Oxygen generator with high dosing precision

Abstract

The invention discloses an oxygen generator with high drug delivery precision, and relates to the technical field of oxygen generators. The problem of constant proportion is solved. The device specifically comprises a shell and a top cover fixed to the top of the shell, a control panel used for controlling electrical elements is arranged at the top of the top cover, an oxygen generation mechanism is arranged in the shell, an oxygen outlet of the oxygen generation mechanism is connected with an oxygen transition tank fixed in the shell, a medicine storage assembly is arranged on one side of the shell, and a medicine storage cavity is formed in the other side of the shell. A linkage type fluid driving mechanism which pumps oxygen from the oxygen transition tank and pumps liquid medicine from the medicine storage assembly at the same time is arranged in the shell, and an outlet of the linkage type fluid driving mechanism is connected with a three-way pipe fixed to the top cover. The two fluid driving assemblies are used for conveying oxygen and liquid medicine respectively, and the two fluid driving assemblies are linked through the stepless speed change assembly, so that the drug delivery speeds of the two fluid driving assemblies are correlated, the proportion of drug delivery to oxygen delivery is constant, and the suction type treatment effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of oxygen concentrators, and in particular to an oxygen concentrator with high drug delivery accuracy. Background Art

[0002] Medical oxygen concentrators use molecular sieve technology to separate oxygen from the air, and then output the separated oxygen for oxygen therapy or medication therapy for patients with respiratory diseases or critically ill patients.

[0003] After searching, the Chinese patent publication number CN113244488B discloses a medical molecular sieve oxygen concentrator with atomization treatment function, including an oxygen concentrator body, a set of universal wheels are arranged at the four corners of the bottom surface of the oxygen concentrator body, a medicine liquid atomization mechanism is arranged on one side of the upper end of the oxygen concentrator body, a medicine replenishing mechanism is arranged on the front side of the oxygen concentrator body, and a storage and cleaning mechanism is arranged on the side of the upper end of the oxygen concentrator body away from the medicine liquid atomization mechanism.

[0004] The above patent has the following deficiencies: it utilizes the oxygen generator body to supply oxygen and then utilizes the water pump to deliver the medicine, which is then atomized and mixed for inhalation treatment. This requires that the oxygen supply and drug delivery amount need to be individually electrically controlled by the oxygen production speed of the oxygen generator body and the delivery speed of the water pump, and the electrical control will have a certain upper and lower error, which causes the concentration of the medicine relative to oxygen in the final mixture to fluctuate, resulting in poor effect.

[0005] To this end, the present invention provides an oxygen concentrator with high drug delivery accuracy. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an oxygen concentrator with high drug delivery accuracy.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] An oxygen concentrator with high drug delivery accuracy comprises a shell and a top cover fixed on the top of the shell.

[0009] A control panel for controlling electrical components is provided on the top of the top cover, an oxygen generator is provided inside the shell, an oxygen outlet of the oxygen generator is connected to an oxygen transition tank fixed inside the shell, a medicine storage assembly is provided on one side of the shell, a linkage type fluid driving mechanism for simultaneously extracting oxygen from the oxygen transition tank and extracting liquid medicine from the medicine storage assembly is provided inside the shell, the outlet of the linkage type fluid driving mechanism is connected to a three-way pipe fixed to the top cover, and the outlet of the three-way pipe is connected to a mask through a connecting hose and an intermittent control valve;

[0010] The linkage type fluid drive mechanism comprises two groups of fluid drive components and one group of continuously variable speed components, wherein the fluid drive component comprises an annular shell fixed to the inner wall of the housing and an elastic hose fixed to the inner wall of the annular shell and having both ends passing through the annular shell, wherein the inner wall of the annular shell is rotatably connected to a main shaft, a bracket is fixed to the outer wall of the main shaft, and a plurality of rollers that are in contact with and squeezed with the elastic hose are rotatably connected to the outer inner wall of the bracket;

[0011] One end of one of the elastic hoses is connected to the medicine storage assembly, and the other end of the elastic hose is connected to the three-way pipe; one end of the other elastic hose is connected to the oxygen transition tank, and the other end of the elastic hose is connected to the three-way pipe;

[0012] The continuously variable transmission assembly includes two frustum rollers respectively fixed to the ends of two main shafts and a transmission belt frictionally transmitted to the outer walls of the two frustum rollers, and one of the frustum rollers is fixedly connected to a drive motor, which is fixed to the inner wall of the shell by bolts.

