Powder discharging device based on multi-stage stock bin, arch breaking mechanism and weighing module

Abstract

The invention belongs to the technical field of nuclear power, and particularly relates to a powder discharging device based on a multi-stage stock bin, an arch breaking mechanism and a weighing module. According to the device disclosed by the invention, the powder bin mechanism, the plurality of powder feeding mechanisms and the plurality of powder weighing and overturning mechanisms are closely matched, and a multi-station synchronous working design is adopted, so that parallel feeding, weighing and overturning of powder are realized, a plurality of production steps are changed into parallel connection from series connection, the total time of single-time discharging circulation is greatly shortened, and the production efficiency is improved. Therefore, on the premise of ensuring high precision, the overall production efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of industrial automation control, and particularly relates to a powder discharging device based on a multi-stage material bin, an arch breaking mechanism and a weighing module. BACKGROUND

[0002] In the related art, due to high standards of production, it is necessary to improve production efficiency under the premise of ensuring that a certain amount of powder is added to the product. At present, the control of the powder content in the process method is controlled in the weight level as the optimal solution, so the device is designed by adopting the idea of the multi-stage material bin, the arch breaking mechanism and the weighing module. However, due to the small particle size of the powder, poor flowability and easy absorption of moisture to cause adhesion, the powder supports each other to form an arch structure inside the material bin, and cannot flow and discharge naturally. Based on the above analysis, the powder discharging device based on the multi-stage material bin, the arch breaking mechanism and the weighing module is designed to improve the production efficiency under the premise of the quantitative weighing of the powder. SUMMARY

[0003] In order to overcome the problems in the related art, a powder discharging device based on a multi-stage material bin, an arch breaking mechanism and a weighing module is provided.

[0004] According to an aspect of the embodiments of the present disclosure, a powder discharging device based on a multi-stage material bin, an arch breaking mechanism and a weighing module is provided, which comprises a powder bin mechanism, a plurality of powder feeding mechanisms and a plurality of powder weighing and overturning mechanisms.

[0005] The powder bin mechanism comprises a powder bin, a disturbance screw rod arranged in the powder bin, a material level sensor for detecting the material level in the powder bin, a disturbance motor for driving the disturbance screw rod, and a distribution motor and a screw; the material level sensor is configured to communicate with an external feeding system to control the feeding start and stop of the powder bin;

[0006] Each powder feeding mechanism comprises a servo motor, a feeding port, a disturbance motor, a feeding bin, a material level detection sensor and a discharge port; the feeding port is connected to the feeding bin through a pipeline; the material level detection sensor is used to detect the powder material level in the feeding bin and control the discharge of the feeding bin; the servo motor is used to drive the discharge screw rod; the disturbance motor is used to drive the scraper to break the arch of the powder in the feeding bin;

[0007] Each powder weighing and overturning mechanism corresponds to one powder feeding mechanism, and each powder weighing and overturning mechanism comprises a servo motor, a gear and a rack, a weighing sensor, a weighing amount cup and a material receiving bowl, and a platform is used to support each powder weighing and overturning mechanism.

[0008] The servo motor drives the turnover of the weighing cup and the weighing sensor for detecting the weight of the weighing cup, and the receiving bowl is used for receiving the powder unloaded from the weighing cup.

[0009] In a possible implementation, the disturbance screw in the powder bin mechanism is configured to rotate in the powder bin to achieve uniform powder discharge and effectively avoid the formation of powder arches.

[0010] In a possible implementation, the scraper in the powder feeding mechanism is continuously driven by the disturbance motor during the quantitative weighing and discharging process to break the arch of the powder in the feeding bin.

[0011] In a possible implementation, the control process of the powder feeding mechanism includes that the control system controls the servo motor and the discharging screw according to a target weight value, adopts a first feeding speed feeding mode at the initial stage of feeding, and switches to a second feeding speed feeding mode when the weight approaches the target value; the first feeding speed is greater than the second feeding speed, and the PLC reads the weight value of the weighing sensor in real time to form a feedback control.

