A nitrogen oxide monitoring analysis device

Abstract

The utility model discloses an analysis device for monitoring nitrogen oxides, specifically relates to the technical field of nitrogen oxide monitoring, including a monitoring box, wherein a detection tube is arranged inside the monitoring box, wherein a connecting pipe is arranged on the top of the monitoring box, wherein a filtering mechanism is arranged inside the connecting pipe, and the filtering mechanism includes a connecting rod arranged inside the connecting pipe, wherein a spring is sleeved on the connecting rod, and a connecting ring is arranged at the bottom of the spring, wherein sliders are arranged on both sides of the connecting ring, wherein a sliding groove is opened inside the connecting pipe, and the connecting ring and the connecting rod are sealed and connected by a sealing rubber ring, wherein two fixed tubes are arranged at the bottom of the connecting ring. The utility model can effectively filter the nitrogen oxide gas after monitoring, thereby reducing the pollution to the air, avoiding the blockage of the inner cavity of the detection tube pipeline, and improving the conversion rate of nitrogen dioxide.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen oxide monitoring, and more specifically, to an analysis device for nitrogen oxide monitoring. Background Art

[0002] Nitrogen oxides refer to compounds composed of only two elements, nitrogen and oxygen. Nitrogen oxides have different degrees of toxicity and need to be monitored. The existing technology uses an air pump to pass the air through a gas collecting pipe, a ventilation support seat, and a gas pipe and finally enters the monitoring barrel. Although the nitrogen oxide gas detector in the monitoring barrel is used to detect the air, when in use, the sampled gas directly enters the nitrogen oxide gas detector in the monitoring barrel through the gas collecting pipe for detection, and more impurity particles in the air will directly enter the monitoring barrel with the sampled gas, affecting the detection result of nitrogen oxides.

[0003] Patent application publication number: CN220455267U A nitrogen oxide monitoring and analysis device, by starting the air pump, the sampled gas is sequentially passed through the dust filter box and the air pipe into the monitoring barrel, the nitrogen oxide gas detector in the monitoring barrel detects the sampled gas, when the sampled gas passes through the dust filter box, the filter plate on the dust filter box has the effect of intercepting the impurity particles, the set electric telescopic rod can drive the needle rod to insert into the through hole, and clear the through hole in time, the set dust filter box can filter certain impurity particles, reduce the influence of impurities on the monitoring and analysis results, and solve the problem that impurities will directly enter the monitoring barrel with the sampled gas and affect the detection results of nitrogen oxides.

[0004] However, when this structure is actually used, after the monitoring and analysis is completed, the gas is finally discharged to the outside of the monitoring box through the exhaust pipe. Since there are still a lot of toxic substances in the gas after the monitoring and analysis, it is directly discharged into the air, which will cause certain pollution to the environment. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides an analysis device for monitoring nitrogen oxides to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An analysis device for monitoring nitrogen oxides, comprising a monitoring box, a detection cylinder is arranged inside the monitoring box, a connecting pipe is arranged on the top of the monitoring box, and a filtering mechanism is arranged inside the connecting pipe;

[0008] The filtering mechanism includes a connecting rod arranged inside a connecting tube, a spring is sleeved on the connecting rod, a connecting ring is arranged at the bottom of the spring, sliders are arranged on both sides of the connecting ring, a sliding groove is opened inside the connecting tube, the connecting ring and the connecting rod are sealed by a sealing rubber ring, two fixed tubes are arranged at the bottom of the connecting ring, and a first filler and a second filler are respectively arranged inside the two fixed tubes.

[0009] By adopting the above technical solution: in order to effectively filter the nitrogen oxide gas after monitoring, thereby reducing air pollution.

[0010] As a further description of the above technical solution: one side of the connecting pipe is connected to a fixed door via a hinge, one side of the fixed pipe is connected to a connecting plate via a hinge, one side of the connecting pipe is provided with an air outlet pipe, one side of the air outlet pipe is provided with a solenoid valve, one side of the connecting pipe is provided with an air supply pipe, one end of the air supply pipe passes through the monitoring box and extends into the interior of the monitoring box, and one end of the air supply pipe is connected to the detection cylinder.

[0011] By adopting the above technical solution: in order to facilitate the replacement of the first filler and the second filler, the filtering effect is improved.

