A material supply system

Abstract

The application discloses a material supply system, which comprises a first feeding machine, a second feeding machine, a mixer and a material shaping machine connected in sequence; the first feeding machine comprises an inlet, an outlet and a feeding bin, the inlet and the outlet of the first feeding machine are respectively located at the upper and lower ends of the feeding bin, the inlet of the first feeding machine is provided with a vacuum generator for feeding into the feeding bin, and the outlet is provided with a discharging valve; the second feeding machine comprises a material conveying mechanism capable of adjusting the material conveying flow and a weighing device arranged at the outlet of the material conveying mechanism, and the material conveying mechanism and the weighing device are coupled to the same controller. The material supply system is assembled by multiple devices to form a working channel for sequentially conveying materials, and the materials are gradually precisely dosed, uniformly mixed and shaped in the working channel. The first feeding machine and the second feeding machine are combined with each other and complement each other, precise feeding on demand can be realized, the continuous production of the materials is strongly guaranteed, and the processing quality and the processing efficiency in subsequent equipment of the materials are improved.

Description

Technical Field

[0001] This application relates to the field of material transportation technology, and in particular to a material supply system. Background Technology

[0002] Currently, the production of oral solid dosage forms is mostly done in batches, with discontinuous production processes. In other words, each stage of the production process is carried out intermittently, which greatly restricts production efficiency, cost, and product quality.

[0003] Taking the tableting process of solid dosage forms as an example, it mainly includes two steps: material preparation and tablet compression. Currently, most materials are prepared using wet granulation. In the material preparation stage, a specific dosage of materials needs to be mixed together and stored in a hopper. Then, the materials are manually fed into the tableting machine from the hopper or automatically fed into the hopper for tableting. Because the mixed materials cannot all enter the tableting machine in a short time, some materials will remain in the hopper for a long time. This can easily lead to changes in the density, moisture content, and other properties of the materials, affecting product quality. In addition, when the materials are mixed and stored in the hopper, their morphology may also change, which is detrimental to the subsequent tableting effect. Summary of the Invention

[0004] The purpose of this application is to provide a material supply system that can provide a continuously processed working channel for materials, in which materials can be accurately dispensed, uniformly mixed and sized at different positions of the working channel, providing a reliable guarantee for subsequent operations such as tableting.

[0005] To achieve the above objectives, this application provides a material supply system, comprising a first feeder, a second feeder, a mixer, and a baler connected in sequence; the first feeder includes an inlet, an outlet, and a feeding hopper, the inlet and outlet of the first feeder being located at the upper and lower ends of the feeding hopper, respectively, the inlet of the first feeder being provided with a vacuum generator for feeding material into the feeding hopper, and the outlet being provided with a discharge valve; the second feeder includes a conveying mechanism with adjustable conveying flow rate and a weighing device located at the outlet of the conveying mechanism, the conveying mechanism and the weighing device being coupled to the same controller.

[0006] In some embodiments, the outlet of the first feeder and the inlet of the second feeder are spaced apart vertically and connected by a flexible sleeve; the lower end of the flexible sleeve surrounds and overlaps the inlet of the second feeder.

[0007] In some embodiments, the mixer includes a first double concentric screw mechanism; the first double concentric screw mechanism includes a screw feeding rod I and a screw turning rod I; the screw turning rod I is sleeved on the screw feeding rod I; both the screw feeding rod I and the screw turning rod I are connected to a screw drive device I.

[0008] In some embodiments, the screw feeder I is a screw rod for feeding material toward the outlet of the mixer, and the screw turning rod I is a screw rod for turning the material in place.

[0009] In some embodiments, the spiral tilting bar I includes:

[0010] Multiple external spiral curve rods I; any one external spiral curve rod I is spirally distributed around the spiral feeding rod I as the axis, all external spiral curve rods I are distributed at intervals along the spiral feeding rod I, and the spiral directions of any adjacent external spiral curve rods I are opposite to achieve reverse feeding;

[0011] Multiple first stop levers I; one end of any first stop lever I is located at the outer spiral curve lever I, and the other end extends toward the center of the outer spiral curve lever I;

[0012] Multiple second stop rods I; any second stop rod I is located between two adjacent outer spiral curve rods I, and any second stop rod I extends along the spiral feed rod I.

[0013] In some embodiments, the screw feeder I and the screw tilter I are connected to the same screw drive device I via a differential transmission assembly; the mixer also includes a torque limiting coupling I, which is disposed between the screw drive device I and the first double concentric screw mechanism;

[0014] The spiral feed rod I includes a mixing conveying central shaft, a mixing conveying section rod, a mixing conveying docking column, and a mixing conveying horizontal turning rod; the mixing conveying section rod is spirally wound around the mixing conveying central shaft; the mixing conveying docking column extends radially along the mixing conveying central shaft, and its two ends are respectively connected to the mixing conveying section rod and the mixing conveying central shaft; the mixing conveying horizontal turning rod extends axially along the mixing conveying central shaft, and at least one end is connected to the mixing conveying section rod.

[0015] In some embodiments, the material conveying mechanism includes a second double concentric screw mechanism; the second double concentric screw mechanism includes a screw feeding rod II and a screw turning rod II; the screw turning rod II is sleeved on the screw feeding rod II; both the screw feeding rod II and the screw turning rod II are connected to a screw drive device II; the screw turning rod II has the same structure as the screw turning rod I; the screw feeding rod II is in the shape of a spiral and the trajectory is continuous;

[0016] The second double concentric screw mechanism is laterally distributed; the weighing device includes a weighing platform for detecting the real-time weight of the material to calibrate the real-time flow rate; the weighing platform is located below the front end of the second double concentric screw mechanism.

[0017] In some embodiments, a filter and a backflushing device for backflushing the filter along the material filtration direction are provided between the vacuum generator and the feed hopper; the filter is located between the air inlet of the vacuum generator and the feed hopper and is used to prevent material from entering the vacuum generator.

[0018] In some embodiments, the device further includes an atomizing humidifier connected to the mixer; the atomizing humidifier is provided with an atomizing nozzle, the mixer is provided with a mixing chamber, and the atomizing nozzle is located in the mixing chamber.

[0019] In some embodiments, the outlet of the material handling machine is provided with a discharge pipe and a material detector; the discharge pipe is a double-bend pipe, and the bend angle of any bend in the double-bend pipe is less than 90°; the material detector is located inside the double-bend pipe and at the bend of the double-bend pipe.

