Oxygen generator miniature pressure regulating valve assembly capable of reducing gas path loss and control method

Abstract

The invention relates to the technical field of oxygenerators, in particular to an oxygenerator miniature pressure regulating valve assembly capable of reducing gas path loss and a control method.The oxygenerator miniature pressure regulating valve assembly comprises an oxygenerator body and a pipeline assembly, one end of the oxygenerator body is fixedly connected with a containing table, the right side of the pipeline assembly is fixedly connected with a pressure collecting assembly, and the right side of the pressure collecting assembly is fixedly connected with a pressure returning assembly; the pressure returning assembly comprises an air storage cylinder, a flow dividing opening is formed in the position, close to the left end, of the air storage cylinder, a first rubber sealing ring is fixedly connected to the front end of the air storage cylinder, an air storage column groove is formed in the inner side of the air storage cylinder, and a movable circular plate is embedded in the inner side of the air storage column groove; according to the device, pressure can be actively supplemented, the pressure change of an air path can be responded in real time, the pressure is increased by returning and storing oxygen, the insufficient output pressure of the oxygen generator is made up, the pressure flow attenuation is avoided, various oxygen inhalation requirements are met, and the oxygen inhalation effect is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of oxygen concentrator technology, specifically to a miniature pressure regulating valve assembly and control method for oxygen concentrators that can reduce gas path losses. Background Technology

[0002] An oxygen concentrator is a device that separates and purifies oxygen from the air through physical or chemical means. It can increase the oxygen concentration to a standard that meets the needs of use, providing a continuous and stable oxygen supply for people with hypoxia or in specific scenarios, helping to improve hypoxia symptoms and protect respiratory health. It is easy to operate and has a wide range of applications. The compact pressure regulating valve assembly of the oxygen concentrator adopts a compact structure and optimized flow path design. Some are even integrally cast with the adsorption tower cover. It can accurately regulate the pressure of oxygen output by the oxygen concentrator. Its sealing structure and adaptability to high concentration oxygen can reduce gas leakage and pressure loss, ensuring stable oxygen delivery and reducing equipment power consumption. At the same time, its compact size makes it easy to install and is suitable for portable oxygen concentrators and other scenarios, helping to improve the overall operating efficiency and reliability of the oxygen concentrator. The miniature pressure regulating valve of an oxygen concentrator is mainly adapted to high-pressure operating conditions. Its core function is to accurately adjust the excessively high output oxygen pressure to ensure stable oxygen supply parameters. However, this component does not have a pressure compensation function. When the oxygen pressure output by the oxygen concentrator itself is too low, it cannot actively increase the pressure to make up for the deficiency. As a result, the oxygen output pressure and flow rate are continuously lower than the set standard, which makes it difficult to meet the oxygen needs of patients, high-altitude users and other groups, and directly affects the oxygen inhalation effect. Therefore, in order to address the above problems, a miniature pressure regulating valve component and control method for oxygen concentrators that can reduce gas path loss is proposed. Summary of the Invention

[0003] The purpose of this invention is to provide a micro pressure regulating valve assembly and control method for an oxygen generator that can reduce gas path losses, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A miniature pressure regulating valve assembly for an oxygen concentrator that reduces gas path loss includes an oxygen concentrator body and a piping assembly. A holding platform is fixedly connected to one end of the oxygen concentrator body. A pressure gathering assembly is fixedly connected to the right side of the piping assembly. A back pressure assembly is fixedly connected to the right side of the pressure gathering assembly. A movable component and an auxiliary component are installed inside the pressure gathering assembly. The back pressure assembly includes an air storage cylinder. A diversion port is opened near the left end of the air storage cylinder. A first rubber sealing ring is fixedly connected to the front end of the air storage cylinder. An air storage column groove is opened inside the air storage cylinder. A movable circular plate is embedded inside the air storage column groove. A second rubber sealing ring is fixedly connected to the outside of the movable circular plate. A servo electric cylinder is fixedly connected near the rear end of the air storage cylinder. A push plate is fixedly connected to the end of the piston rod of the servo electric cylinder.

