A process and apparatus for extruding and mixing biodegradable material offcuts

Abstract

The application relates to the field of biodegradation processing technology, in particular to a biodegradable material leftover material extrusion mixing process and device.The upper end of a stirring hopper is provided with two feeding ports for respectively adding leftover material and auxiliary material;in the biodegradable material leftover material extrusion mixing process and device, a quantitative feeding mechanism and a plugging mechanism interact to realize the functions of quantitative feeding and dynamic plugging of a discharging port;when the quantitative bin moves, the power rod connected with the quantitative bin drives the auxiliary rod and the shielding piece to move; the linkage eliminates the time difference between valve opening and closing and feeding operation in traditional feeding, can timely and accurately feed the uniformly stirred material, thereby accurately controlling the time and quantity of material flowing out of the stirring hopper, improving the production efficiency and reducing the demand for manual intervention; meanwhile, the quantitative feeding mechanism and the stirring mechanism work cooperatively, and a bidirectional stirring mechanism composed of an inner stirring rod and an outer stirring rod.

Description

Technical Field

[0001] This invention relates to the field of biodegradable processing technology, and more specifically, to a process and apparatus for extruding and mixing biodegradable material scraps. Background Technology

[0002] With increasing environmental awareness, biodegradable materials are being widely used in many fields. The production process of biodegradable materials generates a large amount of scrap material. If this scrap material is discarded directly, it not only wastes resources but also puts pressure on the environment.

[0003] However, when recycling plastic scraps from biodegradable materials, the scraps are usually processed using traditional mixing and extrusion processes. However, the conventional method for mixing the materials is to use a unidirectional stirring rod. This method only stirs the materials in one direction, making it difficult to mix the scraps and materials evenly. As a result, the quality of the recycled biodegradable materials is unstable.

[0004] In the conventional material feeding process, the valve of the material feeding port is usually opened first by a power source, and then another power source is started to perform the quantitative feeding operation. This method of driving different power sources in sequence is not easy to avoid the time delay between the feeding operation and the opening and closing of the valve. As a result, it is difficult for the fully mixed and homogeneous material to be quantitatively fed in a timely and accurate manner at the optimal time, which affects production efficiency and product quality. In view of this, we propose an extrusion mixing process and device for biodegradable material scraps. Summary of the Invention

[0005] The purpose of this invention is to provide a process and apparatus for extruding and mixing biodegradable material scraps to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides a biodegradable material scrap extrusion mixing device, including a mixing hopper. The upper end of the mixing hopper has two feed ports for adding scrap and auxiliary materials, respectively. A support frame is fixedly connected to the bottom of one end of the mixing hopper, and the mixing hopper is equipped with a mixing mechanism for omnidirectional mixing of materials.

[0007] A quantitative feeding mechanism is installed below the mixing hopper. After the material is bidirectionally mixed by the mixing mechanism, it is conveyed to the quantitative feeding mechanism. A sealing mechanism is provided on one side of the quantitative feeding mechanism to close the outlet of the mixing hopper. When the quantitative feeding mechanism moves, the generated moving force pushes the sealing mechanism to open and close to control the outflow of material.

[0008] As a further improvement to this technical solution, a fixed cover is fixedly installed at one end of the mixing hopper, and a servo motor is fixedly installed on the top of the fixed cover. The output end of the servo motor is splinedly connected to a bevel gear A, and bevel gear B and bevel gear C are meshed at the outer edge of bevel gear A.

[0009] The other end of the mixing hopper is provided with a feeding mechanism, which includes a feeding pipe that is connected to the mixing hopper. The input end of the feeding pipe is connected to a pump, and the input end of the pump is connected to a storage tank. The top of the storage tank is provided with a feed inlet.

[0010] The support frame has a groove on the side opposite to the quantitative feeding mechanism to provide space for the movement of the quantitative feeding mechanism. An extruder is fixedly installed on the bottom surface of the quantitative feeding mechanism, and the extruder is connected to the support frame through it.

[0011] The stirring mechanism includes an inner rod fixedly connected to a bevel gear B, and an inner ring stirring rod for stirring materials is fixedly connected to the surface of the inner rod.

