Electric rotary lifting exhaust fume collecting hood

Abstract

The invention discloses an electric rotary lifting exhaust fume collecting hood, and belongs to the technical field of exhaust fume collecting hoods. Comprising a controller, a stand column, a lifting type fixing frame, a position adjusting arm unit, a loop chain type electric elevator, a smoke hood position adjuster, a smoke collecting hood unit and a smoke sensing assembly, and a plurality of sets of dovetail sliding rail bodies are fixed to the front side of the stand column; the lifting type fixing frame comprises a frame body, and a dovetail sliding block is integrally manufactured on the back face of the frame body. The dovetail sliding block and the dovetail sliding rail body are installed in a sliding mode. The position adjusting arm unit comprises a supporting arm, a rotating shaft is fixed to one end of the supporting arm, and the bottom of the rotating shaft and a conical bearing on the lower portion of the frame body are installed; the top of the rotating shaft is mounted with a guide bearing at the upper part of the frame body; a parallel shaft-helical gear speed reducer for driving the rotating shaft to rotate is fixed at the top of the frame body; according to the electric rotary lifting exhaust fume collecting hood, the hood body is smoothly and stably lifted, a pollution source can be dynamically sensed, the trapping state can be optimized, and efficient exhaust fume collection is achieved.

Description

Technical Field

[0001] This invention specifically relates to an electrically operated rotating and lifting smoke hood, belonging to the field of smoke hood technology. Background Technology

[0002] In industrial dust control systems, fume hoods are the source collection devices that determine treatment efficiency and energy consumption. Their core function is to efficiently capture pollutants at their point of origin and introduce them into the purification system before they diffuse. Existing fume hood types include top umbrella-shaped hoods suitable for thermal processes, side-suction hoods for lateral capture, fully enclosed sealed hoods, and omnidirectional flexible arms that can be flexibly positioned. For example, Chinese Patent Publication No. CN213040992U discloses a lifting dust collection device, which includes a gantry with a downward-facing dust collection hood installed on top of the gantry. The dust collection hood and the gantry are vertically movable. A lifting motor is fixedly installed on the outside of the gantry, and a pull rope is wound around the output shaft end of the lifting motor. The upper end of the pull rope passes around the top of the gantry and is fixed to the dust collection hood; it can completely cover the furnace opening at the top of the smelting furnace, preventing the smoke and dust generated during the smelting process from leaking into the atmosphere, avoiding environmental pollution, and improving the workshop working environment; the existing lifting dust collection devices have the following defects: First, the lifting mechanism mostly relies on ropes or chains for direct traction, which is prone to shaking and jamming during operation, and there is also a risk of breakage after long-term use, which seriously affects the stability of collection; Second, most smoke collection hoods are fixed, which cannot achieve the optimal collection state of "near point suction"; Third, they lack the ability to dynamically sense and adaptively adjust the location of pollution sources, requiring frequent manual adjustments, which is cumbersome to operate and has high energy consumption. Summary of the Invention

[0003] To address the aforementioned issues, this invention proposes an electrically operated rotating and lifting smoke hood. The hood's lifting and lowering are smooth and stable, enabling dynamic sensing of pollution sources and optimization of the collection process, thus achieving efficient smoke collection.

