High-accuracy smoke sampling device

Abstract

The utility model relates to the technical field of smoke dust sampling, and discloses a high-accuracy smoke dust sampling device which comprises a smoke dust extractor, a sample tube and a sampling tube, the front side of the smoke dust extractor is fixedly connected with an air suction tube, sampling filter paper is fixedly mounted in the sample tube, and matched tube covers are arranged on the front side and the rear side of the sample tube. According to the utility model, the sampling pipe and the air suction pipe are mounted in the corresponding mounting holes, at the moment, the convex rod I and the convex rod II eject the corresponding baffle discs, so that the baffle discs move and extrude the springs, and the mounting holes are opened so as to collect smoke dust, and after sampling is completed, the sampling pipe and the air suction pipe are taken out from the corresponding mounting holes, so that the sampling pipe and the air suction pipe are taken out. The baffle disc can be driven to reset through the elastic force of the spring, the baffle disc is attached to the mounting hole, and the mounting hole can be blocked, so that the sample tube is automatically sealed after smoke dust sampling is completed, the situation that smoke dust leaks out of the sample tube is prevented, and the sampling accuracy is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of soot sampling, in particular to a high-accuracy soot sampling device. Background Technique

[0002] Soot is solid particles suspended in gas formed during the thermal processes of oxidation, sublimation, evaporation and condensation. For example, converter flue gas contains a large amount of extremely fine soot, and a large soot storm will be rolled up when a severely desertified area is blown by strong wind; when conducting environmental detection, a soot sampling device will be used to sample soot in the corresponding area. The soot sampling device mainly inhales the air in the area into the sample tube through an air pump, makes the air pass through the sampling filter paper and discharge from the sample tube, and the soot in the air will adhere to the sampling filter paper for collection and sampling.

[0003] In the patent document with the published publication number of CN207882015U, a soot sampling device is disclosed. In this published patent document, through a tangent arc tube and a cylindrical tube, soot is collected in the filter membrane, and the soot can be evenly distributed on the filter membrane, which is convenient for the staff to directly irradiate the filter membrane with X-ray fluorescence on site, so as to obtain the concentration of specific heavy metals, saving the complicated work process in the laboratory and saving time; however, in the above published patent document, when the soot sampling is completed and not detected, since the area where the filter membrane is located cannot be sealed, some of the soot adhering to the filter membrane will leak out through the cylindrical tube, the arc tube and the sampling head, resulting in some differences between the detected soot and the sampled soot, and the sampling accuracy is low. Content of the Utility Model

[0004] The purpose of the utility model is to provide a high-accuracy soot sampling device, which solves the problems put forward in the background technique.

[0005] The embodiment of the present application provides a high-accuracy soot sampling device, including a soot extractor, a sample tube and a sampling tube. An air suction tube is fixedly connected to the front side of the soot extractor. A sampling filter paper is fixedly installed inside the sample tube, and matching tube caps are arranged on the front and rear sides of the sample tube. Installation holes matching the sampling tube and the air suction tube are opened on the tube caps. A baffle plate is arranged on the side of the tube cap inside the sample tube. A limiting shaft penetrates through and is slidably connected to the baffle plate. One end of the limiting shaft is fixedly connected to the tube cap, and the other end of the limiting shaft is fixedly connected to a disc. A spring is sleeved on the limiting shaft. One end of the spring is fixedly connected to the baffle plate, and the other end of the spring is fixedly connected to the disc. Two convex rods one are fixedly connected to the rear side of the air suction tube, and two convex rods two are fixedly connected to the front side of the sampling tube.

[0006] By adopting the above technical solution, the sampling tube and the suction tube are installed into the corresponding installation holes. The first convex rod and the second convex rod will push open the corresponding blocking disks, opening the installation holes for collecting soot. After sampling, the sampling tube and the suction tube are taken out from the corresponding installation holes. Then, the elastic force of the spring can drive the blocking disks to reset, making the blocking disks adhere to the installation holes, thus blocking the installation holes. Therefore, after the soot sampling is completed, the sample tube can be automatically sealed to prevent soot from leaking out of the sample tube and ensure the accuracy of sampling.

[0007] Optionally, internal threads one are provided on the inner walls of the front and rear sides of the sample tube, external threads two are provided on the outer wall of the tube cap, and the internal threads one and the external threads two are adapted to each other. Internal threads five are provided on the inner wall of the installation hole, external threads four are provided on the rear outer wall of the suction tube, and external threads three are provided on the front outer wall of the sampling tube. The external threads four and three and the internal threads five are all adapted to each other.

