VOCs waste gas concentration detection device

Abstract

The utility model relates to the technical field of waste gas concentration detection, in particular to a VOCs waste gas concentration detection device which comprises a detection box, a waste gas concentration detector body and a supporting cylinder, an adjusting supporting mechanism is arranged in the supporting cylinder, and an auxiliary detection mechanism is arranged in the detection box. When the VOCs waste gas concentration detection device is used, through the design that a limiting fan is reversely installed and the limiting fan is driven to rotate through mechanism transmission, when the limiting fan rotates, waste gas can be automatically pumped into the device for detection in a negative pressure pumping mode, and the VOCs waste gas concentration detection device is convenient to use. Further, impurity particles in the waste gas are isolated and filtered through a protective filter screen, so that the device can automatically filter and isolate solid impurity particles in the waste gas, and impurities are prevented from entering the detection device to block the device and influence the normal detection result of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas concentration detection, and particularly relates to a VOCs waste gas concentration detection device. Background Art

[0002] VOCs (volatile organic compounds) waste gas refers to waste gas containing volatile organic compounds. These organic compounds can volatilize into the atmosphere in the environment and cause harm to human health and the environment. Common VOCs include benzene, formaldehyde, chloroform, etc. Therefore, controlling and treating VOCs waste gas is very important for reducing air pollution and protecting the environment. A VOCs waste gas concentration detection device is a device used to detect the concentration of VOCs waste gas in the air;

[0003] An "organic waste gas concentration detection device" disclosed in the patent number "CN213658697U" can synchronously rotate two fixed shafts through a driving motor, thereby adjusting the height of the detection device, facilitating the detection of waste gas at different heights, making the detection result more accurate and convenient to use; since there are usually solid impurity particles in the waste gas when the device extracts waste gas for detection, once a large amount of solid impurities accumulate in the device, it will affect the accuracy of the normal sampling detection result of the waste gas. However, the above device does not make improvements to this problem, and the overall practical effect is somewhat poor. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a VOCs waste gas concentration detection device to solve the above problems, improving the problem that when the existing VOCs waste gas concentration detection device extracts waste gas for detection, there are usually solid impurity particles in the waste gas, and once a large amount of solid impurities accumulate in the device, it will affect the accuracy of the normal sampling detection result of the waste gas.

[0005] A VOCs waste gas concentration detection device, comprising a detection box, a waste gas concentration detector body and a support cylinder: an exhaust gas concentration detector body is provided on the inner wall of the side of the detection box, a support cylinder is provided below the detection box, an adjustment support mechanism is provided inside the support cylinder, an auxiliary detection mechanism is provided inside the detection box, and a portable cleaning mechanism is provided on the side of the auxiliary detection mechanism. The adjustment support mechanism includes a support bottom plate, a limit T-shaped block, a limit T-shaped groove, a support rod, a first threaded groove, a second threaded groove and a positioning bolt. A support bottom plate is slidably installed inside the support cylinder. Limit T-shaped blocks are symmetrically provided on the outer wall of the side of the support bottom plate. Limit T-shaped grooves are symmetrically opened on the inner wall of the side of the support cylinder. The limit T-shaped block and the limit T-shaped groove are slidably installed. A support rod is provided on the outer wall of the top end of the support bottom plate. The extended end of the support rod is above the support cylinder, and the outer wall of the top end of the support rod is connected to the outer wall of the bottom end of the detection box. A first threaded groove is opened through the outer wall of the side of the support rod at the bottom end position. The second threaded grooves are equidistantly opened on the outer wall of the side of the support cylinder. The first threaded groove and the second threaded groove are threadedly installed with the positioning bolt.

[0006] Preferably, the opening diameter of the first threaded groove is equal to the opening diameter of the second threaded groove.

[0007] Preferably, the auxiliary detection mechanism includes a micro motor, a protective cover and a control shaft. A micro motor is provided on the outer wall of the top end of the detection box. A protective cover is provided outside the micro motor. The outer wall of the bottom end of the protective cover is connected to the outer wall of the top end of the detection box. The micro motor is connected to the outer wall of the top end of the control shaft.

