Particulate matter separation device and variable-particle-size particulate matter generation system

Abstract

The invention provides a particulate matter separation device and a variable-particle-size particulate matter generation system. The particulate matter separation device at least comprises a first separator and a second separator, the first particle size capable of being separated by the first separator is different from the second particle size capable of being separated by the second separator, and the particulate matter separation device comprises a flow path allowing particulate matter to flow through the first separator and / or the second separator. A plurality of control valves are arranged on the flow path, and by controlling opening and closing of the control valves, the first separator is selected to separate particulate matters, or the second separator is selected to separate particulate matters, or the particulate matters enter the first separator and the second separator in sequence to separate particulate matters.

Description

TECHNICAL FIELD

[0001] The present application relates to a particulate matter separation device and a particulate matter generation system with variable particle size. BACKGROUND

[0002] As an example of the particulate matter generation system, a dust aerosol generation system can be cited. The dust aerosol generation system, as a necessary tool for calibrating an atmospheric particulate matter measuring instrument, can be used to generate aerosol particles of solid, which are solid or liquid particles suspended in a gas, and the aerosol with an aerodynamic diameter of less than or equal to 10 μm is called inhalable particles, often represented by PM10, and the aerosol with an aerodynamic diameter of less than or equal to 2.5 μm is called PM2.5. Such an aerosol generation system is widely used in the study of nanoparticle properties and the calibration of environmental monitoring instruments.

[0003] For example, patent CN208795574U discloses a feed generation system, which comprises a feeder, a stock bin and a diluter. The stock bin is used to store materials, and the feeder is used to provide power for feeding to realize feeding. The diluter comprises a shell, the shell has a material passage for material flow, and the material in the stock bin can enter the material passage of the diluter through the feed inlet. The shell is also provided with at least two discharge ports in communication with the material passage, and the shell is also provided with an air inlet in communication with an air compressor. The air inlet is used to pass compressed air into the material passage of the diluter. SUMMARY

[0004] However, in the dust aerosol generation system as described above, the particle size of the dust aerosol emitted can only be determined by the dust raw material, and it is not possible to emit aerosol particles of a specific particle size range. However, when calibrating an atmospheric particulate matter measuring instrument based on a mass sensor, it is particularly important to control the particle size of the dust aerosol.

[0005] Therefore, the purpose of the present application is to provide a particulate matter separation device and a particulate matter generation system with variable particle size, which can supply particulate matter of a specific particle size range.

[0006] According to a technical solution of the present application, a particulate matter separation device is provided, which at least comprises a first separator and a second separator. The first particle size that can be separated by the first separator is different from the second particle size that can be separated by the second separator. The particulate matter separation device comprises a flow path for the flow of particulate matter through the first separator and / or the second separator. A plurality of control valves are provided on the flow path. By controlling the opening and closing of the control valves, the first separator is selected to separate the particulate matter, or the second separator is selected to separate the particulate matter, or the first separator and the second separator are selected to be entered in sequence to separate the particulate matter.

[0007] In at least one embodiment, the first separator includes an inlet, a first outlet, and a second outlet. Within the first separator, particles larger than the first particle size flow to the first outlet, and particles smaller than or equal to the first particle size flow to the second outlet. The second separator includes an inlet, a first outlet, and a second outlet. Within the second separator, particles larger than the second particle size flow to the first outlet, and particles smaller than or equal to the second particle size flow to the second outlet.

[0008] In at least one embodiment, the first particle size is larger than the second particle size, and the second outlet of the first separator is connected to the inlet of the second separator. As the control valve, a first control valve is provided upstream of the inlet of the first separator, a second control valve is provided downstream of the second outlet of the first separator, a third control valve is provided upstream of the inlet of the second separator and downstream of the second control valve, and a fourth control valve is provided downstream of the second outlet of the second separator.

[0009] In at least one embodiment, the particulate matter separation device further includes a first branch flow path and a second branch flow path. The first branch flow path branches off from the upstream side of the first control valve and is connected to the downstream side of the fourth control valve. The second branch flow path branches off from the flow path between the second control valve and the third control valve and is connected to the first branch flow path. As the control valve, in the first branch flow path, a fifth control valve is provided on the upstream side of the part where the second branch flow path branches off, and a sixth control valve is provided on the downstream side of the part where the second branch flow path branches off.

