Anti-clogging sampling probe device for a flue gas analyzer

Abstract

The utility model relates to gas detection technical field especially relates to a kind of anti-blocking sampling probe device of flue gas analyzer, including connecting line, the connecting line one side is fixedly connected with detection head, the detection head surface is provided with anti-blocking mechanism, the anti-blocking mechanism includes the mounting plate fixedly connected on the detection head surface, the anti-blocking cylinder fixedly connected in the top of the mounting plate, the filter screen rotationally connected in the inside one side of the anti-blocking cylinder;The utility model is by setting rotatable filter screen structure, and the filter area of filter screen is switched regularly in combination with motor drive, avoid the plugging problem caused by local long-term dust accumulation, to guarantee that flue gas flows smoothly, improve the accuracy and stability of gas composition detection, by integrated cleaning mechanism, utilize the real-time cleaning of filter screen surface by flue gas itself flow and back-blowing airflow, can be attached dust blow back flue, significantly reduce the demand of artificial cleaning and maintenance, improve equipment continuous operation time.

Description

Technical Field

[0001] This utility model relates to the field of gas detection technology, and in particular to an anti-clogging sampling probe device for a flue gas analyzer. Background Technology

[0002] Flue gas analyzers, as key equipment in environmental monitoring and industrial process control, are widely used in many fields such as thermal power generation, metallurgy, chemical industry, building materials, and waste incineration. They are used to monitor the concentration of gaseous components such as oxygen, sulfur dioxide, nitrogen oxides, carbon monoxide, and carbon dioxide in flue gas in real time. The accuracy and stability of their measurement data are directly related to compliance with environmental emission standards, optimization of combustion efficiency, and production safety.

[0003] In a flue gas analysis system, the sampling probe device is the "first line of defense" that comes into direct contact with the high-temperature, high-humidity, and high-dust flue gas being measured. Its performance plays a decisive role in the representativeness and reliability of the entire analysis results.

[0004] In existing flue gas analyzers, the detection probes used for gas detection are subject to dust accumulation at the probe tip due to prolonged contact with flue gas, caused by changes in flow rate, inertia, or electrostatic adsorption. This blockage necessitates frequent cleaning and maintenance of the probes, leading to decreased detection efficiency and accuracy, and shortening the probe's lifespan.

[0005] Therefore, in view of the problem that existing sampling probe devices are prone to clogging during use, an anti-clogging sampling probe device for flue gas analyzers can be designed to prevent clogging of the sampling probe, ensure its detection efficiency and accuracy, and extend its service life. Utility Model Content

[0006] To overcome the problem of clogging that occurs easily during the use of existing sampling probe devices.

[0007] The technical solution of this utility model is as follows: an anti-clogging sampling probe device for a flue gas analyzer, including a connecting wire, a detection head fixedly connected to one side of the connecting wire, an anti-clogging mechanism provided on the surface of the detection head, the anti-clogging mechanism including a mounting plate fixedly connected to the surface of the detection head, an anti-clogging cylinder fixedly connected to the top of the mounting plate, a filter screen rotatably connected to one side inside the anti-clogging cylinder, and an air inlet hole opened at the top of the anti-clogging cylinder.

[0008] Preferably, the flue gas to be tested enters through the air inlet at the top of the anti-clogging cylinder. After being filtered by the filter screen, the clean gas contacts the detection head to complete the component analysis. The motor starts according to the set cycle, and drives the filter screen to rotate through the drive rod, switching its effective filtration area. During the rotation, the edge of the air inlet scrapes off the dust accumulated on the surface of the filter screen. The scraped dust falls into the collection tank. Some of the flue gas flows through the collection tank, the first guide channel, and the anti-turbulence channel, bringing the deposited dust back to the flue, realizing the natural return of dust. At the same time, some of the filtered clean gas flows into the manifold through the duct, forming a backflush airflow to blow away the filter screen. The clogging particles are discharged through the second guide channel and the anti-turbulence channel. Through the synergistic effect of filter screen rotation, scraping, return, and backflush, the filter screen surface is continuously cleaned, effectively preventing clogging, ensuring the long-term stable operation of the detection probe, and guaranteeing the accuracy of flue gas analysis and the service life of the equipment.

