CN217542551U

CN217542551U - High-precision comprehensive sampler for atmospheric particulates

Info

Publication number: CN217542551U
Application number: CN202220616433.XU
Authority: CN
Inventors: 田益华; 陈发洋
Original assignee: Wuhan Huanjing Testing Service Co ltd
Current assignee: Wuhan Huanjing Testing Service Co ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-10-04
Anticipated expiration: 2032-03-21

Abstract

The utility model discloses a high accuracy atmospheric particulates synthesizes sample thief, including the sampling box, the inside intercommunication of upside of sampling box has the inlet end, the sampling end is installed to the upper end screw thread of inlet end, the sampling end includes the sampling head, the peripheral lower extreme of sampling head encircles and has seted up the air inlet, install the impact head in the inner of sampling head between the air inlet, multiunit filter ring is installed to the lower extreme screw thread of sampling head, detecting element is including detecting the chamber, install beta radiation source in detecting the intracavity under the inlet end, beta radiation source's upper end is provided with first water conservancy diversion platform, be equipped with beta source under the beta radiation source, this device is after using, can conveniently dismantle and clear up the filter screen, has guaranteed the precision of later stage detection, and this device detects the concentration of particulate matter through beta radiation source and beta source simultaneously, has improved detection effect greatly.

Description

High-precision comprehensive sampler for atmospheric particulates

Technical Field

The utility model belongs to the technical field of the atmosphere detects, specifically be a high accuracy atmospheric particulates synthesizes sample thief.

Background

Along with the deepening of industrialization process, the atmospheric pollution problem also becomes more and more serious, in order to ensure people's health, need carry out sampling analysis to the atmosphere, carry out real-time supervision to atmospheric environment's pollution degree, at present when detecting the atmosphere, need gather earlier through the sample thief and detect through the particulate matter of determine module in to the atmosphere.

Present sampler is synthesized to atmospheric particulates is at the in-process that detects, when the concentration to specific particulate matter detects, need change different TSP cutterbars, and is very loaded down with trivial details, at the in-process of collecting gas, the filter membrane in the sampling head is after using for a long time, can block up easily, influence the detection precision of back stage, and at the in-process that detects, it is low to lead to the detection accuracy degree very easily through traditional detection mode, in order to solve above problem, a high accuracy sampler is synthesized to atmospheric particulates is proposed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems, a high-precision comprehensive sampler for atmospheric particulates is provided.

The utility model adopts the technical scheme as follows: the utility model provides a high accuracy atmospheric particulates synthesizes sample thief, includes the sampling box, the inside intercommunication of upside of sampling box has the inlet end, the sampling end is installed to the upper end screw thread of inlet end, the sampling end includes the sampling head, the peripheral lower extreme of sampling head encircles and has seted up the air inlet, install the impact head in the inner of sampling head between the air inlet, multiunit filter ring is installed to the lower extreme screw thread of sampling head, impact plate and filter screen have been placed from the top down to the inside of filter ring, the lower extreme of inlet end is equipped with detection module in the inside of sampling box, detection module is including detecting the chamber, install the beta radiation source in detecting the intracavity under the inlet end, the upper end of beta radiation source is provided with first water conservancy diversion platform, be equipped with the beta testing source under the beta radiation source.

In a preferred embodiment, the rotating seat is installed at the bottom end of the sampling box, the lower end of the rotating seat is connected with a triangular support, and a sealing ring is installed at the connecting part between every two filtering rings in a matching mode.

In a preferred embodiment, a filter screen is installed on the air inlet, the cross sections of the impact plate and the filter screen are concave with radians, a plurality of through holes are uniformly distributed on the impact plate, and a limiting plate is installed inside the filter ring below the filter screen.

