A waste recovery mechanism of a bag-in-box production equipment

Abstract

This invention belongs to the technical field of plastic waste recycling, specifically relating to a waste recycling mechanism for FIBC (Flexible Intermediate Bulk Container) production equipment. The mechanism includes a waste recycling machine comprising a support, a material chamber, a discharge port, an output shaft, a crushing shaft, and a fixed shaft. The material chamber is mounted on the support, and the discharge port communicates with it. The output shaft is connected to an external drive mechanism. The crushing shaft is slidably connected to the output shaft via a key block and a keyway. This invention utilizes a ball bearing and a V-groove combination to enable the crushing shaft to drive the blades to rotate at high speed while simultaneously achieving axial reciprocating oscillation. Combined with a tension spring buffer adjustment and automatic lubrication structure, it effectively prevents waste accumulation and jamming, allowing for more thorough crushing. The blade oscillation intensity can be flexibly adjusted, improving crushing efficiency and equipment operation smoothness. Through crushing, washing, melting, and pelletizing processes, the waste is transformed into recycled material, realizing the recycling and reuse of FIBC waste. The overall structure is simple, low-cost, and easy to maintain, making it suitable for large-scale recycling and processing of FIBC production waste.

Description

Technical Field

[0001] This invention belongs to the technical field of plastic waste recycling, specifically relating to a waste recycling mechanism for container bag production equipment. Background Technology

[0002] FIBCs (Flexible Intermediate Bulk Containers), as flexible transport packaging containers, are widely used in the transportation of powdery and granular materials in industries such as chemicals, building materials, and food. Their production process generates a large amount of plastic scraps, waste semi-finished products, and used FIBCs. Directly discarding this plastic waste not only wastes resources but also causes environmental pollution. Therefore, recycling and reprocessing FIBC production waste into recycled plastic granules for reuse in FIBC production is a crucial step in achieving plastic resource recycling, reducing enterprise production costs, and practicing green production principles.

[0003] Currently, the recycling of plastic waste from FIBCs mainly adopts physical recycling processes, which include preliminary sorting of waste materials, crushing and pulverizing, washing and drying, melt extrusion, pelletizing and packaging. Among these, crushing and pulverizing is the core process, which directly determines the quality of the subsequent recycled materials and the overall recycling efficiency. Existing plastic waste crushing equipment mostly adopts a structure of fixed blades and a rotating crushing shaft. While the high-speed rotation of the blades shears and crushes the waste, achieving basic crushing functionality, it suffers from several technical defects in practical applications: First, the crushing shaft and blades are mostly fixedly installed, with the blades only rotating in a circular motion and unable to generate axial oscillation. Waste tends to accumulate in the material chamber, resulting in incomplete crushing and the production of large, uncrushed pieces or long strips of waste requiring secondary crushing, thus reducing overall recycling efficiency. Second, uneven axial force during the high-speed rotation of the crushing shaft easily leads to jamming and accelerated wear, especially when processing tough plastic waste such as FIBCs (Flexible Intermediate Bulk Containers), where jamming is more frequent, resulting in a high equipment failure rate and increased maintenance costs. Third, the blade oscillation amplitude and crushing force cannot be flexibly adjusted according to the waste material and thickness, resulting in poor adaptability and difficulty in meeting the crushing requirements of FIBC waste of different sizes. Fourth, the connection between the crushing shaft and the drive shaft operates at high speed for extended periods without an automatic lubrication structure, leading to high frictional resistance, easy component wear, and shortened equipment lifespan.

[0004] Existing related patent technologies have also failed to effectively solve the above problems, for example: Prior art document 1 (CN113954271B) discloses a plastic recycling device for the resource recycling industry. This device crushes plastics through a rotary crushing mechanism combined with a gas extrusion mechanism. It uses a rotating crushing rod and a swinging elastic rod to crush the plastics, while airflow cooling prevents the plastics from softening and adhering. However, the crushing components of this device only rotate and lack an axial swinging structure. The waste cannot move in position within the crushing chamber, resulting in poor crushing effect for tough plastic waste such as FIBCs (Flexible Intermediate Bulk Containers). Problems such as entanglement and uneven crushing are likely to occur. Furthermore, the crushing force cannot be adjusted, making it difficult to guarantee the smooth operation and crushing efficiency of the equipment. Prior art document 2 (CN103862592A) discloses a plastic crushing device that uses a motor to drive the crushing roller to rotate, and works in conjunction with a fixed blade holder to achieve plastic shearing and crushing. A hydraulic cylinder adjusts the feeding component to adapt to different sizes of waste materials. This device also suffers from the problem of the crushing roller and blades being fixedly set up. The blades can only perform circumferential cutting motion and lack axial reciprocating oscillation function, making it easy for waste to accumulate locally and resulting in incomplete crushing. Furthermore, the connection between the crushing shaft and the fixed shaft lacks a buffer and axial force adjustment structure, making it prone to jamming at high speeds. It also lacks an automatic lubrication mechanism, leading to severe wear of components over long-term use. Therefore, it cannot meet the needs of continuous and efficient crushing and recycling of waste materials from bulk bags.