[0009] Preferably, the anti-blocking mechanism also includes a motor rotatably connected to the bottom of the mounting plate and a drive rod fixedly connected to the output end of the motor.

[0010] Preferably, a sealing baffle is fixedly connected to one side of the inside of the anti-clogging cylinder, an anti-turbulence block is provided on one side of the sealing baffle, and a cleaning mechanism is provided on the top of the sealing baffle.

[0011] Preferably, the cleaning mechanism includes an anti-disturbance channel opened on one side of the anti-disturbance block, a first guide channel disposed on one side of the anti-disturbance block, a second guide channel disposed at the bottom of the first guide channel, and a collection trough disposed on one side of the first guide channel.

[0012] Preferably, the cleaning mechanism also includes a conduit connected to one side of the sealing baffle and a manifold connected to one side of the conduit.

[0013] Preferably, a protective filter cartridge is provided on the surface of the motor, and the motor is fixedly connected to the bottom of the protective filter cartridge.

[0014] Preferably, the top of the mounting plate has a mounting hole, and the top of the filter screen is in close contact with the top of the anti-clogging cylinder.

[0015] The beneficial effects of this utility model are as follows: By setting a rotatable filter structure and combining it with a motor drive to periodically switch the filter area, the blockage problem caused by long-term local dust accumulation is avoided, thereby ensuring smooth flue gas flow and improving the accuracy and stability of gas composition detection. Through the integrated cleaning mechanism, the filter surface is cleaned in real time using the flue gas flow itself and the back-blowing airflow, which can blow the attached dust back into the flue, significantly reducing the need for manual cleaning and maintenance and increasing the continuous operation time of the equipment. The combined design of the anti-clogging cylinder, sealing baffle and anti-turbulence block effectively optimizes the airflow path and reduces the interference of turbulence and eddies on the detection process. At the same time, the protective filter cylinder effectively protects the motor and extends the service life of the motor. Through the cooperation of the mounting plate and mounting holes, the entire device can be easily and securely installed at different sampling points, which has good engineering applicability and scalability. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional schematic of Embodiment 3 of the anti-clogging sampling probe device for a flue gas analyzer according to this utility model.

[0017] Figure 2 The diagram shown is a three-dimensional schematic of Embodiment 2 of the anti-clogging sampling probe device for a flue gas analyzer according to this utility model.

[0018] Figure 3 The image shown is a top view of the manifold in the anti-clogging sampling probe device of a flue gas analyzer according to this utility model.

[0019] Figure 4 The diagram shown is a three-dimensional schematic of Embodiment 1 of the anti-clogging sampling probe device for a flue gas analyzer according to this utility model.

[0020] Figure 5 This invention relates to an anti-clogging sampling probe device for a flue gas analyzer. Figure 2 A magnified view of A in the middle.

[0021] Explanation of reference numerals in the attached drawings: 1. Connecting line; 2. Detection head; 3. Anti-clogging mechanism; 31. Mounting plate; 32. Anti-clogging cylinder; 33. Filter screen; 34. Air inlet; 35. Motor; 36. Drive rod; 4. Sealing baffle; 5. Anti-turbulence block; 6. Cleaning mechanism; 61. Anti-turbulence channel; 62. First guide channel; 63. Second guide channel; 64. Collection tank; 65. Guide tube; 66. Manifold; 7. Protective filter cartridge. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Example 1

[0024] Please see Figure 3 Figure 4 This utility model provides an embodiment: an anti-clogging sampling probe device for a flue gas analyzer, including a connecting line 1, a detection head 2 fixedly connected to one side of the connecting line 1, an anti-clogging mechanism 3 provided on the surface of the detection head 2, the anti-clogging mechanism 3 including a mounting plate 31 fixedly connected to the surface of the detection head 2, an anti-clogging cylinder 32 fixedly connected to the top of the mounting plate 31, a filter screen 33 rotatably connected to one side inside the anti-clogging cylinder 32, and an air inlet 34 opened at the top of the anti-clogging cylinder 32. The anti-clogging mechanism 3 also includes a motor 35 rotatably connected to the bottom of the mounting plate 31, a drive rod 36 fixedly connected to the output end of the motor 35, a protective filter cylinder 7 provided on the surface of the motor 35, and a fixed connection between the motor 35 and the bottom of the protective filter cylinder 7.

