Pressure detection structure

Abstract

The utility model relates to the technical field of oxygen generators, in particular to a pressure detection structure which comprises a PCB (printed circuit board), a mounting plate is fixedly arranged on one side of the top end of the PCB, a pressure controller is connected to the top end of the mounting plate in a clamping manner, an air nozzle is fixedly arranged on the other side of the top end of the PCB, and a straight-through pipe is fixedly connected to the detection end of the pressure controller. A detection pipe is fixedly arranged at one end of the straight-through pipe, and a mounting assembly is arranged in the mounting plate; by designing the cooperation of a pressure relief pipe, a second sliding hole, a pressure relief piston, a second spring, an exhaust pipe and other structures, when the air pressure in the air nozzle is too large, the pressure relief piston slides to one side of the inner wall of the pressure relief pipe along the second sliding hole through the air pressure, at the moment, the second spring is stretched, the pressure relief piston does not block the exhaust pipe any more, and the exhaust pipe communicates with the pressure relief pipe; therefore, automatic adjustment during pressure detection of the oxygen generator is achieved, impact force of air pressure is converted into kinetic energy of movement of the pressure relief piston, and the pressure of oxygen exhausted by the oxygen generator is kept stable.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen concentrators, in particular to a pressure detection structure. Background Art

[0002] An oxygen concentrator is an oxygen-generating device that uses the principle of pressure swing adsorption to separate oxygen from the air. In recent years, small oxygen concentrators have made great progress in reducing size, weight, and noise. Miniaturized small oxygen concentrators have been well used in home oxygen therapy and have become the most convenient and easy method for comprehensive prevention and treatment of chronic respiratory diseases. They have excellent effects on alleviating symptoms, promoting recovery, and improving sub-health conditions. During the oxygen production process, the oxygen concentrator needs to detect the oxygen inside through a pressure detection structure to ensure the stability of the oxygen production treatment process.

[0003] The patent specification with announcement number CN202223543785.6 discloses a gas pressure detection mechanism, which "comprises a first gas circuit and a second gas circuit that can be intermittently connected, the first gas circuit is connected to the pressure detection component, and the second gas circuit is connected to the device to be tested. The gas pressure detection mechanism of the utility model has a simple structure, is easy to process and maintain, can accurately detect the gas pressure of the device to be tested, can be used for air tightness detection or pressure resistance detection of a variety of products, is suitable for assembly line operations, and can be used to monitor the dynamic changes of air pressure. It is highly practical and suitable for popularization and application."

[0004] However, in the implementation of relevant technologies, it was found that the above-mentioned gas pressure detection mechanism has the following problems: during the detection process, when the traditional oxygen concentrator pressure detection structure detects that the oxygen pressure in the oxygen concentrator is too high, it often notifies the medical staff through an alarm, and it is difficult to independently adjust the pressure of oxygen discharge, resulting in inconvenience in adjusting the oxygen pressure. In view of this, a pressure detection structure is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a pressure detection structure.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pressure detection structure, including a PCB board, a mounting plate is fixedly provided on one side of the top of the PCB board, a pressure controller is snap-connected to the top of the mounting plate, an air nozzle is fixedly provided on the other side of the top of the PCB board, a detection end of the pressure controller is fixedly connected to a straight-through pipe, one end of the straight-through pipe is fixedly provided with a detection tube, a mounting assembly is provided inside the mounting plate, and a pressure relief assembly is fixedly provided inside the straight-through pipe.

[0007] As a further description of the above technical solution: the mounting assembly includes two first sliding holes, two sliding rods, two pressure plates, two clamping plates and two first springs, the two first sliding holes are respectively opened on the inner walls on both sides of the mounting plate, the inner walls of the two first sliding holes are slidably connected with sliding rods, one end of the two sliding rods is fixed with a pressure plate, one side of the two pressure plates is fixed with a clamping plate, the surface of the two pressure plates is fixed with a first spring, and one end of the two first springs is fixedly connected to the mounting plate.

[0008] As a further description of the above technical solution: the pressure relief assembly includes a pressure relief pipe, a second sliding hole, a pressure relief piston, a second spring and an exhaust pipe, the pressure relief pipe is fixedly arranged on the surface of the straight-through pipe, the inner wall of the pressure relief pipe is provided with a second sliding hole, the inner wall of the second sliding hole is slidably connected with the pressure relief piston, the surface of the pressure relief piston is fixedly provided with a second spring, one end of the second spring is fixedly connected to the straight-through pipe, and the surface of the pressure relief pipe is fixedly provided with an exhaust pipe.

[0009] As a further description of the above technical solution: a sliding groove is provided on the inner wall of the mounting plate, the two clamping plates are slidably connected to the sliding groove, and the other ends of the two sliding rods are fixedly provided with a pull-twist device.

[0010] As a further description of the above technical solution: a telescopic hose is fixedly provided at one end of the detection tube, and a connecting tube is fixedly provided at one end of the telescopic hose.

