Oxygen concentration detection device for oxygen generator

Abstract

The utility model provides a kind of oxygen concentrator oxygen concentration detection device, belong to oxygen detection technical field, including shunt box;Flow resistance box is equipped on the shunt box one side outer wall;Gear pump is equipped on the flow resistance box upper side outer wall away from shunt box;Detection tube is equipped on the gear pump upper side outer wall away from flow resistance box;Oxygen concentration detector is embedded and fixed in the top of detection tube;Airflow flow direction switching assembly is equipped on the shunt box;Airflow instantaneous flow resistance component is equipped on the flow resistance box;The utility model switches the flow direction of oxygen meeting requirements and abnormal oxygen by airflow flow direction switching assembly, not only convenient for oxygen meeting requirements backflow to oxygen concentrator, but also can use the delivery of gear pump and the storage of airflow temporary storage box, so that oxygen pressurized backflow, oxygen is directly used after detection, and abnormal oxygen detected can also be directly discharged.

Description

Technical Field

[0001] This utility model belongs to the field of oxygen detection technology, specifically relating to an oxygen concentration detection device for an oxygen generator. Background Technology

[0002] An oxygen generator uses air as raw material. After pressurizing, purifying, drying, and cooling the air, it is poured into an adsorption tower of molecular sieves. The adsorption tower adsorbs nitrogen, carbon dioxide, and other gases from the air, and the gas that flows out is high-purity oxygen. In order to ensure the accuracy of the oxygen generator, the concentration of the produced oxygen needs to be detected.

[0003] Existing oxygen concentration detection methods typically involve collecting oxygen through an oxygen pipeline installed at the outlet of an oxygen storage tank, and then using an external oxygen concentration detector to measure the oxygen concentration. To avoid oxygen consumption, the detected oxygen is usually directly returned to the oxygen generator. However, oxygen with abnormal concentrations will also be returned to the oxygen generator. Since oxygen with abnormal concentrations is difficult to use directly, it can easily interfere with the oxygen concentration accuracy of the subsequent oxygen generator. Furthermore, there may be issues with the return pressure being low, making it difficult to return the oxygen to the oxygen generator.

[0004] Therefore, an oxygen concentration detection device for an oxygen generator is proposed. Summary of the Invention

[0005] This invention provides an oxygen concentration detection device for an oxygen generator, the purpose of which is to solve the problems mentioned above.

[0006] This utility model provides an oxygen concentration detection device for an oxygen generator, including a distribution box; a flow-blocking box disposed on one outer wall of the distribution box; a gear pump disposed on the outer wall of the flow-blocking box away from the distribution box; a detection tube disposed on the outer wall of the gear pump away from the flow-blocking box; an oxygen concentration detector embedded and fixed to the top of the detection tube; an airflow direction switching component disposed on the distribution box; and an instantaneous airflow blocking component disposed on the flow-blocking box. The airflow direction switching component includes: a stepper motor disposed at the center of one outer wall of the distribution box; a guide platform fixed to the output end of the stepper motor; an inner circulation channel and an outer discharge channel opened on one outer wall of the guide platform, the inner circulation channel and the outer discharge channel being mirror-symmetrical; an airflow passage opened on the outer wall of the distribution box; an upper discharge pipe disposed at the top of the distribution box; and a lower discharge pipe disposed at the bottom of the distribution box.

[0007] Furthermore, the instantaneous airflow obstruction assembly includes: a balance plate rotating on the inner wall of the obstruction box; a turntable one located at the center of the outer wall of one side of the balance plate; an outer protrusion one located on the outer wall of the turntable one; a bracket located on the outer wall of one side of the obstruction box; a servo motor located on the outer wall of the bracket away from the obstruction box; a turntable two fixed to the output end of the servo motor; an outer protrusion two located on the outer wall of the turntable two; an electric push rod located at the bottom of the obstruction box; and a stop block fixed to the output end of the electric push rod.

