A crushing structure of a ball mill

Abstract

The application belongs to the technical field of ball mills, and particularly relates to a crushing structure of a ball mill, which comprises a support seat, a barrel rotatably arranged on the support seat, a crushing mechanism arranged in the barrel and used for grinding materials in the barrel when the barrel rotates, and the crushing mechanism comprises a shell in a cylindrical shape, an inner lining arranged in the shell and comprising a mounting surface in contact with the inside of the barrel and a flat surface in contact with balls, a plurality of groove lifting pieces arranged on the flat surface and used for accommodating the balls, and a lifting piece arranged in the shell and comprising a lifting rod and a fastening assembly used for fixing the lifting rod on the shell.

Description

Technical Field

[0001] This application belongs to the field of ball mill technology, and particularly relates to a crushing structure for a ball mill. Background Technology

[0002] In industrial fields such as ore processing and building material preparation, ball mills serve as equipment for crushing and grinding materials, and their crushing effect directly affects subsequent production efficiency and product quality. The crushing function of a ball mill mainly relies on the internal rotating grinding media (such as balls). The crushing process of materials is completed through the impact energy generated by the falling of the grinding media after being lifted, as well as the squeezing and grinding action between the grinding media.

[0003] To effectively lift the grinding media, existing ball mills typically have several circumferentially distributed lifting rods fixedly installed on the inner wall of the cylinder. During operation, the ball mill cylinder drives the lifting rods to rotate synchronously. Through contact with the grinding media, the lifting rods cause the grinding media inside the cylinder to rise together with the cylinder until the grinding media detach from the lifting rods due to gravity and fall, thus impacting the material below.

[0004] However, the existing ball mill's crushing structure has significant shortcomings. Between two adjacent lifting rods, the inner wall of the cylinder is mostly a smooth, flat surface, lacking any structure to assist in limiting or fixing the balls. As the lifting rods move the balls upwards, some balls, due to their own inertia or insufficient friction with the wall, may slip or shift off the flat surface just before reaching the preset lifting height, failing to be stably lifted to a higher position. Insufficient lifting height reduces the impact energy during descent, thus weakening the crushing effect on the material, prolonging grinding time, and reducing efficiency. This needs to be improved. Utility Model Content

[0005] The purpose of this application is to provide a crushing structure for a ball mill that can solve the above-mentioned problems.

[0006] The purpose of this application is to provide a crushing structure for a ball mill, including a support base and a cylinder rotatably mounted on the support base; it also includes a crushing mechanism disposed within the cylinder for abrading the material inside the cylinder during rotation. The crushing mechanism includes: The shell is cylindrical. The liner, located inside the shell, includes a mounting surface that contacts the interior of the cylinder and a flat surface that contacts the sphere. The flat surface has multiple grooves for accommodating the sphere. A lifting component, disposed within a housing, includes a lifting rod and a fastening assembly for securing the lifting rod to the housing; The lifting components are arranged in multiple ways and evenly distributed on the shell. When the shell rotates, some of the balls are pressed into and held in the groove until the shell rotates to a certain angle and the balls fall due to gravity.

[0007] The crushing mechanism of the ball mill described above has a cylindrical shell that fits snugly against the interior of the cylinder. The liner is installed inside the shell, and multiple grooves on the flat surface that contacts the balls can accommodate the balls when the shell rotates. This avoids the problem that the flat wall between adjacent lifting rods cannot fix the balls, and can stably press and hold some balls in the grooves. This not only increases the number of balls lifted, but also prevents the balls from slipping off prematurely due to inertia or insufficient friction, allowing the balls to rotate with the shell to a higher angle before falling due to gravity.

[0008] Meanwhile, the lifting components are evenly distributed on the shell, working together with the grooves to further improve the lifting stability of the balls, ensuring that more balls can be lifted to a higher position, enhancing the crushing effect on the materials inside the cylinder, improving the overall working efficiency of the ball mill, and also preventing the balls from moving erratically, ensuring that the materials inside the cylinder are evenly distributed, and improving the uniformity of crushing and grinding.

[0009] Furthermore, the groove has a circular cross-section, and each groove is provided with multiple convex reinforcing ribs for additional fixation after the ball is placed in the groove.

