An intelligent dust-generating device for adaptive operation in simulated dust environments

Abstract

The present invention discloses an intelligent controlled dust generating device for simulating adaptive operation in a dust environment, comprising a housing, a material receiving system, a stirring mechanism, a material discharging system, a material spraying system and a control unit. The housing is a square structure with a material discharge port provided on the top. The material receiving system comprises a barrel, a powder receiving tray, an electronic weighing device and a driving mechanism. The barrel is mounted on a mounting bracket in the housing through an electronic weighing device, and a material feeding port is provided on the top. The powder receiving tray rotary seal is provided on the inner side of the lower end of the barrel, and an annular material guide groove is provided on the upper surface. The driving mechanism drives the powder receiving tray to rotate horizontally. The bottom of the negative pressure discharge box slides with the powder receiving tray and is provided with a suction port. The negative pressure discharge box is connected to the material spraying system provided on the outer wall of the housing through a tapered tube, and the dust entering the tapered tube is sprayed into the external space. The present invention can realize non-stop feeding, ensure the duration and integrity of the experiment, accurately control the powder output, improve the accuracy of the experiment, and simulate the dust generation conditions under different working conditions.

Description

Technical Field

[0001] The invention belongs to the technical field of mining engineering, and in particular relates to an intelligent dust-generating device for self-adapting operations in simulated dust environments. Background Art

[0002] As mine operations in my country continue to become more mechanized, the generation of respirable dust within mines is also increasing, seriously impacting the health of underground workers. Mine dust control can be addressed from three perspectives: source control, process control, and personal protection. For the latter two, experimental simulations of dust generated in actual production environments are essential. This requires dust generators to provide researchers with a controllable dust generation environment, enabling them to study and evaluate dust characteristics, as well as conduct relevant testing and optimization.

[0003] Traditional dust-generating devices generate very limited amounts of dust. The dust trough of a high-precision belt-type dust generator, patented in China with publication number CN115970599B, ​​is small. A dust-generating device, patented in China with publication number CN115107311A, also suffers from the same problem, failing to meet diverse experimental requirements. When the dust feedstock is insufficient, the experiment must be paused to replenish it before it can continue, which can lead to experimental errors and affect the experimental process. Furthermore, the dust-generating device, patented in China with publication number CN220120504U, utilizes a fan to provide airflow. The dust mixed with the airflow is highly susceptible to environmental influences. Experiments conducted in relatively humid and hot environments can result in inconsistencies between the experimental and production dust conditions, leading to significant errors in the experimental results. Most dust-generating devices also lack a weighing function, which could be linked to an intelligent control system to achieve more functionality. To this end, we propose a dust-generating device suitable for multiple environments, capable of long-term operation, and equipped with a weighing function. Therefore, the existing technology urgently needs further improvement. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to propose an intelligent dust-generating device for adaptive operation in a simulated dust environment, so as to solve the above-mentioned technical problems.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] An intelligent controlled dust generating device for adaptive operation in simulated dust environments comprises a box body, a material receiving system, a stirring mechanism, a material discharging system, a material spraying system and a control unit. The box body is a square structure, and a front door body and a rear door body are respectively provided on the front and rear side walls of the box body. A top cover is provided on the top rear side, and a material discharge port is opened on the top cover.

[0007] The material receiving system is arranged inside the box, which includes a barrel, a powder receiving plate, an electronic weighing device and a driving mechanism. The electronic weighing device is arranged at the lower part of the box through a mounting frame. The barrel is a cylindrical shape with an open bottom. The barrel is vertically arranged above the electronic weighing device, and a feeding port is opened on the top.

[0008] The powder receiving pan is arranged at the bottom of the barrel and rotates and seals with the lower end of the barrel. An annular material guide groove is provided on the upper surface of the powder receiving pan. The driving mechanism is located below the powder receiving pan, and its output end is connected to the bottom of the powder receiving pan, and drives the powder receiving pan to rotate around the axis of the barrel.

