Dust removal system, method, aggregate conveying system and mixing plant

Abstract

The application provides a dust removal system, a method, an aggregate conveying system and a mixing station. The dust removal system comprises a spraying device, a valve and a foam generating device. The spraying device is in a plurality of numbers, and each spraying device is arranged in each transfer area of the aggregate conveying system and is used for spraying dust removal foam into each transfer area. The transfer area comprises a discharge port area of the aggregate conveying system and / or a transfer point area of a conveying line of the aggregate conveying system. The foam generating device is communicated with each spraying device through the valve. The dust removal system can isolate the aggregate in the transfer area, adhere to the scattered dust, reduce the possibility of dust scattering in the whole process of the aggregate conveying system, reduce dust pollution, and ensure the physical health and work efficiency of the staff.

Description

Technical Field

[0001] This invention relates to the field of dust removal technology, and more specifically, to a dust removal system, method, aggregate conveying system, and mixing plant. Background Technology

[0002] In situations requiring batching and conveying, such as in the conveying system of a mixing plant, an open working method is generally adopted, meaning that raw materials such as aggregates are exposed to the working environment during the batching and conveying process.

[0003] When raw materials such as aggregates are being batched and transported, the dust mixed with these materials can easily escape into the working environment, resulting in serious dust pollution and affecting the health and work efficiency of the workers. Summary of the Invention

[0004] The present invention aims to improve the problem of dust pollution in the batching and conveying process to a certain extent.

[0005] To at least partially solve or improve the above-mentioned problems, the first aspect of the present invention provides a dust removal system, including a spraying device, a valve, and a foam generating device;

[0006] The number of spraying devices is multiple, and the multiple spraying devices are respectively used to be set in each transfer area of ​​the aggregate conveying system, and are respectively used to spray dust removal foam into each transfer area. The transfer area includes the discharge port area of ​​the aggregate conveying system and / or the transfer point area of ​​the conveying line of the aggregate conveying system.

[0007] The foam generating device is connected to each of the spraying devices via the valve.

[0008] Optionally, it also includes:

[0009] A detection device, which is disposed at at least one of the transition areas, is used to detect dust concentration;

[0010] The controller is communicatively connected to the detection device, the foam generating device, and the valve.

[0011] Optionally, it also includes a speed sensor, which is installed at the conveyor line of the aggregate conveying system to obtain the speed of the conveyor line of the aggregate conveying system, and the speed sensor is communicatively connected to the controller;

[0012] Alternatively, the controller may also be configured to communicate with the driver of the conveyor line of the aggregate conveying system.

[0013] Optionally, there are multiple valves, and the foam generating device is connected to each of the spraying devices via each of the valves;

[0014] The number of the detection devices is multiple, and the multiple detection devices are respectively used to be installed at each of the transition areas;

[0015] The number of speed sensors is multiple, and each speed sensor is respectively used to be installed at each of the conveyor lines to detect the speed of the corresponding conveyor line.

[0016] Optionally, the spraying device includes a nozzle and a first adjustment mechanism. The nozzle is connected to the foam generating device via the valve, and the first adjustment mechanism is connected to the nozzle. The first adjustment mechanism is used to adjust the spatial orientation of the nozzle.

[0017] Optionally, the first adjustment mechanism includes a first connecting seat and a mounting seat. The first connecting seat is disposed at the corresponding transition area, and the mounting seat is connected to the first connecting seat. The mounting seat is used to install the nozzle. The mounting seat and the first connecting seat are pivotally connected via a first pivot axis, which extends horizontally or vertically.

[0018] Optionally, the first adjustment mechanism further includes a second connecting seat, which is located above or below the first connecting seat, and the first connecting seat and the second connecting seat are connected by a second pivot axis; the first pivot axis extends in a horizontal direction and the second pivot axis extends in a vertical direction, or the first pivot axis extends in a vertical direction and the second pivot axis extends in a horizontal direction.

[0019] Optionally, the first adjustment mechanism further includes a locking connection structure, wherein the locking connection structure is provided between the mounting base and the first connecting base and the relative position is locked by the locking connection structure, and / or, the locking connection structure is provided between the first connecting base and the second connecting base and the relative position is locked by the locking connection structure;

[0020] or,

[0021] The first adjustment mechanism includes a first drive mechanism, wherein the first drive mechanism is disposed between the mounting base and the first connecting base and the relative position adjustment is achieved through the first drive mechanism, and / or, the first drive mechanism is disposed between the first connecting base and the second connecting base and the relative position adjustment is achieved through the first drive mechanism.

[0022] Optionally, the spraying device further includes a fourth connecting seat and a second driving mechanism, wherein the first adjusting mechanism is movably disposed on the fourth connecting seat, and the second driving mechanism is disposed between the first adjusting mechanism and the fourth connecting seat and is used to drive the first adjusting mechanism to move along a first path, wherein the first path is at least partially disposed around the transition area.

[0023] Compared with existing related technologies, the present invention has the following advantages:

[0024] This dust removal system, by installing spray devices at each transfer area of ​​the aggregate conveying system, sprays dust-removing foam when the valves are opened. The foam isolates the aggregate in the transfer area and adheres to any loose dust. The adhered dust settles onto the aggregate flow on the conveyor line due to gravity, effectively preventing dust generation. Furthermore, the surface of the aggregate flow moving outside the transfer area on the conveyor line is covered with a layer of dust-removing foam (possibly in hydrated form), which to some extent prevents dust from escaping due to vibration during conveying. Thus, the system reduces the possibility of dust escape throughout the entire aggregate conveying process, mitigating dust pollution and ensuring the health and efficiency of workers. Moreover, in work environments such as mixing plants requiring multiple transfers, this system avoids the use of water spraying for dust removal, preventing water dripping during conveying, which would waste resources and create safety hazards.

[0025] A second aspect of the present invention provides a dust removal method, applied to the dust removal system described above, comprising:

[0026] Real-time dust concentration information at each transition area;

[0027] When the dust concentration at the target transfer area is higher than a preset range, the valve connected to the spray device at the target transfer area is opened; wherein, the target transfer area is any one of the transfer areas.

[0028] Optionally, after opening the valve connected to the spray device at the target transition area, the dust removal method further includes:

[0029] The valve opening information and the conveyor speed information at the target transfer area are obtained at a preset sampling period.

