Automatically Cleanable Particulate Resuspension Device

Abstract

The present invention provides a particulate matter resuspension device capable of automatic cleaning, which includes a resuspension barrel, a first cleaning member disposed in the resuspension barrel, a first driving member connected to the first cleaning member to drive the first cleaning member to move axially along the suspension barrel, a jet assembly that can move axially along the suspension barrel with the first cleaning member, and an air extraction assembly connected to the suspension barrel. For the particulate matter resuspension device of the present invention, after use, the first driving member drives the first cleaning member to move axially along the suspension barrel, and the first cleaning member sweeps the dust in the suspension barrel. At the same time, high-pressure gas is injected into the suspension barrel through the jet assembly to stir up the dust swept by the first cleaning member. At this time, the air extraction assembly extracts air, extracts the gas mixed with dust in the suspension barrel, and at the same time extracts the dust, thereby effectively cleaning the suspension barrel.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental monitoring equipment, and particularly relates to a particulate matter resuspension device capable of automatic cleaning. Background Art

[0002] The components of particulate matter in the atmospheric environment are complex, and the research has gradually developed from the study of quantity to the study of particulate matter components. Dust emission is one of the three major pollution sources leading to atmospheric particulate matter pollution and haze. Understanding the physical and chemical properties of dust is of great significance to human health, and the country and environmental testing agencies have paid increasing attention to this.

[0003] Dust emission is an unorganized emission source. The component analysis of this pollutant requires first collecting dust samples on-site, and then using a resuspension device in the laboratory to simulate the suspension of dust in the atmospheric environment. Furthermore, sampling membranes are used to collect particulate matter samples of different particle sizes in the resuspended dust, and after collection, the enriched substances are subjected to component analysis.

[0004] Existing particulate matter resuspension systems have many drawbacks, such as being inconvenient to use, consuming a large amount of manpower and material resources, and having low work efficiency. For example, most systems are manual operations, with complex procedures. Some can operate automatically, but after each sample is collected, the system needs to be manually cleaned, which is time-consuming and laborious. Some directly extract air to clean the system, and the effect cannot be guaranteed, which may lead to cross-contamination of subsequent samples. Summary of the Invention

[0005] The present invention aims at the problems existing in the prior art and proposes a particulate matter resuspension device capable of automatic cleaning.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] A particulate matter resuspension device capable of automatic cleaning, comprising a suspension barrel, a first cleaning member disposed in the suspension barrel, a first driving member connected to the first cleaning member to drive the first cleaning member to move axially along the suspension barrel, a jetting assembly that can move axially along the suspension barrel with the first cleaning member, and an air extraction assembly connected to the suspension barrel.

[0008] As a further optimization of the present invention, the jetting assembly includes a nozzle, a rotating member connected to the nozzle, and a second driving member connected to the rotating member to drive the rotating member to move axially along the suspension barrel.

[0009] As a further optimization of the present invention, it further includes a limiting member connected to the second driving member to limit the displacement of the rotating member.

[0010] As a further optimization of the present invention, the first driving member includes two connecting rods arranged oppositely, and both ends of the first cleaning member are respectively connected to the two connecting rods.

[0011] As a further optimization of the present invention, an air supplement port connected to an air source is further provided on the suspension bucket.

[0012] As a further optimization of the present invention, a first detection member capable of detecting the cleanliness of the suspension bucket is further included, and the first detection member is electrically connected to the first driving member and the second driving member respectively.

[0013] As a further optimization of the present invention, the air extraction assembly includes a ball valve and an air extraction pump connected to the ball valve.

[0014] As a further optimization of the present invention, a suspension bucket driving assembly for driving the suspension bucket to move and connected to the suspension bucket is further included. The suspension bucket driving assembly includes two driving rods arranged oppositely, and the two driving rods are linked.

[0015] As a further optimization of the present invention, a dust generating nozzle connected to the suspension bucket is further included. The dust generating nozzle includes a body having a receiving cavity, a first connection port provided at one end of the body, the first connection port being connected to the suspension bucket, a second cleaning member provided in the receiving cavity and away from the first connection port, a third driving member connected to the second cleaning member to drive the second cleaning member to move in a direction close to the first connection port, and a second connection port of an external pipeline communicating with the receiving cavity, the second connection port being provided between the cleaning member and the first connection port.

