Volatile organic compound collecting device for environmental monitoring

Abstract

The utility model relates to the technical field of environmental monitoring, and discloses a volatile organic compound collecting device for environmental monitoring, which comprises a collecting structure, a reflective photoelectric sensor arranged in an upper groove, a metal oxide semiconductor sensor arranged in a lower groove, and a single chip microcomputer and a mobile power supply arranged in a working groove, bottle grooves are symmetrically formed in the two sides of the top end of the rotating disc, collecting bottles are installed in the bottle grooves, the single-chip microcomputer controls the air cylinder to contract, the lower end of the lower push rod shields light irradiated on the reflection type photoelectric sensor, and output signals of the reflection type photoelectric sensor are changed and can be directly used for driving the electromagnetic valve to be opened. The volatile organic compounds pass through the metal oxide semiconductor sensor, the concentration of the volatile organic compounds is detected, and when the concentration of the volatile organic compounds is too high, the single-chip microcomputer controls the buzzer to buzz so as to remind acquisition personnel to take protection measures.

Description

Technical Field

[0001] This utility model relates to the field of environmental monitoring technology, specifically to a volatile organic compound (VOC) collection device for environmental monitoring. Background Technology

[0002] In environmental monitoring, collecting volatile organic compounds (VOCs) is a crucial step in assessing air quality and pollution levels. VOCs have a significant impact on human health, damaging the liver, kidneys, brain, and nervous system, and causing serious consequences such as memory loss. Therefore, detecting VOC concentrations is of paramount importance.

[0003] For example, CN221078197U describes a volatile organic compound (VOC) collection device for environmental monitoring. It includes a support shell, a workbench fixedly mounted on top of the support shell, a column mounted on top of the workbench, and a collection mechanism mounted on top of the column. A rotating disk is rotatably mounted on top of the support shell, and multiple collection bottles are placed on the rotating disk. A sample guide tube is installed at the bottom of the collection mechanism, and the sample guide tube is adapted to the collection bottles. A vertical air inlet pipe is installed on the collection mechanism, and a horizontal air inlet pipe is rotatably mounted on top of the vertical air inlet pipe. A through hole is formed on the inner wall of the top of the horizontal air inlet pipe, and the same crossbar is fixedly mounted on the inner walls of both sides of the through hole. By synchronously rotating the rotating disk and the horizontal air inlet pipe, the collection direction can be changed while switching collection bottles, thereby achieving the purpose of collecting VOCs from different locations.

[0004] The aforementioned patent proposes that the sample guide tube can guide the collected volatile organic compounds to the collection bottle. However, in actual use, the support shell and the collection point are not sealed, which makes it easy for volatile organic compounds to leak. When the concentration of volatile organic compounds is too high, it can cause headaches, dizziness and other symptoms, affecting the health of the collectors and making it inconvenient to use.

[0005] Therefore, we propose a volatile organic compound (VOC) collection device for environmental monitoring to address the aforementioned problems. Utility Model Content

[0006] The purpose of this invention is to provide a volatile organic compound (VOC) collection device for environmental monitoring, in order to solve the problem mentioned in the background art where the support shell and the collection point are not sealed, leading to easy leakage of VOCs.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a volatile organic compound (VOC) collection device for environmental monitoring, comprising a collection structure, the collection structure including a workbench and an inner through hole opened at one end of the workbench, a support leg installed at the bottom end of the workbench, an upper groove and a lower groove opened on the inner wall of the inner through hole, a reflective photoelectric sensor installed in the upper groove, a metal oxide semiconductor sensor installed inside the lower groove, a working groove opened in the middle of one side of the workbench, a partition plate installed at the top of the working groove, a microcontroller and a mobile power supply installed inside the working groove, and the partition plate being positioned between the mobile power supply and the microcontroller, a sealing plate installed on the outer side of the working groove, an outer groove opened at the side end of the workbench, and a buzzer installed inside the outer groove;

