Raw material particle crushing device for vacuum bag production

Abstract

The invention relates to the technical field of plastic particle crushing, and discloses a raw material particle crushing device for vacuum bag production, which comprises a double-roller crusher, and two crushing rollers are mounted in the double-roller crusher. An impurity removal assembly used for preventing vacuum bag raw material particles from being attached to crushing rollers due to pressure and temperature changes is arranged in the double-roller crusher, the impurity removal assembly comprises an inner arc water tank, a driving part, a fan shaft and a bundle-shaped guide shell, and the crushing rollers make direct contact with a cooling medium in the inner arc water tank in the rotating process; direct cooling of the surface of the crushing roller is achieved, then the cooling efficiency is greatly improved, heat generated by extrusion and friction of the crushing roller can be rapidly reduced, meanwhile, the lubricating effect of a cooling medium is beneficial to reduction of adhesiveness of plastic particles, the plastic particles are made to fall off from the crushing roller more easily, and therefore the continuity of the production process is improved, and the production cost is reduced. And the crushing quality of vacuum bag production raw material particles can be stabilized.

Description

Technical Field

[0001] The invention relates to the technical field of plastic particle crushing, in particular to a raw material particle crushing device for vacuum bag production. Background Art

[0002] The raw material particle crushing device for vacuum bag production is designed to refine the raw material particles in order to improve the raw material utilization rate, promote uniform mixing and processing, and reduce costs and energy consumption. The crushed particles are easier to operate in subsequent production, which is a key link in improving the production efficiency and quality of vacuum bags.

[0003] However, there are still some problems with the existing raw material particle crushing devices for vacuum bag production: First, the crushing device is often a double-roll crusher, which has certain advantages in crushing raw material particles for vacuum bag production, such as a large crushing ratio, simple structure, and reliable operation.

[0004] However, since the raw materials of vacuum bags are plastic materials, during the crushing process, large plastic particles will be squeezed by the double rollers. This squeezing effect will intensify the intermolecular friction inside the particles, thereby generating heat. At the same time, the crushing roller will also heat up due to the motor drive and continuous friction with the raw material particles during long-term operation. Under the dual effects of heat and squeezing, the plastic particles will soften and then adhere to the crushing roller.

[0005] To address this problem, the prior art installs a water-cooling assembly, namely a cooling roller, inside the crushing roller. Although the cooling roller can cool the crushing roller to a certain extent, the structure of the cooling roller is relatively complex, and a water-cooling circulation system needs to be constructed inside the crushing roller, which involves additional material, processing and installation costs, thereby greatly increasing the cost of the entire crushing device. Secondly, from the cooling effect point of view, due to the existence of the roller body, a barrier is formed, and the cooling force cannot directly act on the plastic particles. As a result, during the cooling process, the plastic particles need to rely on heat transfer between the roller body to reduce the temperature and thus separate from the roller body. This indirect cooling method is less efficient and takes a long time to cool the particles to a level sufficient to separate from the roller body.

[0006] In addition, the prior art also adds a mechanical scraper to scrape off the plastic particles attached to the roller body. Although this method can clean the adhesion on the roller surface to a certain extent, when the scraper is scraping the roller body, there will be strong friction between the scraper and the roller body, and long-term friction with the roller body will cause aggravated wear of the roller body, requiring frequent replacement, increasing maintenance costs, and the scraping of the scraper will damage the flatness of the roller surface, affecting the normal working performance of the crushing roller and reducing its service life. With the damage to the flatness of the roller surface, the contact with the raw material particles will change in the subsequent crushing process, which will lead to uneven crushing effect and affect the crushing quality of the raw material particles in the production of vacuum bags. In addition, due to the wear of the scraper and the roller body, some debris will be generated, and these debris will be mixed with the raw material particles, which will have a potential impact on the quality of the vacuum bag.

[0007] Secondly, in the feeding link of raw material particle crushing in vacuum bag production, the consistency of raw material entry is critical. In actual production, the existing technology feeds directly on the top of the equipment. Although the raw material particles do not contact the funnel wall during the initial fall, it seems to avoid the contact problem between the particles and the hopper wall. However, when the double-roll crusher is working, the rotation of the rollers will generate local airflow, which will interfere with the falling path of smaller particles and make them unevenly distributed because the particles are small in mass and have mutual adsorption.

