Powder dispensing device

Abstract

The application relates to the field of waterproof roll production, and discloses a powder feeding device for the production of waterproof rolls, which comprises a feeding hopper, a first driving element, an arch breaking assembly and a scraping assembly. The feeding hopper is arranged in an inverted conical shape and connected to a rack. A sealing cover is connected to the feeding inlet of the feeding hopper. The first driving element is connected to the sealing cover and has a rotating shaft extending into the feeding hopper. The arch breaking assembly is arranged in the feeding hopper and comprises an inclined support rod and an arch breaking rod. The inclined support rod is connected to the rotating shaft and arranged in an inclined manner along the inner wall of the feeding hopper. The arch breaking rod is arranged along the length direction of the inclined support rod and faces the shaft center of the feeding hopper. The rotating shaft is used for rotating under the driving of the first driving element and driving the inclined support rod and the arch breaking rod to rotate. The scraping assembly is connected to the arch breaking assembly and used for scraping the powder on the inner wall of the feeding hopper. The powder feeding device not only reduces the production interruption and manual cleaning requirement, but also improves the production efficiency and material utilization rate of the waterproof rolls.

Description

Technical Field

[0001] This application belongs to the field of waterproof membrane production technology, specifically relating to a powder feeding device. Background Technology

[0002] In the coatings production industry, the precise feeding and weighing of powder and granular raw materials is a crucial step in ensuring product quality. Currently, common feeding devices often employ a simple conical hopper combined with a mechanical gate structure, relying on the material's own weight to fall. In practical use, especially with coating raw materials that are prone to moisture absorption and adhesion, these devices generally present significant problems: materials easily form "bridging" or "arching" blockages inside the hopper, leading to interrupted or uneven feeding; simultaneously, materials tend to adhere to the inner wall of the hopper and the bottom outlet, causing residue and waste, further exacerbating flow problems. These blockages and adhesion issues heavily rely on manual intervention for unblocking or tapping, which is not only labor-intensive and poses safety hazards, but also leads to frequent production interruptions, low feeding efficiency, and makes continuous, stable, and automated production difficult to achieve. Utility Model Content

[0003] In view of at least one of the above-mentioned defects or deficiencies in the prior art, this application provides a powder feeding device to achieve mechanized arch breaking.

[0004] To achieve the above objectives, this application provides a powder feeding device for the production of waterproof membranes, the powder feeding device comprising: The feeding hopper is arranged in an inverted cone shape and connected to the frame, and a sealing cover is connected to the feeding port of the feeding hopper; The first driving component is connected to the sealing cover and has a rotating shaft that extends into the hopper; An arch-breaking assembly is disposed inside the hopper. The arch-breaking assembly includes a diagonal brace and an arch-breaking rod. The diagonal brace is connected to the rotating shaft and is inclined along the inner wall of the hopper. The arch-breaking rod is spaced apart along the length of the diagonal brace and faces the axis of the hopper. The rotating shaft is used to rotate under the drive of the first driving member and drive the diagonal brace and the arch-breaking rod to rotate. A scraping assembly, connected to the arch-breaking assembly, is used to scrape the powder on the inner wall of the hopper.

[0005] In some embodiments, the wiping assembly includes: A side scraper, one side of which is connected to the arch-breaking assembly, and the other side is used to contact the side wall of the hopper. The side scraper is used to scrape the powder on the side wall of the hopper. The bottom scraper is connected to the arch-breaking assembly on one side and is used to contact the bottom wall of the hopper on the other side. The bottom scraper is used to scrape the powder on the bottom wall of the hopper.

[0006] In some embodiments, the arch-breaking component further includes: A connecting crossbar is connected at one end to the rotating shaft and at the other end to the inclined support rod, extending towards the side wall of the hopper. The side scraper is connected to the inclined support rod, and the bottom scraper is connected to the connecting crossbar.

[0007] In some embodiments, a discharge port is provided at the center of the bottom of the hopper, and a vertically downward-facing discharge pipe is connected to the discharge port.

[0008] In some embodiments, the powder feeding device further includes: A spiral conveyor plate is connected to the rotating shaft and located inside the discharge pipe. The spiral conveyor plate is used to rotate under the drive of the rotating shaft so that the powder in the discharge pipe is spirally discharged.

