Soundproof ball mill device for construction waste

Abstract

The application relates to the technical field of ball mills, and discloses sound-insulation type ball milling equipment for construction waste, which comprises a cylinder, sealing heads are arranged on the two sides of the cylinder, a plurality of lining plates are arranged in the cylinder, a driving element is arranged outside the cylinder, a vibration propagation assembly is arranged in the cylinder, the vibration propagation assembly comprises spiral grooves and a plurality of flow-through holes, small particle substances enter the spiral grooves under the action of the flow-through holes, the crushing efficiency is improved under the same energy consumption, the small particle substances enter the spiral grooves, the adhesion of the small particle substances to large bulk materials and the lining plates is reduced, the small particle substances are adhered to the large bulk materials in the past, a buffer layer is formed between the grinding body and the large bulk construction solid waste, part of energy is absorbed, and the crushing efficiency of the large bulk construction solid waste is reduced, the small particle substances can be treated in a targeted manner after entering the spiral grooves, the above-mentioned adverse effects are avoided, and the crushing efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of ball mill technology, specifically to a soundproof ball mill for construction waste. Background Technology

[0002] Ball mills are a commonly used pulverizing equipment. By rotating the cylinder, the grinding media impact and grind the material, which can grind the material into fine powder or ultrafine powder. They are widely favored because they have the characteristics of large pulverization ratio, simple structure and convenient operation.

[0003] However, existing ball mills still have some problems: First, in the crushing of construction solid waste, the grinding process of existing technology is very intense, and the crushing force applied to construction solid waste is relatively large. Although relevant personnel will do their best to remove small particulate matter from construction solid waste in the early processing steps, the presence of small particulate matter is almost impossible to completely avoid due to the complex composition of construction solid waste and its extremely wide range of sources.

[0004] Even after meticulous screening and separation, some larger pieces of construction solid waste will still decompose further under the powerful impact and compression of the grinding media during the actual crushing process, thus producing new small particulate matter.

[0005] These newly generated small particles will continue to participate in the collision process between the grinding media and the construction solid waste. Since these small particles have already reached the degree of fragmentation and have relatively low hardness, during the repeated and violent collisions with the grinding media, they act like sandpaper, continuously rubbing the surface of the grinding media, thereby accelerating the wear of the grinding media. At the same time, the liner, a key component for protecting the ball mill cylinder, is also inevitably corroded by the small particles.

[0006] More importantly, under ideal crushing conditions, the energy of the grinding media should be mainly concentrated on large pieces of construction waste, crushing them into particles that meet specific requirements through strong impact and compression. However, in actual operation, when a large amount of small particles are mixed in, they form a buffer layer between the grinding media and the large pieces of construction waste. When the grinding media impacts the large pieces of construction waste with a large crushing force, the small particles absorb some energy, resulting in a reduction in the energy actually acting on the large pieces of construction waste. This not only significantly reduces the crushing efficiency of large pieces of construction waste, but also results in uneven particle size after crushing, seriously affecting the efficiency and quality of the entire construction waste treatment process.

[0007] In addition, during the high-speed operation of the ball mill, due to the intense grinding and large crushing force, small particles will gradually accumulate and adhere to the surface of the liner under the strong extrusion and friction of the grinding media. Over time, these small particles will gradually form a relatively dense layered structure.

[0008] Due to the intense friction between the grinding media and construction waste, as well as the operation of equipment such as motors, a large amount of heat is generated. Under normal circumstances, this heat is easily dissipated into the surrounding environment through the cylinder and liners, thus maintaining the stable temperature inside the ball mill. However, when the surface of the liner is covered by a layered structure formed by small particles, the heat transfer path is blocked. This structure acts like a heat insulation film, making it difficult for heat to dissipate effectively, which in turn leads to an increase in the internal temperature of the ball mill. Excessive temperature not only adversely affects the performance of the ball mill and reduces its working efficiency, but also damages the key components of the equipment, further aggravating the equipment failure rate and increasing the maintenance cost. It is particularly noteworthy that this intense grinding and large crushing force can also cause excessive wear on the cylinder, affecting the service life and stability of the equipment.

[0009] Secondly, during the operation of the ball mill, the grinding media begin to fall under the influence of the inner wall of the cylinder. During this process, the grinding media located at the lower part of the cylinder will generate a huge impact force when it falls from a height. This impact force repeatedly acts on the liner and cylinder in this area.

