Portable toxic and harmful gas detection early warning device

Abstract

The invention discloses a portable toxic and harmful gas detection early warning device, and relates to the technical field of air pollution detection. The portable toxic and harmful gas detection early warning device comprises a wrist strap, a device box is fixedly connected to the top of the wrist strap, a buckle is fixedly connected to the bottom of the wrist strap, and a detection mechanism is fixedly connected to the interior of the device box. According to the portable poisonous and harmful gas detection early warning device, the spiral blade is driven, external air is pushed into the ventilation pipe through the air inlet pipe, meanwhile, the gas is heated, contact between the detection sensor and the air is promoted, the detection precision is improved, meanwhile, water drops are not prone to be condensed on the surface of the detection sensor through the heated air, and the detection accuracy is improved. Meanwhile, the sweeping blades are pushed by air flow, so that water attached to the surface of the detection sensor is scraped, the detection precision is improved, the situation that harmful gas cannot be detected due to the fact that the sensor is affected is avoided, and the effect of protecting detection personnel is achieved.

Description

Technical Field

[0001] This invention relates to the field of air pollution detection technology, specifically a portable device for detecting and warning of toxic and harmful gases. Background Technology

[0002] In the area surrounding a chemical plant, the air may contain a variety of characteristic toxic gases. These pollutants typically include hydrogen sulfide, ammonia, chlorine, benzene compounds, etc., which enter the atmosphere through leaks or emissions during the production process. Long-term exposure to this environment can cause acute or chronic damage to the human respiratory and nervous systems, posing a serious health risk. Chinese patent application number 202222646152.1 discloses a portable toxic and harmful gas detection and early warning device, which includes a detection device body. A detection component is provided at the top of the detection device body. A detection sensor is installed in the detection component, and an air pump is provided below the detection sensor. Sliding grooves are provided on both sides of the detection device body. A belt clip slides in the sliding groove. A strap is movably sleeved on the belt clip, and a Velcro is provided at the end of the strap. The Velcro at the ends of the two straps cooperate with each other. Chemical plants emit steam for production purposes, which results in a high moisture content in the air. Most existing air detection devices rely on sensors for detection. Moist air can cause water to condense on the sensor surface, which can prevent harmful gases from contacting the sensor. This can prevent the detection device from effectively detecting harmful gases and potentially harm the detection personnel. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a portable toxic and harmful gas detection and early warning device to solve the problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a portable toxic and harmful gas detection and early warning device, comprising a wristband, a device box fixedly connected to the top of the wristband, a buckle fixedly connected to the bottom of the wristband, a detection mechanism fixedly connected inside the device box, a ventilation mechanism fixedly connected inside the device box, and an extension mechanism fixedly connected to the top of the device box. Testing institutions include: A processor, which is fixedly connected inside the device housing; A detection sensor is disposed inside the device housing and is electrically connected to the processor; The ventilation system includes: A venting tube is fixedly connected inside the device box, and a detection sensor is located inside the venting tube.

[0005] Preferably, a buzzer is fixedly connected to the left side of the device box, and the buzzer is electrically connected to the processor. An indicator light is fixedly connected to the left side of the device box and is electrically connected to the processor. A storage battery is fixedly connected inside the device box and is electrically connected to the processor.

[0006] Preferably, a first connecting cover is fixedly connected to the back of the wristband and is connected to a vent pipe; a second connecting cover is fixedly connected to the front of the vent pipe and is connected to the vent pipe; an exhaust pipe is fixedly connected to the back of the second connecting cover; an air inlet pipe is fixedly connected to the front of the first connecting cover; a drive motor is fixedly connected to the back of the first connecting cover; and a spiral blade is fixedly connected to the front output shaft of the drive motor inside the air inlet pipe.

[0007] Preferably, an electric heater is fixedly connected to the outer wall of the air intake pipe, and a sweeping blade is movably connected inside the air vent pipe.

[0008] Preferably, the extension mechanism includes a connecting block, which is fixedly connected to the top of the device box, and the device box is connected to the exhaust pipe and the intake pipe respectively. An intake hose is fixedly connected to the left side of the connecting block, and the intake hose is connected to the intake pipe through the connecting block. An exhaust hose is fixedly connected to the left side of the connecting block, and the exhaust hose is connected to the exhaust pipe through the connecting block. A heat-conducting metal strip is fixedly connected to the outer wall of the exhaust hose, and the heat-conducting metal strip is fixedly connected to the outer wall of the intake hose.

