Experimental device for detecting dust fall efficiency in different areas of fog field

Abstract

The application provides an experimental device for detecting dust fall efficiency of different areas of a fog field, comprising: an experimental box body having a dust cavity; a dust generating device, the dust generating device comprising a pressure fan and a dust hopper, the pressure fan being used for blowing dust in the dust hopper into the dust cavity to generate a dust fog field; a spray dust fall device, the spray dust fall device spraying liquid to the dust fog field to realize dust fall; dust samplers, a plurality of dust samplers being used for collecting dust at different positions respectively; a disturbance prevention device, the disturbance prevention device comprising a net-shaped support and a plurality of partition units, the net-shaped support being provided with a plurality of ventilation openings, and the partition units being used for opening and closing the corresponding ventilation openings; wherein, in an area sprayed by the spray dust fall device, the partition units are opened, and in an area outside the area sprayed by the spray dust fall device, the partition units are closed. Through the scheme, the dust fog field is simulated and sampled, and fluid disturbance in the dust fog field is prevented.

Description

Technical Field

[0001] This invention relates to the field of spray dust suppression, and more specifically, to an experimental apparatus for detecting the dust suppression efficiency in different areas of a fog field. Background Technology

[0002] Coal mining generates a large amount of dust. Actual measurements show that, without any dust control measures, the dust concentration at the face of a fully mechanized tunneling face is 1200–1500 mg / m³. 3 Some samples reached as high as 3000 mg / m² 3 Around 2500–3000 mg / m³ in some areas of the coal mining face. 3 Furthermore, respirable dust accounts for approximately 40% of all dust. High concentrations of dust can not only cause pneumoconiosis but also lead to dust explosions in mines, seriously affecting the safe and efficient mining operations.

[0003] Spray dust suppression is the most common dust control method in mines. It utilizes mist droplets generated by a spray system, which rapidly collide with and agglomerate airborne dust, effectively reducing dust concentration. Factors such as airflow disturbance, spray pressure, droplet size, and dust particle size all affect dust suppression efficiency, causing variations in efficiency across different areas of the mist field. The effectiveness of dust suppression in different areas directly impacts the design of the spray system; using the optimal mist field section can significantly improve dust suppression efficiency. Therefore, testing the dust suppression efficiency in different areas of a mist field provides important theoretical guidance for the design of nozzle positions and layouts. Currently, there is no experimental device for simulating mist fields and sampling dust from different areas. Therefore, there is an urgent need for an experimental device capable of collecting dust samples from different areas of a mist field. Simulating dust mist fields in a closed space can lead to fluid disturbances, causing dust mixing between areas and affecting the sampling results of the simulation experiment. Therefore, it is necessary to implement a fluid disturbance prevention design for the simulated mist field. Summary of the Invention

[0004] This invention provides an experimental device for detecting the dust reduction efficiency in different areas of a fog field, in order to simulate and sample dust fog fields and prevent fluid disturbance within the dust fog field.

[0005] To achieve the above objectives, the present invention provides an experimental apparatus for detecting the dust suppression efficiency of different areas of a fog field, comprising: an experimental chamber having a dust chamber; a dust generating device including a compressor and a dust hopper, the compressor being used to blow dust from the dust hopper into the dust chamber to create a dust fog field; a spray dust suppression device spraying liquid onto the dust fog field to achieve dust suppression; multiple dust samplers installed at different positions in the dust chamber to collect dust from different locations; and an anti-disturbance device including a mesh support and multiple partition units, the mesh support being installed inside the dust chamber, the mesh support having multiple vents distributed on it, and the multiple partition units being correspondingly arranged at the multiple vents, the partition units being used to open and close the corresponding vents; wherein, within the area of ​​the anti-disturbance device being sprayed by the spray dust suppression device, the partition units are open, and outside the area of ​​the anti-disturbance device being sprayed by the spray dust suppression device, the partition units are closed.