[0008] Furthermore, an airflow storage box is provided at the bottom end of the lower discharge pipe, and a return pipe is provided at the bottom of the airflow storage box;

[0009] Furthermore, one end of the detection tube is connected to the oxygen pipeline at the outlet of the oxygen generator, and one end of the return tube is connected to the inlet of the oxygen generator;

[0010] Furthermore, the outer wall of the flow guide platform is precisely fitted to the inner wall of the flow divider box, and the cross-sections of the inner circulation channel and the outer discharge channel are both "C" shaped structures;

[0011] By adopting the above technical solution, the sealing between the guide platform and the distribution box is ensured through a precise fit to avoid leakage, and gas flow is achieved through the "C"-shaped internal circulation channel and external discharge channel.

[0012] Furthermore, the upper discharge pipe, the lower discharge pipe, and the flow-blocking box are all connected to the internal space of the flow-dividing box through airflow holes;

[0013] By adopting the above technical solution, the gas can enter and exit the distribution box, thereby realizing the gas diversion and flow based on the detection results.

[0014] Furthermore, the first and second external protrusions interfere with each other during axial movement;

[0015] By adopting the above technical solution, it is convenient for the second outer protrusion to contact the first outer protrusion during axial movement, thereby driving the first outer protrusion to move axially.

[0016] Furthermore, both the inlet and outlet ends of the airflow storage box are equipped with one-way valves;

[0017] By adopting the above technical solution, a one-way valve ensures unidirectional gas flow and avoids backflow.

[0018] The beneficial effects of this utility model are as follows:

[0019] This invention uses an airflow direction switching component to switch the flow direction of qualified oxygen and abnormal oxygen. This not only facilitates the return of qualified oxygen to the oxygen generator and the direct use of the tested oxygen, but also allows for pressurized return of oxygen by utilizing the delivery of the gear pump and the storage of the airflow temporary storage box. It can also directly discharge the detected abnormal oxygen and prevent the abnormal oxygen from returning to the oxygen generator.

[0020] When an oxygen anomaly is detected, the instantaneous airflow obstruction component can deflect the balance plate to a vertical position to prevent gas from entering the distribution box, thus providing space for the axial movement of the guide platform and preventing abnormal oxygen from flowing back to the oxygen generator.

[0021] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0024] Figure 2 This is an exploded view of the diversion box according to an embodiment of the present utility model;

[0025] Figure 3 This is a schematic diagram of the internal structure of the flow-blocking box according to an embodiment of the present utility model;

[0026] Figure 4 This is a schematic diagram of the external structure of the flow-blocking box according to an embodiment of the present utility model;

[0027] Figure 5 This is an embodiment of the present utility model. Figure 4 Enlarged diagram of point A in the diagram;

[0028] Figure 6 This is a rear-view schematic diagram of an embodiment of the present utility model;

[0029] Reference numerals: 1. Diverter box; 2. Baffle box; 3. Gear pump; 4. Detection tube; 5. Oxygen concentration detector; 6. Airflow direction switching component; 61. Stepper motor; 62. Guide platform; 63. Internal circulation channel; 64. External discharge channel; 65. Airflow passage; 66. Upper discharge pipe; 67. Lower discharge pipe; 7. Instantaneous airflow choke component; 71. Balance plate; 72. Turntable one; 73. Outer protrusion one; 74. Bracket; 75. Servo motor; 76. Turntable two; 77. Outer protrusion two; 78. Electric push rod; 79. Stop block; 8. Airflow storage box; 9. Return pipe. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] Reference Figure 1-6 This utility model embodiment proposes an oxygen concentration detection device for an oxygen generator, including a diversion box 1, a flow-blocking box 2 is provided on one outer wall of the diversion box 1, a gear pump 3 is provided on the outer wall of the flow-blocking box 2 away from the diversion box 1, a detection tube 4 is provided on the outer wall of the gear pump 3 away from the flow-blocking box 2, an oxygen concentration detector 5 is embedded in the top of the detection tube 4, and the detection end of the oxygen concentration detector 5 is located in the middle of the inside of the detection tube 4;

