Portable VOCs gas detector

Abstract

The utility model relates to the technical field of gas detection, in particular to a portable VOCs gas detector, which comprises a detection body and a protective cover, a gas inlet pipe and a protective pipe are arranged at the top of the detection body, the protective pipe is sleeved outside the gas inlet pipe, a placing ring groove is arranged on the detection body at a position corresponding to the protective pipe, the protective pipe is detachably and completely arranged in the placing ring groove, and the protective cover is arranged in the placing ring groove. Or the air inlet pipe is lifted to be higher than the air inlet pipe and is detachably connected into the placing ring groove; the upper part of the detection body is provided with a clamping device, the protective cover covers the upper part of the detection body, and two sides of the protective cover are connected with the clamping device. The protection pipe is detachably arranged in the placement ring groove, when the protection pipe is not needed (when gas is directly detected but muck is not detected), the protection pipe is placed in the placement ring groove, and when VOCs detection needs to be carried out on the muck, the protection pipe is lifted and fixed in the placement ring groove for detection, so that direct pollution caused by direct contact between the gas inlet pipe and the muck is avoided, and the detection efficiency is improved. Use is convenient and flexible, and the service life of the detection body can be prolonged.

Description

Technical Field

[0001] This utility model relates to the field of gas detection technology, specifically to a portable VOCs gas detector. Background Technology

[0002] VOCs (volatile organic compounds) refer to organic compounds that have high saturated vapor pressure, low boiling point, and small molecular weight under standard conditions, and are easily volatilized at room temperature. These substances are among the major air pollutants. Most VOCs are toxic, irritating, teratogenic, and carcinogenic, especially benzene, toluene, and formaldehyde, which can cause significant harm to human health. Furthermore, VOCs are important precursors to urban haze and photochemical smog, participate in the formation of ozone and secondary aerosols in the atmosphere, and have a significant impact on regional ozone pollution and PM2.5 pollution.

[0003] VOCs detection generally includes direct detection of conventional gases. With rapid social development, the construction of high-rise buildings and road paving has led to the generation of a large amount of construction waste. During transportation in cities, construction waste is prone to dust pollution due to inadequate covering, which can affect human health and the environment. Therefore, the detection of construction waste is essential, including VOCs detection. For VOCs detection of construction waste, it is necessary to avoid direct contact between the air inlet and the construction waste to prevent direct contamination of the detector and the air inlet. Furthermore, the detector needs to be protected when not in use.

[0004] This utility model provides a portable VOCs gas detector that can directly detect conventional gases as well as VOCs in construction waste. It is convenient and flexible to use and provides good protection for the detector body. Utility Model Content

[0005] This invention provides a portable VOCs gas detector that can directly detect both conventional gases and VOCs in construction waste, offering convenient and flexible use while providing good protection for the detector itself.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a portable VOCs gas detector is provided, the innovation of which is: it includes a detection body and a protective cover. The top of the detection body is provided with an air inlet pipe and a protective pipe. The height of the protective pipe is higher than that of the air inlet pipe. The protective pipe is sleeved outside the air inlet pipe. The detection body is provided with a placement ring groove corresponding to the position of the protective pipe. The protective pipe can be detachably and completely placed in the placement ring groove, or raised to be higher than the air inlet pipe and detachably connected to the placement ring groove. The upper part of the detection body is symmetrically provided with snap-fit ​​devices on both sides. The protective cover is adapted to the upper part of the detection body. The protective cover covers the upper part of the detection body, and the two sides and the snap-fit ​​devices are detachably connected.

[0007] Furthermore, the protective tube is provided with two sets of connectors, each set of connectors including two connecting blocks symmetrically arranged on the side of the protective tube. One set of connectors is located at the bottom of the side of the protective tube, and the other set of connectors is located at the top of the side of the protective tube. The connecting line of each set of connecting blocks is perpendicular to the connecting line of the other set of connecting blocks. The outer side of the placement ring groove is provided with two symmetrical first connecting grooves and two symmetrical second connecting grooves. The connecting line of the two first connecting grooves is perpendicular to the connecting line of the two second connecting grooves. Both the first connecting grooves and the second connecting grooves are connected to the placement ring groove. The first connecting grooves are provided corresponding to the two connecting blocks at the top of the side of the protective tube. The second connecting grooves extend downward to near the bottom of the placement ring groove, corresponding to the two connecting blocks at the bottom of the side of the protective tube.