[0008] When falling, the particles will collide and adhere to form agglomerates, which have a different falling speed from that of individual particles, thus affecting the stable feeding of the double-roll crusher. At the same time, large agglomerates fall first due to gravity and inertia, and small particles fall after being dispersed by airflow or collision. When the feeding is uneven, the rollers cannot crush the raw materials ideally. When there are too many agglomerates, the rollers are prone to overload, which causes some raw materials to be squeezed and deformed and not completely crushed, requiring secondary crushing, reducing production efficiency.

[0009] In addition, uneven feeding will affect product quality. Uneven feeding will cause uneven distribution of particle size after crushing. In vacuum bag production, the uniformity of particle size will affect the performance of vacuum bags. Unevenness will cause weak points in vacuum bag molding, affecting sealing and strength. It will also cause incomplete heat sealing due to uneven surface during heat sealing, affecting the overall quality.

[0010] To this end, the present invention proposes a raw material particle crushing device for vacuum bag production. Summary of the invention

[0011] The object of the present invention is to provide a raw material particle crushing device for vacuum bag production to solve the problems raised in the above background technology.

[0012] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a raw material particle crushing device for vacuum bag production, comprising a double-roll crusher, wherein two crushing rollers are installed inside the double-roll crusher, and an impurity removal component is arranged inside the double-roll crusher for preventing vacuum bag raw material particles from adhering to the crushing rollers due to pressure and temperature changes, and the impurity removal component includes an inner arc water pool, a driving member, a fan shaft and a bundle guide shell.

[0013] The inner arc water pool stores a cooling medium, specifically distilled water, and the inner arc water pool is used to directly contact the cooling medium inside the inner arc water pool through the rotation of the crushing roller itself, thereby achieving direct cooling of the crushing roller and reducing the adhesion of raw material particles.

[0014] The driving member is used to drive the fan shaft so that the fan shaft can dry and disperse the cooling medium and raw material particles on the surface of the crushing roller, and further realize direct cooling of the crushing roller.

[0015] The bundle-shaped guide shell is located at an inclined upper position of the crushing roller, and the bundle-shaped guide shell is used to guide the airflow generated by the fan shaft, so as to accurately guide the airflow to the surface of the crushing roller.

[0016] Preferably, there are two inner arc water pools, which are fixedly connected to the inner wall of the double-roll crusher. The edge of the inner arc water pool on the side close to the center of the double-roll crusher is chamfered, and the edge of the inner arc water pool on the side away from the center of the double-roll crusher expands outward.

[0017] Preferably, there are two driving members, which consist of a bevel gear connecting rod, a connecting rod, a rotating shaft, a bevel gear and two belts. The bevel gear connecting rod and the connecting rod are respectively rotatably connected to the inner wall of the double-roll crusher, the rotating shaft is fixedly connected to the inner wall of the double-roll crusher, and the bevel gear is rotatably connected to the rotating shaft, and the bevel gear and the bevel gear connecting rod are meshed with each other, and the two belts are both transmission-connected between the crushing roller and the bevel gear connecting rod and the connecting rod.

[0018] Preferably, there are two fan shafts in total, and both are fixedly connected to the bevel gear of the driving member. The outer surfaces of the fan shafts are provided with fan blades arranged equidistantly in a ring shape, and the outer surfaces of the fan blades are symmetrically provided with guide grooves, and the guide grooves are arranged to fit the curved trajectory of the fan blades.

[0019] Preferably, two of the bundle-shaped guide shells are provided, and both are fixedly connected to the inner wall of the double-roll crusher, and one side of the bundle-shaped guide shell close to the center is provided as a bundle-shaped outlet.

[0020] Preferably, the outer surface of the bevel gear connecting rod of the driving member is fixedly connected with a plurality of rectangular blades which are arranged equidistantly in a ring shape, and the rectangular blades are located in the middle of the bevel gear connecting rod.

[0021] Preferably, a water level controller, a filter and a micro vibration motor are installed inside the inner arc water pool, and a moisture absorption roller is installed inside the double-roll crusher and on the obliquely upward side of the crushing roller away from the bundle guide shell.

[0022] Preferably, a hopper is installed on the top of the double-roll crusher, and a fine-tuning assembly is arranged inside the hopper. The fine-tuning assembly includes two fixed plates, and micro-axes are rotatably connected inside the two fixed plates. A fine-tuning rotating plate is fixedly connected to the outer surface of the micro-axle, and an elastic member is arranged between the fine-tuning rotating plate and the fixed plate. The elastic member is specifically implemented as a torsion spring, that is, the torsion spring is fixedly connected between the fine-tuning rotating plate and the fixed plate.

