Novel access control equipment for powder bin of mixing station

Abstract

The invention relates to the technical field of access control equipment, in particular to novel access control equipment for a powder bin of a mixing station, which comprises a door body, the door body is an inlet of the powder bin, a lock catch is arranged on one side of the door body, infrared sensors are arranged on one side of the door body above and below the lock catch, and whether an object completely passes through the door body or not is detected through the infrared sensors; anti-pinch holes are formed in one side of the top and one side of the bottom of the door body, the conveying table is arranged in front of the door body, a conveying channel is formed in the top of the conveying table, and the conveying channel is used for guiding and supporting the transportation equipment to move to the door body along a preset path. The material feature information is captured through the laser scanner and compared with the preset data in the database for analysis, it is ensured that only correct materials can enter the designated stock bin, real-time accurate recognition of the materials entering the access control area is achieved, and the risk of mistaken feeding and confusion of the materials is effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of access control equipment, and in particular to a new access control equipment for a powder silo in a mixing station. Background Art

[0002] As an important facility for the production of building materials, one of the core parts of a mixing plant is the distribution silo system, which is responsible for accurately measuring and distributing various types of powder raw materials, such as cement and fly ash, to ensure the stable quality of building materials such as concrete. However, in the daily operation of the distribution silo, the performance of access control equipment, as a key link in controlling the entry and exit of materials and personnel access, directly affects production efficiency and safety. Existing access control equipment lacks the ability to recognize material characteristics in real time and cannot effectively distinguish key characteristics such as the composition, particle size and color of different types of materials. This directly leads to the misplacement of materials into the powder silo, increasing the risk of confusion, and may affect the accuracy of the proportion of building materials such as concrete. In addition, traditional access control devices have a low degree of automation and require manual, facial recognition, fingerprint recognition, card swiping, etc. to open the access control. Every time goods are transported, they must be transported by such methods, which is inefficient. When faced with high-intensity and high-efficiency production needs, they have great limitations. Summary of the invention

[0003] The purpose of the present invention is to provide a new access control device for a powder silo of a mixing station to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a new access control device for powder silo of a mixing station, comprising The door body is the entrance of the powder silo, a lock is arranged on one side of the door body, infrared sensors are arranged above and below the lock on one side of the door body, and the infrared sensors are used to detect whether the object has completely passed through the door body, and anti-pinch holes are opened on the top side and the bottom side of the door body; A conveyor platform is arranged in front of the door body, a conveyor path is provided on the top of the conveyor platform, and the conveyor path is used to guide and support the transport equipment to move to the door body along a predetermined path. A weighing device is provided at one end of the conveyor platform close to the door body, and the material is weighed by the weighing device; Laser scanners are installed on both sides of the conveyor platform to detect the composition characteristics of the materials; The control device is arranged on the front of the door body, and the opening and closing of the door body can be controlled by the control device. The control device is integrated with a face recognition module, including a camera, and the characteristic information of the face is captured by the camera. The anti-pinch device is arranged inside the door body, and the anti-pinch device includes a second cylinder and two anti-pinch rods. The anti-pinch rods are arranged in the inner cavity of the anti-pinch hole, and the anti-pinch rods can be controlled by the second cylinder to protrude from the inner cavity of the anti-pinch hole.

[0005] Preferably, a dust cover is provided on the outer side of the top of the control device, a glass block is provided on one side of the dust cover to prevent dust from adhering to the surface of the camera, a cleaning plate is provided on one side of the dust cover, a shooting port is provided on the surface of the cleaning plate at a corresponding position of the glass block, a flushing mechanism is provided on one side of the dust cover, and a cleaning mechanism is provided on the inner side of the dust cover.

[0006] Preferably, the flushing mechanism includes a first cylinder, an output end of the first cylinder is fixedly connected to a plunger, a pressure chamber is provided on one side of the dust cover, a connecting pipe is provided on one side of the pressure chamber, the connecting pipe is connected to an inner cavity of the pressure chamber, a nozzle is provided on the inner wall of the shooting port, the nozzle of the nozzle is directed toward the direction of the glass block, and the water outlet of the connecting pipe is connected to the nozzle through a micro water pipe.