[0004] The electric rotating lifting smoke hood of the present invention includes: A controller for overall machine control, wherein the controller is communicatively connected to a manual remote control; The column has multiple sets of dovetail slide rails fixed to its front side; A lifting and fixing frame includes a frame body, on the back of which a dovetail slider is integrally formed; the dovetail slider is slidably installed with a dovetail slide rail. The positioning arm unit includes a support arm, one end of which is fixed with a rotating shaft. The bottom of the rotating shaft is installed with a tapered bearing at the bottom of the frame body; the top of the rotating shaft is installed with a guide bearing at the top of the frame body; and a parallel shaft-helical gear reducer for driving the rotating shaft to rotate is fixed at the top of the frame body. A chain electric hoist, wherein the chain electric hoist is fixed to the top surface of a column, and the lifting end of the chain electric hoist is fixed to the top of the frame body through a hanging column; A smoke hood adjuster includes an adjusting seat fixed to the front end of a support arm; a rotating platform is fixed on the adjusting seat; a corner seat is fixed to the rotating end of the rotating platform; the driving end of the rotating platform is connected to one end of a flexible shaft via a universal coupling; the other end of the flexible shaft is connected to a first adjusting motor via a universal coupling; a protective sleeve is fitted over the flexible shaft; and the first adjusting motor is fixed to the top of the frame. A smoke collection hood unit includes a hood body, which is fixed to a corner seat; a smoke collection pipe is provided in the middle of the hood body, and the smoke collection pipe is connected to a dust collector through a spring tube; A smoke detection assembly, comprising a detection frame fixed to the top of a column, wherein a smoke detection unit is mounted on the detection frame.

[0005] During use, the hood can be automatically controlled to move closer to the smoke source based on its location, or it can be manually controlled to move closer to the smoke source via a remote control. When the hood is manually moved closer to the smoke source, the controller actively memorizes the final shape and travel path of the hood, forming a one-to-one binding between the smoke source, travel path, and hood state. When the smoke sensing component detects the same smoke source, the controller controls the hood to perform actions according to the actively memorized data corresponding to that smoke source, achieving near-point suction. During operation, the frame is driven to move linearly up and down along the dovetail slide rail of the column by a chain-type electric hoist. The horizontal circumferential adjustment of the support arm can be achieved through the adjustment arm unit. During adjustment, the rotating shaft is driven to rotate by a parallel shaft-helical gear reducer, causing the support arm to rotate synchronously. The support arm is supported and guided at the bottom by tapered bearings, and rotated and guided at the top of the rotating shaft by guide bearings, allowing it to rotate and swing horizontally. Additionally, the hood's position can be adjusted via a hood adjuster, which is fixed to the top of the frame to prevent gravity from being applied to the support arm. During operation, the first adjuster rotates, providing rotational force to the drive end of the rotary table via a universal coupling, a flexible shaft, and another universal coupling. The rotating end of the rotary table drives the corner seat to rotate and swing vertically, thus adjusting the hood's position. When the hood completes its position adjustment and approaches the smoke source, the dust collector activates, drawing smoke from the smoke source into the dust collector through a spring tube and a smoke collection pipe. The dust collector's purification system then captures and purifies the smoke.

[0006] Furthermore, it also includes a linear adjustment assembly, which includes a dovetail slide rail on the support arm, a slide arm slidably disposed on the dovetail slide rail, and a rack integrally formed on the side of the slide arm; a second adjustment motor is fixed at the bottom of the support arm, and a gear body that meshes with the rack is fixed on the output shaft of the second adjustment motor.

[0007] When it is necessary to move the smoke hood closer to the smoke source, the second adjustment motor is activated, driving the gear body to rotate synchronously. The gear body meshes with the rack, converting the rotational motion of the gear body into the linear motion of the sliding arm. The sliding arm slides linearly along the dovetail slide, causing the hood at the front end of the sliding arm to move closer to the smoke source.

[0008] Furthermore, an electric rotary table is fixed to the end of the corner seat away from the rotary table, and the rotating end of the electric rotary table is fixed to the cover.

[0009] When it is necessary to adjust the circumferential direction of the cover's horizontal plane, the controller sends a signal to the electric rotary table, which then drives the cover to rotate circumferentially, thereby adjusting the cover's state.

[0010] Furthermore, an electric pan-tilt unit is fixed to the front end of the detection frame, and a laser ranging unit is fixed to the electric pan-tilt unit; the smoke sensing unit is fixed to the electric pan-tilt unit; the position of the laser ranging unit can be adjusted by the electric pan-tilt unit, realizing the adjustment of the circumferential direction and tilt direction of the laser ranging unit, thereby enabling active dynamic smoke sensing.

