Ball mill with long service life

Abstract

The utility model belongs to the technical field of ball mills, and particularly relates to a ball mill with long service life, which comprises two bearing seats arranged on a support, end covers are arranged on the two bearing seats, a cylinder body communicated with the inside of a hollow pipe is detachably arranged between the two end covers, and a cooling component is arranged right below the cylinder body. According to the ball mill long in service life, heat of the lining plate is absorbed and dissipated through the heat conduction plate, the heat dissipation plate and the heat dissipation fins, the temperature of the lining plate is reduced, the spray head can spray water to cool the bearing bush, the effect of cooling the lining plate is further achieved, meanwhile, the cylinder drives the bearing bush to rotate by 360 degrees, and the service life of the ball mill is prolonged. Each bearing bush can be effectively cooled, the temperature stability of the lining plate during working is guaranteed, the fatigue resistance of the lining plate is improved, the lining plate is prevented from cracking due to the fact that the temperature of the lining plate is too high, the operation stability of the ball mill is improved, and the service life of the ball mill is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of ball mill technology, and in particular to a ball mill with a long service life. Background Technology

[0002] Ball mills are key equipment for further pulverizing materials after they have been crushed. They are widely used in industries such as cement, silicate products, new building materials, refractory materials, fertilizers, ferrous and non-ferrous metal ore beneficiation, and glass and ceramics for dry or wet grinding of various ores and other grindable materials.

[0003] The liners of traditional ball mills, as components that directly contact the grinding balls and raw materials, bear enormous impact forces. Under prolonged, high-intensity operating conditions, the continuous impact between the grinding balls and the raw materials causes the surface temperature of the liners to rise sharply, creating a sustained high-temperature state. This high-temperature environment not only accelerates the thermal fatigue effect of the liner material but also promotes changes in the internal microstructure of the material, such as grain boundary weakening and phase transformation. This significantly reduces the mechanical properties and wear resistance of the liners. The combined effect of high temperature and continuous impact stress makes the liners highly susceptible to cracking. Once these cracks form, they expand rapidly, eventually leading to liner damage and severely affecting the operational stability and service life of the ball mill. Utility Model Content

[0004] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0005] Specifically, the technical problem to be solved by this utility model is to provide a ball mill with a long service life, so as to solve the current technical problem that the continuous impact between the grinding balls and the raw materials causes the surface temperature of the liner to rise sharply, forming a continuous high temperature state, which eventually leads to the liner damage and seriously affects the operational stability and service life of the ball mill.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A ball mill with a long service life includes two bearing seats mounted on a support, each bearing seat having an end cover, and a cylinder connected to the interior of a hollow tube being detachably installed between the two end covers. A cooling component is provided directly below the cylinder.

[0008] Multiple cooling cavities are formed on the peripheral surface of the cylinder. A bearing is installed on the inner wall of the cylinder at a position corresponding to each cooling cavity. The bearing includes a hollow chamber fixed to the inner wall of the cylinder. A hollow chamber is installed at the end of the hollow chamber away from the cylinder. A partition is welded inside the hollow chamber. The interior of the hollow chamber is divided into multiple heat dissipation cavities by the partition. A heat dissipation body for dissipating heat from the lining plate is installed inside the heat dissipation cavity.

[0009] As an improved technical solution, the heat dissipation body includes a heat-conducting plate fixed inside the heat dissipation cavity, and the inner wall surface of the heat-conducting plate is in contact with the outer wall surface of the liner. A heat dissipation plate is fixed to the end face of the heat-conducting plate away from the liner.

[0010] As an improved technical solution, the heat sink has multiple heat dissipation fins installed at equal intervals on the end face away from the heat conduction plate.

[0011] As an improved technical solution, the cooling component includes two tube supports, a spray pipe is rotatably mounted between the two tube supports, and a set of spray nozzles is mounted on the top of the outer wall of the spray pipe.

[0012] As an improved technical solution, a coaxial drive shaft is installed at the other end of the spray pipe, a gear is fixed on the drive shaft, an electric telescopic rod is provided at the end of the spray pipe near the drive shaft, and a spur rack that meshes with the gear is provided at the drive end of the electric telescopic rod.

[0013] As an improved technical solution, a translation bar is fixedly connected to the bottom of the rack, a slider is fixed to the bottom of the translation bar, and a guide rail is slidably connected to the translation bar through the slider.

