Automatic batching and mixing device and method for recycled raw materials based on proportion control of storage tanks

Abstract

The present invention relates to the technical field of ingredient mixing, and specifically relates to a regenerated raw material automatic ingredient mixing device and method based on tank ratio control. Through the automatic ingredient mixing device based on tanks, the material suction device realizes automatic suction of raw materials in the tanks; each tank adopts a weighing and discharging mechanism to ensure accurate discharging according to a preset ratio; after the discharged materials are homogenously mixed through the mixing and conveying channel, they are automatically distributed into the drying mechanism; the drying mechanism can either discharge materials separately or operate jointly. By adjusting the discharging ratio, the final mixed materials can meet the required ratio for production. Through the above fully automatic mechanized control solution, the problem of uniform dispersion of materials is solved.

Description

Technical Field

[0001] The invention relates to the technical field of batching and mixing, and in particular to a device and method for automatically batching and mixing recycled raw materials based on material tank ratio control. Background Art

[0002] Recycled raw materials are raw materials obtained by recycling, reprocessing or reusing discarded materials or products. These materials can come from industrial waste or construction waste, etc. The purpose of recycled raw materials is to reduce dependence on virgin resources, reduce environmental impact, and promote the recycling of resources. Recycled raw materials are inferior to virgin materials in some properties, such as strength, durability or purity. Recycled materials can be combined with virgin materials or other additives through blending to improve the properties of the final product.

[0003] The traditional manual batching method, or the semi-automatic operation mode, has exposed many drawbacks when dealing with the above complex situations. On the one hand, manual operation requires a lot of manpower, resulting in a high level of labor intensity. On the other hand, the manual batching process is easily interfered by human factors, such as operator fatigue, experience differences, etc., which frequently leads to batching errors. Moreover, in the material mixing process, whether it is manual stirring or mixing operation of semi-automatic equipment, it is difficult to achieve uniform dispersion of materials. This uneven mixing condition will have a direct impact on the stability of subsequent production processes, and thus seriously damage product quality, making it difficult for products to meet expected standards in terms of performance and specifications. Summary of the invention

[0004] In view of the problems existing in the prior art, an automatic batching and mixing device and method for recycled raw materials based on material tank ratio control are provided. Through the automatic batching and mixing device based on four large material tanks, two sets of suction devices can realize automatic suction of raw materials from the four material tanks; each material tank adopts a weight-based discharging mechanism to ensure accurate discharge according to a preset ratio; the discharged materials are simultaneously homogenized and mixed through a mixing and conveying channel, and then automatically distributed into two sets of drying mechanisms; the drying mechanisms can discharge materials individually or in combination, and by adjusting the discharge ratio, the final mixed material can meet the ratio required for production. The above fully automatic mechanized control scheme solves the problem that it is difficult to achieve uniform dispersion of materials in the material mixing link, regardless of manual stirring or mixing operation with semi-automatic equipment.

[0005] To solve the problems of the existing technology, the present invention provides an automatic batching and mixing device for recycled raw materials based on proportion control of material tanks, which includes material tanks, weighing mechanisms, material suction mechanisms, mixing and conveying mechanisms, and drying mechanisms. There are at least two material tanks and drying mechanisms. The material suction mechanism connects the material tanks and the mixing and conveying mechanism, the mixing and conveying mechanism is respectively connected to the drying mechanisms, and the weighing mechanism is arranged on the material tanks for measuring the discharge amount; the mixing and conveying mechanism has a horizontally arranged mixing and conveying cavity, the mixing and conveying cavity has a feed port connected to the material suction mechanism and a discharge port connected to the drying mechanisms. A rotatable rotating member is arranged in the mixing and conveying cavity, a spiral ribbon coaxial with the rotating member is arranged on the rotating member, the spiral ribbon is in clearance fit with the inner wall of the mixing and conveying cavity, and stirring rods are arranged between the inner side of the spiral ribbon and the outer surface of the rotating member. When the rotating member rotates, the spiral ribbon guides the materials in the mixing and conveying cavity to move while the stirring rods stir the materials.

[0006] Preferably, the bottom end of the material tank is provided with feet supported on the ground, and the weighing mechanism includes a pressure sensor arranged between the feet and the ground.