[0010] In the lower part of the cylinder, the liner, as the component that directly bears the impact of the grinding media, will gradually deform in local areas due to long-term exposure to such high-intensity impacts. Since the liner is usually fixed to the inner wall of the cylinder with bolts, the local deformation of the liner will lead to a decrease in the tightness of the bolts, making the bolts more prone to loosening under vibration. Once the bolts loosen, the fixing effect of the liner will be affected, and the liner may shift or fall off, thus failing to effectively protect the lower part of the cylinder. More seriously, when the ball mill is running at high speed, the loose bolts may fly out. These flying bolts have high speed and energy, and if they hit operators or other equipment, they can easily cause serious work-related accidents, posing a huge threat to the lives of production personnel.

[0011] Furthermore, because the liner is constantly under localized deformation, the connected cylinder is subjected to uneven impact loads. This means that localized areas at the lower part of the cylinder will gradually develop deformation phenomena such as dents or bulges. While the liner, as a relatively independent protective component, can be easily disassembled and replaced when deformed or damaged, with relatively little impact on production, the cylinder, as the core structural component of the ball mill, is much more complicated to replace. Replacing the cylinder involves not only extensive disassembly and installation work but also adjustments and calibrations to the entire ball mill structure. This not only consumes a significant amount of time and manpower but may also affect the performance and stability of the ball mill, potentially leading to production stoppages.

[0012] Therefore, this invention proposes a soundproof ball mill for construction waste. Summary of the Invention

[0013] The purpose of this invention is to provide a soundproof ball mill for construction waste, so as to solve the problems mentioned in the background art.

[0014] To achieve the above objectives, the present invention provides the following technical solution: a soundproof ball mill for construction waste, comprising a cylinder, with end caps installed on both sides of the cylinder, a plurality of liners installed inside the cylinder, a driving component installed outside the cylinder, and a vibration propagation assembly provided inside the cylinder, the vibration propagation assembly including a spiral groove and a plurality of flow holes; The spiral groove is formed inside the cylinder, and several flow holes are arranged in a spiral shape at equal intervals between the spiral groove and the liner.

[0015] Preferably, a flow sleeve is installed inside each of the flow holes.

[0016] Preferably, several of the flow sleeves and flow holes face away from the driving member, and their volumes gradually decrease.

[0017] Preferably, the root of the spiral groove is rounded.

[0018] Preferably, the thread direction of the spiral groove is the same as the rotation direction of the cylinder.

[0019] Preferably, the side of the spiral groove away from the drive member is not in contact with the liner.

[0020] Preferably, the liners are arranged in a spiral shape at equal intervals inside the cylinder, and the inner side of the liner is evenly arranged with inwardly protruding material dropping steps. The material dropping steps of two adjacent liners are staggered, and the upper lifting edge of the material dropping step is designed to be inclined. When the cylinder is working, the material to be processed is lifted upward along the rotating drop step. As the angle between the upper part of the drop step and the horizontal plane increases, the material to be processed slides and rolls along the drop step to the drop step of the adjacent liner plate.

[0021] Preferably, a support frame is installed below the cylinder, and the liner is installed inside the cylinder by screws and bolts. A stress dispersion component is provided on the top of the support frame. The stress dispersion component includes a wrapping frame. The wrapping frame has an arc-shaped structure and is fixedly connected to the top of the support frame. Several first grooves are arranged linearly and equidistantly on the surface of the wrapping frame. Several rotating disks are rotatably connected inside each first groove.

[0022] Preferably, the rotating disks are all tangent to the two side walls of the bolts closest to the rotating disks, and the bottom of the packaging frame gradually expands outward.

[0023] Preferably, the surface of the package holder has a plurality of second grooves between every two first grooves, and an abutment plate is rotatably connected to the center of the second groove. A telescopic rod is symmetrically fixedly connected inside each second groove, and the output ends of the telescopic rods are installed on both sides of the abutment plate.

[0024] Preferably, the inside of the cylinder is provided with a plurality of grinding balls.

[0025] Preferably, the volumes of the flow hole and the flow sleeve are both smaller than the volume of the grinding ball.

[0026] Compared with the prior art, the beneficial effects of the present invention are: 1. By allowing small particles to enter the spiral groove through the flow holes, the crushing rate is improved with the same energy consumption. The entry of small particles into the spiral groove reduces their adhesion to large materials and the liner. Previously, when small particles adhered to large materials, they formed a buffer layer between the grinding media and the large construction waste, absorbing some energy and reducing the crushing efficiency of the large construction waste. Now, with small particles entering the spiral groove, they are treated specifically, avoiding these adverse effects and thus improving crushing efficiency. Simultaneously, due to the spiral arrangement of the liner and the inclined design of the discharge steps, the construction waste slides slightly on the liner surface, increasing the frequency of its fall. This results in a faster grinding frequency in this multi-layered, multi-batch grinding process, and less wear on the liner.

