Intelligent metering device for a mixing plant
By using a combination design of a uniform material tray and a reverse rotating screw shaft in the intelligent metering device of the mixing plant, the problem of direct material impact on the weighing bin is solved, and high-precision and stable material metering is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHUN COUNTY CHINA CONSTRUCTION WEST CONSTRUCTION CO LTD
- Filing Date
- 2025-09-09
- Publication Date
- 2026-08-04
AI Technical Summary
In existing technologies, materials directly impact the weighing bin from the silo, resulting in a large impact force within the weighing bin, increasing the sensor's range, and reducing measurement accuracy.
In the intelligent metering device of the mixing plant, a material equalization plate is installed at the top of the first mixing shaft, and a diversion pipe is coaxially set on the bottom surface of the discharge port of the top cover to guide the material to the center area of the material equalization plate. Combined with the reverse rotating screw conveyor shaft and the agitator, the material is buffered, diverted and stably conveyed, avoiding instantaneous impact.
It effectively reduces the dynamic interference of materials to the weighing sensor, improves the metering accuracy and stability, and ensures the continuous and uniform conveying of materials.
Smart Images
Figure CN224594055U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metering equipment technology, and in particular to an intelligent metering device for a mixing plant. Background Technology
[0002] According to a loss-in-weight scale disclosed in Chinese Publication No. CN213090920U, the loss-in-weight scale includes a base, a storage hopper, at least one weighing screw, and at least one control screw. The outlet of the storage hopper is located above the inlet of the control screw, and the outlet of the control screw is located above the inlet of the weighing screw. The weighing screw is located above the base. The storage hopper and the weighing screw are respectively connected to the base. A suspension point is provided on the base, and the weighing screw is mounted and supported on the suspension point, which is located on the centerline of the outlet of the control screw. This utility model aims to improve the accuracy of flow measurement and control speed, thereby improving the control response speed of flow, expanding the material adaptability range, and improving the flow measurement accuracy during replenishment.
[0003] In the aforementioned technologies and existing loss-in-weight scales, the material often impacts the weighing bin directly from the hopper during feeding. This results in a large impact force within the weighing bin, increasing the sensor's range and indirectly reducing the sensor's measurement accuracy. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies where materials are often directly impacted by the silo in the weighing bin, which results in a large impact force within the weighing bin, increases the sensor's range, and indirectly reduces the sensor's measurement accuracy. Therefore, this invention proposes an intelligent metering device for mixing plants.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: an intelligent metering device for a mixing plant, comprising a base, a controller on the top of the base, a weighing platform on one side of the controller, a gearbox on the top of the weighing platform, a first servo motor on the side of the gearbox near the controller, and a conveying pipe on the other side of the gearbox. A discharge pipe is located at one end of the conveying pipe, a feeding hopper is located at the top of the conveying pipe, a metering hopper is located at the top of the feeding hopper, a top cover is located at the top of the top cover, a feed inlet is located on the top surface of the top cover, a second servo motor is located on one side of the feed inlet, a drainage pipe is located on the bottom surface of the top cover, two screws are located inside the conveying pipe, a second stirring shaft is located inside the feeding hopper, a stirrer is located on one side of the second stirring shaft, a transmission rod is located inside the metering hopper, a first stirring shaft is located at the bottom of the transmission rod, a uniform material plate is located at the top of the first stirring shaft, drainage grooves are arranged in a circular array on the surface of the uniform material plate, and three stirring rods are vertically intersecting on the surface of the first stirring shaft.
[0006] Preferably, the weighing platform and the controller are evenly installed at both ends of the top surface of the base. The weighing platform is pinned to the base, and the controller is bolted to the base. The gearbox is installed on the top surface of the weighing platform and bolted to the weighing platform. The material conveying pipe is installed on the top surface of the weighing platform and bolted to the weighing platform.