[0006] Furthermore, there are multiple anti-disturbance devices, which are spaced apart along the direction of the spraying liquid of the dust suppression device to divide the dust chamber into at least three detection chambers, each of which contains a dust sampler.

[0007] Furthermore, in each detection chamber, at least two dust samplers are provided. One dust sampler is located at the end of the detection chamber closer to the air compressor, and the other dust sampler is located at the end of the detection chamber away from the air compressor. The two dust samplers are located on both sides of the area sprayed by the spray dust suppression device in the detection chamber.

[0008] Furthermore, the experimental device for detecting the dust suppression efficiency in different areas of the fog field also includes slide rails. The slide rails are installed on two sides of the experimental chamber along the direction of the sprayed liquid from the spray dust suppression device. The anti-disturbance device and the two slide rails are slidably engaged to adjust the position of the anti-disturbance device.

[0009] Furthermore, the mesh support includes multiple circular skeletons of different sizes and multiple radial rods. The multiple circular skeletons are distributed in a concentric circle pattern, and the multiple radial rods are distributed along the circumference of the circular skeletons. Each radial rod is connected to at least two circular skeletons to form multiple ventilation openings.

[0010] Furthermore, the partition unit has a connecting end and a free end. The connecting end is rotatably connected by a rotating shaft and a mesh support. Multiple partition magnets are provided on the mesh support, and each partition magnet corresponds to the free end of a partition unit. When the partition magnet and the free end are attracted to each other, the vent is closed. When the impact force of the liquid sprayed by the dust suppression device on the partition unit is greater than the attraction force of the partition magnet, the vent is opened.

[0011] Furthermore, the anti-disturbance device also includes an anti-collision structure, which is vertically installed on the side of the mesh support away from the spray dust suppression device. The anti-collision structure is used to limit the opening position of the partition unit.

[0012] Furthermore, the anti-collision structure includes anti-collision magnets and anti-collision posts. The anti-collision posts are connected to and perpendicular to the mesh support. The anti-collision magnets are installed on the anti-collision posts and attract and fix the partition units.

[0013] Furthermore, the experimental device for detecting the dust reduction efficiency in different areas of the fog field also includes an exhaust fan, which is connected to the side of the dust chamber away from the compressor. The exhaust fan extracts the fluid from the dust chamber.

[0014] Furthermore, the experimental setup for testing the dust reduction efficiency in different areas of the fog field also includes a dust removal device and a defogging device. The dust removal device sprays liquid onto the fluid extracted by the exhaust fan, and the outlets of the defogging device and the dust removal device are connected. The defogging device is used to reduce the water vapor content of the fluid discharged from the dust removal device.

[0015] Furthermore, the dust generating device also includes a regulating valve connected to the dust hopper to regulate the amount of dust output from the dust hopper, the wind speed of the blower is adjustable, and the spray volume or spray pressure of the spray dust suppression device is adjustable.

[0016] The present invention provides an experimental device for detecting the dust suppression efficiency of different areas of a fog field, comprising: an experimental chamber having a dust chamber; a dust generating device including a compressor and a dust hopper, the compressor blowing dust from the dust hopper into the dust chamber to create a dust fog field; a spray dust suppression device spraying liquid onto the dust fog field to achieve dust suppression; multiple dust samplers installed at different positions in the dust chamber to collect dust from different locations; and an anti-disturbance device including a mesh support and multiple partition units, the mesh support being installed inside the dust chamber with multiple vents distributed on it, and multiple partition units corresponding to the vents, the partition units being used to open and close the corresponding vents; wherein, within the area of ​​the anti-disturbance device being sprayed by the spray dust suppression device, the partition units are open, and outside the area of ​​the anti-disturbance device being sprayed by the spray dust suppression device, the partition units are closed. This design utilizes a dust chamber within the experimental chamber to create an experimental space for a dust mist field. A blower pumps dust from the dust hopper into the dust chamber, generating a dust mist field. A spray dust suppression device sprays liquid into the dust mist field, adsorbing dust and achieving dust suppression. Multiple dust samplers are installed at different locations within the dust chamber to collect and sample dust from various locations. The mesh support has multiple ventilation openings. Within the area where the anti-disturbance device is sprayed by the dust suppression device, the baffle unit opens, creating a channel for the mist to pass through. Outside this area, the baffle unit closes, blocking dust movement and preventing disturbance. This design enables the collection and sampling of dust from different locations. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of the experimental apparatus for detecting dust reduction efficiency in different areas of a fog field, provided by an embodiment of the present invention, is shown.

