Carbon dioxide concentration monitoring device

Abstract

The utility model discloses a carbon dioxide concentration monitoring device which comprises an L-shaped fixing plate, the inner wall of the left side of the L-shaped fixing plate is fixedly connected with a cylinder, the right side of the cylinder is of a plugging structure, the left side of the top of the cylinder is fixedly provided with a carbon dioxide concentration instrument, and the detection end of the carbon dioxide concentration instrument extends into the cylinder; the left side of the L-shaped fixing plate is fixedly connected with an annular plate, and a circular filter plate is rotationally sleeved with the annular plate; and a reciprocating drawing and pushing rotary driving assembly is mounted in the cylinder. According to the utility model, a series of structures are arranged, so that external gas can be conveniently sucked to filter solid impurities, the carbon dioxide concentration of the gas after impurity filtering is accurately monitored through the carbon dioxide concentration instrument, and the circular filter plate can be conveniently, automatically and comprehensively cleaned and dredged in real time in a long-time monitoring process; the air inlet monitoring work is prevented from being affected by air impermeability caused by impurity blockage, long-term and stable operation of the monitoring work is guaranteed, and an alarm is automatically given to remind personnel when the carbon dioxide concentration is high.

Description

Technical Field

[0001] This utility model relates to the field of carbon dioxide concentration monitoring technology, specifically a carbon dioxide concentration monitoring device. Background Technology

[0002] Carbon dioxide concentration can be monitored using specific sensors or instruments. Carbon dioxide is a common compound in the air, a colorless and odorless gas at room temperature. When its concentration in the air exceeds the normal level by 0.03%, it can deepen and accelerate breathing; at 1%, it can increase the respiratory volume of a normal person by 25%; and at 3%, it can double the respiratory volume. However, when the concentration reaches 25%, it can paralyze the respiratory center and cause acidosis, so the inhaled concentration should not exceed 10%. Monitoring atmospheric carbon dioxide concentration is extremely important in the following environments, such as construction sites like mines.

[0003] According to a novelty search report, CN220730146U discloses an atmospheric carbon dioxide concentration monitoring device, including a base. The device is characterized by: a circular turntable rotatably mounted on the base; a housing fixedly mounted on the turntable; a drive motor fixedly mounted on the turntable on one side of the housing; a drive shaft extending into the housing and rotatably connected to it; a gas collecting pipe at the end of the housing away from the drive motor; a filter device fixedly connected to the end of the gas collecting pipe extending into the housing; an extraction cylinder communicating with the filter device inside the housing; and a carbon dioxide concentration meter fixedly mounted on one side of the extraction cylinder. This device can accurately monitor the atmospheric carbon dioxide concentration in a specific area.

[0004] The above-mentioned technology achieves accurate monitoring of carbon dioxide concentration by extracting external gas, filtering solid impurities from the gas using a filtration device, and detecting the filtered gas using a carbon dioxide concentration meter. However, it has the following shortcomings in use: 1. (During long-term filtration and monitoring, solid impurities inevitably accumulate and clog the filtration device, especially when used in harsh environments such as mines, which can easily lead to poor or blocked airflow). It cannot automatically and in real-time clear the filtration device during filtration and monitoring, making it difficult to ensure the long-term stability of the monitoring work. In view of this, this application proposes a carbon dioxide concentration monitoring device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a carbon dioxide concentration monitoring device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a carbon dioxide concentration monitoring device, comprising an L-shaped fixing plate, a cylinder with a sealing structure on the right side fixedly connected to the inner wall of the left side of the L-shaped fixing plate, a carbon dioxide concentration meter fixedly installed on the top left side of the cylinder, the detection end of the carbon dioxide concentration meter extending into the cylinder, an annular plate fixedly connected to the left side of the L-shaped fixing plate, and a circular filter plate rotatably sleeved inside the annular plate.