[0023] Preferably, the fine-tuning rotating plate is configured to have a sharp top and a rounded transition, and both ends of the bottom side thereof extend obliquely downward, and the upper edges of both ends of the bottom side of the fine-tuning rotating plate are rounded.

[0024] Preferably, arc-shaped reflective plates are fixedly connected to both sides of the inner surface of the hopper, and guide grooves are linearly and equidistantly arranged on the surface of the arc-shaped reflective plates. The guide grooves are formed in contact with the curved surface of the arc-shaped reflective plates, and the cross-section of the guide grooves is circular.

[0025] Preferably, the micro vibration motor is mounted on the outer wall of the inner arc water pool, and its output shaft passes through the inner arc water pool.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The crushing roller is in direct contact with the cooling medium inside the inner arc water pool during rotation, thereby achieving direct cooling of the crushing roller surface, thereby greatly improving the cooling efficiency, and can quickly reduce the heat generated by the crushing roller due to extrusion and friction. At the same time, the lubricating effect of the cooling medium helps to reduce the adhesion of the plastic particles, making it easier for the plastic particles to fall off the crushing roller, thereby improving the continuity of the production process and helping to stabilize the crushing quality of the raw material particles in the production of vacuum bags.

[0027] Compared with the prior art, the existing cooling roller has a complex structure and requires the construction of a water cooling circulation system, which is costly. The present invention directly utilizes the cooling medium in the inner arc water pool and does not require a complex internal water cooling structure, greatly reducing the equipment cost. At the same time, the cooling force in the prior art indirectly acts on the plastic particles, which is inefficient, while the direct cooling and lubrication method of the impurity removal component can more efficiently solve the problem of particle adhesion, and has more advantages in improving production efficiency and product quality.

[0028] Among them: the bundle guide shell is located at the upper inclined position of the crushing roller, which can guide the airflow more effectively, so that the air cooling effect is concentrated on the area with more particles adhering to the surface of the crushing roller, which helps to enhance the air cooling effect of the fan shaft on the crushing roller, ensuring that the plastic particles on the surface of the crushing roller are blown off more thoroughly.

[0029] Among them: the chamfer treatment on one side of the inner arc water pool close to the middle effectively prevents plastic particles from entering the inner arc water pool, while the outward expansion design on the other side can use its own expansion trend to collect residual water and plastic particles for centralized treatment, which helps to maintain the cleanliness of the production environment and improve the stability of the entire production process.

[0030] Among them: the fan shaft surface is provided with a guide groove that fits the curved surface, which can make the air flow more concentrated and blow to the surface of the crushing roller in an orderly manner, thereby improving the efficiency of air cooling.

[0031] Among them: since the rectangular blades are controlled to rotate by the bevel gear connecting rod, the rotation of the rectangular blades will produce more complex and turbulent airflow. The turbulent airflow can reach every corner of the surface of the crushing roller, more effectively blow off the adhered plastic particles, and improve the thoroughness of particle cleaning.

[0032] Among them: although the moisture absorption roller does not contact with the crushing roller, it can reduce the interference of moisture on the production process and help improve the quality of raw material particles in vacuum bag production.

[0033] Among them: Since the impurity removal components are low in cost and easy to maintain, they help enterprises reduce investment in production equipment.

[0034] Among them: the combined effect of air cooling and water cooling not only has many benefits for the crushing roller itself, but also can improve the working environment. For example, air cooling can blow away dust and other impurities on the surface of the crushing roller, while water cooling can reduce the temperature of the crushing roller while keeping the humidity of the surrounding air in a relatively stable state, reducing the dust. At the same time, this method is also beneficial to the health of operators and reduces health problems caused by inhaling dust. In addition, it can also reduce the mixing of dust and other impurities into the raw materials to affect the quality of the vacuum bag.

[0035] 2. When the raw material particles are put into the machine, they are in contact with the top of the fine-tuning rotating plate, forcing the raw materials to be impacted by the fine-tuning rotating plate to prevent the particles from agglomerating and ensure uniform feeding, which further helps the rollers to ideally crush the raw materials and improves the problem of low production efficiency caused by uneven feeding. At the same time, uniform feeding ensures uniform distribution of particle size after crushing, which helps to improve the performance of the vacuum bag, such as sealing and strength, as well as heat sealing effect, thereby improving the overall quality of the vacuum bag.