[0014] As an improved technical solution, one end of the outer wall of the cylinder is fitted with an annular rack, and a drive motor for driving the cylinder to rotate is provided on one side of the cylinder. The drive end of the drive motor is fixedly connected to the input end of a reducer, and the input end of the reducer is fixedly connected to a transmission gear that meshes with the annular rack. A dustproof chamber for shielding the annular rack and the transmission gear is provided on the cylinder.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are:

[0016] 1. In this utility model, when the magic ball and raw materials hit the liner plate, causing the liner plate to heat up, the heat-conducting plate can directly absorb the temperature on the liner plate and transfer it to the heat dissipation plate for synchronous heat dissipation and cooling. At the same time, the heat dissipation fins will also dissipate heat from the heat dissipation plate, which helps to accelerate the heat dissipation of the liner plate by the heat-conducting plate and the heat dissipation plate, ensuring the heat dissipation effect of the liner plate. When the cylinder rotates, it will also drive the bearing to rotate synchronously. Therefore, the heat dissipation fins will also rotate with the cylinder. When the heat dissipation fins rotate, they will accelerate contact with the air and facilitate the air to be poured into the interior of the heat dissipation cavity, which is conducive to accelerating the heat dissipation of the heat dissipation fins and thus improving the heat dissipation of the liner plate.

[0017] 2. In this utility model, the water pump continuously supplies water into the interior of the spray pipe, and finally sprays it onto the bearing through the cooling chamber. The water accelerates the overall heat dissipation and cooling of the bearing. In addition, the electric telescopic rod reciprocates and extends, driving the rack to move back and forth. Under the meshing transmission of the rack and gear, the spray pipe is driven to rotate back and forth through the drive shaft, so that the nozzle is in a reciprocating swing state for spraying. The bearing can be sprayed repeatedly, improving the cooling effect on the bearing.

[0018] 3. In this invention, the heat of the liner is absorbed and dissipated by the heat-conducting plate, heat-dissipating plate, and heat-dissipating fins, thereby reducing the temperature of the liner. Furthermore, when the bearing is directly above the cooling component, the nozzle sprays water onto the bearing to cool it down, further enhancing the heat dissipation of the liner. Simultaneously, the cylinder rotates the bearing 360 degrees, allowing for effective heat dissipation and cooling of each bearing, ensuring the temperature stability of the liner during operation, improving the fatigue resistance of the liner, preventing the liner from cracking due to excessive temperature, and improving the operational stability and service life of the ball mill. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 This is a schematic diagram of the overall structure of a ball mill with a long service life according to this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of the cylinder of a ball mill with a long service life according to this utility model.

[0022] Figure 3 This is a schematic diagram of the structure of a ball mill bearing with a long service life according to the present invention.

[0023] Figure 4This is a schematic diagram of the structure of a cooling component for a ball mill with a long service life according to this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Bearing housing; 2. End cap; 3. Cylinder body; 31. Cooling chamber; 4. Ring rack; 5. Dustproof chamber; 6. Drive motor; 7. Reducer; 8. Bearing bush; 81. Hollow chamber; 82. Liner; 83. Partition; 84. Heat dissipation cavity; 85. Heat conduction plate; 86. Heat dissipation plate; 87. Heat dissipation fins; 9. Cooling assembly; 91. Pipe rack; 92. Spray pipe; 93. Spray head; 94. Electric telescopic rod; 95. Drive shaft; 96. Gear; 97. Straight rack; 98. Translation bar. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0029] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0030] like Figures 1 to 4As shown in the figure, this embodiment provides a ball mill with a long service life. This ball mill with a long service life includes two bearing seats 1 mounted on a support. Each of the two bearing seats 1 is equipped with an end cover 2, and a hollow tube is welded to the center of the opposite side of each of the two end covers 2. A cylinder 3 connected to the inside of the hollow tube is detachably installed between the two end covers 2. A cooling component 9 is provided directly below the cylinder 3.

[0031] Multiple cooling cavities 31 are provided on the peripheral surface of the cylinder 3. A bearing 8 is installed on the inner wall of the cylinder 3 at the position corresponding to each cooling cavity 31. The bearing 8 includes a hollow chamber 81 fixed to the inner wall of the cylinder 3. The hollow chamber 81 is installed at the end away from the cylinder 3. A partition 83 is welded inside the hollow chamber 81. The interior of the hollow chamber 81 is divided into multiple heat dissipation cavities 84 by the partition 83. A heat dissipation body for heat dissipation of the liner plate 82 is installed inside the heat dissipation cavity 84.