[0012] An outer rod is rotatably connected to the outer wall of the top of the inner rod. One end of the outer rod is fixedly connected to the bevel gear C, and the end of the outer rod near the fixed cover is rotatably connected to the fixed cover. A rotating plate is fixedly connected to the end of the outer rod near the inner ring stirring rod, and an outer ring stirring rod is fixedly connected to the bottom surface of the rotating plate. The inner ring stirring rod and the outer ring stirring rod cooperate to form bidirectional stirring.

[0013] The quantitative feeding mechanism includes a flow pipe located below the discharge port of the mixing hopper. An electric slide rail is fixedly installed on the bottom surface of the flow pipe, and a stabilizing frame is fixedly connected to the top surface of one end of the electric slide rail. The top surface of the stabilizing frame is connected to the mixing hopper.

[0014] An electric slider is slidably connected inside the electric slide rail, and a metering chamber is fixedly connected to the surface of the electric slider. The left side of the metering chamber is a cavity for metering materials, and the right side of the metering chamber is a fixed plate for blocking the outlet of the flow pipe when the metering chamber is discharging materials. A movable plate is hinged to the bottom surface of one side of the metering chamber cavity for opening and closing the cavity of the metering chamber, and a straight plate is slidably connected to the bottom surface of the movable plate for supporting the electric slide rail.

[0015] The sealing mechanism includes a power rod fixedly connected to a fixed plate on the right side of the metering bin. An auxiliary rod is fixedly installed on the top of the power rod, and a baffle plate is fixedly connected to one end of the auxiliary rod for sealing the discharge port of the mixing hopper. The surface of the fixed cover has a movable opening adapted to the auxiliary rod for moving the auxiliary rod.

[0016] The second objective of this invention is to provide an extrusion mixing process for biodegradable material scraps, comprising the following steps:

[0017] The first step involves feeding the recycled biodegradable material scraps into the feeding mechanism, which then transfers the biodegradable scraps into the mixing hopper.

[0018] The second step is to turn on the stirring switch on the mixing hopper, adjust the speed to 100 rpm, and stir for 2 minutes. Use the stirring mechanism in the mixing hopper to stir the material in both directions, so that the material is fully mixed.

[0019] Third step: reduce the stirring speed to 50 rpm, add the auxiliary materials through another feeding port, then adjust the speed to 100 rpm and stir for 5 minutes. Use the stirring mechanism again to stir the materials, adjust the speed to 100 rpm and stir for 5 minutes.

[0020] The fourth step is to start the quantitative feeding mechanism. The movement of the quantitative feeding mechanism drives the movement of the sealing mechanism, thereby dynamically sealing the discharge port of the mixing hopper and achieving quantitative feeding. The material is then fed into the extruder, and finally, the extrusion work is completed through the extruder.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] In this biodegradable material scrap extrusion mixing process and device, the quantitative feeding mechanism and the sealing mechanism interact to achieve quantitative feeding and dynamic sealing of the discharge port. When the quantitative bin moves, the power rod connected to it drives the auxiliary rod and the baffle to move. This linkage method eliminates the time difference between valve opening and closing and feeding operation in traditional feeding, and can timely and accurately feed the uniformly mixed material quantitatively, thereby accurately controlling the time and amount of material flowing out of the mixing hopper, improving production efficiency and reducing the need for manual intervention.

[0023] At the same time, the quantitative feeding mechanism and the mixing mechanism work together. On the one hand, through the bidirectional mixing mechanism composed of the inner ring mixing rod and the outer ring mixing rod, the material is mixed in all directions and uniformly. This not only improves the mixing efficiency, but also ensures the quality of material mixing and solves the problem of uneven material mixing that may be caused by traditional unidirectional mixing.

[0024] On the other hand, the mixing mechanism efficiently mixes the materials, ensuring that they are fully and evenly mixed before entering the quantitative feeding mechanism for precise quantitative feeding. The efficient mixing ensures the quality of the material mixture, making the component ratio of each quantitatively fed material stable. The combination of these two factors not only improves production efficiency but also ensures the stability of the final product quality, avoiding product quality fluctuations caused by uneven material mixing or inaccurate feeding. This is conducive to the continuous and stable extrusion mixing process of biodegradable material scraps, and improves the high-quality production of reuse.