[0005] As a further optimization of the present application, wherein: the pressure collecting assembly comprises a fixed table, the bottom end of the fixed table is fixedly connected with the containing table through bolts, the top end of the fixed table is fixedly connected with a vertical cylinder, the left end of the vertical cylinder is provided with an assembly opening, a pressure detector is installed on the inner side of the assembly opening, and the assembly opening is fixedly connected with the right side of the pipeline assembly.

[0006] As a further optimization of the present application, wherein: the inner side of the vertical cylinder is provided with a gas storage groove, the right side of the gas storage groove is fixedly connected with a fixed nozzle, the top end of the vertical cylinder is fixedly connected with a horizontal cylinder, the gas storage groove is in communication with the inner side of the horizontal cylinder, and the horizontal cylinder is fixedly connected between the gas storage groove and the gas storage column groove.

[0007] As a further optimization of the present application, wherein: the front end of the horizontal cylinder is fixedly connected with a first rubber sealing gasket, the front end of the horizontal cylinder is fixedly connected with a sealing plate through bolts, the sealing plate is attached to the first rubber sealing gasket, the inner side of the horizontal cylinder is fixedly connected with a blocking ring, and the inner side of the blocking ring is a hollow structure.

[0008] As a further optimization of the present application, wherein: the movable assembly comprises a column cylinder, the inner side of the column cylinder is provided with an embedded hole, the inner side of the embedded hole is fixedly connected with a rubber duckbill valve, and the outer side of the column cylinder is fixedly connected with a third rubber sealing ring.

[0009] As a further optimization of the present application, wherein: the column cylinder slides in the inner side of the horizontal cylinder, the outer side of the third rubber sealing ring is attached to the inner side of the horizontal cylinder, and the column cylinder is located between the auxiliary assembly and the blocking ring.

[0010] As a further optimization of the present application, wherein: the auxiliary assembly comprises a positioning plate, the inner side of the positioning plate is fixedly connected with a plug-in cylinder, an electric hydraulic rod, and a limiting telescopic rod, the outer side of the positioning plate is fixedly connected to the inner side of the gas storage column groove, the piston rod tail end of the electric hydraulic rod and the piston rod tail end of the limiting telescopic rod are both fixedly connected with an inner hole plate, the inner side of the inner hole plate is provided with a movable opening, and the inner hole plate is magnetically repulsive to the column cylinder.

[0011] As a further optimization of the present application, wherein: the inner side of the plug-in cylinder is provided with a blind hole and a flow discharge hole, the flow discharge hole is in communication with the blind hole, and the flow discharge hole is in communication with the inner side of the horizontal cylinder.

[0012] As a further optimization of the present application, wherein: the center of the plug-in cylinder is aligned with the center of the rubber duckbill valve front and back, and the peripheral diameter of the plug-in cylinder is half of the inner peripheral diameter of the front end of the rubber duckbill valve.

[0013] Control method of micro pressure regulating valve assembly of oxygen generator capable of reducing gas path loss Step one: the oxygen pipe is fixed and sealed with the fixed nozzle, the oxygen output by the oxygen generator body through the pipeline assembly enters the inside of the assembly port and the gas storage tank, the gas storage tank enters the inside of the horizontal cylinder, after a certain pressure is generated in the inside of the gas storage tank, the oxygen in the inside of the gas storage tank is output through the fixed nozzle and the oxygen pipe, when the pressure in the inside of the gas storage tank and the horizontal cylinder is too high, the oxygen flows through the blocking ring, the gas pressure and the sealing effect of the third rubber sealing ring on the cylinder and the horizontal cylinder, the cylinder moves, the rubber duckbill valve is inserted into the inside of the insertion cylinder, the insertion cylinder extrudes the rubber duckbill valve, the rear end of the rubber duckbill valve is deformed, the insertion cylinder extends out of the inside of the rubber duckbill valve, the drain hole is communicated with the inside of the horizontal cylinder at the rear end of the cylinder, and the gas in the inside of the horizontal cylinder enters the inside of the drain hole; Step two: the oxygen discharged from the inside of the blind hole enters the inside of the gas storage cylinder through the shunt, the pressure in the inside of the gas storage cylinder increases, the movable circular plate moves, the movable circular plate discharges the gas from the inside of the gas storage cylinder when moving, and the second rubber sealing ring seals the movable circular plate and the gas storage cylinder; Step three: the pressure sensor in the inside of the vertical cylinder detects the pressure in the inside of the vertical cylinder, the pressure sensor and the servo cylinder are electrically connected with the integrated controller, the servo cylinder is started, the piston rod of the servo cylinder pushes the push disc to move, after the push disc contacts with the movable circular plate, the movable circular plate is driven to move forward, under the sealing of the second rubber sealing ring, the oxygen in the inside of the gas storage cylinder is pushed to enter the inside of the horizontal cylinder through the shunt, the inside of the horizontal cylinder enters the inside of the rubber duckbill valve, the port at the rear end of the rubber duckbill valve is opened, and the oxygen enters the inside of the gas storage tank through the inside of the horizontal cylinder.