[0013] Preferably: the continuously variable transmission assembly further comprises an adjusting motor and a slide, and the outer walls of the slide located on both sides of the transmission belt are rotatably connected to two limiting rollers that are contacted and limited with the transmission belt.

[0014] Furthermore: the slide is slidably connected to the inner side of the shell through a guide rod, the adjusting motor is fixed to the inner wall of the shell through bolts, and a screw is fixed to the outer wall of the output shaft of the adjusting motor, and the screw is connected to the inner wall of the slide through threads.

[0015] On the basis of the above-mentioned solution: an atomizer is arranged at the interface where the three-way pipe is connected to the medicine storage component.

[0016] A better solution among the above solutions is: the medicine storage component includes a medicine suction tube fixed to the side wall of the shell and an internal threaded cover fixedly sleeved on the outer wall of the medicine suction tube, the inner wall of the medicine suction tube is clamped with a cotton plug and the inner wall of the internal threaded cover is threadedly connected to a medicine storage tank for storing medicine solution.

[0017] As a further solution of the present invention: the medicine suction tube is inserted into the bottom of the medicine storage tank, and the other end of the medicine suction tube is connected to the elastic hose.

[0018] At the same time, the intermittent control valve includes a valve housing and channel one and channel two opened on the inner wall of the valve housing, the two ends of the channel one are respectively connected to the mask and the connecting hose, and the two ends of the channel two are respectively connected to the mask and the atmospheric environment.

[0019] As a preferred embodiment of the present invention: a valve plate is slidably connected to the inner wall of the second channel, and a hollow frame for limiting the position of the valve plate is fixed to the inner wall of the second channel.

[0020] At the same time, the inner wall of the valve plate is provided with through holes which are arranged in an alternating manner above the second channel.

[0021] As a more optimal solution of the present invention: the inner wall of the second channel is fixedly connected with two spring electrodes connected in series to the power supply circuit of the driving motor, and the inner wall of the valve plate is fixed with a "U"-shaped conductive column that contacts and cooperates with the two spring electrodes.

[0022] The beneficial effects of the present invention are:

[0023] 1. The present invention utilizes two groups of fluid drive components to deliver oxygen and liquid medicine respectively, and the two groups of fluid drive components are linked by a continuously variable speed component, so that the drug delivery speeds of the two are related to each other, and the ratio of drug delivery to oxygen delivery is constant, thereby increasing the inhalation treatment effect.

[0024] 2. In the present invention, the fluid driving assembly delivers medicine and oxygen through the squeezing of the elastic hose by the roller and the elastic recovery of the elastic hose itself, so that oxygen and liquid medicine only come into contact with the elastic hose during the drug delivery process, thereby preventing oxygen or liquid medicine from being contaminated by the "pump" component and increasing the safety of drug delivery.

[0025] 3. The present invention, based on the linkage of the frustum roller and the transmission belt, can change the transmission ratio of the two frustum rollers by moving the position of the transmission belt, thereby changing the speed ratio of oxygen supply and drug administration, and realizing targeted adjustment of the drug administration ratio.

[0026] 4. The present invention, by configuring the medicine storage assembly as a combination of an internal threaded cover and a medicine storage tank, enables the medicine storage tank to be disassembled and installed simply by twisting it when the medicine solution needs to be replaced or supplemented, thereby increasing the convenience of operation.

[0027] 5. The present invention, by setting up intermittent oxygen supply and drug administration, is in line with the respiratory alternation characteristics of the human body, thereby preventing waste of oxygen and liquid medicine. At the same time, by utilizing the movement of the through hole and the coordination of the spring electrode and the "U"-shaped conductive column, the opening and closing of the driving motor can be automatically controlled according to the gas flow of breathing, which simplifies the control logic and can also be in line with different breathing lengths and breathing alternation frequencies. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of an oxygen concentrator with high drug delivery accuracy proposed by the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of a linkage type fluid driving mechanism of an oxygen concentrator with high drug delivery accuracy proposed by the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of a fluid drive component of an oxygen concentrator with high drug delivery accuracy proposed by the present invention;

[0031] Figure 4This is a schematic diagram of the structure of a continuously variable speed component of an oxygen concentrator with high drug delivery accuracy proposed by the present invention;

[0032] Figure 5 This is a schematic diagram of the installation position structure of an atomizer of an oxygen concentrator with high drug delivery accuracy proposed by the present invention;

[0033] Figure 6 A schematic cross-sectional view of an intermittent control valve for an oxygen concentrator with high dosing accuracy proposed by the present invention Figure 1 ;

[0034] Figure 7 A schematic cross-sectional view of an intermittent control valve for an oxygen concentrator with high dosing accuracy proposed by the present invention Figure 2 ;

[0035] Figure 8 This is a schematic diagram of the structure of a medicine storage component of an oxygen concentrator with high drug delivery accuracy proposed by the present invention.