[0007] Preferably, the cleaning mechanism includes a servo motor, a first gear is provided at the output end of the servo motor, a first rack is provided at the bottom of the first gear, the top surface of the first rack is meshed with the outer edge of the first gear, a fixed cover is provided at one end of the first rack, a second gear is provided in the inner cavity of the fixed cover, and one side of the second gear is connected to the cleaning brush through a connecting shaft.

[0008] Preferably, a second rack is provided on the top of the first gear, and the bottom surface of the second rack is meshed with the outer edges of the second gear and the first gear respectively.

[0009] Preferably, a pressure sensor is provided inside the connecting pipe, and the pressure inside the pressure chamber is detected by the pressure sensor. A solenoid valve is provided at the water outlet of the connecting pipe, and the water outlet is opened or closed by the solenoid valve.

[0010] Preferably, a transmission mechanism is provided at the output end of the second cylinder, and locking shafts are provided at the top and bottom of the transmission mechanism. An embedding groove is provided at the top of the anti-pinch rod, and the locking shaft is connected to the anti-pinch rod through the embedding groove. A spring is provided at one end of the anti-pinch rod, and the transmission mechanism includes a mounting frame, and a transmission column is provided in the inner cavity of the mounting frame, and the transmission column is fixedly connected to the output end of the second cylinder, and a connecting block is provided on both sides of the transmission column, one end of the connecting block is fixedly connected to the locking shaft, and the contact surface between the connecting block and the transmission column is set as mutually compatible inclined surfaces.

[0011] Preferably, pressure plates are provided at the corresponding ends of the conveying path and the door body, one side of the pressure plate is set at an oblique angle, and the pressure plate is used to allow the transportation equipment to enter the powder bin through the conveying path and the door body. A strength layer is embedded in the interior of the conveying platform, and a number of buffer devices are provided at the bottom of the strength layer, that is, below the interior of the conveying platform.

