A plastic extruder for producing anaerobic biodegradable plastics

Abstract

The present invention relates to the technical field of plastic extruders, and discloses a plastic extruder for producing anaerobic biodegradable plastics, including plastic extrusion equipment, a feed tank, a fixed plate, a material guide structure, a driving structure, a vibration structure, a discharge structure, two fixed frames, two outer cylinders and two feeding structures; wherein the feed tank is arranged on the plastic extrusion equipment, an opening is provided at the bottom of the feed tank, the two fixed frames are fixed on the outer peripheral surface of the feed tank, and the fixed plate is arranged above the feed tank. The present invention ensures that the materials can fall into the inside of the feed tank alternately, and under the rotation of the material guide seat, the plastic raw materials and additives are stacked in a stacked state, which greatly promotes the uniform mixing between them, improves the mixing efficiency and mixing quality, and provides a more stable and high-quality raw material basis for the subsequent plastic processing process.

Description

Technical Field

[0001] The invention relates to the technical field of plastic extruders, in particular to a plastic extruder for producing anaerobic biodegradable plastics. Background Art

[0002] A plastic extruder used to produce anaerobic biodegradable plastics is a specially designed piece of machinery that converts anaerobic biodegradable plastic raw materials into plastic products of various shapes and sizes through process steps such as heating, melting and extrusion.

[0003] In the process of producing degradable plastics, workers need to add specific additives to the raw materials to make the produced plastics have a degradable function. In the prior art, after searching, a Chinese patent with a publication number of CN217670980U discloses an extruder for producing biodegradable material products, including a control machine, an extruder body, a hopper, multiple groups of heating rings, multiple groups of sliders, multiple groups of locking blocks, multiple groups of slide plates, multiple groups of top columns, multiple groups of second springs and multiple groups of pressure blocks. The extruder body is installed on the top of the control machine, and the extruder body and the control machine are electrically connected. The bottom end of the upper hopper is connected to the extruder body, and multiple groups of heating coils are respectively coiled on the extruder body. A docking plate and a docking groove are provided on the front side of each group of heating coils, and the docking plate can be docked with the docking groove. Both ends of the docking plate are provided with cavities, and each group of cavities is provided with a spring. The slider is slidably installed in the cavity through the spring. The left and right ends of the docking plate are provided with a first sliding hole connected to the cavity, and the locking block is fixedly connected with the slider. Two groups of locking holes are symmetrically provided in the heating coil. Through the above arrangement, it is easy to disassemble and assemble the heating coil, and the convenience is improved. However, the above scheme still has the following shortcomings when it is actually used:

[0004] In the above scheme, when the plastic extruder is in use, the staff puts additives into the hopper, and the additives and the plastic raw materials are mixed with each other under the action of the extrusion screw. However, this mixing method has the disadvantage of uneven mixing, which is specifically manifested as follows: first, the mixing process of the additives and the plastic raw materials in the extrusion screw may be affected by many factors, such as the design, rotation speed, temperature of the screw, and the physical properties of the raw materials and additives, etc. These factors may cause the additives to be unevenly distributed in the plastic raw materials, thereby affecting the performance and quality of the final product. Secondly, since the addition of additives is usually done by manual operation, there may be problems of uneven addition or inaccurate addition, which will not only cause uneven mixing of the additives in the plastic raw materials, but also may waste materials or reduce production efficiency. In addition, uneven mixing may also cause plastic products to have quality problems such as uneven color, reduced strength, and easy aging during the extrusion process, which will affect the appearance and service life of the product.

[0005] Therefore, it is necessary to design a plastic extruder for producing anaerobic biodegradable plastics to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a plastic extruder for producing anaerobic biodegradable plastics.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A plastic extruder for producing anaerobic biodegradable plastics, comprising a plastic extrusion device, a feed tank, a fixing plate, a material guide structure, a driving structure, a vibration structure, a discharge structure, two fixing frames, two outer cylinders and two feeding structures;

[0009] Wherein, the feed tank is arranged on the plastic extrusion equipment, an opening is provided at the bottom of the feed tank, the two fixing frames are fixed on the outer peripheral surface of the feed tank, the fixing plate is arranged above the feed tank, and the ends of the two fixing frames away from the feed tank are fixedly connected to the two ends of the fixing plate respectively;

[0010] The two outer cylinders are both arranged above the feed tank, the tops of the two outer cylinders are both open, and the bottom surfaces of the two outer cylinders are both provided with a material drop opening;

[0011] The two feeding structures are respectively arranged inside the two outer cylinders, and the two outer cylinders are both provided with a pusher for vibrating the feeding structure;

[0012] Wherein, the material guiding structure is arranged between the two outer cylinders and the feed tank;

[0013] Wherein, the driving structure is arranged on one side of the fixed plate, and is used to drive the material guiding structure to rotate;

[0014] Wherein, the vibration structure is composed of an air supply member and an actuator, both of which are arranged on a fixed plate, and the actuator is used to drive the top moving member to operate;

[0015] Wherein, the discharge structure is arranged at the bottom of the feed tank and is used to control the discharge.