[0009] The discharging system includes a negative pressure discharging box and a tapered tube. The negative pressure discharging box is fixedly mounted on the inner wall of the barrel, and its bottom is slidably engaged with the powder receiving plate. The bottom of the negative pressure discharging box is provided with a suction port facing the material guide groove, and the bottom of the negative pressure discharging box is provided with a material blocking block matching the cross-section of the material guide groove. The material blocking block is located on one side of the suction port, and the tapered tube is located outside the barrel, one end of which is connected to the middle part of the negative pressure discharging box, and the other end extends to the outside of the box body.

[0010] The stirring mechanism is arranged inside the barrel and adjacent to the negative pressure discharge box. The spraying system is arranged on the outer wall of the box body. The other end of the tapered tube is connected to the inlet end of the spraying system, and the dust entering the tapered tube is sprayed into the external space.

[0011] The control unit includes a PLC controller, a touch panel and an emergency stop switch. The touch panel is fixedly embedded in the top rear side of the box, the PLC controller is installed inside the box, and the emergency stop switch is arranged on one side of the touch panel. The touch panel and the emergency stop switch are respectively communicated with the PLC controller.

[0012] Furthermore, the box body includes a bottom plate, a top plate, a left side plate, a right side plate and a frame. The bottom plate, the top plate and the two side plates are welded to form the outer shell of the box body. The frame is a steel frame structure that matches the outer shell and is fixedly welded to the inner wall of the outer shell.

[0013] The front door body and the rear door body are respectively installed on the front and rear sides of the box body, and the top cover is installed on the top plate. The front door body, the rear door body and the top cover are all provided with a handle.

[0014] Furthermore, the barrel includes a barrel and an upper end cover. The barrel is a straight circular tube with a constant cross-section. An upper flange is provided on the outer side of the upper end of the barrel. The edge of the upper end cover is fixedly and sealedly connected to the upper flange. The feeding port is located on the center side of the upper end cover and communicates with the interior of the barrel.

[0015] A lower flange is provided on the outer side of the lower part of the cylinder. The electronic scale is a circular ring structure and is fixed on the mounting frame. The lower flange is fixedly connected to the electronic scale with bolts. The signal output end of the electronic scale is communicatively connected to the PLC controller.

[0016] The inner side of the lower end of the cylinder is provided with an annular flange integral with the cylinder, and the powder receiving pan is located above the annular flange. The powder receiving pan is in rotational sealing cooperation with the inner wall of the cylinder and the upper surface of the annular flange.

[0017] Furthermore, the powder receiving plate is a circular metal plate that matches the inner diameter of the cylinder. A first annular groove is formed on the circumferential side wall of the powder receiving plate. A first O-ring is embedded in the first annular groove. The first O-ring is in sliding contact with the inner side wall of the cylinder.

[0018] A second annular groove is formed on the upper surface of the annular flange, the center of the second annular groove is located on the axis of the cylinder, a second O-ring is embedded in the second annular groove, and the second O-ring is in sliding contact with the bottom of the powder receiving tray.

[0019] Furthermore, the driving mechanism includes a spline shaft, a spline sleeve and a first servo motor. The spline sleeve is vertically arranged below the powder receiving plate and is set on the mounting frame through a bearing seat.

[0020] The first servo motor is fixed at the bottom of the mounting frame, and its output shaft is coaxially fixedly connected to the lower end of the spline sleeve. The spline shaft is movably arranged inside the spline sleeve, and its upper end passes through the top of the spline sleeve and is fixedly connected to the bottom of the powder receiving plate as a whole. In the working state, the first servo motor drives the powder receiving plate to rotate horizontally through the spline sleeve.

[0021] Furthermore, the center point of the material guide trough is located at the center of the powder receiving plate, and the cross section along the circumferential direction thereof is a uniform cross section.

[0022] The upper surface of the powder receiving plate is further provided with two annular guide grooves, which are respectively located on the inner and outer sides of the material guide groove and are arranged concentrically with the material guide groove.