[0012] In a possible implementation, the turnover action of the powder weighing turnover mechanism is configured such that when the weight of the powder in each weighing cup reaches a set range, the servo motor acts synchronously to simultaneously pour the powder in each weighing cup into the respective receiving bowl through the gear and rack.

[0013] In a possible implementation, the level sensor of the powder bin mechanism includes a high-level sensor and a low-level sensor; when the low-level sensor sends a signal, the external pipe chain conveyor is triggered to feed the powder bin; when the high-level sensor sends a signal, the external pipe chain conveyor is triggered to stop feeding, and the high-level sensor is located above the low-level sensor.

[0014] In a possible implementation, the level detection sensor of the powder feeding mechanism sends a signal to the powder bin mechanism to drive the powder bin mechanism to discharge when detecting that the level in the mechanism is low, and sends a signal to stop the powder bin mechanism from discharging when detecting that the level reaches the high level.

[0015] In a possible implementation, the distribution motor and the screw operate according to the call signal of the powder weighing turnover mechanism to discharge.

[0016] The powder discharging device based on the multi-stage bin, arch breaking mechanism and weighing module provided by the present disclosure has the advantages that: through the multi-station synchronous working design, the powder discharging device realizes parallel feeding, weighing and turnover of the powder, changes the series connection of multiple production steps to parallel connection, greatly shortens the total time of a single discharging cycle, and greatly improves the overall production efficiency under the premise of ensuring high precision. Attached Figure Description

[0017] Fig. 1 This is an overall schematic diagram of a powder feeding device based on a multi-stage silo, an arch-breaking mechanism, and a weighing module, as shown in an embodiment of this disclosure.

[0018] Fig. 2 This is a schematic diagram of a powder silo mechanism shown in an embodiment of this disclosure;

[0019] Fig. 3 This is a schematic diagram of a powder feeding mechanism according to an embodiment of the present disclosure;

[0020] Fig. 4 This is a schematic diagram of a powder weighing and turning mechanism shown in an embodiment of this disclosure.

[0021] In the picture:

[0022] 1. Powder silo mechanism; 2. Powder feeding mechanism; 3. Powder weighing and tilting mechanism; 5. Powder silo;

[0023] 6. Disturbance screw; 7. Material level sensor; 8. Disturbance motor; 9. Material distribution motor and screw;

[0024] 10. Servo motor; 11. Feed inlet; 12. Disturbance motor; 13. Feed bin; 14. Discharge outlet;

[0025] 15. Gears and racks; 16. Servo motors; 17. Platforms; 18. Weighing sensors;

[0026] 19. Weighing cup; 20. Receiving bowl. Detailed Implementation

[0027] The present disclosure will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] Unless otherwise defined, the technical and scientific terms used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains; the terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure; the term "comprising" and any variations thereof in this disclosure are intended to cover non-exclusive inclusion. Clearly, the embodiments described in this disclosure are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0029] In this disclosure, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this disclosure. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] See Figs. 1 to 4 The powder feeding device disclosed herein, based on a multi-stage silo, an arch-breaking mechanism, and a weighing module, includes: multiple powder silo mechanisms 1, multiple powder feeding mechanisms 2, and a powder weighing and tilting mechanism 3. Each powder silo mechanism 1 corresponds to one powder feeding mechanism 2, and the multiple powder silo mechanisms 1 and multiple powder feeding mechanisms 2 operate synchronously. The arch-breaking mechanism of the powder silo mechanism is a disturbance screw, and the disturbance mechanism of the powder feeding mechanism is a scraper (the scraper can be L-shaped), which is driven to rotate by a disturbance motor.

[0031] The powder silo mechanism includes a powder silo 5, a disturbance screw 6, a level sensor 7, a disturbance motor 8, a distribution motor, and a screw 9. A tubular chain conveyor transports powder along the pipeline to the powder silo 5. The silo interacts with the tubular chain conveyor based on signals from the level sensor 7. When the low-level sensor sends a signal, the tubular chain conveyor begins feeding into the silo; when the high-level sensor sends a signal, the tubular chain conveyor stops feeding. After the system starts operating automatically, the distribution motor and screw 9 are controlled to discharge powder according to the feeding signal from the powder weighing mechanism. The disturbance screw 6 ensures even powder distribution and effectively prevents bridging.