[0032] The heat of the liner 82 is absorbed and dissipated by the heat-conducting plate 85, the heat dissipation plate 86, and the heat dissipation fins 87, reducing the temperature of the liner 82. Furthermore, when the bearing 8 is located directly above the cooling component 9, the nozzle 93 sprays water onto the bearing 8 to cool it down, further dissipating heat from the liner 82. At the same time, the cylinder 3 drives the bearing 8 to rotate 360 ​​degrees, which can effectively dissipate heat and cool each bearing 8, ensuring the temperature stability of the liner 82 during operation, improving the fatigue resistance of the liner 82, preventing the liner 82 from cracking due to excessive temperature, and improving the stability and service life of the ball mill.

[0033] like Figures 1 to 3 As shown in the figure, in this embodiment, the heat dissipation body includes a heat-conducting plate 85 fixed inside the heat dissipation cavity 84, and the inner wall surface of the heat-conducting plate 85 is in contact with the outer wall surface of the liner 82. A heat dissipation plate 86 is fixed to the end face of the heat-conducting plate 85 away from the liner 82. When the magic ball and the raw material hit the liner 82 and cause the liner 82 to heat up, the heat-conducting plate 85 can directly absorb the temperature on the liner 82 and transfer it to the heat dissipation plate 86 for synchronous heat dissipation and cooling.

[0034] like Figures 2 to 3 As shown in the figure, in this embodiment, a plurality of heat dissipation fins 87 are installed at equal intervals on the end face of the heat dissipation plate 86 away from the heat conduction plate 85. The heat dissipation fins 87 also dissipate heat from the heat dissipation plate 86, which helps to accelerate the heat dissipation of the heat conduction plate 85 and the heat dissipation plate 86 on the liner plate 82 and ensure the heat dissipation effect on the liner plate 82.

[0035] like Figure 4 As shown, in this embodiment, the cooling component 9 includes two pipe supports 91, a spray pipe 92 is rotatably installed between the two pipe supports 91, a set of nozzles 93 is installed on the top of the outer wall of the spray pipe 92, and the water outlet of a water pump is fixedly connected to the water inlet at one end of the spray pipe 92.

[0036] like Figure 4 As shown, in this embodiment, a coaxial drive shaft 95 is installed at the other end of the spray pipe 92. A gear 96 is fixed on the drive shaft 95. An electric telescopic rod 94 is provided at one end of the spray pipe 92 near the drive shaft 95. A rack 97 that meshes with the gear 96 is provided at the drive end of the electric telescopic rod 94. The electric telescopic rod 94 reciprocates and extends, driving the rack 97 to move reciprocally. Under the meshing transmission action of the rack 97 and the gear 96, the spray pipe 92 is driven to rotate reciprocally through the drive shaft 95, so that the nozzle 93 is in a reciprocating swing state to spray. This allows for repeated spraying of the bearing 8, improving the cooling effect on the bearing 8.

[0037] like Figure 4 As shown, in this embodiment, a translation bar 98 is fixedly connected to the bottom of the rack 97, a slider is fixed to the bottom of the translation bar 98, and the translation bar 98 is slidably connected to a guide rail through the slider.

[0038] like Figure 1 As shown, in this embodiment, an annular rack 4 is fitted onto one end of the outer wall of the cylinder 3. A drive motor 6 for driving the cylinder 3 to rotate is provided on one side of the cylinder 3. The drive end of the drive motor 6 is fixedly connected to the input end of the reducer 7. The input end of the reducer 7 is fixedly connected to the transmission gear that meshes with the annular rack 4. A dustproof chamber 5 is provided on the cylinder 3 to shield the annular rack 4 and the transmission gear. The dustproof chamber 5 encloses the annular rack 4 and the transmission gear inside, which plays a protective role for the annular rack 4 and the transmission gear. This helps to reduce the direct corrosion of the annular rack 4 and the transmission gear by dust, and helps to improve the service life of the ball mill. When the cylinder 3 rotates, it will also drive the bearing 8 to rotate synchronously. Therefore, the heat dissipation fins 87 will also rotate with the cylinder 3. When the heat dissipation fins 87 rotate, they will accelerate their contact with the air and facilitate the airflow into the heat dissipation cavity 84, which is conducive to accelerating the heat dissipation of the heat dissipation fins 87 and thus improving the heat dissipation of the liner 82.

