Wall type aerosol total dust sampling device

Abstract

In order to solve the technical problem that the existing sampling device cannot be suitable for strong vibration and strong impact environments, the utility model provides a wall type aerosol total dust sampling device which comprises a fixed plate, a bracket and a sampling unit, the fixing plate is used for being installed on the outer side of a wall of a closed space, and a plurality of first through holes are formed in the fixing plate. The support is vertically installed on the side, away from the wall, of the fixing plate. The sampling unit comprises an air extractor and at least one total dust filter mounted on the bracket; each total dust filter is provided with an air inlet nozzle and an air outlet nozzle; an air inlet pipe is mounted on the air inlet nozzle, and the air inlet end of the air inlet pipe penetrates through the corresponding first through hole and the wall and then extends into the closed space; the air outlet nozzle is communicated with the air exhaust end of the air exhaust device through an air outlet pipe; each air outlet pipe is provided with a control valve, and the control valves are installed on the support. And the air extractor and the control valve are respectively connected with an external control device.

Description

Technical Field

[0001] The utility model relates to an aerosol sampling technology, in particular to a wall-type aerosol total dust sampling device. Background Art

[0002] Aerosols are colloidal dispersions formed by small solid or liquid particles ranging in size from 0.001 to 100 μm dispersed and suspended in a gas medium. Aerosols not only affect the climate but are also a major source of atmospheric pollution.

[0003] There are two methods for characterizing aerosols: particle concentration and particle size distribution. In order to obtain aerosol concentration and particle size distribution, it is sometimes necessary to sample and detect aerosols in a confined space. The existing conventional detection method is to set up a sampler inside the confined space for sampling. When it is necessary to obtain the distribution of aerosols in a confined space, it is necessary to distribute multiple samplers in the confined space, and analyze the concentration distribution through the aerosols collected by each sampler. However, for aerosols close to the walls in a confined space, there is currently no dedicated equipment for collection. Usually, a temporary bracket is set up on the wall, and a traditional sampler is placed on the bracket to achieve aerosol sampling. This sampling method is often not applicable when facing strong vibration and strong impact conditions. Utility Model Content

[0004] In order to solve the technical problem that existing sampling devices cannot be applied to strong vibration and strong impact environments, the utility model provides a wall-mounted aerosol total dust sampling device, which is installed on the outside of the wall to sample aerosols near the wall in a confined space. Since it is directly fixed on the wall, it has higher seismic resistance.

[0005] The technical solutions of this utility model are as follows:

[0006] A wall-mounted aerosol total dust sampling device is characterized in that it comprises a fixing plate, a bracket and a sampling unit;

[0007] The fixing plate is used to be installed on the outside of the wall of the enclosed space, and a plurality of first through holes are opened on the fixing plate;

[0008] The bracket is vertically mounted on a side of the fixing plate away from the wall;

[0009] The sampling unit includes an air extraction device and at least one total dust filter mounted on a bracket; each total dust filter is provided with an air inlet nozzle and an air outlet nozzle; an air inlet pipe is mounted on the air inlet nozzle, and the air inlet end of the air inlet pipe passes through the corresponding first through hole and the wall and then extends into the enclosed space, so as to collect aerosol samples near the wall; the air outlet nozzle is connected to the air extraction end of the air extraction device via an air outlet pipe; each air outlet pipe is provided with a control valve, which is mounted on the bracket and is used to adjust the air output of the corresponding total dust filter;

[0010] The air extraction device is arranged outside the enclosed space; and the air extraction device and the control valve are respectively connected to an external control device.

[0011] Furthermore, the bracket is a rectangular frame structure; the control valve is installed inside the bracket; and the total dust filter is installed on the upper part of the bracket.

[0012] Furthermore, the control valve is installed inside the bracket through a base plate; the base plate is a rectangular plate, and first shock-absorbing pads are installed at the four corners of its bottom; first support plates are provided at the four corners of the bottom of the bracket, and the first shock-absorbing pads are connected to the corresponding first support plates.

[0013] Furthermore, the total dust filter is installed on the upper part of the bracket through the top plate; the top plate is a rectangular plate, and second shock-absorbing pads are installed at the four corners of its bottom; second support plates are provided at the four corners of the top of the bracket, and the second shock-absorbing pads are connected to the corresponding second support plates.