[0036] Compared with the existing technology, the local airflow generated by the double-roll crusher during feeding interferes with the falling of particles, resulting in problems such as uneven feeding and particle agglomeration. The fine-tuning component effectively solves these problems through its unique structural design, avoids the situation where secondary crushing due to uneven feeding reduces production efficiency, and can better ensure product quality. It has more advantages in the feeding link of raw material particle crushing in vacuum bag production.

[0037] Among them: the rounded corners on the top of the fine-tuning rotating plate can prevent the particles from being subjected to excessive impact, giving the particles a buffering function, which helps to protect the integrity of the raw material particles and prevent the particles from being broken or deformed due to excessive impact force, ensuring that the raw material particles enter the subsequent crushing process in a better state, further ensuring the stability of product quality.

[0038] Among them: the fine-tuning rotating plate can be elastically rotated by the elastic part. This feature is very effective when facing the problem of uneven quality encountered in the process of raw material feeding. The fine-tuning rotating plate can be fine-tuned by its own rotation to ensure uniform feeding.

[0039] Among them: the guide grooves opened on the surface of the fine-tuning rotating plate can guide the movement direction of the raw material particles, making the particles more orderly during the collision and reflection process. According to the principles of fluid mechanics, the guide grooves can reduce the resistance of particle movement, allowing the particles to move more smoothly on the surface of the fine-tuning rotating plate, further enhancing the effect of preventing particle agglomeration.

[0040] Among them: Since the fine-tuning rotating plate is located inside the hopper and covers the outlet of the hopper at both ends, it can prevent dust inside the double-roll crusher from escaping, and can also reduce the negative impact of airflow caused by the rotation of the crushing roller on the raw material particles through its own blocking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a front three-dimensional schematic diagram of the main structure of the present invention.

[0042] Figure 2 It is a rear perspective schematic diagram of the main structure of the present invention.

[0043] Figure 3 It is a sectional stereoscopic schematic diagram of the main structure of the present invention.

[0044] Figure 4 For the present invention Figure 3 Enlarged three-dimensional schematic diagram of the structure at point A in the middle.

[0045] Figure 5 For the present invention Figure 3 Enlarged three-dimensional schematic diagram of the structure at point B in the middle.

[0046] Figure 6 For the present invention Figure 3 Enlarged three-dimensional schematic diagram of the structure at point C in the middle.

[0047] Figure 7 It is a schematic diagram of the connection relationship between the moisture absorption roller and the double-roll crusher of the present invention.

[0048] Figure 8 For the present invention Figure 7 Enlarged three-dimensional schematic diagram of the structure at point D in the middle.

[0049] Fig. 9 For the present invention Figure 2 Enlarged three-dimensional schematic diagram of the structure at E in the middle.

[0050] Fig.10 For the present invention Figure 3 Enlarged three-dimensional schematic diagram of the structure at F in the middle.

[0051] In the figure: 11, double-roll crusher; 12, crushing roller; 13, hopper.

[0052] 2. Debris removal assembly; 21. Inner arc water pool; 22. Driving member; 23. Fan shaft; 24. Bundle guide shell; 25. Desiccant roller.

[0053] 3. Fine-tuning assembly; 31. fixing plate; 32. micro-axis; 33. elastic member; 34. fine-tuning rotating plate; 35. arc-shaped reflective plate. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] It should be noted that the structure and working principle of the double-roll crusher 11 and the crushing roller 12 belong to the prior art, so they will not be described in detail later. Similarly, the water level controller only provides a water level control function for the inner arc water pool 21, the filter only provides a function of filtering particulate impurities for the inner arc water pool 21, and the micro vibration motor only provides vibration force for the cooling medium inside the inner arc water pool 21. Therefore, the technical principles and implementation methods of the above structure belong to the scope of the prior art. In view of the versatility and maturity of the above structure, its specific structure and working principle will not be described in detail later.

[0056] Example 1, please refer to Figures 1 to 6As shown, a raw material particle crushing device for vacuum bag production includes a double-roll crusher 11, two crushing rollers 12 are installed inside the double-roll crusher 11, and a dust removal component 2 is arranged inside the double-roll crusher 11 for preventing the vacuum bag raw material particles from adhering to the crushing rollers 12 due to pressure and temperature changes. The dust removal component 2 includes an inner arc water pool 21, a driving member 22, a fan shaft 23 and a bundle guide shell 24.