[0008] Furthermore, the bottom of the first connecting groove and the bottom of the second connecting groove both extend into a slot along the same direction of the circumference, that is, the first connecting groove, the second connecting groove, and the corresponding slot form an L-shape, and a fixing device is provided in the slot.

[0009] Furthermore, the fixing device includes a spring column and a clamping column. The top end of the spring column is connected to the center of the top of the slot, and the top end of the clamping column is connected to the bottom end of the spring column. After the connecting block is inserted into the slot, it is placed at the bottom end of the clamping column.

[0010] Furthermore, the bottom end of the clamping column is curved, and the connecting block is provided with a clamping groove corresponding to the position of the clamping column.

[0011] Furthermore, when the protective tube is raised above the air inlet pipe and detachably connected to the placement ring groove, a dustproof mesh is detachably connected to the top of the protective tube.

[0012] Furthermore, the outer diameter of the dustproof mesh is the same as that of the protective pipe, and the side of the dustproof mesh is provided with two elastic ring bands corresponding to the two connecting blocks on the upper part of the protective pipe. The dustproof mesh is tightly fastened to the corresponding connecting blocks by the elastic ring bands and connected to the upper end face of the protective pipe.

[0013] Furthermore, the protective cover is provided with inverted L-shaped latches on both sides, and the latching device is set at the corresponding latch position. The latching device includes a fixing strip, a spring column, and a latching rod. The fixing strip is located at the rear end of the side of the detection body. One end of the spring column is fixed to the fixing strip, and the other end extends forward. One end of the latching rod is connected to the other end of the spring column, and the other end of the latching rod extends away from the detection body. The latching rod is latched in the horizontal part of the latch.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This utility model discloses a portable VOCs gas detector equipped with an inlet pipe and a protective pipe. The protective pipe is detachable and installed in a placement ring groove. When the protective pipe is not needed (when directly detecting gas without detecting slag), the protective pipe is placed in the placement ring groove. When VOCs detection of slag is required, the protective pipe is raised and fixed in the placement ring groove for detection, thus avoiding direct contact between the inlet pipe and the slag, which would cause direct pollution. It is convenient and flexible to use and can improve the service life of the detector body.

[0016] This utility model discloses a portable VOCs gas detector equipped with a protective cover and a snap-fit ​​device. When the detector is not in use, the snap-fit ​​device can be used to detachably protect the detector on the upper part of the detector body, thereby protecting the air inlet and preventing impurities from entering the detector body when it is not in use, which would affect its performance and lifespan. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a portable VOCs gas detector according to the present invention (without a protective cover).

[0019] Figure 2 For the present utility model Figure 1 Enlarged view of point A in the image.

[0020] Figure 3 This is a schematic diagram of the structure of the protective tube of this utility model, which is lifted and connected to the placement ring groove.

[0021] Figure 4 This is a schematic diagram of the structure of the present invention for preventing the annular groove from connecting the first connecting groove and the second connecting groove.

[0022] Figure 5 This is a cross-sectional view of the protective pipe of this utility model after it has been raised and is connected to the ring groove.

[0023] Figure 6 For the present utility model Figure 5 Enlarged view of point B in the image.

[0024] Figure 7 A cross-sectional view of the second connecting groove position after the protective pipe of this utility model is raised.

[0025] Figure 8 For the present utility model Figure 1 A schematic diagram of the structure covered by the protective cover.

[0026] The components include: 1. Detector body; 2. Protective cover; 3. Air inlet pipe; 4. Protective pipe; 5. Placement ring groove; 6. Clip-on device; 61. Fixing strip; 62. Elastic column; 63. Clip rod; 7. Connecting block; 8. First connecting groove; 9. Second connecting groove; 10. Clip groove; 11. Fixing device; 111. Spring column; 112. Tightening column; 113. Tightening curved groove; 12. Dustproof mesh tray; 13. Elastic ring belt; 14. Clamping opening. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] The directional terms "front", "back", "up", and "down" used in this utility model are only used to describe the accompanying drawings and are not intended to limit the actual use of the device. In actual use, the orientation of the device shall be determined by the actual usage.