[0008] By adopting the above technical solution, the internal threads one and the external threads two facilitate the installation and disassembly of the tube cap and the sample tube, thus facilitating the opening and closing of the sample tube and the detection of the sampled soot. Moreover, the external threads four, three and the internal threads five facilitate the installation and disassembly of the sample tube with the soot sampler and the sampling tube, facilitating the replacement of the sample tube, and thus facilitating rapid multiple soot samplings.

[0009] Optionally, a support frame is fixedly installed inside the sample tube, and the support frame contacts the sampling filter paper.

[0010] By adopting the above technical solution, the sampling filter paper is supported to prevent damage to the sampling filter paper during suction sampling.

[0011] Optionally, an air pump is provided inside the soot sampler, and a plurality of exhaust holes are provided at the rear side of the soot sampler. The intake end of the air pump is communicated with the suction tube, and the exhaust end of the air pump is communicated with the exhaust holes.

[0012] By adopting the above technical solution, the air inside the sample tube can be sucked out, making the sample tube form a negative pressure so that the sampled soot can enter the sample tube through the sampling tube.

[0013] Optionally, a handle is fixedly connected to the bottom of the soot sampler, and finger grooves are provided on the handle.

[0014] By adopting the above technical solution, it is convenient to hold the soot sampling device and convenient to carry.

[0015] Optionally, a switch is provided on the handle, and the switch is used to control the operation of the air pump.

[0016] By adopting the above technical solution, it is convenient to control the operation of the soot sampling device.

[0017] Optionally, a first sealing ring is fixedly connected to the outer wall of the air suction pipe, and a second sealing ring is fixedly connected to the outer wall of the sampling pipe.

[0018] By adopting the above technical solutions, the sealing performance after the installation of the air suction pipe is increased, and the sealing performance after the installation of the sampling pipe is increased.

[0019] Compared with the prior art, the beneficial effects of the technical solution of the present application are as follows:

[0020] 1. By installing the sampling pipe and the air suction pipe into the corresponding installation holes, at this time, the first convex rod and the second convex rod will push open the corresponding baffle plates, causing the baffle plates to move and compress the springs, opening the installation holes for collecting soot. After sampling is completed, when the sampling pipe and the air suction pipe are removed from the corresponding installation holes, the baffle plates can be driven to reset by the elastic force of the springs, so that the baffle plates are attached to the installation holes, blocking the installation holes, thereby automatically closing the sample tube after soot sampling is completed, preventing soot from leaking out of the sample tube, and ensuring the accuracy of sampling.

[0021] 2. The installation and disassembly of the pipe cover and the sample tube are facilitated through the first thread and the second thread, thus facilitating the opening and closing of the sample tube and facilitating the detection of the sampled soot. Moreover, through the fourth thread, the third thread and the fifth thread, the installation and disassembly of the air suction pipe and the sampling pipe with the corresponding installation holes are facilitated, thereby facilitating the installation and disassembly of the sample tube with the soot extractor and the sampling pipe, facilitating the replacement of the sample tube, and enabling multiple soot samplings to be carried out conveniently and quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] By reading the following detailed description of the non-restrictive embodiments with reference to the accompanying drawings, other features, objects and advantages of the present utility model will become more apparent:

[0023] Figure 1 is a schematic structural diagram of the present utility model;

[0024] Figure 2 is a schematic structural diagram of the sample tube of the present utility model;

[0025] Figure 3 is a schematic structural diagram of two pipe covers of the present utility model;

[0026] Figure 4 is the present utility model Figure 1 the enlarged view of A in;

[0027] Figure 5 is the present utility model Figure 2 the enlarged view of B in.

[0028] In the figure: 1, a smoke and dust collector; 2, a sample tube; 3, a sampling tube; 4, a handle; 5, a switch; 6, a finger groove; 7, an exhaust hole; 8, an air suction pipe; 9, a pipe cap; 10, a mounting hole; 11, thread five; 12, a sampling filter paper; 13, a support frame; 14, thread one; 15, thread two; 16, a retaining disc; 17, a limiting shaft; 18, a disc; 19, a spring; 20, a convex rod one; 21, thread four; 22, a sealing ring one; 23, a convex rod two; 24, thread three; 25, a sealing ring two. Specific implementation manner