[0007] Preferably, the stirring rods extend along the radial direction of the rotating member, the stirring rods are arranged along the spiral direction of the spiral ribbon, one end of the stirring rod is connected to the outer surface of the rotating member, and the other end of the stirring rod is connected to the spiral ribbon.

[0008] Preferably, the mixing and conveying cavity forms a baffle channel along its length direction, the spiral ribbon is arranged in the baffle channel, and the materials move back and forth in the mixing and conveying cavity for mixing.

[0009] Preferably, the mixing and conveying cavity has an inner cavity, a middle cavity, and an outer cavity coaxially arranged from inside to outside in sequence. One end of the inner cavity is connected to the material suction mechanism to form a feed port, the other end of the inner cavity is connected to one end of the middle cavity, the other end of the middle cavity is connected to the outer cavity, and the discharge port is located at the other end of the outer cavity.

[0010] Preferably, the mixing and conveying mechanism includes an inner pipe, a middle pipe, and an outer pipe coaxially arranged from inside to outside. A closed disk is arranged at one end of the outer pipe, a closed ring rotatably connected to the inner pipe coaxially is arranged at the other end of the outer pipe, a right-side material guiding channel is arranged at one end of the inner pipe, and a left-side material guiding channel is formed between one end of the middle pipe and the closed ring.

[0011] Preferably, a material stirring driving mechanism for driving the inner pipe and the middle pipe to rotate coaxially in opposite directions is arranged on the closed disk, and the spiral ribbon is arranged on the outer surfaces of the inner pipe and the middle pipe.

[0012] Preferably, the mixing and conveying mechanism further includes an auger extending into the inner pipe. A collecting hopper with an upward opening is arranged at the feed port. One end of the auger extends into the collecting hopper, and a feeding motor for driving the auger to rotate is also arranged on the collecting hopper.

[0013] Preferably, the mixing and conveying mechanism further includes a stirring paddle. The stirring rod penetrates through the stirring paddle and is rotatably connected thereto. A fan-shaped groove is provided in the stirring paddle, and a positioning block located in the fan-shaped groove is provided on the stirring rod. Elastic elements are provided between both ends of the positioning block and both ends of the fan-shaped groove.

[0014] The automatic batching and mixing method of recycled raw materials based on tank ratio control uses an automatic batching and mixing device for recycled raw materials based on tank ratio control, and includes the following steps:

[0015] Step 1, the material suction mechanism sucks materials from the storage tanks and discharges them into the mixing and conveying mechanism. During this process, the weighing mechanism weighs the discharged amount and closes the material suction mechanism after reaching the standard.

[0016] Step 2, the materials are mixed in the mixing and conveying mechanism and sent to different drying mechanisms for drying in a predetermined proportion.

[0017] The beneficial effects of this application compared with the prior art are as follows: This application realizes the automatic suction of raw materials from the storage tanks through the material suction device; each storage tank adopts a weighing and discharging mechanism to ensure accurate discharging according to the preset proportion; after the discharged materials are homogenously mixed through the mixing and conveying channel, they are automatically distributed into the drying tower; the drying tower can discharge materials separately or operate jointly, and by adjusting the discharging proportion, the final mixed materials can meet the required ratio for production. Through the above fully automatic mechanized control scheme, perfect mixing of materials and precise control of proportions can be achieved, thereby stably ensuring the product quality.

[0018] This application also sets a baffle channel in the mixing and conveying mechanism, which increases the moving distance of the materials in the baffle channel and correspondingly extends the contact time between the materials and the spiral ribbon and the stirring rod. During this process, the materials are continuously axially stirred by the spiral ribbon and strongly sheared and dispersed by the stirring rod, thereby significantly increasing the stirring and mixing time of the materials.