[0009] In some embodiments, the arch-breaking component further includes: A stirring rod is connected to the rotating shaft. The stirring rod is located inside the hopper and is used to rotate with the rotating shaft to stir the powder in the hopper.

[0010] In some embodiments, the powder feeding device further includes: The second drive unit is connected to the frame, and the movable end of the second drive unit is connected to the sealing cover and is used to drive the sealing cover to lift and lower to open and close the feed port.

[0011] In some embodiments, the powder feeding device further includes: The weighing hopper is arranged in an inverted cone shape and connected to the frame. The weighing hopper is located below the feeding hopper and connects to the discharge pipe of the feeding hopper. A weighing sensor is connected to the bottom of the weighing hopper, and the weighing sensor is used to weigh the weighing hopper.

[0012] In some embodiments, the powder feeding device further includes: The unloading assembly includes an unloading gate hinged to the bottom of the weighing hopper and a third drive member connected to the unloading gate. The bottom of the weighing hopper is provided with a unloading port, and the third drive member is used to drive the unloading gate to rotate to open and close the unloading port.

[0013] In some embodiments, the powder feeding device further includes: A controller is connected to the frame and is electrically connected to the first drive unit. The controller is used to start and stop the first drive unit.

[0014] Through the above technical solution, the diagonal bracing and anti-arching rods of the anti-arching component continuously cut into the powder layer during rotation, breaking up the arches caused by electrostatic forces or humidity between the powder particles, ensuring smooth powder flow. Meanwhile, the scraping component rotates together with the anti-arching component to clean the inner wall, preventing powder adhesion and accumulation, thus significantly improving the uniformity and continuity of material feeding. Integrating the scraping and anti-arching functions into the same drive source avoids the need for separate drive devices, simplifies the structure, and reduces energy consumption and failure rate. This utility model's powder feeding device not only reduces production interruptions and the need for manual cleaning, but also improves the production efficiency and material utilization rate of waterproof membranes. Furthermore, its compact structure and efficient drive make it suitable for long-term stable operation in high-dust environments.

[0015] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram of the powder feeding device in this utility model; Figure 2 This is a schematic diagram showing the connection between the arch-breaking component and the scraping component in this utility model; Figure 3 This is a schematic diagram of the structure of the lower hopper in this utility model; Figure 4 A schematic diagram showing the opening of the sealing cover of the hopper in this utility model; Figure 5 This is a schematic diagram of the structure of the weighing hopper in this utility model.

[0017] Explanation of reference numerals in the attached figures Detailed Implementation

[0018] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0019] The present application will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0020] like Figure 1 and Figure 2As shown, this application provides a powder feeding device for the production of waterproof membrane. The powder feeding device includes a feeding hopper 1, a first driving member 2, an arch-breaking assembly 3, and a scraping assembly 4. The feeding hopper 1 is arranged in an inverted cone shape and connected to a frame 5. A sealing cover 12 is connected to the feeding port 11 of the feeding hopper 1. The first driving member 2 is connected to the sealing cover 12 and is connected to a rotating shaft 21 that extends into the feeding hopper 1. The arch-breaking assembly 3 is disposed in the feeding hopper 1 and includes a diagonal support rod 31 and an arch-breaking rod 32. The diagonal support rod 31 is connected to the rotating shaft 21 and is inclined along the inner wall of the feeding hopper 1. The arch-breaking rod 32 is spaced along the length of the diagonal support rod 31 and faces the axis of the feeding hopper 1. The rotating shaft 21 is used to rotate under the drive of the first driving member 2 and drive the diagonal support rod 31 and the arch-breaking rod 32 to rotate. The scraping assembly 4 is connected to the arch-breaking assembly 3 and is used to scrape the powder on the inner wall of the feeding hopper 1.