[0019] Figure 2 It shows Figure 1 A schematic diagram of the anti-disturbance device in the diagram;

[0020] Figure 3 It shows Figure 1 A partial structural diagram of the anti-disturbance device in the diagram;

[0021] Figure 4 It shows Figure 3 A schematic diagram of the partition unit in the middle;

[0022] Figure 5 It shows Figure 3 Side view of the partition unit in the open state;

[0023] Figure 6 A schematic diagram of the anti-collision structure is shown.

[0024] The above figures include the following reference numerals:

[0025] 10. Experimental chamber; 11. Dust chamber; 111. Detection chamber; 12. Chamber door;

[0026] 20. Dust generating device; 21. Air compressor; 22. Dust hopper; 23. Control valve;

[0027] 30. Spray dust suppression device;

[0028] 40. Dust sampler;

[0029] 50. Anti-disturbance device; 51. Mesh support; 511. Ventilation opening; 512. Circular frame; 513. Radial rod; 521. Partition unit; 522. Rotating shaft; 523. Partition magnet; 53. Anti-collision structure; 531. Anti-collision magnet; 532. Anti-collision post;

[0030] 60. Slide rail; 61. Fixing hole;

[0031] 71. Exhaust fan; 72. Dust removal device; 73. Demisting device; 74. Outlet; 75. Liquid tank; 76. Booster pump; 77. Switch valve; 78. Water supply pipe. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] like Figures 1 to 6As shown, an embodiment of the present invention provides an experimental apparatus for detecting the dust suppression efficiency of different areas of a fog field, comprising: an experimental chamber 10 having a dust chamber 11; a dust generating device 20, which includes a compressor 21 and a dust hopper 22, the compressor 21 being used to blow dust from the dust hopper 22 into the dust chamber 11 to create a dust fog field; a spray dust suppression device 30, which sprays liquid onto the dust fog field to achieve dust suppression; and multiple dust samplers 40, which are installed at different positions in the dust chamber 11 to sample dust at different positions. Dust is collected separately; an anti-disturbance device 50 is included, comprising a mesh support 51 and multiple partition units 521. The mesh support 51 is installed inside the dust chamber 11, and multiple vents 511 are distributed on the mesh support 51. Multiple partition units 521 are correspondingly arranged at the multiple vents 511, and the partition units 521 are used to open and close the corresponding vents 511; wherein, in the area of ​​the anti-disturbance device 50 sprayed by the spray dust suppression device 30, the partition units 521 are open, and outside the area of ​​the anti-disturbance device 50 sprayed by the spray dust suppression device 30, the partition units 521 are closed.

[0034] In this design, the dust chamber 11 of the experimental chamber 10 provides an experimental space for the dust mist field. The blower 21 blows dust from the dust hopper 22 into the dust chamber 11 to create a dust mist field within it. The spray dust suppression device 30 sprays liquid into the dust mist field, adsorbing dust to achieve dust suppression. Multiple dust samplers 40 are installed at different locations within the dust chamber 11 to collect and sample dust from different locations. Multiple ventilation openings 511 are distributed on the mesh support 51. Within the area where the anti-disturbance device 50 is sprayed by the spray dust suppression device 30, the partition unit 521 opens, forming a channel through which the mist can pass, flowing through the ventilation openings 511. Outside the area where the anti-disturbance device 50 is sprayed by the spray dust suppression device 30, the partition unit 521 closes, blocking dust movement and preventing dust disturbance. This design enables the collection and sampling of dust from different locations.

