Multi-channel aerosol sampling device

Abstract

The utility model discloses a multi-channel aerosol sampling device which mainly solves the technical problems that an existing sampling device is high in material cost, large in weight, inconvenient to carry and the like. The sampling device comprises a shell, and a sampling unit, a mounting plate and a damping unit which are arranged in the shell, the sampling unit comprises a plurality of total dust filters respectively mounted on the mounting plate, a valve body assembly and a sucking pump; an air inlet nozzle of each total dust filter is provided with an air inlet pipe, the shell is provided with an air inlet, and each air inlet pipe penetrates through the air inlet and extends into the sampling area; an air outlet nozzle of each total dust filter is connected with an air inlet end of the valve body assembly, and an air suction port of the air suction pump is connected with an air outlet end of the valve body assembly; the damping unit comprises a buffer pad and a plurality of damping seats, one end of each damping seat is fixed to the bottom of the mounting plate, and the other end of each damping seat penetrates through the buffer pad to be fixed to the bottom of the shell. The sampling device can effectively ensure the working stability of each component under the conditions of strong impact and strong vibration.

Description

Technical Field

[0001] The utility model relates to the aerosol sampling technology, in particular to a multi-channel aerosol sampling device. Background Art

[0002] Aerosol is an important content measured in the fields of industry, environment, etc. In order to facilitate the study of the specific components of aerosol, it is necessary to sample the aerosol, and then separate the solid particles or liquid particles in the aerosol from the gas, so as to further analyze the solid particles or liquid particles.

[0003] At present, for the collection of aerosol at high-strength impact sites, it is usually required that the sampling device has good seismic resistance. In order to improve the seismic resistance, the existing aerosol sampling is usually made of thickened steel plates, and the internal parts are modularly installed, so as to improve the strength of the overall structure of the sampling device. However, the method of improving the overall structural strength often leads to a higher material cost and a larger weight of the whole device, which is not convenient for handling. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a multi-channel aerosol sampling device, which is used to solve the technical problems of high material cost, large weight and inconvenient handling of the existing sampling device.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A multi-channel aerosol sampling device, which is characterized in that:

[0007] It includes a housing, a sampling unit, a mounting plate and a shock absorption unit arranged in the housing;

[0008] The sampling unit includes a plurality of total dust filters respectively installed on the mounting plate, a valve body assembly and an air extraction pump; an air inlet pipe is respectively arranged on the air inlet nozzle of each total dust filter, an air inlet is arranged on the housing, and each air inlet pipe respectively passes through the air inlet and extends into the sampling area; the air outlet nozzles of each total dust filter are respectively connected with the air inlet end of the valve body assembly, and the air extraction port of the air extraction pump is connected with the air outlet end of the valve body assembly;

[0009] The shock absorption unit includes a buffer pad and a plurality of shock absorption seats; the buffer pad is located between the mounting plate and the bottom of the housing and is used for buffering the external vibration energy; one end of each shock absorption seat is respectively fixed to the bottom of the mounting plate, and the other end passes through the buffer pad and is respectively fixed to the bottom of the housing.

[0010] Furthermore, the sampling unit further includes a gas flow controller installed on the mounting plate, and both ends of the gas flow controller are respectively connected with the air outlet end of the valve body assembly and the air extraction port of the air extraction pump through air pipes.

[0011] Further, the sampling unit further includes a main controller installed on the mounting plate. The main controller is respectively connected to the air extraction pump, the valve body assembly, and the gas flow controller, and is used to control the switches of the air extraction pump and the valve body assembly, and obtain the flow parameters of the gas flow controller.

[0012] Further, the valve body assembly includes a plurality of solenoid valves corresponding to the total dust filters one by one. The air outlet nozzles of each total dust filter are respectively connected to the intake ends of the corresponding solenoid valves; there are a plurality of gas flow controllers, and they correspond to each solenoid valve one by one; both ends of each gas flow controller are respectively connected to the outlet end of the corresponding solenoid valve and the air extraction port of the air extraction pump through air pipes.

[0013] Alternatively, the valve body assembly is a single solenoid valve. The air outlet nozzles of each total dust filter are respectively connected to the intake end of the solenoid valve; there is one gas flow controller, and both ends of it are respectively connected to the outlet end of the solenoid valve and the air extraction port of the air extraction pump through air pipes.