[0010] The groove has a circular cross-section, which better fits the curved surface of the sphere, increasing the contact area between the sphere and the inner wall of the groove, making the sphere more stable when placed in the groove. Multiple raised reinforcing ribs in each groove can provide additional limiting and fixing for the sphere after it is placed in the groove, further enhancing the stability of the sphere in the groove and preventing the sphere from loosening or slipping out when the shell rotates. This ensures that the sphere can stably rotate with the shell to the preset height. At the same time, the stable sphere containment state ensures that the trajectory of the sphere when falling is more regular, so that the impact energy is more concentrated on the material, further improving the stability of the crushing effect.

[0011] Furthermore: the lifting rod is strip-shaped, including a lifting surface and a positioning surface. The side of the lifting surface facing the direction of the ball's movement is provided with an inclined surface, and the angle between the inclined surface and the lifting surface is 45°.

[0012] The lifting rod is designed in a strip shape to fit the cylindrical structure of the shell, allowing for even distribution on the shell. The strip shape also provides sufficient lifting area to ensure effective contact with the sphere. An inclined surface on the lifting surface, facing the direction of the sphere's movement, guides the sphere upwards along its trajectory as the shell rotates. The 45° angle between the inclined surface and the lifting surface creates a suitable contact angle, ensuring sufficient friction between the sphere and the inclined surface without causing the sphere to jam due to an excessively large angle or insufficient friction due to an excessively small angle. Furthermore, the guiding effect of the inclined surface makes the sphere's movement more orderly, ensuring more spheres are lifted simultaneously, increasing the frequency of sphere impact on material per unit time, and enhancing crushing efficiency.

[0013] Furthermore, a contact surface is provided on the inclined surface, the contact surface is made of polyurethane, and a contact groove for installing the contact surface is provided on the lifting rod.

[0014] The polyurethane contact surface on the inclined surface enhances the friction between the ball and the contact surface, ensuring the ball can be stably lifted upwards along the inclined surface. The polyurethane material also possesses good elasticity, acting as a buffer when the ball contacts the contact surface, reducing hard impacts between the ball and the lifting rod. The contact groove on the lifting rod stably mounts the polyurethane contact surface onto the inclined surface, preventing it from detaching or shifting due to ball friction or equipment vibration during long-term use, thus ensuring the continuity and stability of the contact surface's function. Simultaneously, the polyurethane material has a certain degree of wear resistance, reducing wear on the contact surface and ensuring the lifting rod maintains a good lifting effect over the long term, thus maintaining the stability of the ball mill's crushing efficiency.

[0015] Furthermore, the fastening assembly includes: Through holes are provided on the housing; The fastening bolt has its unthreaded end located inside the lifting rod, and its threaded end extending through the through hole to the outside of the housing; An adjusting nut is located outside the housing and mates with a fastening bolt. The inner liner is located between the lifting rod and the housing, and it also has through holes for fastening bolts to pass through.

[0016] The through holes on the housing provide an installation channel for the fastening bolts. The unthreaded end of the fastening bolt is located inside the lifting rod, while the threaded end extends through the through hole to the outside of the housing. This connects the lifting rod to the housing, preventing the lifting rod from becoming loose when the housing rotates due to an insecure fixing method, and ensuring that the lifting rod rotates synchronously and stably with the housing.

[0017] The adjusting nut and fastening bolt are fitted on the outside of the housing. The tightness of the fastening bolt can be adjusted by turning the adjusting nut to ensure that the lifting rod is always stably fixed on the housing. The inner liner is located between the lifting rod and the housing and has a through hole for the fastening bolt to pass through. This allows the fastening bolt to clamp and fix the inner liner between the housing and the lifting rod at the same time as fixing the lifting rod. This ensures that the inner liner will not shift when the housing rotates, and that the position of the groove on the inner liner is stable, so as not to affect the sphere's accommodation and lifting.

[0018] Furthermore, a metal washer and a rubber washer are provided between the adjusting nut and the housing.

[0019] The metal washer placed between the adjusting nut and the housing increases the contact area between them, disperses the pressure of the adjusting nut on the housing surface, and prevents the adjusting nut from causing extrusion and wear on the housing surface during long-term tightening, thus protecting the housing and extending its service life. The rubber washer has good elasticity, which can fill the tiny gap between the adjusting nut and the metal washer, enhance the sealing performance of the fastening assembly, and also play a buffering role when the ball mill vibrates during operation, reducing the possibility of the adjusting nut loosening due to equipment vibration and ensuring the long-term stability of the fastening assembly.