[0011] Furthermore, laser obstacle avoiders or smoke concentration sensors are fixed at the four ends of the hood; when the controller controls the hood to approach the smoke source, the laser obstacle avoiders can actively avoid obstacles to prevent the hood from colliding with the processing equipment. At the same time, when the controller controls the hood to enter the smoke source, the initial smoke collection position of the hood is adjusted, and then the smoke concentration sensors collect smoke around the smoke source for a second time. The controller actively adjusts the position of the hood so that the hood can collect smoke from the entire range of the smoke source.

[0012] Furthermore, the smoke sensing unit is a camera, a laser scattering dust concentration sensor, or an infrared temperature sensor. The camera captures images of the entire workstation area. Since the workstation position and the camera position remain unchanged, the relative coordinates of the sampled image also remain unchanged. The laser scattering dust concentration sensor can collect the smoke concentration in the entire workstation area. When the set concentration value is reached, it is determined that smoke has occurred. When a certain process is being carried out in the workstation, if a high-temperature environment occurs in that process, the infrared temperature sensor can directly detect it at the processing position.

[0013] Furthermore, the controller is equipped with a regional automatic control module, and the operation of the regional automatic control module is as follows: Smoke location capture: The smoke sensing component detects in real time whether there is smoke in the work area. When smoke is present, the location value of the smoke source and the distance value between the smoke source and the smoke sensing unit are obtained. For smoke collection mode matching, the area control module traverses the association table between the smoke source location and the smoke collection status of the hood based on the position value to obtain the smoke collection status of the hood and the deflection angle of the support arm; then, the area control module obtains the initial travel value based on the smoke collection status of the hood and the distance value. Because multiple smoke sources exist in multiple workstations within a region or in different processes within a single workstation; and different processing equipment exists in different workstations or processes, the shape and size of the processing equipment can easily interfere with the hood's entry into the smoke collection area of ​​the smoke source. For example, due to equipment height limitations, the hood cannot perform top suction; and due to equipment shape limitations, the hood can only approach the smoke source at a set angle for side suction. Furthermore, depending on the different diffusion surfaces of the smoke source, in order to improve the comprehensiveness of smoke collection, the hood may approach the smoke source along its length or width. Only by setting a hood smoke collection state for each smoke source can the near-point suction requirements be better matched. When the smoke collection position is executed, the controller calculates the angle difference based on the current angle of the support arm and the acquired deflection angle, and controls the parallel shaft-helical gear reducer to eliminate the angle difference. Then, after the controller acquires the smoke collection status of the hood, it controls the first adjustment motor and the electric rotary table to complete the setting of the smoke collection status of the hood. Next, the controller controls the second adjustment motor and the chain electric hoist to operate according to the initial travel value, realize the initial travel value response, and move the hood closer to the smoke source.

[0014] Furthermore, the smoke collection states of the hood include X-direction top suction, Y-direction top suction, X-direction side suction with tilt angle, and Y-direction side suction with tilt angle. Both X-direction top suction and Y-direction top suction are directed directly above the smoke source. X-direction top suction is directed to the smoke source directly above it along the length direction, while Y-direction top suction is directed to the smoke source directly above it along the width direction. Switching between X-direction and Y-direction is performed by a rotary table to adjust the tilt angle between the support arm and the hood. Both X-direction side suction with tilt angle and Y-direction side suction with tilt angle are directed to the side of the smoke source. The side suction and tilt angle adjustments are performed by a hood adjuster.

[0015] Furthermore, the location value of the smoke source is obtained as follows: the smoke sensing unit intermittently collects an overall image of the workstation and obtains the smoke location through a smoke recognition model to obtain the smoke source.