[0014] Further, the plurality of total dust filters are all installed on the mounting plate through fixing frames.

[0015] The fixing frame includes a bracket and a pressing plate arranged above the bracket and connected to the bracket; the bracket is vertically installed on the mounting plate. A plurality of first opening grooves are provided at the top of the bracket, and a plurality of second opening grooves corresponding to the first opening grooves are provided at the bottom of the pressing plate; after the bracket is connected to the pressing plate, an installation channel is formed between the first opening groove and the corresponding second opening groove, and each total dust filter is clamped in the corresponding installation channel.

[0016] Further, a rectangular hole is provided at the lower part of the bracket, and the air extraction pump is located in the rectangular hole and is installed on the mounting plate through the bracket.

[0017] Further, the outer shell includes a shell cover and a shell body connected to each other; the air inlet is arranged on the side wall of the shell cover; the mounting plate is installed on the bottom of the shell body through a plurality of shock-absorbing seats.

[0018] Further, a handle is provided on the outer side wall of the shell body.

[0019] Further, a plurality of avoidance holes corresponding to the plurality of shock-absorbing seats are provided on the buffer pad, and the other ends of the shock-absorbing seats respectively pass through the corresponding avoidance holes and are fixed to the bottom of the shell body.

[0020] Further, the buffer pad is made of sponge; the shock-absorbing seat is a cylindrical rubber seat.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0022] 1. In the utility model, multiple total dust filters, valve body assemblies and air extraction pumps are all installed on the same mounting plate inside the housing, thereby improving the integration degree of the overall structure and reducing the material cost. Then, the mounting plate is connected to the housing through a shock absorption unit composed of a buffer pad and multiple shock absorption seats, ensuring the stability of each component under strong impact and strong vibration conditions. Finally, due to this structural design, the overall weight of the sampling device is relatively light, making it easier to carry.

[0023] 2. In the utility model, the gas flow controller can be used to control the gas flow rate flowing through the total dust filter in real time, meeting the diverse requirements of sampling.

[0024] 3. The main controller of the utility model can control the switches of the air extraction pump and the valve body assembly one by one, and can timely obtain the flow rate parameters of the gas flow controller, thereby realizing the real-time monitoring of the sampling process.

[0025] 4. Multiple total dust filters and air extraction pumps in the utility model are installed on the same bracket, further improving the structural compactness and thus reducing the overall weight of the sampling device.

[0026] 5. The housing of the utility model is provided with a handle, making it convenient to carry and move the sampling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the external structural schematic diagram of the embodiment of the utility model;

[0028] Figure 2 is the internal structural schematic diagram of the embodiment of the utility model;

[0029] Figure 3 is the connection structural schematic diagram of the sampling unit and the shock absorption unit in the embodiment of the utility model;

[0030] Figure 4 is the connection structural schematic diagram of the mounting plate and the shock absorption seat in the embodiment of the utility model.

[0031] The reference numerals are as follows:

[0032] 1 - housing, 11 - housing cover, 111 - air inlet, 12 - housing body, 121 - handle, 2 - mounting plate, 21 - shock absorption seat, 3 - buffer pad, 31 - avoidance hole, 4 - total dust filter, 41 - air inlet nozzle, 42 - air outlet nozzle, 5 - valve body assembly, 51 - solenoid valve, 6 - air extraction pump, 61 - air extraction port, 7 - gas flow controller, 8 - main controller, 9 - fixing bracket, 91 - bracket, 911 - first opening groove, 912 - rectangular hole, 92 - pressing plate, 921 - second opening groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] To enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. In addition, terms such as "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0034] Referring to Figures 1 to 4 , this embodiment provides a multi-channel aerosol sampling device, including a housing 1, a sampling unit, a mounting plate 2 and a shock absorption unit disposed inside the housing.

[0035] The housing 1 includes a housing cover 11 and a housing body 12 connected to each other. The housing cover 11 and the housing body 12 enclose an internal space for installing the sampling unit, the mounting plate 2 and the shock absorption unit. In this embodiment, the housing cover 11 is detachably installed on the housing body 12, and three air inlets 111 are provided on the side wall of the housing cover 11. For the convenience of handling, two handles 121 are provided on the outer side wall of the housing body 12, and the two handles 121 are distributed on both sides of the housing body 12.