[0032] At the center of the outer wall of the flow divider 1 adjacent to the flow obstruction box 2, a stepper motor 61 from the airflow direction switching assembly 6 is bolted to it. The stepper motor 61 is fixedly connected to a guide platform 62 via its output end. An inner circulation channel 63 and an outer discharge channel 64 are formed on one side of the outer wall of the guide platform 62. The inner circulation channel 63 and the outer discharge channel 64 are mirror images of each other. The outer wall of the guide platform 62 precisely fits the inner wall of the flow divider 1. Both the inner circulation channel 63 and the outer discharge channel 64 have a "C"-shaped cross-section. This precise fit ensures... To ensure the airtightness between the flow guide platform 62 and the flow distribution box 1 and prevent leakage, gas flow is achieved through the "C"-shaped internal circulation channel 63 and external discharge channel 64. Three airflow holes 65 are axially opened on the outer side wall of the flow distribution box 1, and an upper discharge pipe 66 is provided at the top of the flow distribution box 1, and a lower discharge pipe 67 is provided at the bottom of the flow distribution box 1. The upper discharge pipe 66, the lower discharge pipe 67 and the flow obstruction box 2 are all connected to the internal space of the flow distribution box 1 through the airflow holes 65 to ensure that gas enters and exits the flow distribution box 1, thereby realizing the gas flow and distribution according to the detection results.

[0033] A balance plate 71 from the instantaneous airflow obstruction assembly 7 is rotatably connected to the center of the inner wall of the flow obstruction box 2. A turntable 72 is positioned at the center of one outer wall of the balance plate 71, near the outer side of the flow obstruction box 2. An outer protrusion 73 is located on the outer wall of the turntable 72. A bracket 74 is positioned on one outer wall of the flow obstruction box 2, near the outer protrusion 73. A servo motor 75 is mounted on the outer wall of the bracket 74, away from the flow obstruction box 2. The servo motor 75 is connected via one of its... A turntable 76 is fixedly connected to the output end on the side. An outer protrusion 77 is provided on the outer wall of the turntable 76. When the outer protrusion 73 and the outer protrusion 77 move axially, they interfere with each other, so that the outer protrusion 77 can contact the outer protrusion 73 during the axial movement, thereby pushing the outer protrusion 73 to move axially. An electric push rod 78 is provided at the bottom of the flow-blocking box 2. A stop block 79 is fixedly connected to the output end on one side of the electric push rod 78. One end of the stop block 79 can extend into the interior of the flow-blocking box 2.

[0034] A gas flow storage box 8 is installed at the bottom of the lower discharge pipe 67. Both the inlet and outlet ends of the gas flow storage box 8 are equipped with one-way valves to ensure unidirectional gas flow and prevent backflow. A return pipe 9 is installed at the bottom of the gas flow storage box 8. One end of the detection pipe 4 is connected to the oxygen pipeline at the outlet of the oxygen generator, and the other end of the return pipe 9 is connected to the inlet of the oxygen generator to detect the concentration of oxygen produced by the molecular sieve oxygen generator and return oxygen that meets the concentration requirements to the molecular sieve oxygen generator.

[0035] The specific implementation method is as follows: When detecting the concentration of oxygen produced by the oxygen generator, the detection tube 4 is connected to the oxygen pipeline at the outlet of the oxygen generator. The produced oxygen enters the detection tube 4, the oxygen concentration detector 5 detects the oxygen concentration, the gear pump 3 pressurizes the oxygen and delivers it to the flow blocking box 2. After passing through the flow blocking box 2, the oxygen enters the flow distribution box 1. Under the guidance of the internal circulation channel 63, the oxygen passes through the lower discharge pipe 67 and enters the air flow storage box 8. Under continuous pressurization, the oxygen pressure in the air flow storage box 8 gradually increases. When the pressure value is greater than the one-way valve threshold at the outlet of the air flow storage box 8, the oxygen flows back to the oxygen generator.

[0036] When the oxygen concentration value detected by the oxygen concentration detector 5 is abnormal, the stepper motor 61 is controlled to drive the guide platform 62 to rotate 90 degrees through its output terminal on one side. The internal circulation channel 63 and the external discharge channel 64 on the guide platform 62 exchange positions. At this time, one end of the external discharge channel 64 is connected to the flow blocking box 2. The abnormal oxygen is discharged through the upper discharge pipe 66 under the guidance of the external discharge channel 64, so as to prevent the abnormal oxygen from flowing back to the oxygen generator.