[0020] Compared to the aforementioned background technology, the material supply system provided in this application includes a first feeder, a second feeder, a mixer, and a baler connected in sequence; the first feeder includes an inlet, an outlet, and a feeding hopper, with the inlet and outlet of the first feeder located at the upper and lower ends of the feeding hopper, respectively; the inlet of the first feeder is equipped with a vacuum generator for feeding material into the feeding hopper, and the outlet is equipped with a discharge valve; the second feeder includes a conveying mechanism with adjustable conveying flow rate and a weighing device located at the outlet of the conveying mechanism; the conveying mechanism and the weighing device are coupled to the same controller, which can realize the adjustment of the conveying flow rate of the conveying mechanism according to the detection data of the weighing device.

[0021] In the material supply system provided in this application, the first feeder, the second feeder, the mixer, and the baler are connected sequentially, providing a continuously processed working channel for the materials. The materials can not only be conveyed sequentially within this working channel formed by the aforementioned equipment, but also achieve precise batching, uniform mixing, and baling, meeting the requirements of continuous production and providing reliable support for subsequent operations such as tableting. Furthermore, in the material supply system provided in this application, the first feeder can actively feed, temporarily store, and initially adjust the material flow rate, while the second feeder can precisely adjust the material flow rate. It is evident that the combination of these two feeders complements each other, enabling precise on-demand feeding and providing strong support for continuous production within the material supply system. This is beneficial for improving the processing quality and efficiency of the materials in the mixer and baler. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the material supply system provided in the embodiments of this application;

[0024] Figure 2 for Figure 1 Top view;

[0025] Figure 3 This is a schematic diagram of the structure of the first feeder and the flexible sleeve provided in the embodiments of this application;

[0026] Figure 4 This is a schematic diagram of the structure of the second feeder provided in the embodiments of this application;

[0027] Figure 5 for Figure 4 Top view;

[0028] Figure 6 for Figure 4 A magnified view of the weighing gearbox area;

[0029] Figure 7 This is a schematic diagram of the structure of the spiral tipping rod II provided in the embodiments of this application;

[0030] Figure 8 This is a schematic diagram of the structure of the spiral feeder II provided in the embodiments of this application;

[0031] Figure 9 This is a schematic diagram of the structure of the mixer provided in the embodiments of this application;

[0032] Figure 10 for Figure 9 Top view;

[0033] Figure 11 for Figure 9 A partial method diagram at the mixing gearbox;

[0034] Figure 12 This is a schematic diagram of the structure of the spiral tipping rod I provided in the embodiments of this application;

[0035] Figure 13 This is a schematic diagram of the structure of the spiral feeder I provided in the embodiments of this application;

[0036] Figure 14 This is a schematic diagram of the structure of the atomizing humidifier provided in the embodiments of this application;

[0037] Figure 15 for Figure 14 Top view;

[0038] Figure 16 This is a schematic diagram of the structure of the material handling machine provided in the embodiments of this application;

[0039] Figure 17 for Figure 16 Top view.

[0040] Among them, 1-first feeder, 11-feeding hopper, 12-vacuum generator, 13-backflush port, 14-discharge valve, 2-second feeder, 21-screw feeder II, 22-screw tilting rod II, 23-weighing hopper, 24-weighing platform, 25-weighing discharge hopper, 26-quick-connect transparent hose, 27-weighing conveying pipe, 28-weighing gear reducer, 29-weighing gearbox, 210-weighing drive motor, 211-observation window II, 2 12-Weighing drive motor output shaft, 213-Torque limiting coupling II, 214-Weighing drive shaft, 215-Weighing stirring shaft, 216-External spiral curved rod II, 217-First stop rod II, 218-Second stop rod II, 3-Mixer, 31-Spiral feed rod I, 311-Mixing conveyor center shaft, 312-Mixing conveyor section rod, 313-Mixing conveyor docking column, 314-Mixing conveyor horizontal turning rod, 32-Spiral turning rod I, 3 21-External spiral curve rod I, 322-First stop rod I, 323-Second stop rod I, 33-Mixing chamber, 34-Mixing hopper, 35-Mixing conveying pipe, 36-Mixing discharge hopper, 37-Mixing gear reducer, 38-Mixing drive motor, 39-Mixing gearbox, 310-Mixing hopper end cover, 320-Observation window I, 330-Atomizing humidification port, 340-Mixing rotation detection sensor, 350-Mixing drive motor output shaft. 360-Torque Limiting Coupling I, 370-Mixing Drive Shaft, 380-Mixing Agitator Shaft, 4-Particle Setter, 41-Particle Setter Frame, 42-Particle Setter Motor, 43-Particle Setter Screen, 44-Wet Particle Setter Knife, 45-Reverse Mounting Nut, 5-Flexible Sleeve, 6-Atomizing Humidifier, 61-Atomizing Nozzle, 62-Water Storage Tank, 63-Water Level Sensor, 64-Mass Flow Meter, 65-Peristaltic Pump, 66-Y-Type Filter, 7-Discharge Pipe, 8-Electrical Control Cabinet. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] Please refer to Figures 1 to 17 , Figure 1 This is a schematic diagram of the material supply system provided in the embodiments of this application; Figure 2 for Figure 1 Top view; Figure 3 This is a schematic diagram of the structure of the first feeder and the flexible sleeve provided in the embodiments of this application; Figure 4 This is a schematic diagram of the structure of the second feeder provided in the embodiments of this application; Figure 5 for Figure 4 Top view; Figure 6 for Figure 4 A magnified view of the weighing gearbox area; Figure 7 This is a schematic diagram of the structure of the spiral tipping rod II provided in the embodiments of this application; Figure 8 This is a schematic diagram of the structure of the spiral feeder II provided in the embodiments of this application; Figure 9 This is a schematic diagram of the structure of the mixer provided in the embodiments of this application; Figure 10 for Figure 9 Top view; Figure 11 for Figure 9 A partial method diagram at the mixing gearbox; Figure 12 This is a schematic diagram of the structure of the spiral tipping rod I provided in the embodiments of this application; Figure 13 This is a schematic diagram of the structure of the spiral feeder I provided in the embodiments of this application; Figure 14 This is a schematic diagram of the structure of the atomizing humidifier provided in the embodiments of this application; Figure 15 for Figure 14 Top view; Figure 16 This is a schematic diagram of the structure of the material handling machine provided in the embodiments of this application; Figure 17 for Figure 16 A top view. Among them, Figure 1 and Figure 2 The first feeder 1 is not shown in either document. Figure 4 , Figure 5 , Figure 6 , Figure 9 , Figure 10 , Figure 11 All are partial cross-sections; Figure 7 and Figure 12 All are partial images.

