Oxygen concentration detection device and detection method thereof

Abstract

The present invention relates to the technical field of oxygen concentration detection, and discloses an oxygen concentration detection device and a detection method thereof, including an oxygen concentration detector body, a mounting seat and an air intake duct, wherein the mounting seat is fixedly connected to the top of the oxygen concentration detector body, the bottom of the air intake duct is fixedly connected with a joint, and the top of the air intake duct is fixedly connected with a filter frame. Through the design of the cleaning mechanism, when performing the oxygen concentration detection task, the filter frame can filter impurities from the incoming gas to prevent impurities from entering the equipment and causing damage to the equipment. At the same time, in order to prevent impurities from being adsorbed on the outside of the filter frame, the scraper can be controlled to continuously scrape the outer surface of the filter frame, so as to clean out the impurities in time, properly ensure the air passing efficiency, and avoid the situation where the detection work is affected by the accumulation of impurities because of the inability to clean in time manually.

Description

Technical Field

[0001] The present invention relates to the technical field of oxygen concentration detection, and in particular to an oxygen concentration detection device and a detection method thereof. Background Art

[0002] In many construction areas such as mines and tunnels, due to the limitations of the working scenes, it is often necessary to detect the oxygen concentration within the range in order to ensure the health of the construction workers. When detecting oxygen, it is generally necessary to use an oxygen concentration detector for effective detection.

[0003] With the development of technology, the main body of the portable oxygen concentration oxygen concentration detector has become a widely used oxygen concentration detection equipment. It is relatively small in size, and is generally equipped with a clip on the back, so that users can carry it on their clothes by clipping it on the pocket of the clothes, so as to free up their hands to perform construction work. When it is working, the air is generally sucked into the equipment through the sampling air inlet, and then its concentration data is detected. Since there are many other impurities such as dust in the air in the construction area, the existing devices are generally equipped with a dust filtering function at the air inlet. However, during the detection process, when impurities accumulate in the filter, it will directly affect the subsequent passage of air, and users in the construction state often cannot discover and deal with this problem in time. Therefore, an oxygen concentration detection device and a detection method that can self-clean the air inlet are proposed to solve the above problems. Summary of the invention

[0004] In order to solve the above-mentioned problems, the present invention provides an oxygen concentration detection device.

[0005] The oxygen concentration detection device provided by the present invention adopts the following technical solution:

[0006] An oxygen concentration detection device comprises an oxygen concentration detector body, a mounting seat and an air intake duct, wherein the mounting seat is fixedly connected to the top of the oxygen concentration detector body, a joint is fixedly connected to the bottom of the air intake duct, a filter frame is fixedly connected to the top of the air intake duct, the mounting seat extends into the inside of the joint and is connected to the joint by threads, and a cleaning mechanism is arranged on the top of the oxygen concentration detector body;

[0007] The cleaning mechanism comprises a base frame, the base frame is fixedly connected to the top of the oxygen concentration detector body, the base frame is arranged on the outside of the mounting seat, the base frame is rotatably connected with a ring plate inside the base frame, the ring plate extends out of the base frame, the top of the ring plate is fixedly connected to a vertical rod, the vertical rod is respectively integrated with a positioning plate and a supporting plate, the outer side of the vertical rod is rotatably connected with an annular plate, the top and bottom of the annular plate are respectively in contact with the positioning plate and the supporting plate, and the outer side of the annular plate is respectively integrated with a first rectangular frame and a second rectangular frame, the first rectangular frame is slidably connected with a U-shaped plate inside the first rectangular frame, the U-shaped plate extends out of the first rectangular frame, the first rectangular frame is rotatably connected with a first threaded rod inside the first rectangular frame, the first threaded rod penetrates one side wall of the U-shaped plate and is connected to the U-shaped plate by a thread, the first threaded rod is fixedly connected to a control plate outside the first threaded rod, the control plate extends out of the first rectangular frame, and a scraper is fixedly connected to one side of the U-shaped plate, and the scraper is in contact with the outer surface of the filter screen frame;

[0008] A motor is fixedly connected to the top of the base frame, and the motor is electrically connected to the main body of the oxygen concentration detector. An auxiliary rod is rotatably connected inside the base frame, and the motor is fixedly connected to the top of the auxiliary rod through an output shaft. A gear is fixedly connected to the outside of the auxiliary rod, and a gear ring is fixedly connected to the outside of the ring plate. The gear is arranged on one side of the gear ring, and the gear is meshed with the gear ring.