[0012] Preferably, a slide groove is provided on one side of the installation frame, a slide bar adapted to the inner wall of the slide groove is provided on one side of the linkage block, and the installation frame as a whole is divided into two parts and is installed and connected by bolts.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention sets a laser scanner in the access control device, captures the material feature information through the laser scanner, compares and analyzes it with the preset data in the database, quickly confirms the material type, ensures that only the correct material can enter the designated silo, realizes real-time and accurate identification of materials entering the access control area, and effectively avoids the risk of misplacement and confusion of materials; 2. The present invention controls the access control device in linkage with the weighing device. When the material is accurately measured in the weighing system and confirmed by the laser scanner, the access control system automatically opens without manual intervention, which greatly improves work efficiency and reduces the time for manual door opening. When facing high-intensity and high-efficiency production requirements, it greatly improves work efficiency; 3. The present invention provides an anti-pinch device and an infrared sensor on one side of the door body. When the door body is about to close, the infrared sensor will monitor the edge area of ​​the door body in real time. Once it is detected that an object (such as the hand, foot or any other obstacle of the staff) is about to be clamped, the anti-pinch device will be activated immediately to quickly and effectively prevent the door body from closing further, thus avoiding the occurrence of personal injury accidents and improving the safety level of the production environment; 4. Aiming at the influence of high dust environment in mixing station on camera clarity, the present invention provides a flushing device. When the camera image is polluted by dust, the spray is started to flush the glass block, and the cleaning mechanism is used to wipe and clean it, so as to ensure the normal operation of face recognition function. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A cross-sectional view of the middle conveyor platform; Figure 3 For the present invention Figure 1 Schematic diagram of the overall structure of the middle door body; Figure 4 For the present invention Figure 3 Schematic diagram of the overall structure of the anti-pinch device; Figure 5 For the present invention Figure 4 The overall structural diagram of the transmission mechanism; Figure 6 For the present invention Figure 3 The overall structure diagram of the control device; Figure 7 For the present invention Figure 6 A magnified view of the overall structure of the medium-length shot; Figure 8 For the present invention Figure 6 Schematic diagram of the overall structure of the middle flushing mechanism; Fig. 9 For the present invention Figure 6 Schematic diagram of the overall structure of the cleaning mechanism; In the figure: 1, door body; 11, lock; 12, infrared sensor; 13, anti-pinch hole; 2, conveyor platform; 21, conveyor path; 22, pressure plate; 23, strength layer; 231, weighing device; 24, buffer device; 3, laser scanner; 4, control device; 41, dust cover; 411, glass block; 42, cleaning plate; 43, shooting port; 431, nozzle; 44, camera; 45, cleaning mechanism; 451, servo motor; 452, first gear; 453, first rack ; 454, fixed cover; 455, second gear; 456, second rack; 457, cleaning brush; 46, flushing mechanism; 461, first cylinder; 462, plunger; 463, pressure chamber; 464, connecting pipe; 5, anti-pinch device; 51, second cylinder; 52, transmission mechanism; 521, mounting frame; 522, transmission column; 523, linkage block; 524, slide bar; 525, slide groove; 53, locking shaft; 54, anti-pinch rod; 541, embedded groove; 55, spring. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0016] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] See also Figure 1-9 The present invention provides a technical solution: a new access control device for a powder silo in a mixing station, comprising The door body 1 is the entrance of the powder silo. A lock buckle 11 is arranged on one side of the door body 1. An infrared sensor 12 is arranged above and below the lock buckle 11 on one side of the door body 1. The infrared sensor 12 detects whether an object has completely passed through the door body 1. Anti-pinch holes 13 are arranged on the top side and the bottom side of the door body 1. The conveyor platform 2 is arranged in front of the door body 1. A conveyor path 21 is provided on the top of the conveyor platform 2. The conveyor path 21 is used to guide and support the transport equipment to move along a predetermined path to the door body 1. A weighing device 231 is provided at one end of the conveyor platform close to the door body 1. The weighing device 231 is used to weigh the material. The laser scanner 3 is arranged on both sides of the conveying platform 2 and is used to detect the component characteristic information of the material; The control device 4 is arranged on the front of the door body 1. The door body 1 can be opened and closed by the control device 4. The control device 4 integrates a face recognition module, including a camera 44, and the feature information of the face is captured by the camera 44. The anti-pinch device 5 is arranged inside the door body 1. The anti-pinch device 5 includes a second cylinder 51 and two anti-pinch rods 54. The anti-pinch rods 54 are arranged in the inner cavity of the anti-pinch hole 13. The anti-pinch rods 54 can be controlled by the second cylinder 51 to protrude from the inner cavity of the anti-pinch hole 13.

[0018] In this embodiment, please refer to Figure 6-7 A dust cover 41 is provided on the outer side of the top of the control device 4, and a glass block 411 is provided on one side of the dust cover 41. The glass block 411 prevents dust from adhering to the surface of the camera 44. A cleaning plate 42 is provided on one side of the dust cover 41. A shooting port 43 is provided at the surface of the cleaning plate 42 corresponding to the glass block 411. A flushing mechanism 46 is provided on one side of the dust cover 41, and a cleaning mechanism 45 is provided on the inner side of the dust cover 41. In this embodiment, by providing the dust cover 41 and the glass block 411, dust is prevented from directly adhering to the surface of the camera 44, which is inconvenient to clean. At the same time, it is prevented that the cleaning fluid enters the interior of the control device 4 when cleaning the camera 44, causing damage to the equipment. At the same time, it is also prevented that dust, gravel and other debris cause damage to the display screen provided on the control device 4.