[0008] A solenoid valve is installed at the bottom of the workbench below the inner through hole. An internally threaded pipe is installed on the outer side of the bottom of the solenoid valve. A limit cylinder is installed at the top of the workbench above the inner through hole. A sealing ring is installed at the top of the limit cylinder. An internal sampling component is slidably installed inside the limit cylinder. An adjustment component is installed at the top of the workbench on one side of the limit cylinder. An operating T-slot is opened at the top of the workbench on one side of the adjustment component. An electric drive motor is installed inside the operating T-slot. A rotating shaft is installed at the output end of the electric drive motor. A turntable is installed at the top of the rotating shaft. The turntable is movably installed inside the upper part of the operating T-slot. Bottle slots are symmetrically opened on both sides of the top of the turntable. A collection bottle is installed inside the bottle slot.

[0009] Preferably, a slot is formed on the outer surface of the workbench and on the side near the inner through hole, a glass plate is installed inside the slot, and an irradiation hole is formed through the slot and the inner through hole.

[0010] Preferably, the adjusting component includes a side plate fixedly installed on the outside of the limiting cylinder, a cylinder is installed through the middle of the side plate, the bottom end of the cylinder is installed on the top of the workbench, a connecting strip is installed on the top of the cylinder, an mounting plate is installed on one end of the connecting strip, an air pump is installed on the bottom end of the mounting plate, a positioning rod is installed on the bottom end of the connecting strip and on one side of the cylinder, and the lower end of the positioning rod passes through one end of the side plate.

[0011] Preferably, an outer plate is installed on the outside of the positioning rod, and the outer plate is located on the outside of the cylinder. An injection tube is installed at the bottom end of the outer plate, a connecting pipe is installed at the outlet end of the air pump, and a connecting hose is installed between the connecting pipe and the injection tube.

[0012] Preferably, the internal sampling component includes a lower push rod, the top end of which has an alignment hole, and the suction end of the air pump is installed inside the alignment hole.

[0013] Preferably, an air extraction pipe is installed inside the body of the lower push rod, and the top end of the air extraction pipe passes through the bottom end of the alignment hole.

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

[0015] 1. This utility model discloses a volatile organic compound (VOC) collection device for environmental monitoring. A microcontroller controls a cylinder to retract, and the lower end of the push rod blocks the light shining on a reflective photoelectric sensor. The output signal of the reflective photoelectric sensor changes and can be directly used to drive a solenoid valve to open. The VOCs pass through a metal oxide semiconductor sensor to detect the concentration of VOCs. When the VOC concentration is too high, the microcontroller will control a buzzer to emit a beeping sound to remind the collection personnel to take protective measures.

[0016] 2. The present invention discloses a volatile organic compound (VOC) collection device for environmental monitoring. When the push rod moves upward and passes the reflective photoelectric sensor, the microcontroller controls the electric drive motor to operate, controls the turntable to rotate, and changes the position of the collection bottle containing VOCs, so as to facilitate the replacement of the collection bottle during the extension and retraction of the cylinder. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the workbench and adjustment components of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the internal component of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the working groove of this utility model.

[0021] In the diagram: 1. Acquisition structure; 11. Workbench; 111. Slot; 112. Irradiation hole; 113. Internal through hole; 1131. Upper slot; 1132. Lower slot; 1133. Reflective photoelectric sensor; 1134. Metal oxide semiconductor sensor; 1135. Limiting cylinder; 1136. Sealing ring; 114. Solenoid valve; 115. Outer slot; 116. Buzzer; 117. Working slot; 1171. Sealing plate; 1172. Microcontroller; 1173. Partition plate; 1174. Power supply; 118. Operating T-shaped structure 1181. Slot; 1182. Electric drive motor; 12. Shaft; 13. Support leg; 14. Turntable; 15. Bottle slot; 16. Collection bottle; 17. Adjustment component; 18. Side plate; 19. Cylinder; 10. Connecting strip; 11. Positioning rod; 10. Mounting plate; 11. Air pump; 12. Connecting pipe; 13. External plate; 14. Injection tube; 15. Connecting hose; 16. Glass plate; 17. Internal collection component; 18. Push rod; 18. Alignment hole; 18. Air extraction pipe; 19. Internally threaded pipe. Detailed Implementation

[0022] 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.