[0007] Preferably, the discharge pipe is welded to the conveying pipe, and the end of the conveying pipe away from the discharge pipe is bolted to the gearbox. The first servo motor is bolted to the gearbox. The feeding hopper is installed on the top surface of the conveying pipe and is welded to the conveying pipe. The feeding hopper is connected to the conveying pipe.
[0008] Preferably, the metering hopper is installed on the top surface of the feeding hopper and is connected to the feeding hopper flange. The top cover is installed on the top surface of the metering hopper and is connected to the metering hopper flange. The second servo motor is installed in the middle position on the top surface of the top cover and is bolted to the top cover. The position of the drain pipe corresponds one-to-one with the position of the feed inlet and the drain pipe is welded to the top cover.
[0009] Preferably, one end of each of the two screws inside the feed pipe is installed inside the gearbox and connected to the gearbox key. One end of the second stirring shaft inside the feed hopper passes through the feed hopper and is installed inside the gearbox and connected to the gearbox key. The stirrer is bolted to the other end of the second stirring shaft.
[0010] Preferably, the vertical central axis of the first servo motor, the transmission rod, and the first stirring shaft are aligned, the top end of the transmission rod passes through the top cover and is shaft-connected to the first servo motor, and the bottom surface of the transmission rod is connected to the top flange of the first stirring shaft.
[0011] Preferably, the stirring rods perpendicularly intersecting on the surface of the first stirring shaft are all welded to the first stirring shaft, and the material distribution plate is located at the top of the first stirring shaft and welded to the first stirring shaft.
[0012] Beneficial effects
[0013] In this invention, a uniform material tray is installed at the top of the first stirring shaft. The top surface of the tray has a circumferential array of drainage grooves. The top of the first stirring shaft is connected to a transmission rod flange connected to the output shaft of the second servo motor to ensure coaxiality and stability of the rotational transmission. A drainage pipe is coaxially arranged at the bottom surface of the discharge port of the top cover, guiding the material entering from the inlet to the central area of the top surface of the uniform material tray. The uniform material tray has a frustum-shaped cross-section, with a larger lower diameter and a smaller upper diameter, and rotates synchronously with the stirring shaft. When the loss-in-weight scale is started, the servo motor drives the first stirring shaft to rotate via the transmission rod, causing the uniform material tray to rotate accordingly. The material from the inlet falls into the center of the uniform material tray through the drainage pipe and enters the radially distributed drainage grooves. Under centrifugal force, it is thrown outwards along the grooves and onto the inner wall of the metering hopper. The inner wall of the metering hopper has an inverted frustum-shaped cross-section with a small lower diameter and a large upper diameter. This effectively intercepts and catches the ejected material, allowing it to slowly slide down the inclined inner wall under gravity to the bottom feeding hopper. This avoids a concentrated impact on the weighing sensor, reducing dynamic interference and improving weighing accuracy. The bottom of the feeding hopper is connected to the inlet of the conveying pipe, which contains two parallel, counter-rotating screw conveyor shafts. These shafts propel the material evenly to the discharge port, where it is continuously discharged. This entire process achieves buffering, diversion, and stable conveying of the material, effectively solving problems such as large impact loads, forced increases in sensor range, and reduced metering accuracy caused by material falling directly from the hopper into the weighing hopper. Attached Figure Description
[0014] Figure 1 This is an isometric drawing of the present invention;
[0015] Figure 2 This is a front view of the present invention;
[0016] Figure 3 This is a partial front view of the present invention;
[0017] Figure 4 For the present utility model Figure 3 Sectional view at point AA;
[0018] Figure 5 This is a partial top view of the present invention;
[0019] Figure 6 For the present utility model Figure 5 Sectional view at BB;
[0020] Figure 7 This is an isometric drawing of a partial part of this utility model.
[0021] Legend:
[0022] 1. Base; 2. Controller; 3. Weighing platform; 4. Gearbox; 5. First servo motor; 6. Feed pipe; 7. Discharge pipe; 8. Feed hopper; 9. Metering hopper; 10. Top cover; 11. Feed inlet; 12. Second servo motor; 13. Transmission rod; 14. First stirring shaft; 15. Stirring rod; 16. Equalizing plate; 17. Drainage channel; 18. Second stirring shaft; 19. Agitator; 20. Screw; 21. Drainage pipe. Detailed Implementation
[0023] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.
