A device for detecting air carbon dioxide concentration for carbon neutralization

Abstract

The present invention belongs to the technical field of carbon dioxide concentration detection, and specifically relates to an air carbon dioxide concentration detection device for carbon neutralization, including a detector body and an air inlet end, the air inlet end is clamped at the end of the detector body, a mounting port is provided at the end of the detector body, one end of the air inlet end is clamped inside the mounting port, a positioning plate and a light source module are clamped inside the detector body, an inner slot hole is provided in the middle of the positioning plate, a protruding ring is provided on one side of the light source module, one end of the air inlet end is inserted between the inner slot hole and the ring, the air inlet end includes an air inlet head, an inner cover is sleeved on the outside of the air inlet head, and an outer cover is rotatably installed on the outside of the inner cover. The present invention can achieve the sealing of the detector object, and the sealing of the air inlet head is tighter, which improves the waterproof and air leakage-proof performance of the detector, thereby ensuring the extension of the service life of the detector and enhancing the accuracy of detection.

Description

Technical Field

[0001] The present invention belongs to the technical field of carbon dioxide concentration detection, and in particular relates to an air carbon dioxide concentration detection device for carbon neutralization. Background Art

[0002] Carbon neutrality is a term for energy conservation and emission reduction. Carbon neutrality is achieved by reducing greenhouse gas emissions and reducing greenhouse gas emissions through means such as afforestation, achieving positive and negative offsets and achieving relative "zero emissions";

[0003] With the increase of greenhouse gases in the atmosphere, and carbon dioxide accounting for the largest proportion of the total greenhouse gases, the increase of carbon dioxide in the atmosphere is a threat to the development of human civilization, especially the impact on the environment. Therefore, it is necessary to detect carbon dioxide in the atmosphere. Carbon dioxide detectors are mostly used for detection, and they are easy to carry.

[0004] Problems with existing technologies:

[0005] According to an air carbon dioxide concentration detection device for carbon neutralization in the prior art, the classification number is: CN202121430509.1, which discloses an air carbon dioxide concentration detection device for carbon neutralization, which relates to the field of carbon neutralization, including a detection device body, an air intake head is provided on the detection device body, and two protective covers are provided on the air intake head, and mounting blocks are fixedly installed on the two protective covers, and a support rod is rotatably installed on the two mounting blocks, and one support rod is rotatably installed on the other support rod, and a T-shaped slider is provided on the back of the detection device body, and a push button is provided on the T-shaped slider, and a mounting shaft is fixedly installed on the push button, and the two support rods are movably sleeved on the mounting shaft; in the disclosed technical solution, through the provision of two protective covers, when the detection device body stops being used, the two protective covers can cover it, which can not only avoid damage caused by collision, but also avoid the problem of dust accumulation or contamination in the air intake head, thereby extending the service life of the detection device body and meeting people's needs;

[0006] However, in actual use, the expansion rod may get stuck during the pushing process, which makes the use process more laborious. In addition, the closed cover structure still has air leakage, and the detector body cannot be waterproof, which also causes inaccurate test results. Summary of the invention

[0007] The purpose of the present invention is to provide an air carbon dioxide concentration detection device for carbon neutralization, which can achieve sealing of the detector object, and the sealing of the air inlet head is tighter, thereby improving the waterproof and anti-leakage performance of the detector, thereby ensuring the extension of the service life of the detector and enhancing the accuracy of detection.

[0008] The technical solution adopted by the present invention is as follows:

[0009] An air carbon dioxide concentration detection device for carbon neutralization comprises a detector body and an air inlet end, wherein the air inlet end is clamped at the end of the detector body;

[0010] Wherein, a mounting opening is provided at the end of the detector body, and one end of the air inlet end is clamped inside the mounting opening.

[0011] Furthermore, a positioning plate and a light source module are clamped inside the detector body, an inner slot hole is opened in the middle of the positioning plate, a protruding ring is provided on one side of the light source module, one end of the air inlet end is inserted between the inner slot hole and the ring, the air inlet end includes an air inlet head, an inner cover is sleeved on the outer side of the air inlet head, an outer cover is rotatably installed on the outer side of the inner cover, the inner sides of the inner cover and the outer cover are both hollow, and the openings on the sides of the inner cover and the outer cover are arranged in staggered opening positions.

