VOC monitoring alarm device and monitoring method

Abstract

The VOC monitoring and alarming device comprises a VOC monitoring and alarming instrument body, the outer side of the VOC monitoring and alarming instrument body is sleeved with a shielding mechanism, a plurality of air holes are formed in one side of the VOC monitoring and alarming instrument body, and a cleaning mechanism is arranged on the outer sides of the air holes. The back of the VOC monitoring alarm apparatus main body is fixedly connected with a back plate; the cleaning mechanism comprises a two-way lead screw, the middle section of the two-way lead screw is connected with a supporting frame, one end of the supporting frame is connected with the back plate, the middle position of the two-way lead screw is fixedly connected with a first gear, one side of the first gear is meshed with a second gear, and the bottom end of the second gear is fixedly connected with a servo motor; the VOC monitoring alarm device and the monitoring method disclosed by the invention have the effects of realizing automatic cleaning of the air holes, guaranteeing the adsorption quantity of air and further guaranteeing the VOC monitoring result.

Description

TECHNICAL FIELD

[0001] The present application relates to the VOC monitoring technical field, especially to a VOC monitoring alarm device and a monitoring method. BACKGROUND

[0002] VOC is mainly generated by industrial waste gas from petrochemical industry, transportation, natural fuel combustion, etc. in outdoor. These waste gases contain a large amount of VOC, which has a significant impact on environmental quality. At the same time, automobile exhaust is an important source of VOC. Automobile exhaust contains a variety of volatile organic compounds, which will participate in the oxidation of nitrogen after being discharged into the atmosphere, generate ozone and destroy atmospheric air quality. In summer, VOC will participate in photochemical reactions under the action of sunlight and heat, generate secondary pollutants such as ozone, form photochemical smog, and further deteriorate air quality.

[0003] Because VOC has a great impact on human health, VOC monitoring alarm devices are generally used to monitor the VOC content in outdoor air. Generally, air is sucked through the set air inlet, and then the sucked air is monitored. In the long-term use of the VOC monitoring alarm device, the air inlet position will adsorb external dust and cause blockage, thereby affecting the monitoring result of VOC. SUMMARY

[0004] The present application discloses a VOC monitoring alarm device and a monitoring method, which aims to solve the technical problem that the air inlet position will adsorb external dust and cause blockage in the long-term use of the VOC monitoring alarm device, thereby affecting the monitoring result of VOC.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] A VOC monitoring alarm device, comprising a VOC monitoring alarm instrument main body, a shielding mechanism is sleeved on the outer side of the VOC monitoring alarm instrument main body, a plurality of air inlets are arranged on one side of the VOC monitoring alarm instrument main body, a cleaning mechanism is arranged on the outer side of the plurality of air inlets, and a back plate is fixedly connected to the back of the VOC monitoring alarm instrument main body.

[0007] The cleaning mechanism comprises a bidirectional screw rod, a supporting frame is connected to the middle segment of the bidirectional screw rod, one end of the supporting frame is connected to the back plate, a gear one is fixedly connected to the middle position of the bidirectional screw rod, a gear two is engaged on one side of the gear one, a servo motor is fixedly connected to the bottom end of the gear two, and the gear two and the servo motor are connected to the supporting frame at the same time.

[0008] The bidirectional lead screw has two symmetrically meshing nut sliders, and each nut slider is connected to a support frame on the same side. The inner walls of the opposite sides of the support frame are fixedly connected to supports, and a second support shaft is rotatably connected inside the support. A roller is fixedly connected to the middle section of the second support shaft, and the roller is wrapped with a horsehair brush layer. A scraper is fixedly connected to one side of the inner wall of each support frame, and one end of the scraper is attached to one side of the horsehair brush layer.

[0009] A bearing is provided at the connection between the bidirectional lead screw and the support frame. A slider three is fixedly connected to the outer wall of the other side of each support frame. A side bracket is fixedly connected to the outer wall of one side of the back plate, and a sliding rod is fixedly connected to the top and bottom of the side bracket. The slider three is movably sleeved on the outside of the sliding rod.

