Aerosol graded sampling device

Abstract

The utility model discloses a grading sampling device for aerosol, which mainly solves the technical problems that the anti-seismic property of the existing sampling equipment is poorer in an impact high-temperature and high-pressure field, and parts in the equipment are extremely easy to be damaged by shock. The sampling device comprises a box body, and a sampling unit, a fixing plate and a damping unit which are arranged in the box body, the sampling unit comprises a grading filter and an air extractor which are respectively arranged on the fixed plate; an air inlet nozzle is arranged at the top of the grading filter, a through hole is formed in a box cover of the box body, and the air inlet nozzle extends out of the through hole from inside to outside and is used for collecting an aerosol sample; an air outlet nozzle is arranged at the bottom of the grading filter and is connected with an air extractor; the fixed plate is mounted on the bottom plate of the box body through a plurality of connecting columns and fasteners; the damping unit comprises a buffer pad and a plurality of damping pads; and the shock pad and the buffer pad can achieve buffering between the connecting column and the fixing plate, and parts in the device are effectively prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to aerosol sampling technology, in particular to an aerosol classification sampling device. Background Art

[0002] An aerosol refers to a gaseous dispersion system composed of solid or liquid particles suspended in a gas medium. The densities of these solid or liquid particles are slightly different or quite different from that of the gas medium. When it is necessary to sample an aerosol, a classification sampler is generally used for collection.

[0003] For the classification collection of aerosols at high-temperature and high-pressure sites during impact, sampling equipment with better seismic resistance is usually required. Existing classification sampling equipment usually installs seismic isolation supports and other structures at the four corners of the bottom of the entire equipment to improve the seismic resistance of the sampling equipment. However, through actual verification, the seismic resistance of such structures is poor, and the components inside the equipment are extremely easy to be damaged by vibration, thus affecting the smooth progress of the collection work. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an aerosol classification sampling device, which mainly solves the technical problems that the existing sampling equipment has poor seismic resistance at high-temperature and high-pressure impact sites, and the components inside the equipment are extremely easy to be damaged by vibration. The utility model can reduce the vibration transmitted to the inside of the sampling device and effectively prevent the components inside the sampling device from being damaged.

[0005] An aerosol classification sampling device is characterized in that it includes a box body, a sampling unit, a fixing plate and a shock absorption unit arranged inside the box body;

[0006] The sampling unit includes a classification filter and an air extraction device respectively installed on the fixing plate; an air inlet nozzle is arranged at the top of the classification filter, a through hole is opened on the box cover of the box body, and the air inlet nozzle extends outwards from the through hole for collecting aerosol samples; an air outlet nozzle is arranged at the bottom of the classification filter and is connected to the air extraction device;

[0007] The fixing plate is installed on the bottom plate of the box body through a plurality of connecting columns and fasteners;

[0008] The shock absorption unit includes a buffer pad and a plurality of shock pads; the buffer pad is located between the lower side of the fixing plate and the bottom plate of the box body, and its upper and lower end faces are respectively in contact with the fixing plate and the bottom plate of the box body; each connecting column is located inside the buffer pad, with one end fixed on the bottom plate of the box body and the other end in contact with the lower side of the fixing plate;

[0009] The plurality of shock pads are respectively located above the fixing plate and correspond to the plurality of connecting columns one by one. Fasteners are sequentially passed through the shock pads, the fixing plate and extend into the other end of the corresponding connecting column to realize the fastening of the fixing plate and the connecting column.

[0010] Further, the grading filter is mounted on the fixed plate by a pressing device;

[0011] The pressing device includes a base and a pressing plate respectively located at both ends of the grading filter, and a plurality of connecting rods evenly distributed in the circumferential direction of the grading filter; wherein, the base is mounted on the fixed plate, and the base and the pressing plate are connected by a plurality of connecting rods, so as to press the grading filter between the base and the pressing plate.

[0012] Further, an air inlet pipe and a fixing sleeve are further included; the air inlet of the air inlet pipe extends into the sampling area, and the end far from the air inlet is connected to an air inlet nozzle; the outer diameter of the fixing sleeve is adapted to the aperture of the through hole on the box cover, and the fixing sleeve is fixed in the through hole and sleeved on the connection part of the air inlet nozzle and the air inlet pipe.

[0013] Further, the air inlet pipe is connected to the box cover of the box body through a supporting device; the supporting device includes a connecting seat and at least one inclined strut; the connecting seat is mounted on the air inlet pipe, one end of the inclined strut is hinged to the top of the box cover, and the other end is hinged to the connecting seat.