[0012] Furthermore, a connecting groove is provided on the outer side of the inner cover end, and a plurality of "L"-shaped protruding elastic positioning pieces are evenly distributed on the inner side of the outer cover end, and each of the elastic positioning pieces is rotatably clamped in the inside of the connecting groove, and a magnetic connecting part corresponding to the elastic positioning piece is provided at the bottom of the connecting groove, and the number of the elastic positioning pieces and the magnetic connecting part is the same, and at least two are provided, and the elastic positioning pieces and the magnetic connecting part are magnetically attracted to each other.

[0013] Furthermore, the detector body includes a bottom shell, a button shell and an interface cover that are clamped together. A side adhesive tape for bonding the bottom shell, the button shell and the interface cover is provided on the side of the detector body, and a clamping adhesive tape is bonded and clamped between the button shell and the interface cover.

[0014] Furthermore, a plurality of circuit board assemblies electrically connected to each other are clamped inside the detector body, and the circuit board assemblies are all connected to the inner wall of the detector body. A penetrating external interface is opened between the side adhesive tape and one side of the detector body, and an interface cover is inserted into the external interface.

[0015] Furthermore, the bottom surface of the clamping adhesive tape is provided with a clamping plate for clamping between the interface cover and the button shell, the bottom surface of the clamping adhesive tape is engaged with the button shells on both sides and the top of the interface cover, the bottom of the button shell is provided with a protruding clamping plate, and the button shell and the interface cover are clamped together by the clamping plate.

[0016] Furthermore, the positioning plate is fitted with the side of the light source module, an infrared light source generator is plugged into the interior of the light source module, a light-emitting end is protruding from one side of the infrared light source generator, the light-emitting end is plugged into the interior of the ring, and a convex ring is provided between the ring and the inner groove hole.

[0017] Furthermore, the interior of the air inlet head is hollow, a plurality of air inlet holes are provided on the side of the air inlet head, a slot is provided on the side of the opening of the air inlet head, and the convex ring is tightly inserted in the slot.

[0018] Furthermore, a locking groove and a connecting rotation groove are sequentially provided on the side surface of one end of the inner cover opening, and a protruding limiting block is provided inside the locking groove. The limiting block fits and is connected inside the installation port to limit the rotation of the inner cover.

[0019] Furthermore, a rotating ring is provided on the outer side of the opening at the end of the outer cover, a plurality of elastic positioning pieces are evenly arranged on the inner side of the rotating ring, and a rebound groove is provided between the elastic positioning piece and the rotating ring;

[0020] Wherein, the inner side of the elastic positioning piece is interference fit with the outer side of the limiting block.

[0021] Furthermore, a positioning cover is provided at the other end of the outer cover, a rotation positioning groove is provided at the inner side of the positioning cover, and the other end of the inner cover is rotatably inserted into the rotation positioning groove.

[0022] Furthermore, magnetic strips are slidably inserted on both sides of the outer cover, the cross-section of the magnetic strip is triangular, a limit clamping strip for sliding engagement is provided on the side of the magnetic strip adjacent to the outer cover, a magnetic end is provided on the side of the magnetic strip away from the outer cover, and a plurality of rewinding grooves are provided on the outer side of the magnetic strip.

[0023] The technical effects achieved by the present invention are:

[0024] During use of the carbon dioxide concentration detector in the air for carbon neutralization of the present invention, the bottom shell, the button shell and the interface cover are sealed by the side adhesive tape, and the infiltration of moisture can be reduced to avoid inaccurate detection results, and the waterproof effect can be further achieved. The splint can also provide filling for the button shells and the interface covers on both sides to further achieve sealing and waterproofing, and prevent air leakage, and further improve the airtightness of the inside of the detector body.

[0025] In the present invention, since the elastic positioning pieces and the magnetic connecting parts are magnetically attracted to each other and are arranged in the same number, after the outer cover is installed on the outside of the inner cover, the inner elastic positioning pieces and the magnetic connecting parts are rotated to achieve mutual attraction between the two, thereby completing the positioning of the inner cover and the outer cover. At this time, the inner cover and the outer cover with staggered openings can achieve the enlargement and reduction of the openings, thereby realizing the switch setting. This operation is simple and easy to operate, and the structure is simple and not easy to be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 is an exploded view of the present invention;

[0028] Figure 3 The present invention Figure 2 The enlarged view of point A in the middle;

[0029] Figure 4 The present invention Figure 2 The enlarged view of point B in the middle;

[0030] Figure 5 is a cross-sectional view of the positioning plate and the light source module DD in the present invention;

[0031] Figure 6 The present invention Figure 5 Enlarged view of point C in the middle;

[0032] Figure 7 is a disassembled diagram of the air intake end of the present invention;

[0033] Figure 8 It is a structural schematic diagram of the air intake head in the present invention;

[0034] Fig. 9 It is a schematic diagram of the structure of the outer cover in the present invention;

[0035] Fig.10 The present invention Fig. 9 Sectional view of EE in the middle;

[0036] Fig.11 is an end view of the outer cover of the present invention;

[0037] Fig.12 The present invention Fig.11 Enlarged view of point F in the middle. DETAILED DESCRIPTION

[0038] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention.