[0024] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1:
[0026] Reference Figure 1-7A smart metering device for a mixing plant includes a base 1, a controller 2 on top of the base 1, a weighing platform 3 on one side of the controller 2, a gearbox 4 on top of the weighing platform 3, a first servo motor 5 on the side of the gearbox 4 near the controller 2, and a conveying pipe 6 on the other side of the gearbox 4. A discharge pipe 7 is located at one end of the conveying pipe 6, a feeding hopper 8 is located at the top of the conveying pipe 6, a metering hopper 9 is located at the top of the feeding hopper 8, a top cover 10 is located at the top of the metering hopper 9, an inlet 11 is located on the top surface of the top cover 10, a second servo motor 12 is located on one side of the inlet 11, and a drain pipe 21 is located on the bottom surface of the top cover 10. Two screws 20 are located inside the conveying pipe 6, and a second stirring shaft 18 is located inside the feeding hopper 8. A stirrer 19 is provided on one side of the second stirring shaft 18. A transmission rod 13 is provided inside the metering hopper 9. A first stirring shaft 14 is provided at the bottom of the transmission rod 13. A uniform distribution plate 16 is provided at the top of the first stirring shaft 14. A flow channel 17 is arranged in a circular array on the surface of the uniform distribution plate 16. Three stirring rods 15 are arranged perpendicularly and intersectingly on the surface of the first stirring shaft 14. The weighing platform 3 and the controller 2 are evenly installed at both ends of the top surface of the base 1. The weighing platform 3 is pin-connected to the base 1, and the controller 2 is bolted to the base 1. The gearbox 4 is installed on the top surface of the weighing platform 3 and bolted to the weighing platform 3. The conveying pipe 6 is installed on the top surface of the weighing platform 3 and bolted to the weighing platform 3. The discharge pipe 7 is welded to the conveying pipe 6, and the conveying pipe 6 is far away from the weighing platform 3. One end of the discharge pipe 7 is bolted to the gearbox 4. The first servo motor 5 is bolted to the gearbox 4. The feed hopper 8 is installed on the top surface of the conveying pipe 6 and is welded to the conveying pipe 6, and the feed hopper 8 is connected to the conveying pipe 6. The metering hopper 9 is installed on the top surface of the feed hopper 8 and is flanged to the feed hopper 8. The top cover 10 is installed on the top surface of the metering hopper 9 and is flanged to the metering hopper 9. The second servo motor 12 is installed in the middle of the top surface of the top cover 10 and is bolted to the top cover 10. The position of the drain pipe 21 corresponds one-to-one with the position of the inlet 11 and is welded to the top cover 10. One end of the two screws 20 inside the conveying pipe 6... All are installed inside the gearbox 4 and keyed to the gearbox 4. One end of the second stirring shaft 18 inside the feed hopper 8 passes through the feed hopper 8 and is installed inside the gearbox 4 and keyed to the gearbox 4. The stirrer 19 is bolted to the other end of the second stirring shaft 18. The vertical central axis of the first servo motor 5, the transmission rod 13, and the first stirring shaft 14 are aligned. The top end of the transmission rod 13 passes through the top cover 10 and is shafted to the first servo motor 5. The bottom surface of the transmission rod 13 is connected to the top flange of the first stirring shaft 14. The stirring rods 15, which are perpendicularly intersecting on the surface of the first stirring shaft 14, are all welded to the first stirring shaft 14. The equalizing plate 16 is located at the top of the first stirring shaft 14 and is welded to the first stirring shaft 14.