[0027] In addition, small particles have relatively low hardness and are prone to wear during repeated contact with the grinding media and liners. After entering the spiral groove, this wear is effectively alleviated. Moreover, since the volume of the flow hole is smaller than that of the grinding ball, when the material blocks the flow hole, most of the grinding ball itself can pass through the flow hole. Because the volume of the grinding ball is larger than that of the flow hole, it can prevent the blockage problem to a certain extent and ensure the normal operation of the ball mill.

[0028] Specifically, when the ball mill is running, the grinding media collides with the construction waste, generating vibration. The spiral structure of the spiral groove allows the vibration to propagate, reflect, and refract within it, thereby changing the direction and intensity distribution of the vibration. This makes the vibration energy more evenly distributed inside the cylinder, allowing the vibration to act more effectively on the construction waste, improving the crushing effect, and avoiding local over-crushing or insufficient crushing.

[0029] Specifically, during vibration propagation, the shape of the spiral groove gradually dissipates vibration energy, which helps reduce the vibration amplitude during ball mill operation, reduces damage to the equipment caused by excessive vibration, and improves the stability and service life of the equipment. At the same time, vibration dissipation can also reduce the transmission of vibration to the external environment and reduce noise generation.

[0030] Among them, the spiral groove can play a damping role. When the grinding media collides with the construction waste, the spiral groove can absorb and buffer part of the impact energy, preventing the instantaneous release of energy from causing excessive impact on the equipment.

[0031] The movement of small particles and air within the spiral groove promotes heat transfer and exchange. The heat convection effect allows heat to be transferred more quickly from high-temperature areas to low-temperature areas, which helps maintain the temperature stability inside the ball mill and prevents local overheating from affecting equipment performance.

[0032] Among them, the spiral groove structure increases the surface area inside the cylinder. Compared with the traditional smooth inner wall of the cylinder, the spiral groove provides more heat dissipation area, which allows heat to be dissipated to the surrounding environment more effectively, thus improving the heat dissipation efficiency of the ball mill.

[0033] Among them, after small particles enter the spiral groove, the spiral shape of the spiral groove causes the small particles to be dispersed and distributed in the groove. This dispersion effect avoids excessive accumulation of small particles in local areas and reduces concentrated wear of small particles on the grinding media and liners.

[0034] During the operation of the ball mill, the cylinder and spiral groove are subjected to various forces, such as the impact of the grinding media and the pressure of the material. The rounded transition allows the stress to be distributed more evenly in the root area, avoiding the generation and propagation of cracks caused by stress concentration.

[0035] The liners are arranged in a spiral pattern at equal intervals inside the cylinder. This arrangement, in conjunction with the spiral grooves, can better guide the movement of construction waste and small particles inside the cylinder, thereby creating an orderly flow of materials within the cylinder. This increases the contact opportunities and collision frequency between the materials and the grinding media. At the same time, the spirally arranged liners can also enhance the overall structural strength of the cylinder and improve the stability of the equipment.

[0036] Specifically, the spiral groove has the same thread direction as the cylinder's rotation direction. This allows the small particles to move more smoothly within the spiral groove as the cylinder rotates, enabling them to flow orderly along the spiral groove and preventing backflow and jamming.

[0037] In addition to achieving the aforementioned beneficial effects, the present invention also has the following advantages: In traditional ball mills, the cylinder body needs to withstand the main grinding and impact crushing processes. Therefore, the cylinder walls of traditional ball mills are usually designed to be thick, which directly results in a large overall weight of the equipment. This heavy design not only increases the manufacturing cost of the equipment, but also brings many inconveniences during transportation, installation and operation. However, this invention sets up a material drop step, so that the collision mainly occurs on the material drop step. When construction solid waste moves in the cylinder, it will be thrown when it encounters the material drop step. The collision and grinding action between the grinding media and the construction solid waste is more concentrated at the material drop step. In this way, the impact force and wear force on the cylinder body are relatively reduced, so the inner wall of the cylinder body can be designed to be thinner and lighter. After the cylinder body wall is thinner, the overall weight of the equipment is significantly reduced, which not only reduces the manufacturing cost of the equipment, but also makes the equipment more flexible and convenient during transportation, installation and operation, and reduces energy consumption.

[0038] In addition, the present invention adopts a spiral attachment design, which is simpler and more convenient to process than the complex structure design of traditional ball mills. In the manufacturing process, the spiral attachment structure is easier to standardize and scale up production, which can effectively improve production efficiency and reduce production costs. At the same time, the simple processing process also helps to ensure the stability and consistency of product quality, reduce errors and defects that may be caused by complex processing technology, and further improve the overall performance and reliability of the equipment.