[0039] Embodiment 1:

[0040] like Figure 1-3 As shown, an air carbon dioxide concentration detection device for carbon neutralization includes a detector body 1 and an air inlet end 2, and the air inlet end 2 is clamped at the end of the detector body 1.

[0041] The detector body 1 includes a bottom shell 101, a button shell 102 and an interface cover 103 which are mutually engaged;

[0042] Because during the use of the air carbon dioxide concentration detector for carbon neutralization, the bottom shell 101, the button shell 102 and the interface cover 103 are spliced ​​together, and are clamped together with the card plate 107 through the set limiting convex strips 109, there will be a certain degree of structural looseness, which is easy to cause air leakage.

[0043] In order to solve the problem of air leakage in the detector body 1, the specific solution of this embodiment is as follows:

[0044] The side of the detector body 1 is provided with a side adhesive tape 104 for bonding the bottom shell 101, the button shell 102 and the interface cover 103, and a clamping adhesive tape 105 is bonded and clamped between the button shell 102 and the interface cover 103;

[0045] The air inlet end 2 comprises an air inlet head 201 , an inner cover 202 is sleeved on the outer side of the air inlet head 201 , and an outer cover 203 is rotatably mounted on the outer side of the inner cover 202 .

[0046] Furthermore, a protruding clamping plate 107 is provided at the bottom of the button shell 102 , and the button shell 102 and the interface cover 103 are clamped together through the clamping plate 107 .

[0047] Furthermore, the inner sides of the inner cover 202 and the outer cover 203 are both hollow, the openings on the sides of the inner cover 202 and the outer cover 203 are arranged in staggered opening positions, the interior of the air inlet head 201 is hollow, a plurality of air inlet holes 2011 are provided on the side of the air inlet head 201, a slot 2012 is provided on the side of the opening of the air inlet head 201, and the convex ring 117 is tightly inserted into the slot 2012.

[0048] The side adhesive tape 104 that adheres the bottom shell 101 to the button shell 102 and the interface cover 103 can achieve sealing, reduce the penetration of moisture, avoid inaccurate detection results, and further improve the waterproof effect.

[0049] In this embodiment, refer to the attached Figure 2-3 The bottom surface of the clamping adhesive tape 105 is provided with a clamping plate 119 for clamping between the interface cover 103 and the key shell 102 , and the bottom surface of the clamping adhesive tape 105 is engaged with the key shells 102 on both sides and the top of the interface cover 103 .

[0050] When assembling the detector body 1 for detecting the carbon dioxide concentration, the clamp 119 is installed inside the interference clamp groove 120 set between the button shell 102 and the interface cover 103 on both sides, the button shell 102 and the interface cover 103 on both sides are clamped together by the clamping plate 107, and the clamp 119 is clamped by the interference clamp groove 120.

[0051] In addition, a button is provided on the surface of the button shell 102, and the button is also tightly bonded and connected to the button shell 102;

[0052] A display screen is installed on the surface of the interface cover 103, and a rubber bonding structure is added to the side of the display screen to bond the side of the display screen to the inner side of the interface cover 103, thereby achieving a waterproof and air leakage-proof effect.

[0053] At the same time, in order to solve the problem that the air inlet end 2 of the detector body 1 is difficult to use and easy to damage, in this embodiment, reference Figure 7 and Fig. 9 - Fig.10 A connecting groove 2023 is provided on the outer side of the end of the inner cover 202, and a plurality of "L"-shaped protruding elastic positioning pieces 2032 are evenly distributed on the inner side of the end of the outer cover 203, and each elastic positioning piece 2032 is rotatably clamped in the inside of the connecting groove 2023, and a magnetic connecting part 2024 corresponding to the elastic positioning piece 2032 is provided at the bottom of the connecting groove 2023.

