Device for detecting low-concentration particulate matters in waste gas

Abstract

The utility model relates to the field of waste gas detection, and discloses a device for detecting low-concentration particles in waste gas, the device comprises a detection box and a mounting rack, one end of the detection box is provided with a connecting hole, the top of the detection box is fixedly provided with a plurality of control parts, and the top of the mounting rack is fixedly connected with a shielding cover. The size specification of the bottom end of the shielding cover is matched with the size specification of the top of the mounting frame, a handle is fixedly mounted at the top of the shielding cover, a plurality of sliding blocks are fixedly connected to one end of the mounting frame, and the inner wall of the mounting frame is slidably mounted on the top of the detection box; the mounting frame is connected with the top of the detection box, the top of the mounting frame is connected with a shielding cover, and a handle is mounted at the top of the shielding cover, so that the top of the detection box is shielded by virtue of the shielding cover, impurities and dust in an external environment are prevented from polluting a control component, and the influence on use of a worker is avoided; and the detection box is convenient to carry through the handle.

Description

Technical Field

[0001] This application relates to the field of exhaust gas detection, and in particular to a device for detecting low concentrations of particulate matter in exhaust gas. Background Technology

[0002] The detection of low-concentration particulate matter in exhaust gas is performed using the gravimetric method. The core principle of this method is isokinetic sampling. Particulate matter is collected through a filter membrane, and the mass difference of the filter membrane before and after sampling is measured. Combined with the collected exhaust gas volume, the mass concentration of particulate matter in the exhaust gas is calculated. This method is widely used for monitoring exhaust gas from stationary pollution sources generated during industrial production processes, such as boilers and kilns in industries like thermal power generation, steel metallurgy, and chemical production. Especially in areas with high requirements for ambient air quality, this method can effectively monitor low-concentration particulate matter emissions. The detection principles for low-concentration particulate matter in exhaust gas mainly include the filter membrane gravimetric method and the beta-ray absorption method. The filter membrane gravimetric method uses the isokinetic sampling principle to collect particulate matter in the exhaust gas using a filter membrane. The beta-ray absorption method uses a beta-ray source and detector for measurement. In conventional low-concentration particulate matter detection, the exhaust gas end is connected to the connection hole inside the detection chamber. Several control components are installed on the top of the detection chamber, which are used to operate the chamber and detect the exhaust gas.

[0003] Regarding the aforementioned technologies, the inventors believe that when conventional exhaust gas detectors are used, since the detector needs to detect the exhaust gas source, and the location of the exhaust gas source is prone to a lot of dust and impurities, when the detector is in use, external impurities and dust can easily adhere to the top of the detection box and the upper part of the control components, resulting in contamination of the control components and affecting the user's operation.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content

[0005] To address the problem of exhaust gas detectors being contaminated by impurities and dust in the surrounding air during exhaust gas detection, this application provides a device for detecting low-concentration particulate matter in exhaust gas.

[0006] The technical solution for the low-concentration particulate matter detection device in exhaust gas provided in this application is as follows:

[0007] A device for detecting low-concentration particulate matter in exhaust gas includes a detection box and a mounting frame. One end of the detection box has a connection hole, and several control components are fixedly mounted on the top of the detection box. A shield is fixedly connected to the top of the mounting frame, the bottom dimensions of which are compatible with the top dimensions of the mounting frame, and a handle is fixedly mounted on the top of the shield. Several sliders are fixedly connected to one end of the mounting frame. The inner wall of the mounting frame is slidably mounted to the top of the detection box, and the dimensions of the inner wall of the mounting frame are compatible with the top dimensions of the detection box. The shield has a V-shaped cross-section.

[0008] Preferably, the surface of the slider is slidably connected to the surface of the detection box, and the sliders are divided into two groups, with the two groups of sliders symmetrically distributed about the detection box as an axis.