[0039] Among these benefits, the thinner cylinder wall reduces the weight of the equipment, thus lowering transportation costs and difficulties. Furthermore, it eliminates the need for large lifting equipment and complex installation processes, reducing installation time and costs.

[0040] Among them, the thin and light cylindrical design reduces the inertia of the equipment during operation, resulting in a faster response speed and more flexible adjustment of operating parameters, thereby improving the equipment's operational performance and production efficiency.

[0041] Among them, the material drop step bears the main impact and grinding effect, which reduces the wear of the cylinder, extends the service life of the cylinder, and reduces the maintenance and replacement costs of the equipment.

[0042] Among them, the spiral attachment design makes the assembly and disassembly of the equipment more convenient, and allows staff to operate more easily during equipment maintenance and repair, reducing maintenance time and workload.

[0043] Among them, the thinner cylinder wall improves the heat dissipation performance of the equipment. Compared with the thick cylinder, the thinner cylinder can more easily dissipate the heat generated inside to the surrounding environment, which helps to maintain the temperature stability inside the ball mill and improve the operational stability of the equipment.

[0044] Among them, the spiral attachment structure design makes the material flow inside the equipment smoother, reduces the accumulation and blockage of materials in the cylinder, and further improves the material processing efficiency.

[0045] Among them, since the material drop step bears the main impact force, the impact force on the cylinder is reduced, which reduces the vibration amplitude of the cylinder during operation, reduces the damage to other parts of the equipment caused by vibration, and improves the overall stability of the equipment.

[0046] Among them, the spiral attachment design makes the equipment look simpler and more beautiful, and also conforms to the concept of modern industrial design, thus enhancing the equipment's market competitiveness.

[0047] Among them, the thin and light cylindrical design and spiral-attached structure can better adapt to various complex working environments and operating conditions during long-term operation of the equipment, ensuring long-term stable operation of the equipment.

[0048] Among them, the spiral attachment structure design improves the space utilization rate inside the equipment, allowing it to accommodate more materials and grinding media, thereby further improving the equipment's production capacity.

[0049] 2. First, the wrapping frame provides stable support for the bottom of the cylinder. When the ball mill is running, the grinding media falling from a height during the rotation of the cylinder will generate a huge impact force on the lower part of the cylinder. The arc-shaped wrapping frame can absorb these impact forces, thereby protecting the ball mill itself. Second, when the bolts of the liner plate tend to loosen due to long-term impact, the rotating disk can contact the nut. During the rotation of the cylinder, the loose nut is tightened through friction and other forces, thereby maintaining the tightness of the bolts and ensuring that the liner plate can be stably fixed inside the cylinder, effectively preventing the liner plate from shifting or falling off due to loose bolts.

[0050] Specifically, the rotating disc's tightening effect on the loose nut ensures it remains firmly in place. This locking mechanism effectively prevents the nut from flying off due to loosening, especially during high-speed operation of the ball mill. This avoids the nut striking operators or other equipment, eliminating the potential for serious workplace injuries caused by a flying nut and ensuring the safety of production personnel.

[0051] During the operation of the ball mill, the grinding balls are thrown down by the inner wall of the cylinder, and the direction of their fall is towards the bottom of the cylinder. Setting the wrapping frame in this position can more directly and effectively disperse and buffer the impact force on the bottom of the cylinder.

[0052] The packaging frame does not completely enclose the cylinder, and its surface has a first groove and a second groove. During the rotation of the cylinder, this design allows air to flow rapidly between the cylinder and the packaging frame. During the operation of the ball mill, a large amount of heat is generated due to the friction and collision between the grinding media and construction waste. The rapid airflow can accelerate the dissipation of heat and maintain the stable temperature inside the ball mill.

[0053] Among them, when the cylinder is impacted by the grinding media, the contact plate can play a buffering and shock-absorbing role. It can absorb part of the impact force, reduce the direct impact force on the cylinder and support frame, and thus reduce the vibration amplitude of the equipment.

[0054] Among them, the bottom of the wrapping frame gradually expands outward and has an arc-shaped structure. This design increases the contact area between the wrapping frame and the support frame. The larger contact area allows the wrapping frame to support the cylinder more stably, improving the stability of the entire ball mill. At the same time, the arc-shaped structure conforms to the mechanical principles, which can better disperse the pressure transmitted from the cylinder, avoid deformation or damage caused by excessive local stress, and further extend the service life of the equipment.