[0019] This application also sets a stirring paddle on the stirring rod that needs to overcome the elastic force during rotation, so that the stirring paddle is under the action of the elastic force during rotation, which will generate vibration or swing, increase the turbulence of the fluid or materials, and improve the mixing uniformity. The elastic force enables the stirring paddle to automatically adjust the rotation resistance according to the material characteristics, adapt to materials with different viscosities and densities, and improve the versatility of the equipment. Description of the Drawings

[0020] Figure 1 is a perspective view of the mixing and conveying mechanism in the automatic batching and mixing device for recycled raw materials based on tank ratio control of the present invention;

[0021] Figure 2 is a perspective sectional view of the mixing and conveying mechanism in the automatic batching and mixing device for recycled raw materials based on tank ratio control of the present invention;

[0022] Figure 3 It is a cross-sectional view of the mixing and conveying mechanism in the automatic batching and mixing device of recycled raw materials based on tank ratio control of the present invention;

[0023] Figure 4 It is Figure 3 a partial enlarged view of part A of

[0024] Figure 5 It is Figure 3 a partial enlarged view of part B of

[0025] Figure 6 It is a schematic diagram of the mixing and conveying mechanism in the automatic batching and mixing device of recycled raw materials based on tank ratio control of the present invention after removing the outer pipe;

[0026] Figure 7 It is Figure 6 a partial enlarged view of part C of

[0027] Figure 8 It is a schematic diagram of the mixing and conveying mechanism in the automatic batching and mixing device of recycled raw materials based on tank ratio control of the present invention after removing the outer pipe and the middle pipe;

[0028] Figure 9 It is a three-dimensional exploded view of the stirring paddle in the mixing and conveying mechanism of the automatic batching and mixing device of recycled raw materials based on tank ratio control of the present invention;

[0029] Figure 10 It is a top view of the stirring paddle in the mixing and conveying mechanism of the automatic batching and mixing device of recycled raw materials based on tank ratio control of the present invention;

[0030] Figure 11 It is a schematic diagram of the automatic batching and mixing device of recycled raw materials based on tank ratio control of the present invention.

[0031] The reference numerals in the figure are: 1, material tank; 11, standing feet; 2, weighing mechanism; 3, suction mechanism; 4, mixing and conveying mechanism; 41, feed inlet; 42, discharge outlet; 43, rotating part; 44, spiral ribbon; 45, stirring rod; 461, inner cavity; 462, middle cavity; 463, outer cavity; 471, inner pipe; 472, middle pipe; 473, outer pipe; 474, closing disc; 475, closing ring; 476, right side material guiding channel; 478, left side material guiding channel; 481, partition disc; 482, driving motor; 483, driving gear; 484, driven gear; 485, internal gear ring; 491, auger; 492, feeding motor; 493, collecting hopper; 494, stirring paddle; 4941, fan-shaped groove; 495, positioning block; 496, elastic element; 5, drying mechanism; 61, three-way valve; 63, flow dividing valve. Detailed implementation manners

[0032] To further understand the features, technical means, specific purposes, and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] As Figure 1 , Figure 2 , Figure 3 and Figure 11 shown, the automatic batching and mixing device for recycled raw materials based on the proportion control of the storage tank 1 includes a storage tank 1, a weighing mechanism 2, a material suction mechanism 3, a mixing and conveying mechanism 4, and a drying mechanism 5. There are at least two storage tanks 1 and drying mechanisms. The material suction mechanism 3 is connected to the storage tank 1 and the mixing and conveying mechanism 4. The mixing and conveying mechanism 4 is respectively connected to the drying mechanism 5. The weighing mechanism 2 is arranged on the storage tank 1 for measuring the discharge amount. The mixing and conveying mechanism 4 has a horizontally arranged mixing and conveying cavity. The mixing and conveying cavity has a feed port 41 connected to the material suction mechanism 3 and a discharge port 42 connected to the drying mechanism 5. A rotatable rotating member 43 is arranged in the mixing and conveying cavity. A spiral belt 44 coaxial with the rotating member 43 is arranged on the rotating member 43. The spiral belt 44 is in clearance fit with the inner wall of the mixing and conveying cavity. A stirring rod 45 is arranged between the inner side of the spiral belt 44 and the outer surface of the rotating member 43. When the rotating member 43 rotates, the spiral belt 44 guides the material in the mixing and conveying cavity to move while the stirring rod 45 stirs the material.