[0010] Equipped with a cleaning mechanism, the cleaning mechanism moves two support frames to the outside of the VOC monitoring and alarm unit. The horsehair brush layer fits perfectly against multiple air vents. As it moves downwards, it rotates the rollers. During rotation, the horsehair brush layer contacts the scraper, continuously cleaning the dirt adhering to it. As the brush rolls, it inserts into and adheres to dirt inside the air vents, carrying it out. This achieves automatic cleaning of the air vents, ensuring sufficient air adsorption and further guaranteeing VOC monitoring results.

[0011] In a preferred embodiment, the shielding mechanism includes an inner frame, and the inner wall of the inner frame is movably fitted to the outer wall of the VOC monitoring alarm body. The outer frame is movably sleeved on the outer wall of the inner frame, and the inner wall of the outer frame is movably fitted to the outer wall of the inner frame. A bottom plate is fixedly connected to the bottom outer wall of the back plate.

[0012] The VOC monitoring alarm body has waist-shaped grooves on its multi-directional inner walls, and multiple sliders are arranged around the inner wall of the inner frame. The multiple sliders are movably connected to the multiple waist-shaped grooves.

[0013] The outer wall of the inner frame is provided with multiple waist-shaped through slots, and the inner wall of the outer frame is provided with multiple sliders, which are movably connected to the multiple waist-shaped through slots respectively.

[0014] Multiple drainage holes are simultaneously provided through the bottom ends of the outer frame and the inner frame. A support shaft is fixedly connected to the bottom end of the outer frame, and a rotating ring is movably sleeved on the support shaft. A short rod is fixedly connected to one side of the rotating ring, and a long rod is fixedly connected to the other side of the rotating ring.

[0015] With the addition of a shielding mechanism, the inner and outer frames can be opened before rain or during the rainy season. Then, the rotating ring can be rotated so that one end of the long rod rests against one side of the back panel, thus ensuring the open state of the outer and inner frames and providing a shielding effect. Rainwater that enters the outer and inner frames at an angle can be discharged through the drainage holes, thereby ensuring the normal operation of the outdoor VOC monitoring alarm device.

[0016] In a preferred embodiment, each of the supporting frames has an L-shaped support plate one fixedly connected to the outer walls on opposite sides, and a spring fixedly connected to one side of the L-shaped support plate one. One end of the spring is fixedly connected to an L-shaped support plate two, and the L-shaped support plate two is correspondingly fixedly connected to one side of the nut slider.

[0017] A monitoring method for a VOC monitoring alarm device includes the following specific steps:

[0018] S1: Fix the main body of the VOC monitoring alarm to an outdoor wall or pillar. After being turned on, it will draw in air through the ventilation holes and monitor the VOC content in the air. If the monitoring exceeds the threshold, an alarm will be triggered.

[0019] S2: Set the servo motor start frequency. When starting, it drives the support frame to rise and fall, and cleans the ventilation holes through the horsehair brush layer.

[0020] S3: In rainy weather, the inner and outer frames can be pulled apart, and the long rod can be moved to rest against the back panel to prevent rainwater from eroding the main body of the VOC monitoring alarm.

[0021] S4: After the rain ends, rotate the long pole to make the short pole rest against the back plate, and clean the horsehair brush layer during the lifting and lowering of the support frame.

[0022] By incorporating a spring and a short rod, the horsehair brush layer will adhere to rainwater after rain, but due to the properties of horsehair, it will not become soaked. Therefore, after rain, the long rod can be manually rotated so that one end of the short rod rests against one side of the back plate. During the movement, the horsehair brush layer can rest against the outside of the outer frame, detaching from the main body of the VOC monitoring alarm. Based on the friction between the horsehair brush layer and the outer frame, the roller rotates. During the rotation, the horsehair brush layer is squeezed by the scraper, which can expel the water from the horsehair brush layer. This structure can effectively prevent rainwater on the horsehair brush layer from entering the vent holes, achieving automatic cleaning of rainwater from the horsehair brush layer.

