Automatic proportioning and mixing device and method for regenerated raw materials based on charging bucket proportion control

Abstract

The invention relates to the technical field of batching and mixing, in particular to an automatic batching and mixing device and method for regenerated raw materials based on material tank proportion control, and automatic suction of the raw materials of a material tank is realized through the automatic batching and mixing device based on the material tank and a material suction device; each charging bucket adopts a weighing discharging mechanism, so that accurate discharging according to a preset proportion is ensured; after being homogenized and mixed through the mixing and conveying channel, the discharged materials are automatically distributed to enter the drying mechanism; the drying mechanism not only can discharge independently, but also can work in a combined manner, the final mixed material can meet the proportion required by production by adjusting the discharging proportion, and through the full-automatic mechanical control scheme, the problem of uniform dispersion of the material 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] In order to solve the problems of the prior art, the present invention provides an automatic batching and mixing device for recycled raw materials based on material tank ratio control, including 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 at least two drying mechanisms. The material suction mechanism is connected to the material tank and the mixing and conveying mechanism, and the mixing and conveying mechanism is connected to the distribution and drying mechanism. The weighing mechanism is arranged on the material tank for measuring the discharge amount; the mixing and conveying mechanism has a laterally arranged mixing and conveying chamber, and the mixing and conveying chamber has a feed inlet connected to the material suction mechanism and a discharge inlet connected to the distribution and drying mechanism. A rotatable rotating part is arranged in the mixing and conveying chamber, and a spiral belt coaxial with the rotating part is arranged on the rotating part. The spiral belt is gap-matched with the inner wall of the mixing and conveying chamber, and a stirring rod is arranged between the inner side of the spiral belt and the outer surface of the rotating part. When the rotating part rotates, the spiral belt guides the material in the mixing and conveying chamber to move, and the stirring rod stirs the material.

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

[0007] Preferably, the stirring rod extends radially of the rotating member, is 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 chamber forms a deflection channel along its length direction, the spiral ribbon is arranged in the deflection channel, and the materials move back and forth in the mixing and conveying chamber to be mixed.

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

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

[0011] Preferably, a stirring drive mechanism for driving the inner tube and the middle tube to rotate coaxially and in opposite directions is provided on the closing disk, and the spiral belt is provided on the outer surfaces of the inner tube and the middle tube.

[0012] Preferably, the mixing and conveying mechanism also includes an auger extending into the inner tube, a collecting bucket with an upward opening is provided at the discharge port, one end of the auger extends into the collecting bucket, and a feeding motor for driving the auger to rotate is also provided on the collecting bucket.

[0013] Preferably, the mixing and conveying mechanism also includes a stirring paddle, the stirring shaft passes through the stirring paddle and is rotatably connected thereto, a fan-shaped groove is arranged in the stirring paddle, a positioning block is arranged on the stirring shaft and is located in the fan-shaped groove, and elastic elements are arranged between both ends of the positioning block and both ends of the fan-shaped groove.

[0014] The method for automatically batching and mixing recycled raw materials based on material tank ratio control adopts an automatic batching and mixing device for recycled raw materials based on material tank ratio control, and comprises the following steps: Step 1: The 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 stops sucking the material after it reaches the standard. Step 2: the materials are mixed in the mixing and conveying mechanism and distributed in a predetermined proportion to be sent to different drying mechanisms for drying.

[0015] Compared with the prior art, the present application has the following beneficial effects: the present application realizes automatic absorption of raw materials from the material tank through the material suction device; each material tank adopts a weight-based discharging mechanism to ensure accurate discharge according to the preset ratio; the discharged materials are homogenized and mixed simultaneously through the mixing and conveying channel, and then automatically distributed into the drying tower; the drying tower can discharge materials individually or in combination, and by adjusting the discharge ratio, the final mixed materials can meet the required production ratio. Through the above fully automatic mechanized control scheme, perfect mixing of materials and precise control of proportions can be achieved, thereby stably ensuring product quality.

[0016] The present application also sets a baffle channel in the mixing and conveying mechanism, so that the moving distance of the material in the baffle channel is increased, and the contact time with the spiral ribbon and the stirring rod is correspondingly prolonged. In this process, the material is continuously subjected to the axial stirring of the spiral ribbon and the strong shearing and dispersion of the stirring rod, so that the stirring and mixing time of the material can be significantly improved.