[0034] Two sets of material suction devices (each set configured with a one - to - two structure) are adopted and each storage tank 1 is connected through pipelines. The material suction mechanism 3 uses vacuum adsorption or mechanical pumping technology to extract the raw materials in the storage tank 1 as required and send them to the next process.

[0035] Each storage tank 1 is equipped with an independent weighing sensor or a mechanical weighing mechanism 2, which can achieve accurate measurement.

[0036] It also includes a three - way valve 61. The three - way valve 61 is linked with the weighing mechanism 2. When the raw materials in the storage tank 1 reach the preset discharge condition, the three - way valve 61 is automatically controlled to connect the material suction mechanism 3 with the corresponding storage tank 1, (using pneumatic, electromagnetic or hydraulic mechanisms) to open, and discharge the materials according to the preset proportion, ensuring that the discharge amount of each storage tank 1 strictly meets the ratio requirements.

[0037] The raw materials after discharging enter a dedicated mixing and conveying channel. The inside of the channel is designed in the form of screw conveying or belt conveying, with fixed or adjustable stirring blades installed inside, realizing continuous stirring and uniform mixing during the conveying process. The stirring blades rotate synchronously with the conveying device through mechanical linkages, ensuring that the materials discharged from each storage tank 1 are fully mixed to form a uniform mixture.

[0038] The drying mechanism 5 includes two drying towers. The mixed material is automatically distributed into the two drying towers through the conveying system. Each drying tower adopts independent temperature control, air flow regulation, and material distribution devices, and can operate independently or jointly to achieve proportion adjustment and homogeneous drying of the material during the drying process.

[0039] A diverter valve 63 or a rotary disk distribution mechanism is adopted. According to the preset instructions of the control system, the mixed material is fed into the two drying towers in batches. The two drying towers can dry the materials with the same ratio simultaneously, or can input materials with different ratios into the two drying towers, improving the production efficiency of the recycled raw materials while ensuring the stable ratio of the final dried product.

[0040] Each module (material tank 1, material suction mechanism 3, weighing mechanism 2, mixing and conveying mechanism 4, drying mechanism 5) realizes automatic coordinated operation through a mechanical linkage mechanism and preset parameters. Specifically, basic linkage and time synchronization are carried out between the mechanical components through a simple PLC or logic controller to ensure the stability and accuracy of the overall operation.

[0041] The mixing and conveying mechanism 4 has a horizontally arranged mixing and conveying cavity. The material can enter the mixing and conveying cavity smoothly and orderly under the drive of negative pressure or positive pressure with precise and controllable flow rate and speed. The discharge port 42 is closely connected to the drying mechanism 5, following the logic of material transmission and process connection, and providing stable and suitable material output for the subsequent material distribution and drying process.

[0042] The spiral ribbon 44 and the inner wall of the mixing and conveying cavity adopt an interference fit method, which can not only ensure the smooth operation of the spiral ribbon 44 during rotation and avoid interference and collision with the inner wall, but also further promote the preliminary mixing and dispersion of the material through the shearing action at the gap during the material conveying process.

[0043] When the rotating part 43 starts to rotate driven by the driving device, the spiral ribbon 44, relying on the propelling force of its spiral structure, guides the material in the mixing and conveying cavity to move in a specific spiral path. During the material movement, through the axial stirring action, preliminary mixing of the material in the conveying direction is achieved. At the same time, the stirring rod 45 rotates at a high speed to generate strong shearing force and turbulent effect in the space area inside the spiral ribbon 44. This shearing force can effectively disperse the agglomerated material particles, and the turbulent effect further promotes the mixing and diffusion of the material at the micro level, enabling the material in the mixing and conveying cavity to be simultaneously subjected to the axial stirring of the spiral ribbon 44 and the strong shearing and dispersing action of the stirring rod 45, thereby realizing the deep stirring and uniform mixing of the material, providing high-quality mixed material for the subsequent distribution and drying process, and significantly improving the efficiency and product quality stability of the entire production process.

[0044] As Figure 11As shown, the bottom end of the material tank 1 is provided with a foot 11 supported on the ground. The weighing mechanism 2 includes a pressure sensor disposed between the foot 11 and the ground. By converting the pressure signal transmitted from the foot 11 to the ground into an electrical signal, the accurate perception and measurement of the weight of the material tank 1 and the materials inside it are achieved.

