Incinerator flue gas monitoring device

Abstract

The utility model discloses an incinerator flue gas monitoring device which comprises a conveying pipeline, one end of the conveying pipeline extends into a flue gas pipeline, the other end of the conveying pipeline is connected with a detection mechanism, a pipe wall scraping mechanism is arranged on the conveying pipeline and comprises a dust scraping fan, the dust scraping fan is located in the conveying pipeline, and the detection mechanism is connected with the conveying pipeline. The ends of fan blades of the dust scraping fan make contact with the inner wall of the conveying pipeline, the dust scraping fan is connected with a rotation driving mechanism and a translation driving mechanism, the rotation driving mechanism drives the dust scraping fan to rotate, the translation driving mechanism drives the dust scraping fan to move in the axis direction of the conveying pipeline, and the rotation driving mechanism is located on the translation driving mechanism. And dust on the conveying pipeline is scraped, so that the detection precision of the detection mechanism on the flue gas is prevented from being influenced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of monitoring equipment, more particularly to a kind of incinerator flue gas monitoring device. BACKGROUND

[0002] Incinerator needs to detect the flue gas generated during incineration, generally a flue gas collection pipe is inserted into the incinerator or the flue gas duct of the incinerator, the flue gas is automatically sucked into the collection pipe by pressure difference, and the flue gas is sent to the detection equipment for detection through the collection pipe.

[0003] For example, the invention with publication number CN113281471A discloses a flue gas monitoring system for incinerator with on-line detection and maintenance, which transports flue gas through a conveying mechanism.

[0004] However, when flue gas passes through the pipeline of the conveying mechanism, dust particles such as smoke particles and easily precipitated substances will be adsorbed on the inner wall of the pipeline. These substances themselves also emit gas, which over a long period of time reduces the channel space and affects the original flue gas gas concentration parameters, thereby reducing the detection accuracy of the detection mechanism. SUMMARY

[0005] To overcome the shortcomings of the prior art, the utility model provides an incinerator flue gas monitoring device, which is provided with a scraping device in the conveying pipeline to scrape dust on the conveying pipeline and avoid affecting the detection accuracy of the detection mechanism.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an incinerator flue gas monitoring device, comprising a conveying pipeline, one end of the conveying pipeline extends into a flue gas duct, and the other end is connected to a detection mechanism, a pipe wall scraping mechanism is arranged on the conveying pipeline, the pipe wall scraping mechanism comprises a dust scraping fan, the dust scraping fan is located in the conveying pipeline, and the fan blade end of the dust scraping fan is in contact with the inner wall of the conveying pipeline, a rotary drive mechanism and a translation drive mechanism are connected to the dust scraping fan, the rotary drive mechanism drives the dust scraping fan to rotate, the translation drive mechanism drives the dust scraping fan to move along the axis direction of the conveying pipeline, and the rotary drive mechanism is located on the translation drive mechanism.

[0007] Further, the translation drive mechanism comprises a fixed support, a support frame is slidably connected to the fixed support, the rotary drive mechanism is located on the support frame, a first motor is arranged on the fixed support, a lead screw is connected to the first motor, the lead screw is rotatably connected to the fixed support, a nut is arranged on the support frame, and the nut is threadedly connected to the lead screw.

[0008] Further, the rotary drive mechanism comprises a second motor, and the main shaft of the second motor is connected to the dust scraping fan through a rotating rod.

[0009] Furthermore, a guide rod is provided on the fixed bracket, and the support frame is slidably connected to the guide rod.

[0010] Furthermore, a placement cavity is provided inside the conveying pipe, and a sealing valve is provided between the placement cavity and the conveying pipe. A drive device is connected to the sealing valve, and the dust scraper is located inside the placement cavity.

[0011] Furthermore, the conveying pipe is provided with a dust discharge port, which is located between the detection mechanism and the pipe wall scraping mechanism, and the dust discharge port is provided with a detachable sealing door.

[0012] Furthermore, the conveying pipeline includes multiple conveying sections with axes perpendicular or parallel to each other, and each conveying section is equipped with a pipe wall scraping mechanism.