[0016] As a further optimization of the present invention, the dust generating nozzle further includes a first air inlet communicating with the receiving cavity, and the first air inlet is connected to an air source.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] For the particulate matter resuspension device of the present invention, after use, the first driving member drives the first cleaning member to move along the axial direction of the suspension bucket, and the first cleaning member sweeps the dust in the suspension bucket. At the same time, high-pressure gas is sprayed into the suspension bucket through the jetting assembly to stir up the dust swept by the first cleaning member. At this time, the air extraction assembly extracts air to extract the gas mixed with dust in the suspension bucket and at the same time extracts the dust, so as to effectively clean the suspension bucket. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of the particulate matter resuspension device described in the present invention;

[0021] Figure 2 It is a schematic structural diagram of the dust generating nozzle of the particulate matter resuspension device described in the present invention;

[0022] Figure 3 is Figure 2 a sectional view of the shown nozzle;

[0023] Figure 4 It is a schematic structural diagram of the particulate matter aerosol generation component of the particulate matter resuspension device described in the present invention;

[0024] In the above figures, 1, suspension bucket; 2, first cleaning member; 3, first driving member; 31, connecting rod; 4, jet component; 41, nozzle; 42, rotating member; 43, second driving member;; 44, limiting member; 5, air extraction component; 51, ball valve; 52, air extraction pump; 6, air supplement port; 7, filtering member; 8, first detection member; 9, dust generating nozzle; 91, body; 911, upper body; 9111, first air inlet; 912, lower body; 9121, first connection port; 9122, second connection port; 913, pressing plate; 913 pressing plate; 914, accommodating cavity; 92, second cleaning member; 93, third driving member; 94, pipeline; 100, particulate matter aerosol generation component; 110, sampling control component; 120, PM10 cutter; 130, PM2.5 cutter; 140, humidity measurement component; 150, pressure measurement component; 160, first gasket; 170, second gasket; 180, automatic film changing component; 190, chassis; 200, compressor; 210, suspension bucket driving component; 2101, driving rod. Specific Embodiments

[0025] Next, the present invention will be specifically described through exemplary embodiments. However, it should be understood that without further description, the units, structures, and features in one embodiment can also be beneficially combined with other embodiments.

[0026] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", "lower", "front", "rear", etc. is based on the positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0027] Referring to Figures 1-4 , the present utility model provides a particulate matter resuspension device capable of automatic cleaning, which includes a suspension barrel 1, a first cleaning member 2 disposed inside the suspension barrel 1, a first driving member 3 connected to the first cleaning member 2 to drive the first cleaning member 2 to move axially along the suspension barrel 1, a jet assembly 4 that can move axially along the suspension barrel 1 with the first cleaning member 2, and an air extraction assembly 5 connected to the suspension barrel 1.

[0028] In the particulate matter resuspension device of the present invention, after use, the first driving member 3 drives the first cleaning member 2 to move axially along the suspension barrel. The first cleaning member 2 sweeps the dust inside the suspension barrel 1. At the same time, high-pressure gas is sprayed into the suspension barrel 1 through the jet assembly 4 to stir up the dust swept by the first cleaning member 2. At this time, the air extraction assembly 5 extracts air, and extracts the gas mixed with dust inside the suspension barrel 1, and at the same time extracts the dust, thereby effectively cleaning the suspension barrel 1.

[0029] It should be noted that in this embodiment, the first cleaning member 2 is preferably a brush, which is more suitable for cleaning the inner wall of the barrel and can fully contact and clean. The first driving member 3 can be selected in ways such as a cylinder, an electric cylinder, a hydraulic cylinder, etc., as long as it can drive in a certain direction. In this embodiment, the air extraction assembly 5 includes a ball valve 51 and an air extraction pump 52 connected to the ball valve 51, so as to complete the air extraction work and prevent communication with the suspension barrel 1 when not working.

[0030] Further, the jet assembly 4 includes a nozzle 41, a rotating member 42 connected to the nozzle 41, and a second driving member 43 connected to the rotating member 42 to drive the rotating member 42 to move axially along the suspension barrel 1. During cleaning, the first driving member 3 and the second driving member 43 respectively drive the first cleaning member 2 and the rotating member 42 to move synchronously. The rotating member 42 drives the nozzle 41 to rotate, stirring the dust swept by the first cleaning member 2. In this embodiment, the jet assembly 4 further includes a limiting member 44 connected to the second driving member 43 to limit the displacement of the rotating member 42, thereby effectively controlling the moving distance of the rotating member 42 and preventing the situation of component damage caused by excessive moving distance of the rotating member 42. In this embodiment, the second driving member 43 can be selected in the form of a cylinder, an electric cylinder, etc. The rotating member 42 is preferably a rotating pneumatic joint, and the nozzle 41 is preferably a high-pressure nozzle and can be connected to high-pressure gas for use.

