A highly stable twin-screw extruder facilitating material guiding

Abstract

The present invention discloses a highly stable twin-screw extruder facilitating material guiding, which includes a frame stably placed in a workshop. A driving motor is fixedly installed on the upper surface of the right side of the frame, and the output end of the driving motor is fixedly connected to a transmission box. A connecting seat is fixedly installed on the outer side of the transmission box, and an extrusion barrel is fixedly installed inside the connecting seat. It further includes: a feed pipe penetrating and fixed at the middle position of the connecting seat. The feed pipe is communicated with the left end position of the extrusion barrel, and a feed bin is installed at the upper end of the feed pipe in a lifting manner; a guiding piece is fixedly installed on the inner wall of the upper end of the feed bin to support and guide the stirring pipe. This highly stable twin-screw extruder facilitating material guiding can cool the area near the blanking port and preheat the raw materials with the recovered heat, effectively avoiding premature melting and blockage during the blanking process. At the same time, it can automatically dredge the materials, effectively improving the stability of material guiding.

Description

Technical Field

[0001] The present invention relates to the technical field of twin-screw extruders, and particularly to a highly stable twin-screw extruder facilitating material guiding. Background Art

[0002] A twin-screw extruder is a common plastic product processing device. It realizes the hot melting of plastic raw material particles through a barrel, and then conveys and extrudes the hot-melted material through symmetrically arranged twin screws, thus facilitating subsequent forming processing operations.

[0003] In the prior art, for example, a single-screw extruder with the publication number CN115366376A crushes the added raw materials into small particles by arranging a crushing mechanism in the feed hopper, fully mixes the added raw materials through a rotating stirring rod II, and at the same time, a rotating crushing knife crushes the raw materials inside the feed hopper. The crushed raw materials fall to the bottom of the feed hopper through a filter screen, so as to preheat and dry the raw materials in the machine body more fully, prevent the raw materials added into the machine body from still having moisture, improve the quality of plastic products extruded by the extruder, and help avoid the situation that the granular raw materials added into the feed hopper are of different sizes, resulting in incomplete preheating and drying of large granular raw materials. By arranging a feeding mechanism to add raw materials into the feed hopper, adding raw materials into the feeding hopper, and at the same time starting the motor, the motor drives the spiral shaft and the conveying blades to rotate, conveys the raw materials to the top of the conveying pipe, and then enters the feed hopper through a discharge pipe on one side of the top of the conveying pipe. The operation is convenient and fast, facilitating the staff to quickly add raw materials into the feed hopper through the feeding device, reducing the inconvenience of the staff adding raw materials, and improving the processing efficiency of the single-screw extruder. However, during its use, in order to improve the drying effect of the material by crushing, there is no cooling structure at the material discharge port, so that small particle materials will be pre-melted near the material port, which will further cause blockage of the material port and affect normal feeding, and there are certain defects in use. Summary of the Invention

[0004] The purpose of the present invention is to provide a highly stable twin-screw extruder facilitating material guiding, so as to solve the problem in the above background art that there is no cooling structure at the material discharge port of the twin-screw extruder in the current market, resulting in premature melting of small particle materials near the material port, further causing blockage of the material port and affecting normal feeding.

[0005] To achieve the above object, the present invention provides the following technical solution: a highly stable twin-screw extruder facilitating material guiding, including a frame stably placed in a workshop. A driving motor is fixedly installed on the upper surface of the right side of the frame, and the output end of the driving motor is fixedly connected to a transmission box. A connecting seat is fixedly installed on the outside of the transmission box, and an extrusion barrel is fixedly installed inside the connecting seat. Two screws are rotatably installed inside the extrusion barrel, and the two screws are drivingly connected to each other. The right end of one of the screws is fixedly connected to the output end of the transmission box;

[0006] It further includes: a feed pipe, which is fixedly installed through the middle position of the connecting seat. The feed pipe is communicated with the left end position of the extrusion barrel, and a feed bin is installed at the upper end of the feed pipe in a lifting manner;

[0007] A support plate is fixedly installed on the outside of the connecting seat. A blanking motor is fixedly installed at the upper end of the support plate, and an air delivery pipe is fixedly installed at the output end of the blanking motor. Blades are fixedly installed inside the lower end of the air delivery pipe. An activity plate is fixedly installed through the outside of the lower end of the air delivery pipe, and a first through hole is opened on the activity plate. A stirring pipe is fixedly installed on the outer side of the upper section of the air delivery pipe;

[0008] A partition plate is fixedly installed on the inner wall of the feed pipe, and a second through hole is opened on the partition plate;

[0009] A guiding piece is fixedly installed on the inner wall of the upper end of the feed bin to support and guide the stirring pipe.