[0014] Compared with the prior art, the beneficial effects of the present application are: 1、In the present application, by setting the cylinder, rubber duckbill valve, positioning plate, insertion cylinder and drain hole, the device realizes pressure relief and reset by magnetic repulsive force, replacing the traditional spring adjustment mode, completely avoiding the problem of spring force attenuation caused by long-term stress or frequent compression, effectively ensuring the stability of the set pressure of the pressure relief valve assembly, and significantly prolonging the service life of the set pressure function of the pressure relief valve assembly; 2、In the present application, by setting the shunt, gas storage cylinder, movable circular plate, second rubber sealing ring and servo cylinder, the device successfully realizes efficient collection and stable storage of oxygen after pressure relief, relying on the optimized sealing structure and precise component cooperation, which can not only lock the stored oxygen tightly, effectively prevent waste and gas pressure loss caused by gas leakage, but also isolate external air, moisture and impurities, avoiding oxygen deterioration during storage from the source; 3、The device has precise controllable active pressure compensation function, can respond to air path pressure change in real time, actively improves air path pressure through scientific feedback storage oxygen, efficiently compensates for the insufficient output pressure of the oxygen generator, avoids pressure and flow decay problems from the source, ensures that the pressure and flow of oxygen output are always stable and continuously meet the set standard, fully meets the diversified oxygen demand of different groups of patients, plateau workers and other different groups of people, and fully guarantees the oxygen inhalation effect and respiratory health. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the application; Figure 2 It is a schematic diagram of the holding table structure of the application; Figure 3 It is a schematic diagram of the cross-section structure of the back pressure assembly of the application; Figure 4 It is a schematic diagram of the explosion structure of the back pressure assembly of the application; Figure 5 It is a schematic diagram of the cross-section structure of the pressure collecting assembly of the application; Figure 6 It is a schematic diagram of the cross-section structure of the pressure collecting assembly of the application; Figure 7 It is a schematic diagram of the fixed table structure of the application; Figure 8 It is a schematic diagram of the A structure of the application; Figure 7 Figure 9 It is a schematic diagram of the cross-section structure of the movable assembly of the application.

[0016] In the figure: 1, oxygen generator body; 2, pipeline assembly; 3, holding table; 4, pressure collecting assembly; 41, fixed table; 42, vertical cylinder; 43, gas storage groove; 44, assembly opening; 45, fixed nozzle; 46, horizontal cylinder; 47, sealing plate; 48, retaining ring; 49, first rubber sealing gasket; 5, back pressure assembly; 51, gas storage cylinder; 52, flow divider; 53, first rubber sealing ring; 54, gas storage column groove; 55, movable circular plate; 56, second rubber sealing ring; 57, servo cylinder; 58, push disc; 6, movable assembly; 61, cylinder; 62, built-in hole; 63, rubber duckbill valve; 64, third rubber sealing ring; 7, auxiliary assembly; 71, positioning plate; 72, insertion cylinder; 73, blind hole; 74, flow hole; 75, electric hydraulic rod; 76, limiting telescopic rod; 77, inner hole plate; 78, movable opening. DETAILED DESCRIPTION