[0044] Please refer to Figures 1 to 3This application provides a material supply system, including a first feeder 1, a second feeder 2, a mixer 3, and a baler 4. In this embodiment, the first feeder 1, the second feeder 2, the mixer 3, and the baler 4 are connected in sequence, and the material entering from the first feeder 1 can flow through the first feeder 1, the second feeder 2, the mixer 3, and the baler 4 in sequence. In this embodiment, the first feeder 1 includes an inlet, an outlet, and a feeding bin 11. The inlet and outlet of the first feeder 1 are located at the upper and lower ends of the feeding bin 11, respectively. The inlet is equipped with a vacuum generator 12, and the outlet is equipped with a discharge valve 14. The vacuum generator can not only... It serves to vacuum feed material into the feed hopper 11 and also acts as a valve. That is, when the vacuum generator 12 is closed, it can prevent material from entering the feed hopper 11, and when the vacuum generator 12 is open, the vacuum suction force generated can draw material into the feed hopper 11. In this embodiment, the second feeder 2 includes a feeding mechanism with adjustable feeding flow rate and a weighing device located at the outlet of the feeding mechanism. The aforementioned feeding mechanism and weighing device are coupled to the same controller. As a result, the second feeder 2 can accurately control the feeding amount to the mixer 3. That is, the controller can adjust the feeding flow rate of the feeding mechanism according to the detection data of the weighing device.

[0045] In this material supply system, the mixer 3 mixes the materials, and the shaping machine 4 shapes the materials.

[0046] The use of mixer 3 to mix materials can refer to the uniform mixing of multiple powdery or granular materials, or the uniform mixing of a single powdery or granular material with a liquid. Typically, if mixer 3 is connected to only one first feeder 1 and one second feeder 2, then the first feeder 1 and the second feeder 2 are used to transport a single material; that is, mixer 3 is used to uniformly mix a single material with a liquid such as water. If mixer 3 is connected to multiple first feeders 1 and multiple second feeders 2, then the first feeders 1 and the second feeders 2 can transport different materials separately; that is, mixer 3 is used to uniformly mix multiple materials, and of course, it can also simultaneously uniformly mix the aforementioned multiple materials with a liquid.

[0047] The material forming machine 4 is used to shape materials, including but not limited to shaping powdered materials into granular materials with a specific shape.

[0048] The material supply system connects the first feeder 1, the second feeder 2, the mixer 3, and the baler 4 in sequence to realize the continuous processing of materials in these devices. Among them, the mixer 3 and the baler 4 are important devices for processing materials. In order to flexibly and accurately control the feeding state of materials to the mixer 3 and the baler 4, the material supply system uses the first feeder 1 and the second feeder 2 to control the feeding state of materials in sequence.

[0049] The first feeder 1 and the second feeder 2 can control the material feeding status. For the first feeder 1, the feed hopper 11 can store materials, and the vacuum generator 12 can actively draw materials into the feed hopper 11. Furthermore, the vacuum generator 12 and the discharge valve 14 can adjust the closure status of the upper and lower ends of the feed hopper 11. Clearly, opening the vacuum generator 12 at the inlet can replenish materials into the feed hopper 11, and opening the discharge valve 14 at the outlet can transfer materials to the second feeder 2. Therefore, the first feeder 1 can temporarily store materials to continuously supply materials to the second feeder 2, and can also flexibly adjust the amount of material in the feed hopper 11 and the amount of material transferred to the second feeder 2, ensuring accurate control of the material flow rate by the second feeder 2. For the second feeder 2, the conveying mechanism is used to transport materials and can adjust the conveying flow rate. The weighing device is located at the outlet of the conveying mechanism and can weigh the materials output by the conveying mechanism in real time, providing data support for adjusting the conveying flow rate of the conveying mechanism.

[0050] In summary, the material supply system provided in this application assembles a first feeder 1, a second feeder 2, a mixer 3, and a setter 4 in sequence, allowing materials to be conveyed sequentially among these devices to meet the requirements of continuous production. The material supply system provided in this application has two feeding devices, a first feeder 1 and a second feeder 2, before the mixer 3. The first feeder 1 and the second feeder 2 are connected in series. The first feeder 1 can temporarily store a suitable amount of material for use by the second feeder 2, and it can also initially adjust the conveying flow rate, which is beneficial for the second feeder 2 to accurately adjust the conveying flow rate subsequently. The second feeder 2 uses a conveying mechanism and a weighing device to accurately adjust the conveying flow rate, ensuring the processing quality and efficiency of the material in the mixer 3 and the setter 4. Therefore, in the material supply system, the first feeder 1 and the second feeder 2 are combined and complement each other, providing a strong guarantee for continuous production within the material supply system.

[0051] The material supply system provided in this application will be further described below with reference to the accompanying drawings and embodiments.

[0052] Still worth referencing Figures 1 to 3In some embodiments, the material supply system further includes a flexible sleeve 5; the outlet of the first feeder 1 and the inlet of the second feeder 2 are spaced vertically apart. Since the outlet of the first feeder 1 conveys material towards the inlet of the second feeder 2, the outlet of the first feeder 1 is located higher and the inlet of the second feeder 2 is located lower. That is, the outlet of the first feeder 1 is located above the inlet of the second feeder 2, and the two can usually be aligned with each other; the flexible sleeve 5 is disposed between the first feeder 1 and the second feeder 2 to connect the first feeder 1 and the second feeder 2. For example, the upper end of the flexible sleeve 5 surrounds and connects to the outlet of the first feeder 1, and the lower end of the flexible sleeve 5 surrounds and overlaps the inlet of the second feeder 2.

[0053] The flexible sleeve 5 can generally be a cylindrical cloth bag. Using the flexible sleeve 5 to achieve a suspended connection between the first feeder 1 and the second feeder 2 provides a closed channel for material to flow from the first feeder 1 to the second feeder 2, while also preventing large interaction forces between the two feeders. In particular, it prevents the force from the first feeder 1 from being transmitted to the second feeder 2 and interfering with the second feeder 2's control accuracy of the material flow rate. In other words, the suspended connection between the first feeder 1 and the second feeder 2 ensures that vacuum feeding operations do not affect the weighing operation of the second feeder 2.

[0054] For reference Figure 9 , Figures 11 to 13 In some embodiments, the mixer 3 adopts a double concentric screw structure to mix and transport materials. For example, the mixer 3 is provided with a first double concentric screw mechanism, which may include a screw feeding rod I31, a screw turning rod I32 and a screw drive device I. The screw turning rod I32 is sleeved on the screw feeding rod I31, and both the screw feeding rod I31 and the screw turning rod I32 are connected to the screw drive device I.

[0055] In the above embodiment, the spiral turning rod I32 is sleeved on the spiral feeding rod I31. The spiral feeding rod I31 and the spiral turning rod I32 are distributed in the same direction. The axial direction of either one is the direction in which the mixer 3 transports materials. Moreover, the inner diameter of the spiral turning rod I32 is often larger than the outer diameter of the spiral feeding rod I31.