[0014] Furthermore, the first shock-absorbing pad and the second shock-absorbing pad are both cylindrical rubber pads.

[0015] Furthermore, it also includes an air collecting pipe; the air inlet end of the air collecting pipe is connected to the air outlet end of each air outlet pipe respectively, and the air outlet end is connected to the air extraction end of the air extraction device.

[0016] Furthermore, it also includes a protective cover mounted on the fixed plate, the protective cover and the fixed plate enclose a closed cavity, and the bracket, the total dust filter, and the control valve are all located in the closed cavity;

[0017] A second through hole is provided on the protective cover, and the gas outlet end of the gas collecting pipe passes through the second through hole and is communicated with the gas extraction end of the gas extraction device.

[0018] Furthermore, a vertical mounting plate is fixed to one end of the bracket away from the fixing plate, a mounting hole is provided on the mounting plate, and the gas collecting pipe is fixed to the mounting plate through the mounting hole.

[0019] Furthermore, the protective cover is provided with a mounting interface for leading out the control valve connection line.

[0020] Furthermore, the control valve is a solenoid valve; and the air extraction device is an air pump.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The utility model includes a fixing plate, a bracket and a sampling unit. The sampling unit includes an exhaust device and at least one total dust filter. By installing the fixing plate on the outside of the wall of the enclosed space, then installing the bracket on the fixing plate, and finally installing the total dust filter on the bracket, the sampling device is fixed on the wall as a whole. Therefore, the seismic performance is greatly improved. It is not only suitable for conventional environments, but also for sampling in strong vibration and strong impact environments.

[0023] 2. The bracket of the utility model is a rectangular frame structure. The control valve is installed inside the bracket and the total dust filter is installed on the upper part of the bracket. It is not only easy to install, but also the overall structure is more compact and more conducive to fixing on the wall.

[0024] 3. In the present invention, a first shock-absorbing pad is provided between the bottom plate where the control valve is installed and the bracket, and a second shock-absorbing pad is provided between the top plate where the total dust filter is installed and the bracket, which further improves the overall shock resistance of the sampling device.

[0025] 4. The air inlet end of the air collecting pipe of the utility model is connected to the air outlet end of each air outlet pipe respectively, and the air outlet end is connected to the air extraction end of the air extraction device. The setting of the air collecting pipe makes the connection process of the overall structure simpler.

[0026] 5. The utility model also includes a protective cover installed on the fixed plate, which can protect the bracket, the total dust filter, and the control valve, thereby improving the stability of their operation.

[0027] 6. The utility model can be installed at different positions on the outside of the wall of a confined space to collect the distribution of aerosols. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model (the air extraction device is omitted in the figure);

[0029] Figure 2 This is a schematic diagram of the internal structure of the embodiment of the utility model Figure 1 ;

[0030] Figure 3 This is a schematic diagram of the internal structure of the embodiment of the utility model Figure 2 ;

[0031] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle;

[0032] Figure 5 yes Figure 3 A partial enlarged view of point B in the middle.

[0033] The reference numerals are as follows:

[0034] 100-fixing plate, 110-first through hole, 200-bracket, 201-mounting plate, 202-first support plate, 203-second support plate, 211-gas collecting pipe, 300-total dust filter, 301-inlet pipe, 302-outlet pipe, 400-control valve, 500-bottom plate, 501-first shock-absorbing pad, 600-top plate, 601-second shock-absorbing pad, 700-protective cover, 701-second through hole. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below in combination with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] Reference Figures 1 to 5 This embodiment provides a wall-mounted aerosol total dust sampling device, including a fixing plate 100, a bracket 200 and a sampling unit.

[0037] The fixing plate 100 is installed on the outside of the wall of the enclosed space, and a plurality of first through holes 110 are opened on the fixing plate 100; the bracket 200 is vertically installed on the side of the fixing plate 100 away from the wall.

[0038] The sampling unit includes an exhaust device (not shown) and at least one total dust filter 300 mounted on a bracket 200. To improve sampling efficiency, this embodiment includes three total dust filters 300, which are mounted side by side on the bracket 200. The fixing plate 100 is provided with three corresponding first through holes 110.