[0016] The smoke recognition model works as follows: The smoke sensing unit intermittently collects global images of the workstation area, setting a step time during collection to achieve intermittent image acquisition. In each collection cycle, a complete image of the current workstation is captured. The camera transmits the captured images to the smoke recognition model in real time. If the smoke recognition model uses YOLOv8, it performs inference to analyze the images and outputs the recognition results. If the model does not detect smoke, the system records "No smoke in this cycle" and waits for the next collection cycle. If the model detects smoke, it outputs one or more bounding boxes containing the smoke area and their corresponding bounding boxes. Pixel coordinates: Based on the pixel coordinates of the bounding box (e.g., top left corner (800, 600), bottom right corner (900, 700)), combined with the preset pixel-physical coordinate mapping relationship, the actual physical location range of the smoke at the workstation is calculated (e.g., X coordinate between 15.3 meters and 16.8 meters, Y coordinate between 10.1 meters and 11.5 meters). The smoke recognition model calculates the physical location information of the smoke source, and obtains the actual location of the smoke source based on the physical location information, thus obtaining the location value and distance value of the smoke source. Finally, the smoke collection status of the hood is obtained through the smoke source, and the smoke collection position adjustment response is executed to match the near-point suction requirements.

[0017] Furthermore, the location value of the smoke source is obtained as follows: The controller has a preset deflection angle-smoke source association table. During the inspection process, after the smoke sensing unit detects the smoke source, it obtains the current deflection angle and determines that the deflection angle is within a certain angle range. Then, by traversing the deflection angle-smoke source association table through this angle range, the smoke source can be directly obtained. Finally, the smoke collection status of the hood is obtained through the smoke source to match the near-point suction requirements.

[0018] Compared with existing technologies, the electric rotary lifting fume hood of this invention uses a chain-type electric hoist and dovetail slide rails to achieve smooth lifting and lowering of the hood, solving the problems of shaking and jamming during hood repositioning and significantly improving operational stability. Through a smoke sensing component, it can dynamically sense the pollution source and determine its location. Then, the controller automatically controls the chain-type electric hoist, adjusting arm unit, and linear adjusting component to perform three-dimensional automatic adjustment based on the smoke source location. The hood's state is automatically adjusted through the adjusting arm unit, hood adjuster, and electric rotary table, achieving dynamic tracking of the pollution source without frequent manual adjustments, greatly improving operational convenience. Precise control of the hood's position and state enables "near-point suction," significantly reducing airflow requirements and energy consumption compared to traditional fixed fume hoods. The fume hood is compatible with both automatic and manual control modes, adapting to the needs of different industrial scenarios and having a wider range of applications. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the overall structure of the electric rotating lifting smoke hood of the present invention.

[0020] Figure 2 For the present invention Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0021] Figure 3 For the present invention Figure 1 A magnified schematic diagram of the structure at point B in the middle.

[0022] Figure 4 This is a schematic diagram of the overall structure of the electric rotating lifting smoke hood according to Embodiment 2 of the present invention.

[0023] Figure 5 This is a schematic diagram of the installation structure of the column, electric pan-tilt unit and smoke detection unit of the present invention.

[0024] Reference numerals: 1. Column, 2. Dovetail slide rail, 3. Frame, 4. Support arm, 5. Rotating shaft, 6. Conical bearing, 7. Parallel shaft-helical gear reducer, 8. Chain electric hoist, 9. Hanging column, 10. Adjustment seat, 11. Rotary table, 12. Corner seat, 13. Cover, 14. Smoke collection pipe, 15. Detection frame, 16. Smoke sensing unit, 17. Sliding arm, 18. Rack, 19. Second adjustment motor, 20. Gear body, 21. Electric rotary table, 22. Electric pan-tilt head, 23. Laser obstacle avoider, 24. First adjustment motor. Detailed Implementation