[0021] The powder feeding device includes an inverted cone-shaped hopper 1. The inverted cone shape facilitates the powder to fall by its own weight. The hopper 1 is fixed to the frame 5, and a sealing cover 12 is provided at the inlet 11 to achieve closed operation. A first driving component 2 is installed on the sealing cover 12 and located on top of the sealing cover 12. The first driving component 2 is placed outside the discharge hopper to avoid contaminating the powder. The first driving component 2 can drive a rotating shaft 21 that extends into the hopper 1 to rotate. The arch-breaking component 3 is integrated into the hopper 1 and consists of a diagonal brace 31 and an arch-breaking rod 32. The diagonal brace 31 is connected to the rotating shaft 21 and is arranged inclined along the inner wall of the hopper 1, while multiple... The arch-breaking rods 32 are arranged at intervals along the length of the diagonal support rods 31, all extending towards the axial direction of the hopper 1. Specifically, the arch-breaking rods 32 can be set vertically to the diagonal support rods 31, horizontally, or downward relative to the horizontal position. In the embodiment provided by this utility model, the arch-breaking rods 32 are set vertically to the diagonal support rods 31 and are located on the upper part of the diagonal support rods 31. Under the drive of the first driving member 2, the rotating shaft 21 synchronously drives the diagonal support rods 31 and the arch-breaking rods 32 to rotate. At the same time, the scraping assembly 4 is directly connected to the arch-breaking assembly 3 and rotates with it to scrape off the powder adhering to the inner wall of the hopper 1.

[0022] When the arch-breaking component 3 rotates, the diagonal brace 31 and the arch-breaking rod 32 continuously cut into the powder layer, breaking up the arches caused by electrostatic forces or humidity between the powder particles, ensuring smooth powder flow. Meanwhile, the scraping component 4 rotates together with the arch-breaking component 3 to clean the inner wall, preventing powder adhesion and accumulation, thus significantly improving the uniformity and continuity of material feeding. Integrating the scraping and arch-breaking functions into the same drive source avoids the need for separate drive devices, simplifies the structure, and reduces energy consumption and failure rate. This utility model's powder feeding device not only reduces production interruptions and manual cleaning needs but also improves the production efficiency and material utilization rate of waterproof membranes. Furthermore, its compact structure and efficient drive make it suitable for long-term stable operation in high-dust environments.

[0023] In some implementations, such as Figure 2 As shown, the scraping assembly 4 includes a side scraper 41 and a bottom scraper 42. One side of the side scraper 41 is connected to the arch-breaking assembly 3, and the other side is used to contact the side wall of the hopper 1. The side scraper 41 is used to scrape the powder on the side wall of the hopper 1. One side of the bottom scraper 42 is connected to the arch-breaking assembly 3, and the other side is used to contact the bottom wall of the hopper. The bottom scraper 42 is used to scrape the powder on the bottom wall of the hopper 1. One side of the side scraper 41 is connected to the rotating arch-breaking assembly 3, while the other side is in contact with the side wall of the hopper 1. The bottom scraper 42 is also connected to the arch-breaking assembly 3, but its other end is in contact with the bottom inner wall of the hopper 1, so that the scraping assembly 4 is driven by the rotating shaft 21 along with the arch-breaking rod 32 to achieve synchronous rotation. The side scraper 41 rotates close to the inclined side wall of the inverted conical hopper 1, continuously and effectively scraping away powder adhering to the inclined surface, preventing it from accumulating or forming a stagnant layer. The bottom scraper 42 is responsible for cleaning the powder around the bottom flat wall or the discharge port, avoiding the formation of dead corners. Through the combination of the side scraper 41 and the bottom scraper 42, the entire inner wall contact surface of the hopper 1 is scraped without dead corners, and the arch breaking function is carried out simultaneously. This not only solves the problem of material sticking to the inner wall and ensures the accuracy of powder ratio and smooth material discharge, but also eliminates the need for an additional drive device. The structure is simple and efficient, greatly reducing material waste and equipment maintenance requirements.

[0024] In some implementations, such as Figure 2 As shown, the arch-breaking assembly 3 also includes a connecting crossbar 33. One end of the connecting crossbar 33 is connected to the rotating shaft 21, and the other end is connected to the inclined support rod 31 and extends to the side wall of the lower hopper 1. A side scraper 41 is connected to the inclined support rod 31, and a bottom scraper 42 is connected to the connecting crossbar 33. Specifically, one end of the connecting crossbar 33 is directly fixed to the rotating shaft 21, and the other end extends towards the side wall of the lower hopper 1 and is connected to the inclined support rod 31, thereby constructing a stable rigid connection structure between the rotating shaft 21 and the inclined support rod 31. The side scraper 41 is connected to the inclined support rod 31 to be responsible for scraping the side wall. The length of the side scraper 41 can be consistent with the length of the inclined support rod 31, jointly covering the length range of the side wall. The bottom scraper 42 is set on the connecting crossbar 33 and is specifically used to clean the bottom wall of the lower hopper 1. The length of the bottom scraper 42 can be consistent with the length of the connecting crossbar 33, jointly covering the length range of the bottom wall of the lower hopper 1.