[0027] The base 1 serves as the load-bearing platform for the entire machine, and its rigid structure provides stable support for all components, preventing weighing accuracy from being affected by bottom deformation. A controller 2 is mounted on top of the base 1. Controller 2 is the electrical control center of the entire machine, responsible for receiving weighing signals, driving each servo motor, and coordinating the working rhythm of each actuator. A weighing platform 3 is installed on one side of the controller 2. The weighing platform 3 is connected to the base 1 via a pin, forming a floating support unit capable of measuring vertical forces. A weighing sensor is installed in the weighing platform 3 to convert the material weight into an electrical signal and transmit it to the controller 2. A gearbox 4 is fixed to the top of the weighing platform 3. The gearbox 4 contains a transmission gear system used to reduce the high-speed rotation of the servo motors and distribute the driving torque. A first servo motor 5 is fixed to one side of the gearbox 4. The output shaft of the first servo motor 5 is connected to the input shaft flange of the gearbox 4 via bolts. Its speed and angle are precisely controlled by the controller 2 to achieve synchronous drive of the screw conveyor shaft and the stirring shaft. On the other side of the gearbox 4, a conveying pipe 6 is installed. Inside the conveying pipe 6 are two parallel and counter-rotating screws 20. One end of each screw 20 is connected to the output shaft of the gearbox 4 via a key. The counter-rotation ensures that the material is evenly pushed within the pipe and avoids offset and material accumulation caused by unidirectional rotation. One end of the conveying pipe 6 is connected to the discharge pipe 7, and the two are welded together to ensure smooth material discharge. A feeding hopper 8 is welded to the top of the conveying pipe 6. The bottom of the feeding hopper 8 is connected to the opening of the conveying pipe 6. A second stirring shaft 18 is installed inside the feeding hopper 8. One end of the stirring shaft passes through the hopper wall and is connected to the gearbox 4 via a key. The other end is connected to the agitator 19 via bolts. The agitator 19 continuously agitates the material during rotation to prevent the material from forming arches or gaps within the hopper. The top of the feeding hopper 8 is connected to a metering hopper 9 via a flange. The metering hopper 9 is the core weighing container. Its inner wall is shaped like an inverted frustum, with the lower diameter smaller than the upper diameter, allowing the material to slide slowly down the wall and reducing the instantaneous impact on the weighing platform 3. The top flange of the metering hopper 9 is connected to the top cover 10. A feed inlet 11 is opened on the top surface of the top cover 10, and the feed inlet 11 is connected to the flange of the electrically controlled valve of the upper hopper. When the electrically controlled valve is opened, material enters the metering hopper 9 from the hopper. A guide pipe 21 is installed on the bottom surface of the top cover 10. The guide pipe 21 is welded and fixed to the top cover 10 and is coaxial with the feed inlet 11. Material is directed into the central area of the equalization plate 16 through the guide pipe 21, reducing the randomness of material falling. A second servo motor 12 is installed in the middle of the top cover 10 and connected to the top cover 10 by bolts. Its output shaft is directly connected to the transmission rod 13. The transmission rod 13 passes through the top cover 10 and is connected to the first stirring shaft 14 through a flange, ensuring that the rotational force is transmitted without eccentricity. The top of the first stirring shaft 14 is welded with a uniform material tray 16, which is frustum-shaped with a large lower diameter and a small upper diameter. A circular array of guide channels 17 is distributed on the tray's surface. These channels evenly disperse the material falling into the center under centrifugal force, preventing material from concentrating in any one area. Three stirring rods 15 are vertically and intersectingly arranged on the surface of the first stirring shaft 14 and welded to the shaft. As the shaft rotates, the stirring rods 15 cut, tumble, and push the material in the hopper, preventing the material from accumulating in dead zones during gravity descent.During operation, material is metered and falls from the upper hopper through an electrically controlled valve, enters the inlet 11 into the guide pipe 21, and is directly guided to the center of the equalizing disc 16. The second servo motor 12 drives the transmission rod 13 and the first stirring shaft 14 to rotate, causing the equalizing disc 16 to rotate at high speed. Under the action of centrifugal force, the