An online odor detection and analysis instrument

Abstract

This utility model discloses an online odor detection and analysis instrument, including a housing and a backplate. The housing is divided into an upper analysis chamber and a lower sampling chamber, and also includes a sampling module, an analysis module, and a quick maintenance module. The sampling module includes a three-way valve with an air inlet pipe at one end, an analysis tube extending through a partition and into the upper chamber at the top, and a storage tube extending through the lower sampling chamber at the bottom, with an air bladder connected to the storage tube. The analysis module includes a housing, a multi-sensor array, and a main control board. The multi-sensor array is connected to the upper end of the analysis tube through a sealed interface. The quick maintenance module includes a pipe clamp located outside the three-way valve and module clamps symmetrically located on both sides of the analysis module. A snap-fit ​​seat is located at the back end of the housing, and a fixing device is detachably connected to the snap-fit ​​seat on the backplate. This utility model belongs to the field of gas analysis technology, specifically addressing the problems of inconvenient maintenance and sensor mid-end monitoring and gas leakage during maintenance in existing technologies.

Description

Technical Field

[0001] This utility model belongs to the field of gas analysis technology, specifically referring to an online odor detection and analysis instrument. Background Technology

[0002] Malodorous gases are volatile and soluble, have a wide range of pollution, and can harm the human respiratory, circulatory, endocrine, and nervous systems.

[0003] Existing odor detection equipment has several major drawbacks: 1. The exhaust pipe is prone to contamination and replacement requires disassembling the casing, making maintenance inconvenient.

[0004] 2. Furthermore, sensor maintenance requires complete system shutdown, interrupting continuous monitoring. During maintenance, traditional valve switching has dead zones, which can cause the escape of odorous gases. Utility Model Content

[0005] The technical problem to be solved by this utility model is the inconvenience of maintenance in the prior art, as well as the problems of mid-terminal monitoring and gas leakage during maintenance.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows: The present invention proposes an online odor detection and analysis instrument, including a housing and a back plate located on the outside of the housing, with mounting components on the back plate; the housing is a hollow cavity with an internal partition and a hinged door on the outside, the partition dividing the cavity into an upper analysis cavity and a lower sampling cavity distributed vertically, and an air inlet is provided on the side wall of the lower sampling cavity. It also includes a sampling module, an analysis module, and a rapid maintenance module; The sampling module includes a three-way valve located in the sampling chamber. An air inlet pipe is provided on one side of the three-way valve near the air inlet. An analysis tube is provided at the top of the three-way valve, penetrating the partition and extending to the upper chamber. A storage tube is provided at the bottom of the three-way valve, penetrating the sampling chamber. A detachable airbag is connected to the bottom of the outer side of the housing. The analysis module is located inside the upper analysis chamber and includes a housing, a multi-sensor array and a main control board located inside the housing. The multi-sensor array is connected to the upper end of the analysis tube through a sealed interface. The rapid maintenance module includes: The pipe clamping component located on the outside of the three-way valve includes an arc-shaped clamp fixed with a spring. The module clamping components, symmetrically arranged on both sides of the analysis module, include push rods for fixing the housing.

[0007] Preferably, the back end of the housing is provided with a buckle seat, and the back plate is provided with a fixing device that is detachably connected to the buckle seat. The back plate has a drive groove inside, and the fixing device includes a bidirectional screw that is horizontally rotatably disposed in the drive groove. The two sides of the bidirectional screw are provided with a first fixing block and a second fixing block that move relative to each other and match the buckle seat. When the first fixing block and the second fixing block move away from each other, they slide and lock into the buckle seats on both sides. When they move closer to each other, they disengage from the buckle seats. The fixing device also includes a drive assembly that drives the bidirectional screw to rotate.

[0008] Preferably, the drive assembly includes a motor, a worm gear, and a worm wheel. A rotating drive gear is provided on the outer side of the back plate. Driven gears meshing with the drive gear are provided on the upper and lower sides of the back plate. The motor is located in the drive groove and its output shaft is connected to the center of the drive gear. The worm gear is rotatably located in the drive groove and is coaxially arranged with the driven gear. A worm wheel meshing with the worm gear is provided at the center of the bidirectional screw. The first fixing block and the second fixing block are respectively threaded to both sides of the bidirectional screw, and the first fixing block and the second fixing block are arranged in an L-shape.