[0056] Both the screw feeder I31 and the screw tilter I32 are connected to the screw drive device I. When the screw drive device I is started, it drives the screw feeder I31 and the screw tilter I32 to run. Both the screw feeder I31 and the screw tilter I32 can apply force to the material in the mixer 3 to move the material and achieve material transport and mixing.

[0057] In the first double concentric screw mechanism, the screw feed rod I31 and the screw tilting rod I32 can be regarded as non-meshing twin screws. Therefore, the gap is large, which makes it more adaptable to the action of powder. The feeding speed is fast and the feeding is stable, the metering is accurate, and the feeding is uniform, which can ensure the stability of the product and improve the product quality.

[0058] Typically, the screw feeder I31 and the screw tilter I32 can operate at different speeds or in opposite directions, which helps to improve the mixing effect of materials.

[0059] For example, the screw feeder I31 can be configured as a screw rod for feeding material towards the outlet of the mixer 3, and the screw tilter I32 can be configured as a screw rod for turning the material in place. When the screw drive device I is started, the screw feeder I31 transports material towards the outlet of the mixer 3, and the screw tilter I32 can drive the material to turn in place. The material driven by the screw feeder I31 and the material driven by the screw tilter I32 will collide with each other, producing a bidirectional flow effect, which makes a large amount of material reach a consistent state more quickly, assists in completing the stable control of the material, and thus can produce a very effective and efficient mixing effect, which is beneficial to improving the degree of mixing of materials in the mixer 3. In this example, in addition to causing the material to flip in place, the spiral turning rod I32 can also move the material toward the inlet of the mixer 3. In other words, the spiral turning rod I32 can also be set as a spiral rod for feeding material toward the inlet of the mixer 3. Of course, the combined effect of the spiral turning rod I32 and the spiral feeding rod I31 is still to make the material move from the inlet of the mixer 3 toward the outlet of the mixer 3.

[0060] Furthermore, in order to utilize the first double concentric screw mechanism to transport materials from the inlet to the outlet of the mixer 3, the start / stop status of both the screw feeder I31 and the screw tilter I32 can be adjusted, as can their axial speeds. Taking the latter as an example, the axial speed of the screw feeder I31 can be greater than that of the screw tilter I32, which helps ensure that the material moves towards the outlet of the mixer 3 under the combined action of the screw feeder I31 and the screw tilter I32.

[0061] In the above embodiments, the spiral turning rod I32 may include multiple external spiral curved rods I321, multiple first stop rods I322, and multiple second stop rods I323; see reference Figure 9 and Figure 12All the outer spiral curved rods I321 are distributed at intervals along the length of the spiral feeding rod I31. Any one of the outer spiral curved rods I321 is spirally distributed with the spiral feeding rod I31 as the axis. All the first stop rods I322 are distributed among each outer spiral curved rod I321. One end of any one of the first stop rods I322 is connected to the outer spiral curved rod I321, and the other end extends toward the center of the outer spiral curved rod I321. All the second stop rods I323 are respectively arranged between each adjacent outer spiral curved rod I321. Any one of the second stop rods I323 extends along the spiral feeding rod I31.

[0062] The spiral turning rod I32 has an outer spiral curve rod I321, a first stop rod I322, and a second stop rod I323. The outer spiral curve rod I321 is the main component of the spiral turning rod I32, and its shape constitutes the basic shape structure of the spiral turning rod I32. The first stop rod I322 and the second stop rod I323 are located on the outer spiral curve rod I321. The first stop rod I322 extends toward the center of the outer spiral curve rod I321, and the second stop rod I323 extends along the axial direction of the spiral feeding rod I31. The two can apply different stirring effects to the material in the mixer 3, which is conducive to improving the mixing degree of the material in the mixer 3.

[0063] Typically, multiple first stop rods I322 can be arranged in a circular array around the central axis of the outer spiral curve rod I321, which can enhance the conveying capacity of the spiral turning rod I32.

[0064] As described above, the spiral turning rod I32 can be used to turn materials in place. Based on the above embodiments, the multiple outer spiral curve rods I321 of the spiral turning rod I32 can be distributed at a specific angle to achieve in-place material turning. For example, among all the outer spiral curve rods I321 of the spiral turning rod I32, the rotation directions of any adjacent outer spiral curve rods I321 are opposite, resulting in opposite feeding directions for any two adjacent outer spiral curve rods I321. Assuming that among any two adjacent outer spiral curve rods I321, one has a positive rotation direction and is used to transport materials towards the outlet of the mixer 3, and the other has a negative rotation direction and is used to transport materials towards the inlet of the mixer 3, then when the number of outer spiral curve rods I321 with a positive rotation direction in the spiral turning rod I32 is equal to the number of outer spiral curve rods I321 with a negative rotation direction, the effect of the spiral turning rod I32 on the material can be equivalent to turning the material in place.

[0065] For the same spiral turning bar I32, in addition to alternating the positive and negative spiral curve bars I321, the two types of spiral curve bars I321 can also be distributed at intervals according to other rules. Of course, in order to mix the material more effectively, it is preferable to alternate the two types of spiral curve bars I321.

[0066] For reference Figure 9 and Figure 13 The spiral feed rod I31 may include a mixing and conveying central shaft 311, a mixing and conveying section rod 312, a mixing and conveying docking post 313, and a mixing and conveying horizontal turning rod 314. The mixing and conveying section rod 312 extends along a spiral line and is spirally wound around the mixing and conveying central shaft 311. The mixing and conveying docking post 313 extends radially along the mixing and conveying central shaft 311, and its two ends are respectively connected to the mixing and conveying section rod 312 and the mixing and conveying central shaft 311. The mixing and conveying horizontal turning rod 314 extends axially along the mixing and conveying central shaft 311, and at least one end of the mixing and conveying horizontal turning rod 314 is connected to the mixing and conveying section rod 312. The aforementioned shape and structure of the spiral feed rod I31 can improve the conveying capacity, and in conjunction with the spiral turning rod I32, it can better achieve the mixing of materials.

[0067] As described above, the screw feeder I31 and the screw tilter I32 can operate at different speeds. For example, see reference... Figures 9 to 11 The screw feed rod I31 and the screw tilting rod I32 can be connected to the same screw drive device I through a differential transmission assembly. When the screw drive device I is started, the screw feed rod I31 and the screw tilting rod I32 run synchronously and differentially. At the same time, the mixer 3 also includes a torque limiting coupling I316, which is located between the screw drive device I and the first double concentric screw mechanism and can realize overload protection.