[0019] In this embodiment, please refer to Figure 7-8 The flushing mechanism 46 includes a first cylinder 461, an output end of the first cylinder 461 is fixedly connected to a plunger 462, a pressure chamber 463 is provided on one side of the dust cover 41, a connecting pipe 464 is provided on one side of the pressure chamber 463, the connecting pipe 464 is connected to the inner cavity of the pressure chamber 463, a nozzle 431 is provided on the inner wall of the shooting port 43, the nozzle of the nozzle 431 is directed toward the glass block 411, and the water outlet of the connecting pipe 464 is connected to the nozzle 431 through a micro-water pipe. In this embodiment, when the clarity of the image captured by the camera 44 decreases and the facial feature information cannot be recognized, the plunger 462 is driven to move forward by controlling the first cylinder 461 to increase the pressure in the inner cavity of the pressure chamber 463. The interior of the pressure chamber 463 is filled with cleaning liquid. Under the action of pressure, the cleaning liquid is transmitted to the interior of the nozzle 431 through the connecting pipe 464 and the micro-water pipe, and the pressurized cleaning liquid is sprayed out through the nozzle 431 to rinse the surface of the glass block 411.

[0020] In this embodiment, please refer to Fig. 9 The cleaning mechanism 45 includes a servo motor 451, a first gear 452 is provided at the output end of the servo motor 451, a first rack 453 is provided at the bottom of the first gear 452, the top surface of the first rack 453 is meshed with the outer edge of the first gear 452, a fixed cover 454 is provided at one end of the first rack 453, a second gear 455 is provided in the inner cavity of the fixed cover 454, and one side of the second gear 455 is connected to the cleaning brush 457 through a connecting shaft. In this embodiment, when the glass block 411 is rinsed with cleaning liquid, the first gear 452 is controlled to rotate repeatedly by the servo motor 451, and the first gear 452 is repeatedly rotated to drive the first rack 453 to move repeatedly, and the fixed cover 454 is moved back and forth by the movement of the first rack 453. The fixed cover 454 moves back and forth, so that the second gear 455 drives the cleaning brush 457 to move back and forth, and the surface of the glass block 411 is rubbed by the repeated movement of the cleaning brush 457, so that the stains washed are cleaned.

[0021] In this embodiment, please refer to Fig. 9 A second rack 456 is provided on the top of the first gear 452, and the bottom surface of the second rack 456 is respectively meshed with the second gear 455 and the outer edge of the first gear 452. In this embodiment, when the first gear 452 rotates continuously within a range, the second rack 456 is driven to move back and forth. Since the bottom surface of the second rack 456 is meshed with the second gear 455, the second rack 456 drives the cleaning brush 457 to rotate when it moves. In cooperation with the first rack 453, the cleaning brush 457 rotates and moves back and forth, thereby enhancing the cleaning ability of the glass block 411.

[0022] In this embodiment, please refer to Figure 8 A pressure sensor is provided inside the connecting pipe 464, and the pressure inside the pressure chamber 463 is detected by the pressure sensor. A solenoid valve is provided at the water outlet of the connecting pipe 464, and the water outlet is opened or closed by the solenoid valve. In this embodiment, when the first cylinder 461 pushes the plunger 462, the internal air pressure of the pressure chamber 463 increases. After the pressure sensor detects the increase in air pressure, the solenoid valve is controlled to open by the control device 4, so that water flows through the connecting pipe 464 and the micro-water pipe into the nozzle 431. This design prevents the internal cleaning liquid of the pressure chamber 463 from leaking when the pressure chamber 463 is idle.

[0023] In this embodiment, please refer to Figure 4-5A transmission mechanism 52 is provided at the output end of the second cylinder 51, and a locking shaft 53 is provided at the top and bottom of the transmission mechanism 52. An embedding groove 541 is provided at the top of the anti-clamp rod 54, and the locking shaft 53 is connected to the anti-clamp rod 54 through the embedding groove 541. A spring 55 is provided at one end of the anti-clamp rod 54. The transmission mechanism 52 includes a mounting frame 521, and a transmission column 522 is provided in the inner cavity of the mounting frame 521. The transmission column 522 is fixedly connected to the output end of the second cylinder 51, and a linking block 523 is provided on both sides of the transmission column 522. One end of the linking block 523 is fixedly connected to the locking shaft 53, and the contact surface of the linking block 523 and the transmission column 522 is set to be compatible with each other. With an inclined surface, in this embodiment, the transmission column 522 is driven to move backward by the second cylinder 51, so that the transmission column 522 pushes the two linkage blocks 523 to make them approach each other along the inner wall of the mounting frame 521, so that the two locking shafts 53 are approached to each other, and the locking shafts 53 are separated from the inner cavity of the embedded groove 541. Under the elastic force of the spring 55, the anti-pinch rod 54 is popped out to prevent the door body 1 from closing. When restoring, the anti-pinch rod 54 is pressed to make it enter the inner cavity of the anti-pinch hole 13, and the transmission mechanism 52 is driven forward by the second cylinder 51, so that the two locking shafts 53 move back and forth, and the locking shafts 53 enter the inner cavity of the embedded groove 541 to fix the anti-pinch rod 54.