[0007] A reciprocating rotary drive assembly is installed inside the cylinder. The left end of the reciprocating rotary drive assembly extends into the annular plate and is fixedly connected to the center of the right side of the circular filter plate. A drive motor with an output shaft fixedly connected to the reciprocating rotary drive assembly is fixedly installed on the right side of the cylinder. A one-way air intake assembly that is in movable contact with the upper right side of the circular filter plate is embedded and fixed on the left side of the L-shaped fixed plate. The right side of the one-way air intake assembly extends into the cylinder. A one-way exhaust cleaning assembly that mates with the lower right side of the circular filter plate is fixedly connected to the bottom left side of the L-shaped fixed plate. The right side of the one-way exhaust cleaning assembly extends into the cylinder. The reciprocating rotary drive assembly is used to reciprocate inside the cylinder when the drive motor starts. The system simultaneously draws in and pushes in air, driving the circular filter plate to rotate. The one-way air intake assembly draws in external gas through the upper part of the circular filter plate when the cylinder is being evacuated. The circular filter plate filters and intercepts solid impurities in the incoming gas. The carbon dioxide concentration meter detects the carbon dioxide concentration of the gas entering the cylinder in real time. The one-way exhaust and purging assembly discharges gas in one direction when the cylinder is being pushed in, and then backflushs and cleans the lower part of the circular filter plate. By using the rotation of the circular filter plate in conjunction with continuous backflush cleaning of its lower part, the system achieves the effect of automatic cleaning and unclogging of the circular filter plate during long-term monitoring, preventing it from being blocked by impurities and affecting the air intake monitoring work.

[0008] Preferably, the reciprocating push-rotary drive assembly includes a piston that is sealed and slidably sleeved inside a cylinder. Two T-shaped guide rods are fixedly connected to the right side of the piston, and the cylinder is slidably sleeved on the two T-shaped guide rods. A reciprocating threaded sleeve is embedded and fixed to the left side of the piston. A reciprocating screw is threaded inside the reciprocating threaded sleeve. The right end of the reciprocating screw is fixedly connected to the left end of the output shaft of the drive motor. A linkage shaft is fixedly connected to the left end of the reciprocating screw. The left end of the linkage shaft is fixedly connected to the middle of the right side of the circular filter plate. An L-shaped fixed plate is sealed and rotatably sleeved on the linkage shaft.

[0009] Preferably, the one-way air intake assembly includes an air intake hood that is embedded and fixed on the left side of the L-shaped fixed plate. The left side of the air intake hood is in movable contact with the upper right side of the circular filter plate. The right end of the air intake hood extends into the cylinder and is fixedly connected to a first one-way valve with the right side as the outlet. The air intake hood is located above the linkage shaft.

[0010] Preferably, the one-way exhaust cleaning assembly includes a backflush box fixedly connected to the bottom left side of the L-shaped fixed plate. Multiple backflush pipes are fixedly connected to the left side of the backflush box. The backflush pipes cooperate with the lower right side of the circular filter plate. The backflush box is located below the linkage shaft. A second one-way valve with an outlet on the left side is fixedly connected to the right side of the backflush box. An exhaust hood located inside the cylinder is fixedly connected to the right side of the second one-way valve.

[0011] Preferably, an L-shaped slag guide plate that is inclined downwards is fixedly connected to the middle of the left side of the annular plate.

[0012] Preferably, the L-shaped fixing plate has four rectangular mounting holes on its top inner wall, and a vent hole is provided on the bottom right side of the cylinder.

[0013] Preferably, a controller is fixedly and electrically connected to the top of the carbon dioxide concentration meter, an audible and visual alarm is fixedly and electrically connected to the right side of the controller, a storage battery is fixedly connected to the top of the cylinder, and the carbon dioxide concentration meter, controller, audible and visual alarm and drive motor are all electrically connected to the storage battery.

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

[0015] 1. Through the coordinated design of the L-shaped fixed plate, cylinder, circular filter plate, carbon dioxide concentration meter, drive motor, reciprocating suction and push rotary drive assembly, one-way air intake assembly, and one-way exhaust and purging assembly, it can continuously extract and discharge external gas. When extracting external gas, the circular filter plate can filter solid impurities, and the carbon dioxide concentration meter can accurately monitor the carbon dioxide concentration of the gas after filtering impurities, preventing excessive solid impurities from affecting the accuracy of monitoring. Furthermore, it can drive the circular filter plate to rotate in one piece during gas extraction and discharge, and use the discharged gas to backflush and clean the rotating circular filter plate on the lower right side. This achieves the effect of automatic real-time comprehensive cleaning and unblocking of the circular filter plate during long-term monitoring, preventing it from being blocked by impurities and affecting the air intake monitoring work, and ensuring the long-term stable operation of the monitoring work.