[0031] Further referring Figure 1 , the first driving member 3 includes two connecting rods 31 arranged oppositely, and both ends of the first cleaning member 2 are respectively connected to the two connecting rods 31, thereby effectively ensuring the stability of the contact between the first cleaning member 2 and the inner wall of the suspension barrel 1 and preventing the situation that part of the area cannot be effectively cleaned due to deformation during movement.

[0032] Further, the suspension barrel 1 is also provided with an air supplement port 6 connected to a gas source. When the air extraction assembly 5 extracts air, negative pressure will be generated in the suspension barrel 1. In order to balance the pressure and promote air exchange, filter elements such as filters can be arranged at the air supplement port 6, so as to provide clean air and cooperate with the air extraction assembly 5 to complete the cleaning work.

[0033] Further, it further includes a first detector 8 capable of detecting the cleanliness of the suspension barrel 1. The first detector 8 is electrically connected to the first driving member 3 and the second driving member 43 respectively, thereby effectively ensuring the cleanliness of the suspension barrel 1. When the first detector 8 detects that the cleanliness in the suspension barrel 1 does not meet the requirements, the first driving member 3 and the second driving member 43 control the first cleaning member 2 and the rotating member 42 to reciprocate for cleaning. When the first detector 8 detects that the cleanliness in the suspension barrel 1 meets the requirements, the first driving member 3 and the second driving member 43 stop. In this embodiment, the first detector 8 is preferably a light scattering detector, which can effectively detect the cleanliness in the suspension barrel.

[0034] Further, it further includes a suspension bucket driving assembly 210 connected to the suspension bucket 1 to drive the movement of the suspension bucket 1. The suspension bucket driving assembly 210 includes two driving rods 2101 arranged oppositely, and the two driving rods 2101 are linked, so as to ensure the balance when the suspension bucket 1 is lifted. It should be noted that in this embodiment, a lead screw + worm and worm gear mechanism is additionally adopted to ensure self-locking safety, and a limit mechanism is used to ensure the determination of the lifting and lowering positions.

[0035] Further referring to Figures 1-3 , it further includes a dust generating nozzle 9 connected to the suspension bucket. The dust generating nozzle 9 includes a body 91 having a receiving cavity 914, a first connection port 9121 provided at one end of the body 91, the first connection port 9121 is connected to the suspension bucket 1, a second cleaning member 92 provided in the receiving cavity 914 and away from the first connection port, a third driving member 93 connected to the second cleaning member 92 to drive the second cleaning member 92 to move towards the direction close to the first connection port 9121, and a second connection port 9122 of an external pipeline communicated with the receiving cavity 914. The second connection port 9122 is provided between the second cleaning member 92 and the first connection port 9121. In the above solution, through the arrangement of the third driving member 93 and the second cleaning member 92, the inner wall of the receiving cavity 914 can be effectively cleaned after use. At the same time, by arranging the second connection port 9122 between the first connection port 9121 and the second cleaning member 92, the influence of the second cleaning member 92 on the particles during the operation of the device can be prevented, and the particles can be prevented from impacting on the second cleaning member 92, so as to realize the normal operation of the device and can also perform automatic cleaning.

[0036] Further referring to Figures 2-3 , a first air inlet 9111 communicated with the receiving cavity 914 is further provided on the body 91. The first air inlet 9111 is connected to a gas source. In the above solution, the first air inlet 9111 is connected to the gas source, and air can be blown during cleaning to further ensure the cleaning effect. In this embodiment, the gas source is high-pressure gas, which further improves the cleaning effect.

[0037] Further, the body 91 includes an upper body 911 and a lower body 912, and a pressing plate 913 provided at one end of the upper body 911 away from the lower body 912. The first connection port 9121 is provided on the lower body 912, and the third driving member 93 is provided on the pressing plate 913. The arrangement of the upper body 911 and the lower body 912 reduces the processing difficulty. The upper body 911 is pressed on the lower body 912 through the pressing plate 913, and at the same time, the third driving member 93 is provided on the upper body 911, which is easy to install. In this embodiment, the third driving member 93 is preferably a micro cylinder, which is easy to control and not easily affected by dust.

[0038] The particulate matter resuspension device capable of automatic cleaning according to the present invention further includes a particulate matter aerosol generation component 100 that can internally accommodate a plurality of sample bottles, a sampling control component 110, a PM10 cutter 120, a PM2.5 cutter 130, a humidity measurement component 140 that can detect the humidity of the suspension bucket 1, a pressure measurement component 150 for measuring the pressure of the suspension bucket 1, a first gasket 160 and a second gasket 170 for sealing, a suspension bucket driving component 210, and an automatic film changing component 180 for automatic film changing. The dust generating nozzle 9, the filter element 7, and the air supplement port 6 are provided at the top cover of the suspension bucket 1. The particulate matter aerosol generation component 100 includes components such as a dust blowing ten-way valve, a solenoid valve, a dust loading bucket, and a dust discharging ten-way valve.