[0010] In at least one embodiment, the first separator has a first flow path and a second flow path, the first flow path extending axially from the inlet and connected to a flow path leading to the second outlet, the second flow path branching off midway from the first flow path and connected to the first outlet; the second separator has a first flow path and a second flow path, the first flow path extending axially from the inlet and connected to a flow path leading to the second outlet, the second flow path branching off midway from the first flow path and connected to the first outlet.

[0011] In at least one embodiment, particulate matter separation is performed in the first separator by opening the first control valve, the second control valve, and the sixth control valve, and closing the other control valves; particulate matter separation is performed in the second separator by opening the third control valve, the fourth control valve, and the fifth control valve, and closing the other control valves; and particulate matter separation is performed sequentially using the first separator and the second separator by opening the first control valve, the second control valve, the third control valve, and the fourth control valve, and closing the other control valves.

[0012] In at least one embodiment, the particulate matter separation device includes two or more separators, including the first separator and the second separator, which are connected in series with each other. By controlling the opening and closing of the control valve, at least one of the separators is selected to separate particulate matter.

[0013] In at least one embodiment, the particulate matter separation device includes two or more separator groups formed by separators including the first separator and the second separator connected in series with each other, the separator groups being connected in parallel with each other, and at least one of the separators being selected to separate particulate matter by controlling the opening and closing of the control valve.

[0014] In at least one embodiment, the particulate matter separation device further includes a collection device, wherein the first outlet and the second outlet of the first separator, and the first outlet and the second outlet of the second separator are respectively connected to the collection device.

[0015] In at least one embodiment, the collection device includes at least a first collection chamber and a second collection chamber. The collection device also has a collection channel connecting the first collection chamber and the second collection chamber. The number of collection channels corresponds to the number of output flow paths of the particulate matter separation device. A collection pipe control valve is provided at both ends of each collection channel. By controlling the opening and closing of the collection pipe control valve, particulate matter can be selectively collected into the first collection chamber or the second collection chamber.

[0016] According to another technical solution of this application, a variable particle size particulate matter generation system is provided, which includes a particulate matter generation device and a particulate matter separation device as described above.

[0017] In at least one embodiment, the particulate matter generating apparatus includes a sample storage cylinder, a feeding mechanism, and a diluent, wherein the feeding mechanism conveys the sample in the sample storage cylinder to the diluent, and the diluent is used to dilute the concentration of the sample.

[0018] In at least one embodiment, the particulate generating apparatus further includes a first air pump for introducing compressed air into the diluter.

[0019] In at least one embodiment,

[0020] According to this application, a particulate matter separation device and a variable particle size generation system for supplying particulate matter with a specific particle size range can be provided. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a variable particle size generation system according to one embodiment of this application.

[0022] Figure 2 This is a schematic diagram of a particulate matter separation device according to one embodiment of this application.

[0023] Figure 3 This is a schematic diagram of the separator of a particulate matter separation device according to one embodiment of this application.

[0024] Figure 4 This is a schematic diagram of a diluent for a variable particle size particulate matter generation system according to one embodiment of this application.

[0025] Figure 5 This is a schematic diagram of a variable particle size generation system according to a modified example of this application.

[0026] Figure 6 This is a schematic diagram of a variable particle size generation system, which is another variation of this application.