[0055] Among them, the vibration of the ball mill is effectively reduced due to the function of the stress dispersion component, and the equipment operates more smoothly. Under these circumstances, the resistance that the drive component needs to overcome when driving the cylinder to rotate is also reduced accordingly. According to the law of conservation of energy, when the resistance is reduced, the energy consumed by the drive component to maintain the operation of the ball mill will also be reduced. Attached Figure Description

[0056] Figure 1 This is a frontal perspective three-dimensional schematic diagram of the main structure of the present invention; Figure 2 This is a rear-view perspective view of the main structure of the present invention; Figure 3 This is a three-dimensional schematic diagram of the grinding body's falling motion according to the present invention; Figure 4 For the present invention Figure 3 Enlarged 3D structural diagram at point A; Figure 5 For the present invention Figure 3 Enlarged 3D structural schematic diagram at point B; Figure 6 For the present invention Figure 3 Enlarged 3D structural schematic at point C; Figure 7 This is a schematic diagram of the material flow direction according to the present invention; Figure 8 This is a partial cross-sectional perspective view of the stress dispersion component of the present invention; Figure 9 For the present invention Figure 8Enlarged 3D structural diagram at point D; Figure 10 This is a partial cross-sectional perspective view of the stress dispersion component of the present invention from another angle.

[0057] In the picture: 11. Shell; 12. End cap; 13. Liner; 14. Support frame.

[0058] 2. Vibration propagation component; 20. Material discharge step; 21. Spiral groove; 22. Flow hole; 23. Flow sleeve.

[0059] 3. Stress dispersion component; 31. Wrapping frame; 32. First groove; 33. Rotating disk; 34. Second groove; 35. Contact disk; 36. Telescopic rod. Detailed Implementation

[0060] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0061] It should be noted that the drive unit only provides the rotation function for the cylinder 11, the external feeding device only provides the feeding function for the cylinder 11, and the external receiving device only provides the unloading function for the cylinder 11. The working principle and specific structure of the drive unit, the external feeding device and the external receiving device are all existing technologies. Therefore, given the universality of the above structures, their specific principles will not be described in detail below.

[0062] Example 1, please refer to as follows Figures 1 to 6 As shown, a soundproof ball mill for construction waste includes a cylinder 11, with end caps 12 installed on both sides of the cylinder 11, a number of liners 13 installed inside the cylinder 11, a drive unit installed outside the cylinder 11, and a vibration propagation component 2 installed inside the cylinder 11. The vibration propagation component 2 includes a spiral groove 21 and a number of flow holes 22. The spiral groove 21 is opened inside the cylinder 11, and several flow holes 22 are arranged in a spiral shape and are opened between the spiral groove 21 and the liner 13.

[0063] Please refer to the example below. Figures 1 to 6As shown, each flow hole 22 is equipped with a flow sleeve 23. Several flow sleeves 23 and flow holes 22 face away from the driving component, and their volumes gradually decrease. The root of the spiral groove 21 is rounded. The thread direction of the spiral groove 21 is the same as the rotation direction of the cylinder 11. The side of the spiral groove 21 away from the driving component is not in contact with the liner 13. The liners 13 are all spirally and equidistantly arranged inside the cylinder 11. The inner side of the liner 13 is evenly arranged with inwardly protruding drop steps 20. The drop steps 20 of two adjacent liners 13 are staggered. The cylinder 11 is placed horizontally. The upper lifting edge of the drop step 20 is designed to be inclined. When the cylinder 11 is working, it rotates horizontally. As the cylinder 11 continues to rotate, the angle between the upper lifting edge of the material dropping step 20 and the horizontal plane will gradually increase. During this process, the component of the gravity of the material to be processed along the inclined plane of the material dropping step 20 will also gradually increase. When this component exceeds the friction between the material and the surface of the material dropping step 20 and other forces that hinder the sliding of the material, the material to be processed will begin to slide and roll along the surface of the material dropping step 20.

[0064] Meanwhile, driven by the rotation of the cylinder 11, these grinding media form complex motion trajectories within the cylinder 11. When the material to be processed begins to roll, it will frequently come into contact with and collide with these moving grinding media. At the same time, construction waste will also participate in this collision process. Due to the presence of the material drop step 20, the collision process between the grinding media and construction waste is intensified. Therefore, each collision will have a certain impact and grinding effect on the construction waste, causing the particle size of the material to gradually decrease and the internal structure to be further refined and optimized. This multi-batch collision process greatly increases the frequency and intensity of the interaction between the material and the grinding media and construction waste, thereby effectively improving the grinding efficiency.