[0017] The present application also sets a stirring paddle on the stirring shaft that needs to overcome elastic force when rotating, so that the stirring paddle is subjected to elastic force when rotating, which will cause vibration or swing, increase the turbulence of the fluid or material, 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 of different viscosities and densities, and improve the versatility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereoscopic diagram of the mixing and conveying mechanism in the automatic batching and mixing device for renewable raw materials based on material tank ratio control of the present invention; Figure 2 It is a three-dimensional cross-sectional view of a mixing and conveying mechanism in the automatic batching and mixing device for renewable raw materials based on material tank ratio control of the present invention; Figure 3 It is a cross-sectional view of a mixing and conveying mechanism in the automatic batching and mixing device for renewable raw materials based on material tank ratio control of the present invention; Figure 4 yes Figure 3 A local enlarged view of point A; Figure 5 yes Figure 3 A partial enlarged view of point B; Figure 6 It is a schematic diagram of the mixing and conveying mechanism in the automatic batching and mixing device for renewable raw materials based on material tank ratio control of the present invention after removing the outer tube; Figure 7 yes Figure 6 A partial enlarged view of point C; Figure 8 It is a schematic diagram of the mixing and conveying mechanism in the automatic batching and mixing device for renewable raw materials based on material tank ratio control of the present invention after removing the outer tube and the middle tube; Fig. 9 It is a three-dimensional exploded view of a stirring paddle in a mixing and conveying mechanism in an automatic batching and mixing device for renewable raw materials based on material tank ratio control of the present invention; Fig.10 It is a top view of a stirring paddle in a mixing and conveying mechanism in an automatic batching and mixing device for renewable raw materials based on material tank ratio control of the present invention; Fig.11 It is a schematic diagram of the automatic batching and mixing device for recycled raw materials based on material tank ratio control of the present invention.

[0019] The numbers in the figure are: 1, material tank; 11, foot; 2, weighing mechanism; 3, material suction mechanism; 4, mixing and conveying mechanism; 41, feed port; 42, discharge port; 43, rotating member; 44, screw ribbon; 45, stirring rod; 461, inner chamber; 462, middle chamber; 463, outer chamber; 471, inner tube; 472, middle tube; 473, outer tube; 474, closing disk; 475, closing ring; 476, Right material guide channel; 478, left material guide channel; 481, partition plate; 482, driving motor; 483, driving gear; 484, driven gear; 485, inner ring gear; 491, auger; 492, feeding motor; 493, collecting bucket; 494, stirring paddle; 4941, fan-shaped groove; 495, positioning block; 496, elastic element; 5, drying mechanism; 61, three-way valve; 63, diverter valve. DETAILED DESCRIPTION

[0020] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] like Figure 1 , Figure 2 , Figure 3 and Fig.11As shown, an automatic batching and mixing device for recycled raw materials based on proportional control of a material tank 1 includes a material tank 1, a weighing mechanism 2, a material suction mechanism 3, a mixing and conveying mechanism 4 and a drying mechanism 5. The material tank 1 and the drying mechanism are at least two each. The material suction mechanism 3 connects the material tank 1 and the mixing and conveying mechanism 4, and the mixing and conveying mechanism 4 is connected to the distribution and drying mechanism 5. The weighing mechanism 2 is arranged on the material tank 1 for measuring the discharge amount; the mixing and conveying mechanism 4 has a laterally arranged mixing and conveying chamber, and the mixing and conveying chamber has a feed port 41 connected to the material suction mechanism 3 and a discharge port 42 connected to the distribution and drying mechanism 5. A rotatable rotating member 43 is arranged in the mixing and conveying chamber, and a spiral belt 44 coaxial with the rotating member 43 is arranged on the rotating member 43. The spiral belt 44 is gap-matched with the inner wall of the mixing and conveying chamber, and 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 chamber to move while the stirring rod 45 stirs the material.

[0022] Two sets of suction devices (each set is configured with a one-to-two structure) are used to connect the material tanks 1 through pipelines. The suction mechanism 3 uses vacuum adsorption or mechanical pumping technology to extract the raw materials in the material tank 1 as needed and send them to the next process.

[0023] Each material tank 1 is equipped with an independent weighing sensor or a mechanical weighing mechanism 2, which can achieve accurate measurement.