[0023] Two arc-shaped sliding blocks corresponding to the positions of the guide slides are fixed to the bottom of the negative pressure discharge box. Each arc-shaped sliding block is located in the corresponding guide slide and slides with the powder receiving plate.

[0024] Furthermore, the stirring mechanism includes a stirring shaft, blades and a second servo motor. The stirring shaft is arranged vertically in an eccentric manner, and its upper end is rotatably engaged with the upper end cover through a bearing. The second servo motor is fixedly installed above the top of the barrel, and its output shaft is connected to the upper end of the stirring shaft.

[0025] The blade is a vertically arranged rectangular metal plate, the middle of the blade is fixedly connected to the lower end of the stirring shaft, and the long side of the bottom of the blade is close to the upper surface of the powder receiving plate.

[0026] Furthermore, the negative pressure discharge box is a shell composed of an annular side wall, an upper cover and a lower cover. The annular side wall is cylindrical with an irregular cross-section and is vertically arranged on one side of the axis of the cylinder. The upper cover and the lower cover seal the upper and lower ends of the annular side wall.

[0027] The suction port is a circular hole opened on the lower cover body, and two arc-shaped sliding blocks are fixedly welded to the bottom of the lower cover body.

[0028] One side outer wall of the annular side wall is attached to and fixed to the inner side wall of the cylinder, and the side outer wall close to the blade is an arc surface adapted to the movement trajectory of the blade end, and the blade is arranged adjacent to the arc outer wall of the negative pressure discharge box.

[0029] Furthermore, the spraying system includes a vacuum generator and a Venturi nozzle. The Venturi nozzle is fixed to an outer wall of one side of the box through a pipe clamp, and the outlet end of the Venturi nozzle faces rearward.

[0030] The vacuum generator is arranged on the front side of the venturi nozzle, and its outlet end is connected and communicated with the inlet end of the venturi nozzle. The inlet end of the vacuum generator is connected and communicated with the middle part of the negative pressure discharge box through the tapered tube.

[0031] By adopting the above technical solution, the beneficial technical effects of the present invention are:

[0032] (1) The present invention adopts a design method of non-stop feeding, which ensures the long-term and integrity of the experiment to the greatest extent.

[0033] (2) The use of the electronic weighing device can transmit information in both forward and reverse directions with the touch panel. In the forward transmission state, the dust mass is recorded in real time and in time periods, which greatly reduces the error caused by manual weighing, reduces the workload of the experimenter, and ensures the accuracy of the experiment. In the reverse transmission state, different working conditions can be simulated through the touch panel, which has a wider range of applications.

[0034] (3) The present invention controls the dust supply amount through the rotation speed of the powder receiving plate. The electronic weighing device records the dust amount in the barrel in real time and sends it to the PLC controller. The PLC controller adjusts the rotation speed of the powder receiving plate in real time through the data to achieve precise control of the dust generation amount per unit time, and simulates the quantitative dust generation of adaptive operations under multiple environmental conditions according to the actual situation of the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The present invention is a schematic diagram of a front side view of an intelligently controlled dust generating device for adaptive operation in a simulated dust environment.

[0036] Figure 2 This is a schematic diagram of the rear side view of an intelligent control dust generating device for adaptive operation in simulated dust environment according to the present invention.

[0037] Figure 3 It is a front side structural schematic diagram of the present invention after removing the box body.

[0038] Figure 4 It is a schematic diagram of the rear side structure of the present invention after the box body is removed.

[0039] Figure 5 yes Figure 3 A top view of the combined structure shown in FIG.

[0040] Figure 6 yes Figure 5 It is a cross-sectional view of AA of the combined structure.

[0041] Figure 7 yes Figure 3 A schematic diagram of a part of the device shows the combination of a stirring mechanism, a powder receiving tray and a negative pressure discharge box.

[0042] Figure 8 yes Figure 7 A partial enlarged view of part B.