[0039] Each total dust filter 300 is provided with an air inlet nozzle and an air outlet nozzle; an air inlet pipe 301 is installed on the air inlet nozzle, and the air inlet end of the air inlet pipe 301 passes through the corresponding first through hole 110 and the wall and extends into the enclosed space, for collecting aerosol samples near the wall.

[0040] The air outlet of each total dust filter 300 is connected to the air extraction end of the air extraction device through an air outlet pipe 302. Each air outlet pipe 302 is provided with a control valve 400, which is installed on the bracket 200 and is used to adjust the air output of the corresponding total dust filter 300.

[0041] In this embodiment, there are three control valves 400, and all of them are solenoid valves. During the sampling process, the three control valves 400 can be opened at the same time to achieve high-flow sampling, or one control valve 400 can be opened to achieve low-flow sampling.

[0042] The air extraction device can be buried underground; the air extraction device and the control valve 400 are respectively connected to an external control device, and the control device controls the opening and closing of the air extraction device and the control valve 400. In this embodiment, the air extraction device is an air pump.

[0043] During use, the fixing plate 100 is installed on the outside of the wall so that the air inlet pipe 301 extends into the inside of the wall. The control valve 400 is opened by the control device, and the exhaust device is controlled to exhaust air. The aerosol will pass through the air inlet pipe 301 and enter the corresponding total dust filter 300. The aerosol particles are intercepted by the total dust filter 300 to achieve sampling. The device samples aerosols near the wall by being installed on the outside of the wall. Since it is directly fixed to the wall, its seismic resistance is also higher. When it is necessary to detect the aerosol distribution in the entire enclosed space, the sampling device is installed at different positions on the outside of the wall of the enclosed space to collect the aerosol distribution in the enclosed space.

[0044] In some embodiments, the gas outlet ends of the gas outlet pipes 302 are integrated together through the gas collecting pipe 211 and communicated with the gas extraction device, making the overall structure simpler.

[0045] Specifically, a vertical mounting plate 201 is fixed to one end of the bracket 200 away from the fixed plate 100, and a mounting hole is provided on the mounting plate 201. The air collecting pipe 211 is fixed on the mounting plate 201 through the mounting hole. The air inlet end of the air collecting pipe 211 is respectively connected to the air outlet end of each air outlet pipe 302, and the air outlet end is connected to the air extraction end of the air extraction device.

[0046] In order to make the entire structure more compact, improve space utilization, and reduce the volume of the entire device, in some embodiments, the bracket 200 is a rectangular frame structure, the control valve 400 is installed inside the bracket 200, and the total dust filter 300 is installed on the upper part of the bracket 200.

[0047] Specifically, the bracket 200 is a rectangular frame welded from profiles, and the total dust filter 300 and the control valve 400 are distributed in the upper and lower directions on the bracket 200, effectively utilizing the space inside the bracket 200 for installing the control valve 400.

[0048] In order to improve the seismic performance of the sampling device, in some embodiments, the control valve 400 is installed inside the bracket 200 through the bottom plate 500 , and a first shock-absorbing pad 501 is provided between the bottom plate 500 and the bracket 200 .

[0049] Specifically, the bottom plate 500 is a rectangular plate, and first shock-absorbing pads 501 are installed at the four corners of its bottom; first support plates 202 are respectively provided at the four corners of the bottom of the bracket 200, and the first shock-absorbing pads 501 are connected to the corresponding first support plates 202.

[0050] In some embodiments, the total dust filter 300 is installed on the top of the bracket 200 through the top plate 600 , and a second shock-absorbing pad 601 is provided between the top plate 600 and the bracket 200 .

[0051] Specifically, the top plate 600 is a rectangular plate, and second shock-absorbing pads 601 are installed at the four corners of its bottom; second support plates 203 are respectively provided at the four corners of the top of the bracket 200, and the second shock-absorbing pads 601 are connected to the corresponding second support plates 203.

[0052] In this embodiment, the first shock-absorbing pad 501 and the second shock-absorbing pad 601 are both cylindrical rubber pads.

[0053] This embodiment also includes a protective cover 700 installed on the fixed plate 100. The protective cover 700 and the fixed plate 100 form a closed cavity. The bracket 200, the total dust filter 300, and the control valve 400 are all located in the closed cavity to avoid interference with the external environment on its working stability.