[0029] Example 1

[0030] This embodiment provides a portable VOCs gas detector, such as Figure 1 As shown, the device includes a detection body 1 and a protective cover 2. The top of the detection body 1 is provided with an air inlet pipe 3 and a protective pipe 4. The height of the protective pipe 4 is higher than that of the air inlet pipe 3. The protective pipe 4 is sleeved outside the air inlet pipe 3. The detection body 1 is provided with a placement ring groove 5 corresponding to the position of the protective pipe 4. The protective pipe 4 can be detachably and completely placed in the placement ring groove 5, or raised to be higher than the air inlet pipe 3 and detachably connected in the placement ring groove 5. The upper part of the detection body 1 is symmetrically provided with snap-fit ​​devices 6. The protective cover 2 is adapted to the upper part of the detection body 1. The protective cover 2 covers the upper part of the detection body 1, and the two sides and the snap-fit ​​devices 6 are detachably connected.

[0031] This embodiment includes an air inlet pipe 3 and a protective pipe 4. The protective pipe 4 is detachably installed in the placement ring groove 5. When the protective pipe 4 is not needed (when directly detecting gas without detecting slag), the protective pipe 4 is placed in the placement ring groove 5, and air is introduced through the air inlet pipe 3 for detection. When VOCs detection of slag is required, the protective pipe 4 is raised and fixed in the placement ring groove 5 for detection, avoiding direct contact between the air inlet pipe 3 and slag to prevent direct pollution. It is convenient and flexible to use and can improve the service life of the detection body 1.

[0032] This embodiment is equipped with a protective cover 2 and a snap-fit ​​device 6. When the detector is not in use, the detector can be detachably protected on the upper part of the detector body 1 by the snap-fit ​​device 6, that is, the air inlet pipe 3 is protected to prevent impurities from entering the detector body 1 when it is not in use, which would affect its quality of use and lifespan.

[0033] Example 2

[0034] Based on the above embodiments, the protective pipe 4 in this embodiment is provided with two sets of connectors. Each set of connectors includes two connecting blocks 7 symmetrically arranged on the side of the protective pipe 4. One set of connectors is located at the bottom of the side of the protective pipe 4, and the other set of connectors is located at the top of the side of the protective pipe 4. The lines connecting the connecting blocks 7 of each set are perpendicular to the lines connecting the connecting blocks 7 of the other set. Figure 2-7 As shown, the outer side of the placement ring groove 5 is provided with two symmetrical first connecting grooves 8 and two symmetrical second connecting grooves 9. The line connecting the two first connecting grooves 8 and the line connecting the two second connecting grooves 9 are perpendicular to each other. The first connecting grooves 8 and the second connecting grooves 9 are both connected to the placement ring groove 5. The first connecting grooves 8 are provided with two connecting blocks 7 at the top of the side of the protective tube 4. The second connecting grooves 9 extend downward to near the bottom of the placement ring groove 5, corresponding to the two connecting blocks 7 at the bottom of the side of the protective tube 4.

[0035] In this embodiment, when not in use, the protective tube 4 is placed in the annular groove, with the two upper connecting blocks 7 placed in the first connecting groove 8 and the two lower connecting blocks 7 placed in the second connecting groove 9 to limit the movement of the protective tube 4. Secondly, when using the protective tube 4, it is moved upwards, so that the two lower connecting blocks 7 are placed in the corresponding two first connecting grooves 8 to limit its movement.

[0036] Example 3

[0037] Based on the above embodiments, in order to strengthen the connection of the protective tube 4, the bottom of the first connecting groove 8 and the bottom of the second connecting groove 9 in this embodiment both extend into the same direction along the circumference, that is, the first connecting groove 8 and the second connecting groove 9 and the corresponding slot 10 form an L shape, and a fixing device 11 is provided in the slot 10.