[0017] ​With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0018] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0019] Please refer to Figures 1-9 The present application provides a technical solution: The oxygen generator micro pressure regulating valve assembly and control method can reduce air path loss, comprising an oxygen generator body 1 and a pipeline assembly 2. The oxygen generator body 1 is fixedly connected with a containing table 3 at one end. The pipeline assembly 2 is fixedly connected with a pressure collecting assembly 4 at the right side. The pressure collecting assembly 4 is fixedly connected with a back pressure assembly 5 at the right side. The pressure collecting assembly 4 is internally installed with a movable assembly 6 and an auxiliary assembly 7. The back pressure assembly 5 comprises a gas cylinder 51. The gas cylinder 51 is provided with a shunt 52 at a position close to the left end. The gas cylinder 51 is fixedly connected with a first rubber sealing ring 53 at the front end. The gas cylinder 51 is internally provided with a gas storage column groove 54. The gas storage column groove 54 is internally embeddedly installed with a movable circular plate 55. The movable circular plate 55 is fixedly connected with a second rubber sealing ring 56 at the outer side. The gas cylinder 51 is fixedly connected with a servo cylinder 57 at a position close to the rear end. The servo cylinder 57 is fixedly connected with a push disc 58 at the end of the piston rod.

[0020] As a further embodiment of the present application, the pressure collecting assembly 4 comprises a fixed table 41. The fixed table 41 is fixedly connected with the containing table 3 at the bottom end through bolts. The fixed table 41 is fixedly connected with a vertical cylinder 42 at the top end. The vertical cylinder 42 is provided with an assembly opening 44 at the left end. The assembly opening 44 is internally installed with a pressure detector. The assembly opening 44 is fixedly connected with the right side of the pipeline assembly 2. Through the above-mentioned setting, the bolt connection mode makes the assembly of the fixed table 41 and the containing table 3 firm, reliable, and convenient to disassemble, maintain and reduce the later maintenance cost. The pressure detector integrated on the vertical cylinder 42 can capture the air path pressure data in real time, provide accurate basis for subsequent pressure regulation and active pressure compensation, avoid the fluctuation of oxygen supply parameters caused by pressure monitoring lag, ensure the timeliness and accuracy of pressure control from the source, and ensure that the output oxygen always meets the use standard; As a further implementation of the scheme, the inside of the vertical cylinder 42 is provided with a gas storage groove 43, the right side of the gas storage groove 43 is fixedly connected with a fixed nozzle 45, the top end of the vertical cylinder 42 is fixedly connected with a horizontal cylinder 46, the gas storage groove 43 is in communication with the inside of the horizontal cylinder 46, the horizontal cylinder 46 is fixedly connected between the horizontal cylinder 46 and the gas storage cylinder 51, the horizontal cylinder 46 is communicated with the gas storage column groove 54 through the flow dividing port 52 close to the front end, through the above setting, the inside of the gas storage groove 43 and the horizontal cylinder 46 is communicated to design a reasonable gas flow path, to ensure smooth oxygen delivery and reduce pressure loss, the communication structure of the horizontal cylinder 46 and the gas storage column groove 54 through the flow dividing port 52 provides a necessary channel for efficient recovery and storage of oxygen after pressure relief, avoiding waste caused by direct discharge of high-pressure oxygen; The overall integrated flow path layout makes the component structure more compact, meets the installation requirements of the portable oxygen generator, and improves the stability of the gas path operation; As a further implementation of the scheme, the front end of the horizontal cylinder 46 is fixedly connected with a first rubber sealing gasket 49, the front end of the horizontal cylinder 46 is fixedly connected with a cover plate 47 through bolts, the cover plate 47 is in contact with the first rubber sealing gasket 49, the inside of the horizontal cylinder 46 is fixedly connected with a stop ring 48, the inside of the stop ring 48 is a hollow structure, through the above setting, the contact design of the cover plate 47 and the first rubber sealing gasket 49 is matched with the bolt fixing to form a reliable front end sealing structure, which effectively prevents pressure drop and oxygen loss caused by gas leakage, the hollow structure of the stop ring 48 can not only ensure the smooth flow of oxygen in the horizontal cylinder 46, but also guide the gas to be relieved according to the preset path when the pressure is too high, avoiding local pressure abnormalities caused by disordered gas flow, providing structural support for the orderly progress of the pressure relief process, and improving the stability of pressure regulation; As a further implementation of the scheme, the movable assembly 6 includes a cylinder 61, an inner hole 62 is formed in the inside of the cylinder 61, a rubber