material is evenly thrown onto the inner wall of the metering hopper 9 through the guide groove 17 and slowly slides down the inverted frustum-shaped inclined wall to the bottom feeding hopper 8. The stirring rod 15 on the first stirring shaft 14 continuously disperses the material, keeping the descent uniform and stable. At the same time, the first servo motor 5 drives the two counter-rotating screws 20 in the conveying pipe 6 and the second stirring shaft 18 in the feeding hopper 8 to work together through the gearbox 4. The stirrer 19 turns the material to prevent bridging, and the screws 20 smoothly convey the material to the discharge port for continuous output. Throughout the process, the weighing platform 3 senses the weight changes of the metering hopper 9 and its contents in real time and transmits the signal to the controller 2. The controller 2 dynamically adjusts the opening and closing of the electrically controlled valve and the speed of the screws 20 according to the weight changes, thereby achieving high-precision dynamic metering. Specific Implementation Example 2:
[0029] Reference Figure 1-7A smart metering device for a mixing plant, further based on the basic structure in Specific Embodiment 1, uses the base 1 as the overall load-bearing and reference platform during use. Its high rigidity structure ensures the stability and anti-interference of the weighing system. A controller 2 is installed on top of the base 1. The controller 2 is the electrical and logic hub of the entire machine, containing a weighing signal acquisition module, a servo drive module, an I / O interface module, and a communication module. It is responsible for real-time acquisition of analog signals from the weighing sensors, performing digital filtering and calculation after A / D conversion, and simultaneously controlling the speed, direction, and start / stop of the first servo motor 5 and the second servo motor 12. Data interaction and action command execution are achieved through a communication interface with a host computer or automated production line. The weighing platform 3 is connected to the base 1 by a pin shaft and a weighing sensor is arranged there. The weighing sensor converts the weight changes of the metering hopper 9 and the materials inside into electrical signals. The controller 2 performs high-sampling-rate real-time monitoring of these signals to determine the instantaneous flow rate and cumulative weight changes of the materials. Gearbox 4 is fixed above weighing platform 3. Through a high-precision gear pair, it reduces the high-speed, low-torque rotation of the first servo motor 5 to a low-speed, high-torque output, distributing power to two parallel, counter-rotating screws 20 within the conveying pipe 6 and the second stirring shaft 18 within the feeding hopper 8. The counter-rotating screws 20 counteract each other's lateral displacement during material propulsion, making the axial conveying of material more stable and uniform. A discharge pipe 7 is welded to one end of the conveying pipe 6, allowing material to smoothly enter the discharge port after being propelled by the screws. The feeding hopper 8 is welded to the top of the conveying pipe 6. The second stirring shaft 18 inside the feeding hopper 8 is connected to a mixer 19, which continuously agitates the material to prevent arching or bridging within the hopper. The metering hopper 9 is connected to the feeding hopper 8 via a flange. Its inverted frustum-shaped inner wall design allows material to descend slowly along the inclined surface, effectively reducing interference from the instantaneous impact on the symmetrical platform 3. Above the metering hopper 9 is a flange-connected top cover 10. The top cover 10 has an inlet 11 connected to the flange of the upstream silo's electric control valve. When the electric control valve is opened, the material enters the guide pipe 21. The guide pipe 21 is coaxially welded to the top cover 10 and leads directly to the center of the uniform distribution plate 16. The second servo motor 12 installed in the middle of the top cover 10 is rigidly connected to the first stirring shaft 14 through the transmission rod 13. The top of the first stirring shaft 14 is welded to a frustum-shaped uniform distribution plate 16. The plate surface is circumferentially distributed with guide grooves 17. After the material falls into the center of the plate, it is evenly thrown towards the inner wall of the metering hopper 9 by centrifugal force along the grooves. The stirring rod 15 welded to the surface of the first stirring shaft 14 continuously disperses and pushes the material during rotation to prevent uneven material flow or local accumulation. The metering process of the twin-screw 20 loss-in-weight scale is realized by the controller 2 through continuous data acquisition from the weighing sensor. The controller 