[0045] As Figure 6 and Figure 7 shown, the stirring rods 45 extend radially along the rotating member 43, and the stirring rods 45 are arranged along the spiral direction of the spiral ribbon 44. One end of the stirring rod 45 is connected to the outer surface of the rotating member 43, and the other end of the stirring rod 45 is connected to the spiral ribbon 44.

[0046] Through the radially extending layout, when the rotating member 43 rotates at a high speed, the stirring rods 45 can make full use of the centrifugal force and the shear force generated by the circular motion to exert a more extensive and in-depth stirring effect on the materials, effectively expanding the stirring range and improving the uniformity of material mixing.

[0047] As Figure 3 shown, the mixing and conveying cavity constitutes a baffle channel along its length direction, and the spiral ribbon 44 is disposed in the baffle channel, and the materials move back and forth in the mixing and conveying cavity for mixing.

[0048] Under the condition of limited equipment length, the moving distance of the materials in the baffle channel is greatly increased. For example, compared with the traditional straight-through conveying channel, the baffle channel can extend the moving distance of the materials. The significant increase in the moving distance of the materials directly leads to an effective extension of the stirring and mixing time. Inside the baffle channel, there are two key material processing components, namely the spiral ribbon 44 and the stirring rods 45. During the operation of the equipment, the spiral ribbon 44 can not only effectively push the materials to be conveyed directionally along the baffle channel through its own rotational motion, but also generate an axial stirring effect on the materials by using its spiral structure to promote the preliminary mixing of the materials during the conveying process. The stirring rods 45 are distributed in the baffle channel and generate strong shear force and turbulent effect through high-speed rotation to deeply stir and disperse the materials.

[0049] As Figure 2 and Figure 3 shown, the mixing and conveying cavity has an inner cavity 461, a middle cavity 462, and an outer cavity 463 coaxially arranged from inside to outside in sequence. One end of the inner cavity 461 is communicated with the material suction mechanism 3 to form a feed port 41, the other end of the inner cavity 461 is communicated with one end of the middle cavity 462, the other end of the middle cavity 462 is communicated with the outer cavity 463, and the discharge port 42 is located at the other end of the outer cavity 463.

[0050] One end of the inner chamber 461 is connected to the material suction mechanism 3 in a specific connection manner. This connection manner is designed based on the principle of hydrodynamics to ensure stable flow rate and pressure conditions during the material suction process, thereby forming an efficient and stable feed inlet 41. With the power provided by the material suction mechanism 3, the material can enter the inner chamber 461 smoothly along the designed conveying path at a precisely controllable rate.

[0051] The other end of the inner chamber 461 is connected to one end of the middle chamber 462. Ensure that the material can achieve a smooth transition between different chambers, reducing energy loss and flow resistance during the material transmission process. After the material is preliminarily conveyed and distributed in the inner chamber 461, it orderly enters the middle chamber 462 through this connection part.

[0052] Rotating spiral bands 44 are provided in both the middle chamber 462 and the outer chamber 463 to improve the stirring efficiency of the material in the middle chamber 462 and the outer chamber 463.

[0053] As Figure 3 and Figure 5 shown, the mixed conveying mechanism 4 includes an inner pipe 471, a middle pipe 472, and an outer pipe 473 coaxially arranged from inside to outside. A closing disk 474 is provided at one end of the outer pipe 473, and a closing ring 475 rotatably connected coaxially with the inner pipe 471 is provided at the other end of the outer pipe 473. A right-side material guiding channel 476 is provided at one end of the inner pipe 471, and a left-side material guiding channel 478 is formed between one end of the middle pipe 472 and the closing ring 475.

[0054] A closing disk 474 is equipped at one end of the outer pipe 473. The design of the closing disk 474 ensures that the connection end of the closing disk 474 and the outer pipe 473 is completely closed, effectively preventing the material from leaking from this end. A closing ring 475 is provided at the other end of the outer pipe 473, and the closing ring 475 is rotatably connected coaxially with the inner pipe 471 through a specific rotational connection manner. This rotational connection manner not only ensures that the inner pipe 471 can rotate coaxially relative to the outer pipe 473 flexibly but also maintains good sealing performance between the two, preventing the material from leaking during the rotation process.