[0023] Example 1: Please refer to Figures 1-4 A volatile organic compound (VOC) collection device for environmental monitoring includes a collection structure 1. The collection structure 1 includes a workbench 11 and an internal through-hole 113 extending through one end of the workbench 11. A support leg 12 is installed at the bottom of the workbench 11. An upper groove 1131 and a lower groove 1132 are formed on the inner wall of the internal through-hole 113. A reflective photoelectric sensor 1133 is installed in the upper groove 1131, and a metal-oxide-semiconductor (MODS) sensor 1134 is installed inside the lower groove 1132. The reflective photoelectric sensor 1133 is positioned above the MODS sensor 1134. A working groove 117 is formed in the middle of one side of the workbench 11. A partition 1173 is installed at the top of the interior to limit the movement range of the power bank 1174. The microcontroller 1172 and the power bank 1174 are installed inside the working slot 117, and the partition 1173 is located between the power bank 1174 and the microcontroller 1172. A sealing plate 1171 is installed on the outer side of the interior of the working slot 117. An outer slot 115 is opened on the side of the worktable 11. A buzzer 116 is installed inside the outer slot 115. The reflective photoelectric sensor 1133, the metal oxide semiconductor sensor 1134, the power bank 1174, the buzzer 116 and the microcontroller 1172 are electrically connected.

[0024] A solenoid valve 114 is installed at the bottom of the workbench 11 below the inner through hole 113. An internally threaded pipe 19 is installed on the outer side of the bottom of the solenoid valve 114. A limit cylinder 1135 is installed at the top of the workbench 11 above the inner through hole 113. A sealing ring 1136 is installed at the top of the inner part of the limit cylinder 1135. An inner sampling component 18 is slidably installed inside the limit cylinder 1135. An adjustment component 16 is installed at the top of the workbench 11 on one side of the limit cylinder 1135. A slot 111 is formed on the outer surface of the workbench 11 near the inner through hole 113. A glass plate 17 is installed inside the slot 111. An illumination hole 112 is formed between the slot 111 and the inner through hole 113. The glass plate 17 is used for the transmission of external light.

[0025] The adjusting component 16 includes a side plate 161 fixedly installed on the outside of the limiting cylinder 1135. A cylinder 162 is installed through the middle of the side plate 161, and the bottom end of the cylinder 162 is installed on the top of the workbench 11. A connecting strip 163 is installed on the top of the cylinder 162. A mounting plate 164 is installed on one end of the connecting strip 163. A vacuum pump 165 is installed on the bottom end of the mounting plate 164. A positioning rod 1631 is installed on the bottom end of the connecting strip 163 and on one side of the cylinder 162. The lower end of the positioning rod 1631 passes through one end of the side plate 161. The positioning rod 1631 limits the movement of the connecting strip 163 carried by the cylinder 162 by limiting the movement of the connecting strip 163 on one side of the top of the side plate 161.

[0026] An external plate 167 is installed on the outside of the positioning rod 1631, and the external plate 167 is located on the outside of the cylinder 162. An injection tube 168 is installed at the bottom of the external plate 167. A connecting pipe 166 is installed at the outlet of the vacuum pump 165. A connecting hose 169 is installed between the connecting pipe 166 and the injection tube 168. The injection tube 168 is aligned with the middle of the bottle slot 14. The volatile organic compounds extracted by the vacuum pump 165 can be injected into the inside of the collection bottle 15 through the connecting pipe 166, the connecting hose 169 and the injection tube 168.

[0027] The inner component 18 includes a lower push rod 181, with an alignment hole 182 at the top of the lower push rod 181. The suction end of the air pump 165 is installed inside the alignment hole 182. The lower end of the lower push rod 181 is adapted to the interior of the limiting cylinder 1135. A sealing ring 1136 is provided to seal the space between the limiting cylinder 1135 and the lower push rod 181.