[0013] Compared with the prior art, the beneficial effects of this utility model are: when scraping the dust on the conveying pipe, the dust scraper fan rotates, and the translation drive mechanism drives the dust scraper fan to scrape the dust on the pipe wall along the axial direction of the conveying pipe, thereby avoiding the dust adsorbed on the pipe wall from affecting the detection accuracy of the detection mechanism for flue gas. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the incinerator flue gas monitoring device of this utility model;

[0015] Figure 2 This is a schematic diagram of the pipe wall scraping mechanism in the incinerator flue gas monitoring device of this utility model;

[0016] Figure 3 This is a schematic diagram of the pipe wall scraping mechanism in the dust removal state of the incinerator flue gas monitoring device of this utility model.

[0017] Reference numerals: 1. Conveying pipe; 2. Flue gas pipe; 3. Detection mechanism; 4. Dust scraper; 5. Fixed bracket; 6. Support frame; 7. First motor; 8. Lead screw; 9. Lead screw nut; 10. Second motor; 11. Guide rod; 12. Placement cavity; 13. Sealing valve; 14. Dust outlet; 15. Sealing door; 16. Cylinder; 17. Rotating rod. Detailed Implementation

[0018] In the description of the utility model, it is necessary to explain that, for the direction words, if the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the utility model.

[0019] In addition, if the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the "first", "second" features can be explicitly or implicitly included one or more features, and in the description of the utility model, the meaning of "several", "several" is two or more than two, unless otherwise explicitly specified.

[0020] Referring to Figures 1 to 3 Further illustrate the utility model.

[0021] Embodiment one:

[0022] A kind of incinerator flue gas monitoring device, including conveying pipeline 1, one end of the conveying pipeline 1 extends into flue gas duct 2, other end is connected detection mechanism 3, pipe wall scraping mechanism is arranged on the conveying pipeline 1, the pipe wall scraping mechanism includes dust scraping fan 4, the dust scraping fan 4 is located in conveying pipeline 1, and the blade end of dust scraping fan 4 is in contact with the inner wall of conveying pipeline 1, rotating drive mechanism and translation drive mechanism are connected on the dust scraping fan 4, rotating drive mechanism drives dust scraping fan 4 to rotate, translation drive mechanism drives dust scraping fan 4 to move along the axis direction of conveying pipeline 1, and rotating drive mechanism is located on translation drive mechanism.

[0023] As Figure 2 Shown in the present example, preferably, the translation drive mechanism includes fixed support 5, support frame 6 is slidably connected on the fixed support 5, the rotating drive mechanism is located on support frame 6, first motor 7 is arranged on the fixed support 5, lead screw 8 is connected on the first motor 7, the lead screw 8 is rotatably connected with fixed support 5, nut 9 is arranged on the support frame 6, the nut 9 is threadedly connected with lead screw 8.

[0024] As Figure 2 Shown in the present example, preferably, the rotating drive mechanism includes second motor 10, the main shaft of the second motor 10 is connected with dust scraping fan 4 through rotating rod 17.

[0025] As Figure 2 shown in the preferred embodiment of the present example, the fixed support 5 is provided with a guide rod 11, and the support frame 6 is in sliding connection with the guide rod 11.

[0026] As Figure 2 shown in the preferred embodiment of the present example, the conveying pipeline 1 is provided with a placement cavity 12, and a sealing valve 13 is arranged between the placement cavity 12 and the conveying pipeline 1. The sealing valve 13 is connected with a driving device, and the dust scraping fan 4 is located in the placement cavity 12.

[0027] As Figure 2 and Figure 3 shown, specifically, the driving device is a pneumatic cylinder 16, and the piston rod of the pneumatic cylinder 16 is connected with the sealing valve 13.

[0028] As Figure 1 shown in the preferred embodiment of the present example, the conveying pipeline 1 is provided with a dust discharge port 14, which is located between the detection mechanism 3 and the pipeline wall scraping mechanism. The dust discharge port 14 is provided with a detachable sealing door 15.

[0029] As Figure 1 shown in the preferred embodiment of the present example, the conveying pipeline 1 includes multiple conveying sections with axes perpendicular or parallel to each other, and each conveying section is provided with a pipeline wall scraping mechanism.

[0030] As Figures 1 to 3 shown, the flue gas in the flue gas pipeline 2 is conveyed to the detection mechanism 3 through the conveying pipeline 1 for detection. When the pipeline wall of the conveying pipeline 1 has no dust adsorption or has less dust adsorption, the scraping fan is located in the placement cavity 12 in the conveying pipeline 1, and the placement cavity 12 is sealed and separated from the conveying pipeline 1 through the sealing valve 13. At this time, the conveying pipeline 1 normally conveys flue gas.