[0008] Preferably, the outer wall of the bottom end of the control shaft penetrates through the outer wall of the top end of the detection box and is connected to a driving bevel gear. A driven bevel gear is meshed and installed at the bottom end of the driving bevel gear.

[0009] Preferably, a support cover is provided outside the driving bevel gear and the driven bevel gear. Support blocks are symmetrically provided on the outer wall of the bottom end of the support cover, and the support blocks are connected to the inner wall of the bottom end of the detection box. The driven bevel gear is provided on the outside of a transmission shaft.

[0010] Preferably, one end of the transmission shaft is rotatably installed on the inner wall of the side of the support cover, and the other end of the transmission shaft is connected to a limit fan. The limit fan is provided outside the support cover.

[0011] Preferably, the portable cleaning mechanism includes a protective filter screen and a limit scraper. A placement groove is opened through the outer wall of the side of the detection box at the position of the limit fan, and a protective filter screen is installed inside the placement groove. A limit scraper is attached to the outer wall of the side of the protective filter screen.

[0012] Preferably, the limiting scraper is connected to one end of the limiting shaft, and the other end of the limiting shaft penetrates through the protective filter screen and is connected to the axial center position of the limiting fan.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. When the VOCs waste gas concentration detection device is in use, through the design of reversely installing the limiting fan and driving the limiting fan to rotate through mechanism transmission, when the limiting fan rotates, the waste gas will be automatically sucked into the device for detection by means of negative pressure extraction, thereby greatly accelerating the detection speed of the waste gas. Further, the impurities and particles in the waste gas are isolated and filtered through the protective filter screen, so that the device can automatically filter and isolate the solid impurity particles in the waste gas, thus avoiding the impurities from entering the detection device and blocking the device, which affects its normal detection results. At the same time, combined with the above-mentioned design that the rotation of the limiting fan drives the limiting scraper to clean the outside of the protective filter screen, the protective filter screen will not be blocked by impurities and affect its normal use while normally filtering impurities. The overall structure is ingeniously designed and has good practical effects;

[0015] 2. When the VOCs waste gas concentration detection device is in use, due to the uncertainty of the VOCs waste gas concentration detection position, once it is necessary to detect the VOCs waste gas at a relatively high position, the existing devices are relatively limited. Therefore, through the settings of the support base plate, limiting T-shaped block, limiting T-shaped groove, support rod, first threaded groove, second threaded groove and positioning bolt, the device is designed to be adjustable in support height. Then, the user can adjust the device to a suitable support height according to the height of the VOCs waste gas to be detected, so as to detect the concentration of VOCs waste gas at different height positions, further realizing the effect of multi-position detection. The overall flexibility is good and the practical effect is excellent. Description of the Drawings

[0016] Figure 1 is the overall three-dimensional structure schematic diagram of the present utility model;

[0017] Figure 2 is the overall sectional three-dimensional structure schematic diagram of the present utility model;

[0018] Figure 3 is the three-dimensional structure schematic diagram of the adjustment support mechanism of the present utility model;

[0019] Figure 4 is the three-dimensional structure schematic diagram of the auxiliary detection mechanism of the present utility model;

[0020] Figure 5 is the three-dimensional structure schematic diagram of the portable cleaning mechanism of the present utility model.