[0055] A right-side material guiding channel 476 is provided at one end of the inner pipe 471. Ensure that the material can enter the stirring space between the inner pipe 471 and the middle pipe 472 through the right-side material guiding channel 476, and during the subsequent conveying process, utilize the rotation of the inner pipe 471 and the cooperation with other components to achieve the preliminary mixing and directional conveying of the material.

[0056] A left-side material guiding channel 478 is formed between one end of the middle pipe 472 and the closing ring 475. Under the action of a specific pressure difference and flow driving force, materials can smoothly enter between the outer surface of the middle pipe 472 and the inner surface of the outer pipe 473 from the left-side material guiding channel 478, and further mix and blend with the materials in the inner pipe 471 during subsequent operation. This multi-channel and layered structural design greatly improves the processing capacity and mixing effect of the mixing and conveying mechanism 4 on materials.

[0057] As Figure 4 shown, a stirring driving mechanism for driving the inner pipe 471 and the middle pipe 472 to rotate coaxially in opposite directions is provided on the closing disk 474, and the spiral ribbons 44 are arranged on the outer surfaces of the inner pipe 471 and the middle pipe 472.

[0058] The stirring driving mechanism includes a driving motor 482 provided at the outer end of the closing disk 474. A driving shaft rotatably connected coaxially therewith is provided in the closing disk 474. A partition disk 481 is further provided at the inner end of the closing disk 474. The partition disk 481 is in sealed rotational fit with the inner wall of the middle pipe 472. An active gear 483 coaxially and fixedly connected to the driving shaft and driven gears 484 circumferentially distributed along the active gear 483 are provided between the partition disk 481 and the closing disk 474. The active gear 483 and the driven gears 484 are meshed. An internal gear ring 485 coaxially and fixedly connected to the middle pipe 472 is provided inside one end of the middle pipe 472. The internal gear ring 485 is located between the partition disk 481 and the closing disk 474, and the internal gear ring 485 is meshed with the driven gears 484.

[0059] At the inner end of the closing disk 474, a partition disk 481 is provided. The partition disk 481 and the inner wall of the middle pipe 472 are in sealed rotational fit. Through the sealing material and structural design, it not only ensures that the partition disk 481 can rotate flexibly relative to the inner wall of the middle pipe 472, but also achieves a good sealing effect, effectively preventing material leakage at this part and maintaining the stability of the material flow environment inside the mixing and conveying mechanism 4.

[0060] In the space area between the partition disk 481 and the closing disk 474, the active gear 483 and a plurality of driven gears 484 circumferentially distributed along the active gear 483 are arranged. The active gear 483 and the driving shaft are coaxially fixed by key connection or other reliable fixed connection methods, so as to ensure that the active gear 483 can rotate synchronously with the driving shaft and transmit the torque of the driving shaft to the active gear 483.

[0061] Inside one end of the middle tube 472, an internal gear ring 485 is provided. The internal gear ring 485 and the middle tube 472 are coaxially fixedly connected through welding, hot fitting or other suitable fixing processes to ensure that the internal gear ring 485 can rotate synchronously with the middle tube 472. The position where the internal gear ring 485 is located is between the partition disc 481 and the closing disc 474, and it meshes with the driven gear 484. When the driving motor 482 operates, the driving shaft drives the driving gear 483 to rotate. Through the meshing action between the driving gear 483 and the driven gear 484, the torque is transmitted to the driven gear 484, and then the driven gear 484 drives the middle tube 472 to rotate through meshing with the internal gear ring 485. At the same time, due to the structural design correlation between the inner tube 471 and the middle tube 472 and the transmission layout of the material stirring drive mechanism, the coaxial reverse rotation of the inner tube 471 and the middle tube 472 is achieved. This enables the spiral belts 44 on the outer surfaces of the inner tube 471 and the middle tube 472 to rotate in the opposite direction, thereby mixing and conveying the materials.