[0036] The sampling unit includes a plurality of total dust filters 4 respectively installed on the mounting plate 2, as well as a valve body assembly 5 and an air extraction pump 6. An air inlet pipe is provided on the air inlet nozzle 41 of each total dust filter 4, and each air inlet pipe extends into the sampling area through the air inlet 111 respectively. Generally, the diameter of the air inlet 111 is larger than the outer diameter of the air inlet pipe. One air inlet pipe can extend from one air inlet 111, or multiple air inlet pipes can extend from one air inlet 111.

[0037] The air outlet nozzle 42 of each total dust filter 4 is respectively connected to the air inlet end of the valve body assembly 5, and the air extraction port 61 of the air extraction pump 6 is connected to the air outlet end of the valve body assembly 5; the exhaust port 62 of the air extraction pump 6 is communicated with the internal space enclosed by the housing cover 11 and the housing body 12.

[0038] The shock absorption unit includes a buffer pad 3 and a plurality of shock absorption seats 21. The buffer pad 3 is located between the mounting plate 2 and the bottom of the housing 1 for buffering the external vibration energy. A plurality of avoidance holes 31 are provided on the buffer pad 3. One end of each shock absorption seat 21 is respectively fixed to the bottom of the mounting plate 2, and the other end of the shock absorption seat 21 respectively passes through the corresponding avoidance hole 31 and is fixed to the bottom of the housing body 12. The arrangement of the buffer pad 3 and the shock absorption seats 21 makes the mounting plate 2 and the bottom of the housing body 12 spaced apart from each other, thereby buffering the external vibration energy and effectively preventing the internal components of the sampling device from being damaged under strong impact and strong vibration conditions. Compared with the traditional method of strengthening the overall structural strength, the whole machine of this embodiment is lighter in mass, more convenient to handle, and lower in manufacturing cost.

[0039] In this embodiment, the shock-absorbing seat 21 is a cylindrical rubber seat, and there are four shock-absorbing seats 21. The four shock-absorbing seats 21 are respectively fixed vertically at the four corners of the bottom of the mounting plate 2, and the heights of the four shock-absorbing seats 21 are the same. The lower ends of the four shock-absorbing seats 21 are fixed at the four corners of the bottom plate of the shell 1. The entire mounting plate 2 is supported to a certain height by the four shock-absorbing seats 21. The buffer pad 3 is filled between the mounting plate 2 and the bottom plate of the shell 12. The four corners of the buffer pad 3 are provided with cylindrical avoidance holes 31, and the shock-absorbing seats 21 are penetrated in the avoidance holes 31. The buffer pad 3 is selected from sponge, and its buffering effect is better.

[0040] A corresponding number of shock-absorbing seats 21 may also be arranged at appropriate positions along the length direction of the bottom of the shell 12 as required to further improve the shock-absorbing effect.

[0041] During operation, the air is extracted by the air pump 6, and the aerosol particles in the external environment enter the total dust filter 4 from the air inlet pipe through the air inlet nozzle 41, and the aerosol particles are intercepted by the total dust filter 4, thereby achieving sampling. In this embodiment, multiple total dust filters 4 achieve multi-channel sampling, and the sampling efficiency is higher. Afterwards, the gas passing through the total dust filter 4 enters the air pump 6 through the valve body assembly 5, and then is discharged into the housing 1 from the exhaust port 62 of the air pump 6.

[0042] In some embodiments, in order to facilitate the exhaust of gas in the housing 1 , a hose is installed at the exhaust port 62 of the vacuum pump 6 , and the hose extends from any air inlet 111 of the housing 1 , thereby exhausting the gas to the outside of the housing 1 .

[0043] In order to conveniently control the gas flow rate flowing through the total dust filter 4, the sampling unit of this embodiment further includes a gas flow controller 7 and a main controller 8 mounted on the mounting plate 2. The two ends of the gas flow controller 7 are respectively connected to the gas outlet end of the valve body assembly 5 and the gas extraction port 61 of the air extraction pump 6 through an air pipe. The main controller 8 is respectively connected to the air extraction pump 6, the valve body assembly 5 and the gas flow controller 7, and is used to control the switch of the air extraction pump 6 and the valve body assembly 5, and to obtain the flow parameters of the gas flow controller 7 and transmit them to the external display for real-time display.