[0021] In the figure: 1, detection box; 2, main body of exhaust gas concentration detector; 3, support cylinder; 4, adjusting support mechanism; 41, support bottom plate; 42, limiting T-shaped block; 43, limiting T-shaped groove; 44, support rod; 45, first thread groove; 46, second thread groove; 47, positioning bolt; 5, auxiliary detection mechanism; 51, micro motor; 52, protective cover; 53, control shaft; 54, driving bevel gear; 55, driven bevel gear; 56, support cover; 57, transmission shaft; 58, limiting fan; 6, portable cleaning mechanism; 61, protective filter screen; 62, limiting scraper; 63, limiting shaft. Detailed implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0023] During specific implementation: As Figures 1-5As shown in the figure, a VOCs waste gas concentration detection device includes a detection box 1, a waste gas concentration detector body 2, and a support cylinder 3: The waste gas concentration detector body 2 is provided on the inner wall of the side of the detection box 1, the support cylinder 3 is provided below the detection box 1, an adjustment support mechanism 4 is provided inside the support cylinder 3, an auxiliary detection mechanism 5 is provided inside the detection box 1, and a portable cleaning mechanism 6 is provided on the side of the auxiliary detection mechanism 5. The adjustment support mechanism 4 includes a support bottom plate 41, a limit T-shaped block 42, a limit T-shaped groove 43, a support rod 44, a first thread groove 45, a second thread groove 46, and a positioning bolt 47. The support bottom plate 41 is slidably installed inside the support cylinder 3. The limit T-shaped blocks 42 are symmetrically provided on the outer wall of the side of the support bottom plate 41. The limit T-shaped grooves 43 are symmetrically opened on the inner wall of the side of the support cylinder 3. The limit T-shaped blocks 42 and the limit T-shaped grooves 43 are slidably installed. The support rod 44 is provided on the outer wall of the top of the support bottom plate 41. The extended end of the support rod 44 is above the support cylinder 3, and the outer wall of the top of the support rod 44 is connected to the outer wall of the bottom of the detection box 1. The first thread groove 45 is penetrated and opened on the outer wall of the side of the support rod 44 at the bottom position. The second thread grooves 46 are equally spaced on the outer wall of the side of the support cylinder 3. The first thread groove 45 and the second thread groove 46 are threadedly installed with the positioning bolt 47. When it is necessary to adjust the support of the device according to the actual height required for detecting VOCs waste gas, first, the positioning bolt 47 needs to be screwed out from the inside of the second thread groove 46. Then, the support rod 44 changes from the locked state to the movable state. Then, hold the support cylinder 3 and directly pull up the support rod 44 to the appropriate support height. When the support rod 44 moves, it will automatically drive the support bottom plate 41 to slide inside the support cylinder 3. At this time, when the support bottom plate 41 moves, it will synchronously drive the limit T-shaped block 42 to slide inside the limit T-shaped groove 43. At the same time, the setting of the limit T-shaped block 42 and the limit T-shaped groove 43 plays a role in limiting and supporting the movement of the support bottom plate 41. Then, the positioning bolt 47 is passed through the corresponding second thread groove 46 and screwed into the inside of the first thread groove 45 to complete the locking installation of the support rod 44.

[0024] The opening diameter of the first thread groove 45 is equal to the opening diameter of the second thread groove 46. Here, the first thread groove 45 and the second thread groove 46 are set to have the same opening diameter, which is convenient for the positioning bolt 47 to pass through the first thread groove 45 and the second thread groove 46 at one time.

[0025] The auxiliary detection mechanism 5 includes a micro motor 51, a protective cover 52, and a control shaft 53. The outer wall of the top end of the detection box 1 is provided with the micro motor 51. The outside of the micro motor 51 is provided with the protective cover 52. The outer wall of the bottom end of the protective cover 52 is connected to the outer wall of the top end of the detection box 1. The micro motor 51 is connected to the outer wall of the top end of the control shaft 53. The outer wall of the bottom end of the control shaft 53 penetrates through the outer wall of the top end of the detection box 1 and is connected to a driving bevel gear 54. A driven bevel gear 55 is meshed and installed at the bottom end of the driving bevel gear 54. The outside of the driving bevel gear 54 and the driven bevel gear 55 is provided with a support cover 56. The outer wall of the bottom end of the support cover 56 is symmetrically provided with support blocks, and the support blocks are connected to the inner wall of the bottom end of the detection box 1. The driven bevel gear 55 is arranged on the outside of a transmission shaft 57. One end of the transmission shaft 57 is rotatably installed on the inner wall of the side of the support cover 56. The other end of the transmission shaft 57 is connected to a limit fan 58. The limit fan 58 is arranged outside the support cover 56; when it is necessary to pump the external waste gas into the detection box 1 for the waste gas concentration detector body 2 to detect it, first, the micro motor 51 needs to be started. Here, the setting of the protective cover 52 plays a role in protecting and supporting the micro motor 51. When the micro motor 51 is started, it will automatically drive the control shaft 53 to rotate and then drive the driving bevel gear 54 to rotate. Subsequently, when the driving bevel gear 54 rotates, it will automatically drive the driven bevel gear 55 to rotate and then drive the transmission shaft 57 to rotate. When the transmission shaft 57 rotates, it will automatically drive the limit fan 58 to rotate. It should be noted here that the limit fan 58 is set to be installed in the reverse direction. When the limit fan 58 rotates, it will pump the external waste gas into the detection box 1 by means of negative pressure extraction. Subsequently, the waste gas concentration detector body 2 will automatically use the sensor to detect the concentration of specific gases in the air and convert the detection result into an electrical signal for output.