[0065] It should be noted that the inside of the cylinder 11 is provided with several grinding balls, and the volume of the flow hole 22 and the flow sleeve 23 is smaller than the volume of the grinding balls. An external feeding device is installed on the outside of the cylinder 11 and on the side close to the drive component, and an external receiving device is installed on the outside of the cylinder 11 and on the side far away from the external feeding device. The material dropping step 20 can be installed on the liner 13 by bolt locking.

[0066] It should be noted that the composition of construction solid waste is quite complex, including both large particulate matter, such as large blocks of concrete and bricks, and small particulate matter, such as fine sand and dust.

[0067] It should be noted that in this invention, the main grinding components are the grinding body and the material drop step 20. During the rotation of the cylinder 11, the grinding body is subjected to centrifugal force and continuously makes a throwing motion. When it is thrown from a height, it generates a huge impact force, which powerfully crushes and grinds the construction solid waste that enters the cylinder 11. The setting of the material drop step 20 further optimizes the grinding process. When the construction solid waste slides on the surface of the liner plate 13, it encounters the material drop step 20 and, under the action of gravity and the component force generated by the rotation of the cylinder 11, it makes a throwing motion along the material drop step 20. This throwing motion increases the movement trajectory and number of times the construction solid waste moves in the cylinder 11, so that the construction solid waste can be impacted and ground by the grinding body multiple times, achieving a multi-batch grinding effect and greatly improving the crushing efficiency.

[0068] In contrast, in traditional ball mills, the main wear parts are the cylinder 11 and the grinding media. During the operation of a traditional ball mill, the grinding media moves continuously inside the cylinder 11, frequently coming into contact with and colliding with the construction waste and the wall of the cylinder 11. Due to the hardness of the construction waste and the impact force of the grinding media, the wall of the cylinder 11 is easily worn. At the same time, the grinding media themselves will gradually wear and deplete during long-term collisions and friction.

[0069] For details, please refer to Figure 7 As shown, after the operator starts the drive unit, the drive unit begins to provide stable rotational power to the cylinder 11, so that the cylinder 11 rotates at a uniform speed in the set direction. At the same time, the external feeding equipment starts, continuously feeding construction solid waste into the cylinder 11.

[0070] When construction waste enters the cylinder 11, it is subjected to the combined effects of centrifugal force, friction, and gravity due to the rotation of the cylinder 11. Guided by the spiral arrangement of the liner 13, the construction waste slides slightly along the surface of the liner 13. This sliding makes the movement of the construction waste in the cylinder 11 more orderly, avoids the disorderly accumulation of materials, and improves the dispersion of materials. This allows the grinding media to come into more full contact with the construction waste and increases the grinding frequency.

[0071] Meanwhile, the setting of the material drop step 20 allows the construction solid waste to be thrown along the material drop step 20 during the sliding process. Since the angle between the parallel line of the material drop step 20 and the axis of the cylinder 11 is 45 degrees, the construction solid waste will be thrown along the material drop step 20 under the action of gravity and the component force generated by the rotation of the cylinder 11. This throwing motion increases the movement trajectory and number of movements of the construction solid waste in the cylinder 11, so that the construction solid waste can be impacted and ground by the grinding media multiple times, achieving a multi-batch grinding effect and greatly improving the crushing efficiency.

[0072] Moreover, due to the sliding of construction waste on the surface of liner plate 13 and the falling motion at the drop step 20, the relative movement between construction waste and liner plate 13 is more reasonable, reducing the direct impact and friction of construction waste on liner plate 13, thereby effectively reducing wear on liner plate 13, extending the service life of liner plate 13, and reducing equipment maintenance costs.

[0073] During the above process, some construction solid waste begins to break down as soon as it enters the cylinder 11 due to the fragility of its structure. At the same time, with the continuous falling action of the grinding media, large pieces of construction solid waste will gradually be broken down into smaller pieces of material.

[0074] Meanwhile, during the material crushing process, due to the centrifugal force, small pieces of material will enter the spiral groove 21 through the flow hole 22 and the flow sleeve 23 installed inside the flow hole 22. After entering the spiral groove 21, these small pieces of material are much smaller than other materials in the cylinder 11, so they will be further guided and crushed under the restriction of the spiral groove 21 wall.