[0025] During operation, filter screen 33 is rotatably connected to anti-clogging cylinder 32 via bearings, motor 35's output end is rotatably connected to mounting plate 31 via bearings, the top of drive rod 36 is fixedly connected to filter screen 33, and the top of protective filter cylinder 7 is fixedly connected to mounting plate 31. Connecting line 1 connects the flue gas analyzer to detection head 2, transmitting detection signals and power to ensure normal equipment operation. Detection head 2, the core detection component, is used for real-time monitoring of gas components in flue gas. It is located inside anti-clogging cylinder 32 and protected by filter screen 33. Mounting plate 31 serves as structural support, fixing anti-clogging cylinder 32, motor 35, and other components, and installing the entire device at the sampling position through mounting holes. The outer shell structure of anti-clogging cylinder 32 accommodates filter screen 33 and sealing baffle 4, guiding flue gas flow and protecting the internal structure. Filter screen 33 filters powder from the flue gas. Dust and particulate matter are prevented from entering the detection head 2 and causing blockage or damage. The filter surface can be rotated and replaced to extend its service life. The air inlet 34 is the channel for flue gas to enter the device, guiding the flue gas flow to the filter screen 33. The motor 35 provides power to drive the filter screen 33 to rotate, realizing the replacement and self-cleaning of the filter surface. The drive rod 36 connects the motor 35 and the filter screen 33, transmitting torque to make the filter screen 33 rotate. The protective filter cartridge 7 protects the motor 35 from dust, extending the service life of the motor 35. During operation, the flue gas to be detected is filtered by the filter screen 33 through the air inlet 34 and then detected by the detection head 2. The motor 35 is periodically operated to drive the drive rod 36 and the filter screen 33 to rotate as a whole, so as to change the position of the filter screen 33 at the air inlet 34, ensuring the filtration effect of the filter screen 33, thereby improving the detection accuracy.

[0026] Example 2

[0027] Please see Figure 2 and Figure 5The difference from Embodiment 1 is that a sealing baffle 4 is fixedly connected to one side of the inside of the anti-blocking cylinder 32, an anti-turbulence block 5 is provided on one side of the sealing baffle 4, and a cleaning mechanism 6 is provided on the top of the sealing baffle 4. The cleaning mechanism 6 includes an anti-turbulence channel 61 opened on one side of the anti-turbulence block 5, a first guide channel 62 provided on one side of the anti-turbulence block 5, a second guide channel 63 provided at the bottom of the first guide channel 62, and a collection trough 64 provided on one side of the first guide channel 62. The cleaning mechanism 6 also includes a conduit 65 connected to one side of the sealing baffle 4 and a manifold 66 connected to one side of the conduit 65.