[0054] The protective cover 700 is provided with a second through hole 701, through which the outlet of the gas collecting pipe 211 is connected to the exhaust end of the exhaust device. The protective cover 700 is also provided with an installation interface for leading out the connection line of the control valve 400.

[0055] Based on the above embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work should fall within the scope of protection of this utility model.

Claims

1. A wall-mounted aerosol total dust sampling device, characterized by: It includes a fixing plate (100), a bracket (200) and a sampling unit; The fixing plate (100) is used to be installed on the outside of a wall of a closed space, and a plurality of first through holes (110) are formed on the fixing plate (100); The bracket (200) is vertically mounted on a side of the fixing plate (100) away from the wall; The sampling unit comprises an air extraction device and at least one total dust filter (300) mounted on a bracket (200); an air inlet nozzle and an air outlet nozzle are respectively provided on each total dust filter (300); an air inlet pipe (301) is installed on the air inlet nozzle, and the air inlet end of the air inlet pipe (301) passes through the corresponding first through hole (110) and the wall and extends into the closed space, so as to collect aerosol samples near the wall; the air outlet nozzle is connected to the air extraction end of the air extraction device via an air outlet pipe (302); a control valve (400) is respectively provided on each air outlet pipe (302), and the control valve (400) is mounted on the bracket (200) and is used to adjust the air outlet volume of the corresponding total dust filter (300); The air extraction device is arranged outside the enclosed space, and the air extraction device and the control valve (400) are respectively connected to an external control device.

2. The wall-mounted aerosol total dust sampling device according to claim 1, characterized in that: The bracket (200) is a rectangular frame structure; the control valve (400) is installed inside the bracket (200); and the total dust filter (300) is installed on the upper part of the bracket (200).

3. The wall-mounted aerosol total dust sampling device according to claim 2, characterized in that: The control valve (400) is installed inside the bracket (200) through the bottom plate (500); The bottom plate (500) is a rectangular plate, and first shock-absorbing pads (501) are respectively installed at the four corners of the bottom thereof; first support plates (202) are respectively provided at the four corners of the bottom of the bracket (200), and the first shock-absorbing pads (501) are connected to the corresponding first support plates (202).

4. The wall-mounted aerosol total dust sampling device according to claim 3, characterized in that: The total dust filter (300) is installed on the upper part of the bracket (200) through the top plate (600); The top plate (600) is a rectangular plate, and second shock-absorbing pads (601) are respectively installed at the four corners of its bottom; second support plates (203) are respectively provided at the four corners of the top of the bracket (200), and the second shock-absorbing pads (601) are connected to the corresponding second support plates (203).

5. The wall-mounted aerosol total dust sampling device according to claim 4, characterized in that: The first shock-absorbing pad (501) and the second shock-absorbing pad (601) are both cylindrical rubber pads.

6. The wall-mounted aerosol total dust sampling device according to any one of claims 1 to 5, characterized in that: It also includes an air collecting pipe (211); the air inlet end of the air collecting pipe (211) is respectively connected to the air outlet end of each air outlet pipe (302), and the air outlet end is connected to the air extraction end of the air extraction device.

7. The wall-mounted aerosol total dust sampling device according to claim 6, characterized in that: It also includes a protective cover (700) mounted on the fixed plate (100), the protective cover (700) and the fixed plate (100) enclosing a closed cavity, and the bracket (200), the total dust filter (300), and the control valve (400) are all located in the closed cavity; The protective cover (700) is provided with a second through hole (701), and the gas outlet end of the gas collecting pipe (211) passes through the second through hole (701) and is communicated with the gas extraction end of the gas extraction device.

8. The wall-mounted aerosol total dust sampling device according to claim 7, characterized in that: A vertical mounting plate (201) is fixed to one end of the bracket (200) away from the fixing plate (100), and a mounting hole is provided on the mounting plate (201), through which the gas collecting pipe (211) is fixed to the mounting plate (201).

9. The wall-mounted aerosol total dust sampling device according to claim 8, characterized in that: The protective cover (700) is also provided with a mounting interface for leading out the connection line of the control valve (400).

10. The wall-mounted aerosol total dust sampling device according to claim 9, characterized in that: The control valve (400) is a solenoid valve; The air extraction device is an air pump.

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