In a preferred embodiment, a conical pipe is installed at the bottom of the filtering ring at the lowest end of the sampling head in a threaded mode, the lower end of the conical pipe is installed with an air inlet end in a threaded mode, the lower right end of the detection cavity penetrates through the outer wall of the right side of the sampling box to be connected with an exhaust pipe, and an air suction pump is installed at the connecting portion of the exhaust pipe and the detection cavity.

In a preferred embodiment, an unwinding roller and a winding roller are arranged in the sampling box on two sides between the beta radiation source and the beta detection source, a filter membrane is connected between the unwinding roller and the winding roller, and the power source from the unwinding roller and the winding roller is from a driving motor.

In a preferred embodiment, the outside of sampling box has the repair lid through hinge movable mounting, the internally mounted of sampling box has the battery, the guide plate is installed on detecting intracavity wall in the lower extreme both sides of beta radiation source, the bottom of guide plate is aimed at beta and is detected directly over the source, first water conservancy diversion platform is whole for the toper, first water conservancy diversion platform is whole for under the narrow width.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, at the in-process of suction air, carry out filtration treatment to the air through the filter screen, then the particulate matter of needs is discharged and is detected the intracavity, after discharging, flow into the positive center of filter membrane along first water conservancy diversion platform and guide plate, then on adhering to the filter membrane, then the beta radiation source begins to work, on high energy electron passed filter membrane arrival beta detection source, the concentration of particulate matter is calculated according to the decay and the decrement of remaining high energy electron, alright completion is to the detection of particulate matter, the precision that detects can be guaranteed simultaneously.

2. The utility model discloses in, after detecting, wind-up roll and unreel the roller and begin work, the wind-up roll begins to carry out the rolling to the filter membrane that pollutes, alright realize the operation from changing the filter membrane, can guarantee the precision that detects at every turn.

3. The utility model discloses in, detect the filtration ring of the big or small regulation upper end of particulate matter as required, will not satisfy the filtration ring dismantlement of filtering the particulate matter size, change the filtration ring that is suitable for with it, when changing, can also take out impingement plate and filter screen simultaneously, clear up the filter screen, guaranteed holistic filter effect.

Drawings

Fig. 1 is an overall sectional structural schematic diagram of the present invention;

fig. 2 is a schematic diagram of the overall sectional structure of the sampling end of the present invention;

FIG. 3 is an enlarged, partially cross-sectional view of the detection assembly of the present invention;

fig. 4 is a schematic diagram of the overall front view structure of the present invention.

The labels in the figure are: 1-sampling box, 2-sampling end, 21-sampling head, 22-air inlet, 23-filtering ring, 24-conical tube, 25-impact plate, 26-filter screen, 3-air inlet end, 4-detection component, 41-beta radioactive source, 42-first flow guide table, 43-detection cavity, 44-flow guide plate, 45-beta detection source, 5-wind-up roller, 6-air pump, 7-exhaust pipe, 8-triangular support, 9-rotary seat, 10-storage battery, 11-wind-down roller and 12-repair cover.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1-4, a high-precision comprehensive sampler for atmospheric particulates comprises a sampling box 1, an air inlet 3 is communicated with the inside of the upper side of the sampling box 1, a sampling end 2 is installed on the upper end of the air inlet 3 in a threaded manner, air can be collected through the sampling end 2, the sampling end 2 comprises a sampling head 21, an air inlet 22 is formed in the lower end of the periphery of the sampling head 21 in a surrounding manner, an impact head is installed at the inner end of the sampling head 21 between the air inlets 22, a plurality of groups of filter rings 23 are installed on the lower end of the sampling head 21 in a threaded manner, an impact plate 25 and a filter screen 26 are installed in the filter rings 23 from top to bottom, particulates with unnecessary sizes are filtered through the filter screen 26, a pore-diameter casting of the filter screen 26 from top to bottom is reduced, a detection assembly 4 is arranged at the lower end of the air inlet 3 in the sampling box 1, the detection assembly 4 comprises a detection cavity 43, a beta detection chamber 41 is installed in the detection cavity 43 right below the air inlet 3, a first diversion table 42 is arranged at the upper end of the beta detection source 41, a beta detection source 45 is arranged right below the beta detection source 41, beta electron source starts to work, high-energy electrons pass through the filter membrane 45, the high-energy electron source, the high-attenuation electron attenuation of the filter membrane 45, and the high-energy electron attenuation of the filter membrane can be used for calculating the residual electron attenuation of the residual particulates, and then the residual particulates.