[0016] 2. By combining the carbon dioxide concentration meter, controller, and audible and visual alarm, the device can automatically alert personnel when the carbon dioxide concentration is high, allowing them to take timely action.

[0017] This utility model features a series of structures that facilitate the extraction and filtration of solid impurities from external gas. A carbon dioxide concentration meter is used to accurately monitor the carbon dioxide concentration in the filtered gas. During long-term monitoring, the circular filter plate is automatically and continuously cleaned and unblocked in real time to prevent it from being clogged by impurities, which would affect the air intake monitoring work and ensure the long-term stable operation of the monitoring work. It also automatically alarms to remind personnel when the carbon dioxide concentration is high. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a carbon dioxide concentration monitoring device proposed in this utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of a carbon dioxide concentration monitoring device proposed in this utility model;

[0020] Figure 3 This is a left-side view of the connecting component between the annular plate and the circular filter plate of a carbon dioxide concentration monitoring device proposed in this utility model.

[0021] In the diagram: 1. L-shaped fixed plate; 2. Cylinder; 3. Carbon dioxide concentration meter; 4. Annular plate; 5. Circular filter plate; 6. Air inlet hood; 7. First one-way valve; 8. Piston; 9. Reciprocating screw; 10. Reciprocating sleeve; 11. Linkage shaft; 12. Drive motor; 13. Second one-way valve; 14. Backflush box; 15. Backflush pipe head; 16. L-shaped guide plate; 17. T-shaped guide rod. 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] like Figures 1 to 3 As shown, this embodiment proposes a carbon dioxide concentration monitoring device, including an L-shaped fixing plate 1. A cylinder 2 with a sealing structure on the right side is fixedly connected to the inner left side of the L-shaped fixing plate 1. A carbon dioxide concentration meter 3 is fixedly installed on the top left side of the cylinder 2, and the detection end of the carbon dioxide concentration meter 3 extends into the cylinder 2. An annular plate 4 is fixedly connected to the left side of the L-shaped fixing plate 1. A circular filter plate 5 is rotatably sleeved inside the annular plate 4. A first bearing is fixedly sleeved inside the annular plate 4, and the inner ring of the first bearing is fixedly fitted to the outer side of the circular filter plate 5, thereby enabling the circular filter plate 5 to be rotated and installed. The L-shaped fixing plate 1 has four rectangular mounting holes on its top inner wall. The bottom right side of the cylinder 2 has a vent hole. The top of the carbon dioxide concentration meter 3 is fixed and electrically connected to a controller. The right side of the controller is fixed and electrically connected to an audible and visual alarm. The controller, audible and visual alarm and carbon dioxide concentration meter 3 work together to detect the carbon dioxide concentration and transmit the concentration value to the controller. When the concentration value is higher than the preset value, the controller controls the audible and visual alarm to be turned on to remind people. This makes it convenient to automatically remind people when the carbon dioxide concentration is high.