[0036] In the figure: 1, shell; 2, oxygen generator; 3, control panel; 4, top cover; 5, mask; 6, intermittent control valve; 7, connecting hose; 8, medicine storage assembly; 9, three-way pipe; 10, linkage type fluid drive mechanism; 11, oxygen transition tank; 12, fluid drive assembly; 13, stepless speed change assembly; 14, ring shell; 15, elastic hose; 16, roller; 17, bracket;

[0037] 18. Spindle; 19. Cone roller; 20. Adjustment motor; 21. Screw rod; 22. Guide rod;

[0038] 23. Slide; 24. Limit roller; 25. Drive belt; 26. Atomizer; 27. Channel 1; 28. Valve housing; 29. ​​Channel 2; 30. Through hole; 31. Valve plate; 32. Hollow frame; 33. Spring electrode; 34. "U"-shaped conductive column; 35. Drug suction tube; 36. Internal thread cover; 37. Drug storage tank; 38. Cotton plug; 39. Drive motor. DETAILED DESCRIPTION

[0039] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] Embodiment 1:

[0042] An oxygen concentrator with high drug delivery accuracy, such as Figure 1-Figure 8As shown, it includes a shell 1 and a top cover 4 fixed to the top of the shell 1, a control panel 3 for controlling electrical components is arranged on the top of the top cover 4, an oxygen generator 2 is arranged inside the shell 1, and since the oxygen generator 2 is a prior art, this embodiment does not make creative work on it, so it is not described in detail, the oxygen outlet of the oxygen generator 2 is connected to an oxygen transition tank 11 fixed inside the shell 1, a medicine storage assembly 8 is arranged on one side of the shell 1, and a linkage type fluid driving mechanism 10 is arranged inside the shell 1 for simultaneously drawing oxygen from the oxygen transition tank 11 and drawing liquid medicine from the medicine storage assembly 8, the outlet of the linkage type fluid driving mechanism 10 is connected to a three-way pipe 9 fixed to the top cover 4, and the outlet of the three-way pipe 9 is connected to a mask 5 through a connecting hose 7 and an intermittent control valve 6.

[0043] The linkage type fluid drive mechanism 10 includes two groups of fluid drive components 12 and a group of continuously variable transmission components 13. The fluid drive component 12 includes an annular shell 14 fixed to the inner wall of the shell 1 and an elastic hose 15 fixed to the inner wall of the annular shell 14 and with both ends passing through the annular shell 14. The inner wall of the annular shell 14 is rotatably connected to a main shaft 18, and a bracket 17 is fixed to the outer wall of the main shaft 18. The outer inner wall of the bracket 17 is rotatably connected to a plurality of rollers 16 that are in contact with and squeezed with the elastic hose 15.

[0044] One end of one of the elastic hoses 15 is connected to the medicine storage assembly 8 , and the other end of the elastic hose 15 is connected to the three-way pipe 9 ; one end of the other elastic hose 15 is connected to the oxygen transition tank 11 , and the other end of the elastic hose 15 is connected to the three-way pipe 9 .

[0045] The continuously variable transmission assembly 13 includes two conical rollers 19 respectively fixed to the ends of two main shafts 18 and a transmission belt 25 frictionally transmitted to the outer walls of the two conical rollers 19, and one of the conical rollers 19 is fixedly connected to a drive motor 39, which is fixed to the inner wall of the housing 1 by bolts.

[0046] When the device is in use, the oxygen generator 2 is started to generate oxygen and is placed in the oxygen transition tank 11 for temporary storage. When inhalation oxygen therapy is performed, the drive motor 39 is started, and the drive motor 39 drives one of the frustum rollers 19 to rotate, thereby driving the two frustum rollers 19 to rotate synchronously through the transmission belt 25. The rotation of the frustum roller 19 can drive the bracket 17 to rotate, thereby driving the roller 16 to roll along the elastic hose 15. The elastic hose 15 is squeezed and deformed, and the oxygen or liquid medicine in the elastic hose 15 is transported to the three-way pipe 9. The elastic hose 15 after being squeezed recovers its elasticity and generates negative pressure, thereby inhaling oxygen or liquid medicine from the oxygen transition tank 11 or the medicine storage component 8. The oxygen and liquid medicine transported respectively by the two elastic hoses 15 are mixed through the three-way pipe 9 and input into the mask 5 through the connecting hose 7 and the intermittent control valve 6, and then the patient performs inhalation therapy through the mask 5.