[0024] It also includes a three-way valve 61, which is linked to the weighing mechanism 2. When the raw materials in the material tank 1 reach the preset discharging conditions, the three-way valve 61 is automatically controlled to connect the suction mechanism 3 with the corresponding material tank 1 (using pneumatic, electromagnetic or hydraulic mechanisms) and open to release the material according to the preset ratio, ensuring that the discharge amount of each material tank 1 strictly meets the ratio requirements.

[0025] The discharged raw materials enter a special mixing and conveying channel. The interior of the channel is designed as a spiral conveyor or belt conveyor, with built-in fixed or adjustable stirring blades to achieve continuous stirring and uniform mixing during the conveying process. The stirring blades rotate synchronously with the conveying device through a mechanical connecting rod to ensure that the materials discharged from each tank 1 are fully mixed to form a uniform mixture.

[0026] The drying mechanism 5 includes two sets of drying towers. The mixed materials are automatically distributed into the two sets of drying towers through the conveying system. Each drying tower adopts independent temperature control, air flow regulation and material distribution devices, which can be operated independently or in combination to achieve proportion adjustment and homogeneous drying of materials during the drying process.

[0027] By using a diverter valve 63 or a rotary disk distribution mechanism, the mixed material is fed into two drying towers in batches according to the preset instructions of the control system. The two drying towers can dry materials with the same ratio at the same time, and can also input materials with different ratios into the two drying towers, thereby improving the production efficiency of the recycled raw materials and ensuring the stability of the ratio of the final dried product.

[0028] Each module (tank 1, suction mechanism 3, weighing mechanism 2, mixing and conveying mechanism 4, drying mechanism 5) realizes automatic coordination through mechanical linkage and preset parameters. Specifically, each mechanical component is linked and synchronized with time through a simple PLC or logic controller to ensure the stability and accuracy of the overall operation.

[0029] The mixing and conveying mechanism 4 has a mixing and conveying chamber arranged in a transverse direction. The material can enter the mixing and conveying chamber smoothly and orderly at a precisely controllable flow rate and speed under negative pressure or positive pressure. The discharge port 42 is closely connected with the distribution and drying mechanism 5, following the logic of material transmission and process connection, and providing a stable and adaptive material output for the subsequent material distribution and drying processing links.

[0030] The screw belt 44 and the inner wall of the mixing and conveying chamber are matched with a gap, which can not only ensure the smooth operation of the screw belt 44 during rotation and avoid interference and collision with the inner wall, but also further promote the initial mixing and dispersion of the material through the shearing effect at the gap during material conveying.

[0031] When the rotating member 43 starts to rotate under the drive of the driving device, the spiral belt 44 guides the material in the mixing and conveying chamber to move in a directional manner along a specific spiral path by virtue of the propulsion force of its spiral structure. During the movement of the material, the material is initially mixed in the conveying direction by axial stirring. At the same time, the stirring rod 45 generates strong shear force and turbulence effect in the space area inside the spiral belt 44 by high-speed rotation. This shear force can effectively disperse the agglomerated material particles, and the turbulence effect further promotes the mixing and diffusion of the material at the microscopic level, so that the material in the mixing and conveying chamber is simultaneously subjected to the axial stirring of the spiral belt 44 and the strong shearing and dispersing effect of the stirring rod 45, thereby achieving deep stirring and uniform mixing of the material, providing high-quality mixed materials for the subsequent distribution and drying process, and significantly improving the efficiency of the entire production process and the stability of product quality.

[0032] like Fig.11 As shown, the bottom of the material tank 1 is provided with a foot 11 supported on the ground, and the weighing mechanism 2 includes a pressure sensor arranged 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 weight of the material tank 1 and the material inside it can be accurately sensed and measured.

[0033] like Figure 6 and Figure 7 As shown, the stirring rod 45 extends radially along the rotating member 43 , is 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 .

[0034] Through the radially extended layout, the stirring rod 45 can fully utilize the shear force generated by the centrifugal force and the circular motion when the rotating part 43 rotates at a high speed, exert a more extensive and in-depth stirring effect on the material, effectively expand the stirring range, and improve the uniformity of material mixing.

[0035] like Figure 3 As shown, the mixing and conveying chamber forms a deflection channel along its length direction, and the spiral belt 44 is arranged in the deflection channel. The materials move back and forth and are mixed in the mixing and conveying chamber.