[0044] In this embodiment, the valve body assembly 5 includes a plurality of solenoid valves 51 corresponding to the total dust filter 4, and the air outlet nozzle 42 of each total dust filter 4 is respectively connected to the air inlet end of the corresponding solenoid valve 51, so that each solenoid valve 51 controls one total dust filter 4. At the same time, there are multiple gas flow controllers 7, which correspond to each solenoid valve 51 one by one; the two ends of each gas flow controller 7 are respectively connected to the air inlet end of the corresponding solenoid valve 51 and the air extraction port 61 of the air extraction pump 6 through an air pipe, so that each total dust filter 4 can be individually exhausted and filtered.

[0045] Of course, the valve body assembly 5 can also be set as a solenoid valve 51. The air outlet nozzles 41 of each main dust filter 4 are respectively connected to the intake end of the solenoid valve 51, and each main dust filter 4 is centrally controlled through the same solenoid valve 51. There can also be only one gas flow controller 7. The outlet end of the solenoid valve 51 is communicated with the intake end of the gas flow controller 7 through a gas collecting device, and the outlet end of the gas flow controller 7 is communicated with the air extraction port 61 of the air extraction pump 6 through a trachea, thus simplifying the connecting pipeline.

[0046] In this embodiment, multiple main dust filters 4 are all installed on the mounting plate 2 through a fixing frame 9. The fixing frame 9 includes a bracket 91 and a pressing plate 92 arranged above the bracket 91 and connected to the bracket 91. The bottom of the bracket 91 is vertically fixed on the mounting plate 2 through fastening bolts. Multiple semi-circular first opening grooves 911 are provided at the top of the bracket 91, and the openings of the first opening grooves 911 face upward. Each main dust filter 4 is installed in each first opening groove 911. The bottom of the pressing plate 92 is provided with multiple semi-circular second opening grooves 921 corresponding to the first opening grooves 911.

[0047] The bracket 91 and the pressing plate 92 are detachably connected. In this embodiment, both ends of the pressing plate 92 are connected to the bracket 91 through bolts. After they are connected, an installation channel is formed between the first opening groove 911 and the corresponding second opening groove 921, and each main dust filter 4 is clamped in the corresponding installation channel.

[0048] A rectangular hole 912 is provided at the lower part of the bracket 91. The air extraction pump 6 is located in the rectangular hole 912 and is installed on the mounting plate 2 through the bracket 91. In this way, the main dust filter 4 and the air extraction pump 6 are fixed on the mounting plate 2 through the same bracket 91, the integration degree of the whole device is higher, the seismic performance is better, and the overall structure is more compact.

[0049] In this embodiment, the valve body assembly 5, the air extraction pump 6 and multiple main dust filters 4 inside the whole sampling device are all integrated and fixed on the same mounting plate 2. Then, the mounting plate 2 is connected to the outer shell 1 through a shock absorber 21. The shock absorber 21 can buffer the external vibration energy. At the same time, the buffer pad 3 filled between the mounting plate 2 and the bottom plate of the outer shell 1 can also buffer the external vibration energy.

[0050] Compared with the traditional method of strengthening the overall structural strength, the whole machine of this embodiment is lighter in mass, more convenient to carry, and lower in manufacturing cost.

[0051] Based on the above embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

Claims

1. A multi-channel aerosol sampling device, characterized in that: It comprises a housing (1), a sampling unit, a mounting plate (2) and a shock absorbing unit arranged in the housing; The sampling unit comprises a plurality of total dust filters (4) respectively mounted on a mounting plate (2), a valve body assembly (5) and an air pump (6); an air inlet pipe is respectively arranged on the air inlet nozzle (41) of each total dust filter (4), an air inlet port (111) is arranged on the housing (1), and each air inlet pipe respectively passes through the air inlet port (111) and extends into the sampling area; an air outlet nozzle (42) of each total dust filter (4) is respectively connected to the air inlet end of the valve body assembly (5), and an air extraction port (61) of the air extraction pump (6) is connected to the air outlet end of the valve body assembly (5); The shock absorbing unit comprises a buffer pad (3) and a plurality of shock absorbing seats (21); the buffer pad (3) is located between the mounting plate (2) and the bottom of the housing (1) and is used to buffer external vibration energy; one end of each shock absorbing seat (21) is respectively fixed to the bottom of the mounting plate (2), and the other end passes through the buffer pad (3) and is respectively fixed to the bottom of the housing (1).

