Flue gas analyzer with filtering structure

Abstract

The utility model discloses a flue gas analyzer with a filtering structure, which comprises an analyzer body, the bottom of the analyzer body is communicated and provided with a flue gas probe with a gas pipe through a connector, the flue gas analyzer also comprises a filtering assembly, a communicating pipe is arranged in the middle of the connector, the filtering assembly is arranged in the communicating pipe, and the filtering assembly comprises a filtering assembly frame. A through hole with a square cross section is formed in the communicating pipe in the axial direction of the communicating pipe, a plurality of grooves with positive cross sections are formed in the through hole at equal intervals, the cross section area of the grooves is larger than that of the through hole, the filter screen frame is arranged in the grooves, and two mounting cavities are symmetrically formed in the filter screen frame. According to the present invention, the dust particles entering the analyzer body from the gas pipe can be filtered, and the mounting pipe and the conical head are arranged so as to conveniently disassemble the communication pipe and regularly clean and replace the filtration assembly, such that the damage to the analyzer body is reduced, and the use reliability of the analyzer body is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of flue gas analyzers, specifically to a flue gas analyzer with a filter structure. Background Technology

[0002] Flue gas analyzers are used to measure the concentrations of CO2, CO, NOx, SO2, and other pollutants in the surrounding environment to assess the safety of the atmospheric environment. A flue gas analyzer consists of the analyzer body and a flue gas probe installed at the gas input end of the analyzer body via a gas tube. In use, the flue gas probe is inserted into the internal environment of the flue gas to be detected, and the flue gas is transported through the gas tube into the analyzer body for analysis, thus achieving flue gas data measurement. However, flue gas contains a significant amount of particulate matter and moisture. If not filtered in time, these particles can easily be transported into the analyzer body and cause damage. Therefore, a filtration structure needs to be designed to block particulate matter and moisture in the flue gas, reducing damage to the analyzer body. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a flue gas analyzer with a filter structure, thereby solving the problem mentioned in the background art where the flue gas in the gas pipe contains particulate dust and moisture, causing damage to the analyzer body.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the present invention provides the following technical solution: a flue gas analyzer with a filter structure, comprising an analyzer body, wherein a flue gas probe with a gas tube is connected and installed at the bottom of the analyzer body via a connector, and further comprising a filter assembly, wherein a connecting pipe is provided in the middle of the connector, and the filter assembly is disposed in the connecting pipe;

[0007] The filter assembly includes a filter assembly frame. The connecting pipe has a through hole with a square cross-section along its axial direction. Multiple grooves with positive cross-sections are evenly spaced inside the through hole. The cross-sectional area of ​​the grooves is larger than that of the through hole. The filter frame is placed in the grooves. The filter frame has two symmetrical mounting cavities. Each mounting cavity is equipped with a filter assembly.

[0008] The thickness of the filter frame is less than the thickness of the groove, and two rotating shafts are symmetrically arranged on the outer wall of the filter frame. The rotating shafts are located at the center of the frame. A strip groove is provided in the groove along its thickness direction corresponding to the position of the rotating shaft. The rotating shaft is located in the strip groove. A spring connects two adjacent filter frames.

[0009] Furthermore, the filter assembly is arranged in a wave-shaped structure, and the filter assembly includes a filter screen arranged in a superimposed manner and a water-absorbing filter cotton, with the filter cotton located below the filter screen.

[0010] Furthermore, the two adjacent filter frames are staggered, and the corresponding strip grooves on the two adjacent grooves are also staggered.

[0011] Furthermore, the spring is located at the central axis of the connecting tube.

[0012] Furthermore, the cross-sectional area of ​​the filter frame is between the cross-sectional area of ​​the groove and the cross-sectional area of ​​the passage.

[0013] Furthermore, the connector also includes a mounting tube and a tapered head. One end of the tapered head is connected to the gas tube on the flue gas probe. Both ends of the outer circumference of the mounting tube are fixedly fitted with mounting rings, and the outer wall of the tapered head is also fixedly fitted with the mounting rings. Two locking screw caps are symmetrically installed on the mounting tube, and the tapered head is also fitted with the locking screw caps. External threads are provided on the upper and lower sides of the connecting tube for threaded engagement with the locking screw.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention provides a flue gas analyzer with a filter structure, which has the following advantages:

[0016] 1. This utility model, by setting up a filter assembly, can filter dust particles and moisture entering the analyzer body from the gas tube. The filter cotton is located below the filter screen. When the flue gas is transported into the analyzer body through the gas tube, the filter cotton can absorb the moisture in the flue gas, while the particulate dust in the flue gas will be intercepted by the filter screen. The setting of the installation tube and the conical head also facilitates the disassembly of the connecting tube, and allows for regular cleaning and replacement of the filter assembly, thereby reducing damage to the analyzer body and improving the reliability of the analyzer body.