[0035] The experimental chamber 10 has a door 12, allowing personnel to enter and exit the chamber to adjust the equipment inside. The experimental chamber 10 is made of plexiglass with a thickness of 4mm–8mm, and its length and width are both 2–4m. Transition sections are provided at both ends of the experimental chamber 10, connecting it to the blower 21 and the dust removal device 72 respectively. The blower 21 has a compressed air volume of 100–600 m³ / h. 3 The dust emission mass flow rate is 1-20 g / s, which can simulate the dust concentration and wind speed during coal mining.

[0036] like Figure 1As shown, there are multiple anti-disturbance devices 50, which are spaced apart along the direction of the spraying liquid of the dust suppression device 30 to divide the dust chamber 11 into at least three detection chambers 111, and each detection chamber 111 is equipped with a dust sampler 40.

[0037] Multiple anti-disturbance devices 50 are spaced apart along the direction of the sprayed liquid of the dust suppression device 30, dividing the dust chamber 11 into multiple detection chambers 111. The dust between the multiple detection chambers 111 is separated by the anti-disturbance devices 50, so that no disturbance occurs, making the collection and sampling results more accurate.

[0038] like Figure 1 As shown, at least two dust samplers 40 are provided in each detection chamber 111. One dust sampler 40 is located at the end of the detection chamber 111 near the blower 21, and the other dust sampler 40 is located at the end of the detection chamber 111 away from the blower 21. The two dust samplers 40 are located on both sides of the area sprayed by the spray dust suppression device 30 in the detection chamber 111.

[0039] With this setup, two dust samplers 40 are respectively positioned on either side of the spray area within the detection chamber 111 of the spray dust suppression device 30. The two dust samplers 40 collect dust samples before and after the spray from the spray dust suppression device 30. Technicians can process, calculate, and compare the collected sampling results to determine the dust suppression efficiency of different spray sections. The arrangement of the dust samplers needs to be adjusted according to the movement of the anti-disturbance device 50.

[0040] like Figure 1 As shown, the experimental device for detecting the dust suppression efficiency in different areas of the fog field also includes slide rails 60. The slide rails 60 are installed on two sides of the experimental chamber 10 along the direction of the spraying liquid of the spray dust suppression device 30. The anti-disturbance device 50 and the two slide rails 60 are slidably engaged to adjust the position of the anti-disturbance device 50.

[0041] With this configuration, the anti-disturbance device 50 can slide on the slide rail 60, and the volume of the detection chamber 111 changes as the anti-disturbance device 50 moves. In actual operation, operators can change the position of the anti-disturbance device 50 on the slide rail 60 to conduct experiments and obtain the spray section with the highest dust suppression efficiency. The slide rail 60 has multiple fixing holes 61, which can be used to fix the position of the anti-disturbance device 50.

[0042] like Figure 2 As shown, the mesh support 51 includes multiple circular skeletons 512 of different sizes and multiple radial rods 513. The multiple circular skeletons 512 are distributed in a concentric circle shape, and the multiple radial rods 513 are distributed along the circumference of the circular skeletons 512. Each radial rod 513 is connected to at least two circular skeletons 512 to form multiple vents 511.

[0043] This configuration allows the mist to pass through the ventilation openings on the mesh support 51. The circular frame 512 and radial rods 513 are made of very thin material to avoid obstructing the mist flow that comes into contact with the spray dust suppression device 30. In other embodiments, the mesh support 51 can also be a mesh structure formed by the cross-connection of multiple transverse frames and multiple longitudinal frames.

[0044] like Figure 3 As shown, the partition unit 521 has a connecting end and a free end. The connecting end is rotatably connected to the mesh support 51 via a rotating shaft 522. Multiple partition magnets 523 are provided on the mesh support 51, and each partition magnet 523 corresponds to the free end of a partition unit 521. When the partition magnet 523 and the free end are attracted together, the vent 511 is closed. When the impact force of the liquid sprayed by the spray dust suppression device 30 on the partition unit 521 is greater than the attraction force of the partition magnet 523, the vent 511 is opened.