[0014] Further, a dust-proof cap is mounted at the air inlet of the air inlet pipe, and the dust-proof cap includes a shielding plate and a connecting cylinder;

[0015] The shielding plate is located above the air inlet pipe and has a distance from the air inlet of the air inlet pipe; the connecting cylinder is coaxially sleeved on the air inlet pipe, and the upper end surface is flush with the upper end surface of the air inlet; the shielding plate and the connecting cylinder are connected by a plurality of support columns.

[0016] Further, the shielding plate is in an umbrella-shaped structure.

[0017] Further, a lateral air outlet nozzle is mounted on the side of the air inlet nozzle, an aerosol sensor is mounted on the inner wall of the box body, and the lateral air outlet nozzle is communicated with the aerosol sensor.

[0018] Further, a main controller is further included, and the main controller is respectively connected to the air extraction device and the aerosol sensor, and is used for controlling the switch of the air extraction device and obtaining the information collected by the aerosol sensor.

[0019] Further, air outlet holes and handles are respectively provided on the side walls of the box body.

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

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] 1. The utility model includes a box body, a sampling unit, a fixing plate and a shock absorption unit arranged in the box body. During use, the sampling device is placed at the impact high-temperature and high-pressure site, and the air extraction device extracts air, so that the aerosol at the impact high-temperature and high-pressure site enters the grading filter from the air inlet nozzle. Different particle size aerosols are intercepted through the grading filter, thereby realizing sampling. Since the grading filter and the air extraction device in the box body are both installed on the fixing plate, and the fixing plate is connected to the bottom plate of the box body through a plurality of connecting columns, and a shock pad is arranged between the connecting column and the fixing plate, the shock pad can achieve buffering between the connecting column and the fixing plate; at the same time, the buffer pad can form a buffer between the fixing plate and the bottom plate of the box body. When the vibration is transmitted to the connecting column through the box body, the shock pad and the buffer pad will buffer the energy, thereby reducing the vibration received by each device installed on the fixing plate and effectively preventing the components inside the sampling device from being damaged.

[0023] 2. The grading filter of the utility model is installed on the fixing plate through a pressing device, making the installation of the grading filter more stable, thereby ensuring the stability of its sampling process.

[0024] 3. The design of the air inlet pipe, the fixed sleeve and the support device of the utility model enables the sampling device to stably collect aerosol particles at a higher position when at the impact high-temperature and high-pressure site, thereby increasing the sampling range.

[0025] 4. The design of the dust-proof cap in the utility model can effectively reduce the impact high-temperature and high-pressure debris from entering the grading filter through the air inlet pipe, thereby improving the sampling quality.

[0026] 5. The design of the aerosol sensor in the utility model can detect the effective gas entering the grading filter in real time to ensure the effectiveness of the collected samples.

[0027] 6. The design of the main controller of the utility model improves the intelligence of the sampling device, thereby improving the sampling efficiency.

[0028] 7. The design of the air outlet hole of the utility model ensures that the gas in the box body can be discharged in time, thereby improving the safety of the sampling device. Brief Description of the Drawings

[0029] Figure 1 is the structural schematic diagram of an embodiment of the utility model;

[0030] Figure 2 is Figure 1 the partial enlarged view of A in

[0031] Figure 3 is the internal structural schematic diagram of an embodiment of the utility model;

[0032] Figure 4It is a schematic diagram of the connection structure between the sampling unit and the fixing plate in the embodiment of the present utility model.

[0033] The reference signs are as follows:

[0034] 1 - Box body, 11 - Box cover, 111 - Fixed sleeve, 112 - Air outlet hole, 113 - Handle, 2 - Fixing plate, 21 - Connecting column, 22 - Shock pad, 3 - Graded filter, 31 - Air inlet nozzle, 311 - Lateral air outlet nozzle, 32 - Air outlet nozzle, 4 - Air extraction device, 5 - Pressing device, 51 - Base, 52 - Pressing plate, 53 - Connecting rod, 6 - Air inlet pipe, 7 - Support device, 71 - Diagonal strut, 72 - Connecting seat, 8 - Dust cap, 81 - Baffle plate, 82 - Support column, 83 - Connecting cylinder, 9 - Main controller. Detailed implementation manners

[0035] In order 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 and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0036] Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 , this embodiment provides an aerosol grading sampling device, including a box body 1, a sampling unit, a fixing plate 2 and a shock absorption unit arranged in the box body.