[0025] The connecting crossbar 33 pushes the mounting base of the diagonal brace 31 and the arch-breaking rod 32 on it outward from the surface of the rotating shaft 21, expanding the working radius of the arch-breaking assembly 3 in the core area of ​​powder accumulation, so that the arch-breaking rod 32 can act on a wider material layer and the arch-breaking efficiency is higher; moreover, the connecting crossbar 33 provides an installation position for the bottom scraper 42, so that the bottom scraper 42 can stably contact and scrape the powder in the bottom area of ​​the hopper 1, and work together with the side scraper 41 to achieve cleaning without dead corners; the coverage of arch breaking and the integrity of scraping are optimized, ensuring the high efficiency and stability of the entire feeding process.

[0026] In some implementations, such as Figure 3 As shown, a discharge port is located at the center of the bottom of the hopper 1, and a vertically downward-extending discharge pipe 13 is connected to the discharge port. The discharge port, located at the center of the bottom of the inverted conical structure of the hopper 1, is directly connected to a vertically downward-extending discharge pipe 13, ensuring that all powder collected at the bottom of the hopper 1 is discharged in an orderly manner through the central discharge port and the discharge pipe 13. The discharge pipe 13 organizes the powder flow path into a concentrated, vertical channel, utilizing the powder's own gravity to achieve concentrated and smooth discharge, effectively preventing powder from dispersing or remaining at other locations in the discharge hopper, providing a structural basis for precise control of the feed rate. Secondly, the vertical discharge pipe 13 serves as a guide and seal, guiding the powder accurately into downstream equipment, preventing dust from flying and spilling; on the other hand, the length of the discharge pipe 13 creates a slight material sealing effect, helping to stabilize the discharge flow and reduce discharge fluctuations caused by airflow. This ensures that the powder flows smoothly from the hopper wall to the bottom of the hopper and finally to the discharge port, thus guaranteeing the efficient, stable and clean operation of the entire feeding device.

[0027] In some implementations, such as Figure 3As shown, the powder feeding device also includes a spiral conveyor blade 14, which is connected to the rotating shaft 21 and located inside the discharge pipe 13. The spiral conveyor blade 14 rotates under the drive of the rotating shaft 21 to feed the powder in the discharge pipe 13 in a spiral manner. The rotating shaft 21 extends downward into the discharge pipe 13, and the spiral conveyor blade 14 is mounted on the rotating shaft 21 and precisely located inside the discharge pipe 13. When the first driving member 2 drives the rotating shaft 21 to rotate, the spiral conveyor blade 14 will rotate synchronously, and the spiral blade will generate a continuous downward axial thrust on the powder flowing through the discharge pipe 13, thereby achieving forced spiral conveying feeding. The rotation of the spiral conveyor plate 14 can actively push the powder, eliminating the phenomenon of powder sticking to the discharge pipe 13 due to moisture and particle characteristics, ensuring smooth and reliable discharge. The spiral conveyor plate 14 also realizes precise control of the discharge amount. By adjusting the rotation speed of the rotating shaft 21, the discharge amount per unit time can be easily controlled. The discharge can also be controlled by whether the rotating shaft 21 rotates or not, which provides a guarantee for the accurate proportion of waterproof membrane production and improves the automation level, batching accuracy and operation stability of the entire powder feeding device.