[0012] As a further description of the above technical solution: a catalytic mechanism is arranged inside the detection cylinder, and the catalytic mechanism includes a plurality of annular plates arranged inside the detection cylinder, and the plurality of annular plates are arranged in an inclined shape, a protruding block is arranged on one side of the annular plate, and support rods are arranged on both sides of the protruding block, one end of the support rod is connected to the inside of the detection cylinder, the surfaces of the annular plate and the protruding block are provided with a catalyst coating, and a temperature sensor is arranged inside the detection cylinder.

[0013] By adopting the above technical solution: the blockage of the inner cavity of the detection tube pipeline can be avoided and the conversion rate of nitrogen dioxide can be improved.

[0014] As a further description of the above technical solution: a delivery pipe is provided on one side of the detection cylinder, an air pump is provided on one side of the delivery pipe, an air inlet pipe is provided on one side of the air pump, a placement groove is opened inside the monitoring box, a support frame is provided inside the placement groove, a heating plate is provided on the top of the support frame, stabilizing plates are provided on both sides of the support frame, and bolts are provided on the top of the stabilizing plate.

[0015] By adopting the above technical solution, it is convenient to fix the detection tube, thereby improving the practicability of the device.

[0016] Technical effects and advantages of the utility model:

[0017] 1. By setting a filtering mechanism, compared with the prior art, when nitrogen oxide gas enters the inside of the connecting pipe, the first filler inside one of the fixed pipes adsorbs small particles and suspended matter in the nitrogen oxide gas, and then the second filler reacts and absorbs the pollutant gas in the nitrogen oxide gas. When the pressure inside the connecting pipe is too high, the connecting ring moves upward, so that the slider moves in the slide groove and the spring is deformed. When the connecting ring slides to the outlet pipe and is discharged into the air, the gas stays in the connecting pipe for a long time, making the filtration more complete, thereby minimizing the impact on the atmospheric environment.

[0018] 2. By setting up a catalytic mechanism, compared with the prior art, nitrogen oxide gas enters the interior of the detection tube, and then cooperates with the temperature sensor inside the detection tube through the set heating plate. Cobalt trioxide particles are set inside the detection tube, so that the nitrogen dioxide in the gas is converted into nitric oxide by the reaction, so that the nitrogen content in the polluted gas can be monitored more accurately and quickly. The coating-type catalysis can effectively avoid blockage in the inner cavity of the pipeline, and the annular plate can make the gas flow in a converging manner, while the raised block can make the gas flow in a diffuse manner, allowing the gas to better contact with the catalyst coating, thereby improving the monitoring efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model.

[0021] Figure 3 This is a schematic diagram of the filter mechanism structure of the utility model.

[0022] Figure 4 It is a schematic diagram of the catalytic mechanism structure of the utility model.

[0023] Figure 5 This is a schematic diagram of the support frame structure of the utility model.

[0024] The accompanying drawings are marked as follows: 1. Monitoring box; 2. Detection tube; 3. Connecting pipe; 4. Connecting rod; 5. Spring; 6. Connecting ring; 7. Slider; 8. Fixed pipe; 9. First filler; 10. Second filler; 11. Fixed door; 12. Connecting plate; 13. Air outlet pipe; 14. Solenoid valve; 15. Air supply pipe; 16. Ring plate; 17. Raised block; 18. Support rod; 19. Air pump; 20. Air inlet pipe; 21. Support frame; 22. Heating plate; 23. Stabilizing plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The embodiments of this application disclose Figure 1-5 The analytical device for monitoring nitrogen oxides shown in the figure comprises a monitoring box 1, a detection cylinder 2 is arranged inside the monitoring box 1, a connecting pipe 3 is arranged on the top of the monitoring box 1, and a filtering mechanism is arranged inside the connecting pipe 3;

[0027] The filtering mechanism includes a connecting rod 4 arranged inside the connecting pipe 3, a spring 5 is sleeved on the connecting rod 4, a connecting ring 6 is arranged at the bottom of the spring 5, sliders 7 are arranged on both sides of the connecting ring 6, a slide groove is opened inside the connecting pipe 3, the connecting ring 6 and the connecting rod 4 are sealed and connected by a sealing rubber ring, two fixed pipes 8 are arranged at the bottom of the connecting ring 6, and the first filler 9 and the second filler 10 are arranged inside the two fixed pipes 8 respectively, and enter the connecting pipe 3 through the air supply pipe 15, and then the nitrogen oxide gas enters the connecting pipe 3, and the small particles and suspended matter in the nitrogen oxide gas are adsorbed by the first filler 9 inside one of the fixed pipes 8, the first filler 9 is made of activated carbon, and the pollutant gas in the nitrogen oxide gas is reacted and absorbed by the second filler 10, and the second filler 10 is made of a filter element. When the pressure inside the connecting pipe 3 is too large, the connecting ring 6 moves upward, so that the slider 7 moves in the slide groove and deforms the spring. When the connecting ring 6 slides to the outlet pipe 13 and is discharged into the air, the impact on the atmospheric environment is minimized.