[0038] In this embodiment, the same direction along the circumference refers to a clockwise or counterclockwise direction based on the first connecting groove 8 and the second connecting groove 9. Based on Embodiment 2, without using the protective tube 4, after placing the two upper connecting blocks 7 and the two lower connecting blocks 7 into their respective first connecting grooves 8 and second connecting grooves 9, the protective tube 4 is rotated so that the connecting blocks 7 are respectively moved into their respective slots 10 for further positioning. When using the protective tube 4, after placing the two lower connecting blocks 7 into their respective first connecting grooves 8, the protective tube 4 is rotated so that the lower connecting blocks 7 are respectively moved into their respective slots 10 for positioning.

[0039] Example 4

[0040] Based on the above embodiments, in order to further fix the protective tube 4, the fixing device 11 of this embodiment includes a spring column 111 and a clamping column 112. The top end of the spring column 111 is connected to the top center of the slot 10, and the top end of the clamping column 112 is connected to the bottom end of the spring column 111. After the connecting block 7 is inserted into the slot 10, it is placed at the bottom end of the clamping column 112.

[0041] In this embodiment, the elastic force of the spring post 111 is such that, without external force, the distance between the pressing post 112 and the bottom surface of the slot 10 is less than the thickness of the corresponding position of the connecting block 7. Based on embodiment 3, in this embodiment, when the connecting block 7 is inserted into the slot 10 with or without the protective tube 4, it rotates inward from the bottom surface of the slot 10, squeezing the spring post 111 upward. When the connecting block 7 is completely inserted into the slot 10, the elastic force of the spring post 111 causes the pressing post 112 to press the connecting block 7 downward, thus fixing it.

[0042] Example 5

[0043] Based on the above embodiments, in order to ensure the stable connection between the clamping column 112 and the connecting block 7, the bottom end of the clamping column 112 in this embodiment is curved, such as... Figure 6 As shown, the connecting block 7 is provided with a tightening groove 113 at the position corresponding to the tightening column 112.

[0044] In this embodiment, the clamping post 112 is clamped into the clamping groove of the connecting block 7, thereby improving the stability of fixing the connecting block 7.

[0045] Example 6

[0046] Based on the above embodiments, in order to prevent dust and impurities when testing slag and soil, when the protective pipe 4 of this embodiment is raised above the air inlet pipe 3 and detachably connected to the placement ring groove 5, a dustproof mesh 12 is detachably connected to the top of the protective pipe 4.

[0047] The dustproof screen prevents dust from entering the detection body 1 through the air inlet pipe 3, thus preventing damage to the equipment and reducing its service life.

[0048] Example 7

[0049] Based on the above embodiments, in order to fix the dustproof net, the outer diameter of the dustproof net tray 12 and the outer diameter of the protective tube 4 are the same. The side of the dustproof net tray 12 is provided with two elastic ring bands 13 corresponding to the two connecting blocks 7 on the upper part of the protective tube 4. The dustproof net tray 12 is tightly clamped to the corresponding connecting blocks 7 by the elastic ring bands 13 and connected to the upper end surface of the protective tube 4.

[0050] In this embodiment, the elastic band 13 has an elasticity such that, when no external force is applied and the dustproof mesh tray 12 is placed on the upper surface of the protective tube 4, the length of the elastic band 13 does not reach the two connecting blocks 7 at the upper part of the protective tube 4. In this embodiment, the elastic band is secured to the corresponding connecting blocks 7 by external force, causing the dustproof mesh tray 12 to adhere tightly to the dustproof tube. This provides dust protection while also facilitating easy assembly and disassembly, making it convenient for replacing or maintaining the dustproof mesh.

[0051] Example 8

[0052] Based on the above embodiments, the protective cover 2 in this embodiment is provided with inverted L-shaped latches 14 on both sides, such as... Figure 8 As shown, because Figure 8 This is a 3D view, showing only the bayonet 14 on one side of the protective cover 2 and its connection structure with the locking device 6. The locking device 6 is positioned corresponding to the bayonet 14 and includes a fixing strip 61, a spring post 62, and a locking rod 63. The fixing strip 61 is located at the rear end of the side of the detection body 1. One end of the spring post 62 is fixed to the fixing strip 61, and the other end extends forward. One end of the locking rod 63 is connected to the other end of the spring post 62, and the other end of the locking rod 63 extends away from the detection body 1. The locking rod 63 is locked in the horizontal part of the bayonet 14.