[0025] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure assembly of the present invention;

[0027] Figure 2 For the present invention Figure 1 Schematic diagram at point A in the middle;

[0028] Figure 3 This is a schematic diagram showing the overall structure of the present invention cut apart;

[0029] Figure 4 This is a cross-sectional view of the overall structure of the present invention;

[0030] Figure 5 This is a schematic diagram of the stirring mechanism of the present invention;

[0031] Figure 6 This is a schematic diagram of the sealing mechanism and the quantitative feeding mechanism of the present invention;

[0032] Figure 7 This is a demonstration diagram of the feeding mechanism of the present invention.

[0033] Figure 8 This is a schematic diagram showing the cooperation relationship between the quantitative feeding mechanism and the sealing mechanism of the present invention.

[0034] The meanings of the labels in the diagram are as follows:

[0035] 100. Mixing hopper; 101. Feed inlet; 102. Servo motor; 103. Bevel gear B; 104. Bevel gear C;

[0036] 200. Support frame;

[0037] 300. Stirring mechanism; 301. Inner rod; 302. Inner ring stirring rod; 303. Outer rod; 304. Rotating plate; 305. Outer ring stirring rod;

[0038] 400. Quantitative feeding mechanism; 401. Flow tube; 402. Electric slide rail; 403. Quantitative bin; 404. Movable plate;

[0039] 500. Blocking mechanism; 501. Power rod; 502. Auxiliary rod; 503. Shielding plate;

[0040] 600. Feeding mechanism; 601. Storage tank;

[0041] 700. Extruder. Detailed Implementation

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0043] Please see Figure 1 - Figure 8 As shown, this embodiment provides a process and apparatus for extruding and mixing biodegradable material scraps, including a mixing hopper 100. The upper end of the mixing hopper 100 has two feed inlets 101, which are used for adding scraps and auxiliary materials respectively. A support frame 200 is fixedly connected to the bottom of one end of the mixing hopper 100, and a mixing mechanism 300 for mixing materials in all directions is provided inside the mixing hopper 100.

[0044] A quantitative feeding mechanism 400 is installed below the mixing hopper 100. After the material is mixed in both directions by the mixing mechanism 300, it is conveyed to the quantitative feeding mechanism 400. A sealing mechanism 500 is provided on one side of the quantitative feeding mechanism 400 to close the outlet of the mixing hopper 100. When the quantitative feeding mechanism 400 moves, the moving force generated pushes the sealing mechanism 500 to open and close to control the outflow of material.

[0045] In the extrusion and mixing of biodegradable material scraps, the conventional method of stirring the materials is to use a unidirectional stirring rod. However, this method only stirs the materials in one direction, making it difficult to fully and evenly mix the scraps with the main material, resulting in unstable quality of the recycled biodegradable materials. Therefore, this invention firstly uses a bidirectional stirring mechanism composed of an inner ring stirring rod 302 and an outer ring stirring rod 305 to achieve all-round and uniform stirring of the materials. This not only improves the stirring efficiency but also ensures the quality of the material mixture, solving the problem of uneven material mixing that may be caused by traditional unidirectional stirring.

[0046] Secondly, the mixing mechanism 300 efficiently mixes the materials, ensuring they are fully and evenly mixed before entering the quantitative feeding mechanism 400 for precise quantitative feeding. The efficient mixing ensures the quality of the material mixture, making the proportion of each portion of material stable. The combination of these two aspects improves production efficiency and ensures the stability of the final product quality, avoiding fluctuations in product quality due to uneven mixing or inaccurate feeding. This is beneficial for the continuous, stable, and high-quality recycling production of biodegradable material scraps through extrusion mixing.

[0047] On the other hand, in terms of quantitative feeding, traditional equipment lacks a precise quantitative control mechanism. The amount of material fed is either too much, resulting in waste of raw materials and increased production costs, or too little, causing production process interruption and reducing production efficiency. Therefore, by setting up a quantitative feeding structure, the quantitative feeding structure quantifies the material during the movement process, realizing precise quantitative feeding, avoiding material waste, and improving production efficiency.