[0030] The valve opening is adjusted in real time based on the valve opening information, the conveyor speed information, and the preset maintenance typical amount of dust removal foam corresponding to the target transfer area.

[0031] Optionally, adjusting the valve opening in real time based on the valve opening information, the conveyor speed information, and the preset maintenance typical amount of dust removal foam corresponding to the target transfer area includes:

[0032] The real-time dust removal foam quantity at the target transfer area is generated based on the valve opening information and the conveyor speed information.

[0033] The valve opening is adjusted in real time based on the real-time dust removal foam volume and the preset maintenance typical volume; or, the valve opening is adjusted in real time based on the real-time dust removal foam volume, the preset maintenance typical volume, and the speed information of the conveyor line.

[0034] Optionally, the preset maintenance typical value is determined based on historical data, or...

[0035] The preset maintenance typical amount is determined based on the drop height and drop range of the aggregate at the target transition area:

[0036] When the target transfer area is any discharge port area of ​​the aggregate conveying system, the preset maintenance typical amount is determined based on the drop height of the aggregate at the discharge port area and the cross-sectional area at the lower end of the discharge port.

[0037] When the target transfer area is any transfer point area of ​​the aggregate conveying system, the preset maintenance typical amount is determined based on the aggregate drop height, aggregate drop width and the speed at which the aggregate leaves the conveying line at the transfer point area.

[0038] Optionally, generating the real-time dust removal foam quantity at the target transfer area based on the valve opening information and the conveyor speed information includes:

[0039] The real-time dust removal foam quantity at the target transition area is generated according to equations (1) to (3):

[0040] V(k)=Kp{S(k)+(1 / T I )∑ k i＝0 S i T+T D [S(k)-S(k-1)] / T]}+V M Equation (1)

[0041] △V(k)=V(k)-V(k-1) Equation (2)

[0042] Based on equations (1) and (2), equation (3) is obtained as follows:

[0043] V(k)=V(k-1)+Kp{S(k)-S(k-1)+(T / T I)S(k)+(T D / T)[S(k)-2S(k-1)+S(k-2)]+V M Equation (3)

[0044] Among them, V M Let T be the initial foam volume at the target transfer area, T be the sampling period, and S(k) represent the foam accumulation rate of the target transfer area at the k-th sampling. For any sampling, the foam accumulation rate S is: S = Sp - Sq, where Sp = k1P, Sp is the foam generation rate, P is the valve opening, Sq = k2Q, Sq is the foam liquefaction rate, and Q is the speed of the conveyor line corresponding to the target transfer area. Here, k1, k2, T, and K are the initial foam volumes at the target transfer area. P T I T D This is a constant term.

[0045] Optionally, before acquiring the dust concentration information at each of the transition areas in real time, the dust removal method further includes:

[0046] Obtain speed information for each conveyor line;

[0047] When the speed of any of the conveyor lines is greater than or equal to the preset speed, the foam generator is activated.

[0048] This dust removal method can promptly locate target transition areas where the dust concentration exceeds a preset range. By opening the valve connected to the corresponding spraying device, foam is sprayed from the corresponding spraying device, thereby reducing the dust concentration in the target transition area and preventing excessively high dust concentrations from affecting the health and work efficiency of the staff.

[0049] A third aspect of the present invention provides an aggregate conveying system, including the dust removal system described in any one of the first aspects.

[0050] A fourth aspect of the present invention provides a mixing plant, comprising the dust removal system described in any one of the first aspects, or the aggregate conveying system described in the third aspect.

[0051] The aggregate conveying system and the mixing plant possess all the beneficial effects of the dust removal system, which will not be described in detail here. Attached Figure Description

[0052] Figure 1 This is a schematic diagram of the dust removal system applied to the aggregate conveying system in an embodiment of the present invention;

[0053] Figure 2 for Figure 1 Another structural diagram of the medium aggregate conveying system;

[0054] Figure 3This is a schematic diagram of the spraying device in an embodiment of the present invention;

[0055] Figure 4 for Figure 3 Another structural schematic diagram of the central injection device;

[0056] Figure 5 This is a flowchart of a dust removal method in an embodiment of the present invention.

[0057] Explanation of reference numerals in the attached figures:

[0058] 1-Aggregate conveying system, 101-Batching device, 102-Discharge port, 103-First conveying line, 104-Second conveying line, 105-Third conveying line, 2-Spraying device, 211-First connecting seat, 2111-Chutter, 212-Mounting seat, 2121-Through hole, 213-First pivot shaft, 214-Second connecting seat, 215-Third connecting seat, 216-Second pivot shaft, 217-Sprayer head, 3-Valve, 4-Detection device, 5-Foam generating device, 51-Water tank, 52-Foaming agent tank, 53-Mixing and pressurizing device. Detailed Implementation

[0059] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0060] In the attached figures, the Z-axis represents the vertical direction, i.e., the up-down position, with the positive direction of the Z-axis (where the arrow points) indicating up and the negative direction (opposite to the positive direction) indicating down. The Y-axis represents the front-back position, with the positive direction of the Y-axis (where the arrow points) indicating the front and the negative direction (opposite to the positive direction) indicating the back. The X-axis represents the horizontal direction and is designated as the left-right position, with the positive direction of the X-axis (where the arrow points) indicating the right and the negative direction (opposite to the positive direction) indicating the left. It should be noted that the aforementioned representations of the Z, Y, and X axes are merely for the convenience of describing the invention and simplifying the description, and 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; therefore, they should not be construed as limitations on the invention.

[0061] It should be noted that the applicant's research found that there are ordered and disordered aggregate flows in the aggregate conveying system. Ordered flow refers to the aggregate particles in the entire flow having basically the same direction and speed during the conveying process (i.e., the motion state is basically the same, such as aggregate moving at a constant speed along the conveyor line); disordered flow refers to the aggregate particles in the flow having relative differences in direction and speed due to gravity or external forces during the movement of the aggregate (such as aggregate coming out of the discharge port 102); therefore, disordered flow is the main cause of dust generation.

[0062] like Figure 1 and Figure 2 As shown, this embodiment of the invention provides a dust removal system applied to an aggregate conveying system 1 to prevent dust from escaping during aggregate conveying. The dust removal system includes a spraying device 2, a valve 3, and a foam generating device 5.