[0016] As a preferred technical solution of the present invention, the feeding structure includes two fixed rings, an inner tank and two flexible connecting rings, the two flexible connecting rings are respectively fixed on the inner rings of the two fixed rings, the two ends of the inner tank are respectively connected to the two flexible connecting rings, and a discharge port is provided at the bottom of the inner tank, and the discharge port is arranged opposite to the discharge port.

[0017] As a preferred technical solution of the present invention, there is a gap between the inner shell and the inner surface of the outer cylinder, and the bottom surface of the inner shell and the inner bottom surface of the outer cylinder fit each other.

[0018] As a preferred technical solution of the present invention, the material guiding structure includes a material guiding seat, a material guiding channel and a rotating shaft. The material guiding seat is arranged directly above the feed tank, and the material guiding channel is opened on the material guiding seat. Both ends of the material guiding channel extend to the top and bottom surfaces of the material guiding seat respectively. The top opening of the material guiding channel is located at the edge of the top surface of the material guiding seat, and the bottom opening of the material guiding channel is located at the center of the bottom surface of the material guiding seat and is arranged directly opposite the feed tank. The rotating shaft is fixed at the center of the top surface of the material guiding seat, and the end of the rotating shaft away from the material guiding seat is rotatably mounted on the fixed plate.

[0019] As a preferred technical solution of the present invention, the pushing member includes a push rod, a sleeve plate and a spring. An adapter port is provided on the outer surface of the outer cylinder. The push rod slides in the adapter port. One end of the push rod is located inside the outer cylinder and abuts against the inner tank. The other end of the push rod extends to the outside of the outer cylinder and is fixedly connected to the sleeve plate. One end of the spring is connected to the outer surface of the outer cylinder, and the other end of the spring is connected to the sleeve plate.

[0020] As a preferred technical solution of the present invention, the driving structure includes a connecting frame, a driving motor, a reciprocating screw and a moving seat, the connecting frame is fixed on two fixed frames, and the connecting frame is a U-shaped structure, the driving motor is installed on the connecting frame, one end of the reciprocating screw is fixedly connected to the output shaft of the driving motor, and the other end of the reciprocating screw is rotatably installed on the connecting frame, the moving seat is threadedly sleeved on the reciprocating screw, a guide rod is fixed on the connecting frame, the moving seat is slidably sleeved on the guide rod, a rack is fixed on one side of the moving seat, and a first gear is fixedly sleeved on the end of the rotating shaft away from the material guide seat, and the first gear is arranged opposite to the rack.

[0021] As a preferred technical solution of the present invention, the actuator includes a follower plate, a telescopic member and an extrusion plate, the follower plate is fixedly sleeved on the rotating shaft, one end of the telescopic member is connected to the follower plate, and the other end of the telescopic member is connected to the extrusion plate, and the extrusion plate is provided with an inclined extrusion surface;

[0022] The telescopic member includes a first sealing cylinder, a first sliding rod and a first connecting spring. The first sealing cylinder is fixed to the bottom surface of the follower plate. The first sliding rod is sealingly and slidingly connected to the inside of the first sealing cylinder. The bottom end of the first sliding rod extends to the outside of the first sealing cylinder and is fixedly connected to the extrusion plate. One end of the first connecting spring is connected to the first sealing cylinder, and the other end is connected to the first sliding rod.

[0023] As a preferred technical solution of the present invention, the air supply member includes a shaft, an eccentric wheel, an inflatable member and a connecting pipe, the shaft passes through a fixed plate and is rotatably mounted on the fixed plate, the eccentric wheel fixing sleeve is arranged at the top position of the shaft, and the eccentric wheel and the shaft are eccentrically arranged, the inflatable member is arranged on the top surface of the fixed plate, and the inflatable member is arranged opposite to the eccentric wheel, one end of the connecting pipe is connected to the inflatable member, and the other end is connected to the telescopic member, the bottom fixed sleeve of the shaft is provided with a second gear, and the second gear is arranged opposite to the rack;

[0024] The inflatable part includes a second sealing cylinder, a second sliding rod and a second connecting spring. The second sealing cylinder is fixed on the top surface of the fixed plate. The second sliding rod is sealingly and slidingly connected to the inside of the second sealing cylinder. The bottom end of the second sliding rod extends to the outside of the second sealing cylinder and is arranged opposite to the eccentric wheel. One end of the second connecting spring is connected to the second sealing cylinder, and the other end is connected to the second sliding rod.