[0009] By adopting the above technical solution, when performing the oxygen concentration detection task, the filter frame can filter impurities from the incoming gas to prevent impurities from entering the equipment and causing damage to the equipment. At the same time, in order to prevent impurities from being adsorbed on the outside of the filter frame, the scraper can be controlled to continuously scrape the outer surface of the filter frame to clean out the impurities in time, properly ensuring the air passage efficiency and avoiding the situation where the detection work is affected by the accumulation of impurities due to the inability to clean them in time.

[0010] Preferably, an L-shaped plate is slidably connected to the inside of the second rectangular frame, the L-shaped plate extends out of the second rectangular frame, and a second threaded rod is rotatably connected to the inside of the second rectangular frame. The second threaded rod passes through the top wall of the L-shaped plate and is threadedly connected to the L-shaped plate, and the L-shaped plate passes through the support plate.

[0011] By adopting the above technical solution, the second threaded rod can drive the L-shaped plate to move up and down after rotating.

[0012] Preferably, the cleaning mechanism includes an external protection component, the external protection component includes a protection frame, the protection frame is arranged on the outside of the filter frame, two positioning frames are fixedly connected to the top of the oxygen concentration detector body, the two positioning frames are respectively arranged on both sides of the protection frame, and the positioning frame is in contact with the outside of the protection frame, and holes are opened on both sides of the protection frame, and the positioning frame is slidably connected with a plug plate inside, and the plug plate extends out of the positioning frame. The plug plate passes through the plug hole and matches the plug hole, and the positioning frame is slidably connected with a first push block inside, and the first push block extends out of the positioning frame.

[0013] By adopting the above technical solution, the protective frame can be limited after the plug board is inserted into the socket.

[0014] Preferably, a first inclined plate is provided between the first push block and the insert plate, two ends of the first inclined plate extend to the inner sides of the first push block and the insert plate respectively, and the first inclined plate is connected to the first push block and the insert plate respectively through a rotating shaft.

[0015] By adopting the above technical solution, the first inclined plate can push and pull the plug plate after it swings.

[0016] Preferably, a first spring is fixedly connected inside the positioning frame, and the top of the first spring is fixedly connected to the bottom of the first pushing block.

[0017] By adopting the above technical solution, the first spring exerts an elastic thrust on the first push block.

[0018] Preferably, a clip is provided on the rear side of the oxygen concentration detector body, an adjustment mechanism is provided on the rear side of the oxygen concentration detector body, the adjustment mechanism includes a base, a circular plate is rotatably connected inside the base, the circular plate extends out of the outside of the base, the clip is fixedly connected to the rear side of the circular plate, an auxiliary frame is fixedly connected to the outside of the oxygen concentration detector body, a guide block is fixedly connected to the rear side of the oxygen concentration detector body, and the clip is in contact with the rear side of the guide block.

[0019] By adopting the above technical solution, when the guide block is clamping, the object to be clamped can be smoothly guided by the guide block into the inner side of the clamp.

[0020] Preferably, limiting holes are provided on the base and the circular plate, and adjacent limiting holes on the base and the circular plate are communicated, a limiting plate is provided inside the auxiliary frame, the limiting plate extends out of the outside of the auxiliary frame, one end of the limiting plate extends into the limiting hole and matches the limiting hole, a second push block is slidably connected inside the auxiliary frame, the second push block extends out of the outside of the auxiliary frame, a second spring is fixedly connected to the second push block, the second spring is fixedly connected to the inside of the auxiliary frame, two limiting rods are fixedly connected inside the auxiliary frame, and both limiting rods pass through the limiting plate.