[0009] Preferably, the main control board uses a microcontroller 43, which integrates a Zigbee communication module / 4G communication module. The multi-sensor array includes an electrochemical sensor, a metal oxide semiconductor sensor, a photoionization detector, and a temperature and humidity compensation sensor connected to the microcontroller 43.

[0010] Preferably, the sampling chamber is equipped with a negative pressure pump for extracting gas.

[0011] Preferably, the air inlet is provided with a primary filter layer for filtering large particles.

[0012] Preferably, the bypass port of the three-way valve is equipped with a removable plug.

[0013] The beneficial effects of this utility model by adopting the above structure are as follows: 1. By configuring the analysis module and utilizing the combination of a multi-sensor array and the main control board, online analysis of odorous gases can be achieved.

[0014] 2. The quick maintenance module facilitates the testing of components such as the three-way valve and the analysis module. During maintenance, an airbag temporarily stores contaminated gas, and the bypass design ensures uninterrupted basic monitoring during maintenance.

[0015] 3. By sliding the first fixing block and the second fixing block in the fixing device with the buckle seat, the box can be easily installed and disassembled, making it convenient for testing and analysis. Attached Figure Description

[0016] Figure 1A schematic diagram of the external structure of an online odor detection and analysis instrument provided in this application; Figure 2 A schematic diagram of the internal structure of an online odor detection and analysis instrument provided in this application; Figure 3 This is a schematic diagram of the buckle seat in this application; Figure 4 This is a schematic diagram of the internal structure of the backplate drive slot in this application; Figure 5 A schematic diagram illustrating the composition of the driving components provided in this application; Figure 6 This is a cross-sectional view of the internal structure of this application; Figure 7 This is a schematic diagram illustrating the principle of the analysis module in this application.

[0017] Among them, 1. Box body, 2. Back panel, 3. Sampling module, 4. Analysis module, 5. Quick maintenance module, 6. Fixing device, 7. Negative pressure pump; 11. Partition; 12. Upper analysis chamber; 13. Lower sampling chamber; 14. Air inlet; 15. Snap-on seat; 16. Door body; 21. Drive slot; 22. Mounting component; 31. Three-way valve; 32. Inlet pipe; 33. Analysis tube; 34. Storage tube; 35. Airbag; 41. Housing; 42. Multi-sensor array; 43. Microcontroller; 401. Electrochemical sensor; 402. Metal oxide semiconductor sensor; 403. Photoionization detector; 404. Temperature and humidity compensation sensor. 51. Pipe clamp; 52. Spring; 53. Arc-shaped clamp; 54. Module clamp; 55. Push rod. 61. Bidirectional screw; 62. First fixing block; 63. Second fixing block; 64. Drive assembly; 601. Motor; 602. Worm; 603. Worm wheel; 604. Driving gear; 605. Driven gear.

[0018] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] In this application, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Example 1 like Figure 1 and Figure 2 As shown, the present invention proposes an online odor detection and analysis instrument, including a housing 1 and a back plate 2 located on the outside of the housing 1, with a mounting component 22 on the back plate 2; the housing 1 is a hollow cavity with an internal partition 11 and a hinged door 16 on the outside; the partition 11 divides the cavity into an upper analysis cavity 12 and a lower sampling cavity 13 distributed vertically; and the lower sampling cavity has an air inlet 14 on its side wall.

[0023] This application also includes sampling module 3, analysis module 4, and rapid maintenance module 5.

[0024] refer to Figure 2 As shown, the sampling module 3 includes a three-way valve 31 located in the sampling chamber 13. An air inlet pipe 32 is provided on one side of the three-way valve 31 near the air inlet 14. A negative pressure pump is provided in the sampling chamber 13 for extracting gas. An analysis tube 33 is provided at the top of the three-way valve 31, penetrating the partition 11 and extending to the upper cavity. A storage tube 34 is provided at the bottom of the three-way valve 31, penetrating the sampling chamber. A detachable airbag 35 is connected to the bottom of the housing 1. A detachable plug is provided at the bypass port of the three-way valve 31.

[0025] The air inlet 14 is equipped with a primary filter layer for filtering large particles.