[0062] As Figure 8 shown, the mixing and conveying mechanism 4 further includes an auger 491 extending into the inner tube 471. At the feeding port 41, a collecting hopper 493 with an upward opening is provided. One end of the auger 491 extends into the collecting hopper 493, and a feeding motor 492 for driving the auger 491 to rotate is also provided on the collecting hopper 493.

[0063] As an important material propulsion component, the auger 491 is arranged inside the inner tube 471 and extends along its axial direction. Through the spiral structure on the auger 491, the auger 491 can exert a stable and continuous axial thrust on the materials during rotation, prompting the materials to move towards the discharge end in an efficient and orderly manner inside the inner tube 471.

[0064] At the position of the discharge port 42, a collecting hopper 493 with an upward opening is provided.

[0065] To drive the auger 491 to achieve rotational motion, a feeding motor 492 is installed on the collecting hopper 493. As the power source of the auger 491, the feeding motor 492 is connected to the auger 491 through a suitable transmission method such as a coupling, belt drive or gear drive, ensuring that the power output by the motor can be efficiently and accurately transmitted to the auger 491 to drive the auger 491 to rotate stably at a set speed. This is to facilitate pushing the materials in the collecting hopper 493 into the inner tube 471, and then being stirred and conveyed between the inner tube 471, the middle tube 472 and the outer tube 473.

[0066] As Figure 9 and Figure 10As shown, the mixing and conveying mechanism 4 also includes a stirring paddle 494, a stirring rod passes through the stirring paddle 494 and is rotatably connected thereto, a fan-shaped groove 4941 is provided in the stirring paddle 494, a positioning block 495 is provided on the stirring rod and is located in the fan-shaped groove 4941, and elastic elements 496 are provided between both ends of the positioning block 495 and both ends of the fan-shaped groove 4941.

[0067] The stirring paddle 494 is designed with a fan-shaped groove 4941 structure. On the stirring rod, a positioning block 495 is set at the position corresponding to the fan-shaped groove 4941. The positioning block 495 and the stirring rod are rigidly connected by welding, key connection or other reliable fixing methods to ensure that the positioning block 495 can rotate synchronously with the stirring rod.

[0068] Elastic elements 496 are respectively provided between the two ends of the positioning block 495 and the two ends of the fan-shaped groove 4941. When the stirring rod drives the stirring paddle 494 to rotate, the positioning block 495 moves in the fan-shaped groove 4941 along with the rotation of the stirring rod. Due to the presence of the elastic elements 496 at both ends of the positioning block 495, the stirring paddle 494 needs to continuously overcome the elastic force applied by the elastic elements 496 during the rotation process. This elastic force causes the stirring paddle 494 to generate periodic vibration or swing during the rotation process.

[0069] From the perspective of fluid dynamics and material mixing principles, the vibration or swing of the stirring paddle 494 can significantly increase the turbulence of the fluid or material during the mixing and conveying process. The increase in turbulence promotes the mixing and diffusion of materials at the microscopic level, allowing materials of different components to more fully contact and blend with each other. Compared with traditional stirring methods, this design of driving the stirring paddle 494 to vibrate or swing through the elastic element 496 can effectively improve the mixing uniformity of the materials.

[0070] The method for automatically batching and mixing recycled raw materials based on the proportion control of the material tank 1 adopts the automatic batching and mixing device for recycled raw materials based on the proportion control of the material tank 1, and comprises the following steps:

[0071] Step 1: The suction mechanism 3 sucks the material from the material tank 1 and discharges it into the mixing and conveying mechanism 4. During this process, the weighing mechanism 2 weighs the discharge amount and closes the suction mechanism 3 after reaching the standard;

[0072] Step 2: the materials are mixed in the mixing and conveying mechanism 4 and are respectively sent to different drying mechanisms 5 for drying in a predetermined proportion.

[0073] The above embodiments merely represent one or several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the appended claims.