[0023] As described above, a VOC monitoring and alarm device includes a VOC monitoring and alarm instrument body. A shielding mechanism is sleeved on the outer side of the VOC monitoring and alarm instrument body, and multiple ventilation holes are provided on one side of the VOC monitoring and alarm instrument body. A cleaning mechanism is provided on the outer side of the multiple ventilation holes. A back plate is fixedly connected to the back of the VOC monitoring and alarm instrument body. The cleaning mechanism includes a bidirectional lead screw, and a support frame is connected to the middle section of the bidirectional lead screw. One end of the support frame is connected to the back plate. A gear is fixedly connected to the middle position of the bidirectional lead screw, and one side of the gear... A second gear is engaged, and a servo motor is fixedly connected to the bottom end of the second gear. Both the second gear and the servo motor are connected to a support frame. Two nut sliders are symmetrically engaged on the bidirectional lead screw, and a support frame is connected to the same side of each nut slider. Supports are fixedly connected to the inner walls of opposite sides of the support frames, and a second support shaft is rotatably connected within the support. A roller is fixedly connected to the middle section of the second support shaft, and the roller is covered with a horsehair brush layer. A scraper is fixedly connected to the inner wall of one side of each support frame, and one end of the scraper is attached to one side of the horsehair brush layer. The VOC monitoring alarm device and monitoring method provided by this invention have the technical effect of automatically cleaning the vent holes, ensuring the amount of air adsorption, and further ensuring the VOC monitoring results. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a VOC monitoring and alarm device proposed in this invention.

[0025] Figure 2 This is a schematic diagram showing the cleaning structure of a VOC monitoring and alarm device proposed in this invention.

[0026] Figure 3 This is a schematic diagram of the lifting structure of a VOC monitoring and alarm device proposed in this invention.

[0027] Figure 4 This is a cross-sectional view of the clean structure of a VOC monitoring and alarm device proposed in this invention.

[0028] Figure 5 This is a schematic diagram showing the disassembly of the shielding mechanism of a VOC monitoring and alarm device proposed in this invention.

[0029] In the diagram: 1. Back plate; 2. Shielding mechanism; 3. Ventilation hole; 4. Main body of VOC monitoring and alarm instrument; 5. Cleaning mechanism; 201. Waist-shaped groove; 202. Inner frame; 203. Waist-shaped through groove; 204. Outer frame; 205. Slider 1; 206. Slider 2; 207. Drain hole; 208. Support shaft 1; 209. Short rod; 210. Rotary ring; 211. Long rod; 212. Base plate; 501. Slider 3; 502, slide rod; 503, side bracket; 504, L-shaped support plate one; 505, support frame; 506, support; 507, support shaft two; 508, horsehair brush layer; 509, roller; 510, L-shaped support plate two; 511, spring; 512, nut slider; 513, double-acting lead screw; 514, gear one; 515, support frame; 516, servo motor; 517, gear two; 518, scraper. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] The VOC monitoring alarm device and monitoring method disclosed in this invention are mainly applied to VOC monitoring scenarios.

[0032] Reference Figures 1-4 A VOC monitoring and alarm device includes a VOC monitoring and alarm instrument body 4, a shielding mechanism 2 is sleeved on the outside of the VOC monitoring and alarm instrument body 4, and a plurality of ventilation holes 3 are provided on one side of the VOC monitoring and alarm instrument body 4. A cleaning mechanism 5 is provided on the outside of the plurality of ventilation holes 3, and a back plate 1 is fixedly connected to the back of the VOC monitoring and alarm instrument body 4.

[0033] The cleaning mechanism 5 includes a bidirectional lead screw 513, and a support frame 515 is connected to the middle section of the bidirectional lead screw 513. One end of the support frame 515 is connected to the back plate 1. A gear 1 514 is fixedly connected to the middle position of the bidirectional lead screw 513, and a gear 2 517 is meshed on one side of the gear 1 514. A servo motor 516 is fixedly connected to the bottom end of the gear 2 517, and the gear 2 517 and the servo motor 516 are simultaneously connected to the support frame 515.