[0037] The sampling unit includes a graded filter 3 and an air extraction device 4 respectively installed on the fixing plate 2. An air inlet nozzle 31 is provided at the top of the graded filter 3. A box cover 11 is provided on the box body 1, and a through hole is opened on the box cover 11. The air inlet nozzle 31 extends from the through hole from the inside to the outside for collecting aerosol samples. An air outlet nozzle 32 is provided at the bottom of the graded filter 3, and the air outlet nozzle 32 is communicated with the air extraction device 4.

[0038] The fixing plate 2 is installed on the bottom plate of the box body 1 through a plurality of connecting columns 21 and fasteners. The lower end of the connecting column 21 is fixedly connected to the bottom plate of the box body 1, and the upper end of the connecting column 21 abuts against the lower side surface of the fixing plate 2, thereby separating the fixing plate 2 from the bottom plate of the box body 1. Generally, the fixing plate 2 is arranged parallel to the bottom plate of the box body 1. The fixing plate 2 is a rectangular plate, and the area of the fixing plate 2 is smaller than the area of the bottom plate of the box body 1. There are four connecting columns 21, and the four connecting columns 21 are respectively located at the four corners of the fixing plate 2.

[0039] The shock absorption unit includes a buffer pad and a plurality of shock pads 22; the buffer pad is located between the lower side of the fixed plate 2 and the bottom plate of the box body 1, and its upper end face abuts against the lower side face of the fixed plate 2, and the lower end face abuts against the bottom plate of the box body 1. Each connecting column 21 is located within the buffer pad. The plurality of shock pads 22 are respectively located above the fixed plate 2 and correspond one-to-one with the plurality of connecting columns 21. Fasteners are sequentially passed through the shock pads 22, the fixed plate 2 and extend into the other end of the corresponding connecting column 21 to realize the fastening of the fixed plate 2 and the connecting column 21.

[0040] Specifically, threaded holes are provided at both ends of the connecting column 21. One end of the connecting column 21 is fixed to the bottom plate of the box body 1 by a screw, and a gasket is provided between the screw and the bottom plate of the box body 1. Connecting holes are provided at the four corners of the fixed plate 2. The other end of the connecting column 21 is aligned with the connecting hole. The shock pad 22 has a disc-shaped structure, and a circular hole is provided in the middle of the shock pad 22. The circular hole on the shock pad 22 is aligned with the connecting hole on the fixed plate 2. The fasteners are screws and gaskets. The screw passes through the circular hole of the shock pad 22 and the connecting hole on the fixed plate 2 and enters the threaded hole of the connecting column 21, and a gasket is provided between the nut of the screw and the shock pad 22. The shock pad 22 is pressed between the gasket and the fixed plate 2, and the fixed plate 2 is clamped and fixed between the upper end face of the connecting column 21 and the shock pad 22. The buffer effect on the fixed plate 2 is realized through the shock pad 22.

[0041] In this embodiment, the shock pad 22 is a rubber pad, and the buffer pad is a sponge. The buffer pad is filled in the gap between the fixed plate 2 and the bottom plate of the box body 1 to play a role in shock absorption.

[0042] During use, the sampling device is placed at the impact high-temperature and high-pressure site, and the air extraction device 4 extracts air, so that the aerosol at the impact high-temperature and high-pressure site enters the classification filter 3 from the air inlet nozzle 31. Different particle-size aerosols are intercepted by the classification filter 3, thereby realizing sampling. Since the classification filter 3 and the air extraction device 4 inside the box body 1 are both installed on the fixed plate 2, and the fixed plate 2 is connected to the bottom plate of the box body 1 through the connecting column 21, and a shock pad 22 is provided between the connecting column 21 and the fixed plate 2, the shock pad 22 can achieve buffering between the connecting column 21 and the fixed plate 2. At the same time, the buffer pad can form a buffer between the fixed plate 2 and the bottom plate of the box body 1. After the vibration is transmitted to the connecting column 21 through the box body 1, the shock pad 22 and the buffer pad will buffer the energy, thereby reducing the vibration received by each device installed on the fixed plate 2 and effectively preventing the components inside the sampling device from being damaged.