[0005] In summary, existing waste recycling and crushing equipment and related technologies for FIBC production generally suffer from problems such as insufficient crushing, low efficiency, easy equipment jamming, poor adjustability, and short service life. These issues make it difficult to meet the needs of the FIBC industry for large-scale, efficient, and intelligent waste recycling and reuse. Therefore, developing a waste recycling mechanism for FIBC production equipment with good crushing effect, smooth operation, strong adjustability, and high degree of automation has become an urgent technical problem to be solved in this field. Summary of the Invention

[0006] The purpose of this invention is to provide a waste recycling mechanism for container bag production equipment to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a waste recycling mechanism for container bag production equipment, including a waste recycling machine, the waste recycling machine being used for recycling and reusing plastic waste, the waste recycling machine including a support, a material chamber, a discharge port, an output shaft, a crushing shaft, and a fixed shaft; the material chamber is fixedly installed on the support, the discharge port is located below the support and fixedly connected to the material chamber, the output shaft bearing is installed on the upper left side of the support and fixedly connected to the output end of an external drive mechanism, the fixed shaft is fixedly installed on the upper right side of the support, the output shaft is connected to the fixed shaft through the crushing shaft, the outer sides of both the crushing shaft and the output shaft are integrally formed with key blocks, and the crushing shaft is fitted with several blades through the key blocks, the middle of the crushing shaft is through-hole, and a keyway is provided on the left inner wall, and is slidably connected to the key block of the output shaft through the keyway, the left end of the fixed shaft is inserted into the crushing shaft.

[0008] The present invention further explains that the production process of the container bag production equipment includes plastic waste collection and preliminary sorting, crushing and pulverizing, deep cleaning, dehydration and drying, melt extrusion and strong filtration, strip forming, cooling, pelletizing, screening and packaging, quality inspection, and the use of recycled materials to produce new container bags.

[0009] The present invention further describes that two V-shaped grooves are provided on the outer side of the left end of the fixed shaft, and the two V-shaped grooves are symmetrically arranged. A groove is provided on the inner wall of the crushing shaft, and a ball is rolled in the groove. The ball is rolled in the two V-shaped grooves, and the two V-shaped grooves are interconnected.

[0010] The present invention further explains that the fixed shaft is divided into left and right parts along the middle of the V-groove, namely, a left shaft and a right shaft. The right shaft has a countersunk hole inside, and a shaft rod is slidably connected inside the countersunk hole. The left end of the shaft rod is integrally formed with the right side of the left shaft. A screw rod is connected to the inner wall of the right side of the right shaft. A connecting block is rotatably connected to the left end of the screw rod, and the connecting block is slidably connected inside the countersunk hole.

[0011] The present invention further illustrates that a tension spring is connected between the left end of the connecting block and the right end of the shaft.

[0012] The present invention further illustrates that the right end of the screw is integrally formed with a turntable, and the screw is threadedly connected to the countersunk hole.

[0013] The present invention further illustrates that an impact plate is integrally formed on the left side of the left shaft.

[0014] The present invention further illustrates that a sponge is attached to the right end of the output shaft, and the impact plate contacts the sponge after moving to the left. Lubricating oil is injected into the interior of the sponge.