[0043] Figure 9 It is a schematic diagram of the bottom view structure of the negative pressure discharge box of the present invention.

[0044] Figure 10 yes Figure 3 The schematic diagram of another part shows the combination of the reducer and the injection system. DETAILED DESCRIPTION

[0045] In order to make the advantages and technical solutions of the present invention more clear and explicit, the present invention is described in detail below with reference to specific embodiments.

[0046] Combine Figures 1 to 10 An intelligent controlled dust generating device for adaptive operation in a simulated dust environment includes a box body 1, a material receiving system, a stirring mechanism, a discharging system, a spraying system and a control unit. The box body 1 is a square structure. The box body 1 includes a bottom plate, a top plate 11, a left side plate 12, a right side plate 13 and a frame. The bottom plate, the top plate 11 and the two side plates are welded to form the outer shell of the box body 1. The frame is a steel frame structure that matches the outer shell and is fixedly welded to the inner wall of the outer shell.

[0047] A front door body 14 and a rear door body 15 are respectively provided on the front and rear side walls of the box body 1. The front door body 14 and the rear door body 15 are respectively installed on the front and rear sides of the box body 1. The right side of the front door body 14 is hinged to the front right side of the frame, and the left side of the front door body 14 is locked to the front left side of the frame. The right side of the rear door body 15 is hinged to the rear right side of the frame, and the left side of the front door body 14 is locked to the rear left side of the frame.

[0048] In addition, a top cover 16 is installed at the rear of the top plate 11 of the box body 1. The front side of the top cover 16 is hinged to the middle of the top plate 11, and the rear side of the top cover 16 is locked together with the top plate 11. A handle is installed on each of the front door 14, the rear door 15, and the top cover 16. The front door 14 and the rear door 15 can be opened at the front and rear sides of the box body 1 by the handles respectively configured, which facilitates the inspection and maintenance of the material receiving system, stirring mechanism, and discharge system of the box body 1. In addition, the top cover 16 is provided with a rectangular discharge port 18, through which dust can be added to the interior of the material receiving system.

[0049] The control unit includes a PLC controller, a touch panel 21 and an emergency stop switch 22. The touch panel 21 is fixedly embedded in the top rear side of the box 1, the PLC controller is installed inside the box 1, and the emergency stop switch 22 is set on one side of the touch panel 21. The touch panel 21 and the emergency stop switch 22 are respectively communicated with the PLC controller.

[0050] The material receiving system is arranged inside the box body 1, which includes a barrel 31, a powder receiving plate 32, an electronic scale 33 and a driving mechanism. The electronic scale 33 is arranged at the lower part of the box body 1 through the mounting bracket 17. The barrel 31 is a cylindrical shape with an open bottom. The barrel 31 is vertically arranged above the electronic scale 33, and a feeding port 34 is opened on the top.

[0051] The barrel 31 includes a barrel body 311 and an upper end cover 312. The barrel body 311 is a straight circular tube with a uniform cross-section. An upper flange 313 is provided on the outer side of the upper end of the barrel body 311. The edge of the upper end cover 312 is fixedly and sealedly connected to the upper flange 313. The feeding port 34 is located on the center side of the upper end cover 312 and communicates with the interior of the barrel body 311.

[0052] A lower flange 314 is provided on the outer side of the lower part of the barrel 311. The electronic scale 33 is a circular structure and is fixed on the mounting frame 17. The lower flange 314 is fixedly connected to the electronic scale 33 with bolts. The signal output end of the electronic scale 33 is communicated with the PLC controller. The electronic scale 33 transmits data to the PLC controller in real time to achieve precise control of the amount of dust inside the barrel 31. When the amount of dust in the barrel 31 is less than the set value, the powder supply mechanism supplies dust into the barrel 31 through the feeding port 34 to ensure continuous operation of the intelligent control dust generating device. The powder supply mechanism adopts existing technology.