[0043] Refer to Figure 4, in order to ensure the stability of the grading filter 3 mounted on the fixing plate 2, in this embodiment, the grading filter 3 is mounted on the fixing plate 2 through a pressing device 5. The pressing device 5 includes a base 51 and a pressing plate 52 respectively located at both ends of the grading filter 3, and a plurality of connecting rods 53 evenly distributed in the circumferential direction of the grading filter 3. The base 51 is mounted on the fixing plate 2, the pressing plate 52 is arranged at an interval with the base 51, and the base 51 and the pressing plate 52 are connected by a plurality of connecting rods 53, so as to press the grading filter 3 between the base 51 and the pressing plate 52.

[0044] In some embodiments, an intake pipe 6 communicating with the intake nozzle 31 is mounted on the box cover 11.

[0045] Specifically, a fixed sleeve 111 is mounted at the position of the box cover 11 corresponding to the through hole. The outer diameter of the fixed sleeve 111 is adapted to the aperture of the through hole on the box cover 11. The fixed sleeve 111 has a certain length, one end of which is fixed in the through hole, and the other end extends out of the box body 1, so as to be sleeved on the connection part of the intake nozzle 31 and the intake pipe 6, thereby improving the connection stability of the intake nozzle 31 and the intake pipe 6. The intake port of the intake pipe 6 (i.e., the end far from the intake nozzle 31) extends into the sampling area, so as to ensure that when the sampling device is placed at the impact high-temperature and high-pressure site, aerosol particles at a higher position can be stably sampled.

[0046] In order to ensure the firm installation of the intake pipe 6, a support device 7 is provided between the intake pipe 6 and the box cover 11. The support device 7 includes three inclined struts 71 and a connecting seat 72. The connecting seat 72 is sleeved on the intake pipe 6, and a fastening screw is provided on the connecting seat 72. The connecting seat 72 is fixed on the intake pipe 6 through the fastening screw. One end of each inclined strut 71 is respectively rotatably connected to the connecting seat 72 through a rotating shaft, and a support is fixed on the box cover 11. The other end of the inclined strut 71 is rotatably connected to the support through a rotating shaft.

[0047] In order to reduce the entry of impact high-temperature and high-pressure debris into the intake pipe 6, in some embodiments, a dust-proof cap 8 is further mounted at the intake port of the intake pipe 6.

[0048] Refer to Figure 2 , the dust-proof cap 8 includes a shielding plate 81 and a connecting cylinder 83; the shielding plate 81 is located above the intake pipe 6 and there is a distance between the shielding plate 81 and the intake port of the intake pipe 6; the connecting cylinder 83 is coaxially sleeved on the intake pipe 6 and the upper end surface is flush with the upper end surface of the intake port; the shielding plate 81 and the connecting cylinder 83 are connected by three support columns 82. After the dust-proof cap 8 is mounted on the intake pipe 6, the shielding plate 81 and the connecting cylinder 83 are distributed in the up and down direction, and the aerosol generated by the impact high-temperature and high-pressure enters laterally between the shielding plate 81 and the connecting cylinder 83.

[0049] In some embodiments, the shielding plate 81 is in an umbrella shape.

[0050] In order to facilitate the removal of the dust cap 8, in some embodiments, the connecting cylinder 83 is detachably connected to the intake pipe 6. Specifically, an external thread is provided at the air inlet of the intake pipe 6, and an internal thread is provided on the inner wall of the connecting cylinder 83. The connecting cylinder 83 is threadedly connected to the intake pipe 6.

[0051] In order to detect the effective gas entering the classification filter 3, in some embodiments, an aerosol sensor is installed inside the box body 1. Specifically, a lateral air outlet 311 communicating with the air inlet nozzle 31 is installed on the side of the air inlet nozzle 31, and an aerosol sensor is installed on the inner wall of the box body 1. The lateral air outlet 311 is communicated with the aerosol sensor. Therefore, the aerosol sensor can be used to detect in real time whether the gas entering the classification filter 3 is an aerosol with particulate matter.

[0052] In some embodiments, a main controller 9 is further included. The main controller 9 is respectively connected to the air extraction device 4 and the aerosol sensor, and is used to control the switch of the air extraction device 4 and obtain the information collected by the aerosol sensor, so as to realize the intelligentization of the sampling device.

[0053] In order to facilitate handling, handles 113 are respectively provided on the side walls of the box body 1, and are generally symmetrically arranged on both sides. In order to ensure the rapid discharge of the gas in the box body 1, a plurality of air outlet holes 112 are generally provided in the box body 1. The gas discharged from the air extraction device 4 is discharged into the box body 1, and then discharged out of the box body 1 through the air outlet holes 112.