[0048] Moreover, in the conventional material feeding process, the valve of the material feeding port is usually opened first by a power source, and then another power source is started to perform the quantitative feeding operation. This method of driving different power sources in sequence is not easy to avoid the time delay between the feeding operation and the opening and closing of the valve. Ultimately, it is difficult for the fully mixed and uniform material to be quantitatively fed in a timely and accurate manner at the optimal time, which affects production efficiency and product quality. Therefore, the quantitative feeding mechanism 400 and the sealing mechanism 500 interact to achieve the functions of quantitative feeding and dynamic sealing of the discharge port. When the quantitative bin 403 moves, the power rod 501 connected to it drives the auxiliary rod 502 and the baffle plate 503 to move. This linkage method eliminates the time difference between valve opening and closing and feeding operation in traditional feeding, and can quantitatively feed the uniformly mixed material in a timely and accurate manner, thereby accurately controlling the time and amount of material flowing out of the mixing hopper 100, improving production efficiency and reducing the need for manual intervention.

[0049] Based on the above, the specific structure will be disclosed in detail:

[0050] To achieve stable rotation of the stirring mechanism 300, such as Figure 2 - Figure 5 As shown, a fixed cover is fixedly installed at one end of the mixing hopper 100, and a servo motor 102 is fixedly installed on the top of the fixed cover. The output end of the servo motor 102 is splinedly connected to a bevel gear A, and bevel gears B103 and C104 are meshed at the outer edge of bevel gear A. (The end of bevel gear B103 away from bevel gear C104 is rotatably connected to a bevel gear bracket to ensure the stability of the bevel gear during rotation.) Therefore, power is output through the servo motor 102 and splinedly connected to bevel gear A. The splined connection ensures stable and efficient power transmission and reduces energy loss. Bevel gear A synchronously distributes power to the meshing bevel gears B103 and C104, realizing the operation of multiple components driven by one power source. This simplifies the power structure of the device, improves energy utilization, and reduces equipment cost and maintenance difficulty compared to multiple independent power sources.

[0051] To achieve material loading, such as Figure 1 - Figure 4As shown, a feeding mechanism 600 is provided at the other end of the mixing hopper 100. The feeding mechanism 600 includes a feeding pipe that is connected to the mixing hopper 100. The input end of the feeding pipe is connected to a pump, and the input end of the pump is connected to a storage tank 601. A feed inlet is provided at the top of the storage tank 601. A groove is provided on the side of the support frame 200 opposite to the quantitative feeding mechanism 400 to provide space for the movement of the quantitative feeding mechanism 400. An extruder 700 is fixedly installed on the bottom surface of the quantitative feeding mechanism 400, and the extruder 700 is connected to the support frame 200. Therefore, the material in the storage tank 601 is transported to the mixing hopper 100 through the feeding pipe by the pump. This is more stable and efficient than manual feeding, and can continuously provide material for the mixing process, ensuring the continuity of the mixing operation. The feed inlet is provided at the top of the storage tank 601 to facilitate the replenishment and storage of materials.

[0052] To achieve bidirectional mixing of materials, such as Figure 3 - Figure 5 As shown, the stirring mechanism 300 includes an inner rod 301 fixedly connected to a bevel gear B103. An inner ring stirring rod 302 for stirring materials is fixedly connected to the surface of the inner rod 301. An outer rod 303 is rotatably connected to the outer wall of the top end of the inner rod 301. One end of the outer rod 303 is fixedly connected to the bevel gear C104, and the end of the outer rod 303 near the fixed cover is rotatably connected to the fixed cover. A rotating plate 304 is fixedly connected to the end of the outer rod 303 near the inner ring stirring rod 302, and an outer ring stirring rod 305 is fixedly connected to the bottom surface of the rotating plate 304. The inner ring stirring rod 302 and the outer ring stirring rod 305 cooperate to form bidirectional stirring. Therefore, through the bidirectional stirring formed by the inner ring stirring rod 302 and the outer ring stirring rod 305, the biodegradable material scraps and auxiliary materials in the stirring hopper 100 are fully agitated under the action of forces in different directions. The inner rod 301 and the outer rod 303 rotate in opposite directions, driving the inner ring stirring rod 302 and the outer ring stirring rod 305. The material is stirred from different radii to avoid dead zones in the stirring process.