[0025] As a preferred technical solution of the present invention, the discharge structure includes a discharge seat, a discharge valve plate and a discharge cylinder. The discharge seat is arranged between the feed tank and the plastic extrusion equipment. The discharge seat is a frame structure, and the discharge seat is arranged opposite to the opening at the bottom of the feed tank. The discharge valve plate is slidably installed on the discharge seat, and the discharge cylinder is installed on the discharge seat, and the telescopic end of the discharge cylinder is fixedly connected to the discharge valve plate.

[0026] As a preferred technical solution of the present invention, a material guide block with a triangular cross-section is fixed to the top surface of the follower plate.

[0027] The present invention has the following beneficial effects:

[0028] 1. The movement of the moving seat drives the rack to reciprocate, and then drives the rotation of the first gear and the rotating shaft, so that the material guide seat and the material guide channel can periodically align with the drop openings on the two outer cylinders. This design not only ensures that the materials can fall into the feed tank alternately, but also under the rotation of the material guide seat, the plastic raw materials and additives are stacked in a stacked state, which greatly promotes the uniform mixing between them, improves the mixing efficiency and mixing quality, and provides a more stable and high-quality raw material basis for the subsequent plastic processing process;

[0029] 2. The linkage mechanism of the second gear, shaft and eccentric wheel driven by the rack realizes the auxiliary promotion effect on the smooth flow of materials. Specifically, the rotation of the eccentric wheel continuously squeezes the second slide bar, and the first slide bar and the extrusion plate are pushed up and down by the transmission of gas. In this process, the inclined surface on the extrusion plate cooperates with the elastic force of the spring to make the push rod vibrate, thereby driving the vibration of the inner tank. The vibration of the inner tank not only helps the material to enter the material guide channel smoothly, but also effectively avoids the occurrence of material jamming, ensuring the continuity and stability of material flow, thereby improving the efficiency and reliability of material processing;

[0030] 3. By using a flexible connecting ring made of a material that can deform to a certain extent, such as rubber, to connect the two ends of the inner liner to the fixed ring, this design allows the inner liner to vibrate smoothly and not easily deform when it is vibrated by the thrust of the ejector rod. The elastic characteristics of the flexible connecting ring effectively absorb the impact force during the vibration process, protect the structural integrity of the inner liner, and extend the service life of the inner liner. Secondly, the bottom surface of the inner liner and the inner bottom surface of the outer cylinder fit each other. This design prevents the material from entering the gap between the inner liner and the outer cylinder during the vibration of the inner liner. This tight fit not only reduces the possibility of material leakage, but also maintains the continuity and stability of material flow, ensuring the smooth progress of the material processing process;

[0031] 4. The follower plate can rotate with the rotating shaft and cleverly synchronize with the rotation of the material guide seat to ensure that when the material guide channel is discharging materials from a certain outer cylinder, the actuator also rotates to the position of the ejector on the outer cylinder. This precise timing coordination allows the inner liner that is discharging to be driven by the actuator to vibrate, effectively promoting the smooth discharge of materials. Secondly, this design cleverly realizes the on-demand distribution of vibration action, that is, vibration is only generated on the inner liner that needs to be discharged, while the other inner liner remains stationary. This design not only avoids unnecessary noise and wear of the device, but also improves the efficiency of energy utilization, making the operation of the entire device more stable and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic structural diagram of a plastic extruder for producing anaerobic biodegradable plastics proposed by the present invention;

[0033] Figure 2 It is a schematic diagram of the structure of two outer cylinders and a feed tank;

[0034] Figure 3 for Figure 2 A magnified view of the structure at A;

[0035] Figure 4 It is a structural schematic diagram of the two outer cylinders and the feed tank from another perspective;

[0036] Figure 5 for Figure 4 A magnified view of the structure at B;

[0037] Figure 6 It is a schematic diagram of the cross-sectional structure of two outer cylinders and a feed tank;

[0038] Figure 7 for Figure 6 A magnified view of the structure at C;

[0039] Figure 8 for Figure 6 A magnified view of the structure at D;

[0040] Fig. 9 It is a schematic diagram of the cross-sectional structure of the feed tank;

[0041] Fig.10 for Fig. 9 A magnified view of the structure at E;

[0042] Fig.11 It is a structural schematic diagram of the feeding structure.