[0036] Under the condition of limited equipment length, the distance that the material moves in the baffle channel can be greatly increased. For example, compared with the traditional straight-cylinder conveying channel, the baffle channel can extend the distance that the material moves. The significant increase in the distance that the material moves directly leads to the effective extension of the stirring and mixing time. Inside the baffle channel, two key material handling components, a spiral ribbon 44 and a stirring rod 45, are provided. During the operation of the equipment, the spiral ribbon 44 can not only effectively push the material for directional transportation along the baffle channel through its own rotational motion, but also use its spiral structure to produce an axial stirring effect on the material, thereby promoting the initial mixing of the material during the conveying process. The stirring rod 45 is distributed in the baffle channel, and generates strong shear force and turbulence effects through high-speed rotation, so as to deeply stir and disperse the material.

[0037] like Figure 2 and Figure 3 As shown, the mixing and conveying chamber has an inner chamber 461, a middle chamber 462 and an outer chamber 463 which are coaxially arranged in sequence from the inside to the outside, one end of the inner chamber 461 is connected to the suction mechanism 3 to form a feed port 41, the other end of the inner chamber 461 is connected to one end of the middle chamber 462, the other end of the middle chamber 462 is connected to the outer chamber 463, and the discharge port 42 is located at the other end of the outer chamber 463.

[0038] One end of the inner chamber 461 is connected to the suction mechanism 3 through a specific connection method, which is designed based on the principle of fluid dynamics to ensure that stable flow and pressure conditions can be maintained during the material suction process, thereby forming an efficient and stable feed port 41. With the power provided by the suction mechanism 3, the material can smoothly enter the inner chamber 461 at a precisely controllable rate along the designed conveying path.

[0039] The other end of the inner chamber 461 is connected to one end of the middle chamber 462. This ensures that the material can smoothly transition between different chambers and reduces the energy loss and flow resistance of the material during the transmission process. After the material is initially transported and distributed in the inner chamber 461, it enters the middle chamber 462 in an orderly manner through the connecting portion.

[0040] Rotatable spiral belts 44 are disposed in both the middle chamber 462 and the outer chamber 463 , so as to improve the stirring efficiency of the materials in the middle chamber 462 and the outer chamber 463 .

[0041] like Figure 3 and Figure 5 As shown, the mixing and conveying mechanism 4 includes an inner tube 471, a middle tube 472 and an outer tube 473 which are coaxially arranged from the inside to the outside, a closing disk 474 is arranged at one end of the outer tube 473, a closing ring 475 which is coaxially rotatably connected to the inner tube 471 is arranged at the other end of the outer tube 473, a right-side material guide channel 476 is arranged at one end of the inner tube 471, and a left-side material guide channel 478 is formed between one end of the middle tube 472 and the closing ring 475.

[0042] One end of the outer tube 473 is equipped with a closing disk 474. The design of the closing disk 474 ensures that the connection end between the closing disk 474 and the outer tube 473 is completely closed, effectively preventing the material from leaking from this end. The other end of the outer tube 473 is provided with a closing ring 475, which is coaxially connected to the inner tube 471 through a specific rotation connection method. This rotation connection method not only ensures that the inner tube 471 can flexibly rotate coaxially with respect to the outer tube 473, but also maintains a good sealing performance between the two, preventing the material from leaking during the rotation process.

[0043] A right material guide channel 476 is provided at one end of the inner tube 471 to ensure that the material can enter the mixing space between the inner tube 471 and the middle tube 472 through the right material guide channel 476, and in the subsequent conveying process, the rotation of the inner tube 471 and the synergy with other components are used to achieve preliminary mixing and directional conveying of the material.

[0044] A left material guide channel 478 is formed between one end of the middle tube 472 and the closed ring 475. Under the action of a specific pressure difference and flow driving force, the material can smoothly enter between the outer surface of the middle tube 472 and the inner surface of the outer tube 473 from the left material guide channel 478, and further mix and blend with the material in the inner tube 471 during the subsequent operation. This multi-channel, layered structural design greatly improves the material processing capacity and mixing effect of the mixing and conveying mechanism 4.

[0045] like Figure 4As shown, a stirring driving mechanism for driving the inner tube 471 and the middle tube 472 to rotate coaxially and in opposite directions is disposed on the closing disk 474 , and the spiral belt 44 is disposed on the outer surfaces of the inner tube 471 and the middle tube 472 .