[0029] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0030] Please refer to Figures 1-5 , the present utility model provides a technical solution: including a smoke and dust collector 1, a sample tube 2 and a sampling tube 3. An air suction pipe 8 is fixedly connected to the front side of the smoke and dust collector 1. A sampling filter paper 12 is fixedly installed inside the sample tube 2. Pipe caps 9 that match are provided on both the front and rear sides of the sample tube 2. Mounting holes 10 that match the sampling tube 3 and the air suction pipe 8 are opened on the pipe caps 9. A retaining disc 16 is provided on one side of the pipe cap 9 inside the sample tube 2. A limiting shaft 17 penetrates through and is slidably connected to the retaining disc 16. One end of the limiting shaft 17 is fixedly connected to the pipe cap 9, and the other end of the limiting shaft 17 is fixedly connected to a disc 18. A spring 19 is sleeved on the limiting shaft 17. One end of the spring 19 is fixedly connected to the retaining disc 16, and the other end of the spring 19 is fixedly connected to the disc 18. Two convex rods one 20 are fixedly connected to the rear side of the air suction pipe 8, and two convex rods two 23 are fixedly connected to the front side of the sampling tube 3;

[0031] In this technical solution, by installing the sampling tube 3 into the front mounting hole 10 and the air suction pipe 8 into the rear mounting hole 10, at this time, the convex rod one 20 and the convex rod two 23 will push open the corresponding retaining disc 16, causing the retaining disc 16 to move and compress the spring 19. At this time, the mounting hole 10 is opened for collecting smoke and dust. When the smoke and dust inhaled into the sample tube 2 adheres to the sampling filter paper 12, then the sampling tube 3 and the air suction pipe 8 are taken out from the corresponding mounting holes 10. The elastic force of the spring 19 can drive the retaining disc 16 to reset, making the retaining disc 16 adhere to the mounting hole 10, thereby blocking the mounting hole 10. Thus, after the smoke and dust sampling is completed, the sample tube 2 is automatically sealed to prevent the smoke and dust from leaking out of the sample tube 2, ensuring the accuracy of sampling.

[0032] In some technical solutions, such as Figures 1-5As shown, the front and rear inner walls of the sample tube 2 are provided with thread one 14, the outer wall of the tube cover 9 is provided with thread two 15, thread one 14 and thread two 15 are matched, the inner wall of the mounting hole 10 is provided with thread five 11, the rear outer wall of the suction tube 8 is provided with thread four 21, and the front outer wall of the sampling tube 3 is provided with thread three 24, and thread four 21 and thread three 24 are both matched with thread five 11.

[0033] When in use, thread one 14 and thread two 15 facilitate installation and disassembly of the tube cover 9 and the sample tube 2, thereby facilitating opening and closing of the sample tube 2 and facilitating detection of the sampled smoke, and thread four 21, thread three 24 and thread five 11 facilitate installation and disassembly of the suction tube 8 and the sampling tube 3 and the corresponding mounting holes 10, thereby facilitating installation and disassembly of the sample tube 2 and the smoke extractor 1 and the sampling tube 3, facilitating replacement of the sample tube 2, and conveniently and quickly performing multiple smoke samplings.

[0034] In some technical solutions, such as Figure 2 As shown, a support frame 13 is fixedly installed inside the sample tube 2 , and the support frame 13 is in contact with the sampling filter paper 12 .

[0035] When in use, the support frame 13 can support the sampling filter paper 12 to prevent the sampling filter paper 12 from being damaged during inhalation sampling.

[0036] In some technical solutions, such as Figure 1 As shown, an air pump is arranged inside the smoke extractor 1, and a plurality of exhaust holes 7 are opened on the rear side of the smoke extractor 1. The air inlet end of the air pump is connected to the air suction pipe 8, and the exhaust end of the air pump is connected to the exhaust hole 7.

[0037] When in use, the air in the sample tube 2 can be sucked out by connecting the air pump with the suction pipe 8 and the exhaust hole 7, so that a negative pressure is formed in the sample tube 2, so that the sampled smoke and dust can enter the sample tube 2 through the sampling tube 3.

[0038] In some technical solutions, such as Figure 1 As shown, a handle 4 is fixedly connected to the bottom of the smoke extractor 1 , and a finger groove 6 is formed on the handle 4 .

[0039] When in use, the smoke sampling device can be conveniently held through the finger groove 6 on the handle 4, so that it is convenient to carry.

[0040] In some technical solutions, such as Figure 1 As shown, a switch 5 is provided on the handle 4, and the switch 5 is used to control the operation of the air pump.