[0028] In some implementations, such as Figure 3 As shown, the anti-bridging component 3 also includes a stirring rod 34, which is connected to the rotating shaft 21. The stirring rod 34 is located inside the hopper 1 and rotates with the rotating shaft 21 to stir the powder inside the hopper 1. The stirring rod 34 is connected to the central rotating shaft 21 inside the hopper 1. When the first driving component 2 drives the rotating shaft 21 to rotate, the stirring rod 34 will rotate together with the anti-bridging component 3 and the scraping component 4, and stir the main powder in the central area of ​​the hopper 1 as a whole. The anti-bridging rod 32 focuses on solving the problem of arching close to the hopper wall, the scraping component 4 is responsible for cleaning the inner wall adhesion, while the stirring rod 34 penetrates deep into the powder and continuously breaks up any possible clumps through rotational shearing force, making the powder more loose and more fluid. In the embodiments of this application, two arch-breaking rods 32 are spaced apart on the upper part of the diagonal bracing rod 31, mainly used to clear the arch formed in the upper part of the feeding hopper 1. The stirring rod 34 is set in the middle and lower part of the feeding hopper 1, used to stir the powder in the middle and lower half of the feeding hopper 1, and works together with the arch-breaking rods 32 to cover all the internal space of the feeding hopper 1. Specifically, the stirring rod 34 can be a spiral stirring blade, a wave-shaped blade, or a straight blade, and multiple branches are set on the straight stirring rod 34 to achieve multi-directional stirring and make the powder more uniform. This not only prevents the formation of material arches in advance, but also makes the density and flow rate of the powder more uniform during the falling process, providing a stable and uniform material source for the spiral conveyor plate 14 in the discharge pipe 13, improving the stability and metering accuracy of the entire feeding device, and ensuring the accuracy of the production ratio of waterproof membrane.

[0029] In some implementations, such as Figure 4 As shown, the powder feeding device also includes a second driving component 51, which is connected to the frame 5. The movable end of the second driving component 51 is connected to the sealing cover 12 and is used to drive the sealing cover 12 to lift and lower to open and close the feed inlet 11. The second driving component 51 is fixed to the frame 5, and its movable end is connected to the sealing cover 12. The second driving component 51 can be a hydraulic cylinder, and the telescopic end of the hydraulic cylinder is connected to the sealing cover 12. The second driving component 51 can directly drive the vertical lifting and lowering movement of the sealing cover 12, thereby realizing the automatic opening and closing of the feed inlet 11.

[0030] Specifically, such as Figure 1 and Figure 4 As shown, the powder feeding device also includes a feed pipe 52 and a feed pump 53. The feed pump 53 pumps the upstream powder into the hopper 1 through the feed pipe 52. The feed pipe 52 extends into the hopper 1 when the sealing cover 12 rises, i.e., when the feed inlet 11 opens, to transport the powder into the hopper 1. When feeding is required, the second drive unit 51 lifts the sealing cover 12 and opens the feed inlet 11. After feeding is completed, the feed pipe 52 is removed, and the sealing cover 12 closes, effectively preventing dust from escaping and ensuring a clean working environment and production safety. This automated opening and closing method not only improves operating efficiency and avoids the uncertainty of manual operation, but more importantly, it ensures that the powder is not easily affected by moisture. At the same time, it creates a relatively closed space inside the hopper 1 during stirring and arch breaking, improving the overall environmental friendliness and operational reliability of the equipment.

[0031] In some implementations, such as Figure 5 As shown, the powder feeding device also includes a weighing hopper 6 and a weighing sensor 7. The weighing hopper 6 is inverted conical in shape and connected to the frame 5. The weighing hopper 6 is located below the feeding hopper 1 and connects to the discharge pipe 13 of the feeding hopper 1. The weighing sensor 7 is connected to the bottom of the weighing hopper 6 and is used to weigh the hopper 6. Specifically, the weighing hopper 6 is also inverted conical in shape. The weighing hopper 6 is fixed to the frame 5 and precisely located directly below the feeding hopper 1. It has a feed hole 61 at its upper part. The diameter of the feed hole 61 can be adapted to the outer diameter of the feeding pipe. The feeding pipe passes directly through the feed hole 61 to extend into the weighing hopper 6, conveying all the powder into the weighing hopper 6. At the bottom of the weighing hopper 6, the weighing sensor 7 is connected. This sensor can measure the total weight of the weighing hopper 6 and the powder inside it in real time and accurately. The weighing sensor 7 can monitor and provide feedback on the weight of the powder falling into the weighing hopper 6 in real time. When the weight reaches the preset value, it can immediately send a signal to stop feeding. This not only achieves batch, high-precision quantitative feeding, ensuring the absolute accuracy of the waterproof membrane production formula ratio, but also changes the rough feeding mode that relies on experience or time estimation. The seamless integration of feeding, arch breaking, conveying and weighing functions constitutes a complete automated batching unit, improving the consistency of product quality and the level of intelligence in the production process.