[0057] The inner arc water pool 21 stores a cooling medium, specifically distilled water. The inner arc water pool 21 is used to directly contact the cooling medium inside the inner arc water pool 21 through the rotation of the crushing roller 12 itself, thereby directly cooling the crushing roller 12 and reducing the adhesion of raw material particles.

[0058] The driving member 22 is used to drive the fan shaft 23 so that the fan shaft 23 can dry and disperse the cooling medium and raw material particles on the surface of the crushing roller 12 and further realize direct cooling of the crushing roller 12 .

[0059] The bundle guide shell 24 is located at an inclined upper position of the crushing roller 12 , and the bundle guide shell 24 is used to guide the airflow generated by the fan shaft 23 , so as to accurately guide the airflow to the surface of the crushing roller 12 .

[0060] Please refer to Figures 1 to 8 As shown, there are two inner arc water pools 21, which are fixedly connected to the inner wall of the double roll crusher 11. The edge of the inner arc water pool 21 close to the center of the double roll crusher 11 is chamfered, and the edge of the inner arc water pool 21 away from the center of the double roll crusher 11 is expanded outward. There are two driving members 22, which are composed of a bevel gear connecting rod, a connecting rod, a rotating shaft, a bevel gear and two belts. The bevel gear connecting rod and the connecting rod are respectively rotatably connected to the inner wall of the double roll crusher 11, the rotating shaft is fixedly connected to the inner wall of the double roll crusher 11, and the bevel gear is rotatably connected to the rotating shaft, and the bevel gear and the bevel gear connecting rod are meshed with each other. The two belts are both drivingly connected between the crushing roller 12 and the bevel gear connecting rod and the connecting rod. There are two fan shafts 23, which are fixedly connected to the bevel gear of the driving member 22. The outer surfaces of the fan shafts 23 are installed with fan blades arranged in a circular manner and at equal intervals, and the outer surfaces of the fan blades are symmetrically provided with guide grooves, which are arranged to fit the curved trajectory of the fan blades. There are two beam guide shells 24, which are fixedly connected to the inner wall of the double-roll crusher 11. The side of the beam guide shell 24 close to the center is set as a beam outlet. The outer surfaces of the bevel gear connecting rods of the driving member 22 are fixedly connected with a number of rectangular blades arranged in a circular manner and at equal intervals, and the rectangular blades are located in the middle of the bevel gear connecting rod.

[0061] It should be noted that a water level controller, a filter and a micro vibration motor are installed inside the inner arc water pool 21, and a moisture absorption roller 25 is installed inside the double-roll crusher 11 and on the oblique upward side of the crushing roller 12 away from the bundle guide shell 24. The surface of the moisture absorption roller 25 can be sleeved with non-woven fabric. The micro vibration motor is installed on the outer wall of the inner arc water pool 21, and its output shaft passes through the inner arc water pool 21.

[0062] Specifically, after the operator starts the double-roll crusher 11 and the electrical appliances inside, the plastic granule raw material is put into the double-roll crusher 11 through the hopper 13. When the plastic raw material particles enter the double-roll crusher 11 and pass through the two crushing rollers 12, the particles are subjected to the extrusion force and the shear force due to the reverse rotation of the two crushing rollers 12, and are thereby crushed into small plastic particles.

[0063] During the operation of the crushing roller 12, the molecular structure of the shaped particles will change when they are deformed, the distance between molecules will decrease, and the intermolecular force will increase, which will change the physical properties of the shaped particles and show stronger adhesion. At the same time, the crushing roller 12 is in constant friction contact with the shaped particles during continuous operation. According to the principle of frictional heat generation, mechanical energy is converted into thermal energy, causing the crushing roller 12 to gradually heat up.

[0064] As the double-roll crusher 11 continues to operate, the temperature of the crushing roller 12 continues to rise, and some plastic particles will adhere to its surface. When the crushing roller 12 rotates so that the side in contact with the plastic particles rotates to the side of the inner arc water pool 21, the distilled water stored in the inner arc water pool 21 will directly contact the crushing roller 12, and the distilled water inside the inner arc water pool 21 can absorb a large amount of heat from the surface of the crushing roller 12, thereby directly cooling the crushing roller 12. At the same time, the presence of water will reduce the cohesive force between the plastic particles, further reducing the adhesion of the plastic particles themselves.