[0025] Example 1: like Figures 1 to 3 The electrically operated rotating and lifting smoke hood shown includes: A controller for overall machine control, wherein the controller is communicatively connected to a manual remote control; Column 1, with multiple sets of dovetail slide rails 2 fixed to the front side of the column 1; A lifting and fixing frame includes a frame body 3, on the back of which a dovetail slider is integrally formed; the dovetail slider is slidably installed with a dovetail slide rail body 2. The positioning arm unit includes a support arm 4, one end of which is fixed with a rotating shaft 5. The bottom of the rotating shaft 5 is installed with a tapered bearing 6 at the bottom of the frame body 3; the top of the rotating shaft 5 is installed with a guide bearing at the top of the frame body 3; and a parallel shaft-helical gear reducer 7 for driving the rotating shaft 5 to rotate is fixed at the top of the frame body 3. A chain electric hoist 8 is fixed to the top surface of the column 1, and the lifting end of the chain electric hoist 8 is fixed to the top of the frame 3 through the hanging column 9. A smoke hood adjuster includes an adjusting base 10 fixed to the front end of a support arm 4; a rotating platform 11 is fixed on the adjusting base 10; a corner seat 12 is fixed to the rotating end of the rotating platform 11; the driving end of the rotating platform 11 is connected to one end of a flexible shaft via a universal coupling; the other end of the flexible shaft is connected to a first adjusting motor 24 via a universal coupling; a protective sleeve is fitted over the flexible shaft; and the first adjusting motor 24 is fixed to the top of the frame 3. The smoke collection hood unit includes a hood body 13, which is fixed to a corner seat 12; a smoke collection pipe 14 is provided in the middle of the hood body 13, and the smoke collection pipe 14 is connected to the dust collector through a spring tube. A smoke detection assembly, comprising a detection frame 15 fixed to the top of a column 1, wherein a smoke detection unit 16 is mounted on the detection frame 15.

[0026] In use, the hood 13 can be automatically controlled to move closer to the smoke source based on its location, or it can be manually controlled to move closer to the smoke source via a remote control. When the hood 13 is manually controlled to move closer to the smoke source, the controller actively memorizes the final shape and travel path of the hood 13, forming a one-to-one binding of smoke source-travel path-hood 13 state. When the smoke sensing component detects the same smoke source, the controller controls the hood 13 to perform actions according to the actively memorized data corresponding to that smoke source, achieving near-point suction from the hood 13. During operation, the frame 3 is driven to move linearly up and down along the dovetail slide rail 2 of the column 1 via a chain-type electric lifting machine 8. The horizontal circumferential adjustment of the support arm 4 can be achieved through the adjustment arm unit. During adjustment, the rotating shaft 5 is driven to rotate via a parallel shaft-helical gear reducer 7, causing the support arm 4 to rotate synchronously. The rotating shaft 5 of the support arm 4 is connected to the horizontal circumferential adjustment of the support arm 4 via a chain-helical gear reducer 7. A tapered bearing 6 provides support and bottom guidance, while the top of the rotating shaft 5 is guided by a guide bearing, allowing the support arm 4 to rotate and swing horizontally. Additionally, the hood 13 can be adjusted via a hood adjuster. The hood 13's state is adjusted by a first adjusting motor 24, which is fixed to the top of the frame 3 to prevent gravity from being applied to the support arm 4. During operation, the first adjusting motor 24 rotates, providing rotational force to the drive end of the rotary table 11 via a universal coupling, a flexible shaft, and another universal coupling. The rotating end of the rotary table 11 drives the corner seat 12 to rotate and swing vertically, thus adjusting the state of the hood 13. When the hood 13 completes its state adjustment and approaches the smoke source, the dust collector activates, drawing smoke from the smoke source into the dust collector through a spring tube and a smoke collection pipe 14. The dust collector's purification system captures and purifies the smoke.

[0027] It also includes a linear adjustment assembly, which includes a dovetail slide rail on the support arm 4, a slide arm 17 slidably disposed on the dovetail slide rail, and a rack 18 integrally formed on the side of the slide arm 17; a second adjustment motor 19 is fixed at the bottom of the support arm 4, and a gear body 20 that meshes with the rack 18 is fixed on the output shaft of the second adjustment motor 19.