[0024] A reciprocating rotary drive assembly is installed inside the cylinder 2. The left end of the reciprocating rotary drive assembly extends into the annular plate 4 and is fixedly connected to the center of the right side of the circular filter plate 5. A drive motor 12 with an output shaft fixedly connected to the reciprocating rotary drive assembly is fixedly installed on the right side of the cylinder 2. A one-way air intake assembly that is in movable contact with the upper right side of the circular filter plate 5 is embedded and fixed on the left side of the L-shaped fixed plate 1. The right side of the one-way air intake assembly extends into the cylinder 2. A one-way exhaust cleaning assembly that cooperates with the lower right side of the circular filter plate 5 is fixedly connected to the bottom left side of the L-shaped fixed plate 1. The right side of the one-way exhaust cleaning assembly extends into the cylinder 2. An L-shaped slag guide plate 16 that is inclined downwards is fixedly connected to the center of the left side of the annular plate 4. A battery is fixedly connected to the top of the cylinder 2. The carbon dioxide concentration meter 3, controller, audible and visual alarm, and drive motor 12 are all electrically connected to the battery. The reciprocating rotary drive assembly is used to... When the drive motor 12 starts, it reciprocates to draw and push air into the cylinder 2, and simultaneously drives the circular filter plate 5 to rotate. The one-way air intake component is used to draw in external gas through the upper part of the circular filter plate 5 when air is drawn into the cylinder 2. The circular filter plate 5 is used to filter and intercept solid impurities in the incoming gas. The carbon dioxide concentration meter 3 is used to detect the carbon dioxide concentration of the gas entering the cylinder 2 in real time. The one-way exhaust cleaning component is used to discharge gas in one direction when air is pushed into the cylinder 2, and then switch to backflushing and cleaning the lower part of the circular filter plate 5. By using the rotation of the circular filter plate 5 in conjunction with continuous backflushing and cleaning of its lower part, the effect of automatic cleaning and unblocking of the circular filter plate 5 is achieved in long-term monitoring, preventing it from being blocked by impurities and affecting the air intake monitoring work. The L-shaped slag guide plate 16 is used to guide the solid impurities discharged by backflushing and cleaning downwards, reducing the phenomenon of the discharged impurities being drawn in again.

[0025] Specifically, the reciprocating rotary drive assembly includes a piston 8 that is slidably fitted inside a cylinder 2. A sealing ring is bonded to the outer side of the piston 8, and the outer side of the sealing ring is tightly fitted against the inner wall of the cylinder 2, providing a sliding seal between the outer side of the piston 8 and the inner side of the cylinder 2. Two T-shaped guide rods 17 are fixedly connected to the right side of the piston 8, and the cylinder 2 is slidably fitted onto the two T-shaped guide rods 17. Two transverse guide holes are provided on the inner wall of the right side of the cylinder 2, respectively slidingly fitted onto the outer side of the corresponding T-shaped guide rods 17, providing lateral sliding guidance for the T-shaped guide rods 17. A reciprocating threaded sleeve 10 is embedded and fixedly installed on the left side of the piston 8. An embedded through hole is provided on the left side of the piston 8 to be fixedly connected to the outer side of the reciprocating threaded sleeve 10. A reciprocating screw 9 is threaded onto the inner thread of the reciprocating threaded sleeve 10. The right end of the reciprocating screw 9 is fixedly connected to the left end of the output shaft of the drive motor 12. The left end of the reciprocating screw 9 is fixedly connected to the linkage shaft 11. The left end of the linkage shaft 11 is fixedly connected to the middle of the right side of the circular filter plate 5. The L-shaped fixing plate 1 is sealed and rotated on the linkage shaft 11. The piston 8, T-shaped guide rod 17, reciprocating sleeve 10, reciprocating screw 9 and linkage shaft 11 are configured to cooperate. The drive motor 12 drives the reciprocating screw 9 to rotate. The rotation of the reciprocating screw 9 drives the reciprocating sleeve 10 to move back and forth to the right and left. The reciprocating sleeve 10 drives the piston 8 to slide back and forth to the right and left inside the cylinder 2. The piston 8, which slides back and forth to the right and left, realizes the reciprocating suction and push work inside the cylinder 2. When the reciprocating screw 9 rotates, it also drives the linkage shaft 11 to rotate. The rotating linkage shaft 11 drives the circular filter plate 5 to rotate.