[0027] Explanation of reference numerals in the attached figures

[0028] 1. Particulate matter generating device; 101. Cylinder; 102. Diluter; 1021. Shell; 1022. Feed inlet; 1023. First discharge outlet; 1024. Second discharge outlet; 1025. Air inlet; 1026. Contraction section; 1027. Throat section; 1028. Diffusion section; 104. Dryer filter; 105. Pressure gauge; 106. Control valve; 107. Flow meter; 108. First air pump; 109. Air inlet pipe; 110. Second air pump; 111. Feed pipe; 112. Steel brush; 113. Electric push rod; 2. Particulate matter separating device; 201. First separator; 202. Second separator; 203. Shell; 204. Inlet; 205. First outlet; 206. Second outlet; 207. First branch flow path; 208. Second branch flow path; 3. First collection chamber; 4. Second collection chamber; 103. Third collection chamber; 5. Input flow path; 500. Main flow path; 501. First output flow path; 502. Second output flow path; 503. Third output flow path; 6. Collection pipe; 61. Collection pipe control valve; 7. Particle size monitoring device; 7a. Dust discharge valve; 8. Ash discharge valve; 9. Sample; 701. First control valve; 702. Second control valve; 703. Third control valve; 704. Fourth control valve; 705. Fifth control valve; 706. Sixth control valve. Detailed Implementation

[0029] The specific embodiments of this application will be described below with reference to the accompanying drawings. It should be noted that the following embodiments are merely illustrative of the technical solutions of this application and do not limit the scope of protection of this application. Modifications and alterations made within the scope of the technical concept of this application are all within the scope of protection of this application. Furthermore, all the accompanying drawings are schematic diagrams, and there may be discrepancies between the scale and the actual scale.

[0030] Furthermore, the particulate matter separation device and variable particle size particulate matter generation system of this application can be applied to research such as the study of nanoparticle properties and the calibration of environmental monitoring instruments, as well as to operations that directly separate dust from the atmosphere. The particulate matter separation device and variable particle size particulate matter generation system of this application can be applied to various fields according to actual needs.

[0031] Particulate matter separation device

[0032] In this application, the particulate matter separation device may include at least two separators. The main working principle of the separators is to separate particles of different sizes by utilizing the different inertial forces they experience, thereby performing particle size separation.

[0033] In one embodiment of this application, such as Figure 1 and Figure 2As shown, the particulate matter separation device 2 includes a first separator 201 and a second separator 202. The first separator 201 and the second separator 202 have the same structure and principle, but the particle size that the first separator 201 can separate is different from that that that the second separator 202 can separate. Particulate matter can be introduced into the first separator 201 and / or the second separator 202 using external forces such as a high-speed airflow from an air pump, enabling the separation of particulate matter within a specific size range using the first separator 201 and / or the second separator 202.

[0034] like Figure 3 As shown, the first separator 201 includes a housing 203, an inlet 204, a first outlet 205, and a second outlet 206. Within the housing 203, a flow path branching from the inlet 204 forms a flow path leading to the first outlet 205 and a flow path leading to the second outlet 206. Specifically, the first separator 201 can be configured to have a first flow path and a second flow path. The first flow path extends axially from the inlet 204 and connects to the flow path leading to the second outlet 206. The second flow path branches off midway from the first flow path and connects to the first outlet 205. The inner diameter of the flow path leading to the second outlet 206 is smaller than the inner diameter of the flow path leading to the first outlet 205. Here, the inner diameter of the flow path leading to the second outlet 206 is defined as a first particle size, which is the particle size value of the particulate matter that the first separator 201 can separate. Particulate matter can enter the flow path inside the housing 203 through the inlet 204. Then, particles larger than the first particle size flow to the first outlet 205, and particles smaller than or equal to the first particle size flow to the second outlet 206.

[0035] Similar to the first separator 201, the second separator 202 also includes a housing 203, an inlet 204, a first outlet 205, and a second outlet 206. Specifically, the second separator 202 may have a first flow path and a second flow path. The first flow path extends axially from the inlet 204 and connects to the flow path leading to the second outlet 206. The second flow path branches off midway from the first flow path and connects to the first outlet 205. The inner diameter of the flow path leading to the second outlet 206 is smaller than the inner diameter of the flow path leading to the first outlet 205. However, in the second separator 202, the inner diameter of the flow path leading to the second outlet 206 is set as a second particle size, which is the particle size value of the particulate matter that the second separator 202 can separate.

[0036] Alternatively, the second particle size can be set to be smaller than the first particle size of the first separator 201. As an example, the first particle size of the first separator 201 can be set to 6 μm, and the second particle size of the second separator 202 can be set to 3 μm. In this case, in the first separator 201, particles with a particle size greater than 6 μm flow to the first outlet 205, and particles with a particle size less than or equal to 6 μm flow to the second outlet 206. Similarly, in the second separator 202, particles with a particle size greater than 3 μm flow to the first outlet 205, and particles with a particle size less than or equal to 3 μm flow to the second outlet 206.