[0026] The quick maintenance module 5 includes: a pipe clamp 51 located outside the three-way valve 31, which includes an arc-shaped clamp 53 fixed by a spring 52; and module clamps 54 symmetrically located on both sides of the analysis module 4, which include push rods 55 that fix the housing 41.

[0027] The arc-shaped clamp 53 has a fixing seat on its outer side, and the spring 52 is located between the arc-shaped clamp 53 and the fixing seat. The arc-shaped clamps 53 on both sides are used to fix the three-way valve 31. The push rod 55 can be electric or manual and is used to fix the housing 41 to maintain the stability of use. A battery for power supply is also provided on one side of the upper analysis chamber 12.

[0028] During use, the quick maintenance module 5 facilitates the inspection and maintenance of components such as the three-way valve 31 and the analysis module 4. When equipment maintenance is required, the plug is unscrewed, and the gas guide bladder 35 temporarily stores contaminated gas. Combined with the bypass design, this ensures uninterrupted basic monitoring during maintenance.

[0029] refer to Figure 2 and Figure 7 As shown, the analysis module 4 is located inside the upper analysis chamber 12, and includes a housing 41, a multi-sensor array 42, and a main control board disposed within the housing 41. The multi-sensor array 42 is connected to the upper end of the analysis tube 33 through a sealed interface. The main control board is a microcontroller 43, electrically connected to the negative pressure pump, and integrates a Zigbee communication module / 4G communication module. The multi-sensor array 42 includes an electrochemical sensor 401, a metal oxide semiconductor sensor 402, a photoionization detector 403, and a temperature and humidity compensation sensor 404, all connected to the microcontroller 43.

[0030] Preferably, the microcontroller 43 uses the STM32 series, the communication module uses a Quectel EC25 4G+TI CC2652RZigbee, the electrochemical sensor 401 uses an Alphasense H2S-B1, the metal oxide semiconductor sensor 402 uses a Figaro TGS2600, the photoionization detector 403 uses a RAE ppbRAE 3000, and the temperature and humidity compensation sensor 404 uses a Sensirion SCD40. This design solves the industry problem of complex odor gas composition and numerous interfering factors, and can be used for the detection of methanethiol, benzene series compounds, aldehydes, and ultra-low concentration odor gases. It should be noted that a display screen electrically connected to the microcontroller 43 can also be configured outside the housing 41 for on-site data display. Additionally, communication with the backend via the communication module enables online data transmission.

[0031] Example 2 refer to Figures 3-6 As shown, a structure for easy installation and disassembly of the housing 1 is provided, specifically including the following: The back end of the housing 1 is provided with a buckle seat 15, and the back plate 2 is provided with a fixing device 6 that is detachably connected to the buckle seat 15. The back plate 2 has a drive groove 21 inside. The fixing device 6 includes a bidirectional screw 61 that is horizontally rotatably disposed in the drive groove 21. The two sides of the bidirectional screw 61 are provided with a first fixing block 62 and a second fixing block 63 that move relative to each other and match the buckle seat 15. When the first fixing block 62 and the second fixing block 63 move away from each other, they slide and lock into the buckle seats 15 on both sides. When they move closer to each other, they disengage from the buckle seats 15. The fixing device 6 also includes a drive assembly 64 that drives the bidirectional screw 61 to rotate.

[0032] The drive assembly 64 includes a motor 601, a worm gear 602, and a worm wheel 603. A rotating drive gear 604 is provided on the outer side of the back plate 2. Driven gears 605 meshing with the drive gear 604 are provided on the upper and lower sides of the back plate 2. The motor 601 is located in the drive groove 21 and its output shaft is connected to the center of the drive gear 604. The worm gear 602 is rotatably located in the drive groove 21 and is coaxially arranged with the driven gear 605. A worm wheel 603 meshing with the worm gear 602 is provided at the center of the bidirectional screw 61. The first fixing block 62 and the second fixing block 63 are respectively threaded to the two sides of the bidirectional screw 61, and the first fixing block 62 and the second fixing block 63 are arranged in an L-shape.

