Sample gas collecting device

Abstract

The utility model discloses a sample gas collecting device which comprises a collecting assembly and a detector, the detector is communicated with the collecting assembly through a hose, the collecting assembly comprises a collecting pipe and a connecting pipe, an installing pipe is arranged on the outer side of the collecting pipe, an air inlet is formed in the lower portion of one end of the collecting pipe, a cleaning ring is arranged in the collecting pipe in a sliding mode, and two side supporting plates are arranged on the two sides in the collecting pipe. A lead screw is rotationally arranged between the side supporting plates located on the upper side, a guide rod is arranged between the side supporting plates located on the lower side, a motor with an output shaft connected with the lead screw is arranged in the collecting pipe, the cleaning ring is in threaded connection with the lead screw and is in sliding connection with the guide rod, an air pump is arranged on the connecting pipe, an air supply pipe communicated with the air pump is arranged in the connecting pipe, and an air valve is arranged in the connecting pipe. The utility model has the advantages that the inner wall of the collecting tube is automatically cleaned, and the service life of the detector is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler smoke detection, in particular to a gas sample collection device. Background Art

[0002] Incomplete combustion of carbon-containing fuels and combustion of special materials in boilers will produce pollutants such as carbon monoxide, sulfur dioxide, nitrogen oxides and smoke. Direct emissions will pollute the atmosphere, so the flue gas generated by the boiler will be discharged externally for treatment. Flue gas composition measurement can conduct qualitative or quantitative analysis of the pollutant components in the flue gas, which is beneficial to reducing pollutant emissions. Due to the high temperature characteristics of boiler flue gas, the detector cannot be directly installed on the pipeline for detection, otherwise the life of the gas sensor will be greatly shortened.

[0003] The general method of collecting boiler flue gas is to connect the detector to the sampling head through a hose and fix it directly in the chimney to sample the flue gas for testing. This detection method has some shortcomings:

[0004] (1) Boiler flue gas needs to be monitored for a long time. After long-term use, smoke dust easily accumulates on the inner wall of the collection tube, affecting the accuracy of subsequent detection. In severe cases, it may even cause the collection tube to be blocked.

[0005] (2) General detectors directly detect the extracted high-temperature flue gas, which will cause certain damage to the detection sensor. Utility Model Content

[0006] In order to solve the above problems, the utility model provides a gas sample collection device.

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is: a sample gas collection device, comprising a collection component and a detector, the detector and the collection component are connected through a hose, the collection component comprises a collection tube and a connecting pipe, the collection tube and the connecting pipe are sealed by a flange, a mounting pipe is provided on the outside of the collection tube, an air inlet is provided below one end of the collection tube, a positioning mark is provided on the flange so that the air inlet is opened downward before the mounting tube and the chimney are sealed, a cleaning ring is slidingly provided in the collection tube, two side support plates are provided on both sides of the collection tube, a screw rod is rotatably provided between the side support plates on the upper side, and a guide rod is provided between the side support plates on the lower side, a motor connected with an output shaft and the screw rod is provided in the collection tube, the cleaning ring is threadedly connected to the screw rod and is slidably connected to the guide rod, an air pump is provided on the connecting pipe, an air supply pipe connected to the air pump is provided in the connecting pipe, an air valve is provided in the connecting pipe, and the connecting pipe is connected to the hose through a connector.

[0008] As an improvement, a waste discharge box is provided on one side of the collection tube close to the connecting tube, and a material valve is provided on the lower side of the waste discharge box.

[0009] As an improvement, a scraping groove is provided on the rear side of the cleaning ring, and a notch is provided below the scraping groove. The outer diameter of the cleaning ring is the same as the inner diameter of the collection tube, and the notch is located directly above the waste discharge box.

[0010] As an improvement, a filter is provided on one side of the collection pipe close to the connecting pipe, and an air injection head with an opening facing the filter is provided on the air supply pipe.