duckbill valve 63 is fixedly connected to the inside of the inner hole 62, and a third rubber sealing ring 64 is fixedly connected to the outside of the cylinder 61, through the above setting, the fixed connection of the inner hole 62 to the rubber duckbill valve 63 ensures the assembly stability of the pressure relief key component, avoids pressure relief failure caused by component loosening under high pressure, and the third rubber sealing ring 64 on the outside of the cylinder 61 can enhance the sealing performance between it and the inside of the horizontal cylinder 46, prevent gas leakage from the cooperation gap during pressure regulation, and ensure the pressure regulation accuracy; The structure design makes the movable assembly 6 form a modular unit with independent functions, which is convenient for production and assembly and individual maintenance, and improves the maintainability of the product; As a further implementation of the scheme, the cylinder 61 slides inside the horizontal cylinder 46, the third rubber sealing ring 64 is tightly attached to the inner side of the horizontal cylinder 46, and the cylinder 61 is located between the auxiliary assembly 7 and the retaining ring 48. Through the above arrangement, the sliding fit of the cylinder 61 inside the horizontal cylinder 46 provides flexible movement space for pressure relief and reset action, ensuring timely response to pressure changes. The tight fit of the third rubber sealing ring 64 with the inner side of the horizontal cylinder 46 further enhances the sealing effect of the gas circuit, reduces gas loss during pressure adjustment, and ensures the accuracy of pressure control. The position layout of the cylinder 61 between the auxiliary assembly 7 and the retaining ring 48 makes the magnetic repulsion force and the conduction of gas pressure form a reasonable cooperation, providing mechanical conditions for pressure relief triggering and automatic reset, and improving the reliability of pressure regulating action; As a further implementation of the scheme, the auxiliary assembly 7 includes a positioning plate 71, the positioning plate 71 is fixedly connected with a plug cylinder 72, an electric hydraulic rod 75 and a limiting telescopic rod 76 on the inner side, and the positioning plate 71 is fixedly connected on the inner side of the gas storage column groove 54 on the outer side. The piston rod end of the electric hydraulic rod 75 and the piston rod end of the limiting telescopic rod 76 are fixedly connected with an inner hole plate 77, the inner hole plate 77 is provided with a movable port 78 on the inner side, and the inner hole plate 77 is magnetically repulsive with the cylinder 61. Through the above arrangement, the integrated fixation of the positioning plate 71 to the plug cylinder 72, the electric hydraulic rod 75 and the limiting telescopic rod 76 realizes the modular layout of the components, improves the structural stability of the auxiliary assembly 7, and prevents the pressure relief setting from failing to use due to pressure failure. The design of the electric hydraulic rod 75 and the limiting telescopic rod 76 jointly connecting the inner hole plate 77 can make the output of magnetic repulsion force more balanced and stable, avoid the uneven stress problem caused by single driving, replace the traditional spring with magnetic repulsion force to realize reset, solve the problem of spring force attenuation after long-term use, significantly prolong the service life of the pressure regulating valve assembly, and ensure the long-term stability of the pressure relief setting pressure; As a further implementation of the scheme, the plug cylinder 72 is provided with a blind hole 73 and a leakage hole 74 on the inner side, the leakage hole 74 communicates with the blind hole 73, and the leakage hole 74 communicates with the inner side of the horizontal cylinder 46. Through the above arrangement, the communication structure of the blind hole 73 and the leakage hole 74 constructs a dedicated flow channel for pressure relief gas, so that the high-pressure oxygen in the horizontal cylinder 46 can enter the storage unit according to the preset path, providing structural guarantee for the recycling of oxygen. The design of the channel avoids the mutual interference of pressure relief gas and normal gas conveying path, ensures the pressure stability of normal oxygen supply during pressure relief process, improves the utilization rate of oxygen, and reduces resource waste; As a further implementation of the scheme, the center of the plug-in cylinder 72 is aligned with the center of the rubber duckbill valve 63, and the outer diameter of the plug-in cylinder 72 is half of the inner diameter of the front end of the rubber duckbill valve 63. Through the above setting, the center alignment design ensures that the rubber duckbill valve 63 can be precisely matched when inserted into the plug-in cylinder 72, avoiding misalignment that can cause sealing failure or pressure relief jam, improving the smoothness and reliability of the pressure relief action. The reasonable ratio of the diameter size makes the plug-in cylinder 72 inserted into the rubber duckbill valve 63 through the extrusion effect to realize the deformation sealing of the rear end of the rubber duckbill valve 63, ensuring the smooth passage during pressure relief.