[0075] It is worth mentioning that the spiral groove 21 has the same thread direction as the rotation direction of the cylinder 11. On the one hand, this allows small pieces of material to move more smoothly along the groove wall within the spiral groove 21, avoiding disorderly accumulation and jamming of materials within the groove, thus improving material processing efficiency. On the other hand, this unidirectional design helps enhance the stability of material movement within the spiral groove 21, allowing the material to be subjected to crushing force more evenly under the resistance of the groove wall, thereby improving the crushing effect. At the same time, during the crushing process, a large amount of heat is generated due to the friction between the grinding media and the construction waste, as well as the mutual collisions between materials. The structure of the spiral groove 21 increases the contact area between the material and the air, thereby increasing the heat dissipation area. Simultaneously, as the cylinder 11 rotates, air forms convection within the spiral groove 21, enhancing the heat convection effect and allowing heat to dissipate more quickly, effectively maintaining the temperature stability inside the ball mill and ensuring the normal operation of the equipment.

[0076] As the crushing process continues, since the side of the spiral groove 21 away from the drive component is not in contact with the liner 13, the small material in the spiral groove 21 that has been further crushed will mix with the large material in the cylinder 11. As the cylinder 11 continues to rotate, the mixed material will be transported to the outside of the cylinder 11 and finally collected by the external receiving equipment.

[0077] It should be noted that, firstly, the spirally arranged equidistant liner plates 13 can cooperate with the spiral grooves 21 to better guide the flow of materials, making the distribution of materials in the cylinder 11 more uniform and avoiding local material accumulation that would affect the crushing effect. Secondly, the spirally arranged liner plates 13 can evenly bear the impact force of the grinding media, reducing the damage and deformation of the liner plates 13 caused by uneven force, and extending the service life of the liner plates 13.

[0078] Secondly, when the grinding media impacts the building solid waste and the liner plate 13, the resulting vibration is propagated through the spiral groove 21. The spiral structure of the spiral groove 21 causes the vibration to be reflected and refracted during propagation, changing the direction of vibration propagation and energy distribution. This propagation, reflection and refraction of vibration allows the vibration energy to be more widely dispersed inside the cylinder 11, thus achieving the effect of vibration dissipation. At the same time, the presence of the vibration propagation component 2 also plays a damping role. It can absorb and consume a portion of the vibration energy, reducing the impact of vibration on the cylinder 11 and other components, thereby effectively reducing the noise generated by the ball mill during operation and achieving the function of sound insulation.

[0079] Example 2, based on Example 1, please refer to the following... Figure 8 and Figure 9 As shown, a support frame 14 is installed below the cylinder 11, and the liner 13 is installed inside the cylinder 11 by screws and bolts. A stress dispersion component 3 is provided on the top of the support frame 14. The stress dispersion component 3 includes a wrapping frame 31, which is an arc-shaped structure. The wrapping frame 31 is fixedly connected to the top of the support frame 14. Several first grooves 32 are arranged linearly and equidistantly on the surface of the wrapping frame 31. Several rotating disks 33 are rotatably connected inside each first groove 32.

[0080] Please refer to the example below. Figures 9 to 10 As shown, the rotating disk 33 is tangent to the two side walls of the bolt closest to the rotating disk 33. The bottom of the wrapping frame 31 gradually expands outward. Several second grooves 34 are opened on the surface of the wrapping frame 31 between every two first grooves 32. A contact disk 35 is rotatably connected to the center of the second groove 34. A telescopic rod 36 is symmetrically fixed inside each second groove 34. The output ends of the telescopic rods 36 are installed on both sides of the contact disk 35.

[0081] Specifically, when the cylinder 11 starts to rotate under the drive of the drive component, vibration will inevitably occur due to the falling motion of the internal grinding media and the crushing process of the material. This vibration will exert a continuous impact force on the bolts and nuts of the fixed liner 13. Under long-term vibration, the bolts and nuts are very likely to loosen.

[0082] However, during the rotation of the cylinder 11, when the nut of the fixed liner 13 becomes loose due to vibration, since the cylinder 11 continues to rotate, the first groove 32 corresponds to the position of the nut, and in the initial state, the rotating disk 33 is tangent to the edge of the nut. As the nut loosens, its edge will no longer be tangent to the rotating disk 33, and at this time the edge of the nut will come into contact with the rotating disk 33.

[0083] This resistance will generate a counterforce, which, through factors such as friction, will tighten the loose nut again. In this way, even during the long-term operation of the ball mill, the fixing bolts and nuts of the liner 13 can maintain a good tightness, ensuring that the liner 13 is stably installed inside the cylinder 11 and provides reliable support for the grinding work.

[0084] Meanwhile, since the wrapping frame 31 does not completely wrap the cylinder 11, and its surface has a first groove 32 and a second groove 34, this structure allows air to circulate between the cylinder 11 and the wrapping frame 31 when the ball mill is running.