[0009] Preferably, the surface of the mounting frame has two sliding grooves, which are symmetrically distributed about the mounting frame. A fixing block is slidably installed on the inner wall of the sliding groove. One end of the fixing block is fixedly connected to the surface of the detection box, and the cross-section of the fixing block is T-shaped.

[0010] Preferably, an auxiliary piece is fixedly installed at one end of the slider, the size of the auxiliary piece is adapted to the size of the slider, and the auxiliary piece is a rubber sheet.

[0011] Preferably, the surface of the testing box is provided with a plurality of slots, the plurality of slots are divided into two groups, the two groups of slots are symmetrically distributed about the testing box, and the inner wall of the slots is engaged with a limiting frame, the surface of the limiting frame being rotatably mounted to the inner wall of the mounting frame.

[0012] Preferably, a spring is fixedly connected to one end of the limiting frame, and the end of the spring away from the limiting frame is fixedly installed to the inner wall of the fixing frame.

[0013] Preferably, the shielding cover is an iron block, one end of the mounting bracket is rotatably connected to a rotating cover, and one end of the rotating cover is fixedly installed with two adsorption blocks, the adsorption blocks are magnetic blocks, and one end of the adsorption blocks is movably connected to the surface of the shielding cover.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] 1. By connecting the mounting bracket to the top of the detection box, and with a cover attached to the top of the mounting bracket, a handle is installed on the top of the cover to shield the top of the detection box, preventing impurities and dust from the external environment from contaminating the control components. Several sliders are installed on the inner wall of the mounting bracket to facilitate the separation of the sliders from the detection box and disassembly of the mounting bracket, making it more convenient to operate the control components. A sliding groove is formed on the inner wall of the mounting bracket, and a fixing block is slidably connected to the inner wall of the groove, so that the cover can be placed on one side of the detection box with the help of the fixing block and the groove, avoiding obstruction of the operator's operation. An auxiliary plate is installed at one end of the slider to increase the friction between the slider and the detection box. Compared with the existing technology, this effectively improves the protective effect of the exhaust gas detector.

[0016] 2. Several slots can also be made on the surface of the testing box. The inner wall of the slots is fitted with a limit frame to prevent the mounting frame from loosening during the handling of the testing box. A spring is installed at one end of the limit frame to keep it engaged with the slot. A rotating cover is rotatably connected to the surface of the mounting frame. A magnetic adsorption block is installed at one end of the rotating cover to cover one end of the mounting frame. The adsorption block improves the connection between the rotating cover and the mounting frame, effectively improving the performance of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a low-concentration particulate matter detection device in exhaust gas according to an embodiment of the application.

[0018] Figure 2 This is a schematic diagram of the mounting bracket structure in an embodiment of the application;

[0019] Figure 3 This is a side view of the embodiment of the application.

[0020] Figure 4 This is a schematic diagram of the structure at point A in the embodiment of the application.

[0021] Explanation of reference numerals in the attached drawings: 1. Detection box; 2. Connection hole; 3. Control component; 4. Mounting bracket; 5. Cover; 6. Handle; 7. Slider; 8. Fixing block; 9. Slide groove; 10. Auxiliary piece; 11. Slot; 12. Limiting bracket; 13. Spring; 14. Rotating cover; 15. Adsorption block. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 —4. This application will be described in further detail.

[0023] This application discloses a device for detecting low concentration particulate matter in exhaust gas, referring to... Figure 1 - Figure 2The device includes a detection box 1. During testing, the exhaust gas end is connected to the connection hole 2 inside the detection box 1. Several control components 3 are installed on the top of the detection box 1. The detection box 1 is operated by the control components 3, and the exhaust gas is detected through the detection box 1. The mounting frame 4 is connected to the top of the detection box 1. A cover 5 is connected to the top of the mounting frame 4. A handle 6 is installed on the top of the cover 5. The cover 5 covers the top of the detection box 1, preventing impurities and dust in the external environment from contaminating the control components 3 and affecting the use by the staff. The handle 6 makes it easy to carry the detection box 1, effectively improving the protective effect of the exhaust gas detector.