2 records the initial weight at the start of operation. After the material falls and is dispersed by the equalization plate 16, it slowly enters the feeding hopper 8 under the action of gravity and is conveyed by the screw 20. The weight value output by the weighing sensor decreases as the material is output. The controller 2 calculates the instantaneous flow rate in real time according to the rate of weight reduction and changes the conveying speed of the screw 20 by adjusting the speed of the first servo motor 5 through closed-loop regulation to ensure that the material is output according to the set ratio and rate.When the target cumulative output is reached, controller 2 issues a command to close the upstream solenoid valve or stop the screw 20 from rotating. In the coordination of electronic components, the load cell provides a weight signal as the input source. Controller 2 receives this signal, processes it, and then outputs a control signal to the first servo motor 5 drive module and the second servo motor 12 drive module. The motion feedback of the first servo motor 5 is input back to controller 2 through an encoder signal to achieve closed-loop control of speed and position. The second servo motor 12 also uses an encoder to provide feedback on its rotational status to ensure the stable rotational speed of the equalizing disc 16. The on / off signal of the solenoid valve is also directly output by controller 2, and the controller receives valve position feedback to confirm the execution status. Specifically, after the electric control valve is opened, the material is directed into the high-speed rotating uniform material plate 16 through the diversion pipe 21 and evenly dispersed to the inner wall of the metering hopper 9. It then slowly descends into the feeding hopper 8 by gravity, and after being stirred and prevented from bridging, it is stably pushed to the discharge port by the twin screws 20. The weighing platform 3 detects the weight change in real time, and the controller 2 adjusts the speed of the screws 20 and the status of the upstream valve according to the rate of weight change to achieve dynamic, continuous and high-precision metering. Throughout the process, the material flow remains stable, the weighing signal is stable, and the output flow is controllable, thus completing a fully automatic and high-precision material metering and conveying process.
[0030] In summary:
[0031] 1. A uniform material distribution plate 16 is installed at the top of the first stirring shaft 14. The top surface of the uniform material distribution plate 16 is circumferentially arrayed with guide grooves 17. The top of the first stirring shaft 14 is connected to the output shaft of the second servo motor 12 via a transmission rod 13 flange to ensure the coaxiality and stability of the rotational transmission. A guide pipe 21 is coaxially arranged on the bottom surface of the discharge port of the top cover 10. The material entering from the feed port 11 is directionally guided to the central area of the top surface of the uniform material distribution plate 16 through the guide pipe 21. The cross-section of the uniform material distribution plate 16 is frustum-shaped, with a large lower diameter and a small upper diameter, and it rotates synchronously with the stirring shaft. When the loss-in-weight scale is started, the servo motor drives the first stirring shaft 14 to rotate through the transmission rod 13. The uniform material distribution plate 16 rotates accordingly. The material from the feed port 11 falls into the center of the uniform material distribution plate 16 through the guide pipe 21 and then enters the radially distributed guide grooves 17. Under the action of centrifugal force, it is thrown to all sides along the grooves and sprinkled onto the inner wall of the metering hopper 9. The inner wall of the metering hopper 9 has an inverted frustum cross-section with a small lower diameter and a large upper diameter. This effectively intercepts and catches the ejected material, allowing it to slowly slide down the inclined inner wall to the bottom feeding hopper 8 under gravity. This avoids a concentrated impact on the weighing sensor, thereby reducing dynamic interference and improving weighing accuracy. The bottom of the feeding hopper 8 is connected to the inlet 11 of the conveying pipe 6. The conveying pipe 6 is equipped with two parallel and counter-rotating spiral conveying shafts. The stable spiral propulsion evenly delivers the material to the discharge port, from which it is continuously discharged. The entire process achieves buffering, diversion, and stable conveying of the material, effectively solving problems such as large impact loads, forced increase in sensor range, and reduced metering accuracy caused by the material falling directly from the silo and impacting the weighing hopper.