[0045] In this configuration, the connecting end of the partition unit 521 is rotatably connected to the mesh support 51 via a rotating shaft 522, allowing the partition unit 521 to rotate around the mesh support 51. A partition magnet 523 is mounted on the mesh support 51 and engages with the free end of the partition unit 521. The attraction force of the partition magnet 523 causes the partition unit 521 to adhere to the magnet, closing the vent 511. When the spray dust suppression device 30 is activated, the impact force of the sprayed liquid exceeds the attraction force of the partition magnet 523, causing the partition unit 521 to rotate around the rotating shaft 522, opening the vent 511.

[0046] like Figure 6 As shown, the anti-disturbance device 50 also includes an anti-collision structure 53, which is vertically arranged on the side of the mesh support 51 away from the spray dust suppression device 30. The anti-collision structure 53 is used to limit the opening position of the partition unit 521.

[0047] The anti-collision structure 53 limits the partition unit 521, ensuring that multiple partition units 521 will not overturn and cause collisions. The rotation of the partition unit 521 is relatively stable and will not shake. The mist flow channel is also relatively stable.

[0048] like Figure 6 As shown, the anti-collision structure 53 includes an anti-collision magnet 531 and an anti-collision post 532. The anti-collision post 532 is connected to and perpendicular to the mesh support 51. The anti-collision magnet 531 is installed on the anti-collision post 532 and the anti-collision magnet 531 attracts and fixes the partition unit 521.

[0049] With this configuration, the anti-collision post 532 acts as a stop for the partition unit 521, preventing the partition unit 521 from overturning. The anti-collision magnet 531 attracts and fixes the partition unit 521, so that the partition unit 521 will not shake, thus ensuring the stability of the partition unit 521.

[0050] like Figure 1 As shown, the experimental device for detecting the dust reduction efficiency in different areas of the fog field also includes a blower 71. The blower 71 is connected to the side of the dust chamber 11 away from the compressor 21, and the blower 71 extracts the fluid in the dust chamber 11.

[0051] The exhaust fan 71 extracts the fluid from the dust chamber 11, so that the fluid that has passed through the spray dust suppression in each detection chamber 111 passes through the dust sampler 40 near the side of the exhaust fan, so that the two dust samplers 40 in each detection chamber 111 collect the dust before and after the spray dust suppression.

[0052] like Figure 1 As shown, the experimental apparatus for detecting the dust reduction efficiency in different areas of the fog field also includes a dust removal device 72 and a defogging device 73. The dust removal device 72 sprays liquid onto the fluid extracted by the exhaust fan 71. The outlets of the defogging device 73 and the dust removal device 72 are connected. The defogging device 73 is used to reduce the water vapor content of the fluid discharged by the dust removal device 72.

[0053] The dust removal device 72 performs dust suppression treatment on the fluid extracted by the exhaust fan 71, and the demisting device 73 removes water vapor from the fluid discharged by the dust removal device 72. The experimental device for testing the dust suppression efficiency in different areas of the fog field also includes an outlet 74. The fluid that has undergone dust suppression and demisting does not pollute the air and can be directly discharged from the outlet 74.

[0054] The experimental setup for testing the dust suppression efficiency in different areas of a fog field also includes a liquid tank 75, a booster pump 76, a switch valve 77, and a water supply pipe 78 connected in sequence. The water supply pipe 78 supplies liquid to the spray dust suppression device 30 and the dust removal device 72. The booster pump 76 can supply water at different pressures, simulating spray pressures of 1–8 MPa.

[0055] like Figure 1 As shown, the dust generating device 20 also includes a regulating valve 23, which is connected to the dust hopper 22 to regulate the amount of dust output from the dust hopper 22. The air speed of the blower 21 is adjustable, and the spray volume or spray pressure of the spray dust suppression device 30 is adjustable. The air volume of the exhaust fan 71 is 100–500 m³ / h. 3 / min, to simulate different wind speed environments downhole.