[0053] The powder receiving pan 32 is disposed at the bottom of the barrel 31 and is in rotational sealing engagement with the lower end of the barrel 31. The lower end inner side of the barrel 311 has an annular flange 315 integrally formed therewith. Specifically, the powder receiving pan 32 is a circular metal plate that matches the inner diameter of the barrel 311. The powder receiving pan 32 is located above the annular flange 315 and is in rotational sealing engagement with the inner wall of the barrel 311 and the upper surface of the annular flange 315.

[0054] The powder receiving pan 32 has a first annular groove on its circumferential sidewall, within which a first O-ring 35 is embedded. This first O-ring 35 slides in contact with the inner sidewall of the barrel 311. A second annular groove is defined on the upper surface of the annular flange 315, the center of which is located on the axis of the barrel 311. A second O-ring 36 is embedded in this second annular groove, which slides in contact with the bottom of the powder receiving pan 32. During operation, the powder receiving pan 32 rotates horizontally relative to the barrel 31, which contains dust. The first and second O-rings 35 and 36 rotate to seal the powder receiving pan 32 against the barrel 31, preventing leakage of dust from the barrel 31.

[0055] The driving mechanism includes a spline shaft 37, a spline sleeve 38 and a first servo motor 39. The spline sleeve 38 is vertically arranged below the powder receiving plate 32 and is set on the mounting frame 17 through the bearing seat 381. The mounting frame 17 is fixedly connected to the frame bolts inside the box body 1. The spline transmission method is adopted to ensure the transmission rotation while enabling the electronic scale 33 to accurately weigh the dust inside the barrel 31, so as to accurately control the amount of dust inside the barrel 31 and ensure the amount of dust generated per unit time.

[0056] The first servo motor 39 is fixed to the bottom of the mounting frame 17, and its output shaft is coaxially fixedly connected to the lower end of the spline sleeve 38. The signal end of the first servo motor 39 is connected to the PLC controller, which controls the direction and speed of the output shaft of the first servo motor 39 through instructions. The spline shaft 37 is movably inserted into the spline sleeve 38, and its upper end passes through the top of the spline sleeve 38 and is fixedly connected to the bottom of the powder receiving tray 32. Under working conditions, the first servo motor 39 drives the powder receiving tray 32 to rotate horizontally through the spline sleeve 38. The electronic scale 33 weighs the weight of the dust inside the barrel 31 in real time and sends the weighing data to the PLC controller in real time. Through data interaction, it controls the speed of the powder receiving tray 32 to achieve precise control of the powder spraying amount and instantly change the spraying amount per unit time, accurately simulating the dust environment conditions in the mine tunnel.

[0057] An annular guide trough 321 is defined on the upper surface of the powder receiving pan 32. A drive mechanism is located below the pan 32, with its output end connected to the bottom of the pan 32. This mechanism drives the pan 32 to rotate about the axis of the barrel 31. The guide trough 321 collects dust from the barrel 31 and delivers it to the negative pressure discharge box 41, ensuring stable dust feeding.

[0058] The center point of the guide trough 321 is located at the center of the powder receiving pan 32, and the cross section along its circumference is uniform. The upper surface of the powder receiving pan 32 is also provided with two annular guide grooves 322, which are located on the inner and outer sides of the guide trough 321 and are arranged concentrically with the guide trough 321.

[0059] The discharging system includes a negative pressure discharging box 41 and a tapering tube 42. The negative pressure discharging box 41 is fixedly mounted on the inner wall of the barrel 31, and its bottom is slidingly engaged with the powder receiving plate 32. Specifically, the bottom of the negative pressure discharging box 41 is fixed with two sections of arc-shaped sliders 43 corresponding to the positions of the guide grooves 322. Each section of the arc-shaped slider 43 is respectively located in the corresponding guide groove 322 and is slidingly engaged with the powder receiving plate 32.