It should be noted that the roating seat 9 is installed to the bottom of sampling case 1, and the lower extreme of roating seat 9 is connected with A-frame 8, can support the position of device through A-frame 8, uses when making things convenient for the staff to gather, and the sealing washer is installed in the coupling part cooperation between two liang of filter rings 23, can guarantee the leakproofness of filter rings 23 junction through the sealing washer that sets up, has guaranteed the precision of sampling.

It should be noted that, install the filter screen on the air inlet 22, the cross-section indent of impingement plate 25 and filter screen 26 has the radian, filters the particulate matter of the size that does not need through filter screen 26, then discharges into the detection chamber 43 with the particulate matter that needs in, has guaranteed the precision of later stage detection, and even distribution has a plurality of thru holes on the impingement plate 25, and the below of filter screen has the limiting plate at filter ring 23 internally mounted.

It should be noted that, the conical tube 24 is installed to the bottom screw thread of the filter ring 23 that is located the lowermost end of the sampling head 21, the lower end of the conical tube 24 is installed together with the 3 screw threads of inlet end, make after using, can dismantle the collection part, make things convenient for carrying in later stage, the downside right-hand member that detects the chamber 43 runs through the sampling box 1 right side outer wall and is connected with blast pipe 7, blast pipe 7 is installed with the coupling part that detects the chamber 43 and is extracted pump 6, extracted pump 6 work, pass through the 3 inside suction of inlet end with the air, accomplish and gather gaseous work, gather the gas after finishing, alright discharge through blast pipe 7.

It should be noted that, an unwinding roller 11 and a winding roller 5 are installed inside the sampling box 1 on two sides between the β radiation source 41 and the β detection source 45, a filter membrane is connected between the unwinding roller 11 and the winding roller 5, the power source from the unwinding roller 11 and the winding roller 5 comes from a driving motor, after detection, the winding roller 5 and the unwinding roller 11 start working, and the winding roller 5 starts winding up the contaminated filter membrane, so that the operation of self-replacing the filter membrane can be realized.

It should be noted that, there is repair lid 12 in the outside of sampling box 1 through hinge movable mounting, open and repair lid 12 and can conveniently maintain inside, conveniently change the filter membrane simultaneously, the internally mounted of sampling box 1 has battery 10, the lower extreme both sides of beta radiation source 41 install guide plate 44 on detecting the chamber 43 inner wall, beta detection source 45 is aimed at directly over to the bottom of guide plate 44, first water conservancy diversion platform 42 is whole for the toper, first water conservancy diversion platform 42 is whole to be narrow down wide, cooperation through first water conservancy diversion platform 42 and guide plate 44, can be with the abundant leading-in filter membrane directly over to beta detection source 45 of particulate matter, the detection precision in later stage has been guaranteed.

The working principle is as follows: when the device is used, firstly, the whole device is placed at a desired position, then the air suction pump 6 works to suck air into the device through the air inlet end 3, in the suction process, particles in the air collide with the impact plate 25 and the impact head, then the particles with the unnecessary size are filtered through the filter screen 26, then the required particles are discharged into the detection cavity 43, after the discharge, the particles flow into the right center of the filter membrane along the first flow guide table 42 and the flow guide plate 44 and then are attached to the filter membrane, then the beta radiation source 41 starts to work, high-energy electrons pass through the filter membrane to reach the beta detection source 45, at the moment, part of the high-energy electrons cannot pass through the filter membrane due to the particles on the filter membrane, then the concentration of the particles is calculated according to the attenuation and attenuation of the remaining high-energy electrons, and the detection of the particles can be completed.