[0011] As an improvement, telescopic dust covers are provided on both sides of the cleaning ring and sleeved on the outside of the screw rod, and the telescopic dust covers are fixedly connected to the side support plates by bolts.

[0012] The advantages of the utility model are: 1. It automatically cleans the inner wall of the collection tube. The cleaning ring is driven by the motor to move the cleaning ring in the collection tube to scrape the smoke and dust into the waste box. The retractable dust cover is used to protect the screw from dust, preventing the movement of the cleaning ring from being restricted.

[0013] 2. To improve the service life of the detector, the air input into the connecting pipe through the air pump is mixed with the flue gas input from the collection tube and then transported to the detector through the hose. The mixed flue gas can reduce the temperature of the flue gas and dilute the flue gas to simulate the situation after the flue gas is discharged. At the same time, the nozzle reversely blows the inside of the collection tube by changing the power of the air pump to further clean the inside of the collection tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the present utility model.

[0015] Figure 2 It is a schematic diagram of the structure of the collection tube of the present utility model.

[0016] Figure 3 It is a schematic structural diagram of the cleaning ring of the utility model.

[0017] As shown in the figure: 1. Collection component; 2. Detector; 3. Hose; 4. Collection tube; 5. Connecting tube; 6. Mounting tube; 7. Air inlet; 8. Cleaning ring; 9. Side support plate; 10. Screw; 11. Guide rod; 12. Motor; 13. Air pump; 14. Air supply pipe; 15. Air valve; 16. Waste box; 17. Material valve; 18. Scraper; 19. Notch; 20. Filter; 21. Injector head; 22. Telescopic dust cover. DETAILED DESCRIPTION

[0018] The present invention will be described in further detail below with reference to the accompanying drawings.

[0019] Combined with attachment Figure 1 、 Figure 2 、 Figure 3A gas sample collection device includes a collection component 1 and a detector 2. The detector 2 is connected to the collection component 1 through a hose 3. The collection component 1 includes a collection tube 4 and a connecting tube 5. The collection tube 4 and the connecting tube 5 are sealed by a flange. A mounting tube 6 is provided on the outside of the collection tube 4. An air inlet 7 is provided below one end of the collection tube 4. A positioning mark is provided on the flange so that the air inlet 7 is opened downward before the mounting tube 6 is sealed with the chimney. A cleaning ring 8 is provided in the collection tube 4. Two side support plates 9 are provided on both sides of the inner side. A screw rod 10 is rotatably provided between the side support plates 9 on the upper side, and a guide rod 11 is provided between the side support plates 9 on the lower side. A motor 12 with an output shaft connected to the screw rod 10 is provided in the collection tube 4. The cleaning ring 8 is threadedly connected to the screw rod 10 and slidingly connected to the guide rod 11. An air pump 13 is provided on the connecting tube 5. An air supply pipe 14 connected to the air pump 13 is provided in the connecting tube 5. An air valve 15 is provided in the connecting tube 5. The connecting tube 5 is connected to the hose 3 through a connector.

[0020] The collecting pipe 4 is connected to a waste discharge box 16 on one side close to the connecting pipe 5 , and a material valve 17 is provided on the lower side of the waste discharge box 16 . When the material valve 17 is opened, the smoke and dust accumulated in the waste discharge box 16 can be discharged.

[0021] A scraping groove 18 is provided on the rear side of the cleaning ring 8, and a notch 19 is provided below the scraping groove 18. The outer diameter of the cleaning ring 8 is the same as the inner diameter of the collection tube 4. The notch 19 is located directly above the waste discharge box 16. During movement, the cleaning ring 8 scrapes the accumulated dust and condensed water droplets on the inner wall of the collection tube 4 into the scraping groove 18 and finally discharges them into the waste discharge box 16 through the notch 19.