[0053] To achieve quantitative measurement of materials, such as Figure 6 - Figure 8As shown, the quantitative feeding mechanism 400 includes a flow pipe 401 located below the discharge port of the mixing hopper 100. An electric slide rail 402 is fixedly mounted on the bottom surface of the flow pipe 401, and a stabilizing frame is fixedly connected to the top surface of one end of the electric slide rail 402. The top surface of the stabilizing frame is connected to the mixing hopper 100. An electric slider is slidably connected inside the electric slide rail 402, and a quantitative bin 403 is fixedly connected to the surface of the electric slider. The left side of the quantitative bin 403 is a cavity for quantitatively dispensing materials, and the right side of the quantitative bin 403 is a fixed plate used to block the outlet of the flow pipe 401 when dispensing materials. A movable plate 404 is hinged to the bottom surface of one side of the cavity of the quantitative bin 403 for opening and closing the cavity of the quantitative bin 403. A straight plate is slidably connected to the bottom surface of the movable plate 404 to support the electric slide rail 402. Therefore, by moving the electric slider on the electric slide rail 402, the quantitative bin 403 can be accurately adjusted according to production needs. This precise quantitative method of receiving materials avoids the problems of too much or too little material in traditional feeding methods, effectively reducing raw material waste and lowering production costs.

[0054] To achieve the opening and closing of the discharge port of the mixing hopper 100, such as Figure 4 As shown, the sealing mechanism 500 includes a power rod 501 fixedly connected to the fixed plate on the right side of the metering bin 403. An auxiliary rod 502 is fixedly installed on the top of the power rod 501. A baffle plate 503 is fixedly connected to one end of the auxiliary rod 502 for sealing the outlet of the mixing hopper 100. The surface of the fixed cover has a movable opening adapted to the auxiliary rod 502 for moving the auxiliary rod 502. There are two baffle plates 503. When the metering feeding mechanism 400 moves, the baffle plates 503 can open and close the outlet of the mixing hopper 100. When the flow pipe 401 and the metering bin 403 move, the flow pipe 401 and the metering bin 403 move together. When the discharge port of the mixing hopper 100 is not in a straight line, the baffle plate 503 will block the discharge port of the mixing hopper 100. When the flow pipe 401, the metering bin 403 and the discharge port of the mixing hopper 100 are in a straight line, the discharge port of the mixing hopper 100 will open and metered feeding can be carried out. (When the metering bin 403 is located on the right side of the flow pipe 401, the baffle plate 503 located on the left side of the flow pipe 401 will block the discharge port of the mixing hopper 100. When the metering bin 403 is located on the left side of the flow pipe 401, the baffle plate 503 located on the right side of the flow pipe 401 will block the discharge port of the mixing hopper 100.)

[0055] The auxiliary materials include 1-3% antioxidant, 2-5% dispersant, and 1-3% titanium dioxide.

[0056] Preferably, the dispersant is one or more of epoxidized soybean oil, stearic acid, and PE wax.

[0057] The antioxidant is one or a combination of two of the following: aromatic amine antioxidants and hindered phenolic antioxidants.

[0058] Sample 1: Antioxidant 1%, Dispersant 2%, Titanium Dioxide 3%

[0059] Sample 2: Antioxidant 3%, Dispersant 5%, Titanium Dioxide 1%

[0060] Sample 3: Antioxidant 2%, Dispersant 3%, Titanium Dioxide 2%

[0061] The inspection data of the manufactured products were tested according to the national standard QB / T4012-2010, and the test results are as follows:

[0062]

[0063] The second objective of this invention is to provide an extrusion mixing process for biodegradable material scraps, comprising the following steps:

[0064] The first step is to put the recycled biodegradable material scraps into the feeding mechanism 600, and then feed the biodegradable scraps into the mixing hopper 100 through the feeding mechanism 600.

[0065] Step 2: Turn on the stirring switch on the mixing hopper 100, adjust the speed to 100 rpm, and stir for 2 minutes. Use the stirring mechanism 300 in the mixing hopper 100 to stir the material in both directions, so that the material is fully mixed.

[0066] Third step: reduce the stirring speed to 50 rpm, add the auxiliary materials through another feeding port, then adjust the speed to 100 rpm and stir for 5 minutes. Use the stirring mechanism 300 to stir the materials again, adjust the speed to 100 rpm and stir for 5 minutes.