[0031] When a thick dust adsorption layer appears on the inner wall of the conveying pipeline 1, the sealing valve 13 on the placement cavity 12 is first opened, the second motor 10 is started to drive the dust scraping fan 4 to rotate, and then the first motor 7 is started to drive the lead screw 8 to rotate, and then the nut 9 drives the support frame 6 to slide on the fixed support 5. Thus, the dust scraping fan 4 can scrape the dust on the pipeline wall along the axis direction of the conveying pipeline 1, so as to avoid the influence of the dust adsorbed on the pipeline wall on the detection precision of the detection mechanism 3.

[0032] When the dust scraping fan 4 is scraping dust, the sealing door 15 on the conveying pipeline 1 can be opened, and the scraped dust can be discharged with flue gas through the dust discharge port 14. After the dust scraping is completed, the sealing door 15 is closed.

[0033] Specifically, the dust scraping fan 4 can be driven by the first motor 7 to reciprocate in the conveying pipeline 1 for multiple times of scraping.

[0034] Specifically, the dust discharging port 14 is connected with a filtering device, and the filtering device is further connected with a flue gas purification device of the incinerator through a pipeline.

[0035] Embodiment two:

[0036] The pipe wall scraping mechanism in the embodiment comprises a scraping plate connected with a translation driving mechanism, a plurality of through holes are arranged on the scraping plate, or the scraping plate is in a ring structure same as the section of the inner cavity of the conveying pipeline 1, the side edge of the scraping plate is in sliding contact with the inner wall of the conveying pipeline 1, and the dust on the inner wall of the conveying pipeline 1 can be scraped off by driving the scraping plate to move through the translation driving mechanism.

[0037] Other technical features in the embodiment are same as those in the embodiment one.

[0038] The preferred embodiments of the utility model are described above, the protection scope of the utility model is not only limited to the above-mentioned embodiments, and all technical solutions under the idea of the utility model belong to the protection scope of the utility model. It should be noted that, for ordinary skilled persons in the art, some improvements and decorations without departing from the principle of the utility model are also regarded as the protection scope of the utility model.

Claims

1. An incinerator flue gas monitoring device, characterised in that: The utility model provides a flue gas detection device, including conveying pipeline, one end of conveying pipeline stretches into flue gas pipeline, the other end is connected detection mechanism, be provided with tube wall scraping mechanism on conveying pipeline, tube wall scraping mechanism includes dust scraping fan, dust scraping fan is located in conveying pipeline, and the inner wall of conveying pipeline is contacted with the fan blade end of dust scraping fan, be connected with rotation drive mechanism and translation drive mechanism on dust scraping fan, rotation drive mechanism drives dust scraping fan rotation, translation drive mechanism drives dust scraping fan removes along conveying pipeline axis direction, and rotation drive mechanism is located on translation drive mechanism.

2. The incinerator flue gas monitoring apparatus according to claim 1, characterized by: The translation drive mechanism includes a fixed support, a support frame is slidably connected to the fixed support, the rotation drive mechanism is located on the support frame, a first motor is arranged on the fixed support, a lead screw is connected to the first motor, the lead screw is rotatably connected to the fixed support, a nut is arranged on the support frame, and the nut is threadedly connected to the lead screw.

3. The incinerator flue gas monitoring apparatus according to claim 2, characterized by: The rotation drive mechanism includes a second motor, and the main shaft of the second motor is connected to the dust scraping fan through a rotating rod.

4. The incinerator flue gas monitoring apparatus according to claim 2, characterized by: A guide rod is arranged on the fixed support, and the support frame is slidably connected to the guide rod.

5. The incinerator flue gas monitoring apparatus according to claim 1, characterized by: A placement cavity is arranged in the conveying pipeline, a sealing valve is arranged between the placement cavity and the conveying pipeline, a driving device is connected to the sealing valve, and the dust scraping fan is located in the placement cavity.

6. The incinerator flue gas monitoring apparatus according to claim 1, characterized by: A dust discharge port is arranged on the conveying pipeline, the dust discharge port is located between the detection mechanism and the tube wall scraping mechanism, and a detachable sealing door is arranged on the dust discharge port.

7. The incinerator flue gas monitoring apparatus according to claim 1, characterized by: The conveying pipeline includes multiple conveying sections with axes perpendicular or parallel to each other, and the tube wall scraping mechanism is arranged on each conveying section.

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