[0026] The portable cleaning mechanism 6 includes a protective filter screen 61 and a limit scraper 62. A placement groove is penetrated and opened on the outer wall of the side of the detection box 1 at the position of the limit fan 58, and the protective filter screen 61 is installed inside the placement groove. The limit scraper 62 is attached to the outer wall of the side of the protective filter screen 61. The limit scraper 62 is connected to one end of a limit shaft 63. The other end of the limit shaft 63 penetrates through the protective filter screen 61 and is connected to the axial center position of the limit fan 58; when the above-mentioned limit fan 58 pumps the external waste gas into the device during the rotation operation process, at this time, due to the setting of the protective filter screen 61, the solid impurity particles in the waste gas and the impurities in the air will be automatically isolated outside the protective filter screen 61. At the same time, as the limit fan 58 rotates, it will also drive the limit shaft 63 to rotate synchronously and then drive the limit scraper 62 to rotate. As the limit scraper 62 moves along its rotation trajectory, it will automatically clean the impurities accumulated outside the protective filter screen 61.

[0027] When the utility model is in use and it is necessary to support and adjust the device according to the actual height required for detecting VOCs waste gas, first, the positioning bolt 47 needs to be screwed out from the inside of the second thread groove 46. Then, the support rod 44 changes from the locked state to the movable state. Subsequently, hold the support cylinder 3 and directly pull the support rod 44 upward to the appropriate support height. When the support rod 44 moves, it will automatically drive the support bottom plate 41 to slide inside the support cylinder 3. At this time, the movement of the support bottom plate 41 will synchronously drive the limit T-shaped block 42 to slide inside the limit T-shaped groove 43. At the same time, the setting of the limit T-shaped block 42 and the limit T-shaped groove 43 plays a role in limiting and supporting the movement of the support bottom plate 41. Then, pass the positioning bolt 47 through the corresponding second thread groove 46 and screw it into the first thread groove 45 to complete the locking installation of the support rod 44. When it is necessary to pump the external waste gas into the detection box 1 for the waste gas concentration detector body 2 to detect it, first, the micro motor 51 needs to be started. Here, the setting of the protective cover 52 plays a role in protecting and supporting the micro motor 51. When the micro motor 51 is started, it will automatically drive the control shaft 53 to rotate, and then drive the driving bevel gear 54 to rotate. Subsequently, the rotation of the driving bevel gear 54 will automatically drive the driven bevel gear 55 to rotate, and then drive the transmission shaft 57 to rotate. When the transmission shaft 57 rotates, it will automatically drive the limit fan 58 to rotate. It should be noted here that the limit fan 58 is set to be installed in the reverse direction. When the limit fan 58 rotates, it will pump the external waste gas into the detection box 1 by means of negative pressure extraction. Subsequently, the waste gas concentration detector body 2 will automatically use the sensor to detect the concentration of specific gases in the air and convert the detection result into an electrical signal for output. When the above-mentioned limit fan 58 pumps the external waste gas into the device during the rotation operation, due to the setting of the protective filter screen 61, the solid impurity particles in the waste gas and the impurities in the air will be automatically isolated outside the protective filter screen 61. At the same time, as the limit fan 58 rotates, it will also synchronously drive the limit shaft 63 to rotate, and then drive the limit scraper 62 to rotate. As the limit scraper 62 moves along its rotation trajectory, it will automatically clean the impurities accumulated outside the protective filter screen 61.