[0063] The number of spraying devices 2 is multiple, and the multiple spraying devices 2 are respectively used to be set in each transfer area of ​​the aggregate conveying system 1, and are respectively used to spray dust removal foam into each transfer area. The transfer area includes the discharge port area of ​​the aggregate conveying system 1 and / or the transfer point area of ​​the conveying line of the aggregate conveying system 1.

[0064] The foam generating device 5 is connected to each of the spraying devices 2 via the valve 3.

[0065] It should be noted that the aggregate conveying system 1 includes multiple batching devices 101 similar to hoppers, a first conveying line 103 disposed below the batching devices 101 to receive aggregate flowing out of at least one batching device 101, and possibly other conveying lines for transferring aggregate. Figure 1 The first conveyor line 103 receives aggregate from the four batching devices 101 and conveys it forward (the direction pointed to by the positive Y-axis). The second conveyor line 104 is inclined relative to the horizontal plane. The first end (i.e., the rear end) of the second conveyor line 104 is located below the first conveyor line 103 and receives the aggregate conveyed by the first conveyor line 103. The second end (i.e., the front end) of the second conveyor line 104 is located above the second conveyor line 104. The aggregate conveyed by the second conveyor line 104 flows out from the second end and falls onto the third conveyor line 105. The third conveyor line 105 continues to transfer the aggregate to other locations, such as to the feed inlet of the mixer.

[0066] Unless otherwise specified or indicated, the term "conveyor line" as used in this specification can refer to any of the aforementioned conveyor lines, such as the first conveyor line 103. Those skilled in the art will understand the specific conveyor line indicated by it based on the context, and it will not be described in detail here.

[0067] The discharge port 102 is the discharge port of the batching device 101. The area through which the material discharged from the discharge port 102 falls into the corresponding conveyor line below can be understood as the discharge port area. For example, if the discharge direction of the discharge port 102 is the same as that directly below, then the discharge port area can be understood as the area directly below the discharge port 102. The situation of the transfer point area is similar and will not be described in detail here.

[0068] The foam generating device 5 includes a water tank 51 (or water inlet), a foaming agent tank 52, and a mixing and pressurizing device 53. The mixing and pressurizing device 53 is connected to the water tank 51 and the foaming agent tank 52 respectively. The mixing and pressurizing device 53 mixes water and foaming agent in proportion, pressurizes them, and sprays them out through the spraying device 2 to generate dust removal foam for dust removal.

[0069] Valve 3 is used to control the connection between foam generating device 5 and spraying device 2, so as to control whether spraying device 2 sprays or not. Valve 3 can be a manual valve or an electrically controlled valve.

[0070] Thus, this dust removal system, by installing spray devices 2 at each transfer area of ​​the aggregate conveying system 1, sprays dust-removing foam when the valve 3 is opened. The foam isolates the aggregate in the transfer area and adheres to any loose dust. The adhered dust settles onto the aggregate flow on the conveyor line due to gravity, effectively preventing dust generation. Furthermore, the upper surface of the aggregate flow moving outside the transfer area on the conveyor line is covered with a layer of dust-removing foam (possibly in hydrated form), which to some extent prevents dust from escaping from the aggregate flow due to vibration during conveying. Therefore, the possibility of dust escape is reduced throughout the entire process of the aggregate conveying system 1, mitigating dust pollution and ensuring the health and work efficiency of personnel. Moreover, in work environments such as mixing plants requiring multiple transfers, water spraying for dust removal is avoided, preventing water dripping during conveying, which would otherwise waste resources and pose safety hazards.

[0071] like Figure 1 The dust removal system also includes a detection device 4, which is installed at at least one of the transition areas and is used to detect dust concentration.

[0072] The detection device 4 is generally located outside the transfer area but close to it (generally in front of or to the side of the transfer area). In this case, the detection device 4 can be located outside the spray coverage area of ​​the spraying device 2 but close to the transfer area to avoid the dust removal foam sprayed by the spraying device 2 from adversely affecting the function of the detection device 4 and the accuracy of the detection.

[0073] For example, the detection device 4 includes a concentration detector, which may have a digital display function, so that the operator can determine whether to start the dust removal system based on the data displayed by the concentration detector. For example, determining the opening degree of valve 3 and the opening time.

[0074] Furthermore, the dust removal system also includes a controller, which is communicatively connected to the detection device 4, the foam generating device 5, and the valve 3.

[0075] Here, "communication connection" can refer to either a wired or wireless connection. Wireless connections include mobile communication connections (such as 2G, 3G, 4G, and 5G), Wi-Fi connections, Bluetooth connections, infrared connections, etc. The choice of communication connection method depends on the specific circumstances and is not a limitation.

[0076] In this way, the dust concentration can be determined and quantified based on the detection information of the detection device 4, and the controller can control each foam generating device 5 and the valve 3. For example, the action of the valve 3 (such as opening, closing and adjusting the opening degree) can be controlled based on the detection information (i.e. dust concentration) of the detection device 4, thereby achieving dust removal with a high degree of automation, controllability and reliability.

[0077] Optionally, the dust removal system further includes a speed sensor, which is installed at the conveyor line of the aggregate conveying system 1 to obtain the speed of the conveyor line of the aggregate conveying system 1, and the speed sensor is communicatively connected to the controller.

[0078] For example, a speed sensor can be connected to the frame at the conveyor line to detect the rotational speed of the passive rollers of the conveyor line, thereby calculating the speed of the conveyor line.

[0079] In this way, the speed sensor can detect whether the conveyor line is started and the conveying speed, providing a reliable data basis for subsequent operations. For example, it can be determined whether the foam generator 5 should be turned on by whether the conveyor line is started.

[0080] Unlike methods that use speed sensors, the controller is also used to communicate with the driver of the conveyor line in the aggregate conveying system 1. Thus, the speed of the conveyor line can also be obtained through the drive data from the driver.

[0081] Furthermore, in the above embodiments, there are multiple valves 3, and the foam generating device 5 is connected to each of the spraying devices 2 via each of the valves 3;

[0082] The number of detection devices 4 is multiple, and each detection device 4 is respectively installed at each of the transition areas. At this time, the controller is communicatively connected to each of the valves 3, each of the detection devices 4, and the foam generating device 5. At this time, the number of speed sensors can be multiple, and each speed sensor is respectively installed at each of the conveyor lines to detect the speed of the corresponding conveyor line. The controller is also communicatively connected to each of the speed sensors.