[0021] Workflow: In use, the oxygen pipe is fixed and sealed with the fixed nozzle 45, the oxygen output by the oxygen generator body 1 through the pipeline assembly 2 enters the inside of the assembly port 44 and the gas storage tank 43, and then enters the inside of the horizontal cylinder 46 through the gas storage tank 43. The activity assembly 6 realizes the effect of blocking oxygen, at this time, a certain pressure is generated in the inside of the gas storage tank 43, and the oxygen in the inside of the gas storage tank 43 is output through the fixed nozzle 45 and the oxygen pipe. When the pressure in the inside of the gas storage tank 43 and the horizontal cylinder 46 is too high, the oxygen will flow through the blocking ring 48, and through the action of gas pressure and the sealing of the third rubber sealing ring 64 on the cylinder 61 and the horizontal cylinder 46, the rubber duckbill valve 63 plays a role in limiting the flow direction of the gas, and the cylinder 61 is moved. When the cylinder 61 moves, it overcomes the friction and the magnetic repulsion force between the inner hole plate 77 and the positioning plate 71, until the rubber duckbill valve 63 is inserted into the inside of the plug-in cylinder 72, and the plug-in cylinder 72 extrudes the rubber duckbill valve 63, causing the rear end of the rubber duckbill valve 63 to deform, until the plug-in cylinder 72 extends out of the inside of the rubber duckbill valve 63. At this time, the flow hole 74 is connected with the inside of the horizontal cylinder 46 at the rear end of the cylinder 61, and the gas in the inside of the horizontal cylinder 46 enters the inside of the flow hole 74, thereby realizing the effect of pressure relief. After the pressure in the inside of the horizontal cylinder 46 and the gas storage tank 43 is balanced, the cylinder 61 is reset by the magnetic repulsion force. This pressure relief method changes the traditional method of maintaining the set pressure by spring deformation, preventing the spring from gradually losing its elasticity after being subjected to long-term stress or frequent compression, thereby prolonging the service life of the pressure relief set pressure; When storing the oxygen after pressure relief, according to the above principle, the oxygen discharged from the blind hole 73 enters the inside of the gas storage column groove 54 through the shunt 52. At this time, the pressure in the inside of the gas storage column groove 54 increases, and the material of the movable circular plate 55 is aluminum alloy, which reduces the friction when the movable circular plate 55 moves. The action of gas pressure causes the movable circular plate 55 to move. When the movable circular plate 55 moves, it will discharge the gas from the inside of the gas storage cylinder 51 at the rear end of the second rubber sealing ring 56. The servo cylinder 57 is spaced apart from the inside of the gas storage cylinder 51, and the second rubber sealing ring 56 seals the movable circular plate 55 and the gas storage cylinder 51, which can prevent the gas stored in the inside of the gas storage column groove 54 from moving out, thereby realizing the effect of storing the oxygen after pressure relief, and ensuring that the stored oxygen is prevented from deteriorating; When the pressure inside the vertical cylinder 42 is supplemented, the pressure sensor detects the pressure inside the vertical cylinder 42, and the pressure sensor and the servo cylinder 57 are electrically connected to the integrated controller. By controlling the servo cylinder 57 to start, the piston rod of the servo cylinder 57 pushes the push disc 58 to move. After the push disc 58 contacts the movable circular plate 55, the movable circular plate 55 will be driven to move forward. Under the sealing of the second rubber sealing ring 56, the oxygen inside the gas storage column groove 54 will enter the inside of the horizontal cylinder 46 through the shunt 52. Through the inside of the horizontal cylinder 46, the oxygen enters the inside of the rubber duckbill valve 63. Under the action of pressure, the port at the rear end of the rubber duckbill valve 63 is opened. At this time, the oxygen will enter the inside of the gas storage groove 43 through the inside of the horizontal cylinder 46, thereby realizing the effect of supplementing the pressure inside the gas storage groove 43, actively increasing the pressure to make up for the deficiency, and ensuring that the pressure and flow of the oxygen output continuously meet the set standard, meeting the oxygen demand of patients, plateau users and other groups of people.