[0021] By adopting the above technical solution, the second spring exerts an elastic force on the second push block.

[0022] Preferably, a second inclined plate is provided between the second push block and the limiting plate, and the front and rear ends of the second inclined plate are movably connected to the push block and the limiting plate respectively through movable hinge seats.

[0023] By adopting the above technical solution, the second inclined plate can push and pull the limiting plate after swinging.

[0024] Another technical problem to be solved by the present invention is to provide a detection method of an oxygen concentration detection device, comprising the following steps:

[0025] S1. Component assembly

[0026] Before using the main body of the oxygen concentration detector, the joint at the bottom of the air intake duct can be installed on the mounting seat. After installation, the protective frame can be installed between the two positioning frames. The protective frame scraper and other components provide isolation protection to prevent the scraper from being blocked by foreign objects.

[0027] S2. Installation and use

[0028] The user can directly hold the oxygen concentration detector body in his hand for use. If it needs to be hung on clothes, it can be clipped to the pocket of clothes or other fixed clamping places outside through the clip. When it is fixedly hung at other places outside, the circular plate can be rotated to adjust the angle of the oxygen concentration detector body, so as to adjust it to a more comfortable angle for the user to read the value;

[0029] S3. Oxygen concentration detection

[0030] After the main body of the oxygen concentration detector is turned on, the outside air is sucked into the main body of the oxygen concentration detector through the air intake duct for concentration detection. When the air enters, it will be filtered by the filter frame to remove impurities in the air;

[0031] S4, filter frame self-cleaning

[0032] When a large amount of impurities may be attached to the filter frame and affect the subsequent air flow, the motor can be controlled to work, and the scraper will then revolve around the filter frame as the axis, and the attached impurities can be properly cleaned and scraped off during the revolution.

[0033] In summary, the present invention includes the following beneficial technical effects:

[0034] 1. An oxygen concentration detection device and a detection method thereof. Through the design of a cleaning mechanism, when performing an oxygen concentration detection task, the filter frame can filter impurities from the incoming gas to prevent impurities from entering the device and causing damage to the device. At the same time, in order to prevent impurities from being adsorbed on the outside of the filter frame, the scraper can be controlled to continuously scrape the outer surface of the filter frame to clean out the impurities in time, properly ensuring the air passing efficiency and avoiding the situation where the detection work is affected by the accumulation of impurities due to the inability to clean in time by manual labor.

[0035] 2. An oxygen concentration detection device and a detection method thereof. Through the design of an external protection component, a protection frame is installed on the outside of the filter frame. During installation, the plug plate is inserted into the inside of the plug hole to complete the installation of the protection frame. The installation process is simple and convenient, and it can effectively prevent the scraper and other components from being squeezed and collided by external objects when rotating around the outside of the filter frame, resulting in restricted rotation, thereby ensuring the safety of the device during operation.

[0036] 3. An oxygen concentration detection device and a detection method thereof. Through the design of an adjustment mechanism, the oxygen concentration detector body can be clamped in the pocket of clothes or other fixed clampable locations outside by a clip. If it is clamped and hung at a fixed location outside, the base can be rotated to adjust the oxygen concentration detector body to the best angle for the user to view the detection data, thereby improving flexibility during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the structure of the present invention;

[0038] Figure 2 It is a disassembled diagram of the structure of the present invention;

[0039] Figure 3 It is a rear view of the present invention;

[0040] Figure 4 It is a cross-sectional structural diagram of the positioning frame in the present invention;

[0041] Figure 5 for Figure 4 Zoom in on point A in the figure;

[0042] Figure 6 is a cross-sectional structural diagram of the annular plate in the present invention;

[0043] Figure 7 for Figure 6 Zoom in on point B in the figure;

[0044] Figure 8 It is a cross-sectional structural diagram of the auxiliary frame in the present invention.