[0083] It should be noted that for a given transition area, there can be one or more corresponding detection devices 4, and correspondingly, there can be one or more corresponding spraying devices 2, which will not be described in detail here. Generally, the operation of the spraying device 2 corresponding to the transition area is adjusted according to the detection data (i.e., dust concentration) of the detection device 4 at the transition area to ensure that the dust concentration in the transition area is within a certain range.

[0084] In this way, the action of the corresponding valve 3 (such as opening, closing, and adjusting the opening degree) can be adjusted according to the dust concentration of each transfer area, thereby realizing the real-time adjustment of the dust concentration of each transfer area. This can not only avoid excessive dust concentration, but also save dust removal foam and reduce dust removal costs.

[0085] like Figure 3 Optionally, the spraying device 2 includes a nozzle 217 and a first adjustment mechanism. The nozzle 217 is connected to the foam generating device 5 via the valve 3. The nozzle 217 is used to spray dust removal foam into the transition area. The first adjustment mechanism is connected to the nozzle 217 and is used to adjust the spatial orientation of the nozzle 217.

[0086] For example, the spraying device 2 is disposed in front of the transition area (i.e., on one side of the positive Y-axis direction). The first adjustment mechanism is used to adjust the position movement of the nozzle 217 in at least one of the X-axis, Y-axis and Z-axis directions, and / or to adjust the deflection angle of the nozzle 217 in a certain direction, such as the deflection angle around the X-axis, Y-axis or Z-axis, which will be described in detail later.

[0087] In this way, the spatial orientation of the nozzle 217 can be adjusted to a suitable position to spray dust-removing foam, for example, allowing the dust-removing foam to cover a larger area.

[0088] In a specific embodiment of the spraying device 2, the first adjustment mechanism includes a first connecting seat 211 and a mounting seat 212. The first connecting seat 211 is used to be disposed at the corresponding transition area. The mounting seat 212 is connected to the first connecting seat 211 and is used to install the nozzle 217. The mounting seat 212 and the first connecting seat 211 are pivotally connected by a first pivot shaft 213, which extends in the horizontal direction.

[0089] The first adjustment mechanism includes a first connecting seat 211 and a mounting seat 212. The first connecting seat 211 is located above the conveyor line for receiving aggregate in the transfer area. The mounting seat 212 is connected to the first connecting seat 211 and is used to install the nozzle 217. The mounting seat 212 and the first connecting seat 211 are pivotally connected by a first pivot shaft 213. The first pivot shaft 213 extends in the horizontal direction.

[0090] It should be noted that the first connecting seat 211 is located above the conveyor line used for transferring aggregates. For example, for the transfer area located at the front end of the second conveyor line 104, the first connecting seat 211 is located above the third conveyor line 105. In this case, the first connecting seat 211 can be connected to the frame of the third conveyor line 105 or the frame of the second conveyor line 104, which is not a limitation.

[0091] like Figure 3 As shown, exemplarily, the spraying device 2 is located in front of the transfer area (i.e., in the positive Y-axis direction). The first pivot shaft 213 is mounted on the first connecting seat 211 and extends along the X-axis direction. Generally, the nozzle 217 is positioned directly opposite the center of the aggregate pile in the transfer area to achieve a larger coverage area of ​​the aggregate pile. The nozzle 217 can be set at a preset height from the conveyor line used to receive the aggregate, so that the dust-removing foam it sprays forms a dust-removing foam pile on the conveyor line. When the mounting seat 212 moves relative to the first pivot shaft 213, the spraying direction of the nozzle 217 changes, and its spraying direction can be adjusted according to actual needs.

[0092] like Figure 3 As shown, the first adjustment mechanism also includes a locking connection structure, which is disposed between the mounting base 212 and the first connecting base 211. The locking connection structure keeps the relative positions of the mounting base 212 and the first connecting base 211 locked.

[0093] The locking connection structure can be a screw assembly. For example, the screw assembly includes a screw that passes through and is threadedly connected to the mounting base 212. When the mounting base 212 moves relative to the first connecting base 211 to a preset position, the small end of the screw abuts against the first connecting base 211, thereby locking the position of the mounting base 212. For example, as... Figure 3As shown, the locking connection structure includes a sliding groove 2111 in the first connecting seat 211, a through hole 2121 in the mounting seat 212, a screw, and a nut. The screw passes through the through hole 2121 and the sliding groove 2111 and is threadedly connected to the nut, which also enables the relative position locking of the mounting seat 212 and the first connecting seat 211. The edge of the sliding groove 2111 can also be provided with scale lines, thus facilitating quick adjustment of the relative position of the mounting seat 212. The structure is simple and highly practical.

[0094] Unlike the first adjustment mechanism which includes a locking connection structure, the first adjustment mechanism also includes a first drive mechanism. The first drive mechanism is connected to both the mounting base 212 and the first connecting base 211 to drive the mounting base 212 to move relative to the first connecting base 211. In this case, the first drive mechanism can also communicate with the controller.

[0095] For example, it can be that a first pivot shaft 213 is rotatably connected to a first mounting base 212, one end of the first pivot shaft 213 is fixedly connected to the mounting base 212, and the other end passes through a first connecting base 211 and is rotatably connected to the first connecting base 211. The first drive mechanism includes a motor, and the output shaft of the motor is connected to the other end of the first pivot shaft 213. Of course, the first drive mechanism can also use a gear and rack, wire drive, push rod, etc. to drive the first connecting base 211, which is not a limitation.

[0096] Thus, the mounting base 212 can be adjusted in real time relative to the first connecting base 211 through the first drive mechanism. For example, the mounting base 212 can be made to swing up and down around the first pivot axis 213 relative to the first connecting base 211. In this case, the nozzle 217 has a large spray range in the vertical direction. The advantage is more obvious when the aggregate drop height is high in the transition area (e.g., the distance between the outlet 102 and the lower conveyor line in the vertical direction) or the movement path is long. The dust removal foam sprayed by the nozzle 217 has a large coverage of the aggregate pile and can reduce the dust emission rate.

[0097] like Figure 3 and Figure 4 As shown, the first adjustment mechanism also includes a second connecting seat 214, which is located below the first connecting seat 211. The bottom of the first connecting seat 211 is connected to the second connecting seat 214 via a second pivot shaft 216; the second pivot shaft 216 extends vertically. When the first connecting seat 211 rotates relative to the second connecting seat 214 about the second pivot shaft 216, the first connecting seat 211 causes the mounting seat 212 and the nozzle 217 on it to swing left and right.