[0060] The bottom of the negative pressure discharge box 41 is provided with a suction port 44 that is opposite to the material guide trough 321, and the bottom of the negative pressure discharge box 41 is fixed with a blocking block 45 that matches the cross-section of the material guide trough 321. The blocking block 45 is located on the inner side of the material guide trough 321, and both sides and the bottom of the blocking block 45 are in contact with the inner wall of the material guide trough 321. In addition, the blocking block 45 is located on the side of the suction port along the counterclockwise rotation direction of the powder receiving plate 32. The side wall of the blocking block 45 close to the suction port 44 is an arc surface concentric with the suction port 44. When the powder receiving plate 32 rotates horizontally to the bottom of the negative pressure discharge box 41, the blocking block 45 blocks and scrapes away the dust filled in the material guide trough 321, so that the material guide trough 321 allows the blocked dust to continuously enter the interior of the negative pressure discharge box 41 through the suction port 44, and the amount of dust entering the negative pressure discharge box 41 per unit time is controlled by controlling the rotation speed of the powder receiving plate 32.

[0061] The tapered tube 42 is located outside the barrel 31, and the thick end of the tapered tube 42 is connected to the middle part of the negative pressure discharge box 41, and the narrow end of the tapered tube 42 extends to the outside of the box body 1 and is connected to the inlet end of the spraying system. The spraying system continuously inhales the negative pressure discharge box 41 through the tapered tube 42, so that the negative pressure discharge box 41 is in a negative pressure state. The dust in the guide groove 321 below the negative pressure discharge box 41 continuously enters the negative pressure discharge box 41 through the suction port 44. The dust is atomized and diffused inside the negative pressure discharge box 41, and is accelerated into the spraying system through the tapered tube 42, and then sprayed into the external space through the spraying system.

[0062] The stirring mechanism is arranged inside the barrel 31 and adjacent to the negative pressure discharge box 41. Specifically, the stirring mechanism includes a stirring shaft 51, a blade 52 and a second servo motor 53. The stirring shaft 51 is arranged vertically in an eccentric manner, and its upper end is rotatably engaged with the upper end cover 312 through a bearing. The second servo motor 53 is fixedly installed above the top of the barrel 31, and its output shaft is connected to the upper end of the stirring shaft 51.

[0063] The blade 52 is a vertically arranged rectangular metal plate. The middle portion of the blade 52 is fixedly connected to the lower end of the stirring shaft 51 , and the long side of the bottom of the blade 52 is close to the upper surface of the powder receiving tray 32 .

[0064] Specifically, the negative pressure discharge box 41 is a housing consisting of an annular sidewall, an upper cover, and a lower cover. The annular sidewall is cylindrical with a special cross-section and is vertically arranged on one side of the axis of the cylinder 311. The upper and lower covers seal the upper and lower ends of the annular sidewall. The suction port 44 is a circular hole opened in the lower cover, and two arc-shaped sliders 43 are fixedly welded to the bottom of the lower cover.

[0065] One side outer wall of the annular sidewall is attached to and fixed to the inner wall of the cylinder 311. The outer wall on the side adjacent to the blade 52 is a circular arc surface that matches the motion trajectory of the blade 52 end. The blade 52 is arranged adjacent to the circular arc outer wall of the negative pressure discharge box 41. A second servo motor 53 drives the blade 52 to rotate via the stirring shaft 51. The rotation area of ​​the blade 52 is located on the side of the negative pressure discharge box 41 opposite to the rotation direction of the powder receiving plate 32. The rotation area of ​​the blade 52 covers the width of the guide trough 321. The blade 52 stirs the dust below, ensuring that the guide trough 321 is filled with dust before entering the bottom of the negative pressure discharge box 41. The rotation speed of the powder receiving plate 32 achieves stable and uniform dust delivery.

[0066] The spraying system is mounted on the outer wall of the housing 1. The other end of the tapered tube 42 is connected to the inlet of the spraying system, spraying dust entering the tapered tube 42 into the external space. Specifically, the spraying system includes a vacuum generator 61 and a Venturi nozzle 62. The Venturi nozzle 62 is fixed to the outer wall of the housing 1 via a pipe clamp 63, with the outlet of the Venturi nozzle 62 facing rearward.