[0020] The beneficial effects of this application are: 1. The inner liner is set inside the shell. Multiple grooves on the flat surface of the liner that contact the ball can accommodate the ball when the shell rotates. This avoids the problem that the flat wall between adjacent lifting rods cannot fix the ball. It can stably press some of the ball into and keep it in the groove, which not only increases the number of balls that can be lifted, but also prevents the ball from slipping off prematurely due to inertia or insufficient friction. This allows the ball to rotate with the shell to a higher angle before falling due to gravity. 2. The lifting components are evenly distributed on the shell and work together with the grooves to further improve the lifting stability of the balls, ensuring that more balls can be lifted to a higher position, enhancing the crushing effect on the materials inside the cylinder, and improving the overall working efficiency of the ball mill. 3. The adjusting nut and fastening bolt are installed on the outside of the housing. The tightness of the fastening bolt can be adjusted by turning the adjusting nut to ensure that the lifting rod is always stably fixed on the housing. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a sectional view of the present invention; Figure 3 yes Figure 2 Enlarged view of A in the middle; Figure 4 This is a schematic diagram of the groove structure of this utility model.

[0022] The reference numerals in the figure are as follows: 100, support base; 200, cylinder; 300, shell; 400, liner; 410, mounting surface; 420, flat surface; 421, groove; 422, reinforcing rib; 500, lifting component; 510, lifting rod; 511, lifting surface; 512, positioning surface; 513, inclined surface; 514, contact surface; 515, contact groove; 520, fastening assembly; 521, through hole; 522, fastening bolt; 523, adjusting nut; 524, metal washer; 525, rubber washer. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0024] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0025] The crushing structure of the ball mill provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0026] Example 1: like Figures 1 to 4 As shown, this application embodiment provides a crushing structure for a ball mill, including a support base 100 and a cylinder 200 rotatably mounted on the support base 100; it also includes a crushing mechanism disposed inside the cylinder 200, used to abrade the material inside the cylinder 200 as the cylinder 200 rotates. The crushing mechanism includes: The shell is 300mm in diameter and cylindrical in shape. The inner liner 400 is disposed inside the housing 300 and includes a mounting surface 410 that contacts the interior of the cylinder 200 and a flat surface 420 that contacts the sphere. The flat surface 420 is provided with a plurality of grooves 421 for accommodating the sphere. The lifting component 500 is disposed within the housing 300 and includes a lifting rod 510 and a fastening assembly 520 for fixing the lifting rod 510 to the housing 300. The lifting components 500 are provided in multiple and evenly distributed on the housing 300. When the housing 300 rotates, some of the balls are pressed into and held in the groove 421 until the housing 300 rotates to a certain angle and the balls fall due to gravity.

[0027] In some embodiments of this application, such as Figure 1As shown, the crushing mechanism of the ball mill described above has a cylindrical shell 300 that fits snugly inside the cylinder 200. The liner 400 is located inside the shell 300. Multiple grooves 421 on the flat surface 420 that contacts the ball can accommodate the ball when the shell 300 rotates. This avoids the problem that the flat wall between adjacent lifting rods 510 cannot fix the ball. It can stably press some of the ball into and keep it in the grooves 421, which not only increases the number of balls that can be lifted, but also prevents the ball from slipping off prematurely due to inertia or insufficient friction. This allows the ball to rotate with the shell 300 to a higher angle before falling due to gravity.

[0028] Meanwhile, the lifting components 500 are evenly distributed on the shell 300, working together with the grooves 421 to further improve the lifting stability of the balls, ensuring that more balls can be lifted to higher positions, enhancing the crushing effect on the materials inside the cylinder 200, improving the overall working efficiency of the ball mill, and also preventing the balls from moving erratically, ensuring that the materials inside the cylinder 200 are evenly distributed, and improving the uniformity of crushing and grinding.

[0029] Furthermore, the groove 421 has a circular cross-section, and each groove 421 is provided with multiple convex reinforcing ribs 422 for additional fixation after the ball is placed into the groove 421.