[0046] The stirring drive mechanism includes a driving motor 482 arranged at the outer end of the closed disk 474, a driving shaft coaxially connected to the closed disk 474 is arranged in the closed disk 474, a partition plate 481 is also arranged at the inner end of the closed disk 474, the partition plate 481 is sealed and rotated with the inner wall of the middle tube 472, a driving gear 483 coaxially fixedly connected to the driving shaft and a driven gear 484 distributed circumferentially along the driving gear 483 are arranged between the partition plate 481 and the closed disk 474, the driving gear 483 and the driven gear 484 are meshed, and an inner gear ring 485 coaxially fixedly connected to the middle tube 472 is arranged inside one end of the middle tube 472, the inner gear ring 485 is located between the partition plate 481 and the closed disk 474, and the inner gear ring 485 is meshed with the driven gear 484.

[0047] A partition plate 481 is provided at the inner end of the closing plate 474. The partition plate 481 and the inner wall of the middle tube 472 are sealed and rotated together. Through the sealing material and structural design, the partition plate 481 can be flexibly rotated relative to the inner wall of the middle tube 472, and a good sealing effect is achieved, which effectively prevents material leakage at this position and maintains the stability of the material flow environment inside the mixing and conveying mechanism 4.

[0048] In the space between the partition plate 481 and the closing plate 474, there are arranged a driving gear 483 and a plurality of driven gears 484 distributed circumferentially along the driving gear 483. The driving gear 483 is coaxially fixed with the driving shaft through a key connection or other reliable fixed connection method, thereby ensuring that the driving gear 483 can rotate synchronously with the driving shaft and transmit the torque of the driving shaft to the driving gear 483.

[0049] An inner gear ring 485 is provided inside one end of the middle tube 472, and the inner gear ring 485 and the middle tube 472 are coaxially fixedly connected by welding, shrink sleeve or other suitable fixing processes to ensure that the inner gear ring 485 can rotate synchronously with the middle tube 472. The inner gear ring 485 is located between the partition plate 481 and the closing plate 474, and is meshed with the driven gear 484. When the driving motor 482 is running, the driving shaft drives the driving gear 483 to rotate, and the driving gear 483 transmits the torque to the driven gear 484 through the meshing action with the driven gear 484, and the driven gear 484 then drives the middle tube 472 to rotate through the meshing with the inner gear ring 485. At the same time, due to the correlation between the structural design of the inner tube 471 and the middle tube 472 and the transmission layout of the stirring drive mechanism, the coaxial reverse rotation of the inner tube 471 and the middle tube 472 is achieved. The spiral belts 44 on the outer surfaces of the inner tube 471 and the middle tube 472 can rotate in opposite directions, thereby mixing and conveying the materials.

[0050] like Figure 8 As shown, the mixing and conveying mechanism 4 also includes an auger 491 extending into the inner tube 471, and a collecting bucket 493 with an upward opening is provided at the discharge port 42. One end of the auger 491 extends into the collecting bucket 493, and a feeding motor 492 for driving the auger 491 to rotate is also provided on the collecting bucket 493.

[0051] As an important material propulsion component, the auger 491 is disposed 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 material during the rotation process, so that the material moves in the inner tube 471 toward the discharge end in an efficient and orderly manner.

[0052] At the position of the discharge port 42, a collecting bucket 493 with an opening facing upward is provided.

[0053] In order to drive the auger 491 to realize rotational motion, a feeding motor 492 is installed on the collecting bucket 493. The feeding motor 492 is 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, a belt drive or a gear drive, so as to ensure that the power output by the motor can be efficiently and accurately transmitted to the auger 491, and the auger 491 is driven to rotate stably at a set speed. In this way, the material in the collecting bucket 493 is pushed into the inner tube 471, and then stirred and transported between the inner tube 471, the middle tube 472 and the outer tube 473.

[0054] like Fig. 9 and Fig.10 As shown, the mixing and conveying mechanism 4 also includes a stirring paddle 494, a stirring shaft 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 located in the fan-shaped groove 4941 is provided on the stirring shaft, and elastic elements 496 are provided between both ends of the positioning block 495 and both ends of the fan-shaped groove 4941.

[0055] The stirring paddle 494 is internally designed with a fan-shaped groove 4941 structure. On the stirring shaft, a positioning block 495 is provided at the position corresponding to the fan-shaped groove 4941. The positioning block 495 is rigidly connected to the stirring shaft by welding, key connection or other reliable fixing methods to ensure that the positioning block 495 can rotate synchronously with the stirring shaft.

[0056] 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 shaft 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 shaft. 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.

[0057] 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.