[0028] Reference Figure 3 As shown, one side of the connecting tube 3 is connected to a fixed door 11 through a hinge, one side of the fixed tube 8 is connected to a connecting plate 12 through a hinge, one side of the connecting tube 3 is provided with an air outlet pipe 13, one side of the air outlet pipe 13 is provided with a solenoid valve 14, one side of the connecting tube 3 is provided with an air supply pipe 15, one end of the air supply pipe 15 passes through the monitoring box 1 and extends to the inside of the monitoring box 1, one end of the air supply pipe 15 is connected to the detection tube 2, when the first filler 9 and the second filler 10 need to be replaced for long-term use, the fixed door 11 is directly opened and then the connecting plate 12 is opened, and then the first filler 9 and the second filler 10 are taken out for replacement.

[0029] Reference Figure 4As shown, a catalytic mechanism is provided inside the detection cylinder 2, and the catalytic mechanism includes a plurality of annular plates 16 arranged inside the detection cylinder 2, and the plurality of annular plates 16 are all arranged in an inclined shape. A protruding block 17 is provided on one side of the annular plate 16, and a supporting rod 18 is provided on both sides of the protruding block 17. One end of the supporting rod 18 is connected to the inside of the detection cylinder 2, and the surfaces of the annular plate 16 and the protruding block 17 are both provided with a catalyst coating. A temperature sensor is provided inside the detection cylinder 2. When the nitrogen oxide gas passes through the annular plate 16, since the annular plate 16 is arc-shaped and inclined inward, and the surface of the annular plate 16 is provided with a catalyst coating, and the protruding block 17 is conical, and the surface is also provided with a catalyst coating, the coating-type catalytic coating can effectively avoid the blockage of the inner cavity of the pipeline, and the annular plate 16 can allow the gas to flow in a convergent manner, and the protruding block 17 can allow the gas to flow in a diffuse manner, so that the gas continuously passes through the convergence and diffusion process, so that the gas can better contact with the catalyst coating, thereby improving the conversion rate of nitrogen dioxide and improving work efficiency.

[0030] Reference Figure 5 As shown, a delivery pipe is provided on one side of the detection tube 2, an air pump 19 is provided on one side of the delivery pipe, an air inlet pipe 20 is provided on one side of the air pump 19, a placement slot is provided inside the monitoring box 1, a support frame 21 is provided inside the placement slot, a heating plate 22 is provided on the top of the support frame 21, stabilizing plates 23 are provided on both sides of the support frame 21, and bolts are provided on the top of the stabilizing plate 23 to connect the external nitrogen oxide gas connecting pipe with the air inlet pipe 20, so that the nitrogen oxide gas enters the detection tube 2, and then cooperates with the temperature sensor inside the detection tube 2 through the provided heating plate 22, wherein the model of the temperature sensor is PT100, so that the gas entering the detection tube 2 maintains a certain temperature, and cobalt trioxide particles are provided inside the detection tube 2, so that the nitrogen dioxide in the gas is converted into nitric oxide by the reaction.

[0031] Working principle of the utility model: when the utility model is used, the external nitrogen oxide gas connecting pipe is first connected to the air inlet pipe 20, so that the nitrogen oxide gas enters the detection tube 2, and then the heating plate 22 is arranged to cooperate with the temperature sensor inside the detection tube 2, so that the gas entering the detection tube 2 maintains a certain temperature, and the detection tube 2 is provided with cobalt trioxide particles, so that the nitrogen dioxide in the gas is converted into nitrogen monoxide by the reaction, so that the nitrogen content in the polluted gas can be monitored more accurately and quickly, and then when the nitrogen oxide gas passes through the annular plate 16, because the annular plate 16 is arc-shaped and tilted inward, and the surface of the annular plate 16 is provided with a catalyst coating, and the protrusion block 17 is conical, and the surface is also provided with a catalyst coating, the coating-type catalytic coating can effectively avoid the blockage of the inner cavity of the pipeline, and the annular plate 16 can make the gas flow in a convergent manner, and the protrusion block 17 can make the gas flow in a diffuse manner, so that the gas continuously goes through the gathering and diffusion process, so that the gas can better contact with the catalyst coating, thereby improving the conversion rate of nitrogen dioxide and improving work efficiency;