[0032] The powder feeding mechanism includes: a servo motor 10, a feed inlet 11, a disturbance motor 12, a feeding hopper 13, and a discharge outlet 14. The feed inlet 11 is connected to the feeding hopper 13 via a pipe. The powder feeding mechanism body is equipped with a level sensor 7 to determine the amount of powder material inside, ensuring continuous production. When the level is detected to be low, a signal is automatically sent to drive the powder hopper mechanism 1 to agitate rapidly, achieving rapid feeding. When the level is detected to be high, a signal is sent to stop feeding. In automatic operation, each level sensor 7 can simultaneously feed and weigh. The control system controls the servo motor 10 and the feeding screw according to the target value. Initially, high-speed feeding is used to improve efficiency; as the target value approaches, the speed is reduced to achieve high-precision quantitative feeding, ensuring feeding accuracy. Throughout the quantitative feeding process, the PLC reads the weight value from the weighing module in real time, forming feedback control. During the quantitative weighing and feeding process, the disturbance motor 12 and the disturbance scraper run continuously, effectively breaking the arch in the feeding bin 13 and avoiding the impact of the travel bridge arch on the quantitative feeding cycle.

[0033] The powder weighing and turning mechanism includes: gears and racks 15, a servo motor 16, a platform 17, weighing sensors 18, weighing cups 19, and receiving bowls 20. The powder feeding mechanism 2 injects powder into the 6-station weighing cups 19. The weighing sensors 18 automatically calculate the weight of the powder in each cup. Feeding stops when the powder in each cup reaches the set range. When the powder in all cups reaches the set range, the servo motor 16 drives the gears and racks 15 to pour all the weighed powder from each weighing cup 19 into their respective receiving bowls 20.

[0034] The device provided in this disclosure achieves parallel feeding, weighing and turning of powder through a multi-station synchronous working design, changing multiple production steps from series to parallel, which greatly shortens the total time of a single feeding cycle, thereby significantly improving the overall production efficiency while ensuring high precision.

[0035] Multi-stage arch breaking ensures continuous and stable production: The unit is equipped with a dual arch breaking mechanism. First, a disturbance screw is used in the powder hopper mechanism to effectively break up any "bridges" that may form within the hopper; second, a scraper is used in the powder feeding mechanism to continuously agitate the powder within the feeding hopper. This multi-stage, continuous arch breaking design fundamentally solves the problems of poor feeding, interrupted feeding, or pulsed feeding caused by powder's tendency to stick and bridge, ensuring the continuous, stable, and smooth feeding process.

[0036] Intelligent high-precision quantitative control: A servo motor drives the feeding screw, combined with real-time feedback control from a PLC and weighing sensors. The control system dynamically adjusts the feeding speed based on the difference between the current weight and the target value, implementing a two-stage or multi-stage control strategy of "high-speed coarse feeding + low-speed fine feeding." This not only improves feeding efficiency but also effectively avoids overshooting by using low-speed fine operation when approaching the target value, achieving extremely high quantitative feeding accuracy.

[0037] High level of automation and informatization: The entire unit operates fully automatically. Both the powder silo and the powder feeding mechanism are equipped with level sensors, enabling intelligent interlocking communication with the upstream feeding system and between them. This allows for automatic material replenishment and cutoff, reducing manual intervention and ensuring continuous and consistent production. Simultaneously, a PLC monitors the entire process in real time, facilitating integration into a larger production management system.

[0038] Stable structure and reliable weighing: The powder weighing and turning mechanism uses a marble platform as the supporting foundation. Utilizing the physical properties of marble itself, such as high rigidity, low thermal deformation and excellent stability, it provides a nearly undisturbed stable working environment for high-precision weighing sensors, effectively isolating external vibrations and stress interference, thereby ensuring the long-term stability and absolute accuracy of weighing data.

