower part of each second vertical shaft 521. A set of heating resistors and heating circuits are respectively installed in each heating sheet 522. The heating circuit is electrically connected to the heating resistor. In the initial state, the lower surface of the upper roller 308 just contacts the air supply pipe 2. At this time, all the heating sheets 522 contact the air supply pipe 2. When the seventh connecting rod 511 rotates, it drives the eighth connecting shaft 519 to rotate clockwise through the fifth connecting shaft 510. The eighth connecting shaft 519 drives different heating sheets 522 to gradually separate from the air supply pipe 2, so as to reduce the heating temperature when the flow rate decreases.

[0031] The working principle of the present invention is as follows.

[0032] (1) According to the required flow rate in the use scenario, the flow cylinder 301 and the valve on the air supply pipe 2 are started. The cylinder 301 drives the gear 305 to rotate through the rack 302. The gear 305 drives the first connecting rod 306 to rotate through the first rotating shaft 304. The first connecting rod 306 drives the fourth connecting rod 313 to move through the second connecting rod 307. The fourth connecting rod 313 drives the vertical rod 319 to descend along the upper mounting plate 317 and the lower mounting plate 318. When the vertical rod 319 descends, it drives the first sliding shaft 311 to descend along the first chute 310 through the third connecting rod 312, and then drives the upper roller 308 to descend. The flow rate of oxygen passing through the air supply pipe 2 is adjusted by the extrusion of the upper roller 308 on the air supply pipe 2.

[0033] (2) Meanwhile, the heating circuit inside the heating sheet 522 is activated. Through the heating circuit, when the third connecting rod 312 descends, it drives the first connecting shaft 502 to move through the first connecting block 501. The first connecting shaft 502 drives the turntable 505 to rotate counterclockwise through the fifth connecting rod 503. The turntable 505 drives the sixth connecting rod 507 to move through the third connecting shaft 506. The sixth connecting rod 507 drives the slider 512 to slide leftward along the horizontal groove 508 through the seventh connecting shaft 517, thereby driving the seventh connecting rod 511 to rotate clockwise along the fifth connecting shaft 510.

[0034] (3) When the seventh connecting rod 511 rotates, it drives the eighth connecting shaft 519 to rotate clockwise through the fifth connecting shaft 510. The eighth connecting shaft 519 drives different heating sheets 522 to gradually disengage from the air supply pipe 2, thereby reducing the heating temperature when the flow rate decreases.

[0035] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A medical oxygen bag oxygen supply flow control device, comprising a protective shell (1), an air supply pipe (2) and a heating box (4), characterized in that: It also includes a flow regulating mechanism (3) and a heating mechanism (5). An oxygen bag is placed inside the protective shell (1). The air supply pipe (2) is connected to the oxygen bag inside the protective shell (1). The flow regulating mechanism (3) includes an electric cylinder (301), an upper roller (308), a lower roller (314) and a pressing-down assembly. The pressing-down assembly is installed on the side of the protective shell (1). The electric cylinder (301) is connected to the pressing-down assembly. The pressing-down assembly is connected to the upper roller (308) and the lower roller (314). The upper roller (308) and the lower roller (314) are respectively located on the upper and lower sides of the air supply pipe (2). A gas release valve is installed at one end of the air supply pipe (2) away from the protective shell (1). The air supply pipe (2) is connected to the heating box (4). The heating mechanism (5) includes a fifth connecting rod (503), a rotating rod (518), a direction conversion assembly and a heating assembly. The fifth connecting rod (503) is connected to the pressing-down assembly. The fifth connecting rod (503) is connected to the rotating rod (518) through the direction conversion assembly. The rotating rod (518) is connected to the heating assembly. The heating assembly is connected to the air supply pipe (2).

2. The oxygen supply flow control device for a medical oxygen bag according to claim 1, characterized in that: The pressing-down assembly includes an upper mounting plate (317) and a lower mounting plate (318). Two rectangular through holes are provided on both the upper mounting plate (317) and the lower mounting plate (318). Two fixing frames (309) are fixedly installed on the upper side of the upper mounting plate (317). A first sliding groove (310) is provided on the side of each fixing frame (309). A first sliding shaft (311) is slidably installed on the inner wall of each first sliding groove (310). The first sliding shaft (311) is rotatably connected to the upper roller (308). The upper roller (308) is located in the rectangular through hole of the upper mounting plate (317). The upper roller (308) is slidably connected to the rectangular through hole of the upper mounting plate (317). The two first sliding shafts (311) are connected by a third connecting rod (312). A vertical rod (319) is fixedly installed on the lower side of the third connecting rod (312). The vertical rod (319) passes through the upper mounting plate (317) and the lower mounting plate (318). The vertical rod (319) is slidably connected to the upper mounting plate (317) and the lower mounting plate (318) respectively. Two lower rods (315) are fixedly installed on the lower side of the lower mounting plate (318). A second rotating shaft (316) is rotatably installed on the side of each of the two lower rods (315). A lower roller (314) is fixedly installed on the outer surface of each second rotating shaft (316). Each lower roller (314) is respectively located in a rectangular through hole of the lower mounting plate (318).