[0032] In some implementations, such as Figure 5 As shown, the powder feeding device also includes a discharge assembly, which includes a discharge gate 62 hinged to the bottom of the weighing hopper 6 and a third drive member 63 connected to the discharge gate 62. The bottom of the weighing hopper 6 is provided with a discharge port, and the third drive member 63 is used to drive the discharge gate 62 to rotate to open and close the discharge port. The discharge assembly includes a discharge gate 62 hinged to the discharge port at the bottom of the weighing hopper 6, and a third drive member 63 directly connected to and driving the discharge gate 62 to rotate. The third drive member 63 can also be a hydraulic cylinder, with its movable end connected to the discharge gate 62. By pushing or pulling the discharge gate 62, the discharge gate 62 is driven to rotate around the hinge point, thereby realizing the opening and closing of the discharge port. When the weighing sensor 7 detects that the powder in the weighing hopper 6 has reached the preset weight, it can instruct the third drive component 63 to quickly open the discharge gate 62, rapidly discharging the batch of powder that has been weighed to the next process. After unloading, the drive component immediately closes the discharge gate 62, preparing for the next receiving and weighing. This automated opening and closing control not only improves batching efficiency and ensures production rhythm, but more importantly, its sealed operation effectively prevents dust from escaping at the moment of unloading, ensuring a clean working environment. At the same time, the discharge gate 62, controlled by the drive component, can ensure the sealing when closed, preventing leakage, and is linked with the feeding and weighing functions to form a highly efficient, accurate, and environmentally friendly automated batching unit.

[0033] In some embodiments, the powder feeding device further includes a controller 8, which is connected to the frame 5 and electrically connected to the first drive component 2. The controller 8 is used to start and stop the first drive component 2. The controller 8 is fixed to the frame 5 and connected to the first drive component 2 via electrical wiring, enabling the controller 8 to directly control the start and stop of the first drive component 2 by sending electrical signals, thereby remotely controlling the core mixing and conveying actions of the entire feeding device. Simultaneously, the controller 8 is also connected to the second drive component 51, the third drive component 63, and the weighing sensor 7, and controls the start and stop of the first drive component 2, the second drive component 51, and the third drive component 63 based on the values ​​from the weighing sensor 7.

[0034] The controller 8 eliminates the need for manual on-site operation of the powder feeding device, allowing for precise control of feeding start and stop based on a preset program or feedback signals from the weighing sensor 7. For example, when feeding is required, the controller 8 activates the first drive component 2, driving the arch-breaking assembly 3, the scraping assembly, and the spiral conveyor 14. When the weighing sensor 7 detects that the powder has reached the set weight, the controller 8 immediately stops the first drive component 2 to halt feeding into the discharge hopper, achieving precise quantitative control. Subsequently, the controller 8 controls the extension and retraction of the third drive component 63 to open the discharge gate 62, allowing the raw material to be smoothly discharged from the weighing hopper 6, completing the unloading process after weighing. The controller 8 not only significantly improves operational convenience and production efficiency but also lays the core foundation for the coordinated control of the entire feeding system with other processes, achieving precise batching, reducing human error, and ensuring production continuity and stability.

[0035] Specifically, such as Figure 1 and Figure 5 As shown, the frame 5 includes a first mounting frame 54 and a second mounting frame 55. The first mounting frame 54 is used to install the feeding hopper 1, and the second mounting frame 55 is used to install the weighing hopper 6. The weighing hopper 6 is externally connected to an annular platform 56. Multiple support columns 57 are connected between the annular platform 56 and the second mounting frame 55. The multiple support columns 57 are evenly spaced along the edge of the annular platform 56, and the weighing sensor 7 is installed on the top of the multiple support columns 57. The annular platform 56, which is fixedly sleeved on the outer wall of the weighing hopper 6, can evenly transfer the weight of the weighing hopper 6 to the multiple weighing sensors 7 installed at its lower end, so that the weighing sensor 7 can stably receive the weight signal transmitted by the weighing hopper 6. When the powder enters the weighing hopper 6 from the discharge pipe 13, the weighing sensor 7 will convert the detected weight signal into an electrical signal and transmit it to the controller 8 which is electrically connected to it. The controller 8 can receive and process the electrical signal in real time to monitor the weight of the powder in the weighing hopper 6 and provide data basis for subsequent control of the feeding amount. The second mounting bracket 55 also has a material passage hole 551, which is aligned with the discharge port to allow powder to pass through and enter downstream equipment. The third drive component 63 can be hinged to the inner wall of the material passage hole 551 to facilitate adjustment of the discharge gate 62 and thus the size of the discharge port. At the same time, multiple support columns 57 raise the weighing hopper 6, creating a certain distance between the weighing hopper 6 and the second mounting bracket 55, providing rotation space for the discharge gate 62.