[0045] Explanation of the reference numerals: 1. oxygen concentration detector body; 2. mounting base; 3. air intake duct; 4. joint; 5. filter frame; 6. cleaning mechanism; 61. base frame; 62. ring plate; 63. vertical rod; 64. positioning plate; 65. support plate; 66. annular plate; 67. first rectangular frame; 68. second rectangular frame; 69. first threaded rod; 691. U-shaped plate; 692. control panel; 693. scraper; 694. motor; 695. auxiliary rod; 696. gear Wheel; 697, gear ring; 698, L-shaped plate; 699, second threaded rod; 681, protection frame; 682, positioning frame; 683, plug plate; 684, first push block; 685, first inclined plate; 686, first spring; 7, clip; 8, adjustment mechanism; 81, base; 82, round plate; 83, auxiliary frame; 84, guide block; 85, limiting hole; 86, limiting plate; 87, second push block; 88, second spring; 89, limit rod; 891, second inclined plate. DETAILED DESCRIPTION

[0046] The following is combined with Figure 1-8 The present invention is described in further detail.

[0047] The present invention discloses an oxygen concentration detection device. Figure 1-8 , an oxygen concentration detection device, comprising an oxygen concentration detector body 1, a mounting base 2 and an air intake duct 3, the mounting base 2 is fixedly connected to the top of the oxygen concentration detector body 1, a joint 4 is fixedly connected to the bottom of the air intake duct 3, a filter frame 5 is fixedly connected to the top of the air intake duct 3, the mounting base 2 extends into the inside of the joint 4 and is connected to the joint 4 by threads, and a cleaning mechanism 6 is arranged on the top of the oxygen concentration detector body 1;

[0048] The cleaning mechanism 6 includes a base frame 61, which is fixedly connected to the top of the oxygen concentration detector body 1, and the base frame 61 is arranged on the outside of the mounting seat 2. A ring plate 62 is rotatably connected inside the base frame 61, and the ring plate 62 extends out of the base frame 61. A vertical rod 63 is fixedly connected to the top of the ring plate 62, and a positioning plate 64 and a support plate 65 are respectively integrated on the vertical rod 63. An annular plate 66 is rotatably connected to the outside of the vertical rod 63, and the top and bottom of the annular plate 66 are respectively in contact with the positioning plate 64 and the support plate 65, and the outer side of the annular plate 66 is respectively integrated with a first moment. A U-shaped frame 67 and a second rectangular frame 68, the first rectangular frame 67 is slidably connected with a U-shaped plate 691 inside, the U-shaped plate 691 extends out of the first rectangular frame 67, the first rectangular frame 67 is rotatably connected with a first threaded rod 69 inside, the first threaded rod 69 passes through a side wall of the U-shaped plate 691 and is threadedly connected to the U-shaped plate 691, the first threaded rod 69 is fixedly connected with a control plate 692 outside the first threaded rod 69, the control plate 692 extends out of the first rectangular frame 67, a scraper 693 is fixedly connected to one side of the U-shaped plate 691, and the scraper 693 is in contact with the outer surface of the filter frame 5;

[0049] A motor 694 is fixedly connected to the top of the base frame 61, and the motor 694 is electrically connected to the main body 1 of the oxygen concentration detector. An auxiliary rod 695 is rotatably connected inside the base frame 61. The motor 694 is fixedly connected to the top of the auxiliary rod 695 through an output shaft. A gear 696 is fixedly connected to the outside of the auxiliary rod 695. A gear ring 697 is fixedly connected to the outside of the ring plate 62. The gear 696 is arranged on one side of the gear ring 697, and the gear 696 is meshed with the gear ring 697. When performing the oxygen concentration detection task, the filter frame 5 can filter impurities from the incoming gas to prevent impurities from entering the equipment and causing damage to the equipment. At the same time, in order to prevent impurities from being adsorbed on the outside of the filter frame 5, the scraper 693 can be controlled to continuously scrape the outer surface of the filter frame 5, so as to clean out the impurities in time, properly ensure the air passage efficiency, and avoid the situation where the detection work is affected by the accumulation of impurities due to manual cleaning.