[0009] Preferably, a hose rod is fixedly connected to the top of the device box, and the intake hose and exhaust hose can be wrapped around the outer wall of the hose rod.

[0010] Preferably, an exhaust head is fixedly connected to the left end of the exhaust hose, a blocking sleeve is fixedly connected inside the exhaust head, a pressure plug is movably connected inside the blocking sleeve to the left side of the intake hose, a spring is fixedly connected to the left side of the pressure plug, the left side of the spring is fixedly connected to the blocking sleeve, a connecting sleeve is fixedly connected to the outer wall of the exhaust head, and the connecting sleeve is fixedly connected to the outer wall of the intake hose.

[0011] Preferably, a rotating head is movably connected to the left side of the exhaust head via a bearing, and a drive blade is fixedly connected to the inner wall of the rotating head.

[0012] This invention provides a portable toxic and harmful gas detection and early warning device. It has the following beneficial effects: 1. This portable toxic and harmful gas detection and early warning device uses spiral blades to drive outside air into the ventilation pipe through the air inlet pipe. At the same time, the gas is heated, which promotes contact between the detection sensor and the air, increasing the detection accuracy. The heated air is less likely to condense water droplets on the surface of the detection sensor. The sweeping blades are also pushed by the airflow, which scrapes away the water adhering to the surface of the detection sensor, further increasing the detection accuracy and preventing the sensor from being affected and unable to detect harmful gases. This device also protects the detection personnel.

[0013] 2. This portable toxic and harmful gas detection and early warning device is driven to rotate by a spiral blade. The exhaust air enters the exhaust hose, causing the exhaust hose to support the intake hose. This extends the air intake position of the ventilation mechanism, keeping the testing personnel away from the air to be tested and preventing them from coming into contact with toxic and polluted air, thus protecting the testing personnel.

[0014] 3. This portable toxic and harmful gas detection and early warning device preheats the air by venting the air heated by the electric heater into the exhaust hose. The heated air then passes through a heat-conducting metal strip, which transfers heat to the unheated air inside the intake hose, thereby improving the utilization rate of heat, saving the device's power consumption, and thus enhancing the device's portability.

[0015] 4. This portable toxic and harmful gas detection and early warning device works by venting air into the exhaust head. The air can be discharged through the opening on the rotating head and is driven by the drive blades to rotate the rotating head. When the exhaust is performed, the rotating head is subjected to a reaction force, which causes the left end of the exhaust hose to sway, thereby increasing the range of air intake through the intake hose and increasing the detection range. This can improve the accuracy of air detection and protect the detection personnel. Attached Figure Description

[0016] Figure 1 This is a front-view stereoscopic structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention viewed from below; Figure 3 for Figure 2 Enlarged structural diagram of section A in the middle; Figure 4 This is a schematic diagram of the device box structure of the present invention; Figure 5 This is a cross-sectional view of the device box of the present invention; Figure 6 for Figure 5 Enlarged structural diagram of section C; Figure 7 for Figure 2 Enlarged structural diagram of section B; Figure 8 This is a cross-sectional view of the exhaust head structure of the present invention.

[0017] In the diagram: 1. Wristband; 2. Device box; 3. Detection mechanism; 301. Processor; 302. Battery; 303. Buzzer; 304. Indicator light; 305. Detection sensor; 4. Ventilation mechanism; 401. Ventilation pipe; 402. First connecting cover; 403. Second connecting cover; 404. Exhaust pipe; 405. Drive motor; 406. Intake pipe; 407. Electric heater; 408. Spiral blade; 409. Sweeping blade; 5. Buckle; 6. Extension mechanism; 601. Connecting block; 602. Intake hose; 603. Exhaust hose; 604. Pipe rod; 605. Connecting sleeve; 606. Heat-conducting metal strip; 607. Exhaust head; 608. Pressure plug; 609. Blocking sleeve; 610. Spring; 611. Rotating head; 612. Drive blade. Detailed Implementation

[0018] 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.