[0030] The groove 421 has a circular cross-section, which can better fit the curved surface of the ball and increase the contact area 514 between the ball and the inner wall of the groove 421, making the ball more stable in the groove 421. The multiple raised reinforcing ribs 422 in each groove 421 can form additional limiting and fixing of the ball after it is placed in the groove 421, further enhancing the stability of the ball in the groove 421, preventing the ball from loosening or slipping out in the groove 421 when the shell 300 rotates, and ensuring that the ball can stably rotate with the shell 300 to the preset height. At the same time, the stable ball containment state can ensure that the trajectory of the ball when it falls is more regular, so that the impact energy is more concentrated on the material, further improving the stability of the crushing effect.

[0031] Example 2: This application provides a crushing structure for a ball mill. In addition to the above-mentioned technical features, the crushing structure of the ball mill in this application also includes the following technical features.

[0032] like Figure 2 and Figure 3 As shown, the lifting rod 510 is strip-shaped and includes a lifting surface 511 and a positioning surface 512. An inclined surface 513 is provided on the side of the lifting surface 511 facing the direction of the ball's movement, and the angle between the inclined surface 513 and the lifting surface 511 is 45°.

[0033] In this embodiment, the lifting rod 510 is strip-shaped, which can be adapted to the cylindrical structure of the housing 300, making it easy to distribute evenly on the housing 300. At the same time, the strip structure can provide sufficient lifting surface area 511 to ensure effective contact with the ball. The inclined surface 513 on the lifting surface 511 facing the direction of the ball's movement can guide the ball to slide upward along the ball's movement trajectory when the housing 300 rotates. The 45° angle between the inclined surface 513 and the lifting surface 511 can make the ball and the inclined surface 513 form a suitable contact angle, which can ensure the friction between the ball and the inclined surface 513, and prevent the ball from getting stuck due to an excessively large angle, or the friction from being insufficient due to an excessively small angle. In addition, the guiding effect of the inclined surface 513 can also make the ball's movement more orderly, ensuring that more balls can be lifted synchronously, increasing the frequency of the ball falling and impacting the material per unit time, and enhancing the crushing efficiency.

[0034] Furthermore, a contact surface 514 is provided on the inclined surface 513. The contact surface 514 is made of polyurethane, and a contact groove 515 for installing the contact surface 514 is provided on the lifting rod 510.

[0035] The polyurethane contact surface 514 on the inclined surface 513 enhances the friction between the ball and the contact surface, ensuring the ball can be stably lifted upwards along the inclined surface 513. The polyurethane material also has good elasticity, acting as a buffer when the ball contacts the contact surface 514, reducing hard impacts between the ball and the lifting rod 510. The contact groove 515 on the lifting rod 510 stably mounts the polyurethane contact surface 514 onto the inclined surface 513, preventing it from detaching or shifting due to ball friction or equipment vibration during long-term use, thus ensuring the continuity and stability of the contact surface 514's function. Simultaneously, the polyurethane material has a certain degree of wear resistance, reducing wear on the contact surface 514 and ensuring the lifting rod 510 maintains a good lifting effect over the long term, thus maintaining the stability of the ball mill's crushing efficiency.

[0036] Example 3: This application provides a crushing structure for a ball mill. In addition to the above-mentioned technical features, the crushing structure of the ball mill in this application also includes the following technical features.

[0037] like Figure 2 and Figure 3 As shown, the fastening assembly 520 includes: Through hole 521 is provided on housing 300; Fastening bolt 522, the unthreaded end of which is located inside lifting rod 510, and the threaded end of which extends through through hole 521 to the outside of housing 300; Adjusting nut 523 is located outside housing 300 and mates with fastening bolt 522; The inner liner 400 is located between the lifting rod 510 and the housing 300, and the inner liner 400 is also provided with a through hole 521 for the fastening bolt 522 to pass through.

[0038] The through hole 521 on the housing 300 provides an installation channel for the fastening bolt 522. The unthreaded end of the fastening bolt 522 is located inside the lifting rod 510, and the threaded end extends through the through hole 521 to the outside of the housing 300. This allows the lifting rod 510 to be connected to the housing 300, avoiding the problem of the lifting rod 510 becoming loose when the housing 300 rotates due to an unstable fixing method. This ensures that the lifting rod 510 rotates synchronously and stably with the housing 300.