[0085] Specifically, when the cylinder 11 rotates, the surrounding air will flow on the surface of the cylinder 11. The presence of the first groove 32 and the second groove 34 increases the air flow channel and area. When the air flows in the first groove 32 and the second groove 34, it can quickly carry away the heat generated on the surface of the cylinder 11 due to the grinding process, thereby achieving rapid cooling of the cylinder 11.

[0086] Furthermore, by contacting the bottom of the cylinder 11, the contact plate 35 can continuously transmit the vibration force generated by the cylinder 11 during operation to the inside of the packaging frame 31. The packaging frame 31 has an arc-shaped structure, and its bottom gradually expands outward. This structural design allows the packaging frame 31 to evenly distribute the force over a larger area when it bears the vibration force transmitted from the contact plate 35. When the vibration force is transmitted to the packaging frame 31, the arc-shaped structure guides the force to be distributed along the curve, avoiding excessive local stress. At the same time, the outward expansion of the bottom further increases the contact area between the packaging frame 31 and the support frame 14, so that the force can be transmitted to the support frame 14 more effectively, thereby improving the stability of the entire structure.

[0087] Since the stress dispersion component 3 can effectively reduce the vibration of the ball mill during operation, it has a positive impact on the energy consumption of the drive component. Under conditions of greater vibration, the drive component needs to overcome greater resistance to maintain the stable rotation of the cylinder 11, which will consume more energy. However, through the effective suppression of vibration by the stress dispersion component 3, the resistance that the drive component needs to overcome is reduced, thereby reducing the energy consumption of the drive component. This not only helps to save energy and reduce production costs, but also improves the overall operating efficiency of the ball mill, making it work more efficiently and stably in the process of construction waste treatment.

[0088] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0089] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A soundproof ball mill for construction waste, comprising a cylinder (11), wherein end caps (12) are installed on both sides of the cylinder (11), a plurality of liners (13) are installed inside the cylinder (11), and a driving component is installed outside the cylinder (11), characterized in that: The cylinder (11) is provided with a vibration propagation component (2), which includes a spiral groove (21) and several flow holes (22). The spiral groove (21) is opened inside the cylinder (11), and a number of the flow holes (22) are arranged in a spiral shape and are opened between the spiral groove (21) and the liner (13). Each of the aforementioned flow holes (22) is fitted with a flow sleeve (23); Several of the aforementioned flow sleeves (23) and flow holes (22) face away from the driving member, and their volumes gradually decrease; The liner plates (13) are all arranged in a spiral shape at equal intervals inside the cylinder (11). The inner side of the liner plates (13) is evenly arranged with material dropping steps (20) protruding inward. The material dropping steps (20) of two adjacent liner plates (13) are staggered. The upper lifting edge of the material dropping step (20) is designed to be inclined. When the cylinder (11) is working, the material to be processed is lifted upward along the rotating drop step (20). As the angle between the upper part of the drop step (20) and the horizontal plane increases, the material to be processed slides and rolls along the drop step (20) to the drop step (20) below the adjacent liner (13). A support frame (14) is installed below the cylinder (11). The liner (13) is installed inside the cylinder (11) by screws and bolts. A stress dispersion component (3) is provided on the top of the support frame (14). The stress dispersion component (3) includes a wrapping frame (31). The wrapping frame (31) has an arc-shaped structure. The wrapping frame (31) is fixedly connected to the top of the support frame (14). The surface of the wrapping frame (31) has a number of first grooves (32) arranged linearly and equidistantly. Each first groove (32) has a number of rotating disks (33) rotatably connected inside.

2. The soundproof ball mill for construction waste according to claim 1, characterized in that: The root of the spiral groove (21) is rounded.

3. The soundproof ball mill for construction waste according to claim 1, characterized in that: The thread direction of the spiral groove (21) is the same as the rotation direction of the cylinder (11).

4. The soundproof ball mill for construction waste according to claim 1, characterized in that: The spiral groove (21) on the side away from the drive member is not in contact with the liner (13).

5. The soundproof ball mill for construction waste according to claim 1, characterized in that: The rotating disks (33) are all tangent to the two side walls of the bolts closest to the rotating disks (33), and the bottom of the package frame (31) gradually expands outward.

6. The soundproof ball mill for construction waste according to claim 1, characterized in that: The surface of the package holder (31) is provided with a plurality of second grooves (34) between every two first grooves (32). A contact plate (35) is rotatably connected to the center of the second groove (34). A telescopic rod (36) is symmetrically fixedly connected inside each second groove (34). The output ends of the telescopic rods (36) are installed on both sides of the contact plate (35).

Images