[0067] Step 4: Start the quantitative feeding mechanism 400. The movement of the quantitative feeding mechanism 400 drives the movement of the sealing mechanism 500, thereby dynamically sealing the discharge port of the mixing hopper 100 and achieving quantitative feeding. The material is fed into the extruder 700, and finally, the extrusion work is completed by the extruder 700. (The working principle of the extruder 700 is as known in this technical field. After the material enters the extruder 700, the motor drives the screw to rotate inside the barrel. The material in the hopper falls into the screw groove by gravity, and is pushed by the rotating screw.) The material is conveyed along the screw groove towards the die head. Simultaneously, the shear and frictional heat generated by the external heating device of the barrel and the rotation of the screw raises the material temperature above the melting point, changing it from a solid to a viscous flow state, thus achieving melting and plasticization. During this process, the material is stirred and mixed more evenly. Finally, the molten material is pushed towards the die head by the screw. Due to the small die head orifice size, an obstruction is formed, generating pressure that forces the material to be extruded through the die, forming products of specific shapes and sizes. By adjusting the screw speed and back pressure, the flow rate and pressure of the extruded material can be controlled, thereby controlling the product quality.

[0068] Working principle of the invention:

[0069] Material addition: Edge materials and auxiliary materials are added into the mixing hopper 100 through the two feed ports 101 at the top of the mixing hopper 100, respectively. At the same time, the material in the storage tank 601 is fed into the mixing hopper 100 through the feed pipe by the pump.

[0070] Material mixing: Start the servo motor 102. The output end of the servo motor 102 drives the bevel gear A to rotate. The bevel gear A meshes with the bevel gear B103 and the bevel gear C104, causing the inner rod 301 and the outer rod 303 to rotate in opposite directions. The inner ring stirring rod 302 and the outer ring stirring rod 305 perform bidirectional stirring of the material, realizing all-round mixing of the material.

[0071] Quantitative feeding: The evenly mixed material falls into the discharge port of the mixing hopper 100. The electric slide rail 402 is started, which drives the electric slider and the quantitative bin 403 to move. The quantitative bin 403 contains a quantitative amount of material in the left cavity. When the quantitative bin 403 moves to the bottom of the flow pipe 401, the baffle 503 is in the open state, and the material flows into the interior of the quantitative bin 403. After the material fills the quantitative bin 403, the electric slide rail 402 drives the quantitative bin 403 to move. The fixed plate on its right side blocks the outlet of the flow pipe 401. At the same time, the movable plate 404 is opened under the support of the straight plate, and the material in the quantitative bin 403 is discharged.

[0072] Discharge port sealing: When the metering bin 403 moves, the power rod 501 fixedly connected to it drives the auxiliary rod 502 and the baffle plate 503 to move. When the metering bin 403 is not directly below the discharge port of the mixing hopper 100, the baffle plate 503 blocks the discharge port of the mixing hopper 100 to prevent the material from flowing out in advance. When the metering bin 403 is directly below the discharge port of the mixing hopper 100, the baffle plate 503 moves away, and the material can smoothly enter the metering bin 403.

[0073] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A biodegradable material scrap extrusion mixing device, comprising a mixing hopper (100), wherein the upper end of the mixing hopper (100) has two feed inlets (101) for adding scrap and auxiliary materials respectively, characterized in that: A support frame (200) is fixedly connected to the bottom of one end of the mixing hopper (100), and a mixing mechanism (300) for all-round mixing of materials is provided inside the mixing hopper (100); a quantitative feeding mechanism (400) is installed below the mixing hopper (100). After the material is mixed in both directions by the mixing mechanism (300), it is conveyed to the quantitative feeding mechanism (400). A sealing mechanism (500) is provided on one side of the quantitative feeding mechanism (400) to close the outlet of the mixing hopper (100). When the quantitative feeding mechanism (400) moves, the generated moving force pushes the sealing mechanism (500) to open and close to control the outflow of materials; the quantitative feeding mechanism (400) includes a flow pipe (401) located below the outlet of the mixing hopper (100). The sealing mechanism (500) includes a power rod (501) fixedly connected to the fixed plate on the right side of the metering bin (403). An auxiliary rod (502) is fixedly installed on the top of the power rod (501). A baffle plate (503) is fixedly connected to one end of the auxiliary rod (502) for sealing the outlet of the mixing hopper (100). A fixed cover is fixedly installed on one end of the mixing hopper (100). The surface of the fixed cover has an opening that matches the auxiliary rod (502). The movable port is provided for the movement of the auxiliary rod (502); the number of the shielding plate (503) is set to two. When the quantitative bin (403) is located on the right side of the flow pipe (401), the shielding plate (503) located on the left side of the flow pipe (401) blocks the discharge port of the mixing hopper (100). When the quantitative bin (403) is located on the left side of the flow pipe (401), the shielding plate (503) located on the right side of the flow pipe (401) blocks the discharge port of the mixing hopper (100). An electric slide rail (402) is fixedly installed on the bottom surface of the flow pipe (401), and a stabilizing frame is fixedly connected to the top surface of one end of the electric slide rail (402). The top surface of the stabilizing frame is connected to the mixing hopper (100). An electric slider is slidably connected inside the electric slide rail (402), and a metering chamber (403) is fixedly connected to the surface of the electric slider. The left side of the metering chamber (403) is a cavity for metering materials, and the right side of the metering chamber (403) is a fixed plate for blocking the outlet of the flow pipe (401) when the metering chamber (403) discharges materials. A movable plate (404) is hinged to the bottom surface of one side of the cavity of the metering chamber (403) for opening and closing the cavity of the metering chamber (403). A straight plate is slidably connected to the bottom surface of the movable plate (404) for supporting the electric slide rail (402).