[0037] Furthermore, the specific structures of the flow paths leading to the first outlet 205 and the second outlet 206 in the first separator 201 and the second separator 202 can be arbitrarily designed as needed. For example, they can be designed as follows: Figure 3 As shown, the flow path leading to the second outlet 206 is designed as a meandering serpentine flow path.

[0038] like Figure 2 As shown, in the particulate separator 2, the first separator 201 and the second separator 202 can be connected in series. Specifically, the particulate separator 2 further includes: an input flow path 5, which is connected to the inlet 204 of the first separator 201 for introducing particulate matter into the particulate separator 2; a main flow path 500, which connects the second outlet 206 of the first separator 201 to the inlet 204 of the second separator 202 for introducing particulate matter smaller than or equal to a first particle size (e.g., smaller than or equal to 6 μm) into the second separator 202; and a first output flow path 501, which is connected to the second outlet 206 of the second separator 202 for discharging particulate matter smaller than or equal to the first particle size (e.g., smaller than or equal to 6 μm) or the second particle size (e.g., smaller than or equal to 3 μm). The system includes: a second output flow path 502 connected to the first outlet 205 of the first separator 201 for outputting particles larger than a first particle size (e.g., larger than 6 μm); a third output flow path 503 connected to the first outlet 205 of the second separator 202 for outputting particles larger than a second particle size (e.g., larger than 3 μm); a first branch flow path 207 branching from the upstream side of the first separator 201 in the input flow path 5 and connected to the downstream side of the second outlet 206 of the second separator 202 in the first output flow path 501; and a second branch flow path 208 connecting the first branch flow path 207 to the main flow path 500.

[0039] In addition, the particulate separator 2 also includes at least one control valve, which opens and closes the flow path to control the flow direction of the particulate matter. The control valve can employ a suitable structure, such as an electrically controlled valve. For example, ... Figure 2As shown, in the input flow path 5, a first control valve 701 is provided downstream of the branch point where the first branch flow path 207 branches off and upstream of the inlet 204 of the first separator 201. In the main flow path 500, a second control valve 702 is provided downstream of the second outlet 206 of the first separator 201 and upstream of the branch point where the second branch flow path 208 branches off. Furthermore, in the main flow path 500, a third control valve 703 is provided downstream of the branch point where the second branch flow path 208 branches off and upstream of the inlet 204 of the second separator 201.

[0040] In the first output flow path 501, a fourth control valve 704 is provided downstream of the second outlet 206 of the second separator 202 and upstream of the branch point into the first branch flow path 207. In the first branch flow path 207, a fifth control valve 705 is provided upstream of the branch point into the second branch flow path 208, and a sixth control valve 706 is provided downstream of the branch point into the second branch flow path 208.

[0041] exist Figure 2 In the structure shown, particulate matter separation can be performed, for example, by controlling the opening and closing of each control valve.

[0042] When the first separator 201 is selected for particulate matter separation, the first control valve 701, the second control valve 702, and the sixth control valve 706 are opened, while the other control valves are closed. In this case, particulate matter is introduced into the first separator 201 via the input flow path 5. Particles larger than the first particle size (e.g., larger than 6 μm) flow into the second output flow path 502 via the first outlet 205 and are transported to a predetermined collection device by the second output flow path 502. Additionally, particles smaller than or equal to the first particle size (e.g., smaller than or equal to 6 μm) flow into the main flow path 500 via the second outlet 206, then sequentially flow through the second branch flow path 208 and the first branch flow path 207 before flowing into the first output flow path 501 and being transported to a predetermined collection device by the first output flow path 501.