[0068] Torque limiting coupling I316 is located between the screw drive device I and the first double concentric screw mechanism, and can transmit torque between them. When the load torque of the mixer 3 exceeds the set value, the torque limiting coupling I316 automatically slips, no longer transmitting torque from the screw drive device I to the first double concentric screw mechanism, causing the first double concentric screw mechanism to stop, allowing the operator to inspect and maintain the mixer 3. When the overload of the mixer 3 disappears, the torque limiting coupling I316 reconnects, linking the screw drive device I and the first double concentric screw mechanism, allowing the screw drive device I to drive the first double concentric screw mechanism.

[0069] Typically, the mixer 3 is also equipped with a sensor for monitoring the load torque of the mixer 3. The torque limiting coupling I316 and the aforementioned sensor are coupled to the same controller, which controls the state of the torque limiting coupling I316 based on the sensor's detection data.

[0070] Still worth referencing Figures 9 to 11In addition to the first double concentric screw mechanism, screw drive device I, torque limiting coupling I316, and sensors, the mixer 3 may also include components such as a mixing hopper 34, a mixing conveying pipe 35, and a mixing discharge hopper 36. The screw drive device I may include a mixing drive motor 38, a mixing gear reducer 37, and a mixing gearbox 39. The aforementioned mixing hopper end cover 310 may be equipped with an observation window I311 to monitor the material conveying status. The lower end of the aforementioned mixing discharge hopper 36 is equipped with a quick-connect transparent flexible hose that can be connected to the inlet of the mixer 3. The aforementioned mixing hopper 34 can be connected to the mixing chamber 33 via a clamping elbow. When disassembling the mixing hopper 34 and the mixing chamber 33, the clamping elbow is opened and the mixing hopper 34 is lifted for easy cleaning. The mixing chamber 33 can be connected to the mixing gearbox 39 via a clamping elbow. The mixing gearbox 39 can be connected to the mixing drive motor 38 and the mixing gear reducer 37 via a connecting flange. The aforementioned mixing drive motor 38 has a mixing drive motor output shaft 315, which can be connected to the second double concentric screw mechanism in sequence via a torque limiting coupling I316, a mixing drive shaft 317, and a mixing shaft 318. Furthermore, the mixing gearbox 39 is equipped with a mixing rotation detection sensor 314 for detecting the rotational state of the mixing shaft 318, so as to determine whether the mixing shaft 318 is blocked by material or whether the mixing drive shaft 317 is jammed, and thus determine whether the mixing drive motor 38 needs to be stopped. (See reference...) Figure 9 and Figure 11 The aforementioned mixing gearbox 39 may include several gears. The mixing drive motor 38 provides the required power to the spiral feeding rod I31 and spiral turning rod I32 of the first double concentric spiral rod mechanism through these gears, so that the spiral feeding rod I31 and spiral turning rod I32 transport materials in a differential speed manner, and achieve transportation effects including but not limited to reverse material transportation.

[0071] For reference Figure 4 , Figure 5 , Figure 7 and Figure 8In some embodiments, the second feeder 2 is provided with a second double concentric screw mechanism. The second feeder 2 uses the second double concentric screw mechanism to transport materials and adjust the material flow rate. The second double concentric screw mechanism and the first double concentric screw mechanism can have the same or similar structure. For example, the second double concentric screw mechanism may include a screw feeding rod II21, a screw turning rod II22, and a screw drive device II. The screw turning rod II22 is sleeved on the screw feeding rod II21, and both the screw feeding rod II21 and the screw turning rod II22 are connected to the screw drive device II. The aforementioned screw turning rod II22 has the same structure as the screw turning rod I32, while the aforementioned screw feeding rod II21 is helical and the trajectory is continuous. That is, the rod body of the screw feeding rod II21 extends along a continuous helical line.

[0072] For reference Figure 7 and Figure 12 The spiral turning rod II22 and the spiral turning rod I32 can have completely identical structures. This means that the spiral turning rod II22 can include several outer spiral curved rods II216, several first stop rods II217, and several second stop rods II218. Furthermore, the structures of the spiral turning rod II22 and the spiral turning rod I32 can also be similar but with subtle differences. For example, in the spiral turning rod I32, one end of any second stop rod I323 is connected to an outer spiral curved rod I321, while the other end is suspended. In the spiral turning rod II22, the two ends of any second stop rod II218 can be connected to two adjacent outer spiral curved rods II216, respectively.

[0073] For reference Figures 4 to 6 The second feeder 2 utilizes a second double concentric screw mechanism to transport materials and regulate the conveying flow rate. This means that when the second double concentric screw mechanism is running, it generates a specific volume of product discharge per revolution, which is simultaneously discharged towards the outlet of the second feeder 2. Furthermore, the second feeder 2 also utilizes the second double concentric screw mechanism to improve the material conveying capacity within the second feeder 2. For example, the second double concentric screw mechanism can break up materials, preventing clumping and blockage of the channels within the second feeder 2, ensuring smooth material movement.

[0074] For reference Figures 4 to 6 , Figures 9 to 11Considering the fundamental differences in function between the second feeder 2 and the mixer 3, the size of the second double concentric screw mechanism of the second feeder 2 is typically smaller than that of the first double concentric screw mechanism of the mixer 3. In other words, the mixer 3 uses a larger first double concentric screw mechanism to stir and mix the materials, improving the mixing effect. The second feeder 2 uses a smaller second double concentric screw mechanism to transport the materials, allowing for preliminary dispersing and crushing during transport, which further enhances the mixing effect of the mixer 3. Furthermore, the smaller size of the second double concentric screw mechanism facilitates precise control of the feed flow rate of the second feeder 2. Moreover, compared to weighing twin-screw mechanisms, mixing twin-screw mechanisms often have a longer pitch and higher rotational speed, resulting in a more pronounced mixing effect.

[0075] For reference Figure 3 and Figure 4 Typically, the second double concentric screw mechanism of the second feeder 2 is laterally distributed. The second feeder 2 also includes a weighing platform 24 for detecting the real-time weight of the material. The weighing platform 24 is located below the front end of the second double concentric screw mechanism and can be used to calibrate the real-time flow rate of material transferred from the first feeder 1 to the second feeder 2. The front end of the second double concentric screw mechanism refers to the end near the inlet of the second feeder 2, which is also the end near the first feeder 1. Conversely, the second double concentric screw mechanism also has a rear end, which refers to the end near the outlet of the second feeder 2, which is also the end near the mixer 3.