[0028] When it is necessary to move the smoke hood closer to the smoke source, the second adjustment motor 19 is activated, driving the gear body 20 to rotate synchronously. The gear body 20 meshes with the rack 18, converting the rotational motion of the gear body 20 into the linear motion of the sliding arm 17. The sliding arm 17 slides linearly along the dovetail slide, causing the hood 13 at the front end of the sliding arm 17 to move closer to the smoke source.

[0029] Example 2: like Figure 4 The electric rotating and lifting smoke hood shown has an electric rotary table 21 fixed at the end of the corner seat 12 away from the rotary table 11, and the rotating end of the electric rotary table 21 is fixed to the hood body 13.

[0030] When it is necessary to adjust the circumferential direction of the cover 13 on the horizontal plane, the controller sends a signal to the electric rotary table 21, which then drives the cover 13 to rotate in the circumferential direction, thereby adjusting the state of the cover 13.

[0031] Example 3: like Figure 5 The electrically rotating and lifting smoke hood shown has an electric pan-tilt unit 22 fixed to the front end of the detection frame 15, and a laser ranging unit fixed on the electric pan-tilt unit 22; the smoke sensing unit 16 is fixed on the electric pan-tilt unit 22; the position of the laser ranging unit can be adjusted by the electric pan-tilt unit 22, realizing the adjustment of the circumferential direction and tilt direction of the laser ranging unit, thereby enabling active dynamic smoke sensing.

[0032] The four ends of the cover 13 are fixed with laser obstacle avoiders 23 or smoke concentration sensors. When the controller controls the cover 13 to approach the smoke source, the laser obstacle avoiders 23 can actively avoid obstacles to prevent the cover 13 from hitting the processing equipment. At the same time, when the controller controls the cover 13 to enter the smoke source, the initial smoke collection position of the cover 13 is adjusted. Then, the smoke concentration sensor collects the smoke around the smoke source for a second time. The controller actively adjusts the position of the cover 13 so that the cover 13 can collect smoke from the entire range of the smoke source.

[0033] The smoke sensing unit 16 can be a camera, a laser scattering dust concentration sensor, or an infrared temperature sensor. The camera captures images of the entire workstation area. Since the workstation position and the camera position remain unchanged, the relative coordinates of the sampled images also remain unchanged. The laser scattering dust concentration sensor can collect the smoke concentration in the entire workstation area. When the set concentration value is reached, it is determined that smoke has occurred. When a certain process is being processed in the workstation, if a high-temperature environment occurs in that process, the infrared temperature sensor can directly detect it at the processing position.

[0034] The controller is equipped with a regional automatic control module, and the operation of the regional automatic control module is as follows: Smoke location capture: The smoke sensing component detects in real time whether there is smoke in the work area. When smoke appears, the location value of the smoke source and the distance value between the smoke source and the smoke sensing unit 16 are obtained. Smoke collection mode matching: The area control module traverses the smoke source position and smoke collection status association table of hood 13 according to the position value to obtain the smoke collection status of hood 13 and the deflection angle of support arm 4; then, the area control module obtains the initial travel value according to the smoke collection status of hood 13 and the distance value. Because multiple smoke sources exist in multiple workstations within a region or in different processes within a workstation; and different processing equipment exists in different workstations or processes, the shape and size of the processing equipment can easily interfere with the hood 13 entering the smoke collection area of ​​the smoke source. For example, due to the height limitation of the equipment, the hood 13 cannot perform top suction, and due to the shape limitation of the equipment, the hood 13 can only approach the smoke source at a set angle for side suction. Furthermore, depending on the different diffusion surfaces of the smoke source, in order to improve the comprehensiveness of smoke collection, the hood 13 approaches the smoke source in the length direction or in the width direction, etc. Only by setting a smoke collection state for each smoke source can the near-point suction requirements be better matched. When the smoke collection position is executed, the controller calculates the angle difference based on the current angle of the support arm 4 and the acquired deflection angle, and controls the parallel shaft-helical gear reducer 7 to operate to eliminate the angle difference. Then, after the controller acquires the smoke collection status of the hood 13, it controls the first adjustment motor 24 and the electric rotary table 21 to operate, and completes the smoke collection status setting of the hood 13. Next, the controller controls the second adjustment motor 19 and the chain electric hoist 8 to operate according to the initial travel value, realize the initial travel value response, and make the hood 13 move closer to the smoke source.