[0041] When in use, it is convenient to control the operation of the smoke sampling device.

[0042] In some technical solutions, such as Figure 4 and Figure 5As shown, a first sealing ring 22 is fixedly connected to the outer wall of the suction pipe 8, and a second sealing ring 25 is fixedly connected to the outer wall of the sampling pipe 3.

[0043] During use, the first sealing ring 22 increases the sealing performance after the installation of the suction pipe 8, and the second sealing ring 25 increases the sealing performance after the installation of the sampling pipe 3.

[0044] Working principle: During use, through the fourth thread 21, the third thread 24, and the fifth thread 11, the suction pipe 8 and the sampling pipe 3 are respectively installed in the corresponding installation holes 10. At this time, the first convex rod 20 and the second convex rod 23 will push open the corresponding retaining disks 16, causing the retaining disks 16 to move and compress the springs 19. At this time, the installation holes 10 are opened for collecting soot. The air pump can suck out the air in the sample tube 2, creating a negative pressure in the sample tube 2. The sampled soot enters the sample tube 2 through the sampling pipe 3. When the soot inhaled into the sample tube 2 adheres to the sampling filter paper 12, the sampling pipe 3 and the suction pipe 8 are removed from the corresponding installation holes 10. Then, the elastic force of the spring 19 can drive the retaining disk 16 to reset, causing the retaining disk 16 to adhere to the installation hole 10, thus blocking the installation hole 10. Therefore, after the soot sampling is completed, the sample tube 2 is automatically sealed to prevent soot from leaking out of the sample tube 2 and ensure the accuracy of sampling.

[0045] The above are only the preferred embodiments of the present application and are not used to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high-accuracy soot sampling device, comprising a soot extractor (1), a sample tube (2) and a sampling tube (3), characterized in that: The front side of the dust extractor (1) is fixedly connected with an air suction pipe (8). Inside the sample tube (2), a sampling filter paper (12) is fixedly installed. Pipe caps (9) that match each other are arranged on the front and rear sides of the sample tube (2). Mounting holes (10) that match the sampling tube (3) and the air suction pipe (8) are formed in the pipe caps (9). A baffle plate (16) is arranged on one side of the pipe cap (9) inside the sample tube (2). A limiting shaft (17) penetrates through and is slidably connected to the baffle plate (16). One end of the limiting shaft (17) is fixedly connected to the pipe cap (9), and the other end of the limiting shaft (17) is fixedly connected to a disc (18). A spring (19) is sleeved on the limiting shaft (17). One end of the spring (19) is fixedly connected to the baffle plate (16), and the other end of the spring (19) is fixedly connected to the disc (18). Two first convex rods (20) are fixedly connected to the rear side of the air suction pipe (8). Two second convex rods (23) are fixedly connected to the front side of the sampling tube (3).

2. The high-accuracy flue dust sampling device according to claim 1, wherein Threads one (14) are arranged on the inner walls of the front and rear sides of the sample tube (2). Threads two (15) are arranged on the outer wall of the pipe cap (9). The threads one (14) and the threads two (15) are adapted to each other. Threads five (11) are arranged on the inner wall of the mounting hole (10). Threads four (21) are arranged on the outer wall of the rear side of the air suction pipe (8). Threads three (24) are arranged on the outer wall of the front side of the sampling tube (3). The threads four (21) and the threads three (24) are both adapted to the threads five (11).

3. The high-accuracy soot sampling device according to claim 1, characterized in that, A support frame (13) is fixedly installed inside the sample tube (2). The support frame (13) contacts the sampling filter paper (12).

4. The high-accuracy soot sampling device according to claim 1, characterized in that, An air pump is arranged inside the dust extractor (1). A number of exhaust holes (7) are formed in the rear side of the dust extractor (1). The air inlet end of the air pump is communicated with the air suction pipe (8), and the air outlet end of the air pump is communicated with the exhaust holes (7).

5. A highly accurate soot sampling device according to claim 1, characterized in that, A handle (4) is fixedly connected to the bottom of the dust extractor (1). Finger grooves (6) are formed in the handle (4).

6. The high-accuracy soot sampling device according to claim 5, characterized in that, A switch (5) is arranged on the handle (4). The switch (5) is used to control the operation of the air pump.

7. A highly accurate soot sampling device according to claim 1, characterized in that, A first sealing ring (22) is fixedly connected to the outer wall of the air suction pipe (8). A second sealing ring (25) is fixedly connected to the outer wall of the sampling tube (3).

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