[0098] It should be noted that in some other embodiments, the second connecting seat 214 may also be located above the first connecting seat 211, which is not a limitation. Regardless of its arrangement, the base for fixing the spraying device 2 may be connected to the frame of the upper conveyor line or to the housing of the dispensing device 101, or it may be connected to the frame of the lower conveyor line, or it may be supported on the ground.

[0099] It should be noted that, similar to the locking connection structure between the mounting base 212 and the first connecting base 211, another locking connection structure can also be provided between the first mounting base 212 and the second mounting base 212. Similarly, similar to the first drive mechanism between the mounting base 212 and the first connecting base 211, another first drive mechanism can also be provided between the first mounting base 212 and the second mounting base 212. Thus, the two first drive mechanisms enable the nozzle 217 to adjust its rotational freedom in at least two directions, covering a larger area and reducing the possibility of dust dispersion. Simultaneously, it facilitates real-time adjustment of the foam quantity in each block within the transition area by adjusting the nozzle 217's posture, saving foam consumption (at this time, the transition area can be divided into different blocks according to the spray range of the nozzle 217; different amounts of dust-removing foam can be sprayed when the nozzle 217's posture is adjusted to align with different blocks).

[0100] like Figure 4 As shown, optionally, the first adjustment mechanism further includes a third connecting seat 215; a second connecting seat 214 is movably disposed on the third connecting seat 215, and the second connecting seat 214 moves relative to the third connecting seat 215 along a first direction and / or a second direction. Both the first and second directions are perpendicular to the vertical direction, and the first and second directions are set at a preset angle. For example, when the spraying device 2 is located directly in front of the transition area (i.e., when the spraying device 2 is located in the positive Y-axis direction of the transition area), the first direction is consistent with the Y-axis direction, and the second direction is consistent with the X-axis direction. For example, the second connecting seat 214 is provided with a waist-shaped groove, and the third connecting seat 215 is provided with a threaded hole. The screw passes through the waist-shaped groove and is threadedly connected to the threaded hole. The extension direction of the waist-shaped groove can be consistent with the first direction, or consistent with the second direction, or inclined relative to the first and second directions, which will not be described in detail here.

[0101] Optionally, each transition area is provided with multiple spraying devices 2, which are evenly distributed around the circumference of the transition area.

[0102] For example, a spray device 2 as described in the above embodiment is provided at the front and rear of the transition area. For example, a spray device 2 as described in the above embodiment is provided at the left and right sides of the transition area. For example, a spray device 2 as described in the above embodiment is provided at the front, back, left, and right of the transition area.

[0103] Thus, compared to setting only one spray device 2, for example, in front of the transition area, the arrangement of multiple spray devices 2 allows each nozzle 217 to cooperate from various angles to achieve a seamless coverage of the transition area, preventing dust from escaping from areas such as the rear that are not easily covered by dust removal foam.

[0104] Optionally, the spraying device 2 further includes a fourth connecting seat and a second driving mechanism. The first adjusting mechanism is movably disposed on the fourth connecting seat, and the second driving mechanism is disposed between the first adjusting mechanism and the fourth connecting seat and is used to drive the first adjusting mechanism to move along a first path. The first path is at least partially disposed around the transition area (not shown in this schematic diagram).

[0105] For example, the second driving mechanism is a guide rail slider mechanism, with its guide rail disposed on the fourth connecting seat and its slider disposed on the first adjusting mechanism, for example, on the third connecting seat 215 of the first adjusting mechanism. The guide rail is curved and consistent with the first path. For example, the fourth connecting seat is provided with a guide rail, the first adjusting mechanism is provided with a slider, and a rack is connected to the first connecting seat 211, while a gear is provided on the second adjusting mechanism. The driving component of the second driving mechanism realizes the overall movement of the first adjusting mechanism on the fourth connecting seat through the driving gear. The rack and pinion can also be replaced with wire drive, which is not a limitation.

[0106] For example, multiple fourth connecting seats are evenly distributed along the same circumference. Aggregate falling from above passes through this circle and falls into the conveyor line below. There need to be a connection between the connecting seats. For example, the fourth connecting seat is configured as a ring structure and is arranged around the transition area. One or more first adjustment mechanisms and nozzles 217 corresponding to the first adjustment mechanisms are provided on the fourth connecting seat.

[0107] In this way, the number of spray devices 2 can be reduced for the same transition area without affecting its dust removal effect.

[0108] It should be noted that, unlike the arrangement where the first pivot axis 213 extends horizontally and the second pivot axis 216 extends vertically, the first pivot axis 213 can also extend vertically and the second pivot axis 216 can extend horizontally, achieving the same function. In this case, the structure and spatial relative positions of each connecting seat should be adjusted accordingly, which will not be described in detail here.

[0109] In addition, in the above embodiments, the first pivot axis 213 or the second pivot axis 216 extends in the horizontal direction and the direction of extension points to the transition area, thereby obtaining a larger coverage area, which will not be described in detail here.

[0110] like Figure 5 As shown, another embodiment of the present invention provides a dust removal method applied to the dust removal system described above. The dust removal method includes:

[0111] Step S1: Obtain dust concentration information at each of the aforementioned transition areas in real time.

[0112] For example, dust concentration information at each transition area is obtained through each detection device 4.

[0113] Step S2: When the dust concentration at the target transfer area is higher than the preset range, open the valve 3 connected to the spray device 2 at the target transfer area; wherein, the target transfer area is any one of the transfer areas.

[0114] In some embodiments, dust concentration information at each transfer zone is acquired sequentially according to the aggregate conveying order. When the dust concentration at one of the transfer zones, such as the transfer zone at the front end of the second conveyor line 104, is higher than a preset range, the valve 3 at that transfer zone is opened, thereby causing the corresponding spraying device 2 to spray dust-removing foam.

[0115] In this way, the dust removal method can promptly locate the target transition area where the dust concentration is higher than the preset range. By opening the valve 3 connected to the corresponding spraying device 2, the corresponding spraying device 3 sprays foam, thereby reducing the dust concentration in the target transition area and preventing excessive dust concentration from affecting the health and work efficiency of the staff.