[0039] Synchronous flipping improves process cycle time: The flipping motion of multiple weighing cups is synchronously driven by a servo motor through a gear and rack mechanism. This design ensures that all stations can instantly pour the material into the receiving bowl simultaneously after weighing, with uniform movements that greatly shorten the waiting time for material transfer and further optimize the production cycle time.

[0040] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A powder feeding device based on a multi-stage silo, an arch-breaking mechanism, and a weighing module, characterized in that, The device includes: a powder silo mechanism (1), multiple powder feeding mechanisms (2) and multiple powder weighing and turning mechanisms (3); The powder silo mechanism (1) includes a powder silo (5), a disturbance screw (6) disposed in the powder silo (5), a level sensor (7) for detecting the material level in the powder silo (5), a disturbance motor (8) for driving the disturbance screw (6), and a distributing motor and a screw (9); the level sensor (7) is configured to communicate with an external feeding system to control the start and stop of feeding into the powder silo (5); Each powder feeding mechanism (2) includes a servo motor (10), a feed inlet (11), a disturbance motor (12), a feeding bin (13), a material level detection sensor, and a discharge outlet (14); the feed inlet (11) is connected to the feeding bin (13) through a pipe; the material level detection sensor is used to detect the powder level inside the feeding bin (13) and control the feeding of the feeding bin (13); the servo motor (10) is used to drive the feeding screw; the disturbance motor (12) is used to drive the scraper to break up the powder in the feeding bin (13); Each powder weighing and turning mechanism (3) corresponds to a separate feeding mechanism (2). Each powder weighing and turning mechanism (3) includes: a servo motor (16), a gear and rack (15), a weighing sensor (18), a weighing cup (19), and a receiving bowl (20). The platform (17) is used to support each powder weighing and turning mechanism (3). The servo motor (16) drives the weighing cup (19) to flip via gears and racks (15), the weighing sensor (18) is used to detect the weight of the weighing cup (19), and the receiving bowl (20) is used to receive the powder unloaded from the weighing cup (19).

2. The apparatus according to claim 1, characterized in that, The disturbance screw (6) in the powder hopper mechanism (1) is configured to rotate within the powder hopper (5) to achieve uniform powder feeding and effectively prevent powder from forming bridges.

3. The apparatus according to claim 1, characterized in that, The scraper in the powder feeding mechanism (2) is driven by the disturbance motor (12) to run continuously during the quantitative weighing and feeding process, so as to break the arch of the powder in the feeding bin (13).

4. The apparatus according to claim 1, characterized in that, The control process of the powder feeding mechanism (2) includes: the control system controls the servo motor (10) and the feeding screw to work according to the target weight value. In the initial feeding stage, the feeding mode of the first feeding speed is adopted, and when the weight is close to the target value, it is switched to the feeding mode of the second feeding speed. The first feeding speed is greater than the second feeding speed. In addition, the PLC reads the weight value of the weighing sensor (18) in real time to form feedback control.

5. The apparatus according to claim 1, characterized in that, The flipping action of the powder weighing and flipping mechanism (3) is configured such that when the weight of the powder in each weighing cup (19) reaches the set range, the servo motor (16) moves synchronously and pours the powder in each weighing cup (19) into its respective receiving bowl (20) at the same time through the gear and rack (15).

6. The apparatus according to claim 1, characterized in that, The material level sensor (7) of the powder silo mechanism (1) includes a high-level sensor and a low-level sensor; when the low-level sensor sends a signal, it triggers the external tubular chain conveyor to feed the powder silo (5); when the high-level sensor sends a signal, it triggers the external tubular chain conveyor to stop feeding the powder, and the high-level sensor is located above the low-level sensor.

7. The apparatus according to claim 1, characterized in that, When the material level detection sensor of the powder feeding mechanism (2) detects that the material level in the mechanism is low, it sends a signal to the powder silo mechanism (1) to drive it to feed the material; when it detects that the material level has reached a high level, it sends a signal to stop the powder silo mechanism (1) from feeding the material.

8. The apparatus according to claim 1, characterized in that, The dispensing motor and screw (9) operate according to the feeding signal of the powder weighing and turning mechanism (3) to feed the material.

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