[0039] In this embodiment, the adjusting nut 523 and the fastening bolt 522 are fitted together on the outside of the housing 300. The tightness of the fastening bolt 522 can be adjusted by turning the adjusting nut 523 to ensure that the lifting rod 510 is always stably fixed on the housing 300. The inner liner 400 is located between the lifting rod 510 and the housing 300 and is provided with a through hole 521 for the fastening bolt 522 to pass through. This allows the fastening bolt 522 to clamp and fix the inner liner 400 between the housing 300 and the lifting rod 510 while fixing the lifting rod 510. This ensures that the inner liner 400 will not shift with the rotation of the housing 300 and ensures that the position of the groove 421 on the inner liner 400 is stable, without affecting the accommodation and lifting of the ball.

[0040] Furthermore, a metal washer 524 and a rubber washer 525 are provided between the adjusting nut 523 and the housing 300.

[0041] The metal washer 524 provided between the adjusting nut 523 and the housing 300 increases the contact area 514 between the adjusting nut 523 and the housing 300, disperses the pressure of the adjusting nut 523 on the surface of the housing 300, avoids the adjusting nut 523 causing extrusion wear on the surface of the housing 300 during long-term tightening, protects the housing 300 and extends its service life; the rubber washer 525 has good elasticity, can fill the small gap between the adjusting nut 523 and the metal washer 524, enhance the sealing performance of the fastening assembly 520, and can also play a buffering role when the ball mill vibrates during operation, reduce the loosening of the adjusting nut 523 due to equipment vibration, and ensure the long-term stability of the fastening effect of the fastening assembly 520.

[0042] It should be noted that, in this document, 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 that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0043] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A crushing structure for a ball mill, comprising a support base (100) and a cylinder (200) rotatably disposed on the support base (100); characterized in that: It also includes a crushing mechanism, which is disposed inside the cylinder (200) and is used to abrade the material inside the cylinder (200) by rotating the cylinder (200). The crushing mechanism includes: The shell (300) is cylindrical; The liner (400) is disposed inside the housing (300) and includes a mounting surface (410) that contacts the interior of the cylinder (200) and a flat surface (420) that contacts the sphere. The flat surface (420) is provided with a plurality of grooves (421) for accommodating the sphere. A lifting member (500) is disposed within a housing (300) and includes a lifting rod (510) and a fastening assembly (520) for fixing the lifting rod (510) to the housing (300); Among them, multiple lifting components (500) are provided and evenly distributed on the shell (300). When the shell (300) rotates, some of the balls are pressed into and held in the groove (421) until the shell (300) rotates to a certain angle and the balls fall due to gravity.

2. The crushing structure of a ball mill according to claim 1, characterized in that: The groove (421) has a circular cross-section, and each groove (421) is provided with multiple convex reinforcing ribs (422) for additional fixation of the ball after it is placed into the groove (421).

3. The crushing structure of a ball mill according to claim 2, characterized in that: The lifting rod (510) is strip-shaped and includes a lifting surface (511) and a positioning surface (512). An inclined surface (513) is provided on the side of the lifting surface (511) facing the direction of the ball's movement. The angle between the inclined surface (513) and the lifting surface (511) is 45°.

4. The crushing structure of a ball mill according to claim 3, characterized in that: The inclined surface (513) is provided with a contact surface (514), which is made of polyurethane, and the lifting rod (510) is provided with a contact groove (515) for installing the contact surface (514).

5. The crushing structure of a ball mill according to claim 4, characterized in that: The fastening assembly (520) includes: A through hole (521) is provided on the housing (300); The fastening bolt (522) has an unthreaded end located inside the lifting rod (510) and a threaded end extending through the through hole (521) to the outside of the housing (300); An adjusting nut (523) is provided outside the housing (300) and engages with a fastening bolt (522); The inner liner (400) is located between the lifting rod (510) and the housing (300), and the inner liner (400) is also provided with a through hole (521) for the fastening bolt (522) to pass through.

6. The crushing structure of a ball mill according to claim 5, characterized in that: A metal washer (524) and a rubber washer (525) are provided between the adjusting nut (523) and the housing (300).

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