[0058] 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: 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 stops sucking the material after it reaches the standard. Step 2: the materials are mixed in the mixing and conveying mechanism 4 and distributed in a predetermined proportion to be sent to different drying mechanisms 5 for drying.

[0059] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the protection scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. Automatic batching and mixing device for recycled raw materials based on material tank ratio control, 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 at least two drying mechanisms. The material suction mechanism connects the material tank and the mixing and conveying mechanism, and the mixing and conveying mechanism is connected to the distribution and drying mechanism. The weighing mechanism is arranged on the material tank for measuring the discharge amount. The mixing and conveying mechanism has a transversely arranged mixing and conveying chamber, and the mixing and conveying chamber has a feed inlet connected to the material suction mechanism and a discharge inlet connected to the distribution and drying mechanism. A rotatable rotating part is arranged in the mixing and conveying chamber, and a spiral belt coaxial with the rotating part is arranged on the rotating part. The spiral belt is clearance-matched with the inner wall of the mixing and conveying chamber, and a stirring rod is arranged between the inner side of the spiral belt and the outer surface of the rotating part. When the rotating part rotates, the spiral belt guides the material in the mixing and conveying chamber to move, and the stirring rod stirs the material.

2. The automatic batching and mixing device for renewable raw materials based on material tank ratio control according to claim 1 is characterized in that: The bottom end of the material tank is provided with a foot supported on the ground, and the weighing mechanism comprises a pressure sensor arranged between the foot and the ground.

3. The automatic batching and mixing device for renewable raw materials based on material tank ratio control according to claim 1 is characterized in that: The stirring rod extends radially along the rotating member, is 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.

4. The automatic batching and mixing device for recycled raw materials based on material tank ratio control according to claim 3 is characterized in that: The mixing and conveying chamber forms a baffle channel along its length direction, the spiral ribbon is arranged in the baffle channel, and the materials are moved back and forth and mixed in the mixing and conveying chamber.

5. The automatic batching and mixing device for renewable raw materials based on material tank ratio control according to claim 4 is characterized in that: The mixing and conveying chamber comprises an inner chamber, a middle chamber and an outer chamber which are coaxially arranged in sequence from the inside to the outside, one end of the inner chamber is connected to a suction mechanism to form a feed port, the other end of the inner chamber is connected to one end of the middle chamber, the other end of the middle chamber is connected to the outer chamber, and the discharge port is located at the other end of the outer chamber.

6. The automatic batching and mixing device for renewable raw materials based on material tank ratio control according to claim 4 or 5, characterized in that: The mixing and conveying mechanism includes an inner tube, a middle tube and an outer tube coaxially arranged from the inside to the outside, a closed disk is arranged at one end of the outer tube, a closed ring coaxially rotatably connected to the inner tube is arranged at the other end of the outer tube, a right-side material guide channel is arranged at one end of the inner tube, and a left-side material guide channel is formed between one end of the middle tube and the closed ring.

7. The automatic batching and mixing device for renewable raw materials based on material tank ratio control according to claim 6 is characterized in that: The closing disk is provided with a stirring driving mechanism for driving the inner tube and the middle tube to rotate coaxially and in opposite directions, and the spiral belts are arranged on the outer surfaces of the inner tube and the middle tube.

8. The automatic batching and mixing device for renewable raw materials based on material tank ratio control according to claim 6 is characterized in that: The mixing and conveying mechanism also includes an auger extending into the inner tube, a collecting bucket with an upward opening is provided at the discharge port, one end of the auger extends into the collecting bucket, and a feeding motor for driving the auger to rotate is also provided on the collecting bucket.

9. The automatic batching and mixing device for renewable raw materials based on material tank ratio control according to any one of claims 1 to 5, characterized in that: The mixing and conveying mechanism also includes a stirring paddle, a stirring shaft passes through the stirring paddle and is rotatably connected thereto, a fan-shaped groove is arranged in the stirring paddle, a positioning block located in the fan-shaped groove is arranged on the stirring shaft, and elastic elements are arranged between both ends of the positioning block and both ends of the fan-shaped groove.

10. A method for automatically batching and mixing recycled raw materials based on tank ratio control, characterized in that: The automatic batching and mixing device for renewable raw materials based on material tank ratio control as described in any one of claims 1 to 9 comprises the following steps: Step 1: The 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 stops sucking the material after it reaches the standard. Step 2: the materials are mixed in the mixing and conveying mechanism and distributed in a predetermined proportion to be sent to different drying mechanisms for drying.

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