[0065] Then, as the crushing roller 12 continues to rotate, some plastic particles will fall into the inner arc water pool 21 due to cooling and the existence of cohesive force. The filter installed inside the inner arc water pool 21 will filter these particles to prevent the particles from accumulating in the water pool and affecting the performance of the cooling medium. At the same time, the rotation of the crushing roller 12 transmits power to the bevel gear connecting rod through the belt. The bevel gear connecting rod and the bevel gear are meshed with each other, causing the bevel gear to rotate, thereby driving the fan shaft 23 to rotate. When the fan shaft 23 rotates, the fan blades installed on its outer surface will generate airflow.

[0066] Since the outer surface of the fan blades is symmetrically provided with guide grooves that fit the curved surface trajectory, these guide grooves can optimize the flow path of the airflow, making the airflow more concentrated and orderly, and the beam guide shell 24 is located at the upper inclined position of the crushing roller 12, and the side close to the center is set as a beam outlet. According to the principle of fluid continuity, the cross-sectional area of ​​the beam outlet is smaller, so the flow velocity of the airflow is accelerated when passing through the beam outlet, and the airflow generated by the fan shaft 23 is guided by the beam guide shell 24 and blown accurately to the surface of the crushing roller 12. Since the inner arc water pool 21 has cooled the crushing roller 12 and reduced its adhesion, the precise airflow guidance can effectively blow away the plastic particles. At the same time, the airflow blows the water on the surface of the crushing roller 12 back into the inner arc water pool 21, realizing the recycling of the cooling medium.

[0067] During the rotation of the fan shaft 23, the bevel gear connecting rod and the two rows of rectangular blades on the surface of the connecting rod play an important role. Since the bevel gear connecting rod and the connecting rod are connected by a belt and a crushing roller 12, they will rotate with the crushing roller 12, and the rectangular blades will stir the air inside the double-roll crusher 11 as the bevel gear connecting rod and the connecting rod rotate. On the one hand, these rectangular blades can disrupt the airflow, causing the airflow to produce more vortices and turbulence, thereby enhancing the sweeping effect on the surface of the crushing roller 12 and more thoroughly blowing away the plastic particles adhering to the surface of the crushing roller 12; on the other hand, the rotation of the rectangular blades can promote better circulation of air inside the double-roll crusher 11, and bring the blown-off plastic particles and impurities such as water vapor into the inner arc water pool 21, so as to prevent them from accumulating locally and affecting the normal operation of the equipment.

[0068] During the whole process, the airflow generated by the rotation of the fan shaft 23 can not only blow away the plastic particles on the surface of the crushing roller 12, but also blow away the dust and other impurities generated by the crushing process inside the equipment away from the area near the crushing roller 12, ensuring that the working environment inside the double-roll crusher 11 is relatively clean.

[0069] Finally, when the crushing roller 12 continues to rotate, the hygroscopic roller 25 is closest to the crushing roller 12 that has just touched the side of the inner arc water pool 21. Since the surface of the hygroscopic roller 25 is covered with non-woven fabric, and since the non-woven fabric has a rich pore structure, according to the principle of capillary action, when there is water vapor on the surface of the crushing roller 12, the hygroscopic roller 25 can absorb the water vapor through the air. This process can prevent the water vapor from condensing on the surface of the crushing roller 12, avoid the water vapor from affecting the crushing of the plastic particles, ensure that the crushing process is carried out in a relatively dry environment, and is conducive to improving the crushing efficiency and product quality.

[0070] Finally, the crushed plastic particles will fall between the two crushing rollers 12, and the operator can collect them at this time.

[0071] Example 2, based on Example 1, please refer to Figure 3 , Fig. 9 and Fig.10 As shown, a hopper 13 is installed on the top of the double-roll crusher 11, and a fine-tuning component 3 is arranged inside the hopper 13. The fine-tuning component 3 includes two fixed plates 31, and a micro-shaft 32 is rotatably connected inside the two fixed plates 31. A fine-tuning rotating plate 34 is fixedly connected to the outer surface of the micro-shaft 32. An elastic member 33 is arranged between the fine-tuning rotating plate 34 and the fixed plate 31. The elastic member 33 is specifically implemented as a torsion spring, that is, the torsion spring is fixedly connected between the fine-tuning rotating plate 34 and the fixed plate 31. Both sides of the inner surface of the hopper 13 are fixedly connected with arc-shaped reflective plates 35, and the surfaces of the arc-shaped reflective plates 35 are linearly and equidistantly arranged with guide grooves, which are all opened in contact with the curved surface of the arc-shaped reflective plates 35, and the cross-section of the guide grooves is circular.