[0043] When the second separator 202 is selected for particulate matter separation, the third control valve 703, the fourth control valve 704, and the fifth control valve 705 are opened, and the other control valves are closed. In this case, particulate matter is introduced into the second separator 202 via the input flow path 5, the first branch flow path 207, the second branch flow path 208, and the main flow path 500. Particulate matter larger than the second particle size (e.g., larger than 3 μm) flows into the third output flow path 503 via the first outlet 205 and is conveyed to a predetermined collection device by the third output flow path 503. Particulate matter smaller than or equal to the second particle size (e.g., smaller than or equal to 3 μm) flows into the first output flow path 501 via the second outlet 206 and is conveyed to a predetermined collection device by the first output flow path 501.

[0044] When selecting to separate particulate matter using the first separator 201 and the second separator 202 sequentially, the first control valve 701, the second control valve 702, the third control valve 703, and the fourth control valve 704 are opened, while the other control valves are closed. In this case, particulate matter is introduced into the first separator 201 via the input flow path 5. Particles larger than the first particle size (e.g., larger than 6 μm) flow into the second output flow path 502 via the first outlet 205 and are transported to a predetermined collection device by the second output flow path 502. Additionally, particles smaller than or equal to the first particle size (e.g., smaller than or equal to 6 μm) flow into the main flow path 500 via the second outlet 206 and then into the second separator 202 via the inlet 204. Next, particles larger than the second particle size (e.g., larger than 3 μm) flow into the third output flow path 503 via the first outlet 205 and are transported to a predetermined collection device by the third output flow path 503. Particles smaller than or equal to the second particle size (e.g., smaller than or equal to 3 μm) flow into the first output flow path 501 through the second outlet 206 and are transported by the first output flow path 501 to a predetermined collection device.

[0045] <Collection Equipment>

[0046] The particulate matter separation device 2 may also include a collection device for collecting the particulate matter separated by the particulate matter separation device 2.

[0047] like Figure 2 As shown, the collection device may include a first collection chamber 3 and a second collection chamber 4. Furthermore, a collection channel 6 is provided connecting the first collection chamber 3 and the second collection chamber 4. Collection pipe control valves 601 are respectively provided at both ends of the collection channel 6 to control the flow of particles to the first collection chamber 3 or the second collection chamber 4.

[0048] When the collection pipe control valve 601 on the first collection chamber 3 side is open and the collection pipe control valve 601 on the second collection chamber 4 side is closed, the particulate matter flowing into the collection channel 6 is collected by the first collection chamber 3. When the collection pipe control valve 601 on the first collection chamber 3 side is closed and the collection pipe control valve 601 on the second collection chamber 4 side is open, the particulate matter flowing into the collection channel 6 is collected by the second collection chamber 4.

[0049] The number of collection channels can be designed based on the number of output flow paths of the particulate matter separator 2. For example, such as Figure 2As shown, three collection channels 6 can be provided, each connected at both ends to the first collection chamber 3 and the second collection chamber 4 respectively. Furthermore, the three collection channels 6 are respectively connected to the first output flow path 501, the second output flow path 502, and the third output flow path 503. Thus, particles with different particle size ranges can be transported to the first collection chamber 3 or the second collection chamber 4 via the first output flow path 501, the second output flow path 502, and the third output flow path 503 respectively.

[0050] <Variable Particle Size Generation System>

[0051] In one embodiment of this application, the variable particle size particulate matter generation system may include a particulate matter generation device 1 and a particulate matter separation device 2.

[0052] As an example of particulate matter generating device 1, it can be adopted Figure 1 The structure shown is as follows. Specifically, the particulate matter generating device 1 includes a material cylinder 101 for storing sample 9, a feeding mechanism, and a diluter 102. The feeding mechanism transports the sample in the material cylinder 101 to the diluter 102. The diluter 102 has the function of diluting the material, which can reduce the material concentration. For example, it can transform the original high-flow-rate, high-concentration dust aerosol into a low-flow-rate, low-concentration dust aerosol, and facilitate the obtaining of a stable low-flow-rate, low-concentration dust aerosol.

[0053] like Figure 4 As shown, the diluter 102 may include a housing 1021, the interior of which has a material channel for material flow. The housing 1021 has an inlet 1022, a first outlet 1023, and a second outlet 1024 communicating with the material channel. A feeding mechanism can introduce the sample from the material cylinder 101 into the material channel through the inlet 1022. The first outlet 1023 may be connected to the particulate matter separator 2, and the second outlet 1024 may be connected to the third collection chamber 103.