[0024] In this embodiment, please refer to Figure 1-2 A pressure plate 22 is provided at the corresponding end of the conveying path 21 and the door body 1, and one side of the pressure plate 22 is set at an oblique angle. The pressure plate 22 is used to allow the transportation equipment to enter the powder bin through the conveying path 21 and the door body 1. A strength layer 23 is embedded in the interior of the conveying platform 2, and a number of buffer devices 24 are provided at the bottom of the strength layer 23, that is, at the bottom of the interior of the conveying platform 2. In this embodiment, by setting the pressure plate 22 at an oblique angle, it is convenient for the transportation device to pass through the oblique angle of the pressure plate 22 through the door body 1 and enter the powder bin. By providing a strength layer 23 made of steel, the overall structural strength of the conveying platform 2 is significantly enhanced, so that it can withstand a larger load. By providing a buffer device 24 at the key supporting point of the conveying platform 2, the vibration and impact force generated by the transportation equipment when passing through the conveying path 21 are effectively reduced.

[0025] In this embodiment, please refer to Figure 5 A slide groove 525 is provided on one side of the mounting frame 521, and a slide bar 524 adapted to the inner wall of the slide groove 525 is provided on one side of the linkage block 523. The mounting frame 521 is divided into two parts as a whole and is installed and connected by bolts. In this embodiment, when the linkage block 523 is subjected to the thrust of the transmission column 522, the transmission column 522 will only move along the vertical direction of the transmission column 522 through the positioning of the slide bar 524 and the slide groove 525 to avoid its lateral movement. At the same time, the mounting frame 521 is connected and assembled by bolts. When the components in the mounting frame 521 are worn, it is easy to replace and repair.

[0026] Working principle of the present invention: Step 1: In the mixing station, the material is transported to the door body 1 through the conveyor 21 set on the conveyor 2. When the transport equipment arrives at the designated position, the weighing device 231 located under the conveyor 21 is immediately started to accurately weigh the material, record the weight of the material, and transmit the data to the control device 4. At the same time, the laser scanners 3 located on both sides of the conveyor 2 are quickly started. When the laser beam is irradiated on the surface of the material, part of the laser will be reflected back by the material. The reflected laser contains information such as the shape, texture, color and composition of the surface of the material and is transmitted to the control device. The control device analyzes its composition, particle size, color and other characteristic information. This information is then compared with the pre-entered material database to confirm whether the material type is correct. Once the scanning result matches the database and the material is confirmed to be correct, the control device 4 controls the opening of the door body 1. The pulley set at the bottom of the door body 1 slides the door body 1 horizontally through the slide rail to open the door. The infrared sensor 12 detects the passage of goods and personnel. When the goods and personnel pass through the door body 1 to enter the silo, the control device 4 controls the door body 1 to close automatically.