2. The biodegradable material scrap extrusion mixing device according to claim 1, characterized in that: A servo motor (102) is fixedly installed on the top of the fixed cover. The output end of the servo motor (102) is splined connected to a bevel gear A, and bevel gear B (103) and bevel gear C (104) are meshed at the outer edge of bevel gear A.

3. The biodegradable material scrap extrusion mixing device according to claim 1, characterized in that: The other end of the mixing hopper (100) is provided with a feeding mechanism (600), which includes a feeding pipe that is connected to the mixing hopper (100). The input end of the feeding pipe is connected to a pump, and the input end of the pump is connected to a storage tank (601). The top of the storage tank (601) is provided with a feed inlet.

4. The biodegradable material scrap extrusion mixing device according to claim 1, characterized in that: The support frame (200) has a groove on the side opposite to the quantitative feeding mechanism (400) to provide space for the movement of the quantitative feeding mechanism (400). An extruder (700) is fixedly installed on the bottom surface of the quantitative feeding mechanism (400), and the extruder (700) is connected to the support frame (200).

5. The biodegradable material scrap extrusion mixing device according to claim 1, characterized in that: The stirring mechanism (300) includes an inner rod (301) fixedly connected to a bevel gear B (103), and an inner ring stirring rod (302) for stirring materials is fixedly connected to the surface of the inner rod (301); an outer rod (303) is rotatably connected to the outer wall of the top end of the inner rod (301), one end of the outer rod (303) is fixedly connected to a bevel gear C (104), and the end of the outer rod (303) near the fixed cover is rotatably connected to the fixed cover; a rotating plate (304) is fixedly connected to the end of the outer rod (303) near the inner ring stirring rod (302), and an outer ring stirring rod (305) is fixedly connected to the bottom surface of the rotating plate (304); the inner ring stirring rod (302) and the outer ring stirring rod (305) cooperate to form bidirectional stirring.

6. A biodegradable material scrap extrusion mixing process, implemented using the biodegradable material scrap extrusion mixing device as described in any one of claims 1-5, characterized in that: The method includes the following steps: Step 1: After placing the biodegradable material scraps into the feeding mechanism (600), the biodegradable scraps are fed into the mixing hopper (100) through the feeding mechanism (600); Step 2: Turn on the stirring switch on the mixing hopper (100), adjust the speed to 100 rpm, and stir for 2 minutes. Use the stirring mechanism (300) in the mixing hopper (100) to stir the material in both directions so that the material is fully mixed; Step 3: Reduce the stirring speed to 50 rpm, add the auxiliary material through another feeding port, then adjust the speed to 100 rpm and stir for 5 minutes. Use the stirring mechanism (300) again to stir the material, adjust the speed to 100 rpm, and stir for 5 minutes. Step 4: Start the quantitative feeding mechanism (400). The movement of the quantitative feeding mechanism (400) drives the movement of the sealing mechanism (500) to dynamically seal the outlet of the mixing hopper (100), thereby achieving quantitative feeding and feeding the material into the extruder (700). Finally, adjust the parameters of the metering pump, extruder (700), rollers, etc., to ensure that the sheet is extruded smoothly and then the winding and packaging can be completed.

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