[0054] An air inlet 1025 is also provided in the housing 1021. The air inlet 1025 is connected to the first air pump 108 through an air inlet pipe 109 and is used to introduce compressed air into the material channel. The axis of the air inlet 1025 can be perpendicular to the axis of the feed inlet 1022, but is not limited thereto; the axis of the air inlet 1025 can also be inclined relative to the axis of the feed inlet 1022. In addition, an air nozzle can be installed at the air inlet 1025.

[0055] The material channel inside the housing 1021 can be configured as a Venturi tube structure. Specifically, the material channel inside the housing 1021 can have a converging section 1026, a throat section 1027, and a diffuser section 1028 connected in sequence. The feed inlet 1022 and the air inlet 1025 are both located upstream of the converging section 1026, and the first discharge outlet 1023 and the second discharge outlet 1024 are both located downstream of the diffuser section 1028. The specific dimensions of the converging section 1026, the throat section 1027, and the diffuser section 1028 can be set as needed.

[0056] The cross-sectional areas of the first discharge port 1023 and the second discharge port 1024 can be set as needed. For example, the cross-sectional area of ​​the first discharge port 1023 can be set to be larger than that of the second discharge port 1024. The axis of the first discharge port 1023 can be set to be perpendicular to the axis of the second discharge port 1024, or it can be set to be inclined relative to the axis of the second discharge port 1024.

[0057] Alternatively, a dryer filter 104 for dehumidifying and removing dust from the air in the intake pipe 109 can be provided between the first air pump 108 and the diluter 102, and a pressure gauge 105 for measuring the pressure in the intake pipe 109 can be provided between the first air pump 108 and the dryer filter 104. The dryer filter 104 improves the cleanliness of the air entering the diluter 102, helping to prevent dust and raw materials from agglomerating and causing blockages within the system under prolonged operating conditions. The pressure gauge 105 facilitates monitoring of the pressure in the intake pipe 109 by personnel, allowing for timely remedial measures when abnormal pressure occurs.

[0058] Furthermore, a regulating valve 106 for adjusting the air flow rate in the intake pipe 109 and a flow meter 107 for measuring the air flow rate in the intake pipe 109 can be provided between the first air pump 108 and the diluter 102. The regulating valve 106 and the flow meter 107 facilitate the monitoring and adjustment of the gas flow rate in the intake pipe 109 by the operator.

[0059] The feeding mechanism may include, for example, a second air pump 110, a feeding pipe 111, a steel brush 112, and an electric push rod 113. The feeding pipe 111 is connected to the inlet 1022. The steel brush 112 and the electric push rod 113 are both connected to the material cylinder 101. The steel brush 112 extends into the feeding pipe 111 within an isolation box. The electric push rod 113 is used to push the compacted dust sample in the material cylinder 101 to contact the steel brush 112. The steel brush 112 is used to transport the dust sample to the feeding pipe 111 during rotation.

[0060] The steel brush 112 can be configured as a circular wheel structure, which can be driven to rotate by a motor. An electric push rod 113 extends into the feed cylinder 101, at which point the dust sample in the feed cylinder 101 is positioned between the electric push rod 113 and the steel brush 112. When the electric push rod 113 actuates, it pushes the dust sample towards the steel brush 112. The rotating steel brush 112 scrapes off the dust sample. After the dust sample is introduced into the feed pipe 111, the high-pressure gas generated by the second air pump 110 transports the dust sample to the diluter 102.

[0061] In addition, in one embodiment of the variable particle size generation system of this application, such as Figure 1 As shown, a particle size monitoring device 7 for monitoring particulate matter size can also be connected to the output end of the first collection chamber 3. A dust discharge valve 7a can be connected to the output end of the particle size monitoring device 7. The particle size monitoring device 7 can be used to detect the particle size of particulate matter in the first collection chamber 3, for example, a TSI8530 portable dust detector can be used. The dust discharge valve 7a can be connected to the generation chamber for research on nanoparticle characteristics and calibration of environmental monitoring instruments.