[0043] In the figure: 1. plastic extrusion equipment; 2. feed tank; 3. fixed frame; 4. fixed plate; 5. outer cylinder; 61. fixed ring; 62. flexible connecting ring; 63. liner; 64. discharge port; 71. guide seat; 72. guide channel; 73. rotating shaft; 81. push rod; 82. sleeve plate; 83. spring; 91. connecting frame; 92. driving motor; 93. reciprocating screw rod; 94. guide rod; 95. moving seat; 96. rack; 97. first gear; 101. follower plate; 102. telescopic member; 103. extrusion plate; 111. shaft; 112. eccentric wheel; 113. inflatable member; 114. connecting pipe; 115. second gear; 121. discharge seat; 122. discharge valve plate; 123. discharge cylinder. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0045] Reference Figure 1-11A plastic extruder for producing anaerobic biodegradable plastics, comprising a plastic extrusion device 1, a feed tank 2, a fixed plate 4, a material guiding structure, a driving structure, a vibration structure, a discharge structure, two fixed frames 3, two outer cylinders 5 and two feeding structures, wherein the feed tank 2 is arranged on the plastic extrusion device 1, an opening is opened at the bottom of the feed tank 2, the two fixed frames 3 are fixed on the outer peripheral surface of the feed tank 2, the fixed plate 4 is arranged above the feed tank 2, the ends of the two fixed frames 3 away from the feed tank 2 are respectively fixedly connected to the two ends of the fixed plate 4, and the two outer cylinders 5 are arranged above the feed tank 2 (such as Figure 6 As shown), the tops of the two outer cylinders 5 are open, and the bottom surfaces of the two outer cylinders 5 are provided with a material drop opening;

[0046] The two feeding structures are respectively arranged inside the two outer cylinders 5. The two outer cylinders 5 are provided with a pusher for vibrating the feeding structure. The feeding structure includes two fixed rings 61, an inner liner 63 and two flexible connecting rings 62. The two flexible connecting rings 62 are respectively fixed to the inner rings of the two fixed rings 61 (such as Fig.11 As shown in FIG. 1 , the two ends of the inner liner 63 are respectively connected to two flexible connecting rings 62, a gap is provided between the inner liner 63 and the inner surface of the outer cylinder 5, the bottom surface of the inner liner 63 and the inner bottom surface of the outer cylinder 5 are mutually fitted, a discharge port 64 is provided at the bottom of the inner liner 63, and the discharge port 64 is arranged opposite to the blanking port, and the ejector includes an ejector rod 81, a sleeve plate 82 and a spring 83 (as shown in FIG. Figure 2 As shown in the figure, the outer surface of the outer cylinder 5 is provided with an adapter port, and the push rod 81 slides in the adapter port, one end of the push rod 81 is located inside the outer cylinder 5 and abuts against the inner liner 63, the other end of the push rod 81 extends to the outside of the outer cylinder 5 and is fixedly connected to the sleeve plate 82, one end of the spring 83 is connected to the outer surface of the outer cylinder 5, and the other end of the spring 83 is connected to the sleeve plate 82;

[0047] The material guiding structure is arranged between the two outer cylinders 5 and the feed tank 2, and the material guiding structure includes a material guiding seat 71, a material guiding channel 72 and a rotating shaft 73. The material guiding seat 71 is arranged directly above the feed tank 2, and the material guiding channel 72 is opened on the material guiding seat 71. The two ends of the material guiding channel 72 extend to the top surface and the bottom surface of the material guiding seat 71 respectively. The top opening of the material guiding channel 72 is located at the edge position of the top surface of the material guiding seat 71, and the bottom opening of the material guiding channel 72 is located at the center position of the bottom surface of the material guiding seat 71, and is arranged directly opposite to the feed tank 2. The rotating shaft 73 is fixed at the center position of the top surface of the material guiding seat 71, and the rotating shaft 73 (such as Figure 8 One end of the guide seat 71 is rotatably mounted on the fixed plate 4;

[0048] The driving structure is arranged on one side of the fixed plate 4, and is used to drive the material guiding structure to rotate. The driving structure includes a connecting frame 91, a driving motor 92, a reciprocating screw rod 93 and a moving seat 95. The connecting frame 91 is fixed on the two fixed frames 3, and the connecting frame 91 is a U-shaped structure. The driving motor 92 is installed on the connecting frame 91 (such as Figure 5 As shown, one end of the reciprocating screw rod 93 is fixedly connected to the output shaft of the driving motor 92, and the other end of the reciprocating screw rod 93 is rotatably mounted on the connecting frame 91, and the moving seat 95 (as shown Fig. 9 The first gear 97 is arranged opposite to the rack 96. During the movement of the rack 96, the rack 96 will first mesh with the first gear 97 and drive the first gear 97 to rotate. When the first gear 97 rotates, it can drive the rotating shaft 73 to rotate, so that the rotating shaft 73 drives the material guide seat 71 to rotate. When the rack 96 is separated from the first gear 97, the first gear 97 and the rotating shaft 73 rotate exactly 180°, so that the material guide seat 71 rotates 180°. When the material guide seat 71 rotates 180°, the material guide channel 72 rotates exactly to the blanking port facing the bottom of the other outer cylinder 5. , at this time, the material in the inner liner 63 inside the other outer cylinder 5 will fall into the guide channel 72 through the corresponding discharge port 64 and the drop port. During the resetting process of the rack 96, the rack 96 will mesh with the first gear 97 again, and drive the first gear 97 and the rotating shaft 73 to rotate in the opposite direction. When the rotating shaft 73 rotates in the opposite direction, the guide channel 72 will also rotate in the opposite direction and finally rotate to the initial position. Based on the above process, during the reciprocating movement of the rack 96, the top opening of the guide channel 72 will periodically align with the two drop ports on the two outer cylinders 5, so that the materials in the two inner liners 63 can alternately fall into the inside of the feed tank 2, that is, under the rotation of the guide seat 71, the plastic raw materials and additives will be stacked in the inside of the feed tank 2 in a stacked state, which is conducive to the uniform mixing of the plastic raw materials and the additives.