[0027] Step 2: When the door 1 is about to close, the infrared sensor 12 detects the closed side of the door. The infrared sensor 12 monitors the edge area of ​​the door in real time by emitting infrared beams and receiving their reflected signals. These infrared beams form a detection area in space. When the door is about to close, the infrared sensor remains active and continues to emit infrared light to the area. If any object such as the hands, feet or other obstacles of the staff enter the detection area, the infrared light will be reflected back by the object and received by the sensor. The circuit inside the sensor analyzes the intensity and time difference of the reflected light to determine the existence and location of the object. Once it is detected that an object is about to be clamped by the door body, the sensor will immediately send a signal to the control device, which starts the second cylinder 51 through the control device 4, and pulls the transmission column 522 through the output end of the second cylinder 51 to move it backward. Since the two sides of the transmission column 522 are provided with linkage blocks 523 that cooperate with the inclined surfaces, the transmission column 522 moves backward, so that the two linkage blocks 523 move closer to each other along the inner cavity of the installation frame 521, thereby driving the two locking shafts 53, so that one end of the locking shaft 53 is separated from the inner cavity of the embedded groove 541, and the fixing of the anti-clamping rod 54 is stopped, so that the spring 55 loses pressure and rebounds, and the anti-clamping rod 54 is quickly ejected through the anti-clamping hole 13, against the door edge, and the closing action of the door body 1 is urgently stopped, thereby effectively avoiding the occurrence of clamping accidents;

[0028] Step three, since the control device 4 is provided with a camera 44 for facial unlocking, in the environment of the material distribution bin, there is a lot of dust, so the camera 44 is protected from dust by the glass block 411, and the surface of the glass block 411 is easily contaminated by dust, which affects the correct capture of facial features. When the clarity of the image captured by the camera 44 is reduced, the plunger 462 is pushed forward by the output end of the first cylinder 461, so that the inner cavity space of the pressure bin 463 gradually becomes smaller and the pressure gradually increases. When the pressure sensor provided in the connecting pipe 464 detects that the pressure value becomes larger, the solenoid valve provided at the connecting pipe 464 is opened by the control device, so that the cleaning liquid in the inner cavity of the pressure bin 463 is discharged into the nozzle 431 through the connecting pipe 464 and the micro-water pipe under the action of pressure, and the cleaning liquid is sprayed out through the nozzle 431, so that the pressurized cleaning liquid is applied to the glass The surface of the glass block 411 is rinsed, and the servo motor 451 is started. The first gear 452 is controlled to rotate through the output end of the servo motor 451. Since the first gear 452 is respectively provided with a first rack 453 and a second rack 456 that mesh with each other on the upper and lower sides, when the first gear 452 rotates, it drives the first rack 453 and the second rack 456 to move, and the fixed cover 454 is driven to move through the movement of the first rack 453, and the cleaning brush 457 is driven to move through the movement of the fixed cover 454, and the second rack 456 is moved to control the second gear 455 to rotate, and the cleaning brush 457 is driven to rotate through the rotation of the second gear 455, so that the cleaning brush 457 rotates and moves back and forth, rubbing the surface of the glass block 411 to brush off the rinsed stains. When the glass block 411 is clean, a clear image of the human body is captured by the camera 44.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. The present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A new access control device for powder silo in mixing station, characterized by: include A door body (1), the door body (1) being an entrance to a powder bin, a lock catch (11) being provided on one side of the door body (1), infrared sensors (12) being provided above and below the lock catch (11) on one side of the door body (1), the infrared sensors (12) being used to detect whether an object has completely passed through the door body (1), and anti-pinch holes (13) being provided on the top side and the bottom side of the door body (1); A conveying platform (2) is arranged in front of the door body (1), a conveying path (21) is provided on the top of the conveying platform (2), the conveying path (21) is used to guide and support the transport equipment to move along a predetermined path to the door body (1), a weighing device (231) is provided at one end of the conveying platform close to the door body (1), and the material is weighed by the weighing device (231); A laser scanner (3) is arranged on both sides of the conveying platform (2) and is used to detect component characteristic information of the material; A control device (4) is arranged on the front side of the door body (1), and the opening and closing of the door body (1) can be controlled by the control device (4). The control device (4) is integrated with a face recognition module, which includes a camera (44), and the feature information of the face is captured by the camera (44); an anti-pinch device (5) is arranged inside the door body (1), and the anti-pinch device (5) includes a second cylinder (51) and two anti-pinch rods (54). The anti-pinch rods (54) are arranged in the inner cavity of the anti-pinch hole (13), and the anti-pinch rods (54) can be controlled by the second cylinder (51) to protrude from the inner cavity of the anti-pinch hole (13).