[0054] The number of the elastic positioning pieces 2032 and the number of the magnetic connecting parts 2024 is the same, and at least two are provided. The inner side of the elastic positioning piece 2032 is interference-fitted with the outer side of the limiting block 2022 .

[0055] When installing the outer cover 203, the outer cover 203 is sleeved on the outer side of the inner cover 202. Due to the interference fit between the inner side of the elastic positioning piece 2032 and the outer side of the inner cover 202, the outer side of the inner cover 202 squeezes the elastic positioning piece 2032 to deform, causing the elastic positioning piece 2032 to deflect toward the side of the rebound groove 2033. After the elastic positioning piece 2032 is completely installed in the connecting groove 2023, the elastic positioning piece 2032 rebounds and supports the outer cover 203.

[0056] A swivel 2031 is provided on the outer side of the opening at the end of the outer cover 203, and a plurality of elastic positioning pieces 2032 are evenly arranged on the inner side of the swivel 2031. A rebound groove 2033 is provided between the elastic positioning piece 2032 and the swivel 2031. The elastic positioning piece 2032 and the magnetic connecting part 2024 are magnetically attracted to each other, and the same number is provided.

[0057] The clamping plate 119 is made of an elastic rubber plate. After the key shells 102 and the interface cover 103 on both sides clamp the clamping plate 119, the clamping gap can be sealed, and the key shells 102 and the interface cover 103 on both sides are further adhered by the clamping adhesive tape 105 to achieve waterproof and airtight sealing, thereby further improving the airtightness of the inside of the detector body 1.

[0058] After the outer cover 203 is installed on the outside of the inner cover 202, the internal elastic positioning piece 2032 and the magnetic connecting part 2024 are rotated by rotating the rotating ring 2031, and the inner cover 202 and the outer cover 203 are positioned again by the mutual attraction between the two. At this time, the inner cover 202 and the outer cover 203 with staggered openings can increase and decrease the openings, thereby realizing the switch setting. This operation is simple and easy to operate, and the structure is simple and not easy to be damaged.

[0059] Since the circuit board assembly 111 generates a certain amount of heat in the working state, in order to solve the problem of excessively high temperature inside the detector body 1, the present embodiment is specifically described in detail with reference to the attached Figure 2-4 A plurality of circuit board assemblies 111 electrically connected to each other are clamped inside the detector body 1 , and the circuit board assemblies 111 are all connected to the inner side wall of the detector body 1 .

[0060] An external interface 110 is formed between the side adhesive tape 104 and one side of the detector body 1 , and an interface cover 106 is inserted into the external interface 110 .

[0061] Combined with the above structure, the external interface 110 passes through the surface of the side adhesive tape 104, and an interface cover 106 with interference fit is clamped inside the external interface 110, and is connected through a rubber pad on one side of the interface cover 106, so that the interface cover 106 can be flexibly hinged to the side of the side adhesive tape 104. During the charging or data transmission of the detector body 1, the data cable can be electrically connected to the data interface on the side of the circuit board assembly 111 by opening the interface cover 106.

[0062] For further information, please refer to the attached Figure 5-6 , wherein the circuit board assembly 111 includes not only a circuit board, but also a connecting cable for connecting multiple circuits, and the circuit board assembly 111, the light source module 113 and the set power module are electrically connected through wires, because the circuit board assembly 111 is clamped with the inner side of the detector body 1.

[0063] When heat is generated on the circuit board assembly 111 , the heat can be transferred to the surface of the detector body 1 through the circuit board assembly 111 , thereby achieving a certain amount of heat transfer and a certain degree of heat dissipation.

[0064] Embodiment 2:

[0065] See attached Figure 6-8 A mounting opening 108 is provided at the end of the detector body 1 , and one end of the air inlet end 2 is clamped inside the mounting opening 108 .

[0066] In addition, a positioning plate 112 and a light source module 113 are clamped inside the detector body 1. An inner groove hole 116 is opened in the middle of the positioning plate 112, and a protruding ring 118 is provided on one side of the light source module 113. One end of the air inlet end 2 is inserted between the inner groove hole 116 and the ring 118.

[0067] The positioning plate 112 is fitted with the side of the light source module 113, and an infrared light source generator 114 is inserted inside the light source module 113. A light-emitting end 115 protrudes from one side of the infrared light source generator 114, and the light-emitting end 115 is inserted into the inside of the ring 118. A convex ring 117 is provided between the ring 118 and the inner groove hole 116.