Claims

1. An automatic batching and mixing device for recycled raw materials based on proportion control of a storage tank, characterized in that, It includes a material tank, a weighing mechanism, a material suction mechanism, a mixing and conveying mechanism, and a drying mechanism. There are at least two material tanks and drying mechanisms. The material suction mechanism is connected to the material tank and the mixing and conveying mechanism, the mixing and conveying mechanism is respectively connected to the drying mechanism, and the weighing mechanism is arranged on the material tank for measuring the discharge amount. The mixing and conveying mechanism has a horizontally arranged mixing and conveying cavity. The mixing and conveying cavity has a feed inlet connected to the material suction mechanism and a discharge outlet connected to the drying mechanism. A rotatable rotating member is arranged in the mixing and conveying cavity. A spiral ribbon coaxial with the rotating member is arranged on the rotating member. The spiral ribbon is in clearance fit with the inner wall of the mixing and conveying cavity. Stirring rods are arranged between the inner side of the spiral ribbon and the outer surface of the rotating member. When the rotating member rotates, the spiral ribbon guides the movement of the material in the mixing and conveying cavity while the stirring rods agitate the material. The stirring rods penetrate through the stirring paddles and are rotatably connected thereto. Sector-shaped grooves are arranged in the stirring paddles. Positioning blocks located in the sector-shaped grooves are arranged on the stirring rods. Elastic elements are arranged between both ends of the positioning blocks and both ends of the sector-shaped grooves. The bottom end of the material tank is provided with feet supported on the ground. The weighing mechanism includes a pressure sensor arranged between the feet and the ground.

2. The automatic batching and mixing device for recycled raw materials based on proportion control of a storage tank according to claim 1, wherein, The stirring rods extend along the radial direction of the rotating member. The stirring rods are arranged along the spiral direction of the spiral ribbon. One end of the stirring rod is connected to the outer surface of the rotating member, and the other end of the stirring rod is connected to the spiral ribbon.

3. The automatic batching and mixing device for recycled raw materials based on proportion control of the material tank according to claim 2, wherein, The mixing and conveying cavity constitutes a baffled channel along its length direction. The spiral ribbon is arranged in the baffled channel, and the material moves back and forth in the mixing and conveying cavity for mixing.

4. The automatic batching and mixing device for recycled raw materials based on proportion control of material tanks according to claim 3, characterized in that, The mixing and conveying cavity has an inner cavity, a middle cavity, and an outer cavity coaxially arranged from the inside out in sequence. One end of the inner cavity is connected to the material suction mechanism to form a feed inlet. The other end of the inner cavity is connected to one end of the middle cavity. The other end of the middle cavity is connected to the outer cavity. The discharge outlet is located at the other end of the outer cavity.

5. The automatic batching and mixing device for recycled raw materials based on proportion control of storage tanks according to claim 3 or 4, characterized in that, The mixing and conveying mechanism includes an inner pipe, a middle pipe, and an outer pipe coaxially arranged from the inside out. A closing disc is arranged at one end of the outer pipe. A closing ring rotatably connected to the inner pipe coaxially is arranged at the other end of the outer pipe. A right-side material guiding channel is arranged at one end of the inner pipe. A left-side material guiding channel is formed between one end of the middle pipe and the closing ring.

6. The automatic batching and mixing device for recycled raw materials based on the proportion control of the material tank according to claim 5, characterized in that, A material stirring driving mechanism for driving the inner pipe and the middle pipe to rotate coaxially in opposite directions is arranged on the closing disc. The spiral ribbon is arranged on the outer surfaces of the inner pipe and the middle pipe.

7. The automatic batching and mixing device for recycled raw materials based on proportion control of material tanks according to claim 5, characterized in that, The mixing and conveying mechanism further includes an auger extending into the inner pipe. A collecting hopper with an upward opening is arranged at the feed inlet. One end of the auger extends into the collecting hopper. A feeding motor for driving the auger to rotate is also arranged on the collecting hopper.

8. The automatic batching and mixing method of recycled raw materials based on the proportion control of the material tank, characterized in that, Using the automatic batching and mixing device for recycled raw materials based on material tank ratio control according to any one of claims 1-7, includes the following steps: Step 1, the material suction mechanism sucks the material from the material tank and discharges it into the mixing and conveying mechanism. During this process, the weighing mechanism weighs the discharge amount and closes the material suction mechanism after reaching the standard. Step 2, the material is mixed in the mixing and conveying mechanism and sent to different drying mechanisms for drying in a predetermined ratio.

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