[0028] The lower push rod 181 has an air extraction pipe 183 installed inside its body, and the top end of the air extraction pipe 183 passes through the bottom end of the alignment hole 182, which is connected to the air extraction end of the air pump 165.

[0029] In this embodiment: the internally threaded tube 19 is connected to the collection point, the support leg 12 is used to support the entire collection structure 1, the collection bottle 15 is placed inside the bottle slot 14, and when the collection structure 1 is used for collection, the microcontroller 1172 controls the cylinder 162 to retract, and moves downward through the connecting strip 163, mounting plate 164, suction pump 165 and external plate 167. When the lower push rod 181 carries the suction tube 183 down to the inside of the inner through hole 113, the lower end of the lower push rod 181 passes through the reflective photoelectric sensor 1133, blocking the light that shines on the reflective photoelectric sensor 1133 through the glass plate 17 and the illumination hole 112. The output signal of the reflective photoelectric sensor 1133 changes, which can be directly used to drive the solenoid valve 1. When cylinder 14 is opened, volatile organic compounds (VOCs) flow into the limiting cylinder 1135. The VOCs pass through the metal oxide semiconductor sensor 1134, which detects the concentration of VOCs. When the concentration of VOCs is too high, the microcontroller 1172 controls the buzzer 116 to sound an alarm to remind the collectors to take protective measures. During the retraction of cylinder 162, the bottom end of the injection tube 168 is inserted into the collection bottle 15. When the vacuum pump 165 is operating, it extracts VOCs through the vacuum tube 183. The VOCs are discharged into the injection tube 168 through the connecting pipe 166 and the connecting hose 169, and then injected into the collection bottle 15 through the injection tube 168, thus completing the collection of VOCs.

[0030] Example 2: This example is an improvement upon Example 1. For details, please refer to [link / reference]. Figure 1 and Figure 2 The top of the workbench 11 and one side of the adjustment component 16 are provided with an operating T-shaped groove 118. An electric drive motor 1181 is installed inside the operating T-shaped groove 118. A rotating shaft 1182 is installed at the output end of the electric drive motor 1181. A turntable 13 is installed at the top of the rotating shaft 1182. The turntable 13 is movably installed inside the upper part of the operating T-shaped groove 118. Bottle slots 14 are symmetrically provided on both sides of the top of the turntable 13. Collection bottles 15 are installed inside the bottle slots 14.

[0031] In this embodiment: when the cylinder 162 extends, light shines through the glass plate 17 and the irradiation hole 112 onto the metal oxide semiconductor sensor 1134. The microcontroller 1172 controls the solenoid valve 114 to close, and the vacuum pump 165 stops operating. As the mounting plate 164 moves upward, the bottom end of the injection tube 168 moves out from the top of the collection bottle 15. When the bottom end of the push rod 181 passes the reflective photoelectric sensor 1133, the microcontroller 1172 controls the electric drive motor 1181 to operate, controlling the turntable 13 to rotate inside the upper end of the operating T-shaped groove 118, changing the position of the collection bottle 15 containing volatile organic compounds. After the collection bottle 15 containing volatile organic compounds is taken out, the collection bottle 15 without volatile organic compounds is placed inside the bottle groove 14, which facilitates the replacement of the collection bottle 15 during the extension and retraction of the cylinder 162.

[0032] Working principle: The microcontroller 1172 controls the cylinder 162 to retract, and the lower end of the push rod 181 blocks the light shining on the reflective photoelectric sensor 1133. The output signal of the reflective photoelectric sensor 1133 changes, which can be directly used to drive the solenoid valve 114 to open. Volatile organic compounds pass through the metal oxide semiconductor sensor 1134 to detect the concentration of volatile organic compounds. When the concentration of volatile organic compounds is too high, the microcontroller 1172 will control the buzzer 116 to emit a buzzing sound to remind the data collection personnel to take protective measures.