[0034] Two nut sliders 512 are symmetrically meshed on the bidirectional lead screw 513, and a support frame 505 is connected to the same side of each nut slider 512. Supports 506 are fixedly connected to the inner walls of opposite sides of the support frame 505, and a second support shaft 507 is rotatably connected within the support 506. A roller 509 is fixedly connected to the middle section of the second support shaft 507, and a horsehair brush layer 508 is wrapped around the roller 509. A scraper 518 is fixedly connected to one inner wall of each support frame 505, and one end of the scraper 518 is attached to one side of the horsehair brush layer 508. In the cleaning mechanism 5, a servo motor 516 drives a second gear 517 to rotate, which in turn drives the bidirectional lead screw 513 to rotate via a meshing gear 514. During the process, the two nut sliders 512 move inward or outward synchronously, causing the two support frames 505 to move to the outside of the VOC monitoring alarm body 4. The horsehair brush layer 508 fits perfectly against the multiple vent holes 3. As it moves downward, the contact between the horsehair brush layer 508 and the outside of the VOC monitoring alarm body 4 causes the roller 509 to rotate. During the rotation, the horsehair brush layer 508 contacts the scraper 518, continuously cleaning the dirt adhering to the horsehair brush layer 508. As the horsehair brush layer 508 rolls, it inserts into and adheres to the dirt inside the vent holes 3 and carries it out, thereby achieving automatic cleaning of the vent holes 3, ensuring the amount of air adsorption, and further ensuring the VOC monitoring results.

[0035] Reference Figure 1 In a preferred embodiment, a bearing is provided at the connection between the bidirectional lead screw 513 and the support frame 515. A slider 3 501 is fixedly connected to the outer wall of the other side of each support frame 505. A side bracket 503 is fixedly connected to one side of the outer wall of the back plate 1, and a sliding rod 502 is fixedly connected to the top and bottom of the side bracket 503. The slider 3 501 is movably sleeved on the outside of the sliding rod 502.

[0036] Reference Figure 5 In a preferred embodiment, the shielding mechanism 2 includes an inner frame 202, the inner wall of which is movably fitted against the outer wall of the VOC monitoring alarm body 4. An outer frame 204 is movably sleeved onto the outer wall of the inner frame 202, and the inner wall of the outer frame 204 is movably fitted against the outer wall of the inner frame 202. A base plate 212 is fixedly connected to the bottom outer wall of the back plate 1.

[0037] Reference Figure 5 In a preferred embodiment, the VOC monitoring alarm body 4 is provided with waist-shaped grooves 201 on its multi-directional inner wall, and a plurality of sliders 205 are arranged around the inner wall of the inner frame 202, and the plurality of sliders 205 are movably connected to the plurality of waist-shaped grooves 201 respectively.

[0038] Reference Figure 5In a preferred embodiment, the outer wall of the inner frame 202 is provided with a plurality of waist-shaped through slots 203, and the inner wall of the outer frame 204 is provided with a plurality of sliders 206, which are movably connected to the plurality of waist-shaped through slots 203 respectively.

[0039] Reference Figure 5 In a preferred embodiment, multiple drainage holes 207 are simultaneously provided through the bottom ends of both the outer frame 204 and the inner frame 202. A support shaft 208 is fixedly connected to the bottom end of the outer frame 204, and a rotating ring 210 is movably sleeved on the support shaft 208. A short rod 209 is fixedly connected to one side of the rotating ring 210, and a long rod 211 is fixedly connected to the other side of the rotating ring 210. Before rain or during the rainy season, the inner frame 202 and the outer frame 204 can be pulled apart, and the inner frame 202 and the outer frame 204 can be opened by sliding blocks 205 in the waist-shaped grooves. The inner frame 202 and outer frame 204 are limited by the movement of slider 201 and slider 206 within the waist-shaped groove 203. After being pulled open, the rotating ring 210 is rotated so that one end of the long rod 211 abuts against one side of the back plate 1, thus ensuring the unfolded state of the outer frame 204 and inner frame 202, which serves as a shield. Rainwater that enters the outer frame 204 and inner frame 202 at an angle can be discharged through the drain hole 207, thereby ensuring the normal use of the outdoor VOC monitoring alarm main body 4.