[0022] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An oxygen generator micro pressure regulating valve assembly capable of reducing air path loss, comprising an oxygen generator body (1) and a pipeline assembly (2), characterized in that: The oxygen generator body (1) is fixedly connected to a holding platform (3) at one end, the pipeline assembly (2) is fixedly connected to a pressure gathering assembly (4) on the right side, the pressure gathering assembly (4) is fixedly connected to a back pressure assembly (5) on the right side, and the pressure gathering assembly (4) is equipped with a movable assembly (6) and an auxiliary assembly (7) inside. The back pressure assembly (5) includes an air storage cylinder (51), a diversion port (52) is provided near the left end of the air storage cylinder (51), a first rubber sealing ring (53) is fixedly connected to the front end of the air storage cylinder (51), an air storage column groove (54) is provided on the inner side of the air storage cylinder (51), a movable circular plate (55) is embedded in the inner side of the air storage column groove (54), a second rubber sealing ring (56) is fixedly connected to the outer side of the movable circular plate (55), a servo electric cylinder (57) is fixedly connected near the rear end of the air storage cylinder (51), and a push plate (58) is fixedly connected to the end of the piston rod of the servo electric cylinder (57).

2. The micro pressure regulating valve assembly of the oxygen generator capable of reducing air path loss according to claim 1, wherein: The pressure gathering assembly (4) includes a fixed platform (41), the bottom of which is fixedly connected to the holding platform (3) by bolts, and a vertical cylinder (42) is fixedly connected to the top of the fixed platform (41). An assembly port (44) is opened at the left end of the vertical cylinder (42), and a pressure detector is installed inside the assembly port (44). The assembly port (44) is fixedly connected to the right side of the pipe assembly (2).

3. The micro pressure regulating valve assembly of claim 2, wherein: The vertical cylinder (42) has an air storage groove (43) on its inner side. A fixed nozzle (45) is fixedly connected to the right side of the air storage groove (43). A horizontal cylinder (46) is fixedly connected to the top of the vertical cylinder (42). The air storage groove (43) is connected to the inner side of the horizontal cylinder (46). The horizontal cylinder (46) is fixedly connected to the air storage cylinder (51). The horizontal cylinder (46) is connected to the air storage column groove (54) near the front end through a diversion port (52).

4. The micro pressure regulating valve assembly of claim 3, wherein: The front end of the horizontal cylinder (46) is fixedly connected to a first rubber sealing gasket (49), and the front end of the horizontal cylinder (46) is fixedly connected to a sealing plate (47) by bolts. The sealing plate (47) is in contact with the first rubber sealing gasket (49), and a retaining ring (48) is fixedly connected to the inner side of the horizontal cylinder (46). The inner side of the retaining ring (48) is a hollow structure.

5. The micro pressure regulating valve assembly of the oxygen generator capable of reducing air path loss according to claim 1, characterized in that: The active component (6) includes a cylindrical tube (61), with an internal hole (62) on the inner side of the cylindrical tube (61), a rubber duckbill valve (63) fixedly connected to the inner side of the internal hole (62), and a third rubber sealing ring (64) fixedly connected to the outer side of the cylindrical tube (61).

6. The micro pressure regulating valve assembly of the oxygen generator capable of reducing air path loss according to claim 5, characterized in that: The column (61) slides on the inside of the cross cylinder (46), the outer side of the third rubber sealing ring (64) is in contact with the inner side of the cross cylinder (46), and the column (61) is located between the auxiliary component (7) and the retaining ring (48).