[0019] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0020] Example 1: Please refer to Figure 1-6 The present invention provides a technical solution: a portable toxic and harmful gas detection and early warning device, including a wristband 1, a device box 2 fixedly connected to the top of the wristband 1, a buckle 5 fixedly connected to the bottom of the wristband 1, a detection mechanism 3 fixedly connected inside the device box 2, a ventilation mechanism 4 fixedly connected inside the device box 2, and an extension mechanism 6 fixedly connected to the top of the device box 2. Testing agency 3 includes: Processor 301 is fixedly connected inside device box 2; The detection sensor 305 is disposed inside the device box 2 and is electrically connected to the processor 301. Ventilation mechanism 4 includes: Ventilation tube 401 is fixedly connected inside device box 2, and detection sensor 305 is installed inside ventilation tube 401.

[0021] The device is worn on the wrist and the wristband 1 is connected by the buckle 5, making it easy to carry the device for mobile detection.

[0022] A buzzer 303 is fixedly connected to the left side of the device box 2, and the buzzer 303 is electrically connected to the processor 301. An indicator light 304 is fixedly connected to the left side of the device box 2, and the indicator light 304 is electrically connected to the processor 301. A storage battery 302 is fixedly connected inside the device box 2, and the storage battery 302 is electrically connected to the processor 301. A switch is provided on the right outer wall of the device box 2, and a charging port for replenishing the storage battery 302 is provided on the right outer wall of the device box 2. The indicator light 304 is a power signal light. It indicates red when the storage battery 302 has low power, green when the device is powered on, and no indication when the device is powered off.

[0023] The detection sensor 305 comes into contact with the air and can detect toxic pollutants in the air. When toxic air is detected, the detection sensor 305 will transmit a signal to the processor 301, and the processor 301 will control the buzzer 303 to sound to alert the user of the device.

[0024] By pushing air to bring the flowing air into contact with the detection sensor 305, the contact between the detection sensor 305 and the air can be improved, increasing the detection accuracy. A first connecting cover 402 is fixedly connected to the back of the wristband 1, and the first connecting cover 402 is connected to the vent pipe 401. A second connecting cover 403 is fixedly connected to the front of the vent pipe 401, and the second connecting cover 403 is connected to the vent pipe 401. An exhaust pipe 404 is fixedly connected to the back of the second connecting cover 403. An air inlet pipe 406 is fixedly connected to the front of the first connecting cover 402. A drive motor 405 is fixedly connected to the back of the first connecting cover 402. The output shaft of the drive motor 405 is located inside the air inlet pipe 406 and a spiral blade 408 is fixedly connected to it.

[0025] Driven by the motor 405, the spiral blades 408 rotate, pushing outside air into the first connecting cover 402 through the air inlet pipe 406. The air then flows into the vent pipe 401 through the first connecting cover 402. The vent pipe 401 has a gradually expanding inner diameter, which reduces the airflow velocity inside, making it easier for the detection sensor 305 inside the vent pipe 401 to detect the air. Subsequently, the gas enters the second connecting cover 403 through the vent pipe 401 and is discharged to the outside through the exhaust pipe 404.

[0026] Scraping away the liquid adhering to the surface of the detection sensor 305 allows the sensor to remain in continuous contact with air, facilitating continuous detection. An electric heater 407 is fixedly connected to the outer wall of the air intake pipe 406, and a sweeping blade 409 is movably connected inside the air vent pipe 401. The electric heater 407 is electrically connected to the battery 302, and the sweeping blade 409 is spiral-shaped.

[0027] When air flows through the air intake pipe 406, the electric heater 407 heats the air inside the air intake pipe 406, thus heating the air entering the ventilation pipe 401. This reduces the amount of water condensed from moisture adhering to the outer wall of the detection sensor 305. At the same time, the air flowing into the ventilation pipe 401 drives the sweeping blade 409 to rotate. When the sweeping blade 409 rotates, it scrapes the surface of the detection sensor 305, removing the water adhering to the surface of the detection sensor 305. This prevents excessive water from adhering to the surface of the detection sensor 305 and hindering the contact between the detection sensor 305 and the air.

[0028] Example 2: Please refer to Figure 1-8 Based on Embodiment 1, the present invention provides a technical solution: The detection device is worn on the user's wrist. When it detects toxic pollutants in the air, the pollutants have already come into contact with the user. If the device can detect the air in front of the user, it can prevent the user from coming into contact with toxic pollutants.