[0011] As a further description of the above technical solution: two fixing plates are fixedly provided on the surface of the air nozzle, the inner walls of the two fixing plates are threadedly connected with screws, and one end of the two screws is threadedly connected to the connecting pipe.

[0012] As a further description of the above technical solution: a sealing ring is fixedly provided between the air nozzle and the PCB board.

[0013] The utility model has the following beneficial effects:

[0014] The pressure detection structure designed by the utility model, through the mutual cooperation of the first sliding hole, the sliding rod, the pressure plate, the clamping plate, the first spring, the telescopic hose and the screw rod, pulls the two sliding rods to contract the two first springs, thereby separating the two clamping plates from the surface of the pressure controller respectively, and the connecting pipe and the air nozzle can be separated by rotating the two screw rods, so that the pressure controller can be disassembled, which is convenient for maintenance of the pressure detection mechanism.

[0015] The pressure detection structure designed by the utility model cooperates with the design of the pressure relief pipe, the second sliding hole, the pressure relief piston, the second spring and the exhaust pipe. When the air pressure inside the air nozzle is too large, the air pressure causes the pressure relief piston to slide along the second sliding hole to one side of the inner wall of the pressure relief pipe. At this time, the second spring is stretched, and the pressure relief piston no longer blocks the exhaust pipe. The exhaust pipe is connected to the pressure relief pipe, thereby realizing autonomous adjustment during pressure detection of the oxygen generator, and converting the impact force of the air pressure into kinetic energy of the movement of the pressure relief piston, thereby maintaining the stability of the oxygen pressure discharged by the oxygen generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the mounting plate of the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the pressure relief pipe of the utility model;

[0019] Figure 4 For this utility model Figure 1 A is an enlarged structural diagram of FIG.

[0020] Legend:

[0021] 1. PCB board; 2. Mounting plate; 3. Pressure controller; 4. Air nozzle; 5. Straight-through pipe; 6. Detection tube; 7. Mounting assembly; 8. Pressure relief assembly; 9. Slide groove; 10. Pull and twist; 11. Telescopic hose; 12. Connecting pipe; 13. Fixing plate; 14. Screw; 71. First sliding hole; 72. Sliding rod; 73. Pressure plate; 74. Clamp; 75. First spring; 81. Pressure relief pipe; 82. Second sliding hole; 83. Pressure relief piston; 84. Second spring; 85. Exhaust pipe. DETAILED DESCRIPTION

[0022] Reference Figure 1-4 The utility model provides a pressure detection structure: comprising a PCB board 1, a mounting plate 2 is fixedly provided on one side of the top of the PCB board 1, a pressure controller 3 is snap-connected to the top of the mounting plate 2, a gas nozzle 4 is fixedly provided on the other side of the top of the PCB board 1, a straight-through pipe 5 is fixedly connected to the detection end of the pressure controller 3, a detection tube 6 is fixedly provided at one end of the straight-through pipe 5, a mounting assembly 7 is provided inside the mounting plate 2, and a pressure relief assembly 8 is fixedly provided inside the straight-through pipe 5;

[0023] A telescopic hose 11 is fixedly provided at one end of the detection tube 6, and a connecting tube 12 is fixedly provided at one end of the telescopic hose 11;

[0024] Two fixing plates 13 are fixedly provided on the surface of the air nozzle 4. The inner walls of the two fixing plates 13 are threadedly connected with screws 14. One end of the two screws 14 is threadedly connected to the connecting pipe 12. The connecting pipe 12 is conveniently fixed by the two screws 14.

[0025] A sealing ring is fixedly provided between the air nozzle 4 and the PCB board 1 , and the sealing ring can effectively improve the sealing performance of the connection between the air nozzle 4 and the PCB board 1 .

[0026] As a further implementation scheme of the above technical scheme: the mounting assembly 7 includes two first sliding holes 71, two sliding rods 72, two pressure plates 73, two clamping plates 74 and two first springs 75. The two first sliding holes 71 are respectively opened on the inner walls on both sides of the mounting plate 2. The inner walls of the two first sliding holes 71 are slidably connected with sliding rods 72. One end of the two sliding rods 72 is fixed with a pressure plate 73. One side of the two pressure plates 73 is fixed with a clamping plate 74. The surfaces of the two pressure plates 73 are fixed with first springs 75. One end of the two first springs 75 is fixedly connected to the mounting plate 2.

[0027] As a further implementation scheme of the above technical scheme: a slide groove 9 is opened on the inner wall of the mounting plate 2, and the two clamping plates 74 are slidably connected to the slide groove 9, and the other ends of the two sliding rods 72 are fixedly provided with a pull-twist 10. By pulling the two sliding rods 72, the two first springs 75 are contracted, and then the two clamping plates 74 are respectively separated from the surface of the pressure controller 3, so that the pressure controller 3 can be disassembled, which is convenient for maintenance of the pressure detection mechanism.