3. The oxygen supply flow control device for a medical oxygen bag according to claim 1, wherein: A fourth connecting rod (313) is rotatably installed on the side of the third connecting rod (312). A second connecting rod (307) is slidably installed at one end of the fourth connecting rod (313) away from the third connecting rod (312). A first connecting rod (306) is slidably installed at one end of the second connecting rod (307) away from the fourth connecting rod (313). A first rotating shaft (304) is fixedly installed at one end of the first connecting rod (306) away from the second connecting rod (307). A fixing block (303) is rotatably installed on the side of the first rotating shaft (304). The fixing block (303) is fixedly installed on the side of the protective shell (1).

4. The oxygen supply flow control device for a medical oxygen bag according to claim 3, characterized in that: A gear (305) is fixedly installed on the outer surface of the first rotating shaft (304). A rack (302) is slidably installed on the side surface of the protective shell (1). The rack (302) meshes with the gear (305). The rack (302) is fixedly connected to the telescopic end of the electric cylinder (301). The electric cylinder (301) is fixedly installed on the upper side of the upper mounting plate (317).

5. The oxygen supply flow control device for a medical oxygen bag according to claim 3, wherein: The direction conversion assembly includes a first connecting block (501). The first connecting block (501) is fixedly installed on the third connecting rod (312). A first connecting shaft (502) is fixedly installed on the side surface of the first connecting block (501). The first connecting shaft (502) is rotatably connected to the fifth connecting rod (503). A second connecting shaft (504) is fixedly installed on the side surface of the heating box (4). A turntable (505) is rotatably installed on the outer surface of the turntable (505). The turntable (505) is rotatably connected to one side of the second connecting shaft (504) facing the heating box (4). A third connecting shaft (506) is fixedly installed on the side surface of the turntable (505) away from the heating box (4). A sixth connecting rod (507) is rotatably installed on the outer surface of the third connecting shaft (506).

6. The oxygen supply flow control device for a medical oxygen bag according to claim 5, wherein: A horizontal groove (508) is provided on the side surface of the heating box (4). A fourth connecting shaft (509) is fixedly installed on the inner wall of the horizontal groove (508). Two sliders (512) are slidably installed on the outer surface of the fourth connecting shaft (509). Two sections of spring one are wound around the outer surface of the fourth connecting shaft (509). One end of the spring one on the outer surface of the fourth connecting shaft (509) is fixedly installed on the outer surface of the fourth connecting shaft (509), and the other end is fixedly installed on the side surface of the slider (512). A seventh connecting rod (511) is slidably installed between the two sliders (5,12).

7. The oxygen supply flow control device for a medical oxygen bag according to claim 6, characterized in that: One end of the seventh connecting rod (511) is fixedly installed with a fifth connecting shaft (510). The fifth connecting shaft (510) is rotatably installed on the side surface of the heating box (4). A sixth connecting shaft (516) is fixedly installed on the side surface of each slider (512). An eighth connecting rod (513) and a tenth connecting rod (515) are rotatably installed on the outer surfaces of the two sixth connecting shafts (516) respectively. The eighth connecting rod (513) and the tenth connecting rod (515) are connected by a ninth connecting rod (514). The eighth connecting rod (513) and the tenth connecting rod (515) are slidably connected to the ninth connecting rod (514) respectively. A seventh connecting shaft (517) is fixedly installed on the side surface of the tenth connecting rod (515). The seventh connecting shaft (517) is rotatably connected to the sixth connecting rod (507).

8. A medical oxygen bag oxygen supply flow control device according to claim 7, characterized in that: The heating component includes an eighth connecting shaft (519) which is fixedly installed on the side of the fifth connecting shaft (510). The eighth connecting shaft (519) penetrates through the heating box (4). A rotating rod (518) is fixedly installed on the outer surface of the eighth connecting shaft (519). A plurality of first vertical shafts (520) are fixedly installed at equal intervals on the lower side of the rotating rod (518). A section of spring two is fixedly installed on the inner wall of each first vertical shaft (520). A second vertical shaft (521) is slidably installed on the inner wall of each first vertical shaft (520). The first vertical shaft (520) and the second vertical shaft (521) are connected by the spring two. A heating sheet (522) is fixedly installed on the lower part of each second vertical shaft (521). A set of heating resistors and a heating circuit are installed in each heating sheet (522). The heating circuit is electrically connected to the heating resistor.

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