[0039] When the particulate matter resuspension device capable of automatic cleaning according to the present invention is in an experiment, first, the collected and processed dust is placed on the particulate matter aerosol generation component 100, and multiple dust buckets can be placed. Before sampling, the suspension bucket 1 is first cleaned. The first driving member 3 drives the first cleaning member 2 to clean. Synchronously, the second driving member 43 drives the nozzle 41 to move and spray high-pressure air to stir up the cleaned dust. At this time, the air extraction component 5 starts to extract air, and the air supplement port 6 replenishes clean air until the first detection member 8 detects that the cleaning effect meets the requirements;

[0040] During sampling, a small air flow will blow the dust in the particulate aerosol generation assembly 100, and the dust will pass through the dust generating nozzle 9 and enter the suspension barrel 1. Meanwhile, according to the sampling air flow, the air supplement port 6 will introduce the corresponding air flow to keep the air pressure in the suspension barrel 1 in a slightly negative pressure state. This pressure is measured by the pressure measurement assembly 100 and feedback is provided. Meanwhile, the control assembly 110 is used to start sampling. The mixed dust in the suspension barrel 1 will sequentially pass through the PM10 cutter 120 and the PM2.5 cutter 130 and be enriched on the filter membrane. At that time, the PM10 cutter 120 and the PM2.5 cutter 130 can be selectively configured according to needs to collect different particles. The state during the sampling process is detected and feedback is provided by the humidity measurement assembly 140 and the pressure measurement assembly 150. The sealing effect is ensured by the first gasket 160 and the second gasket 170. At this time, the collection of a sample of dust is completed.

[0041] After sampling is completed, the first cleaning member 2 and the second cleaning member 92 are used to clean the suspension barrel 1 and the dust generating nozzle 9. Subsequently, the automatic membrane changing assembly 180 automatically completes the replacement of a new membrane. After the membrane changing is completed, the generation of the next sample of dust automatically continues, and the dust generation process is the same as above, and the cycle is repeated successively according to the number of samples of dust.

[0042] The above is only a preferred embodiment of the present invention and is not a limitation of the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. An automatic cleaning particulate resuspension device, characterized in that, it includes a suspension bucket, a first cleaning member disposed within the suspension bucket, a first driving member connected to the first cleaning member to drive the first cleaning member to move axially along the suspension bucket, a jet assembly that can move axially along the suspension bucket with the first cleaning member, and an air extraction assembly connected to the suspension bucket; it further includes a dust generating nozzle connected to the suspension bucket, the dust generating nozzle includes a body having a receiving cavity, a first connection port disposed at one end of the body, the first connection port is connected to the suspension bucket, a second cleaning member disposed in the receiving cavity away from the first connection port, a third driving member connected to the second cleaning member to drive the second cleaning member to move in a direction close to the first connection port, a second connection port of an external pipeline communicating with the receiving cavity, and the second connection port is disposed between the cleaning member and the first connection port.

2. The automatic cleaning particulate resuspension device according to claim 1, characterized in that, the jet assembly includes a nozzle, a rotating member connected to the nozzle, and a second driving member connected to the rotating member to drive the rotating member to move axially along the suspension bucket.

3. The automatic cleaning particulate resuspension device according to claim 2, characterized in that, it further includes a limiting member connected to the second driving member to limit the displacement of the rotating member.

4. The automatic cleaning particulate resuspension device according to claim 1, characterized in that, the first driving member includes two connecting rods disposed oppositely, and two ends of the first cleaning member are respectively connected to the two connecting rods.

5. The automatic cleaning particulate resuspension device according to claim 1, characterized in that, the suspension bucket is further provided with a gas supplement port connected to a gas source.

6. The automatic cleaning particulate resuspension device according to claim 1, characterized in that, it further includes a first detection member that can detect the cleanliness of the suspension bucket, and the first detection member is electrically connected to the first driving member and the second driving member respectively.

7. The automatic cleaning particulate resuspension device according to claim 1, characterized in that, the air extraction assembly includes a ball valve and an air extraction pump connected to the ball valve.

8. The automatic cleaning particulate resuspension device according to claim 1, characterized in that, it further includes a suspension bucket driving assembly connected to the suspension bucket to drive the suspension bucket to move, and the suspension bucket driving assembly includes two driving rods disposed oppositely, and the two driving rods are linked.

9. The automatic cleaning particulate resuspension device according to claim 1, characterized in that, the dust generating nozzle further includes a first air inlet communicating with the receiving cavity, and the first air inlet is connected to a gas source.

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