[0017] 2. In this utility model, the thickness of the groove is greater than the thickness of the filter frame. After the flue gas enters the filter assembly, the airflow of the flue gas, under the action of the rotating shaft, will drive the filter plate to rotate or jump up and down inside the strip groove, thereby preventing dust particles from accumulating on the surface of the filter assembly and increasing the contact range between the flue gas and the filter assembly. The spring setting enhances the swing of the filter frame inside the groove, improving the vibration effect. Furthermore, the groove setting also reduces the problem of flue gas directly entering the analyzer without passing through the filter assembly. Under the action of the layered filter assembly, the filtration effect of particulate dust in the flue gas is enhanced. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this application;

[0019] Figure 2 This is a structural schematic diagram of the analyzer body and connector in disassembled state according to this application;

[0020] Figure 3 This is a schematic diagram of the connector in its disassembled state in this application;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the locking screw cap, the mounting tube, and the retaining ring in this application;

[0022] Figure 5 This is a schematic diagram of the structure of multiple filter frames inside the connecting tube in this application;

[0023] Figure 6 This is a schematic diagram of the filter frame, filter assembly, and rotating shaft in this application;

[0024] Figure 7 This is a schematic diagram of the cross-sectional structure of the through hole and groove in this application.

[0025] Figure 8 This is a schematic diagram of the planar structure of the filter screen and filter cotton in this application.

[0026] In the diagram: 1. Analyzer body; 2. Gas tube; 3. Flue gas probe; 4. Connecting tube; 5. Filter frame; 6. Through hole; 7. Groove; 8. Filter screen; 9. Strip groove; 10. Spring; 11. Mounting tube; 12. Conical head; 13. Mounting ring; 14. Locking cap; 15. External thread; 16. Sealing ring; 17. Sealing ring; 18. Rotating shaft. Detailed Implementation

[0027] 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.

[0028] For examples, please refer to Figures 1 to 8A flue gas analyzer with a filter structure includes an analyzer body 1. A flue gas probe 3 with a gas tube 2 is connected to the bottom of the analyzer body 1 via a connector. Flue gas analyzers are devices known to those skilled in the art. This application does not alter the internal structure and working principle of the flue gas analyzer body 1. It also includes a filter assembly. A connecting pipe 4 is provided in the middle of the connector, and the filter assembly is disposed within the connecting pipe 4. The filter assembly can filter particulate matter entering the analyzer body 1. The filter assembly includes a filter frame 5. A through hole 6 with a square cross-section is provided inside the connecting pipe 4 along its axial direction, and multiple grooves with a positive cross-section are evenly spaced inside the through hole 6. 7. The cross-sectional area of ​​the groove 7 is larger than that of the through hole 6. The filter frame 5 is set in the groove 7, and two mounting cavities are symmetrically arranged on the filter frame 5. Each mounting cavity is equipped with a filter assembly. The filter assembly is arranged in a wave-shaped structure and includes a filter screen 8 and a water-absorbing filter cotton 17 arranged in a superimposed manner. The filter cotton 17 is located below the filter screen 8. When the flue gas is transported to the analyzer body 1 through the gas pipe 2, the filter cotton 17 can absorb the moisture in the flue gas. The particulate dust in the flue gas will be intercepted by the filter screen 8. The wave-shaped arrangement can enhance the filtration area of ​​the filter assembly, thereby increasing the filtration effect on particulate dust in the flue gas.

[0029] Correspondingly, the thickness of the filter frame 5 is less than the thickness of the groove 7, and two rotating shafts 18 are symmetrically arranged on the outer wall of the filter frame 5. The rotating shafts 18 are located at the center of the frame of the filter frame 5. A strip groove 9 is arranged in the groove 7 along its thickness direction corresponding to the position of the rotating shaft 18. The rotating shaft 18 is located in the strip groove 9. A spring 10 connects two adjacent filter frames 5. As the flue gas flows through the filter assembly, the filter assembly will vibrate under the action of the rotating shaft 18. On the one hand, this can prevent particulate dust from accumulating on the filter assembly. On the other hand, it can also more effectively utilize multiple positions of the filter assembly to filter and intercept the flue gas, thereby improving the filtration effect. By setting multiple filter frames 5, the efficiency can be improved. The filtration effect is achieved by staggering the adjacent filter frames 5 and the corresponding strip grooves 9 on the adjacent grooves 7. The spring 10 is located at the central axis of the connecting pipe 4. The cross-sectional area of ​​the filter frame 5 is between the cross-sectional area of ​​the groove 7 and the cross-sectional area of ​​the connecting pipe. The staggered arrangement of the filter frames 5 can reduce the situation where unfiltered flue gas is transported into the analyzer. At the same time, since the rotating shaft 18 can rotate inside the strip groove 9 and slide up and down inside the strip groove 9 due to the impact of the flue gas flow, and under the action of the spring 10, the spring 10 will deform under compression, thereby continuously causing the filter frame 5 to shake, further enhancing the filtration effect of the filter assembly on particulate dust in the flue gas.