[0010] Preferably, the lower end of the air delivery pipe is arranged in an outward-expanded shape, and there is a gap between the lower end of the air delivery pipe and the inner wall of the feed pipe. Blades are fixedly installed inside the lower end of the air delivery pipe.

[0011] By adopting the above technical solution, when the blanking motor drives the air delivery pipe to rotate, the blades can rotate synchronously, generating suction at the lower end of the air delivery pipe, thereby promoting the flow of air inside the feed pipe, achieving cooling, and avoiding blockage caused by premature melting of the material before it enters the extrusion barrel.

[0012] Preferably, stirring pipes are axially arranged at equal angles on the outer side of the air delivery pipe. The stirring pipes are communicated with the air delivery pipe, and exhaust holes are evenly opened on the stirring pipes.

[0013] By adopting the above technical solution, the hot air inhaled into the air delivery pipe can enter the stirring pipes and be evenly discharged into the material through the exhaust holes on the stirring pipes, thereby realizing preheating of the material and heat recovery.

[0014] Preferably, the activity plate fits against the partition plate, and the positions and numbers of the first through hole and the second through hole correspond to each other.

[0015] By adopting the above technical solution, when the gas transmission pipe drives the movable plate to rotate, the first through hole on the movable plate and the second through hole on the partition plate can intermittently overlap and stagger up and down, so that the materials in the feed pipe can intermittently fall into the extrusion barrel, avoiding blockage caused by the accumulation and melting of materials.

[0016] Preferably, the outer diameter of the lower end of the silo is smaller than the outer diameter of the upper end of the feed pipe, and a spring is connected between the lower end of the silo and the inner wall of the feed pipe, and the silo and the feed pipe form an elastic lifting structure through the spring.

[0017] By adopting the above technical solution, the silo can perform a lifting movement during the feeding process, keeping the materials loose, so as to promote the discharge of the materials inside.

[0018] Preferably, the guiding pieces are evenly arranged on the inner wall of the silo, the upper surface of the guiding piece is arranged in a shoe surface shape, the guiding piece is integrally spiral, and the upper surface of the guiding piece fits the end of the stirring pipe.

[0019] By adopting the above technical solution, when the gas transmission pipe drives the stirring pipe to rotate, the end of the stirring pipe can intermittently slide along the upper surface of the guiding piece, so as to push the silo to perform elastic jitter through the guiding piece, thereby promoting the material guiding and discharging of the silo.

[0020] Preferably, the diameter of the spring body of the spring is smaller than the diameter of the raw material particles, and the spring fits the inner wall of the feed pipe.

[0021] By adopting the above technical solution, when the spring is compressed, the particles entering between its spring bodies can be extruded, making the particles move towards the center of the feed pipe, so that the materials in the feed pipe are pressed to move up and down, thereby realizing the dredging and discharging of the materials.

[0022] Preferably, a dredging rod is fixedly installed inside the spring, four dredging rods are circumferentially arranged at equal angles, and the upper ends of the dredging rods are arranged vertically.

[0023] By adopting the above technical solution, when the spring is compressed and reset, the dredging rod inside it can be driven to perform lifting adjustment, so as to push the blocked materials and realize the automatic dredging of the materials.

[0024] Preferably, guiding pieces are symmetrically arranged on the outer side of the lower end of the silo, and the guiding pieces and the grooves opened on the inner wall of the upper end of the feed pipe form a limit sliding structure.

[0025] By adopting the above technical solution, when the gas transmission pipe rotates, it is avoided that the silo is driven to rotate synchronously through the stirring pipe, ensuring the smooth lifting adjustment of the silo.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: The highly stable twin-screw extruder facilitating material guiding can cool the area near the material dropping port and preheat the raw materials with the recovered heat, effectively avoiding premature melting and blockage during the material dropping process. At the same time, it can automatically dredge the materials, effectively improving the stability of material guiding. The specific content is as follows;