[0028] The filter screen 33 and drive rod 36 are in close contact with the sealing baffle 4. The anti-turbulence block 5 is fixedly connected to the anti-blocking cylinder 32. There are two anti-turbulence channels 61. The first guide channel 62 and the second guide channel 63 are both connected to the anti-turbulence channel 61. The first guide channel 62 and the second guide channel 63 are both opened on one side of the anti-blocking cylinder 32. The collection groove 64 is opened inside the air inlet 34 and is connected to the first guide channel 62. The bottom opening of the collection groove 64 is an arc-shaped surface. The top of the manifold 66 is in contact with the filter screen 33. The bottom of the manifold 66 is fixedly connected to the mounting plate 31. The sealing baffle 4 isolates the filter screen 33. The anti-turbulence block 5 optimizes the airflow path, reduces turbulence and eddies, ensures smooth flow of flue gas, and improves detection stability. The anti-turbulence channel 61 guides the airflow and blows the scraped dust back into the flue. The first guide channel 62 connects the collection groove 64 and the anti-turbulence channel 61 to transport the scraped dust. The second guide channel 63 guides the backflush airflow, and the collection tank 64 collects the scraped dust. Its arc-shaped bottom surface facilitates the dust discharge with the airflow. The duct 65 guides the filtered clean flue gas to the manifold 66 for backflush cleaning. The manifold 66 concentrates the clean airflow to backflush the filter screen 33 and remove the clogging dust. When working, the drive rod 36 drives the filter screen 33 to rotate and change the filter position. The air inlet 34 scrapes and cleans the surface of the filter screen 33, scraping off the dust on the surface of the filter screen 33 and depositing it at the opening of the collection tank 64. The flue gas will be blown back into the pipeline through the collection tank 64, the first guide channel 62 and the anti-turbulence channel 61. The filtered flue gas enters the manifold 66 through the duct 65 and blows towards the filter screen 33, blowing out the dust clogging the filter screen 33 through the second guide channel 63 and the anti-turbulence channel 61. This achieves surface cleaning and anti-clogging of the filter screen 33 and ensures the long-term use of the filter screen 33.

[0029] Example 3

[0030] Please see Figure 1 The difference from Embodiment 1 is that the top of the mounting plate 31 has a mounting hole, and the top of the filter screen 33 is in close contact with the top of the anti-clogging cylinder 32.

[0031] During operation, the entire device can be installed in the required position via the mounting plate 31 and mounting holes. The filter screen 33 is in close contact with the anti-clogging cylinder 32, ensuring that the flue gas can enter smoothly through the air inlet 34.

[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A non-clogging sampling probe device for a flue gas analyzer, comprising a connecting wire (1), characterized in that: A detection head (2) is fixedly connected to one side of the connecting line (1). An anti-clogging mechanism (3) is provided on the surface of the detection head (2). The anti-clogging mechanism (3) includes a mounting plate (31) fixedly connected to the surface of the detection head (2), an anti-clogging cylinder (32) fixedly connected to the top of the mounting plate (31), a filter screen (33) rotatably connected to one side inside the anti-clogging cylinder (32), and an air inlet (34) opened on the top of the anti-clogging cylinder (32).

2. The anti-clogging sampling probe device for a flue gas analyzer according to claim 1, characterized in that: The anti-blocking mechanism (3) also includes a motor (35) rotatably connected to the bottom of the mounting plate (31) and a drive rod (36) fixedly connected to the output end of the motor (35).

3. The anti-clogging sampling probe device for a flue gas analyzer according to claim 1, characterized in that: A sealing baffle (4) is fixedly connected to one side inside the anti-clogging cylinder (32), an anti-turbulence block (5) is provided on one side of the sealing baffle (4), and a cleaning mechanism (6) is provided on the top of the sealing baffle (4).

4. The anti-clogging sampling probe device for a flue gas analyzer according to claim 3, characterized in that: The cleaning mechanism (6) includes an anti-disturbance channel (61) opened on one side of the anti-disturbance block (5), a first guide channel (62) set on one side of the anti-disturbance block (5), a second guide channel (63) set at the bottom of the first guide channel (62), and a collection trough (64) set on one side of the first guide channel (62).

5. The anti-clogging sampling probe device for a flue gas analyzer according to claim 3, characterized in that: The cleaning mechanism (6) also includes a conduit (65) connected to one side of the sealing baffle (4) and a manifold (66) connected to one side of the conduit (65).

6. The anti-clogging sampling probe device for a flue gas analyzer according to claim 2, characterized in that: The motor (35) is provided with a protective filter cartridge (7) on its surface, and the motor (35) is fixedly connected to the bottom of the protective filter cartridge (7).

7. The anti-clogging sampling probe device for a flue gas analyzer according to claim 1, characterized in that: The mounting plate (31) has a mounting hole at the top, and the top of the filter screen (33) is in close contact with the top of the anti-clogging cylinder (32).

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