[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A smart metering device for a mixing plant, comprising a base (1), characterized in that: The base (1) has a controller (2) on top, a weighing platform (3) on one side of the controller (2), a gearbox (4) on top of the weighing platform (3), a first servo motor (5) on the side of the gearbox (4) near the controller (2), and a feeding pipe (6) on the other side of the gearbox (4). A discharge pipe (7) is provided at one end of the feeding pipe (6), a feeding hopper (8) is provided at the top of the feeding pipe (6), a metering hopper (9) is provided at the top of the feeding hopper (8), a top cover (10) is provided at the top surface of the top cover (10), an inlet (11) is provided on the top surface of the top cover (10), and a first servo motor (5) is provided on one side of the inlet (11). Two servo motors (12), the bottom surface of the top cover (10) is provided with a diversion pipe (21), the inside of the conveying pipe (6) is provided with two screws (20), the inside of the feeding hopper (8) is provided with a second stirring shaft (18), a stirrer (19) is provided on one side of the second stirring shaft (18), the inside of the metering hopper (9) is provided with a transmission rod (13), the bottom of the transmission rod (13) is provided with a first stirring shaft (14), the top of the first stirring shaft (14) is provided with a uniform plate (16), the surface of the uniform plate (16) is provided with a circumferential array of diversion grooves (17), and the surface of the first stirring shaft (14) is provided with three stirring rods (15) perpendicularly intersecting.
2. The intelligent metering device for a mixing plant according to claim 1, characterized in that: The weighing platform (3) and controller (2) are evenly installed at both ends of the top surface of the base (1). The weighing platform (3) is pin-connected to the base (1), and the controller (2) is bolt-connected to the base (1). The gearbox (4) is installed on the top surface of the weighing platform (3), and the gearbox (4) is bolt-connected to the weighing platform (3). The conveying pipe (6) is installed on the top surface of the weighing platform (3), and the conveying pipe (6) is bolt-connected to the weighing platform (3).
3. The intelligent metering device for a mixing plant according to claim 1, characterized in that: The discharge pipe (7) is welded to the conveying pipe (6), and the end of the conveying pipe (6) away from the discharge pipe (7) is bolted to the gearbox (4). The first servo motor (5) is bolted to the gearbox (4). The feeding hopper (8) is installed on the top surface of the conveying pipe (6), and the feeding hopper (8) is welded to the conveying pipe (6). The feeding hopper (8) is connected to the conveying pipe (6).
4. The intelligent metering device for a mixing plant according to claim 1, characterized in that: The metering hopper (9) is installed on the top surface of the feeding hopper (8) and is connected to the flange of the feeding hopper (8). The top cover (10) is installed on the top surface of the metering hopper (9) and is connected to the flange of the metering hopper (9). The second servo motor (12) is installed in the middle position on the top surface of the top cover (10) and is bolted to the top cover (10). The position of the drain pipe (21) corresponds one-to-one with the position of the feed inlet (11) and the drain pipe (21) is welded to the top cover (10).
5. The intelligent metering device for a mixing plant according to claim 1, characterized in that: One end of each of the two screws (20) inside the feed pipe (6) is installed inside the gearbox (4) and connected to the gearbox (4) by a key. One end of the second stirring shaft (18) inside the feed hopper (8) passes through the feed hopper (8) and is installed inside the gearbox (4) and connected to the gearbox (4) by a key. The stirrer (19) is bolted to the other end of the second stirring shaft (18).
6. The intelligent metering device for a mixing plant according to claim 1, characterized in that: The first servo motor (5) is aligned with the vertical center axis of the transmission rod (13) and the first stirring shaft (14). The top end of the transmission rod (13) passes through the top cover (10) and is axially connected to the first servo motor (5). The bottom surface of the transmission rod (13) is connected to the top flange of the first stirring shaft (14).
7. The intelligent metering device for a mixing plant according to claim 1, characterized in that: The stirring rods (15) perpendicularly intersecting on the surface of the first stirring shaft (14) are all welded to the first stirring shaft (14). The uniform material plate (16) is set at the top of the first stirring shaft (14) and is welded to the first stirring shaft (14).