[0049] The vibration structure is composed of an air supply member and an actuator, both of which are arranged on the fixed plate 4. The actuator is used to drive the top moving member to operate. The actuator includes a follower plate 101, a telescopic member 102 and an extrusion plate 103. The follower plate 101 is fixedly sleeved on the rotating shaft 73. A guide block with a triangular cross-section is fixed on the top surface of the follower plate 101. One end of the telescopic member 102 is connected to the follower plate 101, and the other end of the telescopic member 102 is connected to the extrusion plate 103. An inclined extrusion surface is provided on the extrusion plate 103; the telescopic member 102 includes a first sealing cylinder, a first sliding rod and a first connecting spring. The first sealing cylinder is fixed to the bottom surface of the follower plate 101, and the first sliding rod is sealingly slidably connected to the inside of the first sealing cylinder. The bottom end of the first sliding rod extends to The outside of the first sealing cylinder is fixedly connected to the extrusion plate 103, one end of the first connecting spring is connected to the first sealing cylinder, and the other end is connected to the first sliding rod. The air supply part includes a shaft 111, an eccentric wheel 112, an inflatable part 113 and a connecting pipe 114. The shaft 111 passes through the fixed plate 4 and is rotatably installed on the fixed plate 4. The eccentric wheel 112 is fixedly sleeved at the top position of the shaft 111, and the eccentric wheel 112 is eccentrically arranged between the shaft 111, the inflatable part 113 is arranged on the top surface of the fixed plate 4, and the inflatable part 113 is arranged opposite to the eccentric wheel 112. One end of the connecting pipe 114 is connected to the inflatable part 113, and the other end is connected to the telescopic part 102. The bottom fixed sleeve of the shaft 111 is provided with a second gear 115 (such as Figure 6 As shown), the second gear 115 is arranged opposite to the rack 96; the inflatable member 113 includes a second sealing cylinder, a second sliding rod and a second connecting spring. The second sealing cylinder is fixed on the top surface of the fixed plate 4, and the second sliding rod is sealingly slidably connected to the inside of the second sealing cylinder. The bottom end of the second sliding rod extends to the outside of the second sealing cylinder and is arranged opposite to the eccentric wheel 112. One end of the second connecting spring is connected to the second sealing cylinder, and the other end is connected to the second sliding rod. In the process of the rack 96 driving the second gear 115 to rotate, the extrusion plate 103 will continuously move up and down under the cooperation of the air supply member and the actuator. In this process, the inclined surface on the extrusion plate 103 will squeeze the end position of the push rod 81, and at the same time, with the elastic force of the spring 83, the push rod 81 will vibrate. When the push rod 81 vibrates, it will continuously push the inner liner 63, so that the inner liner 63 will vibrate. The vibration action of the inner liner 63 is conducive to the smooth entry of the material into the guide channel 72, avoiding the phenomenon of material jamming;

[0050] The discharge structure is arranged at the bottom of the feed tank 2 for controlling the discharge. The discharge structure comprises a discharge seat 121, a discharge valve plate 122 and a discharge cylinder 123 (such as Fig.10As shown in the figure, the discharge seat 121 is arranged between the feed tank 2 and the plastic extrusion equipment 1, the discharge seat 121 is a frame structure, and the discharge seat 121 is arranged opposite to the opening at the bottom of the feed tank 2, the discharge valve plate 122 is slidably installed on the discharge seat 121, the discharge cylinder 123 is installed on the discharge seat 121, and the telescopic end of the discharge cylinder 123 is fixedly connected to the discharge valve plate 122. During production, the staff first controls the position of the discharge valve plate 122 through the discharge cylinder 123, so that the discharge valve plate 122 blocks the discharge seat 1 21. At this time, the opening at the bottom of the feed tank 2 is blocked by the discharge valve plate 122, and the material cannot enter the interior of the plastic extrusion equipment 1 through the feed tank 2. After the mixing action is completed, the staff controls the discharge valve plate 122 through the discharge cylinder 123 again to move the discharge valve plate 122 until the discharge valve plate 122 is offset from the opening at the bottom of the feed tank 2. Without the obstruction of the discharge valve plate 122, the mixed material in the feed tank 2 will fall into the interior of the plastic extrusion equipment 1 through the opening and carry out the subsequent extrusion process.