[0062] In addition, such as Figure 2 and Figure 4 As shown, ash discharge valves 8 can also be connected to the output ends of the second collection chamber 4 and the third collection chamber 103 to facilitate ash discharge operations.

[0063] In one embodiment of the variable particle size generation system of this application, particles can be generated using a particle generation device 1, and then the particles can be introduced into a particle separation device 2 for particle size separation. The separated particles within a specific particle size range can then be collected using a collection device.

[0064] <Effects>

[0065] In this application, the particulate matter separation device 2 has separators such as a first separator 201 and a second separator 202, and therefore, it is possible to separate particles within a specific particle size range using the particulate matter separation device 2.

[0066] Furthermore, in this application, the particle size that the first separator 201 can separate (i.e., the first particle size) is different from the particle size that the second separator 202 can separate (i.e., the second particle size). Moreover, by controlling the opening and closing of each control valve, the particulate separation device 2 can perform various separation operations. For example, it can select the first separator 201 for particle separation, select the second separator 202 for particle separation, or select to separate particles using the first separator 201 and the second separator 202 sequentially. Therefore, it is possible to separate particles of different specific particle size ranges as needed. Furthermore, by selecting to separate particles using the first separator 201 and the second separator 202 sequentially, multi-stage separation is possible. Thus, it is possible to adapt to different particle size requirements, resulting in a wider range of selectable particle sizes.

[0067] <Variation Example>

[0068] This application is not limited to the above-described embodiments, and various changes and modifications can be made within the scope of the technical concept of this application.

[0069] (i) In the above embodiment, the particulate matter separation device 2 includes two separators: a first separator 201 and a second separator 202. However, it is not limited to this; the particulate matter separation device 2 may also include more than two separators. This results in a wider range of selectable particle sizes. The principle and structure of each separator can be the same as the first separator 201 and the second separator 202 described above, but they can have different separable particle size values, which will be described in detail here. In this case, a corresponding control valve can be designed as needed.

[0070] For example, such as Figure 5 As shown, the particulate matter separation device 2 can be configured to include four separators connected in series. Alternatively, it can be configured to have two or more separators connected in parallel.

[0071] In addition, such as Figure 6 As shown, it can also be configured as two or more separator groups formed by connecting multiple separators in series, and then connecting each separator group in parallel. For the separator groups on each branch in parallel, the number of separators connected in series can be two or more, such as four. In addition, the number of separators connected in series can be the same or different. In this case, relevant control valves also need to be installed between different groups.

[0072] Alternatively, it can be configured such that there are two or more separator groups formed by connecting multiple separators in series, then a portion of the separator groups are connected in parallel to form a separator group, and then the separator groups are connected in series with each other.

[0073] (ii) In the above embodiments, the first separator 201 and the second separator 202 each include one inlet and two outlets, but are not limited thereto, and the number of inlets and / or outlets may be increased as needed.

[0074] (iii) In the above embodiment, the collection device includes a first collection chamber 3, a second collection chamber 4, and a collection channel. However, it is not limited to this; other suitable structures may be adopted as long as they can be connected to the output flow path of the particulate matter separation device 2 and collect the separated particulate matter.

[0075] (iv) The particulate matter generating apparatus 1 of this application is not limited to Figure 1 The structure shown can also be adapted to other suitable structures.

[0076] (v) In the above embodiment, particulate matter is introduced into the particulate matter separation device 2 using the particulate matter generating device 1. However, it is not limited to this; air can also be directly introduced into the particulate matter separation device 2 for particulate matter separation.

[0077] Industrial availability

[0078] According to this application, a particulate matter separation device and a variable particle size generation system for supplying particulate matter with a specific particle size range can be provided.

Claims

1. A particulate matter separation device, characterized in that, The particulate matter separation device includes at least a first separator and a second separator, wherein the first separator can separate a first particle size that is different from the second separator can separate a second particle size. The particulate matter separation device includes a flow path for the particulate matter to flow through the first separator and / or the second separator. Multiple control valves are provided in the flow path. By controlling the opening and closing of the control valves, the first separator can be selected to separate particulate matter, or the second separator can be selected to separate particulate matter, or the particulate matter can be separated by sequentially entering the first separator and the second separator.