[0033] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A volatile organic compound (VOC) collection device for environmental monitoring, comprising a collection structure (1), characterized in that: The acquisition structure (1) includes a workbench (11) and an inner through hole (113) extending through one end of the workbench (11). A support leg (12) is installed at the bottom of the workbench (11). An upper groove (1131) and a lower groove (1132) are formed on the inner wall of the inner through hole (113). A reflective photoelectric sensor (1133) is installed in the upper groove (1131), and a metal-oxide-semiconductor sensor (1134) is installed inside the lower groove (1132). A working part is formed at the middle of one side of the workbench (11). The working trough (117) has a partition (1173) installed at the top of its interior. The working trough (117) has a microcontroller (1172) and a power supply (1174) installed inside it. The partition (1173) is located between the power supply (1174) and the microcontroller (1172). The working trough (1171) has a sealing plate (1171) installed on the outside of its interior. The worktable (11) has an outer groove (115) on its side end. A buzzer (116) is installed inside the outer groove (115). A solenoid valve (114) is installed at the bottom of the workbench (11) and below the inner through hole (113). An internally threaded pipe (19) is installed on the outer side of the bottom of the solenoid valve (114). A limit cylinder (1135) is installed at the top of the workbench (11) and above the inner through hole (113). A sealing ring (1136) is installed at the top of the inner part of the limit cylinder (1135). An inner sampling component (18) is slidably installed inside the limit cylinder (1135). An adjustment component (19) is installed at the top of the workbench (11) and on one side of the limit cylinder (1135). 6) An operating T-shaped groove (118) is provided at the top of the workbench (11) and on one side of the adjusting component (16). An electric drive motor (1181) is installed inside the operating T-shaped groove (118). A rotating shaft (1182) is installed at the output end of the electric drive motor (1181). A turntable (13) is installed at the top of the rotating shaft (1182). The turntable (13) is movably installed at the upper end inside the operating T-shaped groove (118). Bottle slots (14) are symmetrically provided on both sides of the top of the turntable (13). A collection bottle (15) is installed inside the bottle slot (14).

2. The volatile organic compound (VOC) collection device for environmental monitoring according to claim 1, characterized in that: A slot (111) is provided on the outer surface of the workbench (11) and on the side near the inner through hole (113). A glass plate (17) is installed inside the slot (111). An irradiation hole (112) is provided between the slot (111) and the inner through hole (113).

3. The volatile organic compound (VOC) collection device for environmental monitoring according to claim 1, characterized in that: The adjustment component (16) includes a side plate (161) fixedly installed on the outside of the limiting cylinder (1135). A cylinder (162) is installed through the middle of the side plate (161), and the bottom end of the cylinder (162) is installed on the top of the workbench (11). A connecting strip (163) is installed on the top of the cylinder (162). A mounting plate (164) is installed on one end of the connecting strip (163). A vacuum pump (165) is installed on the bottom end of the mounting plate (164). A positioning rod (1631) is installed on the bottom end of the connecting strip (163) and on one side of the cylinder (162). The lower end of the positioning rod (1631) passes through one end of the side plate (161).

4. The volatile organic compound (VOC) collection device for environmental monitoring according to claim 3, characterized in that: An outer plate (167) is installed on the outside of the positioning rod (1631), and the outer plate (167) is located on the outside of the cylinder (162). An injection tube (168) is installed at the bottom of the outer plate (167), and a connecting pipe (166) is installed at the outlet of the air pump (165). A connecting hose (169) is installed between the connecting pipe (166) and the injection tube (168).

5. The volatile organic compound (VOC) collection device for environmental monitoring according to claim 1, characterized in that: The internal sampling component (18) includes a lower push rod (181), the top end of which is provided with an alignment hole (182), and the suction end of the air pump (165) is installed inside the alignment hole (182).

6. The volatile organic compound (VOC) collection device for environmental monitoring according to claim 5, characterized in that: The lower push rod (181) has an air extraction pipe (183) installed inside its body, and the top end of the air extraction pipe (183) passes through the bottom end of the alignment hole (182).

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