[0029] The extension mechanism 6 includes a connecting block 601, which is fixedly connected to the top of the device box 2. The device box 2 is connected to the exhaust pipe 404 and the intake pipe 406 respectively. An intake hose 602 is fixedly connected to the left side of the connecting block 601. The intake hose 602 is connected to the intake pipe 406 through the connecting block 601. An exhaust hose 603 is fixedly connected to the left side of the connecting block 601. The exhaust hose 603 is connected to the exhaust pipe 404 through the connecting block 601. A heat-conducting metal strip 606 is fixedly connected to the outer wall of the exhaust hose 603, and the heat-conducting metal strip 606 is fixedly connected to the outer wall of the intake hose 602.

[0030] The spiral blade 408 is driven to rotate, which can send outside air into the ventilation pipe 401 through the intake hose 602. After the air is detected, the air is discharged to the outside through the exhaust hose 603. The air is pressured inside the exhaust hose 603, which supports the exhaust hose 603 and keeps it as straight as possible. Since the intake hose 602 is connected to the exhaust hose 603 through the heat-conducting metal strip 606, the exhaust hose 603 will simultaneously pull the intake hose 602 into a straight state. At this time, the intake hose 602 can pass air far away from the user into the ventilation pipe 401. The intake hose 602 extends the air intake position of the ventilation mechanism 4, so that the ventilation mechanism 4 can push the air from a distance into the detection sensor 305 for detection.

[0031] In addition, the air entering the vent pipe 401 through the intake hose 602 is heated by the electric heater 407. After the heated air enters the exhaust hose 603, the heated air transfers heat to the heat-conducting metal strip 606, which in turn transfers heat to the unheated air inside the intake hose 602, thus preheating the air. This improves the utilization rate of heat, saves energy consumption, and enhances the portability of the device.

[0032] A hose rod 604 is fixedly connected to the top of the device box 2, and the intake hose 602 and exhaust hose 603 can be wrapped around the outer wall of the hose rod 604.

[0033] When not in use, the exhaust hose 603 and the intake hose 602 can be wrapped around the outer wall of the hose rod 604 to store the longer exhaust hose 603 and intake hose 602, thereby reducing the storage volume of the device and making it more portable.

[0034] This maintains a constant pressure inside the exhaust hose 603, enhancing the effect of the gas supporting the exhaust hose 603. An exhaust head 607 is fixedly connected to the left end of the exhaust hose 603. A blocking sleeve 609 is fixedly connected inside the exhaust head 607. A pressure plug 608 is movably connected inside the blocking sleeve 609, located to the left of the intake hose 602. A spring 610 is fixedly connected to the left side of the pressure plug 608. The left side of the spring 610 is fixedly connected to the blocking sleeve 609. A connecting sleeve 605 is fixedly connected to the outer wall of the exhaust head 607, and the connecting sleeve 605 is fixedly connected to the outer wall of the intake hose 602.

[0035] After the gas enters the exhaust hose 603 through the vent pipe 401, it gradually fills the exhaust hose 603, causing the internal air pressure to gradually increase until the air pressure pushes open the pressure plug 608, compressing the spring 610 and allowing the air to be discharged to the outside through the exhaust head 607. This prevents excessive pressure inside the exhaust hose 603, thus maintaining a constant pressure inside the exhaust hose 603 and preserving its support structure. During testing, frequently moving the left end of the intake hose 602 can expand the intake range of the intake hose 602, thereby enabling simultaneous detection of the area of ​​contact between the sensor 305 and the air, increasing the accuracy of air detection. A rotating head 611 is movably connected to the left side of the exhaust head 607 via a bearing, and a drive blade 612 is fixedly connected to the inner wall of the rotating head 611.

[0036] Air is discharged into the exhaust head 607 and can be discharged through the opening on the rotating head 611. At the same time, the airflow will further drive the rotating head 611 to rotate by pushing the drive blade 612. When the rotating head 611 is discharging air, the gas is discharged. According to the law of conservation of momentum, the rotating head 611 will be subjected to a reaction force. Due to the constantly changing exhaust direction of the rotating head 611, the direction of the reaction force is constantly changing, which causes the left end of the exhaust hose 603 to sway. The exhaust hose 603 can drive the left end of the intake hose 602 to sway through the connecting sleeve 605, thereby increasing the air intake range of the intake hose 602.