[0116] Furthermore, before acquiring the dust concentration information at each of the transition areas in real time, the dust removal method further includes:

[0117] Obtain speed information for each conveyor line;

[0118] When the speed of any of the conveyor lines is greater than or equal to the preset speed, the foam generator 5 is activated.

[0119] For example, the preset speed is 0. The conveyor line is generally started before or simultaneously with the batching device 101, so the operating status of the aggregate conveying system 1 can be determined by the speed of the conveyor line.

[0120] Thus, when the speed of the conveyor line is greater than or equal to the preset speed, there may be a risk of dust concentration within the preset high concentration range in each transfer area of ​​the aggregate conveying system 1. At this time, the foam generating device 5 is turned on, so that the spraying device 2 can spray dust removal foam at any time, which can improve the response speed of the dust removal system, and has high reliability and strong practicality.

[0121] Optionally, after opening the valve 3 connected to the spray device 2 at the target transition area, the dust removal method further includes:

[0122] The opening information of valve 3 and the speed information of the conveyor line at the target transfer area are obtained at a preset sampling period.

[0123] The opening of valve 3 is adjusted in real time based on the opening information of valve 3, the speed information of the conveyor line (e.g., the speed information of the conveyor line used for transferring aggregates), and the preset maintenance typical amount of dust removal foam corresponding to the target transfer area.

[0124] Specifically, the opening information of valve 3 includes the opening information of valve 3 at each sampling time from the opening of valve 3 to the current sampling period. For example, it includes the initial opening of valve 3, which can be set manually, for example, to 1 / 3 to 1 / 2 of the maximum opening of valve 3. This will not be described in detail here.

[0125] For example, when other parameters remain constant (the conveyor speed and the discharge flow rate remain constant), the amount of dust-collecting foam required to maintain the dust concentration in the transfer area within a preset concentration range (e.g., meeting environmental protection requirements) is the preset typical maintenance amount of dust-collecting foam in that transfer area. The preset typical maintenance amount may vary depending on the parameters and can be obtained based on past experience, databases, or training. The preset typical maintenance amount can be manually set and adjusted according to specific results.

[0126] Specifically, taking the first discharge port 102 as an example (the first discharge port 102 is...) Figure 1 The first discharge port 102, located at the rear end, corresponds to a preset maintenance typical value in its transfer area. The transfer area in front of the second conveyor line 104 corresponds to another preset maintenance typical value.

[0127] For example, the (historical) opening information of valve 3 can be used to roughly determine the total amount of dust-removing foam sprayed by the spraying device 2 at the target transition area. Similarly, the speed information of the conveyor line can be used to roughly determine the amount of dust-removing foam liquefied at the target transition area, thereby determining whether the amount of dust-removing foam at the target transition area has reached the preset typical maintenance amount, and thus adjusting the opening of valve 3 in real time.

[0128] For example, in some embodiments, when valve 3 is in the open state, the preset typical amount is kept constant, and the speed of the conveyor line increases, the amount of dust removal foam liquefaction in the transition area increases. At this time, the real-time opening of valve 3 should be increased.

[0129] Thus, by associating the valve 3 opening adjustment strategy with the conveyor speed information, the preset maintenance typical value, and the historical opening of valve 3, the valve 3 opening adjustment strategy becomes reliable.

[0130] Furthermore, the step of adjusting the opening of valve 3 in real time based on the opening information of valve 3, the speed information of the conveyor line, and the preset maintenance typical amount of dust removal foam corresponding to the target transfer area includes:

[0131] The real-time dust removal foam quantity at the target transfer area is generated based on the opening information of valve 3 and the speed information of the conveyor line;

[0132] The opening of valve 3 is adjusted in real time according to the real-time dust removal foam volume and the preset maintenance typical volume.

[0133] The real-time dust removal foam volume is the cumulative value of the dust removal foam at the target transition area (the cumulative value should exclude liquefied dust removal foam), which will be explained in detail later.

[0134] For example, when the preset maintenance typical amount is greater than the real-time dust removal foam amount, the opening of valve 3 is increased. The extent of the increase in the opening of valve 3 can also be adjusted according to the difference between the preset maintenance typical amount and the real-time dust removal foam amount.

[0135] For example, if the real-time dust removal foam volume in the target transition area is less than the preset maintenance typical amount in the next sampling cycle according to the current opening of valve 3, the opening of valve 3 is increased.

[0136] In this way, the dust concentration at the target transition area can be reduced as much as possible, and the waste of dust removal foam caused by excessive dust removal foam can be avoided to a certain extent.

[0137] Furthermore, the preset maintenance typical amount is determined based on the drop height and drop range of the aggregate at the target transition area:

[0138] When the target transfer area is any discharge port area of ​​the aggregate conveying system 1, the preset maintenance typical amount is determined based on the drop height at the discharge port area and the cross-sectional area at the lower end of the discharge port.

[0139] At this point, the aggregate falling along the first conveyor line 103 is approximately rectangular. Theoretically, the dust-collecting foam pile at the target transition area needs to enclose this rectangular block to minimize dust escape from the target transition area. For example, the dust-collecting foam pile at the target transition area is designed as a frustum or truncated cone, and the preset maintenance typical amount is obtained from the volume of the frustum or truncated cone. The slope of the side of the frustum or truncated cone can be adjusted; for example, the preset maintenance typical amount can be 1-1.3 times the volume of the frustum or truncated cone, such as 1.1 times.

[0140] When the target transfer area is any transfer point area of ​​the conveyor line of the aggregate conveying system 1, the preset maintenance typical amount is determined based on the drop height of the aggregate, the drop width of the aggregate, and the speed at which the aggregate leaves the conveyor line at the transfer point area.

[0141] The drop width can be understood as the dimension along the width of the conveyor line when the aggregate pile begins to fall. At this time, the movement path of the aggregate is roughly parabolic. The design shape of the dust removal foam pile at the target transition area is also set as a frustum. The slope of each side of the frustum can be different. The preset maintenance typical amount can be 1-1.5 times the volume of the frustum, for example, 1.2 times.

[0142] In some implementations, corresponding preset maintenance typical values ​​are obtained based on the above parameters, and a database is generated. When used again, a matching preset maintenance typical value is searched in the database based on each parameter.

[0143] Thus, the preset maintenance typical amount corresponds to the actual aggregate transfer situation in each transfer area. If the amount of dust removal foam at the target transfer area can reach the preset maintenance typical amount, the possibility of dust emission at the target transfer area can be reduced. The preset maintenance typical amount is more reasonable and avoids waste caused by using excessive dust removal foam.