[0027] 1. An air delivery pipe, a movable plate, and a partition are provided. When the air delivery pipe is driven to rotate, it can drive the movable plate on the outer side of the lower end to rotate synchronously. At this time, the first through hole on the movable plate will intermittently move above the second through hole, enabling the two to be intermittently connected, and thus enabling the materials in the bin to intermittently fall into the feed pipe, realizing intermittent feeding and avoiding blockage and stay of the materials at the lowermost end of the feed pipe;

[0028] 2. An air delivery pipe, blades, and a stirring pipe are provided. When the air delivery pipe rotates, it can drive the stirring pipe outside it to fully stir the materials. At the same time, when the air delivery pipe rotates, it will drive the blades on the inner side of the lower end to rotate synchronously, enabling the air delivery pipe to suck the hot air at the lower end of the feed pipe and evenly blow it onto the materials through the exhaust holes of the stirring pipe, thereby realizing uniform preheating of the materials. At the same time, it avoids premature melting and blockage of the materials due to excessive temperature at the lower end of the feed pipe. At the same time, it can change the air pressure at the feed pipe, sucking out the residual gas in the extrusion barrel and improving the extrusion effect;

[0029] 3. A bin, a guide block, a spring, and a dredging rod are provided. When the air delivery pipe drives the stirring pipe to rotate, the end of the stirring pipe can intermittently slide on the upper surface of the guide block, thereby pushing the bin and the feed pipe to expand and contract and adjust, realizing vibration of the materials and promoting material feeding. At the same time, during the compression process of the spring, it will extrude and convey the materials and cooperate with the dredging rod for dredging, effectively avoiding blockage during the material guiding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic three-dimensional structure diagram of the present invention;

[0031] Figure 2 is a schematic installation structure diagram of the bin of the present invention;

[0032] Figure 3 is a schematic three-dimensional structure diagram of the bin of the present invention;

[0033] Figure 4 is a schematic three-dimensional sectional structure diagram of the bin of the present invention;

[0034] Figure 5 is a schematic installation structure diagram of the movable plate of the present invention;

[0035] Figure 6 is a schematic three-dimensional structure diagram of the spring and the dredging rod of the present invention;

[0036] Figure 7 Schematic diagram of the three-dimensional structure of the movable plate and the partition plate of the present invention;

[0037] Figure 8 Schematic diagram of the blade mounting structure of the present invention;

[0038] Figure 9 For the present invention Figure 3 Enlarged structure schematic diagram at position A in the present invention.

[0039] In the figure: 1, frame; 2, drive motor; 3, transmission box; 4, connecting seat; 5, extrusion barrel; 6, screw; 7, feed pipe; 8, storage bin; 9, support plate; 10, blanking motor; 11, gas transmission pipe; 12, blade; 13, movable plate; 14, first through hole; 15, partition plate; 16, second through hole; 17, stirring pipe; 18, exhaust hole; 19, guide piece; 20, guide block; 21, spring; 22, dredging rod. Specific embodiments

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] Please refer to Figures 1-9 , the present invention provides a technical solution: a highly stable twin-screw extruder facilitating material guiding, including a frame 1 stably placed in a workshop, a drive motor 2 fixedly installed on the upper surface of the right side of the frame 1, and an output end of the drive motor 2 fixedly connected to a transmission box 3, and a connecting seat 4 fixedly installed on the outer side of the transmission box 3, and an extrusion barrel 5 fixedly installed inside the connecting seat 4, and two screws 6 rotatably installed inside the extrusion barrel 5, and the two screws 6 are mutually driven and connected, and the right end of one of the screws 6 is fixedly connected to the output end of the transmission box 3;

[0042] It further includes: a feed pipe 7, penetrating and fixed at the middle position of the connecting seat 4, the feed pipe 7 is communicated with the left end position of the extrusion barrel 5, and a storage bin 8 is installed at the upper end of the feed pipe 7 in a lifting manner;

[0043] A support plate 9, fixedly installed on the outer side of the connecting seat 4, a blanking motor 10 fixedly installed on the upper end of the support plate 9, an output end of the blanking motor 10 fixedly installed with a gas transmission pipe 11, and a blade 12 fixedly installed inside the lower end of the gas transmission pipe 11, and the outer side of the lower end of the gas transmission pipe 11 penetrates and is fixedly installed with a movable plate 13, and a first through hole 14 is opened on the movable plate 13, and a stirring pipe 17 is fixedly installed on the outer side of the upper section of the gas transmission pipe 11;