[0068] The light source module 113 adhered thereto is fixedly installed by the positioning plate 112 , and the light emitting end 115 is positioned by the collar 118 .

[0069] Because, during the process of installing the air inlet end 2, by inserting the end of the air inlet head 201 into the inner side of the inner groove hole 116, there will also be a gap at the connection, causing air leakage.

[0070] In order to solve the problem of air leakage at the connection between the detector body 1 and the air inlet end 2, in this embodiment, the slot 2012 is specifically buckled on the convex ring 117, and the convex ring 117 and the slot 2012 are interference fit. After the air inlet head 201 and the convex ring 117 are completely buckled, the air inlet head 201 can be positioned and installed. In addition, the compactness of the internal structure can be enhanced, and the waterproof and anti-leakage effect of the detector body 1 can be further enhanced.

[0071] In addition, in this embodiment, reference Figure 2 and Figure 6 - Figure 7 A locking groove 2021 and a connecting groove 2023 are sequentially provided on the side of the opening end of the inner cover 202. A protruding limiting block 2022 is provided inside the locking groove 2021. The limiting block 2022 fits and is connected to the inside of the installation port 108 to limit the rotation of the inner cover 202.

[0072] A positioning cover 2035 is provided at the other end of the outer cover 203, and a rotation positioning groove 2036 is opened inside the positioning cover 2035. The other end of the inner cover 202 is rotatably inserted into the rotation positioning groove 2036. The rotation stability can be achieved through the rotation cooperation between the rotation positioning groove 2036 and the other end of the inner cover 202.

[0073] The working principle of this embodiment is as follows: when installing the inner cover 202, the inner cover 202 is sleeved on the outside of the air inlet head 201, and is clamped in the limiting positioning groove 2021 through the installation port 108 to achieve the positioning installation of the inner cover 202. Since a limiting block 2022 is provided on one side of the limiting positioning groove 2021, the rotation of the inner cover 202 can be avoided after the inner cover 202 is installed, and the stability of the installation structure is further improved.

[0074] Embodiment three:

[0075] Since there is still a certain degree of gap between the inner cover 202 and the outer cover 203, there is still a certain risk of air leakage. In order to solve the problem of air leakage between the inner cover 202 and the outer cover 203, in this embodiment, refer to the attached Figure 11-12 Specifically, magnetic strips 2034 are slidably inserted on both sides of the outer cover 203; the cross-section of the magnetic strip 2034 is triangular in design, and a limit card strip 20343 for sliding engagement is provided on the side of the magnetic strip 2034 adjacent to the outer cover 203, and a magnetic end 20341 is provided on the side of the magnetic strip 2034 away from the outer cover 203, and a plurality of rewind grooves 20342 are provided on the outer side of the magnetic strip 2034.

[0076] Among them, the magnetic stripe 2034 is a soft material with magnetism, including a magnet synthesized with rubber. The inner cover 202 is a material that can attract the magnetic stripe 2034, including any one of iron and magnetic materials. Magnetic stripes 2034 are provided on both sides of the outer cover 203. When the magnetic stripe 2034 is not in contact with the side of the inner cover 202, the magnetic stripe 2034 is in a curled state away from the inner cover 202, thereby avoiding the magnetic stripe 2034 and the inner cover 202 from being stuck when the outer cover 203 is rotated, thereby achieving smooth rotation of the outer cover 203.

[0077] The working principle of this embodiment is as follows: when the outer cover 203 is rotated and the magnetic strip 2034 contacts the side of the inner cover 202, since the magnetic strip 2034 is magnetic and the outer side of the inner cover 202 can be attracted to the magnetic strip 2034, the inner side of the magnetic strip 2034 and the outer side of the inner cover 202 can be tightly fitted, and during the sliding process of the magnetic strip 2034, the magnetic strip 2034 and the inner cover 202 are always tightly fitted.

[0078] The rewinding groove 20342 is provided to facilitate the curling of the magnetic strip 2034. When installing the magnetic strip 2034, the limiting card strip 20343 is squeezed and deformed and installed with interference fit inside the outer cover 203, thereby achieving the installation of the magnetic strip 2034.