After detecting, wind-up roll 5 and unreel 11 beginning work, wind-up roll 5 begins to carry out the rolling to the filter membrane that pollutes, alright realize the operation from changing the filter membrane, when needs are changed the filter membrane, open maintenance lid 12 can, simultaneously, can detect the filtration ring 23 of the big or small regulation upper end of particulate matter as required, will not satisfy filtration ring 23 dismantlement of filtering the particulate matter size, change the filtration ring 23 that is suitable for with it, simultaneously when changing, can also take out impingement plate 25 and filter screen 26, clear up filter screen 26, holistic result of use has been guaranteed.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a high accuracy atmospheric particulates integrated sampling ware, includes sampling box (1), its characterized in that: the inside intercommunication of the upside of sampling box (1) has inlet end (3), sampling end (2) are installed to the upper end screw thread of inlet end (3), sampling end (2) are including sampling head (21), air inlet (22) have been seted up in the surrounding of the peripheral lower extreme of sampling head (21), install impact head in the inner of sampling head (21) between air inlet (22), multiunit filter ring (23) are installed to the lower extreme screw thread of sampling head (21), impingement plate (25) and filter screen (26) have been placed from the top down to the inside of filter ring (23), the lower extreme of inlet end (3) is equipped with detecting element (4) in sampling box (1) inside, detecting element (4) are including detecting chamber (43), beta radiation source (41) are installed in detecting chamber (43) under inlet end (3), the upper end of beta radiation source (41) is provided with first water conservancy diversion platform (42), be equipped with beta radiation source (45) under beta radiation source (41).

2. A high accuracy sampler for collecting atmospheric particulates as defined in claim 1, further comprising: the rotary seat (9) is installed to the bottom of sampling case (1), the lower extreme of rotary seat (9) is connected with A-frame (8), the sealing washer is installed in the coupling part cooperation between two liang of filter ring (23).

3. A high accuracy sampler for collecting atmospheric particulates as defined in claim 1, further comprising: the air inlet (22) is provided with a filter screen, the cross sections of the impact plate (25) and the filter screen (26) are concave with radians, the impact plate (25) is uniformly provided with a plurality of through holes, and a limiting plate is arranged below the filter screen inside the filter ring (23).

4. The high-precision comprehensive sampler for atmospheric particulates according to claim 1, characterized in that: be located filter ring (23) bottom screw thread installation of sampling head (21) bottommost has toper pipe (24), the lower extreme and inlet end (3) screw thread installation of toper pipe (24) are in the same place, the downside right-hand member that detects chamber (43) runs through sampling box (1) right side outer wall connection and has blast pipe (7), blast pipe (7) and the coupling part that detects chamber (43) install aspiration pump (6).

5. The high-precision comprehensive sampler for atmospheric particulates according to claim 1, characterized in that: two sides between beta radiation source (41) and beta detection source (45) are equipped with unwinding roller (11) and wind-up roll (5) in the inside of sampling box (1), be connected with the filter membrane between unwinding roller (11) and wind-up roll (5), the power source that unwinding roller (11) and wind-up roll (5) arrived comes from driving motor.

6. A high accuracy sampler for collecting atmospheric particulates as defined in claim 1, further comprising: the utility model discloses a sampling box, including sampling box (1), detection chamber (43), baffle (44), first water conservancy diversion platform (42) are whole to be the toper, the outside of sampling box (1) has repair lid (12) through hinge movable mounting, the internally mounted of sampling box (1) has battery (10), baffle (44) are installed on detection chamber (43) inner wall to the lower extreme both sides of beta radiation source (41), the bottom of baffle (44) is aimed at beta and is detected source (45) directly over, first water conservancy diversion platform (42) are whole to be the toper, first water conservancy diversion platform (42) are whole to be under the narrow width.