[0067] The vacuum generator 61 is arranged in front of the venturi nozzle 62 , and its outlet end is connected to the inlet end of the venturi nozzle 62 . The inlet end of the vacuum generator 61 is connected to the middle part of the negative pressure discharge box 41 through the tapered tube 42 .

[0068] Parts not described in the present invention can be implemented by adopting or drawing on existing technologies.

[0069] In addition, the terms “first” and “second” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0070] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0071] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. An intelligent dust-generating device for adaptive operation in simulated dust environments, characterized in that: It includes a box body, a material receiving system, a stirring mechanism, a material discharging system, a material spraying system and a control unit. The box body is a square structure. The front and rear side walls of the box body are respectively provided with a front door body and a rear door body. The top rear side is provided with a top cover, and the top cover is provided with a discharge port. The material receiving system is arranged inside the box, which includes a material barrel, a powder receiving tray, an electronic weighing device and a driving mechanism. The electronic weighing device is arranged at the lower part of the box through a mounting frame. The material barrel is a cylindrical shape with an open bottom. The material barrel is vertically arranged above the electronic weighing device, and a feeding port is opened on the top of the material barrel. The powder receiving pan is arranged at the bottom of the barrel and is in rotational sealing cooperation with the lower end of the barrel. An annular material guide groove is provided on the upper surface of the powder receiving pan. The driving mechanism is located below the powder receiving pan, and its output end is connected to the bottom of the powder receiving pan and drives the powder receiving pan to rotate around the axis of the barrel. The discharging system includes a negative pressure discharging box and a tapered tube. The negative pressure discharging box is fixedly mounted on the inner side wall of the barrel, and its bottom is slidably matched with the powder receiving tray. The bottom of the negative pressure discharging box is provided with a suction port facing the material guide trough. The bottom of the negative pressure discharging box is provided with a material blocking block matching the cross-section of the material guide trough. The material blocking block is located on one side of the suction port. The tapered tube is located outside the barrel, one end of which is connected to the middle part of the negative pressure discharging box and the other end extends to the outside of the box body. The stirring mechanism is arranged inside the barrel and adjacent to the negative pressure discharge box. The spraying system is arranged on the outer wall of the box body. The other end of the reducer is connected to the inlet end of the spraying system to spray the dust entering the reducer into the external space. The control unit includes a PLC controller, a touch panel and an emergency stop switch. The touch panel is fixedly embedded on the top rear side of the box, the PLC controller is installed inside the box, and the emergency stop switch is set on one side of the touch panel. The touch panel and the emergency stop switch are respectively connected to the PLC controller for communication; The barrel includes a barrel and an upper end cover. The barrel is a straight circular tube with a uniform cross-section. An upper flange is provided on the outer side of the upper end of the barrel. The edge of the upper end cover is fixedly and sealedly connected to the upper flange. The feeding port is located on the center side of the upper end cover and communicates with the interior of the barrel. A lower flange is provided on the outer side of the lower portion of the cylinder. The electronic scale is an annular structure and is fixed to the mounting frame. The lower flange is fixedly connected to the electronic scale with bolts. The signal output end of the electronic scale is communicatively connected to the PLC controller. The inner side of the lower end of the cylinder is provided with an annular flange integral with the cylinder, and the powder receiving pan is located above the annular flange. The powder receiving pan is in rotational sealing engagement with the inner wall of the cylinder and the upper surface of the annular flange. The center point of the material guide trough is located at the center of the powder receiving plate, and the cross section along the circumference thereof is a uniform cross section; The upper surface of the powder receiving plate is further provided with two annular guide grooves, which are respectively located on the inner and outer sides of the material guide groove and are arranged concentrically with the material guide groove; Two arc-shaped sliding blocks corresponding to the positions of the guide slides are fixed to the bottom of the negative pressure discharge box. Each arc-shaped sliding block is located in the corresponding guide slide and slides with the powder receiving plate.