[0144] Specifically, assuming the sampling period is T and the initial system time is t = 0, the amount of dust removal foam V(k) in the target transfer area at the kth sampling time is:

[0145] V(k)=Kp{S(k)+(1 / T I )∑ k i＝0 S i T+T D [S(k)-S(k-1)] / T]}+V M Equation (1)

[0146] △V(k)=V(k)-V(k-1) Equation (2)

[0147] Based on equations (1) and (2), equation (3) is obtained as follows:

[0148] V(k)=V(k-1)+Kp{S(k)-S(k-1)+(T / T I )S(k)+(T D / T)[S(k)-2S(k-1)+S(k-2)]+V M Equation (3)

[0149] Among them, V MLet S(k) be the initial foam volume at the target transfer area, and S(k) be the foam accumulation rate at the target transfer area during the k-th sampling. For any foam accumulation rate S at any sampling, we have S = Sp - Sq, where Sp = k1P, Sp is the foam generation rate, P is the opening degree of valve 3 (that is, Sp is linearly related to the opening degree of valve 3), Sq = k2Q, Sq is the foam liquefaction rate, and Q is the speed of the conveyor line corresponding to the target transfer area (the speed of the lower conveyor line, i.e., the speed of the conveyor line used for transferring aggregates, that is, Sq is linearly related to the conveyor belt speed).

[0150] k1, k2, T, K P T I T D As constant terms, T and K are obtained through multiple data training iterations. P T I T D And apply it.

[0151] It should be noted that the initial foam volume is the same as the volume of the dust removal foam pile at the target transfer area when t equals 0. This initial foam volume can be 0 or other values, which will not be explained in detail here. The conveying speed of each conveyor line is generally the same. If the speeds are different, the speed of the conveyor line used when adjusting the opening of valve 3 includes the speed of the conveyor line used for transferring aggregates.

[0152] Thus, by accumulating the above formulas, the real-time dust removal foam volume at the target transition area from the start of sampling to the current moment is obtained, providing a relatively accurate dust removal foam volume data, which provides a data basis for further adjusting the opening degree of valve 3 at the target transition area.

[0153] In an optional embodiment of the present invention, the opening of the valve 3 is adjusted in real time based on the opening information of the valve 3, the speed information of the conveyor line, and the preset maintenance typical amount of dust removal foam corresponding to the target transfer area.

[0154] For example, according to the above equations (1)-(3), V(k+1) is equal to the preset maintenance typical value, thereby obtaining the target value of the valve 3 opening. The valve 3 opening is adjusted in real time according to the target value. At this time, the speed information of the conveyor line includes the real-time speed of the conveyor line for transferring aggregate. The target value of the valve 3 opening is calculated using the real-time speed of the conveyor line for transferring aggregate. The real-time speed of the conveyor line for transferring aggregate can be the speed collected in the current sampling period. Of course, it can also be the speed of the conveyor line for transferring aggregate in the next sampling period obtained by various means. For example, the speed is determined according to the preset adjustment strategy. Because the sampling period is short, it will not have a significant impact on the final target value of the valve 3 opening.

[0155] For example, when the speed of the conveyor line used to transfer aggregates is constant, V(k+1) is equal to the preset maintenance typical value, thereby obtaining the target value of the opening of valve 3.

[0156] Thus, the valve 3 opening adjustment strategy is more conducive to quickly achieving the preset maintenance typical amount of real-time dust removal foam, which can reduce the dust concentration at the target transition area as much as possible, and can avoid the waste of dust removal foam caused by excessive dust removal foam to a certain extent.

[0157] Furthermore, in the above embodiments, after adjusting the opening degree of the valve (3) in real time, the dust removal method further includes:

[0158] When the real-time dust removal foam volume reaches the preset typical maintenance volume, the duration during which the dust concentration at the target transition area is higher than the preset range within the preset time period is statistically analyzed.

[0159] The preset maintenance typical amount is adjusted according to the duration range and the preset time period.

[0160] For example, a ratio of a duration segment to a preset time segment is generated. When the ratio is greater than or equal to a first preset ratio (e.g., 0.1-1, 0.2), the preset maintenance typical value is increased, for example, by a ratio of one percent or five percent.

[0161] When the ratio is less than the first preset ratio (e.g., 0.01-0.3, 0.15), the preset maintenance typical value is reduced, for example, by increasing the preset maintenance typical value by one percent or five percent.

[0162] In this way, the differential requirements for maintaining typical values ​​due to individual differences (such as aggregate batch differences) can be met, and the amount of dust removal foam can be saved to a certain extent.

[0163] Furthermore, the system tracks the number of adjustments that continuously increase or decrease the preset typical value. A warning message is issued when the number of adjustments exceeds the preset limit (e.g., 5-10 times). This allows staff to verify the parameters and avoid erroneous adjustments due to equipment malfunction.

[0164] However, it is not limited to this. For example, when the opening of valve 3 decreases to a preset opening, such as 10% of the maximum opening, the preset maintenance typical value is reduced, for example, by 1%. When the preset maintenance typical value decreases to a preset percentage (e.g., 80%) of the initial preset maintenance typical value, a warning message is issued. Personnel can then verify the parameters, for example, to check if the detection device is malfunctioning.

[0165] This method can adjust or maintain the amount of dust removal foam at each transition area according to the actual situation, ensuring that the dust concentration is within a certain range, which will not be described in detail here.

[0166] Another embodiment of the present invention provides an aggregate conveying system that includes any of the dust removal systems described above. This aggregate conveying system possesses all the beneficial effects of the dust removal system, which will not be described in detail here.

[0167] Another embodiment of the present invention provides a mixing plant that includes any of the dust removal systems described above, or includes the aggregate conveying system of the previous embodiment. This mixing plant possesses all the beneficial effects of the dust removal system or the aggregate conveying system, which will not be described in detail here.