[0024] Reference Figure 2 The inner wall of the mounting frame 4 is equipped with several sliders 7. The surface of the sliders 7 is slidably connected to the surface of the test box 1. The sliders 7 facilitate the connection between the mounting frame 4 and the surface of the test box 1, and also facilitate the separation of the sliders 7 from the test box 1, making it easier to disassemble the mounting frame 4. This also makes it more convenient to operate the control component 3. The inner wall of the mounting frame 4 is provided with a sliding groove 9. A fixing block 8 is slidably connected to the inner wall of the sliding groove 9. One end of the fixing block 8 is connected to the surface of the test box 1. The fixing block 8 and the sliding groove 9 help to restrict the movement of the mounting frame 4, thereby ensuring the stability of the cover 5 after installation. The fixing block 8 also facilitates the rotation of the mounting frame 4, so that the cover 5 can be placed on one side of the test box 1, avoiding obstruction of the operator's operation. An auxiliary piece 10 is installed at one end of the slider 7. The auxiliary piece 10 increases the friction between the slider 7 and the test box 1, effectively improving the stability of the connection between the mounting frame 4 and the test box 1, and preventing the mounting frame 4 from causing wear on the surface of the test box 1.

[0025] Reference Figure 3 - Figure 4 Several slots 11 are formed on the surface of the testing box 1. A limiting frame 12 is engaged with the inner wall of each slot 11. The surface of the limiting frame 12 is rotatably connected to the inner wall of the mounting frame 4. By engaging the limiting frame 12 with the slots 11, the mounting frame 4 is connected to the top of the testing box 1, preventing the mounting frame 4 from becoming loose during transport of the testing box 1. A spring 13 is installed at one end of the limiting frame 12, and one end of the spring 13 is connected to the inner wall of the mounting frame 4. The spring 13 pushes the limiting frame 12. The movement keeps the limiting frame 12 engaged with the slot 11, thereby improving the connection effect between the limiting frame 12 and the slot 11. The surface of the mounting frame 4 is rotatably connected to a rotating cover 14. A magnetic adsorption block 15 is installed at one end of the rotating cover 14. One end of the adsorption block 15 is connected to the iron mounting frame 4. The rotating cover 14 blocks one end of the mounting frame 4, effectively improving the blocking effect of the mounting frame 4 on the detection box 1. The adsorption block 15 improves the connection effect between the rotating cover 14 and the mounting frame 4.

[0026] The implementation principle of the low-concentration particulate matter detection device in exhaust gas according to this application embodiment is as follows: A mounting frame 4 is connected to the top of the detection box 1. A cover 5 is connected to the top of the mounting frame 4, and a handle 6 is installed on the top of the cover 5. This allows the cover 5 to shield the top of the detection box 1, preventing impurities and dust from the external environment from contaminating the control components 3 and affecting the operator's use. The handle 6 also facilitates carrying the detection box 1. Several sliders 7 are installed on the inner wall of the mounting frame 4. The surface of the sliders 7 is slidably connected to the surface of the detection box 1, facilitating the connection between the mounting frame 4 and the surface of the detection box 1. Separating the sliders 7 from the detection box 1 allows for easy disassembly of the mounting frame 4. Component 3 is more convenient to operate. The inner wall of the mounting bracket 4 is provided with a sliding groove 9, and a fixing block 8 is slidably connected to the inner wall of the sliding groove 9. One end of the fixing block 8 is connected to the surface of the test box 1, so that the movement position of the mounting bracket 4 can be easily restricted by the fixing block 8 and the sliding groove 9, thereby ensuring the stability of the cover 5 after installation. The fixing block 8 also facilitates the rotation of the mounting bracket 4, so that the cover 5 can be placed on one side of the test box 1, avoiding obstruction of the operator's operation. An auxiliary piece 10 is installed at one end of the slider 7, so as to increase the friction between the slider 7 and the test box 1, effectively improving the stability of the connection between the mounting bracket 4 and the test box 1, and avoiding wear on the surface of the test box 1 caused by the mounting bracket 4.