[0044] The partition plate 15 is fixedly installed on the inner wall of the feed pipe 7, and a second through hole 16 is formed in the partition plate 15; the lower end of the air delivery pipe 11 is arranged in an outward-expanded shape, and there is a gap between the lower end of the air delivery pipe 11 and the inner wall of the feed pipe 7, and a blade 12 is fixedly installed on the inner side of the lower end of the air delivery pipe 11. Stirring pipes 17 are axially arranged at equal angles on the outer side of the air delivery pipe 11, and the stirring pipes 17 are communicated with the air delivery pipe 11, and exhaust holes 18 are uniformly formed in the stirring pipes 17. The movable plate 13 is attached to the partition plate 15, and the positions and numbers of the first through hole 14 and the second through hole 16 correspond to each other;

[0045] As Figures 1-5 and Figures 7-8 shown, when the machine needs to be used, the raw materials are poured into the bin 8, and at the same time, the driving motor 2 and the feeding motor 10 are started. At this time, the feeding motor 10 drives the air delivery pipe 11 to rotate synchronously. At this time, the blade 12 on the inner side of the lower end of the air delivery pipe 11 rotates simultaneously, so as to realize the suction of the hot air at the feed pipe 7 and blow it to the material through the exhaust holes 18 of the stirring pipes 17, so as to fully stir and preheat the material. At the same time, the air delivery pipe 11 drives the movable plate 13 to rotate synchronously, so that the first through hole 14 on the movable plate 13 intermittently moves above the second through hole 16, realizing the coincidence and communication of the first through hole 14 and the second through hole 16. At this time, the bin 8 can intermittently discharge materials, avoiding the material staying at the lower end of the feed pipe 7 and being blocked due to premature melting;

[0046] The guiding piece 19 is fixedly installed on the inner wall of the upper end of the bin 8 to realize the support and guidance of the stirring pipe 17. The outer diameter of the lower end of the bin 8 is smaller than the outer diameter of the upper end of the feed pipe 7, and a spring 21 is connected between the lower end of the bin 8 and the inner wall of the feed pipe 7. And the bin 8 and the feed pipe 7 form an elastic lifting structure through the spring 21. The guiding pieces 19 are uniformly arranged on the inner wall of the bin 8, and the upper surface of the guiding piece 19 is arranged in a shoe surface shape, and the guiding piece 19 is integrally spiral. At the same time, the upper surface of the guiding piece 19 is attached to the end of the stirring pipe 17. The guiding pieces 19 are symmetrically arranged on the outer side of the lower end of the bin 8, and the guiding piece 19 and the groove formed on the inner wall of the upper end of the feed pipe 7 form a limit sliding structure.

[0047] As Figures 2-5 and Figure 9 shown, with the rotation of the air delivery pipe 11, it drives the stirring pipe 17 to rotate synchronously, so that the end of the stirring pipe 17 intermittently slides on the upper surface of the guide block 20, thereby pushing the bin 8 and the feed pipe 7 to perform telescopic adjustment through the guide block 20, so that the bin 8 fluctuates and vibrates under the elastic force of the spring 21, so as to loosen the material and ensure that the material can fall smoothly.

[0048] The spring body diameter of the spring 21 is smaller than the diameter of the raw material particles, and the spring 21 is attached to the inner wall of the feed pipe 7. A dredging rod 22 is fixedly installed inside the spring 21, and four dredging rods 22 are circumferentially arranged at equal angles. The upper end of the dredging rod 22 is arranged vertically. As Figures 3-6 shown, with the lifting and vibration of the bin 8, the spring 21 is reciprocally compressed and stretched. When the spring body of the spring 21 is compressed and approaches, it will extrude and push the materials in its gap, so that the materials at the feed pipe 7 are pushed upward or downward under pressure, realizing the automatic conveying of the materials. At the same time, the spring 21 will drive the dredging rod 22 to adjust up and down, so that the dredging rod 22 dredges the blocked materials, further improving the convenience of material guiding.

[0049] Working principle: When using this highly stable double-screw extruder facilitating material guiding, first, as Figures 1-9 shown, pour the materials into the bin 8, and then start the driving motor 2 and the feeding motor 10. At this time, the stirring pipe 17 can fully stir the raw materials, and the air delivery pipe 11 can extract the hot air inside the feed pipe 7 and blow it to the materials through the exhaust holes 18, realizing the effective preheating of the materials, while avoiding the premature melting of the materials due to the too high temperature inside the feed pipe 7, and at the same time reducing the bubbles in the molten materials. During the rotation of the stirring pipe 17, it will drive the movable plate 13 to rotate synchronously, and then cooperate with the partition plate 15 for intermittent feeding. During the rotation of the stirring pipe 17, it will intermittently push the guide block 20 and the bin 8 to elastically lift and lower, and then cooperate with the spring 21 and the dredging rod 22 to dredge the materials, ensuring the smooth discharge of the materials, thus completing a series of operations.