7. The micro pressure regulating valve assembly of the oxygen generator capable of reducing air path loss according to claim 1, characterized in that: The auxiliary assembly (7) includes a positioning plate (71), the inner side of the positioning plate (71) is fixedly connected with a plug cylinder (72), an electric hydraulic rod (75) and a limiting telescopic rod (76), the outer side of the positioning plate (71) is fixedly connected to the inner side of the gas storage column groove (54), the piston rod tail of the electric hydraulic rod (75) and the piston rod tail of the limiting telescopic rod (76) are fixedly connected with an inner hole plate (77), the inner side of the inner hole plate (77) is provided with a movable port (78), and the inner hole plate (77) is repulsive to the cylinder (61) in a magnetic manner.

8. The micro pressure regulating valve assembly of claim 7, wherein: The inner side of the plug cylinder (72) is provided with a blind hole (73) and a flow hole (74), the flow hole (74) is communicated with the blind hole (73), and the flow hole (74) is communicated with the inner side of the horizontal cylinder (46).

9. The micro pressure regulating valve assembly of claim 8, wherein: The center of the plug cylinder (72) is aligned with the center of the rubber duckbill valve (63) front and back, and the peripheral diameter of the plug cylinder (72) is half of the inner peripheral diameter of the front end of the rubber duckbill valve (63).

10. The control method of the micro pressure regulating valve assembly of the oxygen generator capable of reducing the loss of the gas path according to any one of claims 1-9, characterized in that: Step one: the oxygen pipe is fixed and sealed with the fixed nozzle (45), the oxygen output by the oxygen generator body (1) through the pipeline assembly (2) enters the inside of the assembly port (44) and the gas storage groove (43), the gas storage groove (43) enters the inside of the horizontal cylinder (46), after a certain pressure is generated in the gas storage groove (43), the oxygen in the gas storage groove (43) is output through the fixed nozzle (45) and the oxygen pipe, when the pressure in the gas storage groove (43) and the horizontal cylinder (46) is too high, the oxygen flows through the blocking ring (48), the gas pressure and the sealing effect of the third rubber sealing ring (64) on the cylinder (61) and the horizontal cylinder (46) drive the cylinder (61) to move, the rubber duckbill valve (63) is inserted into the inside of the plug cylinder (72), the plug cylinder (72) extrudes the rubber duckbill valve (63), the rear end of the rubber duckbill valve (63) is deformed, the plug cylinder (72) extends into the inside of the rubber duckbill valve (63), the flow hole (74) is communicated with the inner side of the horizontal cylinder (46) at the rear end of the cylinder (61), and the gas in the horizontal cylinder (46) enters the inside of the flow hole (74); Step two: the oxygen discharged from the blind hole (73) enters the inside of the gas storage column groove (54) through the shunt port (52), the pressure in the gas storage column groove (54) increases, the movable circular plate (55) moves, the movable circular plate (55) discharges the gas from the inside of the gas storage cylinder (51) through the rear end of the second rubber sealing ring (56) when moving, a space is left between the servo cylinder (57) and the inner side of the gas storage cylinder (51), and the second rubber sealing ring (56) seals the movable circular plate (55) and the gas storage cylinder (51). Step three: the pressure sensor inside the vertical cylinder (42) detects the pressure inside the vertical cylinder (42), the pressure sensor and the servo cylinder (57) are electrically connected with the integrated controller, start the servo cylinder (57), the piston rod of the servo cylinder (57) pushes the push disc (58) to move, the push disc (58) contacts with the movable circular plate (55), which drives the movable circular plate (55) to move forward, the movable circular plate (55) pushes the oxygen inside the gas storage column groove (54) to enter the inside of the horizontal cylinder (46) through the shunt (52) under the sealing of the second rubber sealing ring (56), the inside of the horizontal cylinder (46) enters the inside of the rubber duckbill valve (63), the port at the rear end of the rubber duckbill valve (63) is opened, and the oxygen enters the inside of the gas storage groove (43) through the inside of the horizontal cylinder (46).

Images