[0027] Several slots 11 can also be made on the surface of the testing box 1. The inner wall of the slot 11 is engaged with a limiting frame 12. The surface of the limiting frame 12 is rotatably connected to the inner wall of the mounting frame 4, so that the limiting frame 12 can be engaged with the slot 11, thereby connecting the mounting frame 4 to the top of the testing box 1 and preventing the mounting frame 4 from becoming loose when the testing box 1 is moved. A spring 13 is installed at one end of the limiting frame 12, and one end of the spring 13 is connected to the inner wall of the mounting frame 4, so that the limiting frame 12 can be engaged with the spring 13. The movement pushes the limit frame 12 to remain engaged with the slot 11, thereby improving the connection effect between the limit frame 12 and the slot 11. A rotating cover 14 is rotatably connected to the surface of the mounting frame 4. A magnetic adsorption block 15 is installed at one end of the rotating cover 14. One end of the adsorption block 15 is connected to the iron mounting frame 4, so that one end of the mounting frame 4 can be blocked by the rotating cover 14, effectively improving the blocking effect of the mounting frame 4 on the detection box 1. The connection effect between the rotating cover 14 and the mounting frame 4 is improved by the adsorption block 15.

[0028] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for detecting low concentration particulate matters in exhaust gas, comprising a detection box (1) and a mounting frame (4), characterized in that: The detection box (1) has a connection hole (2) at one end, and several control components (3) are fixedly installed on the top of the detection box (1). A cover (5) is fixedly connected to the top of the mounting frame (4). The size of the bottom of the cover (5) is compatible with the size of the top of the mounting frame (4). A handle (6) is fixedly installed on the top of the cover (5). Several sliders (7) are fixedly connected to one end of the mounting frame (4). 2.The device for detecting low-concentration particulate matters in exhaust gas according to claim 1, characterized in that: The inner wall of the mounting bracket (4) is slidably installed on the top of the test box (1), and the dimensions of the inner wall of the mounting bracket (4) are compatible with the dimensions of the top of the test box (1). The cross-section of the shield (5) is a "V" shaped structure. 3.The device of claim 1, wherein: The surface of the slider (7) is slidably connected to the surface of the detection box (1). Several sliders (7) are divided into two groups, and the two groups of sliders (7) are symmetrically distributed about the detection box (1).

4. The device according to claim 1, wherein: The mounting bracket (4) has two grooves (9) on its surface. The two grooves (9) are symmetrically distributed about the mounting bracket (4). A fixing block (8) is slidably installed on the inner wall of the groove (9). One end of the fixing block (8) is fixedly connected to the surface of the detection box (1), and the cross-section of the fixing block (8) is a "T" shaped structure.

5. The device according to claim 1, wherein: An auxiliary piece (10) is fixedly installed at one end of the slider (7). The size of the auxiliary piece (10) is compatible with the size of the slider (7), and the auxiliary piece (10) is a rubber sheet.

6. The device according to claim 1, wherein: The surface of the test box (1) is provided with a number of slots (11). The slots (11) are divided into two groups. The two groups of slots (11) are symmetrically distributed about the test box (1). The inner wall of the slot (11) is engaged with a limiting frame (12). The surface of the limiting frame (12) is rotatably mounted to the inner wall of the mounting frame (4).

7. The device according to claim 6, wherein: One end of the limiting frame (12) is fixedly connected to a spring (13), and the end of the spring (13) away from the limiting frame (12) is fixedly installed to the inner wall of the fixing frame. 8.The device of claim 1, wherein: The shielding cover (5) is an iron block. One end of the mounting bracket (4) is rotatably connected to a rotating cover (14). Two adsorption blocks (15) are fixedly installed on one end of the rotating cover (14). The adsorption blocks (15) are magnetic blocks, and one end of the adsorption blocks (15) is movably connected to the surface of the shielding cover (5).

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