[0076] Based on the aforementioned real-time flow rate, the vacuum generator 12 and the discharge valve 14 of the first feeder 1 can be adjusted to dynamically adjust the feeding status of the first feeder 1 to the second feeder 2, including but not limited to changing the continuity of feeding and adjusting the feeding flow rate. Furthermore, based on the aforementioned real-time flow rate, the operating status of the second double concentric screw mechanism can also be adjusted to regulate the conveying flow rate of the second feeder 2. When the material in the hopper is insufficient, the relevant control module of the material supply system locks the feeding flow rate of the first feeder 1 to prevent the replenishment process from affecting the conveying flow rate of the second feeder 2.

[0077] Since the second feeder 2 can weigh materials and precisely adjust the feeding flow rate, it can also be called a weighing feeder. The weighing feeder plays a connecting role between the first feeder 1 and the mixer 3, enabling feedback control of the first feeder 1 and supplying materials to the mixer 3 at a set flow rate.

[0078] For reference Figures 4 to 6Typically, the aforementioned weighing feeder, in addition to the second double concentric screw mechanism and the weighing platform 24, may also include a weighing hopper 23, a weighing mixing chamber, a weighing drive motor 210, a weighing gear reducer 28, a weighing gearbox 29, a torque limiting coupling II 213, a weighing conveying pipe 27, and a weighing discharge hopper 25. In this weighing feeder, part of the second double concentric screw mechanism is located in the weighing mixing chamber, and part of the second double concentric screw mechanism is located in the weighing conveying pipe 27. For example, the first half of the screw feeder II 21 and the screw tilter II 22 is located in the weighing mixing chamber, and the second half of the screw tilter II 22 is located in the weighing conveying pipe 27. In this weighing feeder, the screw drive device II includes the aforementioned weighing drive motor 210, the aforementioned weighing gear reducer 28, the aforementioned weighing gearbox 29, and the aforementioned torque limiting coupling II 213.

[0079] In the above embodiment, the weighing hopper 23 is provided with an observation window 211, which can be used to monitor the material level and material conveying status at any time. The weighing hopper 23 can be connected to the weighing mixing chamber through a clamping elbow. When disassembling the weighing hopper 23 and the weighing mixing chamber, the clamping elbow is opened and the weighing hopper 23 is lifted for easy cleaning. The weighing mixing chamber can be connected to the weighing gearbox 29 through a clamping elbow. The weighing gearbox 29 can be connected to the weighing drive motor 210 and the weighing gear reducer 28 through a connecting flange. The weighing drive motor 210 has a weighing drive motor output shaft 212, which can be connected to the second double concentric screw mechanism in sequence through the torque limiting coupling II 213, the weighing drive shaft 214, and the weighing mixing shaft 215. In addition, the weighing gearbox 29 is equipped with a weighing rotation detection sensor for detecting the rotational state of the weighing stirring shaft 215, so as to determine whether the material is blocking the weighing stirring shaft 215 or whether the weighing drive shaft 214 is jammed, and thus determine whether the weighing drive motor 210 needs to be stopped. (See reference...) Figure 6 The weighing gearbox 29 may include several gears, through which the weighing drive motor 210 can provide the necessary power to the screw feed rod II21 and screw tilting rod II22 of the second double concentric screw mechanism. A detachable glass window II may be provided at the upper end of the weighing discharge hopper 25 to monitor the material conveying status. Meanwhile, a quick-connect transparent hose 26 is provided at the lower end of the weighing discharge hopper 25 for connection to the inlet of the mixer 3.

[0080] For reference Figure 3In the above embodiments, the first feeder 1 feeds material into the feed hopper 11 using a vacuum generator 12. A filter and a backflushing device are provided between the vacuum generator 12 and the feed hopper 11. The filter is located between the air inlet of the vacuum generator 12 and the feed hopper 11 to prevent material from entering the vacuum generator 12 when the vacuum generator 12 is drawing material. The backflushing device is connected to the feed hopper 11 through a backflushing port 13 and is used to backflush the filter in the direction of material filtration when the vacuum generator 12 is stopped, thereby achieving automatic cleaning of the filter and preventing filter blockage.

[0081] The vacuum generator 12 installed in the first feeder 1 can actively draw material into the feed hopper 11, enabling repeated replenishment according to operational needs and maintaining the material quantity in the feed hopper 11 within a suitable range, thus ensuring the continuous operation of the other equipment in the material supply system. Based on the aforementioned operating method of the first feeder 1, the first feeder 1 can also be referred to as a vacuum feeder.

[0082] The aforementioned first feeder 1 typically also includes a feed control module. This module connects to the vacuum generator 12 and the discharge valve 14 of the first feeder 1, and can control the opening and closing states of both the vacuum generator 12 and the discharge valve 14, thereby controlling the amount of material in the feed hopper 11. The feed control module can automatically adjust the opening and closing states of the vacuum generator 12 and the discharge valve 14 based on the set data of the first feeder 1, or it can adjust the opening and closing states of the vacuum generator 12 and the discharge valve 14 according to the operating parameters of the second feeder 2.

[0083] For reference Figures 1 to 3 When the material in the feed hopper 11 is less than the preset value, the feeding control module activates the vacuum generator 12 located at the inlet of the first feeder 1. The vacuum generator 12 generates a vacuum airflow and opens the inlet of the first feeder 1, allowing external material to be drawn into the feed hopper 11 from the inlet of the first feeder 1, thus replenishing the feed hopper 11. During the aforementioned replenishment process, the filter completely separates the material from the air, preventing material from entering the vacuum generator 12. After replenishment is completed, the vacuum generator 12 stops operating, and the backflushing device is activated. The compressed air provided by the backflushing device backflushes the filter, removing any material adhering to the filter to prevent affecting the next filtration effect. After backflushing is completed, the feeding control module opens the discharge valve 14 located at the first feeder 1, and the material in the feed hopper 11 falls into the second feeder 2 under its own gravity. During this process, the feeding control module can adjust the opening and closing state of the discharge valve 14 according to the operating parameters of the second feeder 2 to achieve continuous or intermittent feeding to the second feeder 2. The feeding control module can adjust the opening and closing state of the feeding valve 14 based on the detection data feedback from the weighing device of the second feeder 2, so as to realize fully automatic feeding to the second feeder 2.

[0084] Please refer to Figure 1 , Figure 2 and Figure 16 and Figure 17 In the above embodiments, the material sizing machine 4 can specifically be a granulator, used to granulate the material processed by the mixing machine 3. For example, after the material is evenly mixed with water and other substances in the mixing machine 3, it enters the granulator. The granulator uses its granulating motor 42, wet granulating blade 44 and granulating screen 43 to achieve granulation and control the particle size and state of the material.