2. The intelligent dust-generating device for adaptive operation in simulated dust environment according to claim 1, characterized in that: The box body includes a bottom plate, a top plate, a left side plate, a right side plate and a frame. The bottom plate, the top plate and the two side plates are welded to form the outer shell of the box body. The frame is a steel frame structure that matches the outer shell and is fixedly welded to the inner wall of the outer shell. The front door body and the rear door body are respectively installed on the front and rear sides of the box body, and the top cover is installed on the top plate. The front door body, the rear door body and the top cover are all provided with a handle.

3. The intelligent dust-generating device for adaptive operation in simulated dust environment according to claim 1, characterized in that: The powder receiving plate is a circular metal plate that matches the inner diameter of the cylinder. A first annular groove is formed on the circumferential side wall of the powder receiving plate. A first O-ring is embedded in the first annular groove. The first O-ring is in sliding contact with the inner side wall of the cylinder. A second annular groove is formed on the upper surface of the annular flange, the center of the second annular groove is located on the axis of the cylinder, a second O-ring is embedded in the second annular groove, and the second O-ring is in sliding contact with the bottom of the powder receiving tray.

4. The intelligent dust-generating device for adaptive operation in simulated dust environment according to claim 1, characterized in that: The driving mechanism includes a spline shaft, a spline sleeve and a first servo motor, wherein the spline sleeve is vertically arranged below the powder receiving plate and is mounted on the mounting frame through a bearing seat; The first servo motor is fixed at the bottom of the mounting frame, and its output shaft is coaxially fixedly connected to the lower end of the spline sleeve. The spline shaft is movably arranged inside the spline sleeve, and its upper end passes through the top of the spline sleeve and is fixedly connected to the bottom of the powder receiving plate as a whole. In the working state, the first servo motor drives the powder receiving plate to rotate horizontally through the spline sleeve.

5. The intelligent dust-generating device for adaptive operation in simulated dust environment according to claim 1, characterized in that: The stirring mechanism includes a stirring shaft, blades and a second servo motor. The stirring shaft is arranged vertically in an eccentric manner, and its upper end is rotatably engaged with the upper end cover through a bearing. The second servo motor is fixedly installed above the top of the barrel, and its output shaft is connected to the upper end of the stirring shaft; The blade is a vertically arranged rectangular metal plate, the middle of the blade is fixedly connected to the lower end of the stirring shaft, and the long side of the bottom of the blade is close to the upper surface of the powder receiving plate.

6. The intelligent dust-generating device for adaptive operation in simulated dust environment according to claim 5, characterized in that: The negative pressure discharge box is a shell composed of an annular side wall, an upper cover and a lower cover. The annular side wall is cylindrical with a special cross-section and is vertically arranged on one side of the axis of the cylinder. The upper cover and the lower cover seal the upper and lower ends of the annular side wall. The suction port is a circular hole opened on the lower cover, and two arc-shaped sliders are fixedly welded to the bottom of the lower cover; One side outer wall of the annular side wall is attached to and fixed to the inner side wall of the cylinder, and the side outer wall close to the blade is an arc surface adapted to the movement trajectory of the blade end, and the blade is arranged adjacent to the arc outer wall of the negative pressure discharge box.

7. The intelligent dust-generating device for adaptive operation in simulated dust environment according to claim 1, characterized in that: The spraying system includes a vacuum generator and a Venturi nozzle, wherein the Venturi nozzle is fixed to an outer wall of one side of the box through a pipe clamp, and the outlet end of the Venturi nozzle faces rearward; The vacuum generator is arranged on the front side of the venturi nozzle, and its outlet end is connected and communicated with the inlet end of the venturi nozzle. The inlet end of the vacuum generator is connected and communicated with the middle part of the negative pressure discharge box through the tapered tube.

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