[0047] The device utilizes two groups of fluid drive components 12 to deliver oxygen and liquid medicine respectively, and the two groups of fluid drive components 12 are linked by a continuously variable speed component 13, so that the drug delivery speeds of the two are related to each other, and the ratio of drug delivery to oxygen delivery is constant, thereby increasing the inhalation treatment effect.

[0048] In addition, the fluid drive assembly 12 of the device delivers medication and oxygen through the squeezing of the elastic hose 15 by the roller 16 and the elastic recovery of the elastic hose 15 itself, so that oxygen and liquid medicine only come into contact with the elastic hose 15 during the medication process, thereby preventing oxygen or liquid medicine from being contaminated by the "pump" component and increasing the safety of medication.

[0049] In order to solve the problem of ratio regulation / dosing concentration regulation; Figure 4 As shown, the continuously variable transmission assembly 13 also includes an adjusting motor 20 and a slide 23. The outer walls of the slide 23 located on both sides of the transmission belt 25 are rotatably connected to two limit rollers 24 that are contacted and limited with the transmission belt 25. The slide 23 is slidably connected to the inner side of the shell 1 through a guide rod 22. The adjusting motor 20 is fixed to the inner wall of the shell 1 by bolts, and a screw rod 21 is fixed to the outer wall of the output shaft of the adjusting motor 20, and the screw rod 21 is connected to the inner wall of the slide 23 by threads.

[0050] When the adjustment motor 20 is started, it can drive the screw 21 to rotate, thereby driving the slide 23 to move along the axial direction of the guide rod 22 through the threaded connection, and then the transmission belt 25 is limited by the limiting roller 24 to make the transmission belt 25 move along the axial direction of the frustum roller 19, thereby changing the transmission radius of the two frustum rollers 19 and changing the transmission ratio. Combined with the feeding speed of the fluid drive component 12 being related to the rotation speed of the frustum roller 19, the dosage concentration can be adjusted.

[0051] The device, based on the linkage between the frustum roller 19 and the transmission belt 25, can change the transmission ratio of the two frustum rollers 19 by moving the position of the transmission belt 25, thereby changing the speed ratio of oxygen supply and drug administration, and realizing targeted adjustment of the drug administration ratio.

[0052] To solve the problem of treatment effect; Figure 5 As shown, an atomizer 26 is provided at the interface where the three-way pipe 9 is connected to the medicine storage assembly 8 .

[0053] When the liquid medicine transported through the medicine storage assembly 8 enters the three-way pipe 9, it will be atomized by the atomizer 26 and then mixed with oxygen, thereby increasing the atomization treatment effect.

[0054] In order to solve the problem of convenience; Figure 8As shown, the medicine storage component 8 includes a medicine suction tube 35 fixed to the side wall of the shell 1 and an internal threaded cover 36 fixedly sleeved on the outer wall of the medicine suction tube 35, the inner wall of the medicine suction tube 35 is clamped with a cotton plug 38 and the inner wall of the internal threaded cover 36 is threadedly connected to a medicine storage tank 37 for storing liquid medicine, the medicine suction tube 35 is inserted into the bottom of the medicine storage tank 37, and the other end of the medicine suction tube 35 is connected to the elastic hose 15.

[0055] The device, by configuring the medicine storage assembly 8 as a combination of an internal threaded cover 36 and a medicine storage tank 37, enables disassembly and installation to be completed by simply twisting the medicine storage tank 37 when the medicine solution needs to be replaced or supplemented, thereby increasing the convenience of operation.