[0053] In this embodiment, when the locking device 6 locks the protective cover 2, the locking rod 63 is first pulled forward to the vertical position of the corresponding locking slot 14. After the locking rod 63 of the protective cover 2 is moved downward to the horizontal position of the locking slot 14, the locking rod 63 is released. The elastic force of the elastic column 62 pulls the locking rod 63 backward at the horizontal position of the locking slot 14. That is, the protective cover 2 is locked and fixed by the backward elastic force of the elastic column 62. It is flexible to use and easy to disassemble and assemble.

[0054] The above-described embodiments are merely preferred embodiments of the present utility model and are not intended to limit the concept and scope of the present utility model. Without departing from the design concept of the present utility model, all modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope of the present utility model. The technical content for which protection is sought in the present utility model has been fully described in the technical requirements.

Claims

1. A portable VOCs gas detector, characterized in that: The device includes a detection body and a protective cover. The top of the detection body is provided with an air inlet pipe and a protective pipe. The height of the protective pipe is higher than that of the air inlet pipe, and the protective pipe is sleeved outside the air inlet pipe. The detection body has a placement annular groove corresponding to the position of the protective pipe. The protective pipe can be detachably and completely placed in the placement annular groove, or raised to be higher than the air inlet pipe and detachably connected to the placement annular groove. The upper part of the detection body is symmetrically provided with snap-fit ​​devices on both sides. The protective cover is adapted to the upper part of the detection body, covering the upper part of the detection body, and the two sides and the snap-fit ​​devices are detachably connected.

2. The portable VOCs gas detector according to claim 1, characterized in that: The protective tube is provided with two sets of connectors. Each set of connectors includes two symmetrically arranged connecting blocks on the side of the protective tube. One set of connectors is located at the bottom of the side of the protective tube, and the other set of connectors is located at the top of the side of the protective tube. The line connecting the connecting blocks of each set is perpendicular to the line connecting the connecting blocks of the other set. The outer side of the placement ring groove is provided with two symmetrical first connecting grooves and two symmetrical second connecting grooves. The line connecting the two first connecting grooves is perpendicular to the line connecting the two second connecting grooves. Both the first connecting grooves and the second connecting grooves are connected to the placement ring groove. The first connecting grooves are provided corresponding to the two connecting blocks at the top of the side of the protective tube. The second connecting grooves extend downward to near the bottom of the placement ring groove, corresponding to the two connecting blocks at the bottom of the side of the protective tube.

3. The portable VOCs gas detector according to claim 2, characterized in that: The bottom of the first connecting groove and the bottom of the second connecting groove both extend into a slot along the same direction of the circumference, that is, the first connecting groove, the second connecting groove and the corresponding slot form an L-shape, and a fixing device is provided in the slot.

4. The portable VOCs gas detector according to claim 3, characterized in that: The fixing device includes a spring column and a clamping column. The top of the spring column is connected to the center of the top of the slot, and the top of the clamping column is connected to the bottom of the spring column. After the connecting block is inserted into the slot, it is placed at the bottom of the clamping column.

5. The portable VOCs gas detector according to claim 4, characterized in that: The bottom end of the clamping column is curved, and the connecting block is provided with a clamping groove corresponding to the position of the clamping column.

6. The portable VOCs gas detector according to claim 2, characterized in that: When the protective tube is raised above the air inlet pipe and detachably connected to the placement ring groove, a dustproof mesh is detachably connected to the top of the protective tube.

7. The portable VOCs gas detector according to claim 6, characterized in that: The outer diameter of the dustproof mesh is the same as that of the protective pipe, and the side of the dustproof mesh is provided with two elastic rings corresponding to the two connecting blocks on the upper part of the protective pipe. The dustproof mesh is connected to the upper end face of the protective pipe by being tightly fastened to the corresponding connecting blocks by the elastic rings.

8. The portable VOCs gas detector according to claim 1, characterized in that: The protective cover has inverted L-shaped latches on both sides. The latching device is set at the corresponding latch position. The latching device includes a fixing strip, a spring column, and a latching rod. The fixing strip is located at the rear end of the side of the detection body. One end of the spring column is fixed to the fixing strip, and the other end extends forward. One end of the latching rod is connected to the other end of the spring column, and the other end of the latching rod extends away from the detection body. The latching rod is locked in the horizontal part of the latch.

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