2. According to claim 1, a new access control device for powder silo of a mixing station is characterized by: A dust cover (41) is arranged on the outer side of the top of the control device (4); a glass block (411) is arranged on one side of the dust cover (41); the glass block (411) prevents dust from adhering to the surface of the camera (44); a cleaning plate (42) is arranged on one side of the dust cover (41); a shooting port (43) is provided on the surface of the cleaning plate (42) at a position corresponding to the glass block (411); a flushing mechanism (46) is arranged on one side of the dust cover (41); and a cleaning mechanism (45) is arranged on the inner side of the dust cover (41).

3. The new access control device for powder silo of a mixing station according to claim 2 is characterized by: The flushing mechanism (46) comprises a first cylinder (461), the output end of the first cylinder (461) being fixedly connected to a plunger (462); a pressure chamber (463) is provided on one side of the dust cover (41); a connecting pipe (464) is provided on one side of the pressure chamber (463); the connecting pipe (464) is connected to the inner cavity of the pressure chamber (463); a nozzle (431) is provided on the inner wall of the shooting port (43); the nozzle of the nozzle (431) faces the direction of the glass block (411); and the water outlet of the connecting pipe (464) is connected to the nozzle (431) via a micro-water pipe.

4. The new access control device for powder silo of a mixing station according to claim 2 is characterized by: The cleaning mechanism (45) comprises a servo motor (451), the output end of the servo motor (451) is provided with a first gear (452), the bottom of the first gear (452) is provided with a first rack (453), the top surface of the first rack (453) is meshed with the outer edge of the first gear (452), one end of the first rack (453) is provided with a fixed cover (454), the inner cavity of the fixed cover (454) is provided with a second gear (455), and one side of the second gear (455) is connected to a cleaning brush (457) via a connecting shaft.

5. The new access control device for powder silo of a mixing station according to claim 4 is characterized by: A second rack (456) is provided on the top of the first gear (452), and the bottom surface of the second rack (456) is meshed with the outer edges of the second gear (455) and the first gear (452) respectively.

6. The new access control device for powder silo of a mixing station according to claim 3 is characterized by: A pressure sensor is provided inside the connecting pipe (464), and the pressure inside the pressure chamber (463) is detected by the pressure sensor. A solenoid valve is provided at the water outlet of the connecting pipe (464), and the water outlet is opened or closed by the solenoid valve.

7. The new access control device for powder silo of a mixing station according to claim 1 is characterized by: The output end of the second cylinder (51) is provided with a transmission mechanism (52), the top and bottom of the transmission mechanism (52) are both provided with a locking shaft (53), the top of the anti-clamping rod (54) is provided with an embedding groove (541), the locking shaft (53) is connected to the anti-clamping rod (54) through the embedding groove (541), one end of the anti-clamping rod (54) is provided with a spring (55), the transmission mechanism (52) comprises a mounting frame (521), the inner cavity of the mounting frame (521) is provided with a transmission column (522), the transmission column (522) is fixedly connected to the output end of the second cylinder (51), a linking block (523) is provided on both sides of the transmission column (522), one end of the linking block (523) is fixedly connected to the locking shaft (53), and the contact surface between the linking block (523) and the transmission column (522) is provided as mutually compatible inclined surfaces.

8. The new access control device for powder silo of a mixing station according to claim 1 is characterized by: A pressure plate (22) is provided at the corresponding end of the conveying path (21) and the door body (1), one side of the pressure plate (22) being arranged at an oblique angle, and the pressure plate (22) is used to allow the transport equipment to enter the powder bin through the conveying path (21) and the door body (1), and a strength layer (23) is embedded inside the conveying platform (2), and a plurality of buffer devices (24) are provided at the bottom of the strength layer (23), i.e., below the inside of the conveying platform (2).

9. The new access control device for powder silo of a mixing station according to claim 7 is characterized by: A slide groove (525) is provided on one side of the installation frame (521), and a slide bar (524) adapted to the inner wall of the slide groove (525) is provided on one side of the linkage block (523). The installation frame (521) is divided into two parts as a whole and is installed and connected by bolts.

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