[0028] As a further implementation scheme of the above technical scheme: the pressure relief assembly 8 includes a pressure relief pipe 81, a second sliding hole 82, a pressure relief piston 83, a second spring 84 and an exhaust pipe 85. The pressure relief pipe 81 is fixedly arranged on the surface of the straight-through pipe 5. The inner wall of the pressure relief pipe 81 is provided with a second sliding hole 82. The inner wall of the second sliding hole 82 is slidably connected with the pressure relief piston 83. The surface of the pressure relief piston 83 is fixedly provided with a second spring 84. One end of the second spring 84 is fixedly connected to the straight-through pipe 5. The surface of the pressure relief pipe 81 is fixedly provided with an exhaust pipe 85. When the air pressure inside the air nozzle 4 is too high, the air pressure causes the pressure relief piston 83 to slide along the second sliding hole 82 to one side of the inner wall of the pressure relief pipe 81. At this time, the second spring 84 is stretched, and the pressure relief piston 83 no longer blocks the exhaust pipe 85. The exhaust pipe 85 is connected to the pressure relief pipe 81, thereby realizing autonomous adjustment of the oxygen generator pressure detection.

[0029] Working principle: When using the utility model, first pull the two sliding rods 72 to make them slide outward on the inner walls of the two first sliding holes 71 respectively, and the two clamping plates 74 slide along the inner walls of the sliding groove 9 respectively to shrink the two first springs 75, and then place the pressure controller 3 in the middle of the sliding groove 9, and then reset the two first springs 75 to make the two clamping plates 74 limit and fix the pressure controller 3, and then insert one end of the connecting pipe 12 into the interior of the gas nozzle 4, and rotate the two screws 14 in turn to fix the connecting pipe 12, so as to realize the installation of the pressure controller 3. When the air pressure inside the gas nozzle 4 is too large, the air pressure makes the pressure relief piston 83 slide along the second sliding hole 82 to one side of the inner wall of the pressure relief pipe 81. At this time, the second spring 84 is stretched, and the pressure relief piston 83 no longer blocks the exhaust pipe 85, and the exhaust pipe 85 is connected with the pressure relief pipe 81, thereby realizing autonomous adjustment of the oxygen generator pressure detection.

[0030] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure detection structure, comprising a PCB board (1), characterized in that: A mounting plate (2) is fixedly provided on one side of the top of the PCB board (1), a pressure controller (3) is snap-connected to the top of the mounting plate (2), a gas nozzle (4) is fixedly provided on the other side of the top of the PCB board (1), a straight-through pipe (5) is fixedly connected to the detection end of the pressure controller (3), a detection tube (6) is fixedly provided on one end of the straight-through pipe (5), a mounting assembly (7) is provided inside the mounting plate (2), and a pressure relief assembly (8) is fixedly provided inside the straight-through pipe (5).

2. A pressure detection structure according to claim 1, characterized in that: The mounting assembly (7) comprises two first sliding holes (71), two sliding rods (72), two pressure plates (73), two clamping plates (74) and two first springs (75). The two first sliding holes (71) are respectively arranged on the inner walls on both sides of the mounting plate (2). The inner walls of the two first sliding holes (71) are slidably connected with sliding rods (72). One end of the two sliding rods (72) is fixedly provided with a pressure plate (73). One side of the two pressure plates (73) is fixedly provided with a clamping plate (74). The surfaces of the two pressure plates (73) are fixedly provided with first springs (75). One end of the two first springs (75) is fixedly connected to the mounting plate (2).

3. A pressure detection structure according to claim 1, characterized in that: The pressure relief assembly (8) comprises a pressure relief pipe (81), a second sliding hole (82), a pressure relief piston (83), a second spring (84) and an exhaust pipe (85); the pressure relief pipe (81) is fixedly arranged on the surface of the straight pipe (5); the inner wall of the pressure relief pipe (81) is provided with a second sliding hole (82); the inner wall of the second sliding hole (82) is slidably connected with the pressure relief piston (83); the surface of the pressure relief piston (83) is fixedly provided with a second spring (84); one end of the second spring (84) is fixedly connected to the straight pipe (5); and the surface of the pressure relief pipe (81) is fixedly provided with an exhaust pipe (85).

4. A pressure detection structure according to claim 2, characterized in that: The inner wall of the mounting plate (2) is provided with a sliding groove (9), the two clamping plates (74) are slidably connected to the sliding groove (9), and the other ends of the two sliding rods (72) are fixedly provided with a pull-twist (10).

5. A pressure detection structure according to claim 1, characterized in that: A telescopic hose (11) is fixedly provided at one end of the detection tube (6), and a connecting tube (12) is fixedly provided at one end of the telescopic hose (11).

6. A pressure detection structure according to claim 5, characterized in that: Two fixing plates (13) are fixedly provided on the surface of the air nozzle (4), the inner walls of the two fixing plates (13) are threadedly connected with screw rods (14), and one end of the two screw rods (14) is threadedly connected to the connecting pipe (12).

7. A pressure detection structure according to claim 1, characterized in that: A sealing ring is fixedly provided between the air nozzle (4) and the PCB board (1).

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