[0051] The specific working principle of the present invention is as follows:

[0052] When the plastic extruder for producing anaerobic biodegradable plastics proposed by the present invention is in use, the staff puts plastic raw materials into one of the inner liner 63 and puts additives into the other inner liner 63. During production, the staff first controls the position of the discharge valve plate 122 through the discharge cylinder 123, so that the discharge valve plate 122 blocks the discharge seat 121. At this time, the opening at the bottom of the feed tank 2 is blocked by the discharge valve plate 122, and the material cannot enter the interior of the plastic extrusion equipment 1 through the feed tank 2. In addition, the staff starts the drive motor 92, and the drive motor 92 drives the reciprocating screw rod 93 to rotate when it is running. Within the limit of the guide rod 94, the reciprocating screw rod 93 is driven to rotate. Under the action of the position, the reciprocating screw rod 93 can drive the moving seat 95 to move when it rotates, so that the moving seat 95 moves from one end of the connecting frame 91 toward the other end of the connecting frame 91. When the moving seat 95 moves, the rack 96 thereon will move accordingly. In the initial state, the top opening of the guide channel 72 is directly opposite to the blanking opening on one of the outer cylinders 5. In this case, the material in the inner liner 63 inside the outer cylinder 5 will fall into the guide channel 72 through the corresponding discharge opening 64 and the blanking opening, and fall into the interior of the feed tank 2 through the guide channel 72. During the movement of the rack 96, the rack 96 will first mesh with the first gear 97 , and drives the first gear 97 to rotate. When the first gear 97 rotates, it can drive the rotating shaft 73 to rotate, so that the rotating shaft 73 drives the material guide seat 71 to rotate. When the rack 96 is separated from the first gear 97, the first gear 97 and the rotating shaft 73 rotate exactly 180°, so that the material guide seat 71 rotates 180°. When the material guide seat 71 rotates 180°, the material guide channel 72 rotates exactly to a position facing the blanking port at the bottom of the other outer cylinder 5. At this time, the material in the inner liner 63 inside the other outer cylinder 5 will fall into the material guide channel 72 through the corresponding discharge port 64 and the blanking port. During the resetting process of the rack 96, the rack 96 will The gear 97 is meshed with the first gear 97 again, and the first gear 97 and the rotating shaft 73 are driven to rotate in the opposite direction. When the rotating shaft 73 rotates in the opposite direction, the material guide channel 72 also rotates in the opposite direction, and finally rotates to the initial position. Based on the above process, during the reciprocating movement of the rack 96, the top opening of the material guide channel 72 will periodically align with the two drop openings on the two outer cylinders 5, so that the materials in the two inner tanks 63 can alternately fall into the inside of the feed tank 2, that is, under the rotation of the material guide seat 71, the plastic raw materials and additives will be stacked in the inside of the feed tank 2 in a stacked state, which is conducive to the uniform mixing of the plastic raw materials and the additives;

[0053] After completing the feeding of the plastic raw materials and additives, the staff starts the stirring structure on the feed tank 2, and uses the stirring structure to stir and mix the plastic raw materials and additives. Since the plastic raw materials and additives are stacked in a stacked state inside the feed tank 2, the stirring action can make the plastic raw materials and additives mix quickly and evenly. Compared with the traditional method of mixing using an extruder screw, the mixing method proposed in the present invention can improve the mixing uniformity between the plastic raw materials and the additives, thereby ensuring the quality of the finished product of the degradable plastic. After the mixing action is completed, the staff controls the discharge valve plate 122 through the discharge cylinder 123 again to move the discharge valve plate 122 until the discharge valve plate 122 is offset from the opening at the bottom of the feed tank 2. Without the obstruction of the discharge valve plate 122, the mixed material in the feed tank 2 will fall into the interior of the plastic extrusion equipment 1 through the opening, and the subsequent extrusion process will be carried out;