[0072] It should be noted that the fine-tuning rotating plate 34 is configured to have a sharp top and a rounded transition, and both ends of its bottom side extend obliquely downward, and the upper edges of both ends of the bottom side of the fine-tuning rotating plate 34 are rounded.

[0073] Specifically, in Example 1, when the operator puts the plastic particles into the hopper 13, the raw materials will first collide with the fine-tuning turn plate 34. When the raw materials are evenly put in, the raw materials are divided into two equal parts by the fine-tuning turn plate 34. At this time, the impact of the raw materials on the fine-tuning turn plate 34 completes the first operation of preventing the raw materials from agglomerating. This is because when the raw materials evenly impact the fine-tuning turn plate 34, the interaction force between the raw material particles will disperse them, avoiding the situation where the raw materials agglomerate together due to too many local particles.

[0074] Subsequently, the raw material slides along the edge of the fine-tuning rotating plate 34 to the arc-shaped reflective plate 35. Since the arc-shaped reflective plate 35 is an arc-shaped structure, when the raw material particles hit the arc-shaped reflective plate 35, they will be reflected according to the characteristics of the arc-shaped surface, that is, they will move toward the bottom of the hopper 13. During this process, the raw material will pass through the guide groove opened on the surface of the arc-shaped reflective plate 35.

[0075] According to the streamline principle in fluid mechanics, the guide groove with a circular cross-section provides a guide path similar to a pipe for the raw material particles. When the raw material particles move along the arc-shaped reflector plate 35, the guide groove can constrain the movement direction of the particles, so that they move in an orderly manner along the trajectory of the guide groove.

[0076] Firstly, the guide groove enhances the effect of preventing raw material agglomeration, because the guide groove separates the raw material particles and avoids excessive collision and aggregation between the particles. Secondly, the guide groove can make the raw material particles more evenly distributed in the hopper 13, ensuring that the movement of the particles inside the hopper 13 is more orderly, thereby providing better guarantee for uniform feeding.

[0077] Finally, the guided and uniform raw materials are evenly impacted and mixed at the bottom side of the hopper 13 and fall into the double-roll crusher 11. Such uniform feeding method can ensure that the double-roll crusher 11 receives evenly distributed raw materials, which is conducive to improving the efficiency and quality of crushing.

[0078] It should be noted that when the raw materials are unevenly fed, they will be divided into two parts by the fine-tuning turn plate 34. However, at this time, a larger part of the raw materials will hit the fine-tuning turn plate 34 with a stronger impact force. According to the principle of mechanics, the larger impact force will cause the fine-tuning turn plate 34 to overcome the elastic force of the elastic member 33 and rotate. In this process, the elastic member 33 is tightened.

[0079] When the raw materials hit the bottom side of the fine-tuning turn plate 34, the axial position of the fine-tuning turn plate 34 will change due to the rotation of the fine-tuning turn plate 34. The side with less raw materials will receive more raw materials due to the inclination of the fine-tuning turn plate 34, so that the amount of raw materials on both sides tends to be balanced. Furthermore, the input of raw materials can be fine-tuned by rotating the fine-tuning turn plate 34. This fine-tuning mechanism can make real-time adjustments based on the unevenness of the raw material input to ensure that the amount of raw materials on both sides is evenly distributed.

[0080] That is, assuming that initially the amount of raw materials on the left side is larger and the amount of raw materials on the right side is smaller, the larger amount of raw materials on the left side impacts the fine-tuning rotating plate 34 to rotate it, and the amount of raw materials on the right side will gradually increase during the rotation until the amount of raw materials on both sides reaches a relatively uniform state.

[0081] Finally, the adjusted raw materials are evenly mixed at the bottom of the hopper 13 and then fall into the double-roll crusher 11. This adjustment mechanism under uneven conditions effectively solves the problems of low working efficiency and poor crushing effect of the double-roll crusher 11 caused by uneven raw material input, thereby ensuring the stability and reliability of the entire production process.