[0032] At the same time, the nitrogen oxide gas enters the connecting pipe 3 through the air supply pipe 15, and then enters the connecting pipe 3. The small particles and suspended matter in the nitrogen oxide gas are adsorbed by the first filler 9 inside one of the fixed pipes 8. The first filler 9 is made of activated carbon. The pollutant gas in the nitrogen oxide gas is reacted and absorbed by the second filler 10. The second filler 10 is made of a filter element. When the first filler 9 and the second filler 10 need to be replaced after long-term use, the fixed door 11 is directly opened and then the connecting plate 12 is opened. Then the first filler 9 and the second filler 10 are taken out for replacement. When the pressure inside the connecting pipe 3 is too large, the connecting ring 6 moves upward, so that the slider 7 moves in the slide groove and the spring is deformed. When the connecting ring 6 slides to the outlet pipe 13 and is discharged into the air, the impact on the atmospheric environment is minimized.

[0033] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An analytical device for monitoring nitrogen oxides, comprising a monitoring box (1), characterized in that: A detection cylinder (2) is arranged inside the monitoring box (1), a connecting pipe (3) is arranged on the top of the monitoring box (1), and a filtering mechanism is arranged inside the connecting pipe (3); The filtering mechanism comprises a connecting rod (4) arranged inside a connecting tube (3), a spring (5) being sleeved on the connecting rod (4), a connecting ring (6) being arranged at the bottom of the spring (5), sliding blocks (7) being arranged on both sides of the connecting ring (6), a sliding groove being arranged inside the connecting tube (3), the connecting ring (6) and the connecting rod (4) being sealed and connected via a sealing rubber ring, two fixed tubes (8) being arranged at the bottom of the connecting ring (6), a first filler (9) and a second filler (10) being arranged inside the two fixed tubes (8), respectively.

2. The nitrogen oxide monitoring analysis device according to claim 1, characterized in that: One side of the connecting pipe (3) is connected to a fixed door (11) via a hinge, one side of the fixed pipe (8) is connected to a connecting plate (12) via a hinge, one side of the connecting pipe (3) is provided with an air outlet pipe (13), and one side of the air outlet pipe (13) is provided with a solenoid valve (14).

3. The nitrogen oxide monitoring analysis device according to claim 1, characterized in that: An air supply pipe (15) is provided on one side of the connecting pipe (3), one end of the air supply pipe (15) passes through the monitoring box (1) and extends into the interior of the monitoring box (1), and one end of the air supply pipe (15) is connected to the detection cylinder (2).

4. The nitrogen oxide monitoring analysis device according to claim 1, characterized in that: A catalytic mechanism is arranged inside the detection cylinder (2), and the catalytic mechanism comprises a plurality of annular plates (16) arranged inside the detection cylinder (2), and the plurality of annular plates (16) are all arranged in an inclined shape.

5. The nitrogen oxide monitoring analysis device according to claim 4, characterized in that: A protruding block (17) is provided on one side of the annular plate (16), support rods (18) are provided on both sides of the protruding block (17), one end of the support rod (18) is connected to the inside of the detection cylinder (2), the surfaces of the annular plate (16) and the protruding block (17) are provided with a catalyst coating, and a temperature sensor is provided inside the detection cylinder (2).

6. The nitrogen oxide monitoring analysis device according to claim 1, characterized in that: A delivery pipe is provided on one side of the detection cylinder (2), an air pump (19) is provided on one side of the delivery pipe, and an air inlet pipe (20) is provided on one side of the air pump (19).

7. The nitrogen oxide monitoring analysis device according to claim 1, characterized in that: The monitoring box (1) has a placement slot inside, a support frame (21) is arranged inside the placement slot, a heating plate (22) is arranged on the top of the support frame (21), stabilizing plates (23) are arranged on both sides of the support frame (21), and bolts are arranged on the top of the stabilizing plates (23).

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