[0040] Reference Figure 2 In a preferred embodiment, each of the opposing outer walls of the support frame 505 is fixedly connected to an L-shaped support plate 504, and a spring 511 is fixedly connected to one side of the L-shaped support plate 504. One end of the spring 511 is fixedly connected to an L-shaped support plate 510, which is correspondingly fixedly connected to one side of the nut slider 512. After rain, the horsehair brush layer 508 will be covered with rainwater, but due to the characteristics of horsehair, it will not become wet. Therefore, after rain, the long rod 211 can be manually rotated so that one end of the short rod 209 rests against one side of the back plate 1. At this time, the outer side of the outer frame 204 protrudes slightly from one side of the VOC monitoring alarm body 4. When the support frame 505 moves towards the center on the bidirectional lead screw 513, the horsehair brush layer 508 can abut against the outside of the outer frame 204, detach from the VOC monitoring alarm body 4, and drive the roller 509 to rotate based on the friction between the horsehair brush layer 508 and the outer frame 204. During the rotation, the horsehair brush layer 508 is squeezed by the scraper 518, which can discharge the water from the horsehair brush layer 508. The setting of the spring 511 can make the position of the horsehair brush layer 508 adapt to the positions of the VOC monitoring alarm body 4 and the outer frame 204 respectively. This structure can effectively prevent rainwater on the horsehair brush layer 508 from entering the vent hole 3, realizing the automatic cleaning of rainwater on the horsehair brush layer 508.

[0041] Reference Figures 1-5A monitoring method for a VOC monitoring alarm device includes the following specific steps:

[0042] S1: Fix the main body 4 of the VOC monitoring alarm to an outdoor wall or pillar. After it is turned on, it will adsorb air through the ventilation hole 3 and monitor the VOC content in the air. If the monitoring exceeds the threshold, an alarm will be triggered.

[0043] S2: Set the start frequency of servo motor 516. When starting, it drives the support frame 505 to rise and fall, and cleans the ventilation holes 3 through the horsehair brush layer 508.

[0044] S3: In rainy weather, the inner frame 202 and the outer frame 204 can be pulled apart, and the long rod 211 can be moved to press against the back plate 1 to prevent rainwater from eroding the main body 4 of the VOC monitoring alarm.

[0045] S4: After the rain ends, rotate the long rod 211 so that the short rod 209 rests against the back plate 1, and clean the horsehair brush layer 508 during the lifting and lowering of the support frame 505.

[0046] Working principle: In the cleaning mechanism 5, the servo motor 516 drives the gear 2 517 to rotate, and through the gear 1 514 meshing with it, drives the bidirectional lead screw 513 to rotate. During the rotation, the two nut sliders 512 move inward or outward synchronously, driving the two support frames 505 to move to the outside of the VOC monitoring alarm body 4. The horsehair brush layer 508 is just in contact with multiple air holes 3. During the continuous downward movement, based on the contact between the horsehair brush layer 508 and the outside of the VOC monitoring alarm body 4, the roller 509 can be driven to rotate. During the rotation, the horsehair brush layer 508 contacts the scraper 518, which can continuously clean the dirt adhering to the horsehair brush layer 508. During the rolling process, the horsehair brush layer 508 inserts into and adheres to the dirt inside the air holes 3 and carries it out, thereby realizing the automatic cleaning of the air holes 3, ensuring the amount of air adsorption, and further ensuring the VOC monitoring results.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A VOC monitoring and alarm device, comprising a VOC monitoring and alarm instrument body (4), characterized in that, The VOC monitoring alarm body (4) is fitted with a shielding mechanism (2) on the outside, and a plurality of ventilation holes (3) are provided on one side of the VOC monitoring alarm body (4). A cleaning mechanism (5) is provided on the outside of the plurality of ventilation holes (3). A back plate (1) is fixedly connected to the back of the VOC monitoring alarm body (4). The cleaning mechanism (5) includes a bidirectional lead screw (513), and a support frame (515) is connected to the middle section of the bidirectional lead screw (513). One end of the support frame (515) is connected to the back plate (1). A gear one (514) is fixedly connected to the middle position of the bidirectional lead screw (513), and a gear two (517) meshes with one side of the gear one (514). A servo motor (516) is fixedly connected to the bottom end of the gear two (517), and the gear two (517) and the servo motor (516) are simultaneously connected to the support frame (515). Two nut sliders (512) are symmetrically engaged on the bidirectional lead screw (513), and a support frame (505) is connected to the same side of each nut slider (512). Supports (506) are fixedly connected to the inner walls of opposite sides of the support frame (505), and a second support shaft (507) is rotatably connected inside the support (506). A roller (509) is fixedly connected to the middle section of the second support shaft (507), and a horsehair brush layer (508) is wrapped around the roller (509). A scraper (518) is fixedly connected to the inner wall of one side of each support frame (505), and one end of the scraper (518) is attached to one side of the horsehair brush layer (508).