[0054] In the present invention, in order to ensure that the material inside the inner container 63 can smoothly enter the material guide channel 72 and avoid the granular material from getting stuck near the discharge port 64 at the bottom of the inner container 63, the present invention also designs a vibration structure for causing the inner container 63 to vibrate. The vibration structure is composed of an air supply member and an actuator. When the rotating shaft 73 rotates, the follower plate 101 at the top of the rotating shaft 73 will rotate accordingly. When the material guide channel 72 is facing the discharge port at the bottom of a certain outer cylinder 5, the actuator arranged on the follower plate 101 is just facing the ejecting member on the outer cylinder 5. In this case, the actuator will drive the ejecting member to operate, so that the outer cylinder 5 The inner liner 63 inside the outer cylinder 5 produces a vibrating effect, and the vibration action causes the material accumulated inside the inner liner 63 to vibrate accordingly, which is conducive to the material sliding smoothly into the material guide channel 72 through the discharge port 64 at the bottom of the inner liner 63. Specifically, after the rack 96 is separated from the first gear 97, the material guide channel 72 just rotates to a position facing a discharge port on the bottom surface of a certain outer cylinder 5. At this time, the actuator on the follower plate 101 just faces the top moving member on the outer cylinder 5. With the continued movement of the rack 96, the rack 96 can drive the second gear 115 to rotate, so that the second gear 115 drives the shaft 111 to rotate, and when the shaft 111 rotates, The eccentric wheel 112 can be driven to rotate. The eccentric wheel 112 will continuously squeeze the second slide bar during the rotation. When the eccentric wheel 112 squeezes the second slide bar, the second slide bar can move and press the gas inside the second sealing cylinder into the first sealing cylinder through the connecting pipe 114. When the gas enters the first sealing cylinder, the gas will push the first slide bar to move, so that the first slide bar drives the squeezing plate 103 to move downward. When the eccentric wheel 112 is separated from the second slide bar, the second slide bar will reset under the elastic force of the second connecting spring. When the second slide bar is reset, the air in the first sealing cylinder can be extracted through the connecting pipe 114, so that the first slide bar and the second slide bar can be connected. The extrusion plate 103 is reset under the action of the first connection spring. Based on the above process, when the rack 96 drives the second gear 115 to rotate, the extrusion plate 103 will continuously move up and down under the cooperation of the air supply member and the actuator. In this process, the inclined surface on the extrusion plate 103 will squeeze the end position of the push rod 81, and at the same time, with the elastic force of the spring 83, the push rod 81 will vibrate. When the push rod 81 vibrates, it will continuously push the inner liner 63, so that the inner liner 63 will vibrate. The vibration action of the inner liner 63 is conducive to the smooth entry of the material into the material guide channel 72, avoiding the phenomenon of material jamming.

[0055] It is worth noting that, for the inner liner 63, both ends of the inner liner 63 are connected to the two fixing rings 61 through a flexible connecting ring 62. The flexible connecting ring 62 can be made of a material that can be deformed to a certain extent, such as rubber, so that the inner liner 63 can smoothly produce a vibration effect, and prevent the thrust exerted on the inner liner 63 by the top rod 81 from causing the inner liner 63 to deform. In addition, the bottom surface of the inner liner 63 and the inner bottom surface of the outer cylinder 5 fit each other, so that the material of the inner liner 63 can be prevented from entering the gap between the inner liner 63 and the outer cylinder 5 during the vibration process.

[0056] It should also be explained that the design of the follower plate 101 in the present invention enables the actuator to drive the inner liner 63 performing the discharge action to vibrate. This is because the follower plate 101 rotates following the rotating shaft 73. When the rotation drives the guide seat 71 to rotate, the follower plate 101 will rotate accordingly. When the guide channel 72 is facing a certain outer cylinder 5, the actuator also happens to rotate to a position facing the pusher on the outer cylinder 5. This design allows the inner liner 63 performing the discharge action to vibrate, while the other inner liner 63 will not vibrate, thereby avoiding unnecessary noise and wear of the device, which is beneficial to the overall stable operation of the device.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A plastic extruder for producing anaerobic biodegradable plastics, characterized in that: It includes plastic extrusion equipment, a feed tank, a fixing plate, a material guiding structure, a driving structure, a vibration structure, a material discharging structure, two fixing frames, two outer cylinders and two feeding structures; The feed tank is arranged on the plastic extrusion equipment, an opening is provided at the bottom of the feed tank, two fixing frames are fixed on the outer peripheral surface of the feed tank, a fixing plate is arranged above the feed tank, and one end of the two fixing frames away from the feed tank is fixedly connected to the two ends of the fixing plate respectively; The two outer cylinders are arranged above the feed tank, the tops of the two outer cylinders are open, and the bottoms of the two outer cylinders are provided with a drop opening; The two feeding structures are respectively arranged inside the two outer cylinders, and the two outer cylinders are provided with a pusher for vibrating the feeding structures; Wherein, the material guiding structure is arranged between the two outer cylinders and the feed tank; Wherein, the driving structure is arranged on one side of the fixed plate, and is used to drive the material guiding structure to rotate; The vibration structure is composed of an air supply part and an actuator, both of which are arranged on a fixed plate, and the actuator is used to drive the top moving part to operate; Among them, the discharge structure is arranged at the bottom of the feed tank to control the discharge; The feeding structure includes two fixed rings, an inner liner and two flexible connecting rings. The two flexible connecting rings are respectively fixed to the inner rings of the two fixed rings. The two ends of the inner liner are respectively connected to the two flexible connecting rings. A discharge port is provided at the bottom of the inner liner, and the discharge port is arranged opposite to the blanking port. The material guiding structure includes a material guiding seat, a material guiding channel and a rotating shaft. The material guiding seat is arranged directly above the material feeding tank. The material guiding channel is opened on the material guiding seat. Both ends of the material guiding channel extend to the top surface and the bottom surface of the material guiding seat respectively. The top opening of the material guiding channel is located at the edge of the top surface of the material guiding seat. The bottom opening of the material guiding channel is located at the center of the bottom surface of the material guiding seat and is arranged directly opposite to the material feeding tank. The rotating shaft is fixed at the center of the top surface of the material guiding seat. The end of the rotating shaft away from the material guiding seat is rotatably mounted on the fixed plate. The driving structure includes a connecting frame, a driving motor, a reciprocating screw rod and a moving seat. The connecting frame is fixed on two fixed frames, and the connecting frame has a U-shaped structure. The driving motor is installed on the connecting frame. One end of the reciprocating screw rod is fixedly connected to the output shaft of the driving motor, and the other end of the reciprocating screw rod is rotatably installed on the connecting frame. The moving seat is threadedly sleeved on the reciprocating screw rod. A guide rod is fixed on the connecting frame. The moving seat is slidingly sleeved on the guide rod. A rack is fixed on one side of the moving seat. A first gear is fixedly sleeved on the end of the rotating shaft away from the material guide seat, and the first gear is arranged opposite to the rack.