[0079] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. An air carbon dioxide concentration detection device for carbon neutralization, characterized in that: include: Detector body; An air inlet end, the air inlet end being clamped on the end of the detector body; Wherein, a mounting opening is provided at the end of the detector body, and one end of the air inlet end is clamped inside the mounting opening; A positioning plate and a light source module are clamped inside the detector body, an inner slot hole is opened in the middle of the positioning plate, a protruding collar is provided on one side of the light source module, and one end of the air inlet end is inserted between the inner slot hole and the collar; The air inlet end comprises an air inlet head, an inner cover is sleeved on the outer side of the air inlet head, and an outer cover is rotatably mounted on the outer side of the inner cover; the inner and outer covers are both hollow inside, and the openings on the sides of the inner and outer covers are arranged in staggered opening positions; A connecting groove is provided on the outer side of the inner cover end, and a plurality of "L"-shaped protruding elastic positioning pieces are evenly distributed on the inner side of the outer cover end, and each of the elastic positioning pieces is rotatably clamped in the inside of the connecting groove, and a magnetic connecting part corresponding to the elastic positioning piece is provided at the bottom of the connecting groove; the elastic positioning piece and the magnetic connecting part are magnetically attracted to each other.

2. The device for detecting air carbon dioxide concentration for carbon neutralization according to claim 1, characterized in that: The detector body includes a bottom shell, a button shell and an interface cover which are clamped together. A side adhesive tape for bonding the bottom shell, the button shell and the interface cover is provided on the side of the detector body. A clamping adhesive tape is adhered and clamped between the button shell and the interface cover.

3. The device for detecting the concentration of carbon dioxide in air for carbon neutralization according to claim 2, characterized in that: A plurality of circuit board assemblies electrically connected to each other are clamped inside the detector body, and the circuit board assemblies are all connected to the inner side wall of the detector body; A penetrating external interface is formed between the side adhesive tape and one side of the detector body, and an interface cover is inserted into the external interface.

4. The device for detecting the concentration of carbon dioxide in air for carbon neutralization according to claim 2, characterized in that: The bottom surface of the clamping adhesive tape is provided with a clamping plate for clamping between the interface cover and the key shell, and the bottom surface of the clamping adhesive tape is engaged with the key shells on both sides and the top of the interface cover; A protruding clamping plate is provided at the bottom of the button shell, and the button shell is clamped with the interface cover through the clamping plate.

5. The device for detecting air carbon dioxide concentration for carbon neutralization according to claim 1, characterized in that: The positioning plate is fitted with the side of the light source module, an infrared light source generator is plugged into the interior of the light source module, a light-emitting end is protruded from one side of the infrared light source generator, the light-emitting end is plugged into the interior of the ring, and a convex ring is provided between the ring and the inner groove hole.

6. The device for detecting the concentration of carbon dioxide in air for carbon neutralization according to claim 5, characterized in that: The interior of the air inlet head is hollow, a plurality of air inlet holes are arranged on the side of the air inlet head, a slot is arranged on the side of the opening of the air inlet head, and the convex ring is tightly inserted in the slot.

7. The device for detecting air carbon dioxide concentration for carbon neutralization according to claim 1, characterized in that: A locking groove and a connecting rotation groove are sequentially provided on the side surface of one end of the inner cover opening, a protruding limiting block is provided inside the locking groove, and the limiting block fits and is connected inside the installation port to limit the rotation of the inner cover.

8. The device for detecting air carbon dioxide concentration for carbon neutralization according to claim 1, characterized in that: A rotating ring is provided on the outer side of the opening at the end of the outer cover, a plurality of elastic positioning pieces are evenly arranged on the inner side of the rotating ring, and a rebound groove is provided between the elastic positioning piece and the rotating ring; Wherein, the inner side of the elastic positioning piece and the outer side of the limiting block are interference fit; The number of the elastic positioning pieces is the same as that of the magnetic connecting parts, and the number is at least two.

9. The device for detecting air carbon dioxide concentration for carbon neutralization according to claim 1, characterized in that: The other end of the outer cover is provided with a positioning cover, the inner side of the positioning cover is provided with a rotation positioning groove, and the other end of the inner cover is rotatably inserted in the rotation positioning groove.

10. The device for detecting air carbon dioxide concentration for carbon neutralization according to claim 1, characterized in that: Magnetic strips are slidably inserted on both sides of the outer cover; The cross section of the magnetic strip is triangular, a limit clamping strip for sliding engagement is provided on one side of the magnetic strip adjacent to the outer cover, a magnetic end is provided on the side of the magnetic strip away from the outer cover, and a plurality of rewinding grooves are provided on the outer side of the magnetic strip.

Images