[0037] 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 portable toxic and harmful gas detection and early warning device, comprising a wristband (1), characterized in that: The wristband (1) is fixedly connected to a device box (2) at the top, a buckle (5) is fixedly connected to the bottom of the wristband (1), a detection mechanism (3) is fixedly connected inside the device box (2), a ventilation mechanism (4) is fixedly connected inside the device box (2), and an extension mechanism (6) is fixedly connected to the top of the device box (2). Testing institutions (3) include: The processor (301) is fixedly connected inside the device box (2); A detection sensor (305) is disposed inside the device box (2) and is electrically connected to the processor (301); The ventilation mechanism (4) includes: Ventilation tube (401) is fixedly connected inside the device box (2), and detection sensor (305) is located inside the ventilation tube (401).

2. The portable toxic and harmful gas detection and early warning device according to claim 1, characterized in that: A buzzer (303) is fixedly connected to the left side of the device box (2), and the buzzer (303) is electrically connected to the processor (301). An indicator light (304) is fixedly connected to the left side of the device box (2), and the indicator light (304) is electrically connected to the processor (301). A storage battery (302) is fixedly connected inside the device box (2), and the storage battery (302) is electrically connected to the processor (301).

3. The portable toxic and harmful gas detection and early warning device according to claim 2, characterized in that: The wristband (1) is fixedly connected to a first connecting cover (402) on the back, and the first connecting cover (402) is connected to a vent pipe (401). The vent pipe (401) is fixedly connected to a second connecting cover (403) on the front, and the second connecting cover (403) is connected to the vent pipe (401). The second connecting cover (403) is fixedly connected to an exhaust pipe (404) on the back. The first connecting cover (402) is fixedly connected to an air inlet pipe (406) on the front. The first connecting cover (402) is fixedly connected to a drive motor (405) on the back. The drive motor (405) has a spiral blade (408) fixedly connected inside the air inlet pipe (406) on the front of its output shaft.

4. The portable toxic and harmful gas detection and early warning device according to claim 3, characterized in that: An electric heater (407) is fixedly connected to the outer wall of the air inlet pipe (406), and a sweeping blade (409) is movably connected inside the air vent pipe (401).

5. A portable toxic and harmful gas detection and early warning device according to claim 3, characterized in that: The extension mechanism (6) includes a connecting block (601), which is fixedly connected to the top of the device box (2). The device box (2) is connected to the exhaust pipe (404) and the intake pipe (406) respectively. An intake hose (602) is fixedly connected to the left side of the connecting block (601). The intake hose (602) is connected to the intake pipe (406) through the connecting block (601). An exhaust hose (603) is fixedly connected to the left side of the connecting block (601). The exhaust hose (603) is connected to the exhaust pipe (404) through the connecting block (601). A heat-conducting metal strip (606) is fixedly connected to the outer wall of the exhaust hose (603), and the heat-conducting metal strip (606) is fixedly connected to the outer wall of the intake hose (602).

6. A portable toxic and harmful gas detection and early warning device according to claim 5, characterized in that: The device box (2) is fixedly connected to the top of the pipe rod (604), and the air intake hose (602) and the exhaust hose (603) can be wrapped around the outer wall of the pipe rod (604).

7. A portable toxic and harmful gas detection and early warning device according to claim 5, characterized in that: An exhaust head (607) is fixedly connected to the left end of the exhaust hose (603). A blocking sleeve (609) is fixedly connected inside the exhaust head (607). A pressure plug (608) is movably connected inside the blocking sleeve (609) to the left side of the intake hose (602). A spring (610) is fixedly connected to the left side of the pressure plug (608). The left side of the spring (610) is fixedly connected to the blocking sleeve (609). A connecting sleeve (605) is fixedly connected to the outer wall of the exhaust head (607). The connecting sleeve (605) is fixedly connected to the outer wall of the intake hose (602).

8. A portable toxic and harmful gas detection and early warning device according to claim 7, characterized in that: The left side of the exhaust head (607) is movably connected to a rotating head (611) via a bearing, and a drive blade (612) is fixedly connected to the inner wall of the rotating head (611).

Images