[0035] The smoke collection states of the hood 13 include X-direction top suction, Y-direction top suction, X-direction side suction with tilt angle, and Y-direction side suction with tilt angle. Both X-direction top suction and Y-direction top suction are directly above the smoke source. X-direction top suction is directly above the smoke source in the length direction, and Y-direction top suction is directly above the smoke source in the width direction. When switching between X and Y directions, it is executed by the rotary table 11 to adjust the tilt angle between the support arm 4 and the hood 13. Both X-direction side suction with tilt angle and Y-direction side suction with tilt angle are on the side of the smoke source. When adjusting the side suction and tilt angle, the angle is adjusted by the smoke hood adjuster.

[0036] The location value of the smoke source is obtained as follows: the smoke sensing unit 16 intermittently collects the overall image of the workstation and obtains the smoke location through the smoke recognition model to obtain the smoke source.

[0037] The smoke recognition model works as follows: The smoke sensing unit 16 intermittently collects global images of the workstation area. A step time is set during collection to achieve intermittent image acquisition. In each collection cycle, a complete image of the current workstation is captured. The camera transmits the captured images to the smoke recognition model in real time. If the smoke recognition model uses YOLOv8, it performs inference to analyze the images and outputs the recognition results. If the model does not detect smoke, the system records "No smoke in this cycle" and waits for the next collection cycle. If the model detects smoke, it outputs one or more bounding boxes containing the smoke area and their corresponding bounding boxes. The pixel coordinates are calculated based on the pixel coordinates of the bounding box (e.g., top left corner (800, 600), bottom right corner (900, 700)) and the preset pixel-physical coordinate mapping relationship. The actual physical location range of the smoke at the workstation is calculated (e.g., X coordinate between 15.3 meters and 16.8 meters, Y coordinate between 10.1 meters and 11.5 meters). The smoke recognition model calculates the physical location information of the smoke source and obtains the actual location of the smoke source based on the physical location information. The position value and distance value of the smoke source are obtained. Finally, the smoke collection status of the hood 13 is obtained through the smoke source, and the smoke collection position adjustment response is executed to match the near-point suction requirements.

[0038] The location value of the smoke source is obtained as follows: The controller has a preset deflection angle-smoke source association table. During the inspection process, the smoke sensing unit 16 detects the smoke source and obtains the current deflection angle. It determines that the deflection angle is within a certain angle range. Then, by traversing the deflection angle-smoke source association table through this angle range, the smoke source can be directly obtained. Finally, the smoke collection status of the hood 13 is obtained through the smoke source to match the near-point suction requirements.

[0039] The above embodiments are merely preferred embodiments of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present invention are included within the scope of the present invention.

Claims

1. An electrically operated rotating and lifting smoke collection hood, characterized in that: include: A controller for overall machine control, wherein the controller is communicatively connected to a manual remote control; The column has multiple sets of dovetail slide rails fixed to its front side; A lifting and fixing frame includes a frame body, on the back of which a dovetail slider is integrally formed; the dovetail slider is slidably installed with a dovetail slide rail. The positioning arm unit includes a support arm, one end of which is fixed with a rotating shaft. The bottom of the rotating shaft is installed with a tapered bearing at the bottom of the frame body; the top of the rotating shaft is installed with a guide bearing at the top of the frame body; and a parallel shaft-helical gear reducer for driving the rotating shaft to rotate is fixed at the top of the frame body. A chain electric hoist, wherein the chain electric hoist is fixed to the top surface of a column, and the lifting end of the chain electric hoist is fixed to the top of the frame body through a hanging column; A smoke hood adjuster includes an adjusting seat fixed to the front end of a support arm; a rotating platform is fixed on the adjusting seat; a corner seat is fixed to the rotating end of the rotating platform; the driving end of the rotating platform is connected to one end of a flexible shaft via a universal coupling; the other end of the flexible shaft is connected to a first adjusting motor via a universal coupling; a protective sleeve is fitted over the flexible shaft; and the first adjusting motor is fixed to the top of the frame. A smoke collection hood unit, the smoke collection hood unit including a hood body, the hood body being fixed to a corner bracket; A smoke collection pipe is provided in the middle of the hood, and the smoke collection pipe is connected to the dust collector through a spring tube; A smoke detection assembly, comprising a detection frame fixed to the top of a column, wherein a smoke detection unit is mounted on the detection frame.