[0050] An L-shaped plate 698 is slidably connected inside the second rectangular frame 68, and the L-shaped plate 698 extends out of the second rectangular frame 68. A second threaded rod 699 is rotatably connected inside the second rectangular frame 68. The second threaded rod 699 passes through the top wall of the L-shaped plate 698 and is connected to the L-shaped plate 698 by threads. The L-shaped plate 698 passes through the support plate 65. After the second threaded rod 699 rotates, it can drive the L-shaped plate 698 to move up and down.

[0051] The cleaning mechanism 6 includes an outer protection component, which includes a protection frame 681. The protection frame 681 is arranged on the outside of the filter frame 5. Two positioning frames 682 are fixedly connected to the top of the oxygen concentration detector body 1. The two positioning frames 682 are respectively arranged on both sides of the protection frame 681, and the positioning frames 682 are fitted with the outside of the protection frame 681. Plug holes are opened on both sides of the protection frame 681. The positioning frame 682 is internally slidably connected with a plug plate 683, which extends out of the outside of the positioning frame 682. The plug plate 683 passes through the plug hole and matches the plug hole. The positioning frame 682 is internally slidably connected with a first push block 684, which extends out of the outside of the positioning frame 682. After the plug plate 683 is inserted into the inside of the plug hole, the protection frame 681 can be limited.

[0052] A first inclined plate 685 is arranged between the first push block 684 and the plug plate 683, and two ends of the first inclined plate 685 extend to the inner sides of the first push block 684 and the plug plate 683 respectively, and the first inclined plate 685 is connected to the first push block 684 and the plug plate 683 respectively through a rotating shaft. After the first inclined plate 685 swings, the plug plate 683 can be pushed and pulled, and a first spring 686 is fixedly connected inside the positioning frame 682, and the top of the first spring 686 is fixedly connected to the bottom of the first push block 684, and the first spring 686 exerts an elastic thrust on the first push block 684.

[0053] A clip 7 is provided at the rear side of the oxygen concentration detector body 1, and an adjustment mechanism 8 is provided at the rear side of the oxygen concentration detector body 1. The adjustment mechanism 8 includes a base 81, and a circular plate 82 is rotatably connected inside the base 81, and the circular plate 82 extends out of the outside of the base 81. The clip 7 is fixedly connected to the rear side of the circular plate 82, and an auxiliary frame 83 is fixedly connected to the outside of the oxygen concentration detector body 1. A guide block 84 is fixedly connected to the rear side of the oxygen concentration detector body 1, and the clip 7 contacts the rear side of the guide block 84. When the guide block 84 is clamped, the object to be clamped can smoothly enter the inner side of the clip 7 through the guidance of the guide block 84;

[0054] Both the base 81 and the circular plate 82 are provided with limiting holes 85, and the adjacent limiting holes 85 on the base 81 and the circular plate 82 are connected. A limiting plate 86 is arranged inside the auxiliary frame 83, and the limiting plate 86 extends out of the outside of the auxiliary frame 83. One end of the limiting plate 86 extends into the limiting hole 85 and matches the limiting hole 85. A second push block 87 is slidably connected inside the auxiliary frame 83, and the second push block 87 extends out of the outside of the auxiliary frame 83. A second spring 88 is fixedly connected to the second push block 87, and the second spring 88 is fixedly connected to the inside of the auxiliary frame 83. Two limit rods 89 are fixedly connected inside the auxiliary frame 83, and the two limit rods 89 both penetrate the limiting plate 86. The second spring 88 exerts an elastic force on the second push block 87. A second inclined plate 891 is arranged between the second push block 87 and the limiting plate 86. The front and rear ends of the second inclined plate 891 are respectively movably connected to the push block and the limiting plate 86 through a movable hinge seat. After the second inclined plate 891 swings, the limiting plate 86 can be pushed and pulled.

[0055] Another technical problem to be solved by the present invention is to provide a detection method of an oxygen concentration detection device, comprising the following steps:

[0056] S1. Component assembly

[0057] Before using the oxygen concentration detector body 1, the connector 4 at the bottom of the air intake duct 3 can be installed on the mounting base 2. After installation, the protective frame 681 is installed between the two positioning frames 682. The protective frame 681 provides isolation protection for the operation of the scraper 693 and other components to prevent the scraper 693 from being blocked by foreign objects.