[0085] For the aforementioned granulator, the granulator motor 42 is generally a variable frequency speed control motor. The granulator screen 43 is a plate with holes and is detachably embedded in the granulator frame 41. During use, the granulator screen 43 can be replaced according to parameters such as material properties and target particle size. The wet granulator blade 44 can be a three-blade wet granulator blade 44. The three-blade wet granulator blade 44 is located at the upper end of the granulator screen 43 and is connected to the variable frequency speed control motor through a reverse mounting nut 45.

[0086] Please refer to Figure 1 , Figure 2 , Figure 9 , Figure 14 and Figure 15 In some embodiments, the material supply system further includes an atomizing humidifier 6; the atomizing humidifier 6 is connected to the mixer 3 and is used to provide atomized liquid to the mixer 3; the atomizing humidifier 6 is provided with an atomizing nozzle 61, and the mixer 3 is provided with a mixing chamber 33, wherein the aforementioned atomizing nozzle 61 is located in the mixing chamber 33 and can spray atomized liquid, such as atomized water, into the mixing chamber 33.

[0087] The atomizing nozzle 61 can be specifically configured as an atomizing spray gun. The atomizing spray gun can be installed inside the mixer 3 from the atomizing humidification port 312 of the mixing hopper end cover 310.

[0088] The liquid in the atomizing humidifier 6 is sprayed into the mixing chamber 33 through the atomizing spray gun, which is beneficial to fully and evenly mixing with the materials in the mixing chamber 33.

[0089] In addition to the atomizing nozzle 61, the aforementioned atomizing humidifier 6 may also include components such as a water storage tank 62, a mass flow meter 64, and a peristaltic pump 65. When the peristaltic pump 65 is started, the atomizing humidifier 6 supplies atomized liquid, such as atomized purified water, to the mixer 3 through the atomizing nozzle 61 to change the moisture content of the materials in the mixer 3. The water storage tank 62 is used to store the liquid to be atomized; the water storage tank 62 may be equipped with a water level sensor 63 so that liquid can be replenished to the water storage tank 62 in a timely manner based on the detection data of the water level sensor 63. A filter device, such as a Y-type filter 66, may be installed between the water storage tank 62 and the atomizing nozzle 61 to prevent foreign objects from entering the atomizing nozzle 61.

[0090] A mass flow meter 64 is located between the water storage tank 62 and the atomizing nozzle 61 to detect the liquid flow rate in real time and feed it back to the control system so that the control system can adjust the operating status of the atomizing humidifier 6 accordingly, such as adjusting the speed of the peristaltic pump 65.

[0091] In addition, in some embodiments, reference may be made to Figure 1 and Figure 2 The outlet of the material handling machine 4 is equipped with a discharge pipe 7 and a material detector located inside the discharge pipe 7. The discharge pipe 7 is a double-bend pipe with two bends. These two bends are distributed at intervals along the extension direction of the pipe and are distributed in opposite directions. The bend angle of any bend is less than 90°. The material detector is located inside the double-bend pipe and at the bend of the double-bend pipe. It is used to detect the properties of the material. For example, the material detector can be a near-infrared spectroscopy analyzer to detect the particle size, mixing uniformity, moisture content and other properties of the material.

[0092] Typically, the two bends in a double-bend pipe are adjacent in the pipe's extension direction, and the material detector can be positioned at the tangent point between the two bends. When material flows through the double-bend pipe, the flow rate at the tangent point is relatively large, allowing the material detector to make full contact with more material. In other words, more material can effectively contact the detector's probe, improving detection efficiency. The aforementioned double-bend pipe can extend downwards, allowing material to move along it under its own weight. The bends effectively limit the material's movement speed within the double-bend pipe, ensuring the material detector contacts and detects the material.

[0093] In addition, such as Figure 1 and Figure 2 As shown, the material supply system may also include an integrated control module for data monitoring, calculation, and integrated control of the entire material supply system. In other words, the controller, related control modules, and feeding control module mentioned above can all be considered as the aforementioned integrated control module. The integrated control module may include an electrical control cabinet 8 and a human-machine interface (HMI). PLCs and other control devices are installed inside the electrical control cabinet 8, responsible for the logic control of the entire system. A power switch is installed on the door of the electrical control cabinet 8 to control the power-on of the entire system. The HMI is used to view, process, and store data from each unit and to centrally control the entire system. The electrical units of the first feeder 1, the second feeder 2, the mixer 3, the baler 4, and the atomizing humidifier 6 can be connected to the electrical control cabinet 8 via quick-connect fittings, facilitating the movement and docking of each electrical unit. Therefore, this material supply system can achieve a stable supply of materials over a long period, avoiding blockages caused by material compatibility issues between different devices.

[0094] The aforementioned human-machine interface has a data recording function, capable of collecting formula data, process data during production, and trend chart data during production, effectively ensuring the integrity of production data. Operators can choose whether to activate the data recording function of the human-machine interface as needed while the material supply system is running.

[0095] Typically, a buffer pipe is installed at the outlet of the material supply system, which is also the outlet of the material feeder 4. A material level detection sensor is installed at the bottom of the buffer pipe. When the material level detection sensor detects that too much material has accumulated in the buffer pipe, the relevant alarm will sound to prompt the operator to adjust the speed of the downstream equipment or adjust the material supply flow of the material supply system according to the actual situation.

[0096] When using the above material supply system, the following steps can be followed:

[0097] (1) Connect the external feeding equipment to the first feeder 1 and turn on the vacuum generator 12 of the first feeder 1 to compress air.

[0098] (2) Input relevant material information into the integrated control module.

[0099] (3) For material supply systems without material detectors, a portion of the material needs to be taken as a sample, and the material parameters of the sample need to be measured. The measured data is then input into the integrated control module of the material supply system. After this, the integrated control module can operate the material supply system based on the measured data and the target material parameters. Furthermore, it should be noted that for material supply systems equipped with material detectors, the material supply system automatically adjusts and operates based on the detector data and the target material parameters, therefore, sampling and measurement of sample parameters are unnecessary.

[0100] (4) Before starting any other equipment except the first feeder 1, the first feeder 1 is fed to full capacity, and then the automatic feeding function of the first feeder 1 is turned on.

[0101] (5) Remove the atomizing spray gun from the mixer 3, turn on the filling pipeline function of the atomizing humidifier 6 to supply liquid into the atomizing spray gun, and cancel the filling pipeline function after the liquid fills the atomizing spray gun. The atomizing pressure of the atomizing humidifier 6 can be set to 1 to 3 bar, and the speed of the peristaltic pump 65 of the atomizing humidifier 6 can be set to 100 to 200 rpm.