2. The electrically operated rotating and lifting smoke hood according to claim 1, characterized in that: It also includes a linear adjustment component, which includes a dovetail slide rail on the support arm, a slide arm slidably disposed on the dovetail slide rail, and a rack integrally formed on the side of the slide arm; a second adjustment motor is fixed at the bottom of the support arm, and a gear body that meshes with the rack is fixed on the output shaft of the second adjustment motor.

3. The electrically operated rotating and lifting smoke hood according to claim 2, characterized in that: An electric rotary table is fixed to the end of the corner seat away from the rotary table, and the rotating end of the electric rotary table is fixed to the cover.

4. The electrically operated rotating and lifting smoke hood according to claim 1, characterized in that: The front end of the detection frame is fixed with an electric pan-tilt unit, and a laser ranging unit is fixed on the electric pan-tilt unit; the smoke sensing unit is fixed on the electric pan-tilt unit.

5. The electrically operated rotating and lifting smoke hood according to claim 1, characterized in that: Laser obstacle avoidance devices or smoke and dust concentration sensors are fixed at the four ends of the cover.

6. The electrically operated rotating and lifting smoke hood according to claim 1, characterized in that: The smoke sensing unit is a camera, a laser scattering smoke concentration sensor, or an infrared temperature sensor.

7. The electrically operated rotary lifting smoke hood according to claim 3, characterized in that: The controller is equipped with a regional automatic control module, and the operation of the regional automatic control module is as follows: Smoke location capture: The smoke sensing component detects in real time whether there is smoke in the work area. When smoke is present, the location value of the smoke source and the distance value between the smoke source and the smoke sensing unit are obtained. For smoke collection mode matching, the area control module traverses the association table between the smoke source location and the smoke collection status of the hood based on the position value to obtain the smoke collection status of the hood and the deflection angle of the support arm; then, the area control module obtains the initial travel value based on the smoke collection status of the hood and the distance value. When the smoke collection position is executed, the controller calculates the angle difference based on the current angle of the support arm and the acquired deflection angle, and controls the parallel shaft-helical gear reducer to eliminate the angle difference. Then, after the controller acquires the smoke collection status of the hood, it controls the first adjustment motor and the electric rotary table to complete the setting of the smoke collection status of the hood. Next, the controller controls the second adjustment motor and the chain electric hoist to operate according to the initial travel value, realize the initial travel value response, and move the hood closer to the smoke source.

8. The electrically operated rotary lifting smoke hood according to claim 7, characterized in that: The smoke collection states of the hood include X-direction top suction, Y-direction top suction, X-direction side suction with tilt angle, and Y-direction side suction with tilt angle.

9. The electrically operated rotating and lifting smoke hood according to claim 7, characterized in that: The location value of the smoke source is obtained as follows: the smoke sensing unit intermittently collects overall images of the workstation and obtains the smoke location through the smoke recognition model to obtain the smoke source.

10. The electrically operated rotary lifting smoke hood according to claim 7, characterized in that: The location value of the smoke source is obtained as follows: The controller has a preset deflection angle-smoke source association table. During the inspection process, after the smoke sensing unit detects the smoke source, it obtains the current deflection angle and traverses the deflection angle-smoke source association table to obtain the smoke source.

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