[0168] In the description of this specification, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly, for example, it can refer to a fixed connection or a detachable connection. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0169] In the description of this specification, the references to terms such as "embodiment," "one embodiment," "some implementations," and "exemplary" indicate that a specific feature, structure, or other characteristic described in connection with that embodiment or implementation is included in at least one embodiment or implementation. The above illustrative expressions do not necessarily refer to the same embodiment or implementation. The specific features, structures, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0170] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A dust removal system, characterized in that, Includes a spraying device (2), a valve (3), and a foam generating device (5); The number of the spraying devices (2) is multiple, and the multiple spraying devices (2) are respectively used to be set in each transfer area of ​​the aggregate conveying system (1) and respectively used to spray dust removal foam into each transfer area. The transfer area includes the discharge port area of ​​the aggregate conveying system (1) and / or the transfer point area of ​​the conveying line of the aggregate conveying system (1). The foam generating device (5) is connected to each of the spraying devices (2) via the valve (3); A detection device (4) is provided at at least one of the transition areas and is used to detect dust concentration. The controller is communicatively connected to the detection device (4), the foam generating device (5), and the valve (3); A speed sensor is used to be installed at the conveyor line of the aggregate conveying system (1) to obtain the speed of the conveyor line of the aggregate conveying system (1). The speed sensor is communicatively connected to the controller. Alternatively, the controller is also configured to communicate with the driver of the conveyor line of the aggregate conveying system (1); The spraying device (2) includes a nozzle (217) and a first adjustment mechanism. The nozzle (217) is connected to the foam generating device (5) via the valve (3). The first adjustment mechanism is connected to the nozzle (217) and is used to adjust the spatial attitude of the nozzle (217). The first adjustment mechanism includes a first connecting seat (211) and a mounting seat (212). The first connecting seat (211) is disposed at the corresponding transition area. The mounting seat (212) is connected to the first connecting seat (211) and is used to mount the nozzle (217). The mounting seat (212) and the first connecting seat (211) are pivotally connected via a first pivot shaft (213). The first adjustment mechanism further includes a second connecting seat (214), which is located above or below the first connecting seat (211). The first connecting seat (211) and the second connecting seat (214) are connected by a second pivot (216). The first pivot (213) extends horizontally and the second pivot (216) extends vertically, or the first pivot (213) extends vertically and the second pivot (216) extends horizontally. The first adjustment mechanism further includes a third connecting seat (215), and a second connecting seat (214) is movably disposed on the third connecting seat (215). The second connecting seat (214) moves relative to the third connecting seat (215) along a first direction and / or a second direction. The first direction and the second direction are both perpendicular to the vertical direction, and the first direction and the second direction are set at a preset angle.

2. The dust removal system according to claim 1, characterized in that, The number of valves (3) is multiple, and the foam generating device (5) is connected to each of the spraying devices (2) through each of the valves (3); The number of the detection devices (4) is multiple, and the multiple detection devices (4) are respectively used to be installed at each of the transition areas; The number of speed sensors is multiple, and each speed sensor is respectively used to be installed at each of the conveyor lines to detect the speed of the corresponding conveyor line.

3. The dust removal system according to claim 1, characterized in that, The first adjustment mechanism further includes a locking connection structure, wherein the locking connection structure is provided between the mounting base (212) and the first connecting base (211) and the relative position is locked by the locking connection structure, and / or, the locking connection structure is provided between the first connecting base (211) and the second connecting base (214) and the relative position is locked by the locking connection structure; Alternatively, the first adjustment mechanism may include a first drive mechanism, wherein the first drive mechanism is provided between the mounting base (212) and the first connecting base (211) and the relative position adjustment is achieved through the first drive mechanism, and / or, the first drive mechanism is provided between the first connecting base (211) and the second connecting base (214) and the relative position adjustment is achieved through the first drive mechanism.

4. The dust removal system according to claim 1, characterized in that, The spraying device (2) further includes a fourth connecting seat and a second driving mechanism. The first adjusting mechanism is movably disposed on the fourth connecting seat, and the second driving mechanism is disposed between the first adjusting mechanism and the fourth connecting seat and is used to drive the first adjusting mechanism to move along a first path. The first path is at least partially disposed around the transition area.

5. A dust removal method, applied to the dust removal system according to any one of claims 1 to 4, characterized in that, include: Real-time dust concentration information at each transition area; When the dust concentration at the target transfer area is higher than the preset range, the valve (3) connected to the spray device (2) at the target transfer area is opened; wherein, the target transfer area is any one of the transfer areas.

6. The dust removal method according to claim 5, characterized in that, After opening the valve (3) connected to the spray device (2) at the target transition area, the method further includes: The opening information of the valve (3) at the target transfer area and the speed information of the conveyor line are obtained at a preset sampling period. The opening of the valve (3) is adjusted in real time according to the opening information of the valve (3), the speed information of the conveyor line, and the preset maintenance typical amount of dust removal foam corresponding to the target transfer area.

7. The dust removal method according to claim 6, characterized in that, The real-time adjustment of the valve (3) opening based on the valve (3) opening information, the conveyor line speed information, and the preset maintenance typical amount of dust removal foam corresponding to the target transfer area includes: The real-time dust removal foam quantity at the target transfer area is generated based on the opening information of the valve (3) and the speed information of the conveyor line; The opening of the valve (3) is adjusted in real time according to the real-time dust removal foam amount and the preset maintenance typical amount; or, the opening of the valve (3) is adjusted in real time according to the real-time dust removal foam amount, the preset maintenance typical amount and the speed information of the conveyor line.

8. The dust removal method according to claim 7, characterized in that, The preset maintenance typical value is determined based on historical data, or, The preset maintenance typical amount is determined based on the drop height and drop range of the aggregate at the target transition area: When the target transfer area is any discharge port area of ​​the aggregate conveying system (1), the preset maintenance typical amount is determined based on the drop height of the aggregate at the discharge port area and the cross-sectional area at the lower end of the discharge port. When the target transfer area is any transfer point area of ​​the conveyor line of the aggregate conveying system (1), the preset maintenance typical amount is determined based on the drop height of the aggregate, the drop width of the aggregate, and the speed at which the aggregate leaves the conveyor line at the transfer point area.

9. The dust removal method according to any one of claims 5 to 8, characterized in that, Before acquiring the dust concentration information at each of the aforementioned transition areas in real time, the method further includes: Obtain speed information for each conveyor line; When the speed of any of the conveyor lines is greater than or equal to the preset speed, the foam generator (5) is activated.

10. An aggregate conveying system, characterized in that, Includes the dust removal system as described in any one of claims 1 to 4.

11. A mixing plant, characterized in that, Includes the dust removal system according to any one of claims 1 to 4, or includes The aggregate conveying system according to claim 10.

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