[0015] Compared with the prior art, the beneficial effects achieved by this invention are as follows: This invention recycles plastic waste, removes large foreign objects such as metal, wood, and mud, sorts them manually / mechanically, crushes and pulverizes them through a waste recycling machine, cuts them into 3-8mm fragments / strips, removes residual labels, stitching, inner film, etc., then performs deep cleaning, dehydration and drying, melt extrusion and strong filtration, extrudes continuous strips through a mold, then cools and shapes them in a water tank, and finally cuts them into 2-3mm cylindrical particles by a pelletizer, then screens and packages them, vibrating screens remove particles of different lengths, weighs and packages them, and after quality inspection, generates recycled material, which is used to produce new container bags, thus achieving the purpose of waste recycling and reuse. When crushing and pulverizing plastic waste through a waste recycling machine, the external drive mechanism drives the output shaft to rotate. The output shaft drives the crushing shaft to rotate through the key block and keyway, thereby driving the blades to rotate at high speed to crush and pulverize the plastic waste. The automated operation has high recycling efficiency, which greatly improves production efficiency. At the same time, the blades can swing left and right when cutting and crushing plastic waste, which makes the plastic waste sway left and right, greatly improving cutting efficiency and crushing more thoroughly. When the balls roll within the V-groove, they generate axial force, which pulls the left shaft, causing it to separate from the right shaft. This increases the clearance of the V-groove, making the balls roll more smoothly and preventing jamming during high-speed crushing. At the same time, when the left shaft is under force, it ensures that the left shaft moves only slightly to avoid excessive movement that would increase the clearance of the V-groove and affect the application of axial force. This also prevents the blades from wobbling too much, which would reduce crushing efficiency. The axial force application is more stable, ensuring both the strength of the blades' wobbling and the smoothness of operation. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the waste recycling machine of the present invention; Figure 2 This is a schematic diagram of the blade mounting position in this invention; Figure 3 This is a schematic diagram of the present invention; Figure 4 This is a schematic diagram showing the connection relationship between the output shaft, the crushing shaft, and the fixed shaft of the present invention. Figure 5 This is a schematic diagram of the internal structure of the crusher shaft of the present invention; Figure 6 This is a cross-sectional view of the output shaft, crushing shaft, and fixing shaft of the present invention; Figure 7 This is an exploded view of the output shaft, crushing shaft, and fixed shaft of the present invention; Figure 8 This is a schematic diagram of the internal structure of the fixed shaft of the present invention; In the diagram: 1. Support; 2. Material chamber; 3. Feed port; 4. Output shaft; 41. Keyway; 42. Sponge body; 5. Crushing shaft; 51. Ball bearing; 6. Left shaft; 61. V-groove; 62. Impact plate; 7. Key block; 8. Blade; 9. Right shaft; 91. Shaft; 92. Screw; 93. Connecting block; 94. Tension spring; 95. Turntable. Detailed Implementation

[0017] The following detailed, non-limiting description of the technical solution of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-8 The present invention provides a technical solution: a waste recycling mechanism for container bag production equipment, including a waste recycling machine, which is used for recycling and reusing plastic waste. The waste recycling machine includes a support 1, a material chamber 2, a discharge port 3, an output shaft 4, a crushing shaft 5, and a fixed shaft. The material chamber 2 is fixedly installed on the bracket 1. The discharge port 3 is located below the bracket 1 and is fixed to the material chamber 2. The output shaft 4 bearing is installed on the upper left side of the bracket 1 and is fixedly connected to the output end of the external drive mechanism. The fixed shaft is fixedly installed on the upper right side of the bracket 1. The output shaft 4 is connected to the fixed shaft through the crushing shaft 5. The outer sides of both the crushing shaft 5 and the output shaft 4 are integrally formed with key blocks 7. Several blades 8 are sleeved on the crushing shaft 5 through the key blocks 7. The middle of the crushing shaft 5 is through-hole, and a keyway 41 is provided on the left inner wall. The keyway 41 is slidably connected to the key block 7 of the output shaft 4. The left end of the fixed shaft is inserted into the crushing shaft 5. Plastic waste is recycled, removing large foreign objects such as metal, wood, and sand. The waste is then sorted manually or mechanically, crushed and pulverized by a waste recycling machine, and cut into 3-8mm fragments / strips. Residual labels, stitching, and inner membranes are removed. After deep cleaning, dehydration and drying, the waste undergoes melt extrusion and strong filtration, extruding continuous strips through a die. These strips are then water-cooled and shaped, and finally pelletized into 2-3mm cylindrical particles. The particles are then screened and packaged, with a vibrating screen removing particles of varying lengths. After weighing and packaging, the waste is inspected to produce recycled material, which is then used to produce new container bags, achieving the goal of waste recycling and reuse. When the waste recycling machine crushes and pulverizes plastic waste, the external drive mechanism drives the output shaft 4 to rotate. The output shaft 4 drives the crushing shaft 5 to rotate through the key block 7 and keyway 41, thereby driving the blade 8 to rotate at high speed to crush and pulverize the plastic waste. The automated operation has high recycling efficiency, which greatly improves production efficiency.