[0058] S2. Installation and use

[0059] The user can directly hold the oxygen concentration detector body 1 in his hand for use. If it needs to be hung on clothes, it can be clamped in the pocket of clothes or other fixed clampable places outside through the clip 7. When it is fixedly hung at other places outside, the circular plate 82 can be rotated to adjust the angle of the oxygen concentration detector body 1, so as to adjust it to a more comfortable angle for the user to read the value;

[0060] S3. Oxygen concentration detection

[0061] After the oxygen concentration detector body 1 is turned on, the outside air is sucked into the oxygen concentration detector body 1 through the air intake duct 3 for concentration detection. When the air enters, it is filtered by the filter frame 5 to remove impurities in the air.

[0062] S4, filter frame 5 self-cleaning

[0063] When a large amount of impurities may be attached to the filter frame 5 and affect the subsequent air flow, the motor 694 can be controlled to work, and the scraper 693 will then revolve around the filter frame 5 as the axis, and the attached impurities can be properly cleaned and scraped off during the revolution.

[0064] In the actual operation process, firstly, the device is connected to the power supply. The oxygen concentration detector body 1 is the existing oxygen concentration detector structure. Since this is the existing structure, its specific structure will not be further described here. After the oxygen concentration detector body 1 is turned on, the outside air is sucked into the oxygen concentration detector body 1 through the air intake duct 3 for concentration detection. When the air enters, it will be filtered by the filter frame 5 to remove impurities in the air. After long-term use, the filter frame 5 may be adsorbed with too many impurities, resulting in the subsequent air not passing smoothly. At this time, the motor 694 can be controlled to work. After the motor 694 works, it drives the gear 696 to rotate, the gear 696 drives the gear ring 697 to rotate, the gear ring 697 drives the ring plate 62 to rotate, and the ring plate 62 drives the vertical rod 63 to revolve around the air intake duct 3 as the axis. It can be seen from the above connection relationship that at this time, the scraper 693 can scrape off the impurities on the outside of the filter frame 5 in the process of following the movement of the vertical rod 63;

[0065] When the air intake duct 3 needs to be dismantled, replaced or maintained, in order to avoid the scraper 693 from hindering its disassembly, the first threaded rod 69 can be rotated first, and the first threaded rod 69 drives the U-shaped plate 691 to move. After the U-shaped plate 691 drives the scraper 693 to move to one side of the filter frame 5, the second threaded rod 699 is rotated, and the second threaded rod 699 drives the L-shaped plate 698 to move to the top of the supporting plate 65. At this time, the annular plate 66 can be rotated. After the annular plate 66 is rotated to move the scraper 693 to the side away from the filter frame 5, the filter frame 5 can be smoothly loaded and unloaded.

[0066] In addition, in order to prevent the scraper 693 and other components from being squeezed and collided by external objects when rotating around the outer side of the filter frame 5, a protective frame 681 can be installed on the outer side of the filter frame 5 to properly play a protective role. During installation, the two first push blocks 684 are pushed downward synchronously, and after the protective frame 681 is taken to the position between the two positioning frames 682 and the plug plate 683 corresponds to the plug hole, the first push block 684 is stopped. Due to the elastic force of the first spring 686, the first push block 684 moves back, and the first push block 684 drives the first inclined plate 685 to swing. During the swinging process of the first inclined plate 685, the plug plate 683 is pushed to prompt the plug plate 683 to be inserted into the plug hole. The installation of the protective frame 681 is completed. The installation process is simple and convenient, which is conducive to the user's quick operation.