[0082] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0083] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A raw material particle crushing device for vacuum bag production, comprising a double-roll crusher (11), wherein two crushing rollers (12) are installed inside the double-roll crusher (11), characterized in that: The double-roll crusher (11) is provided with an impurity removal component (2) for preventing vacuum bag raw material particles from adhering to the crushing roller (12) due to pressure and temperature changes. The impurity removal component (2) comprises an inner arc water pool (21), a driving member (22), a fan shaft (23) and a bundle guide shell (24). The inner arc water pool (21) stores a cooling medium. The inner arc water pool (21) is used to directly contact the cooling medium in the inner arc water pool (21) through the rotation of the crushing roller (12), thereby achieving the purpose of cooling the crushing roller (12). 2) direct cooling and reducing the adhesion of raw material particles; the driving member (22) is used to drive the fan shaft (23), so that the fan shaft (23) can dry and disperse the cooling medium and raw material particles on the surface of the crushing roller (12), and further realize direct cooling of the crushing roller (12); the bundle guide shell (24) is located at a position inclined upward of the crushing roller (12), and the bundle guide shell (24) is used to guide the airflow generated by the fan shaft (23), so as to accurately guide the airflow to the surface of the crushing roller (12).

2. The raw material particle crushing device for vacuum bag production according to claim 1 is characterized in that: Two inner arc water pools (21) are provided in total and are fixedly connected to the inner wall of the double-roll crusher (11). The edge of the inner arc water pool (21) on the side close to the center of the double-roll crusher (11) is chamfered, and the edge of the inner arc water pool (21) on the side away from the center of the double-roll crusher (11) is expanded outward.

3. The raw material particle crushing device for vacuum bag production according to claim 1 is characterized in that: There are two driving members (22) in total, and they are composed of a bevel gear connecting rod, a connecting rod, a rotating shaft, a bevel gear and two belts. The bevel gear connecting rod and the connecting rod are respectively rotatably connected to the inner wall of the double-roll crusher (11). The rotating shaft is fixedly connected to the inner wall of the double-roll crusher (11), and the bevel gear is rotatably connected to the rotating shaft. The bevel gear and the bevel gear connecting rod are meshed with each other. The two belts are both drivingly connected between the crushing roller (12) and the bevel gear connecting rod and the connecting rod.

4. The raw material particle crushing device for vacuum bag production according to claim 1, characterized in that: Two fan shafts (23) are provided in total, and both are fixedly connected to the bevel gear of the driving member (22); the outer surfaces of the fan shafts (23) are provided with fan blades arranged equidistantly in a ring shape, and the outer surfaces of the fan blades are symmetrically provided with guide grooves, and the guide grooves are arranged to fit the curved surface trajectory of the fan blades.

5. The raw material particle crushing device for vacuum bag production according to claim 1 is characterized in that: Two bundle-shaped guide shells (24) are provided in total, and both are fixedly connected to the inner wall of the double-roll crusher (11). A side of the bundle-shaped guide shell (24) close to the center is provided with a bundle-shaped outlet.

6. The raw material particle crushing device for vacuum bag production according to claim 3 is characterized in that: The outer surface of the bevel gear connecting rod of the driving member (22) is fixedly connected with a plurality of rectangular blades arranged in an annular manner and at equal intervals, and the rectangular blades are located in the middle of the bevel gear connecting rod.

7. The raw material particle crushing device for vacuum bag production according to claim 1, characterized in that: A water level controller, a filter and a micro vibration motor are installed inside the inner arc water pool (21), and a moisture absorption roller (25) is installed inside the double-roll crusher (11) and on the obliquely upward side of the crushing roller (12) away from the bundle-shaped guide shell (24).

8. The raw material particle crushing device for vacuum bag production according to claim 1, characterized in that: A hopper (13) is installed on the top of the double-roll crusher (11), a fine-adjustment assembly (3) is arranged inside the hopper (13), and the fine-adjustment assembly (3) comprises two fixed plates (31), micro-axes (32) are rotatably connected inside the two fixed plates (31), a fine-adjustment rotating plate (34) is fixedly connected to the outer surface of the micro-axle (32), and an elastic member (33) is arranged between the fine-adjustment rotating plate (34) and the fixed plate (31).

9. The raw material particle crushing device for vacuum bag production according to claim 8, characterized in that: The fine-adjustment rotating plate (34) is configured to have a sharp top and a rounded transition shape, and both ends of its bottom side extend obliquely downward, and the upper edges of both ends of the bottom side of the fine-adjustment rotating plate (34) are rounded.

10. The raw material particle crushing device for vacuum bag production according to claim 9, characterized in that: Both sides of the inner surface of the hopper (13) are fixedly connected with arc-shaped reflection plates (35), and the surfaces of the arc-shaped reflection plates (35) are provided with guide grooves arranged linearly and equidistantly, the guide grooves are formed to fit the curved surfaces of the arc-shaped reflection plates (35), and the cross-sections of the guide grooves are circular.

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