[0050] The content not detailed in this specification belongs to the prior art well-known to those skilled in the art.

[0051] In the description of the present invention, unless otherwise stated, "a plurality of" means two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0052] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A highly stable twin-screw extruder facilitating material guiding, comprising a frame (1) stably placed in a workshop. On the upper surface of the right side of the frame (1), a driving motor (2) is fixedly installed. The output end of the driving motor (2) is fixedly connected to a transmission box (3). A connecting seat (4) is fixedly installed on the outer side of the transmission box (3). An extrusion barrel (5) is fixedly installed inside the connecting seat (4). Two screws (6) are rotatably installed inside the extrusion barrel (5). The two screws (6) are drivingly connected to each other. The right end of one of the screws (6) is fixedly connected to the output end of the transmission box (3). Characterized in that, It further includes: A feed pipe (7) is fixedly installed through the middle position of the connecting seat (4). The feed pipe (7) is communicated with the left end position of the extrusion barrel (5). A feed bin (8) is installed at the upper end of the feed pipe (7) in a lifting manner. The outer diameter of the lower end of the feed bin (8) is smaller than the outer diameter of the upper end of the feed pipe (7). A spring (21) is connected between the lower end of the feed bin (8) and the inner wall of the feed pipe (7). The feed bin (8) and the feed pipe (7) form an elastic lifting structure through the spring (21). A dredging rod (22) is fixedly installed inside the spring (21). Four dredging rods (22) are circumferentially arranged at equal angles. The upper ends of the dredging rods (22) are arranged vertically. A support plate (9) is fixedly installed on the outer side of the connecting seat (4). A feeding motor (10) is fixedly installed at the upper end of the support plate (9). The output end of the feeding motor (10) is fixedly installed with an air delivery pipe (11). A blade (12) is fixedly installed inside the lower end of the air delivery pipe (11). An activity plate (13) is fixedly installed through the outer side of the lower end of the air delivery pipe (11). A first through hole (14) is opened on the activity plate (13). A stirring pipe (17) is fixedly installed on the outer side of the upper section of the air delivery pipe (11). The lower end of the air delivery pipe (11) is arranged in an outward-expanded shape. There is a gap between the lower end of the air delivery pipe (11) and the inner wall of the feed pipe (7). A blade (12) is fixedly installed inside the lower end of the air delivery pipe (11). A partition plate (15) is fixedly installed on the inner wall of the feed pipe (7). A second through hole (16) is opened on the partition plate (15). A guiding piece (19) is fixedly installed on the inner wall of the upper end of the feed bin (8) to support and guide the stirring pipe (17). The guiding pieces (19) are evenly arranged on the inner wall of the feed bin (8). The upper surface of the guiding piece (19) is arranged in an inclined plane. The guiding piece (19) is integrally spiral. The upper surface of the guiding piece (19) is attached to the end of the stirring pipe (17).

2. The high-stability twin-screw extruder facilitating material guiding according to claim 1, wherein: Stirring pipes (17) are axially arranged at equal angles on the outer side of the air delivery pipe (11). The stirring pipes (17) are communicated with the air delivery pipe (11). Exhaust holes (18) are evenly opened on the stirring pipes (17).

3. A highly stable twin-screw extruder facilitating material guiding according to claim 1, characterized in that: The movable plate (13) is attached to the partition plate (15), and the positions of the first through hole (14) and the second through hole (16) correspond to each other and the numbers are the same.

4. A highly stable twin-screw extruder facilitating material guiding according to claim 1, characterized in that: The diameter of the spring body of the spring (21) is smaller than the diameter of the raw material particles, and the spring (21) is attached to the inner wall of the feed pipe (7).

5. A highly stable twin-screw extruder facilitating material guiding according to claim 1, characterized in that: Guide pieces (19) are symmetrically arranged on the outer side of the lower end of the silo (8), and the guide pieces (19) and the groove formed in the inner wall of the upper end of the feed pipe (7) form a limiting sliding structure.

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