[0054] 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. An aerosol classification sampling device, characterized in that: It includes a box body (1), a sampling unit, a fixing plate (2) and a shock absorption unit arranged in the box body; The sampling unit includes a classification filter (3) and an air extraction device (4) respectively installed on the fixing plate (2); an air inlet nozzle (31) is provided at the top of the classification filter (3), a through hole is opened on the box cover (11) of the box body (1), and the air inlet nozzle extends outwards from the through hole for collecting aerosol samples; an air outlet nozzle (32) is provided at the bottom of the classification filter (3) and is connected to the air extraction device (4); The fixing plate (2) is installed on the bottom plate of the box body (1) through a plurality of connecting columns (21) and fasteners; The shock absorption unit includes a buffer pad and a plurality of shock pads (22); the buffer pad is located between the lower side of the fixing plate (2) and the bottom plate of the box body (1), and its upper end face and lower end face are respectively in contact with the fixing plate (2) and the bottom plate of the box body (1); each connecting column (21) is located within the buffer pad, with one end fixed to the bottom plate of the box body (1) and the other end in contact with the lower side surface of the fixing plate (2); the plurality of shock pads (22) are respectively located above the fixing plate (2) and correspond to the plurality of connecting columns (21) one by one. Fasteners are sequentially passed through the shock pads (22), the fixing plate (2) and extend into the other end of the corresponding connecting column (21) to realize the fastening of the fixing plate (2) and the connecting column (21).

2. The aerosol classification sampling device according to claim 1, characterized in that: The classification filter (3) is installed on the fixing plate (2) through a pressing device (5); The pressing device (5) includes a base (51) and a pressing plate (52) respectively located at both ends of the classification filter (3), and a plurality of connecting rods (53) evenly distributed in the circumferential direction of the classification filter (3); wherein, the base (51) is installed on the fixing plate (2), and the base (51) and the pressing plate (52) are connected by a plurality of connecting rods (53), so as to press the classification filter (3) between the base (51) and the pressing plate (52).

3. The aerosol classification sampling device according to claim 1 or 2, characterized in that: It further includes an air inlet pipe (6) and a fixing sleeve (111); the air inlet of the air inlet pipe (6) extends into the sampling area, and the end far from the air inlet is connected to the air inlet nozzle (31); the outer diameter of the fixing sleeve (111) is adapted to the aperture of the through hole on the box cover (11), and the fixing sleeve (111) is fixed in the through hole and sleeved on the connection part of the air inlet nozzle (31) and the air inlet pipe (6).

4. The aerosol classification sampling device according to claim 3, characterized in that: The air inlet pipe (6) is connected to the box cover (11) of the box body (1) through a support device (7); the support device (7) includes a connection seat (72) and at least one inclined strut (71); the connection seat (72) is installed on the air inlet pipe (6), one end of the inclined strut (71) is hinged to the top of the box cover (11), and the other end is hinged to the connection seat (72).

5. The aerosol classification sampling device according to claim 4, characterized in that: A dust cap (8) is installed at the air inlet of the air inlet pipe (6), and the dust cap (8) includes a shielding plate (81) and a connecting tube (83); The shielding plate (81) is located above the air intake pipe (6) and is spaced apart from the air inlet of the air intake pipe (6); the connecting tube (83) is coaxially sleeved on the air intake pipe (6), and its upper end surface is flush with the upper end surface of the air inlet; the shielding plate (81) and the connecting tube (83) are connected via a plurality of pillars (82).

6. The aerosol classification sampling device according to claim 5, characterized in that: The shielding plate (81) is an umbrella-shaped structure.

7. The aerosol classification sampling device according to claim 1, characterized in that: A lateral air outlet nozzle (311) is installed on the side of the air inlet nozzle (31), an aerosol sensor is installed on the inner wall of the box body (1), and the lateral air outlet nozzle (311) is connected to the aerosol sensor.

8. The aerosol classification sampling device according to claim 7, characterized in that: It also includes a main controller (9), which is connected to the air extraction device (4) and the aerosol sensor respectively, and is used to control the switch of the air extraction device (4) and obtain information collected by the aerosol sensor.

9. The aerosol classification sampling device according to claim 8, characterized in that: An air outlet (112) and a handle (113) are respectively provided on the side walls of the box body (1).

10. The aerosol classification sampling device according to claim 9, characterized in that: The buffer pad is a sponge; and the shock-absorbing pad (22) is a rubber pad.

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