[0067] Finally, the oxygen concentration detector body 1 can be clamped in the pocket of clothes or other fixed clampable locations outside through the clip 7. If it is clamped and hung at a fixed location outside, after the second push block 87 is pushed, the second inclined plate 891 swings to push the limiting plate 86, similar to the principle after the first push block 684 is pushed above. When the limiting plate 86 leaves the limiting hole 85, the base 81 can be rotated, and the base 81 drives the oxygen concentration detector body 1 to swing. When it swings to a suitable angle range, the limiting hole 85 on the base 81 within this range is selected to correspond to the limiting hole 85 on the circular plate 82. The elastic force of the second spring 88 prompts the limiting plate 86 to be inserted into the limiting hole 85, and the base 81 can no longer be rotated. In this way, the oxygen concentration detector body 1 can be adjusted to the best angle for the user to view the detection data, thereby improving the flexibility during use.

[0068] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An oxygen concentration detection device, comprising an oxygen concentration detector body (1), a mounting base (2) and an air intake duct (3), characterized in that: The mounting seat (2) is fixedly connected to the top of the oxygen concentration detector body (1); the bottom of the air intake duct (3) is fixedly connected to a joint (4); the top of the air intake duct (3) is fixedly connected to a filter frame (5); the mounting seat (2) extends into the joint (4) and is threadedly connected to the joint (4); and a cleaning mechanism (6) is provided on the top of the oxygen concentration detector body (1); The cleaning mechanism (6) comprises a base frame (61), the base frame (61) being fixedly connected to the top of the oxygen concentration detector body (1), the base frame (61) being arranged on the outside of the mounting seat (2), the base frame (61) being internally rotatably connected to a ring plate (62), the ring plate (62) extending out of the base frame (61), the top of the ring plate (62) being fixedly connected to a vertical rod (63), the vertical rod (63) being respectively integrally formed with a positioning plate (64) and a supporting plate (65), the outer side of the vertical rod (63) being rotatably connected to an annular plate (66), the top and bottom of the annular plate (66) being respectively in contact with the positioning plate (64) and the supporting plate (65), the outer side of the annular plate (66) being respectively integrally formed with the positioning plate (64) and the supporting plate (65). A first rectangular frame (67) and a second rectangular frame (68) are provided, wherein a U-shaped plate (691) is slidably connected to the interior of the first rectangular frame (67), and the U-shaped plate (691) extends out of the outside of the first rectangular frame (67); a first threaded rod (69) is rotatably connected to the interior of the first rectangular frame (67), and the first threaded rod (69) passes through a side wall of the U-shaped plate (691) and is threadedly connected to the U-shaped plate (691); an operating plate (692) is fixedly connected to the exterior of the first threaded rod (69), and the operating plate (692) extends out of the first rectangular frame (67); a scraper (693) is fixedly connected to one side of the U-shaped plate (691), and the scraper (693) is in contact with the outer surface of the filter frame (5); A motor (694) is fixedly connected to the top of the base frame (61), and the motor (694) is electrically connected to the oxygen concentration detector body (1). An auxiliary rod (695) is rotatably connected inside the base frame (61). The motor (694) is fixedly connected to the top of the auxiliary rod (695) via an output shaft. A gear (696) is fixedly connected to the outside of the auxiliary rod (695). A gear ring (697) is fixedly connected to the outside of the ring plate (62). The gear (696) is arranged on one side of the gear ring (697), and the gear (696) is meshed with the gear ring (697). The cleaning mechanism (6) comprises an outer protection component, the outer protection component comprises a protection frame (681), the protection frame (681) is arranged on the outside of the filter frame (5), the top of the oxygen concentration detector body (1) is fixedly connected to two positioning frames (682), the two positioning frames (682) are respectively arranged on both sides of the protection frame (681), and the positioning frames (682) are in contact with the outer side of the protection frame (681), both sides of the protection frame (681) are provided with plug holes, and the positioning frame (682) is slidably connected to the inside of the positioning frame (682) with a plug plate (683), and the plug plate (683) extends The insert plate (683) extends out of the positioning frame (682), the insert plate (683) passes through the insert hole and matches the insert hole, the positioning frame (682) is internally slidably connected with a first push block (684), the first push block (684) extends out of the positioning frame (682), a first inclined plate (685) is provided between the first push block (684) and the insert plate (683), two ends of the first inclined plate (685) extend to the inside of the first push block (684) and the insert plate (683), and the first inclined plate (685) is respectively connected to the first push block (684) and the insert plate (683) through a rotating shaft.