[0022] A filter 20 is provided on the side of the collection pipe 4 close to the connecting pipe 5, and a nozzle 21 with an opening facing the filter 20 is provided on the air supply pipe 14. The nozzle 21 can input air and mix with the flue gas, and can blow back the filter 20 to further clean the collection pipe 4.

[0023] Telescopic dust covers 22 are provided on both sides of the cleaning ring 8 and are sleeved on the outside of the screw rod 10. The telescopic dust covers 22 are fixedly connected to the side support plates 9 by bolts. The telescopic dust covers 22 can prevent dust accumulation on the screw rod 10 from affecting the movement of the cleaning ring 8.

[0024] During the specific implementation of the utility model, during installation: a hole is opened on the chimney, the installation pipe is placed in the chimney and then sealed with the chimney (the air inlet opening is facing downward according to the indication mark on the flange), the connecting pipe and the collection pipe are sealed and fixedly connected through the flange, and the connecting pipe is connected to the detector through a hose. During detection, the smoke enters the collection pipe from the air inlet, the air pump inputs air into the connecting pipe through the air inlet pipe to mix with the smoke, and the detector detects the smoke;

[0025] During cleaning: start the motor to drive the screw to rotate, and the cleaning ring moves along the guide rod in the collection tube. The cleaning ring scrapes the smoke and dust on the inner wall of the collection tube into the scraping groove, and the cleaning ring moves to the upper side of the waste discharge box. During this process, the telescopic dust covers on both sides of the cleaning ring are stretched and deformed, and the smoke and dust are discharged into the waste discharge box from the slot. Open the material valve to discharge the smoke and dust, and start the air pump to reversely blow and clean the filter and collection tube through the jet head.

[0026] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A gas sample collection device, characterized in that: The invention comprises a collection component (1) and a detector (2), wherein the detector (2) and the collection component (1) are connected via a hose (3), the collection component (1) comprises a collection pipe (4) and a connecting pipe (5), wherein the collection pipe (4) and the connecting pipe (5) are sealed via a flange, a mounting pipe (6) is provided on the outside of the collection pipe (4), an air inlet (7) is provided below one end of the collection pipe (4), a positioning mark is provided on the flange so that the air inlet (7) is opened downward before the mounting pipe (6) is sealed with the chimney, a cleaning ring (8) is provided in a sliding manner in the collection pipe (4), and both sides of the collection pipe (4) are provided with Two side support plates (9), a screw rod (10) is rotatably provided between the upper side support plates (9), and a guide rod (11) is provided between the lower side support plates (9). A motor (12) whose output shaft is connected to the screw rod (10) is provided in the collection tube (4). The cleaning ring (8) is threadedly connected to the screw rod (10) and slidably connected to the guide rod (11). An air pump (13) is provided on the connecting tube (5), an air supply pipe (14) connected to the air pump (13) is provided in the connecting tube (5), an air valve (15) is provided in the connecting tube (5), and the connecting tube (5) is connected to the hose (3) through a connector.

2. A gas sample collection device according to claim 1, characterized in that: The collecting tube (4) is connected to a waste discharge box (16) on one side close to the connecting tube (5), and a material valve (17) is provided on the lower side of the waste discharge box (16).

3. A gas sample collection device according to claim 1, characterized in that: The rear side of the cleaning ring (8) is provided with a scraping groove (18), and a notch (19) is provided below the scraping groove (18). The outer diameter of the cleaning ring (8) is the same as the inner diameter of the collection tube (4), and the notch (19) is located directly above the waste discharge box (16).

4. A gas sample collection device according to claim 1, characterized in that: A filter screen (20) is provided on one side of the collection pipe (4) close to the connecting pipe (5), and an air injection head (21) with an opening facing the filter screen (20) is provided on the air supply pipe (14).

5. The gas sample collection device according to claim 1, characterized in that: Telescopic dust covers (22) are provided on both sides of the cleaning ring (8) and sleeved on the outside of the screw rod (10). The telescopic dust covers (22) are fixedly connected to the side support plates (9) by bolts.

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