[0030] Accordingly, please refer to Figure 1-4 The connector also includes a mounting tube 11 and a tapered head 12. One end of the tapered head 12 is connected to the gas pipe 2 on the flue gas probe 3. Mounting rings 13 are fixedly fitted at both ends of the outer circumference of the mounting tube 11, and mounting rings 13 are also fixedly fitted on the outer wall of the tapered head 12. Two locking screw caps 14 are symmetrically installed on the mounting tube 11, and locking screw caps 14 are also installed on the tapered head 12. External threads 15 are provided on the upper and lower sides of the connecting tube 4 for threaded engagement with the locking screw. By rotating the locking screw, the connecting tube 4 can be... Disassembly is performed. The mounting tube 11 matches the mounting hole at the bottom of the analyzer body 1 in the prior art, which is the prior art. The locking screw cap 14 located below the mounting tube 11 is threaded with the external thread 15 on the connecting tube 4, so that it can be rotated to disassemble or rotated to lock. The locking screw on the conical head 12 has the same function. During installation, sealing rings 16 are placed at both ends of the connecting tube 4 to ensure the sealing effect after the locking screw cap 14 locks the mounting tube 11, the conical head 12 and the connecting tube 4, and to prevent air leakage.

[0031] In summary, when using this flue gas analyzer with a filter structure, firstly, the flue gas probe 3 is connected to the analyzer body 1 via the connector. Then, the flue gas probe 3 is delivered to the location to be detected. The flue gas enters the filter assembly through the gas pipe 2. The filter assembly and the moisture-absorbing filter cotton 17 absorb the particulate matter and moisture in the flue gas. The absorbed flue gas then re-enters the analyzer body 1 for gas analysis. The operating principle of the analyzer body 1 can be referred to its instruction manual. After the filter assembly inside the connector has been used for a period of time, it can be replaced or cleaned by rotating the locking cap 14 and disassembling the connecting pipe 4.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flue gas analyzer with filtering structure, comprising an analyzer body (1), the bottom of the analyzer body (1) is communicatedly installed with a flue gas probe (3) with a gas pipe (2) through a connector, characterized in that, The filter assembly is arranged in the communication pipe (4), the inside of the communication pipe (4) is provided with a through hole (6) with a square cross section along the axial direction, a plurality of recesses (7) with a square cross section are equidistantly arranged in the through hole (6), the cross-sectional area of the recess (7) is greater than that of the through hole (6), the filter frame (5) is arranged in the recess (7), two mounting cavities are symmetrically arranged on the filter frame (5), a filter assembly is arranged in each mounting cavity, the thickness of the filter frame (5) is less than that of the recess (7), two rotating shafts (18) are symmetrically arranged on the outer wall of the filter frame (5), the rotating shaft (18) is located at the center of the frame of the filter frame (5), a strip-shaped sliding groove (9) is arranged in the recess (7) corresponding to the position of the rotating shaft (18) along the thickness direction, the rotating shaft (18) is located in the strip-shaped sliding groove (9), and the spring (10) is connected between the two adjacent filter frames (5).

2. The flue gas analyzer with filtering structure according to claim 1, characterized in that, The filter assembly is arranged in a wave shape, and comprises a filter screen (8) and filter cotton (17) capable of absorbing water arranged in a superposition manner, the filter cotton (17) being located below the filter screen (8).

3. A flue gas analyzer with a filter structure according to claim 2, characterized in that, The two adjacent filter frames (5) are arranged in a staggered manner, and the corresponding strip-shaped sliding grooves (9) of the two adjacent recesses (7) are also arranged in a staggered manner.

4. The flue gas analyzer with a filtering structure according to claim 3, characterized in that, The spring (10) is located at the central axis of the communication pipe (4).

5. A flue gas analyzer with a filter structure according to claim 4, characterized in that, The cross-sectional area of the filter frame (5) is between the cross-sectional area of the recess (7) and the cross-sectional area of the through hole.

6. A flue gas analyzer with a filter structure according to claim 5, characterized in that, The connector further comprises a mounting pipe (11) and a conical head (12), one end of the conical head (12) is communicated with the air pipe (2) on the flue gas probe (3), mounting rings (13) are fixedly sleeved on both ends of the circumferential outer wall of the mounting pipe (11), and the mounting rings (13) are also fixedly sleeved on the outer wall of the conical head (12), two locking screw covers (14) are symmetrically mounted on the mounting pipe (11), and the locking screw covers (14) are also mounted on the conical head (12), external threads (15) are arranged on the outer upper side and the outer lower side of the communication pipe (4), and are used for threadedly cooperating with locking screw threads.

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