[0026] Furthermore, the one-way air intake assembly includes an air intake hood 6 embedded and fixed on the left side of the L-shaped fixing plate 1. The left side of the L-shaped fixing plate 1 has an insertion hole that is fixedly connected to the outside of the air intake hood 6. The left side of the air intake hood 6 is in movable contact with the upper right side of the circular filter plate 5. The right end of the air intake hood 6 extends into the cylinder 2 and is fixedly connected to a first one-way valve 7 with the right side as the outlet. The air intake hood 6 is located above the linkage shaft 11. The air intake hood 6 and the first one-way valve 7 cooperate to draw air from inside the cylinder 2. When air is drawn from inside the cylinder 2, the suction force sequentially draws air from the upper part of the circular filter plate 5 through the first one-way valve 7 and the air intake hood 6, so that the external gas is filtered by the upper part of the circular filter plate 5 and then drawn into the cylinder 2, preventing the high content of solid impurities from affecting the accuracy of carbon dioxide concentration detection.

[0027] Furthermore, the one-way exhaust cleaning assembly includes a backflush box 14 fixedly connected to the bottom left side of the L-shaped fixed plate 1. Multiple backflush pipe heads 15 are fixedly connected to the left side of the backflush box 14. The backflush pipe heads 15 cooperate with the lower right side of the circular filter plate 5. The backflush box 14 is located below the linkage shaft 11. A second one-way valve 13 with its left side as the outlet is fixedly connected to the right side of the backflush box 14. An exhaust hood located inside the cylinder 2 is fixedly connected to the right side of the second one-way valve 13. A circular through hole fixedly connected to the outside of the exhaust hood is opened at the bottom left side of the L-shaped fixed plate 1. When the backflush box 14, backflush pipe heads 15, second one-way valve 13 and exhaust hood are arranged in cooperation, when the gas is pushed inside the cylinder 2, under the pushing and squeezing force, the gas is discharged one-way into the backflush box 14 through the exhaust hood and second one-way valve 13 in sequence, and then blown out through the multiple backflush pipe heads 15 to perform backflush cleaning and unblocking work on the lower part of the circular filter plate 5.

[0028] The usage method of this embodiment is as follows: During use, the drive motor 12 is started, driving the reciprocating screw 9 to rotate. The rotation of the reciprocating screw 9 causes the reciprocating sleeve 10 to move reciprocally to the right and left. The reciprocating sleeve 10 causes the piston 8 to slide reciprocally to the right and left inside the cylinder 2. The piston 8 causes the two T-shaped guide rods 17 to move reciprocally to the right and left. The piston 8 performs reciprocating suction and push operations on the inside of the cylinder 2. When the reciprocating screw 9 rotates, it also drives the linkage shaft 11 to rotate. The linkage shaft 11 drives the circular filter plate 5 to rotate. During suction inside the cylinder 2, the suction force sequentially passes through the first one-way valve 7 and the air inlet hood 6 to draw air from the upper part of the circular filter plate 5, ensuring that external gas is filtered by the upper part of the circular filter plate 5 before being drawn into the cylinder 2. This prevents excessive solid impurities from affecting the accuracy of carbon dioxide concentration detection. The carbon dioxide concentration meter 3 detects the carbon dioxide concentration in real time to achieve the carbon dioxide concentration monitoring work. When the gas is pushed inside the cylinder 2, under the pushing and squeezing force, the gas is discharged into the backflush box 14 in one direction through the exhaust hood and the second one-way valve 13, and then blown out through multiple backflush pipe heads 15 to backflush and clean the lower part of the circular filter plate 5. The circular filter plate 5 is rotated to continuously backflush and clean its lower part, so as to achieve the effect of fully cleaning and unblocking the circular filter plate 5 in real time during long-term monitoring work, preventing it from being blocked by impurities and affecting the air intake monitoring work, and ensuring the long-term stable operation of the monitoring work. The L-shaped slag guide plate 16 is used to guide the solid impurities discharged from the backflush cleaning downward, reducing the phenomenon of the discharged impurities being extracted again.