[0039] In use, the drive motor 6 drives the transmission gear to rotate through the reducer 7. Under the meshing transmission action of the transmission gear and the ring rack 4, the drive motor 6 can directly drive the cylinder 3 to rotate.

[0040] When the magic ball and raw materials hit the liner plate 82, causing the liner plate 82 to heat up, the heat conduction plate 85 can directly absorb the temperature on the liner plate 82 and transfer it to the heat sink plate 86 for simultaneous heat dissipation and cooling. At the same time, the heat dissipation fins 87 will also dissipate heat from the heat sink plate 86.

[0041] When the cylinder 3 rotates, it will also drive the bearing 8 to rotate synchronously. Therefore, the heat dissipation fins 87 will also rotate with the cylinder 3. When the heat dissipation fins 87 rotate, they will accelerate their contact with the air.

[0042] At the same time, the water pump continuously supplies water into the interior of the spray pipe 92, and finally sprays it onto the bearing 8 through the cooling chamber 31. The water accelerates the overall heat dissipation and cooling of the bearing 8. In addition, the electric telescopic rod 94 reciprocates and extends, driving the rack 97 to move back and forth. Under the meshing transmission of the rack 97 and the gear 96, the spray pipe 92 is driven to rotate back and forth through the drive shaft 95, so that the nozzle 93 is in a reciprocating swing state to spray, and the bearing 8 can be sprayed repeatedly.

[0043] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A ball mill with a long service life, characterized in that: It includes two bearing seats (1) mounted on a bracket, each bearing seat (1) is equipped with an end cap (2), and a cylinder (3) connected to the inside of the hollow tube is detachably installed between the two end caps (2). A cooling component (9) is provided directly below the cylinder (3). The cylindrical body (3) has multiple cooling chambers (31) on its peripheral surface. The inner wall of the cylindrical body (3) is equipped with a bearing (8) at the position opposite to each cooling chamber (31). The bearing (8) includes a hollow chamber (81) fixed to the inner wall of the cylindrical body (3). The hollow chamber (81) is installed at the end away from the cylindrical body (3). A partition (83) is welded inside the hollow chamber (81). The interior of the hollow chamber (81) is divided into multiple heat dissipation cavities (84) by the partition (83). A heat dissipation body for heat dissipation of the liner plate (82) is installed inside the heat dissipation cavity (84).

2. The ball mill with a long service life according to claim 1, characterized in that: The heat dissipation body includes a heat-conducting plate (85) fixed inside the heat dissipation cavity (84), and the inner wall surface of the heat-conducting plate (85) is in contact with the outer wall surface of the liner (82). A heat dissipation plate (86) is fixed on the end face of the heat-conducting plate (85) away from the liner (82).

3. A ball mill with a long service life according to claim 2, characterized in that: The heat sink (86) has multiple heat dissipation fins (87) installed at equal intervals on one end face away from the heat conduction plate (85).

4. A ball mill with a long service life according to claim 3, characterized in that: The cooling assembly (9) includes two pipe supports (91), a spray pipe (92) is rotatably mounted between the two pipe supports (91), and a set of nozzles (93) is mounted on the top of the outer wall of the spray pipe (92).

5. A ball mill with a long service life according to claim 4, characterized in that: The other end of the spray pipe (92) is equipped with a coaxial drive shaft (95), and a gear (96) is fixed on the drive shaft (95). An electric telescopic rod (94) is provided at one end of the spray pipe (92) near the drive shaft (95), and a straight rack (97) that meshes with the gear (96) is provided at the drive end of the electric telescopic rod (94).

6. A ball mill with a long service life according to claim 5, characterized in that: The bottom of the rack (97) is fixedly connected to a translation bar (98), the bottom of the translation bar (98) is fixed with a slider, and the translation bar (98) is slidably connected to a guide rail through the slider.

7. A ball mill with a long service life according to claim 6, characterized in that: One end of the outer wall of the cylinder (3) is fitted with an annular rack (4). A drive motor (6) for driving the cylinder (3) to rotate is provided on one side of the cylinder (3). The drive end of the drive motor (6) is fixedly connected to the input end of a reducer (7). The input end of the reducer (7) is fixedly connected to a transmission gear that meshes with the annular rack (4). A dustproof chamber (5) for shielding the annular rack (4) and the transmission gear is provided on the cylinder (3).

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