[0056] The experimental setup used in this experiment to test the dust reduction efficiency in different areas of a fog field includes the following steps:

[0057] (1) According to the spray section to be measured, the technician enters the test chamber 10, moves the anti-disturbance device 50 on the slide rail 60, and fixes it to the fixing hole 61 of the slide rail 60 with fixing bolts. Turn on the booster pump 76 to adjust the pressure and flow rate. The pressurized water is sent to the spray dust suppression device 30. The spray dust suppression device 30 sprays out a mist. The mist impacts the baffle unit 521. At this time, the impact force of the mist is greater than the magnetic force, causing the baffle unit 521 to open the mist channel around the rotating shaft 522. If some do not open smoothly, they can be manually rotated.

[0058] At the same time, water flows through water supply pipe 78 to dust removal device 72, realizing the atomization and cleaning function of exhaust air.

[0059] (2) The coal lumps are ground by a grinder to produce dust particles with a particle size distribution similar to that of the work site. The ground dust is dried in a drying box and placed into the dust hopper 22. The air compressor 21 and the exhaust fan 71 are turned on in sequence, and their power is adjusted to meet the requirements of different wind speeds in the simulated environment. Then, the regulating valve 23 is turned on to control the dust flow rate and simulate dust environments with different concentrations.

[0060] (3) After the dust concentration has stabilized, generally after 3-5 minutes, the dust sampler 40 is turned on to collect dust before and after spraying inside the experimental chamber 10. At this time, the mist from the nozzles inside the experimental chamber 10 will collide with and capture the dust. When the dust that has not settled inside the experimental chamber 10 passes through the dust removal device 72, it is captured and settled by the spray liquid inside the dust removal device 72. The large amount of water vapor generated in the experiment achieves the collision and aggregation of droplets through the demisting device 73 under inertial collision, so as to reduce the water vapor content in the exhaust air.

[0061] (4) After the dust sampler 40 samples for 10-15 minutes, the sampled filter membrane is dried and weighed. The spray dust reduction efficiency of different areas of fog field is calculated, and the optimal dust reduction atomization section is obtained by comparing the dust reduction efficiency.

[0062] (5) After the experimental sampling is completed, first close the regulating valve 23 to stop dust generation. After 2 to 3 minutes, the dust will be completely diluted. Then, turn off the booster pump 76, exhaust fan 71, and air compressor 21 in sequence, manually reset the partition unit 521, and return to step (1) to carry out the next set of experiments.

[0063] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0064] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0065] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0066] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0067] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0068] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

Claims

1. An experimental apparatus for detecting dust reduction efficiency in different areas of a fog field, characterized in that, include: The experimental chamber (10) has a dust chamber (11); A dust generating device (20) includes a blower (21) and a dust hopper (22). The blower (21) is used to blow the dust in the dust hopper (22) into the dust chamber (11) to create a dust mist field. A spray dust suppression device (30) sprays liquid onto the dust mist field to achieve dust suppression; Dust sampler (40), there are multiple dust samplers (40), and multiple dust samplers (40) are installed at different positions in the dust chamber (11) to collect dust from different positions respectively; An anti-disturbance device (50) includes a mesh support (51) and multiple partition units (521). The mesh support (51) is installed inside the dust chamber (11). Multiple vents (511) are distributed on the mesh support (51). Multiple partition units (521) are arranged one-to-one at the multiple vents (511). The partition units (521) are used to open and close the corresponding vents (511). In the area where the anti-disturbance device (50) is sprayed by the spray dust suppression device (30), the partition units (521) are open. Outside the area where the anti-disturbance device (50) is sprayed by the spray dust suppression device (30), the partition units (521) are closed. There are multiple anti-disturbance devices (50), and the multiple anti-disturbance devices (50) are arranged at intervals along the direction of the spraying liquid of the spray dust suppression device (30) to divide the dust chamber (11) into at least three detection chambers (111), and each detection chamber (111) is equipped with a dust sampler (40).