[0029] The carbon dioxide concentration meter 3 detects the carbon dioxide concentration and transmits the concentration value to the controller. When the concentration value is higher than the preset value, the controller activates the audible and visual alarm to provide an alarm reminder, which is convenient for automatically alerting personnel when the carbon dioxide concentration is high.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A carbon dioxide concentration monitoring device, comprising an L-shaped fixing plate (1), characterized in that: The L-shaped fixing plate (1) has a cylindrical cylinder (2) with a sealing structure on the right side fixedly connected to the inner wall on the left side. A carbon dioxide concentration meter (3) is fixedly installed on the top left side of the cylindrical cylinder (2). The detection end of the carbon dioxide concentration meter (3) extends into the cylindrical cylinder (2). An annular plate (4) is fixedly connected to the left side of the L-shaped fixing plate (1). A circular filter plate (5) is rotatably sleeved inside the annular plate (4). The cylinder (2) is equipped with a reciprocating rotary drive assembly. The left end of the reciprocating rotary drive assembly extends into the annular plate (4) and is fixedly connected to the center of the right side of the circular filter plate (5). The right side of the cylinder (2) is fixedly equipped with a drive motor (12) whose output shaft is fixedly connected to the reciprocating rotary drive assembly. The left side of the L-shaped fixed plate (1) is fitted with a one-way air intake assembly that is in movable contact with the upper right side of the circular filter plate (5). The right side of the one-way air intake assembly extends into the cylinder (2). The bottom left side of the L-shaped fixed plate (1) is fixedly connected with a one-way exhaust cleaning assembly that cooperates with the lower right side of the circular filter plate (5). The right side of the one-way exhaust cleaning assembly extends into the cylinder (2).

2. The carbon dioxide concentration monitoring device according to claim 1, characterized in that: The reciprocating push-rotary drive assembly includes a piston (8) that is sealed and slidably sleeved inside a cylinder (2). Two T-shaped guide rods (17) are fixedly connected to the right side of the piston (8). The cylinder (2) is slidably sleeved on the two T-shaped guide rods (17). A reciprocating threaded sleeve (10) is embedded and fixed on the left side of the piston (8). A reciprocating screw (9) is threaded inside the reciprocating threaded sleeve (10). The right end of the reciprocating screw (9) is fixedly connected to the left end of the output shaft of the drive motor (12). A linkage shaft (11) is fixedly connected to the left end of the reciprocating screw (9). The left end of the linkage shaft (11) is fixedly connected to the middle of the right side of the circular filter plate (5). An L-shaped fixed plate (1) is sealed and rotatably sleeved on the linkage shaft (11).

3. The carbon dioxide concentration monitoring device according to claim 2, characterized in that: The one-way air intake assembly includes an air intake hood (6) that is embedded and fixed on the left side of the L-shaped fixed plate (1). The left side of the air intake hood (6) is in contact with the upper right side of the circular filter plate (5). The right end of the air intake hood (6) extends into the cylinder (2) and is fixedly connected to a first one-way valve (7) with the right side as the outlet. The air intake hood (6) is located above the linkage shaft (11).

4. The carbon dioxide concentration monitoring device according to claim 2, characterized in that: The one-way exhaust cleaning assembly includes a backflush box (14) fixedly connected to the bottom left side of the L-shaped fixed plate (1). Multiple backflush pipe heads (15) are fixedly connected to the left side of the backflush box (14). The backflush pipe heads (15) cooperate with the lower right side of the circular filter plate (5). The backflush box (14) is located below the linkage shaft (11). A second one-way valve (13) with the left side as the outlet is fixedly connected to the right side of the backflush box (14). An exhaust hood located inside the cylinder (2) is fixedly connected to the right side of the second one-way valve (13).

5. A carbon dioxide concentration monitoring device according to claim 1, characterized in that: An L-shaped guide plate (16) with a downward inclination is fixedly connected to the middle of the left side of the annular plate (4).

6. The carbon dioxide concentration monitoring device according to claim 1, characterized in that: The L-shaped fixing plate (1) has four rectangular mounting holes on its top inner wall, and the cylinder (2) has a ventilation hole on its bottom right side.

7. A carbon dioxide concentration monitoring device according to claim 1, characterized in that: The top of the carbon dioxide concentration meter (3) is fixed and electrically connected to a controller, the right side of the controller is fixed and electrically connected to an audible and visual alarm, the top of the cylinder (2) is fixed and connected to a storage battery, and the carbon dioxide concentration meter (3), controller, audible and visual alarm and drive motor (12) are all electrically connected to the storage battery.

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