[0056] When the present embodiment is in use, the oxygen production mechanism 2 is started to generate oxygen and is placed in the oxygen transition tank 11 for temporary storage. When inhalation oxygen therapy is performed, the drive motor 39 is started, and the drive motor 39 drives one of the cone rollers 19 to rotate, thereby driving the two cone rollers 19 to rotate synchronously through the transmission belt 25. The rotation of the cone roller 19 can drive the bracket 17 to rotate, thereby driving the roller 16 to roll along the elastic hose 15. The elastic hose 15 is squeezed and deformed, and the oxygen or liquid medicine in the elastic hose 15 is transported to the three-way pipe 9. The elastic hose 15 after being squeezed recovers elasticity and generates negative pressure, thereby inhaling oxygen or liquid medicine from the oxygen transition tank 11 or the medicine storage component 8. The oxygen and liquid medicine transported respectively by the two elastic hoses 15 are mixed through the three-way pipe 9. It is then input to the mask 5 through the connecting hose 7 and the intermittent control valve 6, and then the patient performs inhalation therapy through the mask 5. When the adjustment motor 20 is started, it can drive the screw 21 to rotate, thereby driving the slide 23 to move axially along the guide rod 22 through the threaded connection, and then the transmission belt 25 is limited by the limiting roller 24 to make the transmission belt 25 move axially along the frustum roller 19, thereby changing the transmission radius of the two frustum rollers 19 and changing the transmission ratio. Combined with the feeding speed of the fluid drive component 12 being related to the rotation speed of the frustum roller 19, the drug concentration can be adjusted, and the drug solution transported by the drug storage component 8 will be first atomized by the nebulizer 26 and then mixed with oxygen when entering the three-way pipe 9, thereby increasing the atomization therapy effect.

[0057] Embodiment 2:

[0058] An oxygen concentrator with high drug delivery accuracy, such as Figure 1-Figure 8 As shown, in order to solve the intermittent delivery problem; this embodiment makes the following improvements on the basis of embodiment 1: the intermittent control valve 6 includes a valve housing 28 and a channel 1 27 and a channel 2 29 opened on the inner wall of the valve housing 28, the two ends of the channel 1 27 are respectively connected to the mask 5 and the connecting hose 7, and the two ends of the channel 2 29 are respectively connected to the mask 5 and the atmospheric environment.

[0059] The inner wall of the second channel 29 is slidably connected with a valve plate 31 , the inner wall of the second channel 29 is fixed with a hollow frame 32 for limiting the valve plate 31 , and the inner wall of the valve plate 31 is provided with through holes 30 arranged alternately with the upper part of the second channel 29 .

[0060] The inner wall of the second channel 29 is fixedly connected with two spring electrodes 33 connected in series to the power supply circuit of the driving motor 39 , and the inner wall of the valve plate 31 is fixed with a “U”-shaped conductive column 34 contacting and matching with the two spring electrodes 33 .

[0061] When the present embodiment is in use, since the fluid drive assembly 12 adopts the conveying mode of the elastic hose 15 and the roller 16, it has a reverse self-locking property for the inhalation suction force of the human body. Therefore, in the inhalation stage, air will first be taken in from the second channel 29, and the through hole 30 will move upward under the action of the gas, so that the "U"-shaped conductive column 34 will contact the spring electrode 33, and the two spring electrodes 33 will be conducted by the "U"-shaped conductive column 34, and the driving motor 39 will be started to supply air. At the same time, since the through hole 30 is staggered above the second channel 29, the through hole 30 will be tightly attached to the second channel 29 to achieve end face sealing, and no air will be inhaled from the outside. When in the exhalation state, due to the reverse self-locking of the fluid drive assembly 12, the exhaled air will act on the through hole 30 from the second channel 29, so that the through hole 30 moves downward. At the same time, the second channel 29 is conducted, the spring electrode 33 is separated from the "U"-shaped conductive column 34, and the driving motor 39 is powered off.

[0062] This device, by setting up intermittent oxygen supply and drug administration, conforms to the respiratory alternation characteristics of the human body and prevents waste of oxygen and liquid medicine. At the same time, by utilizing the movement of the through hole 30 and the cooperation of the spring electrode 33 and the "U"-shaped conductive column 34, the opening and closing of the drive motor 39 can be automatically controlled according to the flow of respiratory gas, which simplifies the control logic and can also conform to different breathing lengths and breathing alternation frequencies.