2. The particulate matter separation device according to claim 1, characterized in that, The first separator includes an inlet, a first outlet, and a second outlet. Within the first separator, particles larger than the first particle size flow towards the first outlet, and particles smaller than or equal to the first particle size flow towards the second outlet. The second separator includes an inlet, a first outlet, and a second outlet. In the second separator, particles larger than the second particle size flow to the first outlet, and particles smaller than or equal to the second particle size flow to the second outlet.

3. The particulate matter separation device according to claim 2, characterized in that, The first particle size is larger than the second particle size, and the second outlet of the first separator is connected to the inlet of the second separator. As control valves, a first control valve is provided upstream of the inlet of the first separator, a second control valve is provided downstream of the second outlet of the first separator, a third control valve is provided upstream of the inlet of the second separator and downstream of the second control valve, and a fourth control valve is provided downstream of the second outlet of the second separator.

4. The particulate matter separation device according to claim 3, characterized in that, The particulate matter separation device further includes a first branch flow path and a second branch flow path. The first branch flow path branches off from the upstream side of the first control valve and connects to the downstream side of the fourth control valve. The second branch flow path branches off from the flow path between the second control valve and the third control valve, and connects to the first branch flow path. As the control valve, in the first branch flow path, a fifth control valve is provided on the upstream side of the part where the second branch flow path branches out, and a sixth control valve is provided on the downstream side of the part where the second branch flow path branches out.

5. The particulate matter separation device according to claim 3, characterized in that, The first separator has a first flow path and a second flow path. The first flow path extends axially from the inlet and connects to a flow path leading to the second outlet. The second flow path branches off midway from the first flow path and connects to the first outlet. The second separator has a first flow path and a second flow path, the first flow path extending axially from the inlet and connecting to the flow path leading to the second outlet, and the second flow path branching off from the middle of the first flow path and connecting to the first outlet.

6. The particulate matter separation device according to claim 4, characterized in that, By opening the first control valve, the second control valve, and the sixth control valve, and closing the other control valves, particulate matter separation is selected to occur in the first separator. By opening the third, fourth, and fifth control valves and closing the other control valves, particulate matter separation is selected to occur in the second separator. By opening the first control valve, the second control valve, the third control valve, and the fourth control valve, and closing the other control valves, the first separator and the second separator are selected sequentially for particulate matter separation.

7. The particulate matter separation device according to any one of claims 1 to 4, characterized in that, The particulate matter separation device includes two or more separators, including the first separator and the second separator. The separators are connected in series, and at least one of the separators is selected to separate particulate matter by controlling the opening and closing of the control valve.

8. The particulate matter separation device according to any one of claims 1 to 4, characterized in that, The particulate matter separation device includes two or more separator groups formed by connecting separators, including the first separator and the second separator, in series. The separator group is connected in parallel with each other, and at least one of the separators is selected to separate particulate matter by controlling the opening and closing of the control valve.

9. The particulate matter separation device according to any one of claims 2 to 4, characterized in that, The particulate matter separation device further includes a collection device, wherein the first outlet and the second outlet of the first separator, and the first outlet and the second outlet of the second separator are respectively connected to the collection device.

10. The particulate matter separation device according to claim 9, characterized in that, The collection device includes at least a first collection chamber and a second collection chamber. The collection device also has a collection channel connecting the first collection chamber and the second collection chamber. The number of collection channels corresponds to the number of output flow paths of the particulate matter separation device. A collection pipe control valve is provided at both ends of each collection channel. By controlling the opening and closing of the collection pipe control valve, particulate matter can be selectively collected into the first collection chamber or the second collection chamber.

11. A variable particle size particulate matter generation system, characterized in that, The variable particle size particulate matter generation system includes a particulate matter generation device and a particulate matter separation device according to any one of claims 1 to 10.

12. The variable particle size particulate matter generation system according to claim 11, characterized in that, The particulate matter generating device includes a sample storage cylinder, a feeding mechanism, and a diluent. The feeding mechanism delivers the sample from the sample storage cylinder to the diluent, which is used to dilute the concentration of the sample.

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