2. The VOC monitoring and alarm device according to claim 1, characterized in that, A bearing is provided at the connection between the bidirectional lead screw (513) and the support frame (515). A slider three (501) is fixedly connected to the outer wall of the other side of each support frame (505). A side bracket (503) is fixedly connected to the outer wall of one side of the back plate (1). A sliding rod (502) is fixedly connected to the top and bottom of the side bracket (503). The slider three (501) is movably sleeved on the outside of the sliding rod (502).

3. The VOC monitoring and alarm device according to claim 1, characterized in that, The shielding mechanism (2) includes an inner frame (202), and the inner wall of the inner frame (202) is movably attached to the outer wall of the VOC monitoring alarm body (4). The outer wall of the inner frame (202) is movably sleeved with an outer frame (204), and the inner wall of the outer frame (204) is movably attached to the outer wall of the inner frame (202). The bottom outer wall of the back plate (1) is fixedly connected to a bottom plate (212).

4. The VOC monitoring and alarm device according to claim 2, characterized in that, The VOC monitoring alarm body (4) has waist-shaped grooves (201) on its multi-directional inner wall, and multiple sliders (205) are arranged around the inner wall of the inner frame (202). The multiple sliders (205) are movably connected to the multiple waist-shaped grooves (201).

5. A VOC monitoring and alarm device according to claim 4, characterized in that, The outer wall of the inner frame (202) is provided with a plurality of waist-shaped through slots (203), and the inner wall of the outer frame (204) is provided with a plurality of sliders (206), which are movably connected to the plurality of waist-shaped through slots (203).

6. A VOC monitoring and alarm device according to claim 5, characterized in that, The bottom ends of the outer frame (204) and the inner frame (202) are provided with multiple water leakage holes (207). The bottom end of the outer frame (204) is fixedly connected to a support shaft (208), and a rotating ring (210) is movably sleeved on the support shaft (208). A short rod (209) is fixedly connected to one side of the rotating ring (210), and a long rod (211) is fixedly connected to the other side of the rotating ring (210).

7. A VOC monitoring and alarm device according to claim 1, characterized in that, Each of the support frames (505) has an L-shaped support plate (504) fixedly connected to the outer walls on both sides, and a spring (511) is fixedly connected to one side of the L-shaped support plate (504). One end of the spring (511) is fixedly connected to an L-shaped support plate (510), and the L-shaped support plate (510) is fixedly connected to one side of the nut slider (512).

8. A monitoring method for a VOC monitoring and alarm device, applied to the VOC monitoring and alarm device described in claims 6 and 7, characterized in that, The specific steps include the following: S1: Fix the main body (4) of the VOC monitoring alarm to an outdoor wall or pillar. After it is turned on, it will adsorb air through the vent (3) and monitor the VOC content in the air. If the monitoring exceeds the threshold, an alarm will be triggered. S2: Set the start frequency of the servo motor (516). When starting, it drives the support frame (505) to rise and fall, and cleans the ventilation holes (3) through the horsehair brush layer (508). S3: In rainy weather, the inner frame (202) and outer frame (204) can be pulled apart, and the long rod (211) can be moved to press against the back plate (1) to prevent rainwater from eroding the main body (4) of the VOC monitoring alarm instrument. S4: After the rain ends, rotate the long rod (211) so that the short rod (209) abuts against the back plate (1) and clean the horsehair brush layer (508) during the lifting and lowering of the support frame (505).

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