[0019] The production process of FIBC (Flexible Intermediate Bulk Container) production equipment includes plastic waste collection and preliminary sorting, crushing and pulverizing, deep cleaning, dehydration and drying, melt extrusion and strong filtration, strip forming, cooling, pelletizing, screening and packaging, quality inspection, and the use of recycled materials to produce new FIBCs.

[0020] Two V-grooves 61 are provided on the outer side of the left end of the fixed shaft, and the two V-grooves 61 are symmetrically arranged. A groove is provided on the inner wall of the crushing shaft 5, and a ball bearing 51 is rolled in the groove. The ball bearing 51 is rolled in the two V-grooves 61, and the two V-grooves 61 are interconnected. When the output shaft 4 drives the crushing shaft 5 to rotate, the crushing shaft 5 synchronously drives the ball bearing 51 to rotate around its center, causing the ball bearing 51 to roll in the V-groove 61. During the rolling process, an axial force is generated, and the ball bearing 51 is fixed by the fixed shaft, causing the crushing shaft 5 to be pulled to the right, thereby driving the blade 8 to move to the right. When it moves to the right end of the V-groove 61, it enters the upper part of the V-groove 61. The axial force causes the crushing shaft 5 to move to the left and reset, thereby driving the blade 8 to reset. This allows the blade 8 to swing left and right when cutting and crushing plastic waste, which makes the plastic waste sway left and right, greatly improving the cutting efficiency and making the crushing more thorough.

[0021] The fixed shaft is divided into left and right parts along the middle of the V-groove 61, namely, the left shaft 6 and the right shaft 9. The right shaft 9 has a countersunk hole inside, and a shaft 91 is slidably connected inside the countersunk hole. The left end of the shaft 91 is integrally formed with the right side of the left shaft 6. A screw 92 is connected to the inner wall of the right side of the right shaft 9. A connecting block 93 is rotatably connected to the left end of the screw 92, and the connecting block 93 is slidably connected inside the countersunk hole.

[0022] A tension spring 94 is connected between the left end of the connecting block 93 and the right end of the shaft 91; When the ball 51 rolls in the V-groove 61, it generates an axial force, which pulls the left shaft 6 to bear the force, causing the left side 6 to separate from the right shaft 9, thereby increasing the clearance of the V-groove 61, making the ball 51 roll more smoothly, and avoiding jamming during high-speed crushing. Simultaneously, when the left shaft 6 is under force, the pull rod 91 slides in the countersunk hole, thereby deforming the tension spring 94, making the tension spring 94 longer, and generating a reaction force. This ensures that the left shaft 6 moves only a small amplitude, so as to avoid the large gap of the V-groove 61 due to excessive movement, which would affect the application of axial force and prevent the blade 8 from swaying left and right, which would reduce the crushing efficiency. The application of axial force is more stable, which can ensure both the strength of the blade 8 swaying left and right and the smoothness of the operation.

[0023] The right end of the screw 92 is integrally formed with a turntable 95, and the screw 92 is threaded into the countersunk hole; The operator rotates the turntable 95, causing the screw 92 to move left and right via threaded transmission. Simultaneously, by rotating the connecting block 93, the operator prevents the connecting block 93 from damaging the tension spring 94. This movement of the connecting block 93 changes the force on the right end of the tension spring 94, adjusting the separation degree between the left shaft 6 and the right shaft 9 when the ball bearing 51 applies axial force to the V-groove 61. This effectively controls the stability of the applied axial force. Furthermore, by adjusting the position of the connecting block 93, the operator adjusts the tension of the tension spring 94, allowing the ball bearing 51 to roll above the V-groove 61 and reset, thus adjusting the wobbling intensity. The operation is simple. Furthermore, the entire waste recycling machine has a simple structure, low manufacturing cost, and is relatively easy to disassemble, making it convenient for operators to maintain and repair.