[0102] (6) In the integrated control module, the operating parameters of each device in the material supply system are set sequentially, and the second feeder 2, mixer 3, and granulator 4 are activated sequentially. After the material supply system is started, the integrated control module drives the entire material supply system to run according to the set operating parameters. In this material supply system, the material flow rate is generally 40-200 kg / h, the material moisture content is 0.8-1.6% (mass ratio) of the total material, the granulation speed is generally 400-800 rpm, and the mixing speed is generally 60-95 rpm.

[0103] (7) Observe the material spreading status in the mixer 3 through the detachable glass window 313. When the material is evenly spread in the mixer 3, install the atomizing spray gun in the mixer 3 and turn on the spraying function of the atomizing spray gun. When installing the atomizing spray gun, the liquid sprayed by the atomizing spray gun should form a fan-shaped atomization state, and the direction of the fan should be consistent with the conveying direction of the material in the mixer 3. When the atomizing spray gun sprays water mist into the mixer 3, the atomizing humidification component automatically adjusts the speed of the peristaltic pump 65 according to the real-time flow rate of the material and the target moisture content of the material to stabilize the output moisture of the material.

[0104] (8) When all the equipment in the entire material supply system is running normally, the integrated control module manipulates the operation of relevant components to realize the detection of material parameters after material preparation and transmits them to the human-machine interface for display, detects the discharge status of the buffer pipe and provides feedback and alarms, automatically replenishes materials, automatically locks the feeding speed of the second feeder 2 when replenishing materials, etc.

[0105] (9) When production ends, stop the first feeder 1, the second feeder 2, the atomizing humidifier 6, the mixer 3 and the assembling machine 4 in sequence.

[0106] In summary, the material supply system provided in this application can provide materials for continuous direct pressure processes. In this system, each piece of equipment can automatically supply materials to the next piece of equipment according to the process flow. All equipment can achieve steady-state operation, completing processes such as feeding, weighing, mixing, humidifying, granulation, and discharging. This helps to maintain consistent key process parameters throughout the entire process, reduces manual operation and intermediate storage / inspection steps, shortens cycle time, lowers production costs, and improves production efficiency.

[0107] The material supply system provided in this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A material supply system, characterized in that, The system includes a first feeder (1), a second feeder (2), a mixer (3), and a setter (4) connected in sequence. The first feeder (1) includes an inlet, an outlet, and a feed hopper (11). The inlet and outlet of the first feeder (1) are located at the upper and lower ends of the feed hopper (11), respectively. The inlet of the first feeder (1) is provided with a vacuum generator (12) for feeding material into the feed hopper (11), and the outlet is provided with a discharge valve (14). The second feeder (2) includes a conveying mechanism with adjustable conveying flow rate and a weighing device located at the outlet of the conveying mechanism. The conveying mechanism and the weighing device are coupled to the same controller. The mixer (3) includes a first double concentric screw mechanism; the first double concentric screw mechanism includes a screw feeding rod I (31) and a screw turning rod I (32); the screw turning rod I (32) is sleeved on the screw feeding rod I (31); both the screw feeding rod I (31) and the screw turning rod I (32) are connected to a screw drive device I; The spiral feed rod I (31) is a spiral rod used to feed material to the outlet of the mixer (3), and the spiral turning rod I (32) is a spiral rod used to turn the material in place; The spiral turning bar I (32) includes: Multiple external spiral curve rods I (321); any one of the external spiral curve rods I (321) is spirally distributed around the spiral feeding rod I (31) as the axis, all the external spiral curve rods I (321) are distributed at intervals along the spiral feeding rod I (31), and the spiral directions of any adjacent external spiral curve rods I (321) are opposite to achieve reverse feeding; Multiple first stop levers I (322); one end of any first stop lever I (322) is located at the outer spiral curve lever I (321), and the other end extends toward the center of the outer spiral curve lever I (321); Multiple second stop rods I (323); any second stop rod I (323) is disposed between two adjacent outer spiral curve rods I (321), and any second stop rod I (323) extends along the spiral feed rod I (31); The spiral feeding rod I (31) and the spiral turning rod I (32) are connected to the same spiral drive device I through a differential transmission assembly; the mixer (3) also includes a torque limiting coupling I (360), which is located between the spiral drive device I and the first double concentric spiral rod mechanism. The spiral feed rod I (31) includes a mixing conveying central shaft (311), a mixing conveying section rod (312), a mixing conveying docking post (313), and a mixing conveying horizontal tumbling rod (314); the mixing conveying section rod (312) is spirally wound around the mixing conveying central shaft (311); the mixing conveying docking post (313) extends radially along the mixing conveying central shaft (311), and its two ends are respectively connected to the mixing conveying section rod (312) and the mixing conveying central shaft (311); the mixing conveying horizontal tumbling rod (314) extends axially along the mixing conveying central shaft (311), and at least one end is connected to the mixing conveying section rod (312).

2. The material supply system according to claim 1, characterized in that, The outlet of the first feeder (1) and the inlet of the second feeder (2) are spaced apart vertically and connected by a flexible sleeve (5); the lower end of the flexible sleeve (5) surrounds and overlaps the inlet of the second feeder (2).

3. The material supply system according to claim 1, characterized in that, The material conveying mechanism includes a second double concentric screw mechanism; the second double concentric screw mechanism includes a screw feeding rod II (21) and a screw turning rod II (22); the screw turning rod II (22) is sleeved on the screw feeding rod II (21); both the screw feeding rod II (21) and the screw turning rod II (22) are connected to a screw drive device II; the screw turning rod II (22) has the same structure as the screw turning rod I (32); the screw feeding rod II (21) is in the shape of a spiral and the trajectory is continuous; The second double concentric screw mechanism is laterally distributed; the weighing device includes a weighing platform for detecting the real-time weight of the material to calibrate the real-time flow rate; the weighing platform is located below the front end of the second double concentric screw mechanism.

4. The material supply system according to any one of claims 1 to 3, characterized in that, A filter and a backflushing device for backflushing the filter in the opposite direction of material filtration are provided between the vacuum generator (12) and the feed hopper (11); the filter is located between the air inlet of the vacuum generator (12) and the feed hopper (11) to prevent material from entering the vacuum generator (12).

5. The material supply system according to any one of claims 1 to 3, characterized in that, It also includes an atomizing humidifier (6) connected to the mixer (3); the atomizing humidifier (6) is provided with an atomizing nozzle (61), the mixer (3) is provided with a mixing chamber (33), and the atomizing nozzle (61) is located in the mixing chamber (33).

6. The material supply system according to any one of claims 1 to 3, characterized in that, The outlet of the material handling machine (4) is provided with a discharge pipe (7) and a material detector; the discharge pipe (7) is a double-bend pipe, and the bending angle of any bend of the double-bend pipe is less than 90°; the material detector is located inside the double-bend pipe and at the bend of the double-bend pipe.

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