[0063] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An oxygen concentrator with high drug delivery accuracy, comprising a housing (1) and a top cover (4) fixed to the top of the housing (1), characterized in that: A control panel (3) for controlling the electrical components is arranged on the top of the top cover (4); an oxygen generator (2) is arranged inside the shell (1); an oxygen outlet of the oxygen generator (2) is connected to an oxygen transition tank (11) fixed inside the shell (1); a medicine storage assembly (8) is arranged on one side of the shell (1); a linkage type fluid driving mechanism (10) is arranged inside the shell (1) for simultaneously extracting oxygen from the oxygen transition tank (11) and extracting liquid medicine from the medicine storage assembly (8); an outlet of the linkage type fluid driving mechanism (10) is connected to a three-way pipe (9) fixed to the top cover (4); and an outlet of the three-way pipe (9) is connected to a mask (5) through a connecting hose (7) and an intermittent control valve (6); The linkage type fluid drive mechanism (10) comprises two groups of fluid drive components (12) and one group of continuously variable speed components (13), wherein the fluid drive component (12) comprises an annular shell (14) fixed to the inner wall of the housing (1) and an elastic hose (15) fixed to the inner wall of the annular shell (14) and having both ends passing through the annular shell (14), wherein the inner wall of the annular shell (14) is rotatably connected to a main shaft (18), the outer wall of the main shaft (18) is fixed to a bracket (17), and the outer inner wall of the bracket (17) is rotatably connected to a plurality of rollers (16) which are in contact with and pressed against the elastic hose (15); One end of one of the elastic hoses (15) is connected to the medicine storage assembly (8), and the other end of the elastic hose (15) is connected to the three-way pipe (9); one end of the other elastic hose (15) is connected to the oxygen transition tank (11), and the other end of the elastic hose (15) is connected to the three-way pipe (9); The continuously variable transmission assembly (13) comprises two conical rollers (19) respectively fixed to the ends of two main shafts (18) and a transmission belt (25) frictionally driven on the outer walls of the two conical rollers (19), and one of the conical rollers (19) is fixedly connected to a drive motor (39), and the drive motor (39) is fixed to the inner wall of the housing (1) by bolts.

2. The oxygen concentrator with high drug delivery accuracy according to claim 1, characterized in that: The continuously variable transmission assembly (13) further comprises an adjusting motor (20) and a slide (23), wherein the outer walls of the slide (23) located on both sides of the transmission belt (25) are rotatably connected to two limit rollers (24) that are contact-limited with the transmission belt (25).

3. The oxygen concentrator with high drug delivery accuracy according to claim 2, characterized in that: The slide (23) is slidably connected to the inner side of the housing (1) via a guide rod (22); the adjustment motor (20) is fixed to the inner wall of the housing (1) via bolts; a screw rod (21) is fixed to the outer wall of the output shaft of the adjustment motor (20); and the screw rod (21) is connected to the inner wall of the slide (23) via threads.

4. The oxygen concentrator with high drug delivery accuracy according to claim 1, characterized in that: An atomizer (26) is provided at the interface where the three-way pipe (9) is connected to the medicine storage assembly (8).

5. The oxygen concentrator with high drug delivery accuracy according to claim 1, characterized in that: The medicine storage component (8) comprises a medicine suction tube (35) fixed to the side wall of the housing (1) and an internal threaded cover (36) fixedly sleeved on the outer wall of the medicine suction tube (35); a cotton plug (38) is clamped on the inner wall of the medicine suction tube (35) and a medicine storage tank (37) for storing liquid medicine is connected to the inner wall of the internal threaded cover (36) via a thread.

6. The oxygen concentrator with high drug delivery accuracy according to claim 5, characterized in that: The medicine suction tube (35) is inserted into the bottom of the medicine storage tank (37), and the other end of the medicine suction tube (35) is connected to the elastic hose (15).

7. The oxygen concentrator with high drug delivery accuracy according to claim 1, characterized in that: The intermittent control valve (6) comprises a valve housing (28) and a channel 1 (27) and a channel 2 (29) opened on the inner wall of the valve housing (28), wherein the two ends of the channel 1 (27) are respectively connected to the mask (5) and the connecting hose (7), and the two ends of the channel 2 (29) are respectively connected to the mask (5) and the atmospheric environment.

8. The oxygen concentrator with high drug delivery accuracy according to claim 7, characterized in that: The inner wall of the second channel (29) is slidably connected to a valve plate (31), and the inner wall of the second channel (29) is fixed with a hollow frame (32) for limiting the position of the valve plate (31).

9. The oxygen concentrator with high drug delivery accuracy according to claim 8, characterized in that: The inner wall of the valve plate (31) is provided with through holes (30) arranged in an alternating manner above the second channel (29).

10. The oxygen concentrator with high drug delivery accuracy according to claim 9, characterized in that: The inner wall of the second channel (29) is fixedly connected to two spring electrodes (33) connected in series to the power supply circuit of the drive motor (39), and the inner wall of the valve plate (31) is fixedly provided with a "U"-shaped conductive column (34) contacting and matching the two spring electrodes (33).

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