2. A multi-channel aerosol sampling device according to claim 1, characterized in that: The sampling unit also includes a gas flow controller (7) mounted on the mounting plate (2), the two ends of which are respectively connected to the gas outlet end of the valve body assembly (5) and the gas extraction port (61) of the gas extraction pump (6) through gas pipes.

3. A multi-channel aerosol sampling device according to claim 2, characterized in that: The sampling unit further comprises a main controller (8) mounted on the mounting plate, the main controller (8) being respectively connected to the air pump (6), the valve body assembly (5) and the gas flow controller (7), and being used for controlling the switching of the air pump (6) and the valve body assembly (5), and obtaining the flow parameters of the gas flow controller (7).

4. A multi-channel aerosol sampling device according to claim 3, characterized in that: The valve body assembly (5) comprises a plurality of solenoid valves (51) corresponding one to one with the total dust filters (4), and the air outlet nozzle (42) of each total dust filter (4) is respectively connected to the air inlet end of the corresponding solenoid valve (51); there are a plurality of gas flow controllers (7), which correspond one to one with each solenoid valve (51); the two ends of each gas flow controller (7) are respectively connected to the air outlet end of the corresponding solenoid valve (51) and the air extraction port (61) of the air extraction pump (6) through an air pipe; Alternatively, the valve body assembly (5) is a solenoid valve (51), and the air outlet nozzle of each total dust filter (4) is respectively connected to the air inlet end of the solenoid valve (51); the gas flow controller (7) has one, and its two ends are respectively connected to the air outlet end of the solenoid valve (51) and the air extraction port (61) of the air extraction pump (6) through an air pipe.

5. A multi-channel aerosol sampling device according to any one of claims 1 to 4, characterized in that: The plurality of total dust filters (4) are all mounted on the mounting plate (2) via a fixing frame (9); The fixing frame (9) comprises a bracket (91) and a pressing plate (92) arranged above the bracket (91) and connected to the bracket (91); the bracket (91) is vertically mounted on the mounting plate (2); a plurality of first opening grooves (911) are arranged on the top of the bracket (91); a plurality of second opening grooves (921) corresponding to the first opening grooves (911) are arranged on the bottom of the pressing plate (92); after the bracket (91) is connected to the pressing plate (92), a mounting channel is formed between the first opening grooves (911) and the corresponding second opening grooves (921), and each total dust filter (4) is snap-fitted into the corresponding mounting channel.

6. A multi-channel aerosol sampling device according to claim 5, characterized in that: A rectangular hole (912) is provided at the bottom of the bracket (91), and the air pump (6) is located in the rectangular hole (912) and is mounted on the mounting plate (2) through the bracket (91).

7. A multi-channel aerosol sampling device according to claim 6, characterized in that: The outer shell (1) comprises a shell cover (11) and a shell body (12) which are connected to each other; the air inlet (111) is arranged on a side wall of the shell cover (11); and the mounting plate (2) is mounted on the bottom of the shell body (12) via a plurality of shock-absorbing seats (21).

8. A multi-channel aerosol sampling device according to claim 7, characterized in that: A handle (121) is provided on the outer side wall of the shell (12).

9. A multi-channel aerosol sampling device according to claim 8, characterized in that: The buffer pad (3) is provided with a plurality of avoidance holes (31) corresponding to the plurality of shock absorbing seats (21); the other ends of the shock absorbing seats (21) respectively pass through the corresponding avoidance holes (31) and are fixed to the bottom of the shell (12).

10. A multi-channel aerosol sampling device according to claim 9, characterized in that: The buffer pad (3) is a sponge; The shock-absorbing seat (21) is a cylindrical rubber seat.

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