2. A plastic extruder for producing anaerobic biodegradable plastics according to claim 1, characterized in that: There is a gap between the inner surface of the inner container and the outer cylinder, and the bottom surface of the inner container and the inner bottom surface of the outer cylinder are fitted to each other.

3. A plastic extruder for producing anaerobic biodegradable plastics according to claim 1, characterized in that: The push member includes a push rod, a sleeve plate and a spring. An adapter port is provided on the outer surface of the outer cylinder. The push rod slides in the adapter port. One end of the push rod is located inside the outer cylinder and abuts against the inner tank. The other end of the push rod extends to the outside of the outer cylinder and is fixedly connected to the sleeve plate. One end of the spring is connected to the outer surface of the outer cylinder, and the other end of the spring is connected to the sleeve plate.

4. A plastic extruder for producing anaerobic biodegradable plastics according to claim 1, characterized in that: The actuator includes a follower plate, a telescopic member and an extrusion plate. The follower plate is fixedly sleeved on the rotating shaft. One end of the telescopic member is connected to the follower plate, and the other end of the telescopic member is connected to the extrusion plate. The extrusion plate is provided with an inclined extrusion surface. The telescopic member includes a first sealing cylinder, a first sliding rod and a first connecting spring. The first sealing cylinder is fixed to the bottom surface of the follower plate. The first sliding rod is sealingly and slidingly connected to the inside of the first sealing cylinder. The bottom end of the first sliding rod extends to the outside of the first sealing cylinder and is fixedly connected to the extrusion plate. One end of the first connecting spring is connected to the first sealing cylinder, and the other end is connected to the first sliding rod.

5. A plastic extruder for producing anaerobic biodegradable plastics according to claim 4, characterized in that: The air supply member includes a shaft, an eccentric wheel, an inflatable member and a connecting pipe. The shaft passes through a fixed plate and is rotatably mounted on the fixed plate. The eccentric wheel fixing sleeve is arranged at the top position of the shaft, and the eccentric wheel and the shaft are eccentrically arranged. The inflatable member is arranged on the top surface of the fixed plate, and the inflatable member is arranged opposite to the eccentric wheel. One end of the connecting pipe is connected to the inflatable member, and the other end is connected to the telescopic member. The bottom fixed sleeve of the shaft is provided with a second gear, and the second gear is arranged opposite to the rack. The inflatable part includes a second sealing cylinder, a second sliding rod and a second connecting spring. The second sealing cylinder is fixed on the top surface of the fixed plate. The second sliding rod is sealingly and slidingly connected to the inside of the second sealing cylinder. The bottom end of the second sliding rod extends to the outside of the second sealing cylinder and is arranged opposite to the eccentric wheel. One end of the second connecting spring is connected to the second sealing cylinder, and the other end is connected to the second sliding rod.

6. A plastic extruder for producing anaerobic biodegradable plastics according to claim 1, characterized in that: The discharge structure includes a discharge seat, a discharge valve plate and a discharge cylinder. The discharge seat is arranged between the feed tank and the plastic extrusion equipment. The discharge seat is a frame structure, and the discharge seat is arranged opposite to the opening at the bottom of the feed tank. The discharge valve plate is slidably installed on the discharge seat, the discharge cylinder is installed on the discharge seat, and the telescopic end of the discharge cylinder is fixedly connected to the discharge valve plate.

7. A plastic extruder for producing anaerobic biodegradable plastics according to claim 4, characterized in that: A material guide block with a triangular cross section is fixed on the top surface of the follower plate.

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