[0033] In this structure, an external motor 601 is switched on. Turning on the motor 601 causes its output shaft to drive the drive gear 604 to rotate. The drive gear 604 meshes with the driven gear 605, which in turn drives the coaxial worm gear 602 to rotate. The worm gear 602 then meshes with the worm wheel 603, causing the bidirectional screw 61, coaxial with the worm wheel 603, to rotate. The first fixing block 62 and the second fixing block 63 move away from each other and slide within the latching seats 15 on both sides, achieving a sliding connection with the latching seats 15. Then, the motor 601 is stopped, thus securing the housing 1 to the back plate 2. When the housing 1 needs to be removed, the reverse switch of the motor 601 is turned on. The first fixing block 62 and the second fixing block 63 move closer together and disengage from the latching seats 15, making the housing 1 easy to install and remove, thus facilitating its use.

[0034] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An online odor detection and analysis instrument, comprising a housing (1) and a backplate (2) disposed on the outside of the housing (1), characterized in that, The housing (1) is a hollow cavity with a partition (11) inside. The partition (11) divides the cavity into an upper analysis cavity (12) and a lower sampling cavity (13) distributed vertically. The lower sampling cavity (13) has an air inlet (14) on its side wall. It also includes a sampling module (3), an analysis module (4) and a quick maintenance module (5). The sampling module (3) includes a three-way valve (31) located in the sampling chamber (13). An air inlet pipe (32) is provided on one side of the three-way valve (31) near the air inlet (14). An analysis tube (33) is provided at the top of the three-way valve (31) through the partition (11). The analysis tube (33) extends to the upper cavity. A storage tube (34) is provided at the bottom of the three-way valve (31) through the sampling chamber (13). A detachable airbag (35) is connected to the bottom of the box (1). The analysis module (4) is located in the upper analysis chamber (12), and includes a housing (41) and a multi-sensor array (42) and a main control board located in the housing (41). The multi-sensor array (42) is connected to the upper end of the analysis tube (33) through a sealed interface. The quick maintenance module (5) includes: a pipe clamp (51) located outside the three-way valve (31), which includes an arc-shaped clamp (53) fixed by a spring (52); and module clamps (54) symmetrically located on both sides of the analysis module (4), which include push rods (55) for fixing the housing (41).

2. The online odor detection and analysis instrument according to claim 1, characterized in that: The back end of the housing (1) is provided with a buckle seat (15). The back plate (2) is provided with a fixing device (6) that is detachably connected to the buckle seat (15). The back plate (2) is provided with a drive groove (21). The fixing device (6) includes a bidirectional screw (61) that is horizontally rotatably disposed in the drive groove (21). The two sides of the bidirectional screw (61) are provided with a first fixing block (62) and a second fixing block (63) that move relative to each other and match the buckle seat (15). When the first fixing block (62) and the second fixing block (63) move away from each other, they slide and are locked in the buckle seats (15) on both sides. When they move closer to each other, they disengage from the buckle seats (15). The fixing device (6) also includes a drive assembly (64) that drives the bidirectional screw (61) to rotate.

3. The online odor detection and analysis instrument according to claim 1, characterized in that: The main control board uses a microcontroller (43) and integrates a Zigbee communication module / 4G communication module. The multi-sensor array (42) includes an electrochemical sensor (401), a metal oxide semiconductor sensor (402), a photoionization detector (403), and a temperature and humidity compensation sensor (404) connected to the microcontroller (43).

4. The online odor detection and analysis instrument according to claim 2, characterized in that: The drive assembly (64) includes a motor (601), a worm (602) and a worm wheel (603). A rotating drive gear (604) is provided on the outer side of the back plate (2). The back plate (2) has driven gears (605) meshing with the drive gear (604) on the upper and lower sides of the drive gear (604). The motor (601) is located in the drive groove (21) and its output shaft is connected to the center of the drive gear (604). The worm (602) is rotatably located in the drive groove (21) and is coaxially arranged with the driven gear (605). A worm wheel (603) meshing with the worm (602) is provided at the center of the bidirectional screw (61). The first fixing block (62) and the second fixing block (63) are respectively threaded to the two sides of the bidirectional screw (61), and the first fixing block (62) and the second fixing block (63) are arranged in an L-shape.

5. The online odor detection and analysis instrument according to claim 1, characterized in that: The sampling chamber (13) is equipped with a negative pressure pump (7).

6. The online odor detection and analysis instrument according to claim 1, characterized in that: The air inlet (14) is provided with a primary filter layer for filtering large particles.

7. The online odor detection and analysis instrument according to claim 1, characterized in that: The bypass port of the three-way valve (31) is equipped with a removable plug.

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