[0024] The left side of the left shaft 6 has an integrally formed impact plate 62; When the position of the connecting block 93 is adjusted by rotating the turntable 95, thereby adjusting the tension of the tension spring 94, the tension of the connecting block 93 on the right end of the tension spring 94 decreases. This causes the ball 51 to roll in the V-groove 61 and generate axial force, which increases the amplitude of the left shaft 6 moving to the left. This causes the impact plate 62 to move to the left. Afterward, the ball 51 rolls above the V-groove 61, increasing the strength of the reset. This allows for rapid reset, improves the strength of the wobbling blade 8, further enhances the strength when wobbling plastic waste, further increases the crushing effect, and significantly improves production efficiency.

[0025] A sponge 42 is attached to the right end of the output shaft 4. After the impact plate 62 moves to the left, it comes into contact with the sponge 42. Lubricating oil is injected into the inside of the sponge 42. At the same time, as the impact plate 62 moves to the left, the squeezing force on the sponge 42 increases, causing it to deform and squeeze out the lubricating oil stored inside, which then flows into the keyway 41. This greatly improves the smoothness of the left and right movement of the crushing shaft 5, and also ensures smooth operation for high-speed rotating crushing.

[0026] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features, and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A waste recycling mechanism for container bag production equipment, comprising a waste recycling machine, characterized in that: The waste recycling machine is used for recycling and reusing plastic waste. The waste recycling machine includes a support (1), a material chamber (2), a discharge port (3), an output shaft (4), a crushing shaft (5), and a fixed shaft. The material chamber (2) is fixedly installed on the bracket (1). The discharge port (3) is located below the bracket (1) and is fixed to the material chamber (2). The output shaft (4) bearing is installed on the upper left side of the bracket (1) and is fixedly connected to the output end of the external drive mechanism. The fixed shaft is fixedly installed on the upper right side of the bracket (1). The output shaft (4) is connected to the fixed shaft through the crushing shaft (5). The outer sides of the crushing shaft (5) and the output shaft (4) are integrally formed with key blocks (7). The crushing shaft (5) is sleeved with several blades (8) through the key blocks (7). The middle of the crushing shaft (5) is through-hole, and the left inner wall is provided with a keyway (41). The keyway (41) is slidably connected to the key block (7) of the output shaft (4). The left end of the fixed shaft is inserted into the crushing shaft (5).

2. The waste recycling mechanism for container bag production equipment according to claim 1, characterized in that: The production process of the container bag production equipment includes plastic waste collection and preliminary sorting, crushing and pulverizing, deep cleaning, dehydration and drying, melt extrusion and strong filtration, strip forming, cooling, pelletizing, screening and packaging, quality inspection, and the use of recycled materials to produce new container bags.

3. The waste recycling mechanism for container bag production equipment according to claim 2, characterized in that: Two V-shaped grooves (61) are provided on the outer side of the left end of the fixed shaft, and the two V-shaped grooves (61) are symmetrically arranged. A groove is provided on the inner wall of the crushing shaft (5), and a ball (51) is rolled in the groove. The ball (51) is rolled in the two V-shaped grooves (61), and the two V-shaped grooves (61) are interconnected.

4. The waste recycling mechanism for container bag production equipment according to claim 3, characterized in that: The fixed shaft is divided into left and right parts along the middle of the V-groove (61), namely, the left shaft (6) and the right shaft (9). The right shaft (9) has a countersunk hole inside, and a shaft (91) is slidably connected inside the countersunk hole. The left end of the shaft (91) is integrally formed with the right side of the left shaft (6). A screw (92) is connected to the inner wall of the right side of the right shaft (9). A connecting block (93) is rotatably connected to the left end of the screw (92), and the connecting block (93) is slidably connected inside the countersunk hole.

5. The waste recycling mechanism for container bag production equipment according to claim 4, characterized in that: A tension spring (94) is connected between the left end of the connecting block (93) and the right end of the shaft (91).

6. The waste recycling mechanism for container bag production equipment according to claim 5, characterized in that: The right end of the screw (92) is integrally formed with a turntable (95), and the screw (92) is threaded into the countersunk hole.

7. The waste recycling mechanism for container bag production equipment according to claim 6, characterized in that: The left side of the left shaft (6) has an integrally formed impact plate (62).

8. The waste recycling mechanism for container bag production equipment according to claim 7, characterized in that: A sponge (42) is attached to the right end of the output shaft (4). After the impact plate (62) moves to the left, it comes into contact with the sponge (42). Lubricating oil is injected into the inside of the sponge (42).

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