[0037] When the oxygen concentration detector 5 detects an abnormality, the control servo motor 75 drives the turntable 76 to rotate through its output end on one side. The outer protrusion 77 on the turntable 76 moves axially. After the outer protrusion 77 contacts the outer protrusion 73, it pushes it to move axially. At this time, the balance plate 71 deflects. Driven by the gas flow, the balance plate 71 rotates axially. Under the obstruction of the stop block 79, the balance plate 71 is in a vertical state. The balance plate 71 prevents the gas from entering the distribution box 1, providing space for the axial movement of the guide platform 62 and preventing abnormal oxygen from flowing back to the oxygen generator.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An oxygen concentration detection device for an oxygen generator, characterized in that: Includes the distribution box (1); A flow-blocking box (2) is installed on one side of the outer wall of the flow divider (1); A gear pump (3) is installed on the outer wall of the flow-blocking box (2) on the side away from the flow-diverting box (1); A detection tube (4) is installed on the outer wall of the gear pump (3) on the side away from the flow obstruction box (2); An oxygen concentration detector (5) is embedded and fixed at the top of the detection tube (4); An airflow direction switching component (6) is provided on the flow distribution box (1); An instantaneous airflow obstruction assembly (7) is installed on the obstruction box (2); The airflow direction switching component (6) includes: A stepper motor (61) is located at the center of the outer wall on one side of the distribution box (1); A flow guide (62) fixed to the output end of the stepper motor (61); An inner circulation channel (63) and an outer discharge channel (64) are formed on the outer wall of one side of the flow guide (62), and the inner circulation channel (63) and the outer discharge channel (64) are mirror symmetrical; An airflow passage (65) is provided on the outer wall of the distribution box (1); The upper discharge pipe (66) is located at the top of the diversion box (1); and The lower discharge pipe (67) is located at the bottom of the diversion box (1).

2. The oxygen concentration detection device for an oxygen generator according to claim 1, characterized in that: The instantaneous airflow obstruction component (7) includes: The balance plate (71) rotates on the inner wall of the flow-blocking box (2); A turntable (72) is located at the center of the outer wall of one side of the balance plate (71); An outer protrusion (73) is provided on the outer side wall of the turntable (72); A bracket (74) is provided on one side of the outer wall of the flow-blocking box (2); A servo motor (75) is mounted on the outer wall of the bracket (74) on the side away from the flow-blocking box (2); Turntable 2 (76) fixed to the output end of the servo motor (75); An outwardly protruding part (77) is provided on the outer side wall of the turntable (76); An electric push rod (78) is provided at the bottom of the flow-blocking box (2); A stop (79) fixed to the output end of the electric push rod (78).

3. The oxygen concentration detection device for an oxygen generator according to claim 1, characterized by: The bottom end of the lower discharge pipe (67) is provided with an airflow storage box (8), and the bottom of the airflow storage box (8) is provided with a return pipe (9).

4. The oxygen concentration detection device for an oxygen generator according to claim 3, characterized in that: One end of the detection tube (4) is connected to the oxygen pipeline at the outlet of the oxygen generator, and one end of the return tube (9) is connected to the inlet of the oxygen generator.

5. The oxygen concentration detection device for an oxygen generator according to claim 1, characterized in that: The outer side wall of the guide platform (62) is precisely fitted to the inner side wall of the diversion box (1), and the cross-sections of the inner circulation channel (63) and the outer discharge channel (64) are both "C" shaped structures.

6. The oxygen concentration detection device for an oxygen generator according to claim 1, characterized in that: The upper discharge pipe (66), lower discharge pipe (67) and flow barrier (2) are all connected to the internal space of the flow divider (1) through the airflow passage (65).

7. The oxygen concentration detection device for an oxygen generator according to claim 2, characterized in that: The outer protrusion one (73) and outer protrusion two (77) generate motion interference when they make axial movements.

8. The oxygen concentration detection device for an oxygen generator according to claim 3, characterized in that: One-way valves are provided at both the inlet and outlet ends of the airflow storage box (8).

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