2. An oxygen concentration detection device according to claim 1, characterized in that: An L-shaped plate (698) is slidably connected inside the second rectangular frame (68), and the L-shaped plate (698) extends outside the second rectangular frame (68). A second threaded rod (699) is rotatably connected inside the second rectangular frame (68), and the second threaded rod (699) passes through the top wall of the L-shaped plate (698) and is connected to the L-shaped plate (698) by threads. The L-shaped plate (698) passes through the support plate (65).

3. An oxygen concentration detection device according to claim 1, characterized in that: A first spring (686) is fixedly connected inside the positioning frame (682), and the top of the first spring (686) is fixedly connected to the bottom of the first push block (684).

4. The oxygen concentration detection device according to claim 1, characterized in that: A clip (7) is provided on the rear side of the oxygen concentration detector body (1); an adjustment mechanism (8) is provided on the rear side of the oxygen concentration detector body (1); the adjustment mechanism (8) comprises a base (81); a circular plate (82) is rotatably connected inside the base (81); the circular plate (82) extends out of the base (81); the clip (7) is fixedly connected to the rear side of the circular plate (82); an auxiliary frame (83) is fixedly connected to the outside of the oxygen concentration detector body (1); a guide block (84) is fixedly connected to the rear side of the oxygen concentration detector body (1); and the clip (7) is in contact with the rear side of the guide block (84).

5. An oxygen concentration detection device according to claim 4, characterized in that: The base (81) and the circular plate (82) are both provided with limiting holes (85), and adjacent limiting holes (85) on the base (81) and the circular plate (82) are connected to each other. A limiting plate (86) is provided inside the auxiliary frame (83), and the limiting plate (86) extends out of the outside of the auxiliary frame (83). One end of the limiting plate (86) extends into the limiting hole (85) and matches the limiting hole (85). A second push block (87) is slidably connected inside the auxiliary frame (83), and the second push block (87) extends out of the outside of the auxiliary frame (83). A second spring (88) is fixedly connected to the second push block (87), and the second spring (88) is fixedly connected to the inside of the auxiliary frame (83). Two limiting rods (89) are fixedly connected inside the auxiliary frame (83), and both limiting rods (89) pass through the limiting plate (86).

6. An oxygen concentration detection device according to claim 5, characterized in that: A second inclined plate (891) is provided between the second push block (87) and the limiting plate (86), and front and rear ends of the second inclined plate (891) are movably connected to the push block and the limiting plate (86) respectively via movable hinge seats.

7. A detection method for oxygen concentration detection equipment according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Component assembly Before using the oxygen concentration detector body (1), the joint (4) at the bottom of the air intake duct (3) can be installed on the mounting base (2). After the installation, the protective frame (681) is installed between the two positioning frames (682). The protective frame (681) provides isolation protection for the operation of the scraper (693) and other components to prevent the scraper (693) from being blocked by contact with external objects. S2. Installation and use The user can directly hold the oxygen concentration detector body (1) in his hand for use. If it is necessary to hang it on clothes, the user can clip it to a pocket of clothes or other fixed clampable locations outside through the clip (7). When it is fixedly hung at other locations outside, the circular plate (82) can be rotated to adjust the angle of the oxygen concentration detector body (1) to adjust it to an angle that is more comfortable for the user to read the value. S3. Oxygen concentration detection After the oxygen concentration detector body (1) is turned on, outside air is sucked into the oxygen concentration detector body (1) through the air intake duct (3) for concentration detection. When the air enters, it is filtered by the filter frame (5) to remove impurities in the air. S4, filter frame (5) self-cleaning When a large amount of impurities may be attached to the filter frame (5) and affect the subsequent passage of air, the motor (694) can be controlled to work, and the scraper (693) then revolves around the filter frame (5) as the axis, and the attached impurities can be properly cleaned and scraped off during the revolution.

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