2. The experimental apparatus for detecting dust reduction efficiency in different areas of a fog field according to claim 1, characterized in that, In each of the detection chambers (111), at least two dust samplers (40) are provided. One dust sampler (40) is located at one end of the detection chamber (111) near the blower (21), and the other dust sampler (40) is located at one end of the detection chamber (111) away from the blower (21). The two dust samplers (40) are respectively located on both sides of the area sprayed by the spray dust suppression device (30) in the detection chamber (111).

3. The experimental apparatus for detecting dust reduction efficiency in different areas of a fog field according to claim 1, characterized in that, The experimental device for detecting the dust reduction efficiency of different areas of the fog field also includes slide rails (60). The slide rails (60) are installed on two sides of the experimental chamber (10) along the direction of the spraying liquid of the spray dust reduction device (30). The anti-disturbance device (50) and the two slide rails (60) are slidably engaged to adjust the position of the anti-disturbance device (50).

4. The experimental apparatus for detecting dust reduction efficiency in different areas of a fog field according to claim 1, characterized in that, The mesh support (51) includes multiple circular skeletons (512) of different sizes and multiple radial rods (513). The multiple circular skeletons (512) are distributed in a concentric circle pattern, and the multiple radial rods (513) are distributed along the circumference of the circular skeletons (512). Each radial rod (513) is connected to at least two of the circular skeletons (512) to form multiple ventilation openings (511).

5. The experimental apparatus for detecting dust reduction efficiency in different areas of a fog field according to claim 1, characterized in that, The partition unit (521) has a connecting end and a free end. The connecting end is rotatably connected to the mesh support (51) via a rotating shaft (522). The mesh support (51) is provided with a plurality of partition magnets (523), each of which corresponds to a free end of a partition unit (521). When the partition magnet (523) and the free end are attracted together, the vent (511) is closed. When the impact force of the liquid sprayed by the dust suppression device (30) on the partition unit (521) is greater than the attraction force of the partition magnet (523), the vent (511) is opened.

6. The experimental apparatus for detecting dust reduction efficiency in different areas of a fog field according to claim 1, characterized in that, The anti-disturbance device (50) also includes an anti-collision structure (53), which is vertically arranged on the side of the mesh support (51) away from the spray dust suppression device (30). The anti-collision structure (53) is used to limit the opening position of the partition unit (521).

7. The experimental apparatus for detecting dust reduction efficiency in different areas of a fog field according to claim 6, characterized in that, The anti-collision structure (53) includes an anti-collision magnet (531) and an anti-collision post (532). The anti-collision post (532) is connected to and perpendicular to the mesh support (51). The anti-collision magnet (531) is installed on the anti-collision post (532) and the anti-collision magnet (531) attracts and fixes the partition unit (521).

8. The experimental apparatus for detecting dust reduction efficiency in different areas of a fog field according to claim 1, characterized in that, The experimental device for detecting the dust reduction efficiency in different areas of the fog field also includes a blower (71), which is connected to the side of the dust chamber (11) away from the compressor (21), and the blower (71) extracts the fluid in the dust chamber (11).

9. The experimental apparatus for detecting dust reduction efficiency in different areas of a fog field according to claim 8, characterized in that, The experimental apparatus for detecting the dust reduction efficiency in different areas of the fog field also includes a dust removal device (72) and a defogging device (73). The dust removal device (72) sprays liquid onto the fluid extracted by the exhaust fan (71). The outlets of the defogging device (73) and the dust removal device (72) are connected. The defogging device (73) is used to reduce the water vapor content of the fluid discharged by the dust removal device (72).

10. The experimental apparatus for detecting dust reduction efficiency in different areas of a fog field according to claim 1, characterized in that, The dust generating device (20) also includes a regulating valve (23), which is connected to the dust hopper (22) to regulate the amount of dust output by the dust hopper (22). The wind speed of the blower (21) is adjustable, and the spray volume or spray pressure of the spray dust suppression device (30) is adjustable.

Images