[0036] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A powder dispensing device for the production of a waterproofing membrane, characterized in that, The powder feeding device includes: The feeding hopper (1) is set in an inverted cone shape and connected to the frame (5). A sealing cover (12) is connected to the feeding port (11) of the feeding hopper (1). The first driving component (2) is connected to the sealing cover (12) and has a rotating shaft (21) that extends into the hopper (1). An arch-breaking assembly (3) is disposed inside the hopper (1). The arch-breaking assembly (3) includes a diagonal brace (31) and an arch-breaking rod (32). The diagonal brace (31) is connected to the rotating shaft (21) and is inclined along the inner wall of the hopper (1). The arch-breaking rod (32) is spaced along the length of the diagonal brace (31) and faces the axis of the hopper (1). The rotating shaft (21) is used to rotate under the drive of the first driving member (2) and drive the diagonal brace (31) and the arch-breaking rod (32) to rotate. The scraping component (4) is connected to the arch-breaking component (3) and is used to scrape the powder on the inner wall of the hopper (1).

2. The powder dispensing device of claim 1, wherein, The scraping assembly (4) includes: The side scraper (41) is connected to the arch breaking assembly (3) on one side and is used to contact the side wall of the hopper (1) on the other side. The side scraper (41) is used to scrape the powder on the side wall of the hopper (1). The bottom scraper (42) is connected to the arch-breaking assembly (3) on one side and is used to contact the bottom wall of the hopper on the other side. The bottom scraper (42) is used to scrape the powder on the bottom wall of the hopper (1).

3. The powder dispensing device of claim 2, wherein, The arch-breaking component (3) also includes: A connecting crossbar (33) is connected at one end to the rotating shaft (21) and at the other end to the inclined support rod (31) and extends toward the side wall of the hopper (1). The side scraper (41) is connected to the inclined support rod (31) and the bottom scraper (42) is connected to the connecting crossbar (33).

4. The powder dispensing device according to any one of claims 1 to 3, characterized in that The bottom center of the hopper (1) is provided with a discharge port, and a vertically downward discharge pipe (13) is connected to the discharge port.

5. The powder dispensing device of claim 4, wherein, The feeding hopper (1) also includes: The spiral conveyor plate (14) is connected to the rotating shaft (21) and located inside the discharge pipe (13). The spiral conveyor plate (14) is used to rotate under the drive of the rotating shaft (21) so that the powder in the discharge pipe (13) is spirally discharged.

6. The powder dispensing device according to any one of claims 1 to 3, wherein The arch-breaking component (3) also includes: A stirring rod (34) is connected to the rotating shaft (21). The stirring rod (34) is located inside the hopper (1) and is used to rotate with the rotating shaft (21) to stir the powder in the hopper (1).

7. The powder dispensing device according to any one of claims 1 to 3, wherein The powder feeding device further includes: The second drive unit (51) is connected to the frame (5). The movable end of the second drive unit (51) is connected to the sealing cover (12) and is used to drive the sealing cover (12) to lift and lower to open and close the feed port (11).

8. The powder dispensing device according to any one of claims 1 to 3, wherein The powder feeding device further includes: The weighing hopper (6) is arranged in an inverted cone shape and connected to the frame (5). The weighing hopper (6) is located below the feeding hopper (1) and is connected to the discharge pipe (13) of the feeding hopper (1). A weighing sensor (7) is connected to the bottom of the weighing hopper (6) and is used to weigh the weighing hopper (6).

9. The powder dispensing device of claim 8, wherein, The weighing hopper (6) also includes: The unloading assembly includes an unloading gate (62) hinged to the bottom of the weighing hopper (6) and a third drive member (63) connected to the unloading gate (62). The bottom of the weighing hopper (6) is provided with an unloading port. The third drive member (63) is used to drive the unloading gate (62) to rotate to open and close the unloading port.

10. The powder dispensing device according to any one of claims 1 to 3, wherein The powder feeding device further includes: A controller (8) is connected to the frame (5). The controller (8) is electrically connected to the first drive unit (2). The controller (8) is used to start and stop the first drive unit (2).

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