[0028] It should be noted here that the micro motor 51 can be powered by existing technologies. Whether it is powered by a power supply component or an external wire, it belongs to the existing conventional operation technical means and will not be described in detail here.

[0029] In addition, it should be understood that although this specification is described according to the embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A VOCs waste gas concentration detection device, characterized in that: The invention comprises a detection box (1), an exhaust gas concentration detector body (2) and a support tube (3): the exhaust gas concentration detector body (2) is arranged on the inner wall of the side of the detection box (1), the support tube (3) is arranged below the detection box (1), an adjustment support mechanism (4) is arranged inside the support tube (3), an auxiliary detection mechanism (5) is arranged inside the detection box (1), a portable cleaning mechanism (6) is arranged on the side of the auxiliary detection mechanism (5), the adjustment support mechanism (4) comprises a support bottom plate (41), a limiting T-shaped block (42), a limiting T-shaped groove (43), a support rod (44), a first thread groove (45), a second thread groove (46) and a positioning bolt (47), a support bottom plate (41) is slidably installed inside the support tube (3), and the support bottom The side outer wall of the plate (41) is symmetrically provided with a limiting T-shaped block (42), and the side inner wall of the support tube (3) is symmetrically provided with a limiting T-shaped groove (43), and the limiting T-shaped block (42) and the limiting T-shaped groove (43) are slidably installed. The top outer wall of the support base plate (41) is provided with a support rod (44), and the protruding end of the support rod (44) is arranged above the support tube (3), and the top outer wall of the support rod (44) is connected to the bottom outer wall of the detection box (1), and the side outer wall of the support rod (44) at the bottom position is provided with a first thread groove (45) through it, and the side outer wall of the support tube (3) is provided with a second thread groove (46) at equal intervals, and the first thread groove (45) and the second thread groove (46) are threadedly installed with the positioning bolt (47).

2. A VOCs waste gas concentration detection device according to claim 1, characterized in that: The opening diameter of the first thread groove (45) is equal to the opening diameter of the second thread groove (46).

3. A VOCs waste gas concentration detection device according to claim 1, characterized in that: The auxiliary detection mechanism (5) comprises a micro motor (51), a protective cover (52) and a control shaft (53); the micro motor (51) is arranged on the top outer wall of the detection box (1); the protective cover (52) is arranged outside the micro motor (51); the bottom outer wall of the protective cover (52) is connected to the top outer wall of the detection box (1); and the micro motor (51) is connected to the top outer wall of the control shaft (53).

4. A VOCs waste gas concentration detection device according to claim 3, characterized in that: The outer wall of the bottom end of the control shaft (53) passes through the outer wall of the top end of the detection box (1) and is connected to the driving bevel gear (54), and the bottom end of the driving bevel gear (54) is meshed with a driven bevel gear (55).

5. A VOCs waste gas concentration detection device according to claim 4, characterized in that: A support cover (56) is arranged outside the driving bevel gear (54) and the driven bevel gear (55), and a support block is symmetrically arranged on the outer wall of the bottom end of the support cover (56), and the support block is connected to the inner wall of the bottom end of the detection box (1), and the driven bevel gear (55) is arranged outside the transmission shaft (57).

6. A VOCs waste gas concentration detection device according to claim 5, characterized in that: One end of the transmission shaft (57) is rotatably mounted on the inner wall of the side of the support cover (56), and the other end of the transmission shaft (57) is connected to a limit fan (58), and the limit fan (58) is arranged outside the support cover (56).

7. A VOCs waste gas concentration detection device according to claim 1, characterized in that: The portable cleaning mechanism (6) comprises a protective filter (61) and a limiting scraper (62); a placement groove is provided through the side outer wall of the detection box (1) at the position of the limiting fan (58), and the protective filter (61) is installed inside the placement groove; the limiting scraper (62) is provided in close contact with the side outer wall of the protective filter (61).

8. A VOCs waste gas concentration detection device according to claim 7, characterized in that: The limiting scraper (62) is connected to one end of the limiting shaft (63), and the other end of the limiting shaft (63) passes through the protective filter (61) and is connected to the axial center position of the limiting fan (58).

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